An indirect evaporative cooler

Abstract

The present invention relates to the technical field of indirect evaporative coolers, and specifically discloses an indirect evaporative cooler, including a heat exchanger and a spray water rack, wherein the bottom end of the heat exchanger is set as a secondary air inlet, the top end of the heat exchanger is set as a secondary air outlet, the rear end of the heat exchanger is set as a primary air inlet, and the front end of the heat exchanger is set as a primary air outlet, and the secondary air inlet is connected to the secondary air outlet, and the primary air inlet is connected to the primary air outlet. After condensed water is attached to the heat exchange plate, the humidity of the air discharged from the primary air outlet will increase, and the humidity in the dry channel is monitored by a humidity monitoring module. When the humidity reaches a preset value, the driving module drives the linkage module and the condensed water elimination module to move, so as to scrape off the condensed water attached to the heat exchange plate, and guide the scraped and left condensed water into the receiving box through the circulation slot through the inclined plate member, and discharge the collected water through the drainage pipe member.

Description

Technical Field

[0001] The invention belongs to the technical field of indirect evaporative coolers, and in particular relates to an indirect evaporative cooler. Background Art

[0002] The indirect evaporative cooler is essentially an air-to-air heat exchanger. The dry and wet channels are separated by the heat exchange plates in the heat exchanger. Due to the cooling effect of the wet channel on the dry channel, the temperature in the dry channel is reduced, thereby achieving a cooling effect. However, due to the lower temperature in the dry channel, when the outside air enters the dry channel, due to the temperature difference, the moisture contained in the outside air will condense on the heat exchange plates. The presence of condensed water will reduce the cooling effect of the dry channel in the heat exchanger, and the drying effect of the dry channel cannot be guaranteed. Summary of the invention

[0003] The object of the present invention is to provide an indirect evaporative cooler to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An indirect evaporative cooler comprises a heat exchanger and a spray water rack, wherein the bottom end of the heat exchanger is set as a secondary air inlet, the top end of the heat exchanger is set as a secondary air outlet, the rear end of the heat exchanger is set as a primary air inlet, the front end of the heat exchanger is set as a primary air outlet, and the secondary air inlet is connected to the secondary air outlet, the primary air inlet is connected to the primary air outlet, and the secondary air inlet, the secondary air outlet, the primary air inlet and the primary air outlet are all arranged at equal distances, the heat exchanger is symmetrically connected to a primary air guide cover at the top and bottom, and the heat exchanger is symmetrically connected to a secondary air guide cover at the front and back, the spray water rack is connected to the primary air guide cover at the upper end, and the spray water rack is located above the secondary air outlet;

[0006] A condensate elimination module is provided in the heat exchanger, and the condensate elimination module is located above the primary air inlet and the primary air outlet. The condensate elimination module includes a rear scraper plate and a front scraper plate. The rear scraper plate is provided at the primary air inlet, and the front scraper plate is provided at the primary air outlet. The rear scraper plate cooperates with the front scraper plate to scrape the condensate attached to the heat exchange plate.

[0007] The condensate elimination module is symmetrically connected to the linkage module front and back, and the linkage module includes a connecting strip plate, an annular strip tube and a connecting round rod. The connecting strip plates are symmetrically arranged on both sides of the heat exchanger front and back, the connecting strip plate located on the front side is connected to the middle of the front side of the front scraping plate, and the connecting strip plate located on the rear side is connected to the middle of the rear side of the rear scraping plate. The annular strip tube is respectively connected to the front end of the connecting strip plate located on the front side and the rear end of the connecting strip plate located on the rear side. The connecting round rod is slidably fitted in the annular strip tube to connect the condensate elimination module and the driving module. Since the connecting round rod is slidably fitted in the annular strip tube, when the annular strip tube and the connecting strip plate are lowered along with the connecting round rod, the front end of the front scraping plate will be lowered along with the connecting strip plate, so that the condensate elimination module is tilted;

[0008] The right end of the linkage module is connected to a driving module, which includes a lifting plate, a driving motor and a driving screw. The lifting plate is connected to the right end of the connecting round rod. The driving motor is connected to the bottom end of the secondary air guide cover through a positioning bolt. The driving screw is connected to the output end of the top of the driving motor, and the top of the driving screw passes through the secondary air guide cover and the lifting plate. The driving screw is threadedly connected to the lifting plate through an external thread. When the driving motor is turned on, it drives the driving screw to rotate, so that the lifting plate drives the connecting round rod to descend.

