Surface air cooler

Abstract

The invention discloses a surface air cooler, and belongs to the technical field of surface air coolers, the surface air cooler comprises a mounting rack, a heat exchange tube and fins are mounted on the mounting rack, a plurality of temperature sensors are mounted on the heat exchange tube, the temperature sensors are used for collecting temperature detection signals of the outer wall of the heat exchange tube, a plurality of protrusions are arranged on the side face of each fin, and the protrusions are used for detecting the temperature of the outer wall of the heat exchange tube. The mounting rack comprises a bottom plate and a top plate, a water collecting tank is arranged in the bottom plate, a heating resistance wire II is mounted in the bottom plate, and the heating resistance wire II is controlled to be opened and closed in response to the temperature detection signal. The heat exchanger has the effect of reducing the possibility that the heat exchange pipes are frozen.

Description

Technical Field

[0001] The present application relates to the technical field of surface coolers, and in particular to a surface cooler. Background Art

[0002] With the continuous advancement of industrialization, various refrigeration, air conditioning, and ventilation systems are increasingly being used in industrial production, construction, transportation, and other fields. As a key heat exchange component in refrigeration systems, surface coolers are widely used in air conditioning, refrigeration, and air conditioning equipment. They effectively transfer and remove heat from hot air through a heat transfer medium. The performance of surface coolers directly affects the cooling efficiency, energy consumption, and operational stability of the entire system.

[0003] In extremely cold regions, surface coolers must be protected against freezing during winter when they are out of service. Existing antifreeze methods typically drain the accumulated water from the surface cooler through a drain pipe, but this process can be difficult to completely drain, leaving the water potentially damaged by freezing. Summary of the Invention

[0004] In order to improve the problem that the surface cooler is easily frozen in winter, the present application provides a surface cooler.

[0005] The surface cooler provided in this application adopts the following technical solution: A surface cooler includes a mounting frame, on which heat exchange tubes and fins are mounted, and on which several temperature sensors are mounted, and which are used to collect temperature detection signals from the outer walls of the heat exchange tubes. The sides of the fins are provided with several protrusions, and heating resistor wire 1 is provided in the protrusions, and heating resistor wire 1 is controlled to open and close in response to the temperature detection signal. The mounting frame includes a bottom plate and a top plate, and a water collecting trough is provided in the bottom plate, and heating resistor wire 2 is mounted in the bottom plate, and heating resistor wire 2 is controlled to open and close in response to the temperature detection signal.

[0006] By adopting the above technical solution, heating resistor wire 1 is set on the fin and heating resistor wire 2 is set in the water collection tank. When the temperature sensor on the heat exchange tube detects that the temperature on the heat exchange tube is low, the temperature sensor transmits the temperature detection signal to heating resistor wire 1 and heating resistor wire 2. Heating resistor wire 1 and heating resistor wire 2 start working after responding to the temperature detection signal. Heating resistor wire 1 heats the fin and then transmits the temperature to the heat exchange tube, reducing the possibility of the heat exchange tube being frozen. Heating resistor wire 2 heats the bottom plate to facilitate the discharge of water in the water collection tank.

[0007] Preferably, an installation groove is provided on the inner bottom surface of the top plate, and a installation plate is slidably installed in the installation groove along the length direction of the top plate. A clearance groove is provided on the bottom surface of the installation plate, and a fan and several dust baffles are fixed in the clearance groove. The dust baffles are located above the fan, and a heating resistor wire three is installed between the fan and the dust baffles. The heating resistor wire three controls opening and closing in response to the temperature detection signal, and a driving component for driving the installation plate to move back and forth along the length direction of the top plate is provided on the top plate.

[0008] By adopting the above technical solution, when the temperature sensor on the heat exchange tube detects that the temperature on the heat exchange tube is low, the heating resistor wire starts to heat according to the temperature detection signal. At the same time, the mounting plate moves along the length direction of the top plate, and the fan transmits hot air to the fins and the heat exchange tubes, so that the water droplets attached to the outer wall of the fins and the heat exchange tubes are accelerated to fall into the water collection tank, and the hot air can evenly heat the fins and the heat exchange tubes.

