JP2946889B2 - Ice making equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice making apparatus in which water or the like in an ice storage tank is supercooled by a heat exchanger to form ice and, more particularly, to a measure for improving the performance of elimination of supercooling.

[0002]

2. Description of the Related Art Conventionally, as an ice making apparatus, a water circulation path for circulating water in an ice storage tank is provided, and the water is supercooled by a heat exchanger to produce slurry-like ice. As disclosed in JP-A-63-217171, an inclined gutter is formed so that the outlet side of the water circulation path is directed downward at the upstream side and the outlet end is opened at a certain height above the water surface of the ice storage tank. A heat exchanger is interposed between the gutters, and the water cooled by the heat exchanger in the water circulation path is released from the supercooled state at the outlet of the gutter to be iced into a slurry, and the iced material is removed. It is a known technique to prevent the water circulation path from freezing due to the progress of freezing of water by dropping the water into an ice storage tank.

Further, as disclosed in Japanese Utility Model Laid-Open Publication No. 1-112345, the outlet end of the water circulation path is opened above the ice storage tank, and an inclined gutter having a baffle plate is provided in front of the opening to form a heat exchanger. By releasing the supercooled water into the atmosphere and colliding with the baffle, the supercooled state of the water is eliminated, the water is iced, and dropped into the ice storage tank through the gutter, A technique for more reliably preventing freezing of the water circuit is also a known technique.

[0004]

However, in the latter one of the above-mentioned conventional ones, the distance between the heat exchanger and the supercooling elimination part is provided because the supercooling elimination part is provided above the ice storage tank. If the length is too long, the supercooled state may be eliminated by the piping between them. Therefore, since the heat exchanger must be provided near the ice storage tank, there is a problem in that the design such as bending of the water pipe becomes difficult, and the design restrictions are large.

[0005] On the other hand, in the former one of the above-mentioned conventional ones, it is necessary to install a gutter having a considerable difference in height above the ice storage tank as a supercooling elimination part, which again imposes a large design restriction. Further, there is a problem that heat is wasted due to heat exchange with the atmosphere because the time of exposure to the air is long.

Therefore, the supercooled state is eliminated in a continuous flow path through which the supercooled water or the like passes downstream of the supercooling-generating heat exchanger in the water circulation path, and the slurry-like ice is continuously generated. It is possible to go.

However, in this case, if the supercooling state is eliminated simply by re-cooling in the natural flow or increasing the flow velocity due to throttling, it takes a long stroke and time to complete the supercooling elimination. In the meantime, the probability that ice adheres to and grows on the pipe wall of the flow path and clogs the pipe line increases. Also,
If the water or the like remaining in the supercooled state is returned to the ice storage tank and circulated again to the supercooled heat exchanger, there is a possibility that the heat exchanger may be frozen.

[0008] The present invention has been made in view of such a point, and an object of the present invention is to shorten the stroke of the subcooling elimination completion section by taking measures to promote the completion of the elimination of the supercooling state. An object of the present invention is to improve design flexibility while eliminating the possibility of freezing and clogging.

[0009]

In order to achieve the above object, the means of the present invention comprises, as shown in FIG. 1, a conveying means (52) for conveying water or an aqueous solution; A supercooling heat exchanger (22) for supercooling the water or aqueous solution from (52), and without exposing the supercooled water or aqueous solution from the supercooling heat exchanger (22) to the atmosphere. A supercooling elimination section (8) for eliminating the supercooled state, and an ice storage tank (5) for storing slurry-like iced matter generated by eliminating the supercooled state of water or an aqueous solution. An ice making device provided with a water circulation path (51) having a supercooled state, wherein a supercooled state is eliminated and a slurry-like ice is generated between the supercooled elimination section (8) and the ice storage tank (5). Conduit (5) for transporting the compound by the transport force of the transport means (52) and leading it to the ice storage tank (5). 1B), and a part of the pipeline (51B) is provided with the above-mentioned supercooling elimination section so that unstable supercooled water or an aqueous solution which may cause blockage in the pipe does not flow downstream. A supercooling elimination completion part (9) is formed to complete the supercooling elimination of the water or the aqueous solution that could not completely eliminate the supercooled state in (8) without exposing the water or the aqueous solution to the atmosphere. .

