KR100404066B1 - System Of Cooling Using Stored Ice Slurry - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heat storage cooling, a cooling apparatus, and the like, and relates to a fluid ice storage and cooling system designed and manufactured to have high load followability during generation and high density storage of fluid ice and heat cooling with heat storage material.

To this end, in the present invention, the fluid ice maker has a structure in which the shell side of the vertical multi-tube heat exchanger is filled with refrigerant to circulate nuclear fuel, and the tube side circulates ice storage by circulating the regenerated water. It is characterized by the installation of a wiper and a wiper driving device that can improve the heat conduction efficiency by forming a vortex in the prevention of freezing and regenerative water circulation.

The system relates to an ice heat storage system using fluid ice formed by a method of installing a refrigerator and a component for fluid ice making and a heat exchange device for efficient storage and cooling of the present invention.

Description

System of Cooling Using Stored Ice Slurry}

The present invention relates to an ice heat storage system that is used to reduce power use in the energy field and load balancing of power generation facilities. The ice heat storage system is classified into a static ice making method and a dynamic ice making method according to the ice making method. The conventional technique is to refine the ice and mix and store it in an aqueous solution to which water or a cryoprotectant is added, and to use heat energy by exchanging heat with high temperature circulating water if necessary. Cooled and iced by the evaporative heat of the liquid refrigerant on the outside of the tube while flowing along the inner wall of the tube heat exchanger, the ROD installed in the tube was stirred at 700 ~ 800RPM to form fine ice cubes and discharged to the bottom of the tube and stored in the heat storage tank installed at the bottom. Orbital rod evaporator that exchanges heat with the load .

This method requires durability and vibration problems due to the high-speed rotation of the mechanical rotating part, and the driving part is destroyed when the concentration of the regenerative water changes and the supercooling degree in the pipe is large even during normal operation. Due to the high price and high cost is a disadvantage.

In addition, when the aqueous solution containing the freezing agent is added to the inside of the cylindrical heat exchanger in which the liquid coolant jacket is installed on the outside at high speed, the aqueous solution is pushed to the inner wall of the heat exchanger by centrifugal force to form a thin temperature boundary layer at high speed and high pressure. There is a dynamic direct method in which the ice formed by supercooling due to heat transfer is scraped into a scraper and stored in a heat storage tank, and then heat-exchanged with the load side if necessary, but this method has a disadvantage in that the machine itself becomes larger due to the required heat transfer surface size.

The present invention improves structurally stable operation and durability by mechanically simplifying the mechanical moving part to solve the problems of the prior art, and is divided into eighths when the driving load is transferred to the subordinate gear from the driving gear interlocking with the driving motor. Each subordinate gear group has a separate drive load transmission system to minimize frictional loss of drive load due to interlocking interference between subordinate gears, thus maintaining high heat transfer efficiency and energy use efficiency, and also for maintenance and management. Its purpose is to provide a low cost fluid ice storage and cooling system by improving the system performance coefficient without the need for technology and inherently failure of the device due to freezing.

1 is a circuit diagram showing a fluid ice storage system of the present invention.

Figure 2 is a cross-sectional view showing the internal configuration of the flow ice ice making device of the present invention.

Figure 3 is a heat exchanger tube arrangement of the flow ice ice maker of the present invention.

Fig. 4 is a structural diagram of a wiper installed in the flow ice maker of the present invention. <Description of the main symbols in the drawings> 1: refrigerant compressor 2: cooling water pump 3: cooling tower and freezer 4: high pressure receiver 5: compressor suction gas superheater 6 DESCRIPTION OF REFERENCE NUMERALS 7 expansion valve 7 ice maker 8 heat storage water circulation pump 9 low pressure water receiver 10 heat storage water pump 11 heat exchanger 12 three-way valve 13 cold water pump 14 spray nozzle 15 heat storage tank 21 water chamber 22 Wiper 23 ice making Tube 24: Vertical tubular heat exchanger 25: Drive motor 26: Regenerative water inlet 27: Water distribution plate 31: Drive gear 32, 33: Dependent gear 34: Center line 41: Drive gear 42 42: Whip Scraper Part43: Fixed pin

The configuration and operation of the present invention by the accompanying drawings in detail as follows.

