CN118328529B - Energy-saving rotary dehumidification system and control method - Google Patents
Energy-saving rotary dehumidification system and control methodInfo
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- CN118328529B CN118328529B CN202410470240.1A CN202410470240A CN118328529B CN 118328529 B CN118328529 B CN 118328529B CN 202410470240 A CN202410470240 A CN 202410470240A CN 118328529 B CN118328529 B CN 118328529B
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- dehumidification
- regeneration
- fresh air
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- condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Drying Of Gases (AREA)
Abstract
The invention is suitable for the field of air conditioners, and discloses an energy-saving rotating wheel dehumidification system and a control method, wherein the system comprises a fresh air duct, a cooling duct, a regeneration duct, a rotating wheel dehumidification unit, a coupling heat pump unit, a deep dehumidification unit, a water inlet pipe and a water outlet pipe; the deep dehumidification unit comprises a third condenser, a third compressor, a third evaporator and a fourth throttling device, wherein the third condenser, the third compressor, the third evaporator and the fourth throttling device are sequentially connected end to end, a water inlet of the third condenser is connected with a water inlet pipe, a water outlet of the third condenser is connected with a water outlet pipe, the system adopts a multistage direct expansion coupling steaming combined deep refrigeration sectional composite dehumidification technology, the refrigeration dehumidification and adsorption dehumidification proportion is changed, the refrigeration dehumidification and adsorption dehumidification treatment proportion is improved to be more than 6:1 from the traditional ratio less than 3:1, more water is removed before entering the first dehumidification wheel, and the system dehumidification is enabled to be more energy-saving.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an energy-saving rotating wheel dehumidification system and a control method.
Background
The traditional rotary dehumidifier adopts solid silica gel or molecular sieve to adsorb a material wheel core, absorbs water molecules in a treatment area, and needs high-temperature desorption of about 130 ℃ after transferring to an irregular generation area, so that a large amount of high-grade energy sources are needed to be consumed, and the energy consumption is large.
The dehumidification process of the rotary dehumidifier is a system engineering, generally, the front fresh air adopts refrigeration condensation dehumidification (the relative humidity is 30% -20%), the fresh air after refrigeration dehumidification is mixed with primary return air, and then the primary wheel core is adopted to carry out adsorption dehumidification to a low dew point region (the dew point temperature is minus 10 ℃ to minus 40 ℃), if the fresh air is required to be processed to an ultralow dew point region (the dew point temperature is minus 40 ℃ to minus 70 ℃), the secondary wheel core is required to carry out ultralow humidity adsorption, and the primary regeneration desorption and the secondary regeneration desorption are corresponding to the primary wheel core and the secondary wheel core.
The traditional rotary dehumidifier adopts the technologies and methods of heat recovery, energy saving, low-grade heat energy regeneration, preheating, increasing the volume of a unit air volume wheel core and the like, and the technologies and methods can bring about energy saving effects, but if the treatment proportion of refrigeration dehumidification and adsorption dehumidification is not changed, the energy consumption proportion of the regeneration of the primary wheel core and the secondary wheel core is larger (more than 65%), and even if the energy saving technology is used, the energy saving effect is limited and is generally within 20%.
Disclosure of Invention
The first object of the present invention is to provide an energy-saving rotary dehumidifier system, which aims to solve the technical problem that the energy-saving effect of the traditional rotary dehumidifier is limited.
