Rotary wheel dehumidification device

Abstract

The utility model provides a rotating wheel dehumidification device which comprises a fresh air duct, a regeneration air duct, a rotating wheel dehumidification system and a refrigerating system, the rotating wheel dehumidification system comprises a first-stage dehumidification rotating wheel, and the first-stage dehumidification rotating wheel comprises a first dehumidification area, a second dehumidification area, a first regeneration area and a second regeneration area; the first dehumidification area is communicated with the second dehumidification area through the fresh air duct, and the first regeneration area is communicated with the second regeneration area through the regeneration air duct; the refrigerating system comprises a compressor and an air supply side heat exchanger, and the air supply side heat exchanger is arranged on the fresh air duct and communicates with an air outlet of the second dehumidification area. According to the rotary wheel dehumidification device, the dehumidification performance and the energy utilization efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of dehumidification device technology, and more particularly to a rotary dehumidification device. Background Technology

[0002] Rotary dehumidifier technology has been widely used in many fields with strict requirements for air humidity, such as industrial production, medical and pharmaceutical manufacturing, food processing, and electronics manufacturing. As various industries continue to raise their requirements for air quality and energy conservation, higher standards are being set for rotary dehumidifiers.

[0003] However, existing rotary dehumidifiers often have a relatively simple rotor area division, which makes it difficult for the rotor to fully utilize its performance during dehumidification and regeneration, thus limiting the overall dehumidification capacity and efficiency of the rotary dehumidifier. Furthermore, existing rotary dehumidifiers have shortcomings in their integration with refrigeration systems, failing to effectively improve the control accuracy of air temperature and humidity, and also hindering energy efficiency.

[0004] Therefore, it is necessary to provide an improved rotary dehumidifier to solve the above problems. Utility Model Content

[0005] This application provides a rotary dehumidifier that improves dehumidification performance and energy utilization efficiency.

[0006] This application discloses a rotary dehumidifier, including a fresh air duct, a regeneration duct, a rotary dehumidifier system, and a refrigeration system. The rotary dehumidifier system includes a primary dehumidifier rotor, which includes a first dehumidification zone, a second dehumidification zone, a first regeneration zone, and a second regeneration zone. The first dehumidification zone and the second dehumidification zone are connected through the fresh air duct, and the first regeneration zone and the second regeneration zone are connected through the regeneration duct. The refrigeration system includes a compressor and a supply air heat exchanger. The supply air heat exchanger is disposed on the fresh air duct and connected to the air outlet of the second dehumidifier zone.

[0007] Furthermore, the rotary dehumidification system also includes a secondary dehumidification rotor, which includes a third dehumidification zone disposed on the fresh air duct and a third regeneration zone disposed on the regeneration duct. The third dehumidification zone is located between the air inlet of the fresh air duct and the air inlet of the first dehumidification zone, and the third regeneration zone is located between the air outlet of the regeneration duct and the air outlet of the second regeneration zone.

[0008] Furthermore, the fresh air duct includes a first air duct and a second air duct connected in parallel, with both ends of the first air duct and the second air duct respectively connected to the air inlet of the fresh air duct and the air inlet of the first dehumidification zone; the rotary dehumidification system also includes a first air valve and a second air valve, with the first air valve and the third dehumidification zone disposed on the first air duct, and the second air valve disposed on the second air duct.

[0009] Furthermore, the regeneration air duct includes a third air duct and a fourth air duct connected in parallel, with both ends of the third air duct and the fourth air duct respectively connected to the exhaust end of the regeneration air duct and the air outlet of the second regeneration zone; the rotary dehumidification system also includes a third air valve and a fourth air valve, with the third air valve and the third regeneration zone disposed on the third air duct, and the fourth air valve disposed on the fourth air duct.

[0010] Furthermore, the rotary dehumidifier is also provided with a bypass ventilation duct, the two ends of which are respectively connected to the return air end of the regeneration air duct and the inlet of the first dehumidification zone.

[0011] Furthermore, the refrigeration system also includes an outdoor heat exchanger, a first three-way valve, a second three-way valve, and an outdoor unit solenoid valve. The first three-way valve, the second three-way valve, and the outdoor unit solenoid valve are used to cooperate in controlling the outdoor heat exchanger to switch between heat absorption state, heat release state, and off state.

[0012] Furthermore, the first end of the first three-way valve is connected to the outlet of the compressor, the second end of the first three-way valve is connected to the inlet of the compressor, and the third end of the first three-way valve is connected to the first end of the outdoor heat exchanger; the first end of the second three-way valve is connected to the inlet of the compressor, the second end of the second three-way valve is directly connected to the second end of the outdoor heat exchanger, and the third end of the second three-way valve is connected to the second end of the outdoor heat exchanger through an electronic expansion valve; the outdoor unit solenoid valve is connected between the second end of the first three-way valve and the inlet of the compressor.

[0013] Furthermore, the refrigeration system also includes several air-side solenoid valves connected to the air-side heat exchanger, the air-side solenoid valves being used to control the air-side heat exchanger to switch between heating, cooling and off states.

