Evaporation and condensation dual-purpose heat exchanger

Abstract

The evaporation and condensation dual-purpose heat exchanger comprises a shell, an axial flow fan, a shell door, a compressor, a heat exchanger body, a throttling device, a connecting pipe, a shell and a coil pipe are arranged on the shell, a cold water tank is fixedly connected to the outer portion of the shell, a water outlet pipe is arranged on the cold water tank, and a treatment tank is arranged on the water outlet pipe; a driven shaft, a side plate, a moving groove, a mounting plate, a first spring, a first telescopic rod, a cleaning brush and a blow-off pipe are arranged in the treatment tank, a moving column, a through groove, a blocking circle, a sealing gasket, a second telescopic rod and a second spring are arranged in the blow-off pipe, and a pull rod is fixedly connected to the bottom of the blocking circle. By means of the device, impurities are pushed to the blow-off pipe through impact force of water, part of the impurities are discharged through the through groove, and the impurities detained in the blow-off pipe drive the blocking circle and the moving column to move by pulling the pull rod and finally enter the collecting box, so that the impurities are prevented from blocking the blow-off pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to an evaporative and condensing dual-purpose heat exchanger. Background Art

[0002] A heat exchanger, also known as a heat exchanger, is widely used in industrial refrigeration, HVAC, food refrigeration and other fields. It occupies a large area and has high energy efficiency.

[0003] In the existing heat exchanger technology, a single filtering device is mostly used for filtration. However, in the long-term operation process, the outer surface of the coil of the heat exchanger is prone to fouling, which affects the heat exchange effect. For example, the Chinese patent discloses "an evaporative and condensing dual-purpose heat exchanger" with the application number "CN201810344101.9". One end of the connecting hose away from the water pump penetrates through the wastewater treatment tank and extends to the outside of the wastewater treatment tank, which can effectively reduce the impurities entering the inner cavity of the heat exchanger, avoid the blockage of the inner cavity of the heat exchanger, and greatly improve the filtering effect of the device, increase the service life of the heat exchanger, and has strong practicability, making the device have a good impurity removal function. However, the impurities after cleaning are extremely easy to stay in the pipeline. It is difficult to flush them down only by the impact of water flow, and the pipeline may be blocked for a long time. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and provide an evaporative and condensing dual-purpose heat exchanger. The water in the cold water tank enters the treatment tank, and the impurities are intercepted and retained by the filter plate. Under the action of the cleaning brush, the impurities are brushed off. The first spring ensures that the cleaning brush is closely attached to the filter plate to improve the cleaning effect. The impact of the water flow flushes the impurities towards the sewage pipe. Under the action of the self-elastic force of the second spring, the blocking circle is pushed away from the through groove, so that the impurities can pass through the through groove smoothly. Pull the pull rod to make the blocking circle retract into the through groove and fit the moving column, and then pull again to further drive the moving column to move, thereby pushing the impurities into the collection box to prevent them from staying in the sewage pipe and ensuring the system cleanliness and heat exchange efficiency.

[0005] The present invention also provides an evaporative and condensing dual-purpose heat exchanger having the above-described one, including: a housing, an axial flow fan is provided at the top of the housing, a housing door is provided on the housing, a compressor, a heat exchanger body and a throttling device are fixedly connected inside the housing, connection pipes are provided on both sides of the heat exchanger body, an outer shell is provided at the top of the heat exchanger body, and a coil pipe is provided inside the outer shell; a cold water tank is fixedly connected to the outside of the housing, a water outlet pipe is provided on the cold water tank, a treatment tank is provided on the water outlet pipe, a slave shaft is provided inside the treatment tank, side plates are fixedly connected to the outside of the slave shaft, a moving groove is provided inside the side plates, a mounting plate is slidably connected inside the moving groove, a first spring and a first telescopic rod are provided at the top of the mounting plate, a cleaning brush is provided at the bottom of the mounting plate, a sewage discharge pipe is fixedly connected to the side of the treatment tank, a moving column is movably connected inside the sewage discharge pipe, a through groove is provided inside the moving column, a blocking circle is slidably connected inside the through groove, a sealing gasket is provided outside the blocking circle, a second telescopic rod and a second spring are provided at the bottom of the blocking circle, and a pull rod is fixedly connected to the bottom of the blocking circle. Through the above device, impurities are pushed towards the sewage discharge pipe by the impact force of water, part of the impurities are discharged through the through groove, and the impurities remaining in the sewage discharge pipe are driven to move the blocking circle and the moving column by pulling the pull rod, and finally enter the collection box, avoiding the blockage of the sewage discharge pipe by impurities.

