JPH1054631A - Ice storage device - Google Patents

Abstract

(57) [Summary] The present invention suppresses icing at a nozzle opening to prevent ice clogging, thereby improving reliability. SOLUTION: Since the distal end of an inner tube 31 is located inward in the axial direction from the distal end of an outer tube 22, 0 ° C.
Entrainment of the antifreeze 4 at a higher temperature into the inner tube 31 is suppressed, and at the same time, the antifreeze 4 at a temperature higher than 0 ° C. warms the lower end surface of the inner tube 31 or moves the lower end of the inner tube 31 away from the water 1. An ice thermal storage device that prevents the entrainment of water and the growth of icing static ice.

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 fine sherbet-like ice particles and used in an air conditioner or the like. The present invention relates to an ice heat storage device capable of preventing entrainment of antifreeze.

[0002]

2. Description of the Related Art In recent years, electric energy consumption in the industrial and consumer fields has been increasing. In addition, the maximum power consumption throughout the year occurs during the daytime in summer due to the spread of cooling. For this reason, the difference in power consumption between day and night is widened, and a social problem of reducing the load factor of the power equipment is occurring.

[0003] From the viewpoint of leveling the power load in summer, in a relatively large-scale air-conditioning system in an industrial plant or a building, an ice heat storage device that effectively uses low-cost nighttime power has been put into practical use. ing.

[0004] This ice heat storage device generally produces ice using nighttime electric power, thaws the ice during the daytime, and extracts cold heat. In other words, by reducing power demand during peak hours of air conditioning load in the daytime and by using power during low peak hours during off-peak hours at night, both supply and demand sides, such as stable power supply and economical operation of air conditioning systems, It can also respond to social demands such as profits and suppression of carbon dioxide generation.

More specifically, in this type of ice heat storage device, sherbet-shaped ice is produced by a refrigerator using nighttime electric power, which tends to be excessive, and the sherbet-shaped ice and fine ice particles are formed to form a water tank. Floating in the air, refluxing warm water after cooling load absorption in the daytime, mixing, melting ice and using the cold heat for air conditioning and industrial use (commonly called dynamic method) was developed. Have been.

[0006] Such an ice heat storage device is disclosed in, for example, JP-A-5-5541, JP-A-5-240476,
JP-A-5-280769, JP-A-4-23603
No. 2 and JP-A-3-140767.

FIG. 13 is a schematic diagram showing the configuration of this type of ice heat storage device. The ice heat storage device includes an elongated vertical water tank 2 for storing water 1 therein and a mixing pipe 3 installed adjacent to the water tank 2. Antifreeze 4 at the bottom of the water tank 2
Is formed at the bottom of the mixing tube 3. Similarly, a cup-shaped recovery unit 6 is formed at the bottom of the mixing tube 3. The collecting sections 5 and 6 are connected to each other via a pipe 7.

The water tank 2 and the lower part of the mixing tube 3 are connected via a connecting portion 8 so that the vicinity of the interface 9 between the antifreeze 4 and the water 1 communicates. A water intake unit 10 is formed in the upper part of the water tank 2.
1 is provided.

Further, a nozzle 12 having a double structure is provided above the mixing tube 3. The nozzle 12 includes a low-temperature antifreeze liquid outlet 12a and a water outlet 12b.

On the other hand, a refrigerator 13 is provided in the vicinity of the mixing pipe 3, and the refrigerator 13 and the collecting section 6 at the bottom of the mixing pipe 3 are connected by a pipe 14a. is set up. The pump 15 guides the antifreeze 4 collected in the collecting section 6 at the bottom of the mixing tube 3 via the refrigerator 13 to the low-temperature antifreeze liquid outlet 12a disposed above the mixing tube 3 through the pipe 14b. A valve 16a is provided in the piping 14a on the inflow side of the refrigerator 13,
A flow meter 17a is provided in a pipe 14b connecting the low-temperature antifreeze outlet 11a and the low-temperature antifreeze outlet 11a.

In addition, an intake port 1 provided on the upper part of the water tank 2
0 through the pipe 14c by the pump 18 through the pipe 14c, and the water is discharged from the discharge port of the pump 18 through the pipe 14d to the water outlet 1 located at the outermost peripheral portion provided above the mixing pipe 3.
Send water to 2b. In this case, the valve 16 is connected to the pipe 14d.
b and a flow meter 17b.

Next, the operation of such an ice heat storage device will be described. Now, assuming that the ice making operation is being performed, the low-temperature antifreeze 4 cooled to a temperature below the freezing point by the refrigerator 13 flows out of the outlet 12a into the mixing pipe 3, and the water outlet 1
It is mixed with the water 1 flowing out of 2b.

At this time, the low-temperature antifreeze 4 exchanges heat with the surrounding water 1 while descending in the water 1. The water 1 is cooled by the antifreeze 4 and the precipitation of ice 20 is observed partially. In this manner, the cold heat of the antifreeze 4 is stored as the heat of solidification of the ice 20, and the antifreeze 4 remains at a water temperature of approximately 0 ° C.
Is heated to 0 ° C.

Thus, ice is produced inside the mixing tube 3. However, since there is a downward flow of the water 1 and the antifreeze 4, the particles of the ice 20 flow down independently of each other. The flow of the water 1 containing the ice 20 descended to the lower part of the mixing tube 3 is converted from the vertical direction to the horizontal direction by the connecting portion 8 with the water tank 2, and is smoothly guided to the water tank 2.

Therefore, the mixing tube 3 can take a sufficiently long distance irrespective of the shape of the water tank, and a sufficient heat exchange can be achieved. On the other hand, the ice 20 guided to the water tank 2 through the connecting portion 8 slowly rises inside the water tank 2 with the flow of the water 1 going upward, and the ice 20 is stored as sherbet ice 20 by its own buoyancy and convection effect. You. In this case, the ice 20 stored in the upper part of the water tank 2 is prevented from being sucked from the water intake port 10 by the wire mesh 11, and floats in a form that widely covers the water surface.

Although not shown, an ice melting system is added to the water tank 2 in which ice making at night is completed and ice is melted during a cooling / heating load in daytime. According to such an ice heat storage device, ice is made by the mixing pipe 3 vertically arranged adjacent to the water tank 2 even in the elongated vertical water tank 2, and the lower part thereof is connected by the connecting part 8, and the communicating part is formed. Through the ice 20 and water 1
Because it floats on the upper part of the table, continuous stable ice making is possible.

Further, since the wire net 11 is provided as a filter near the water intake 10, the ice 20 is not supplied from the water intake 10 to the inside of the mixing pipe 3 through the pipes 14c and 14d. A high density sherbet-like ice 20 can be accumulated on the upper part of the second.

[0018]

However, in the above-described ice heat storage device, even if the nozzle 12 is made of a material having good heat insulation properties, the antifreeze liquid outlet 12a at the tip of the nozzle 12 remains in the water 1 during the ice making operation. Freezes and, as shown in FIG. 14, lands on the tip of the low-temperature antifreeze liquid outlet. The iced static ice 20a comes in contact with the water 1 while being cooled by the antifreeze 4 and thus grows, and eventually becomes an obstacle to the blowing of the antifreeze 4, and the antifreeze outlet 12a of the antifreeze nozzle 12 is closed. Or mixing tube 3
And make the water 1 extremely difficult to flow. In the case where the antifreeze 4 cooled to 0 ° C. or less drifts without descending immediately below due to the presence of the static ice 20a, or when there is a portion where the static ice 20a has grown sufficiently close to the inner wall, the static ice 20a and the inner wall Since the antifreeze 4 may pass through the space, the inner wall of the mixing tube 3 is cooled, and porous icing occurs on the inner wall of the mixing tube 3. The static ice 20b also grows and promotes the closing of the mixing tube 3. As a result, the ice making operation becomes impossible, and further, the internal pressure at the upper part of the mixing tube 3 rises, and a dangerous state occurs. In this case, the ice making operation is stopped and the static ice 20a, 2
After melting 0b, the operation of restarting the ice making operation is repeatedly performed, and the ice making operation cannot be continuously performed.