According to a second aspect of the present invention, the subcooling elimination completion section (9) is further constituted by a pipe having a rapid expansion section (9a) in which the flow path cross-sectional area rapidly increases. It was decided that.

According to a third aspect of the present invention, as shown in FIG. 4, the subcooling elimination completion section (9) further includes a plurality of rapid expansion sections (9a1) and (9a2). It is what it was.

As shown in FIG. 5, the means taken by the invention of claim 4 further includes a subcooling elimination completion section (9) which is provided with a flow of water or an aqueous solution downstream of the rapid expansion section (9a). A collision member (9c) for colliding is provided.

[0013]

According to the above construction, in the first aspect of the present invention, in the water circulation path (51), water or the like is supercooled and generated by the heat exchanger (2).
The supercooled water (eg, water) which is supercooled in (2) starts resolving the supercooled state by recooling or the like in the subcooling eliminating unit (8), and the supercooled state is completed in the subcooling eliminating unit (9). Upon completion of the elimination, the slurry turns into iced material and returns to the ice storage tank (5). At this time, since the subcooling elimination completion section (9) is provided downstream of the subcooling elimination section (8), the completion of the supercooling elimination is promoted. Therefore, the length of the pipeline on the downstream side of the subcooling eliminating section (8) is reduced, and the degree of freedom in design is increased. In addition, the reduction in the length of the conduit reduces the amount of heating for preventing adhesion of the iced matter to the tube wall, thereby reducing the cost.

According to the second aspect of the present invention, the supercooling eliminating section (8)
Is provided with a supercooling elimination completion section (9) having a rapid expansion section (9a) in which the cross-sectional area of the flow path rapidly expands downstream of.
Turbulence is generated by the rapid expansion of the flow of water or the like at the rapid expansion portion (9a), and the stirring action by the turbulence promotes the completion of the supercooling elimination.

According to the third aspect of the present invention, since the plurality of rapid expansion portions (9a1) and (9a2) are provided in the subcooling elimination completion portion (9), the action of stirring the flow of water or the like is further increased. ,
Completion of supercooling is promoted.

According to the fourth aspect of the present invention, the completion of the supercooling is further promoted by the stirring action of the flow by the suddenly expanding portion (9a) and the collision member (9c).

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows the structure of the refrigerant circuit (1) of the air conditioner of the first embodiment according to the first aspect of the present invention, and (11)
Is a first compressor, (12) is an outdoor heat exchanger disposed on the discharge side of the first compressor (11) and exchanges heat between refrigerant and outdoor air, and (13) is an outdoor heat exchanger ( 12) An outdoor electric expansion valve for adjusting or reducing the flow rate of the refrigerant, wherein each of the devices (11) to (13) is connected in series in a first pipe (14).

Further, (21) is disposed on the discharge side of the second compressor (21), and (22) is disposed on the discharge side of the second compressor (21) for supercooling water or an aqueous solution in an ice storage tank (5) described later. A water heat exchanger (23) adjusts the flow rate of the refrigerant when the water heat exchanger (22) functions as a condenser, and depressurizes the refrigerant when the water heat exchanger (22) functions as an evaporator. An electric expansion valve, wherein each of the devices (21) to (23) is connected in series in a second pipe (24).

(SD1) and (SD2) are oil separators provided in the discharge pipes of the compressors (11) and (21), respectively, and (C1) and (C2) are oil separators (SD1). ),
Capillary tubes for depressurization are provided between (SD2) and oil return pipes (RT1) and (RT2) provided on the suction side of each of the compressors (11) and (21).

Further, (32) and (32) are indoor heat exchangers disposed in each room, and (33) and (33) are indoor electric expansion valves as pressure reducing valves for reducing the pressure of the refrigerant. The devices (32) and (33) are each connected in series, and each set thereof is connected in parallel in the third conduit (34).

The first pipe (14) and the second pipe (24) are connected in parallel to the third pipe (34). Note that (Ac) represents each compressor (11), (21)
An accumulator provided in the third pipe line (34) on the suction side of the accumulator.

