Air cooler

Abstract

The present invention relates to an air cooler and, more specifically, to an air cooler capable of minimizing the discharge of moisture. The present invention provides the air cooler comprising: a horizontal case which has a first inlet in through which air flows, a first outlet through which cooled air flows out, and a first discharge port through which moisture removed from the air is discharged, and in which the first inlet and the first outlet are disposed such that the air flowing in through the first inlet flows in the horizontal direction toward the first outlet; a moisture removal plate which extends upward from the bottom surface of the horizontal case between the first inlet and the first outlet of the horizontal case so that the air flowing in the horizontal case collides therewith and which forms a gap, in which the air flows, between the moisture removal plate and the ceiling of the horizontal case, and of which the upper end portion is higher than the first outlet so as to conceal the first outlet; a spray nozzle which is provided between the first inlet of the horizontal case and the moisture removal plate, and which sprays water into the horizontal case; and a fan that forms the flow of air such that the air flows into the first inlet and then flows out through the first outlet.

Description

air conditioner

[0001] The present invention relates to a cooler, and more particularly, to a cooler capable of minimizing the discharge of moisture.

[0002] A fan air cooler is a device that generates cool air by utilizing the heat absorbed when water evaporates. Conventional fan air coolers lower indoor temperatures by spraying water and then using a fan to evaporate the water. However, the use of this type of fan air cooler increases indoor humidity, making it difficult for water to evaporate. While this isn't a major issue in hot, dry regions, in areas with high temperatures and humidity during the summer, this type of fan air cooler can actually increase indoor humidity without significantly lowering the temperature, contributing to discomfort.

[0003] To solve these problems, a cooling fan was developed that cools the water by putting an ice pack or ice in a water tank, condenses the water vapor contained in the indoor air, prevents humidity from rising, and then re-evaporates the water to generate cold air.

[0004] [Prior Art Literature]

[0005] Registered Utility Model No. 20-0433450

[0006] Registered Utility Model No. 20-0433448

[0007] Registered Utility Model No. 20-0492505

[0008] The present invention is intended to improve the above-described problem and to provide a new structured air cooler capable of effectively removing moisture.

[0009] In order to achieve the above-described object, the present invention provides a cooling fan including a horizontal case having a first inlet through which air is introduced, a first outlet through which cooled air is discharged, and a first outlet through which moisture removed from the air is discharged, the first inlet and the first outlet being arranged so that air introduced into the first inlet flows horizontally toward the first outlet; a moisture removal plate extending upward from a bottom surface of the horizontal case between the first inlet and the first outlet of the horizontal case so that air flowing inside the horizontal case collides with the gap between the bottom surface of the horizontal case and the ceiling of the horizontal case, the upper end of which is higher than the first outlet so as to cover the first outlet; a spray nozzle installed between the first inlet of the horizontal case and the moisture removal plate and configured to spray water into the interior of the horizontal case; and a fan for forming an air flow such that air is introduced into the first inlet and discharged out the first outlet.

[0010] In addition, the present invention provides a cooling fan further comprising a first duct connected to a first outlet of the horizontal case, and a horizontal condensation removal ring surrounding the first duct to prevent moisture removed from the air from flowing along the inner surface of the horizontal case to the first duct, one end of which is connected to an end on the outlet side of the horizontal case at a distance from the first duct, and the other end of which is configured to be in close contact with the outer surface of the first duct.

[0011] In addition, the device further includes an auxiliary chamber having a second inlet through which air passing through the horizontal case flows in and a second outlet through which air flows out, the second inlet and the second outlet being arranged so that air flowing in through the second inlet flows toward the second outlet, and a second duct connected to the second outlet, and a cooling fan in which an end of the second duct on the second outlet side extends into the interior of the auxiliary chamber so that moisture flowing along the inner surface of the auxiliary chamber does not flow into the second duct.

[0012] In addition, a cooling fan is provided in which a second discharge port is formed at the bottom of the horizontal condensation removal ring to discharge moisture flowing along the inner surface of the horizontal condensation removal ring.

[0013] In addition, the present invention provides a cooling fan further including a moisture flow prevention plate protruding from the inner surface of the horizontal case and extending along the inner surface of the horizontal case from the ceiling of the horizontal case to both sides of the horizontal case to prevent moisture removed from the air from flowing along the inner surface of the horizontal case to the first outlet.

