JP3486020B2 - Ice storage device - 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 heat storage device for producing sherbet-shaped fine ice particles by using night power and using the ice particles as cold energy in an air conditioner or the like.

[0002]

2. Description of the Related Art In recent years, the consumption of electric energy in the industrial field and the consumer field has been increasing. Especially, the maximum power consumption throughout the year occurs during the daytime in summer. The main reason for this is the spread of air conditioning. Therefore, the difference in power consumption between daytime and nighttime is widening, and the reduction of the load factor of the power equipment is a social problem.

Therefore, as one of the countermeasures, an ice heat storage device, which manufactures ice by night-time power, and thaws the ice during the daytime to take out cold heat, is beginning to be popularized for the purpose of leveling the electric power load in summer.

This ice heat storage device provides a stable supply of electric power and economical operation of the air conditioning system by reducing the electric power demand at the peak of daytime air-conditioning load and using the electric power at a low price during off-peak hours at night. It can meet the interests of both the consumer side and the demand side, as well as social demands such as the suppression of carbon dioxide gas generation.

In recent years, in an air conditioning system in an industrial plant, a high-rise building, etc., an ice heat storage device has been put into practical use. In particular, recently, a system called a dynamic system, that is, ice in a sherbet state or fine ice particles is formed to form a water tank. A method has been developed in which ice is melted by floating warmed water after cooling load absorption and refluxing and mixing.

In this ice heat storage device, sherbet-like ice is produced from water by a refrigerator using night power which tends to be excessive, and is melted in the daytime to use the cold heat for air conditioning and industrial applications. It is a thing.

[0007] Conventionally, as such an ice heat storage device, for example, JP-A-5-5541 and JP-A-5-24047.
6, JP-A-5-280769, JP-A-4-28076
There are systems such as those disclosed in JP 236032 A and JP 3-140767 A.

FIG. 14 shows an example of such an ice heat storage device. In FIG. 14, 1 is an ice making tank for storing sherbet-like ice 27, 3 is an ice making cylinder for producing ice from water 2, and lower parts of the ice making tank 1 and the ice making cylinder 2 are connected by a connecting portion 8. Further, a first antifreeze liquid recovery unit 5 for recovering the antifreeze liquid 4 is provided at the bottom of the ice making tank 1, and a second antifreeze liquid recovery unit 6 for recovering the antifreeze liquid 4 is also provided at the bottom of the ice making cylinder 2.
Is provided, and the first and second antifreeze liquid recovery sections 5 and 6 are connected by an antifreeze pipe 7.

On the other hand, a refrigerating machine 13 is connected to the second antifreeze liquid collecting section 6 through a pipe 14a and is supplied with the antifreeze liquid 4 by being pressurized by an antifreeze pump 15 provided in the middle of the pipe 14a. The antifreeze liquid cooled by the refrigerator 13 is supplied to the antifreeze liquid nozzle 12 arranged at the top of the ice making cylinder 2 through the pipe 14c.

Reference numeral 18 denotes a water pump connected to the water intake portion 10 formed in the upper portion of the ice making tank 1 via a pipe 14d. The water pump 18 sucks cold water accumulated in the water intake portion 10 to form a pipe 14f. Is supplied to the cold water supply port provided at the top of the ice making cylinder 2.

Here, 9 is an interface between the antifreeze liquid 4 and the water 2 collected in the antifreeze liquid collecting parts 5 and 6, and 11 is a wire net stretched between the water intake part 10 and the upper surface of the sherbet-like ice 27. . Further, 12a is a low-temperature antifreeze outlet which is provided at the tip of the antifreeze nozzle 12, and 12c is an outlet for cold water which has flowed in from the supply port for cold water.

Further, 16a is a refrigerator 13 of a pipe 14a.
A valve provided on the antifreeze liquid inflow side, a valve 16c provided on the discharge side of the water pump 18 of the pipe 14f, a flow meter 17b for measuring the flow rate of the antifreeze liquid supplied from the refrigerator 13 to the ice making cylinder 3, Reference numeral 17c is a flow meter for measuring the flow rate of water supplied from the water pump 18 to the ice making cylinder 3.

In the ice heat storage device having such a structure, the antifreeze liquid 4, such as an oily liquid or a fluorine-based inert liquid, which is water-insoluble and has a larger specific gravity than water, cooled to 0 ° C. or less by the refrigerator 13, that is, 0 ° C. When a liquid having a lower freezing point is ejected as a cooling medium through the antifreeze nozzle 12 from the low-temperature antifreeze outlet 12a into the water tank called the ice making cylinder 3, this cooling medium 4 flows out from the water pump 18 into the water tank called the ice making cylinder 3. Direct heat contact with water 2 causes heat exchange. As a result, a part of the water 2 becomes fine ice, and the ice particles float from the lower part of the ice making cylinder 2 through the connecting portion 8 into the ice making tank 1 and collect them to form sherbet-like ice 2.
Stored as 7.

On the other hand, the antifreeze solution 4 that has exchanged heat with the water 2 is recovered by the second antifreeze solution recovery section 6 and the first antifreeze solution recovery section 5 at the bottom of the ice making cylinder 3 and the ice making tank 1, respectively, and is frozen by the antifreeze solution pump 15. It is returned to the machine 13 and used again for ice making.

At the time of cooling demand, cold heat can be obtained by defrosting the sherbet-shaped ice 27 floating above the ice making tank 1. By the way, in the above-mentioned ice heat storage device, even if the antifreezing liquid nozzle 12 for ejecting the antifreezing liquid 4 into the water in the ice making cylinder 3 is made of a material having a good heat insulating property, the antifreezing liquid nozzle 12 blows out during the ice making operation. The water freezes at the tip of the portion 12a, and as shown in FIG. 15, the water freezes on the tip of the antifreeze solution blowing portion 12a.

Since the static ice 26 that has landed on the ice comes into contact with the water 2 while being cooled by the antifreeze liquid 4, it grows and eventually becomes an obstacle to the ejection of the antifreeze liquid 4, and the tip of the antifreeze liquid blowing portion 12a of the antifreeze liquid nozzle 12 is reached. May be blocked, or the ice making cylinder 3 may be blocked to make it extremely difficult for water to flow. Due to the presence of the static ice 26, the antifreeze liquid 4 cooled to 0 ° C. or less is not flown directly downward and drifts,
When the static ice 26 has a portion that has grown sufficiently close to the inner wall, the antifreeze liquid 4 may pass between the static ice 26 and the inner wall, so that the inner wall of the ice making cylinder 3 is cooled and the inner wall of the ice making cylinder is porous. -Shaped icing occurs. This static ice 26 also grows and promotes the blockage of the ice making cylinder 3. As a result, the ice making operation cannot be performed, and the upper portion of the ice making cylinder 3 is at a high pressure and is in a dangerous state.

Therefore, in such a case, the ice making operation is stopped, the static ices 26 and 37 are melted, and then the ice making operation is restarted, so that the continuous ice making operation cannot be performed.

