JPH0233028Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to an ice storage device for use in air conditioning, cooling or heating.

(Prior Art) In recent years, air conditioning and cooling systems based on ice cold storage methods that utilize the latent heat of ice have been developed, and heat storage in ice is achieved by freezing water in a heat storage tank.

Conventional ice heat storage devices install a refrigerant pipe inside the heat storage tank, operate a refrigerator to cool the water in the heat storage tank with the refrigerant pipe to obtain ice, and then melt this ice during air conditioning to obtain ice. The cold water was supplied to the air conditioner as circulating cold water.

(Problem that the invention aims to solve) With conventional ice storage tanks, in order to melt ice and obtain the necessary cold water during the day, a large capacity storage tank is required to secure a sufficient amount of water. were becoming larger, and the power consumption when operating the refrigerator was also increasing. Furthermore, since the heat storage tank has a large capacity, there were cases where the water in the heat storage tank could not be uniformly frozen. Conversely, if the water in the heat storage tank is sufficiently frozen, the heat storage tank may be damaged due to the volumetric expansion of the ice.

This invention was made to solve the above problems, and the arrangement of the refrigerant pipes is devised to uniformly freeze the entire water in the heat storage tank, so that a small heat storage tank can store enough heat. The objective is to prevent damage to the heat storage tank by forming the heat storage tank with a heat insulating material that has an expansion and contraction function to absorb the volumetric expansion of ice.

Structure of the invention (means for solving problems) In order to achieve the above object, the present invention forms a cylindrical inner tank with a heat insulating material having an expansion/contraction function, and a semi-circumference of the upper part of the inner tank. A plurality of cold water connection ports are provided at each location, and a header connected to each cold water connection port is arranged vertically inside the internal tank, and both ends of the heat exchange pipe are connected internally to any two of the headers. The heat exchange pipes are connected in a meandering manner in the transverse direction of the tank, and multiple heat exchange pipes are connected in a multi-stage manner.
The respective heat exchange pipes were arranged so as to overlap each other in a substantially cross direction, and on the other hand, a plurality of refrigerant connection ports were provided at the remaining semicircumferential positions at the top of the above-mentioned internal tank, and connections were made to each refrigerant connection port. The headers are arranged vertically in the internal tank, refrigerant pipes are arranged between the respective heat exchange pipes, and both ends of each refrigerant pipe are connected to any two of the headers. A plurality of these refrigerant pipes are connected in a meandering manner in the transverse direction of the internal tank, and are arranged so that each refrigerant pipe and each of the heat exchange pipes overlap each other substantially in the cross direction, and A heat pipe is installed vertically inside the tank, and an external tank made of a heat insulating material is provided at a certain interval outside the internal tank, and the upper edge of the outer tank is higher than the upper edge of the inner tank. be.

(Function) Since the present invention is configured as described above, the water in the internal tank is cooled by the refrigerant circulating in the refrigerant pipes arranged between the heat exchange pipes, and becomes uniform ice. . In this case, since the internal tank is made of a heat insulating material with an expansion function, the volumetric expansion of the ice is absorbed by the internal tank, and the water between the internal tank and the external tank is transferred to the upper part of the internal tank by the amount of expansion. It overflows and becomes ice. Cold water is then circulated through the heat exchange pipes to melt the ice, and the resulting cold energy is used for air conditioning.

Furthermore, when freezing the water in the internal tank, the temperature of the water in the internal tank is made uniform by the action of the heat pipe, thereby efficiently freezing the water.

(Example) An example of the present invention will be described below based on the drawings. In FIG. 1, an internal tank 1 is made of a heat insulating material such as rubber having an expansion/contraction function, and a large number of heat exchange pipes 3 are disposed through headers 2 in the internal tank 1. As shown in FIGS. 2 and 3, the heat exchange pipes 3 are connected at both ends to different headers 2, and are arranged so that cold water circulates as will be described later. Specifically, a plurality of cold water connection ports 4 are provided at the upper semicircumferential position of the internal tank 1, and a header 2 connected to each cold water connection port 4 is arranged in the vertical direction inside the internal tank 1. Any two headers 2 among headers 2
Both ends of the heat exchange pipes 3 are connected in a meandering manner toward the transverse direction of the internal tank 1, and a plurality of heat exchange pipes 3 are connected in a multi-tiered manner, and each heat exchange pipe 3 is arranged so as to substantially cross each other. They are arranged so as to overlap in the direction, and a circulation pipe of an air conditioner (not shown) is connected to the cold water connection port 4.

