JPH11201601A - Thermal storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve thawing performance at the time of heat radiation, resolve the situation wherein ice is hung up and hardly falls at the time of ice removal from an ice-making plate and solve the problem that detached ice is apt to stay in a lower part of an ice making section and is difficult to diffuse into a tank, in a thermal storage system. SOLUTION: Water in a tank 52 is guided to a radiator 12 through a pipe 8B, a valve 15 and a pipe 13C by a pump 6 at the time of radiation and then is sprayed into the tank 52 through a manifold 3 and a spray pipe 2. By these steps, ice 51 in the tank 52 is thawed and spray water is cooled. The cooled water is made to flow into the radiator 12 again by the pump 6. Part of the water 50 is returned to the tank 52 via a pipe 18A from the pump 6. The ice 51 is stirred by this water so that thawing speed is accelerated. The ice 51 is relieved from staying and being stacked under an ice making section 1. When ice growing on an ice making plate is detached, hot gas is made to flow in every other ice making plate to detach the ice and detaching ice density is reduced so as to prevent the ice from being hung up between the neighboring ice making plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice making plate or an ice making pipe, in which flowing water is flown into or out of an ice making pipe in the form of a falling liquid film to freeze the ice.
(Referred to as a tank).

[0002]

2. Description of the Related Art A known example close to the present invention is disclosed in
There is an example described in -230035. During cold storage, the water-flow heat exchanger is operated as an evaporator, and water is conveyed to the water-flow heat exchanger by a water pump to freeze ice on the surface of the heat exchanger. It stores cold water and operates the water-flow type heat exchanger as an evaporator at the time of heat radiation, drops the heated return water from the load side into the upper part of the water-flow type heat exchanger, drops it into the tank, and removes the ice in the tank. The chilled water is made while melting, and it is transported to the load side to radiate heat.

[0003]

The amount of water sent to the water-flow type heat exchanger often differs between cold storage and load cooling (radiation), and the flow rate is generally lower during heat release than during cold storage. Is often good. For this reason, at the time of heat radiation, the speed of flowing water flowing between the ices in the tank becomes slow, and the deicing property may be deteriorated.

[0004] The above-mentioned known example does not disclose a method for improving the thawing speed by injecting a part of water supplied from a water supply pump into the tub in order to increase the thawing speed of ice in the tub. Also, when the ice generated by the water-fall type heat exchanger (ice making plate) is released, it is released because ice caught between the ice making plates does not drop because it interferes with the detached ice of the adjacent ice making plate. It does not disclose how to do so.

FIG. 18 shows the structure of a conventional heat storage system, in which a heat storage tank 52 containing water 50 and ice 51 is provided.
An ice making unit 1 including a plurality of ice making plates disposed above the heat storage tank 52, a pump 6 for taking water from the heat storage tank 52 and sending the water to the ice making unit 1 through the pipe 8. And a load pump 14 for taking water from the heat storage tank 52 and sending the water to the radiator (cooling load) 12 via the pipe 13. In general, the flat-type heat storage tank 52 is often provided with the ice making unit 1 at one corner thereof, and the ice dropped from the ice making unit 1 piles up below the ice making unit 1 to hinder the falling of the ice 51a from the ice making unit 1. Sometimes. Well-known examples cut this mountain,
It also does not disclose a method for uniformly dispersing ice in the tank.

[0006] Further, the ice that has begun to detach from the ice making section 1 generally remains large in shape, but does not disclose a method for crushing the ice to an appropriate size.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat storage system for making ice using an ice making plate and storing the ice with the ice, thereby increasing the speed of thawing at the time of heat radiation, and making the ice released from the ice making plate during ice making and cold storage. To prevent clogging in between, prevent piles of ice below the ice making section from hindering the fall of ice detached from the ice making plate, and reduce the size of the ice detached from the ice making plate to an appropriate size. Crushing, making it possible to crush.

[0008]

Means for Solving the Problems In many cases, the total amount of water flowing down to the ice making plate during cold storage and the amount of water flowing to the load side during heat radiation are different. Generally, the flow rate of the latter is often smaller than the flow rate of the former, and the deicing property is deteriorated. In order to solve this, the pump for ice melting and the pump for ice making are simultaneously driven to increase the substantial flow rate in the tank and increase the ice melting speed.

[0009] Further, when the thawing speed is low, the system lacks energy saving properties. In such a case, the amount of water sprayed from the water spray mechanism provided above the ice making plate is reduced. As this method, an inverter control type pump is used, and its rotation speed is controlled.

