Manually-adjustable temperature brewing device and constant temperature adjustment method

A manually-adjustable temperature brewing device, comprising a brewing head (1);

• wherein a top of the brewing head (1) is arranged with a combined valve body assembly (2);
• a secondary high-pressure mixing chamber (3) and a tertiary opening and closing chamber (4) are defined in the combined valve body assembly (2);
• the secondary high-pressure mixing chamber (3) is arranged vertically, a side of the secondary high-pressure mixing chamber (3) is arranged with a hot water port (31) and a cold water port (32) sequentially disposed from top to bottom, and another side of the secondary high-pressure mixing chamber (3) is arranged with a mixed water outlet (33) that is at the same height as the hot water port (31), the mixed water outlet (33) being in communication with the tertiary opening and closing chamber (4);
• the tertiary opening and closing chamber (4) is arranged vertically;
• the brewing head (1) is arranged with a solenoid valve (5), and the solenoid valve (5) comprises a water inlet port and a water outlet port;
• the tertiary opening and closing chamber (4) comprises an inlet chamber (41) and an outlet chamber (44);
• the mixed water outlet (33) is in communication with the inlet chamber (41), the inlet chamber (41) is in communication with the water inlet port, and the outlet chamber (44) is in communication with the water outlet port;
• a bottom of the outlet chamber (44) is arranged with an outlet end (45), and the hot water port (31) and the cold water port (32) are each arranged with a flow regulating device;
• the flow regulating device comprises a valve body (6), a primary flow adjustment chamber (61), a valve needle (62), a liquid inlet (65), a liquid outlet (66), a valve cover (67), and a connector (68);
• the primary flow adjustment chamber (61) is arranged inside the valve body (6);
• the primary flow adjustment chamber (61) is in the form of a T-shape;
• the valve needle (62) is arranged on a side of the primary flow adjustment chamber (61), and the valve needle (62) is threadedly connected to a side wall of the primary flow adjustment chamber (61);
• the valve needle (62) is arranged facing the liquid inlet (65), and the valve needle (62) is configured to close to or away from the liquid inlet (65) to regulate an inlet flow rate in a process of the valve needle (62) being moved helically;
• the valve cover (67) is arranged on another side of the primary flow adjustment chamber (61), the liquid inlet (65) is arranged inside the valve cover (67), and the liquid outlet (66) is arranged between the valve needle (62) and the liquid inlet (65);
• the liquid outlet (66) is arranged perpendicular to an axial direction of the valve needle (62);
• the combined valve body assembly (2) comprises a vertical column (21), a transverse block (22), and an inclined block (23);
• the vertical column (21) is vertically arranged at the top of the brewing head (1), and the transverse block (22) extends along a radial direction of the vertical column (21);
• an end of the transverse block (22) is connected to a side of the vertical column (21), and a vertical connecting block (24) is arranged at another end of the transverse block (22);
• the inclined block (23) is arranged on a side of the transverse block (22), and an end of the inclined block (23) is inclined related to a horizontal direction;
• the tertiary opening and closing chamber (4) is arranged vertically in the vertical column (21), and the secondary high-pressure mixing chamber (3) is arranged between the transverse block (22) and the vertical connecting block (24);
• an end face of the inclined block (23) is arranged with an inlet port (51) and an outlet port (52), which are arranged facing the water inlet port and the water outlet port of the solenoid valve, respectively;
• the hot water port (31) and the cold water port (32) are arranged on an end face of the vertical connecting block (24);
• the inlet chamber (41) is vertically arranged between the transverse block (22) and the vertical column (21), the inlet chamber (41) defines a threaded hole (42) running upwardly in a vertical direction, and the threaded hole (42) is internally threaded with a threaded rod (43).