JPH10281602A - Ice heat storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize stable ice making by suppressing choking of inside of a freezer with frozen water, and icing on the tip of jet nozzle by suppressing the entrainment of water to the antifreeze solution at the antifreeze solution storage part of an ice making tank. SOLUTION: An ice heat accumulator is provided with an ice making tank 1 storing water insoluble antifreeze solution 4 of witch specific gravity is heavier than that of water and water 2, and an antifreeze solution circulating system producing fine ice particles by heat exchanging the collected antifreeze solution with an antifreeze solution pump from the inside of the ice making tank 1 being flowed from antifreeze solution jetting nozzles 12 opened at the upper part of the boundary between the water 2 and the antifreeze solution 4 with water, after cooling it to the temperature lower that 0 deg.C with a freezer, and an antifreeze solution storing part 5 is formed with a downward recess formed on the bottom surface of the ice making tank 1 forming inclined parts 6 with an adequate angle at the parts connecting between either of the both side opening part edges of the storing part 5 and the bottom surface of the ice making tank 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice heat storage device for producing sherbet-like fine ice particles for use in a cooling load of an air conditioner or the like.

[0002]

2. Description of the Related Art In recent years, the consumption of electric energy in the industrial field and the consumer field has been increasing, and in particular, the maximum power consumption throughout the year has occurred during the daytime in summer. The main reason for this is the spread of air conditioning. For this reason, there is a social problem that the difference in power consumption between day and night is widened and the load factor of the power equipment is reduced.

[0003] By the way, for the purpose of leveling the power load in summer, ice heat storage devices that produce ice using nighttime electric power and thaw during the day to extract cold heat have begun to spread. This ice thermal storage system reduces power demand during peak hours of air conditioning load in the daytime and uses electricity during the off-peak hours when prices are low during nighttime peaks. It can also respond to both interests and social demands such as suppression of carbon dioxide emission.

[0004] In an air conditioning system for an industrial plant or a high-rise building, an ice heat storage device has been put into practical use. In particular, a method called a dynamic method has recently been used, ie, sherbet-like ice or fine ice particles have been formed in a water tank. A system in which the water is floated and heated after absorbing the cooling load to reflux and mixed to melt the ice has been developed.

[0005] In this ice heat storage device, sherbet-like ice is produced from water by a refrigerator using nighttime electric power, which tends to be excessive, and is melted in the daytime to use the cold heat for air conditioning and industrial use. Things.

As such an ice heat storage device, for example, JP-A-5-5541, JP-A-5-240476, JP-A-5-280769, and JP-A-4-236.
Nos. 032 and 3-140767. One example will be described with reference to FIG.

The ice heat storage apparatus of this type is an antifreeze 4 such as an oil-based liquid or a fluorine-based inert liquid which is water-insoluble and has a specific gravity greater than that of water, which is cooled to 0 ° C. or lower by a refrigerator 13, ie, 0 ° C. A liquid having a lower freezing point is used as a cooling medium, and the cooling medium is jetted from the top of an ice making cylinder 3 provided by a communicating part 8 with a lower part of an ice making tank 1 in which water 2 and sherbet-like ice are stored. The water 2 is stored in the form of fine ice 7 by exchanging heat by direct contact with the water 2, and the antifreeze 4 is recovered from the antifreeze storage 5 at the bottom of the ice making tank 1. Antifreeze pump 1
After being cooled by the refrigerator 13 while being pressurized by 5,
The ice making is performed by forming an antifreeze circulating system in which the water is jetted out again from the top of the ice making cylinder 3 into the water.

In this case, water collected by a water pump 18 from a water intake section 10 at an upper portion of the ice making tank 1 is caused to flow from the top of the ice making cylinder 3. In FIG. 1, the * parts are connected to the tops of the ice making cylinders 3 (not shown).

When a plurality of systems in which one ice making cylinder 3 is connected to one ice making tank 1 are united in parallel, the ice making capacity becomes twice as many as the united number, but in this case, the antifreeze piping becomes complicated and There is a problem that the amount of antifreeze increases.

Therefore, as shown in FIG. 10, a system is constructed in which a plurality of ice making cylinders 3 are connected in parallel to one large ice making tank 1. In FIG. 10, not only the thawing system, but also the twelve ice-making cylinders 3, the circulation system of the antifreeze 4, and the circulation system of the water 2 are omitted, and the outline of the ice-making tank 1 is shown.

In FIG. 1, * parts of the antifreeze circulating system and the water circulating system are respectively connected to the tops of a plurality of ice making cylinders 3 not shown. And FIG.
As shown in (a) and (b), an antifreeze storage 5 for recovering the antifreeze 4 is provided at the bottom of the ice making tank 1.

On the other hand, the top of the ice making cylinder 3 has a structure as shown in FIG. The antifreeze jet nozzle 12 has a double pipe structure of an inner pipe 21 and an outer pipe 22, and the inner pipe 21 of the antifreeze jet nozzle 12 is connected to the antifreeze storage part 5 via antifreeze pipes 14 a and 14 c. This antifreeze pipe 14
In a, an antifreeze pump 15 and a refrigerator 13 are provided in order in the flow direction of the antifreeze 4. Further, a branch pipe 14 b branched between the antifreeze pump 15 of the antifreeze pipe 14 a and the refrigerator 13 is connected to the outer pipe 22 of the antifreeze jet nozzle 12.

