An ultra-low dew point double-coupling energy-saving dehumidifier unit

Abstract

This invention relates to the field of dehumidification equipment technology, and in particular to an ultra-low dew point dual-coupling energy-saving dehumidifier unit, comprising a treatment-side module and a regeneration-side module. The treatment-side module includes a pre-filter, a first surface cooler, a first evaporator, a first rotor, a return air fan, a medium-efficiency filter, a second surface cooler, a second evaporator, and a second rotor, connected sequentially by pipes. The regeneration-side module includes a second condenser, a second rotor regeneration heater, a second rotor, a connecting pipe, a third condenser, a first rotor regeneration heater, a first rotor, a third evaporator, and a regeneration exhaust fan, connected sequentially by pipes. This invention employs a multi-stage dehumidification structure with dual pre- and medium-efficiency filters, dual surface coolers and dual evaporators for dual cooling, and dual rotors for dual adsorption, achieving gradual and efficient removal of moisture from the air. It can stably control the air dew point below -70℃, solving the problem of insufficient dehumidification effect in existing conventional units.

Description

Technical Field

[0001] This invention relates to the field of dehumidification equipment technology, and in particular to an ultra-low dew point dual-coupling energy-saving dehumidifier unit. Background Technology

[0002] In high-end manufacturing fields such as solid-state battery production, the production environment has stringent requirements for air dew point, needing to be controlled below -70℃. This places dual high demands on the operational stability and energy efficiency of dehumidifier units. Currently, the industry uses conventional low-dew-point dehumidifiers to achieve the -70℃ dew point control requirement. However, existing conventional dehumidifiers have poor performance in handling the moisture content of fresh air, lacking tiered temperature and humidity control for the fresh air. The inability to efficiently remove moisture from the air directly affects the efficiency of subsequent dehumidification processes. Therefore, it is necessary to design an ultra-low dew-point dual-coupling energy-saving dehumidifier unit. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an ultra-low dew point dual-coupling energy-saving dehumidifier unit.

[0004] The technical solution adopted in this invention is as follows: an ultra-low dew point dual-coupling energy-saving dehumidifier unit, comprising a treatment-side module and a regeneration-side module. The treatment-side module includes a primary filter, a first surface cooler, a first evaporator, a first rotor, a return air fan, a medium-efficiency filter, a second surface cooler, a second evaporator, and a second rotor, connected in sequence by pipes. The regeneration-side module includes a second condenser, a second rotor regeneration heater, a second rotor, a connecting pipe, a third condenser, a first rotor regeneration heater, a first rotor, a third evaporator, and a regeneration exhaust fan, connected in sequence by pipes.

[0005] As a further description of the above technical solution: The first rotor is divided into a processing zone and a regeneration zone; the second rotor is divided into a processing zone, a recycling zone, and a regeneration zone.

[0006] As a further description of the above technical solution: The air outlet of the second rotary processing zone is connected to the air inlet of the compensated heater via a pipe.

[0007] As a further description of the above technical solution: The air outlet of the second rotary recovery zone is connected to the air inlet of the second condenser via a pipe.

[0008] As a further description of the above technical solution: The air outlet of the primary filter is sealed and connected to the air inlet of the first surface cooler; the air outlet of the first surface cooler is sealed and connected to the air inlet of the first evaporator; the air outlet of the first evaporator is sealed and connected to the air inlet of the processing area of ​​the first rotor; the air outlet of the processing area of ​​the first rotor is sealed and connected to the air inlet of the return air fan; the air outlet of the return air fan is sealed and connected to the air inlet of the medium-efficiency filter; the air outlet of the medium-efficiency filter is sealed and connected to the air inlet of the second surface cooler; the air outlet of the second surface cooler is sealed and connected to the air inlet of the second evaporator; and the air outlet of the second evaporator is sealed and connected to the air inlet of the processing area of ​​the second rotor.

[0009] As a further description of the above technical solution: The air outlet of the second condenser is sealed and connected to the air inlet of the second rotary regeneration heater. The air outlet of the second rotary regeneration heater is sealed and connected to the air inlet of the second rotary regeneration zone. The air outlet of the second rotary regeneration zone is sealed and connected to the connecting pipe. The connecting pipe is sealed and connected to the air inlet of the third condenser. The air outlet of the third condenser is sealed and connected to the air inlet of the first rotary regeneration heater. The air outlet of the first rotary regeneration heater is sealed and connected to the air inlet of the first rotary regeneration zone. The air outlet of the first rotary regeneration zone is sealed and connected to the air inlet of the third evaporator. The air outlet of the third evaporator is sealed and connected to the regeneration fan.