[0009] Preferably, the drive assembly includes a reciprocating screw rotatably installed in the mounting groove, the mounting plate is sleeved on the outer periphery of the reciprocating screw, the mounting plate is threadedly matched with the reciprocating screw, a guide rod is fixed in the mounting groove, the guide rod and the reciprocating screw are arranged parallel to each other, the mounting plate is sleeved on the outer periphery of the guide rod, a drive motor is installed on the top plate, and the output end of the drive motor is coaxially fixedly connected to the end of the reciprocating screw.

[0010] By adopting the above technical solution, the drive motor is started, and the drive motor drives the reciprocating screw to rotate. The guide rod provides a guiding effect on the mounting plate, so that the mounting plate can drive the fan to move back and forth along the length direction of the top plate, so that the fan can heat the fins and heat exchange tubes.

[0011] Preferably, two vertical plates are installed on the bottom surface of the mounting plate, the side surfaces of the vertical plates are in contact with the side surfaces of the fins, and the bottom surface of the mounting plate can be in contact with the top surface of the fins.

[0012] By adopting the above technical solution, the bottom surface of the mounting plate fits with the top surface of the fin, and the side surface of the vertical plate fits with the side surface of the fin. The mounting plate and the vertical plate surround the two sides of the fin to form a relatively closed space, so that the hot air gathers between the vertical plate and the fin, so that the hot air can blow downward the water droplets attached to the fin and the outer wall of the heat exchange tube.

[0013] Preferably, both sides of the bottom plate are respectively connected with water outlet pipes connected to the water collecting tank, a push plate is installed in the water collecting tank, the bottom end of the vertical plate is fixedly connected to the push plate, a horizontally arranged water absorption plate is installed on the top of the push plate, the top surface of the water absorption plate is in contact with the bottom surface of the fin, and an extrusion assembly for extruding the water absorption plate is installed in the water collecting tank.

[0014] By adopting the above technical solution, the vertical plate can drive the pushing plate to move along the length direction of the bottom plate. During the movement of the pushing plate, the water in the water collection tank is pushed toward the outlet pipe, thereby accelerating the discharge of water in the water collection tank. At the same time, the water absorption plate can absorb the water droplets attached to the bottom end of the fin, and then use the extrusion component to squeeze the water in the water absorption plate.

[0015] Preferably, the pushing plate includes a movable plate, a movable groove is provided on the bottom surface of the movable plate, a scraper is installed on the movable plate for vertical sliding through the movable groove, the bottom of the scraper is set to a pointed end, a first spring is fixed on the top surface of the scraper, the top of the first spring is fixedly connected to the inner top surface of the movable groove, an electromagnet is embedded and fixed on the inner top surface of the movable groove, the electromagnet controls opening and closing in response to the temperature detection signal, a magnetic block 1 is fixed on the top surface of the scraper, and the electromagnet repels the magnetic block 1 when energized.

[0016] By adopting the above technical solution, when the vertical plate drives the pushing plate to move along the length direction of the bottom plate, the electromagnet is started, the electromagnet and the magnetic block repel each other, and the scraper moves downward under the repulsive force of the electromagnet and abuts against the inner bottom surface of the water collection tank, so that the scraper can scrape off impurities attached to the inner bottom surface of the water collection tank.

[0017] Preferably, the squeezing assembly includes two squeezing rollers, the squeezing rollers are located on one side of the bottom plate, the water absorption plate can be moved between the two squeezing rollers, and a pushing member for driving the two squeezing rollers to approach each other vertically is provided on the bottom plate.

[0018] By adopting the above technical solution, the pushing plate drives the water absorption plate to move between the two squeezing rollers, the pushing member drives the two squeezing rollers to move toward the direction close to the water absorption plate, the water absorption plate moves horizontally between the two squeezing rollers, and the squeezing rollers squeeze the water absorption plate.

[0019] Preferably, sliding blocks are respectively installed on both sides of the squeezing roller, and rotating rods are respectively installed at both ends of the squeezing roller, the rotating rods are rotatably connected to the sliding blocks, and a sliding groove is provided on the inner wall of the water collecting trough, and the sliding block slides vertically with the bottom plate through the sliding groove, and the sliding block includes a slider 1 and a slider 2, and a second spring is fixed to the bottom surface of the slider 2, and the end of the second spring away from the slider 2 is fixedly connected to the inner wall of the sliding groove, and the pushing member includes a horizontally arranged driving rod, and two connecting rods are sleeved on both ends of the driving rod, and the end of the connecting rod away from the driving rod is sleeved on the outer periphery of the rotating rod.

