JPH0375428A - Ice-cold-heat storage apparatus - Google Patents

Abstract

PURPOSE:To easily efficiently take out a large amount of cold-heat from an ice cold-heat storage tank by a method wherein branch pipes are automatically rotated by the reaction of spraying of brine and the brine is uniformly distributed over the ice cold-heat storage tank. CONSTITUTION:Spray nozzles 13 are arranged all on the same sides of the branch pipes and in a tilt slightly downward so that their spouting direction is along the periphery of a rotary joint 11. As the spouting direction is slightly downward, a component force, which causes the branch pipes to rotate, is produced by the spray nozzle as the reaction of spouting of brine. As the spray nozzles are arranged on the same slide of the branch pipes and the spouting direction is along the periphery of the rotary joint 11, the directions of the component forces are all the same, that causes the branch pipes to rotate around the rotary joint 11 with a large force. Thus, as the branch pipes are revolved by the spouting force of the brine, the brine is uniformly distributed in the circumferential direction around the rotary joint 11. Thereby, a large amount of cold-heat can be efficiently taken out.

Description

[Detailed description of the invention] (Industrial application field) This invention relates to ice heat storage equipment.

More specifically, it relates to an ice heat storage facility that stores cold energy in the form of ice particles in the form of ice particles, and generates a large amount of cold energy using the latent heat generated when the water particles melt.

(Conventional technique WI) Ice thermal storage equipment is already known. The ice heat storage equipment uses brine as a cooling medium, and consists of an ice heat storage tank that stores the moisture in the brine as sherbet-like water particles, and a brine that comes out of the ice heat storage tank, passes through a refrigerator, and goes into the ice heat storage tank. A cooling passage for returning brine to the ice storage tank, and a circulation passage for returning brine from the ice storage tank to the ice storage tank via a load device.

As the brine, in addition to an aqueous solution in which inorganic salts such as common salt were dissolved, an aqueous solution in which an organic substance such as ethylene glycol was dissolved was used.

In ice thermal storage equipment, the problem is how to store water in brine as sherbet-like ice. The reason is that the brine was stored as large blocks of ice.
This is because heat exchange within the ice heat storage tank will be hindered, and therefore, uniformly well-cooled brine cannot be smoothly supplied to the refrigerator or the load device. Moreover, ice heat storage equipment usually stores a large amount of brine, so if it is left unattended, the ice will form into lumps. However, with conventional ice heat storage equipment,
0 Japanese Patent Application Publication No. 1-1472 was not sufficient in this respect.
Publication No. 34 mainly concerns a rectangular parallelepiped ice heat storage tank.
This document describes a means for efficiently melting ice contained in brine to facilitate removal of brine. The means for this is to extend a large number of rows of branch pipes connected to the circulation passage above the stored brine, attach a jet nozzle to each branch pipe, and spray the brine from the jet nozzle.

In this application, since the ejection nozzle is fixed at a fixed position above the brine, local unevenness is likely to occur in the supply of the brine.

(Problems to be Solved by the Invention) The present invention aims to evenly and evenly distribute the brine returned from the circulation path to the ice heat storage tank, thereby maintaining the brine stored in the ice heat storage tank in a uniform sherbet shape. It is an object. Sherbet-like means that water in the brine exists as small ice particles. In addition, uniform sherbet means that ice droplets tend to collect at the top of the ice storage tank because ice has a lower density than water, but ice droplets are evenly distributed in the horizontal direction. This refers to a state in which a smooth surface with no irregularities is formed, and liquid brine seeps between the droplets. By maintaining this state, the present invention aims to make it possible to easily and efficiently extract a large amount of cold heat from the ice heat storage tank.

(Means for Solving the Problems) This invention provides a rotary joint above the ice heat storage tank and a branch pipe that rotates around the rotary joint, and brine from the circulation passage passes through the rotary joint and the branch pipe. , the brine is sprayed from a nozzle attached to the branch pipe, and the branch pipe is automatically rotated by the reaction force of the sprayed brine, so that the brine is evenly distributed into the ice heat storage tank.

Further, the present invention provides a rotary joint suitable for smoothly rotating a branch pipe.