[0006] According to an evaporative and condensing dual-purpose heat exchanger provided by the present invention, a housing door is provided on the front of the housing, louvers are provided on both sides of the housing, and a dust-proof net is provided at the top of the axial flow fan. Through the above device, equipment maintenance is facilitated through the housing door, air circulation is ensured by the louvers, and dust is prevented from entering by the dust-proof net, improving the service life of the equipment.

[0007] According to an evaporative and condensing dual-purpose heat exchanger provided by the present invention, the number of the connection pipes is two, the other end of one connection pipe is fixedly connected to the compressor, and the other end of the other connection pipe is fixedly connected to the throttling device. Through the above device, the stability of the refrigerant flow is ensured by the double connection pipes, the efficient switching of the evaporation and condensation processes is realized, and the heat exchange effect is improved.

[0008] According to an evaporative and condensing dual-purpose heat exchanger provided by the present invention, a partition plate is fixedly connected inside the outer shell, and the partition plate is located directly below the coil pipe. Through the above device, the air flow path is separated by the partition plate, the heat exchange efficiency is improved, and the influence of condensed water dripping on the equipment operation is prevented.

[0009] According to a combined evaporation and condensation heat exchanger provided by the present invention, a motor is fixedly connected to the outside of the housing. The output end of the motor is rotationally connected to a main shaft. The other end of the main shaft is fixedly connected to a first bevel gear. The outside of the first bevel gear is meshed with a second bevel gear. A secondary shaft is fixedly connected to the lower surface of the second bevel gear, and the secondary shaft penetrates through the filter plate. Through the above device, the filter device is automatically operated by the motor, improving the impurity filtration efficiency and reducing the manual cleaning work.

[0010] According to a combined evaporation and condensation heat exchanger provided by the present invention, the side plates are located on the upper and lower sides of the filter plate. The first spring is located outside the first telescopic rod. The first spring and the other end of the first telescopic rod are in contact with the moving groove, and the cleaning brush is in contact with the filter plate. Through the above device, the cleaning brush is ensured to always be in contact with the filter plate by the first spring structure, improving the cleaning effect and preventing impurity accumulation from affecting the heat exchange performance.

[0011] According to a combined evaporation and condensation heat exchanger provided by the present invention, a water pump is fixedly connected to the upper surface of the outer shell. The water pump is fixedly connected to a water outlet pipe. The output end of the water pump is fixedly connected to a spray head. The spray head is located at the inner top of the outer shell and directly above the coil pipe. A drain pipe is provided on the side of the outer shell, and the other end of the drain pipe is detachably connected to a waste water tank. Through the above device, the heat exchange effect is strengthened by spraying cooling water with the spray head, the drain pipe ensures the smooth discharge of condensed water, and the waste water tank collects waste water to prevent environmental pollution.

[0012] According to a combined evaporation and condensation heat exchanger provided by the present invention, a diversion groove is provided on the sewage discharge pipe. The diversion groove is in contact with the upper surface of the filter plate. The other end of the sewage discharge pipe is detachably connected to a collection box. A pull rod penetrates through the sewage discharge pipe, and a handle is provided at the other end of the pull rod. The second telescopic rod is located inside the second spring, and the second telescopic rod and the other end of the second spring are connected to the through groove. Through the above device, impurities are guided into the sewage discharge pipe through the diversion groove, and the cooperation of the pull rod and the collection box facilitates cleaning, improving the sewage discharge efficiency and preventing blockage from affecting the operation of the equipment.

