JPH073298B2 - Frosted ice storage system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a debris ice storage system, and more particularly to a debris ice storage system suitable for storing debris ice with water.

<< Prior Art >> In recent years, air conditioning such as cooling of buildings is increasingly using latent heat of ice.

For example, fragmented ice produced by an ice-making machine or the like is conveyed to a single or a plurality of ice heat storage tanks and temporarily stores heat as cold heat.

Then, if necessary, the cold water produced by melting the above-mentioned shards of ice or melted ice is taken out from the ice heat storage tank, and this cold water is sent to an air conditioner such as a fan coil connected to the ice heat storage tank to be used for cooling. The water that rises is returned to the ice storage tank and used to melt the ice pieces.

By the way, the above-mentioned shards of ice are often partially melted in the ice storage tank to form a huge ice block.

Therefore, when the above-mentioned return water is returned only from the return water port provided at one location of the ice heat storage tank, only the part of the ice block where the runoff water from this return water port hits melts, and finally the water body below it. A reaching hole is formed. Then, the returned water does not come into contact with the ice blocks, but flows directly through the holes into the lower water area (a so-called short pass phenomenon occurs), and the cooling efficiency of the returned water decreases.

In order to prevent this short-path phenomenon, a technique has been proposed in which the return water is evenly returned from the upper part of the ice heat storage tank (Japanese Patent Laid-Open No. Sho 61-135).
63-14021).

That is, in FIG. 3, the frosted ice 2 produced by the ice maker 1 is put into the ice heat storage tank 3 in which water is stored from the input port 1a and stored.

A large number of spray nozzles 5 for returning water from the air conditioner 4 are provided above the ice heat storage tank 3, and the return water is sprayed over almost the entire area of the ice heat storage tank 3.

As a result, even if a huge ice block is formed in the ice heat storage tank 3, the short path phenomenon as described above does not occur, and an effective return water cooling efficiency can be obtained.

The ice making machine 1 is supplied with water sampled from a water collecting port 6 provided in the lower portion of the ice heat storage tank 3 as ice making water.

<< Problems to be Solved by the Invention >> By the way, in the known technique shown in FIG. 3, the frosted ice pieces 2 put into the ice heat storage tank 3 in which water is stored from the ice making machine 1
Flies above water by forming an arch as shown by the action of the wall surface of the ice heat storage tank 3.

Then, since the frosted ice 2 cannot enter the lower part of the arch, the storage capacity of the ice heat storage tank 3 is significantly reduced.

In addition, since the shards of ice 2 are partially melted to form a huge ice mass in the shape of an arch, if the return water is uniformly sprayed from a large number of water spray nozzles 4 provided in the upper portion of the ice heat storage tank 3, the arch top will be At the thinnest part of the ice mass (ie, where the ice mass is thinnest), the ice melts fastest. Then, a hole reaching the lower water area is formed at this position, and the short-pass phenomenon described above also occurs to reduce the cooling efficiency of the return water.

The present invention has been made in view of the above stores, and an object thereof is to provide a debris ice storage system capable of storing debris ice without forming an arch in an ice heat storage tank. I have a suggestion.

<< Means for Solving the Problem >> In order to achieve the above-mentioned object, the frosted ice storage system according to the present invention has a function of returning water from an air conditioner or water collected from a lower portion of the ice storage tank to the ice storage tank. Ice and water are jetted from at least one location on the upper transverse rectangular wall surface by inclining in a certain direction with respect to the wall surface of the ice heat storage tank in a cross section near at least one water surface of the ice heat storage tank, thereby spraying ice and water. It is characterized in that, while forming a spiral flow, the fragmented ice is introduced from above the ice heat storage tank.

<< Operation >> In the present invention, the return water that is subjected to cooling by an air conditioner and rises in temperature to be returned to the ice heat storage tank, or water separately collected from the lower portion of the ice heat storage tank is used as a transverse rectangular wall surface of the upper portion of the ice heat storage tank. From at least one point in the ice heat storage tank in a cross section near the water surface of the ice heat storage tank, and is jetted while being inclined in a certain direction with respect to the wall surface of the ice heat storage tank.