[0009] A position monitoring module is provided on the right side of the heat exchanger. The position monitoring module includes a primary contact switch, a secondary contact switch and a tertiary contact switch. The primary contact switch is located at the front end of the upper right side of the heat exchanger, the secondary contact switch is located at the front side of the lower right side of the heat exchanger, and the tertiary contact switch is located at the rear side of the lower right side of the heat exchanger.

[0010] The bottom end of the secondary air guide cover located on the front side is connected to a receiving module, and the receiving module includes a flow slot and a receiving box. The receiving box is arranged at the bottom end of the secondary air guide cover located on the front side. The flow slots are respectively opened in the middle of the bottom end of the secondary air guide cover located on the front side and the middle of the top end of the receiving box. The interior of the secondary air guide cover located on the front side is connected with the inner cavity of the receiving box through the flow slot. A humidity monitoring module is arranged in the secondary air guide cover located on the front side.

[0011] Preferably, the condensate elimination module further comprises a contraction notch, which is opened in the middle of the front side of the rear scraper plate, and the contraction notch passes through the rear scraper plate from left to right;

[0012] The rear end of the front scraper plate is slidably fitted in the shrinkage notch;

[0013] The rear side of the rear scraper plate is flush with the rear side of the heat exchanger;

[0014] The front side of the front scraper plate is flush with the front side of the heat exchanger;

[0015] The left and right sides of the front scraper plate and the left and right sides of the rear scraper plate are both in contact with the heat exchange plates in the heat exchanger;

[0016] Inclined panels are equidistantly arranged in the heat exchanger, and are located at the primary air inlet and the bottom of the primary air outlet respectively. The condensed water scraped off and left behind is guided to the receiving box through the flow slots by the inclined panels.

[0017] Preferably, the humidity monitoring module includes a transverse strip, an assembly plate, a circular plate and a humidity sensor. The circular plate is arranged in a secondary air guide hood located on the front side, the humidity sensor is connected to the rear side of the circular plate, the transverse strip is symmetrically connected to both sides of the circular plate, the assembly plate is symmetrically connected to both sides of the transverse strip, and the assembly plate is fitted with the inner wall of the secondary air guide hood located on the front side, and the assembly plate is fixedly connected to the secondary air guide hood by positioning bolts. After condensed water is attached to the heat exchange plate, the humidity of the air discharged from the primary air outlet will increase, and the humidity in the dry channel is detected by the humidity sensor, that is, the air in the dry channel is discharged from the primary air outlet, when the air contacts the humidity sensor and the humidity reaches a preset value, the humidity sensor transmits the data to the peripheral terminal, and the peripheral terminal receives the data and controls the drive motor located on the front side to start.

[0018] Preferably, the driving module also includes a stabilizing plate and a positioning plate. The stabilizing plate is symmetrically connected to the top right side of the heat exchanger front and back, and the lifting plate is below the stabilizing plate. The positioning plate is connected to the bottom end of the stabilizing plate, and the two groups of positioning plates are between the two groups of lifting plates. The positioning plate is fixedly connected to the heat exchanger through positioning bolts, and the top end of the driving screw is connected to the stabilizing plate bearing. The stabilizing plate, the positioning plate and the lifting plate are all in the secondary air guide cover to ensure the stability of the driving screw.

[0019] Preferably, the position monitoring module also includes a first-level equipment slot, which is opened at the front end of the upper right side of the heat exchanger, and the first-level contact switch is embedded in the first-level equipment slot. After the lifting plate located on the front side contacts the first-level contact switch, the first-level contact switch transmits a signal to the external terminal, and the external terminal receives the signal and controls the drive motor located on the rear side to start, driving the drive screw to rotate, so that the lifting plate located on the rear side descends, thereby cooperating with the linkage module located on the rear side to descend the rear end scraper plate. At this time, the angle between the front end scraper plate and the rear end scraper plate and the bottom surface of the heat exchanger dry channel is smaller than the angle between the top surface of the inclined plate and the bottom surface of the heat exchanger dry channel.

