Water-cooled air suspension variable-frequency centrifugal unit capable of overcoming defect of non-uniform falling film

Abstract

The invention discloses a water-cooling air suspension variable-frequency centrifugal unit capable of overcoming the defect of uneven falling films, and relates to the field of variable-frequency centrifugal units. The water-cooling air suspension variable-frequency centrifugal unit comprises a rack, a condenser, an evaporator and an air flotation compressor; a condenser and an evaporator are connected to the inner wall of the rack in a penetrating mode, one side of the evaporator is connected with an air flotation compressor through a pipeline, the air flotation compressor is connected to one side of the rack through bolts, the front portion of the evaporator and the front portion of the air flotation compressor are connected with a flash tank through pipelines, and a heat exchange mechanism is connected to the inner wall of the evaporator. The inner wall of the condenser is connected with a descaling mechanism. According to the water-cooled air suspension variable-frequency centrifugal unit, to-be-cooled liquid is added above the evaporator and flows into the heat exchange pipe, a falling film is formed on the inner wall of the heat exchange pipe, the air flotation compressor drives the pneumatic motor to operate, the air spraying pipe and the heat exchange pipe are driven to rotate, and refrigerant gas is evenly sprayed to the outer side of the heat exchange pipe to form the falling film; and therefore, the water-cooling air suspension variable-frequency centrifugal unit can uniformly fall a film.

Description

Technical Field

[0001] The invention relates to the technical field of variable frequency centrifugal units, and in particular to a water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film. Background Art

[0002] The water-cooled air-suspended variable frequency centrifugal unit is a highly efficient air conditioning and refrigeration equipment, commonly used in refrigeration systems in large buildings, industrial production and other places. It combines water cooling, air suspension and variable frequency technology, and uses gas to suspend the compressor bearings to reduce mechanical friction. The existing water-cooled air-suspended variable frequency centrifugal unit still has certain defects when in use, such as; The evaporator of the existing water-cooled air-suspended variable frequency centrifugal unit is usually placed horizontally. In the evaporator, the cooling liquid and the refrigerant passing through the heat exchange pipe are unevenly contacted, resulting in uneven film falling and uneven heat exchange, thus affecting the refrigeration effect. In addition, after long-term use, the existing water-cooled air-suspended variable frequency centrifugal unit needs to disassemble the shell condenser for descaling, which is more troublesome. Summary of the invention

[0003] The object of the present invention is to provide a water-cooled air-suspended variable frequency centrifugal unit that can solve the defect of uneven falling film, so as to solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a water-cooled air-suspended variable frequency centrifugal unit capable of solving the defect of uneven falling film, comprising: a frame, a condenser, an evaporator and an air-floating compressor; The condenser and the evaporator are connected through the inner wall of the frame, one side of the evaporator is connected to the air floating compressor through a pipeline, the air floating compressor is connected to one side of the frame by bolts, the front parts of the evaporator and the air floating compressor are connected to the flasher through a pipeline, the inner wall of the evaporator is connected to a heat exchange mechanism, the inner wall of the condenser is connected to a descaling mechanism, the top of the flasher is connected to a return air pipe, the other end of the return air pipe is connected to the air floating compressor, the air outlet end of the air floating compressor is connected to an air inlet pipe, the air inlet pipe is connected through the inner wall of the evaporator, the inner wall of the evaporator near the front of the air inlet pipe is connected through the outlet pipe, the other end of the outlet pipe is connected through the front of the inner wall of the condenser, and the back of the frame is connected to a frequency conversion cabinet and a control cabinet by bolts; The heat exchange mechanism includes a hollow plate connected to the inner wall of the evaporator by screws, a heat exchange tube is rotated through the inner wall of the hollow plate through a sealed bearing, an injection pipe is rotated through the inner wall of the hollow plate close to the heat exchange tube through a sealed bearing, the outer side of the injection pipe is connected to an upper gear by screws, and the outer side of the upper gear is meshed with an upper gear ring.

[0005] Preferably, a connecting frame is welded to the upper surface of the upper gear ring, an air motor is connected to the top of the connecting frame through a coupling, a bracket of the air motor is connected to the inner wall of the evaporator, an air inlet end of the air motor is connected to the air inlet pipe, and an air outlet end of the air motor is connected to the air outlet pipe.

