JPH1123117A - Ice heat storage apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ice heat storage apparatus in which it is capable of effectually making ice and of being miniaturized. SOLUTION: The ice heat storage apparatus is adapted such that a cooling medium M insoluble in water is cooled with cooling means 14, and the cooled cooling medium M is injected into an ice making part 1 filled with water W to separate ice particles I, by making use of heat exchange by direct contact between the cooling medium M and the water W. There are provided water nozzle means 4 for injecting the water W into the ice making part 1, and cooling medium nozzle means 9 for injecting the cooling medium M into the ice making part 1. The injecting direction of the water W from the water nozzle means 4 and the injecting direction of the cooling medium M from the cooling medium nozzle means 9 are opposed to each other.

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, and more particularly to an ice heat storage device used for a large-scale district heat supply plant for industrial use and for air conditioning equipment for high-rise buildings for air conditioning. Related to the device.

[0002]

2. Description of the Related Art An air-conditioning system having ice heat storage means can use inexpensive late-night power in order to reduce power demand for cooling, which is concentrated in the daytime, and also reduces the capacity of heat source equipment and the contract power. In recent years, application to relatively large-capacity air conditioning systems such as building air conditioning and district cooling and heating systems is expected. In particular, in recent years, the cooling load in the daytime in summer has rapidly increased, and there is a possibility that the stable supply of electric power may be hindered.

[0003] From such a background, a large number of air conditioners having a heat storage layer have been proposed so far, and some of these proposals have been actually adopted and already operated. In particular, the practical use of an ice heat storage device capable of greatly increasing the heat storage capacity as compared with the conventional water heat storage means is currently in progress.

In this ice heat storage device, sherbet-like ice particles having fluidity are stored in a heat storage tank to store heat, and this is used as a cold heat source for daytime cooling in an air conditioner or the like.
Alternatively, a mixture of ice particles and water generated in the ice making section is directly supplied to an air conditioner or the like and used as a cooling heat source for cooling.

[0005] As a conventional ice heat storage device, for example, those disclosed in US Patent No. 2,996,894, JP-A-5-223291 and the like are known. Each of these is a latent heat storage device for air conditioning, which uses water as a latent heat storage element (first liquid) and is continuously generated, particularly in an ice particle state.
In a refrigerator, a cooling medium (second liquid) is cooled to 0 ° C. or lower, and the cooling medium is jetted into water to be brought into direct contact with water and exchange heat with water to generate ice particles. Device. Here, a non-water-soluble antifreeze is used for the cooling medium (second liquid).

[0006] Such a direct contact type latent heat storage device has a small heat loss and can generate fine ice particles with high efficiency. In addition, since the generated ice particles move by buoyancy or by a water flow, water at 0 ° C. and the antifreeze liquid are always in contact with each other, whereby the ice making efficiency can be improved.

[0007]

However, the conventional latent heat storage device described above has a problem that it is difficult to efficiently make ice in a stable state, and it is also difficult to transport the iced ice particles to a supply destination. was there.

That is, in the conventional latent heat storage device, the antifreeze spouted into the water in the ice making section where the ice particles are precipitated becomes fine particles, and the ice free particles are generated by directly contacting the water and exchanging heat. If stagnation or the like occurs in the water flow in the portion, the generated ice particles stay in the stagnation portion of the water flow and combine with the fine particles of the antifreeze, or adhere to the wall surface of the ice making portion and inhibit ice making. Further, when the generated ice particles are combined with the fine particles of the antifreeze solution, heavy ice blocks are formed and grow below the ice making section, so that stable operation becomes difficult.

Further, in the conventional latent heat storage device,
The antifreeze is cooled to 0 ° C or lower by a refrigerator, and the cooled antifreeze is jetted into water to directly contact heat exchange with water to continuously generate ice particles, but since the antifreeze is jetted directly into water,
Ice particles and water need to be separated from antifreeze. If the separability is not good, there is a problem that it is difficult to perform a stable operation for a long time, or the structure is enlarged to increase construction costs.