[0020] By adopting the above technical solution, the sliding block provides a guiding effect on the squeezing rollers, so that the two squeezing rollers always slide vertically. The two squeezing rollers maintain a certain distance under the elastic force of the second spring, so that the water absorption plate can smoothly enter between the two squeezing rollers. After the water absorption plate enters between the two squeezing rollers, the driving rod moves in the direction away from the water absorption plate, and the driving rod drives the two squeezing rollers to approach each other through the connecting rod, so that the squeezing rollers squeeze the water absorption plate.

[0021] Preferably, a second magnetic block is fixedly mounted on the outer periphery of the driving rod, a third magnetic block is fixedly mounted on the side of the water absorption plate close to the squeezing roller, and the third magnetic block and the second magnetic block repel each other.

[0022] By adopting the above technical solution, when the water absorption plate enters between the two squeezing rollers, the repulsive force of the magnet block three on the magnet block two is greater than the elastic force of the second spring on the slider two, causing the two squeezing rollers to move toward the water absorption plate and squeeze the water absorption plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. A heating resistor wire 1 is set on the fin, and a heating resistor wire 2 is set in the water collection tank. When the temperature sensor on the heat exchange tube detects that the temperature on the heat exchange tube is low, the temperature sensor transmits the temperature detection signal to the heating resistor wire 1 and the heating resistor wire 2. The heating resistor wires 1 and 2 start working after responding to the temperature detection signal. The heating resistor wire 1 heats the fin and then transmits the temperature to the heat exchange tube to reduce the possibility of the heat exchange tube being frozen. The heating resistor wire 2 heats the bottom plate to facilitate the discharge of water in the water collection tank. 2. When the temperature sensor on the heat exchange tube detects that the temperature on the heat exchange tube is low, the heating resistor wire starts heating according to the temperature detection signal. At the same time, the mounting plate moves along the length direction of the top plate, and the fan transmits hot air to the fins and heat exchange tubes, so that the water droplets attached to the fins and the outer wall of the heat exchange tube are accelerated to fall into the water collection tank, and the hot air can evenly heat the fins and heat exchange tubes. 3. The bottom surface of the mounting plate fits with the top surface of the fin, and the side surface of the vertical plate fits with the side surface of the fin. The mounting plate and the vertical plate surround the two sides of the fin to form a relatively closed space, so that the hot air gathers between the vertical plate and the fin, so that the hot air can blow downward the water droplets attached to the fin and the outer wall of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the surface cooler of an embodiment of the present application.

[0025] Figure 2 It is a cross-sectional view of the top plate in the surface cooler of an embodiment of the present application.

[0026] Figure 3 It is a schematic structural diagram of the mounting plate in the surface cooler of an embodiment of the present application.

[0027] Figure 4 It is a cross-sectional view of the bottom plate of the surface cooler in an embodiment of the present application.

[0028] Figure 5 It is a schematic structural diagram of the push plate in the surface cooler of an embodiment of the present application.

[0029] Reference numerals: 1, mounting frame; 11, heat exchange tube; 12, fin; 121, protrusion; 122, heating resistor wire 1; 13, valve; 2, top plate; 21, mounting groove; 22, reciprocating screw rod; 23, guide rod; 24, drive motor; 3, bottom plate; 31, water collecting trough; 32, heating resistor wire 2; 33, water outlet pipe; 34, sliding groove; 4, mounting plate; 41, clearance groove; 42, fan; 43, dust shield; 44. Heating resistor wire three; 45. Vertical plate; 5. Push plate; 51. Moving plate; 52. Moving groove; 53. Scraper; 54. First spring; 55. Electromagnet; 56. Magnetic block one; 57. Water absorption plate; 571. Magnetic block three; 6. Extrusion roller; 61. Sliding block; 611. Sliding block one; 612. Sliding block two; 62. Rotating rod; 63. Driving rod; 64. Connecting rod; 65. Magnetic block two; 66. Second spring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 This application is described in further detail.