As a means for preventing freezing of the antifreeze solution blowing portion 12a of the antifreeze solution nozzle 12 in this way, there is a double tube nozzle structure as disclosed in Japanese Patent Laid-Open No. 5-346242. That is, as shown in FIG. 16, the inner pipe 21 and the outer pipe 22 have a double structure. Further, the antifreeze liquid 4 of 0 ° C. or more is connected to the circulation cooling device so as to flow through the antifreeze liquid pipe 24.

In this ice heat storage device, the antifreeze liquid 4 of 0 ° C. or less flowing through the inner pipe 21 of the antifreeze liquid jet nozzle is blown out and sprinkled into the ice making cylinder 3, and the water 2 which comes into contact with the sprayed antifreeze liquid 4 is sprayed.
The freezing liquid of the antifreezing liquid nozzle 12 is prevented by freezing the static ice 26 generated in the antifreezing liquid blowing portion 12a of the antifreezing liquid nozzle 12 by the antifreezing liquid 4 of 0 ° C. or more flowing between the inner pipe 21 and the outer pipe 22. Freezing is prevented in the vicinity of the tip of the blowout portion 12a, and continuous precipitation of ice particles is possible. This is because the film of the antifreeze liquid 4 at 0 ° C. or higher prevents water at 0 ° C. or lower at the tip of the inner tube 21.

However, in actual operation, this membrane may not work properly. For example, when the valve 16b or the antifreeze pump 15 is abnormal, the flow rate of the antifreeze liquid 4 at 0 ° C. or more becomes smaller than an appropriate amount, and the cylindrical film-like blowout is broken. This is also the case when foreign matter is mixed between the inner pipe 21 and the outer pipe 22.

Further, the following cases may occur. The antifreeze solution 4 is conveyed by the antifreeze solution pump 15 from the antifreeze solution recovery sections 6 and 5 provided at the bottom of the ice making cylinder 3 and the ice making tank 1, respectively, but when it is sucked out of the antifreeze solution recovery sections 6 and 5 for some reason, it contains a sufficient amount of water. If it does, the antifreeze nozzle 12
Immediately after being blown out from between the inner pipe 21 and the outer pipe 22 in the antifreeze solution blowing section 12a, the antifreeze solution blowing section 12a freezes and icing occurs on the antifreeze solution blowing section 12a.

This icing makes it difficult to blow the antifreeze liquid 4 at a temperature of 0 ° C. or more into a cylindrical film, promotes the icing, and the static ice 26 in contact with the water 2 grows. Further, as described above, the static ice 37 is attached to the inner wall of the ice making cylinder 3.
Occurs and grows. As a result of the above phenomenon, there is absolutely no guarantee that the antifreeze solution outlet 12a of the antifreeze solution nozzle 12 will not freeze and the ice making cylinder 3 will not be blocked.

Therefore, when the ice making cylinder 3 is closed, the ice making operation is stopped to avoid a dangerous state and the antifreeze nozzle 1
It is necessary to prepare a countermeasure routine for dropping or melting the static ice 26 generated from the antifreeze solution blowing section 12a of No. 2 described above.

The coping routine is at least 0 ° C.
The flow of the lower antifreeze liquid 4 into the ice making cylinder 3 is stopped, and the static ices 26 and 37 become sufficiently small and eventually disappear. The static ices 26, 37 fall because the static ices 26, 37 contain the antifreeze liquid 4 having a larger specific gravity than the water 2 and become heavy.

[0025]

Therefore, it is necessary to detect the ice clogging by detecting the increase in the pressure of the water 2 above the ice making cylinder 3 or the decrease in the flow rate of the water 2. It is possible. However, the pressure increase starts after the ice clogging has sufficiently advanced, and when it starts to rise, the ice clogging rapidly progresses to an unacceptable degree in a short time, and the pressure rise also sharply. A similar change occurs when the flow rate decreases. Therefore, if it is detected that the ice blockage occurs when these measured values change to some extent, the handling routine may not be able to start before the ice blockage reaches an unacceptable level.

When the ice making operation is stopped, the static ice 26 drops away from the vicinity of the antifreeze liquid blowing portion 12a of the antifreeze liquid nozzle 12 or melts and becomes sufficiently small. The static ice 37 also falls apart from the inner wall of the ice making cylinder 3 or melts and becomes sufficiently small. For example, when the refrigerator 13 that cools the antifreeze liquid 4 to 0 ° C. or less is stopped, the static ices 26 and 37 are dropped or melted and become sufficiently small and eventually disappear, but the static ices 26 and 37 disappear. The faster you enter the coping routine, the more static ice 2
6,37 are small and not sturdy so they are easy to remove.

Incidentally, the method of removing the static ice 26 is new, and even when a positive means is provided, the faster it is, the easier it is to remove. Further, when a plurality of ice making cylinders 3 are provided in the ice making tank 1 or when there are a plurality of ice making cylinders 3 because there are a plurality of ice making tanks 1, the following is performed. That is, the refrigerator 13 for the antifreeze liquid 4 that cools the water 2 is shown in FIG.
As shown in FIG. 1, the cooled antifreeze liquid 4 is sent to each ice making cylinder 3 not as a plurality but as one unit.

In FIG. 11, the valve 16a is on the upstream side of the refrigerator 13, but in this case, the pipes 14c are branched corresponding to the number of the ice making cylinders 3 and the antifreeze nozzle 1 is branched from this branched point.
One valve 16a is provided between the two antifreeze solution outlets 12a.

In the figure, reference numeral 35 represents a set from the antifreeze solution blowing section 12a of the antifreeze solution nozzle 12 to the antifreeze solution collecting section 6. In this case, only the antifreeze liquid 4 to the ice-making cylinder 3 having the ice blockage is not sent by closing the valve 16a. When the cooled antifreeze liquid 4 is sent to the ice-making cylinder 3 with ice clogging, the cooling capacity of the refrigerator 13 is wasted, but as described above, the valve 16a is used.
Since the anti-freezing liquid is not sent by closing, the cooling capacity is assigned only to the other ice making cylinders 3, and the efficiency can be improved. Further, there is an advantage that the useless cooling capacity can be reduced as the ice clogging is detected earlier.

As described above, if the ice clogging of the ice making cylinder is detected by the pressure and the flow rate, it cannot be detected and dealt with in advance. Therefore, according to the present invention, the reliability of the system can be improved by detecting the symptom of the ice making cylinder before it becomes clogged and putting it into a coping routine in advance. An object of the present invention is to provide an ice heat storage device capable of reducing waste of cooling capacity of a refrigerator and improving ice making efficiency when the antifreeze is cooled by one refrigerator.