In order to achieve the above purpose, the invention provides the following scheme:
An energy-saving rotary dehumidification system comprises a fresh air duct, a cooling duct, a regeneration duct, a rotary dehumidification unit, a coupling heat pump unit, a deep dehumidification unit, a water inlet pipe and a water outlet pipe;
the rotating wheel dehumidification unit comprises a first dehumidification wheel, a second dehumidification wheel, a surface cooler, an air supercharging device, a first evaporator, a temperature-adjusting heat exchanger, a temperature-adjusting heating device, a first condenser, a first compressor, a first throttling device, a second regeneration heating device, a first regeneration heating device and a regeneration fan, wherein the first dehumidification wheel and the second dehumidification wheel are respectively and simultaneously arranged on the fresh air duct and the regeneration air duct;
The coupling heat pump unit comprises a first control valve, a second control valve, a first heat exchanger, a second throttling device, a second evaporator, a second compressor, a second condenser, a first dehumidifying wheel and a third throttling device which are sequentially connected end to end, wherein the first control valve is connected in parallel with two sides of the second throttling device, and the second control valve is connected in parallel with two sides of the third throttling device;
the deep dehumidification unit comprises a third condenser, a third compressor, a third evaporator and a fourth throttling device which are sequentially connected end to end, a water inlet of the third condenser is connected with the water inlet pipe, and a water outlet of the third condenser is connected with the water outlet pipe;
The first heat exchanger, the surface cooler, the third condenser, the first dehumidification wheel the air supercharging device, the first evaporator, the second dehumidification wheel the temperature-adjusting heat exchanger with the temperature-adjusting heating device sets gradually on the fresh air duct, the export in fresh air duct is used for being connected with clean drying room, the water inlet of surface cooler with the water inlet of temperature-adjusting heat exchanger respectively with inlet tube coupling, the delivery port of surface cooler with the delivery port of temperature-adjusting heat exchanger respectively with outlet coupling, first condenser first compressor the second grade regeneration heating device the second condenser the first grade regeneration heating device the second evaporator with the regeneration fan sets gradually along the regeneration direction on the fresh air duct, first compressor first condenser the first throttle device with first evaporator head-to-tail connects gradually, one end in the cooling air duct with be located between air duct and the first evaporator and the second supercharging device, the fresh air duct is connected with the regeneration fan through the first compressor.
Preferably, the coupled heat pump unit further comprises a first gas-liquid separator, the deep dehumidification unit further comprises a second gas-liquid separator, the first gas-liquid separator is arranged between the second evaporator and the second compressor, and the second gas-liquid separator is arranged between the third compressor and the third evaporator.
Preferably, a water inlet of the surface cooler, a water inlet of the temperature-adjusting heat exchanger and a water inlet of the third condenser are respectively provided with a proportional regulating valve.
Preferably, the device further comprises a fresh air valve, a fresh air exhaust valve and a regeneration exhaust valve, wherein the fresh air valve is arranged at the inlet of the fresh air duct, the fresh air exhaust valve is arranged at the outlet of the fresh air duct, and the regeneration exhaust valve is arranged at the outlet of the regeneration duct.
Preferably, a primary filter is arranged between the fresh air valve and the first heat exchanger, and a middle-efficiency filter is arranged between the temperature-adjusting heat exchanger and the second dehumidifying wheel.
Preferably, the air conditioner further comprises an air return pipe connected with the fresh air duct, wherein the air return pipe is located between the first dehumidifying wheel and the air supercharging device, one end, away from the fresh air duct, of the air return pipe is used for being connected with a clean drying room, and an air return valve is arranged on the air return pipe.
A second object of the present invention is to provide a control method of an energy-saving type wheel dehumidification system, characterized in that the control method is used for realizing the operation control of the energy-saving type wheel dehumidification system as described above, the control method comprising:
acquiring the temperature of an environmental fresh air dry bulb and the moisture content of the environmental fresh air in real time;
When the temperature of the ambient fresh air dry bulb is more than 9 ℃ or the moisture content of the ambient fresh air is more than 6.8g/kg, the energy-saving rotating wheel dehumidification system is switched to a summer operation mode, the coupling heat pump unit is controlled to be switched to a refrigeration mode, the deep dehumidification unit is started, when the water quantity of the water inlet pipe and the water outlet pipe and the opening of the air pressurizing device are detected, the third condenser and the fourth throttling device are started, the third compressor is started, the fourth throttling device aims at controlling the temperature of the air outlet side of the third evaporator, and the lowest operation pressure difference between the evaporation side and the condensation side is ensured by controlling the condensation temperature of the third condenser;
When the temperature of the ambient fresh air dry bulb is less than or equal to 9 ℃ or the moisture content of the ambient fresh air is less than or equal to 6.8g/kg, the energy-saving rotating wheel dehumidification system is switched to a winter operation mode, the coupled heat pump unit is controlled to be switched to a heating mode, and the deep dehumidification unit does not operate.