[0014] Furthermore, the refrigeration system also includes a first condenser, a second condenser, and a third condenser arranged in parallel, all of which are located on the regeneration air duct; the first condenser is connected to the air inlet of the first regeneration zone, the second condenser is located between the first regeneration zone and the second regeneration zone, and the third condenser is located between the second regeneration zone and the third regeneration zone.

[0015] Furthermore, the refrigeration system also includes a first evaporator, a second evaporator, and a third evaporator arranged in parallel, all of which are located on the fresh air duct; the first evaporator is connected to the air inlet of the third dehumidification zone, the second evaporator is located between the third dehumidification zone and the first dehumidification zone, and the third evaporator is located between the first dehumidification zone and the second dehumidification zone.

[0016] Furthermore, the refrigeration system also includes several electronic expansion valves and several pressure regulating valves. The electronic expansion valves are respectively located at the inlets of the first evaporator, the second evaporator, and the third evaporator, and the pressure regulating valves are respectively located at the outlets of the first evaporator, the second evaporator, and the third evaporator.

[0017] Furthermore, the refrigeration system also includes an oil separator, a gas-liquid separator, and an oil return capillary tube. The oil separator is located at the outlet of the compressor, the gas-liquid separator is located at the inlet of the compressor, and the two ends of the oil return capillary tube are respectively connected to the bottom of the oil separator and the inlet of the compressor.

[0018] Furthermore, the rotary dehumidification system also includes a fresh air fan and a return air fan for driving the gas. The fresh air fan is installed on the fresh air duct and close to the air inlet end of the fresh air duct, and the return air fan is installed on the regeneration duct and close to the air return end of the regeneration duct.

[0019] Furthermore, the first dehumidification zone, the second dehumidification zone, the first regeneration zone, and the second regeneration zone each occupy a 90° sector area, with the first dehumidification zone and the second dehumidification zone located at opposite corners, and the first regeneration zone and the second regeneration zone located at opposite corners.

[0020] The rotary dehumidifier of this application divides the primary dehumidification rotor into four zones, requiring both dehumidified and regenerated air to pass through the primary dehumidification rotor twice, thereby improving the working capacity and efficiency of the primary dehumidification rotor. Furthermore, by installing a supply-side heat exchanger at the air outlet of the second dehumidification zone, the supply-side heat exchanger can be controlled to heat or cool the dehumidified air according to actual needs, achieving flexible adjustment of the supply air temperature. This allows for more efficient coupling between the rotary dehumidification system and the refrigeration system, improving the energy utilization efficiency of the rotary dehumidifier.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0023] Figure 1 This is a schematic diagram of the rotary dehumidifier of this application.

[0024] Figure 2 yes Figure 1 A schematic diagram showing the partitioning of the primary and secondary dehumidification impellers.

[0025] Figure 3 yes Figure 1 A schematic diagram of a rotary dehumidifier in one mode.

[0026] Figure 4 yes Figure 1 A schematic diagram of the rotary dehumidifier in another mode.

[0027] Explanation of icon numbers:

[0028] 10. Fresh air duct; 11. Air inlet; 12. Air outlet; 13. First air duct; 14. Second air duct;

[0029] 20. Regeneration air duct; 21. Return air end; 22. Exhaust air end; 23. Third air duct; 24. Fourth air duct; 25. Bypass air duct;

[0030] 30. Rotary dehumidification system; 31. Primary dehumidification rotor; 311. First dehumidification zone; 312. Second dehumidification zone; 313. First regeneration zone; 314. Second regeneration zone; 32. Secondary dehumidification rotor; 321. Third dehumidification zone; 322. Third regeneration zone; 331. First air valve; 332. Second air valve; 333. Third air valve; 334. Fourth air valve; 341. Fresh air fan; 342. Return air fan;

[0031] 40. Refrigeration system; 41. Compressor; 421. Supply air side heat exchanger; 422. Outdoor side heat exchanger; 423. Outdoor fan; 431. First three-way valve; 432. Second three-way valve; 433. First proportional valve; 434. Second proportional valve; 435. Check valve; 441. Outdoor unit solenoid valve; 442. Supply air side solenoid valve; 4421. First supply air side solenoid valve; 4422. Second supply air side solenoid valve; 4423. The... Three air supply side solenoid valves; 4424, Fourth air supply side solenoid valve; 443, Indoor solenoid valve; 45, Electronic expansion valve; 461, First condenser; 462, Second condenser; 463, Third condenser; 471, First evaporator; 472, Second evaporator; 473, Third evaporator; 48, Pressure regulating valve; 491, Oil separator; 492, Gas-liquid separator; 493, Oil return capillary tube; 494, Liquid receiver. Detailed Implementation

[0032] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0033] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0034] The embodiments of this application will now be described in detail.