(2) connects the gas pipe of the outdoor heat exchanger (12) and the gas pipe of the indoor heat exchangers (32), (32) to the discharge side of each of the compressors (11), (21) or A four-way switching valve (2) that switches to alternately communicate with the suction side. When the four-way switching valve (2) is switched to the solid line side in the figure, the outdoor heat exchanger (12) includes a condenser and an indoor Heat exchanger (32),
(32) functions as an evaporator and performs cooling operation indoors, while when the four-way switching valve (2) is switched to the broken line side in the figure, the outdoor heat exchanger (12) operates as an evaporator and an indoor heat exchanger. (3
2) and (32) function as a condenser to perform a heating operation indoors.

Further, a branch (25) for bypass-connecting a gas pipe of the water heat exchanger (22) and a suction pipe of each of the compressors (11) and (21), and a branch of the water heat exchanger (22). A water-side switching valve (26) for alternately communicating the gas pipe with the discharge pipe of the second compressor (21) and the branch passage (25) is provided. The water-side switching valve (26) utilizes three of the four-way switching valves, and when the water-side switching valve (26) is switched to the solid line side in the drawing, the water heat exchanger (22) is used. ) Communicates with the branch line (25), that is, the suction side of each of the compressors (11) and (21), and the water heat exchanger (22) functions as an evaporator, while the water-side switching valve (26) ) Is switched to the broken line side in the figure, the gas pipe of the water heat exchanger (22) communicates with the discharge pipe of the second compressor (21), and the water heat exchanger (22) functions as a condenser. Has been made. (C3)
Is a capillary tube interposed in the piping on the dead port side of the water side switching valve (26).

Further, a bypass path (3) for connecting the discharge pipes of the first compressor (11) and the second compressor (21) is provided, and the bypass path (3) has a second compressor. A check valve (4) that allows only refrigerant flow from the discharge pipe side of (21) to the discharge pipe side of the first compressor (11) is provided.

That is, when the outdoor heat exchanger (12) and the water heat exchanger (22) function as condensers, when the condensation temperature in the water heat exchanger (22) is high and the pressure is high, the second compression is performed. The gas discharged from the unit (21) is transferred to the outdoor heat exchanger (1).
2) By escaping to the side, the amount of heat radiation can be distributed.

Here, the air conditioner is provided with an ice storage tank (5) for storing slurry iced water or an aqueous solution as a heat storage medium, and the ice storage tank (5). The water and the water heat exchanger (22) are connected by a water circulation path (51) so that water or an aqueous solution can be circulated. The water circulation path (51) extends from the bottom of the ice storage tank (5) to the water heat exchanger (2).
2) an outgoing pipeline (51A) for supplying water and the like, and a return pipeline (51B) for returning slurry-like iced material such as water from the water heat exchanger (22) to the upper part of the ice storage tank (5). The water or the aqueous solution in the ice storage tank (5) is forcibly circulated in the water circulation path (51) by a pump (52) provided in the outward pipe (51A).

The outgoing line (51) of the water circuit (51)
A) The water circulation path (51) is located downstream of the pump (52).
A strainer (53) for removing solid matter such as frozen matter and dust in the water or aqueous solution is interposed, and a water heat exchanger (22) is provided downstream of the strainer (53). A preheat heat exchanger (6) for preheating water or the like supplied to the air conditioner is provided. On the other hand, the liquid line of the refrigerant circuit (1) is provided with a preheating bypass passage (61) for passing a part of the liquid refrigerant to the preheating heat exchanger (6) by bypassing the water-side electric expansion valve (23). A preheating motor-operated expansion valve (62) having a refrigerant decompression function and a flow rate control function is provided downstream of the preheating heat exchanger (6) in the preheating bypass path (61). The preheating electric expansion valve (62) and the water-side electric expansion valve (23) adjust the refrigerant flow rate in the preheating bypass path (61) and reduce the pressure of the refrigerant during the ice making operation of the water heat exchanger (22). Has also been made to do.

Further, in the return line (51B) of the water circulation path (51), downstream of the water heat exchanger (22), the water and the like in the return line (51B) are cooled to form a water heat exchanger. (2
A recooler (8) as a supercooled state eliminating unit for eliminating the supercooled state of the water and the like supercooled in 2), and a method for completing the supercooled elimination of the water and the like by the recooler (8). A subcooling elimination completion section (9) is provided in order from the upstream side. (7) is interposed between the recooler (8) and the water heat exchanger (22), and the freezing of the return line (51B) proceeds to the water heat exchanger (22). This is a heat-retaining heat exchanger as a freezing prevention part for preventing frost.