[0031]

In order to achieve the above object, the present invention constitutes an ice heat storage device by the following means. The invention corresponding to claim 1 is provided vertically, and water and water-insoluble antifreeze having a specific gravity larger than that of water at a temperature lower than 0 ° C. are flowed through the antifreeze jet nozzle to form fine ice particles. An ice making cylinder to be produced, an antifreeze liquid collecting part for collecting an antifreeze liquid that flows down together with water and ice particles, and an ice making cylinder which is vertically provided in communication with the ice making cylinder and the antifreeze liquid collecting part. An ice making tank that raises the water and the ice particles that have flowed down, a water circulation system that causes the water taken from the intake port of this ice making tank to flow into the interior from the top of the ice making cylinder by a water pump, and is collected in the antifreeze liquid collecting section. An antifreeze liquid circulation system for inflowing the antifreeze liquid from the top of the ice making cylinder into the inside by an antifreeze liquid pump, and a refrigerator provided in this antifreeze liquid circulation system, below the antifreeze liquid outlet of the antifreeze liquid injection nozzle Together with the brought into close contact with a plurality of temperature sensors in the outer peripheral wall surface of the ice making cylinder of the provided with circumferentially, this
Cover the outer wall of the ice-making cylinder with the temperature sensor closely attached with a heat insulating material.
The temperature of the inner wall surface of the ice making cylinder due to the drift of the antifreeze solution
Is decreased to a certain temperature of 0 ° C. or lower,
When at least one of the temperature sensors detects, the ice making operation is stopped by the output of the control device.

According to the second aspect of the invention, water is provided vertically, and water and water-insoluble antifreeze liquid having a specific gravity larger than that of water and having a temperature lower than 0 ° C. are made to flow through the antifreeze liquid jet nozzle to form fine particles. An ice making cylinder for producing ice grains, an antifreeze liquid collecting section for collecting antifreeze liquid formed at the bottom of the ice making cylinder and flowing down together with water and ice grains, and an ice making cylinder and an antifreeze liquid collecting section, respectively, which are vertically provided in communication with each other. An ice making tank that raises water and ice particles that have flowed down the ice making cylinder, an ice storage tank that is provided in communication with the upper portion of the ice making tank and that stores the ice that has moved from the ice making tank, and water intake from the intake port of this ice storage tank A water circulation system that causes water to flow in from the top of the ice making cylinder by a water pump, and an antifreeze circulation system that causes the antifreeze collected in the antifreeze collection unit to flow in from the top of the ice making cylinder by an antifreeze pump , With this and a antifreeze circulation refrigerator provided, said to contact a plurality of temperature sensors in the outer peripheral wall surface of the antifreeze injection the ice making cylinder from antifreeze air outlet below the nozzles provided in the circumferential direction, these temperatures Sensor
Covered with a heat insulating material to the outer wall of the ice making cylinder in close contact with, and the input to the control unit a signal from the temperature sensor, the antifreeze
Due to the uneven flow, the temperature of the inner wall surface of the ice making cylinder is 0 ° C or less
When the temperature has dropped to the lower limit of the temperature sensors
If at least one is detected, the ice making operation is stopped by the output of the control device.

The invention corresponding to claim 3 is a fine particle which is provided vertically and injects water and water-insoluble antifreeze having a specific gravity lower than 0 ° C., which is larger than water, from the top through the antifreeze jet nozzle. An ice making cylinder for producing ice grains, an antifreeze liquid collecting section for collecting antifreeze liquid formed at the bottom of the ice making cylinder and flowing down together with water and ice grains, and an ice making cylinder and an antifreeze liquid collecting section, respectively, which are vertically provided in communication with each other. Ascending pipe that raises the water and ice particles that have flowed down the ice making cylinder, transfer pipe that is connected to the downstream side of this ascending pipe and that conveys the two-phase flow of the water and ice particles to a specified location, and the transfer pipe An ice heat storage water tank that stores a two-phase flow of water and ice flowing down from the opening end side, and a water circulation that causes the water taken from the intake port of this ice heat storage water tank to flow into the inside from the top of the ice making cylinder by a water pump System and before An antifreeze liquid circulation system that causes the antifreeze liquid collected in the antifreeze liquid collection part to flow into the inside from the top of the ice making cylinder by an antifreeze liquid pump, a refrigerator provided in this antifreeze liquid circulation system, and an upstream side of this refrigerator and a valve, in close contact with a plurality of temperature sensors provided with circumferentially outer peripheral wall surface of the ice making cylinder below the antifreeze air outlet of the antifreeze injection nozzle, in close contact with these temperature sensors
The outer wall of the ice making cylinder is covered with a heat insulating material, and a signal from each of the temperature sensors is input to the control device, so that the antifreezing liquid drifts.
The temperature of the inner wall surface of the ice making cylinder is lowered to a certain temperature below 0 ° C.
At least one of the plurality of temperature sensors
When the pieces are detected, the ice making operation is stopped by the output of the control device.

Therefore, in the ice heat storage device having such a structure, when the static ice 26 adhering to the antifreeze outlet 16a grows sufficiently, the antifreeze cooled to 0 ° C. or lower due to the presence of the static ice 26. When the static ice 26 does not drop directly below and drifts, or when the static ice 26 has a portion that has grown sufficiently close to the inner wall, the antifreeze liquid 4 may pass between the static ice 26 and the inner wall.
The inner wall of the is cooled. Static ice 37 lands on the inner wall of the ice making cylinder 3. In this case, in the upper part of the ice making cylinder 3, the pressure of the water 2 rises and the flow rate of the water 2 decreases much faster than usual, at 0 ° C.
The temperature of the outer wall, which is in the vicinity, drops sharply. In the present invention, this phenomenon is detected by the temperature sensor, and when the temperature drops to a certain temperature of 0 ° C. or less, a countermeasure routine of stopping the ice making operation is started. As a result, due to the increase in the pressure and the decrease in the flow rate of the water 2 above the ice making cylinder 3 due to the growth of the static ices 26 and 37,
Early detection is possible, and a dangerous state can be avoided early. In addition, the active ice removal routine can be quickly entered.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic view showing a first embodiment of an ice heat storage device according to the present invention. The same parts as those in FIG. 14 are designated by the same reference numerals. In FIG. 1, 1 is an elongated vertical ice-making tank (water tank) that stores water 2 inside, and 3 is an ice-making tube that is vertically installed adjacent to the ice-making tank 1 and that mixes antifreeze liquid 4 with water. At the bottoms of the ice-making tank 1 and the ice-making cylinder 3, cup-shaped antifreeze liquid collecting portions 5 and 6 for collecting the antifreeze liquid 4 are formed, and the antifreeze liquid collecting portions 5 and 6 are connected to each other by an antifreeze liquid pipe line 7. .

The lower portions of the ice making tank 1 and the ice making cylinder 3 are connected by a connecting portion 8 so that the vicinity of an interface 9 between the antifreeze liquid 4 and the water 2 is in communication. A water intake section 10 is formed on the upper portion of the ice making tank 1, and a wire net 11 is provided below the vicinity of the water intake section 10. Further, an antifreeze nozzle 12 is provided on the top of the ice making cylinder 3.

On the other hand, 13 is a refrigerator, and the pipe 1 is provided between the refrigerator 13 and the antifreeze liquid collecting section 6 provided at the bottom of the ice making cylinder 3.
4a, and an antifreeze pump 15 is installed on the way. The antifreeze pump 15 collects the antifreeze liquid 4 collected in the antifreeze liquid collecting section 6 at the bottom of the ice making cylinder 3 into the refrigerator 13.
Through the pipe 14c to the low-temperature antifreeze outlet 12a of the antifreeze nozzle 12 installed on the top of the ice making cylinder 3. A valve 16a is provided on the inflow side pipe 14a of the refrigerator 13, and a flow meter 17b is provided on the pipe 14c connecting the refrigerator 13 and the low-temperature antifreeze outlet 12a.

