JPH0676851B2 - Ice heat storage device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ice heat storage device for converting night heat into cooling heat and storing the cooling heat.

[Conventional technology]

It has been previously proposed that ice is frozen into ice as a means for accumulating electric power at night and used as cooling energy by utilizing heat of fusion during the daytime. In this case, there is a possibility that the tank expands when it freezes and the tank is damaged. In order to prevent this, for example, a cooling pipe is spirally arranged in the tank, cooling liquid is supplied from the outer circumference, water in the tank is cooled from the outer circumference, and frozen from the inner circumference of the tank to form an ice film. A means for preventing damage to the tank has also been proposed (for example, Japanese Utility Model Publication No. 63-175775).

[Problems to be Solved by the Invention]

In this case, there is no problem when the diameter of the tank is relatively small, but there is a problem that when the diameter of the tank is relatively large, the cooling effect in the vicinity of the center is poor.

In view of the above point, the present invention has an object to effectively perform freezing not only in the inner peripheral edge of the tank but also in the vicinity of the central portion of the tank to increase the amount of ice heat storage.

Further, the present invention, when forming the cooling pipe in a spiral shape,
The purpose is to accurately maintain the distance between the cooling pipes.

[Means for Solving the Problems]

In the ice heat storage device of the present invention for achieving the above object, a large number of cooling pipes are arranged in parallel, the tips of the pipes are alternately attached to a supply header and a discharge header, and the supply header and the discharge header are spirally formed. Of the wound and wound cooling pipe group, the other end of the cooling pipe group with the tip attached to the supply header is the other end of the cooling pipe group located outside the spiral, and the cooling pipe group with the tip attached to the discharge header. The ends are attached to the supply header located outside the spiral, they are housed in the tank, and the parallel cooling pipes are attached with spacers having a required height with a predetermined pitch, and the spacers are provided between the upper and lower cooling pipes. Also, the gist is to keep the inner and outer tubes at a predetermined interval.

[Work]

Of the pair of cooling tubes forming a spiral, one cooling tube group is supplied with the cooling liquid from the outside to the inside, and the other cooling tube group is supplied with the cooling liquid from the inside to the outside. To be done. As a result, the water in the tank starts to freeze around the tank and from the center. At this time, when a large number of cooling pipes are arranged in parallel and spirally wound, a spacer is attached to the cooling pipes with a predetermined pitch so that the intervals between the cooling pipes and the spiral pitch are kept constant.

〔Example〕

FIG. 1 is a diagram for explaining the principle of the ice heat storage device of the present invention. The ice heat storage device 1 has a pair of cooling pipes 3a and 3b spirally wound and housed in a tank 2. Both ends of each cooling pipe 3a, 3b are connected to a cooling liquid supply header 4a, 4b and a discharge header 5a, 5b.
However, the supply header 4a for one cooling pipe 3a is provided outside the spiral, the discharge header 5a is provided inside, the supply header 4b for the other cooling pipe 3b is provided inside the spiral, and the discharge header 5b is provided outside the both. The supply headers 4a and 4b are connected to the connecting pipe 6a, and the discharge headers 5a and 5b are connected to the connecting pipe 6b. A cooling liquid supply pipe 7 connects a chiller (not shown) and the supply header 4a.

As a result, the cooling liquid flows from the outside to the inside of the spiral for the one cooling pipe 3a and from the inside to the outside of the other cooling pipe 3b.

Therefore, the water in the tank 2 starts freezing from both inside and outside, and the freezing speed becomes higher than the water in the whole tank as compared with the conventional freezing method from the outside, and the ice heat storage capacity becomes large.

Although the water stored during freezing causes a slight expansion, the tank 2 is protected by the ice layer formed on the inner periphery and is not damaged. Therefore, the water is stored near the middle portion between the central portion and the outer peripheral portion. Bulge up and down.