A swirling flow is formed in the ice heat storage tank by the jetted water.

In the present invention, fragmented ice is put into the ice heat storage tank in which the spiral flow is formed from above the ice heat storage tank.

Then, the frosted ice rides on this swirl flow and reaches from the corners to the center of the ice storage tank.

Moreover, the action of the spiral flow cancels the action of forming the arch on the wall surface. As a result, the frosted ice pieces are accumulated in the ice heat storage tank without forming an arch.

Further, the frosted ice in the ice heat storage tank rides on the spiral flow due to the jetted water and constantly flows during the operation of the air conditioner. As a result, the fragmented ice does not become a huge ice block.

<< Embodiment >> FIG. 1 (A) is a longitudinal sectional view showing a first embodiment of an apparatus for implementing the system according to the present invention, FIG. 1 (B) is a transverse sectional view, and FIG. The same reference numerals as those in FIG. 3 in B) indicate the same parts as in FIG.

In this example, an example is shown in which the return water from the air conditioner 4 is ejected.

As shown in FIG. 1, a plurality of nozzles 10 (8 in this example) for ejecting the return water from the air conditioner 4 are provided on each of the four sides of the ice heat storage tank 3 having a rectangular cross section, two on each side. It is provided on the wall surface of the upper part of the heat storage tank 3 so as to be included in a plane crossing the wall surface.

At this time, each of the eight nozzles 10 is shown in FIG.
As shown in FIG. 3, the ice storage tank 3 is provided so as to be inclined in a certain direction with respect to the wall surface thereof.

In the device configured as described above, when the air conditioner 4 is operated, cold water is extracted from the lower portion of the ice heat storage tank 3 and is sent to the air conditioner 4 for cooling.

The water whose temperature has risen in the air conditioner 4 is returned to the ice storage tank 3 as return water.
As shown in FIG. 1 (B), the water is ejected from the above eight nozzles 10 provided near the water surface into the ice heat storage tank 3 while being inclined in a certain direction.

Then, in the ice heat storage tank 3, a swirl flow is formed as shown by an arrow α.

Fragmented ice 2 produced by the ice-making machine 1 is introduced into the swirl flow α from an inlet 1a provided above the ice heat storage tank 3.

The shards of ice 2 flow along the spiral flow α in the ice heat storage tank 3 and are evenly distributed from every corner of the ice heat storage tank 3 to the central portion thereof to be accumulated.

At this time, since the arch forming action by the wall surface of the ice heat storage tank 3 is canceled by the action of the above-mentioned spiral flow α, the fragmentary ice 2 is accumulated at a high filling rate without forming an arch.

Further, since the return water is constantly ejected from the nozzle 10 during the operation of the air conditioner 4, the above-mentioned spiral flow α is always generated.

For this reason, the fragmented ice 2 in the ice heat storage tank 3 always flows in the ice heat storage tank 3 along with the spiral flow α, and thus does not become a huge ice block.

Then, the returned water rides on the swirl flow α and makes good contact with the frosted ice 2, is effectively cooled, is extracted again as cold water, is sent to the air conditioner 4, and is used for cooling.

Therefore, in the case of this example, it is not necessary to sprinkle the return water over almost the entire area of the ice heat storage tank 3 as in the above-described known technique.

FIG. 2 (A) is a longitudinal sectional view showing a second embodiment of an apparatus for carrying out the system according to the present invention, FIG. 2 (B) is a lateral sectional view, and FIG. The same reference numerals as those in FIGS. 1 and 3 denote the same parts as those in FIGS.

In this example, an example in which water collected from the lower part of the ice heat storage tank 3 is ejected is shown.

As shown in FIG. 2, eight nozzles 10 for ejecting water collected from the lower portion of the ice heat storage tank 3 are provided on each of four sides of the ice heat storage tank 3 having a rectangular cross section, as in the case of the first embodiment. They are provided one by one (in FIG. 2 (B), six are shown because of the space of the paper), and are provided on the wall surface of the ice heat storage tank 3 so as to be accommodated within a plane crossing the wall surface.

