KR200217849Y1 - Orbital Whip Rod Evaporator for Ice Storage System - Google Patents

Abstract

The present invention relates to an evaporator for cooling the heat storage medium by absorbing heat from the heat storage medium by evaporation of the refrigerant. The evaporator (1) of the present invention, the evaporator tube elongated up and down to provide a space for the refrigerant to pass through and the refrigerant evaporation (10); A plurality of heat transfer tubes 20 which are accommodated in the evaporation tube 10 in a vertical direction and surrounded by the evaporation tube 10 so that the heat of the heat storage medium is transferred to the refrigerant as the heat storage medium passes; A plurality of whip rods 30 which are orbitally moved in the state of being inserted into each of the heat transfer tubes 20 to leave the heat storage medium frozen on the inner wall of the heat transfer tube 20; A driving plate 40 coupled to the upper ends of the whip rods 30 to orbit the whole whip rod 30 integrally; A plurality of universal joints 50 which freely support the driving plate 40 on the evaporation tube 10; Drive means (60) for orbiting the drive plate (40); And a rod inserting hole 71 inserted into an upper end of the heat transfer tube 20 to be rotated by an orbital motion of the whip rod 30, and the rod insertion hole 71 inserted into the eccentric position and the heat storage medium. At least one heat storage medium passage hole 72 is formed, and the heat storage medium rotating plate 70 forms a vortex in the heat storage medium flowing into the heat transfer tube 20 as the heat storage medium rotating plate 70 rotates. );

Description

Orbital Whip Rod Evaporator for Ice Storage System

(Technology)

The present invention relates to an evaporator of an ice heat storage system, and more particularly, to an evaporator having a whip rod orbiting as an evaporator for absorbing heat from the heat storage medium to make the heat storage medium drift ice as the refrigerant evaporates.

(Background)

In general, ice storage equipment generates ice using low-cost surplus electricity in the late night time and stores it in the storage tank, and then cools it using the storage tank's ice when the power load is high. Such ice storage equipment reduces energy costs. As one of the measures which can be taken, it is attracting wide attention.

6 is a block diagram of a conventional ice storage device. As shown, the conventional ice storage device 100 includes a cooling tower 110, a cooler 120, a heat storage tank 130, an air conditioner 140, and the like. Passes the refrigerant cooled by the cooler 120 to the installed coil 150 to form ice on the outside of the coil 150, and during thawing, cools the ice by flowing water to the outside of the coil 150 to thaw the ice. Will be.

However, such a conventional ice heat storage device, due to the heat insulating action of the ice film as the ice film is generated on the outer surface of the coil 150 while the refrigerant cooled into the coil 150 of the heat storage tank 130 during ice making. There was a problem of lowering the heat transfer efficiency.

FIG. 7 is a block diagram of another conventional ice heat storage device which improves the disadvantages of FIG. 6, FIG. 8 is a perspective view of the evaporator applied to FIG. 7, and FIG. 9 is a sectional view of FIG. As shown in FIGS. 7 to 9, the conventional ice storage device 200 includes an outer tube 212 through which a refrigerant passes through an evaporator 211 of the cooler 210 and an inner tube 213 through which a heat storage medium passes. The inner side of the inner tube 213 is provided with a rotary wiper 214 scraping the ice film generated on the inner wall surface by continuously removing the ice film can prevent the degradation of the heat transfer efficiency mentioned above to some extent. .

That is, the gas refrigerant of the high temperature and high pressure compressed by the compressor 220 of the cooler 210 changes state into a liquid refrigerant while passing through the condenser 230, and the refrigerant passing through the condenser 230 may inject the injector 240. The pressure drops rapidly while passing, and the liquid refrigerant whose pressure is dropped passes through the outer tube 212 of the evaporator 211 to absorb and evaporate heat of the heat storage medium. Then, the heat storage medium is frozen on the inner wall surface of the inner tube 213, at which time the wiper 214 rotates to leave the heat storage medium frozen on the inner wall surface of the inner tube 213 from the wall surface. The drift ice-like heat storage medium made by this process is supplied to the heat storage tank and used for cooling.