[0010] In order to further accelerate the ice melting speed, a part of the water supply is poured into an ice storage tank and the ice and water are stirred to increase the ice melting speed during heat radiation. At this time, if necessary, increase the total water supply.

When the ice formed on the surface of the ice making plate is separated from the ice making plate (hereinafter referred to as "de-icing"), the time for flowing the heat medium into the ice making plate is shifted, and the heat medium is temporally changed in the adjacent ice making plate. De-ice alternately. In other words, when deicing with a certain ice making plate, keep the non-deicing state without flowing the heat medium to the adjacent ice making plate, thereby lowering the deicing density in the ice making part and changing the ice between the ice making plates. To prevent snagging.

In a flat type heat storage tank, an ice making unit is arranged above a part of the tank, and ice is easily piled up below the ice making unit. To solve this, a portion of the water pressurized by the pump is diverted and poured into a pile of ice to break it.

If the shape of the ice deiced from the ice making plate is large, the ice is not smoothly transferred from the ice making unit to the inside of the tank.
Ice clogs between ice-making plates, preventing the next ice from falling. As a countermeasure, a powerful jet nozzle and a powerful pump (pressure 10
0kg / cm ² ~1000kg / cm ² or so) using, thereby creating a jet stream of water, crushing it to inject a jet stream to a large withdrawal ice.

[0014]

FIG. 1 is a configuration diagram of a first embodiment of a heat storage system according to the present invention. The illustrated heat storage system has a tank 52 for storing ice 51 and water 50, an ice making section 1 including a plurality of ice making plates 1a to 1g disposed above the tank 52, and is disposed substantially horizontally above the ice making plates 1a to 1g. Ice making plates 1a ~
A plurality of watering tubes 2 configured to water 1 g
a to 2 g, a pipe 8 having one end connected to the bottom of the tank 52
A, a pump 6 for watering, which is a first water supply means disposed with the suction side connected to the other end of the pipe 8A, a valve 7 connected to an outlet side of the pump 6 via a pipe 8B, and a valve 7 outlet. The pipes 4a to 4g connecting the manifolds 3 and the manifold 3 connected to the water pipes 2a to 2g via valves 5a to 5g, and one end below the liquid surface of the tank 52 are connected. Connected pipe 13A, pipe 13A
A pump 14 for load, which is a second water supply means disposed with the suction side connected to the other end of the pump, and a pipe 1 on the output side of the pump 14
3B, the load-side radiator 12 and the radiator 1
Valve 1 connected to the outlet side of 2 via pipe 10A
1, a pipe 10B that connects the outlet side of the valve 11 and the pipe 8B, and a pipe 11 that connects the pipe 10B and the pipe 13B.
a, an inverter 90 for driving the pump 6, and an inverter 91 for driving the pump 14. The heat storage device includes a refrigeration cycle that supplies and circulates a refrigerant and a heat medium to the ice making plates 1a to 1g, but is not illustrated.
The same applies to the following embodiments.

During ice making (when storing heat), the tank 52 and the water pipe 2
The pump 7 is opened by opening the valve 7 between the pipes 8B and 9 connecting the manifold 3 for use. As a result, the water 50 in the tank 52 is sent to the manifold 3 through the pipes 8A and 8B and the pipe 9, and
ice making plates 1a-1 through sprinklers 2a-2g through a-4g
g. This water is partially frozen while flowing down the surfaces of the ice making plates 1a to 1g. Ice plate 1a-1g
A refrigerant and a heat medium are alternately flowed into the inside from the outside. An antifreeze such as ethylene glycol is used as a refrigerant / heat medium at -7 ° C.
It is also possible to use one that has been cooled to a certain degree and one that has been heated to about 30 ° C., and alternately flow these by switching a valve. Alternatively, after chlorofluorocarbon of about −7 ° C. is flowed for a certain period of time, fluorocarbon heated to about 30 ° C. may be flowed. One example of the latter cycle is shown in FIG. Ice frozen on the ice making plates 1a to 1g by such a method is deiced at predetermined time intervals. This ice falls into the tank 52 and is stored.