(Summary of the Invention) This invention comprises an ice heat storage tank that stores moisture in brine as sherbet-like fine particles, a cooling passage that exits the ice heat storage tank and returns the ice heat storage tank Hebrine through a refrigerator, and In an ice heat storage facility equipped with a circulation passage that returns the ice heat storage tank Hebrine via a load device, the brine discharge end of the circulation passage is connected to a rotary joint located above the ice heat storage tank, and a branch pipe is connected to the rotary joint. The brine is installed radially and extends above the surface of the brine stored in the ice heat storage tank, and each branch pipe is equipped with a spray-type nozzle, and the direction of ejection from the nozzle is directed around the rotary joint and relative to the branch pipe. The present invention relates to an ice heat storage facility characterized in that the brine from the circulation passage is directed diagonally downward along the same side and drops from a spray nozzle onto the surface of the brine as small droplets.

(Example) An example of implementing the present invention will be explained based on the drawings as follows. FIG. 1 is a vertical sectional view schematically showing an example of an ice heat storage facility according to the present invention. FIG. 2 is a longitudinal sectional view of an example of an ice heat storage tank used in the present invention, and FIG. 3 is a plan view thereof. FIG. 4 is an enlarged sectional view of a spray nozzle that can be used in the present invention. Fifth
The figure is a cross-sectional view showing the attached state of a rotary joint that can be used in the present invention.

In FIG. 1, the ice heat storage equipment according to the present invention includes an ice heat storage tank 1, a cooling passage 8 which exits from the ice heat storage tank and returns brine to the ice heat storage tank via a refrigerator 2, and a cooling passage 8 which exits from the ice heat storage tank and returns brine to the ice heat storage tank. It stands out from the circulation passage 5 which returns the ice heat storage tank heat exchanger via the device 4. In the ice heat storage tank 1, water in the brine is maintained in the form of ice particles in the form of sherbet. The cooling passage 3 and the circulation passage 5 are such that brine flows therein in the direction of arrow A.

Inside the ice heat storage tank 1, there is a rotary joint 11 and a branch pipe 1.
2 and a spray/through 13 are attached.

The rotary joint 11 is attached above the surface of the brine stored in the ice heat storage tank 1, and the brine discharge end of the circulation passage s5 is fixed thereto.

The rotary joint 11 generally separates the rotating part from the fixed part, but the end of the circulation passage 5 is fixed to the fixed part. Branch pipes 12 are radially attached to the rotating part, and the branch pipes 12 are located above the surface of the brine stored in the ice heat storage tank 1 and extend along the brine surface.

Each branch pipe 12 is provided with a plurality of spray nozzles 18 on its lower side. Each spray nozzle 18 has a structure in which the liquid is dispersed as droplets in a conical shape with its spout as the apex. Each spray nozzle 18 is installed at an appropriate distance depending on the apex angle of the above-mentioned conical shape. In this case, each spray nozzle 13 is required to direct its ejection direction in a specific direction.

The direction in which each spray/slur 13 should face is such that the spray direction is around the rotary joint, on the same side of the branch pipe, and diagonally downward. Since the spray direction is diagonally downward, the spray nozzle generates a component force that rotates the branch pipe as a reaction force to the brine spray. Moreover, since each spray nozzle is attached so that its ejection direction is on the same side of the branch pipe around the rotary joint, their component forces are directed in the same direction, and they all move the branch pipe in the same direction. Therefore, each branch pipe rotates around the rotary joint with a large force.

Since the branch pipes are thus rotated by the brine jetting force, the brine is evenly distributed around the rotary joint in the circumferential direction. In addition, since the ejection direction is diagonally downward, there is no risk of the brine sticking to the branch pipe itself or the lid of the ice storage tank, and therefore the brine stored in the ice storage tank is efficiently returned onto the surface. . Strictly speaking, the ejection direction here means:
This is the direction of the central axis of the cone along which the droplets are scattered.

The specific examples of the ice heat storage tank according to the present invention shown in FIGS. 2 and 8 will be explained in more detail as follows. The ice heat storage tank 1 in FIGS. 2 and 3 has a unit plate 1
It consists of 4 to 18 connections. Unit plate 1
4 to 16 are constructed by providing inclined joint edges that stand up at 135 degrees from the board on the four sides of the board whose central part protrudes in a conical shape, and furthermore provide upright joining edges that stand up perpendicularly to the board. This is what I did. When the unit plates 14 to 16 are to form the ridge of the tank, the inclined joint edges are brought together and connected with bolts, and when the unit plates are to be extended in a planar shape,
It is used to abut the upright joint edges and connect them with bolts, thus forming a rectangular parallelepiped-shaped tank. A lid made up of unit plates 17 and 18 is attached to the tank thus formed to form an ice heat storage tank l.