[0014] In addition, the cross-section of the moisture flow prevention plate provides an L-shaped cooling fan.

[0015] Additionally, the upper part of the moisture removal plate provides a cooling fan that is angled or gently curved toward the first inlet or the first outlet.

[0016] In addition, the first outlet is provided between the moisture removal plate and the first outlet, and an overflow hole is formed at the bottom of the moisture removal plate.

[0017] In addition, the present invention provides a cooling fan, which further includes a vertical auxiliary chamber having a third inlet through which gas passing through the horizontal case flows and a third outlet through which treated gas flows, and in which the third inlet and the third outlet are arranged so that the gas flowing into the third inlet flows vertically toward the third outlet; and a vertical condensation removal ring arranged around a duct coupled to a lower portion of the vertical auxiliary chamber to prevent moisture removed from the gas from flowing downward along the inner surface of the vertical auxiliary chamber, the upper portion of which is coupled to one end of the vertical auxiliary chamber at a distance from the duct coupled to the lower portion, the lower portion of which is configured to be in close contact with the duct coupled to the lower portion, and a fourth outlet formed at the lower portion of the vertical condensation removal ring through which moisture flowing along the inner surface of the vertical condensation removal ring is discharged.

[0018] In addition, the present invention provides a cooling fan having a third inlet through which gas passing through the horizontal case flows and a third outlet through which treated gas flows, and a third inlet and a third outlet arranged so that the gas flowing into the third inlet flows vertically toward the third outlet; a third duct communicating with the upper portion of the vertical auxiliary chamber, the lower end of which is rolled up to form a flow path, the flow path being arranged inside the vertical chamber at a distance from the inner surface of the vertical auxiliary chamber, and a third duct having a fourth outlet formed in the flow path, wherein moisture condensed on the inner surface of the vertical chamber rises along the inner surface of the vertical chamber due to the pressure of the gas flowing in the vertical chamber, flows along the flow path, and is then discharged through the fourth outlet.

[0019] The air conditioner according to the present invention can effectively remove moisture. Therefore, it can prevent the increase in indoor humidity due to the use of the air conditioner as much as possible.

[0020] Figure 1 is a schematic diagram of a cooling fan according to one embodiment of the present invention.

[0021] Figure 2 is a perspective view of a cross-section taken along line AA of Figure 1.

[0022] Figure 3 is a perspective view of a cross-section taken along line BB of Figure 1.

[0023] Figure 4 is a schematic diagram of a cooling fan according to another embodiment of the present invention.

[0024] Figure 5 is a schematic diagram of a cooling fan according to another embodiment of the present invention.

[0025] Fig. 6 is a perspective view of a cross-section taken along line CC of Fig. 5.

[0026] Figures 7 and 8 are schematic diagrams of a cooling fan according to another embodiment of the present invention.

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. However, the embodiments of the present invention may be modified into various other forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings are exaggerated for clarity, and elements indicated by the same reference numerals in the drawings represent the same elements.

[0028] Fig. 1 is a schematic diagram of a cooler according to an embodiment of the present invention. As illustrated in Fig. 1, a cooler (100) according to an embodiment of the present invention includes a horizontal case (10), a moisture removal plate (20), a water tank (30), a first duct (40), a second duct (42), a spray nozzle (50), a horizontal condensation removal ring (60), an auxiliary chamber (70), a moisture flow prevention plate (80), and a cooling fan (90).

[0029] The horizontal case (10) has a first inlet (11) through which air flows in and a first outlet (13) through which cooled air flows out. The air moves generally horizontally from the first inlet (11) toward the first outlet (13). Depending on the installation location of the air cooler (100), indoor or outdoor air can flow in through the first inlet (11).

[0030] A first discharge port (15) is formed on the bottom surface (14) of the horizontal case (10). Moisture removed from the air is discharged to the outside of the horizontal case (10) through the first discharge port (15). The first discharge port (15) may be formed on the bottom surface (14) or may be formed at a low height on a side adjacent to the bottom surface (14). When formed on the side, water is discharged when the water level inside the horizontal case (10) becomes higher than the first discharge port.

[0031] In this embodiment, water overflowing through the overflow hole (25) formed at the bottom of the moisture removal plate (20) is discharged through the first discharge port (15) of the bottom surface (14).