The antifreeze 4 cooled to a temperature of 0 ° C. or less by the refrigerator 13 is supplied to the antifreeze jet nozzle 12 through the antifreeze pipe 14c.
Is sprayed into the water 2 in the ice making cylinder 3 from the inner pipe 21.
On the other hand, the rest of the antifreeze 4 guided to the antifreeze pipe 14a passes through the branch pipe 14b, and the antifreeze jet nozzle 1 having a double pipe structure.
2 to the outer tube 22. The antifreeze 4 does not pass through the refrigerator 13 from the antifreeze reservoir 5 and is supplied to the antifreeze jet nozzle 12.
The antifreeze 4 at a temperature of 0 ° C. or higher is sent to the outer tube 2 of the ejection nozzle 12.
The water 2 is discharged into the water 2 in the ice making cylinder 3 and dispersed.

At this time, a film of antifreeze 4 at 0 ° C. or higher
It melts the static ice that is going to adhere to the opening end 12a of the inner tube 21, prevents freezing of the antifreeze jet nozzle 12, and enables the antifreeze jet nozzle 12 to continuously deposit ice particles 7.

[0015]

In the ice heat storage device having such a configuration, the antifreeze 4 flowing out of the ice making cylinder 3 to the ice making tank 1 through the connecting portion 8 becomes a waterfall, and the antifreeze storage 5
On the antifreeze interface 9 At this time, a water bubble 19, which is a balloon-like water film sphere in which a thin film of the water 2 wraps the antifreeze 4, is generated. As shown in FIG. 12, the water bubbles 19 are formed in a layer at the antifreeze interface 9 in a state where the disappearance amount and the generation amount are balanced. The water bubbles 19 floating in the antifreeze 4 separately from the layer flow toward the antifreeze reservoir 5 due to the flow of the antifreeze 4, but are taken into the foam 19 layer at the interface 9. Depending on the conditions, the layer may be thin or have a small area.
In the vicinity, the foam 19 flows toward the antifreeze reservoir 5,
A bubble 19 layer is formed just above the antifreeze storage part 5. At the same time, a large amount of minute water droplets 20 are generated and float in the antifreeze 4. The larger the flow rate of the antifreeze 4 from the ice making cylinder 3 per one bottle, and the larger the height of the waterfall-shaped flow path to the interface 9,
The water bubbles 19 and the minute water droplets 20 become large.

Incidentally, the minute water droplets 20 are stored in the antifreeze liquid reservoir 5.
Is sucked together with the antifreeze 4 from the suction port 23 of the antifreeze storage 5 when it is caught in the flow of the antifreeze 4. Further, the water bubbles 19 may be caught in the flow of the antifreeze 4 into the antifreeze storage part 5 and may be sucked out together with the antifreeze 4 from the suction port 23. At this time, the cross section of the ice making tank 1 viewed from the side is shown in FIG.
As described above, the water bubbles 19 are collected directly above the antifreeze storage section 5, and the layer becomes thick. The water bubbles 19 in which the antifreeze 4 is floating may flow into the antifreeze reservoir 5 without being taken into the foam layer, or after the water bubbles 19 are separated from the foam layer by the flow of the antifreeze 4, the antifreeze reservoir 5 may be used. It may flow into

In this case, as the inflow speed of the antifreeze 4 into the antifreeze reservoir 5 increases, and as the suction pipe 23 is closer to the antifreeze interface 9, the entrapment of water bubbles 19 and minute water droplets 20 tends to occur. That is, it is more likely to occur when the amount of the antifreeze 4 in the ice making tank 1 is small and the height up to the antifreeze interface 9 is low, or when the flow rate of the antifreeze 4 is high.

The water bubbles 19 and the fine water droplets 20 sucked out together with the antifreeze 4 sucked out of the antifreeze liquid storage unit 5 correspond to the large amount of the water bubbles 19 and the minute water droplets 20 getting into the antifreeze liquid storage unit 5.
Will increase. If the water 2 is mixed into the sucked antifreeze 4, the water 2 mixed in the antifreeze 4 is frozen when the antifreeze 4 is cooled to 0 ° C. or lower in the refrigerator 13. Therefore, the heat exchanger of the refrigerator 13 is clogged with ice, the flow rate of the antifreeze 4 decreases, and the antifreeze 4 cannot be sufficiently cooled, and the ice making capacity decreases. When the ice is completely clogged, the refrigerator 13 does not operate normally, and the ice storage device cannot perform the ice making operation. This phenomenon is likely to occur even when the concentration of water is low, and ice clogging progresses rapidly, which hinders stable ice making.

When moisture is mixed in the antifreeze 4 for preventing freezing guided to the antifreeze pipe 14a, the following occurs. 0 ° C
The above antifreezing liquid 4 for preventing freezing is sent to the outer pipe 22 of the antifreezing liquid jet nozzle 12 having a double pipe structure, and is discharged and sprayed from the outer pipe 22 of the jet nozzle 12 into the water 2 in the ice making cylinder 3. It comes into contact with the low-temperature antifreeze 4 having a temperature of 0 ° C. or less discharged and sprayed from the inner tube 21, and is cooled to mix the water into ice.

Now, the antifreeze 4 for preventing freezing blown out from the flow path between the inner pipe 21 and the outer pipe 22 of the antifreeze jet nozzle 12.
However, there is a case that the air flows around the inner pipe 21 immediately after the air is blown, and is caught near the inner wall of the inner pipe 21 through which the low-temperature antifreeze 4 at 0 ° C. or lower flows. A technique of devising the tip shape of the antifreeze jet nozzle 12 to suppress the entrainment has been considered, but cannot completely prevent it. For this reason, the mixed water is cooled by the low-temperature antifreeze 4 and the inner wall surface of the cooling inner tube 21 to become ice, and ice is deposited on the inner wall of the inner tube 21. The iced static ice comes in contact with the water 2 while being cooled by the antifreeze 4, so that it grows and eventually becomes an obstacle to the ejection of the antifreeze 4, and the antifreeze jetting portion 1 of the antifreeze jet nozzle 12.
The tip of 2a is closed, or the ice making cylinder 3 is closed, and the water 2 becomes extremely difficult to flow.

