Plate-fin heat exchanger with condensate water emptying function

Abstract

The invention discloses a plate-fin heat exchanger with a condensate water emptying function, and relates to the technical field of heat exchangers. Comprising a heat exchange mounting part, and an angle adjusting part is mounted on the heat exchange mounting part and used for adjusting the air inlet angle; an air inlet detection piece is mounted on the heat exchange mounting piece; the air inlet detection piece is used for controlling air blowing and dehumidification; an emptying control piece is mounted at the bottom of the heat exchange mounting piece; the emptying control part is used for controlling the emptying heat exchange mounting part; a cleaning control piece is mounted on the air inlet detection piece; the air inlet detection piece can automatically control the steam tail gas pipe in butt joint with the air inlet pipe to stop exhausting when the boiler is shut down, overhauled or paused and the like, and emptying and air drying protection work is conducted on the heat exchange pipe. The problems that an existing plate-fin heat exchanger cannot be automatically controlled to be automatically emptied and air-dried when steam discharging is stopped, and a worker cannot conveniently clean a heat exchange pipeline without stopping steam discharging are solved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, specifically to a plate-fin heat exchanger with condensate drainage function. Background Technology

[0002] In actual boiler and other equipment steam exhaust, it is usually necessary to first cool the exhaust gas to reduce the moisture content. At this time, plate-fin heat exchangers are required to assist in cooling and heat exchange. However, current plate-fin heat exchangers are not convenient to adjust the airflow concentration position, the initial condensation effect is not good, and it is also not convenient to automatically control the airflow to dry the heat exchanger pipes when the steam stops. When there is some steam inside the heat exchanger, the sealing time is too long, which can easily increase corrosion. It is also not convenient for the staff to clean the heat exchange pipes without stopping the gas supply. Directly stopping the gas supply will directly affect the steam exhaust. When cleaning is required, the operation is cumbersome and it is not easy to maintain the anti-scaling effect of the pipes.

[0003] Therefore, we propose a plate-fin heat exchanger with condensate drainage function. Summary of the Invention

[0004] The purpose of this invention is to provide a plate-fin heat exchanger with condensate drainage function, so as to solve the problems mentioned in the background art that the current plate-fin heat exchanger is not convenient to automatically control the automatic drainage and drying of the plate-fin heat exchanger when the steam stops being discharged, and is also not convenient for the staff to clean the heat exchange pipeline without stopping the gas flow.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plate-fin heat exchanger with condensate drainage function, comprising a heat exchange mounting component, an angle adjustment component for adjusting the air inlet angle, an air inlet detection component for controlling air blowing dehumidification, a venting control component for controlling the venting of the heat exchange mounting component, a cleaning control component for controlling non-stop cleaning, and the heat exchange mounting component comprising a heat exchange mounting frame and heat exchange tubes, wherein two heat exchange tubes are fixedly mounted on the heat exchange mounting frame and are symmetrically installed.

[0006] Preferably, the heat exchange mounting component further includes: a discharge pipe and fins, with a discharge pipe fixedly installed on each of the two heat exchange pipes, and a flange provided at the end of the discharge pipe; a gap is provided between the end of the heat exchange pipe and the discharge pipe; a row of fins is fixedly installed inside the heat exchange mounting frame; and the two heat exchange pipes pass through a row of fins respectively.

[0007] Preferably, the angle adjustment component includes: an adjustment mounting frame, an adjustment guide plate, and fastening bolts. The adjustment mounting frame is fixedly installed on the back of the heat exchange mounting frame. The adjustment mounting frame has screw holes. The adjustment mounting frame is used to be installed on the heat exchange fan housing by bolts. A row of adjustment guide plates is fitted inside the adjustment mounting frame. Fastening bolts are inserted into both ends of the row of adjustment guide plates. The ends of the two fastening bolts are threaded to the adjustment mounting frame, and the fastening bolts are used to tighten and fix the adjustment guide plates.