[0031] The embodiment of the present application discloses a surface cooler. Figure 1 and Figure 2The surface cooler includes a mounting frame 1, on which a heat exchange tube 11 is mounted. Valves 13 are provided at the inlet and outlet of the heat exchange tube 11. The mounting frame 1 is provided with a plurality of mutually parallel fins 12, which are sleeved around the outer circumference of the heat exchange tube 11. A plurality of protrusions 121 with triangular cross-sections are fixed to the sides of the fins 12. The protrusions 121 are arranged vertically, and heating resistors 122 are installed within the protrusions 121. Several temperature sensors are installed on the heat exchange tube 11. The temperature sensors are used to collect temperature detection signals from the outer wall of the heat exchange tube 11. The heating resistors 122 are controlled to open and close in response to the temperature detection signals. When the temperature sensor on the heat exchange tube 11 detects that the temperature on the heat exchange tube 11 is low, the temperature sensor transmits a temperature detection signal to the heating resistor 122. The heating resistor 122 starts working in response to the temperature detection signal. The heating resistor 122 heats the fin 12 and then transmits the temperature to the heat exchange tube 11, reducing the possibility of the heat exchange tube 11 being frozen.

[0032] Reference Figure 1 、 Figure 2 and Figure 3 The mounting frame 1 includes a bottom plate 3 and a top plate 2. A mounting groove 21 is provided on the inner bottom surface of the top plate 2. A mounting plate 4 is slidably installed in the mounting groove 21 along the length direction of the top plate 2. A horizontally arranged reciprocating screw 22 and a guide rod 23 are rotatably installed in the mounting groove 21. The mounting plate 4 is sleeved on the outer periphery of the guide rod 23 and the reciprocating screw 22, and the mounting plate 4 is threadedly engaged with the reciprocating screw 22. A drive motor 24 is installed on the top plate 2, and the output end of the drive motor 24 is coaxially fixedly connected to the end of the reciprocating screw 22. When the drive motor 24 is started, the drive motor 24 drives the reciprocating screw 22 to rotate, and the guide rod 23 provides a guiding effect on the mounting plate 4, so that the mounting plate 4 can drive the fan 42 to move back and forth along the length direction of the top plate 2.

[0033] Reference Figure 2 and Figure 3 The bottom surface of the mounting plate 4 is provided with a clearance groove 41, in which a fan 42 and several dust shields 43 are fixed. The dust shields 43 are located above the fan 42. A heating resistor wire 3 44 is installed between the fan 42 and the dust shield 43. The heating resistor wire 3 44 controls opening and closing in response to a temperature detection signal. The bottom surface of the mounting plate 4 can fit with the top surface of the fin 12. Two vertically arranged vertical plates 45 are installed on the bottom surface of the mounting plate 4. The sides of the vertical plates 45 fit with the sides of the fin 12. The bottom surface of the mounting plate 4 fits with the top surface of the fin 12, and the sides of the vertical plates 45 fit with the sides of the fin 12. The mounting plate 4 and the vertical plates 45 enclose the two sides of the fin 12 into a relatively closed space, so that the hot air gathers between the vertical plates 45 and the fin 12, so that the hot air can blow downwards the water droplets attached to the fin 12 and the outer wall of the heat exchange tube 11.

[0034] Reference Figure 1 and Figure 4 A heating resistor 32 is installed in the bottom plate 3. The heating resistor 32 is controlled to open and close in response to the temperature detection signal. A water collection tank 31 is provided in the bottom plate 3. Two sides of the bottom plate 3 are connected to the water collection tank 31 and connected to the water outlet pipe 33. A push plate 5 is installed in the water collection tank 31. The bottom end of the vertical plate 45 is fixedly connected to the push plate 5. The vertical plate 45 can drive the push plate 5 to move along the length of the bottom plate 3. During the movement of the push plate 5, the water in the water collection tank 31 is pushed toward the water outlet pipe 33, thereby accelerating the discharge of water from the water collection tank 31.

[0035] Reference Figure 4 and Figure 5 The push plate 5 includes a movable plate 51 with a movable groove 52 defined on its bottom surface. A scraper 53 is mounted on the movable plate 51 so that it slides vertically through the groove 52. The bottom of the scraper 53 is configured as a pointed tip. A first spring 54 is fixed to the top surface of the scraper 53, the top of which is fixedly connected to the inner top surface of the movable groove 52. An electromagnet 55 is embedded and fixed to the inner top surface of the movable groove 52. The electromagnet 55 controls opening and closing in response to a temperature detection signal. A magnet 56 is fixed to the top surface of the scraper 53. When energized, the electromagnet 55 repel the magnet 56. When the vertical plate 45 drives the push plate 5 along the length of the bottom plate 3, the electromagnet 55 is activated, repelling the magnet 56. Under the repulsive force of the electromagnet 55, the scraper 53 moves downward and contacts the inner bottom surface of the sump 31, allowing the scraper 53 to scrape away impurities adhering to the inner bottom surface of the sump 31.