[0035] like Figure 1 As shown, this application provides a rotary dehumidifier, including a fresh air duct 10, a regeneration air duct 20, a rotary dehumidifier system 30, and a refrigeration system 40. The rotary dehumidifier system 30 and the refrigeration system 40 are respectively connected to the fresh air duct 10 and the regeneration air duct 20.

[0036] The fresh air duct 10 is used to supply fresh air, which is usually untreated outside air containing a certain humidity and temperature. The fresh air duct 10 has an air inlet 11 and an air outlet 12. Fresh air enters the fresh air duct 10 from the air inlet 11, and during the flow, it is dehumidified and temperature-regulated by the rotary dehumidification system 30 and the cooling system 40, and is then delivered from the air outlet 12.

[0037] The regeneration duct 20 is used to supply regeneration airflow, which is typically air with relatively high temperature and humidity after use. The regeneration duct 20 has a return air end 21 and an exhaust air end 22. The regeneration air enters the regeneration duct 20 from the return air end 21, and during its flow, it undergoes regeneration and temperature and humidity regulation through the rotary dehumidification system 30 and the refrigeration system 40, before being discharged from the exhaust air end 22.

[0038] The rotary dehumidification system 30 includes a primary dehumidification rotor 31, which comprises a first dehumidification zone 311, a second dehumidification zone 312, a first regeneration zone 313, and a second regeneration zone 314. The first and second dehumidification zones 311 and 312 are located on and connected to the fresh air duct 10, while the first and second regeneration zones 313 and 314 are located on and connected to the regeneration duct 20. Thus, the air in both the fresh air duct 10 and the regeneration duct 20 passes through the primary dehumidification rotor 31 twice, improving its dehumidification capacity and efficiency, and helping to lower the regeneration temperature of the rotary dehumidification system 30.

[0039] The rotary dehumidification system 30 also includes a fresh air fan 341 and a return air fan 342 for driving the gas. The fresh air fan 341 is installed on the fresh air duct 10 and close to the air inlet 11 of the fresh air duct 10, providing power for the fresh air to pass smoothly through the fresh air duct 10. The return air fan 342 is installed on the regeneration duct 20 and close to the return air end 21 of the regeneration duct 20, enabling the regeneration air to circulate in the regeneration duct 20 and providing airflow conditions for the regeneration duct 20.

[0040] Furthermore, the rotary dehumidification system 30 in this embodiment also includes a secondary dehumidification rotor 32. The secondary dehumidification rotor 32 includes a third dehumidification zone 321 disposed on the fresh air duct 10 and a third regeneration zone 322 disposed on the regeneration duct 20. The third dehumidification zone 321 is located between the air inlet 11 of the fresh air duct 10 and the air inlet of the first dehumidification zone 311, and the third regeneration zone 322 is located between the air outlet 22 of the regeneration duct 20 and the air outlet of the second regeneration zone 314.

[0041] Please refer to the following at the same time Figure 2 In this embodiment, the first dehumidification zone 311, the second dehumidification zone 312, the first regeneration zone 313, and the second regeneration zone 314 each occupy a 90° sector area. The first dehumidification zone 311 and the second dehumidification zone 312 are located at opposite corners, and the first regeneration zone 313 and the second regeneration zone 314 are located at opposite corners. The third dehumidification zone 321 and the third regeneration zone 322 each occupy a 180° sector area.

[0042] The fresh air duct 10 includes a first air duct 13 and a second air duct 14. The first air duct 13 and the second air duct 14 are connected in parallel, with both ends connected to the air inlet 11 of the fresh air duct 10 and the air inlet of the first dehumidification zone 311, respectively. The third dehumidification zone 321 is located on the first air duct 13. The regeneration air duct 20 includes a third air duct 23 and a fourth air duct 24. The third air duct 23 and the fourth air duct 24 are connected in parallel, with both ends connected to the exhaust end 22 of the regeneration air duct 20 and the air outlet of the second regeneration zone 314, respectively. The third regeneration zone 322 is located on the third air duct 23.

[0043] The rotary dehumidification system 30 also includes a first air valve 331, a second air valve 332, a third air valve 333, and a fourth air valve 334. The first air valve 331 is located on the first air duct 13, the second air valve 332 is located on the second air duct 14, the third air valve 333 is located on the third air duct 23, and the fourth air valve 334 is located on the fourth air duct 24. By controlling the opening and closing states of the first air valve 331, the second air valve 332, the third air valve 333, and the fourth air valve 334, the airflow direction in their respective air ducts can be controlled, thereby enabling switching between single-rotor and dual-rotor modes.

[0044] When higher dehumidification capacity is required, the first air valve 331 and the third air valve 333 can be opened, while the second air valve 332 and the fourth air valve 334 can be closed, enabling the secondary dehumidification rotor 32 to operate. In this mode, fresh air first undergoes preliminary dehumidification in the third dehumidification zone 321 before entering the primary dehumidification rotor 31. All regenerated air first passes through the primary dehumidification rotor 31 before entering the third regeneration zone 322, achieving dual-rotor operation and improving work efficiency.