[0032] The moisture removal plate (20) is installed between the first inlet (11) and the first outlet (13) of the horizontal case (10). In the present embodiment, it is placed between the first inlet (11) and the first outlet (15). The moisture removal plate (20) extends upward from the bottom surface (14) of the horizontal case (10).

[0033] The upper portion (21) of the moisture removal plate (20) is bent toward the first inlet (11). As illustrated in FIG. 1, the upper portion (21) of the moisture removal plate (20) may be bent at an angle. For example, it may be inclined at a 45-degree angle. It may also be bent in a gently curved shape. Furthermore, the upper portion (21) of the moisture removal plate (20) may be bent toward the first outlet (13) to guide the flow of air.

[0034] A gap is formed between the top of the moisture removal plate (20) and the ceiling (16) of the horizontal case (10) through which air can pass. The remaining space is blocked by the moisture removal plate (20), so that air moves only through the gap toward the first outlet (13). The top of the moisture removal plate (20) is higher than the first outlet (11). Moisture removed from the air by hitting the moisture removal plate (20) flows downward along the moisture removal plate (20) and is then discharged through the first discharge port (15).

[0035] The water tank (30) is placed at the bottom of the horizontal case (10). The water discharged from the first discharge port (15) is stored in the water tank (30).

[0036] The first duct (40) connects the horizontal case (10) and the auxiliary chamber (70), and guides air discharged from the horizontal case (10) to the auxiliary chamber (70). The second duct (42) is connected to the second outlet (73) of the auxiliary chamber (70).

[0037] The spray nozzle (50) is installed in the space between the first inlet (11) of the horizontal case (10) and the moisture removal plate (20). The spray nozzle (50) is configured to spray water into the interior of the horizontal case (10). The spray nozzle (50) sprays water toward the first outlet (13). The spray nozzle (50) is connected to a water tank (30). A pump (35) is installed to supply water to the spray nozzle (50) in the water tank (30).

[0038] Figure 2 is a perspective view of a cross-section taken along line AA of Figure 1.

[0039] The horizontal condensation removal ring (60) serves to prevent moisture removed from the air from flowing along the inner surface of the horizontal case (10) to the first duct (40).

[0040] As illustrated in Fig. 2, a horizontal condensation removal ring (60) surrounds the first duct (40). One end (61) on the upstream side of the horizontal condensation removal ring (60) is connected to the end on the outlet (13) side of the horizontal case (10) and surrounds the first duct (40) at a gap. The other end (63) on the downstream side is joined to the outer surface of the first duct (40). The other end (63) of the horizontal condensation removal ring (60) is folded toward the first duct (40) and is in close contact with the outer surface of the first duct (40). A second discharge port (65) is formed at the bottom of the horizontal condensation removal ring (60). Moisture flowing along the inner surface of the horizontal case (10) flows downward along the inner surface of the horizontal condensation removal ring (60) and is then discharged along the second discharge port (65). The moisture discharged through the second discharge port (65) is stored in the water tank (30).

[0041] The auxiliary chamber (70) serves to further remove moisture remaining in the air. The auxiliary chamber (70) has a second inlet (71) through which air passing through the horizontal case (10) flows in and a second outlet (73) through which air flows out. The second inlet (71) and the second outlet (73) are arranged in the auxiliary chamber (70) so that air flowing in through the second inlet (71) flows horizontally toward the second outlet (73).

[0042] A second duct (42) is fitted into the second outlet (73). At this time, the end (45) of the second outlet (73) of the second duct (42) extends into the interior of the auxiliary chamber (70). This is to prevent moisture flowing along the inner surface of the auxiliary chamber (70) from flowing into the second duct (42). The moisture flowing along the inner surface of the auxiliary chamber (70) flows along the outer surface of the second duct (42) and then falls downward due to gravity. The fallen water is discharged through the third discharge port (75) formed on the bottom surface of the auxiliary chamber (70). The moisture discharged through the third discharge port (75) is stored in the water tank (30).

[0043] Figure 3 is a drawing of the air cooler illustrated in Figure 1 viewed from the BB direction.