As described above, in the case of using the evaporator 211 of FIGS. 7 to 9, the heat transfer efficiency may be reduced due to the same reason as mentioned in FIG. 6. Since 213 is composed of only one, there is a problem in that its surface area is small and its performance is limited. In FIG. 7, reference numerals 250, 260, 270, and 280 denote cooling towers, air conditioners, heat exchangers, and heat storage tanks, respectively.

As a conventional evaporator which overcomes the problems of the evaporator 211 of FIG. 8, there is an evaporator 300 shown in FIG. 10 having an orbital whip rod registered February 11, 2000 (Utility Model Registration No. 179623). ). The evaporator 300 is installed between a heat storage tank (not shown) for storing a predetermined heat storage medium, a compressor (not shown) for compressing a refrigerant, and a condenser (not shown) for condensing the refrigerant, and provides a refrigerant supplied from the condenser. By evaporating to absorb the heat of the heat storage medium is to make the heat storage medium in the drift ice state and send to the heat storage tank.

The evaporator 300 of FIG. 10 is connected to the heat storage tank to allow passage of the heat storage medium and a plurality of heat transfer tubes 310 for transferring heat from the heat storage medium to the refrigerant, and is connected between the compressor and the condenser. An evaporation tube 320 and a heat transfer tube 310 which are respectively provided inside the heat transfer tube 310 to surround the plurality of heat transfer tubes 310 and provide a space in which the refrigerant may be evaporated to absorb heat of the heat storage medium. A number of holes 351 for rotating the counter crank 330, a plurality of whip rod 340 for leaving the frozen heat storage medium on the inner wall of the heat transfer tube 310 while orbiting through the counter crank 330 ) Is configured to include a driving plate 350, an eccentric crank 360 eccentrically connected to the driving plate 350, and a driving motor 370 for driving the eccentric crank 360.

Therefore, while the low-temperature refrigerant moves through the evaporation tube 320 and evaporates, the heat storage medium passing through the heat transfer tube 310 is cooled. At this time, the operation of the driving motor 370 and the rotation and driving of the eccentric crank 360 are performed. Eccentricity of the counter crank 330 through the circular motion of the counter crank 330 through the orbital movement of the plate 350, the coupling of the hole 351 of the drive plate 350 and the protrusion 331 of the counter crank 330 Each of the whip rods 340 in the position to scratch the inner wall of each heat transfer tube 310 while orbiting along a predetermined trajectory, and eventually the heat storage medium frozen on the inner wall surface of each heat transfer tube 310 The heat transfer tube 310 is separated from the inner wall surface and flows down the inner wall surface in the drift ice state.

The evaporator 300 of FIG. 10 uses a plurality of heat transfer tubes 310 to increase the contact area with the refrigerant relative to the previous one, thereby improving heat transfer performance and increasing the amount of drift ice generated. The advantage is that.

However, the evaporator 300 of FIG. 10 will orbitally move according to the rotation of the counter crank 330 while the whip rods 340 are fitted to the counter crank 330 made of a plastic synthetic resin molded body. Since the driving force of) is transmitted to the circular motion of the counter crank 330 through the combination of the hole 351 and the protrusion 331 of the counter crank 330, a large load will be applied to the counter crank 330. In addition, the whip rod 340 is accompanied by a bad vibration or vibration in addition to the orbital movement, and there is a problem that frequently occurs due to the breakage of the counter crank 330 and the driving plate 350. .

An object of the present invention is a new structure that can orbitally support a whip rod and form a natural vortex in a heat storage medium flowing into the evaporator in an evaporator having an orbital moving whip rod as described above. Is to provide.