[0045] When the humidity is low or the regeneration demand is low, the second air valve 332 and the fourth air valve 334 can be opened, while the first air valve 331 and the third air valve 333 can be closed, causing the secondary dehumidification rotor 32 to stop working. At this time, both fresh air and regenerated air only pass through the primary dehumidification rotor 31, realizing single-rotor mode operation, which can reduce unnecessary energy consumption.

[0046] By controlling the first air valve 331, the second air valve 332, the third air valve 333 and the fourth air valve 334 to switch between single-rotor mode and dual-rotor mode, the operational flexibility of the rotary dehumidifier can be effectively improved, and it can better adapt to different working conditions.

[0047] Furthermore, the rotary dehumidifier in this embodiment is also provided with a bypass ventilation duct 25, the two ends of which are respectively connected to the return air end 21 of the regeneration air duct 20 and the inlet of the first dehumidification zone 311. In this way, a portion of the air entering from the return air end 21 can directly enter the fresh air duct 10 through the bypass ventilation duct 25, mix with the fresh air in the fresh air duct 10, and then enter the first dehumidification zone 311 to participate in the dehumidification process again.

[0048] like Figure 1As shown, the refrigeration system includes a compressor 41, an air-side heat exchanger 421, and an outdoor-side heat exchanger 422. Both the air-side heat exchanger 421 and the outdoor-side heat exchanger 422 can switch between condenser and evaporator. The air-side heat exchanger 421 is installed on the fresh air duct 10 and connected to the air outlet of the second dehumidification zone 312. It can freely switch between cooling, heating, and off states, and the supply air temperature can be flexibly adjusted. The outdoor-side heat exchanger 422 can freely switch between heat absorption, heat release, and off states, realizing supplementary heating for the regeneration zone and supplementary cooling for the dehumidification zone.

[0049] The second dehumidification zone 312 has only one air supply side heat exchanger 421 between the air outlet and the air supply end 12, which helps to reduce wind resistance and improve the efficiency of air circulation.

[0050] Furthermore, the refrigeration system 40 also includes an outdoor fan 423, a first three-way valve 431, a second three-way valve 432, a first proportional valve 433, a second proportional valve 434, a check valve 435, an outdoor unit solenoid valve 441, several air supply side solenoid valves 442, an indoor solenoid valve 443, several electronic expansion valves 45, several condensers, several evaporators, several pressure regulating valves 48, an oil separator 491, a gas-liquid separator 492, an oil return capillary tube 493, and a liquid receiver 494.

[0051] The first three-way valve 431, the second three-way valve 432, and the outdoor unit solenoid valve 441 are used to control the switching of the outdoor heat exchanger 422 between heat absorption, heat release, and off states. Specifically, the first end of the first three-way valve 431 is connected to the outlet of the compressor 41 via a first proportional valve 433, a one-way valve 435, and an oil separator 491; the second end is connected to the inlet of the compressor 41 via the outdoor unit solenoid valve 441 and the gas-liquid separator 492; and the third end is connected to the first end of the outdoor heat exchanger 422. The first end of the second three-way valve 432 is connected to the inlet of the compressor 41 via a second proportional valve 434; the second end is directly connected to the second end of the outdoor heat exchanger 422; and the third end is connected to the second end of the outdoor heat exchanger 422 via an electronic expansion valve 45. The outdoor unit solenoid valve 441 is connected between the second end of the first three-way valve 431 and the inlet of the compressor 41.

[0052] Both the first proportional valve 433 and the second proportional valve 434 are three-way proportional control valves. The first end of the first proportional valve 433 is connected to the outlet of the compressor 41 via a check valve 435 and an oil separator 491. The second end is connected to the first three-way valve 431, and the third end is connected to the air-side heat exchanger 421 and several condensers. The first end of the second proportional valve 434 is connected to the air-side heat exchanger 421 and several evaporators. The second end is connected to the air-side heat exchanger 421 and several condensers via a liquid receiver 494, and the third end is connected to the second three-way valve 432.

[0053] Several air-supply side solenoid valves 442 are respectively connected to the air-supply side heat exchanger 421, used to control the air-supply side heat exchanger 421 to switch between heating, cooling and off states. Specifically, please also refer to... Figure 3 The air supply side solenoid valve 442 includes a first air supply side solenoid valve 4421, a second air supply side solenoid valve 4422, a third air supply side solenoid valve 4423, and a fourth air supply side solenoid valve 4424. The first air supply side solenoid valve 4421 is located between the first end of the air supply side heat exchanger 421 and the second end of the second proportional valve 434. The second air supply side solenoid valve 4422 is located between the second end of the air supply side heat exchanger 421 and the second end of the first proportional valve 433. The third air supply side solenoid valve 4423 is located between the first end of the air supply side heat exchanger 421 and the first end of the second proportional valve 434. The fourth air supply side solenoid valve 4424 is located between the second end of the air supply side heat exchanger 421 and the inlet of the compressor 41.