Now, such a low temperature antifreeze liquid outlet 12a
In order to prevent icing, there is a technique in which the antifreeze nozzle 12 itself has a double tube structure as disclosed in Japanese Patent Application Laid-Open No. 5-346242.

More specifically, as shown in FIGS. 15 to 18, the inner pipe 21 and the outer pipe 22 have a double pipe structure, and the antifreeze 4 at a temperature of 0 ° C. or less flows through the inner pipe 21 and the inner pipe 21 and the outer pipe 22. And connected to a circulating cooling device so that the antifreeze 4 at 0 ° C. or higher flows between them. For example, the pipe 14 b is connected to the inner pipe 21 from the collection unit 6 via the refrigerator 13, and the pipe 14 e is connected to the outer pipe 22 from the collection unit 6 without passing through the refrigerator 13.

In such an ice thermal storage device, the antifreeze 4 at 0 ° C. or lower flowing through the inner pipe 21 of the antifreeze blowing nozzle is mixed with the mixing pipe 3.
The water 2 contacting the discharged and sprayed antifreeze 4 is frozen, and at this time, a film of the antifreeze 4 at 0 ° C. or higher flowing between the inner pipe 21 and the outer pipe 22 forms a tip of the inner pipe 21. Of water below 0 ° C. is prevented to prevent the generation of static ice 20a at the antifreeze outlet 12a.

However, in actual operation, the following cases may occur. The antifreeze 4 is conveyed by the antifreeze pump 15 from the collection pipes 6 and 5 at the lower part of the mixing tank 3 and the water tank 1.
For some reason, a sufficient amount of water will be contained when the water is sucked out from the collecting sections 6 and 5. This phenomenon is likely to occur when the position of the interface 9 is sufficiently lowered, since water droplets and water film spheres contained in the antifreeze 4 are easily sucked out from the collecting units 6 and 5. The water in the antifreeze 4 freezes immediately after being blown out from between the inner pipe 21 and the outer pipe 22 at the antifreeze outlet 12 a, and accumulates on the tip of the inner pipe 21. This icing makes it difficult for the antifreeze 4 having a temperature of 0 ° C. or more to blow out in the form of a cylindrical film, further promotes icing, and the static ice 20 a in contact with the main flow of the water 1 grows. Furthermore, static ice 20b is generated on the inner wall of the mixing tube 3 as described above,
Growing up. As a result of the above phenomenon, ice accumulates on the outlet 12a of the low-temperature antifreeze, and the flow path of the mixing tube 3 is closed.

The static ice 20b on the inner wall of the mixing tube 3 is
The water is partially peeled off and transported to the water tank 2 by the water 1.
Since a part of the static ice 20b on the inner wall of the mixing tube 3 contains the antifreeze 4 having a high specific gravity therein, it is heavier than the water 1 and stays near the interface 9. Stagnant static ice 2
From 0b, the ice grows by the water 1 to become a huge sedimentary ice 20c. As a result, as shown in FIG. 13, the sediment ice 20c blocks the outlet of the mixing tube 3.

In summary, icing at the low-temperature antifreeze liquid outlet 12a may block the outlet of the nozzle 12, the flow path of the mixing pipe 3, and the outlet of the mixing pipe 3. Therefore, the antifreeze outlet 12a
Icing needs to be suppressed.

An object of the present invention is to provide an ice heat storage device capable of improving the reliability of the nozzle of the antifreeze liquid blowing part, thereby suppressing icing at the nozzle opening part and preventing the ice clogging, thereby improving the reliability. With the goal.

[0026]

According to the present invention, there is provided a recovery apparatus for recovering an antifreeze liquid in which water is stored therein and which has a specific gravity larger than water, is insoluble in water, and has a freezing point lower than 0 ° C. at the bottom. A mixing tank formed vertically adjacent to the water tank and having a lower part communicating with the water tank, and a mixing pipe provided at the uppermost part of the mixing pipe and having an inner pipe at the innermost peripheral side. A nozzle having a double structure having a single outlet and a second outlet including an annular outer tube and the inner tube around the nozzle, and an annular or multiple outlets provided on the outermost peripheral side of the nozzle. A water blowing unit, a first antifreeze circulating system that collects the antifreeze stored in the recovery unit, cools the collected antifreeze to 0 ° C. or lower by a refrigerator, and flows out of the first outlet of the nozzle into the mixing pipe; Temperature higher than 0 ° C recovered from the recovery unit A second antifreeze circulating system for causing the antifreeze liquid to flow out of the second outlet of the nozzle into the mixing pipe, and a low-temperature water circulating system for discharging water taken from the water tank into the mixing pipe from the water blowing unit. An ice heat storage device provided with the inner tube, wherein the inner tube has a tip located inwardly along an axial direction from a tip of the outer tube.

According to a second aspect of the present invention, there is provided the ice heat storage device according to the first aspect, further comprising an ice storage tank provided in communication with an upper portion of the water tank, for storing ice and water flowing from the water tank. The low-temperature water circulation system is an ice heat storage device that allows water taken from the ice storage tank to flow out of the water outlet into the mixing pipe instead of taking water from the water tank.

Further, the invention according to claim 3 is characterized in that water is stored inside, and a recovery portion is formed at the bottom for recovering an antifreeze having a specific gravity larger than water, being insoluble in water and having a freezing point lower than 0 ° C., And a water tank formed with a transport pipe for transporting ice and water at the upper part, an ice storage tank for storing ice and water transported by the transport pipe, and a vertically provided adjacent to the water tank and the lower part of the water tank A communicating mixing pipe, a first outlet provided at the uppermost portion of the mixing pipe and comprising an inner pipe on the innermost peripheral side, and a second outlet comprising an annular outer pipe and the inner pipe surrounding the first outlet; A nozzle having a double structure, a water blowing section provided on the outermost peripheral side of the nozzle and having an annular or a large number of blowing ports, and collecting the antifreeze liquid stored in the collecting section and lowering it to 0 ° C. or lower by a refrigerator. Cool it down and let it be the first outlet of the nozzle A first antifreeze circulating system that flows out into the mixing tube, and a second antifreeze circulating system that causes the antifreeze having a temperature higher than 0 ° C. recovered from the recovery unit to flow out of the second outlet of the nozzle into the mixing tube. An ice heat storage device comprising: a low-temperature water circulating system that causes water taken from the ice storage tank to flow out of the water blowing unit into the mixing pipe; wherein the mixing pipe, the recovery unit, the water tank, and the transport pipe Is an ice heat storage device that is sequentially coupled so as to maintain airtightness, and the tip of the inner tube is located more inward in the axial direction than the tip of the outer tube.