Next, FIG. 2 and subsequent figures show an embodiment of the present invention. Ice heat storage device 10
In the layer 11, a large number of cooling pipe groups 12a, 12b forming a pair in the same manner as the above-mentioned principle explanatory view (hereinafter collectively referred to as cooling pipe 12)
Is spirally wound and stored. However, both cooling pipe groups 12a, 12
b are alternately provided in the vertical direction with a predetermined pitch. The cooling liquid supply header 13a is provided outside the one cooling pipe group 12a.
Further, the inner side is connected to the discharge header 14a, the inner side is connected to the cooling liquid supply header 13b, and the outer side is connected to the discharge header 14b for the other cooling pipe group 12b. 15a is both supply headers 13a,
A connecting pipe for connecting 13b and a connecting pipe 15b for connecting both discharge headers 15a and 15b. Reference numeral 16 is a spacer inserted between the inner and outer cooling pipes 12, 12. The spacer 16 is composed of a synthetic resin plate or the like, and as shown in FIG. 4 and FIG.
Fitting holes 17 for elastically press-fitting 12 are punched at a predetermined pitch, and the height h thereof is set to a predetermined length for determining the pitch of the spiral. The top fitting hole and the upper end 16a
The length l (FIGS. 3 and 4) of and is made to closely face the lid 18 when inserted into the tank 11 as shown in FIG. As a result, it is possible to prevent the cooling pipe 12 from being lifted up due to expansion during freezing.

Next, FIG. 6 shows a method of manufacturing the ice heat storage device of the present invention, particularly a spiral formation procedure of the cooling pipe 12. That is, for example, seven four-row, four-tier shelves accommodating a large number of rolls, each having a cooling pipe made of a synthetic resin pipe such as polyethylene wound around a reel (not shown), are arranged in parallel, and the cooling pipes 12
And the tips of the cooling tubes 12a and 12b are alternately arranged,
One cooling pipe group 12a is attached to the discharge header 14a, and the other cooling pipe group 12a.
12b connects to the supply header 13b. Reference numeral 19 denotes a connection pipe, one of which is fixed to the supply header 13b and the discharge header 14a by screwing or the like, and the other is press-fitted and fixed to each cooling pipe 12.

Then, at intervals of a predetermined interval, spacers 16 made of synthetic resin such as polypropylene are pushed into the parallel cooling pipes from above and fixed. As a result, the distance between the cooling tubes is maintained constant. Then, the supply header 13b and the discharge header 14a are spirally wound. At this time, the spacer
By installing 16, the spiral pitch is taken up with a constant pitch. Then, after being wound to a predetermined diameter, the supply header 13a is fixed to the one cooling pipe group 12a and the discharge header 14b is fixed to the other cooling pipe group 12b in the essential regions.

Thereafter, the supply headers 13a and 13b inside and outside and the discharge headers 14a and 14b are connected to each other by connecting pipes 15a and 15b, respectively, and are housed in the tank 11 (Fig. 2).

〔The invention's effect〕

According to the present invention, each pair of cooling pipes is spirally wound so that one cooling pipe group extends from the outside toward the inside, and the other cooling pipe group extends inside. Since it was designed to supply the cooling liquid from each to the outside,
Freezing starts from both inside and outside. Therefore, freezing is efficiently performed, and the amount of stored heat can be increased.

Further, according to the present invention, spacers having a required height are attached to the parallel cooling pipes at a predetermined pitch, and the spacers hold the upper and lower cooling pipes and the inner and outer pipes at predetermined intervals. The pitch is always determined by the height of the spacer when the coil is wound in a spiral shape while keeping a certain interval at all times and cooling the whole uniformly without causing unevenness in cooling. Can be wound in a spiral.

[Brief description of drawings]

1 is an explanatory view of the operating principle of the ice heat storage device of the present invention, FIG. 2 is a plan view of the ice heat storage device, and FIG. 3 is XX in FIG.
FIG. 4 is an enlarged explanatory view along the line, FIG. 4 is a perspective view of a spacer, and FIG.
The figure is a partial front view of the spacer, and FIG. 6 is an explanatory view of the winding procedure of the cooling tube group. 1, 10 is an ice heat storage device, 2, 11 are tanks, 3a, 3b are cooling pipes, 4a, 4b, 1
3a, 13b are supply headers, 5a, 5b, 14a, 14b are discharge headers, 12
Reference numerals a and 12b are cooling pipe groups, and 16 is a spacer.

Claims (1)

[Claims] 1. A plurality of cooling pipes are arranged in parallel, the tips of the pipes are alternately attached to a supply header and a discharge header, and the supply header and the discharge header are spirally wound, and among the wound cooling pipe groups. Supply with the other end of the cooling pipe group with the tip attached to the supply header to the discharge header located outside the spiral, and with the other end of the cooling pipe group with the tip attached to the discharge header located outside the spiral. Attached to the header and housed in the tank, spacers having a required height with a predetermined pitch are attached to the parallel cooling pipes, and the spacers maintain the upper and lower cooling pipes and the inner and outer pipes at predetermined intervals. An ice heat storage device characterized in that.