If the defrosting speed can be low during heat radiation, the pump 6 is stopped and the valve 7 is closed,
The valve 11 of the pipe connected to the pipe 9 is opened, and the pump 14 that draws water from the tank 52 and sends the water to the radiator 12 on the load side is driven, and the water 50 in the tank 52 is passed through the radiator 12 from the pipes 13A and 13B. Dissipate that cold heat. The water radiated by the radiator 12 is then supplied to the pipe 10A and the valve 1
1, pipe 10B, pipe 9, manifold 3, pipe 4
The water is sprinkled from the water sprinkling pipes 2a to 2g through a and returned into the tank 52. In general, the amount of water supplied during heat radiation is smaller than the amount of water sprayed during ice-making, so that water sprayed from the water pipe 2 is
The water does not collide with a to 1 g, and therefore falls directly into the tank 52 from the sprinkler pipes 2 a to 2 g. The water sprinkling pipes 2a to 2g extend substantially horizontally above the tank 52 in parallel with each other, and water sprinkling holes formed obliquely downward are arranged in the longitudinal direction. For this reason, when the amount of water supplied to each water pipe is small, it is not evenly distributed in the water pipe longitudinal direction,
At times, it may fall to the position where the pipe 4 is connected,
It is difficult to uniformly thaw the ice in the tank 4.

For this reason, the valve 5a provided in the pipes 4a to 4g for communicating the water pipes 2a to 2g and the manifold 3 is provided.
Close every other お き 5 g, thereby reducing the number of watering tubes to which water is supplied. The flow rate of the water flowing out of the sprinkling holes is increased by reducing the number of sprinkler pipes to which the water is supplied. create. Since the entire surface of the ice making plate having a high water injection speed is uniformly wetted by the falling liquid film, the water flow falls uniformly toward the tank from the entire length of the ice making plate (perpendicular to the paper). Therefore, water is uniformly sprayed around the ice making plate. In FIG. 1, a black valve 5 indicates a closed state, and a white valve 5 indicates an open state.
As a result, the sprinkling points flowing down into the tank 52 as a whole are made uniform, and the thawing speed is kept high.

When the amount of ice stored during the day falls, the radiator 12
In order to perform the following ice making while radiating heat, the pump 6 is driven in addition to the pump 14, and the low-temperature cold water 50 in the tank 52 is
The water is mixed with warm water returning from the pipe 10B to lower the temperature, and water is sprinkled from the water pipes 2a to 2g onto the ice making plates 1a to 1g to make ice. At this time, ice making / deicing is performed by alternately flowing a refrigerant and a heat medium from the refrigeration cycle to the ice making plates 1a to 1g. The pump 6 is also driven in conjunction with the pump 14 when it is desired to increase the ice thawing speed of the ice in the tank 52 and obtain low-temperature cold water other than in the case of performing the following ice making. Pipe 13B and pipe 10
A pipe 10c with a valve 11a may be provided between B to increase the total amount of water supplied by the pump 14 and increase the amount of water injected from the sprinkler pipes 2a to 2g. At this time, valves 5a to 5g
It is good to open all. In such an operation, the pump 6 need not be driven. The pumps 6 and 14 are controlled by using inverters 90 and 91, and the amount of flowing water can be changed as needed. Alternatively, electric valves may be used as the valves 5a to 5g, and the amount of flowing water may be changed by changing the opening degree.

FIG. 2 is a block diagram of a second embodiment of the present invention. This is an embodiment in which one pump 6 sprays water on the ice making plates 1a to 1g also during ice making and heat radiation. This embodiment is different from the first embodiment in that pipes 13A, 13B, 10c, valve 11a and pump 14
In place of the pipe 8B and the radiator 12
5 in that a pipe 13c communicating with the pipe 13 is provided. The other configuration is the same as that of the first embodiment, so the same reference numerals are given and the description is omitted.

Adjustment of the amount of water supply during ice making and heat radiation is performed by valves 7 and 15, respectively. Pump 6
The number of revolutions may be controlled by an inverter 90 provided to adjust the flow rate. At the time of ice making (at the time of heat storage), the pump 6 is driven to send the water 50 in the tank 52 to the manifold 3 via the pipe 8B, the valve 7 and the pipe 9, and
Water is sprinkled from the sprinkler pipes 2a to 2g via a to 4g, and the water is allowed to flow down to the ice making plates 1a to 1g to freeze it. Ice making / deicing is performed by alternately flowing a refrigerant and a heat medium into the ice making plates 1a to 1g, and the ice is dropped into the tank 52 to store heat.

