JPH0754222B2 - Direct contact type ice storage tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a direct contact type ice storage tank in which a refrigerant liquid retention region is restricted.

[Conventional technology]

As shown in FIG. 6, the conventional direct contact type ice storage tank 10
The tank-shaped main body 1 is partitioned into an ice making zone 3 and a heat storage zone 4 by a partition plate 2, and the brine B is cooled by blowing the refrigerant liquid Fl from the nozzle 5 into the ice making zone 3 to form a sherbet shape. Along with the generation of ice, the evaporated refrigerant gas Fg is discharged from the gas outlet 6 through a first
It is adapted to be tufted to the nozzle 5 through a circulation path 20. Further, the brine B in the heat storage zone 4 passes from the brine outlet 7 through a second circulation path 21 described later and returns to the main body through a return port 8.
Returned to.

In this ice making heat storage tank 10, the evaporation temperature of the refrigerant liquid Fl decreases as the amount of ice making increases, and the liquid surface is covered with ice i, so that the escape of the refrigerant gas Fg becomes worse and the brine B
A large amount of the refrigerant liquid Fl comes to stay inside.

Therefore, conventionally, not only is it necessary to increase the initial filling amount of the refrigerant liquid Fl, but since the refrigerant liquid Fl accumulates over the entire bottom portion of the main body 1, the refrigerant liquid Fl flows out together with the brine B from the brine outlet 7. There was also the problem of saying that.

Incidentally, FIG. 7 is a schematic view of the air conditioning equipment including the ice-making heat storage tank 10. The first circulation path 20 includes a switching valve 22 and a gas-liquid separator 2.
3, compressor 24, switching valves 25, 26, air heat exchanger 27, switching valve 2
8, 29, a liquid receiver 30, a switching valve 31, and a first expansion valve 32, one end of which is connected to the gas outlet 6 of the ice storage tank 10 and the other end of which is connected to the nozzle 5 of the same tank. The second circulation path 21 includes a pump 33, a condenser 34, and a load heat exchanger 37, one end of which is connected to the brine outlet 7 of the ice-making heat storage tank 10 and the other end of which is the line return port 8 of the tank. Connected to.

The switching valves 22 and 28 communicate with each other through a first bypass pipe 38,
The switching valves 25 and 29 communicate with each other through the second bypass pipe 39 passing through the condenser 34, and the switching valves 26 and 31 further include the second expansion valve.
The third bypass pipe 41 including 40 is connected and used for heating in winter. Furthermore, the load heat exchanger 37 and the air conditioner 42
An air conditioning circulation path 44 including a pump 43 is provided between and.

[Problems to be Solved by the Invention]

The present invention has been made in order to solve the conventional problems, and an object thereof is to prevent the refrigerant from staying and prevent the refrigerant liquid from flowing out of the ice maker.

[Means for Solving the Problems]

In order to solve such a problem, the present invention divides the inside of the ice maker body into an ice making zone and a heat storage zone by a partition plate, and in a direct contact type ice making heat storage tank provided with a nozzle for ice making zone refrigerant injection, in the body. In addition, a room for regulating the retention area of the refrigerant liquid is provided.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a first example of an ice making heat storage tank according to the present invention, in which a tank-shaped main body 1 is divided into an ice making zone 3 and a heat storing zone 4 by a partition plate 2, and a nozzle 5 makes ice making. Making ice by ejecting the refrigerant liquid Fl into the zone 3 is no different from the conventional one. Further, as in the conventional case, 6 is a gas outlet, 7 is a brine outlet, and 8 is a brine return port.

However, in this example, the partition wall 11 is provided in the heat storage zone 4 to form the independent chamber 12 for accumulating the refrigerant liquid Fl across the ice making zone 3 and a part of the heat storage zone 4. The partition wall 11 is in close contact with the inner wall surface of the main body 1 except for the upper end portion 11a thereof.

In addition, a brine suction pipe 13 that connects the vicinity of the bottom of the heat storage zone 4 and the vicinity of the upper portion of the ice making zone 3 is attached to the partition wall 11 so as to induce convection.