[0006] Preferably, a rotating shaft is connected to the bottom of the connecting frame, and the rotating shaft passes through and rotates in the hollow disk via a sealed bearing.

[0007] Preferably, the bottom of the rotating shaft is connected to a lower gear ring by screws, the outer side of the lower gear ring is meshingly connected to a lower gear, and the lower gear is connected to the outer side of the heat exchange tube by screws.

[0008] Preferably, the descaling mechanism includes a hollow plate connected to the inner wall of the condenser by screws, a copper tube is connected through the hollow plate, and an upper hollow piece connected to the inner wall of the condenser near the top of the hollow plate by screws, an ultrasonic vibrator is connected through the upper hollow piece, and the ultrasonic vibrator is placed in the copper tube.

[0009] Preferably, the bottom of the upper hollow sheet is connected to an ultrasonic vibration rod, the bottom of the ultrasonic vibration rod is connected to a steel wire rope through a hook, the steel wire rope is connected to the lower hollow sheet through the hook, and the lower hollow sheet is connected to the inner wall of the condenser through screws.

[0010] Preferably, one side of the condenser is connected to an ultrasonic generator via a bracket.

[0011] Preferably, an electromagnetic three-way valve a is connected to the bottom of the condenser by bolts, a liquid outlet pipe is connected to the rear of the electromagnetic three-way valve a by bolts, and the other end of the liquid outlet pipe is connected to a mixing tank.

[0012] Preferably, one side of the mixing tank is connected to a metering pump a by bolts, and the liquid outlet end of the metering pump a is connected to one side of the inner wall of the mixing tank, and the upper surface of the mixing tank is connected to a metering pump b by bolts, and the liquid outlet end of the metering pump b is connected to the top of the inner wall of the mixing tank, and the liquid inlet end of the metering pump b is connected to a water tank through a pipeline, and the water tank is connected to the upper surface of the mixing tank by screws.

[0013] Preferably, an electromagnetic three-way valve b is connected below the mixing tank, one side of the electromagnetic three-way valve b is connected to a circulation pump by bolts, one side of the circulation pump is connected to a liquid inlet pipe by bolts, the other end of the liquid inlet pipe is connected to an electromagnetic three-way valve c by bolts, and the electromagnetic three-way valve c is connected to the top of the condenser by bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the water-cooled air-suspended variable frequency centrifugal unit adds cooling liquid above the evaporator, which flows into the heat exchange tube to form a falling film on the inner wall of the heat exchange tube. The air flotation compressor drives the pneumatic motor to operate, drives the jet pipe and the heat exchange tube to rotate, and allows the refrigerant gas to be evenly sprayed on the outside of the heat exchange tube to form a falling film, thereby allowing the water-cooled air-suspended variable frequency centrifugal unit to evenly drop the film.

[0015] 1. The water-cooled air-suspended variable frequency centrifugal unit adds the cooling liquid above the evaporator and flows into the heat exchange tube to form a falling film on the inner wall of the heat exchange tube. The air-floating compressor compresses the refrigerant to form high-temperature and high-pressure gas, which drives the pneumatic motor to operate. The pneumatic motor drives the upper gear ring and the lower gear ring to rotate. The upper gear ring drives the upper gear and the jet pipe to rotate. The lower gear ring drives the lower gear and the heat exchange tube to rotate, so that the refrigerant gas is evenly sprayed on the outside of the heat exchange tube to form a falling film, thereby making the water-cooled air-suspended variable frequency centrifugal unit evenly fall film. 2. The water-cooled air-suspended variable frequency centrifugal unit first discharges the cooling water in the condenser, and the metering pump a draws a certain amount of water into the mixing tank, and the metering pump b draws a certain amount of concentrated descaling agent in the water tank into the mixing tank. After stirring and dilution, it is sent into the condenser by the circulation pump, and then returns to the mixing tank for circulation cleaning. At the same time, the ultrasonic vibration rod is started to vibrate in the copper tube, vibrating the descaling agent and impacting the inner wall of the copper tube to remove the scale. After the descaling agent circulates several times, the descaling agent is discharged from the electromagnetic three-way valve b, thereby allowing the water-cooled air-suspended variable frequency centrifugal unit to assist in descaling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the air floating compressor of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the flash device of the present invention; Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the evaporator of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting frame of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the lower gear ring of the present invention; Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the condenser of the present invention; Figure 8 This is a schematic diagram of the main cross-sectional structure of the condenser of the present invention; Fig. 9 This is a schematic diagram of the three-dimensional structure of the copper tube of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the mixing tank of the present invention.