In the flowable ice storage cooling system applied to the present invention, a drive motor 25 is provided on the upper part of the water chamber 21 of the vertical shell-and-tube heat exchanger 24, and a wiper 22 installed in the ice making tube 23 is provided. The drive gear 31 is interlocked by the drive motor 25 to perform slurry slurry scraping while the regenerative water is whipped and the drive gear 31 is interlocked with the drive motor 25. The subordinate tooth groups of eight groups are arranged around the subordinate tooth groups, and the subordinate tooth groups form an isosceles right triangle on the center line 34 and are arranged as interlocking tooth groups that can install one subordinate tooth for each intersection of the effective diameters. In order to facilitate the transmission of the driving load, the drive gear 31 uses a gear larger than the effective diameter of the dependent gear, and divides the effective diameter of the driving gear into 8 equal to 45 ° to center the center of the dependent gear belonging to each of the dependent gear groups. This P (Pitch) × P × The slave gears 32 and 33 use a spur gear 41 made of synthetic resin of low density poly ethylene (LDPE) so as to enable oil-free operation of the friction part. A hole is formed in the regenerated water, and a key groove for fastening the rectangular flat plate scraper part 42 is provided at the lower portion of the spur gear, and the rectangular flat plate scraper part by the fixing pin 43 is provided. (42) is fastened to the key groove to form an integral follower. FIG. 1 is a schematic diagram of a fluid ice storage and cooling system according to the present invention. Condensed into cooling water circulating through the cooling tower and the freezer (3) by the pump (2) and stored in the high pressure fluid (4).

The stored high-temperature and high-pressure refrigerant liquid is supercooled by the compressor suction gas superheater (5) by the opening of the expansion valve (6), throttles in the expansion valve (6), enters the ice maker (7), and evaporates and accumulates the heat storage water circulation pump (8). The heat exchanged with the heat storage water circulated to the ice maker 7 by), it becomes a high-temperature refrigerant gas after cooling or ice making, and is recovered to the low pressure liquid receiver (9).

The refrigerant recovered in the low pressure liquid receiver (9) is separated by gas liquid and the refrigerant liquid is recycled, and the refrigerant gas is secondly evaporated from the compressor suction gas superheater (5) to be sucked into the refrigerant compressor (1) as a complete gas and recompressed. Condensation forms a refrigeration cycle.

The heat storage water in the heat storage tank 15 is pressed into the ice maker 7 by the heat storage circulation pump 8 and enters the ice making pipe 23 through the central flow path provided in the wiper 22 in the water chamber 21 of FIG. 2. Goes. Wiper 22 refers to Wiper Assy.

The heat storage water distributed to the ice making pipe 23 of FIG. 2 does not fall freely, but forms a vortex by the rotation of the wiper 22 while contacting the inner wall of the ice making pipe 23 by centrifugal force to make the ice ice, It falls to the heat storage tank 15 of 1, and is stored as fluid ice.

The heat storage water stored in the heat storage tank 15 of FIG. 1 is transferred to the heat storage water pump 10 by the heat storage water pump 10 at the time of the cooling load and is circulated by the cold water pump 13. The flow rate is controlled by the temperature condition of the load side, and the surplus amount is bypassed and recycled to the heat exchanger 11, and the heat accumulating water having a high temperature passes through the spray nozzle 14 installed above the heat storage tank 9, and inside the heat storage tank 9. It is reused as it becomes a low temperature by heat exchange while thawing the ice on the upper side.

Referring to the embodiment of the present invention of Figure 2 as follows.

FIG. 2 is a detailed view of the ice maker 7 of FIG. 1. The vertical shell and tube heat exchanger 24 of FIG. 2 includes a wiper 22, a water chamber 21, and a driving motor 25 in a tube 23. It is designed to create floating ice by attaching a lamp.

Wiper 22 of Figure 2 is a specially designed and manufactured material and shape of the geared scraping is inserted into the tube 23 and rotated at an appropriate speed by the gear mounted on the drive motor 25 to the heat storage inlet 26 When the pressurized heat accumulating water flows down to the ice making pipe 23 through the flow path formed in the center of the wiper 22, it generates vortices in a right direction to increase the fold rate in the ice making pipe 23, and the generated flow ice is freely dropped by gravity. However, it was also designed to scrape off the ice chips attached during freezing.

FIG. 3 is a tube arrangement diagram of the ice making heat exchanger of FIG. 1, which is accurate, noise and vibration of the wiper 22 of FIG. 2 mounted on the tube 23 of FIG. It is designed to minimize ideal rotational frictional resistance as an important element of this free drive.

The content of the invention of FIG. 3 is as follows.

The driving gear of FIG. 3 is a flat gear 31 of M3-40Z-PCD120, and its effective diameter is 120 than that of the slave gear 32 of M3-18Z-PCD54 in order to smoothly drive the plurality of slave gears 32. As shown in FIG. A flat gear that is as large as / 54 times is used, and the external gear of the driving gear 31 is divided into eight equal parts at 45 ° from the center to form a group of eight gear groups, and a plurality of slave gears (32, 33,...) Each arrangement is designed to interlock with the drive gear 31. The PCD (Pitch.Circle.Diameter) refers to the effective diameter of the gear. 3, if the effective angle of the gears 360 ° is divided into eighth degrees at 45 ° centering on the driving gear 31 in the center, P (Pitch) × P × It is possible to arrange according to the equation of.