[0010] As a further description of the above technical solution: The liquid outlet of the first evaporator is connected to the liquid inlet of the first compressor via a pipeline. The liquid outlet of the first compressor is connected to the liquid inlet of the first condenser via a pipeline. The liquid outlet of the first condenser is connected to the liquid inlet of the first expansion valve via a pipeline. The liquid outlet of the first expansion valve is connected to the liquid inlet of the first evaporator via a pipeline.

[0011] As a further description of the above technical solution: The liquid outlet of the second evaporator is connected to the liquid inlet of the second compressor via a pipeline. The liquid outlet of the second compressor is connected to the liquid inlet of the second condenser via a pipeline. The liquid outlet of the second condenser is connected to the liquid inlet of the second expansion valve via a pipeline. The liquid outlet of the second expansion valve is connected to the liquid inlet of the second evaporator via a pipeline.

[0012] As a further description of the above technical solution: The liquid outlet of the third evaporator is connected to the liquid inlet of the third compressor via a pipeline. The liquid outlet of the third compressor is connected to the liquid inlet of the third condenser via a pipeline. The liquid outlet of the third condenser is connected to the liquid inlet of the third expansion valve via a pipeline. The liquid outlet of the third expansion valve is connected to the liquid inlet of the third evaporator via a pipeline.

[0013] The present invention has the following beneficial effects: This invention employs a multi-stage dehumidification structure with dual primary and secondary filters, dual surface coolers and dual evaporators for dual cooling, and dual impellers for dual adsorption. All components are sealed and connected in series to form an airtight dehumidification channel. Fresh air undergoes primary cooling and dehumidification, first-stage deep adsorption, second-stage cooling and dehumidification, and second-stage deep adsorption in a layered process, achieving gradual and efficient removal of moisture from the air. It can stably control the air dew point below -70℃, fully meeting the stringent dehumidification requirements of high-end industrial fields such as solid-state batteries and semiconductor manufacturing, and solving the problem of insufficient dehumidification effect of existing conventional units.

[0014] This invention achieves multiple energy savings through a dual-coupling heat recovery design and component integration optimization on the regeneration side, resulting in a significant reduction in overall unit energy consumption: Firstly, the second condenser on the regeneration side heats the regeneration air from 60°C to 85°C using the unit's own heat exchange without external power drive. This heating range saves 60% of energy consumption, providing heat energy replenishment for the second rotor regeneration. Furthermore, the second evaporator is integrated into the dehumidification channel on the treatment side, further ensuring zero-power operation during this heating process. Secondly, the third evaporator, equipped with heat pump recovery technology, reduces the regeneration exhaust air temperature from 45°C-55°C to approximately 25°C. The extracted heat energy is returned to the regeneration side air inlet channel, and with the cooperation of the third condenser, the air temperature from approximately 75°C to 110°C is raised to provide heat energy replenishment for the first rotor regeneration. This process saves more than 30% of electric heating or steam heating energy consumption. The synergistic effect of these multiple energy-saving designs reduces the unit's operating energy consumption to less than 40% of that of conventional low dew point dehumidifiers, significantly reducing the operating costs of industrial production. Attached Figure Description

[0015] Figure 1 This is a system schematic diagram of the ultra-low dew point dual-coupling energy-saving dehumidifier unit of the present invention.