[0008] Preferably, the air intake detection component includes: an air intake detection shell, a guide tube, a fan tube, and an air intake pipe. The air intake detection shell is fixedly installed at the ends of two heat exchange tubes. Two guide tubes are fixedly installed inside the air intake detection shell, and the two guide tubes are respectively aligned with the two heat exchange tubes. A fan tube is fixedly installed on the air intake detection shell, and a solenoid valve is provided on the fan tube. An electric fan is connected to the outside of the fan tube. An air intake pipe is fixedly installed on the air intake detection shell. The air intake pipe is used to connect to the steam exhaust pipe.

[0009] Preferably, the air intake detection component further includes: an air intake switch, a spring frame, a blocking post, and a stop ring. The air intake switch is fixedly installed inside the air intake pipe. The spring frame is fixedly installed inside the air intake pipe, and the spring frame has a through hole. A blocking post is slidably inserted into the air intake switch, and a spring is sleeved on the outside of the blocking post, with the spring connecting the blocking post and the spring frame. The end of the blocking post has a beveled structure. A stop ring is fixedly sleeved inside the air intake pipe, and the end of the blocking post presses against the stop ring. The end of the blocking post presses against the air intake switch. The air intake switch is electrically connected to a solenoid valve on the fan pipe and an electric fan connected to the outside of the fan pipe.

[0010] Preferably, the venting control component includes: a venting mounting shell and a liquid level switch, wherein the top of the venting mounting shell is fixedly installed at the bottom of two heat exchange tubes via a three-way pipe; the venting mounting shell connects to the bottom of the two heat exchange tubes; and a liquid level switch is fixedly installed inside the venting mounting shell via a bracket.

[0011] Preferably, the venting control component further includes: a float and a drain pipe; the float is slidably fitted inside the venting mounting housing and is located below the level switch; the float is used to be controlled to float by condensate; two drain pipes are fixedly installed at the bottom of the venting mounting housing, and each drain pipe is equipped with a solenoid valve; the level switch is electrically connected to the solenoid valve on the left drain pipe; the air intake switch is electrically connected to the solenoid valve on the right drain pipe.

[0012] Preferably, the cleaning control component includes: a cleaning reel and a winding rope, wherein the cleaning reel is rotatably mounted on the air intake detection housing; the end of the cleaning reel passes through the air intake detection housing; the end of the cleaning reel is provided with a handle; and two winding ropes are fixedly mounted on the cleaning reel, and the two winding ropes are wound on the cleaning reel.

[0013] Preferably, the cleaning control component further includes: an inner cylinder, a tension spring, and an outer cylinder. The two ends of the winding rope are respectively fixedly installed with the inner cylinder, and the outer cylinder is slidably sleeved on the inner cylinder. The inner cylinder is provided with a through groove. The outer cylinder is internally sleeved with a tension spring, and the tension spring is connected between the inner cylinder and the outer cylinder. The through groove on the inner cylinder is used to be blocked by the outer cylinder.

[0014] Preferably, the cleaning control component further includes: a sponge ball, with a sponge ball fixedly sleeved on each of the two outer cylinders, and the two sponge balls respectively sleeved inside the two guide cylinders; the sponge ball is used to be pushed to the end of the heat exchange tube by air pressure.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a venting control component to automatically detect and control the discharge of condensate, preventing excessive water accumulation. It also avoids the risks of excessive discharge due to manual condensate removal, which can lead to the release of steam exhaust and potentially burns to workers. Combined with an intake detection component, it automatically controls the steam exhaust pipe connected to the intake pipe to stop venting during boiler shutdown, maintenance, or pauses. This venting and drying process protects the heat exchange tubes, preventing residual static moisture and condensate from further accelerating corrosion and extending their lifespan. The automatic venting method also prevents human error, resulting in a more rational structure and forced control.

[0016] The use of cleaning control components allows staff to quickly and continuously clean the heat exchange tubes without airflow, maintaining the heat exchange tubes' anti-scaling effect during actual use. It also facilitates real-time airflow and exhaust inside the heat exchange tubes, ensuring continuous heat exchange while avoiding frequent start-stop cycles. The structure is simple to operate, and the inner cylinder allows for automatic pressure relief during pull-back, maintaining smooth airflow.