[0020] Preferably, the position monitoring module also includes a secondary equipment slot, which is opened on the front side of the lower right side of the heat exchanger, and the secondary contact switch is embedded in the secondary equipment slot. The lifting plate located on the front side contacts the secondary contact switch. At this time, the bottom surface of the rear scraper plate fits with the inclined surface of the inclined plate, and cooperates with the front scraper plate to scrape the condensed water attached to the heat exchange plate. When the lifting plate located on the front side contacts with the secondary contact switch, the secondary contact switch transmits a signal to the peripheral terminal, receives the signal through the peripheral terminal, and controls the two sets of drive motors to drive the drive screw to rotate in the opposite direction until the two sets of lifting plates fit with the stable plate and reset;

[0021] The secondary contact switch is located directly below the primary contact switch.

[0022] Preferably, the position monitoring module also includes a three-level equipment slot, which is opened on the lower rear side of the right side of the heat exchanger and is higher than the two-level equipment slot. The three-level contact switch is embedded in the three-level equipment slot, and the lifting plate located on the rear side contacts the three-level contact switch. The three-level contact switch transmits a signal to the external terminal, which controls the drive motor located on the rear side to be turned off through the external terminal, and the front scraper plate continues to descend until the lifting plate located on the front side contacts the two-level contact switch.

[0023] Preferably, the receiving module also includes a trapezoidal plate, a drainage pipe fitting and a control valve. The trapezoidal plate is connected to the bottom end of the receiving box, and the rear side of the trapezoidal plate is in contact with the heat exchanger. The trapezoidal plate is fixedly connected to the heat exchanger by positioning bolts. The drainage pipe fitting is symmetrically connected to the middle of the bottom end of both sides of the receiving box. The control valve is arranged on the drainage pipe fitting. The condensed water scraped off and left behind is guided into the receiving box through the circulation groove by the inclined plate member, and the control valve is opened to discharge the collected water through the drainage pipe fitting.

[0024] Compared with the prior art, the beneficial effect of the present invention is that when the present invention is in use, after condensed water is attached to the heat exchange plate, the humidity of the air discharged from the primary air outlet will increase, and the humidity in the dry channel is monitored by the humidity monitoring module. When the humidity reaches a preset value, the driving module drives the linkage module and the condensed water elimination module to move, thereby scraping off the condensed water attached to the heat exchange plate, and guiding the scraped and remaining condensed water into the receiving box through the circulation groove through the inclined plate member, and discharging the collected water through the drainage pipe fitting, thereby preventing the condensed water attached to the heat exchange plate from affecting the cooling effect of the dry channel in the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The figure is a schematic diagram of the overall structure of an indirect evaporative cooler.

[0026] Figure 2 The figure is a schematic diagram of the bottom structure of an indirect evaporative cooler.

[0027] Figure 3 A schematic diagram of a heat exchanger for an indirect evaporative cooler.

[0028] Figure 4 A schematic diagram of a condensate elimination module for an indirect evaporative cooler.

[0029] Figure 5 A schematic diagram of an inclined panel member of an indirect evaporative cooler.

[0030] Figure 6 A schematic diagram of a humidity monitoring module for an indirect evaporative cooler.

[0031] Figure 7 This is an enlarged schematic diagram of part A of an indirect evaporative cooler.

[0032] Figure 8 It is an enlarged schematic diagram of part B of an indirect evaporative cooler.

[0033] Fig. 9 This is an enlarged schematic diagram of part C of an indirect evaporative cooler.

[0034] In the figure: 1. heat exchanger; 2. spray water rack; 3. secondary air inlet; 4. secondary air outlet; 5. primary air inlet; 6. primary air outlet; 7. primary air guide hood; 8. secondary air guide hood; 9. condensate elimination module; 91. rear scraper plate; 92. contraction notch; 93. front scraper plate; 94. inclined plate; 10. linkage module; 101. connecting strip plate; 102. annular strip tube; 103. connecting round rod; 11. driving module; 111. stabilizing plate; 112. positioning plate; 113. lifting plate; 1 14. Driving motor; 115. Driving screw; 12. Position monitoring module; 121. Primary equipment slot; 122. Primary contact switch; 123. Secondary equipment slot; 124. Secondary contact switch; 125. Third-level equipment slot; 126. Third-level contact switch; 13. Adapter module; 131. Flow slot; 132. Adapter box; 133. Trapezoidal plate; 134. Drain pipe fittings; 135. Control valve; 14. Humidity monitoring module; 141. Horizontal strip; 142. Assembly plate; 143. Round plate; 144. Humidity sensor. DETAILED DESCRIPTION

