JPH0638264Y2 - Vertical ice storage tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vertical ice storage tank used for an air conditioner for cooling and heating by an ice storage system.

[Conventional technology]

By separating the ice making zone and the heat storage zone in the ice cold heat storage system by a partition body in one tank body, a pump is unnecessary, the coefficient of performance of the system is improved, and the loss of the refrigerant system is eliminated, In the heat storage tank connecting the load heat exchanger and the condenser, the refrigerant liquid and the brine are brought into direct contact with each other, and the partition plate capable of circulating the upper layer part and the bottom layer part of the liquid in the heat storage tank. There is known an invention relating to an ice maker and a heat storage tank in which an ice making zone and a heat storage zone which are separated are formed (see Japanese Patent Laid-Open No. 63-135762).

As mentioned above, the conventional ice making heat storage tank is
Assuming that the building is installed on the roof or in the basement, most of them are horizontal type with a low vertical direction.

That is, in such a horizontal type ice storage tank, as shown in FIG. 2, the upper layer portion and the bottom layer portion of the liquid in the tank body are separated by the partition plate 1 which can flow, and the refrigerant liquid is stored in the ice making zone 3. The refrigerant is injected from the refrigerant outlet nozzle 5 via the inlet 2 into the brine B, and the injected refrigerant liquid receives the heat of the brine B and evaporates, and then is introduced from the refrigerant gas outlet 7 into a refrigerant compressor (not shown). .

On the other hand, the brine B in the ice making zone 3 is subjected to heat by the vapor of the refrigerant liquid, the temperature of the brine B drops, and crystals of ice I are produced in the brine B. The ice I passes through the upper part of the partition plate 1 and the heat storage zone. 4 enters and is stored as sherbet-shaped ice I.

Further, after the brine B is introduced from the brine outlet 8,
After the heat is exchanged by a load heat exchanger (not shown) by the brine pump 9, the brine is returned from the brine return port 10 into the tank for circulation.

However, in recent years, with the rise of buildings, when using this ice storage heat storage system, there is room in the height direction, but there is not room in the installation space. There is a problem that it is difficult to install.

[Problems to be solved by the invention]

The present invention has been made to solve the above-mentioned conventional problems, and provides a vertical ice storage tank that can be installed in a place where there is room in the height direction but there is not room in the installation space. The challenge is to provide.

[Means for Solving the Problems]

As means for solving the above-mentioned problems, the vertical ice-making heat storage tank of the present invention has an ice-making zone and an ice-making zone integrally provided in one tank body, and the ice-making zone has a bottomed weir. The heat storage zone is separated from the heat storage zone, and a refrigerant outlet nozzle is provided inside the heat storage zone, and the liquid level in the ice making zone is located above the liquid level in the heat storage zone, and from the bottom of the heat storage zone. A return port for the brine, which is the cooling water that has been drawn out, is provided in the upper part of the ice making zone, and the tank body is formed in a vertically long shape that is high in the vertical direction.

As a result, this ice storage tank does not occupy a horizontal installation space and has a form suitable for installation in high-rise buildings.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a system diagram of a cooling and heating air conditioning system using a vertical ice storage tank according to an embodiment of the present invention.

First, this vertical ice-making heat storage tank 11 is formed in a vertical shape that is high in the vertical direction, and the ice-making zone 3 is separated from the heat-storage zone 4 by a weir 12 having a bottom, and the liquid of the ice-making zone 3 is The surface is located above the liquid surface in the heat storage zone 4.

The brine B, which is the cooling water derived from the brine outlet 8 at the bottom of the heat storage zone 4, is sent to the load heat exchanger 20 by the brine pump 9, where the fan coil unit is used.
After heat exchange with the cooling water W for cooling sent from the cold / hot water pump 22 from 21, it is sent to the condenser 23 to be liquefied and then returned to the ice making zone 3 via the brine return port 10 above the ice making zone 3.

On the other hand, the refrigerant liquid injected from the refrigerant outlet nozzle 5 via the refrigerant liquid inlet 2 into the ice making zone 3 receives the heat of the brine B,
As a refrigerant gas from the refrigerant gas outlet 7 after evaporation, the compressor via the gas-liquid separator 24 that functions as an accumulator.
After being pressurized by 25 to a saturated vapor pressure corresponding to the condensation temperature, it is sent to an air-cooled condenser 26 and liquefied.

After passing through the refrigerant storage tank 27, the condensate is again injected into the ice making zone 3 from the refrigerant blowing nozzle 5 via the expansion valve 28.

The ice storage tank of the present invention described above has a vertical body in its tank body, so that the installation space may be small, and it is most suitable for the vertical installation space of high-rise buildings, etc. Since the ice I made by direct contact with the refrigerant and the refrigerant has a lower specific gravity than the brine B, it floats on the brine B like a sherbet, and together with the brine B introduced from the brine return port 10 at the upper part of the ice making zone 3, on the weir 12. And the ice layer part is accumulated from the upper part and the brine B is withdrawn from the brine outlet 8 in the lower part of the tank body, so that it gradually develops toward the bottom part of the tank as the amount of ice making increases. Go on.

Therefore, since the height of the tank body is higher than that of the horizontal type, the ice tank portion is pushed up by the buoyancy of the ice I and is strongly packed, so that the filling rate of ice is improved as compared with the conventional horizontal type ice storage tank. To do.

[Effect of device]

As explained above, according to the vertical ice making tank of the present invention,
The installation space is small and there is room in the height direction for high-rise buildings, etc., but it can be most effectively applied when the installation space is not available.

Further, since the present invention has a vertically long tank body, compared to the conventional horizontal type, the filling rate of ice in the tank can be improved, and a larger heat storage capacity can be achieved with a smaller tank capacity. There is also an advantage that it can be obtained.

[Brief description of drawings]

FIG. 1 is a system diagram of a cooling and heating air conditioning system using a vertical ice-making heat storage tank according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional horizontal ice-making heat storage tank. 3 ... Ice making zone, 4 ... Heat storage zone, 5 ... Refrigerant blowing nozzle, 8 ... Brine outlet, 9 ... Brine pump, 10 ... Brine return port, 11 ... Vertical ice making heat storage tank, 12 ... Weir, B ... Brine, I ... ice.

Claims (1)

[Scope of utility model registration request] 1. A heat storage zone is separated from a heat storage zone by a bottomed weir, and a liquid level in an ice making zone having a refrigerant blowing nozzle therein is positioned above the liquid level in the heat storage zone, and from the bottom of the heat storage zone. A vertical ice heat storage tank in which a tank body provided with an outlet for the derived brine at the top of the ice making zone is formed into a vertical shape.