[0054] The condenser includes a first condenser 461, a second condenser 462, and a third condenser 463 arranged in parallel, all of which are mounted on the regeneration air duct 20. The first condenser 461 is connected to the air inlet of the first regeneration zone 313, the second condenser 462 is located between the first regeneration zone 313 and the second regeneration zone 314, and the third condenser 463 is located between the second regeneration zone 314 and the third regeneration zone 322. An indoor solenoid valve 443 is located between the third condenser 463 and the first proportional valve 433.

[0055] The evaporator includes a first evaporator 471, a second evaporator 472, and a third evaporator 473 arranged in parallel. All three evaporators are mounted on the fresh air duct 10. The first evaporator 471 is connected to the air inlet of the third dehumidification zone 321, the second evaporator 472 is located between the third dehumidification zone 321 and the first dehumidification zone 311, and the third evaporator 473 is located between the first dehumidification zone 311 and the second dehumidification zone 312.

[0056] Several electronic expansion valves 45 are respectively installed at the inlets of the first evaporator 471, the second evaporator 472, and the third evaporator 473. Several pressure regulating valves 48 are respectively installed at the outlets of the first evaporator 471, the second evaporator 472, and the third evaporator 473. When the air-side heat exchanger 421 is used as an evaporator, an electronic expansion valve 45 is also installed at its inlet, and a pressure regulating valve 48 is also installed at its outlet. The electronic expansion valves 45 can precisely control the refrigerant flow rate entering each evaporator, and the pressure regulating valves 48 can maintain the temperature in each evaporator within the required set range.

[0057] An oil separator 491 is installed at the outlet of the compressor 41 to promptly separate refrigerant gas and refrigeration oil at the outlet of the compressor 41. The two ends of the oil return capillary tube 493 are connected to the bottom of the oil separator 491 and the inlet of the compressor 41, respectively. The separated refrigeration oil flows back to the inlet of the compressor 41 through the oil return capillary tube 493, ensuring that the refrigeration oil discharged from the compressor 41 can return to the compressor 41 in a timely manner.

[0058] A gas-liquid separator 492 is installed at the inlet of the compressor 41 to separate the gas and liquid phases of refrigerant. The refrigerant gas separated by the gas-liquid separator 492 returns to the inlet of the compressor 41 through a U-shaped tube inside the gas-liquid separator 492. At the same time, the refrigerant oil at the bottom of the gas-liquid separator 492 is drawn away through the oil return hole of the U-shaped tube and returns to the suction pipe of the compressor 41, thereby ensuring that the refrigerant oil can flow back to the compressor 41 in a timely manner.

[0059] The receiver 494 is located between each condenser and the second proportional valve 434, and can control the refrigerant flow in the refrigeration system 40 according to the actual needs under different operating conditions. For example, the receiver 494 can store excess refrigerant when the refrigerant demand is low and release refrigerant when the demand is high, ensuring the stable operation of the rotary dehumidifier and thus achieving high-precision control of temperature and humidity.

[0060] The rotary dehumidification system 30 of this application has a single-rotor mode and a dual-rotor mode. The first air valve 331, the second air valve 332, the third air valve 333 and the fourth air valve 334 can be adjusted according to the environment and user needs to switch modes.

[0061] In single-rotor mode, fresh air, driven by fresh air fan 341, directly passes through second air valve 332 to the second evaporator 472 for pre-cooling and dehumidification. The pre-cooled and dehumidified fresh air mixes with a portion of the return air driven by return air fan 342 and enters the first dehumidification zone 311 of the primary dehumidification rotor 31 for initial dehumidification. After leaving the first dehumidification zone 311, it enters the third evaporator 473 for further cooling. Then, it undergoes dehumidification in the second dehumidification zone 312 of the primary dehumidification rotor 31 before being delivered to the room via the supply air heat exchanger 421. The remaining return air serves as regeneration air to restore the rotor's dehumidification capacity: a portion of the return air driven by return air fan 342 is heated by the first condenser 461 to regenerate the first regeneration zone 313 of the primary dehumidification rotor 31, and then reheated by the second condenser 462 to regenerate the second regeneration zone 314 of the primary dehumidification rotor 31. Finally, it is delivered outdoors via the fourth air valve 334.

[0062] In this mode, the electronic expansion valve 45 at the inlet of the first evaporator 471 is closed, causing the first evaporator 471 to stop working. The indoor solenoid valve 443 is closed, causing the third condenser 463 to stop working. In addition, when the outdoor fresh air temperature and dew point temperature introduced in winter are low enough, the second evaporator 472 does not need to be turned on, and in this case, the electronic expansion valve 45 at the inlet of the second evaporator 472 is closed.