[0035] See also Figure 1-Figure 9As shown, an indirect evaporative cooler comprises a heat exchanger 1 and a spray water rack 2, the bottom end of the heat exchanger 1 is set as a secondary air inlet 3, the top end of the heat exchanger 1 is set as a secondary air outlet 4, the rear end of the heat exchanger 1 is set as a primary air inlet 5, the front end of the heat exchanger 1 is set as a primary air outlet 6, and the secondary air inlet 3 is connected to the secondary air outlet 4, the primary air inlet 5 is connected to the primary air outlet 6, and the secondary air inlet 3, the secondary air outlet 4, the primary air inlet 5 and the primary air outlet 6 are all arranged at equal distances, the heat exchanger 1 is symmetrically connected to a primary air guide hood 7 from top to bottom, the heat exchanger 1 is symmetrically connected to a secondary air guide hood 8 from front to back, the spray water rack 2 is connected to the primary air guide hood 7 at the upper end, and the spray water rack 2 is located above the secondary air outlet 4;

[0036] A condensate elimination module 9 is provided in the heat exchanger 1, and the condensate elimination module 9 is located above the primary air inlet 5 and the primary air outlet 6. The condensate elimination module 9 includes a rear scraping plate 91 and a front scraping plate 93. The rear scraping plate 91 is provided at the primary air inlet 5, and the front scraping plate 93 is provided at the primary air outlet 6. The rear scraping plate 91 cooperates with the front scraping plate 93 to scrape the condensate attached to the heat exchange plate.

[0037] The condensate elimination module 9 is symmetrically connected to the linkage module 10 front and back. The linkage module 10 includes a connecting strip 101, an annular strip tube 102 and a connecting round rod 103. The connecting strip 101 is symmetrically arranged on both sides of the heat exchanger 1 front and back. The connecting strip 101 located on the front side is connected to the middle of the front side of the front scraping plate 93, and the connecting strip 101 located on the rear side is connected to the middle of the rear side of the rear scraping plate 91. The annular strip tube 102 is respectively connected to the front end of the connecting strip 101 located on the front side and the rear end of the connecting strip 101 located on the rear side. The connecting round rod 103 is slidably matched in the annular strip tube 102 to connect the condensate elimination module 9 and the driving module 11. Since the connecting round rod 103 is slidably matched in the annular strip tube 102, when the annular strip tube 102 and the connecting strip 101 are lowered along with the connecting round rod 103, the front end of the front scraping plate 93 will be lowered along with the connecting strip 101, so that the condensate elimination module 9 is tilted.

[0038] The right end of the linkage module 10 is connected to a driving module 11, and the driving module 11 includes a lifting plate 113, a driving motor 114 and a driving screw 115. The lifting plate 113 is connected to the right end of the connecting round rod 103, and the driving motor 114 is connected to the bottom end of the secondary air guide cover 8 through a positioning bolt. The driving screw 115 is connected to the output end of the top of the driving motor 114, and the top of the driving screw 115 passes through the secondary air guide cover 8 and the lifting plate 113, and the driving screw 115 is threadedly connected to the lifting plate 113 through an external thread. When the driving motor 114 is turned on, it drives the driving screw 115 to rotate, so that the lifting plate 113 drives the connecting round rod 103 to descend;

[0039] A position monitoring module 12 is provided on the right side of the heat exchanger 1. The position monitoring module 12 includes a primary contact switch 122, a secondary contact switch 124 and a tertiary contact switch 126. The primary contact switch 122 is located at the front end of the upper right side of the heat exchanger 1, the secondary contact switch 124 is located at the front side of the lower right side of the heat exchanger 1, and the tertiary contact switch 126 is located at the rear side of the lower right side of the heat exchanger 1.