[0044] The moisture flow prevention plate (80) serves to prevent moisture removed from the air from flowing along the inner surface of the horizontal case (10) toward the first outlet (13). The moisture flow prevention plate (80) protrudes from the inner surface of the horizontal case (10). The moisture flow prevention plate (80) extends along the inner surface of the horizontal case (10) from the ceiling (16) of the horizontal case (10) to both sides of the horizontal case (10). As illustrated in FIG. 3, the cross-section of the moisture flow prevention plate (80) may be L-shaped.

[0045] The fan (90) serves to form an air flow so that air flows in through the first inlet (11) and out through the first outlet (13). In this embodiment, the fan (80) is placed on the inlet (11) side of the horizontal case (10).

[0046] Figure 4 is a schematic diagram of a cooling fan according to another embodiment of the present invention.

[0047] The air cooler (200) illustrated in Fig. 4 differs from the embodiment illustrated in Fig. 1 in that the fan (190) is installed inside the second duct (142). In addition, the air cooler (200) differs from the embodiment illustrated in Fig. 1 in that the filling layer (95) is arranged inside the inlet (11) side of the horizontal case (10).

[0048] A filling layer (95) is installed at the rear end of the spray nozzle (50). The filling layer (95) is installed to increase the contact area and time between the outside air supplied by the fan (90) and the water sprayed from the spray nozzle (50), thereby improving the cooling efficiency. The filling layer (95) may be composed of fillings of various geometric shapes and a filling support for supporting the fillings. The filling layer (95) is wetted by the water sprayed from the spray nozzle (50).

[0049] Below, the operation of the above-mentioned air coolers is explained.

[0050] When the air cooler (100, 200) is operated, the fan (90, 190) and the pump (35) of the water tank (30) operate. When the pump (35) operates, water is sprayed from the spray nozzle (50). In the embodiment illustrated in Fig. 4, the water sprayed from the spray nozzle (50) wets the filling layer (95).

[0051] When the fan (90, 190) rotates, a flow of hot air is generated that passes through the cooler (100, 200). Water sprayed from the spray nozzle (50) evaporates upon contact with the hot air. In this process, the surrounding heat is absorbed, lowering the temperature of the air.

[0052] Some of the moisture contained in the air condenses as it passes through the horizontal case (10). The water droplets formed on the surface of the horizontal case (10) fall in front of the moisture removal plate (20) along the moisture flow prevention plate (80). When the water level stored in the horizontal case (10) rises, the water passes through the overflow hole (25) and is discharged through the first discharge port (15). The water discharged through the first discharge port (15) is stored in the water tank (30) and then sprayed again from the spray nozzle (50).

[0053] The moisture that condenses during the process of hitting the moisture removal plate (20) flows downward along the moisture removal plate (20) and is then discharged through the first discharge port (15). The air moves through the gap between the moisture removal plate (20) and the ceiling of the horizontal case (10).

[0054] Air passing through the horizontal case (10) flows into the auxiliary chamber (70). Condensed water droplets in the auxiliary chamber (70) are discharged through the third discharge port (75) formed at the bottom of the auxiliary chamber (70). Since the second duct (42) extends sufficiently into the interior of the auxiliary chamber (70), water droplets formed on the ceiling of the auxiliary chamber (70) do not enter the second duct (42).

[0055] Figure 5 is a schematic diagram of a cooling fan according to another embodiment of the present invention.

[0056] The air cooler (300) according to the embodiment illustrated in FIG. 5 differs from the embodiment illustrated in FIG. 1 in that it further includes a vertical auxiliary chamber (230) coupled to the rear end of the second duct (242), a third duct (244), and a vertical condensation removal ring (250).

[0057] The vertical auxiliary chamber (230) has a third inlet (231) through which gas passing through the horizontal case (10) and the auxiliary chamber (70) flows in, and a third outlet (233) through which the treated gas flows out. The gas flowing in through the third inlet (231) flows generally vertically downward toward the third outlet (233). In the vertical auxiliary chamber (230), moisture that has not yet been removed in the horizontal case (10) and the auxiliary chamber (70) is removed.

[0058] The second duct (242) connects the second outlet (73) of the auxiliary chamber (70) and the third inlet (231) of the vertical auxiliary chamber (230), thereby guiding the gas discharged from the auxiliary chamber (70) to the vertical chamber (230).

[0059] The third duct (244) is connected to the third outlet (233) of the vertical auxiliary chamber (230).