Accordingly, an object of the present invention is to provide an ice heat storage device that can efficiently make ice and that can be reduced in size.

[0011]

According to a first aspect of the present invention, there is provided an ice heat storage device, wherein a cooling medium insoluble in water is cooled by a cooling means, and the cooled cooling medium is filled in an ice making section filled with water. An ice heat storage device for causing ice particles to precipitate by heat exchange by direct contact between a cooling medium and water, wherein water nozzle means for jetting water into the ice making section; and Cooling medium nozzle means for ejecting a cooling medium inside the unit, wherein the direction of jetting of water from the water nozzle means and the direction of jetting of the cooling medium from the cooling medium nozzle means are opposed to each other. It is characterized by the following.

[0012] The ice heat storage device according to the second aspect of the present invention,
The jet direction of the water and the jet direction of the cooling medium are opposed to each other in the horizontal direction.

[0013] The ice heat storage device according to the third aspect of the present invention,
The jet direction of the water and the jet direction of the cooling medium are opposed to each other in a vertical direction.

[0014] The ice heat storage device according to the invention of claim 4 is:
The water nozzle means is constituted by a plurality of water nozzles arranged on the same circumference in a horizontal plane, or a water nozzle formed in a ring in the horizontal plane, and the cooling medium nozzle means is provided in a horizontal plane. It is characterized by being constituted by a plurality of cooling medium nozzles arranged on the same circumference or cooling medium nozzles formed annularly in a horizontal plane.

The ice heat storage device according to the invention of claim 5 is:
The ejection direction of the cooling medium is inclined from a vertical direction toward a longitudinal center axis of the ice making unit.

The ice heat storage device according to the invention of claim 6 is
The flow of the cooling medium spouted from the cooling medium nozzle means is surrounded by the flow of water spouted from the water nozzle means.

The ice heat storage device according to the invention of claim 7 is:
The water jetted from the water nozzle means and the cooling medium jetted from the cooling medium nozzle means collide obliquely.

[0018] The ice heat storage device according to the invention of claim 8 is:
The water jetted from the water nozzle means and the cooling medium jetted from the cooling medium nozzle means collide from the front.

The ice heat storage device according to the invention of claim 9 is:
The water jetted from the water nozzle means and the cooling medium jetted from the cooling medium nozzle means collide with a part of them.

According to a tenth aspect of the present invention, in the ice heat storage device, the water jetted from the water nozzle unit and the cooling medium jetted from the cooling medium nozzle unit collide with each other. And

According to an eleventh aspect of the present invention, in the ice heat storage device, an upper end portion of the ice making section is formed in a conical shape so that a mixed flow of ice and water is easily collected.
The lower end of the ice making section is formed in an inverted conical shape so that the cooling medium can be easily collected.

According to a twelfth aspect of the present invention, in the ice heat storage device, a thin plate made of a water-breaking material for preventing adhesion of ice particles is adhered to the inner surface of the conical upper end of the ice making part. It is characterized by.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, an ice heat storage device according to a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a schematic configuration diagram of an ice heat storage device according to the present embodiment. As shown in FIG. 1, the ice heat storage device includes an ice making unit 1, and the inside of the ice making unit 1 is filled with water. Have been. The inlet end of the ice water pipe 2 is connected to the upper end of the ice making unit 1, and the outlet end of the ice water pipe 2 is located above the ice heat storage tank 3. Here, by disposing the outlet end of the ice water pipe 2 at a position about 0.5 to 1 m above the water surface above the ice heat storage tank 3 and dropping the ice water from the outlet end of the ice water pipe 2, The accumulation density of ice in the heat storage tank 3 can be increased.

Further, the ice heat storage device according to the present embodiment is provided with a water nozzle means 4. The water nozzle means 4 includes a water nozzle header 5 provided at an upper position of the ice making section 1 and a water nozzle header 5. And a plurality of water nozzles 6 connected thereto. The water nozzle header 5 is connected to a lower part of the ice heat storage tank 3 via a water pipe 7, and a water pump 8 is provided in the water pipe 7.

