JPH08210671A - Ice heat storage device - Google Patents

Abstract

PURPOSE: To improve the filling rate of ice by a method wherein produced sherbet type ice of two-phases of solid and liquid is stored once in a sherbet type ice transfer tank, then, is transferred switchably to a transfer tube or an ice storage tank by the gravity of the sherbet type ice. CONSTITUTION: The bottom part 3a of a sherbet type ice transfer tank 3 is formed to have slanted surface, gradually lowered toward a discharging port 4. The discharging door 10 of the sherbet type ice transfer tank 3 is opened fully in one stroke whereby the sherbet type ice in the sherbet type ice transfer tank 3 can be transferred in one stroke to a transfer tube 5 by the gravity of the i.e. On the other hand, the discharging door 10 of the discharging unit 4 and the inlet port door 11 of an ice storage tank 6 are opened fully in one stroke whereby the outlet port of the sherbet type ice transfer tank 3 and the inlet port 6a of the ice storage tank 6 are opened to communicate and the inlet port of the transfer tube 5 is closed totally, then, the sherbet type ice 2 in the sherbet type ice transfer tank 3 can be transferred into the ice storage tank 6 in one strode. According to this method, the filling rage of ice can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice heat storage device, and more particularly to a sherbet-shaped ice carrier for storing the generated two-phase ice water sherbet-shaped ice so as to be switchably transferred to an ice storage tank and a carrier pipe. The present invention relates to an ice heat storage device in which a tank is provided to achieve a high IPF (ice filling rate).

[0002]

2. Description of the Related Art In recent years, in a relatively large-scale air conditioning system in an industrial plant, a building, etc., there are many examples of introducing a heat storage air conditioning system using night electricity, which is inexpensive.
This reduces power demand during peak daytime air-conditioning loads, and can use power during low-price hours during night-off peak hours, ensuring stable power supply and economical operation of air-conditioning systems. It is possible to meet profits and social demands such as suppression of carbon dioxide gas generation.

As one type of heat storage air-conditioning system of this type, an ice heat storage device which is excellent in safety and economical efficiency is known for cooling load in summer. In particular, in the ice heat storage system that emphasizes the ice-dissolving property, the ice making process was devised so that sherbet-like ice and fine ice particles were formed and floated in the water tank to be warmed after absorbing the cooling load. A method in which water is refluxed and mixed to melt ice, which is generally called a dynamic method, is becoming mainstream in recent years.

As an advantage of such an ice heat storage device, low temperature water close to 0 ° C. or ice-containing water is taken from an ice making tank or an ice storage tank to a building to be cooled at the time of cooling demand, so that the low temperature becomes high density. For example, it may be conveyed forcibly. As a result, it is possible to reduce the diameter of the water supply pipe and reduce the transportation power.

[0005]

However, in an ice heat storage system or the like which adopts such a conventional dynamic ice making method, a slurry pump or the like is used as a means for transferring the ice mass made into the ice storage tank to improve the ice filling rate. Since it is used, the pressure loss is large, resulting in a significant loss of ice energy. Further, like the slurry pump, the energy of ice is lost in the transportation stage by means of the transportation by power, and the IPF (ice filling rate) is greatly affected.

That is, in the dynamic ice making method characterized by producing ice in a sherbet state, the sherbet-like ice produced is stored in the upper part of the water tank by buoyancy. At the top of the stored ice, the volume ratio of the ice is about 50% because it receives weak pressure due to the buoyancy of the ice below, but at the bottom of the stored ice, there is no pressure, so the volume occupied by the ice The rate has dropped significantly.

For this reason, the conventional dynamic ice-making type ice heat storage device has a drawback that the ice filling rate (ice packing factor, IPF) of the heat storage water tank is low. As a means for improving the ice filling rate, a slurry pump is used to transfer the produced ice blocks to the ice storage tank, but there is a drawback that the pressure loss increases as described above. In addition, there is also a technology that pumps the sherbet-shaped ice stored in the upper part of the ice-making tank by a transfer means such as a water wheel and transfers it to the ice-storage tank, but since it requires a complicated mechanism, it can be used for long-term maintenance and inspection. There was a problem.