[0016] Legend: 1. Primary filter; 2. First surface cooler; 3. First rotor; 4. Return air fan; 5. Medium-efficiency filter; 6. Second surface cooler; 7. Second rotor; 8. Compensated heater; 9. Second rotor regeneration heater; 10. Connecting pipe; 11. First rotor regeneration heater; 12. Regeneration exhaust fan; 13. First evaporator; 1301. First compressor; 1302. First condenser; 1303. First expansion valve; 14. Second evaporator; 1401. Second compressor; 1402. Second condenser; 1403. Second expansion valve; 15. Third evaporator; 1501. Third compressor; 1502. Third condenser; 1503. Third expansion valve. Detailed Implementation

[0017] Reference Figure 1The present invention provides an ultra-low dew point dual-coupling energy-saving dehumidifier unit, comprising a treatment side module and a regeneration side module. The treatment side module includes a primary filter 1, a first surface cooler 2, a first evaporator 13, a first rotor 3, a return air fan 4, a medium-efficiency filter 5, a second surface cooler 6, a second evaporator 14, and a second rotor 7, which are connected in sequence by pipes. The regeneration side module includes a second condenser 1402, a second rotor regeneration heater 9, a second rotor 7, a connecting pipe 10, a third condenser 1502, a first rotor regeneration heater 11, a first rotor 3, a third evaporator 15, and a regeneration exhaust fan 12, which are connected in sequence by pipes. The first rotor 3 is divided into a processing zone and a regeneration zone; the second rotor 7 is divided into a processing zone, a recovery zone, and a regeneration zone; the air outlet of the primary filter 1 is sealed and connected to the air inlet of the first surface cooler 2, the air outlet of the first surface cooler 2 is sealed and connected to the air inlet of the first evaporator 13, the air outlet of the first evaporator 13 is sealed and connected to the air inlet of the processing zone of the first rotor 3, the air outlet of the processing zone of the first rotor 3 is sealed and connected to the air inlet of the return air fan 4, the air outlet of the return air fan 4 is sealed and connected to the air inlet of the medium-efficiency filter 5, the air outlet of the medium-efficiency filter 5 is sealed and connected to the air inlet of the second surface cooler 6, the air outlet of the second surface cooler 6 is sealed and connected to the air inlet of the second evaporator 14, and the air outlet of the second evaporator 14 is sealed and connected to the air inlet of the processing zone of the second rotor 7; the second rotor 7... The air outlet of the receiving area is connected to the air inlet of the second condenser 1402 via a pipe. The air outlet of the second condenser 1402 is sealed and connected to the air inlet of the second rotary regeneration heater 9. The air outlet of the second rotary regeneration heater 9 is sealed and connected to the air inlet of the regeneration zone of the second rotary 7. The air outlet of the regeneration zone of the second rotary 7 is sealed and connected to the connecting pipe 10. The connecting pipe 10 is sealed and connected to the air inlet of the third condenser 1502. The air outlet of the third condenser 1502 is sealed and connected to the air inlet of the first rotary regeneration heater 11. The air outlet of the first rotary regeneration heater 11 is sealed and connected to the air inlet of the regeneration zone of the first rotary 3. The air outlet of the regeneration zone of the first rotary 3 is sealed and connected to the air inlet of the third evaporator 15. The air outlet of the third evaporator 15 is sealed and connected to the regeneration fan.

[0018] Specifically, during fresh air treatment, fresh air enters the pre-filter 1 at the beginning of the treatment-side air duct to remove large particulate impurities, and then enters the first surface cooler 2 through a sealed channel. The first surface cooler 2 operates with a parameter of 7℃ outlet and 12℃ return, controlling the fresh air temperature to 12℃, and then conveys it to the first evaporator 13 through the sealed channel. The first evaporator 13 cools the 12℃ fresh air to 6℃-8℃, reducing the moisture content in the air from 8.29 g / kg to 5.89 g / kg. After the moisture condenses and precipitates, the primary cooling and dehumidification of the fresh air is completed. The air after primary cooling and dehumidification enters the treatment area of ​​the first impeller 3 through the sealed channel. The first impeller 3 adsorbs the residual moisture in the air, achieving first-stage deep dehumidification. The air after first-stage dehumidification is powered by the return air fan 4 and conveyed through the sealed channel to the medium-efficiency filter 5 to remove small impurities in the air, preventing impurities from entering subsequent dehumidification stages and ensuring the service life of the dehumidification components. After secondary filtration, the air enters the second surface cooler 6 through a sealed channel. After secondary cooling, it enters the second evaporator 14 for further condensation to remove residual moisture from the air, achieving two-stage cooling and dehumidification. After two-stage cooling and dehumidification, the air enters the processing area of ​​the second rotor 7 through a sealed channel. The second rotor 7 performs ultimate deep adsorption dehumidification on the air, reducing the air dew point to below -70℃, meeting the requirements for ultra-low dew point dehumidification.