[0060] The vertical condensation removal ring (250) serves to prevent moisture removed from the gas from flowing along the inner surface of the vertical auxiliary chamber (230) to the third duct (244) below.

[0061] Fig. 6 is a perspective view of a cross-section taken along line CC of Fig. 5. As shown in Figs. 5 and 6, a vertical condensation removal ring (250) surrounds a third duct (244). A space through which water can flow is formed between the vertical condensation removal ring (250) and the third duct (244). The upper end (251) of the vertical condensation removal ring (250) is connected to the lower end of the third outlet (233) of the vertical auxiliary chamber (230). The upper end (251) of the vertical condensation removal ring (250) surrounds the third duct (244) at a gap. The lower end (253) of the vertical condensation removal ring (250) is bent toward the third duct (244) and is in close contact with the outer surface of the third duct (244).

[0062] A fourth discharge port (255) is formed at the lower end (253) of the vertical condensation removal ring (250). Moisture flowing along the inner surface of the vertical chamber (230) flows downward along the inner surface of the vertical condensation removal ring (250) and is then discharged through the fourth discharge port (255).

[0063] Figures 7 and 8 are schematic diagrams of a cooling fan according to another embodiment of the present invention.

[0064] The air cooler (400) according to the embodiment illustrated in FIG. 7 differs from the embodiment illustrated in FIG. 5 in that the vertical auxiliary chamber (330) is positioned higher than the horizontal case (10).

[0065] Accordingly, the second duct (342) is bent upward, and unlike the embodiment illustrated in FIG. 5, the upper end (351) of the vertical condensation removal ring (350) is coupled to the lower end of the third inlet (331) side of the vertical auxiliary chamber (330). That is, the configuration of the vertical auxiliary chamber (330) and the vertical condensation removal ring (350) is the same as the embodiment illustrated in FIG. 5, but the direction of the gas flowing through the vertical auxiliary chamber (330) is opposite, and accordingly, the lower opening of the vertical auxiliary chamber (330) becomes the third inlet (331), and the upper opening becomes the third outlet (333).

[0066] The air cooler (500) illustrated in FIG. 8 is similar to the embodiment illustrated in FIG. 7 in that the vertical auxiliary chamber (430) is positioned higher than the horizontal case (10), but has a different structure for removing moisture flowing along the inner surface of the vertical auxiliary chamber (430).

[0067] The lower end (445) of the third duct (442) coupled to the outlet (433) side of the vertical auxiliary chamber (430) is arranged inside the vertical auxiliary chamber (430). The entire lower end (445) is rolled up, so that a flow path (446) is formed in the lower end (445) of the third duct (442). The flow path generally takes the form of an annular or square tube with an open top. The flow path (446) is arranged at a distance from the inner surface of the vertical auxiliary chamber (430).

[0068] Moisture condensed on the inner surface of the vertical auxiliary chamber (430) can rise along the inner surface of the vertical auxiliary chamber (430) due to the pressure of gas flowing from the inlet (431) to the outlet (433) of the vertical auxiliary chamber (430). The risen moisture passes through the gap between the inner surface of the vertical auxiliary chamber (430) and the flow path (446), and falls along the upper surface (432) of the vertical auxiliary chamber (430) and the outer surface of the third duct (442) onto the flow path (446).

[0069] Moisture that has fallen into the euro (446) is discharged through the fourth discharge port (447) formed on the side or bottom surface of the euro (446).

[0070] Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications can be made by a person having ordinary skill in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Furthermore, such modifications should not be understood individually from the technical idea or prospect of the present invention.

[0071] For example, in the embodiment shown in Fig. 1, a filling layer may be placed at the rear end of the injection nozzle (50).

