Container type generator set applied to computing power center

Abstract

The invention relates to the technical field of computing power center power generation devices, in particular to a container type generator set applied to a computing power center. Comprising a box body, a mounting platform is arranged on the lower portion of the inner side of the box body, an arc-shaped shielding layer is connected to the upper portion of the mounting platform, four continuous heat exchange cavities are formed between the shielding layer and the box body, the heat exchange cavities are filled with cooling liquid, and the four heat exchange cavities are a heat exchange cavity, a heat insulation cavity, a cooling cavity and a storage cavity in sequence; the heat exchange cavity is provided with a partition plate, the partition plate divides the heat exchange cavity into an outer heat exchange cavity body and an inner heat exchange cavity body, the outer heat exchange cavity body is connected with a cooling system of the computing power center, and the inner heat exchange cavity body is arranged on the outer side of the shielding layer. Four continuous heat exchange cavities are formed, the cavities are filled with cooling liquid, and layered transfer and storage of heat are systematically achieved.

Description

A containerized generator set for use in computing centers Technical Field

[0001] This invention relates to the field of power generation equipment technology for computing centers, specifically a containerized generator set applied to computing centers. Background Technology

[0002] As the scale and computing density of computing centers continue to increase, the heat dissipation and energy efficiency issues of their supporting backup power generation facilities are becoming increasingly prominent. Traditional containerized generator sets mostly use simple air cooling or direct liquid cooling methods for heat dissipation, which often suffers from uneven heat dissipation, significant energy waste, and high noise levels. Especially in high heat flux density scenarios like computing centers, if the large amount of heat generated by the generator sets during operation cannot be dissipated in a timely and efficient manner, it will not only shorten the service life of the power generation equipment but may also affect the stable operation of the entire computing system.

[0003] Therefore, this application provides a containerized generator set for use in computing centers to solve the problems of low cooling efficiency and high energy consumption in existing computing centers and containerized generator sets, which also cannot meet the needs of efficient heat exchange and energy saving in compact spaces. Summary of the Invention

[0004] To address the above problems, this invention provides a containerized generator set for use in computing centers.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a containerized generator set applied to a computing center, including a container, an installation platform provided on the lower inner side of the container, a plurality of inclined generator positions provided on the installation platform, generators arranged along the generator positions, an arc-shaped shielding layer connected to the upper part of the installation platform, and four continuous heat exchange cavities formed between the shielding layer and the container, the interior of the heat exchange cavities being filled with coolant, the four heat exchange cavities being sequentially a heat exchange cavity, a heat insulation cavity, a cooling cavity, and a storage cavity; the heat exchange cavities are equipped with partition plates, the partition plates dividing the heat exchange cavities into an outer heat exchange cavity and an inner heat exchange cavity, the outer heat exchange cavity being connected to the cooling system of the computing center, and the inner heat exchange cavity being located outside the shielding layer.

[0006] As an optimization, a positioning plate is disposed on the inner side of the shielding layer, and a cooling interlayer is formed between the positioning plate and the shielding layer. An air inlet is disposed at one end of the cooling interlayer, and an air outlet is disposed at the other end of the cooling interlayer. Both the air inlet and the air outlet are equipped with fans. A spray module and a drying module are disposed inside the cooling interlayer. Hot air from the inside of the shielding layer enters the cooling interlayer through the air inlet, comes into efficient contact with the coolant, flows through the drying module to dry, and finally flows back to the inside of the shielding layer through the air outlet.

[0007] As an optimization, the spray module includes a spray pipe and several spray heads. The outer end of the spray pipe is connected to the interior of the heat exchange chamber, and the other end of the spray pipe is laid on the top of the cooling jacket. The spray heads are connected to the spray pipe. The drying module includes a spindle-shaped drying sponge, which is vertically rotated and positioned inside the cooling jacket. The outer side of the cooling jacket is curved, and the inner side is vertical. The outer side of the drying sponge is in contact with the curved surface. The distance between the axis of the drying sponge and the vertical surface is less than the minimum thickness of the drying sponge. The side of the drying sponge adjacent to the curved surface is in an extended state to absorb moisture from the air, while the side of the drying sponge adjacent to the vertical surface is squeezed to drain water. A drain pipe is provided at the bottom of the cooling jacket, and the outer end of the drain pipe extends into the interior of the heat exchange chamber.