A water heat exchanger (22) is provided between the liquid line of the refrigerant circuit (1) and the branch (gas line) on the suction side of each of the compressors (11) and (21). A re-cooling bypass passage (81) for bypassing and allowing the refrigerant to flow therethrough is provided in the re-cooling bypass passage (81). The re-cooling capillary tube (C4) and the re-cooler ( 8) is interposed. That is, the recooler (8)
A low-temperature refrigerant decompressed by a re-cooling capillary tube (C4) is passed through the refrigerant, and water and the like supercooled by a water heat exchanger (22) are re-cooled by heat exchange with the refrigerant. I have.

In this case, the gas side pipe of the water heat exchanger (22) is communicated with the branch passage (25) through the water side switching valve (26), while the gas side of the recooler (8) is directly connected. By communicating with the branch path (25), the water-side switching valve (26)
A pressure loss is caused in the water heat exchanger (22) by an amount corresponding to the flow resistance caused by the passage of the water, and the evaporation temperature of the recooler (8) is kept lower than that of the water heat exchanger (22). (22)
The supercooled water or the like can be further cooled to a lower temperature by the recooler (8).

In addition, a heat retaining bypass passage (71) which bypasses the liquid refrigerant from the liquid line of the refrigerant circuit (1) to the heat retaining heat exchanger (7) and returns the liquid refrigerant to the liquid line.
Is provided, and in the heat retaining heat exchanger (7), the return line (51B) is heated by heat exchange with the liquid refrigerant in the liquid line, and the recooler (8) and the return line (51B) are heated. Thus, it is possible to prevent the icing generated by eliminating supercooling of water or the like from adhering to the pipe wall of the return pipe (51B) and preventing freezing from progressing to the water heat exchanger (22).

During the operation of the air conditioner, when performing the cooling operation indoors, the four-way switching valve (2) is switched to the solid line side in the figure. When the water side switching valve (26) is switched to the solid line side in the figure, each of the compressors (11), (21)
After all of the refrigerant discharged from the indoor heat exchanger (12) is condensed in the outdoor heat exchanger (12), the refrigerant is evaporated in each of the indoor heat exchangers (32), (32) to cool the room. When the water-side switching valve (26) is switched to the broken line side in the figure, the refrigerant discharged from the first compressor (11) flows to the outdoor heat exchanger (12), while the second compressor (21). Flows into the water heat exchanger (22), is condensed, and circulates so as to evaporate in each of the indoor heat exchangers (32), (32).

When the electric power is inexpensive at night or the like, a cold storage heat operation for storing cold heat in the ice storage tank (5) is performed. That is, the four-way switching valve (2) and the water-side switching valve (26) are switched to the solid line side in the figure, and each indoor electric expansion valve (33), (33)
, The refrigerant discharged from each of the compressors (11) and (21) is condensed in the outdoor heat exchanger (12), and then the water-side electric expansion valve (2) is closed.
3) (or a preheated electric expansion valve (62)) to decompress and evaporate the water or the aqueous solution in the ice storage tank (5) by evaporating it in the water heat exchanger (22). (5) is designed to store cold heat.

Here, as a feature of the present invention, as shown in FIG. 3, the subcooling elimination completion section (9) includes a return pipe (51).
A large-diameter rapidly expanding portion (9a) in which the pipe diameter of B) is rapidly expanded, that is, a stepped cylindrical shape, and a constricting section (9b) in which the pipe diameter is continuously tapered down to the diameter before expansion. The flow of water or the like which is being re-cooled by the re-cooler (8) and the super-cooled state is eliminated is rapidly expanded to generate turbulence, and the super-cooling is eliminated by the stirring action. Has been made to facilitate completion.