Further, the ice heat storage device according to the present embodiment is provided with a cooling medium nozzle means 9. The cooling medium nozzle means 9 is provided with a cooling medium nozzle header 10 provided at an upper position of the ice making section 1, and a cooling medium nozzle header 9. It has a plurality of cooling medium nozzles 11 connected to the nozzle header 10 and arranged so as to face the plurality of water nozzles 6 described above.
The cooling medium nozzle header 10 is connected to the lower end of the ice making unit 1 via a cooling medium pipe 12. Cooling medium piping 1
A cooling medium pump 13 is provided in the middle of 2, and a refrigerator 14 is provided in a cooling medium pipe 12 on the discharge side of the cooling medium pump 13.

The cooling medium nozzle 11 has a double structure (not shown) in order to prevent freezing, a cooling medium for making ice having a low temperature from the inner nozzle, and heat exchange with water from the outer nozzle. The completed cooling medium can be circulated to prevent the nozzle from freezing. The circulation amount at this time may be about 1/10 of the mainstream.

The upper end 15 of the ice making unit 1 is formed in a conical shape to facilitate the flow of the mixed state of the ice particles I and the water W, while the lower end 16 of the ice making unit 1 has The cooling medium M is formed in an inverted conical shape in order to facilitate recovery. Further, a thin plate 17 made of a water-breaking material for preventing adhesion of ice particles is adhered to the inner surface of the upper end 15 of the ice making unit 1.

The cooling medium M is an antifreeze liquid. For example, a liquid having a specific weight of 1.5 times or more of water and a freezing point of -20 ° C. or less, which is insoluble in water, is preferably used. Is done. This Fluorinert liquid is a colorless, transparent, odorless, inert liquid, has a completely fluorinated structure, and is a combination of carbon atom C and fluorine atom F,
Although the boiling point and freezing point differ depending on the number of bonds, the freezing point is almost -20 ° C or less. In addition, the specific weight is 1.7 times or more of water near the temperature of 0 ° C, and the solubility in water is quite low at 7.2 ° C at the temperature of 10 ° C. Therefore, the Fluorinert liquid is completely separated even when mixed with water. Then, after performing heat exchange with water, the florinate liquid sinks below the water.

FIG. 2A shows a positional relationship between the water nozzle 6 and the cooling medium nozzle 11 of the ice heat storage device according to the present embodiment, and FIGS. 2B and 2C show modified examples, respectively. Is shown. 2 (a), 2 (b) and 2 (c) each show one water nozzle 6 and one cooling medium nozzle 11, but the water nozzle 6 and the cooling medium nozzle 11 are located inside the ice maker 1. A plurality are arranged on the same circumference in a horizontal plane.

As shown in FIG. 2A, in this embodiment, the water nozzle 6 and the cooling medium nozzle 11 are arranged so as to face each other in the same straight line in a horizontal plane.
Further, as a modification, the water nozzle 6 and the cooling medium nozzle 11 can be vertically moved from each other in the state shown in FIG. 2A to offset the mounting position in the vertical direction.

Further, as another modified example, as shown in FIG. 2B, the water nozzle 6 is moved from the state shown in FIG.
The nozzle angle can be offset by swinging the cooling medium nozzle 11 by a predetermined angle in a horizontal plane. In addition, the water nozzle 6 and the cooling medium nozzle 11 can be vertically moved from each other in the state shown in FIG. 2B to offset the mounting position in the vertical direction.

As another modification, as shown in FIG. 2C, the mounting positions of the water nozzle 6 and the cooling medium nozzle 11 are moved in parallel in the same horizontal plane from the state shown in FIG. 2A. Offset horizontally. In addition, the water nozzle 6 and the cooling medium nozzle 11 can be vertically moved from the state shown in FIG. 2C so that the mounting position can be offset in the vertical direction.

Next, the operation of the ice heat storage device according to the present embodiment will be described.