According to a fourth aspect of the present invention, there is provided a recovery section in which water is stored and an antifreeze liquid having a specific gravity greater than that of water, being insoluble in water, and having a freezing point lower than 0 ° C. is formed at the bottom. A water tank, a first outlet provided on a side surface of the water tank at a position above the interface between the water and the antifreeze, and an inner pipe on the innermost peripheral side and an annular outer pipe provided therearound. And a double-structured antifreeze blowing nozzle having a second blowing port comprising the inner pipe and the antifreeze stored in the recovery section, and cooled by a refrigerator to 0 ° C. or lower to cool the antifreeze liquid blowing nozzle. A first antifreeze circulating system that flows out of the first outlet into the water tank, and an antifreeze having a temperature higher than 0 ° C. collected from the recovery unit is injected into the water tank through a second outlet of the antifreeze outlet nozzle. Second antifreeze to be drained A ice heat storage apparatus that includes a ring system, as the inner tube is ice heat storage device in which the tip is positioned inwardly along the axial direction than the tip of the outer tube.

Further, the invention corresponding to claim 5 is the ice heat storage device according to claim 4, wherein the ice storage tank is provided in communication with an upper part of the water tank, and stores ice and water flowing from the water tank. A low-temperature water blowing nozzle provided on a side portion of the water tank so as to be located below the antifreeze liquid nozzle and above the recovery section, and the water taken from the ice storage tank is sent from the low-temperature water blowing nozzle through the low-temperature water blowing nozzle. This is an ice heat storage device provided with a low-temperature water circulation system that flows out into a water tank.

According to a sixth aspect of the present invention, there is provided a recovery portion for storing water therein, and for recovering an antifreeze having a specific gravity larger than water, being insoluble in water, and having a freezing point lower than 0 ° C. at the bottom. A water tank, a mixing pipe provided vertically adjacent to the water tank and having a lower part communicating with the water tank, and a first outlet provided at an uppermost part of the mixing pipe and having an inner pipe at an innermost peripheral side thereof And a nozzle having a double structure having a second outlet formed of an annular outer tube and the inner tube around the nozzle, a water outlet having an annular or multiple outlets on the outermost peripheral side of the nozzle, A first antifreeze circulating system that collects the antifreeze stored in the recovery unit, cools the same to 0 ° C. or lower by a refrigerator, and flows out of the first outlet of the nozzle into the mixing pipe; Antifreeze at a temperature higher than 0 ° C An ice heat storage system comprising: a second antifreeze circulating system for flowing out of a chimney from a second blowing port into the mixing tube; and a low-temperature water circulating system for flowing water taken from the water tank into the mixing tube from the water blowing unit. An ice heat storage device, wherein a tip of the inner pipe and a tip of the outer pipe are each formed in a tapered shape, and a flow path between the inner pipe and the outer pipe is tapered. .

Further, the invention according to claim 7 is the ice heat storage device according to claim 6, further comprising an ice storage tank provided in communication with an upper portion of the water tank, for storing ice and water flowing from the water tank. The low-temperature water circulation system is an ice heat storage device that allows water taken from the ice storage tank to flow out of the water outlet into the mixing pipe instead of taking water from the water tank.

The invention according to claim 8 is characterized in that water is stored inside, and a collecting part is formed at the bottom for collecting an antifreeze having a specific gravity larger than water, being insoluble in water and having a freezing point lower than 0 ° C., And a water tank formed with a transport pipe for transporting ice and water at the upper part, an ice storage tank for storing ice and water transported by the transport pipe, and a vertically provided adjacent to the water tank and the lower part of the water tank A communicating mixing tube, a first outlet provided at the uppermost portion of the mixing tube and comprising an inner tube on the innermost side, and a second outlet comprising an annular outer tube and the inner tube around the first outlet; A nozzle having a double structure, a water outlet having an annular or a number of outlets on the outermost peripheral side of the nozzle, and recovering the antifreeze stored in the recovery unit, and cooling it to 0 ° C. or lower by a refrigerator. From the first outlet of the nozzle. A first antifreeze circulating system for flowing out into the pipe, a second antifreeze circulating system for flowing out the antifreeze having a temperature higher than 0 ° C. recovered from the recovery unit from the second outlet of the nozzle into the mixing pipe, An ice heat storage device comprising: a low-temperature water circulation system configured to cause water taken from a lower portion of the ice storage tank to flow out of the water blowing unit into the mixing pipe.
The mixing pipe, the recovery unit, the water tank and the transport pipe are sequentially connected so as to maintain airtightness, a tip of the inner pipe and a tip of the outer pipe are each formed in a tapered shape, and the inner pipe and the This is an ice heat storage device in which the flow path between the outer tube and the outer tube is tapered.

According to a ninth aspect of the present invention, in the ice heat storage device according to any one of the first to third aspects, the tip of the inner tube and the tip of the outer tube each have a tapered shape. And the flow path between the inner pipe and the outer pipe is tapered.

According to a tenth aspect of the present invention, in the ice heat storage device according to any one of the first to ninth aspects, the flow rate of the antifreeze flowing out from the first outlet is as follows: The ice heat storage device is in a range of 0.5 to 2 times the flow rate of the antifreeze discharged from the second outlet.

Further, an invention according to claim 11 is the ice heat storage device according to any one of claims 1 to 10, wherein the space between the inner tube and the outer tube is:
It is an ice heat storage device having a volume small enough to maintain 0.02 kgf / cm ² gauge pressure or more. (Action) Therefore,
According to the invention corresponding to claim 1, by taking the above means, the tip of the inner tube is located more inward in the axial direction than the tip of the outer tube. The high-temperature antifreeze does not bend and flow inside the inner tube immediately after blowing out, so that entrainment into the inner tube is suppressed, and at the same time, zero
Antifreeze at a temperature higher than ℃ warms the lower end of the inner tube and keeps the lower end of the inner tube away from the water, preventing the entrainment of water and the growth of static ice that has landed on the tip of the nozzle. Icing is prevented to prevent the ice from being clogged, thereby improving reliability.

According to a second aspect of the present invention, there is provided an ice storage tank for storing ice and water flowing in from the upper part of the water tank, and the low-temperature water circulating system puts the water taken from the ice storage tank into the mixing pipe from the water blowing part. Since it flows out, in addition to the same operation as the operation corresponding to claim 1, when storing ice, ice is dropped from the upper part of the water tank to the ice storage tank, and the ice is compressed by gravity to increase the ice filling rate, As a result, the amount of stored cold energy can be improved.

Further, according to the third aspect of the present invention, the mixing pipe, the recovery section, the water tank and the transport pipe are sequentially connected so as to maintain airtightness, and the inner pipe has a tip that is more axial than the tip of the outer pipe. Is located inward along, so that in addition to the action corresponding to claim 1, since the space from the water tank to the ice storage tank is in a sealed state, even if the distance is large,
Ice can be transported to a desired place while maintaining a constant amount of cold.

According to a fourth aspect of the present invention, the antifreeze is allowed to flow in from the side surface of the water tank, and the tip of the inner tube for allowing the antifreeze to flow is more axially inward than the tip of the outer tube. Since it is located, the height of the whole device can be reduced in addition to the same operation as the operation corresponding to claim 1.

Further, the invention according to claim 5 has an ice storage tank for storing ice and water flowing in from the upper part of the water tank, and the low-temperature water circulating system uses the low-temperature water blowing nozzle to supply the water taken from the ice storage tank to the water tank. Since it flows out into the inside, the action corresponding to claim 2 and the action corresponding to claim 4 can be achieved.