The present invention has been made in view of the above circumstances, and suppresses the freezing of water in a refrigerator caused by entrainment of water in antifreeze in an antifreeze storage portion and icing at the tip of an antifreeze jet nozzle. Accordingly, it is an object of the present invention to provide an ice heat storage device capable of realizing stable ice making and reducing the filling amount of antifreeze.

[0022]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an ice heat storage device using the following means. The invention corresponding to claim 1 is an ice making tank containing water and a non-water-soluble antifreeze having a higher specific gravity than water and water.
After cooling the antifreeze recovered from the inside of the ice making tank by an antifreeze pump to a temperature lower than 0 ° C. by a refrigerator, the antifreeze is allowed to flow from an antifreeze jet nozzle opened above the interface between the water and the antifreeze, and to be mixed with water. An antifreeze circulating system for producing fine ice particles by heat exchange, and forming an antifreeze storage portion that is recessed downward on a part of the bottom surface of the ice making tank,
An inclined portion that is inclined obliquely downward is formed at a portion connected to the bottom surface of the ice making tank from both open ends of the antifreeze storage portion.

According to a second aspect of the present invention, there is provided an ice-making tank containing water-insoluble, antifreeze having a specific gravity greater than that of water and water, and the antifreeze recovered from the ice-making tank by an antifreeze pump at 0.degree. After cooling to a lower temperature, the antifreeze circulating system flows through an antifreeze jet nozzle opened above the interface between the water and the antifreeze to produce fine ice particles by heat exchange with water, and the ice making tank. A water circulation system provided in communication with an upper portion of the ice making tank, wherein water taken from an intake port of the ice storage tank for storing ice moved from the ice making tank flows into the ice making tank by a water pump. An antifreeze liquid storage portion that is recessed downward is formed in a part of the bottom surface of the tank, and an inclined surface that is inclined obliquely downward is formed at a portion connected to the bottom surface of the ice making tank from both open ends of the antifreeze liquid storage portion.

According to a third aspect of the present invention, in the ice heat storage device according to the first or second aspect, the antifreeze is jetted horizontally to the antifreeze jet nozzle at a position above an interface between water and the antifreeze. To be provided.

According to a fourth aspect of the present invention, fine ice particles are generated by flowing water and an antifreeze liquid having a specific gravity lower than water and having a specific gravity lower than that of water at a temperature lower than 0 ° C., which is provided vertically. An ice-making cylinder, an ice-making tank which is provided vertically in communication with the lower part of the ice-making cylinder, raises water flowing down to the lower part of the ice-making cylinder and raises ice particles, and water taken from an intake port of the ice-making tank. A water circulation system that allows the water pump to flow into the interior of the ice making cylinder from the top, and an antifreeze circulation system that collects the antifreeze flowing down to the lower part of the ice making cylinder and flows into the interior from the top of the ice making cylinder by the antifreeze pump. An antifreeze liquid storage portion is formed on a part of the bottom surface of the ice making tank. The antifreeze liquid storage portion is formed with a downwardly sloping portion. Form.

According to a fifth aspect of the present invention, fine ice particles are generated by flowing water and an antifreeze solution having a specific gravity lower than water, which is lower than 0 ° C., from the top of the head. An ice making cylinder, an ice making tank which is provided vertically in communication with the lower part of the ice making cylinder, and an ice making tank which raises water and ice particles flowing down the lower part of the ice making cylinder, and which is provided in communication with an upper part of the ice making tank. An ice storage tank for storing ice moved from the ice making tank,
A water circulation system for flowing water taken from the water intake of the ice storage tank into the inside of the ice making cylinder from the top by a water pump,
An antifreeze circulating system for collecting the antifreeze flowing down to the lower portion of the ice making cylinder and flowing the antifreeze into the inside of the ice making cylinder from the top by an antifreeze pump; and an antifreeze storage portion recessed downward at a part of the bottom surface of the ice making tank. And an inclined portion that is inclined obliquely downward from the opening ends on both sides of the antifreeze storage portion to the bottom surface of the ice making tank.

According to a sixth aspect of the present invention, fine ice particles are generated by flowing water and an antifreeze solution having a specific gravity lower than water, which is water-insoluble and less than water, at a temperature lower than 0 ° C., which is provided vertically. An ice making cylinder, an ice making tank that is provided vertically in communication with the lower part of the ice making cylinder, and raises water and ice particles flowing down to the lower part of the ice making cylinder, and is connected and connected to the upper part of the ice making tank. A transport pipe that transports a two-phase flow of water and ice to a predetermined location, and an ice heat storage water tank that stores a two-phase flow of water and ice that is transported through the transport pipe and flows down from an open end,
A water circulation system for allowing water taken from an intake port of the ice storage water tank to flow into the inside of the ice making cylinder from the top by a water pump, and collecting the antifreeze liquid flowing down to the lower part of the ice making tank, and using the antifreeze liquid pump to collect the antifreeze liquid; An antifreeze circulating system that flows into the interior from the top of the ice storage tank, wherein the ice making cylinder, the antifreeze collection part, the ice making tank, and the transport pipe are each sealed and integrally connected, and the ice making tank is An antifreeze liquid storage portion is formed on a part of the bottom surface of the ice making tank, and an inclined portion inclined obliquely downward is formed at a portion connected to the bottom surface of the ice making tank from both open ends of the antifreeze liquid storage portion.