1 is a schematic exploded perspective view of an orbital whip rod evaporator according to the present invention;

Figure 2 is a partial cutaway perspective view of the heat transfer tube showing the action of the whip rod,

3 is a cross-sectional view showing the mounting position of the connecting portion of the whip rod and the heat storage medium rotating plate;

4 is a view showing the mounting position and the connection of the universal joint,

5 is a plan view of the heat storage medium rotating plate,

6 is a block diagram of a conventional ice storage device,

7 is a block diagram of another exemplary ice storage device in the prior art;

Figure 8 is a perspective view of the evaporator applied to Figure 7,

9 is a cross-sectional view of FIG. 8;

10 is an exploded perspective view of yet another exemplary evaporator of the prior art.

<Description of the reference numerals for the main parts of the drawings>

10: evaporation tube 20: heat transfer tube

30: whip rod 40: drive plate

50: universal joint 60: drive means

70: heat storage medium rotating plate

According to the present invention, there is provided an evaporator for cooling the heat storage medium by absorbing heat from the heat storage medium by evaporation of the refrigerant.

The evaporator of the present invention, an evaporation tube which evaporates as the refrigerant passes, heat transfer tubes surrounded by the evaporation tube and allowing heat to be transferred to the refrigerant when the heat storage medium passes, freezing on the inner wall of each heat transfer tube Whip rods deviating from the heat storage medium, a drive plate for causing the whip rods to orbitally move, a plurality of universal joints for freely supporting the drive plate to the evaporator, drive means for orbiting the drive plate, And a heat storage medium rotating plate which is rotated by the orbital motion of the whip rod to form a vortex in the heat storage medium.

The universal joint may be used to form a ball joint in the ball and the socket by fixing the upper bar with a ball formed on the lower side with a nut to the drive plate and the lower bar formed with a socket on the upper side of the evaporation tube, Preferably, five universal joints are arranged on the upper surface of the evaporation tube in a crisscross shape.

Hereinafter, an orbital whip rod evaporator according to the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are merely illustrative of the orbital whip rod evaporator according to the present invention, and are not intended to limit the scope of the present invention.

Figure 1 is a schematic exploded perspective view of an orbital whip rod evaporator according to the present invention, Figure 2 is a partial cutaway perspective view of the heat transfer tube showing the action of the whip rod, Figure 3 is a cross-sectional view showing the mounting portion of the whip rod and the heat storage medium rotating plate 4 is a view showing the mounting position and connection of the universal joint, Figure 5 is a plan view of the heat storage medium rotating plate.

The evaporator 1 of the present invention is a device for cooling the heat storage medium by allowing the refrigerant evaporating in the ice heat storage system described with reference to FIG. 6 to absorb heat from the heat storage medium, and basically, a single evaporation tube 10 and a plurality of heat transfers. The tube 20, a plurality of whip rods 30, a drive plate 40, a plurality of universal joints 50, a drive means 60, and a heat storage medium rotating plate 70 are configured.

The evaporation tube 10 is a tube causing evaporation as the refrigerant passes, and as shown in FIG. 1, the evaporation tube 10 is elongated up and down to provide a space for the refrigerant to evaporate. The evaporator tube 10 is provided with a lower refrigerant inlet 11 and an upper refrigerant outlet 12. The refrigerant from the condenser is introduced into the refrigerant inlet 11 to cause evaporation in the evaporator tube 10, The heat is absorbed and sent back to the compressor through the refrigerant outlet (12).

In the evaporation tube 10, a plurality of heat transfer tubes 20 are accommodated in the longitudinal direction and surrounded by the evaporation tube 10. The heat transfer tube 20 is a passage through which the heat storage medium passes, and the heat storage medium of the heat transfer tube 20 takes away heat while the refrigerant in the evaporation tube 10 evaporates and is cooled. That is, the heat storage medium introduced through the heat storage medium inlet 21 above the heat transfer pipe 20 passes through the heat transfer pipe 20, and then the heat storage medium outlet 22 under the heat transfer pipe 20. The heat accumulating medium deprived of heat in this process is discharged to the heat accumulating medium outlet 22 in the form of ice slurry (driving ice), which is sent to the heat storage tank and used for cooling.

