A fully welded heat exchanger convenient for maintenance and its maintenance method

Abstract

The present invention discloses a fully welded heat exchanger convenient for maintenance and a maintenance method thereof, belonging to the technical field of heat exchangers. A fully welded heat exchanger convenient for maintenance includes an installation box for refrigerant circulation, and further includes: a heat exchange tube fixedly installed inside the installation box, the top pipe orifice of the heat exchange tube extends above the installation box, the bottom pipe orifice of the heat exchange tube extends below the installation box, and a liquid inlet pipe and a liquid discharge pipe are respectively fixedly connected to both sides of the installation box. Among them, the inner diameter of the heat exchange tube is not less than 100 MM; by setting the inner diameter of the heat exchange tube to be not less than 100 MM, compared with the traditional heat exchanger pipeline, the pipeline diameter becomes larger, reducing the difficulty of cleaning and maintenance. Moreover, the enlarged pipeline inner diameter cooperates with the conical ring, improving the pressure of the air flow when passing through the heat exchange tube and increasing the contact area between the air flow and the heat exchange pipeline, thereby improving the heat exchange effect between the air flow and the heat exchange medium.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a fully welded heat exchanger that is convenient for maintenance. Background Art

[0002] The heat exchanger tube group refers to the pipeline system used for heat transfer in a heat exchanger. The heat exchanger tube group usually consists of multiple pipes. Fluids flowing through these pipes can exchange heat in the heat exchanger to achieve the transfer and conversion of thermal energy.

[0003] Currently, in order to improve the heat exchange efficiency, the inner diameter of the heat exchange pipes in the heat exchange tube group is generally set to be relatively narrow. When cleaning and maintaining the inside of the heat exchange pipes, due to the small pipe orifices, the cleaning and maintenance work becomes more difficult. Therefore, specific cleaning tools are required for cleaning. After cleaning with specific cleaning tools, due to the small pipe orifices, the cleaning personnel cannot confirm whether the inside of the pipes is clean. To ensure the maintenance effect, a fully welded heat exchanger that is convenient for maintenance is proposed herein. Summary of the Invention

[0004] The present invention is proposed to solve the problem that the pipes are narrow and inconvenient for cleaning and maintenance in the prior art, and provides a fully welded heat exchanger that is convenient for maintenance.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A fully welded heat exchanger that is convenient for maintenance, including an installation box for refrigerant circulation, further including: a heat exchange tube fixedly installed inside the installation box, the top pipe orifice of the heat exchange tube extending above the installation box, the bottom pipe orifice of the heat exchange tube extending below the installation box, a liquid inlet pipe and a liquid discharge pipe respectively fixedly connected to both sides of the installation box. Among them, the inner diameter of the heat exchange tube is not less than 100 MM; an installation pipe passing through the center of the heat exchange tube and coaxial with the heat exchange tube; a conical ring rotatably installed on the installation pipe. Among them, the conical ring is composed of a frustum and a truncated cone, and turbine blades are fixedly installed on both the frustum and the truncated cone. The distance between the outer diameter of the truncated cone and the inner diameter of the installation pipe is 1 MM - 3 MM, and a cavity is provided inside the conical ring. When the external air flow moves upward from the bottom of the heat exchange tube, the air flow passes through the gap between the conical ring and the heat exchange tube, and drives the conical ring to rotate through the turbine blades. At the same time, the air flow is driven by the frustum and the truncated cone to spread around the installation pipe and contact the inner wall of the heat exchange tube.

[0007] As a preferred embodiment of the present invention: the inner diameter of the heat exchange tube is 100 MM - 200 MM, and the outer diameter of the installation pipe is 20 MM - 60 MM.

[0008] As a preferred embodiment of the present invention: a gas collecting hood is fixedly installed on the top of the installation box through bolts, an installation cover is arranged at the bottom of the installation box, the installation cover is clamped and sealed with the installation box, a first mounting plate is fixedly installed on the installation cover, a motor cover is fixedly installed at the bottom of the first mounting plate, and a check valve plate is fixedly installed at the bottom of the first mounting plate.