Further, in the invention corresponding to claim 6, the tip of the inner tube and the tip of the outer tube are each formed to have a tapered shape, and the flow path between the inner tube and the outer tube is formed to be tapered. Therefore, by squeezing the tip of the inner tube to make the inner tube a contraction tube,
The freezing of the antifreeze liquid at 0 ° C or lower can be eliminated without any fluctuation, and the flow path between the inner pipe and the outer pipe has a tapered tip, so that the antifreeze liquid at a temperature higher than 0 ° C can be shaken. Movement can be prevented, so that the antifreeze liquid containing water, at a temperature higher than 0 ° C, is prevented from getting inside the inner tube, and icing of the nozzle opening is suppressed to prevent ice clogging. Can be improved.

According to a seventh aspect of the present invention, there is provided an ice storage tank for storing ice and water flowing in from the upper part of the water tank, and the low-temperature water circulating system mixes water taken from the lower part of the ice storage tank from the water blowing part. Since the water is discharged into the pipe, in addition to the function corresponding to the sixth aspect, when storing ice, ice is dropped from the upper part of the water tank into the ice storage tank, and the ice is compressed by gravity to reduce the ice filling rate. Therefore, the amount of stored cold energy can be improved.

Further, in the invention according to claim 8, the tip of the inner tube and the tip of the outer tube are each formed into a tapered shape, and the flow path between the inner tube and the outer tube is formed to be tapered. Since the mixing pipe, the collecting section, the water tank and the transport pipe are sequentially connected so as to maintain airtightness, in addition to the action similar to the action corresponding to claim 6, the space from the water tank to the ice storage tank is in a sealed state. Therefore, even if the distance is large, the ice can be transported to a desired place while maintaining a constant amount of cold.

According to a ninth aspect of the present invention, the tip of the inner tube and the tip of the outer tube are each formed to have a tapered shape, and the flow path between the inner tube and the outer tube is formed to be tapered. Therefore, in addition to the same operation as the one according to any one of claims 1 to 3, by squeezing the tip of the inner tube to make the inner tube a contraction tube, the fluctuation of the descending flow of the antifreeze liquid at 0 ° C. or less is suppressed. It can be moved down without movement, and the flow path between the inner pipe and the outer pipe has a tapered tip so that the antifreeze at a temperature higher than 0 ° C. can be prevented from oscillating. Entrainment of the antifreeze at a temperature higher than ℃ into the inner tube is suppressed, icing of the nozzle opening can be suppressed, and the ice clogging can be prevented.

Further, the invention according to claim 10 is characterized in that the flow rate of the antifreeze flowing out of the first outlet is 0.1 times lower than the flow rate of the antifreeze flowing out of the second outlet.
Since it is within the range of 5 to 2 times, in addition to the action corresponding to any one of claims 1 to 9, the generation of shearing force between the two types of antifreeze flows is suppressed, The antifreeze film for preventing the freezing does not disturb, and the tip of the inner tube is well protected, and the icing of the nozzle of the antifreeze can be suppressed.

The invention corresponding to claim 11 has a small volume between the inner pipe and the outer pipe so as to maintain 0.02 kgf / cm ² gauge pressure or more. In addition to the action corresponding to any one of the above, the degree of rapid expansion of the flow path is sufficiently reduced, and the pressure of the antifreeze solution for preventing freezing is ensured. The antifreeze film effectively protects the tip of the inner tube and can prevent icing of the antifreeze nozzle.

[0047]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a schematic diagram showing a configuration of an ice heat storage device according to a first embodiment of the present invention. FIGS. 2 and 3 show nozzles applied to the ice heat storage device. FIGS. 13 to 18 are cross-sectional views and schematic views showing the configuration in an enlarged manner.
The same parts as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted. Here, only different parts will be described.

That is, the ice heat storage device according to the present embodiment aims to prevent icing at the nozzle opening by improving the nozzle. Specifically, as shown in FIGS. Instead of the inner tube 21 in the nozzle having a double structure, the inner tube 21 is provided with an inner tube 31 having an opening recessed from the outer tube 22.

The antifreeze at 0 ° C. or higher between the inner pipe 31 and the outer pipe 22 is supplied to the valve 16b and the flow meter 17c by a pipe 14e branched from between the pump 15 and the valve 16a.
Is supplied to the outer tube 22 via the.

Next, the operation of such an ice heat storage device will be described. Now, assuming that the ice making operation is being performed, the antifreeze 4 cooled to below freezing by the refrigerator 13 is discharged from the outlet 1.
The water flows out of the mixing pipe 3 from the inside 2 a and is mixed with the water 1.
At this time, the antifreezing liquid 4 for preventing freezing having a temperature slightly higher than 0 ° C. is flowing out from the outlet 12c through the pipe 14e by the pump 15 so as to surround the antifreezing liquid 4 having a lower temperature, and relatively around it. Water 1 having a high blowing speed flows out of the blowing port 12b.

At this time, since the tip of the inner tube 31 of the nozzle 12 is recessed in the direction opposite to the opening direction from the tip of the outer tube 21, the antifreeze 4 containing water and having a temperature higher than 0 ° C. In the inner tube 31 is suppressed.
At the same time, the antifreeze 4 having a temperature higher than 0 ° C. warms the lower end surface of the inner tube 31 or moves the lower end of the inner tube 31 away from the water 1 to prevent the water 1 from being caught and the static ice 20a from growing. Therefore, icing of the low-temperature antifreeze liquid outlet 12a can be suppressed.

In the same manner as described above, the low-temperature antifreeze flowing out of the outlet 12a flows down in the water together with the antifreeze 4 flowing out of the outlet 12c and exchanges heat with the surrounding water 1 while being exchanged with the surrounding water 1. Flow down vertically to cool the water 1 and cause ice 20 to precipitate.

In the same manner as described above, the flow of the water 1 containing the ice 20 descending to the lower part of the mixing tube 3 is converted from the vertical direction to the horizontal direction by the connecting portion 8 with the water tank 2, and is smoothly guided to the water tank 2. Then, the ice 20 in the sherbet state is separated from the flow of the water 1 by the wire net 11 and is stored in a form that widely covers the water surface.

As described above, according to the first embodiment, the tip of the inner pipe 31 of the nozzle 12 having the double pipe structure is
Since the shape of the antifreeze 4 containing water is higher than 0 ° C., the antifreeze 4 having a temperature higher than 0 ° C. can be prevented from getting inside the inner tube 31 because of the shape of the antifreeze 4 containing water.

At the same time, the antifreeze 4 having a temperature higher than 0 ° C.
Can be used to warm the lower end of the inner tube 31 or
Separated from water, water 1 entrapped and static ice 20a
Prevent growth and. Therefore, low-temperature antifreeze outlet 1
The icing of 2a can be suppressed. (Second Embodiment) Next, an ice heat storage device according to a second embodiment of the present invention will be described.

FIG. 4 is a schematic diagram showing the configuration of the ice heat storage device. The same parts as those in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof will be omitted. Only different parts will be described here.

That is, the ice heat storage device according to the present embodiment is provided in an ice storage tank having a relatively deep water depth.
To increase the amount of stored cold energy per unit volume. Specifically, as shown in FIG. 4, a water tank (32) communicating with the water tank 2 at an upper portion is provided. Ice storage tank 3 for storing sherbet-like ice 20 moved from 2
Let it be 2. The sherbet-like ice 20 accumulates in the water tank 2, and the ice 20 forms a wall 33 between the water tank 2 and the ice storage tank 32.
After being stored to a higher position, it passes through the wall 33, passes through the flow path 34 between the water tank 2 and the ice storage tank 32, and
To fall. At this time, a part of the water 1 may be moved to the ice storage tank 32. Then, the ice 20 is stored in the ice storage tank 32. Under the ice 20 in the ice storage tank 32, there is water 1 formed by melting during the ice melting operation. This water 1 is stored in an ice storage tank 3
Water is taken from the intake port of No. 2 and the mixing pipe 3 is
From the top of the head. Then, the double tube nozzle 12 is shaped such that the tip of the inner tube 31 is retracted from the tip of the outer tube 22 in the direction opposite to the opening direction.

