Open-loop multi-stage circulating cooling and rewarming heat exchanger assembly
By designing a heat exchanger with integrated multi-stage cooling and re-temperature functions, the problem of difficult integration between equipment in the prior art is solved, and the effects of reducing land, neat appearance, reasonable structure, energy saving and emission reduction and long service life are achieved.
Patent Information
- Application Number
- CN202420620215.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-28
AI Technical Summary
In the prior art, gas and gas heat exchangers and gas-liquid heat exchangers are difficult to assemble and integrate into one device due to their large differences in structural forms and working principles, resulting in many connections between the equipment, long construction periods, large footprints, and poor appearance consistency.
An open-loop multi-stage cyclic cooling and re-temperature heat exchanger integration is designed, using a shell made of all stainless steel, integrating first-level, second-level, third-level coolers, re-heaters, exhaust gas processors and other components. The tight connection between the components is achieved through the connecting pipe and the connecting shell, reducing the connection parts between the equipment.
It has achieved the effect of reducing the floor size, neat appearance, reasonable structure, strong operability, energy conservation and emission reduction, ensuring stable operation of the system temperature and long service life.
Smart Images
Figure CN222670792U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of heat exchangers, in particular to an open-loop multi-stage circulation cooling and rewarming heat exchanger integration. Background Art
[0002] The exhaust temperature of the coating machine is relatively high and contains a certain concentration of NMP. The existing technology uses an air-to-air heat exchanger to cool the exhaust air in one stage and reheat the return air at the same time. The cooled exhaust air continues to be condensed in two stages by chilled water and cooling water, and then about 90% of the exhaust air returns to the air-to-air heat exchanger as return air. The air-to-air heat exchanger is a plate-fin or heat pipe heat exchanger with a large size; the two-stage condenser of chilled water and cooling water is a shell-and-tube gas-liquid heat exchanger.
[0003] The existing technology uses a combination of an air-to-air heat exchanger + an air-to-liquid heat exchanger to achieve three-stage condensation and rewarming. Due to the large differences in the structural form and working principle of the air-to-air heat exchanger and the air-to-liquid heat exchanger, it is difficult to assemble and integrate them into a skid. They can only be designed and manufactured separately. There are many connecting parts between the equipment, the construction period is long, and the area occupied is large, and the appearance consistency is poor.
[0004] Therefore, an open-loop multi-stage circulation cooling and rewarming heat exchanger integration has been developed that can reduce the footprint, has a neat appearance, a reasonable structure, strong operability, energy conservation and emission reduction, ensures stable system temperature operation, and has a long service life. Utility Model Content
[0005] In order to overcome the shortcomings that the gas-to-gas heat exchanger and the gas-to-liquid heat exchanger have large differences in structural forms and working principles, are difficult to assemble and integrate into a skid, can only be designed and manufactured separately, have many connecting parts between equipment, a long construction period, occupy a large area, and have poor appearance consistency, the utility model provides an open-loop multi-stage circulation cooling and rewarming heat exchanger integration that can reduce the footprint, has a neat appearance, a reasonable structure, strong operability, energy conservation and emission reduction, ensures stable system temperature operation, and has a long service life.
[0006] The technical solution is: an open-loop multi-stage circulation cooling and rewarming heat exchanger integration, including an outer shell, a fixed inspection cover, an air intake fan and a protective net. A fixed inspection cover is clamped on the upper side of the outer shell, and two upper and lower air intake fans are connected to the right side of the outer shell. Protective nets are connected to the air intake fans.
[0007] Furthermore, it also includes a connecting pipe, a connecting shell, a liquid accumulation drain pipe, a first liquid inlet pipe and a liquid outlet pipe. The inner sides of the left and right parts of the outer shell are connected to connecting pipes, the air intake fans are clamped with the right connecting pipe, a connecting shell is connected between the connecting pipes, a liquid accumulation drain pipe is connected to the lower side of the connecting shell, the liquid accumulation drain pipe is connected to the outer shell, the lower part of the connecting shell is connected to the first liquid inlet pipe, the first liquid inlet pipe is connected to the outer shell, the left part of the connecting shell is connected to the liquid outlet pipe, the liquid outlet pipe is connected to the outer shell, and the first liquid inlet pipe is connected to the liquid outlet pipe.