[0008] As an optimization, the heat exchange chamber and the cooling chamber are vertically opposite to each other on both sides of the generator. The heat insulation chamber and the storage chamber are respectively located on the upper and lower sides of the installation platform. A connecting pipe is provided between two adjacent heat exchange chambers. The width of the heat insulation chamber gradually decreases from top to bottom, and the width of the storage chamber gradually increases from top to bottom. Both the storage chamber and the cooling chamber are equipped with several semiconductor coolers.

[0009] As an optimization, the contact surfaces of the heat exchange cavity, cooling cavity, and shielding layer are all arc-shaped.

[0010] As an optimization, the external heat exchange cavity is a vertically arranged strip-shaped cavity. The interior of the external heat exchange cavity is provided with a horizontal adjusting plate and a vertical driving screw. The adjusting plate is threadedly connected to the driving screw. The water outlet pipe of the computing center cooling system is connected to the lower part of the external heat exchange cavity, and the water inlet pipe of the computing center cooling system is connected to the upper part of the external heat exchange cavity. A water suction pipe is arranged between the lower part of the external heat exchange cavity and the storage cavity.

[0011] As an optimization, several support feet are provided between the bottom of the installation platform and the inner ground of the box.

[0012] As an optimization, the axis of the drying sponge is equipped with a drive motor, and the drying sponge and the spray module are located between the air inlet and the air outlet.

[0013] The beneficial effects of this solution are as follows: By setting up an installation platform with an arc-shaped shielding layer, four continuous heat exchange chambers are formed, which can effectively isolate the generator operating noise. The chambers are filled with coolant, systematically achieving stratified heat transfer and exchange. The heat exchange chambers are directly connected to the cooling system of the computing center, efficiently dissipating the large amount of heat generated by the generator set and preventing heat accumulation. The insulation chambers isolate heat from the upper side of the enclosure, while the cooling chambers are located at the bottom of the enclosure, reducing contact with external heat and maintaining a lower temperature, further enhancing the system's active temperature control capability and significantly improving the overall system energy efficiency. The generator set installation platform is arranged at an angle, and the integrated layout of the heat exchange structure using the chambers between the shielding layer and the enclosure results in a compact structure, particularly suitable for confined spaces such as shipping containers. The various chambers are connected by connecting pipes to form a complete coolant circulation path. The heat exchange chamber and cooling chamber are positioned opposite each other on both sides of the generator to facilitate the uniform and timely removal of heat, while reducing interference with other equipment inside the enclosure. A cooling interlayer with a spray module, drying sponge and fan is set inside the shielding layer, which can actively cool and dehumidify the hot and humid air around the generator set. The spindle-shaped design of the drying sponge combined with the rotating structure can realize automatic circulation of moisture adsorption and squeeze drainage, keeping the air dry and further improving heat dissipation efficiency. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the present invention in use.

[0015] Figure 2 is a schematic diagram of the internal structure of the present invention.

[0016] Figure 3 is a front view schematic diagram of the internal structure of the present invention.

[0017] Figure 4 is a schematic diagram of the AA cross-section structure of Figure 3 of the present invention.

[0018] Figure 5 is an axial view of the present invention.

[0019] Figure 6 is a schematic diagram of the front view of the present invention.

[0020] Figure 7 is a schematic diagram of the BB cross-sectional structure of Figure 6 of the present invention.

[0021] Figure 8 is a schematic diagram of the CC cross-section structure of Figure 6 of the present invention.

[0022] Figure 9 is a schematic diagram of the DD cross-sectional structure of Figure 7 of the present invention.

[0023] The components are as follows: 1. Housing; 2. Mounting platform; 3. Generator position; 4. Shielding layer; 5. External heat exchange chamber; 6. Internal heat exchange chamber; 7. Insulation chamber; 8. Cooling chamber; 9. Storage chamber; 10. Positioning plate; 11. Cooling interlayer; 12. Air inlet; 13. Air outlet; 14. Spray pipe; 15. Spray head; 16. Drying sponge; 17. Drain pipe; 18. Connecting pipe; 19. Semiconductor cooler; 20. Drive screw; 21. Adjustment plate; 22. Water suction pipe; 23. Support foot; 24. Drive motor. Detailed Implementation