Therefore, the present invention has been made in consideration of the above circumstances, and its purpose is to provide an ice filling rate (IPF) with a simple structure.
An object of the present invention is to provide an ice heat storage device capable of improving the temperature.

[0009]

The present invention is configured as follows in order to solve the above-mentioned problems.

The invention according to claim 1 of the present application has a sherbet-like ice transport tank for storing the produced solid-liquid two-phase sherbet-state ice water so as to be switchably transportable to a plurality of transport destinations. Is characterized by.

According to a second aspect of the present invention, in the sherbet-like ice transport tank, the sherbet-like ice discharge port has an inlet of a transport pipe for transporting the sherbet-like ice and an ice storage tank for storing the sherbet-like ice. It is characterized in that each of these communication passages is provided with an opening / closing body that opens and closes each of these communication passages so as to communicate freely with the transport pipe and the storage tank.

Further, the invention according to claim 3 of the present application is
An ice lump crushing means for crushing the ice lumps of the sherbet-like ice is provided in a conveying path which communicates with the sherbet-like ice conveying tank and conveys the sherbet-like ice.

Further, in the invention according to claim 4 of the present application, the sherbet-like ice transport tank is provided with an extruding means for pushing the sherbet-like ice stored therein to the sherbet-like ice discharge port side. It is characterized by

Further, the invention according to claim 5 of the present application is characterized in that the ice storage tank is provided with an thawing nozzle capable of moving up and down so as to sprinkle water on the sherbet-like ice therein to thawing. .

[0015]

According to the present invention, the generated solid-liquid two-phase sherbet-state ice is temporarily stored in a sherbet-like ice transport tank, and from there, a shelvet-like ice is used by its own weight without using a slurry pump or the like. Transferable to each destination such as an ice storage tank.

That is, by opening and closing the opening / closing body such as the opening / closing door of the sherbet-shaped ice carrier tank, the discharge port of the sherbet-shaped ice carrier tank is communicated with at least one of the inlet of the carrier pipe and the inlet of the ice storage tank. Thus, the sherbet ice in the sherbet ice transport tank can be transferred to the transport pipe or the ice storage tank at once without using a slurry pump.

By providing the sherbet-like ice transport tank in this way, the ice storage tank and the transport path for direct ice water transport (ice water transport two-phase flow) to the transport pipe can be appropriately switched, thereby providing a versatile cooling and heating system. The supply can be appropriately adjusted.

Further, since the sherbet-like ice is not transferred by the slurry pump, the pressure loss can be reduced and the ice filling rate (IPF) can be improved.

Further, even if sherbet-like ice freezes in an ice water transport path or the like, the ice lumps are crushed by the ice lump crushing means, so that the transport can be carried out smoothly and the clogging of the transport path can be prevented. can do.

Further, by pushing the sherbet-like ice in the sherbet-like ice transport tank to the discharge port side, the efficiency of transporting the sherbet-like ice to the destination can be improved.

In the thawing, the lump of ice accumulated in, for example, the upper part of the thawing tank is sprayed with water from the thawing nozzle to thawing into a sherbet state, and the efficiency of carrying the sherbet-like ice can be improved.

Further, since the deicing nozzle can move at least up and down, the deicing efficiency can be improved because the deicing nozzle approaches the vicinity of the ice block or dives into the ice block and sprays water in the ice block.

[0023]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5, the same or corresponding parts are designated by the same reference numerals.

FIG. 1 is a longitudinal sectional view of an essential part of an embodiment of the ice heat storage device according to the present invention. In this figure, the ice heat storage device 1 is shown.
Is a heat exchange (not shown) of the sherbet-like ice 2 in the discharge port 4 of the sherbet-like ice transport tank 3 which stores the solid-liquid two-phase sherbet-like ice 2 of ice particles 2a (indicated by X in the figure) and water 2b. An inlet portion 5a of the transport pipe 5 for transporting to a required location such as a section,
The inlet 6a of the ice storage tank 6 for storing the sherbet-shaped ice 2 is communicated with it.