[0036] Reference Figure 4 and Figure 5A horizontally arranged water absorption plate 57 is installed on the top of the push plate 5, and the top surface of the water absorption plate 57 is in contact with the bottom surface of the fin 12. Two squeezing rollers 6 are installed in the water collecting tank 31, and the squeezing roller 6 is located on one side of the bottom plate 3. The water absorption plate 57 can move between the two squeezing rollers 6. Sliding blocks 61 are respectively installed on both sides of the squeezing roller 6, and rotating rods 62 are respectively installed at both ends of the squeezing roller 6. The rotating rods 62 are rotatably connected to the sliding blocks 61. A sliding groove 34 is provided on the inner wall of the water collecting tank 31, and the sliding block 61 slides vertically with the bottom plate 3 through the sliding groove 34. The sliding block 61 includes a slider 1 611 and a slider 2 612. A second spring 66 is fixed to the bottom surface of the slider 2 612, and the end of the second spring 66 away from the slider 2 612 is fixedly connected to the inner wall of the sliding groove 34. A horizontally mounted drive rod 63 is mounted within the sump 31. Two connecting rods 64 are sleeved on each end of the drive rod 63 and are rotatably connected to the drive rod 63. The end of the connecting rod 64, distal from the drive rod 63, sleeves around the outer periphery of the rotating rod 62 and is rotatably connected to the rotating rod 62. A second magnet 65 is sleeved and fixed to the outer periphery of the drive rod 63. A third magnet 571 is secured to the side of the water absorption plate 57 near the squeeze roller 6, and the third magnet 571 and the second magnet 65 repel each other.

[0037] The pushing plate 5 drives the water absorption plate 57 to move between the two squeezing rollers 6, the magnetic block 3 571 and the magnetic block 2 65 repel each other, and the magnetic block 2 65 drives the driving rod 63 to move in the direction away from the water absorption plate 57. The driving rod 63 drives the two squeezing rollers 6 closer to each other through the connecting rod 64, so that the squeezing rollers 6 squeeze the water absorption plate 57.

[0038] The implementation principle of a surface cooler in an embodiment of the present application is as follows: a heating resistor wire 122 is provided on the fin 12, and a heating resistor wire 2 32 is provided in the water collecting tank 31. When the temperature sensor on the heat exchange tube 11 detects that the temperature on the heat exchange tube 11 is low, the temperature sensor transmits the temperature detection signal to the heating resistor wire 122 and the heating resistor wire 2 32. The heating resistor wire 122 and the heating resistor wire 2 32 start working after responding to the temperature detection signal. The heating resistor wire 122 heats the fin 12 and then transmits the temperature to the heat exchange tube 11, reducing the possibility of the heat exchange tube 11 being frozen. The heating resistor wire 2 32 heats the bottom plate 3 to facilitate the discharge of water in the water collecting tank 31.

[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A surface cooler, characterized in that: The invention comprises a mounting frame (1), wherein a heat exchange tube (11) and a fin (12) are mounted on the mounting frame (1), wherein a plurality of temperature sensors are mounted on the heat exchange tube (11), wherein the temperature sensors are used to collect temperature detection signals of the outer wall of the heat exchange tube (11), wherein a plurality of protrusions (121) are arranged on the side of the fin (12), wherein a heating resistance wire (122) is arranged in the protrusion (121), wherein the heating resistance wire (122) is controlled to open and close in response to the temperature detection signal, wherein the mounting frame (1) comprises a bottom plate (3) and a top plate (2), wherein a water collecting trough (31) is arranged in the bottom plate (3), wherein both sides of the bottom plate (3) are respectively connected to water outlet pipes (33) connected to the water collecting trough (31), wherein a heating resistance wire (2) (32) is mounted in the bottom plate (3), wherein the heating resistance wire (2) (32) is controlled to open and close in response to the temperature detection signal.