[0017] The use of angle adjustment components makes it easy to adjust the air inlet angle, allowing the airflow of the heat exchange fan to be concentrated more at the bottom of the heat exchange tube, that is, at the initial air inlet. This promotes faster condensation of the steam exhaust gas in the initial stage, facilitating rapid collection. The structure is more reasonable, and corrosion of the upper section of the heat exchange tube is reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a plate-fin heat exchanger with condensate drainage function according to the present invention. Figure 2This is a schematic diagram of the bottom structure of a plate-fin heat exchanger with condensate drainage function according to the present invention. Figure 3 This is a cross-sectional view of the internal structure of a plate-fin heat exchanger with condensate drainage function according to the present invention. Figure 4 This is a schematic diagram of the heat exchange mounting component of the present invention; Figure 5 For the present invention Figure 2 Enlarged view of the structure of region B in the middle; Figure 6 This is a schematic diagram of the intake detection element of the present invention; Figure 7 For the present invention Figure 3 Enlarged view of the structure of region C in the middle; Figure 8 This is a schematic diagram of the venting control component of the present invention; Figure 9 This is a schematic diagram of the cleaning control component of the present invention; Figure 10 For the present invention Figure 6 Enlarged view of the structure of region E in the middle; Figure 11 This is a schematic diagram of the installation position of the inner cylinder of the present invention.

[0019] In the diagram: 1. Heat exchange mounting components; 101. Heat exchange mounting bracket; 102. Heat exchange tube; 1021. Drain pipe; 103. Plate fin; 2. Angle adjustment components; 201. Adjustment mounting frame; 202. Adjustment guide plate; 203. Fastening bolt; 3. Air intake detection components; 301. Air intake detection housing; 3011. Guide tube; 3012. Fan pipe; 302. Air intake pipe; 303. Air intake switch; 304. Spring frame; 305. Shielding column; 306. Stop ring; 4. Drain control components; 401. Drain mounting housing; 402. Liquid level switch; 403. Float; 404. Drain pipe; 5. Cleaning control components; 501. Cleaning winding reel; 502. Winding rope; 503. Inner cylinder; 5031. Tension spring; 504. Outer cylinder; 505. Sponge ball. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 11 As shown: This invention provides a technical solution: a plate-fin heat exchanger with condensate drainage function, comprising a heat exchange mounting component 1, an angle adjustment component 2 mounted on the heat exchange mounting component 1 for adjusting the air inlet angle; an air inlet detection component 3 mounted on the heat exchange mounting component 1 for controlling air blowing dehumidification; a venting control component 4 mounted at the bottom of the heat exchange mounting component 1 for controlling the venting of the heat exchange mounting component 1; a cleaning control component 5 mounted on the air inlet detection component 3 for controlling non-stop cleaning; the heat exchange mounting component 1 includes: a heat exchange mounting frame 101 and heat exchange tubes 102, with two heat exchange tubes 102 fixedly mounted on the heat exchange mounting frame 101, and the two heat exchange tubes 102 are symmetrically installed.

[0022] The heat exchange mounting component 1 further includes: a discharge pipe 1021 and fins 103. The discharge pipe 1021 is fixedly mounted on each of the two heat exchange pipes 102, and the end of the discharge pipe 1021 is provided with a flange. A gap is provided between the end of the heat exchange pipe 102 and the discharge pipe 1021. A row of fins 103 is fixedly mounted inside the heat exchange mounting frame 101. The two heat exchange pipes 102 pass through the row of fins 103. The angle adjustment component 2 includes: an adjustment mounting frame 201, an adjustment guide plate 202, and fastening bolts 203. The adjustment mounting frame 201 is fixedly mounted on the back of the heat exchange mounting frame 101. The adjustment mounting frame 201 is provided with screw holes. The adjustment mounting frame 201 is used to be mounted on the heat exchange fan casing by bolts. 01 has a row of adjustable guide plates 202 attached inside; each end of the adjustable guide plate 202 is connected to a fastening bolt 203; the ends of the two fastening bolts 203 are threaded to the adjusting mounting frame 201, and the fastening bolts 203 are used to fasten and fix the adjusting guide plate 202. The angle adjustment component 2 can be used to easily adjust the air inlet angle, so that the air force of the heat exchange fan is more concentrated below the heat exchange tube 102, that is, the initial air inlet, which promotes the faster condensation of steam exhaust gas in the initial stage, which is convenient for rapid collection. The structure is more reasonable and reduces the corrosion of the upper section of the heat exchange tube 102. The angle of the adjustable guide plate 202 can be adjusted by loosening the fastening bolt 203 with a wrench, and then the fastening bolt 203 can be tightened.