In the first embodiment, after water or the like is supercooled in the water circulation path (51) by the water heat exchanger (22),
The supercooled state is eliminated by recooling the supercooled water or the like in the recooler (8) of the return pipe (51B), and the ice storage tank (5) is turned into slurry-like iced material. Return to
At that time, simply recooling to eliminate the supercooled state,
It takes a long time, that is, a stroke, to complete the supercooling elimination only by the supercooling elimination function by the recooling. For this reason, the length of the pipeline from the recooler (8) to the ice storage tank (5) becomes longer, which causes design restrictions. In the first embodiment, however, the downstream side of the recooler (8) is provided. Since the supercooling elimination completion section (9) having the rapid expansion section (9a) is provided, the flow of water and the like rapidly expands in the rapid expansion section (9a) to generate a turbulent flow.
Completion of supercooling elimination is promoted by the stirring action by this turbulence. Therefore, the length of the pipeline on the downstream side of the recooler (8) can be shortened, and the degree of freedom in design can be increased.
By reducing the length of the pipe, the amount of heating for preventing freezing due to the adhesion of the frost to the pipe wall is reduced, so that the cost can be reduced.

Here, the effect of promoting the completion of the supercooling elimination will be described. 0.5m particle size in 1.5deg super water
The time required for the m-shaped spherical ice nucleus to grow to twice the size is 6.9 seconds without stirring, and 1.9 seconds with stirring. Therefore, the flow rate of water etc. is 100
1 / min, the pipe length required to complete the supercooling elimination is 9.15 when the pipe diameter is 40 mm and there is no enlarged portion.
m and 1.12 m when an enlarged portion where the tube diameter is increased from 40 mm to 60 mm is provided, and the area of the tube wall heated to prevent the adhesion of ice nuclei is 1.15 m without the enlarged portion.
m ^2, and a 0.21 m ² when there is a larger portion, it can be seen a significant shortening of the pipe length and the heating area.

Next, a second embodiment according to the third aspect of the present invention will be described. Also in the present embodiment, the configurations of the refrigerant circuit (1), the water circulation path (51), and the like are the same as those in the first embodiment. FIG. 4 shows the shape of the suddenly expanding portion (9a) of the subcooling elimination completing portion (9) in the second embodiment, and the suddenly expanding portion (9a) sharply increases the pipe diameter on the downstream side of the recooler (8). A first enlarged portion (9a1) having a slightly larger diameter,
It has a large-diameter second enlarged portion (9a2) obtained by further rapidly expanding the enlarged portion (9a1).

In the present second embodiment, by providing such a plurality of rapid expansion portions (9a1) and (9a2), the action of stirring the flow can be further increased, and a significant effect can be exhibited. . It goes without saying that three or more rapid enlargement portions (9a) may be provided.

Next, a third embodiment according to the fourth aspect of the present invention will be described. Also in the present embodiment, the refrigerant circuit (1)
The configuration of the water circulation path (51) is the same as that of the first embodiment. FIG. 5 shows the configuration of the subcooling elimination completion section (9) in the present embodiment. At the downstream side of the rapid expansion section (9a), a turbulent flow is generated at the center of the pipeline by colliding with the flow. A collision member (9c) for tightening is provided.

In the third embodiment, the completion of the supercooled state elimination is promoted by the agitating action of the flow by the suddenly expanding portion (9a) and the collision member (9c), and a significant effect can be exhibited.

Although the recooler (8) in each of the above embodiments re-cools water and the like by exchanging heat with the refrigerant in the refrigerant circuit (1), the present invention is limited to such embodiments. Needless to say, the cooling may be performed by a thermopile or the like.

In each of the above embodiments, the supercooled state is eliminated by recooling water or the like. However, the present invention is not limited to such an embodiment, and the flow rate is reduced by narrowing the pipeline. The present invention can also be applied to a configuration in which the supercooled state is eliminated by increasing the size. FIG. 6 shows a fourth embodiment in which the present invention is applied to a device in which supercooling is eliminated by such a throttle. For example, the downstream side of a supercooling eliminating portion (8) in which the pipe diameter is reduced from 40 mm to 20 mm. so,
Rapidly expanding part (9a) with a sudden increase of the pipe diameter to 40mm
This is an example in which is provided. Also in this case, by providing the supercooling elimination completion section (9) as in the first to third embodiments, the completion of the elimination of the supercooling can be promoted, and the same effect as in each embodiment is exhibited. can do.

Further, although the embodiment is omitted, instead of the recooler (8), the outgoing line (51) of the water circuit (51) is used.
The present invention can also be applied to a configuration in which a bypass path is provided from A) to the downstream side of the water heat exchanger (22), and supercooling is eliminated by introducing ice nuclei.