The sherbet-shaped ice transport tank 3 has its outer peripheral surface covered with a heat insulating material (not shown), and an impact plate 7 is arranged above the upper open end thereof. The impact plate 7 and the sherbet ice 2 itself. Then, for example, cold water 9 at about −3 ° C. is applied from nozzles of a plurality of ice makers 8 to generate sherbet-like ice 2 containing ice particles 2a, and the sherbet-like ice transport tank 3 is temporarily stored. The ice maker 8 is operated, for example, at a low price at night.

The sherbet-shaped ice transport tank 3 has a bottom portion 3a.
Is formed on the inclined surface that gradually decreases toward the discharge port portion 4, while the discharge door 10 is provided on the discharge port portion 4 so as to be openable and closable. Further, an entrance door 1 that can be freely opened and closed is provided at the entrance 6a of the ice storage tank 6.
1, the discharge door 10 and the entrance door 11 are driven to open and close by a drive device (not shown), and the opening / closing control can be performed by operating an operation panel or the like (not shown).

The carrier pipe 5 has an ice mass crushing blade 13 driven by a motor 12 inside the inlet portion 5a thereof, and sherbet the ice mass in which a plurality of ice particles 2a of the sherbet-like ice 2 are frozen. Transport tube 5
To improve the transportation efficiency.

Therefore, by fully opening the discharge door 10 of the sherbet-like ice transport tank 3 all at once, the sherbet-like ice 2 in the sherbet-like ice transport tank 3 can be transferred all at once to the transport pipe 5 by its own weight, and the slurry It can be transported without using a pump.

In addition, the discharge door 10 and the entrance door 11 of the ice storage tank 6
By fully opening all at once, the outlet of the sherbet-shaped ice transport tank 3 and the inlet 6a of the ice storage tank 6 are fully opened to communicate with each other, while the inlet of the transport pipe 5 is fully closed, the sherbet-like ice transport tank The sherbet-shaped ice 2 in 3 can be conveyed all at once to the ice storage tank 6. For this reason, the ice filling rate can be increased, and the pressure loss due to the use of the slurry pump can be prevented in advance, and the transfer efficiency can be improved. The outlet 4 of the sherbet-shaped ice transport tank 3 is not limited to being provided in the lower portion of the sherbet-shaped ice transport tank 3 as shown in FIG. 1, and may be the upper portion or the middle portion of the sherbet-shaped ice transport tank 3. Also in this case, since the sherbet-like ice 2 is in a solid-liquid two-phase, it can be smoothly transported to the transport pipe 5 or the ice storage tank 6.

FIG. 2 shows a second embodiment of the present invention,
This is a part of the bottom of the sherbet-like ice carrier tank 3,
It is characterized in that a sherbet-like ice producing chamber (hereinafter referred to as an ice making machine) 14 is provided in communication with each other, and an outlet 14a of the ice making machine 14 is provided with an openable / closable outlet door 15. The ice making machine 14 is operated at a cheap electric power at night, for example, to discharge the refrigerant 17 such as CFC into the water 2b in the ice making machine 14 to produce the sherbet ice 2 containing the ice particles 2a. . The bottom of the ice maker 14 is connected to a refrigerant recovery device via a pipe (not shown), and the refrigerant 17 recovered here is collected.
Is again supplied to the refrigerant jet nozzle 16.

The sherbet-like ice 2 produced by the ice making machine 14 is transferred from the ice making machine 14 into the sherbet-like ice transport tank 3 by opening the outlet door 15, and is temporarily stored therein. The sherbet-like ice 2 in the sherbet-like ice transport tank 3 is transported to the ice storage tank 6 or the transport pipe 5 at once in the same manner as in the above embodiment, and it is not necessary to transport the sherbet-like ice 2 by the slurry pump. The same operational effect as can be obtained.

FIG. 3 shows a third embodiment of the present invention,
This is a sherbet-like ice extruding device (hereinafter referred to as ice block extruding device) 20 for extruding the sherbet-like ice 2 in the sherbet-like ice transport tank 3 shown in FIG. It is characterized in that a door opening / closing device 21 that opens and closes the outlet 14a of 14 is provided.

The ice lump extruding device 20 pushes the sherbet-like ice 2 in the sherbet-like ice transport tank 3 forward and backward from the inside of the back surface 3a thereof toward the discharge port 4 and forward and backward of the push plate 22. Push plate drive device 23 for driving
Have and.