At the time of heat radiation, the pump 6 is also driven, the ice 51 in the tank 52 is thawed, the cold water is sent into the radiator 12 through the valve 15 and the pipe 13c, and the returned water is sent through the pipe 10A and the valve. 11, return to the inside of the tank 52 via the pipe 10B, the pipe 9, the manifold 3, and the pipes 4a to 4g,
Water is supplied along the same route as before. At the time of this heat radiation, the valve 7 is opened, and a part of the water supply of the pump 6 is sent to the manifold 3 and the sprinkler pipes 2a to 2g via the pipe 8B and the pipe 9,
As a whole, the amount of flowing water into the tank 52 is increased, so that the thawing performance is kept good. In this operation,
Water may be pre-cooled by flowing a coolant into the ice making plates 1a to 1g, or a part thereof may be frozen. At this time, the ice frozen on the ice-making plate may be directly attached to the ice-making plate, and the running water may be pre-cooled while being appropriately thawed with the running water. Alternatively, deicing may be performed intermittently and dropped into the tank 52 for deicing. The pump 6 is provided with an inverter 90 so that the amount of water supply can be changed as required.

FIG. 3 is a block diagram of a modification of the embodiment of FIG. This embodiment is different from the second embodiment in that a valve 17 is provided on a pipe 8A, and a pipe 18 having a valve 16 is provided by branching off to a pipe 8A downstream of the valve 17. 18 is connected below the upper surface of the tank 52, and the downstream end of the pipe 10B is connected to the end of the manifold 3 instead of connecting to the pipe 9 on the side opposite to the side where the pipe 9 is connected. The other configuration is the same as that of the first embodiment, so the same reference numerals are given and the description is omitted.

At the time of ice making, the valve 17 is opened, the pump 6 is driven, and water is poured into the ice making plates 1a to 1g via the pipe 8B, the valve 7, the manifold 3, and the water spray pipes 2a to 2g. Further, in this embodiment, the outlet side of the radiator 12 is connected via the valve 11 to the opposite side of the manifold 3 from the valve 7. This facilitates the layout of the piping in the piping work.

At the time of heat radiation (at the time of thawing), the valve 17 is closed,
Open the valves 16, 15, and 11 and open the pump 6.
To drive the water 50 in the tank 52 to the radiator 12, and to sprinkle the pipes 2a to 2g through the pipe 8B and the valve 7.
Water is poured into the ice making plates 1a to 1g. Since the ice 51 in the tank 52 is floating above the tank 52 in this manner, if the water intake pipe 18 is provided above the tank 52, low temperature water can be easily taken.

FIG. 4 is a block diagram of a third embodiment of the present invention. This embodiment differs from the embodiment of FIG. 3 in that the valve 17 is not provided, and that the downstream end of the pipe 18 is connected to the pipe 8B instead of being connected to the pipe 8A. The other configuration is the same as that of the embodiment of FIG. 3 and the same reference numerals are given and the description is omitted. This is because, during heat release, a part of the water sent by the pump 6 is transferred to the pipe 1
8. Returning the water to the upper part of the tank 52 via the valve 16 and sending the water between the ices 51 in the upper part of the tank 52 to make the water 50 and the ice 51 in a mixed-phase flow so as to improve the deicing property. It is. This also alleviates the accumulation of ice separated from the ice making plate under the ice making unit 1 to form a pile. That is, the ice 51 is uniformly dispersed in the water 50 in the tank 52.

FIG. 5 is a block diagram of a modified embodiment of FIG.
The difference between this embodiment and the embodiment shown in FIG. 4 is that a pipe 21A is provided which branches off to a pipe 13c on the downstream side of the valve 15 via a valve 20A.
2 is that it opens below the upper water surface at a position opposite to the position where the pipe 16 is connected. Other configurations are the same as those of the embodiment of FIG. 4, and therefore, the same reference numerals are given and the description is omitted.

A part of the water supplied by the pump 6 is
The water is injected into the upper part of the tank 52 through the
The water is supplied to the radiator 12 and the pipe 21 through the pipe 13 through the pipe. Since the water pressurized by the pump 6 is sent into the tank 52 through the pipes 18 and 21, the agitation of the water 50 and the ice 51 is improved, and the thawing performance is improved. Flows into the radiator 12.

FIG. 6 is a block diagram of a modified embodiment of FIG.
This embodiment is different from the first embodiment shown in FIG. 1 in that a valve 20A is used instead of the pipe 10c via the valve 11a.
And a pipe 21B via a valve 20B are branched and connected to a pipe 13C, and the downstream ends of both are arranged so as to open at positions facing each other below the upper water surface of the tank 52. That is the point. The other configuration is the same as that of the embodiment of FIG. 1 and the same reference numerals are given and the description is omitted.

