JPH0719684A - Icemaking plate - Google Patents

Abstract

PURPOSE:To easily release ice by buoyancy by providing means for enhancing the releasability of ice at a lower end, the periphery or the outer surface of an aluminum plate in an icemaking plate arranged in an ice reservoir and having a refrigerant circuit on the aluminum plate. CONSTITUTION:A part having no refrigerant circuit 7 is formed over a length L at a lower end of an aluminum plate 30, and further a region 19 having a thickness loss than the thickness T of a part except it in thickness (t) is formed over a length 1 of the lower end. In order to release ices 9 adhering to both surfaces of an icemaking plate, hot water is supplied to the circuit 7, and then ice 9 of a part in contact with the plate 30 is melted. The circuit 7 is not provided at the end of the plate 30, and its thickness (t) is reduced, and hence ice 9 is not so grown on the end of the plate 30. Accordingly, the ice 9 of the end is released earliest, and then the entire ice 9 is operated by buoyancy, and hence preferably released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure and shape of an ice making plate for making ice in an ice heat storage tank.

[0002]

2. Description of the Related Art In an ice heat storage type air conditioning system,
For example, there is known a system in which electric power at midnight is used to produce ice in an ice heat storage tank, and the cold heat is used to perform daytime air conditioning. Ice-making plates are used in this type.

This ice making plate is provided with a refrigerant circuit in the thick portion of the plate, and the refrigerant in the refrigerant circuit is circulated to make water in the ice heat storage tank.

In the above ice making plate, the surrounding water becomes ice and adheres to the surface of the ice making plate. The ice that has adhered is once melted and receives a large buoyancy and separates from the ice making plate. The ice separated from the ice making plate rises in the water and is stored in a state of floating above the ice heat storage tank. Then, the refrigerant is circulated again in the refrigerant circuit to make ice, and the ice is melted again and separated from the ice making plate. By repeating this, ice making is repeated until the inside of the ice heat storage tank is almost full.

[0005]

However, in the conventional structure, if the ice is not removed from the ice making plate properly, new ice cannot be made, so that the ice making capacity of the ice heat storage tank is lowered.

[0006] In particular, the neck of the ice-making plate becomes the neck of the ice-making plate. For example, the lower end of the ice-making plate does not function properly. There is a problem that it will not go out properly.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an ice making plate in which ice can be easily removed by buoyancy.

[0008]

In order to achieve the above object, the present invention is an ice making plate arranged in an ice heat storage tank and provided with a refrigerant circuit in an aluminum plate. The outer surface is provided with means for promoting the detachability of ice.

[0009]

After the ice adheres to the surface of the ice making plate and grows sufficiently to grow, the ice is easily separated from the ice making plate by, for example, operating a heater circuit to warm it. At this time, according to the present invention, since the detachability of the ice attached to the tip portion of the aluminum plate or the periphery thereof is particularly promoted, the buoyancy acts on the ice and the overall detachability is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an ice heat storage tank. In this ice heat storage tank 1, water 2 is stored even near the top, and at its bottom, a large number of ice making plates 3 are vertically arranged, as shown in FIG. Each ice making plate 3 is arranged in a vertical posture at a predetermined interval from the adjacent ice making plate 3, and is supported by the supporting member 15.

Further, the refrigerant is supplied to each ice making plate 3 through the common refrigerant pipe 5. That is, as shown in FIG. 3, the ice making plate 3 is provided with a refrigerant circuit 7, and a refrigerant is flown into the refrigerant circuit 7 through the refrigerant pipe line 5.

When the refrigerant flows into the refrigerant circuit 7, the ice making plate 3
Functions as an evaporator, and when this functions as an evaporator, ice 9 adheres to the surface of the ice making plate 3 as shown in FIG.

When the ice 9 adheres to some extent, the supply of the refrigerant is stopped, and then, for example, hot water is flown into the refrigerant circuit 7.

Then, the ice 9 attached to the surface of the ice making plate 3
Receives heat from the surface of the ice making plate 3 and is melted by the heat,
It separates from the surface of the ice making plate 3, receives buoyancy in water, rises in the water in the ice heat storage tank 1, and is stored in the upper part.

When the ice 9 disappears from the surface of the ice making plate 3, ice 9 is newly added there by the function of the evaporator.
Is made ice. The above operation is repeated, and the ice heat storage tank 1
Ice 9 is made in the inside one after another.

In the air conditioning system, ice is made by, for example, electric power at night, and by the cold heat of the ice 9, air conditioning is performed in the daytime.

At this time, the cold water below the ice heat storage tank 1 is taken out by the water pipe 11 and used for daytime air conditioning (cooling). The water used for this cooling is again supplied to the upper water pipe 13
Is returned to the inside of the ice heat storage tank 1.

However, according to this embodiment, the ice making plate 3
Is characterized in that the ice 9 is easily separated from the surface of the ice making plate 3.

As shown in FIG. 3, a single ice making plate 3 has a refrigerant circuit 7 formed in a thick portion. That is, the ice making plate 3 of the present embodiment is manufactured by adhering two aluminum plates 30 together, and is manufactured by a so-called roll bond method. In this specification, the term "aluminum" includes aluminum alloy as well as pure aluminum.