[0009] As a preferred embodiment of the present invention: a connecting rod is fixedly installed on the installation cover, a first water tank is fixedly installed on the connecting rod, the installation pipe is fixedly installed on the first water tank, and the bottom of the installation pipe is communicated with the first water tank. A drain pipe is fixedly installed on the side wall of the first water tank, one end of the drain pipe extends to the outside of the installation cover, and the other end of the drain pipe is communicated with the first water tank.

[0010] As a preferred embodiment of the present invention: a support rod is fixedly installed on the top of the installation box, a second water tank is fixedly installed on the support rod, and the top end of the installation pipe is clamped and sealed with the bottom of the second water tank.

[0011] As a preferred embodiment of the present invention: a second mounting plate is fixedly installed on the exhaust port of the gas collecting hood, a third mounting plate is fixedly installed inside the gas collecting hood, the third mounting plate is arranged below the second mounting plate, an installation shaft is rotatably connected between the second mounting plate and the third mounting plate, a power turbine is fixedly installed on the installation shaft, a piston assembly is fixedly installed on the third mounting plate, the driving end of the piston assembly is connected to the installation shaft, a first heat preservation pipe is fixedly installed at the input end of the piston assembly, a second heat preservation pipe is fixedly installed at the output end of the piston assembly, and the second heat preservation pipe is connected to the top of the second water tank.

[0012] As a preferred embodiment of the present invention: the piston assembly includes a piston cylinder fixedly installed on the third mounting plate, one-way valves are arranged at both the output end and the input end of the piston cylinder, a piston plate is slidably connected inside the piston cylinder, a crank is rotatably connected to the piston plate, a crankshaft is fixedly connected to the installation shaft, and the crankshaft is rotatably connected to the crank.

[0013] As a preferred embodiment of the present invention: it further includes a heat exchange hose, the output end of the heat exchange hose is fixedly connected to the first heat preservation pipe, the input end of the heat exchange hose is fixedly connected to the drain pipe, wherein the heat exchange hose is spiral and covers the outer wall of the compressor; a brush is fixedly connected to the installation pipe, the brush is attached to the inner wall of the heat exchange pipe, a scraper is fixedly connected to the top of the conical ring, the scraper is attached to the inner wall of the heat exchange pipe, a water guide groove is opened on the scraper, the water guide groove is communicated with the cavity, and a drain hole is opened on the conical surface of the frustum, and the drain hole is communicated with the inside of the heat exchange pipe.

[0014] As a preferred embodiment of the present invention: drainage holes are provided on the conical surface of the frustum, the drainage holes are internally communicated with the heat exchange tubes, water passing holes communicated with the cavity are provided on the installation tube, and drainage holes are provided on the conical surface of the frustum.

[0015] A maintenance method for a fully welded heat exchanger that is convenient for maintenance includes the following steps:

[0016] Step 1: Loosen the bolts and remove the gas collecting cover and the second water tank;

[0017] Step 2: Insert a plugging disc with an inner diameter that fits and seals the outer wall of the motor cover and an outer diameter that fits and seals the inner diameter of the installation cover onto the motor cover;

[0018] Step 3: And discharge the cleaning liquid into the installation cover through the pipeline at the bottom of the plugging disc;

[0019] Step 4: Start the motor installed inside the motor cover, and use the motor to drive the fan blade arranged above the installation motor cover and fixed to the motor output shaft to rotate, so that the cleaning liquid flows;

[0020] Step 5: The cleaning liquid flowing through the heat exchange tubes drives the conical ring to rotate through the turbine blades and cleans the inside of the heat exchange tubes;

[0021] Step 6: Remove the installation box from the installation cover and check whether the cleaning inside the heat exchange tubes is qualified.