[0063] In dual-rotor mode, fresh air, driven by fresh air fan 341, passes through first air valve 331 to first evaporator 471 for pre-cooling and dehumidification. After pre-cooling and dehumidification, the fresh air enters the third dehumidification zone 321 of secondary dehumidification rotor 32 for further dehumidification, and then reaches the second evaporator 472 for cooling. The cooled fresh air mixes with a portion of return air driven by return air fan 342 and enters the first dehumidification zone 311 of primary dehumidification rotor 31 for dehumidification. After leaving the first dehumidification zone 311, it enters the third evaporator 473 for further cooling. Then, it passes through the second dehumidification zone 312 of primary dehumidification rotor 31 for dehumidification, and is then delivered to the room via supply air heat exchanger 421. The remaining portion of return air is used as regeneration air to restore the dehumidification capacity of the dehumidifier: the portion of return air driven by the return air fan 342 is heated by the first condenser 461 and regenerated in the first regeneration zone 313 of the first-stage dehumidifier ...

[0064] In this mode, when the outdoor fresh air temperature and dew point temperature introduced in winter are low enough, the first evaporator 471 does not need to be turned on, and the electronic expansion valve 45 at the inlet of the first evaporator 471 is closed.

[0065] The air-supply side heat exchanger 421 of this application has heating, cooling, and off states. When the first air-supply side solenoid valve 4421 and the second air-supply side solenoid valve 4422 are open, and the third air-supply side solenoid valve 4423 and the fourth air-supply side solenoid valve 4424 are closed, the air-supply side heat exchanger 421 acts as a condenser to heat the air supply. When the first air-supply side solenoid valve 4421 and the second air-supply side solenoid valve 4422 are closed, and the third air-supply side solenoid valve 4423 and the fourth air-supply side solenoid valve 4424 are open, the air-supply side heat exchanger 421 acts as an evaporator to cool the air supply. When all four solenoid valves are closed, the air-supply side heat exchanger 421 stops working.

[0066] The outdoor heat exchanger 422 of this application has heat absorption, heat release, and closed states. When the outdoor heat exchanger 422 is in the heat absorption state, the high-pressure liquid refrigerant in the receiver 494 is divided into two paths by the second proportional valve 434. The portion of liquid refrigerant entering the outdoor side passes through the second three-way valve 432 to the electronic expansion valve 45 for throttling and pressure reduction, and then reaches the outdoor heat exchanger 422. With the help of the outdoor fan 423, it evaporates and absorbs heat to become superheated refrigerant gas. Afterwards, this portion of refrigerant returns to the inlet of the compressor 41 through the first three-way valve 431 and the outdoor unit solenoid valve 441.

[0067] When the outdoor heat exchanger 422 is in the heat release state, the high-temperature and high-pressure gas discharged from the compressor 41 outlet passes through the first proportional valve 433, and a portion of the gas enters the outdoor heat exchanger 422 through the first three-way valve 431, where it condenses and releases heat with the help of the outdoor fan 423. When the outdoor heat exchanger 422 is in the closed state, the refrigerant cannot enter or leave the outdoor heat exchanger 422 by adjusting the first three-way valve 431, the second three-way valve 432, and the outdoor unit solenoid valve 441.

[0068] As described above, by adjusting the four air valves, the rotary dehumidification system 30 can be configured to operate in either a single-rotor or a single-rotor mode. Adjusting the valves on the supply air side heat exchanger 421 allows for three modes: cooling, heating, and off. Adjusting the valves on the outdoor side heat exchanger 422 allows for three modes: heat absorption, heat release, and off. By adjusting these three components, the rotary dehumidification device of this application can achieve a total of 2×3×3=18 operating modes, demonstrating high flexibility and strong adjustability, making it suitable for various operating conditions.

[0069] like Figure 3 As shown, the example uses a combination of a single rotor, a supply air heat exchanger 421 for cooling, and an outdoor heat exchanger 422 for heat absorption.

[0070] Fresh air, driven by fresh air fan 341, passes through second air valve 332 to the second evaporator 472 for cooling and dehumidification. The cooled and dehumidified fresh air mixes with a portion of the return air driven by return air fan 342, enters the first dehumidification zone 311 for further dehumidification, and then leaves the first dehumidification zone 311 before being sent to the third evaporator 473 for further cooling. It then undergoes dehumidification in the second dehumidification zone 312, and is further cooled by the supply air side heat exchanger 421 before being sent indoors.

[0071] The remaining return air is used as regenerated air to restore the dehumidification capacity of the rotary dehumidifier: the return air driven by the return air fan 342 is heated by the first condenser 461 to regenerate the first regeneration zone 313, and then heated again by the second condenser 462 to regenerate the second regeneration zone 314, and finally sent to the outside through the fourth air valve 334.

[0072] The first air supply side solenoid valve 4421 and the second air supply side solenoid valve 4422 are closed, while the third air supply side solenoid valve 4423 and the fourth air supply side solenoid valve 4424 are open, and the air supply side heat exchanger 421 acts as an evaporator to supply air for cooling.