[0013] Compared with the prior art, in this combined evaporation and condensation heat exchanger, the water in the cold water tank enters the treatment tank, and impurities are intercepted and retained by the filter plate. Under the action of the cleaning brush, the impurities are brushed off. The first spring ensures that the cleaning brush is closely attached to the filter plate, improving the cleaning effect. The impact of the water flow flushes the impurities towards the sewage discharge pipe. Under the action of the self-elastic force of the second spring, the blocking circle is pushed away from the through groove, enabling the impurities to pass through the through groove smoothly. Pulling the pull rod makes the blocking circle retract into the through groove and fit against the moving column, and then pulling again further drives the moving column to move, thereby pushing the impurities into the collection box to prevent them from remaining in the sewage discharge pipe and ensuring the cleanliness of the system and the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the drawings and embodiments;

[0015] Figure 1 It is a structural diagram of the evaporative and condensing dual-purpose heat exchanger of the present invention;

[0016] Figure 2 It is the Figure 1 internal structural diagram of the evaporative and condensing dual-purpose heat exchanger of the present invention;

[0017] Figure 3 It is the Figure 1 left side sectional view of the evaporative and condensing dual-purpose heat exchanger of the present invention;

[0018] Figure 4 It is the Figure 2 enlarged view at position A in the evaporative and condensing dual-purpose heat exchanger of the present invention;

[0019] Figure 5 It is the Figure 3 enlarged view at position B in the evaporative and condensing dual-purpose heat exchanger of the present invention;

[0020] Figure 6 It is the Figure 3 enlarged view at position C in the evaporative and condensing dual-purpose heat exchanger of the present invention.

[0021] Legend:

[0022] 1. Shell; 2. Dust-proof net; 3. Axial flow fan; 4. Shell door; 5. Louver; 6. Compressor; 7. Heat exchanger body; 8. Connecting pipe; 9. Throttling device; 10. Partition board; 11. Coil pipe; 12. Outer shell; 13. Cold water tank; 14. Water outlet pipe; 15. Treatment tank; 16. Filter plate; 17. Motor; 18. Main shaft; 19. First bevel gear; 20. Second bevel gear; 21. Driven shaft; 22. Side plate; 23. Moving groove; 24. First spring; 25. First telescopic rod; 26. Mounting plate; 27. Cleaning brush; 28. Water pump; 29. Sprinkler head; 30. Sewage discharge pipe; 31. Flow guide groove; 32. Moving column; 33. Through groove; 34. Blocking circle; 35. Sealing gasket; 36. Second telescopic rod; 37. Second spring; 38. Pull rod; 39. Handle; 40. Collection box; 41. Drain pipe; 42. Waste water tank. Detailed implementation manners

[0023] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0024] Refer to Figure 1 、 Figure 2 and Figure 3, an evaporation and condensation dual-purpose heat exchanger according to an embodiment of the present invention includes: a housing 1, an axial flow fan 3 is provided at the top of the housing 1, a housing door 4 is provided on the housing 1, the housing door 4 is provided on the front of the housing 1, louver windows 5 are provided on both sides of the housing 1, a dust-proof net 2 is provided at the top of the axial flow fan 3, a compressor 6, a heat exchanger body 7 and a throttling device 9 are fixedly connected inside the housing 1, connection pipes 8 are provided on both sides of the heat exchanger body 7, the number of the connection pipes 8 is two, the other end of one connection pipe 8 is fixedly connected to the compressor 6, and the other end of the other connection pipe 8 is fixedly connected to the throttling device 9. An outer shell 12 is provided at the top of the heat exchanger body 7, a coil pipe 11 is provided inside the outer shell 12, and a partition 10 is fixedly connected inside the outer shell 12. The partition 10 is located directly below the coil pipe 11;