[0023] The intake detection component 3 includes: an intake detection housing 301, a guide tube 3011, a fan pipe 3012, and an intake pipe 302. The intake detection housing 301 is fixedly installed at the ends of two heat exchange tubes 102. Two guide tubes 3011 are fixedly installed inside the intake detection housing 301, and the two guide tubes 3011 are respectively aligned with the two heat exchange tubes 102. The fan pipe 3012 is fixedly installed on the intake detection housing 301, and a solenoid valve is provided on the fan pipe 3012. An electric fan is connected to the fan pipe 3012. The intake pipe 3012 is fixedly installed on the intake detection housing 301. 2; The intake pipe 302 is used to connect to the steam exhaust pipe; the intake detection component 3 also includes: an intake switch 303, a spring bracket 304, a blocking post 305, and a stop ring 306. The intake switch 303 is fixedly installed inside the intake pipe 302; the spring bracket 304 is fixedly installed inside the intake pipe 302, and the spring bracket 304 is provided with a through hole; the blocking post 305 is slidably inserted into the intake switch 303, and a spring is sleeved on the outside of the blocking post 305, and the spring on the outside of the blocking post 305 is connected between the blocking post 305 and the spring bracket 304; the end of the blocking post 305 The structure is inclined; a stop ring 306 is fixedly sleeved inside the air inlet pipe 302, and the end of the shielding column 305 is pressed against the stop ring 306; the end of the shielding column 305 presses against the air inlet switch 303; the air inlet switch 303 is electrically connected to the solenoid valve on the fan pipe 3012 and the electric fan connected to the outside of the fan pipe 3012; the venting control component 4 includes: a venting mounting shell 401 and a level switch 402, the top of the venting mounting shell 401 is fixedly installed at the bottom of the two heat exchange tubes 102 through a three-way pipe; the venting mounting shell 401 connects to the bottom of the two heat exchange tubes 102; the venting mounting shell 401... A liquid level switch 402 is fixedly installed inside the 01 via a bracket; the venting control component 4 also includes a float 403 and a drain pipe 404. The float 403 is slidably sleeved inside the venting housing 401 and is located below the liquid level switch 402; the float 403 is used to float up under the control of condensate; two drain pipes 404 are fixedly installed at the bottom of the venting housing 401, and each of the two drain pipes 404 is equipped with a solenoid valve; the two drain pipes 404 are respectively connected to hoses to discharge condensate; the liquid level switch 402 is electrically connected to the solenoid valve on the left drain pipe 404;The air inlet switch 303 is electrically connected to the solenoid valve on the drain pipe 404 on the right side. The evacuation control component 4 enables automatic control of condensate drainage after detection, preventing excessive water accumulation and avoiding the risk of over-drainage, excessive steam exhaust, and burns to workers caused by manual condensate drainage. This structure ensures smooth airflow through automatic control and prevents human error. Furthermore, in conjunction with the air inlet detection component 3, it automatically controls the steam exhaust pipe connected to the air inlet pipe 302 to stop venting during boiler shutdown, maintenance, or pauses, thus performing evacuation and drying protection on the heat exchange tubes 102. This prevents residual static moisture and condensate inside the heat exchange tubes 102 from further accelerating corrosion and improving the performance of the heat exchange tubes 102. The service life is extended, and the automatic control of ventilation and evacuation avoids human error. The structure is more reasonable, enabling forced control and making it more suitable for small boiler production. If air intake stops at the inlet pipe 302, the air pressure acting on the shielding column 305 decreases. The spring on the shielding column 305 pushes it back to its original position, engaging the stop ring 306 and squeezing the inlet switch 303. At this time, the inlet switch 303 controls the solenoid valve on the fan pipe 3012 to open, and the fan connected to the fan pipe 3012 starts to provide airflow. Simultaneously, it controls the solenoid valve on the drain pipe 404 on the right to open, assisting in the complete drainage of condensate. As the fan connected to the fan pipe 3012 continues to provide airflow, the two heat exchange tubes 102 can be dried.