The water pump 8 is driven to supply the water W stored in the lower part of the ice heat storage tank 3 to the water nozzle header 5 and the water nozzle 6 via the water pipe 7, and from the water nozzle 6 to the ice making unit 1
Spouts water W into the interior. On the other hand, the cooling medium pump 13 is driven to send the cooling medium M stored in the lower end portion 16 of the ice making section 1 to the refrigerator 14 via the cooling medium pipe 12, and the refrigerator 14 uses the refrigerator 14 at 0 ° C. or less (− (About 3 ° C. to about −8 ° C.). Further, the cooling medium M is supplied to the cooling medium nozzle header 10 and the cooling medium nozzle 11 via the cooling medium pipe 12, and the cooling medium M is ejected from the cooling medium nozzle 11 into the ice making unit 1.

Then, the water W ejected from the water nozzle 6 and the cooling medium M ejected from the cooling medium nozzle 11 collide from the front as shown in FIG. . Then, the water W and the cooling medium M come into direct contact with each other to cause heat exchange, and the water W is cooled, and a part thereof precipitates sherbet-like ice particles I. A mixed flow of the ice particles I having a small specific gravity and the water W collects at the upper end 15 of the ice making unit 1, and the flow is introduced into the ice heat storage tank 3 via the ice water pipe 2. Here, since the upper end 15 of the ice making unit 1 is formed in a conical shape, the flow of the mixed state of the ice particles I and the water W gradually gathers, so that the adhesion of the ice particles I can be prevented.

Further, since the thin plate 17 made of a water-breaking material is adhered to the inner surface of the upper end portion 15 of the ice making unit 1, the thin plate 17 can prevent the adhesion of ice particles to the inner surface of the ice making unit 1. it can.

In the ice heat storage tank 3, the ice particles I float above the water W, and the water W collected at the lower part of the ice heat storage tank 3 is again transported and circulated in the water pipe 7 by the water pump 8. By repeating such circulation, ice I having a high ice filling rate can be accumulated in the ice heat storage tank 3. The ice making unit 1
The ice particles precipitated in the inside can be directly transported together with the water stream to the cold heat demand destination without transporting to the ice heat storage tank 3.

On the other hand, the cooling medium M that has exchanged heat with the water W
Because of its high specific gravity, it is collected in the lower end 16 of the ice making unit 1 after descending in the water, and is again transported and circulated in the cooling medium pipe 12 by the cooling medium pump 13. here,
Since the lower end portion 16 of the ice making section 1 is formed in an inverted conical shape, the height of the liquid level necessary for sucking out the cooling medium M collected in the lower part of the ice making section 1 can be easily secured.

Further, as shown in FIGS. 2B and 2C, the mounting angle or mounting position of the water nozzle 6 and the cooling medium nozzle 11 is offset from each other, so that the water nozzle 6 is jetted from the water nozzle 6. Water W and cooling medium nozzle 1
The cooling medium M ejected from 1 collides with a part of them to generate heat exchange by direct contact, and also generates heat exchange by countercurrent direct contact in part, or heat by direct contact by vortex flow. Exchange occurs, and highly efficient heat exchange can be achieved by these various contact modes.

As described above, according to the ice heat storage device of the present embodiment, the direction in which water is jetted from the water nozzle means 4 and the direction in which the cooling medium is jetted from the cooling medium nozzle means 9 are opposed to each other. The water and the cooling medium partially or entirely collide with each other, thereby achieving high-efficiency heat exchange in the high Reynolds nozzle number region without generating stagnation or stagnation, and enabling efficient ice making. ,
The ice making unit 1 can be reduced in size.

Further, by reducing the size of the ice making unit 1, it becomes possible to bind a plurality of ice making units 1 together.
This makes it possible to make a large amount of ice. In addition,
A plurality of ice making units 1 can be bound together, for example, by joining their side surfaces.

Second Embodiment Next, an ice heat storage device according to a second embodiment of the present invention will be described with reference to FIG. The ice heat storage device according to the present embodiment is a modification of the configuration of the water nozzle unit 4 and the cooling medium nozzle unit 9 in the above-described first embodiment. Description is omitted.