According to a seventh aspect of the present invention, there is provided the ice heat storage device according to the second or fifth aspect, wherein a plurality of ice-making tanks are provided, and the ice storage tank is adjacent to the ice storage tank so that ice can be transferred from different positions. To be provided.

In the ice heat storage device according to the first to seventh aspects of the present invention, the antifreeze flowing into the antifreeze storage portion is connected to the bottom of the ice making tank from both open ends of the antifreeze storage portion 5. Since the inclined section is formed in the antifreeze liquid storage section, the increase in the cross-sectional area of the flow path of the antifreeze liquid reduces the flow velocity of the antifreeze liquid, and the flow becomes smooth and smooth. Water droplets are less likely to flow into the antifreeze reservoir. Further, water bubbles existing near the interface between water and the antifreeze liquid are less likely to be separated by the reduced flow velocity. As a result, the entrapment of water bubbles and fine water droplets into the antifreeze liquid storage portion is reduced, and the water bubbles and fine water droplets sucked out of the antifreeze liquid storage portion are reduced accordingly.

Therefore, it is possible to suppress freezing and clogging of the water inside the refrigerator caused by entrainment of water into the antifreeze in the antifreeze reservoir and to prevent icing at the tip of the antifreeze jet nozzle, thereby realizing stable ice making and reducing the amount of antifreeze filling. Can be reduced.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are general schematic diagrams showing a first embodiment of an ice heat storage device according to the present invention. FIG. 2 shows an outline of the ice making tank 1 omitting the ice making system, the twelve ice making cylinders 3, the antifreeze circulating system, and the water circulating system. Note that the * parts in FIG. 1 indicate that they are connected to the top of the ice making cylinder 3 (not shown).

1 and 2, reference numeral 1 denotes an elongated vertical ice-making tank for storing water 2 therein, and 3 denotes an ice-making cylinder provided vertically adjacent to the ice-making tank 1. The bottom part is connected to the lower part of the ice making tank 1 by a connecting part 8.

An antifreeze reservoir 5 is formed at a part of the bottom surface of the ice making tank 1 and is recessed downward. The antifreeze 4 is collected in the antifreeze reservoir 5. This antifreeze reservoir 5 is shown in FIG.
As shown in (b), a portion connected to the bottom surface of the ice making tank 1 from both open ends of the liquid storage portion 5 is formed as an inclined portion 6 inclined downward at an appropriate angle. The inclined portion 6 may be a continuous surface or a curved surface, and may have any of a plurality of steps.

A water intake 10 is formed in the upper part of the ice making tank 1, and a wire net 11 is provided below the water intake 10. Further, an antifreeze jet nozzle 12 is provided at the top of the ice making cylinder 3.

On the other hand, a refrigerator 13 is connected by a pipe 14a between the refrigerator 13 and the antifreeze reservoir 5 at the bottom of the ice making tank 1, and an antifreeze pump 15 is provided in the middle thereof. The antifreeze pump 15 guides the antifreeze 4 collected in the antifreeze storage part 5 at the bottom of the ice making tank 1 via the refrigerator 13 to the low temperature antifreeze outlet 12a provided at the upper part of the ice making cylinder 3 through the pipe 14c. A valve 16a is provided in the piping 14a on the inflow side of the refrigerator 13,
A flow meter 17b is provided on a pipe 14c connecting the low-temperature antifreeze outlet 12a and the low-temperature antifreeze outlet 12a.

Further, water is taken in from the water intake port 10 provided in the upper part of the ice making tank 10 by a water pump 18 via a pipe 14d, and the water is taken out of the pump discharge port through a pipe 14e and provided in the upper part of the ice making cylinder 3 in the upper part. Water outlet 1 located on the outer periphery
Water is sent to 2c. In this case, the valve 14 is connected to the pipe 14e.
6c and a flow meter 17c are provided.

The antifreeze jet nozzle 12 has a double-pipe structure. The antifreeze 4 at 0 ° C. or lower flows through the inner pipe 21.
An antifreeze circulating system including a refrigerator 13, an antifreeze pump 15, and the like is connected so that the antifreeze 4 at 0 ° C. or higher flows between the outer tube 22 and the outer tube 22.

On the other hand, the top of the ice making cylinder 3 has a structure as shown in FIG. The antifreeze jet nozzle 12 has a double structure of an inner pipe 21 and an outer pipe 22, and the antifreeze jet nozzle 1
The second inner pipe 21 is connected to the antifreeze suction port 23 of the antifreeze storage part 5 via antifreeze pipes 14a and 14c. An antifreeze pump 15 and a refrigerator 13 are sequentially provided in the antifreeze pipe 14 a in the flow direction of the antifreeze 4. Further, a branch pipe 14 b branched between the antifreeze pump 15 of the antifreeze pipe 14 a and the refrigerator 13 is connected to the outer pipe 22 of the antifreeze jet nozzle 12.

The antifreeze 4 cooled to a temperature of 0 ° C. or lower by the refrigerator 13 is supplied to the antifreeze jet nozzle 12 through the antifreeze pipe 14 c.
Is sprayed into the water 2 in the ice making cylinder 3 from the inner pipe 21.
On the other hand, the rest of the antifreeze 4 guided to the antifreeze pipe 14a passes through the branch pipe 14b, and the antifreeze jet nozzle 1 having a double pipe structure.
2 to the outer tube 22. The antifreeze 4 does not pass through the refrigerator 13 from the antifreeze reservoir 5 and is supplied to the antifreeze jet nozzle 12.
The antifreeze 4 at a temperature of 0 ° C. or higher is sent to the outer tube 2 of the ejection nozzle 12.
The water 2 is discharged into the water 2 in the ice making cylinder 3 and dispersed.