[0022] Compared with the prior art, the present invention provides a fully welded heat exchanger that is convenient for maintenance, and has the following beneficial effects:

[0023] 1. For this fully welded heat exchanger that is convenient for maintenance, by setting the inner diameter of the heat exchange tubes to be not less than 100 MM, compared with the traditional heat exchanger pipes, the pipe diameter becomes larger, reducing the difficulty of cleaning and maintenance. And the enlarged inner diameter of the pipe cooperates with the conical ring, which not only increases the pressure of the air flow when passing through the heat exchange tubes, but also increases the contact area between the air flow and the heat exchange pipes, thereby improving the heat exchange effect between the air flow and the heat exchange medium;

[0024] 2. For this fully welded heat exchanger that is convenient for maintenance, the heat exchange hose absorbs the heat generated during the operation of the air compressor and increases the temperature of the condensed water, preventing the condensed water from freezing on the inner wall of the heat exchange pipes, eliminating the need for defrosting inside the air conditioning system, thereby improving the stability of continuous heating. At the same time, during the process of the condensed water being thrown out of the cavity, it adsorbs the dust in the air flow entering the heat exchange tubes, improving the cleanliness of the heat exchange air flow. At the same time, the brush scrapes the inside of the heat exchange tubes, which can prevent the lower inner wall of the heat exchange tubes from freezing;

[0025] 3. For the fully welded heat exchanger that is easy to maintain, by connecting the first heat preservation pipe to the condensate drain pipe and closing the valve on the drain pipe, when the condensate accumulates enough, the excess condensate enters the cavity through the drain hole, and then is thrown onto the inner wall of the heat exchange pipe through the drain hole, accelerating the cooling of the heat exchange medium inside the installation box and improving the refrigeration effect of the overall air conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic perspective view of a fully welded heat exchanger that is easy to maintain proposed by the present invention;

[0027] Figure 2 FIG. is a schematic structural view of the first water tank of a fully welded heat exchanger that is easy to maintain proposed by the present invention;

[0028] Figure 3 FIG. is the main cross-section of a fully welded heat exchanger that is easy to maintain proposed by the present invention Figure 1 ;

[0029] Figure 4 FIG. is a schematic structural view of the heat exchange pipe of a fully welded heat exchanger that is easy to maintain proposed by the present invention;

[0030] Figure 5 FIG. is a schematic structural view of the conical ring of a fully welded heat exchanger that is easy to maintain proposed by the present invention Figure 1 ;

[0031] Figure 6 FIG. is a schematic perspective cross-sectional view of a fully welded heat exchanger that is easy to maintain proposed by the present invention;

[0032] Figure 7 FIG. is a schematic structural view of the installation cover of a fully welded heat exchanger that is easy to maintain proposed by the present invention Figure 2 ;

[0033] Figure 8 FIG. is the main cross-section of a fully welded heat exchanger that is easy to maintain proposed by the present invention Figure 2 ;

[0034] Figure 9 FIG. is a fully welded heat exchanger that is easy to maintain proposed by the present invention Figure 8 Schematic structural view of part A in;

[0035] Figure 10 FIG. is a schematic structural view of the conical ring of a fully welded heat exchanger that is easy to maintain proposed by the present invention Figure 2 .

[0036] In the figure: 1, installation box; 2, heat exchange tube; 3, installation tube; 4, conical ring; 5, cavity; 6, turbine blade; 7, drain hole; 8, scraper; 9, water guide groove; 10, water through hole; 11, first water tank; 12, connecting rod; 13, brush; 14, liquid inlet pipe; 15, liquid discharge pipe; 16, drain pipe; 17, heat exchange hose; 18, installation cover; 19, first installation plate; 20, motor cover; 21, gas gathering cover; 22, support rod; 23, second water tank; 24, second installation plate; 25, third installation plate; 26, installation shaft; 27, crankshaft; 28, power turbine; 29, piston cylinder; 30, first heat preservation pipe; 31, second heat preservation pipe; 32, crank; 33, piston plate; 34, check valve plate. Detailed implementation manner