As shown in FIG. 3, in the ice heat storage device according to the present embodiment, the water nozzle means 4 is provided at a lower position of the ice making section 1, and the cooling medium nozzle means 9 is provided at an upper position of the ice making section 1. ing.

That is, the water nozzle header 5 and the water nozzle 6 constituting the water nozzle means 4 are provided at a lower position of the ice making section 1, and the water nozzle header 5 is provided with a plurality of water nozzles 6 in the same circle in a horizontal plane. A plurality is provided on the entire circumference. On the other hand, the cooling medium nozzle header 10 and the cooling medium nozzle 11 of the cooling medium nozzle means 9 are provided at an upper position of the ice making unit 1.
0 corresponds to the plurality of water nozzles 6,
A plurality of cooling medium nozzles 11 are arranged over the entire circumference on the same circumference in a horizontal plane. As a modified example, one or both of the water nozzle 6 and the cooling medium nozzle 11 can be formed in an annular shape.

The direction in which the water W is ejected from the water nozzle 6 is substantially upward, but is inclined from the vertical direction toward the longitudinal center axis of the ice making unit 1. On the other hand, the cooling medium nozzle 1
The direction in which the cooling medium M is ejected from the cooling unit 1 is generally downward, but is inclined from the vertical direction toward the longitudinal center axis of the ice making unit 1.

The water W jetted obliquely upward from the water nozzle 6 and the cooling medium M jetted obliquely downward from the cooling medium nozzle 11 are partially or entirely formed in the ice making section. 1 obliquely collide in the central region. Then, the water W and the cooling medium M come into direct contact with each other to cause heat exchange, and the water W is cooled, and a part thereof precipitates sherbet-like ice particles I. Further, when the water W and the cooling medium M collide with each other at part of them, heat exchange occurs due to countercurrent direct contact, or heat exchange occurs due to direct contact due to eddy current.

As described above, the water W jetted obliquely upward and the cooling medium M jetted diagonally downward come into contact with the water W in various modes, so that the water W and the cooling medium M are separated. Thus, highly efficient heat exchange is achieved. Incidentally, compared with the case where heat exchange is performed using water and the cooling medium in parallel flow, in the case of the present embodiment, the same effect can be obtained with a heat exchange length of about half. Therefore, the ice making unit 1
Can be shortened, and the size of the entire apparatus can be reduced.

The mixed flow of the ice particles I and the water W collects at the upper end 15 of the ice making unit 1, and this flow further flows into the ice water pipe 2.
And is introduced into the ice thermal storage tank 3 via On the other hand, the cooling medium M that has exchanged heat with the water W descends in the water, is collected at the lower end 16 of the ice making unit 1, and is again transported and circulated in the cooling medium pipe 12 by the cooling medium pump 13.

Further, by spraying the cooling medium M obliquely toward the longitudinal center axis of the ice making unit 1, antifreeze liquid particles due to the cooling medium that has not reached the heat exchange adhere to and adhere to the inner wall surface of the ice making unit 1. Ice can be prevented.

Third Embodiment Next, an ice heat storage device according to a third embodiment of the present invention will be described with reference to FIG. Note that the ice heat storage device according to the present embodiment is a modification of the configuration of the water nozzle means 4 in the above-described second embodiment (see FIG. 3), and the following description will focus on portions common to the second embodiment. Is omitted.

As shown in FIG. 4, in the ice heat storage device according to the present embodiment, the direction in which water W is ejected from the water nozzle 6 of the water nozzle means 4 is directed vertically upward (directly above). Water W is spouted in parallel to the inner wall surface of the ice making unit 1. Then, the cooling medium nozzle means 9
The ejection direction of the cooling medium M from the cooling medium nozzle 11 is
As in the above-described second embodiment, since the cooling medium M is obliquely directed downward toward the longitudinal center axis of the ice making unit 1, the flow of the cooling medium M ejected from the cooling medium nozzle 11 is ejected from the water nozzle 6. Wrapped inside by water W.