[0025] Specifically, during the heat exchange process, the axial flow fan 3 provides air flow, and the louver windows 5 ensure air circulation. The low-temperature and low-pressure liquid refrigerant enters the coil pipe 11 in the heat exchanger body 7 through the throttling device 9. The nozzle 29 can spray cooling water onto the surface of the coil pipe 11. The heat is transferred to the refrigerant, causing it to absorb heat and evaporate into a low-temperature and low-pressure gas. The evaporated low-temperature refrigerant gas is sucked into the compressor 6 and enters the next compression cycle. The heat exchanger 7 completes the heat absorption and refrigeration process. The high-temperature and high-pressure refrigerant gas of the compressor 6 enters the coil pipe 11 of the heat exchanger 7. Similarly, the nozzle 29 can spray cooling water onto the surface of the coil pipe 11. The heat is transferred to the refrigerant, gradually cooling and condensing into a high-pressure liquid refrigerant. The condensed high-pressure liquid enters the throttling device 9 to complete the heat exchange cycle. The compressor 6 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure state through mechanical work. Its structure mainly includes a motor, a piston or scroll assembly, and an exhaust valve; the core structure of the heat exchanger body 7 is the coil pipe 11, and heat exchange is carried out between the fluids inside and outside the coil pipe 11 to achieve the evaporation heat absorption or condensation heat release of the refrigerant; the throttling device 9 reduces the cross-sectional area of the channel, reduces the pressure and temperature of the refrigerant, and changes it from a high-pressure liquid to a low-pressure liquid to create conditions for the evaporation process. Its structure is usually an expansion valve or a capillary tube.

[0026] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, a cold water tank 13 is fixedly connected to the outside of the housing 1. A water outlet pipe 14 is provided on the cold water tank 13. A treatment tank 15 is provided on the water outlet pipe 14. A secondary shaft 21 is arranged inside the treatment tank 15. A motor 17 is fixedly connected to the outside of the housing 1. The output end of the motor 17 is rotationally connected to a main shaft 18. The other end of the main shaft 18 is fixedly connected to a first bevel gear 19. The outside of the first bevel gear 19 is meshed with a second bevel gear 20. The secondary shaft 21 is fixedly connected to the lower surface of the second bevel gear 20. The secondary shaft 21 penetrates through the filter plate 16. A side plate 22 is fixedly connected to the outside of the secondary shaft 21. A moving groove 23 is arranged inside the side plate 22. A mounting plate 26 is slidably connected inside the moving groove 23. A first spring 24 and a first telescopic rod 25 are arranged at the top of the mounting plate 26. A cleaning brush 27 is arranged at the bottom of the mounting plate 26. The side plate 22 is located on the upper and lower sides of the filter plate 16. The first spring 24 is located outside the first telescopic rod 25. The other ends of the first spring 24 and the first telescopic rod 25 are in contact with the moving groove 23. The cleaning brush 27 is in contact with the filter plate 16. A water pump 28 is fixedly connected to the upper surface of the outer shell 12. The water pump 28 is fixedly connected to the water outlet pipe 14. The output end of the water pump 28 is fixedly connected to a spray head 29. The spray head 29 is located at the inner top of the outer shell 12. The spray head 29 is directly above the coil pipe 11. A drain pipe 41 is arranged on the side of the outer shell 12. The other end of the drain pipe 41 is detachably connected to a waste water tank 42. A sewage discharge pipe 30 is fixedly connected to the side of the treatment tank 15. A moving column 32 is movably connected inside the sewage discharge pipe 30. A through groove 33 is arranged inside the moving column 32. A blocking circle 34 is slidably connected inside the through groove 33. A sealing gasket 35 is arranged outside the blocking circle 34. A second telescopic rod 36 and a second spring 37 are arranged at the bottom of the blocking circle 34. A pull rod 38 is fixedly connected to the bottom of the blocking circle 34. A diversion groove 31 is arranged on the sewage discharge pipe 30. The diversion groove 31 is in contact with the upper surface of the filter plate 16. The other end of the sewage discharge pipe 30 is detachably connected to a collection box 40. The pull rod 38 penetrates through the sewage discharge pipe 30. A handle 39 is arranged at the other end of the pull rod 38. The second telescopic rod 36 is located inside the second spring 37. The other ends of the second telescopic rod 36 and the second spring 37 are connected to the through groove 33;