[0008] Furthermore, it also includes a primary cooler, a secondary cooler, a tertiary cooler and a second liquid inlet pipe. The primary cooler is connected to the right part of the connecting shell, the secondary cooler is connected to the right part of the connecting shell, the secondary cooler is located on the left part of the primary cooler, the middle part of the connecting shell is connected to the tertiary cooler, the front side of the middle part of the connecting shell is connected to the second liquid inlet pipe, the second liquid inlet pipe is in contact with the tertiary cooler, the second liquid inlet pipe is connected to the liquid outlet pipe, and the second liquid inlet pipe is connected to the outer shell.
[0009] Furthermore, it also includes an exhaust gas processor and an exhaust pipe. The exhaust gas processor is connected to the middle of the connecting shell, the exhaust gas processor is located on the left side of the three-stage cooler, and the exhaust pipe is connected to the front side of the left side of the connecting shell, and the exhaust pipe is connected to the exhaust gas processor.
[0010] Furthermore, it also includes a recuperator and a heat conducting wire. The left part of the connecting shell is connected to the recuperator. The left part of the connecting shell is connected to multiple heat conducting wires. The heat conducting wires are all in contact with the recuperator. The first-stage cooler, the second-stage cooler and the recuperator are all in contact with the first liquid inlet pipe.
[0011] Furthermore, it also includes a filter, an exhaust fan and an exhaust duct. The filter is connected to the left side of the connecting shell, the filter is located on the left side of the reheater, the upper and lower parts of the left connecting pipe are connected to the exhaust fan, the left side of the outer shell is connected to the exhaust duct, and the exhaust fans are connected to the exhaust duct.
[0012] The beneficial effects of the utility model are as follows: the utility model has an outer shell made entirely of stainless steel, a first-stage cooler performs preliminary cooling on the incoming air, a second-stage cooler further cools the incoming air, and then the incoming air enters a third-stage cooler for complete cooling, thereby achieving the effects of reducing the footprint, having a neat appearance, a reasonable structure, strong operability, energy conservation and emission reduction, ensuring stable temperature operation of the system, and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0014] Figure 2 It is a structural schematic diagram of the utility model.
[0015] Figure 3 This is a schematic diagram of a first partial three-dimensional structure of the utility model.
[0016] Figure 4 It is a sectional view of the second partial three-dimensional structure of the utility model.
[0017] Figure 5 It is a sectional view of the third partial three-dimensional structure of the utility model.
[0018] Figure 6This is an exploded view of the fourth partial three-dimensional structure of the utility model.
[0019] Names and serial numbers of parts in the figure: 1_housing, 2_fixed inspection cover, 3_intake fan, 4_protective net, 5_connecting pipe, 6_connecting shell, 60_liquid drain pipe, 7_first liquid inlet pipe, 70_liquid outlet pipe, 8_first stage cooler, 9_second stage cooler, 10_third stage cooler, 100_second liquid inlet pipe, 11_exhaust processor, 110_exhaust pipe, 12_reheater, 13_heat conductive wire, 14_filter, 15_exhaust fan, 16_exhaust pipe. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0021] An open-loop multi-stage circulation cooling and reheating heat exchanger integration, such as Figure 1-Figure 6As shown, it includes a shell 1, a fixed inspection cover 2, an air intake fan 3, a protective net 4, a connecting pipe 5, a connecting shell 6, a liquid accumulation drain pipe 60, a first liquid inlet pipe 7, a liquid outlet pipe 70, a primary cooler 8, a secondary cooler 9, a tertiary cooler 10, a second liquid inlet pipe 100, an exhaust gas processor 11, an exhaust pipe 110, a reheater 12, a heat conducting wire 13, a filter 14, an exhaust fan 15 and an exhaust pipe 16. The upper side of the shell 1 is clamped with a fixed inspection cover 2, and the right side of the shell 1 is connected to two upper and lower air intake fans 3. The upper and lower ends of the air intake fans 3 are connected to the upper and lower ends of the air intake fans 3. The left and right sides of the outer shell 1 are connected to a protective net 4, the inner sides of the left and right sides of the outer shell 1 are