The dependent gear 32 of FIG. 3 is a flat gear of M3-18Z-PCD54, and the group of the dependent gear 33 linked to the drive gear 31 is 4 PCD x 4 PCD x on the center line 34. It is designed as an interlocking gear group structure that forms an isosceles right triangle and installs one dependent gear at each intersection of 1 PCD.

This dependent structure is defined as PCD × PCD × Since there is a formula, the driving load of the driving gear is divided and transferred to the dependent gear, and when the driving load is divided into 8 equal parts when the driving load is transferred from the driving gear to the dependent gear, each of the dependent gear groups has a separate driving load transmission system. Unlike the subordinate gear groups divided into 8 equal parts as in the present invention, the frictional losses of the driving load due to the interlocking interference between the subordinate gears generated by a plurality of subordinate gears linked together at the same time are minimized. According to the present invention, failure of one group of dependent gears does not affect the operation of another group of dependent gears, thereby greatly extending the life of the floating ice maker and greatly reducing maintenance costs.

Accordingly, the tube arrangement of the heat exchanger for flowable ice making of FIG. 3 is a driving structure of the wiper, and a plurality of wipers are designed to drive the geared moter accurately and have a low load driving force in the ice making tube without noise and vibration.

FIG. 4 is a structural diagram of a wiper installed in the floating ice maker of the present invention. The drive gear 41 of the wiper of FIG. 4 is formed of M3-18Z-P.C.D54.

The whip scraper part 42 of FIG. 4 is assembled by the fixing pin 43 of the drive gear part 41 in the shape of a long plate of 5t x 38 W x 1264L. The whip scraper part 42 refers to the plate of the whiper itself.

The material of the wiper of FIG. 4 does not cause insulation corrosion with the ice making tube 23 of FIG. 2 and uses a strong wear-resistant synthetic resin capable of self lubrication. The self lubrication is a kind of automatic lubrication device that can be operated without lubrication in the friction part.

According to the present invention, in order to smoothly drive the dependent gears 32, the transmission of the drive load is carried out using a drive gear of a flat gear having an effective diameter of 120/54 times larger than the slave gear 32 of the M3-18Z-PCD54. To facilitate, the external portion of the drive gear 31 is divided into eight equal to 45 degrees from the center to form a group of eight gear groups, and the plurality of slave gears 32, 33,... 31) PCD × PCD × Since there is a formula, the driving load of the driving gear is divided and transferred to the dependent gear, and when the driving load is divided into 8 equal parts when the driving load is transferred from the driving gear to the dependent gear, each of the dependent gear groups has a separate driving load transmission system. Unlike the subordinate gear group divided into 8 parts as in the present invention, a plurality of subordinate gears are grouped together into a group, thereby minimizing frictional losses of the driving load due to interlocking interference between the subordinate gears. With energy efficiency and structural stability and simplicity, it has a wide range of application for building cooling and industrial cooling system, which gives electric service providers of national infrastructure industries to ease the burden of new power generation equipment investment and operate efficient power generation facilities according to facility load leveling. Reduced investment in cooling and cooling facilities for electric users and electricity bills using midnight power The ease of burden is expected to have a big effect on the rationalization of energy use.

Claims (3)

A drive motor 25 is provided above the water chamber 21 of the vertical tubular heat exchanger 24, and a wiper 22 installed in the ice making tube 23 is driven by the drive motor 25. 31) In the fluid ice-ice deicing device characterized in that the regenerated water is whipped (Wiping) and the resulting slurry scraping (Slurry Scraping) is interlocked, 8 subordinate gear groups are arranged around the drive gear 31 interlocked with the drive motor 25, and the subordinate gear groups form an isosceles right triangle on the center line 34 and have 1 subordinate point for each effective diameter intersection. Arranged in the interlocking gear group that can install the gear, the drive gear 31 uses a gear larger than the effective diameter of the dependent gear to facilitate the transmission of the driving load to the dependent gear, the effective diameter of the drive gear to 45 ° The center of the subordinate gears belonging to each subordinate gear group is divided into 8 equal parts (P (Pitch) × P ×). Is located in, The slave gears 32 and 33 use spur gears 41 made of synthetic resin of low density poly ethylene (LDPE) to enable oil-free operation of the friction part. A hole for flowing is formed, and a key groove for fastening the rectangular flat plate scraper part 42 is provided in the lower portion of the spur gear, and the rectangular flat plate scraper part 42 is fixed by the fixing pin 43. Floating ice deicing device, characterized in that the fastening to the key groove to form an integral follower. delete delete