As described above, the flow of the water W causes the cooling medium M
Icing on the inner wall surface of the ice making unit 1 can be prevented, and the water W and the cooling medium M partially and obliquely collide with each other, thereby causing the counterflow or eddy current. Is effectively generated, and heat exchange between the water W and the cooling medium M is efficiently achieved in the central region of the ice making unit 1. For this reason, it is possible to reduce the size of the ice making unit 1, and the distance l between the cooling medium nozzle header pipe 10a and the water nozzle header pipe 5a shown in FIG.
You can set:

Fourth Embodiment Next, an ice heat storage device according to a fourth embodiment of the present invention will be described with reference to FIG. Note that the ice heat storage device according to the present embodiment is a modification of the configuration of the water nozzle unit 4 and the cooling medium nozzle unit 9 in the above-described second embodiment (see FIG. 3). The description of the common parts is omitted.

As shown in FIG. 5, in the ice heat storage device according to the present embodiment, a water nozzle 6 is provided at an upper position of the ice maker 1, and a cooling medium nozzle 11 is provided at a lower position of the ice maker 1. . More specifically, the water W from the water nozzle 6
And the jetting direction of the cooling medium M from the cooling medium nozzle 11 is opposed in the vertical direction, and the water W jetted from the water nozzle 6 and the cooling medium M jetted from the cooling medium nozzle 11 It is configured to collide from the front. A plurality of water nozzles 6 and a plurality of cooling medium nozzles 11 are provided.

As described above, according to the ice heat storage device of the present embodiment, the water W jetted from the water nozzle 6 and the cooling medium M jetted from the cooling medium nozzle 11 collide from the front in the vertical direction. Therefore, the collision interface between the water W and the cooling medium M becomes horizontal, which can cause a high-efficiency direct contact heat exchange at the time of the collision, and the vertical velocity between the water W and the cooling medium M is offset. The separation time between the water W and the cooling medium M can be lengthened, and the separation between the two can be improved.

Fifth Embodiment Next, an ice heat storage device according to a fifth embodiment of the present invention will be described with reference to FIG. The ice heat storage device according to the present embodiment has a water nozzle 6 vertically opposed to the first embodiment shown in FIGS. 1 and 2A, 2B, and 2C.
In addition, the cooling medium nozzle 11 is additionally provided, and the description of the parts common to the first embodiment will be omitted below.

As shown in FIG. 6, in the ice heat storage device according to the present embodiment, in addition to the plurality of water nozzles 6 and the plurality of cooling medium nozzles 11 which are opposed in the horizontal direction, they are opposed in the vertical direction and the nozzle angle is changed. A plurality of offset water nozzles 6 and a plurality of cooling medium nozzles 11 are provided.
The plurality of water nozzles 6 and the plurality of cooling medium nozzles 11 facing each other in the horizontal direction have various positional relationships shown in FIGS. 2A, 2B, and 2C.

As described above, according to the ice heat storage device according to the present embodiment, the water nozzle 6 and the cooling medium nozzle 11 are opposed to each other in both the horizontal direction and the vertical direction. Since the position is offset, the contact state between the water W ejected from the water nozzle 6 and the cooling medium M ejected from the cooling medium nozzle 11 is partly in direct contact due to collision, and partly in the counter flow. Direct contact or direct contact by eddy current is achieved, and highly efficient heat exchange can be achieved by such various contact modes.

[0060]

As described above, according to the ice heat storage device of the present invention, the direction in which water is ejected from the water nozzle means and the direction in which the cooling medium is ejected from the cooling medium nozzle means are opposed to each other. High efficiency heat exchange in the high Reynolds number region is achieved by collision of the water and the cooling medium in part or in the whole, without generating stagnation or stagnation, it is possible to make ice efficiently, The size of the ice making unit can be reduced.