[0040] The bottom end of the secondary air guide cover 8 located on the front side is connected to a receiving module 13, and the receiving module includes a flow slot 131 and a receiving box 132. The receiving box 132 is arranged at the bottom end of the secondary air guide cover 8 located on the front side. The flow slot 131 is respectively opened in the middle of the bottom end of the secondary air guide cover 8 located on the front side, and the middle of the top end of the receiving box 132. The interior of the secondary air guide cover 8 located on the front side is connected with the inner cavity of the receiving box 132 through the flow slot 131. A humidity monitoring module 14 is provided in the secondary air guide cover 8 located on the front side.

[0041] refer to Figure 4 and Figure 5 As shown, the condensate elimination module 9 further includes a contraction notch 92, which is opened in the middle of the front side of the rear scraping plate 91, and the contraction notch 92 passes through the rear scraping plate 91 from left to right;

[0042] The rear end of the front scraping plate 93 is slidably fitted in the shrinkage notch 92;

[0043] The rear side of the rear scraper plate 91 is flush with the rear side of the heat exchanger 1;

[0044] The front side of the front scraper plate 93 is flush with the front side of the heat exchanger 1;

[0045] The left and right sides of the front scraper plate 93 and the left and right sides of the rear scraper plate 91 are in contact with the heat exchange plates in the heat exchanger 1;

[0046] Inclined panels 94 are equidistantly arranged in the heat exchanger 1 , and are located at the bottom of the primary air inlet 5 and the primary air outlet 6 , respectively. The condensed water scraped off and left behind is guided to the receiving box 132 through the flow slot 131 by the inclined panel members 94 .

[0047] refer to Figure 1 , Figure 2 and Figure 6 As shown, the humidity monitoring module 14 includes a transverse strip 141, an assembly plate 142, a circular plate 143 and a humidity sensor 144. The circular plate 143 is arranged in the secondary air guide cover 8 located on the front side, and the humidity sensor 144 is connected to the rear side of the circular plate 143. The transverse strip 141 is symmetrically connected to both sides of the circular plate 143, and the assembly plate 142 is symmetrically connected to both sides of the transverse strip 141 up and down, and the assembly plate 142 is in contact with the inner wall of the secondary air guide cover 8 located on the front side, and the assembly plate 142 is fixedly connected to the secondary air guide cover 8 by positioning bolts. After condensed water is attached to the heat exchange plate, the humidity of the air discharged from the primary air outlet 6 will increase, and the humidity in the dry channel is detected by the humidity sensor 144, that is, the air in the dry channel is discharged from the primary air outlet 6, when there is air in contact with the humidity sensor 144, and the humidity reaches a preset value, the humidity sensor 144 transmits data to the external terminal, and the external terminal receives the data and controls the drive motor 114 located on the front side to turn on.

[0048] refer to Figure 2 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the driving module 11 also includes a stabilizing plate 111 and a positioning plate 112. The stabilizing plate 111 is symmetrically connected to the top right side of the heat exchanger 1 front and back, and the lifting plate 113 is below the stabilizing plate 111. The positioning plate 112 is connected to the bottom end of the stabilizing plate 111, and the two groups of positioning plates 112 are between the two groups of lifting plates 113. The positioning plate 112 is fixedly connected to the heat exchanger 1 through positioning bolts, and the top of the driving screw 115 is connected to the bearing of the stabilizing plate 111. The stabilizing plate 111, the positioning plate 112 and the lifting plate 113 are all in the secondary air guide cover 8 to ensure the stability of the driving screw 115.

[0049] refer to Figure 3 and Figure 7As shown, the position monitoring module 12 also includes a primary equipment slot 121, which is opened at the front end of the upper right side of the heat exchanger 1, and a primary contact switch 122 is embedded in the primary equipment slot 121. After the lifting plate 113 located on the front side contacts the primary contact switch 122, the primary contact switch 122 transmits a signal to the peripheral terminal, and the peripheral terminal receives the signal and controls the drive motor 114 located on the rear side to start, driving the drive screw 115 to rotate, so that the lifting plate 113 located on the rear side descends, thereby cooperating with the linkage module 10 located on the rear side to descend the rear scraper plate 91. At this time, the angle between the front scraper plate 93 and the rear scraper plate 91 and the bottom surface of the dry channel of the heat exchanger 1 is smaller than the angle between the top surface of the inclined plate 94 and the bottom surface of the dry channel of the heat exchanger 1.