Further, water is taken from the water intake 10 provided at the upper part of the ice making tank 1 by the water pump 18 through the pipe 14d, and this water is arranged at the upper part of the ice making cylinder 3 through the pipe 14f from the pump discharge port. Water is sent to the water outlet 12c located at the outermost periphery. In this case, the pipe 14f is provided with a valve 16c and a flow meter 17c.

In the ice heat storage device having such a structure, the temperature sensor 19 is brought into close contact with the outer wall of the ice making cylinder 3. And
The outer wall of the ice making cylinder 3 to which the temperature sensor 19 is closely attached is covered with a heat insulating material. In this case, the temperature sensor 19 may be a thermocouple, a resistance temperature detector, or another type.

The temperature sensor 19 is attached to the outer wall of the ice making cylinder 3 for the following reason. That is, if a temperature sensor is installed inside the ice-making cylinder 3, the temperature sensor freezes, so that not only a correct temperature cannot be measured but also ice clogging is promoted.

The signal from the temperature sensor 19 which is brought into close contact with the outer wall of the ice making cylinder 3 in this way is inputted to the measuring device 20. The measuring device 20 measures a signal from the temperature sensor 19 during the ice making operation and monitors the value as needed. When the temperature value is sufficiently lowered to a certain temperature of 0 ° C. or lower, for example, the antifreeze refrigerator 13 or the antifreeze pump 15 is stopped,
Stop the ice making operation. Here, the certain temperature of 0 ° C. or lower may be 0 ° C. or −2 ° C., for example.

Next, the operation of the ice heat storage device configured as described above will be described. During the ice making operation, the low temperature antifreeze liquid 4 cooled to below freezing point by the refrigerator 13 is the antifreeze liquid outlet 12
It flows out from the inside of the ice making cylinder 3 and is mixed with the water 2.

At this time, the water 2 having a relatively low blowing speed flows out from the blowing outlet 12c around the low-temperature antifreeze liquid 4. In this way, the low-temperature antifreeze liquid 4 flowing out from the antifreeze liquid outlet 12a exchanges heat with the surrounding water 2 while descending in the water 2. The descending ice and the antifreeze liquid 4 have a relative speed to each other when they descend to some extent, but they become constant speeds respectively and descend vertically inside the ice making cylinder 3.

In this case, the water 2 is cooled by the antifreeze liquid 4, and the precipitation of the ice 27 is observed in part. In this way, the cold heat of the antifreeze liquid 4 is stored as the heat of solidification of the ice 27, and the water temperature remains at about 0 ° C.
It is heated up to. The flow of the water 2 containing the ice 27 that has descended to the lower portion of the ice making cylinder 3 is converted from the vertical direction to the horizontal direction by the connecting portion 8 with the ice making tank 1, and is smoothly guided to the ice making tank 1.
Then, the ice 27 introduced to the ice making tank 1 through the connecting portion 8
Together with the upward flow of water 2 slowly rise inside the ice-making tank 1, and the ice 27 is stored as sherbet-like ice 27 due to its buoyancy and convection effect.

In this case, the ice stored in the upper part of the ice making tank 1 is prevented from being sucked from the water intake 10 by the wire net 11 and floats in a form of widely covering the water surface. Further, since the wire net 11 is provided as a filter near the water intake port 10, the ice 27 is not supplied from the water intake port 10 into the ice making cylinder 3 through the pipes 14d and 14f, and the ice making tank 1 A high density sherbet-like ice 27 can be stored in the upper part.

Although not shown in the drawing, an ice making system for melting ice 27 at the time of cooling load during the daytime when ice making at night is completed is added to the ice making tank 1. Now, as shown in FIG. 15, when the static ice 26 accreted on the antifreezing liquid outlet 12a grows, the low temperature antifreezing liquid 4 drifts as described above and passes near the inner wall of the ice making cylinder 3 so that the ice making cylinder 3 Cool the inner wall of the.

As shown in FIG. 15, when the static ice 26 adhering to the antifreeze outlet 12a has grown sufficiently on the outer wall of the ice making cylinder 3, the antifreeze 4 cooled to 0 ° C. or lower due to the presence of the static ice 26 is directly below. It does not descend and drifts. When the static ice 26 has a portion that has grown sufficiently close to the inner wall, the antifreeze liquid 4 may pass between the static ice 26 and the inner wall. At this time, ice cube 3
Static ice 37 lands on the inner wall of the.

When the antifreeze liquid 4 cools the inner wall of the ice making cylinder 3, the temperature of the outer wall of the ice making cylinder 3 is also lowered, and is lowered to a temperature sufficiently lower than 0 ° C. FIG. 7 shows temperature measurement values when four temperature sensors 19 are installed in the circumferential direction at positions sufficiently lower than the antifreeze solution outlet 12a. In FIG. 7, the horizontal axis indicates time, and time advances from right to left. As can be seen from this temperature measurement result, the temperature value initially indicates 1 ° C., which is higher than 0 ° C., but it sharply decreases near time t1. After that, when the refrigerator 13 for cooling the antifreeze liquid 4 is stopped at time t3, the static ice 26, 37
Drops or melts, causing the temperature to rise and return to the original temperature.

The time when the pressure value measured in the upper part of the ice making cylinder 3 starts to rise is t2, and the pressure rapidly rises from this time t2. That is, the ice making cylinder 3 is clogged with ice. t1
Is about 5 minutes earlier than t2. Therefore, the temperature lowers sufficiently faster than the rise of the water pressure and the decrease of the water flow rate in the upper portion of the ice making cylinder 3, and the ice clogging can be detected in advance by the temperature decrease.

When the ice blockage is detected in advance, the ice making operation is stopped. For example, when the refrigerator 13 for the antifreeze liquid 4 is stopped, the static ices 26 and 37 are dropped or melted and become sufficiently small, and eventually disappear. As shown in FIG. 7, the value of the temperature sensor 19 immediately rises when the refrigerator 13 is stopped, and returns to the original temperature value near 0 ° C. That is, it means that the dangerous state can be avoided.

It should be noted that the earlier the action of removing the static ices 26, 37 enters the coping routine, the smaller the static ices 26, 37 are, and they are not sturdy, so the static ices 26, 37 are easily removed.
Although the case where one ice making cylinder 3 is connected to the ice making tank 1 is shown in the first embodiment, a system in which a plurality of ice making cylinders 3 are connected may be used. In this case, each of the ice making cylinders 3 may have the same configuration as described above.

Further, as the antifreeze liquid 4, fluorine and carbon 2 are used.
You may use the liquid (for example, brand name: Fluorinert etc.) which consists of elements. Next, a second embodiment of the present invention will be described with reference to FIGS.

FIG. 2 is an overall schematic view showing a second embodiment of the ice heat storage device according to the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. Will be described only.