The brine discharge end of the circulation passage 5 enters the ice heat storage tank 1 from above. That is, the end of the circulation passage 5 passes through the lid of the ice heat storage tank 1 and enters the tank.

The end of the passage 5 entering the tank is supported by a reinforcing rod 19 attached to the top of the tank. A rotary joint 11 is attached to the tip of the passage 5 supported in this way. As described above, the branch pipe 12 is attached to the rotary joint 11, and the spray nozzle 13 is attached below the branch pipe 12.

The tip end of the branch pipe 12 is bent upward.

This is to make it easier for the spray nozzle 13 attached there to face the ejection direction outward, and also to raise the ejection position so that small droplets of the ejected brine can be scattered far. be. Further, at the base of the branch pipe 12, a spray nozzle 13 is attached to the rotary joint 11 so as to be inclined toward the rotary joint 11. This is also to prevent the formation of a portion directly below the rotary joint 11 where brine droplets are not scattered.

A plan view of the ice storage tank shown in FIG. 2 is shown in FIG. In FIG. 3, the area in which each spray nozzle 13 drops brine as droplets onto the brine surface is indicated by a dot, IIB. The droplet is ejected so that it falls uniformly everywhere within the dotted line B, as well as around the point IIB. Further, it is preferable that the points @B of spray nozzles that are attached to the same branch pipe 12 and adjacent to each other partially overlap. Further, it is desirable that the spray nozzle 13 attached to the tip of each branch pipe 12 allows small droplets of brine spouted therefrom to reach the ridge of the tank.

FIG. 4 shows an enlarged cross-section of the spray nozzle 18. In the spray/slip of FIG.
2 and are broken down into droplets, which change their outflow direction and are further broken down into droplets, which are discharged from the outlet 183. The outlet 183 is trumpet-shaped and flares at the tip, so that the droplet spreads out in a conical shape. In this way, the brine is evenly distributed within the cone.

FIG. 5 shows a cross section of a rotary joint that can be used in the present invention. Rotary joint 1
1 is a flange-shaped packing 111 and a rotor 112
, a receiver 113 , and a ball 114 .

The gasket 111 is made of a hard resin that is easily slippery, such as a fluororesin, and has only slight flexibility, maintains a certain shape, and has a slippery surface.

The rotor 112 is provided in circumferential contact with the packing 111, and is rotatable coaxially with the cylindrical portion in contact with the outer periphery of the cylindrical portion of the packing. The rotor includes a flange 1121 that is brought into contact with the flange of the gasket 111. Receiver 11
3 supports the flange 1121 of the rotor via a pole 114, and is fixed to the packing 111 with bolts 115, making it easy to rotate the rotor 112 between the packing and the packing.

A brine passage passes through the interior of the rotor 112. The brine passage has an opening 116 extending along the axis of rotation of the rotor on the packing side, and an opening 117 radially toward the waste wall of the rotor on the opposite side of the packing. The opening 116 on the side of the seal communicates with the circulation passage 5, and the radial opening 117 has a branch pipe 12 connected thereto.
is fixed and communicates with the branch pipe 12.

In FIG. 5, when the brine flows from the circulation passage 5 along the arrow A, the brine flows through the rotor 112 into the branch pipe 12 and is ejected from the spray nozzle 13. At this time, the spray direction of the spray nozzle 13 is on the same side with respect to the branch pipe 12 around the rotary joint 11,
Since it is directed diagonally downward, the brine will move the branch pipe 12 in the horizontal direction due to the reaction when the brine is ejected, and each spray nozzle 13 will move the branch pipe 12 in the same direction. Due to the resultant force, branch pipe 1
2 will rotate easily. Especially Patsukin 11
1 is made of fluororesin and has a slippery surface, so the rotor 112 easily rotates around the seal 111, and a ball 114 is interposed between it and the support 118. Therefore, the rotor 112 will rotate more easily. The brine also naturally and evenly distributes the brine circumferentially around the rotary joint 11.

Additionally, the spray nozzle 18 disperses the brine as droplets. The dispersion is generally carried out within a conical area with the spout as the apex. Therefore, if the dispersion range from each adjacent spray nozzle 13 is brought into contact with or partially overlapped on the surface of the brine stored in the ice heat storage tank, the brine droplets will be dispersed from the branch pipes. All will be evenly distributed within the range of . Therefore, the brine in the ice heat storage tank can be maintained in a uniform sherbet shape.