[0017] In the figure: 1, rack; 2, condenser; 3, evaporator; 4, air flotation compressor; 5, flasher; 6, heat exchange mechanism; 601, hollow plate; 602, heat exchange tube; 603, jet tube; 604, upper gear; 605, upper gear ring; 606, connecting frame; 607, pneumatic motor; 608, rotating shaft; 609, lower gear ring; 610, lower gear; 7, descaling mechanism; 701, hollow plate; 702, copper tube; 703, upper hollow sheet; 704, super Sonic wave vibrator; 705, steel wire rope; 706, lower hollow piece; 707, electromagnetic three-way valve a; 708, liquid outlet pipe; 709, mixing tank; 710, metering pump a; 711, metering pump b; 712, water tank; 713, electromagnetic three-way valve b; 714, circulation pump; 715, liquid inlet pipe; 716, electromagnetic three-way valve c; 717, ultrasonic generator; 8, return air pipe; 9, air inlet pipe; 10, air outlet pipe; 11, frequency conversion cabinet; 12, control cabinet. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 6The present invention provides a technical solution: a water-cooled air-suspended variable frequency centrifugal unit that can solve the defect of uneven falling film, comprising: a frame 1, a condenser 2, an evaporator 3 and an air-floating compressor 4; the condenser 2 and the evaporator 3 are connected through the inner wall of the frame 1, one side of the evaporator 3 is connected to the air-floating compressor 4 through a pipeline, the air-floating compressor 4 is connected to one side of the frame 1 through bolts, the front of the evaporator 3 and the air-floating compressor 4 is connected to a flasher 5 through a pipeline, the inner wall of the evaporator 3 is connected to a heat exchange mechanism 6, the condenser 2 is connected to the inner wall of the evaporator 3, and the air-floating compressor 4 is connected to the inner wall of the evaporator 3. A descaling mechanism 7 is connected to the inner wall, a return air pipe 8 is connected above the flasher 5, the other end of the return air pipe 8 is connected to the air floating compressor 4, the air outlet end of the air floating compressor 4 is connected to the air inlet pipe 9, the air inlet pipe 9 is connected to the inner wall of the evaporator 3, an air outlet pipe 10 is connected to the inner wall of the evaporator 3 near the front of the air inlet pipe 9, the other end of the air outlet pipe 10 is connected to the front of the inner wall of the condenser 2, and the back of the frame 1 is connected to the frequency conversion cabinet 11 and the control cabinet 12 by bolts; the heat exchange mechanism 6 includes the evaporator 3 A hollow plate 601 is connected to the inner wall by screws, a heat exchange tube 602 is inserted and rotated through the inner wall of the hollow plate 601 through a sealed bearing, an air jet tube 603 is inserted and rotated through the inner wall of the hollow plate 601 near the heat exchange tube 602 through a sealed bearing, an upper gear 604 is connected to the outer side of the air jet tube 603 by screws, an upper gear ring 605 is meshed and connected to the outer side of the upper gear ring 604, a connecting frame 606 is welded to the upper surface of the upper gear ring 605, and an air motor 607 is connected to the upper side of the connecting frame 606 through a coupling. The bracket of the pneumatic motor 607 is connected to the inner wall of the evaporator 3, the air inlet end of the pneumatic motor 607 is connected to the air inlet pipe 9, and the air outlet end of the pneumatic motor 607 is connected to the air outlet pipe 10. The bottom of the connecting frame 606 is connected to a rotating shaft 608, and the rotating shaft 608 rotates in the hollow disk 601 through a sealed bearing. The bottom of the rotating shaft 608 is connected to a lower gear ring 609 by screws, and the outer side of the lower gear ring 609 is meshed with a lower gear 610, and the lower gear 610 is connected to the outer side of the heat exchange tube 602 by screws.