The opening / closing door device 21 is the outlet 14a of the ice making machine 14.
Has a horizontal opening / closing door 24 for moving and opening / closing in a horizontal direction, and an opening / closing driving device 25 for opening / closing driving the horizontal opening / closing door 24.

Therefore, by opening the discharge door 10 of the sherbet-shaped ice transport tank 3 and appropriately pushing out the sherbet-shaped ice 2 in the sherbet-shaped ice transport tank 3 to the discharge port 4 side by the ice block pushing device 20, It is possible to convey the ice cubes 2 to the destination at a high efficiency all at once, and to convey most of the sherbet ice 2 in the sherbet ice transport tank 3 all at once. At this time,
Since the sherbet-shaped ice 2 floats up from the outlet 14a of the ice making machine 14, the outlet 14a can be closed by the horizontal opening / closing door 24 to prevent the influence of dynamic pressure.

Further, since the outlet 14a of the ice making machine 14 is opened and closed by reciprocating the horizontal opening / closing door 24 in the horizontal direction, the outlet 14a is rotated like the outlet door 15 shown in FIG.
The driving force can be reduced as compared with the case where a is opened and closed. Therefore, it is possible to reduce the size and cost of the opening / closing drive device 25.

FIGS. 4 and 5 show a fourth embodiment of the present invention, in which a water spray nozzle for defrosting is provided on an upper portion of an ice storage tank 6 to which the sherbet-like ice 2 is transferred from the sherbet-like ice transport tank 3. A feature is that the device 30 is provided so as to be vertically movable and laterally movable.

In the sprinkling nozzle device 30 for deicing, for example, a large number of sprinkling holes are formed in a tapered conical sprinkling nozzle 3 below, and an expandable arm tube 32 is connected to the upper end of the sprinkling nozzle 31 in the figure. Then, the telescopic arm tube 32 is telescopically attached to the movable storage device 33.

The storage device 33 is constructed so as to travel vertically and horizontally on a traveling rail 34 which is horizontally installed on the upper end of the ice storage tank 6, and is electrically connected via a signal line (not shown) (not shown). Travel rail 3 according to the operation of the operation panel
The water is sprinkled on the sherbet-shaped ice 2 while traveling vertically and horizontally on the water.

Further, the storage device 33 is connected to an expandable water supply pipe 35, receives the deicing water at a predetermined temperature supplied from the water supply pipe 35, and further receives this water through a telescopic arm pipe 32. Water is supplied to 31 and sprinkled to dissolve the sherbet ice 2.

The storage device 33 has a built-in control device (not shown) mounted on the telescopic arm tube 32 and electrically connected to a position detection sensor 36 for detecting the height of the upper surface of the sherbet ice 2. The control device is the position detection sensor 36.
According to the height of the sherbet-shaped ice 2 detected by, the telescopic arm tube 32 is appropriately expanded and contracted to vertically move the water spray nozzle 31. In FIG. 4, reference numeral 37
Is a heat radiation prevention cover, and 38 is an intake pipe for taking in the water 2b in the sherbet-like ice transport tank 3 and supplying it to a predetermined location.

Then, the sherbet-like ice 2 made at night is temporarily stored in the ice storage tank 6 mainly by using cheap electric power at night.
Is stored in the storage device 33 at the upper part of the ice storage tank 6 so as not to interfere with ice storage and ice transportation.

On the other hand, during daytime air-conditioning load, the telescopic arm tube 32 is extended downward in the figure in order to thaw the sherbet-shaped ice 2, and is brought close to the sherbet-shaped ice 2, and the thawed water is sprayed at a predetermined temperature to thaw the ice. As the ice melts, the watering nozzle 21 is lowered. Sherbet ice 2 at this place
When melted, the storage device 33 moves on the traveling rail 34 and moves to an appropriate place. During the movement, the heat radiation prevention cover 37 blocks the heat radiation of the cold heat on the traveling rail 34.
Further, the position detecting sensor 36 moves the telescopic arm tube 32 up and down while moving up and down while grasping the level of the sherbet ice 2 and the shape of the ice block. Also, the watering nozzle 3
1 is movable in water, and is formed in a conical shape or the like in order to reduce resistance of water.