(Effects of the Invention) According to this invention, since the brine discharge end of the circulation passage is connected to the rotary joint located above the ice heat storage tank, there is no need for the circulation passage to pass through the inside of the ice heat storage tank. Therefore, since there is no room for obstacles to exist on the surface of the brine stored in the ice heat storage tank, it is easy to maintain the brine surface uniformly. In addition, branch pipes are attached radially to the rotary joint, the branch pipes are extended above the brine surface, a spray nozzle is attached to each branch pipe, and the direction of the spray from the nozzle is set to the rotary joint. Since it was decided to direct the branch pipe diagonally downward on the same side as the pipe, the branch pipe is rotated around the rotary joint as a reaction to the brine jetting, and therefore, within the range where the branch pipe extends around the rotary joint. Brine can be ejected evenly in the circumferential direction, and all of the ejected brine enters the ice heat storage tank. in addition,
Since the brine is dropped as small droplets from the spray nozzle onto the brine surface, the brine is evenly distributed in the diametrical direction, thus leaving the ice formed in the brine as small sherbet-like particles. It is possible to uniformly exchange heat in the ice heat storage tank and take it out as -like brine. This invention provides a great advantage in that a large amount of cold energy can be uniformly extracted and utilized as described above.

Further, according to this invention, the rotary joint includes a flange-shaped packing fixed to the pipe end of the circulation passage, a rotor that is circumscribed to the packing and is rotatable coaxially with the packing, and a rotor that is connected to the rotor through a ball. While rotatably supporting the protruding flange on a part of the pipe, the structure is simple and it can be easily connected to the circulation passage and branch pipes. In this way, the rotor can be easily rotated together with the branch pipe. In addition, a brine passage is passed through the rotor, and one end of the brine passage communicates with the circulation passage through the packing, and the other end of the brine passage opens radially in four directions around the rotor and communicates with the branch pipes. Therefore, the brine can easily flow from the circulation passage into the branch pipe, and therefore the branch pipe can be easily rotated by the reaction of the jet from the spray nozzle. This invention provides such convenience.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical sectional view of an ice heat storage facility according to the present invention. FIG. 2 is a longitudinal sectional view of an ice heat storage tank that can be used in the present invention, and FIG. 3 is a plan view thereof. #
! FIG. 4 is an enlarged cross-sectional view of a spray nozzle that can be used in the present invention. FIG. 5 is an enlarged sectional view of a rotary joint that can be used in the present invention. In the figure, 1 is an ice heat storage tank, 2 is a refrigerator, 8 is a cooling passage, 4 is a load device, and 5 is a circulation passage. Also, 11 is a rotary joint, 12 is a branch pipe, 18
is a spray nozzle. Also, 111 is Patsukin, 112
is a rotor, 118 is a receiver, 114 is a ball, and 1121 is a collar.

Claims (1)

[Scope of Claims] 1. An ice heat storage tank that stores moisture in brine as sherbet-like ice particles, a cooling passage that exits the ice heat storage tank and returns the brine to the ice heat storage tank via a refrigerator, and an ice heat storage tank. In ice thermal storage equipment, the brine discharge end of the circulation passage is connected to a rotary joint located above the ice thermal storage tank, and a branch is connected to the rotary joint. The pipes are attached radially and extend above the surface of the brine stored in the ice storage tank, and each branch pipe is fitted with a spray nozzle, so that the direction of spray from the nozzle is the same around the rotary joint and for the branch pipes. An ice heat storage facility, characterized in that the brine from the circulation passage is directed diagonally downward by a wall and falls as small droplets from a spray nozzle onto the surface of the brine. 2. The rotary joint consists of a flange-shaped packing fixed to the pipe end of the circulation passage, a rotor that circumscribes the packing and can rotate coaxially with the packing, and a flange protruding from a part of the rotor that connects to a ball. It consists of a holder that is rotatably supported through the packing and a holder that is sandwiched between the packing and the packing.
A brine passage passes through the rotor, one end of the brine passage communicates with the circulation passage through the packing, and the other end of the brine passage opens radially in the circumferential direction of the rotor and communicates with a branch pipe. An ice heat storage facility according to claim 1.