In the ice storage tank 32, the sherbet-like ice 20 to be stored is poured one after another from above and compressed by gravity, so that the ice filling rate is increased. As a result, the actual amount of stored ice with respect to the volume of the ice storage part and the site area, that is,
The amount of stored cold energy can be increased.

As described above, according to the second embodiment, in addition to the effect of the first embodiment, by storing sherbet-like ice 20 in the ice storage tank 32, the volume of the ice storage portion and The amount of cold stored for the area can be increased. (Third Embodiment) Next, an ice heat storage device according to a third embodiment of the present invention will be described.

FIG. 5 is a schematic view showing the configuration of the ice heat storage device. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. Only different parts will be described here. That is, the ice heat storage device according to the present embodiment is intended to increase the amount of stored cold heat per equipment volume by filling a water tank having a relatively shallow depth with a sherbet-like ice, and is specifically shown in FIG. In this way, as shown in Japanese Patent Application No. 6-19633, the structure is provided with the transfer pipe 41.

More specifically, a transport pipe 41 for transporting a two-phase flow of water 1 and ice 20 to a predetermined location is connected to the downstream side of the water tank 2 and transported through the transport pipe 41 to flow down from the opening end. An ice heat storage tank (ice storage tank) 42 for storing a two-phase flow of water 1 and ice 20 is provided. Water is taken from the water inlet of the ice heat storage water tank 42, and is made to flow into the mixing pipe 3 from the top by the transport pump 18. In this figure, the antifreeze liquid collecting section below the mixing pipe 3 and the antifreeze liquid collecting section below the water tank 1 are integrated, but the antifreeze liquid 4 collected in the antifreezing liquid collecting section 6 is pumped by the pump 15 to the top of the mixing pipe 3. More inflow. The mixing pipe 3, the recovery section 6, the water tank 2, and the transport pipe 41 are closed and communicate with each other. Then, the nozzle 12 having the double pipe structure is shaped such that the tip of the inner pipe 31 is retracted in the direction opposite to the opening direction from the tip of the outer pipe 22.

Since the space from the water tank 2 to the ice heat storage water tank 42 is in a sealed state, even if the distance between the ice making part 43 composed of the water tank 2 and the mixing tank 3 and the ice heat storage water tank 42 is large, The ice 20 can be transported to a target location while maintaining a certain amount of cold energy. (Fourth Embodiment) Next, an ice heat storage device according to a fourth embodiment of the present invention will be described.

FIG. 6 is a schematic view showing the configuration of the ice heat storage device. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. Only different parts will be described here. That is, the ice heat storage device according to the present embodiment
This is a modification of the embodiment, and specifically, has a structure in which the antifreeze 4 is blown out in the horizontal direction as shown in FIG.

In addition to the structure shown in FIG. 6, as shown in FIG. 7, a pump 18 is arranged so as to take water through a water intake port 10 provided in the upper part of the water tank 2. May be blown out in the horizontal direction from a nozzle provided at the lower part of the water tank 2 through the pipe 14c.

Here, as shown in FIG. 6, a water tank 2 containing water-insoluble and antifreeze 4 and water 2 having a specific gravity greater than that of water.
From inside the antifreeze 4 collected by the pump 15,
After being cooled to a temperature lower than 0 ° C. by the refrigerator 13, the antifreeze circulates through the nozzle 12 having a double structure opened above the interface 9 between the water 2 and the antifreeze 4 to produce fine ice particles. Is configured. The nozzle 12 is horizontal or substantially horizontal.

The nozzle 12 forms a circulating system such that an antifreeze having a temperature lower than 0 ° C. flows through the inner pipe 31 and an antifreeze having a temperature higher than 0 ° C. flows between the inner pipe 31 and the outer pipe 22. Then, the tip of the inner tube 31 is connected to the outer tube 22
From the tip of the opening in the direction opposite to the opening direction.

As described above, the same effects as those of the first embodiment can be obtained, and the structure can be simplified. Further, although the device installation area may be increased, it is suitable when the height of the entire device is to be reduced. (Fifth Embodiment) Next, an ice heat storage device according to a fifth embodiment of the present invention will be described.

FIG. 8 is a schematic diagram showing the configuration of this ice heat storage device. The same parts as those in FIGS. 1, 4, 6, and 7 are denoted by the same reference numerals, and detailed description thereof is omitted. Only the different parts will be described.

That is, the ice heat storage device according to the present embodiment is a modification of the second embodiment, and specifically uses the horizontal nozzle 12 shown in FIG. 7 as shown in FIG. The apparatus has a configuration in which the ice storage tank 32 of FIG. 4 is provided.

More specifically, a pump 18 is arranged so as to take water through the water intake port 10 provided in the ice storage tank 32, and the low-temperature water sucked by the pump 18 is fed horizontally through a pipe 14c from a nozzle provided at the lower part of the water tank 2. It blows in the direction.

With such a configuration, the same effects as those of the second embodiment can be obtained, and the configuration can be simplified. Further, although the device installation area may be increased, it is suitable when the height of the entire device is to be reduced. (Sixth Embodiment) Next, an ice heat storage device according to a sixth embodiment of the present invention will be described.

FIG. 9 is an enlarged sectional view showing a tip configuration of a nozzle applied to the ice heat storage device.
The same parts as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted. Here, only different parts will be described.

That is, the ice heat storage device according to the present embodiment is a modification of the first embodiment, and specifically, as shown in FIG. The inner pipe 31 and the outer pipe 22 have a double pipe structure in which the leading ends of the inner pipe 31 and the outer pipe 22 are tapered.

More specifically, in an apparatus for blowing the antifreeze 4 downward in the direction of gravity, the end of the inner surface of the inner tube 31 is tapered in the opening direction, and the flow path between the inner tube 31 and the outer tube 22 is opened in the opening direction. Make it tapered. The blow-off flow separates from the inner wall just before the blow-out, and the cross-sectional area of the flow path becomes small, and the flow tends to be reduced. By squeezing the tip to make the inner tube 31 a contraction tube, the swing of the descending flow of the antifreeze 4 at 0 ° C. or lower as shown in FIG. 10 is eliminated, and as shown in FIG.
Let the descending flow descend directly. At the same time, if the flow path between the inner tube 31 and the outer tube 22 is also tapered in the opening direction, the swing of the antifreeze 4 having a temperature higher than 0 ° C. can be prevented. Therefore, the antifreeze 4 containing water at a temperature higher than 0 ° C. is prevented from being caught in the inner tube 31, and icing of the antifreeze outlet 12 a can be suppressed.

As described above, according to the sixth embodiment, since the tip of the inner pipe 31 and the tip of the outer pipe 22 are each formed to have a tapered shape, it is possible to reduce the cross-sectional area of the flow of the blown flow. By narrowing the inner tube tip to make the inner tube a contraction tube more or less, it is possible to eliminate the fluctuation of the descending flow of the antifreeze 4 at 0 ° C. or less and to directly descend the same. The flow path between the outer tube 22 and the outer tube 22 is also tapered at 0 ° C.
In order to prevent the antifreeze 4 having a higher temperature from swinging, the antifreeze 4 containing water and having a temperature higher than 0 ° C. is prevented from being caught in the inner tube 31 and icing of the opening of the nozzle 12 is suppressed. As a result, the ice blockage can be prevented, and the reliability can be improved. (Seventh Embodiment) Next, an ice heat storage device according to a seventh embodiment of the present invention will be described with reference to FIGS.