In this case, a part of the water supply from the pump 14 is injected from the pipe 13B into the tank 52 through the pipe 21B via the valve 20B, and the rest is supplied from the pipe 13B into the radiator 12 and from the pipe 21A into the tank 52. Things. Further, in this embodiment, operation different from the embodiment of FIGS. 1 to 5 can be performed. For example, the pump 6 is driven at the time of heat release, and a part of the water is supplied through the pipe 8B, the valve 7, and the pipe 9, the manifold 3, and the ice making plate 1 through the sprinkling pipes 2a to 2g.
Water is poured into a to 1 g to perform a cold water production operation and a follow-up ice making operation. On the other hand, the remaining water can be radiated by the radiator 12 through the pipe 10B, the valve 11, and the pipe 10A, and then returned to the tank 52 via the pipe 13B, the pipe 21A, and the valve 20A. Watering pipes 2a-2g and ice-making plate 1a-
Since the water is widely sprayed into the tank 50 via 1 g and via the pipe 21A, the deicing property is improved. When such an operation is performed, the valve 20B is closed, and the driving of the pump 14 is also stopped. To simplify the system, use valve 2
OB and the pump 14 may be removed.

FIG. 7 is a block diagram of a fourth embodiment of the present invention. In particular, this embodiment shows a method for deicing ice formed on an ice making plate. This embodiment is different from the first embodiment shown in FIG. 1 in that a pipe 10 having a valve 11A interposed is provided.
C, the downstream end of the pipe 10B is connected not to the pipe 9 but to the end opposite to the connection end of the pipe 9 of the manifold 3, and the number of ice making plates is simplified for simplification of the drawing. 5
That is, the number of pipes 4 and the number of valves 5 are reduced accordingly. A low-pressure receiver 73 for storing the refrigerant 82 and a pipe 7
9, a compressor 70 having a suction side connected thereto, and a compressor 70
Condenser 71 connected via a pipe 78 to the discharge side of
A high-pressure receiver 72 connected to a liquid-phase part of the condenser 71 via a pipe 76 for storing a refrigerant 82; and a liquid-phase part of the high-pressure receiver 72 and a gas-phase part of the low-pressure receiver 73.
6, a pipe 77 that communicates via a pressure reducing mechanism 75, and a liquid pump 74 having a suction side connected to a liquid phase portion of the low-pressure receiver 73.
A pipe 80 connected to the discharge side of the liquid pump 74;
Pipes 87a to 87 that connect the pipe 80 to the inlets of the refrigerant channels of the ice making plates 1a to 1e via valves 84a to 84e.
e and the pipe 8 connected to the gas phase of the high-pressure receiver 72
3, pipes 87a to 87e and pipe 83 between valves 84a to 84e and ice making plates 1a to 1e are connected to valves 85a to 85e.
Pipes 88a to 88e connected to each other via a pair 85e
And a pipe 81 connected to the gas phase of the low-pressure receiver 73
An example of a refrigeration cycle 100 configured to include refrigerant pipe outlets of the ice making plates 1a to 1e and pipes 89a to 89e communicating the pipes 81 is shown.

In the system having the above-described structure, the pump 6 is driven at the time of ice making, and water in the tank 52 is injected into the ice making plates 1a to 1e through the manifold 3 and the water sprinkling pipes 2a to 2e via the pipe 8B and the valve 7. At the time of defrosting, the pump 14 is driven to supply water in the tank 52 to the pipe 13B, the radiator 12,
The ice 51 is thawed through the pipe 10A, the valve 11, and the pipe 10B, and further returned to the tank 52 via the manifold 3 and the water sprinkling pipes 2a to 2e. Refrigerant (eg, chlorofluorocarbon) 82 compressed by the compressor 70 enters a condenser 71 through a pipe 78, and liquefies by releasing heat of condensation therein. The liquid refrigerant 82 flows through a pipe 76 into a high-pressure receiver 72. Enter.
The liquid refrigerant 82 is adiabatically expanded in the pressure reducing mechanism 75 provided in the pipe 77 to a low temperature, and the low pressure receiver 73
Go inside. The refrigerant vapor in the low-pressure receiver 73 is
Returns to the compressor 70 and repeats the same cycle as before.