When this is manufactured, the portion to be the refrigerant circuit 7 is not crimped, but the other portions are crimped. After the portion other than the refrigerant circuit 7 has been crimped, the portion to be the refrigerant supply port 17 is plugged.

However, most importantly, as shown in FIG. 4, a portion where the refrigerant circuit 7 is not provided is formed at the lower end portion of the aluminum plate 30 over the length L, and further, at the lower end portion. The thickness t is to be made smaller than the thickness T of the other portions throughout the length l.

In the above embodiments, the ice making plate 3 is manufactured by the roll bond manufacturing method, but the invention is not limited to this. For example, the ice making plate 3 may be manufactured by joining a tube or the like to be the refrigerant circuit 7 to an aluminum plate or a stainless plate. Further, the circuit may be bulged on at least one of the two metal plates by press molding or the like, and the other metal plate may be joined to this metal plate.

The operation of this embodiment will be described below.

With the ice making plate of the present embodiment, ice making is performed once every 15 minutes, for example, by using electric power at midnight. And it makes about hundreds of kilometers of ice in one hour.

At the end of the ice-making interval every 15 minutes, in order to remove the ice adhered to both sides of the ice-making plate 1,
For example, hot water is flowed through the refrigerant circuit 7. When warm water is flowed, the ice 9 in the portion in contact with the aluminum plate 30 is melted.

However, according to this embodiment, as described above, since the refrigerant circuit 7 is not provided at the tip portion of the aluminum plate 30 and the thickness t of that portion is thin, As shown in FIG. 4, the ice 9 does not grow so much at the tip of the aluminum plate 30. Therefore, ice 9
When peeling off the ice 9, the ice 9 at the tip of the ice peels off the earliest, and thereafter the buoyancy of the whole ice 9 acts, so that the ice 9 peels off well.

According to this, since the growth of new ice 9 is not hindered, there is an effect that the ice making can be efficiently advanced.

FIG. 5 shows another embodiment.

According to this, the heater circuit 21 is provided around the ice making plate 1, and in the heater circuit 21, the heater circuit 21 is provided.
As shown in, the heater wire 23 is embedded.

When the heater wire 23 is energized and the ice making plate 1 is warmed, the ice 9 around the ice making plate melts fastest. Since it comes off the earliest, the buoyancy of the whole ice 9 acts after that, so that the ice 9 comes off well.

The heater circuit 23 is not embedded in the heater circuit 21, but the refrigeration circuit is of a heat pump type.
The ice making plate 1 may be warmed by using the heater circuit 21 on the condenser side.

FIG. 7 shows still another embodiment.

According to this, when the ice making plate 1 is manufactured by the roll bond manufacturing method, the four aluminum plates 101 to 101 are
Using 104, the two inner aluminum plates 102, 1
A release agent is applied to the surfaces 102a and 103a of No. 03.

When the refrigerant circuit 7 is expanded in this state, the portion coated with the release agent separates, and the ice making plate 1 having both outer surfaces flat as shown in the figure is manufactured.

According to this, the aluminum plates 101, 1
Since the ice 9 adheres to the outside of 04, when the ice 9 is peeled off, the detachability of the ice 9 is improved and the ice making is efficiently advanced. If hot gas is allowed to flow in the circuit 107 inside the aluminum plates 101 and 104, the ice 9
The releasability of is further improved, and ice production can be efficiently advanced.

Although both outer surfaces are flat in this embodiment, only one outer surface may be flat. In that case, a single-sided expansion tube may be used when the ice making plate 1 is manufactured by the roll bond manufacturing method.

In the above embodiments, the heater circuit 21 is provided only at the tip of the periphery of the ice making plate 1,
In another embodiment, a heater circuit may be provided in another portion where ice is likely to adhere, or in the vicinity of the center of the ice making plate 1.

[0039]

As described above, according to the ice making plate of the present invention, the detachability of ice at the tip portion of the aluminum plate, the periphery thereof, or the outer surface is promoted, so that the detachability as a whole is improved. Accelerated and efficient ice making.

[Brief description of drawings]

FIG. 1 is a perspective view of an entire ice heat storage tank having an ice making plate according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a view showing one ice making plate.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a diagram showing another embodiment.

6 is a cross-sectional view taken along the line VI-VI of FIG.

FIG. 7 is a diagram showing another embodiment.

[Explanation of symbols]

 1 Ice Heat Storage Tank 2 Water 3 Ice Making Plate 5 Refrigerant Pipeline 7 Refrigerant Circuit 9 Ice 11, 13 Water Pipe 15 Supporting Member 17 Refrigerant Supply Port 19 Refrigerant Return Port 21 Heater Circuit 30, 101-104 Aluminum Plate

Claims (1)

[Claims] 1. In an ice making plate arranged in an ice heat storage tank and having a refrigerant circuit provided on an aluminum plate, a means for accelerating the detachability of the ice is provided at a lower end portion of the aluminum plate, the periphery thereof or an outer surface. An ice making plate characterized by being provided.