That is, the ice heat storage device according to the present embodiment is a combination of the second and sixth embodiments, and more specifically, an apparatus having an ice storage tank shown in FIG.
Is applied.

With such a configuration, the effects of the second and sixth embodiments can be simultaneously obtained. (Eighth Embodiment) Next, an ice heat storage device according to an eighth embodiment of the present invention will be described with reference to FIGS.

That is, the ice heat storage device according to the present embodiment is a combination of the third and sixth embodiments, and more specifically, the transfer pipe 41 and the ice heat storage tank 42 shown in FIG. The apparatus has the nozzle 12 of the contraction tube shown in FIG.

With such a configuration, the effects of the third and sixth embodiments can be simultaneously obtained. (Ninth Embodiment) Next, an ice heat storage device according to a ninth embodiment of the present invention will be described.

FIG. 12 is an enlarged sectional view showing a tip structure of a nozzle applied to the ice heat storage device.
The same parts as those in FIG. 9 are denoted by the same reference numerals, and detailed description thereof will be omitted. Only different parts will be described here.

That is, the ice heat storage device according to the present embodiment is a combination of the first and sixth embodiments, and specifically, as shown in FIG. There is provided a nozzle formed by combining a nozzle having a tube structure with the nozzle of a contraction tube shown in FIG. 9, and this nozzle is applied to the apparatus shown in FIG.

More specifically, the nozzle is formed such that the tip of the inner tube 31 is recessed from the tip of the outer tube 22 in the direction opposite to the opening direction, and the end of the inner surface of the inner tube 31 is tapered in the opening direction. In addition, a flow path between the inner pipe 31 and the outer pipe 22 is formed to have a tapered shape in the opening direction.

With such a configuration, the effects of the first and sixth embodiments can be simultaneously obtained. (Tenth Embodiment) Next, an ice heat storage device according to a tenth embodiment of the present invention will be described with reference to FIGS.

That is, the ice heat storage device according to the present embodiment is for optimizing the first embodiment, and specifically limits the flow rate of the antifreeze. Specifically, the flow rate of the low-temperature antifreeze discharged from the inner pipe 31 is set to be not less than １ ／ times and not more than twice the flow rate of the antifreeze 4 for preventing freezing discharged from the flow path between the inner pipe 31 and the outer pipe 22. .

Therefore, the flow rate ratio of the two types of antifreeze is set to 0.5
By setting it within the range of ~ 2, the shearing force acting between the flows of the two types of antifreeze 4 can be suppressed so that the flows are not disturbed. Further, since the film of the antifreezing liquid 4 for preventing freezing effectively protects the tip of the inner tube 21, it is possible to suppress icing of the antifreezing liquid outlet 12a. (Eleventh Embodiment) Next, an ice heat storage device according to an eleventh embodiment of the present invention will be described with reference to FIGS.

That is, the ice heat storage device according to the present embodiment optimizes the first embodiment. Specifically, the pressure of the antifreeze 4 is 0.02 kgf / cm ² gauge pressure or less. The structure is such that the volume of the flow path between the inner tube 31 and the outer tube 22 is reduced to such an extent that does not occur.

As described above, the degree of rapid expansion of the flow path is sufficiently reduced, and the pressure of the antifreeze 4 for preventing freezing is ensured. Protects the tip of the inner tube 31, so that icing of the outlet 12 a at the tip of the inner tube 31 can be suppressed. (Other Embodiments) In the first embodiment,
The case where one mixing pipe 3 is provided for one water tank 2 has been described. However, the present invention is not limited to this, and the present invention may be similarly implemented by providing a configuration in which a plurality of mixing pipes 3 are provided for one water tank 2. The same effect can be obtained.

In the first to eleventh embodiments, the structure of the antifreeze 4 is not particularly described. However, for example, a liquid composed of two elements of fluorine and carbon (for example, “trade name: Florinert”) Even if is used, the present invention can be implemented in the same manner and the same effect can be obtained.

Further, in the second or fifth embodiment, the structure in which the technique of dispersing and dropping the ice 20 to the ice storage tank 32 so as not to concentrate on one place may be added. Similar effects can be obtained by implementing the invention in the same manner.

Further, in the second or fifth embodiment, a revolving door is provided on the wall 33 so that the ice
If 0 is stored in the water tank 2, the present invention can be implemented in the same manner and the same effect can be obtained by adding a technique such as rotating the revolving door to rotate the ice 20 from the water tank 2 to the ice storage tank 32. be able to.

Further, in the second or fifth embodiment, as described above, the technique of simultaneously transferring the ice by the revolving door and the technique of dispersing the falling position of the ice into the ice storage tank 32 are added. However, the present invention can be implemented in the same manner to obtain the same effect.

In any of the ninth to eleventh embodiments, the ice storage tank 32 according to the second embodiment may be provided in addition to the above-described configuration. Alternatively, in any of the ninth to eleventh embodiments, the transport pipe 41 and the ice heat storage tank 42 according to the third embodiment may be provided in addition to the above-described configuration.

Further, when the nozzle having the shape according to the ninth embodiment is applied to any of the devices according to the fourth to eighth embodiments, the effects of the nozzle according to the ninth embodiment can be obtained. The effect of the applied device can be obtained at the same time.

Further, the flow velocity condition of the tenth embodiment can be combined with any of the first to ninth embodiments to obtain the effect of the tenth embodiment and the effect of the combined embodiment. The effect can be obtained at the same time.

Further, the condition of the volume and the pressure of the eleventh embodiment is not limited to the effect of the eleventh embodiment, even if combined with any of the first to tenth embodiments. And the effect of the form (1) can be obtained at the same time. In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[0096]

As described above, according to the first aspect of the present invention, since the tip of the inner tube is located more inward along the axial direction than the tip of the outer tube, the temperature is lower than 0 ° C. containing water. High temperature antifreeze is prevented from getting inside the inner tube,
Antifreeze at a higher temperature warms the lower end of the inner tube or moves the lower end of the inner tube away from the water, preventing water entrapment and static ice growth, thereby suppressing icing at the nozzle opening. It is possible to provide an ice heat storage device capable of preventing the ice clogging and improving the reliability.

According to the second aspect of the present invention, an ice storage tank for storing ice and water flowing in from the upper part of the water tank is provided, and the low-temperature water circulation system transfers the water taken from the ice storage tank to the mixing pipe from the water blowing part. Because it flows out, in addition to the same effect as in claim 1,
When storing ice, drop ice from the top of the water tank into the ice storage tank,
It is possible to provide an ice heat storage device capable of increasing the ice filling rate by compressing the ice by gravity, thereby improving the amount of stored cold energy.

Further, according to the third aspect of the present invention, the mixing pipe, the recovery section, the water tank, and the transport pipe are sequentially connected so as to maintain airtightness. Is located inward along, so that in addition to the same effect as in claim 1, since the space from the water tank to the ice storage tank is sealed, a constant amount of cold heat is maintained even if the distance is large. An ice heat storage device capable of transporting ice to a desired place in a state can be provided.

According to the fourth aspect of the present invention, the tip of the inner pipe for allowing the antifreeze to flow from the side surface of the water tank and for the flow of the antifreeze to the inside is more axially inward than the tip of the outer pipe. Since it is located, in addition to the same effect as the first aspect, it is possible to provide an ice heat storage device capable of reducing the height of the entire device.