connected to a connecting pipe 5, the air intake fan 3 is clamped with the right connecting pipe 5, a connecting shell 6 is connected between the connecting pipes 5, a liquid accumulation drain pipe 60 is connected to the lower side of the connecting shell 6, the liquid accumulation drain pipe 60 is connected to the outer shell 1, a first liquid inlet pipe 7 is connected to the lower part of the connecting shell 6, the first liquid inlet pipe 7 is connected to the outer shell 1, a liquid outlet pipe 70 is connected to the left side of the connecting shell 6, the liquid outlet pipe 70 is connected to the outer shell 1, the first liquid inlet pipe 7 is connected to the liquid outlet pipe 70, a primary cooler 8 is connected to the right side of the connecting shell 6, and the connecting The right part of the shell 6 is connected to a secondary cooler 9, which is located on the left part of the primary cooler 8. The middle part of the shell 6 is connected to a tertiary cooler 10. The front side of the middle part of the shell 6 is connected to a second liquid inlet pipe 100, which is in contact with the tertiary cooler 10. The second liquid inlet pipe 100 is connected to the liquid outlet pipe 70. The second liquid inlet pipe 100 is connected to the outer shell 1. The middle part of the shell 6 is connected to an exhaust gas processor 11, which is located on the left part of the tertiary cooler 10. The front side of the left part of the shell 6 is connected to an exhaust pipe 110. The exhaust pipe 110 is connected to the exhaust gas processor 11, the left part of the connecting shell 6 is connected to the recuperator 12, the first-stage cooler 8, the second-stage cooler 9 and the recuperator 12 are all in contact with the first liquid inlet pipe 7, the left part of the connecting shell 6 is connected to a plurality of heat-conducting wires 13, the heat-conducting wires 13 are all in contact with the recuperator 12, the left part of the connecting shell 6 is connected to a filter screen 14, the filter screen 14 is located on the left side of the recuperator 12, the upper and lower parts of the left connecting pipe 5 are connected to the exhaust fan 15, the left side of the outer shell 1 is connected to the exhaust pipe 16, and the exhaust fans 15 are all connected to the exhaust pipe 16.
[0022] When using the utility model, first place the shell 1 in the exhaust area of the coater. The shell 1 is made of all stainless steel and has a long service life. Then start the air intake fan 3 and protect the air intake fan 3 through the protective net 4, so that the air intake fan 3 generates negative pressure to suck the exhaust air of the coater into the right connecting pipe 5, so that the exhaust air of the coater enters the connecting shell 6 from the right connecting pipe 5, and at the same time, introduces normal temperature circulating water of about 32°C to 37°C into the first liquid inlet pipe 7, and allows the low-temperature refrigerated water of about 7°C to 12°C provided by the user to enter the second liquid inlet pipe 100, so that the first-stage cooler 8 performs preliminary cooling of the incoming air, and the second-stage cooler 9 further cools the incoming air. Then the incoming air enters the third-stage cooler 10 for complete cooling, and then the incoming air passes through the exhaust processor 11 to remove harmful gases, and the harmful gases in the incoming air are discharged from the exhaust pipe 110. The normal temperature circulating water of about 32°C to 37°C rises in temperature after cooling the incoming air, and flows from the first liquid inlet pipe 7 to the recuperator 12, and conducts heat to the recuperator 12 through the heat conducting wire 13, so that the incoming air is heated and reheated by the recuperator 12, and then the normal temperature circulating water and the low temperature frozen water flow out from the liquid outlet pipe 70, and the filter screen 14 filters impurities, rust and other particles in the incoming air, and then the exhaust fan 15 is started to suck the processed incoming air into the exhaust pipe 16, so that the incoming air is recovered to the coating machine, thereby reducing the footprint, having a neat appearance, a reasonable structure, strong operability, energy saving and emission reduction, ensuring stable temperature operation of the system, and a long service life. When the connecting shell 6 needs to be inspected, the fixed inspection cover 2 can be opened, and the recovered liquid condensed by the incoming air during the condensation process falls into the accumulated liquid drain pipe 60 and flows out.