[0024] As shown in Figures 1-9, a containerized generator set for use in a computing center includes a housing 1. An installation platform 2 is located on the lower inner side of the housing 1. The installation platform 2 has several inclined generator positions 3, with generators positioned along these positions. An arc-shaped shielding layer 4 is connected to the upper part of the installation platform 2. The shielding layer 4 and the housing 1 form four continuous heat exchange cavities, each filled with coolant. The four heat exchange cavities are, in sequence, a heat exchange cavity, an insulation cavity 7, a cooling cavity 8, and a storage cavity 9. Each heat exchange cavity is equipped with a partition plate, dividing it into an outer heat exchange cavity 5 and an inner heat exchange cavity 6. The outer heat exchange cavity 5 is connected to the cooling system of the computing center, and the inner heat exchange cavity 6 is located outside the shielding layer 4.

[0025] The housing 1 has one or both open ends along its length, and the heat exchange chamber is laid along the length of housing 1, with both ends of the heat exchange chamber being closed. Housing 1 is preferably made of weathering steel (such as Q355NH) or galvanized steel plate; the mounting platform 2 can be made of Q235B structural steel or 6061-T6 aluminum alloy, with a rust-proof surface treatment (such as powder coating or hot-dip galvanizing). The generator mounting location can be equipped with standard vibration damping pads (such as GD type rubber vibration dampers) to accommodate diesel or gas generator sets of different power ratings (such as 500kW-2MW series). The generator is fixed to the mounting location with high-strength bolts or special clamps to ensure stable operation.

[0026] The upper part of the mounting platform 2 is connected to the arc-shaped shielding layer 4 by welding or bolting through an arc-shaped support frame. The shielding layer 4 is preferably made of a thin metal plate with high thermal conductivity (such as copper plate), and its outer surface is welded to the inner wall of the box 1 to form four continuous sealed cavities. Each cavity is filled with ethylene glycol aqueous solution or special heat transfer oil as the cooling medium. The four cavities are as follows: heat exchange cavity: divided by a partition plate into an outer heat exchange cavity 5 (connected to the computing center cooling system) and an inner heat exchange cavity 6 (closely attached to the shielding layer 4).

[0027] Insulation cavity 7: Located directly above the installation platform 2, it is wider at the top and narrower at the bottom, forming an air insulation layer to reduce upward heat transfer.

[0028] Cooling chamber 8 and storage chamber 9 are located on opposite sides below the mounting platform 2. Cooling chamber 8 is wider at the bottom and narrower at the top, while storage chamber 9 is wider at the top and narrower at the bottom. The chambers are connected by a connecting pipe 18 (such as a DN50 stainless steel pipe) with a liquid pump and a solenoid valve, forming a closed loop.

[0029] The shielding layer 4 is made of copper plate (2-3mm thick) or 5052 aluminum alloy plate (3-4mm thick); the cavity wall panel is made of 304 stainless steel plate welded together.

[0030] As shown in Figure 2, the inner side of the shielding layer 4 is disposed on the positioning plate 10, and a cooling interlayer 11 is formed between the positioning plate 10 and the shielding layer 4. One end of the cooling interlayer 11 is provided with an air inlet 12, and the other end of the cooling interlayer 11 is provided with an exhaust outlet 13. Both the air inlet 12 and the exhaust outlet 13 are provided with fans. The interior of the cooling interlayer 11 is provided with a spray module and a drying module. The hot air inside the shielding layer 4 enters the interior of the cooling interlayer 11 through the air inlet 12, comes into efficient contact with the coolant, flows through the drying module for drying, and finally flows back to the inside of the shielding layer 4 through the exhaust outlet 13.

[0031] The inner side of the shielding layer 4 is fixed with a positioning plate 10 by a bracket or welding to form a cooling interlayer 11 with the shielding layer 4. The positioning plate 10 has perforations for installing fans. One end of the cooling interlayer 11 is provided with an air inlet 12 and the other end is provided with an air outlet 13, on which axial flow fans (model T35-11) are installed respectively.