Further, according to the fifth aspect of the present invention, there is provided an ice storage tank for storing ice and water flowing from the upper part of the water tank, and the low-temperature water circulating system uses the low-temperature water blowing nozzle to supply the water taken from the ice storage tank to the water tank. Since it flows into the inside, it is possible to provide an ice heat storage device having an effect obtained by combining the effects of the second and fourth aspects.

Further, according to the invention of claim 6, the tip of the inner tube and the tip of the outer tube are each formed to have a tapered shape, and the flow path between the inner tube and the outer tube is formed to be tapered. Therefore, in accordance with the reduction of the cross-sectional area of the flow of the blowout flow, or by narrowing the tip of the inner tube more than that, the inner tube is made to be a contraction tube, thereby eliminating the fluctuation of the descending flow of the antifreeze liquid at 0 ° C or less. It can be lowered directly, and the flow path between the inner pipe and the outer pipe has a tapered tip so that the antifreeze liquid having a temperature higher than 0 ° C. can be prevented from oscillating. It is possible to provide an ice heat storage device capable of suppressing the entrainment of the antifreeze at the temperature inside the inner tube, suppressing icing at the nozzle opening, preventing the ice from being clogged, and improving reliability.

According to the seventh aspect of the present invention, an ice storage tank is provided for storing ice and water flowing in from the upper part of the water tank, and the low-temperature water circulating system supplies the water taken from the ice storage tank into the mixing pipe from the water blowing part. Since it flows out, in addition to the same operation as the operation according to claim 6, when storing ice, ice is dropped from the upper part of the water tank to the ice storage tank, and the ice is compressed by gravity to increase the ice filling rate, As a result, the amount of stored cold energy can be improved.

Further, the invention according to claim 8 is characterized in that the tip of the inner pipe and the tip of the outer pipe are each formed into a tapered shape, and the mixing pipe, the collecting section, the water tank and the transport pipe are successively kept airtight. Since it is connected, in addition to the same effect as in claim 6, since the space from the water tank to the ice storage tank is in a sealed state, even if the distance is large, the ice is kept in a state of maintaining a constant amount of cold heat, and An ice heat storage device that can be transported to a place can be provided.

According to the ninth aspect of the present invention, the distal end of the inner tube and the distal end of the outer tube are each formed into a tapered shape, so that in addition to the same effects as in any of the first to third aspects, By narrowing the tip of the inner tube to reduce the cross-sectional area of the flow channel or more, and making the inner tube a contraction tube, 0 ° C
The following flow of antifreeze liquid can be made to descend directly without fluctuations, and the flow path between the inner pipe and the outer pipe also has a tapered tip so that the fluctuation of antifreeze liquid at a temperature higher than 0 ° C can be prevented. Since this can be prevented, it is possible to provide an ice heat storage device that can prevent the antifreeze liquid containing water having a temperature higher than 0 ° C. from being caught in the inner tube, and can suppress ice formation at the nozzle opening to prevent ice clogging.

Further, according to the tenth aspect of the present invention, the first
The flow rate of the antifreeze flowing out of the
0.5 times the flow rate of antifreeze flowing out of the
Since it is within the range of up to twice, in addition to the same effect as in any one of claims 1 to 9, the generation of shearing force between the two kinds of antifreeze flows is suppressed, and the antifreeze film for preventing freezing is formed. However, the present invention can provide an ice heat storage device capable of effectively protecting the tip of the inner tube and suppressing icing of the antifreeze liquid at the nozzle opening.

According to the eleventh aspect of the present invention, the space between the inner pipe and the outer pipe has a volume small enough to maintain 0.02 kgf / cm ² gauge pressure or more. In addition to the same effects as in any one of 10 above, the degree of rapid expansion of the flow path is sufficiently reduced, and the pressure of antifreeze for preventing freezing is secured, so that the generation of bubbles is prevented, and the film of antifreeze for preventing freezing is formed. It is possible to provide an ice heat storage device capable of effectively protecting the tip of the inner tube and suppressing icing of the nozzle opening of the antifreeze liquid.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of an ice heat storage device according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a tip structure of a nozzle according to the embodiment;

FIG. 3 is a schematic diagram showing a nozzle and its peripheral configuration according to the embodiment;

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

FIG. 5 is a schematic diagram illustrating a configuration of an ice heat storage device according to a third embodiment of the present invention.

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

FIG. 7 is a schematic diagram showing a modified configuration of the ice heat storage device in the embodiment.

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

FIG. 9 is an enlarged sectional view showing a tip structure of a nozzle applied to an ice heat storage device according to a sixth embodiment of the present invention.

FIG. 10 is a schematic diagram for explaining the operation in the embodiment.

FIG. 11 is a schematic view for explaining the operation in the embodiment.

FIG. 12 is an enlarged sectional view showing a tip structure of a nozzle applied to an ice heat storage device according to a ninth embodiment of the present invention.

FIG. 13 is a schematic diagram showing a configuration of a conventional ice heat storage device.

FIG. 14 is a schematic view for explaining a problem of the conventional ice heat storage device.

FIG. 15 is a cross-sectional view showing a nozzle applied to a conventional ice heat storage device and its peripheral configuration.

FIG. 16 is an enlarged sectional view showing a tip structure of a nozzle applied to a conventional ice heat storage device.

FIG. 17 is a cross-sectional view showing a nozzle applied to a conventional ice heat storage device and its peripheral configuration.

FIG. 18 is a cross-sectional view showing a nozzle applied to a conventional ice heat storage device and its peripheral configuration.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Water 2 ... Water tank 3 ... Mixing tube 4 ... Antifreeze 5, 6 ... Recovery part 7 ... Pipe line 8 ... Connection part 9 ... Interface 10 ... Water intake part 11 ... Wire mesh 12 ... Nozzle 12a ... Mouth 12b Water outlet 12c Antifreeze outlet (exceeding 0 ° C.) 13 Refrigerator 14a-14e Pipe 15 Pump 16a, 16b Valve 17a-17c Flow meter 18 Pump 20 Ice 20a, 20b Static ice 20c ... Deposited ice 22 ... Outer pipe 31 ... Inner pipe 32 ... Ice storage tank 33 ... Wall 34 ... Flow path 41 ... Transport pipe 42 ... Ice heat storage water tank 43 ... Ice making part

Continuing from the front page (72) Inventor Hitoshi Yoshino 2-4-4 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside the Toshiba Keihin Works Co., Ltd. (72) Inventor Kiyohiko Kitagawa 2--4, Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Stock Inside Toshiba Keihin Office

Claims (11)