During ice making, the refrigerant 82 in the low-pressure receiver 73
Is connected to a valve 84a by a pump 74 through a pipe 80.
８４84e to the refrigerant flow paths in the ice making plates 1a〜1e, and then return to the low pressure receiver 73 via the pipe 81. Thereby, the water 50 sprinkled on the ice making plates 1a to 1e is frozen. When detaching the ice from the ice making plates 1a to 1e, the high-temperature refrigerant vapor (hot gas of Freon) in the high-pressure receiver 72 passes through the pipe 83 and enters the ice making plates 1a to 1e through the valves 85a to 85e. After being introduced, the ice making plates 1a to 1e are heated and de-iced. In such an operation, the valves 84a to 84e on the low pressure receiver side,
The valves 85a to 85e on the high pressure receiver side need to be opened and closed alternately.

Generally, the gap between the ice making plates 1a to 1e is narrow, but there is a possibility that ice falling between the ice making plates will be caught and clogged between the ice making plates and will not fall down. For this, 1
During the deicing operation on a single ice making plate, the adjacent deicing plate is preferably left in a non-deicing operation state.

FIG. 8 shows an operation mode of the ice making / deicing cycle of the ice making plates 1a to 1g. In (1), in the first deicing state, a heating medium is flowed through 1a and 1g at both ends of the ice making plate to deicing. At time (2), 1b and 1f are deiced, and at time (3), 1c and 1e.
And finally 1d. This way,
At the time of deicing one ice making plate, the adjacent ice making plates are not in the de-icing state, and ice does not interfere with each other and get caught between the ice making plates.

FIG. 9 schematically shows the course of deicing in FIG.

FIG. 10 schematically shows the process of deicing in a direction completely opposite to that of FIG. 9, wherein 1d is deicing in the first (1), 1c and 1e in the next (2), and (3). Then 1b and 1
f, the last (4) shows an operation method in which 1a and 1g defrost and finish.

FIG. 11 shows that in the first case (1), 1a, 1c, 1
e and 1g are deiced, and in (2), 1b, 1d and 1f are deiced. Even in such a method, the adjacent ice making plates are not simultaneously in the deicing state, and the clogging between the ice making plates can be avoided. The operation method of FIG. 11 requires a shorter deicing time as a whole than the method of FIGS.

FIG. 12 is a block diagram of a fifth embodiment of the present invention. The illustrated device is a tank 5 for storing ice 51 and water 50.
2. A plurality of ice making plates 1a to 1g arranged above the tank 52
An ice making unit 1 comprising: a pipe 8A having one end connected to the bottom of a tank 52; a pump 6 for water sprinkling, which is a first water supply means disposed with the suction side connected to the other end of the pipe 8A;
65 connected to the outlet side of the ice via a pipe 8B, pipes 9 and 8 connecting the outlet side of the valve 65 and the ice making unit 1
B, a pipe 63 opening below the upper surface of the tank 52 below the ice making unit 1, a valve 61 interposed in the pipe 63, and a pipe 8B. , A pipe 62 whose downstream end is located near the water surface of the tank 52 below, a valve 60 interposed in the pipe 62, a nozzle 64 attached to the downstream end of the pipe 62, and one end opened to the liquid phase portion of the tank 52. Pipe 67, pipe 6
7, a strong pump 68 having a suction side connected to the other end, and a tank 52 connected to the discharge side of the strong pump 68 and below the ice making section 1.
67 and pipe 6 whose downstream ends are located near the water surface
7, a strong jet nozzle 69 attached to the downstream end of the pipe 67, a pipe 13A having one end connected to the bottom of the liquid phase portion of the tank 52 opposite to the pipe 8A, and a pipe 13A. A pump 14 for load, which is a second water supply means disposed with the suction side connected to the other end, a radiator 12 on the load side connected to an outlet side of the pump 14 via a pipe 13B, One end is connected to the outlet side, and the other end is configured to include a pipe 10 </ b> A that opens above the water surface of the tank 52. The ice making section 1 in the above description includes the manifold 3, the pipes 4a to 4g, the valve 5a shown in FIG.
５5 g, including sprinkler pipes 2aａ2g.