[0044]

As described above, according to the present invention, the produced solid-liquid two-phase sherbet-shaped ice is temporarily stored in a sherbet-shaped ice transport tank, and from there, a slurry pump or the like is not used. It can be transferred to each destination such as a carrier pipe or an ice storage tank by the weight of ice.

That is, the discharge port of the sherbet-shaped ice transport tank is made to communicate with at least one of the inlet of the transport pipe and the inlet of the ice storage tank by the opening operation of the opening / closing body such as the opening / closing door of the sherbet-like ice transport tank. Thus, the sherbet ice in the sherbet ice transport tank can be transferred to the transport pipe or the ice storage tank at once without using a slurry pump.

By providing the ice water transport tank in this way, direct ice water transport to the ice storage tank and the ice water transport pipe (ice water transport 2
Since the transport path for the (phase flow) can be appropriately switched, it is possible to appropriately supply multi-purpose cold heat.

Further, since sherbet-like ice is not transferred by a slurry pump or the like, pressure loss can be reduced and the ice filling rate (IPF) can be improved.

Further, even if sherbet-like ice freezes in an ice water transport path or the like, the ice lumps are crushed by the ice lump crushing means, so that the transport can be carried out smoothly and the clogging of the transport path can be prevented. can do.

Further, the sherbet-like ice in the sherbet-like ice transport tank is pushed out toward the discharge port side by the pushing means, so that the efficiency of transporting the sherbet-like ice to the destination can be improved.

Further, since the deicing nozzle can be moved up and down, the deicing efficiency can be improved because the deicing nozzle is brought close to the ice block or is made to dive into the ice block and water is sprayed in the ice block.

[Brief description of drawings]

FIG. 1 is a longitudinal cross-sectional view of a main part of a first embodiment of an ice heat storage device according to the present invention.

FIG. 2 is a vertical cross-sectional view of a main part of a second embodiment of the ice heat storage device according to the present invention.

FIG. 3 is a longitudinal sectional view of a main part of a third embodiment of the ice heat storage device according to the present invention.

FIG. 4 is a vertical cross-sectional view of a main part of a fourth embodiment of the ice heat storage device according to the present invention.

5 is a perspective view of the embodiment shown in FIG.

[Explanation of symbols]

 1 ice heat storage device 2 sherbet ice 2a ice particles 2b water 3 sherbet ice transport tank 4 sherbet ice discharge port 5 ice water transport pipe 5a transport pipe inlet 6 ice storage tank 6a ice storage tank inlet 7 impact plate 8 ice making Machine 9 Cold water 10 Discharge door 11 Inlet door 12 Motor 13 Ice block crushing blade 14 Sherbet production chamber (ice making machine) 14a Sherbet production chamber outlet 15 Outlet door 16 Refrigerant ejection nozzle 20 Sherbet-like ice extrusion device 21 Door opening / closing device 22 Push plate 23 Push plate drive device 24 Horizontal opening / closing door 25 Opening / closing drive device 31 Water sprinkling nozzle 32 Telescopic arm tube 33 Storage device

Claims (5)

[Claims] 1. An ice heat storage device comprising a sherbet-shaped ice transport tank for storing the generated solid-liquid two-phase ice water in a sherbet state so as to be switchably transportable to a plurality of transport destinations. 2. A sherbet-like ice transport tank is provided with a sherbet-like ice discharge port which communicates with an inlet of a transport pipe for transporting sherbet-like ice and an inlet of an ice storage tank for storing sherbet-like ice. 2. The ice heat storage device according to claim 1, wherein the communication passage includes an opening / closing body that opens and closes each of the communication passages so as to communicate with the transport pipe and the storage tank so as to be freely transported. 3. An ice lump crushing means for crushing an ice lump of sherbet-like ice is provided in a conveying path for communicating the sherbet-like ice, which is communicated with the sherbet-like ice transport tank. The ice heat storage device described. 4. The sherbet-like ice transport tank is provided with an extruding means for pushing out the sherbet-like ice stored therein to the sherbet-like ice discharge port side. The ice heat storage device according to item 1. 5. The ice storage tank is provided with an thawing nozzle for thawing by spraying water on the sherbet-like ice inside the thawing tank so as to be movable up and down. The ice heat storage device described.