[Brief description of the drawings]

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

FIG. 2A is a horizontal sectional view of an ice making unit showing a positional relationship between a water nozzle and a cooling medium nozzle of the ice heat storage device according to the first embodiment of the present invention, and FIG. 2B is a water nozzle and a cooling medium nozzle. FIG. 7C is a horizontal sectional view of the ice making unit when the nozzle angle is offset, and FIG. 7C is a horizontal sectional view of the ice making unit when the mounting positions of the water nozzle and the cooling medium nozzle are offset.

FIG. 3 is a schematic configuration diagram of an ice heat storage device according to a second embodiment of the present invention.

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

FIG. 5 is a vertical sectional view of an ice making unit showing a positional relationship between a water nozzle and a cooling medium nozzle of an ice heat storage device according to a fourth embodiment of the present invention.

FIG. 6 is a perspective view of an ice making section showing a positional relationship between a water nozzle and a cooling medium nozzle of an ice heat storage device according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ice making part 4 Water nozzle means 5 Water nozzle header 6 Water nozzle 9 Cooling medium nozzle means 10 Cooling medium nozzle header 11 Cooling medium nozzle 14 Refrigerator 15 Top part of ice making part 16 Lower part of ice making part 17 Thin plate made of water-breaking material I Ice particle M Cooling medium W Water

Claims (12)

[Claims] 1. A cooling medium insoluble in water is cooled by cooling means, and the cooled cooling medium is jetted into an ice making section filled with water, and heat exchange is performed by direct contact between the cooling medium and water. An ice heat storage device configured to precipitate ice particles, wherein water nozzle means for ejecting water into the ice making unit, and cooling medium nozzle means for ejecting a cooling medium inside the ice making unit. Wherein the direction in which water is ejected from the water nozzle means and the direction in which the cooling medium is ejected from the cooling medium nozzle means are opposed to each other. 2. The ice heat storage device according to claim 1, wherein the direction in which the water is ejected and the direction in which the cooling medium is ejected are horizontally opposed. 3. The ice heat storage device according to claim 1, wherein the direction in which the water is ejected and the direction in which the cooling medium is ejected are vertically opposed. 4. The cooling medium nozzle means, wherein the water nozzle means comprises a plurality of water nozzles arranged on the same circumference in a horizontal plane, or a water nozzle formed in a ring in the horizontal plane. 4. The ice heat storage device according to claim 3, wherein the plurality of cooling medium nozzles are disposed on the same circumference in a horizontal plane, or the cooling medium nozzles are formed annularly in the horizontal plane. . 5. The ice heat storage device according to claim 3, wherein a direction in which the cooling medium is ejected is inclined from a vertical direction toward a longitudinal center axis of the ice making unit. . 6. The ice heat storage device according to claim 5, wherein the flow of the cooling medium ejected from said cooling medium nozzle means is wrapped inside by the flow of water ejected from said water nozzle means. apparatus. 7. The cooling medium ejected from the water nozzle means and the cooling medium ejected from the cooling medium nozzle means obliquely collide with each other. The ice heat storage device according to claim 1. 8. The apparatus according to claim 1, wherein water spouted from said water nozzle means and a cooling medium spouted from said cooling medium nozzle means collide from the front. The ice heat storage device according to claim 1. 9. The water jetting means from the water nozzle means and a part of the cooling medium jetting from the cooling medium nozzle means collide with each other. The ice heat storage device according to any one of the above. 10. The apparatus according to claim 1, wherein the water jetted from said water nozzle means and the cooling medium jetted from said cooling medium nozzle means collide in their entirety. The ice heat storage device according to claim 1. 11. An upper end portion of the ice making portion is formed in a conical shape so that a mixed flow of ice and water is easily collected. A lower end portion of the ice making portion collects a cooling medium. The ice heat storage device according to any one of claims 1 to 10, wherein the ice heat storage device is formed in an inverted conical shape for facilitation. 12. An inner surface of a conical upper end of the ice making section,
The ice heat storage device according to claim 11, wherein a thin plate made of a water-breaking material for preventing adhesion of ice particles is attached.