When the tank 52 is a large flat type heat storage tank, the ice making section 1 is generally placed in a part above the ice making section. At this time, the deicing 51a tends to pile up below the ice making unit 1, so that the next ice cannot fall below the ice making unit 1 after a lapse of time. For this reason, a pipe 62 having a valve 60 is provided by branching to the pipe 8B, and a nozzle 64 is attached to the end of the pipe 62, and a part of the water supplied by the pump 6 is jetted to a portion where the deicing 51a has formed a mountain to cut the mountain. . It is also effective to inject water from a pipe 63 provided with a valve 61 disposed below the water surface above the tank 52. In this embodiment, a powerful pump 68 and a powerful jet nozzle 69 are provided. The water 50 in the tank 52 is sucked through a pipe 67, and the valve 66 is opened so that the powerful jet nozzle 69 can jet the deiced water 51a from the powerful jet nozzle 69. Has also become. This is because the deicing falling from the ice making unit 1 is large in the shape of a plate,
Particularly in the case where the jet nozzle is long in the vertical direction,
Jets a strong water stream from the surface and de-ices by a jet stream.
1a is crushed so that it can be easily dropped into the tank 52. In this way, deicing 5
It is possible to alleviate the state in which 1a is clogged and cannot be dropped. The jet nozzle 69 may cut the flat deicing 51a while moving it as needed.

FIG. 13 is a block diagram of a modification of the embodiment of FIG. This embodiment is different from the embodiment of FIG.
Instead of the pipe 62 with the valve 60 interposed and the nozzle 64 mounted thereon, a pipe 67a branched to the pipe 67 on the upstream side of the valve 66 and having the valve 66a interposed is provided.
Another strong jet nozzle 69a is provided at the tip of 7a, and a strong jet nozzle 69 and a strong jet nozzle 69 are provided.
a is arranged at a position facing each other. The other configuration is the same as that of the embodiment of FIG. 12, and the same reference numerals are given and the description is omitted. The powerful jet nozzle 69 and the powerful jet nozzle 69a are arranged at positions opposing each other with the deicing 51a below the ice making unit 1 sandwiching the mountainous portion, and the deicing 51a that has fallen from the ice making unit 1 is It is configured to cut from both directions by the jet water jet to be jetted.

FIG. 14 is a view showing a modification of the embodiment of FIG. 13, and is a top view of the ice making section 1. FIG. This embodiment is different from the embodiment of FIG. 13 in that a plurality of strong jet nozzles (69, 69a, 69b, 69b, 69b, 69b, 69c, 6
9d, 69e). In this embodiment,
By arranging the powerful jet nozzles in this manner, flat deicing falling from the ice making section 1 is crushed in a short time.

FIG. 15 shows an example of the shape of the nozzle portion of the powerful jet nozzle 69. In this example, the nozzle portion 92 of the strong jet nozzle 69 is configured so that water is jetted from one linear opening in a planar manner.
1a is easily cut into a line.

FIG. 16 is a perspective view of a modified example of the nozzle shape shown in FIG. The illustrated nozzle portion 92 has a cross-shaped opening.

FIG. 17 is a perspective view of a modified example of the nozzle shape shown in FIG. The illustrated nozzle portion 92 has a shape having an annular opening.

By changing the shape of the opening of the nozzle portion 92 in this manner, the deicing 51a is crushed into a desired shape, and the tank 52 is filled with ice at a high density. Further, the jet water stream jetted from the strong jet nozzle 69 may not be jetted continuously but jetted in a pulse shape. Also, the fuel may be rapidly injected after a certain time. This saves energy as a whole, and can cut ice efficiently.

It goes without saying that the features having the features described in each embodiment of the present invention can be used in combination with other embodiments.

[0047]

As described above, according to the present invention, (1) the speed of defrosting ice in the tank is increased, and water intake close to 0 ° C. can be obtained, and (2) the energy saving of the pump is improved. (3) When deicing from the ice making plate, the ice that has fallen into the tank from the ice making part due to interference with the ice detached from the adjacent ice making plate is mitigated. (5)
In addition, the large ice dropped from the ice maker was crushed to an appropriate size, and the dispersibility in the tank was improved, so that it became practical and convenient.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of a heat storage system of the present invention.

FIG. 2 is a configuration diagram of a second embodiment of the heat storage system of the present invention.

FIG. 3 is a configuration diagram of a modified example of the embodiment in FIG. 2;

FIG. 4 is a configuration diagram of a third embodiment of the heat storage system of the present invention.

FIG. 5 is a configuration diagram of a modification of the embodiment of FIG. 4;

FIG. 6 is a configuration diagram of a modified example of the embodiment of FIG. 1;

FIG. 7 is a configuration diagram of a fourth embodiment of the heat storage system of the present invention.

FIG. 8 is a diagram showing an example of an operation mode of an ice making / deicing cycle of the ice making plate according to the embodiment of the present invention.

9 is a diagram schematically showing the progress of deicing shown in FIG.