At this time, the film of antifreeze 4 at 0 ° C. or higher
It melts the static ice that is going to adhere to the opening end 12a of the inner tube 21, prevents freezing of the antifreeze jet nozzle 12, and enables the antifreeze jet nozzle 12 to continuously deposit ice particles 7.

Although not shown, an ice melting system for melting the ice 7 at the time of cooling in the daytime is added to the ice making tank 1 after the ice making at night is completed. Further, as the antifreeze 4, a liquid (for example, trade name: Fluorinert) which is two elements of fluorine and carbon may be used.

Next, the operation of the ice heat storage device configured as described above will be described. During the ice making operation, the low-temperature antifreeze 4 cooled to a temperature below the freezing point by the refrigerator 13 is supplied to the ice making cylinder 3 from the jet port 12a.
And mixed with water 2. At this time, around the low-temperature antifreeze 4, water 2 having a relatively low jet velocity is provided.
Flows out from the jet port 12c.

As described above, the low-temperature antifreeze 4 flowing out of the jet port 12a exchanges heat with the surrounding water 2 while descending in the water 2 together with the antifreeze 4 flowing out of the jet port 12b.
When the ice 7 and the antifreeze 4 deposited by the heat exchange descend to some extent, they have a relative speed to each other, but at a constant speed, respectively, and descend vertically inside the ice making cylinder 3. In this case, the water 2 is cooled by the antifreeze 4 and the precipitation of ice 7 is partially observed.

Thus, the cold heat of the antifreeze 4 is stored as the heat of solidification of the ice 7, and the temperature of the antifreeze 4 is raised to 0 ° C. while the water temperature is almost 0 ° C. The flow of the water 2 containing the ice 7 descending to the lower part of the ice making cylinder 3 is converted from the vertical direction to the horizontal direction by the connecting part 8 with the ice making tank 1, and is guided to the ice making tank 1 smoothly. The ice 7 guided to the ice making tank 1 through the connecting portion 8 slowly rises inside the ice making tank 1 with the flow of the water 2 going upward, and is stored as sherbet ice 7 due to the buoyancy of the ice 7 itself and the convection effect. You.

In this case, the ice 7 stored in the upper part of the ice making tank 1 is prevented from being sucked from the water intake port 10 by the wire net 11, and floats in a form that widely covers the water surface. In addition, since the wire net 11 is provided as a filter near the intake port 10, the ice 7 is not supplied from the intake port 10 into the ice making cylinder 3 through the pipes 14d and 14e.
A high density sherbet-like ice 7 can be stored in the upper part of the table.

Here, an operation when the ice flows from the bottom of the ice making cylinder 3 to the antifreeze storage part 5 formed at the bottom of the ice making tank 1 through the connecting part 8 will be described. The antifreeze 4 flowing into the antifreeze storage 5 has an inclined portion 6 formed at a portion connected to the bottom surface of the ice making tank 1 from both open ends of the antifreeze storage 5 as shown in FIG. As the cross-sectional area of the antifreeze 4 flowing into the reservoir 5 increases, the flow velocity of the antifreeze 4 is reduced, and the flow becomes smooth and smooth. For this reason, the floating water bubbles 19 and the minute water droplets 20 do not easily flow into the liquid storage portion 5. Also, the interface 9 between the water separation 2 and the antifreeze 4 whose flow velocity has been reduced.
Water bubbles 19 present in the vicinity are less likely to be separated. Thereby, the entanglement of the water bubbles 19 and the minute water droplets 20 into the antifreeze solution storage unit 5 is reduced, and the water bubbles 19 and the minute water droplets 20 sucked out from the antifreeze solution storage unit 5 are reduced accordingly.

As a result, in the refrigerator 13, the water 2 contained in the antifreeze 4 is frozen and the ice clogging of the refrigerator 13 occurs.
Antifreeze nozzle 1 caused by freezing of water 2 contained in water
Icing at the tip of No. 2 is suppressed.

Further, even if the antifreeze interface 9 is made lower, the water bubbles 19 and minute water droplets 20 are less likely to be sucked out, so that the amount of the antifreeze 4 to be filled in the ice heat storage device can be reduced. FIGS. 4 and 5 are schematic configuration diagrams showing a second embodiment of the ice heat storage device according to the present invention. The same components as those in FIGS. 1 and 2 are denoted by the same reference numerals and description thereof is omitted. FIG. 5 shows the outline of the ice making tank 1 and the ice storage tank 29, omitting the twelve ice making cylinders 3, the antifreeze circulating system, and the water circulating system in addition to the ice melting system. Note that the * parts in FIG. 4 indicate that they are connected to the top of the ice making cylinder 3 (not shown).

In the second embodiment, as shown in FIGS. 4 and 5, an ice storage tank 29 communicating with the ice making tank 1 at an upper portion is provided.
In this ice storage tank 29, the sherbet-shaped ice 32 moved from the ice making tank 1 is stored, and an intake port 10 is provided in a lower part of the ice storage tank 29. Water taken from the intake port 10 by the transport pump 18 is supplied to a pipe 14d. 3A and 3B, an antifreeze liquid storage portion 5 is connected to the bottom surface of the ice making tank 1 from both open ends of the liquid storage portion 5 as shown in FIGS. In FIG. 1, an inclined portion 6 inclined downward at an appropriate angle is formed.
2 and FIG.