[0032] As shown in Figures 2 and 3, the spray module includes a spray pipe 14 and several spray heads 15. The outer end of the spray pipe 14 is connected to the interior of the heat exchange chamber, and the other end of the spray pipe 14 is laid on the top of the cooling jacket 11. The spray heads 15 are connected to the spray pipe 14. The drying module includes a spindle-shaped drying sponge 16, which is vertically rotated inside the cooling jacket 11. The outer side of the cooling jacket 11 is an arc surface, and the inner side is a vertical surface. The outer side of the drying sponge 16 is in contact with the arc surface. The distance between the axis of the drying sponge 16 and the vertical surface is less than the minimum thickness of the drying sponge 16. The side of the drying sponge 16 adjacent to the arc surface is in an extended state to absorb moisture from the air, and the side of the drying sponge 16 adjacent to the vertical surface is squeezed to drain water. A drain pipe 17 is arranged at the bottom of the cooling jacket 11, and the outer end of the drain pipe 17 extends into the interior of the heat exchange chamber.

[0033] Spray pipes 14 are laid on the top of the interior of the cooling interlayer 11, with the spray heads 15 facing downwards. A spindle-shaped drying sponge 16 (made of hydrophilic modified polyurethane foam) is installed in the middle of the interlayer, and its axis is connected to a geared motor to drive it to rotate slowly (1-5 rpm).

[0034] The hot air generated by the generator is drawn into the cooling jacket 11 by the fan. The spray head 15 sprays coolant droplets that come into direct contact with the air for heat exchange. The moisture in the air is absorbed by the drying sponge 16. The sponge rotates to the side in contact with the vertical surface and is squeezed. The moisture flows back to the heat exchange chamber through the bottom drain pipe 17. The dried and cooled air is sent back to the equipment area through the exhaust port 13.

[0035] The fan can be selected from the Foshan Nanhai Jiuzhou Puhui fan series; the spray head 15 is a stainless steel spiral atomizing nozzle; the drying sponge 16 is made of polyurethane with an open area of ​​over 90%.

[0036] As shown in Figures 3 and 7, the heat exchange chamber and cooling chamber 8 are vertically arranged opposite each other on both sides of the generator. The heat insulation chamber 7 and storage chamber 9 are respectively arranged on the upper and lower sides of the mounting platform 2. A connecting pipe 18 is provided between two adjacent heat exchange chambers. The width of the heat insulation chamber 7 gradually decreases from top to bottom, and the width of the storage chamber 9 gradually increases from top to bottom. Both the storage chamber 9 and the cooling chamber 8 are equipped with several semiconductor coolers 19.

[0037] As shown in Figure 3, the contact surfaces of the heat exchange cavity, cooling cavity 8 and shielding layer 4 are all arc-shaped.

[0038] The connection surfaces between the heat exchange chamber, cooling chamber 8 and shielding layer 4 are all arc-shaped, which increases the contact area between each heat exchange chamber and shielding layer 4 and improves the heat exchange effect.

[0039] As shown in Figure 7, the external heat exchange cavity 5 is a vertically arranged strip-shaped cavity. Inside the external heat exchange cavity 5, there is a horizontal adjusting plate 21 and a vertical driving screw 20. The adjusting plate 21 and the driving screw 20 are threadedly connected. The water outlet pipe of the computing center cooling system is connected to the lower part of the external heat exchange cavity 5, and the water inlet pipe of the computing center cooling system is connected to the upper part of the external heat exchange cavity 5. A water suction pipe 22 is arranged between the lower part of the external heat exchange cavity 5 and the storage cavity 9.

[0040] The external heat exchange chamber 5 is a vertical strip-shaped cavity, inside which is installed an adjustable plate 21 (stainless steel plate) that can move up and down. The adjustable plate 21 is connected to a vertical drive screw 20 by a thread, and the top of the drive screw 20 is connected to a servo motor. The water outlet pipe of the external cooling system is connected to the lower part of the external heat exchange chamber 5 (with a quick connector), and the water inlet pipe is connected to the upper part. The bottom of the external heat exchange chamber 5 is connected to the storage chamber 9 via a water suction pipe 22.

[0041] The regulating plate 21 is in contact with the inner wall of the external heat exchange cavity 5 and is sealed. When the regulating plate 21 moves along the height direction of the external heat exchange cavity 5, it can push the coolant to circulate between the external heat exchange cavity 5 and the computing center cooling system.