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] Embodiment: Refer to Figures 1 - 10 , a fully welded heat exchanger that is convenient for maintenance, including an installation box 1 for refrigerant circulation, and further including: a heat exchange tube 2 fixedly installed inside the installation box 1, the top pipe orifice of the heat exchange tube 2 extends above the installation box 1, the bottom pipe orifice of the heat exchange tube 2 extends below the installation box 1, a liquid inlet pipe 14 and a liquid discharge pipe 15 are respectively fixedly connected to both sides of the installation box 1, wherein the inner diameter of the heat exchange tube 2 is not less than 100 MM; an installation tube 3 passing through the center of the heat exchange tube 2 and coaxial with the heat exchange tube 2; a conical ring 4 rotatably installed on the installation tube 3, wherein the conical ring 4 is composed of a frustum and a round table, turbine blades 6 are fixedly installed on both the frustum and the round table, the distance between the outer diameter of the round table and the inner diameter of the installation tube 3 is 1 MM - 3 MM, and a cavity 5 is provided inside the conical ring 4; when the external air flow moves upward from the bottom of the heat exchange tube 2, the air flow passes through the gap between the conical ring 4 and the heat exchange tube 2, and drives the conical ring 4 to rotate through the turbine blades 6, and at the same time drives the air flow to diffuse around the installation tube 3 and contact the inner wall of the heat exchange tube 2 through the frustum and the round table.

[0040] When in use, the medium for heat exchange with the air flow is discharged into the installation box 1 through the liquid inlet pipe 14, is divided in the installation box 1 and fills the installation box 1, and then is discharged through the liquid discharge pipe 15 (in order to facilitate the heat exchange medium to fill the installation box 1, a pressure control valve is provided on the pipeline of the liquid discharge pipe 15). During the process of the heat exchange medium flowing in the installation box 1, the air flow is blown into the inside of the heat exchange tube 2 through the air supply component in the air conditioning system. During the process of the air flow passing through the heat exchange tube 2, it diffuses to the outside of the conical ring 4 through the conical ring 4. At the same time, during the process of the air flow passing through the heat exchange tube 2, the turbine blade 6 is driven to rotate, and the turbine blade 6 drives the conical ring 4 to rotate.

[0041] In summary, by setting the inner diameter of the heat exchange tube 2 to be not less than 100 MM, compared with the traditional heat exchanger pipeline, the pipeline diameter becomes larger, reducing the difficulty of cleaning and maintenance. And the enlarged inner diameter of the pipeline cooperates with the conical ring 4, while increasing the pressure of the air flow when passing through the heat exchange tube 2, increasing the contact area between the air flow and the heat exchange tube 2, and thus improving the heat exchange effect between the air flow and the heat exchange medium.

[0042] Refer to Figure 4 , wherein, the inner diameter of the heat exchange tube 2 is 100 MM - 200 MM, and the outer ring diameter of the installation tube 3 is 20 MM - 60 MM.

[0043] Refer to Figure 6 , a gas collecting hood 21 is fixedly installed on the top of the installation box 1 through bolts. An installation cover 18 is arranged at the bottom of the installation box 1. The installation cover 18 is clamped and sealed with the installation box 1. A first installation plate 19 is fixedly installed on the installation cover 18. A motor cover 20 is fixedly installed at the bottom of the first installation plate 19. A check valve plate 34 is fixedly installed at the bottom of the first installation plate 19.

[0044] The driving part (motor) of the air supply component in the air conditioning system can be installed inside the motor cover 20, and the fan blade is arranged above the first installation plate 19. When maintaining and cleaning, the bottom of the installation cover 18 is blocked by using the indexing plate. The inner circle of the blocking plate is hermetically fitted with the outer wall of the motor cover 20, the outer circle of the blocking plate is hermetically fitted with the inner wall of the installation cover 18, and a pipeline communicating with the top is arranged at the bottom of the blocking plate. When maintaining and cleaning, the cleaning liquid is discharged above the blocking plate through the pipeline at the bottom, and then the motor inside the motor cover 20 is started to drive the fan blade located at the top of the first installation plate 19 to rotate. During this process, the fan blade stirs the cleaning liquid to make the cleaning liquid flow, thereby improving the cleaning effect.