[0024] In Example 2, based on Example 1, the cleaning control component 5 includes: a cleaning take-up reel 501 and a take-up rope 502. The cleaning take-up reel 501 is rotatably mounted on the air intake detection housing 301; the end of the cleaning take-up reel 501 passes through the air intake detection housing 301; a handle is provided at the end of the cleaning take-up reel 501; two take-up ropes 502 are fixedly mounted on the cleaning take-up reel 501, and the two take-up ropes 502 are wound on the cleaning take-up reel 501; the cleaning control component 5 also includes: an inner cylinder 503, a tension spring 5031, and an outer cylinder 5031. 04. Two winding ropes 502 are respectively fixedly installed with inner tubes 503 at their ends, and outer tubes 504 are slidably sleeved on the inner tubes 503; the inner tube 503 is provided with a through groove; a tension spring 5031 is sleeved inside the outer tube 504, and the tension spring 5031 is connected between the inner tube 503 and the outer tube 504; the through groove on the inner tube 503 is used to be blocked by the outer tube 504; the cleaning control component 5 also includes: a sponge ball 505, and a sponge ball 505 is fixedly sleeved on the two outer tubes 504 respectively, and the two sponge balls 505 are... Do not attach it to the inside of the two guide tubes 3011; the sponge ball 505 is used to be pushed to the end of the heat exchange tube 102 by air pressure. The cleaning control component 5 allows the operator to quickly and continuously clean the heat exchange tube 102 without air leakage, maintaining the anti-scaling effect of the heat exchange tube 102 during actual use. It also facilitates real-time air circulation and discharge inside the heat exchange tube 102, ensuring continuous heat exchange and avoiding frequent start-stop switching of the heat exchange tube 102. The structure and operation are simple. The inner cylinder 503 can automatically depressurize during pull-back, maintaining... With smooth airflow, manually rotate the cleaning reel 501 to reel in the reel rope 502. This will pull the inner cylinder 503, causing the sponge ball 505 to move inside the heat exchange tube 102. During this process, the steam exhaust gas pressure inside the heat exchange tube 102 pushes the sponge ball 505 to move and clean, which can drive the outer cylinder 504 to move and stretch the tension spring 5031. At this time, the outer cylinder 504 no longer completely blocks the through groove on the inner cylinder 503, allowing air to pass through the through groove on the inner cylinder 503, thus preventing the steam exhaust gas inside the heat exchange tube 102 from being blocked.