[0050] refer to Figure 3 , Figure 5 and Figure 8 As shown, the position monitoring module 12 also includes a secondary equipment slot 123, which is opened at the front side of the lower right side of the heat exchanger 1, and the secondary contact switch 124 is embedded in the secondary equipment slot 123. The lifting plate 113 located at the front side contacts the secondary contact switch 124. At this time, the bottom surface of the rear scraping plate 91 fits with the inclined surface of the inclined plate 94, and cooperates with the front scraping plate 93 to scrape the condensed water attached to the heat exchange plate. When the lifting plate 113 located at the front side contacts with the secondary contact switch 124, the secondary contact switch 124 transmits a signal to the peripheral terminal, receives the signal through the peripheral terminal, and controls the two sets of drive motors 114 to drive the drive screw 115 to rotate in the opposite direction, until the two sets of lifting plates 113 are both fitted with the stable plate 111 and reset;

[0051] The secondary contact switch 124 is located directly below the primary contact switch 122 .

[0052] refer to Figure 3 and Fig. 9 As shown, the position monitoring module 12 also includes a tertiary equipment slot 125, which is opened at the lower rear side of the right side of the heat exchanger 1, and the tertiary equipment slot 125 is higher than the secondary equipment slot 123, and the tertiary contact switch 126 is embedded in the tertiary equipment slot 125, and the lifting plate 113 located on the rear side contacts the tertiary contact switch 126, and the tertiary contact switch 126 transmits a signal to the external terminal, and the external terminal controls the driving motor 114 located on the rear side to be turned off, and the front scraper plate 93 continues to descend until the lifting plate 113 located on the front side contacts the secondary contact switch 124.

[0053] refer to Figure 1 and Figure 2As shown, the receiving module 13 also includes a trapezoidal plate 133, a drainage pipe 134 and a control valve 135. The trapezoidal plate 133 is connected to the bottom end of the receiving box 132, and the rear side of the trapezoidal plate 133 is in contact with the heat exchanger 1. The trapezoidal plate 133 is fixedly connected to the heat exchanger 1 by positioning bolts. The drainage pipe 134 is symmetrically connected to the middle of the bottom ends of both sides of the receiving box 132. The control valve 135 is arranged on the drainage pipe 134. The condensed water scraped off and left behind is guided into the receiving box 132 through the circulation slot 131 by the inclined plate member 94, and the control valve 135 is opened to discharge the collected water through the drainage pipe 134.

