Ultralow-dew-point single-processing-fan double-rotating-wheel purification and dehumidification unit with heat recovery function

Abstract

An ultralow-dew-point single-processing-fan double-rotating-wheel purification and dehumidification unit with a heat recovery function comprises a first-stage rotating wheel and a second-stage rotating wheel and is characterized in that the first-stage rotating wheel is provided with a first-stage adsorption area, a first-stage regeneration area and a first-stage waste heat recovery area, and the second-stage rotating wheel is provided with a second-stage adsorption area, a second-stage regeneration area and a second-stage waste heat recovery area; an outdoor fresh air inlet and a clean dry air outlet are formed in the left side and the right side of the first-stage adsorption area respectively, and the surface heat exchanger is arranged between the regenerated air outlet surface heat exchanger pipeline and the regenerated air inlet surface heat exchanger pipeline and used for heating fresh air. According to the waste heat recovery device, waste heat entering from a waste heat air inlet surface heat exchanger pipeline is recycled, the temperature of fresh air is increased to 60 DEG C from 35 DEG C, and therefore energy consumption for heating the fresh air through a heater is saved, and compared with the prior art, the waste heat recovery device has the advantages of purifying and drying air, protecting the environment and saving energy.

Description

Technical Field

[0001] The utility model relates to the technical field of air dehumidification, in particular to an ultra-low dew point single-processing fan double-rotor purification and dehumidification unit with heat recovery. Background Art

[0002] Rotary dehumidifier is an important branch in the field of air conditioning and a typical representative of heating dehumidification. The main component of the rotary dehumidifier is the rotor. The surface of the rotor is coated with a desiccant and is provided with honeycomb-shaped multi-porous channels. By slowly rotating the rotor, moisture in the humid air flowing through the rotor can be absorbed. The rotor after desiccant absorption is blown by a high-temperature dry air flow to dehydrate and regenerate the desiccant. The regeneration air heater in the current rotary dehumidifier consumes a lot of energy to heat the regeneration air, resulting in a waste of resources. Therefore, the current rotary dehumidifier has the disadvantages of high regeneration energy consumption, waste of resources, and environmental pollution. Summary of the invention

[0003] In view of the problems of high regeneration energy consumption, waste of resources and environmental pollution of traditional rotary dehumidifiers, the utility model provides an ultra-low dew point single-processing fan double-rotor purification dehumidification unit with heat recovery. A surface heat exchanger is arranged between the regeneration air outlet surface heat exchanger pipe and the regeneration air inlet surface heat exchanger pipe to heat the fresh air, so that the waste heat coming in from the waste heat air inlet surface heat exchanger pipe is recycled and utilized, and the fresh air temperature is increased from 35°C to 60°C, thereby saving the energy consumption of heating the fresh air with a heater. The equipment uses purified dry hot air to bake battery pole pieces and battery cells, thereby protecting the environment and saving energy.

[0004] The technical solution of the utility model is: an ultra-low dew point single-processing fan double-rotor purification and dehumidification unit with heat recovery, comprising a primary rotor and a secondary rotor, characterized in that: the primary rotor is provided with a primary adsorption zone, a primary regeneration zone and a primary waste heat recovery zone, and the secondary rotor is provided with a secondary adsorption zone, a secondary regeneration zone and a secondary waste heat recovery zone;

[0005] An outdoor fresh air inlet and a clean dry air outlet are respectively arranged on the left and right sides of the primary adsorption zone. A primary filter and a primary surface cooler are sequentially connected between the outdoor fresh air inlet and the primary adsorption zone through a pipeline. One end of the outlet of the primary surface cooler is connected to the secondary surface cooler, and the other end of the outlet of the primary surface cooler is connected to the primary waste heat recovery zone.

[0006] The first regeneration zone is provided with a regeneration air inlet No. 1 pipe and a regeneration air outlet No. 1 pipe on the left and right sides respectively. The regeneration air inlet No. 1 pipe is connected to the first steam heater, and the first steam heater is connected to the surface heat exchanger through the regeneration air outlet surface heat exchanger pipe, and the surface heat exchanger is connected to the surface heat exchanger through the regeneration air inlet surface heat exchanger pipe, and the other end of the regeneration air inlet surface heat exchanger pipe is connected to the filter and the fresh air inlet in sequence, and the other end of the regeneration air outlet No. 1 pipe is connected to the regeneration fan and the regeneration air outlet in sequence;

[0007] A clean dry air outlet and a dry air outlet are respectively provided on the left and right sides of the secondary adsorption zone, and a dehumidification fan, a medium efficiency filter, and a surface cooler are sequentially connected between the clean dry air outlet and the secondary adsorption zone through a pipeline;