[0019] During regeneration, regeneration air at 60°C is extracted from the recovery zone of the second rotor 7 via the regeneration side duct. This air then enters the second condenser 1402 through a sealed channel. Through the unit's own heat exchange, the regeneration air is heated from 60°C to 85°C. This process requires no external power. The 85°C regeneration air then enters the second rotor regeneration heater 9 through the sealed channel. After being heated to a temperature suitable for the regeneration of the second rotor 7, it enters the regeneration zone of the second rotor 7, where it undergoes regeneration analysis to remove adsorbed moisture, completing the regeneration of the second rotor 7. The regeneration air from the second rotor 7 is then transported to the third condenser 1502 through the regeneration connecting pipe 10, a sealed channel. The third condenser 1502, in conjunction with heat pump recovery technology, replenishes the heat energy of the regeneration air. Subsequently, the regeneration air enters the first rotor regeneration heater 11 through a sealed channel, where it is heated to 130°C before entering the regeneration zone of the first rotor 3. There, it undergoes regeneration analysis to remove adsorbed moisture, completing the regeneration of the first rotor 3. The regenerated air, with a temperature of 45℃-55℃ after two rounds of rotary regeneration, enters the third evaporator 15 through a sealed channel. The third evaporator 15 is equipped with heat pump recovery technology, which reduces the temperature of the regenerated exhaust air from 55℃ to about 25℃. At the same time, the extracted heat energy is returned to the regenerated side air inlet channel at the front end of the third condenser 1502 through the heat exchange pipeline, raising the temperature of the regenerated side air inlet air from about 75℃ to 110℃, providing heat energy replenishment for the regenerated air temperature rise. The regenerated air that has completed heat energy extraction enters the regenerated exhaust fan 12 through the sealed channel. Through the three-way reversing valve at the air outlet, it can be directly discharged to the outside or recovered to the fresh air inlet of the treatment side air duct, realizing the secondary recovery and utilization of waste heat.

[0020] The air outlet of the second rotor 7 processing area is connected to the air inlet of the compensated heater 8 through a pipe. During operation, air with an ultra-low dew point below -70℃ enters the compensated heater 8 through a sealed channel. The compensated heater 8 heats the air to the target operating temperature according to actual needs, completing the entire dehumidification process on the processing side and outputting dry air with stable temperature and compliant dew point.

[0021] The liquid outlet of the first evaporator 13 is connected to the liquid inlet of the first compressor 1301 via a pipeline. The liquid outlet of the first compressor 1301 is connected to the liquid inlet of the first condenser 1302 via a pipeline. The liquid outlet of the first condenser 1302 is connected to the liquid inlet of the first expansion valve 1303 via a pipeline. The liquid outlet of the first expansion valve 1303 is connected to the liquid inlet of the first evaporator 13 via a pipeline.

[0022] The liquid outlet of the second evaporator 14 is connected to the liquid inlet of the second compressor 1401 via a pipeline. The liquid outlet of the second compressor 1401 is connected to the liquid inlet of the second condenser 1402 via a pipeline. The liquid outlet of the second condenser 1402 is connected to the liquid inlet of the second expansion valve 1403 via a pipeline. The liquid outlet of the second expansion valve 1403 is connected to the liquid inlet of the second evaporator 14 via a pipeline.

[0023] The liquid outlet of the third evaporator 15 is connected to the liquid inlet of the third compressor 1501 via a pipeline. The liquid outlet of the third compressor 1501 is connected to the liquid inlet of the third condenser 1502 via a pipeline. The liquid outlet of the third condenser 1502 is connected to the liquid inlet of the third expansion valve 1503 via a pipeline. The liquid outlet of the third expansion valve 1503 is connected to the liquid inlet of the third evaporator 15 via a pipeline.