[0054] Working principle: After condensed water adheres to the heat exchange plate, the humidity of the air discharged from the primary air outlet 6 will increase, and the humidity in the dry channel will be detected by the humidity sensor 144, that is, the air in the dry channel is discharged from the primary air outlet 6. When the air contacts the humidity sensor 144 and the humidity reaches a preset value, the humidity sensor 144 transmits the data to the external terminal, which receives the data and controls the drive motor 114 located on the front side to start, driving the drive screw 115 to rotate, so that the lifting plate 113 drives the connecting rod 103 to descend. Since the connecting rod 103 slides in the annular strip tube 102, the annular strip tube 102 When the connecting strip 101 descends with the connecting round rod 103, the front end of the front scraper plate 93 will descend with the connecting strip 101, so that the condensed water elimination module 9 is tilted. The tilted condensed water elimination module 9 has a better water guiding effect, and guides the condensed water to the front end. After the lifting plate 113 located at the front side contacts with the primary contact switch 122, the primary contact switch 122 transmits a signal to the peripheral terminal. The peripheral terminal receives the signal and controls the drive motor 114 located at the rear side to start, drive the drive screw 115 to rotate, and make the lifting plate 113 located at the rear side descend, thereby cooperating with the linkage module 10 located at the rear side to make the rear end scraper plate 91 descend. At this time, the angle between the front scraper plate 93 and the rear scraper plate 91 and the bottom surface of the dry channel of the heat exchanger 1 is smaller than the angle between the top surface of the inclined plate member 94 and the bottom surface of the dry channel of the heat exchanger 1, so the rear end of the bottom surface of the rear scraper plate 91 preferentially contacts the inclined plate member 94, which will form a blocking effect, making it difficult for condensed water to be squeezed out from the primary air inlet 5. At the same time, the lifting plate 113 located on the rear side contacts the three-level contact switch 126, and the three-level contact switch 126 transmits a signal to the external terminal, which controls the drive motor 114 located on the rear side to be turned off through the external terminal, and the front scraper plate 93 continues to descend until the lifting plate 113 located on the front side contacts the secondary contact switch 124. The scraper plate 91 at the rear end is in contact with the inclined surface of the inclined plate 94, and cooperates with the scraper plate 93 at the front end to scrape the condensed water attached to the heat exchange plate. The scraped and left condensed water is guided to the receiving box 132 through the flow slot 131 by the inclined plate 94, and the collected water is discharged through the drainage pipe 134. When the lifting plate 113 located on the front side contacts with the secondary contact switch 124, the secondary contact switch 124 transmits a signal to the external terminal, receives the signal through the external terminal, and controls the two sets of drive motors 114 to drive the drive screw 115 to rotate in the opposite direction, until the two sets of lifting plates 113 are in contact with the stabilizing plate 111 and reset.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An indirect evaporative cooler, comprising a heat exchanger (1) and a spray water rack (2), characterized in that: The bottom of the heat exchanger (1) is set as a secondary air inlet (3), the top of the heat exchanger (1) is set as a secondary air outlet (4), the rear end of the heat exchanger (1) is set as a primary air inlet (5), and the front end of the heat exchanger (1) is set as a primary air outlet (6), and the secondary air inlet (3) is connected to the secondary air outlet (4), the primary air inlet (5) is connected to the primary air outlet (6), and multiple secondary air inlet (3), secondary air outlet (4), primary air inlet (5) and primary air outlet (6) are arranged at equal distances, the heat exchanger (1) is symmetrically connected to a primary air guide hood (7) at the top and bottom, and the heat exchanger (1) is symmetrically connected to a secondary air guide hood (8) at the front and back, and the spray water rack (2) is connected to the first air guide hood (7) at the upper end, and the spray water rack (2) is located above the secondary air outlet (4); A condensate elimination module (9) is provided in the heat exchanger (1), and the condensate elimination module (9) is located above the primary air inlet (5) and the primary air outlet (6), and the condensate elimination module (9) comprises a rear scraper plate (91) and a front scraper plate (93), the rear scraper plate (91) is provided at the primary air inlet (5), and the front scraper plate (93) is provided at the primary air outlet (6); The condensate elimination module (9) is symmetrically connected to a linkage module (10) in front and back, the linkage module (10) comprising a connecting strip plate (101), an annular strip tube (102) and a connecting round rod (103), the connecting strip plates (101) are symmetrically arranged in front and back on both sides of the heat exchanger (1), the connecting strip plate (101) located on the front side is connected to the middle part of the front side of the front scraping plate (93), the connecting strip plate (101) located on the rear side is connected to the middle part of the rear side of the rear scraping plate (91), the annular strip tube (102) is respectively connected to the front end of the connecting strip plate (101) located on the front side and the rear end of the connecting strip plate (101) located on the rear side, and the connecting round rod (103) is slidably fitted in the annular strip tube (102); The right end of the linkage module (10) is connected to a driving module (11), the driving module (111) comprising a lifting plate (113), a driving motor (114) and a driving screw (115), the lifting plate (113) is connected to the right end of the connecting round rod (103), the driving motor (114) is connected to the bottom end of the secondary air guide cover (8) via a positioning bolt, the driving screw (115) is connected to the output end of the top of the driving motor (114), and the top end of the driving screw (115) passes through the secondary air guide cover (8) and the lifting plate (113), and the driving screw (115) is threadedly connected to the lifting plate (113) via an external thread; A position monitoring module (12) is provided on the right side of the heat exchanger (1), the position monitoring module (12) comprising a primary contact switch (122), a secondary contact switch (124) and a tertiary contact switch (126), the primary contact switch (122) being located at the front end of the upper right side of the heat exchanger (1), the secondary contact switch (124) being located at the front side of the lower right side of the heat exchanger (1), and the tertiary contact switch (126) being located at the rear side of the lower right side of the heat exchanger (1); The bottom end of the secondary air guide cover (8) located at the front side is connected to a receiving module (13), the receiving module comprising a flow slot (131) and a receiving box (132), the receiving box (132) being arranged at the bottom end of the secondary air guide cover (8) located at the front side, the flow slot (131) being respectively arranged at the middle of the bottom end of the secondary air guide cover (8) located at the front side and at the middle of the top end of the receiving box (132), and the interior of the secondary air guide cover (8) located at the front side is connected to the inner cavity of the receiving box (132) through the flow slot (131), and a humidity monitoring module (14) is arranged in the secondary air guide cover (8) located at the front side.