[0027] Specifically, the drain pipe 41 discharges the wastewater into the wastewater tank 42 to ensure the stable operation of the system. The water in the cold water tank 13 enters the treatment tank 15 through the water outlet pipe 14. After being filtered by the filter plate 16, the impurities remain on the surface of the filter plate 16. Under the action of the cleaning brush 27, the impurities on the filter plate 16 are cleaned. At the same time, the spring 24 provides pressure to make the cleaning brush 27 closely fit with the filter plate 16, improving the cleaning effect. The cleaned impurities enter the sewage pipe 30 under the impact of the water flow. Under the action of the self-elastic force of the second spring 37, the blocking circle 34 is pushed away from the through groove 33, enabling the impurities to pass through the through groove 33 smoothly. The impurities may remain inside the sewage pipe 30. At this time, by pulling the pull rod 38, the blocking circle 34 is retracted into the through groove 33 and fits with the moving column 32. By pulling the pull rod 38 again, the moving column 32 drives the impurities to move to the collection box 40, preventing the impurities from accumulating in the sewage pipe 30 and affecting the heat exchange efficiency.

[0028] Working principle: During the heat exchange process, the axial flow fan 3 provides air flow, and the shutter 5 ensures air circulation. The low-temperature and low-pressure liquid refrigerant enters the coil 11 in the heat exchanger body 7 through the throttling device 9. The nozzle 29 can spray cooling water onto the surface of the coil 11. The heat is transferred to the refrigerant, causing it to absorb heat and evaporate into a low-temperature and low-pressure gas. The evaporated low-temperature refrigerant gas is sucked into the compressor 6 and enters the next compression cycle. The heat exchanger 7 completes the heat absorption and refrigeration process. The high-temperature and high-pressure refrigerant gas from the compressor 6 enters the coil 11 of the heat exchanger 7. Similarly, the nozzle 29 can spray cooling water onto the surface of the coil 11. The heat is transferred to the refrigerant, which gradually cools and condenses into a high-pressure liquid refrigerant. The condensed high-pressure liquid enters the throttling device 9 to complete the heat exchange cycle. The drain pipe 41 discharges the wastewater into the wastewater tank 42 to ensure the stable operation of the system. The water in the cold water tank 13 enters the treatment tank 15 through the water outlet pipe 14. After being filtered by the filter plate 16, the impurities remain on the surface of the filter plate 16. Under the action of the cleaning brush 27, the impurities on the filter plate 16 are cleaned. At the same time, the spring 24 provides pressure to make the cleaning brush 27 closely fit with the filter plate 16, improving the cleaning effect. The cleaned impurities enter the sewage pipe 30 under the impact of the water flow. Under the action of the self-elastic force of the second spring 37, the blocking circle 34 is pushed away from the through groove 33, enabling the impurities to pass through the through groove 33 smoothly. The impurities may remain inside the sewage pipe 30. At this time, by pulling the pull rod 38, the blocking circle 34 is retracted into the through groove 33 and fits with the moving column 32. By pulling the pull rod 38 again, the moving column 32 drives the impurities to move to the collection box 40, preventing the impurities from accumulating in the sewage pipe 30 and affecting the heat exchange efficiency.