[0008] The left and right sides of the secondary waste heat recovery zone are respectively provided with a regeneration air inlet No. 2 pipeline and a regeneration air outlet No. 2 pipeline, the regeneration air inlet No. 2 pipeline is connected to the surface cooler outlet, the regeneration air outlet No. 2 pipeline is connected to the second steam heater, the second steam heater outlet is connected to the secondary regeneration zone through a pipeline, the secondary regeneration zone is connected to the fan through a pipeline, the fan is connected to the surface heat exchanger through the waste heat air inlet surface heat exchanger pipeline, and the surface heat exchanger is connected to the primary waste heat recovery zone through the waste heat air outlet surface heat exchanger pipeline;

[0009] The dry air outlet is connected to the third steam heater through a pipeline, the outlet of the third steam heater is connected to the battery pole piece and cell baking box through a pipeline, and the outlet of the battery pole piece and cell baking box is connected to the dehumidification fan through a pipeline.

[0010] The beneficial effects of the utility model are:

[0011] 1. A surface heat exchanger is arranged between the regeneration air outlet surface heat exchanger pipe and the regeneration air inlet surface heat exchanger pipe to heat the fresh air, so that the waste heat coming from the waste heat air inlet surface heat exchanger pipe can be recycled and utilized, and the fresh air temperature is increased from 35°C to 60°C, thereby saving the energy consumption of heating the fresh air with a heater. Compared with the existing technology, this equipment has the advantages of purifying dry air, protecting the environment and saving energy.

[0012] 2. Collect fine dust in the gas through the filter to purify the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 1Middle: 1. Regeneration air outlet, 2. Regeneration fan, 3. Regeneration air outlet No. 1 pipeline, 4. Primary rotor, 5. Regeneration air inlet No. 1 pipeline, 6. First steam heater, 7. Regeneration air outlet surface heat exchanger pipeline, 8. Surface heat exchanger, 9. Regeneration air inlet surface heat exchanger pipeline, 10. Filter, 11. Fresh air inlet, 12. Primary regeneration area, 13. Primary adsorption area, 14. Primary waste heat recovery area, 15. Outdoor fresh air inlet, 16. Primary filter, 17. Primary surface cooler, 18. Secondary surface cooler, 19. Waste heat air outlet pipe of surface heat exchanger, 20. Waste heat air inlet pipe of surface heat exchanger, 21. Fan, 22. Secondary wheel, 23. Secondary regeneration area, 24. Secondary adsorption area, 25. Secondary waste heat recovery area, 26. Second steam heater, 27. Regeneration air outlet No. 2 pipe, 28. Regeneration air inlet No. 2 pipe, 29. Dry air outlet, 30. Third steam heater, 31. Battery pole piece and cell baking oven, 32. Dehumidification fan, 33. Medium efficiency filter, 34. Surface cooler, 35. Clean dry air outlet. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] The utility model discloses an ultra-low dew point single-processing fan double-rotor purification and dehumidification unit with heat recovery, comprising a primary rotor 4 and a secondary rotor 22, characterized in that: the primary rotor 4 is provided with a primary adsorption area 13, a primary regeneration area 12 and a primary waste heat recovery area 14, and the secondary rotor 22 is provided with a secondary adsorption area 24, a secondary regeneration area 23 and a secondary waste heat recovery area 25;

[0017] The first-level adsorption zone 13 is provided with an outdoor fresh air inlet 15 and a clean dry air outlet 35 on the left and right sides respectively. A primary filter 16 and a first-level surface cooler 17 are sequentially connected between the outdoor fresh air inlet 15 and the first-level adsorption zone 13 through a pipeline. One end of the outlet of the first-level surface cooler 17 is connected to the second-level surface cooler 18, and the other end of the outlet of the first-level surface cooler 17 is connected to the first-level waste heat recovery zone 14;

[0018] The first regeneration zone 12 is provided with a regeneration air inlet No. 1 pipe 5 and a regeneration air outlet No. 1 pipe 3 on the left and right sides respectively. The regeneration air inlet No. 1 pipe 5 is connected to the first steam heater 6. The first steam heater 6 is connected to the surface heat exchanger 8 through the regeneration air outlet surface heat exchanger pipe 7. The surface heat exchanger 8 is connected to the surface heat exchanger 8 through the regeneration air inlet surface heat exchanger pipe 9. The other end of the regeneration air inlet surface heat exchanger pipe 9 is connected to the filter 10 and the fresh air inlet 11 in sequence. The other end of the regeneration air outlet No. 1 pipe 3 is connected to the regeneration fan 2 and the regeneration air outlet 1 in sequence.