[0073] By adjusting the first three-way valve 431 and the second three-way valve 432, the outdoor unit heat exchanger 422 acts as an evaporator to absorb heat from the outdoor side. Specifically, the high-temperature, high-pressure refrigerant gas from the compressor 41 outlet passes through the oil separator 491, the one-way valve 435, and the first proportional valve 433 before entering the first condenser 461 and the second condenser 462, respectively. The high-pressure refrigerant liquid, after condensation and heat release, first enters the liquid receiver 494, and then is divided into two paths by the second proportional valve 434. One path of refrigerant enters several electronic expansion valves 45 for throttling, then enters the second evaporator 472, the third evaporator 473, and the air-side heat exchanger 421 to evaporate and absorb heat until it becomes superheated refrigerant gas. This gas then passes through several pressure regulating valves 48 into the gas-liquid separator 492, and finally returns to the compressor 41 inlet. Another refrigerant path passes through the second three-way valve 432, and after being throttled by the electronic expansion valve 45, it enters the outdoor heat exchanger 422 for evaporation and heat absorption. Then, it passes through the first three-way valve 431 and the outdoor unit solenoid valve 441 to enter the gas-liquid separator 492, and finally returns to the inlet of the compressor 41.

[0074] like Figure 4 As shown, the example is a combination of two rotating wheels, with the air supply side heat exchanger 421 providing heat and the outdoor side heat exchanger 422 being shut down.

[0075] Fresh air, driven by a fresh air fan 341, passes through a first air valve 331 to the first evaporator 471 for pre-cooling and dehumidification. After pre-cooling and dehumidification, the fresh air enters the third dehumidification zone 321 for further dehumidification, and then reaches the second evaporator 472 for cooling. The cooled fresh air mixes with a portion of the return air driven by the return air fan 342 and enters the first dehumidification zone 311 for initial dehumidification. After leaving the first dehumidification zone 311, it is sent to the third evaporator 473 for further cooling, then passes through the second dehumidification zone 312 for dehumidification, and finally, after being heated by the supply air side heat exchanger 421, is delivered to the room.

[0076] The remaining portion of return air is used as regenerated air to restore the dehumidification capacity of the rotor: the portion of return air driven by the return air fan 342 is heated by the first condenser 461 and regenerated in the first regeneration zone 313. It is then reheated by the second condenser 462 and regenerated in the second regeneration zone 314. Then it reaches the third condenser 463 for a third heating via the third air valve 333. Finally, it is sent outdoors after regenerating the rotor in the third regeneration zone 322.

[0077] The first air supply side solenoid valve 4421 and the second air supply side solenoid valve 4422 are open, the third air supply side solenoid valve 4423 and the fourth air supply side solenoid valve 4424 are closed, and the air supply side heat exchanger 421 acts as a condenser to supply heat to the air supply.

[0078] By adjusting the first three-way valve 431 and the second three-way valve 432, the refrigerant is prevented from entering or leaving the outdoor unit heat exchanger 422. Specifically, the high-temperature, high-pressure refrigerant gas from the compressor 41 outlet passes through the oil separator 491, the one-way valve 435, and the first proportional valve 433 before entering the first condenser 461, the second condenser 462, the third condenser 463, and the air-side heat exchanger 421, respectively. The high-pressure refrigerant liquid after condensation and heat release first enters the liquid receiver 494, then passes through the second proportional valve 434 and enters several electronic expansion valves 45 for throttling, before entering the first evaporator 471, the second evaporator 472, and the third evaporator 473 to evaporate and absorb heat until it becomes superheated. It then passes through several pressure regulating valves 48 and enters the gas-liquid separator 492, and finally returns to the compressor 41 inlet.

[0079] The rotary dehumidifier of this application divides the primary dehumidification rotor 31 into four zones, requiring both dehumidified air and regenerated air to pass through the primary dehumidification rotor 31 twice, thereby improving the working capacity and efficiency of the primary dehumidification rotor 31. Furthermore, by installing a supply air side heat exchanger 421 at the air outlet of the second dehumidification zone 312, the supply air side heat exchanger 421 can be controlled to heat or cool the dehumidified air according to actual needs, achieving flexible adjustment of the supply air temperature. This allows for more efficient coupling between the rotary dehumidification system 30 and the refrigeration system 40, improving the energy utilization efficiency of the rotary dehumidifier. It offers advantages such as high-efficiency dehumidification, low regeneration temperature, multi-mode switching, high temperature and humidity control accuracy, and energy saving.

[0080] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A rotary dehumidifier, characterized in that, The system includes a fresh air duct, a regeneration duct, a rotary dehumidification system, and a refrigeration system. The rotary dehumidification system includes a primary dehumidification rotor, which comprises a first dehumidification zone, a second dehumidification zone, a first regeneration zone, and a second regeneration zone. The first and second dehumidification zones are connected through the fresh air duct, and the first and second regeneration zones are connected through the regeneration duct. The refrigeration system includes a compressor and a supply air heat exchanger. The supply air heat exchanger is mounted on the fresh air duct and connected to the air outlet of the second dehumidification zone.