[0025] The working principle of this embodiment is as follows: First, the air inlet pipe 302 is connected to the steam exhaust pipe. The mounting frame 201 is then installed on the heat exchanger fan housing with bolts. As the steam exhaust flows through the heat exchanger tube 102, the heat exchanger fan provides airflow to facilitate heat exchange with the fins 103, promoting the cooling and condensation of the steam exhaust. During this process, the core airflow generated by the heat exchanger fan can be guided by adjusting the guide plate 202 to concentrate the airflow towards the initial section of the heat exchanger tube 102, thus improving the heat exchange effect in the initial section. The fastening screws are then loosened with a wrench. Bolt 203 can be used to adjust the angle of the guide plate 202, and then tighten the fastening bolt 203; the condensate inside the two heat exchange tubes 102 will be introduced into the air intake detection housing 301 under the action of gravity. When the liquid level inside the air intake detection housing 301 rises, the float 403 is controlled by the condensate to rise, squeezing the liquid level switch 402, which in turn controls the solenoid valve on the drain pipe 404 on the left to open, automatically draining the condensate. As the liquid level inside the air intake detection housing 301 drops, the float 403... 03. When the liquid level switch 402 is no longer pressed, the solenoid valve on the left drain pipe 404 will be closed to prevent leakage. Simultaneously, when air enters through the steam exhaust pipe connected to the air inlet pipe 302, the air pressure will push the shielding column 305 and the stop ring 306 apart, ensuring air intake. The shielding column 305 will no longer press the air inlet switch 303. At this time, the air inlet switch 303 will keep the solenoid valves on the fan pipe 3012 and the right drain pipe 404 closed. Conversely, if air intake stops at the air inlet pipe 302, the solenoid valve will remain closed. When the air pressure on the shielding column 305 decreases, the spring on the shielding column 305 pushes the shielding column 305 to reset and fit against the stop ring 306, and squeezes the air inlet switch 303. At this time, the air inlet switch 303 can control the solenoid valve on the fan pipe 3012 to open, and the fan connected to the fan pipe 3012 also starts to provide air power. At the same time, it controls the solenoid valve on the drain pipe 404 on the right to open, assisting in the complete drainage of condensate. As the fan connected to the fan pipe 3012 continues to provide air power, the two heat exchange tubes 102 can be dried.The initial position of the sponge ball 505 is at the upper end of the heat exchange tube 102. Because there is a gap between the upper end of the heat exchange tube 102 and the exhaust pipe 1021, it does not affect the normal exhaust of the exhaust pipe 1021. When the heat exchange tube 102 needs to be cleaned later, the cleaning take-up wheel 501 is manually rotated to take up the take-up rope 502. At this time, the inner cylinder 503 is pulled to move the sponge ball 505 inside the heat exchange tube 102. During the process, the steam exhaust gas pressure inside the heat exchange tube 102 pushes the sponge ball 505 to move, which can drive the outer cylinder 503. 4. Move the extension spring 5031. At this time, the outer cylinder 504 no longer completely blocks the through groove on the inner cylinder 503, allowing ventilation through the through groove on the inner cylinder 503 to prevent the steam exhaust gas inside the heat exchange tube 102 from being blocked. As the sponge ball 505 is pulled to the guide cylinder 3011, the cleaning take-up wheel 501 can be manually and quickly released. Under the action of the air pressure inside the heat exchange tube 102, the sponge ball 505, together with the inner cylinder 503, can be pushed to slide to the upper end of the heat exchange tube 102. During this process, the heat exchange tube 102 will also be wiped clean.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plate-fin heat exchanger with condensate drainage function, comprising a heat exchange mounting member (1), an angle adjusting member (2) is mounted on the heat exchange mounting member (1), characterized in that: The angle adjusting piece (2) is used for adjusting the air inlet angle; the heat exchange mounting piece (1) is provided with an air inlet detecting piece (3); the air inlet detecting piece (3) is used for controlling air blowing dehumidification; The heat exchange mounting piece (1) is provided with an emptying control piece (4) at the bottom; the emptying control piece (4) is used for controlling emptying of the heat exchange mounting piece (1); The air inlet detecting piece (3) is provided with a cleaning control piece (5); the cleaning control piece (5) is used for controlling non-stop cleaning; The heat exchange mounting piece (1) comprises a heat exchange mounting frame (101) and heat exchange pipes (102), and two heat exchange pipes (102) are fixedly installed on the heat exchange mounting frame (101); The air inlet detecting piece (3) comprises an air inlet detecting shell (301), guide cylinders (3011), a fan pipe (3012) and an air inlet pipe (302), the air inlet detecting shell (301) is fixedly installed at the ends of the two heat exchange pipes (102); two guide cylinders (3011) are fixedly installed inside the air inlet detecting shell (301), and the two guide cylinders (3011) are aligned with the two heat exchange pipes (102) respectively; the fan pipe (3012) is fixedly installed on the air inlet detecting shell (301), and an electromagnetic valve is arranged on the fan pipe (3012); the fan pipe (3012) is connected with an electric fan; the air inlet pipe (302) is fixedly installed on the air inlet detecting shell (301).

2. The plate-fin heat exchanger with condensate drainage function according to claim 1, characterized in that: The heat exchange mounting piece (1) further comprises discharge pipes (1021) and plate fins (103), the discharge pipes (1021) are fixedly installed on the two heat exchange pipes (102) respectively, and flanges are arranged at the ends of the discharge pipes (1021); a space is arranged between the ends of the heat exchange pipes (102) and the discharge pipes (1021); one row of plate fins (103) is fixedly installed inside the heat exchange mounting frame (101); the two heat exchange pipes (102) pass through the one row of plate fins (103) respectively.