[0020] During specific implementation, the liquid to be cooled is added from the top of the evaporator 3 and flows into the heat exchange tube 602, forming a falling film on the inner wall of the heat exchange tube 602. The refrigerant gas enters the evaporator 3 from the flasher 5, and then enters the multiple groups of injection tubes 603. The air flotation compressor 4 compresses the refrigerant to form a high-temperature and high-pressure gas, which enters the pneumatic motor 607 from the air inlet pipe 9 and is then discharged from the air outlet pipe 10, driving the pneumatic motor 607 to operate. The pneumatic motor 607 drives the connecting frame 606, the upper gear ring 605, the rotating shaft 608 and the lower gear ring 609 to rotate. The upper gear ring 605 drives the upper gear 604 and the injection tube 603 to rotate and spray the refrigerant gas. The lower gear ring 609 drives the lower gear 610 and the heat exchange tube 602 to rotate, so that the refrigerant gas is evenly sprayed on the outer side of the heat exchange tube 602 to form a falling film, thereby cooling the liquid to be cooled passing through the heat exchange tube 602.

[0021] See also Figure 1 , Figure 2 and Figure 7-10 It can be seen that the descaling mechanism 7 includes a hollow plate 701 connected to the inner wall of the condenser 2 by screws, a copper tube 702 is connected through the hollow plate 701, an upper hollow sheet 703 is connected to the inner wall of the condenser 2 near the upper part of the hollow plate 701 by screws, an ultrasonic vibration rod 704 is connected through the upper hollow sheet 703, the ultrasonic vibration rod 704 is placed through the copper tube 702, the bottom of the upper hollow sheet 703 is connected to the ultrasonic vibration rod 704, the bottom of the ultrasonic vibration rod 704 is connected to a steel wire rope 705 through a hook, the steel wire rope 705 is connected to a lower hollow sheet 706 through a hook, the lower hollow sheet 706 is connected to the inner wall of the condenser 2 by screws, an ultrasonic generator 717 is connected to one side of the condenser 2 through a bracket, an electromagnetic three-way valve a707 is connected to the bottom of the condenser 2 by bolts, and a liquid outlet pipe 708 is connected to the rear of the electromagnetic three-way valve a707 by bolts. The other end of the liquid outlet pipe 708 is connected to a mixing tank 709, one side of the mixing tank 709 is connected to a metering pump a710 by bolts, the liquid outlet end of the metering pump a710 is connected to one side of the inner wall of the mixing tank 709, the upper surface of the mixing tank 709 is connected to a metering pump b711 by bolts, the liquid outlet end of the metering pump b711 is connected to the upper part of the inner wall of the mixing tank 709, and the liquid inlet end of the metering pump b711 is connected to a water tank 712 through a pipeline, the water tank 712 is connected to the upper surface of the mixing tank 709 by screws, and an electromagnetic three-way valve b713 is connected to the bottom of the mixing tank 709, one side of the electromagnetic three-way valve b713 is connected to a circulation pump 714 by bolts, one side of the circulation pump 714 is connected to a liquid inlet pipe 715 by bolts, the other end of the liquid inlet pipe 715 is connected to an electromagnetic three-way valve c716 by bolts, and the electromagnetic three-way valve c716 is connected to the top of the condenser 2 by bolts.

[0022] During the specific implementation, the cooling water in the condenser 2 is first discharged, and then the electromagnetic three-way valve a707 is used to connect the condenser 2 with the liquid outlet pipe 708, the electromagnetic three-way valve c716 is used to connect the condenser 2 with the liquid inlet pipe 715, the metering pump a710 draws a certain amount of water into the mixing tank 709, and the metering pump b711 draws a certain amount of concentrated descaling agent in the water tank 712 into the mixing tank 709. After stirring and dilution, it is sent into the condenser 2 from the liquid inlet pipe 715 by the circulation pump 714, and returns to the mixing tank 709 from the liquid outlet pipe 708 for cyclic cleaning. At the same time, the ultrasonic generator 717 is used to start the ultrasonic vibration rod 704 to vibrate in the copper tube 702, vibrate the descaling agent, and generate bubbles to impact the inner wall of the copper tube 702 to remove the scale. After the descaling agent is circulated several times, the electromagnetic three-way valve b713 is disconnected from the circulation pump 714, connected to the outside world, and the descaling agent is discharged.