FIG. 10 is a diagram schematically showing a modification of the operation mode of FIG. 8;

FIG. 11 is a diagram schematically showing another modified example of the operation mode of FIG. 8;

FIG. 12 is a configuration diagram of a fifth embodiment of the heat storage system of the present invention.

FIG. 13 is a configuration diagram of a modified example of the embodiment of FIG.

FIG. 14 is a configuration diagram of a modification of the embodiment of FIG.

FIG. 15 is a perspective view showing an example of the shape of the powerful jet nozzle of FIG.

FIG. 16 is a perspective view showing another example of the shape of the powerful jet nozzle of FIG.

FIG. 17 is a perspective view showing still another example of the shape of the powerful jet nozzle of FIG.

FIG. 18 is a configuration diagram showing an example of a conventional heat storage system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ice-making part 1a-1g Ice-making board 2a-2g Sprinkler tube 3 Manifold 4a-4g Pipe 5a-5g Valve 6 Pump 7 Valve 8, 8A, 8B Pipe 9 Pipe 10A, 10B, 10C Pipe 11, 11A Valve 12, Radiator 13, 13A, 13B, 13C Pipe 14 Load pump 15, 16, 17 Valve 18, 18A Pipe 20A, 20B Valve 21A, 21B Pipe 50 Water 51, 51A De-icing 52 Tank 60, 61 Valve 62, 63 Pipe 64 Nozzle 65, 66, 66A Valve 67, 67A Pipe 68 Powerful pump 69, 69a-69e Powerful jet nozzle 70 Compressor 71 Condenser 72 High pressure receiver 73 Low pressure receiver 74 Liquid pump 75 Pressure reduction mechanism, 76, 77, 78, 79, 80, 81 Pipe 82 refrigerant 83 pipe 84a- 4e valve 85a~85e valve 86 valve 87a~87e pipe 88a~88e pipe 89a~89e pipes 90, 91 inverter 92 nozzle unit 100 refrigeration apparatus of a strong jet nozzle

Continued on the front page (72) Inventor Yasuo Fujitani 3-1-1, Sachimachi, Hitachi-shi, Ibaraki Pref. Hitachi, Ltd. Hitachi Plant (72) Inventor Shinichi Hoizumi 3-1-1, Sachimachi, Hitachi-shi, Ibaraki Inside Hitachi, Ltd. Hitachi Plant (72) Inventor Motoaki Utamura 3-1-1, Sachimachi, Hitachi-shi, Ibaraki Prefecture Inside Hitachi, Ltd. Hitachi Plant

Claims (9)

[Claims] An ice making plate having a refrigerant flow path therein; a water spraying mechanism for spraying water on an outer surface of the ice making plate; a tank disposed below the ice making plate for storing water and ice; A radiator that is connected and arranged to dissipate cold heat, a first water supply unit that takes in water from the tank and sends it to the water spray mechanism, and a second water supply unit that takes in water from the tank and sends it to the radiator. In the heat storage system provided with, a pipe connecting the outlet side of the radiator and the sprinkler mechanism is provided, and the amount of water sent to the sprinkler mechanism can be adjusted without being limited to the amount of water passing through the radiator. A heat storage system comprising: 2. The heat storage system according to claim 1, wherein the means for adjusting the amount of water sent to the watering mechanism includes a pipe provided in parallel with the radiator. 3. One water supply means includes a first water supply means and a second water supply means.
3. The water supply means according to claim 1 or 2,
A heat storage system according to claim 1. 4. The heat storage system according to claim 1, further comprising a branch pipe connecting the pipe on the outlet side of the water supply means and the tank. 5. The heat storage system according to claim 1, wherein water can be taken from a position having a different height from the tank bottom during heat storage and heat release. 6. A piping system for circulating a heating medium for deicing through a plurality of ice making plates constituting an ice making unit, wherein the piping system allows the heating medium flowing between the adjacent ice making plates to exchange time with each other. The heat storage system according to any one of claims 1 to 5, wherein the heat storage system is configured to be able to flow while shifting. 7. A pump configured to take in water in the tank and pressurize the water, and a pump connected to a discharge side of the pump and configured to inject water from above the water surface below an ice making section composed of a plurality of ice making plates. The heat storage system according to any one of claims 1 to 6, further comprising: 8. The heat storage system according to claim 7, wherein said pump is a powerful pump, and said water injection means is a powerful jet nozzle. 9. The heat storage system according to claim 8, further comprising means for changing the intensity of the jet stream jetted from the high-intensity jet nozzle at a later time.