[0072] [Explanation of symbols]

[0073] 100, 200, 300, 400, 500: Air conditioner

[0074] 10: Horizontal case

[0075] 20: Moisture removal plate

[0076] 30: Tank

[0077] 40: Duct 1

[0078] 42, 142, 242, 342, 442: Second duct

[0079] 244, 342, 442: Duct 3

[0080] 50: Injection nozzle

[0081] 60: Horizontal condensation removal ring

[0082] 70: Auxiliary chamber

[0083] 80: Moisture flow prevention valve

[0084] 90: Fan

[0085] 95: Filling layer

[0086] 230, 330, 430: Vertical auxiliary chamber

[0087] 250, 350, 450: Vertical condensation removal ring

Claims

1. A horizontal case having a first inlet through which air flows in, a first outlet through which cooled air flows out, and a first outlet through which moisture removed from the air is discharged, and in which the first inlet and the first outlet are arranged so that air flowing in through the first inlet flows horizontally toward the first outlet; A moisture removal plate extending upward from the bottom surface of the horizontal case between the first inlet and the first outlet of the horizontal case to form a gap through which air flows between the ceiling of the horizontal case and the first outlet, so that the air flowing inside the horizontal case collides with the gap, and the height of the upper part thereof is higher than that of the first outlet so as to cover the first outlet; A spray nozzle installed between the first inlet of the horizontal case and the moisture removal plate, and configured to spray water into the interior of the horizontal case; A cooling fan including a fan that forms an air flow so that air is drawn in through the first inlet and discharged through the first outlet.

2. In paragraph 1, Further comprising a first duct connected to the first outlet of the above horizontal case, A cooling fan further comprising a horizontal condensation removal ring surrounding the first duct, one end of which is connected to an outlet end of the horizontal case at a distance from the first duct, and the other end of which is configured to be in close contact with an outer surface of the first duct, so as to prevent moisture removed from the air from flowing along the inner surface of the horizontal case to the first duct.

3. In paragraph 2, An auxiliary chamber having a second inlet through which air passing through the horizontal case flows in and a second outlet through which air flows out, and in which the second inlet and the second outlet are arranged so that air flowing in through the second inlet flows toward the second outlet; Further comprising a second duct connected to the second outlet, A cooling fan in which the second outlet side end of the second duct extends into the interior of the auxiliary chamber so that moisture flowing along the inner surface of the auxiliary chamber does not flow into the second duct.

4. In paragraph 2, A cooling fan having a second discharge port formed at the bottom of the horizontal condensation removal ring to discharge moisture flowing along the inner surface of the horizontal condensation removal ring.

5. In paragraph 1, A cooler further comprising a moisture flow prevention plate protruding from the inner surface of the horizontal case and extending along the inner surface of the horizontal case from the ceiling of the horizontal case to both sides of the horizontal case to prevent moisture removed from the air from flowing along the inner surface of the horizontal case to the first outlet.

6. In paragraph 5, The cross-section of the above moisture flow prevention plate is an L-shaped air cooler.

7. In paragraph 1, A cooling fan in which the upper part of the moisture removal plate is angled or gently curved toward the first inlet or the first outlet.

8. In paragraph 1, The first outlet is disposed between the moisture removal plate and the first outlet, A cooling fan having an overflow hole formed at the bottom of the above moisture removal plate.

9. In paragraph 1, A vertical auxiliary chamber having a third inlet through which gas passing through the horizontal case flows in and a third outlet through which treated gas flows out, and in which the third inlet and the third outlet are arranged so that the gas flowing into the third inlet flows vertically toward the third outlet; A cooling fan further comprising a vertical condensation removal ring arranged around a duct coupled to a lower portion of the vertical auxiliary chamber to prevent moisture removed from a gas from flowing downward along the inner surface of the vertical auxiliary chamber, the upper portion of which is coupled to one end of the vertical auxiliary chamber at a distance from the duct coupled to the lower portion, the lower portion of which is configured to be in close contact with the duct coupled to the lower portion, and a fourth discharge port formed at the lower portion through which moisture flowing along the inner surface of the vertical condensation removal ring is discharged.

10. In paragraph 1, A vertical auxiliary chamber having a third inlet through which gas passing through the horizontal case flows in and a third outlet through which treated gas flows out, and in which the third inlet and the third outlet are arranged so that the gas flowing into the third inlet flows vertically toward the third outlet; A third duct communicating with the upper part of the vertical auxiliary chamber, the lower part of which is rolled up to form a flow path, the flow path being arranged inside the vertical chamber with a gap from the inner surface of the vertical auxiliary chamber, and the flow path further includes a third duct in which a fourth discharge port is formed, A cooling fan in which moisture condensed on the inner surface of the vertical chamber rises along the inner surface of the vertical chamber due to the pressure of the gas flowing in the vertical chamber, flows along the passage, and is then discharged through the fourth outlet.

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