A whip rod 30 is inserted into each heat transfer tube 20 so as to orbitally move, and the whip rod 30 scrapes down the frozen heat storage medium on the inner wall of the heat transfer tube 20 to flow down. It works. That is, as shown in FIG. 2, the whip rod 30 freezes the inner wall of the heat transfer tube 20 to scrape off the heat storage medium ice film IF, which lowers the heat transfer rate.

The whip rod 30 performs one orbital motion along the inner wall of the heat transfer tube 20, and the orbital motion is driven by the driving plate 40. 1 and 3, the upper end of the whip rod 30 is coupled to the drive plate 40. The combination of the whip rod 30 and the drive plate 40 is not particularly limited as long as the orbital motion of the drive plate 40 can be transmitted to the orbital motion of the whip rod 30. For example, a screw is formed at an upper end of the whip rod 30 and a whip rod mounting hole 41 is formed in the driving plate 40 corresponding to the mounting position of the whip rod 30, thereby forming the whip rod mounting hole ( The whip rod 30 may be coupled to the driving plate 40 by inserting an upper end of the whip rod 30 into the nut 41 to fasten the nut 31. At this time, the drive plate 40 and the whip rod 30 is coupled with a margin to accommodate the flow of the orbital whip rod 30, preferably the nut 31 is to prevent the loosening 2 Fasten using dogs. Reference numeral 32 denotes a washer.

The driving plate 40 is driven to orbitally move the plurality of whip rods 30, and the driving plate 40 is supported by the evaporation tube 10 by the plurality of universal joints 50. That is, as shown in Figures 1 and 4, the universal joint 50 is installed between the evaporation tube 10 and the drive plate 40, the evaporation pipe ( 10) Hold on. The universal joint 50 is not particularly limited as long as it is a support structure that can flexibly allow the drive plate 40 to orbitally move in a constant trajectory, and as shown in FIG. 4, an upper bar having a ball 52 formed thereon. The ball 52 and the socket (50) are fixed to the driving plate 40 with the nut 53 and the lower bar 54 having the socket 55 formed thereon is fixed to the upper side of the evaporation tube 10. It is possible to use a ball-and-socket connection structure such that 55) forms a freely rotatable joint at any angle. Reference numeral 56 denotes a rubber protective cover which protects the ball-socket connection structure.

The number of universal joints 50 is sufficient to keep the driving plate 40 in balance, and as shown in FIG. 4, four are arranged at the same angle (90 degrees) at the same distance from the center one. One crisscross arrangement can be used.

The orbital motion of the drive plate 40 is driven by the drive means 60 including the drive motor 61. The cam 62 installed between the drive motor 61 and the drive plate 40 converts the rotational motion of the drive motor 61 into the orbital motion of the drive plate 40.

It is known that the heat storage medium flowing through the heat transfer tube 20 flows along the inner wall of the heat transfer tube 20 while forming a vortex in terms of heat transfer efficiency. To this end, the evaporator 1 of the present invention includes a heat storage medium rotating plate 70 causing vortices in the heat storage medium flowing into the heat transfer tube 20.

3 and 5, the heat storage medium rotating plate 70 includes at least one heat storage medium passage in which the rod insertion hole 71 into which the whip rod 30 is inserted in the eccentric position and the heat storage medium pass through the heat storage medium. The hole 72 is formed and is rotatably inserted in the upper end of the heat transfer pipe 20. Therefore, as the whip rod 30 orbits in the heat transfer tube 20, the heat storage medium rotating plate 70 rotates itself at the top of the heat transfer tube 20, and thus the heat storage medium rotates in the heat storage medium rotating plate 70. The vortex flows into the heat transfer tube 20 through the heat storage medium passage hole 72 while causing the vortex by the rotation of. The rod insertion hole 71 is preferably formed in a slit shape that is slightly elongated to have a certain flow tolerance with respect to the orbital motion of the whip rod 30.

According to the configuration of the present invention evaporator 1 described above, the refrigerant absorbs heat from the heat storage medium passing while forming a vortex through the heat transfer tube 20 disposed therein while the refrigerant moves through the evaporation tube 10 and evaporates. To cool the heat storage medium. In this process, the driving plate 40 supported by the universal joint 50 performs orbital movement according to the driving of the driving means 60 having the cam 62, and the driving plate 40 again becomes a whip rod ( As the orbital motion 30 is carried out, the whip rod 30 scrapes off the ice film IF formed on the inner wall of the heat transfer tube 20, thereby continuously storing heat storage medium of the heat transfer tube 20 while maintaining high heat transfer efficiency. Drift ice will be made through the outlet (22).

As described above, in the evaporator 1 according to the present invention, the whip rod 30 is directly coupled to the driving plate 40 so as to orbitally move, and the driving plate 40 is orbitally moved by a plurality of universal joints 50. By being able to be supported, the orbital motion power transmission is made very robust and flexible, thus eliminating the problems associated with the durability of the use of the counter crank 330 in the conventional evaporator 300 shown in FIG.

The whip rod evaporator 1 according to the present invention described above, orbital movement of the whip rod 30 to the drive plate 40 and the drive plate 40 by orbital motion by a plurality of universal joints 50. By adopting a structure that possibly supports, the overall orbital power transmission from the drive plate 40 to the whip rod 30 is very robust and flexible, thereby improving the overall durability of the evaporator 1.

In addition, the whip rod evaporator 2 of the present invention is such that the rod insertion hole 71 and the heat storage medium passage hole 72 rotate the heat storage medium rotating plate 70 formed in the eccentricity by the orbital motion of the whip rod 30. By inserting the upper end of the heat transfer tube 20 to form a natural vortex in the heat storage medium supplied to the heat transfer tube 20, there is also an effect that can further improve the heat transfer efficiency between the refrigerant and the heat storage medium.

Claims (2)

An evaporator for cooling the heat storage medium by absorbing heat from the heat storage medium by evaporation of a refrigerant, An evaporator tube (10) elongated up and down to provide a space for the refrigerant to pass and for the refrigerant to evaporate; A plurality of heat transfer tubes 20 which are accommodated in the evaporation tube 10 in a vertical direction and surrounded by the evaporation tube 10 so that the heat of the heat storage medium is transferred to the refrigerant as the heat storage medium passes; A plurality of whip rods 30 which are orbitally moved in the state of being inserted into each of the heat transfer tubes 20 to leave the heat storage medium frozen on the inner wall of the heat transfer tube 20; A driving plate 40 coupled to the upper ends of the whip rods 30 to orbit the whole whip rod 30 integrally; A plurality of universal joints 50 which freely support the driving plate 40 on the evaporation tube 10; Drive means (60) for orbiting the drive plate (40); And a rod inserting hole 71 inserted into an upper end of the heat transfer tube 20 to be rotated by an orbital motion of the whip rod 30, and the rod insertion hole 71 inserted into the eccentric position and the heat storage medium. At least one heat storage medium passage hole 72 is formed, and the heat storage medium rotating plate 70 forms a vortex in the heat storage medium flowing into the heat transfer tube 20 as the heat storage medium rotating plate 70 rotates. Evaporator comprising a .; The upper rod 51 of claim 1, wherein the whip rod 30 has an upper end thereof coupled to the driving plate 40 with a nut 31, and the universal joint 50 has a ball 52 formed at a lower side thereof. ) Is fixed to the driving plate 40 with a nut 53 and the lower bar 54 having the socket 55 formed on the upper side thereof is fixed to the upper side of the evaporation tube 10 to the ball 52 and the socket 55. The spherical joint is formed on the evaporator, and the universal joint is composed of five crosshairs arranged on the upper surface of the evaporation tube.