In the ice heat storage device having such a configuration,
The sherbet-like ice 7 accumulates in the ice-making tank 1, and when the ice 7 accumulates to a position above the wall 30 between the ice-making tank 1 and the ice storage tank 29, the ice 7 passes through the wall 30 and becomes free from the ice-making tank 1.
It passes through the flow path 31 between the ice storage tank 29 and falls into the ice storage tank 29. At this time, a part of the water 2 may be moved to the ice storage tank 29. Then, the ice 32 is stored in the ice storage tank 29.

Further, since water 2 formed by melting during the deicing operation exists below the ice 32 in the ice storage tank 29, the water 2 is taken from the water intake port 10 of the ice storage tank 29 and transported. The ice is made to flow from the top of the ice making cylinder 3 into the inside by the pump 18.

On the other hand, the antifreeze 4 flowing into the antifreeze storage 5
As shown in FIG. 5, since the inclined portion 6 is formed at a portion connected to the bottom surface of the ice making tank 1 from the open ends on both sides of the antifreeze reservoir 5, the flow path of the antifreeze 4 flowing into the antifreeze reservoir 5 is cut off. The increase in the area reduces the inflow flow velocity and makes the flow smooth and smooth, so that the floating water bubbles and minute water droplets are less likely to flow into the liquid reservoir 5. Further, water bubbles existing near the interface 9 between the water separation 2 and the antifreeze 4 whose flow velocity has been reduced are less likely to be peeled off. Therefore, the entrapment of water bubbles and fine water droplets into the antifreeze liquid storage unit 5 is reduced, and the water bubbles and fine water droplets sucked out of the antifreeze liquid storage unit 5 are reduced accordingly.

In the ice heat storage device having the above-described configuration, the sherbet-like ice 3 stored in the ice storage tank 29 is used.
2 is poured one after another from above the ice 32 and is compressed by gravity, so that the ice filling rate increases. As a result, it is possible to increase the substantial amount of stored ice with respect to the volume of the ice storage portion and the site area, that is, the amount of stored cold energy.

Incidentally, the ice 7 may be dispersed so that the falling position of the ice 7 into the ice storage tank 29 is not concentrated in one place.
In addition, a revolving door is installed on the wall 30 so that ice
When the ice is stored in the ice making tank 1, the revolving door may be driven to rotate to transfer the ice 7 from the ice making tank 1 to the ice storage tank 29.

FIG. 6 is a schematic configuration diagram showing a third embodiment of the ice heat storage device according to the present invention. The same parts as those in FIG. Note that the * parts in FIG. 6 indicate that they are connected to the top of the ice making cylinder 3 (not shown).

In the third embodiment, as shown in FIG. 6, one end of a transport pipe 33 for transporting a two-phase flow of water 2 and ice 7 to a predetermined location on the upper part of the ice making tank 1, that is, on the downstream side. And the water 2 and the ice 7 conveyed through the conveying pipe 33
An ice heat storage water tank 34 for storing the two-phase flow is provided, water 2 is taken in from an intake port of the ice heat storage water tank 34, and the water 2 is flowed into the inside from the top of the ice making cylinder 3 by the transport pump 18. The antifreeze 4 is sucked by the antifreeze pump 15 from the antifreeze suction port 23 of the antifreeze storage 5 at the bottom, and the ice making cylinder 3
3A, the antifreeze reservoir 5 is formed as an antifreeze storage nozzle 5.
As shown in FIG. 2B, an inclined portion 6 which is inclined downward at an appropriate angle is formed at a portion connected to the bottom of the ice making tank 1 from both open ends of the liquid storage portion 5.

In this case, the ice making tank 1 and the ice making cylinder 3 constitute an ice making part 35. In the ice heat storage device having such a configuration, since the space from the ice making tank 1 to the ice heat storage water tank 34 is in a sealed state, the ice heat storage device is transported to a target place while maintaining a constant amount of cold heat even if the distance is long. can do.

On the other hand, the antifreeze 4 flowing into the antifreeze storage 5
In the same manner as in the first embodiment, since the inclined portion 6 is formed at a portion connected to the bottom surface of the ice making tank 1 from both open ends of the antifreeze reservoir 5, the antifreeze 4 flowing into the antifreeze reservoir 5 is formed.
Since the flow cross-sectional area is increased, the inflow velocity is reduced and the flow becomes smooth and smooth, so that floating water bubbles and minute water droplets are less likely to flow into the liquid storage portion 5. Further, water bubbles existing near the interface 9 between the water separation 2 and the antifreeze 4 whose flow velocity has been reduced become difficult to separate. Therefore, the entrapment of water bubbles and fine water droplets into the antifreeze liquid storage unit 5 is reduced, and the water bubbles and fine water droplets sucked out of the antifreeze liquid storage unit 5 are reduced accordingly.

FIG. 7 is a schematic configuration diagram showing a fourth embodiment of the ice heat storage device according to the present invention. The same components as those in FIG. Note that the * parts in FIG. 7 indicate that they are connected to the top of the ice making cylinder 3 (not shown).

In the above-described first to third embodiments, the ice making tank 1 and the ice making cylinder 3 are connected by the connecting part, and the antifreeze 4 is directed downward from the top of the ice making cylinder 3. In the fourth embodiment, as shown in FIG. 7, an ice-making tank 1 serving also as an ice-making cylinder is provided. After the antifreeze 4 collected by the antifreeze pump 15 from the antifreeze reservoir 5 formed at the bottom of the ice making tank 1 is cooled to a temperature lower than 0 ° C. by the refrigerator 13, the interface between the water 2 and the antifreeze 4 An antifreeze circulating system that generates fine ice particles 7 by flowing horizontally from an antifreeze jet nozzle 12 that is opened at a position higher than 9 is formed. A pipe 14d connects the upper part of the ice-making tank 1 and the lower part of the antifreeze liquid interface 9 above the antifreeze liquid interface 9, and a water pump 18 provided in the pipe 14d is provided.
Constitutes a water circulation system for circulating the water 2.