[0045] Refer to Figure 3 、 Figure 8 and Figure 9, a connecting rod 12 is fixedly installed on the installation cover 18, a first water tank 11 is fixedly installed on the connecting rod 12, an installation pipe 3 is fixedly installed on the first water tank 11, and the bottom of the installation pipe 3 is communicated with the first water tank 11. A drain pipe 16 is fixedly installed on the side wall of the first water tank 11. One end of the drain pipe 16 extends to the outside of the installation cover 18, and the other end of the drain pipe 16 is communicated with the first water tank 11. A support rod 22 is fixedly installed on the top of the installation box 1, and a second water tank 23 is fixedly installed on the support rod 22. The top end of the installation pipe 3 is clamped and sealed with the bottom of the second water tank 23. A second mounting plate 24 is fixedly installed on the exhaust port of the air gathering hood 21. A third mounting plate 25 is fixedly installed in the air gathering hood 21. The third mounting plate 25 is arranged below the second mounting plate 24. An installation shaft 26 is rotatably connected between the second mounting plate 24 and the third mounting plate 25. A power turbine 28 is fixedly installed on the installation shaft 26. A piston assembly is fixedly installed on the third mounting plate 25. The driving end of the piston assembly is connected to the installation shaft 26. The input end of the piston assembly is fixedly installed with a first heat preservation pipe 30. The output end of the piston assembly is fixedly installed with a second heat preservation pipe 31. The second heat preservation pipe 31 is connected to the top of the second water tank 23. The piston assembly includes a piston cylinder 29 fixedly installed on the third mounting plate 25. One-way valves are arranged at both the output end and the input end of the piston cylinder 29. A piston plate 33 is slidably connected in the piston cylinder 29. A crank 32 is rotatably connected to the piston plate 33. A crankshaft 27 is fixedly connected to the installation shaft 26. The crankshaft 27 is rotatably connected to the crank 32.

[0046] When the heat-exchanged air flow is discharged from the top of the air gathering hood 21, the air flow drives the power turbine 28 to rotate. The power turbine 28 drives the installation shaft 26 to rotate. The installation shaft 26 drives the crankshaft 27 to rotate. The crankshaft 27 makes the piston plate 33 reciprocate in the piston cylinder 29 through the crank 32. Under the action of the two one-way valves, positive pressure and negative pressure are reciprocally generated inside the piston cylinder 29. The negative pressure sucks the fluid medium through the first heat preservation pipe 30 and then discharges it into the second water tank 23, and is discharged into the first water tank 11 through the diversion of multiple installation pipes 3.

[0047] When the heat exchanger is used as an evaporator in cold regions, the inside of the evaporator further includes a heat exchange hose 17. The output end of the heat exchange hose 17 is fixedly connected to the first heat preservation pipe 30, and the input end of the heat exchange hose 17 is fixedly connected to the drain pipe 16. Among them, the heat exchange hose 17 is spiral and covers the outer wall of the compressor. A brush 13 is fixedly connected to the installation pipe 3. The brush 13 is attached to the inner wall of the heat exchange pipe 2. A scraping plate 8 is fixedly connected to the top of the conical ring 4. The scraping plate 8 is attached to the inner wall of the heat exchange pipe 2. A water guide groove 9 is opened on the scraping plate 8. The water guide groove 9 is communicated with the cavity 5. Drain holes 7 are opened on the conical surface of the frustum. The drain holes 7 are communicated with the inside of the heat exchange pipe 2.

[0048] During the use process, the heat exchange hose 17 absorbs the heat generated when the compressor in the air conditioning system operates, and then circulates under the action of the piston assembly, passes through the installation pipe 3, and heats the installation pipe 3 and the conical ring 4. At the same time, during the rotation of the conical ring 4, the brush 13 and the scraper 8 are driven to rotate. During this process, the lower brush 13 scrapes the inner wall of the heat exchange pipe 2, and at the same time, the scraper 8 rotates to scrape the upper inner wall of the heat exchange pipe 2. When scraping, the condensed water condensed on the inner wall of the heat exchange pipe 2 is led into the cavity 5 through the water guide groove 9, and the condensed water exchanges heat with the medium that has absorbed the heat of the compressor operation, increasing the temperature of the condensed water and preventing the condensed water from freezing on the inner wall of the heat exchange pipe 2. The heated condensed water is sprayed out through the drain hole 7 and thrown towards the lower inner wall of the heat exchange pipe 2. During the process of the condensed water being thrown out, it adsorbs the dust in the airflow entering the interior of the heat exchange pipe 2, improving the cleanliness of the heat exchange airflow. At the same time, the brush 13 scrapes the interior of the heat exchange pipe 2, which can prevent the lower inner wall of the heat exchange pipe 2 from freezing.