[0042] The drive screw 20 can be selected from the SFU series ball screw; the servo motor can be selected from the Panasonic MINASA6 series; the pipe fittings use 304 stainless steel quick couplings (such as German EMB).

[0043] As shown in Figure 3, several support feet 23 are provided between the bottom of the installation platform 2 and the inner ground of the box 1.

[0044] As shown in Figure 4, the drying sponge 16 has a drive motor 24 mounted on its axis, and the drying sponge 16 and the spray module are located between the air inlet 12 and the air outlet 13.

[0045] Instructions for use: When using this device, hoist the container to the designated area of ​​the computing center and adjust the bottom of container 1 to ensure it is level and stable.

[0046] Multiple generators are fixed sequentially on the mounting platform 2 according to their tilt angles, and fuel lines, exhaust pipes and electrical wiring are connected.

[0047] Connect the inlet and outlet water pipes of the external heat exchange chamber 5 to the external cooling circulation system of the computing center to ensure a tight seal and no leakage.

[0048] Add sufficient coolant (such as ethylene glycol solution) through the injection port of storage chamber 9, and start the circulation pump to remove air.

[0049] Turn on the control power, set the target temperature of the semiconductor cooler 19 (e.g., 15-20℃), and start the fan and the drive motor 24 of the drying sponge 16.

[0050] Start the generator load test and observe the temperature difference of each cavity, the temperature difference of the inlet and outlet water, and the changes in air temperature and humidity of the cooling jacket 11. The coolant is circulated between the external heat exchange cavity 5 and the cooling system of the computing center by the regulating plate 21 to improve the heat exchange effect.

[0051] During operation, the high-temperature coolant in the cooling system of the computing center flows into the outer heat exchange chamber 5, exchanges heat with the coolant in the inner heat exchange chamber 6, and then flows back towards the computing center. A fan drives airflow inside the enclosure 1, causing hot air to enter the cooling jacket 11 through the air inlet 12. The hot air is then sprayed and cooled by the spray nozzles 15, and subsequently discharged after passing through the drying sponge 16. This process cools and dries the hot air, promotes air circulation inside the enclosure 1, and accelerates heat exchange. The coolant flows through the inner heat exchange chamber 6 and simultaneously exchanges heat and cools the outer heat exchange chamber 5 and the cooling jacket 11. Then the coolant flows into the insulation chamber 7. The coolant level does not exceed 1 / 2 of the height of the insulation chamber 7, so that an air insulation layer is formed on the upper side of the coolant to isolate the heat from sunlight and other sources on the upper part of the box 1 and reduce the overall temperature of the box 1. The coolant flows into the cooling chamber 8 through the insulation chamber 7 and is cooled by the semiconductor cooler 19. Finally, the coolant flows into the storage chamber 9 for later use.

[0052] The coolant inside the storage chamber 9 is used to circulate and replenish the inner heat exchange chamber 6 and the outer heat exchange chamber 5, ensuring the continuity of heat exchange in the equipment.

[0053] This application constructs a four-cavity integrated coolant circulation system of "heat exchange, heat insulation, cooling and storage" inside the container through the arc shielding layer 4, forming a "shielded heat storage, heat exchange and heat insulation" composite cooling system integrated around the generator. This realizes the directional and layered transfer of heat from the generator to the external cooling system, solving the problems of long paths and low efficiency in traditional heat dissipation solutions.

[0054] This application sets up a cooling interlayer 11 integrating spray cooling and drying sponge 16 inside the shielding layer 4, so as to realize active cooling and dehumidification of the hot and humid air around the generator set. According to the structural characteristics and installation position, the water in the drying sponge 16 can be automatically squeezed and recycled, and the recycled water can be reintroduced into the coolant circulation, which breaks through the technical bottleneck of uncontrollable humidity and easy corrosion of equipment in traditional spray systems.

[0055] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the product form and style of the above-described specific embodiments. Any containerized generator set applied to a computing center that conforms to the claims of the present invention, and any appropriate changes or modifications made to it by a person skilled in the art, shall fall within the patent protection scope of the present invention.