Here, the antifreeze jet nozzle 12 has a double pipe structure, and allows the antifreeze 4 having a temperature lower than 0 ° C. to flow through the inner pipe 21 and a temperature higher than 0 ° C. between the inner pipe 21 and the outer pipe 22. It has a circulating system that allows antifreeze to flow. In addition, the antifreeze storage part 5 provided at the bottom of the ice making tank 1 is shown in FIG.
As in the first embodiment shown in FIG. 2B, an inclined portion 6 inclined downward at an appropriate angle is formed at a portion connected to the bottom of the ice making tank 1 from both open ends of the liquid storage portion 5.

In the ice heat storage device having such a configuration,
Although the configuration is simple and the installation area of the apparatus may be large, it is suitable when the height of the entire apparatus is to be reduced. On the other hand, since the antifreeze 4 flowing into the antifreeze storage 5 has the inclined portion 6 formed at a portion connected to the bottom surface of the ice making tank 1 from both open ends of the antifreeze storage 5 as in the first embodiment. In the same manner as in the first embodiment, the entrapment of water bubbles and minute water droplets into the antifreeze storage part 5 is reduced, and the antifreeze storage part 5 is accordingly reduced.
Water bubbles and fine water droplets sucked out of the water can be reduced.

FIG. 8 is a schematic configuration diagram showing a fifth embodiment of the ice heat storage device according to the present invention. The same components as those in FIG. Note that the * parts in FIG. 8 indicate that they are connected to the top of the ice making cylinder 3 (not shown).

In the eighth embodiment, the water storage tank 29 described in the second embodiment is provided in addition to the configuration shown in FIG. With the ice heat storage device having such a configuration, the same operation and effect as those described in the second embodiment and the fourth embodiment can be obtained.

As a sixth embodiment, the configuration shown in FIG. 7 is provided with a transport pipe 33 and an ice heat storage water tank 34 shown in FIG.
The same operation and effect as described in the embodiment can be obtained.

FIG. 9 is a schematic diagram showing a seventh embodiment of the ice heat storage device according to the present invention. The same parts as those in FIGS. 2 and 5 are denoted by the same reference numerals, and description thereof is omitted. FIG. 9 omits not only the ice-making system but also 12 ice-making cylinders 3, an antifreeze circulating system, and a water circulating system, and shows an outline of the ice-making tank 1 and the ice storage tank 29.

In the seventh embodiment, another ice making tank 1 is provided for the ice heat storage device shown in FIG. 4 described in the second embodiment. That is, ice making tank 1
Is transferred to the ice storage tank 29 together with the water 2, and another ice making tank 1 is provided so as to have a transfer position opposite to the transfer position.

With this configuration, when the number of the ice making tanks 1 is one, a place far from the transfer position is a sherbet-like ice 32.
However, when the sherbet-shaped ice 32 is transferred from the two ice-making tanks 1 to the ice storage tank 29, the sherbet-shaped ice 32 can be uniformly stored in the ice storage tank 29.

It is to be noted that, even if the second ice-making tank 1 is not located at a position opposite to the first ice-making tank 1, the second ice-making tank 1 is more uniform than when only one ice-making tank 1 is provided. Alternatively, the number of ice-making tanks may be increased, and the sherbet-shaped ice 32 may be transferred from the number of directions.

[0070]

As described above, according to the present invention, freezing of water in the refrigerator caused by entrainment of water in the antifreeze in the antifreeze storage part and icing at the tip of the antifreeze jet nozzle are suppressed, thereby achieving stability. It is possible to provide an ice heat storage device capable of realizing ice making and reducing the filling amount of antifreeze.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a first embodiment and a conventional example of an ice heat storage device according to the present invention.

FIG. 2 is a schematic diagram showing the entire configuration of the first embodiment of the present invention.

FIG. 3 is a schematic configuration diagram in the vicinity of an antifreeze storage section in the embodiment.

FIG. 4 is a configuration diagram showing a second embodiment of the ice heat storage device according to the present invention.

FIG. 5 is a schematic diagram showing the overall configuration of the embodiment.

FIG. 6 is a configuration diagram showing a third embodiment of the ice heat storage device according to the present invention.

FIG. 7 is a configuration diagram showing a fourth embodiment of the ice heat storage device according to the present invention.

FIG. 8 is a configuration diagram showing a fifth embodiment of the ice heat storage device according to the present invention.

FIG. 9 is a schematic diagram showing an overall configuration of an ice heat storage device according to a seventh embodiment of the present invention.

FIG. 10 is a schematic diagram showing the overall configuration of a conventional ice heat storage device.

FIG. 11 is a configuration diagram showing an upper part of an ice making cylinder of a conventional apparatus.