[0024] Table 1 shows the relevant data for the operation of this unit. Sample Group Generator Line Voltage (v) Generator Line Current (A) Generator Active Power (kw) Generator Active Energy Consumption (kwH) 1 230.40 0.00 0.00 106773.44 2 230.80 0.00 0.00 106773.44 3 230.90 0.00 0.00 106773.44 4 234.70 0.00 0.00 106773.44 5 231.70 0.00 0.00 106773.44 6 229.90 0.00 0.00 106773.44 7 230.40 0.00 0.00 106773.44 8 231.80 0.00 0.00 106773.44 9 233.10 0.00 0.00 106773.44 10 234.70 0.00 0.00 106773.44 11 236.20 0.00 0.00 106773.44 Table 1 As shown in Table 1, during actual operation, the unit's line voltage remained stable between 229.90V and 236.20V, with minimal fluctuations, ensuring a stable power supply environment for the unit. The unit's line current and power output were both displayed as 0.00, indicating that under the specific operating conditions sampled, the unit was operating at a low load, thus achieving energy savings.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-coupling energy-saving dehumidifier unit with ultra-low dew point, characterized in that: The system includes a processing-side module and a regeneration-side module. The processing-side module includes a primary filter, a first surface cooler, a first evaporator, a first rotor, a return air fan, a medium-efficiency filter, a second surface cooler, a second evaporator, and a second rotor, all connected in sequence by pipes. The regeneration-side module includes a second condenser, a second rotor regeneration heater, a second rotor, a connecting pipe, a third condenser, a first rotor regeneration heater, a first rotor, a third evaporator, and a regeneration exhaust fan, all connected in sequence by pipes.

2. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The first rotor is divided into a processing zone and a regeneration zone; the second rotor is divided into a processing zone, a recycling zone, and a regeneration zone.

3. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The air outlet of the second rotary processing zone is connected to the air inlet of the compensated heater via a pipe.

4. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The air outlet of the second rotary recovery zone is connected to the air inlet of the second condenser via a pipe.

5. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The air outlet of the primary filter is sealed and connected to the air inlet of the first surface cooler; the air outlet of the first surface cooler is sealed and connected to the air inlet of the first evaporator; the air outlet of the first evaporator is sealed and connected to the air inlet of the processing area of ​​the first rotor; the air outlet of the processing area of ​​the first rotor is sealed and connected to the air inlet of the return air fan; the air outlet of the return air fan is sealed and connected to the air inlet of the medium-efficiency filter; the air outlet of the medium-efficiency filter is sealed and connected to the air inlet of the second surface cooler; the air outlet of the second surface cooler is sealed and connected to the air inlet of the second evaporator; and the air outlet of the second evaporator is sealed and connected to the air inlet of the processing area of ​​the second rotor.

6. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The air outlet of the second condenser is sealed and connected to the air inlet of the second rotary regeneration heater. The air outlet of the second rotary regeneration heater is sealed and connected to the air inlet of the second rotary regeneration zone. The air outlet of the second rotary regeneration zone is sealed and connected to the connecting pipe. The connecting pipe is sealed and connected to the air inlet of the third condenser. The air outlet of the third condenser is sealed and connected to the air inlet of the first rotary regeneration heater. The air outlet of the first rotary regeneration heater is sealed and connected to the air inlet of the first rotary regeneration zone. The air outlet of the first rotary regeneration zone is sealed and connected to the air inlet of the third evaporator. The air outlet of the third evaporator is sealed and connected to the regeneration fan.

7. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The liquid outlet of the first evaporator is connected to the liquid inlet of the first compressor via a pipeline. The liquid outlet of the first compressor is connected to the liquid inlet of the first condenser via a pipeline. The liquid outlet of the first condenser is connected to the liquid inlet of the first expansion valve via a pipeline. The liquid outlet of the first expansion valve is connected to the liquid inlet of the first evaporator via a pipeline.

8. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The liquid outlet of the second evaporator is connected to the liquid inlet of the second compressor via a pipeline. The liquid outlet of the second compressor is connected to the liquid inlet of the second condenser via a pipeline. The liquid outlet of the second condenser is connected to the liquid inlet of the second expansion valve via a pipeline. The liquid outlet of the second expansion valve is connected to the liquid inlet of the second evaporator via a pipeline.

9. The ultra-low dew point dual-coupling energy-saving dehumidifier unit according to claim 1, characterized in that: The liquid outlet of the third evaporator is connected to the liquid inlet of the third compressor via a pipeline. The liquid outlet of the third compressor is connected to the liquid inlet of the third condenser via a pipeline. The liquid outlet of the third condenser is connected to the liquid inlet of the third expansion valve via a pipeline. The liquid outlet of the third expansion valve is connected to the liquid inlet of the third evaporator via a pipeline.

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