[0023] In summary, when using the water-cooled air suspension variable frequency centrifugal unit, the water inlet end of the metering pump a710 is connected to the water source through a pipeline, the concentrated descaling agent is added to the water tank 712, the electromagnetic three-way valve c716 and the electromagnetic three-way valve a707 are connected to the cooling water pipe structure, and the upper and lower parts of the evaporator 3 are connected to the pipeline for the cooling liquid to be cooled. The cooling liquid enters the evaporator 3, is guided to the inner wall of the evaporator 3 by the guide plate in the evaporator 3, and then falls on the uppermost hollow disk 601, flows into the heat exchange tube 602, and forms a falling film along the inner wall of the heat exchange tube 602. The control cabinet 12 is operated to start the air floating compressor 4 to compress. The refrigerant is compressed into a high-temperature and high-pressure gas, and then enters the pneumatic motor 607 from the air inlet pipe 9 to drive the pneumatic motor 607 to operate, and enters the condenser 2 from the air outlet pipe 10, and the heat is taken away by the cooling water. The high-temperature and high-pressure gas refrigerant is converted into liquid, and then enters the flash evaporator 5. A small part of the liquid refrigerant is sent from the return pipe 8 to the air flotation compressor 4 for air replenishment by the flash evaporator 5. Most of the liquid refrigerant is reduced in pressure by the throttle valve in the flash evaporator 5 and becomes a low-temperature and low-pressure refrigerant liquid and is sent to the evaporator 3, enters the rotating jet pipe 603, and is sprayed on the rotating heat exchange tube 602, allowing the heat exchange tube to rotate. A falling film is formed on the surface of 602 to cool the liquid to be cooled in the condenser 2. The low-temperature and low-pressure refrigerant liquid is converted into a low-temperature and low-pressure refrigerant gas, which enters the air flotation compressor 4 for compression again and circulates continuously. After the coolant cools down, it is pumped into the air conditioner and other equipment to blow out cold air, and the cooling water after absorbing heat is pumped into the cooling tower and other equipment to dissipate heat and cool down. After long-term use, when the scale on the inner wall of the copper tube 702 increases, disconnect the pipeline connected to the electromagnetic three-way valve a707, and then use the electromagnetic three-way valve a707 to connect the condenser 2 with the liquid outlet pipe 708, and the electromagnetic three-way valve c 716 connects the condenser 2 with the liquid inlet pipe 715, and the metering pump a710 and the water tank 712 draw out a certain amount of water and concentrated descaling agent in proportion and send them into the mixing tank 709 for mixing, and then they are sent into the condenser 2 by the circulating pump 714 for circulating flushing, and the ultrasonic vibration rod 704 is started to vibrate the descaling agent, allowing the descaling agent to impact the inner wall of the copper tube 702 to remove the scale. After the descaling agent circulates several times, it is discharged from the electromagnetic three-way valve b713, and then the cooling water pipeline is reconnected to the electromagnetic three-way valve a707. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film, comprising: The frame (1), the condenser (2), the evaporator (3) and the air flotation compressor (4) are characterized by: The inner wall of the frame (1) is connected with a condenser (2) and an evaporator (3); one side of the evaporator (3) is connected to an air-floating compressor (4) via a pipeline; the air-floating compressor (4) is connected to one side of the frame (1) via bolts; the front of the evaporator (3) and the air-floating compressor (4) is connected to a flasher (5) via a pipeline; the inner wall of the evaporator (3) is connected to a heat exchange mechanism (6); the inner wall of the condenser (2) is connected to a descaling mechanism (7); and the top of the flasher (5) is connected to a return mechanism (8). An air pipe (8), the other end of the return air pipe (8) is connected to the air flotation compressor (4), the air outlet end of the air flotation compressor (4) is connected to an air inlet pipe (9), the air inlet pipe (9) is connected to the inner wall of the evaporator (3), an air outlet pipe (10) is connected to the inner wall of the evaporator (3) near the front of the air inlet pipe (9), the other end of the air outlet pipe (10) is connected to the front of the inner wall of the condenser (2), and the back of the frame (1) is connected to a frequency conversion cabinet (11) and a control cabinet (12) by bolts; The heat exchange mechanism (6) comprises a hollow plate (601) connected to the inner wall of the evaporator (3) by screws, a heat exchange tube (602) passing through the inner wall of the hollow plate (601) via a sealed bearing and rotating, an injection tube (603) passing through the inner wall of the hollow plate (601) close to the heat exchange tube (602) via a sealed bearing and rotating, the outer side of the injection tube (603) is connected to an upper gear (604) via screws, and the outer side of the upper gear (604) is meshingly connected to an upper gear ring (605).