[Claims] 1. A water tank in which water is stored, and a recovery part for recovering an antifreeze having a specific gravity higher than that of water, a water-insoluble property and a freezing point lower than 0 ° C. is formed in a bottom part, and a water tank adjacent to the water tank. A mixing pipe provided vertically and having a lower part communicating with the water tank, a first outlet provided at the uppermost part of the mixing pipe and having an inner pipe on the innermost peripheral side, and an annular outer pipe surrounding the first outlet. A nozzle having a double structure having a second outlet formed by the inner pipe, a water outlet provided at the outermost periphery of the nozzle and having an annular or multiple outlets, and an antifreeze liquid stored in the recovery unit. A first antifreeze circulating system for collecting and cooling the mixture to a temperature of 0 ° C. or less by a refrigerator and flowing out from the first outlet of the nozzle into the mixing pipe; The antifreeze from the second outlet of the nozzle An ice heat storage device comprising: a second antifreeze circulating system for flowing out into the mixing tube; and a low-temperature water circulating system for flowing water taken from the water tank into the mixing tube from the water blowing unit. (3) The ice heat storage device, wherein the tip is located more inward in the axial direction than the tip of the outer tube. 2. The ice heat storage device according to claim 1, further comprising: an ice storage tank provided in communication with an upper part of the water tank, for storing ice and water flowing from the water tank. An ice heat storage device, wherein instead of taking water from a water tank, water taken from the ice storage tank flows out from the water blowing section into the mixing pipe. 3. Water is stored inside, and a recovery part is formed at the bottom for recovering an antifreeze having a specific gravity larger than water, which is insoluble, and has a freezing point lower than 0 ° C., and conveys ice and water to the upper part. A water tank having a transfer pipe formed therein, an ice storage tank for storing ice and water transferred by the transfer pipe, a mixing pipe provided vertically adjacent to the water tank and having a lower part communicating with the water tank; A double-structured nozzle provided at the uppermost portion of the pipe and having a first outlet formed of an inner pipe on the innermost side and a second outlet formed of an annular outer pipe and the inner pipe around the first outlet; A water blowing section provided on the outermost peripheral side of the nozzle and having an annular or a large number of blowing ports, and an antifreeze solution stored in the recovery section, collected and cooled by a refrigerator to 0 ° C. or lower, and the first A first air outlet flowing out of the outlet into the mixing pipe. A frozen liquid circulation system, a second antifreeze circulation system for allowing the antifreeze liquid having a temperature higher than 0 ° C. recovered from the recovery section to flow out from the second outlet of the nozzle into the mixing pipe, and water being taken from the ice storage tank. And a low-temperature water circulation system that causes the water to flow out from the water blowing section into the mixing pipe, wherein the mixing pipe, the recovery section, the water tank, and the transport pipe are sequentially sealed so as to maintain airtightness. The ice heat storage device is characterized in that the tip of the inner tube is combined with the tip of the outer tube inward in the axial direction than the tip of the outer tube. 4. A water tank in which water is stored, and a recovery part for recovering an antifreeze having a specific gravity higher than that of water, a water-insoluble property, and a freezing point lower than 0 ° C. is formed at the bottom, and the water in the water tank. A first outlet provided on a side surface at a position above the interface with the antifreeze and an inner tube on the innermost peripheral side, and a second outlet provided on the periphery thereof and comprising an annular outer tube and the inner tube provided therearound. An antifreeze liquid blowing nozzle having a double structure having an air outlet, and collecting the antifreeze liquid stored in the recovery section, cooling the same to 0 ° C. or lower by a refrigerator, and feeding the antifreeze liquid into the water tank through a first air outlet of the antifreeze liquid nozzle. A first antifreeze circulating system for discharging the antifreeze at a temperature higher than 0 ° C. recovered from the recovery unit to a second antifreeze circulating system for discharging the antifreeze into the water tank from a second outlet of the antifreeze blowing nozzle. An ice storage device equipped with An ice heat storage device, wherein the tip of the inner tube is located inward in the axial direction from the tip of the outer tube. 5. The ice heat storage device according to claim 4, wherein said ice heat storage device is provided in communication with an upper portion of said water tank, and stores ice and water flowing from said water tank, said ice storage tank being lower than said antifreeze liquid nozzle and said ice tank. A low-temperature water blowing nozzle provided on a side portion of the water tank so as to be located above the recovery unit; and a low-temperature water circulation system that allows water taken from the ice storage tank to flow out of the low-temperature water blowing nozzle into the water tank. An ice heat storage device comprising: 6. A water tank in which water is stored, and a recovery part for recovering an antifreeze having a specific gravity larger than that of water, a water insolubility and a freezing point lower than 0 ° C. is formed in a bottom part, and a water tank adjacent to the water tank. A mixing pipe provided vertically and communicating the lower part with the water tank; a first outlet provided at the uppermost part of the mixing pipe and having an inner pipe on the innermost peripheral side; and an annular outer pipe surrounding the first outlet. A nozzle having a double structure having a second outlet formed of the inner pipe, a water outlet having an annular or a number of outlets on the outermost peripheral side of the nozzle, and recovering the antifreeze liquid stored in the recovery unit. This is cooled to 0 ° C. or less by a refrigerator, and a first antifreeze circulating system that flows out from the first outlet of the nozzle into the mixing pipe, and an antifreeze having a temperature higher than 0 ° C. collected from the recovery unit is used. The mixing outlet from the second outlet of the nozzle An ice heat storage device comprising: a second antifreeze circulating system for flowing out into a joint pipe; and a low-temperature water circulating system for flowing water taken from the water tank into the mixing pipe from the water blowing unit. An ice heat storage device, wherein a tip and a tip of the outer tube are each formed to have a tapered shape, and a flow path between the inner tube and the outer tube is formed to be tapered. 7. The ice heat storage device according to claim 6, further comprising: an ice storage tank provided in communication with an upper portion of the water tank, for storing ice and water flowing from the water tank. An ice heat storage device, wherein instead of taking water from a water tank, water taken from the ice storage tank flows out from the water blowing section into the mixing pipe. 8. Water is stored inside, and a collecting part is formed at the bottom for collecting an antifreeze having a specific gravity higher than that of water and having a freezing point lower than 0 ° C. which is insoluble and lower than 0 ° C., and conveys ice and water to the upper part. A water tank having a transfer pipe formed therein, an ice storage tank for storing ice and water transferred by the transfer pipe, a mixing pipe provided vertically adjacent to the water tank and having a lower part communicating with the water tank; A double-structured nozzle provided at the uppermost portion of the pipe and having a first outlet formed of an inner pipe on the innermost peripheral side and a second outlet formed of an annular outer pipe and the inner pipe around the first outlet; A water outlet having an annular or a number of outlets on the outermost peripheral side of the nozzle, and an antifreeze stored in the collecting portion, which is cooled to 0 ° C. or lower by a refrigerator, and the first outlet of the nozzle is provided. First antifreeze circulating fluid flowing out into the mixing pipe A ring system, a second antifreeze circulating system for discharging the antifreeze at a temperature higher than 0 ° C. recovered from the recovery part into the mixing pipe from a second outlet of the nozzle, and water taken from a lower part of the ice storage tank. And a low-temperature water circulation system that causes the water to flow out from the water blowing section into the mixing pipe, wherein the mixing pipe, the recovery section, the water tank, and the transport pipe are sequentially sealed so as to maintain airtightness. Ice heat storage, wherein a tip of the inner pipe and a tip of the outer pipe are each formed in a tapered shape, and a flow path between the inner pipe and the outer pipe is formed in a tapered shape. apparatus. 9. The ice heat storage device according to claim 1, wherein a tip of the inner tube and a tip of the outer tube are formed in a tapered shape, respectively, and the inner tube and the outer tube are formed in a tapered shape. An ice heat storage device, wherein a flow path between the outer tube and the outer tube is tapered. 10. The ice heat storage device according to claim 1, wherein the flow rate of the antifreeze flowing out of the first outlet is discharged from the second outlet. An ice heat storage device characterized by being within a range of 0.5 to 2 times the flow rate of the antifreeze. 11. The method according to claim 1, wherein
In the ice thermal storage device described in the paragraph, 0.02 kgf / cm ² is provided between the inner pipe and the outer pipe.
An ice heat storage device having a volume small enough to maintain a gauge pressure or more.