FIG. 12 is a configuration diagram showing the vicinity of a storage unit of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ice making tank 2 ... Water 3 ... Ice making cylinder 4 ... Antifreeze liquid 5 ... Antifreeze liquid storage part 6 ... Inclination part 7 ... Sherbet-like ice 8 ... Connection part 9 ... Interface 10 ... Water intake part 11 Wire mesh 12 Antifreeze jet nozzle 13 Refrigerator 14a to 14e Piping 15 Antifreeze pump 16a to 16c Valve 17a to 17c Flow meter 18 Water pump 19 Water bubble 20 ... minute water droplets 21 ... inner tube 22 ... outer tube 23 ... antifreeze suction port 29 ... storage tank 30 ... wall 31 ... flow path 32 ... sherbet-like ice 33 ... ... transfer pipe 34 ... ... ice storage water tank

Claims (7)

[Claims] 1. An ice-making tank containing water-insoluble, antifreeze having a higher specific gravity than water and water, and the antifreeze recovered from the ice-making tank by an antifreeze pump is cooled to a temperature lower than 0 ° C. by a refrigerator. An antifreeze circulating system that flows through an antifreeze jet nozzle opened above the interface between the water and the antifreeze to produce fine ice particles by heat exchange with water. An ice heat storage device, wherein an antifreeze liquid storage portion that is recessed downward is formed in the portion, and an inclined portion that is inclined obliquely downward is formed at a portion connected to the bottom surface of the ice making tank from both open ends of the antifreeze liquid storage portion. . 2. An ice-making tank containing water-insoluble, antifreeze having a higher specific gravity than water and water, and the antifreeze recovered from the ice-making tank by an antifreeze pump is cooled to a temperature lower than 0 ° C. by a refrigerator. An antifreeze circulating system that flows through an antifreeze jet nozzle opened above the interface between the water and the antifreeze and produces fine ice particles by heat exchange with water, and is provided in communication with the ice making tank at an upper portion. A water circulation system for flowing water taken from an intake port of an ice storage tank that stores ice moved from the ice making tank into the ice making tank by a water pump, and a part of a bottom surface of the ice making tank. An ice heat storage device, comprising: an antifreeze solution storage portion that is recessed downward; and an inclined portion that is inclined obliquely downward from a portion connected to the bottom surface of the ice making tank from both open ends of the antifreeze solution storage portion. 3. The ice heat storage device according to claim 1, wherein the antifreeze jet nozzle is provided at a position above an interface between the water and the antifreeze so that the antifreeze is jetted horizontally. Ice storage device. 4. An ice-making cylinder which is provided vertically and in which water and a water-insoluble and non-freezing liquid having a specific gravity lower than that of water and having a temperature lower than 0 ° C. are introduced from the top of the head to generate fine ice particles, and the ice-making cylinder. An ice-making tank which is provided vertically in communication with the lower part of the cylinder and raises water and ice particles flowing down to the lower part of the ice-making cylinder; and A water circulation system for flowing in from the top of the ice making cylinder, and an antifreeze liquid circulation system for collecting the antifreeze flowing down to the lower part of the ice making cylinder and flowing it into the inside of the ice making cylinder from the top of the ice making cylinder by an antifreeze pump. A part of the bottom surface is formed with an antifreeze liquid storage part that is recessed downward, and an inclined part that is inclined obliquely downward is formed at a part that is connected to the bottom surface of the ice making tank from both open ends of the antifreeze liquid storage part. Ice storage device. 5. An ice-making cylinder which is provided vertically and which allows water and a water-insoluble and antifreeze liquid having a specific gravity lower than that of water and lower than 0 ° C. to flow in from the top of the head to generate fine ice particles, and the ice-making cylinder. An ice-making tank that is provided vertically in communication with the lower part of the cylinder and raises water and ice particles flowing down to the lower part of the ice-making cylinder; and ice that is provided in communication with the upper part of the ice-making tank and moves from the ice-making tank. An ice storage tank for storing the water, a water circulation system for allowing water taken from an intake port of the ice storage tank to flow in from the top of the ice making cylinder by a water pump, and an antifreeze liquid pump for collecting an antifreeze liquid flowing down to a lower part of the ice making cylinder. An antifreeze circulating system that allows the antifreeze liquid to flow into the inside from the top of the ice making cylinder is formed.A part of the bottom surface of the ice making tank is formed with an antifreeze storage portion that is recessed downward. Connected to the bottom of the ice making tank Ice thermal storage apparatus characterized by forming the inclined portion inclined obliquely downward to the portion that. 6. An ice-making cylinder which is provided vertically and which allows water and a water-insoluble and antifreeze liquid having a specific gravity lower than that of water, which is lower than 0 ° C., to flow in from the top of the head to generate fine ice particles. An ice-making tank which is provided vertically in communication with the lower part of the cylinder and raises water and ice particles flowing down to the lower part of the ice-making cylinder; and a two-phase flow of the water and ice which is connected and connected to the upper part of the ice-making tank. Piping, a cooling water tank that stores a two-phase flow of water and ice that is conveyed through the transfer pipe and flows down from the opening end, and water that is withdrawn from an intake port of the cooling water tank. A water circulation system that allows the water to flow into the interior from the top of the ice making cylinder by a water pump, and an antifreeze circulation system that collects the antifreeze flowing down to the lower part of the ice making tank and flows into the interior from the top of the ice making cylinder by the antifreeze pump. With
In the ice heat storage device in which the ice making cylinder, the antifreeze liquid collecting part, the ice making tank, and the transport pipe are each integrally connected in a sealed state, an antifreeze liquid storing part which is recessed downward is formed in a part of the bottom surface of the ice making tank. An ice heat storage device characterized in that an inclined portion that is inclined obliquely downward is formed at a portion connected to the bottom surface of the ice making tank from both open ends of the antifreeze storage portion. 7. The ice heat storage device according to claim 2, wherein a plurality of ice making tanks are provided, and ice is provided adjacent to the ice storage tank so that ice can be transferred from different positions. Heat storage device.