As shown in FIG. 2, the nozzle provided in the upper portion of the ice making cylinder 3 is the antifreezing liquid nozzle 12 having a double pipe structure as described in JP-A-5-346242 and JP-A-7-71846. Antifreeze liquid 4 below 0 ℃ in the inner tube 21
Flow between the inner tube 21 and the outer tube 22 and the antifreeze liquid at 0 ° C or higher 4
Is connected to a circulation cooling device composed of a refrigerator 13, an antifreeze pump 15, and others.

That is, the antifreezing liquid nozzle 12 has a double pipe structure of an inner pipe 21 and an outer pipe 22 as shown in FIG. 3 and FIG. 4, and the inner pipe 21 of the antifreezing liquid nozzle 12 and the antifreezing liquid recovery part 6 are the antifreezing liquid pipe 14a. , 14c. The antifreeze liquid collecting part 6 below the ice making cylinder 3 is connected to the antifreeze liquid collecting part 5 below the ice making tank 1 by a pipe 7.

An antifreeze pump 15 and a refrigerator 13 are sequentially arranged in the antifreeze pipe 14a in the antifreeze flow direction. Further, the outer pipe 22 of the antifreezing liquid nozzle 12 is connected to a branch pipe 14b that is branched between the antifreezing liquid pump 15 of the antifreezing liquid pipe 14a and the refrigerator 13.

In the ice heat storage device having such a structure, the temperature sensor 1 is provided on the outer wall of the ice making cylinder 3 as in the first embodiment.
Attach 9 closely. Then, the outer wall of the ice making cylinder 3 to which the temperature sensor 19 is closely attached is covered with a heat insulating material.

Next, the operation of the second embodiment will be described. The antifreeze liquid 4 cooled to a temperature of 0 ° C. or less in the refrigerator 13 is supplied to the inner pipe 21 of the antifreeze liquid nozzle 12 through the antifreeze liquid pipe 14c.
Is sprinkled into the water 2 in the ice making cylinder 3 from the above.

On the other hand, the remaining portion of the antifreeze liquid 4 guided to the antifreeze liquid pipe 14a is sent to the outer pipe 22 of the antifreeze liquid nozzle 12 having the double pipe structure through the branch pipe 14b. This antifreeze liquid 4 is contained in the antifreeze liquid recovery parts 5 and 6, and since it does not pass through the refrigerator 13, it has a temperature of 0 ° C. or higher. This antifreeze liquid 4 of 0 ° C. or higher is supplied from the outer pipe 22 of the antifreeze liquid nozzle 12 to the ice making cylinder. Three
It is discharged and sprayed into the water 2 inside.

At this time, the film of the antifreeze liquid 4 having a temperature of 0 ° C. or higher prevents the water of 0 ° C. or lower from existing at the tip of the inner tube 21. Therefore, in the antifreezing liquid nozzle 12 having such a double pipe structure, the static ice 26 which tends to adhere to the antifreezing liquid outlet 12a of the inner pipe 21 is melted to prevent the freezing of the antifreezing liquid nozzle 12, and the antifreezing liquid nozzle 12
It is possible to continuously deposit the ice particles 27.

However, in actual operation, this membrane may not work properly. For example, when the flow rate of the antifreeze liquid 4 at 0 ° C. or higher becomes smaller than an appropriate amount due to an abnormality in the valve 16b or the antifreeze liquid pump 15, and the like, the cylindrical film-like blowout is broken. This is also the case when foreign matter is mixed in the inner tube 21 and the outer tube 22. Furthermore, the following cases may occur. That is, the antifreeze liquid 4 is conveyed by the antifreeze liquid pump 15 from the antifreeze liquid recovery parts 6 and 7 provided in the lower part of the ice making cylinder 3 and the ice making tank 1, but for some reason, a sufficient amount of antifreeze liquid is sucked out from the antifreeze liquid recovery parts 6 and 7. When water is included, the inner pipe 2 is blown at the antifreeze outlet 12a.
Immediately after being blown out from between 1 and the outer tube 22, it freezes and icing occurs on the antifreeze outlet 12a. This ice accretion makes it difficult to blow out the antifreeze liquid 4 at a temperature of 0 ° C. or more in the form of a cylindrical film, promotes the ice accretion, and further, the static ice 26 in contact with the main stream of water 26
Grows. Further, as described above, the static ice 37 is deposited on the inner wall of the ice making cylinder 3 and grows.

Therefore, even in such a case, the temperature value detected by the temperature sensor 19 is constantly monitored by the measuring device 20 as in the first embodiment, and if the temperature value is sufficiently zero.
When the temperature drops to a certain temperature equal to or lower than 0 ° C., the ice clogging can be detected in advance by stopping the ice making operation by stopping the antifreezing liquid refrigerator 13 and the water pump and the antifreezing liquid pump 15, for example.

Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 5 and FIG. 6 are overall schematic views showing a third embodiment of the ice heat storage device according to the present invention.
The same parts as those in FIG.

As shown in FIGS. 5 and 6, a plurality of temperature sensors 19 are brought into close contact with the outer peripheral wall surface of the ice making cylinder 3 below the antifreezing liquid outlet 12a of the double structure antifreezing liquid nozzle 12, and these temperature sensors 19 are also attached. The outer wall of the ice making cylinder 3 in close contact with is covered with a heat insulating material, and the signals from these temperature sensors 19 are input to the measuring device 20.

Here, FIG. 5 shows a case in which six temperature sensors 19 are provided on the outer peripheral wall surface of the ice making cylinder 3 at intervals of 60 °, and in FIG.
The figure shows the case where the steps are provided at 60 ° intervals.

Further, the measuring device 20 to which the temperature value from each of the temperature sensors 19 is inputted is set so that the ice clogging is detected in advance when the temperature value is lowered to -2 ° C. .

In FIG. 8, six temperature sensors 19 are provided on the outer peripheral surface of the ice making cylinder 3 located sufficiently below the antifreeze outlet 12a.
It is a measured value when attached at 0 ° intervals. In FIG.
The horizontal axis indicates time, and time advances from right to left.
As can be seen from this temperature measurement result, the temperature value initially indicates 1 ° C., which is higher than 0 ° C., but the temperature sensor 19A,
19B sharply drops around time t1. Further, after about 5 minutes, the temperature of the temperature sensors 19C, 19D, 19E suddenly drops. And the temperature sensor 19F is about 5
Gradually decreases after a lapse of minutes. After that, when the refrigerator 13 that cools the antifreeze liquid 4 is stopped at time t3, the static ices 26 and 37 shown in FIG. 15 drop or melt, so the temperature rises and returns to the original temperature.

At this measured value, the temperature sensor 19F has a slightly later start time to return to the original temperature than the other sensors 19. The time when the pressure value measured in the upper part of the ice making cylinder 3 starts to rise is t2, and the pressure rapidly rises from this time t2.
That is, the ice making cylinder 3 is clogged with ice. The time at which the temperature sensor 19 reaches a temperature of −2 ° C., which is sufficiently lower than 0 ° C., is about 10 minutes before the temperature sensors 19A and 19B.