2. According to claim 1, a water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film is characterized in that: A connecting frame (606) is welded to the upper surface of the upper gear ring (605); an air motor (607) is connected to the upper side of the connecting frame (606) via a coupling; a bracket of the air motor (607) is connected to the inner wall of the evaporator (3); an air inlet end of the air motor (607) is connected to the air inlet pipe (9); and an air outlet end of the air motor (607) is connected to the air outlet pipe (10).

3. A water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 2, characterized in that: The bottom of the connecting frame (606) is connected to a rotating shaft (608), and the rotating shaft (608) passes through and rotates in the hollow disk (601) via a sealed bearing.

4. A water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 3, characterized in that: The bottom of the rotating shaft (608) is connected to a lower gear ring (609) via screws, the outer side of the lower gear ring (609) is meshingly connected to a lower gear (610), and the lower gear (610) is connected to the outer side of the heat exchange tube (602) via screws.

5. The water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 1, characterized in that: The descaling mechanism (7) comprises a hollow plate (701) connected to the inner wall of the condenser (2) by screws, a copper tube (702) being connected through the hollow plate (701), and an upper hollow plate (703) connected to the inner wall of the condenser (2) near the upper part of the hollow plate (701) by screws, an ultrasonic vibration rod (704) being connected through the upper hollow plate (703), and the ultrasonic vibration rod (704) being placed through the copper tube (702).

6. A water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 5, characterized in that: The bottom of the upper hollow sheet (703) is connected to an ultrasonic vibration rod (704), the bottom of the ultrasonic vibration rod (704) is connected to a steel wire rope (705) via a hook, the steel wire rope (705) is connected to a lower hollow sheet (706) via a hook, and the lower hollow sheet (706) is connected to the inner wall of the condenser (2) via screws.

7. The water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 1, characterized in that: One side of the condenser (2) is connected to an ultrasonic generator (717) via a bracket.

8. The water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 1, characterized in that: An electromagnetic three-way valve a (707) is connected to the bottom of the condenser (2) by means of bolts, a liquid outlet pipe (708) is connected to the rear of the electromagnetic three-way valve a (707) by means of bolts, and the other end of the liquid outlet pipe (708) is connected to a mixing tank (709).

9. A water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 8, characterized in that: A metering pump a (710) is connected to one side of the mixing tank (709) by bolts, and a liquid outlet end of the metering pump a (710) is connected to one side of the inner wall of the mixing tank (709). A metering pump b (711) is connected to the upper surface of the mixing tank (709) by bolts, and a liquid outlet end of the metering pump b (711) is connected to the upper part of the inner wall of the mixing tank (709). A liquid inlet end of the metering pump b (711) is connected to a water tank (712) by a pipeline, and the water tank (712) is connected to the upper surface of the mixing tank (709) by screws.

10. The water-cooled air-suspended variable frequency centrifugal unit capable of solving the problem of uneven falling film according to claim 8, characterized in that: An electromagnetic three-way valve b (713) is connected below the mixing tank (709); one side of the electromagnetic three-way valve b (713) is connected to a circulation pump (714) via bolts; one side of the circulation pump (714) is connected to a liquid inlet pipe (715) via bolts; the other end of the liquid inlet pipe (715) is connected to an electromagnetic three-way valve c (716) via bolts; and the electromagnetic three-way valve c (716) is connected to the top of the condenser (2) via bolts.

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