On the other hand, a refrigerant pipe 6 is disposed between the heat exchange pipes 3 with a header 5 interposed therebetween. As shown in FIGS. 4 and 5, the refrigerant pipes 6 are connected at both ends to different headers 5, so that the refrigerant circulates. Specifically, a plurality of refrigerant connection ports 7 are provided in the remaining semicircumferential position of the upper part of the internal tank 1, and the header 5 connected to each refrigerant connection port 7 is arranged vertically within the internal tank 1. A refrigerant pipe 6 is arranged between each heat exchange pipe 3, and both ends of each refrigerant pipe 6 are connected to any two of the headers 5, and this refrigerant pipe 6 is connected to the internal tank. A plurality of refrigerant pipes 6 are connected in a meandering manner in the transverse direction of the refrigerant pipe 1, and each of the heat exchange pipes 3 is arranged so as to overlap each other substantially in the cross direction, and the refrigerant connection port 7 includes: Connect the refrigerant circulation pipe of the refrigerator (not shown).

Further, as shown by the dashed line in FIG. 1, a heat pipe 10 is installed vertically inside the internal tank 1.

Furthermore, an outer tank 8 made of a heat insulating material is provided at a constant interval outside the inner tank 1 so that the upper edge of the outer tank 8 is higher than the upper edge of the inner tank 1. In addition,
9 is a drain.

Next, the operation of the above embodiment will be explained.

A refrigerator is connected to the refrigerant pipes 6 arranged in multiple stages in the internal tank 1 to circulate a refrigerant such as Freon.
Water in an internal tank 1 is frozen to store ice heat.

In addition, there is a heat pipe 1 in the vertical direction inside the internal tank 1.
0 internally, it becomes possible to equalize the temperature of the water in the internal tank 1 and increase ice-making efficiency.

In other words, it is possible to reduce power consumption and obtain uniform ice.

The water in the internal tank 1 expands in volume when it freezes, but this volumetric expansion of the ice is caused by the expansion of the internal tank 1 because the internal tank 1 is made of a heat insulating material that has an expansion function, such as rubber. absorbed by. The water stored between the internal tank 1 and the external tank 8 overflows above the internal tank 1 by the volume of the expanded internal tank 1 and freezes.

When using the internal tank 1 and the ice heat storage heat source for cooling, the ice in the internal tank 1 is melted and heat exchanged by circulating cold water through the heat exchange pipe 3, and the obtained cold water is transferred to the air conditioner. Provided to.

Effects of the invention As explained above, according to the invention, the temperature of the water is made uniform by arranging refrigerant pipes in multiple stages in the internal tank and using heat pipes, which is better than the conventional method. Since uniform ice can be obtained with less power consumption, even a small heat storage tank can store enough cold energy for air conditioning.
In particular, multiple refrigerant pipes are connected in a meandering manner in the transverse direction of the internal tank, and the refrigerant pipes and the heat exchange pipes are arranged so that they overlap each other in the cross direction, so that the inside of the entire tank is Ice can be made evenly and heat can be efficiently stored in a compact tank. Moreover, since it can cope with the volumetric expansion of ice, there is no risk of damage to the heat storage tank.
Furthermore, since the inner tank and the outer tank are made of a heat insulating material, it is possible to prevent heat radiation from outside air, etc., so that it has various effects such as efficient ice heat storage.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a front sectional view of the invention, Figs. 2 and 3 are plan views showing the arrangement of heat exchange pipes, and Figs. 4 and 5.
The figure is a plan view showing the arrangement of refrigerant pipes, and FIG. 6 is a plan view showing the arrangement of heat exchange pipes and refrigerant pipes. 1... Internal tank, 2, 5... Header, 3... Heat exchange pipe, 4... Chilled water connection port, 6... Refrigerant pipe, 7... Refrigerant connection port, 8... External tank, 10...
heat pipe.

Claims (1)

[Scope of utility model registration request] The cylindrical internal tank is made of a heat insulating material that has an expansion and contraction function, and a plurality of cold water connection ports are provided at semicircumferential positions on the top of the internal tank. The ends of the heat exchange pipes are connected to any two of each header in a meandering manner in the transverse direction of the internal tank, and a plurality of heat exchange pipes are connected in a multi-stage manner. In addition, the respective heat exchange pipes are arranged so as to overlap each other in a substantially cross direction, and on the other hand, a plurality of refrigerant connection ports are provided at the remaining semicircumferential positions of the above-mentioned upper part of the internal tank, and each refrigerant connection port is provided with a plurality of refrigerant connection ports. Arrange the connected headers vertically in the internal tank, arrange refrigerant pipes between each heat exchange pipe, and connect both ends of each refrigerant pipe to any two of the headers. A plurality of the refrigerant pipes are connected in a meandering manner in the transverse direction of the internal tank, and are arranged so that each refrigerant pipe and each of the heat exchange pipes overlaps each other in a substantially cross direction, and A heat pipe is installed inside the interior facing up and down,
An ice heat storage device characterized in that an outer tank made of a heat insulating material is provided at a constant interval outside the inner tank, and the upper edge of the outer tank is formed higher than the upper edge of the inner tank.