Therefore, with the output values of the temperature sensors 19A and 19B, the temperature decreases about 10 minutes earlier due to the increase of the water pressure in the upper part of the ice making cylinder 3 and the decrease of the water flow rate, and the ice clogging is detected in advance by this temperature decrease. can do.

Although the temperature sensors 19C, 19D and 19E can be detected in advance, the temperature sensors 19A and 19E
Not as early as B, but 2-4 minutes ago. Further, the temperature sensor 19F does not decrease to −2 ° C. in advance. This is because the static ice 26 adhering to the antifreeze solution discharge port 12a is not axisymmetric, is unevenly present, or has a distorted shape, and the uneven flow state of the antifreeze solution 4 is different.

That is, depending on the position of the temperature sensor 19, there are a position that can be detected sufficiently early and a position that cannot be detected, and there is a position that cannot be detected in advance. Therefore, if the temperature sensor 19 is provided only at one place, it may not be possible to perform advance detection. Therefore, the number of the temperature sensors 19 is plural in the circumferential direction,
When at least one of them has dropped to a certain temperature of 0 ° C. or lower, the ice making operation is stopped.

As a result, the ice clogging of the ice making cylinder 3 can be reliably detected in advance. It should be noted that the vertical direction may be provided at a plurality of locations, for example, as shown in FIG. 6, a plurality of locations may be provided in upper and lower two stages, which can detect the sign of ice clogging earlier.

Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, the ice making operation is performed in the first embodiment shown in FIG. 1, the second embodiment shown in FIGS. 2 to 4 and the third embodiment shown in FIGS. 5 and 6. When the measuring device 20 detects that the temperature value of the temperature sensor 19 has dropped to 0 ° C. or lower, the antifreeze liquid 4
The refrigerator 13 for cooling the ice is stopped to stop the ice making operation.

When the refrigerator 13 is stopped in this way, the antifreeze liquid 4 having a temperature lower than 0 ° C. is not ejected from the antifreeze liquid outlet 12a, so that the growth of the static ice 26 icing on the antifreeze liquid outlet 12a stops. In addition, ice cube 3
The growth of the static ice 37 that has landed on the inner wall of the plant also stops.

In the case of the first embodiment, the static ice 26 passes through the pipe 14f from the water pump 18 to the water 2 at 0 ° C. or more flowing to the ice making cylinder 3, and the refrigerator 13 which is stopped to pass through the pipe 14c. Touch the ice making cylinder 3
In the case of the third embodiment, the water 2 at 0 ° C. or more flowing from the water pump 18 to the ice making cylinder 3 through the pipe 14f and the antifreezing liquid 4 flowing to the ice making cylinder 3 through the pipe 14b without passing through the refrigerator 13 are stopped. The static ice 26 gradually melts because it is in contact with the antifreeze liquid 4 flowing to the ice making cylinder 3 through the freezer 13.

Further, the static ice 26 contains the antifreeze liquid 4 having a larger specific gravity than the water 2, and the water 2 and the refrigerator 13
Although not passed through, since it is pushed downward by the two types of antifreeze liquid 4, after a lapse of time, it is divided at a portion near the antifreeze liquid outlet 12a and falls. After that, some of the static ice 26 remaining in the antifreeze solution outlet 12a also melts and disappears completely. That is, the static ice 26 is removed. Further, the static ice 37 on the inner wall of the ice making cylinder 3 is also dropped or melted and removed. When the refrigerator 13 is operated again, normal ice making operation can be resumed.

Next explained is the fifth embodiment of the invention. In the fifth embodiment, the temperature sensor in the first embodiment shown in FIG. 1, the second embodiment shown in FIGS. 2 to 4 and the third embodiment shown in FIGS. 5 and 6 is used. 1
When the measuring device 20 detects that the temperature value of 9 has dropped to a certain temperature of 0 ° C. or lower, the valve 16a is closed and 0 ° C.
The ice making operation is stopped by preventing the lower temperature antifreeze liquid 4 from flowing from the refrigerator 13 to the pipe 14c.

By closing the valve 16a to prevent the antifreeze liquid from flowing from the refrigerator 13 to the pipe 14c in this way, the antifreeze liquid 4 having a temperature lower than 0 ° C. is not blown out from the antifreeze liquid outlet 12a, and the antifreeze liquid outlet 12a. The growth of the static ice 26 that has landed on the ice can be stopped.

Further, in the case of the first embodiment, the static ice 26 comes into contact with the water 2 of 0 ° C. or higher flowing from the water pump 18 to the ice making cylinder 3 through the pipe 14f, and the static ice 26 of the second and third embodiments is contacted. In this case, since the water 2 of 0 ° C. or more flowing from the water pump 18 to the ice making cylinder 3 through the pipe 14f is in contact with the frozen liquid 4 flowing to the ice making cylinder 3 through the pipe 14b without passing through the refrigerator 13, the static ice 26 is It gradually melts.

Further, since the static ice 26 contains the antifreeze liquid 4 having a larger specific gravity than the water 2, and is pushed downward by the water 2 and the antifreeze liquid 4, the static ice 26 is divided at a portion near the antifreeze liquid outlet 12a as time passes. Will be dropped. afterwards,
Some static ice left in the antifreeze outlet 12a
6 also melts and disappears completely. That is, static ice 2
6 is removed. Further, the static ice 37 on the inner wall of the ice making cylinder 3 is also dropped or melted and removed.
Then, when the valve 16a is opened again, normal ice making operation can be resumed.

On the other hand, when there are a plurality of ice making cylinders 3 in the ice making tank 1 or when there are a plurality of ice making cylinders 3 because there are a plurality of ice making tanks 1, the result is as shown in FIG. The number of the refrigerators 13 is not limited to one for convenience of size and cost, but one unit is used to send the cooled antifreeze liquid 4 to each ice making cylinder 3. The valve 16a for adjusting the flow rate of the antifreeze liquid 4 cooled by the refrigerator 13 is provided on the upstream side of the refrigerator 13 in the above-described embodiment, but in this case, the pipe 14c is provided depending on the number of the ice making tubes 3. The valves 16a are provided one by one between the branching point and the antifreeze outlet 12a.

In FIG. 11, reference numeral 35 denotes an antifreeze liquid discharge port 1
It is shown including a set from 2a to the antifreeze liquid recovery section 6. Then, only the valve 16a of the branch pipe connected to the ice making cylinder 3 that has detected the sign of ice clogging in advance is closed, and the sign of ice clogging is indicated.
Do not send the antifreeze liquid 4 only to the ice making cylinder 3 that has detected in advance .

In this way, the signs of ice blockage were detected in advance.
Since the antifreeze liquid 4 is not sent to the ice making cylinder 3, the cooling capacity can be effectively allocated to the other ice making cylinders 3 without wasting the cooling capacity of the refrigerator 13, thereby improving the cooling efficiency. be able to. What 's more, the signs of ice blockage
There is an advantage that the useless cooling capacity decreases as the pre-detection is faster.

Next explained is the sixth embodiment of the invention. 9 and 10 are schematic diagrams respectively showing a sixth embodiment of the present invention. The same parts as those in FIGS. 1, 2, 5, and 6 are designated by the same reference numerals and the description thereof will be omitted.