3. The plate-fin heat exchanger with condensate drainage function according to claim 1, characterized in that: The angle adjusting piece (2) comprises an adjusting mounting frame (201), adjusting guide plates (202) and fastening bolts (203), the adjusting mounting frame (201) is fixedly installed on the back of the heat exchange mounting frame (101); screw holes are arranged on the adjusting mounting frame (201); the adjusting mounting frame (201) is used for being mounted on the heat exchange fan shell through bolts; one row of adjusting guide plates (202) is attached inside the adjusting mounting frame (201); the fastening bolts (203) are inserted into the two ends of the one row of adjusting guide plates (202) respectively; the ends of the two fastening bolts (203) are threadedly connected to the adjusting mounting frame (201) respectively, and the fastening bolts (203) are used for tightly fixing the adjusting guide plates (202).

4. The plate-fin heat exchanger with condensate drainage function according to claim 1, characterized in that: The air inlet detecting piece (3) further comprises: an air inlet switch (303), a spring frame (304), a shielding column (305) and a stop ring (306), the air inlet switch (303) is fixedly installed inside the air inlet pipe (302); the spring frame (304) is fixedly installed inside the air inlet pipe (302), and a circle of through holes are arranged on the spring frame (304); the shielding column (305) is slidably inserted on the air inlet switch (303), a spring is sleeved outside the shielding column (305), and the spring is connected between the shielding column (305) and the spring frame (304); the end of the shielding column (305) is a bevel structure; the stop ring (306) is fixedly sleeved inside the air inlet pipe (302), and the end of the shielding column (305) is extruded and attached to the stop ring (306); the end of the shielding column (305) extrudes the air inlet switch (303); the air inlet switch (303) is electrically connected with the electromagnetic valve on the fan pipe (3012) and the electric fan connected to the fan pipe (3012).

5. The plate-fin heat exchanger with condensate drainage function according to claim 4, characterized in that: The emptying control piece (4) comprises: an emptying installation shell (401) and a liquid level switch (402), the top of the emptying installation shell (401) is fixedly installed at the bottom of the two heat exchange pipes (102) through a three-way pipe; the emptying installation shell (401) is communicated with the bottom of the two heat exchange pipes (102); the liquid level switch (402) is fixedly installed inside the emptying installation shell (401) through a support.

6. The plate-fin heat exchanger with condensate drainage function according to claim 5, characterized in that: The emptying control piece (4) further comprises: a floating block (403) and a drain pipe (404), the floating block (403) is slidably sleeved inside the emptying installation shell (401), and the floating block (403) is located below the liquid level switch (402); the floating block (403) is used for being controlled to float up by condensed water; two drain pipes (404) are fixedly installed at the bottom of the emptying installation shell (401), and electromagnetic valves are arranged on the two drain pipes (404) respectively; the liquid level switch (402) is electrically connected with the electromagnetic valve on the left drain pipe (404); the air inlet switch (303) is electrically connected with the electromagnetic valve on the right drain pipe (404).

7. The plate-fin heat exchanger with condensate drainage function according to claim 1, characterized in that: The cleaning control piece (5) comprises: a cleaning winding wheel (501) and a winding rope (502), the cleaning winding wheel (501) is rotatably installed on the air inlet detecting shell (301); the end of the cleaning winding wheel (501) penetrates through the air inlet detecting shell (301); a handle is arranged at the end of the cleaning winding wheel (501); two winding ropes (502) are fixedly installed on the cleaning winding wheel (501), and the two winding ropes (502) are wound on the cleaning winding wheel (501).

8. The plate-fin heat exchanger with condensate drainage function according to claim 7, characterized in that: The cleaning control piece (5) further comprises an inner cylinder (503), a tension spring (5031) and an outer cylinder (504), two ends of the winding rope (502) are respectively fixedly provided with the inner cylinder (503), and the inner cylinder (503) is slidably sleeved with the outer cylinder (504); a ring of through grooves is arranged on the inner cylinder (503); the tension spring (5031) is sleeved on the inner cylinder (503), and the tension spring (5031) is connected between the inner cylinder (503) and the outer cylinder (504).

9. The plate-fin heat exchanger with condensate drainage function according to claim 8, characterized in that: The cleaning control piece (5) further comprises a sponge ball (505), the two outer cylinders (504) are respectively fixedly sleeved with the sponge ball (505), and the two sponge balls (505) are respectively sleeved on the inner sides of the two guide cylinders (3011).

Images