As described above, the refrigerant liquid is generated by the chamber 12 provided in the main body 1.
When the retention area of Fl is reduced, the pressure of the head decreases due to the rise of the retention surface of the refrigerant liquid Fl.
The refrigerant liquid Fl easily evaporates, and the amount of retention of the refrigerant liquid Fl decreases.

Further, the portion where the refrigerant liquid Fl is accumulated is on the ice making portion side, and since the accumulation of the ice i on the ice making portion side is relatively small due to the stirring effect due to the jetting of the refrigerant liquid Fl, the refrigerant liquid Fl is easily evaporated, The retention amount is reduced.

Next, FIG. 2 is a second example of the ice-making heat storage tank according to the present invention, in which the space between the lower end portion 2a of the partition plate 2 and the main body 1 is closed by the partition wall 11A to form the chamber 12. is doing.

Further, a brine suction pipe 13 that connects the vicinity of the bottom of the heat storage zone 4 and the vicinity of the top of the ice making zone 3 is fixed to the partition plate 2.

Next, FIG. 3 shows a third example of the ice-making heat storage tank according to the present invention, in which the chamber 12 is closed by closing the space between the lower end portion 2b of the partition plate 2 and the end plate 14 of the main body 1 by the partition wall 11B. Is forming.

Further, a brine suction pipe 13 that connects the vicinity of the bottom of the heat storage zone 4 and the vicinity of the upper portion of the ice making zone 3 is fixed to the partition wall 11B.

As the brine suction pipe 13, for example, a pipe having a circular or rectangular cross section is used, and a backflow prevention cover plate 15 is freely opened and closed by a hinge 16 or the like at the outlet 13a as shown in FIG. It is desirable to attach it via another jig.

Next, FIG. 5 is a fourth example of the ice-making heat storage tank according to the present invention, which is a partition plate 2 and a partition wall 11C attached to the lower end thereof.
To form room 12.

However, in this example, the upper end 2c of the partition plate 2 is made higher than the liquid surface 17 at the time when a predetermined amount of ice i is formed, and the brine B extracted from the heat storage zone 4 is injected into the room 12. There is.

The ice i generated in this room 12, that is, the ice making zone 3,
Since the specific gravity is smaller than that of the brine B, it floats above the ice making zone 3 and overflows from the upper end 2c of the partition plate 2 together with the introduced brine B.

Therefore, since the ice i does not accumulate in the ice making zone 3, the refrigerant gas Fg escapes better, and the refrigerant liquid Fl is prevented from accumulating.

〔The invention's effect〕

As described above, the present invention divides the inside of the ice maker body into an ice making zone and a heat storage zone by a partition plate, and in a direct contact type ice making heat storage tank provided with a nozzle for refrigerant injection in the ice making zone, in the body. Since a room for restricting the retention area of the refrigerant liquid is provided, the area of the refrigerant retention part is reduced as compared with the conventional one, and the refrigerant liquid is easily evaporated due to the rise of the refrigerant retention liquid surface, and the refrigerant retention The quantity is reduced.

In addition, since the amount of accumulated ice in the ice making zone is reduced, the refrigerant liquid is less likely to be trapped in the ice, and the evaporation of the refrigerant liquid is accordingly facilitated, so that the amount of accumulated ice is reduced.

Further, according to the present invention, the refrigerant liquid does not flow out from the ice-making heat storage tank together with the brine, and the good operation becomes possible.

[Brief description of drawings]

1, 2 and 3 are longitudinal sectional views of an ice making heat storage tank according to the present invention, and FIG. 4 is an enlarged side view of a main portion of a brine suction pipe.
FIG. 5 is a vertical cross-sectional view showing a fourth example of the ice-making heat storage tank according to the present invention, and FIG. 6 is a vertical cross-sectional view of a conventional ice-making heat storage tank.
The figure is a schematic view of a conventional air conditioning facility. 1 ………… ice maker main body, 2 …… partition plate, 3 …… ice making zone, 4 …… heat storage zone, 5 …… nozzle, 12 …… room.

Claims (1)

[Claims] 1. A direct contact type ice storage tank in which the inside of the ice maker body is partitioned by a partition plate into an ice making zone and a heat storage zone, and a nozzle for injecting a refrigerant is provided in the ice making zone. A direct contact type ice storage tank with a room that controls the retention area.