In the sixth embodiment, the temperature value detected by the temperature sensor 19 is input to the control device 28 as shown in FIG. 9, and it is detected that the temperature value has dropped to a certain temperature of 0 ° C. or less. Then, a valve 16a provided on the upstream side of the refrigerator 13 is given a closing signal.

In FIG. 10, the temperature value detected by the temperature sensor 19 is input to the control device 28, and when it is detected that the temperature value has dropped to a certain temperature of 0 ° C. or less, a stop command is issued to the refrigerator 13. It was something that was given.

By automatically stopping the ice making operation in this manner, the following effects can be obtained. That is, in the case of manual operation, the temperature value from the temperature sensor 19 is visually monitored, and when it is detected that the temperature value has dropped to a certain temperature of 0 ° C. or less, the operator switches off the refrigerator 13, Since it is necessary to close the valve 16a, it takes time for a human working operation, and the effect of pre-detection becomes small. By automating the series of operations, not only the time can be shortened, the operator is not burdened, but also the possibility of erroneous operation is eliminated, and highly reliable monitoring control can be performed. This is especially the case in a system with a large number of ice cubes 3.

Next, a seventh embodiment of the present invention will be described. FIG. 12 is a schematic diagram showing a seventh embodiment of the present invention. The same parts as those in FIGS. 1, 2, 5, and 6 are designated by the same reference numerals and the description thereof will be omitted.

In the seventh embodiment, as shown in FIG. 12, an ice storage tank 29 is provided in which the upper portion of the ice making tank 1 is communicated, and the sherbet-shaped ice 32 moved from the ice making cylinder 3 is stored in this ice storage tank 29. A water supply system for supplying the water 2 existing under the sherbet-shaped ice 32 stored in the ice storage tank 29 to the water pump 18 is configured.

In the ice heat storage device having such a structure, sherbet-like ice 27 is accumulated in the ice making tank 1, and when the ice 27 is accumulated to a position above the wall 30 between the ice making tank 1 and the ice storing tank 29. After passing through the wall 30, it passes through the flow path 31 between the ice making tank 1 and the ice storage tank 29 and falls into the ice storage tank 29. In this case, part of the water 2 may also be moved to the ice storage tank 29. Then, the ice 32 is stored in the ice storage tank 29.

Below the ice 32 in the ice storage tank 29, the water 2 formed by melting during the ice-melting operation is present. This water 2 is taken from the water intake 10 of the ice storage tank 29, and is made to flow into the inside from the top of the ice making cylinder 3 by the water pump 18.

During the ice making operation in such a state, if the temperature value input to the measuring device 20 from the temperature sensor 19 provided on the outer wall of the ice making cylinder 1 falls to a certain temperature below 0 ° C. The ice making operation is stopped as in the first to third embodiments.

In the ice heat storage device having the above structure, the sherbet-shaped ice 32 stored in the ice storage tank 29 is successively poured from above and is compressed by gravity.
Higher ice filling rate. As a result, the volume of ice storage portion and the amount of stored ice substantially with respect to the site area, that is, the amount of stored cold heat can be increased.

A technique may be introduced in which the ice 32 is dispersed and dropped so that the ice 32 does not concentrate in one place. Furthermore, by introducing a technique of installing a revolving door on the wall 30 and rotating the revolving door when the ice 27 is stored in the ice making tank 1 to some extent to transfer the ice 27 from the ice making tank 1 to the ice storing tank 29. Good.

Next explained is the eighth embodiment of the invention. FIG. 13 is a schematic view showing an eighth embodiment of the present invention, respectively, and the same parts as those in FIGS. 1, 2, 5, and 6 are designated by the same reference numerals and the description thereof will be omitted.

In the eighth embodiment, Japanese Patent Application No. 6-19633 is used.
Introduce the technology described in the issue. That is, as shown in FIG. 13, a transport pipe 33 for transporting a two-phase flow of water 2 and ice 32 to a predetermined location is connected to the downstream side of the ice making tank 1 and transported through this transport pipe 33 to flow down from the opening end. An ice heat storage water tank 34 for storing a two-phase flow of water 2 and ice 32 to be stored is provided.
Water is taken from the intake port 10 of the ice heat storage water tank 34, and is made to flow into the inside from the top of the ice making cylinder 3 by the water pump 18. In this figure, the antifreeze liquid collecting section 6 below the ice making cylinder 3 and the antifreezing liquid collecting section below the ice making tank 1 are integrated, but the antifreeze liquid 4 collected in this antifreezing liquid collecting section 6 is transferred to the antifreeze pump 15
The ice-making cylinder 3 is caused to flow in from the top. The ice making cylinder 3, the antifreeze liquid collecting part 6, the ice making tank 1 and the transfer pipe 33 are sealed and connected. Then, the temperature sensor 19 is provided in close contact with the outer wall of the ice making cylinder 3, and the temperature value of the temperature sensor 19 is input to the measuring device 20.

A portion 36 surrounded by a chain double-dashed line in the figure shows an ice making portion. Even in the ice heat storage device having such a configuration, when the temperature value input to the measuring device 20 from the temperature sensor 19 drops to a certain temperature of 0 ° C. or less, the same as in the first to third embodiments described above. Stop the ice making operation.

Since the ice-making water tank 1 is closed to the ice-storing water tank 34, the ice-cooling water tank 34 can be transported to a desired place while keeping a constant amount of cooling and heating even if the distance is long.

[0099]

As described above, according to the present invention, the symptom of the ice making cylinder is detected in advance before the ice clogging occurs, and the symptom is put into the coping routine, so that the reliability of the system is improved. In addition, when the antifreeze liquid to a plurality of ice making cylinders is cooled by one refrigerator, it is possible to provide an ice heat storage device capable of reducing waste of cooling capacity of the refrigerator and improving ice making efficiency. .

[Brief description of drawings]

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

FIG. 2 is a configuration diagram showing an outline of a second embodiment of an ice heat storage device according to the present invention.

FIG. 3 is a configuration diagram showing an outline of an upper portion of an ice making cylinder in the same embodiment.

FIG. 4 is a schematic view of an upper portion of an ice making cylinder showing an example different from FIG. 3 in the same embodiment.

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

FIG. 6 is a schematic configuration diagram showing an example different from FIG. 5 in the same embodiment.

FIG. 7 is a curve diagram showing an example of measurement results of the temperature sensor in the first to third embodiments.

FIG. 8 is a curve diagram showing an example of measurement results of a temperature sensor different from that of FIG. 7.

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

FIG. 10 is a configuration diagram showing an outline of an example different from FIG. 9 in the same embodiment.

FIG. 11 is a schematic view when there are a plurality of ice making cylinders.

FIG. 12 is a configuration diagram showing an outline of a seventh embodiment of an ice heat storage device according to the present invention.

FIG. 13 is a configuration diagram showing an outline of an eighth embodiment of an ice heat storage device according to the present invention.

FIG. 14 is a configuration diagram showing an outline of a conventional ice heat storage device.

FIG. 15 is a schematic view for explaining an ice clogging state of an ice making cylinder in the ice heat storage device.