2. A surface cooler according to claim 1, characterized in that: The inner bottom surface of the top plate (2) is provided with a mounting groove (21), a mounting plate (4) is slidably mounted in the mounting groove (21) along the length direction of the top plate (2), a clearance groove (41) is provided on the bottom surface of the mounting plate (4), a fan (42) and a plurality of dust shields (43) are fixed in the clearance groove (41), the dust shields (43) are located above the fan (42), a heating resistance wire (44) is installed between the fan (42) and the dust shields (43), the heating resistance wire (44) is controlled to open and close in response to the temperature detection signal, and a driving component for driving the mounting plate (4) to move back and forth along the length direction of the top plate (2) is provided on the top plate (2).

3. A surface cooler according to claim 2, characterized in that: The driving assembly includes a reciprocating screw (22) rotatably mounted in the mounting groove (21), the mounting plate (4) is sleeved on the outer periphery of the reciprocating screw (22), the mounting plate (4) and the reciprocating screw (22) are threadedly matched, a guide rod (23) is fixed in the mounting groove (21), the guide rod (23) and the reciprocating screw (22) are arranged parallel to each other, the mounting plate (4) is sleeved on the outer periphery of the guide rod (23), a driving motor (24) is mounted on the top plate (2), and the output end of the driving motor (24) is coaxially fixedly connected to the end of the reciprocating screw (22).

4. A surface cooler according to claim 2, characterized in that: Two vertically arranged vertical plates (45) are installed on the bottom surface of the mounting plate (4), the side surfaces of the vertical plates (45) are in contact with the side surfaces of the fins (12), and the bottom surface of the mounting plate (4) can be in contact with the top surface of the fins (12).

5. The surface cooler according to claim 4, characterized in that: A push plate (5) is installed in the water collecting trough (31), the bottom end of the vertical plate (45) is fixedly connected to the push plate (5), and a horizontally arranged water absorption plate (57) is installed on the top of the push plate (5), the top surface of the water absorption plate (57) is in contact with the bottom surface of the fin (12), and an extrusion component for extruding the water absorption plate (57) is installed in the water collecting trough (31).

6. The surface cooler according to claim 5, characterized in that: The pushing plate (5) includes a moving plate (51), a moving groove (52) is provided on the bottom surface of the moving plate (51), and a scraper (53) is installed on the moving plate (51) through the moving groove (52) to slide vertically. The bottom of the scraper (53) is set as a tip. A first spring (54) is fixed on the top surface of the scraper (53), and the top of the first spring (54) is fixedly connected to the inner top surface of the moving groove (52). An electromagnet (55) is embedded and fixed on the inner top surface of the moving groove (52). The electromagnet (55) controls opening and closing in response to the temperature detection signal. A magnetic block (56) is fixed on the top surface of the scraper (53). When the electromagnet (55) is energized, it repel each other with the magnetic block (56).

7. The surface cooler according to claim 6, characterized in that: The squeezing assembly comprises two squeezing rollers (6), the squeezing rollers (6) are located on one side of the bottom plate (3), the water absorption plate (57) can be moved between the two squeezing rollers (6), and a pushing member for driving the two squeezing rollers (6) to approach each other vertically is provided on the bottom plate (3).

8. The surface cooler according to claim 7, characterized in that: Sliding blocks (61) are respectively installed on both sides of the squeezing roller (6), and rotating rods (62) are respectively installed on both ends of the squeezing roller (6). The rotating rods (62) are rotatably connected to the sliding blocks (61). The inner wall of the water collecting tank (31) is provided with a sliding groove (34). The sliding block (61) is slidably matched with the bottom plate (3) in the vertical direction through the sliding groove (34). The sliding block (61) includes a slider 1 (611) and a slider 2 (612). 12), a second spring (66) is fixed to the bottom surface of the second slider (612), and the end of the second spring (66) away from the second slider (612) is fixedly connected to the inner wall of the sliding groove (34), and the pushing member includes a horizontally arranged driving rod (63), and two connecting rods (64) are sleeved on both ends of the driving rod (63), and the end of the connecting rod (64) away from the driving rod (63) is sleeved on the outer periphery of the rotating rod (62).

9. The surface cooler according to claim 8, characterized in that: A second magnetic block (65) is fixedly mounted on the outer periphery of the driving rod (63), and a third magnetic block (571) is fixedly mounted on the side of the water absorbing plate (57) close to the squeezing roller (6), and the third magnetic block (571) and the second magnetic block (65) repel each other.

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