[0045]

As described above, according to the first aspect of the present invention, the water or the like in the ice storage tank is circulated through the circulation path, and the circulation path is provided with the supercool generation heat exchanger and the supercool elimination unit. In an ice making device in which the supercooled state is eliminated in the supercooling elimination section after supercooling the water and the like in the water circulation path to continuously generate slurry-like iced matter, the downstream side of the supercooling elimination section Since the supercooling elimination completion section is provided in the pipeline, the degree of freedom in design can be increased, and the cost can be reduced by reducing the heating area for preventing freezing of the frost on the pipe wall. be able to.

According to the second aspect of the present invention, since the supercooling elimination completion section having the rapid expansion section in which the cross-sectional area of the flow path suddenly expands is provided, the supercooling elimination is completed by the stirring action due to the turbulence of the flow. The length of the pipeline required for this purpose can be reduced, so that the degree of freedom in design can be increased, and the cost can be reduced by reducing the heating area for preventing freezing of the frost on the pipe wall. Can be planned.

According to the third aspect of the present invention, since a plurality of rapid expansion sections are provided in the subcooling elimination completion section, the stirring effect by the turbulent flow can be further increased, and the completion of the supercooling elimination can be further promoted. Can be promoted.

According to the fourth aspect of the present invention, the collision member that collides with the flow of water or the like and disturbs the flow is provided downstream of the rapid expansion section of the subcooling elimination completion section. It can be increased, and thus can exert a remarkable effect.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of the present invention.

FIG. 2 is a piping diagram of an ice making device and an air conditioner according to an embodiment.

FIG. 3 is a diagram showing a configuration of a subcooling elimination completion unit in the first embodiment.

FIG. 4 is a diagram showing a configuration of a subcooling elimination completion unit in a second embodiment.

FIG. 5 is a diagram illustrating a configuration of a subcooling elimination completion unit according to a third embodiment.

FIG. 6 is a diagram showing a configuration of a subcooling elimination unit and a supercooling elimination completion unit in a fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerant circuit 5 Ice storage tank 22 Water heat exchanger (Subcooling generation heat exchanger) 8 Recooler (Subcooling elimination part) 9 Subcooling elimination completion part 9a Rapid expansion part 9c Collision member 51 Water circulation path

Continuation of the front page (56) References JP-A-3-241252 (JP, A) JP-A-3-99173 (JP, A) JP-A-2-40431 (JP, A) JP-A-1-178528 (JP) , U) Japanese Utility Model 1-97135 (JP, U) Japanese Utility Model 1-1366831 (JP, U) Japanese Utility Model 3-20273 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB Name) F25C 1/00 F24F 5/00

Claims (4)

(57) [Claims] 1. A conveying means (5) for conveying water or an aqueous solution.
2) and supercooling of the water or aqueous solution from the conveying means (52).
A supercooled heat exchanger (22), and water or supercooled water from the supercooled heat exchanger (22).
Eliminates supercooling without exposing the aqueous solution to the atmosphere
A supercooling elimination section (8) for removing the supercooled state of the water or the aqueous solution.
It has an ice storage tank (5) for storing ice-like material in the form of a tree.
An ice making device provided with a water circulation path (51), wherein super cooling is provided between the super cooling elimination section (8) and the ice storage tank (5).
The slurry-like iced material generated by the
The ice storage tank is conveyed by the conveying force of the conveying means (52).
It is constituted by a pipe (51B) leading to (5), and a part of the pipe (51B) may cause blockage in the pipe.
Of unstable supercooled water or aqueous solution
In the above supercooling elimination section (8),
Eliminate supercooling of water or aqueous solution that could not be
Supercooling that completes without exposing the water or aqueous solution to the atmosphere
An ice making device in which a solution completion section (9) is formed. 2. The ice making device according to claim 1, wherein
The cooling elimination completion section (9) is a rapid expansion where the cross-sectional area of the flow channel is rapidly expanding
Being constituted by a conduit having a major part (9a)
An ice making device characterized by the following. 3. The ice making device according to claim 2 , wherein the subcooling elimination completion section (9) includes a plurality of rapid expansion sections (9a1, 9a).
An ice making device characterized by having a2). 4. The ice making device according to claim 2, wherein the subcooling elimination completion section (9) collides with a flow of water or an aqueous solution downstream of the rapid expansion section (9a).
An ice making device comprising: