Evaporator of cooling device

Abstract

To solve the problems that in three types of evaporators for a conventional cooling device, i.e., a fin coil type, a dry shell-and-tube type, and a flooded shell-and-tube type, all of the three types employ a pipe having a small diameter so that the heat exchange efficiency is poor, the fin coil type requires a large number of blades to be fixed to the pipe, which requires a high manufacturing cost, and the other two types require use of a large number of pipes, which requires a high manufacturing cost.SOLUTION: A spray nozzle for spraying a refrigerant liquid is incorporated in a cooling box to cool the cooling box. Cold air in the cooling box is absorbed by a shielding plate to cool the periphery of the cooling box. Holes are formed in the shielding plate, and the bottom surface and the ceiling of the cooling box. When warm gas (hereinafter referred to as a warm gaseous body) passes through the holes provided in the shielding plate, the bottom surface, and the ceiling, the warm gaseous body is cooled by the shielding plate, etc. A heat slinger is provided around the cooling box to cool the warm gaseous body.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] In the present invention, a plurality of refrigerant liquid inlet pipes 40 through which refrigerant liquid flows into the cooling box 10 and a plurality of refrigerant liquid outlet pipes 50 through which refrigerant liquid flows out of the cooling box 10 are provided, a spray nozzle 30 is fixed to the refrigerant liquid inlet pipes 40, and a plurality of shielding plates 60 each having a plurality of shielding plate ventilation holes 70 are built into the cooling box 10, and the shielding plates 60 are arranged at intervals so that the refrigerant liquid sprayed from the spray nozzles 30 flows to the refrigerant liquid outlet pipes 50 without stagnating between the shielding plates 60.

[0002] A plurality of bottom ventilation holes 71 are provided on the bottom surface of the cooling box 10 and a plurality of ceiling ventilation holes 72 are provided on the ceiling surface, and the positions of the shielding plate ventilation holes 70, the bottom ventilation holes 71 and the ceiling ventilation holes 72 are aligned, so that warm gas that flows into the bottom ventilation holes 71 from the bottom surface flows out through the shielding plate ventilation holes 70 and the ceiling ventilation holes 72.

[0003] A plurality of vertical bottom heat sinks 21 are fixed in the vertical direction to the bottom surface of the cooling box 10, and a plurality of horizontal bottom heat sinks 22 are fixed in the horizontal direction, and the vertical bottom heat sinks 21 and the horizontal bottom heat sinks 22 are installed so as to cross the bottom ventilation holes 71, a plurality of vertical ceiling heat sinks 23 are fixed in the vertical direction to the ceiling surface of the cooling box 10, and a plurality of horizontal ceiling heat sinks 24 are fixed in the horizontal direction, and the vertical ceiling heat sinks 23 and the horizontal ceiling heat sinks are installed so as to cross the ceiling ventilation holes 72, and side heat sinks 25 are fixed to the east-west side surfaces of the cooling box 10.

[0004] The surrounding warm gas is cooled by the cooling box 10, the bottom vertical heat sink 21, the bottom horizontal heat sink 22, the ceiling vertical heat sink 23, the ceiling horizontal heat sink 24, and the side heat sink 25, and when the warm gas flows from the bottom ventilation hole 71 through the shielding plate ventilation hole 70 and out of the ceiling ventilation hole 72, the shielding plate 60, the bottom vertical heat sink 21, the bottom horizontal heat sink 22, the ceiling vertical heat sink 23, and the ceiling horizontal heat sink 24 absorb the heat of the warm gas, causing it to become cold gas and be cooled. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2023-69923 [Patent Document 2] Patent Publication No. 2021-167681 [Patent Document 3] Patent Publication No. 2021-113654 [Background technology]

[0006] Conventional evaporators for cooling systems include fin coil type, flooded shell-and-tube type, and dry shell-and-tube type.

[0007] The fin coil system is composed of a heat dissipation pipe 100 and a plurality of heat dissipation plates 20, in which a refrigerant liquid flows through the heat dissipation pipe 100 and a plurality of heat dissipation plates 20 are fixed to the heat dissipation pipe 100, and the heat of the warm gas is absorbed by the heat dissipation pipe 100 and the heat dissipation plates 20, thereby cooling the warm gas to cool it.

[0008] The dry shell and tube system is composed of a tube 130, a refrigerant liquid inlet pipe 40, a refrigerant evaporation outlet pipe 50, a warm gas inlet pipe 110, a cold gas outlet pipe 120, a warm gas heat absorption tube 140, and a refrigerant liquid outlet pipe 150. The refrigerant liquid flows out of the tube 130 via the refrigerant liquid inlet pipe 40, the warm gas heat absorption tube 140, the refrigerant liquid outlet pipe 150, and the refrigerant evaporation outlet pipe 50, while the warm gas flows into the tube 130 from the warm gas inlet pipe 110 and flows out of the tube 130 via the cold gas outlet pipe 120.

[0009] In addition, in the dry shell-and-tube system, refrigerant liquid is injected from the refrigerant liquid inlet pipe 40 into the warm gas heat absorption tube 140 to cool the inside of the tube 130, absorbing the heat of the warm gas, and the refrigerant liquid evaporates and flows out of the tube 130 through the refrigerant evaporation outlet pipe 50. Warm gas flows into the tube 130 from the warm gas inlet pipe 110, is cooled in the tube 130, and becomes cold gas, which flows out of the tube 130 through the cold gas outlet pipe 120.

[0010] The liquid-filled shell-and-tube system is composed of a tube 130, a refrigerant liquid inlet pipe 40, a refrigerant liquid outlet pipe 50, a warm gas inlet pipe 110, a cold gas outlet pipe 120, a warm gas heat radiation pipe 200, and a cold gas outlet pipe 210, and the tube 130 houses a plurality of warm gas heat radiation pipes 200 and a plurality of cold gas outlet pipes 210.

[0011] In addition, in the liquid-filled shell-and-tube system, refrigerant liquid flows from the refrigerant liquid inlet pipe 40 into the tube 130, cools the inside of the tube 130, evaporates, and flows out of the tube 130 through the refrigerant evaporation outlet pipe 50. Warm gas flows from the warm gas inlet pipe 110 into the warm gas heat dissipation pipe 200, and is cooled by the cooling inside the tube 130, turning the warm gas into cold gas, which flows out of the tube 130 through the cold gas outlet pipe 210. Summary of the Invention [Problem to be solved by the invention]

[0012] In the conventional fin coil system, a refrigerant liquid flows through the heat radiation pipe 100, absorbing the heat of the warm gas around the heat radiation pipe 100 and cooling the warm gas. However, since the contact area between the warm gas and the heat radiation pipe 100 is small, the amount of heat absorbed from the warm gas is small, so it is necessary to fix a large number of heat radiation plates 20 to the heat radiation pipe 100, and this has the disadvantage of being costly to manufacture.

[0013] Furthermore, the fin coil system has a drawback in that the refrigerant liquid flows through the heat radiation pipe 100, so it takes time for the refrigerant liquid flowing through the center of the heat radiation pipe 100 to absorb the heat of the warm gas flowing around the heat radiation pipe 100.

[0014] In the dry shell and tube system, a refrigerant liquid flows through the warm gas heat absorption tube 140, and therefore the contact area between the warm gas heat absorption tube 140 and the warm gas is small, resulting in poor cooling efficiency.

[0015] Furthermore, in the dry shell-and-tube system, if the diameters of the warm gas heat absorption pipe 140 and the refrigerant liquid discharge pipe 150 are large, it takes a long time for the refrigerant liquid flowing through the center of the warm gas heat absorption pipe 140 and the refrigerant liquid discharge pipe 150 to absorb the heat of the warm gas. This means that the diameters of the warm gas heat absorption pipe 140 and the refrigerant liquid discharge pipe 150 must be small, which has the disadvantage that in order to cool a large amount of warm gas, many warm gas heat absorption pipes 140 and refrigerant liquid discharge pipes 150 must be installed.

[0016] In addition, the liquid-filled shell-and-tube system injects refrigerant liquid into the tube 130 to cool the inside of the cooling box 10, and then flows warm gas into the warm gas heat radiation pipe 200 to cool the warm gas. The warm gas is then cooled and becomes cold gas, which then flows into the cold gas discharge pipe 210. However, since the warm gas flows through the center of the warm gas heat radiation pipe 200, it is difficult to cool the warm gas, and the cold gas that has been cooled also flows through the center of the cold gas discharge pipe 210, which has the disadvantage of being difficult to cool.

[0017] In addition, in the liquid-filled shell-and-tube system, since the warm gas flows through the warm gas heat radiation pipe 200, the area for absorbing the cold heat of the refrigerant liquid from the refrigerant liquid flowing through the tube 130 and the surface of the warm gas heat radiation pipe 200 is small, so it takes a long time to cool.In order to cool the warm gas and turn it into cold gas, a large number of warm gas heat radiation pipes 200 through which the warm gas flows must be installed inside the tube 130.Since there are a large number of warm gas heat radiation pipes, a large number of cold gas discharge pipes 210 must also be built inside the tube 130, which is a disadvantage. [Means for solving the problem]

[0018] A plurality of refrigerant liquid inlet pipes 40 through which the refrigerant liquid flows into the cooling box 10 are provided, and a plurality of refrigerant liquid outlet pipes 50 through which the refrigerant liquid flows out of the cooling box 10 are provided. A spray nozzle 30 is fixed to the refrigerant liquid inlet pipes 40, and the diameter of the spray nozzle 30 is smaller than the diameter of the refrigerant liquid inlet pipes 40.

[0019] A plurality of shielding plates 60 built into the cooling box 10 are arranged so that the refrigerant liquid sprayed from the spray nozzle 30 flows into the refrigerant liquid outflow pipe 50 without stagnating therein, and a plurality of vent holes 70 for the shielding plates are provided in the shielding plates 60 through which warm gas flows.

[0020] A plurality of bottom ventilation holes 71 are provided on the bottom surface of the cooling box 10 and a plurality of ceiling ventilation holes 72 are provided on the ceiling surface, and the positions of the holes of the bottom ventilation holes 71, the holes of the shielding plate ventilation holes 70 and the holes of the ceiling ventilation holes 72 are aligned so that warm gas passes through the bottom ventilation holes 71, the shielding plate ventilation holes 70 and the ceiling ventilation holes 72, and the shielding plate 60 absorbs the heat of the warm gas as it passes through, cooling the warm gas to become cold gas.

[0021] A plurality of bottom vertical heat sinks 21 are provided in the vertical direction on the bottom surface of the cooling box 10, and a plurality of bottom horizontal heat sinks 22 are provided in the horizontal direction, and the bottom vertical heat sinks 21 and the bottom horizontal heat sinks 22 are fixed so as to cross below the bottom ventilation holes 71, respectively. A plurality of ceiling vertical heat sinks 23 are provided in the vertical direction on the ceiling surface of the cooling box 10, and a plurality of ceiling horizontal heat sinks 24 are provided in the horizontal direction, and the ceiling vertical heat sinks 23 and the ceiling horizontal heat sinks 24 are fixed to the ceiling surface so as to cross above the ceiling ventilation holes 72. Side heat sinks 23 are fixed to the side surfaces of the cooling box 10, thereby cooling the warm gas flowing around the cooling box 10. [Effects of the Invention]

[0022] By spraying the refrigerant liquid from the spray nozzle 30, a large amount of the sprayed refrigerant liquid turns into fine particles, and all of the sprayed fine particles of the refrigerant liquid absorb the heat inside the cooling box 10, thereby cooling the entire cooling box 10.

[0023] In addition, since the contact area between the cooling box 10 and the warm gases, the bottom vertical heat sink 21, bottom horizontal heat sink 22, ceiling vertical heat sink 23, ceiling horizontal heat sink 24, and side heat sink 25 fixed to the cooling box 10 is large, the cooling heat of the cooling box 10 is quickly transferred to the bottom vertical heat sink 21, bottom horizontal heat sink 22, ceiling vertical heat sink 23, ceiling horizontal heat sink 24, and side heat sink 25, thereby efficiently cooling the warm gases around the cooling box.

[0024] In addition, the heat of the warm gas is absorbed by the shielding plate 60 when passing through the bottom ventilation holes 71, the shielding plate ventilation holes 70, and the ceiling ventilation holes 72, thereby cooling the warm gas to cold gas, which has the effect of providing more cooling than cooling around the cooling box 10. [Brief explanation of the drawings]

[0025] [Figure 1] Cross-sectional view of the cooling box 10 [Figure 2] Plan view of the cooling box from the bottom [Figure 3] Plan view of the cooling box from the ceiling [Figure 4] A perspective view of the cooling box 10 [Figure 5] Finned coil type evaporator (a) Longitudinal cross section of finned coil type (b) Radial cross section of finned coil type [Figure 6] Dry shell-and-tube evaporator (a) Perspective view of dry shell-and-tube system (b) Cross-section (c) Cross-section of warm gas heat absorption tube and refrigerant liquid discharge tube [Figure 7] Flooded shell-and-tube evaporator (a) Perspective view of the flooded shell-and-tube system (b) Cross-section (c) Cross-section of the warm gas heat dissipation pipe and cold gas discharge pipe DETAILED DESCRIPTION OF THE INVENTION

[0026] The refrigerant liquid is sprayed from a nozzle 30 fixed to a refrigerant liquid inlet pipe 40, and the sprayed refrigerant liquid turns into fine particles, which absorb the temperature inside the cooling box 10 and cool the entire cooling box 10.

[0027] As the inside of the cooling box 10 is cooled, the shielding plate 60 and heat sink 20 built into the cooling box 10 are also cooled at the same time, and the refrigerant liquid is cooled by passing through the cooling ventilation holes provided in the cooling box 10 and the ventilation holes 70 for the shielding plate provided in the shielding plate 60. [Explanation of symbols]

[0028] 10 Cooling box 20 Heat sink 21 Bottom vertical heat sink 22 Bottom horizontal heat sink 23 Ceiling vertical heat sink 24 Ceiling horizontal heat sink 25 Side heat sink 30 spray nozzle 40 Refrigerant liquid inlet pipe 50 Refrigerant liquid outflow pipe 60 Shielding plate 70 Ventilation hole for shielding plate 71 Bottom ventilation hole 72 Ceiling ventilation hole 100 Heat sink 110 Warm gas inlet pipe 120 Cold gas outflow pipe 130 tubes 140 Warm gas heat absorption tube 150 Refrigerant liquid discharge pipe 200 Warm gas heat radiation pipe 210 Cold gas exhaust pipe

Claims

[Claim 1] a means for providing a plurality of refrigerant liquid inlet pipes and a plurality of refrigerant evaporation outlet pipes in the cooling box; a means for fastening an injection nozzle to the refrigerant liquid inlet pipe; a means for allowing the refrigerant liquid sprayed from the spray nozzle to flow from the spray nozzle to the refrigerant evaporation and outflow pipe in the cooling box without stagnation, and for providing a plurality of shielding plates arranged at intervals, and for providing a plurality of shielding plate ventilation holes in the shielding plates; a means for providing a plurality of bottom ventilation holes on the bottom surface of the cooling box and a plurality of ceiling ventilation holes on the ceiling surface; a means for aligning the holes of the shielding plate ventilation hole, the bottom ventilation hole, and the ceiling ventilation hole; a means for providing a plurality of vertical bottom heat sinks in the vertical direction of the bottom surface of the cooling box and a plurality of horizontal bottom heat sinks in the horizontal direction, and for the vertical bottom heat sinks and the horizontal bottom heat sinks to cross the bottom cooling box ventilation holes; a means for providing a plurality of vertical ceiling radiator plates in the vertical direction of the ceiling surface of the cooling box and a plurality of horizontal ceiling radiator plates in the horizontal direction, and for the vertical ceiling radiator plates and the horizontal ceiling radiator plates to cross the ceiling ventilation hole; By means of fixing side surface heat sinks to the side surfaces of the cooling box in the east-west, north-south directions, The refrigerant liquid sprayed from the spray nozzle turns into fine particles, and each particle absorbs heat from the cooling box, cooling the entire cooling box and simultaneously cooling the shielding plate, the bottom vertical heat sink, the bottom horizontal heat sink, the ceiling vertical heat sink, the horizontal heat sink, and the side heat sink, thereby cooling the warm gas (hereinafter referred to as warm gas) around the cooling box, and at the same time, cooling the warm gas into cold gas (hereinafter referred to as cold gas) by the cooling box and the shielding plate when the warm gas passes from the bottom ventilation hole through the shielding plate ventilation hole and out the ceiling ventilation hole.

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