[0019] The left and right sides of the secondary adsorption zone 24 are respectively provided with a clean dry air outlet 35 and a dry air outlet 29, and the clean dry air outlet 35 and the secondary adsorption zone 24 are sequentially connected with a dehumidification fan 32, a medium efficiency filter 33, and a surface cooler 34 through a pipeline;

[0020] The left and right sides of the secondary waste heat recovery zone 25 are respectively provided with a regeneration air inlet No. 2 pipeline 28 and a regeneration air outlet No. 2 pipeline 27, the regeneration air inlet No. 2 pipeline 28 is connected to the outlet of the surface cooler 34, the regeneration air outlet No. 2 pipeline 27 is connected to the second steam heater 26, the outlet of the second steam heater 26 is connected to the secondary regeneration zone 23 through a pipeline, the secondary regeneration zone 23 is connected to the fan 21 through a pipeline, the fan 21 is connected to the surface heat exchanger 8 through the waste heat air inlet surface heat exchanger pipeline 20, and the surface heat exchanger 8 is connected to the primary waste heat recovery zone 14 through the waste heat air outlet surface heat exchanger pipeline 19;

[0021] The dry air outlet 29 is connected to the third steam heater 30 through a pipeline, the outlet of the third steam heater 30 is connected to the battery pole piece and cell baking box 31 through a pipeline, and the outlet of the battery pole piece and cell baking box 31 is connected to the dehumidification fan 32 through a pipeline.

[0022] The working process of this utility model:

[0023] Outdoor fresh air (air volume 2000m 3 / h, temperature 35℃, dew point 30℃, moisture content 27g / kg) through the outdoor fresh air inlet 15, first filtered by the primary filter 16 to remove impurities, and then passed through the primary surface cooler 17, after cooling (air volume 2000m 3 / h, temperature 13℃, dew point 12.5℃, moisture content 9g / kg)

[0024] The air coming out of the primary waste heat recovery area 14 (air volume 4000m 3 / h, temperature 41℃, dew point 0.8℃, moisture content 4g / kg) mixed (air volume 6000m 3 / h, temperature 32℃, dew point 5.7℃, moisture content 5.7g / kg) enters the secondary surface cooler 18, and after cooling (air volume 6000m 3 / h, temperature 13℃, dew point 5.7℃, moisture content 5.7g / kg), and then enters the primary adsorption area 13 set by the primary rotor 4 to absorb the moisture in the outdoor fresh air and become clean dry air (air volume 6000m 3 / h, temperature 33°C, dew point -10.8°C, moisture content 1.5g / kg);

[0025] The dehumidification fan 32 sucks in the return air from the battery cell baking box 31 (air volume 22500m 3 / h, temperature 25℃, dew point -50.0℃, moisture content 0.024g / kg) and the clean dry air outlet 35 (air volume 6000m 3 / h, temperature 33℃, dew point -10.8℃, moisture content 1.5g / kg) mixed (air volume 28500m 3 / h, temperature 27℃, dew point -26.1℃, moisture content 0.35g / kg) enters the medium efficiency filter 33 to remove impurities, and then passes through the surface cooler 34 for cooling (air volume 28500m 3 / h, temperature 18°C, dew point -26.1°C, moisture content 0.35g / kg);

[0026] A portion of the air enters the secondary adsorption zone 24, and the air from the secondary adsorption zone 24 enters the third steam heater 30, and after being heated (air volume 24500m 3 / h, temperature 20°C, dew point -65°C, moisture content 0.003g / kg) enters the battery pole piece and battery cell baking oven 31, and the return air is sucked out from the battery pole piece and battery cell baking oven 31 by the negative pressure of the dehumidification fan 32;

[0027] Another part of the air enters the secondary waste heat recovery area 25. The air from the secondary waste heat recovery area 25 enters the second steam heater 26 and is heated (air volume 4000m 3 / h, temperature 140℃, dew point -27.6℃, moisture content 0.3g / kg) enters the secondary regeneration zone 23, and the air coming out of the secondary regeneration zone 23 (air volume 4000m 3 / h, temperature 71℃, dew point 0.8℃, moisture content 4g / kg) through the fan 21, through the waste heat air into the surface heat exchanger pipe 20 into the surface heat exchanger 8, after heat exchange (air volume 4000m 3 / h, temperature 41°C, dew point 0.8°C, moisture content 4g / kg) enters the primary waste heat recovery area 14, and the air coming out of the primary waste heat recovery area 14 is mixed with the air coming from the primary surface cooler 17;