[0023] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. An open-loop multi-stage circulation cooling and rewarming heat exchanger integration, characterized in that: The utility model comprises a housing (1), a fixed inspection cover (2), an air intake fan (3) and a protective net (4); the fixed inspection cover (2) is clamped on the upper side of the housing (1); two upper and lower air intake fans (3) are connected to the right side of the housing (1); and the air intake fans (3) are both connected to the protective net (4).
2. The open-loop multi-stage circulation cooling and rewarming heat exchanger integration according to claim 1 is characterized in that: The invention also comprises a connecting pipe (5), a connecting shell (6), a liquid accumulation discharge pipe (60), a first liquid inlet pipe (7) and a liquid outlet pipe (70); the inner sides of the left and right parts of the outer shell (1) are both connected with the connecting pipe (5); the air intake fan (3) is clamped with the right connecting pipe (5); the connecting shell (6) is connected between the connecting pipes (5); the lower side of the connecting shell (6) is connected with the liquid accumulation discharge pipe (60); the liquid accumulation discharge pipe (60) is connected to the outer shell (1); the lower part of the connecting shell (6) is connected with the first liquid inlet pipe (7); the first liquid inlet pipe (7) is connected to the outer shell (1); the left part of the connecting shell (6) is connected with the liquid outlet pipe (70); the liquid outlet pipe (70) is connected to the outer shell (1); and the first liquid inlet pipe (7) is connected to the liquid outlet pipe (70).
3. The open-loop multi-stage circulation cooling and rewarming heat exchanger integration according to claim 2 is characterized in that: The invention also comprises a primary cooler (8), a secondary cooler (9), a tertiary cooler (10) and a second liquid inlet pipe (100); the primary cooler (8) is connected to the right part of the connecting shell (6); the secondary cooler (9) is connected to the right part of the connecting shell (6); the secondary cooler (9) is located on the left part of the primary cooler (8); the tertiary cooler (10) is connected to the middle part of the connecting shell (6); the second liquid inlet pipe (100) is connected to the front side of the middle part of the connecting shell (6); the second liquid inlet pipe (100) is in contact with the tertiary cooler (10); the second liquid inlet pipe (100) is connected to the liquid outlet pipe (70); and the second liquid inlet pipe (100) is connected to the outer shell (1).
4. The open-loop multi-stage circulation cooling and rewarming heat exchanger integration according to claim 3 is characterized in that: It also includes an exhaust gas processor (11) and an exhaust pipe (110); the exhaust gas processor (11) is connected to the middle of the connecting shell (6); the exhaust gas processor (11) is located on the left side of the tertiary cooler (10); the exhaust pipe (110) is connected to the front side of the left side of the connecting shell (6); and the exhaust pipe (110) is connected to the exhaust gas processor (11).
5. The open-loop multi-stage circulation cooling and rewarming heat exchanger integration according to claim 4 is characterized in that: It also includes a recuperator (12) and a heat-conducting wire (13); the left portion of the connecting shell (6) is connected to the recuperator (12); the left portion of the connecting shell (6) is connected to a plurality of heat-conducting wires (13); the heat-conducting wires (13) are all in contact with the recuperator (12); the primary cooler (8), the secondary cooler (9) and the recuperator (12) are all in contact with the first liquid inlet pipe (7).
6. The open-loop multi-stage circulation cooling and rewarming heat exchanger integration according to claim 5 is characterized in that: It also includes a filter (14), an exhaust fan (15) and an exhaust pipe (16); the filter (14) is connected to the left side of the connecting shell (6); the filter (14) is located on the left side of the reheater (12); the upper and lower parts of the left connecting pipe (5) are connected to the exhaust fan (15); the left side of the outer shell (1) is connected to the exhaust pipe (16); and the exhaust fan (15) is connected to the exhaust pipe (16) in a snap-fit manner.