[0029] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. An evaporative and condensing dual-purpose heat exchanger, characterized in that, Comprising: A housing (1), on the top of the housing (1) there is an axial flow fan (3), on the housing (1) there is a housing door (4), inside the housing (1) there are fixedly connected a compressor (6), a heat exchanger body (7) and a throttling device (9), on both sides of the heat exchanger body (7) there are connecting pipes (8), on the top of the heat exchanger body (7) there is a housing (12), inside the housing (12) there is a coil pipe (11); Outside the housing (1) there is fixedly connected a cold water tank (13), on the cold water tank (13) there is a water outlet pipe (14), on the water outlet pipe (14) there is a treatment tank (15), inside the treatment tank (15) there is a secondary shaft (21), outside the secondary shaft (21) there is fixedly connected a side plate (22), inside the side plate (22) there is a moving groove (23), inside the moving groove (23) there is slidably connected a mounting plate (26), on the top of the mounting plate (26) there is a first spring (24) and a first telescopic rod (25), on the bottom of the mounting plate (26) there is a cleaning brush (27), on the side of the treatment tank (15) there is fixedly connected a sewage discharge pipe (30), inside the sewage discharge pipe (30) there is movably connected a moving column (32), inside the moving column (32) there is a through groove (33), inside the through groove (33) there is slidably connected a retaining circle (34), outside the retaining circle (34) there is a sealing gasket (35), on the bottom of the retaining circle (34) there is a second telescopic rod (36) and a second spring (37), on the bottom of the retaining circle (34) there is fixedly connected a pull rod (38).

2. The evaporative and condensing dual-purpose heat exchanger according to claim 1, wherein On the front of the housing (1) there is a housing door (4), on both sides of the housing (1) there are louvers (5), on the top of the axial flow fan (3) there is a dust-proof net (2).

3. The evaporative and condensing dual-purpose heat exchanger according to claim 1, characterized in that, The number of the connecting pipes (8) is two, the other end of one connecting pipe (8) is fixedly connected to the compressor (6), and the other end of the other connecting pipe (8) is fixedly connected to the throttling device (9).

4. The evaporative and condensing dual-purpose heat exchanger according to claim 1, characterized in that Inside the housing (12) there is fixedly connected a partition plate (10), and the partition plate (10) is located directly below the coil pipe (11).

5. The evaporative and condensing dual-purpose heat exchanger according to claim 1, wherein, Outside the housing (1) there is fixedly connected a motor (17), the output end of the motor (17) is rotationally connected to a main shaft (18), the other end of the main shaft (18) is fixedly connected to a first bevel gear (19), outside the first bevel gear (19) there is meshingly connected a second bevel gear (20), the secondary shaft (21) is fixedly connected to the lower surface of the second bevel gear (20), and the secondary shaft (21) penetrates through a filter plate (16).

6. The evaporative and condensing dual-purpose heat exchanger according to claim 1, characterized in that, The side plates (22) are located on the upper and lower sides of the filter plate (16), the first spring (24) is located outside the first telescopic rod (25), the other ends of the first spring (24) and the first telescopic rod (25) are in contact with the moving groove (23), and the cleaning brush (27) is in contact with the filter plate (16).

7. The evaporative and condensing dual-purpose heat exchanger according to claim 1, wherein, A water pump (28) is fixedly connected to the upper surface of the outer shell (12). The water pump (28) is fixedly connected to a water outlet pipe (14). A spray head (29) is fixedly connected to the output end of the water pump (28). The spray head (29) is located at the inner top of the outer shell (12). The spray head (29) is located directly above the coil pipe (11). A drain pipe (41) is arranged on the side of the outer shell (12). The other end of the drain pipe (41) is detachably connected to a waste water tank (42).

8. The evaporative and condensing dual-purpose heat exchanger according to claim 1, wherein A diversion groove (31) is arranged on the sewage discharge pipe (30). The diversion groove (31) is attached to the upper surface of the filter plate (16). The other end of the sewage discharge pipe (30) is detachably connected to a collection box (40). The pull rod (38) penetrates through the sewage discharge pipe (30). A handle (39) is arranged at the other end of the pull rod (38). The second telescopic rod (36) is located inside the second spring (37). The second telescopic rod (36) and the other end of the second spring (37) are connected to the through groove (33).

Images