Further, each of the eight nozzles 10 is also provided so as to be inclined in a certain direction with respect to the wall surface of the ice heat storage tank 3 as in the case of the first embodiment.

Further, in this example, the ice making water collection port 6 is provided at the bottom of the ice heat storage tank 3.
Separately, two sampling ports 11 are provided, one for each sampling port 11
Each of the above eight nozzles 10 is
Each pipe 13 is connected via.

In the above apparatus, when the pumps 12, 12 are operated, cold water is extracted from the sampling ports 11, 11 and sent to the eight nozzles 10 via the pipes 13, 13.

Then, similarly to the first embodiment, it is jetted into the ice heat storage tank 3 to form a swirl flow as shown by an arrow α.

Into the swirl flow α, as in the first embodiment, the ice heat storage tank 3
Fragmented ice 2 produced by the ice maker 1 is loaded from above.

The shards of ice 2 flow along the swirl flow α in the ice heat storage tank 3 and evenly spread from every corner of the ice heat storage tank 3 to the central portion, and the arching action of the wall surface of the ice heat storage tank 3 is offset. And is accumulated at a high filling rate.

Also in this example, during operation of the air conditioner (not shown in FIG. 2), the pumps 12 and 12 are continuously operated to constantly form the swirl flow α and keep the fragmented ice 2 flowing. By doing so, it is possible to prevent the formation of huge ice blocks and to improve the cooling efficiency of the return water from the air conditioner.

In the first and second embodiments described above, the plurality of nozzles 10 are provided so as to fit within a plane that intersects the wall surface of the upper portion of the ice heat storage tank 3, but the plurality of nozzles 10 are arranged in a staggered pattern, for example. The ice storage tank 3 may be installed so as to be accommodated in a large number of planes that cross the wall surface above the ice storage tank 3.

<Effects of the Invention> According to the system of the present invention described in detail above, the return water from the air conditioner or the water collection from the lower part of the ice storage tank is provided near the water surface of the rectangular wall surface crossing the upper portion of the ice storage tank. The following effects can be obtained because a spiral flow is formed by being ejected from the nozzle in a certain direction with respect to the wall surface.

That is, first, the shards of ice thrown in from above the ice heat storage tank ride on this spiral flow and are evenly accumulated from every corner of the ice heat storage tank to the central portion.

Moreover, the swirling flow cancels the arch-forming action on the wall surface of the ice heat storage tank, and the ice pieces are accumulated at a high filling rate.

These greatly improve the ice storage capacity of the ice heat storage tank.

Next, since the debris ice accumulates evenly without forming an arch, there is no adverse effect that the debris ice in one part melts quickly due to the return water, and the short path phenomenon of the return water occurs. Absent.

Therefore, the returned water can be effectively cooled.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the system according to the present invention. FIG. 1 (A) is a longitudinal sectional view, FIG. 1 (B) is a lateral sectional view, and FIG. 2 is a second embodiment of the system according to the present invention. An example is shown in the same figure (A)
Is a vertical sectional view, FIG. 3B is a horizontal sectional view, and FIG. 3 is an explanatory view showing a known ice heat storage technique. 1a …… Injection port for shards of ice 2 …… Shards of ice 3 …… Ice heat storage tank 4 …… Air conditioner, 10 …… Nozzle 11 …… Sampling port under the ice storage tank

Claims (1)

[Claims] 1. A cross section of returned water from an air conditioner or water collected from the lower part of the ice heat storage tank from at least one point of a transverse rectangular wall surface of the upper part of the ice heat storage tank to at least one water surface of the ice heat storage tank. Injecting fragmented ice from above the ice heat storage tank while forming a swirl flow of ice and water by injecting the ice heat storage tank inclining in a certain direction with respect to the wall surface of the ice heat storage tank. Characterized debris ice storage system.