Claims

1. A containerized generator set for use in a computing center, comprising a container (1), wherein an installation platform (2) is provided on the lower inner side of the container (1), and the installation platform (2) is provided with a plurality of inclined generator positions (3), wherein generators are arranged along the generator positions (3), characterized in that: The upper part of the installation platform (2) is connected to an arc-shaped shielding layer (4). The shielding layer (4) and the box (1) form four continuous heat exchange cavities. The interior of the heat exchange cavities is filled with coolant. The four heat exchange cavities are, in order, a heat exchange cavity, a heat insulation cavity (7), a cooling cavity (8), and a storage cavity (9). The heat exchange cavity is equipped with a partition plate, which divides the heat exchange cavity into an outer heat exchange cavity (5) and an inner heat exchange cavity (6). The outer heat exchange cavity (5) is connected to the cooling system of the computing center, and the inner heat exchange cavity (6) is located on the outside of the shielding layer (4).

2. The containerized generator set for use in a computing center according to claim 1, characterized in that: The inner side of the shielding layer (4) is provided on the positioning plate (10), and a cooling interlayer (11) is formed between the positioning plate (10) and the shielding layer (4). One end of the cooling interlayer (11) is provided with an air inlet (12), and the other end of the cooling interlayer (11) is provided with an exhaust outlet (13). Both the air inlet (12) and the exhaust outlet (13) are provided with fans. The interior of the cooling interlayer (11) is provided with a spray module and a drying module. The hot air inside the shielding layer (4) enters the interior of the cooling interlayer (11) through the air inlet (12), comes into efficient contact with the coolant, flows through the drying module to dry, and finally flows back to the inside of the shielding layer (4) through the exhaust outlet (13).

3. A containerized generator set for use in a computing center according to claim 2, characterized in that: The spray module includes a spray pipe (14) and several spray heads (15). The outer end of the spray pipe (14) is connected to the interior of the heat exchange chamber, and the other end of the spray pipe (14) is laid on top of the cooling jacket (11). The spray heads (15) are connected to the spray pipe (14). The drying module includes a spindle-shaped drying sponge (16), which is vertically rotated and positioned inside the cooling jacket (11). The outer side of the cooling jacket (11) is an arc surface. The inner side is a vertical surface, and the outer side of the dry sponge (16) is in contact with the curved surface. The distance between the axis of the dry sponge (16) and the vertical surface is less than the minimum thickness of the dry sponge (16). The side of the dry sponge (16) adjacent to the curved surface is in a stretched state to absorb moisture from the air. The side of the dry sponge (16) adjacent to the vertical surface is squeezed to drain water. A drain pipe (17) is provided at the bottom of the cooling interlayer (11), and the outer end of the drain pipe (17) extends into the interior of the heat exchange cavity.

4. A containerized generator set for use in a computing center according to claim 1, characterized in that: The heat exchange chamber and cooling chamber (8) are vertically opposite to each other on both sides of the generator. The heat insulation chamber (7) and storage chamber (9) are respectively located on the upper and lower sides of the mounting platform (2). A connecting pipe (18) is provided between two adjacent heat exchange chambers. The width of the heat insulation chamber (7) gradually decreases from top to bottom, and the width of the storage chamber (9) gradually increases from top to bottom. Both the storage chamber (9) and the cooling chamber (8) are equipped with several semiconductor coolers (19).

5. A containerized generator set for use in a computing center according to claim 1, characterized in that: The contact surfaces of the heat exchange cavity, the cooling cavity (8) and the shielding layer (4) are all arc-shaped.

6. A containerized generator set for use in a computing center according to claim 1, characterized in that: The external heat exchange cavity (5) is a vertically arranged strip-shaped cavity. The external heat exchange cavity (5) is equipped with a horizontal adjustment plate (21) and a vertical drive screw (20). The adjustment plate (21) and the drive screw (20) are threadedly connected. The water outlet pipe of the computing center cooling system is connected to the lower part of the external heat exchange cavity (5), and the water inlet pipe of the computing center cooling system is connected to the upper part of the external heat exchange cavity (5). A water suction pipe (22) is arranged between the lower part of the external heat exchange cavity (5) and the storage cavity (9).

7. A containerized generator set for use in a computing center according to claim 1, characterized in that: Several support feet (23) are provided between the bottom of the installation platform (2) and the inner ground of the box (1).

8. A containerized generator set for use in a computing center according to claim 3, characterized in that: The drying sponge (16) has a drive motor (24) mounted on its axis, and the drying sponge (16) and the spray module are located between the air inlet (12) and the air outlet (13).

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