2. The rotary dehumidifier according to claim 1, characterized in that, The rotary dehumidification system further includes a secondary dehumidification rotor, which includes a third dehumidification zone disposed on the fresh air duct and a third regeneration zone disposed on the regeneration duct. The third dehumidification zone is located between the air inlet of the fresh air duct and the air inlet of the first dehumidification zone, and the third regeneration zone is located between the air outlet of the regeneration duct and the air outlet of the second regeneration zone.

3. The rotary dehumidifier according to claim 2, characterized in that, The fresh air duct includes a first duct and a second duct connected in parallel. Both ends of the first duct and the second duct are respectively connected to the air inlet of the fresh air duct and the air inlet of the first dehumidification zone. The rotary dehumidification system also includes a first air valve and a second air valve. The first air valve and the third dehumidification zone are arranged on the first duct, and the second air valve is arranged on the second duct.

4. The rotary dehumidifier according to claim 2, characterized in that, The regeneration air duct includes a third air duct and a fourth air duct connected in parallel. Both ends of the third air duct and the fourth air duct are respectively connected to the exhaust end of the regeneration air duct and the air outlet of the second regeneration zone. The rotary dehumidification system also includes a third air valve and a fourth air valve. The third air valve and the third regeneration zone are arranged on the third air duct, and the fourth air valve is arranged on the fourth air duct.

5. The rotary dehumidifier according to claim 1, characterized in that, The rotary dehumidifier is also provided with a bypass ventilation duct, the two ends of which are respectively connected to the return air end of the regeneration air duct and the inlet of the first dehumidification zone.

6. The rotary dehumidifier according to claim 1, characterized in that, The refrigeration system also includes an outdoor heat exchanger, a first three-way valve, a second three-way valve, and an outdoor unit solenoid valve. The first three-way valve, the second three-way valve, and the outdoor unit solenoid valve are used to control the outdoor heat exchanger to switch between heat absorption, heat release, and off states.

7. The rotary dehumidifier according to claim 6, characterized in that, The first end of the first three-way valve is connected to the outlet of the compressor, the second end of the first three-way valve is connected to the inlet of the compressor, and the third end of the first three-way valve is connected to the first end of the outdoor heat exchanger; the first end of the second three-way valve is connected to the inlet of the compressor, the second end of the second three-way valve is directly connected to the second end of the outdoor heat exchanger, and the third end of the second three-way valve is connected to the second end of the outdoor heat exchanger through an electronic expansion valve; the outdoor unit solenoid valve is connected between the second end of the first three-way valve and the inlet of the compressor.

8. The rotary dehumidifier according to claim 1, characterized in that, The refrigeration system also includes several air-side solenoid valves connected to the air-side heat exchanger. The air-side solenoid valves are used to control the air-side heat exchanger to switch between heating, cooling and off states.

9. The rotary dehumidifier according to claim 2, characterized in that, The refrigeration system further includes a first condenser, a second condenser, and a third condenser arranged in parallel. The first condenser, the second condenser, and the third condenser are all located on the regeneration air duct. The first condenser is connected to the air inlet of the first regeneration zone, the second condenser is located between the first regeneration zone and the second regeneration zone, and the third condenser is located between the second regeneration zone and the third regeneration zone.

10. The rotary dehumidifier according to claim 2, characterized in that, The refrigeration system further includes a first evaporator, a second evaporator, and a third evaporator arranged in parallel. The first evaporator, the second evaporator, and the third evaporator are all located on the fresh air duct. The first evaporator is connected to the air inlet of the third dehumidification zone. The second evaporator is located between the third dehumidification zone and the first dehumidification zone. The third evaporator is located between the first dehumidification zone and the second dehumidification zone.

11. The rotary dehumidifier according to claim 10, characterized in that, The refrigeration system also includes several electronic expansion valves and several pressure regulating valves. The electronic expansion valves are respectively installed at the inlets of the first evaporator, the second evaporator and the third evaporator, and the pressure regulating valves are respectively installed at the outlets of the first evaporator, the second evaporator and the third evaporator.

12. The rotary dehumidifier according to claim 1, characterized in that, The refrigeration system also includes an oil separator, a gas-liquid separator, and an oil return capillary tube. The oil separator is located at the outlet of the compressor, the gas-liquid separator is located at the inlet of the compressor, and the two ends of the oil return capillary tube are respectively connected to the bottom of the oil separator and the inlet of the compressor.

13. The rotary dehumidifier according to claim 1, characterized in that, The rotary dehumidification system also includes a fresh air fan and a return air fan for driving the gas. The fresh air fan is installed on the fresh air duct and close to the air inlet of the fresh air duct, and the return air fan is installed on the regeneration duct and close to the air return of the regeneration duct.

14. The rotary dehumidifier according to claim 1, characterized in that, The first dehumidification zone, the second dehumidification zone, the first regeneration zone, and the second regeneration zone each occupy a 90° sector area, with the first dehumidification zone and the second dehumidification zone located at opposite corners, and the first regeneration zone and the second regeneration zone located at opposite corners.

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