FIG. 16 is an explanatory view of a configuration of an antifreeze jet nozzle provided on an upper portion of an ice making cylinder in a conventional ice heat storage device.

[Explanation of symbols]

1 ... Ice making tank, 2 ... Water, 3 ... Ice making cylinder, 4 ... Antifreeze liquid, 5 ... First antifreeze liquid collecting part, 6 ... Second antifreeze liquid collecting part, 7 ... Antifreeze pipe, 8 ... ... connecting part, 9 ... interface,
10 ... Water intake part, 11 ... Wire mesh, 12 ... Antifreeze spout nozzle, 12a ... Low temperature antifreeze spout, 12b ... Freezing prevention antifreeze spout, 12c ... Water spout, 13 ...
Refrigerator, 14a-14d, 14f ... Piping, 15 ... Antifreeze pump, 16a-16c ... Valve, 17a-17c ...
... Flowmeter, 18 ... Water pump, 19 ... Temperature sensor, 2
0 ... Measuring device, 21 ... Inner tube, 22 ... Outer tube, 23 ...
… Low-temperature antifreeze pipe, 24 …… Antifreeze antifreeze pipe, 25
…… Wall of ice making cylinder 3, 26 …… Static ice, 27 ……
Sherbet-like ice, 28 ... Control device, 29 ... Ice storage tank, 30 ... Wall, 31 ... Flow path, 32 ... Sherbet-like ice, 33 ... Transport pipe, 34 ... Ice heat storage water tank, 35 ...
... A set from the nozzle low temperature antifreeze outlet 12a to the antifreeze recovery part, 36 ... Ice making part, 37 ... Static ice.

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-7-71846 (JP, A) JP-A-6-109199 (JP, A) JP-A-5-280769 (JP, A) JP-A-7- 229637 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25C 1/00-1/12 F25C 1/16-5/18 F24F 5/00

Claims (4)

(57) [Claims] 1. An ice-making cylinder which is provided vertically and which produces fine ice particles by allowing water and water-insoluble water having a specific gravity lower than 0 ° C., which has a specific gravity higher than that of water, to flow in from an apex portion through an antifreeze jet nozzle. And, an antifreeze liquid recovery part that collects the antifreeze liquid that flows down together with water and ice particles at the bottom of this ice making cylinder, and water that flows down the ice making cylinder provided in communication with the ice making cylinder and the antifreeze liquid collecting part, respectively, and An ice-making tank that raises ice particles, a water circulation system that causes water taken from the intake port of this ice-making tank to flow into the interior from the top of the ice-making cylinder by a water pump, and an antifreeze liquid that collects the antifreeze liquid in the antifreeze liquid collection unit. An antifreeze circulation system which flows into the interior from the top of the ice making cylinder by a pump, and a refrigerator provided in this antifreeze liquid circulation system, and the ice making cylinder below the antifreeze liquid outlet of the antifreeze liquid injection nozzle With the outer peripheral wall surface is adhered a plurality of temperature sensors are provided in the circumferential direction of these temperature sensors
The outer wall of the closely adhered ice making cylinder is covered with a heat insulating material, and the signals from the respective temperature sensors are input to the control device so that the antifreeze liquid is biased.
A temperature at which the temperature of the inner wall surface of the ice making cylinder is 0 ° C. or less due to the flow.
Of the temperature sensors
The ice heat storage device characterized in that the ice making operation is stopped by the output of the control device when at least one is detected. 2. An ice making cylinder which is provided vertically and which produces fine ice particles by allowing water and water-insoluble water having a specific gravity larger than that of water, which is lower than 0 ° C., to flow in through an antifreeze jet nozzle. And, an antifreeze liquid recovery part that collects the antifreeze liquid that flows down together with water and ice particles at the bottom of this ice making cylinder, and water that flows down the ice making cylinder provided in communication with the ice making cylinder and the antifreeze liquid collecting part, respectively, and An ice making tank that raises ice particles, an ice storage tank that is provided in communication with the upper part of the ice making tank and stores the ice that has moved from the ice making tank, and the water taken from the intake port of this ice storage tank by the water pump A water circulation system that flows into the interior from the top of the cylinder, an antifreeze circulation system that causes the antifreeze liquid collected in the antifreeze recovery unit to flow into the interior from the top of the ice making cylinder by an antifreeze pump, and this antifreeze circulation system is provided. A was refrigerator, the antifreeze antifreeze air outlet from the lower the injection nozzle is brought into close contact with a plurality of temperature sensors in the outer peripheral wall surface of the ice making cylinder disposed in the circumferential direction <br/> Rutotomoni, these temperature sensors The outer wall of the ice cube
Covered with a heat insulating material, and the input to the control unit the signals from the temperature sensors, among more the ice making tube to drift of the antifreeze
Before the fact that the wall temperature has dropped to a certain temperature below 0 ℃
The ice heat storage device characterized in that the ice making operation is stopped by the output of the control device when at least one of the plurality of temperature sensors is detected. 3. An ice making cylinder which is provided vertically and which produces fine ice particles by allowing water and water insoluble from the crown and having a specific gravity larger than water and having a temperature lower than 0 ° C. to flow in through an antifreeze jet nozzle. And an antifreeze liquid collecting part that collects the antifreeze liquid that flows down together with water and ice particles in the lower part of the ice making cylinder, and the water that flows vertically down the ice making cylinder that is in communication with the ice making cylinder and the antifreeze liquid collecting part, respectively. An ascending pipe that raises the ice particles, a conveying pipe that is connected to the downstream side of the ascending pipe and that conveys the two-phase flow of water and ice particles to a predetermined location, and is conveyed through this conveying pipe and flows down from the opening end side. An ice heat storage water tank that stores a two-phase flow of water and ice, a water circulation system that causes water taken from the intake port of the ice heat storage water tank to flow into the interior from the top of the ice making cylinder by a water pump, and the antifreeze liquid recovery unit Recovered in An antifreeze liquid circulation system that causes an antifreeze liquid to flow into the interior of the ice making cylinder from the top portion of the ice making cylinder by means of an antifreeze liquid pump, and a freezer provided in this antifreeze liquid circulation system, and the antifreeze liquid jet nozzle of the antifreeze liquid injection nozzle below the ice making cylinder A plurality of temperature sensors are closely attached to the outer peripheral wall in the circumferential direction, and the outer wall of the ice making cylinder is closely attached to these temperature sensors.
Is covered with a heat insulating material, and a signal from each of the temperature sensors is input to the control device, and due to the drift of the antifreeze liquid,
Check that the temperature of the inner wall has dropped to a certain temperature below 0 ° C.
An ice heat storage device, characterized in that when at least one of the plurality of temperature sensors detects, the ice making operation is stopped by the output of the control device. 4. The ice heat storage device according to claim 1 or 2, wherein a plurality of the ice making cylinders are provided, and the antifreeze circulation system is branched according to the number of the ice making cylinders, and each of the branch points leads to the above-mentioned each An ice heat storage device characterized in that a valve for adjusting a flow rate of the antifreeze liquid is provided between the antifreeze liquid outlet of the ice making cylinder.