Please select the most similar patent number from A, B, C and D. Which number is?
A drying system for a nursing bottle cleaning machine and a nursing bottle cleaning machine. The drying system comprises: a draught fan (1), which is used for supplying air to a washing chamber of a nursing bottle cleaning machine and into a nursing bottle that is in position inside of the washing chamber; a lower air duct, wherein the draught fan (1) is disposed inside of the lower air duct, an air inlet of the lower air duct communicates with an air inlet of the draught fan, and an air outlet of the lower air duct communicates with an air outlet of the draught fan; a side air duct, which is provided with a vertical extension segment, wherein an air inlet of the side air duct communicates with the air outlet of the lower air duct, and traverses the vertical extension segment to communicate with an air outlet of the side air duct; and an inner air duct (18), which is mounted inside of the washing chamber, wherein an air inlet of the inner air duct (18) communicates with the air outlet of the side air duct, and an air outlet of the inner air duct extends into a nursing bottle mouth. The present drying system enhances the drying effect at an interior of a nursing bottle, and is not only beneficial in reducing the area of projection of the nursing bottle cleaning machine, but may also effectively prevent or lessen the amount of water or mist inside of the washing chamber that flows out along the air ducts.
A: Disclosed is a smoke extraction and dust removal apparatus, comprising a casing (1). The casing (1) is provided with an exhaust port, the exhaust port is in communication with an air inlet of an inner air duct (11), the inner air duct (11) is mounted in a pressurized air cavity (12), a lower end of the pressurized air cavity (12) is connected to an outer edge of the air inlet of the inner air duct (11), and an upper end of the pressurized air cavity (12) is in communication with an outer air pipe (22); and an air-exhausting device (13) capable of radially exhausting air in the inner air duct (11) so as to form negative pressure in the inner air duct (11) and thus facilitate the intake of smoke and dust into the inner air duct is mounted on a lower end wall face of the inner air duct (11), air located between the inner air duct (11) and the pressurized air cavity (12) is pressurized so as to rapidly flow to the outer air pipe (22) at the same time as negative pressure is produced in the inner air duct (11) by means of the air-exhausting device (13), and the pressurized air drives the air in the inner air duct (11) to be rapidly exhausted to the outer air pipe (22). The apparatus has a simple structure, is convenient to manufacture, install and maintain, and can work for a long time without cleaning.
B: A combustion flue gas supply device includes a furnace body. A combustion chamber (5) is arranged in the furnace body. A combustion tray (6) is provided in the combustion chamber (5). A lower air cavity (7) for air intake is arranged at the underside of the combustion tray (6). A perpendicular material feeding device (12) is arranged at the bottom of the furnace body. The inlet of the perpendicular material feeding device (12) is connected with the outlet of a horizontal material feeding device (10). The outlet of the perpendicular material feeding device (12) is communicated with the combustion chamber (5) at the lower air cavity (7) and the combustion tray (6). The side wall of the combustion chamber (5) is composed of an outer wall (21), a middle wall (23) and an inner wall (24). An inner layer air channel between the inner wall (24) and the middle wall (23) is connected with main air intake fans (3, 22). Multiple air intake nozzles (20) with vertically distributed air spraying axes are arranged on the inner wall (24) to communicate with the inner layer air channel and the combustion chamber (5). An outer layer air channel between the outer wall (21) and the middle wall (23) is connected with an air curtain fan (8), and the inlet of the air curtain fan (8) is arranged at the lower portion of the outer layer air channel. The upper end of the outer layer air channel is communicated with the top of the combustion chamber (5), and a de-slagging device is arranged corresponding to the combustion tray (6). The device is used for generating hot flue gas. The furnace body has small volume, flexible arrangement, sufficient combustion, and high thermal efficiency, and automatic fuel supplying and de-slagging can be achieved.
C: A dish washer drying system (100) and a dish washer (1000). The dish washer drying system (100) comprises a lining (10), a heat exchange apparatus (20), a first air duct (30) in communication with the lining (10) and the heat exchange apparatus (20), a second air duct (40) in communication with the heat exchange apparatus (20) and with the atmosphere outside, and a switching apparatus (50). The heat exchange apparatus (20) is mounted outside of the lining (10). A first flow channel (21) and a second flow channel (22) are provided within the heat exchange apparatus (20). A first fan (31) is provided on the first air duct (30). A second fan (41) is provided on the second air duct (40). The switching apparatus (50) is used for putting the first flow channel (21) in communication with alternately the first air duct (30) and the second air duct (40) and used for putting the second flow channel (22) in communication with alternately the second air duct (40) and the first air duct (30). The dish washer (1000) comprises the dish washer drying system (100). The drying system (100) is capable of effectively condensing and removing hot and humid air, thus implementing highly efficient drying of the lining (10).
D: Disclosed are a heat pump clothes dryer and a control method for the heat pump clothes dryer. The heat pump clothes dryer comprises a drum (2), a heat pump system (4), a fan (3) and a ventilation assembly (5), wherein the heat pump system (4) comprises an air duct, a condenser (42) and an evaporator (43); the air duct comprising a first part (A2) in communication with a hot humid air outlet (21) of the drum (2) and an air inlet of the evaporator (43); and the ventilation assembly (5) is mounted on the first part (A2) of the air duct, and the ventilation assembly (5) is provided with an air intake hole (52) and an air output hole (55) which are capable of being opened and closed, the air intake hole (52) being used for introducing cold air outside the air duct into the first part (A2), and the air output hole (55) being used for discharging some of hot humid air inside the first part (A2). By means of the arrangement, the ventilation assembly (5) can guide cold air into the air duct and/or exhaust the hot humid air in the first part (A2) of the air duct, so as to reduce the temperature of the hot humid air exchanging heat with a refrigerant in a pipeline of the evaporator (43), thereby reducing the temperature of the exhaust air of a compressor (41), and preventing the compressor (41) from being repeatedly started and stopped due to overload.
Answer: C