[0049] Refer to Figures 1 - 3 and Figures 9 - 10 When the heat exchanger is used as a condenser and is used for refrigeration for a long time, drain holes 7 are provided on the conical surface of the frustum. The drain holes 7 are communicated with the interior of the heat exchange pipe 2. Water passing holes 10 communicated with the cavity 5 are provided on the installation pipe 3. Drain holes 7 are provided on the conical surface of the frustum. Connect the first heat preservation pipe 30 to the water pipe of the condensed water, and close the valve on the drain pipe 16. When the condensed water accumulates enough, the excess condensed water enters the cavity 5 through the drain holes 7, and then is discharged onto the inner wall of the heat exchange pipe 2 through the drain holes 7, accelerating the cooling of the heat exchange medium inside the installation box 1 and improving the refrigeration effect of the overall air conditioning system.

[0050] A maintenance method for a fully welded heat exchanger that is easy to maintain includes the following steps:

[0051] Step 1: Loosen the bolts and remove the gas collecting hood 21 and the second water tank 23;

[0052] Step 2: Insert a plugging disc with an inner diameter that fits and seals the outer wall of the motor hood 20 and an outer diameter that fits and seals the inner diameter of the installation hood 18 onto the motor hood 20;

[0053] Step 3: And discharge the cleaning liquid into the interior of the installation hood 18 through the pipe at the bottom of the plugging disc;

[0054] Step 4: Start the motor installed inside the motor hood 20, and use the motor to drive the fan blade fixed to the output shaft of the motor and arranged above the installation motor hood 20 to rotate, so that the cleaning liquid flows;

[0055] Step 5: The cleaning liquid flowing through the heat exchange pipe 2 drives the conical ring 4 to rotate through the turbine blades 6 and cleans the interior of the heat exchange pipe 2;