[0028] Outdoor fresh air (air volume 2300m 3 / h, temperature 35℃, dew point 30℃, moisture content 27g / kg) passes through the fresh air inlet 11, first filtered by the filter 10 to remove impurities, and then enters the surface heat exchanger 8 through the regeneration air inlet surface heat exchanger pipe 9. After heat exchange (air volume 2300m 3 / h, temperature 60℃, dew point 30℃, moisture content 27g / kg) enters the first steam heater 6, and after heating (air volume 2300m 3 / h, temperature 120℃, dew point 30℃, moisture content 27g / kg) enters the primary regeneration zone 12, and the air coming out of the primary regeneration zone 12 is discharged from the regeneration air outlet 1 through the negative pressure of the regeneration fan 2.

[0029] The biggest feature of this equipment is that a surface heat exchanger is set between the regeneration air outlet surface heat exchanger pipe and the regeneration air inlet surface heat exchanger pipe to heat the fresh air, so that the waste heat from the waste heat air inlet surface heat exchanger pipe is recycled and utilized, and the fresh air temperature is increased from 35℃ to 60℃, thereby saving the energy consumption of using a heater to heat the fresh air. Compared with the existing technology, this equipment has the advantages of purifying dry air, protecting the environment, and saving energy. Through the filter, fine dust in the gas is collected to purify the air.

Claims

1. An ultra-low dew point single-processing fan double-rotor purification and dehumidification unit with heat recovery, comprising a primary rotor (4) and a secondary rotor (22), characterized in that: The primary rotor (4) is provided with a primary adsorption zone (13), a primary regeneration zone (12) and a primary waste heat recovery zone (14); the secondary rotor (22) is provided with a secondary adsorption zone (24), a secondary regeneration zone (23) and a secondary waste heat recovery zone (25); The first-level adsorption zone (13) is provided with an outdoor fresh air inlet (15) and a clean dry air outlet (35) on the left and right sides respectively; a primary filter (16) and a first-level surface cooler (17) are sequentially connected between the outdoor fresh air inlet (15) and the first-level adsorption zone (13) through a pipeline; one end of the outlet of the first-level surface cooler (17) is connected to the second-level surface cooler (18); and the other end of the outlet of the first-level surface cooler (17) is connected to the first-level waste heat recovery zone (14); The first regeneration zone (12) is provided with a regeneration air inlet No. 1 pipe (5) and a regeneration air outlet No. 1 pipe (3) on the left and right sides respectively. The regeneration air inlet No. 1 pipe (5) is connected to the first steam heater (6). The first steam heater (6) is connected to the surface heat exchanger (8) through the regeneration air outlet surface heat exchanger pipe (7). The surface heat exchanger (8) is connected to the surface heat exchanger (8) through the regeneration air inlet surface heat exchanger pipe (9). The other end of the regeneration air inlet surface heat exchanger pipe (9) is connected to the filter (10) and the fresh air inlet (11) in sequence. The other end of the regeneration air outlet No. 1 pipe (3) is connected to the regeneration fan (2) and the regeneration air outlet (1) in sequence. A clean dry air outlet (35) and a dry air outlet (29) are respectively provided on the left and right sides of the secondary adsorption zone (24); a dehumidification fan (32), a medium efficiency filter (33), and a surface cooler (34) are sequentially connected between the clean dry air outlet (35) and the secondary adsorption zone (24) through a pipeline; The left and right sides of the secondary waste heat recovery zone (25) are respectively provided with a regeneration air inlet No. 2 pipeline (28) and a regeneration air outlet No. 2 pipeline (27); the regeneration air inlet No. 2 pipeline (28) is connected to the outlet of the surface cooler (34); the regeneration air outlet No. 2 pipeline (27) is connected to the second steam heater (26); the outlet of the second steam heater (26) is connected to the secondary regeneration zone (23) through a pipeline; the secondary regeneration zone (23) is connected to the fan (21) through a pipeline; the fan (21) is connected to the surface heat exchanger (8) through the waste heat air inlet surface heat exchanger pipeline (20); the surface heat exchanger (8) is connected to the primary waste heat recovery zone (14) through the waste heat air outlet surface heat exchanger pipeline (19); The dry air outlet (29) is connected to the third steam heater (30) through a pipeline, the outlet of the third steam heater (30) is connected to the battery cell baking box (31) through a pipeline, and the outlet of the battery cell baking box (31) is connected to the dehumidification fan (32) through a pipeline.

Images