2. An indirect evaporative cooler according to claim 1, characterized in that: The condensate elimination module (9) further comprises a contraction notch (92), the contraction notch (92) being arranged in the middle of the front side of the rear end scraping plate (91), and the contraction notch (92) passing through the rear end scraping plate (91) from left to right; The rear end of the front scraping plate (93) is slidably fitted in the shrinkage notch (92); The rear side of the rear scraper plate (91) is flush with the rear side of the heat exchanger (1); The front side of the front scraper plate (93) is flush with the front side of the heat exchanger (1); The left and right sides of the front scraper plate (93) and the left and right sides of the rear scraper plate (91) are both in contact with the heat exchange plates in the heat exchanger (1); Inclined panel members (94) are arranged at equal intervals in the heat exchanger (1), and the inclined panel members (94) are respectively located at the bottom ends of the primary air inlet (5) and the primary air outlet (6).

3. The indirect evaporative cooler according to claim 1, characterized in that: The humidity monitoring module (14) comprises a transverse strip (141), an assembly plate (142), a circular plate (143) and a humidity sensor (144); the circular plate (143) is arranged in a secondary air guide cover (8) located at the front side; the humidity sensor (144) is connected to the rear side of the circular plate (143); the transverse strip (141) is symmetrically connected to both sides of the circular plate (143); the assembly plate (142) is symmetrically connected to both sides of the transverse strip (141); the assembly plate (142) is in contact with the inner wall of the secondary air guide cover (8) located at the front side; and the assembly plate (142) is fixedly connected to the secondary air guide cover (8) via positioning bolts.

4. The indirect evaporative cooler according to claim 1, characterized in that: The drive module (11) further comprises a stabilizing plate (111) and a positioning plate (112); the stabilizing plate (111) is symmetrically connected to the top of the right side of the heat exchanger (1) in front and back directions, and the lifting plate (113) is located below the stabilizing plate (111); the positioning plate (112) is connected to the bottom end of the stabilizing plate (111), and the two groups of positioning plates (112) are located between the two groups of lifting plates (113); the positioning plate (112) is fixedly connected to the heat exchanger (1) via positioning bolts; the top end of the driving screw (115) is connected to the bearing of the stabilizing plate (111); and the stabilizing plate (111), the positioning plate (112) and the lifting plate (113) are all located within the secondary air guide cover (8).

5. The indirect evaporative cooler according to claim 1, characterized in that: The position monitoring module (12) further comprises a first-level equipment slot (121), the first-level equipment slot (121) being disposed at the front end of the upper right side of the heat exchanger (1), and the first-level contact switch (122) being embedded in the first-level equipment slot (121).

6. An indirect evaporative cooler according to claim 5, characterized in that: The position monitoring module (12) further comprises a secondary equipment slot (123), the secondary equipment slot (123) being arranged at the lower front side of the right side of the heat exchanger (1), and the secondary contact switch (124) being embedded in the secondary equipment slot (123); The secondary contact switch (124) is located directly below the primary contact switch (122).

7. An indirect evaporative cooler according to claim 6, characterized in that: The position monitoring module (12) further comprises a third-level equipment slot (125), the third-level equipment slot (125) being arranged at the lower rear side of the right side of the heat exchanger (1), and the third-level equipment slot (125) being higher than the second-level equipment slot (123), and the third-level contact switch (126) being embedded in the third-level equipment slot (125).

8. The indirect evaporative cooler according to claim 1, characterized in that: The receiving module (13) further comprises a trapezoidal plate (133), a drainage pipe (134) and a control valve (135); the trapezoidal plate (133) is connected to the bottom end of the receiving box (132), and the rear side of the trapezoidal plate (133) is in contact with the heat exchanger (1); the trapezoidal plate (133) is fixedly connected to the heat exchanger (1) via positioning bolts; the drainage pipe (134) is symmetrically connected to the middle of the bottom ends of both sides of the receiving box (132); and the control valve (135) is arranged on the drainage pipe (134).

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