[0056] Step Six: Remove the installation box 1 from the installation cover 18 and check whether the cleanliness inside the heat exchange tube 2 is qualified.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A fully welded heat exchanger that is easy to maintain, comprising a mounting box (1) for circulating a refrigerant, characterized in that: Also includes: A heat exchange tube (2) is fixedly installed inside the installation box (1), the top pipe opening of the heat exchange tube (2) extends to the top of the installation box (1), and the bottom pipe opening of the heat exchange tube (2) extends to the bottom of the installation box (1), and the two sides of the installation box (1) are respectively fixedly connected with a liquid inlet pipe (14) and a liquid discharge pipe (15), wherein the inner diameter of the heat exchange tube (2) is not less than 100MM; A mounting tube (3) passes through the center of the heat exchange tube (2) and is coaxial with the heat exchange tube (2); A conical ring (4) is rotatably mounted on the mounting tube (3), wherein the conical ring (4) is composed of a frustum and a truncated cone, turbine blades (6) are fixedly mounted on both the frustum and the truncated cone, the distance between the outer diameter of the truncated cone and the inner diameter of the mounting tube (3) is 1 mm to 3 mm, and a cavity (5) is provided inside the conical ring (4); When the external airflow moves upward from the bottom of the heat exchange tube (2), the airflow passes through the gap between the conical ring (4) and the heat exchange tube (2), and drives the conical ring (4) to rotate through the turbine blades (6), while at the same time driving the airflow to diffuse around the installation tube (3) through the cone and the truncated cone to contact the inner wall of the heat exchange tube (2); A gas collecting cover (21) is fixedly mounted on the top of the installation box (1) by means of bolts, a mounting cover (18) is arranged on the bottom of the installation box (1), the mounting cover (18) is snap-fitted and sealed with the installation box (1), a first mounting plate (19) is fixedly mounted on the mounting cover (18), a motor cover (20) is fixedly mounted on the bottom of the first mounting plate (19), and a check plate (34) is fixedly mounted on the bottom of the first mounting plate (19); A connecting rod (12) is fixedly mounted on the mounting cover (18), a first water tank (11) is fixedly mounted on the connecting rod (12), the mounting pipe (3) is fixedly mounted on the first water tank (11), and the bottom of the mounting pipe (3) is in communication with the first water tank (11), a drain pipe (16) is fixedly mounted on the side wall of the first water tank (11), one end of the drain pipe (16) extends to the outside of the mounting cover (18), and the other end of the drain pipe (16) is in communication with the first water tank (11); A support rod (22) is fixedly mounted on the top of the installation box (1), a second water tank (23) is fixedly mounted on the support rod (22), and the top end of the installation pipe (3) is clamped and sealed with the bottom end of the second water tank (23); A second mounting plate (24) is fixedly mounted on the exhaust port of the gas collecting hood (21); a third mounting plate (25) is fixedly mounted inside the gas collecting hood (21); the third mounting plate (25) is arranged below the second mounting plate (24); a mounting shaft (26) is rotatably connected between the second mounting plate (24) and the third mounting plate (25); a power turbine (28) is fixedly mounted on the mounting shaft (26); a piston assembly is fixedly mounted on the third mounting plate (25); a driving end of the piston assembly is connected to the mounting shaft (26); a first insulation pipe (30) is fixedly mounted on the input end of the piston assembly; a second insulation pipe (31) is fixedly mounted on the output end of the piston assembly; and the second insulation pipe (31) is connected to the top of the second water tank (23); It also comprises a heat exchange hose (17), the output end of the heat exchange hose (17) being fixedly connected to the first insulation pipe (30), and the input end of the heat exchange hose (17) being fixedly connected to the drain pipe (16), wherein the heat exchange hose (17) is spiral-shaped and covers the outer wall of the compressor; A brush (13) is fixedly connected to the mounting tube (3), and the brush (13) is in contact with the inner wall of the heat exchange tube (2); a scraper (8) is fixedly connected to the top of the conical ring (4), and the scraper (8) is in contact with the inner wall of the heat exchange tube (2); a water guide groove (9) is provided on the scraper (8), and the water guide groove (9) is connected to the cavity (5); a drainage hole (7) is provided on the conical surface of the cone, and the drainage hole (7) is connected to the inside of the heat exchange tube (2); The installation tube (3) is provided with a water hole (10) which is in communication with the cavity (5).

2. The all-welded heat exchanger easy to maintain according to claim 1, characterized in that: The inner diameter of the heat exchange tube (2) is 100MM-200MM, and the outer ring diameter of the mounting tube (3) is 20MM-60MM.

3. The all-welded heat exchanger that is easy to maintain according to claim 2, characterized in that: The piston assembly comprises a piston cylinder (29) fixedly mounted on a third mounting plate (25), the output end and the input end of the piston cylinder (29) being both provided with a one-way valve, a piston plate (33) being slidably connected inside the piston cylinder (29), a crank (32) being rotatably connected to the piston plate (33), a crankshaft (27) being fixedly connected to the mounting shaft (26), and the crankshaft (27) being rotatably connected to the crank (32).

4. A maintenance method for a fully welded heat exchanger that is easy to maintain, comprising the fully welded heat exchanger that is easy to maintain according to claim 3, characterized in that: The following steps are involved: Step 1: Loosen the bolts and remove the gas collecting cover (21) and the second water tank (23); Step 2: inserting a sealing disk whose inner diameter is sealed against the outer wall of the motor cover (20) and whose outer diameter is sealed against the inner diameter of the mounting cover (18) onto the motor cover (20); Step 3: Discharge the cleaning liquid into the interior of the mounting cover (18) through the pipe at the bottom of the plugging plate; Step 4: starting the motor installed inside the motor cover (20), and using the motor to drive the fan blades arranged above the motor cover (20) and fixed to the motor output shaft to rotate, so that the cleaning liquid flows; Step 5: The cleaning liquid flowing through the heat exchange tube (2) drives the conical ring (4) to rotate through the turbine blades (6) and cleans the inside of the heat exchange tube (2); Step 6: Remove the installation box (1) from the installation cover (18) and check whether the inside of the heat exchange tube (2) is clean.

Images