Preferably, when the energy-saving rotating wheel dehumidification system is switched to a summer operation mode, the proportional control valve at the water inlet of the third condenser is opened at 10% of a preset opening degree, and the fourth throttling device is opened at 30% of the preset opening degree.
Preferably, when the coupled heat pump unit is controlled to switch to a refrigeration mode, the first heat exchanger enters an evaporation refrigeration mode, the second evaporator stops running, the second control valve and the second throttling device are closed, the first control valve, the third throttling device and the second compressor are opened, the third throttling device performs PID adjustment according to a control target of a first preset temperature and a preset relative humidity value, the second compressor transfers heat of a treatment area to the second condenser to be released to a regeneration side for regeneration heating, the first-stage regeneration heating device is used for regeneration temperature compensation and performs PID adjustment according to the out-of-air-humidity degree after the first dehumidification wheel, when the coupled heat pump unit is controlled to switch to the heating mode, the surface cooler stops running, the first control valve and the third throttling device are closed, the second control valve, the second throttling device and the second compressor are opened, the first-stage regeneration heating device is used for regeneration temperature compensation according to a control target of a second preset temperature, and performs PID adjustment according to the out-of-air-humidity degree after the first dehumidification wheel.
Preferably, the coupled heat pump unit is controlled to be switched into a heating mode, the surface air cooler stops running, the first control valve and the third throttling device are closed, the second control valve, the second throttling device and the second compressor are opened, the second throttling device is opened at 10% of a preset opening degree, the second throttling device performs PID (proportion integration differentiation) adjustment according to a control target of a second preset temperature, and the first-stage regeneration heating device is used for regenerating temperature compensation and performing PID adjustment according to the degree of wind-damp of the first dehumidification wheel.
The energy-saving rotating wheel dehumidification system comprises a fresh air duct, a cooling duct, a regeneration duct, a rotating wheel dehumidification unit, a coupling heat pump unit and a deep dehumidification unit, wherein a multistage direct expansion coupling steaming combined deep refrigeration sectional composite dehumidification technology is adopted, the proportion of refrigeration dehumidification to adsorption dehumidification is changed, the fresh air moisture content is 30.7g/kg to 4.5g/kg, then the fresh air moisture content is treated to be low dew point and ultra-low dew point by a first dehumidification wheel and a second dehumidification wheel through adsorption dehumidification, the treatment proportion of refrigeration dehumidification and adsorption dehumidification is improved to be more than 6:1 from the traditional ratio of less than 3:1, and more moisture is removed before entering the first dehumidification wheel, so that the system dehumidification is more energy-saving.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an energy-saving rotary dehumidification system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a coupled heat pump unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a deep dehumidification unit according to an embodiment of the present disclosure;
Fig. 4 is a flowchart of a control method of an energy-saving type rotating wheel dehumidification system according to an embodiment of the present invention.
Reference numerals illustrate:
1. Fresh air valve, 2, primary filter, 3, first control valve, 4, second throttling device, 5, first heat exchanger, 6, surface cooler, 7, water outlet pipe, 8, water inlet pipe, 9, proportion adjusting valve, 12, first dehumidifying wheel, 13, first rotating wheel driving motor, 14, return air valve, 15, return air pipe, 16, air pressurizing device, 17, cooling air channel, 18, first evaporator, 19, second dehumidifying wheel, 20, second rotating wheel driving motor, 21, middle effect filter, 22, temperature adjusting heat exchanger, 24, temperature adjusting heating device, 25, clean drying room, 26, first condenser, 27, first compressor, 28, second regenerating heating device, 29, first throttling device, 30, second condenser, 31, first regenerating heating device, 32, second compressor, 33, third throttling device, 34, second control valve, 35, second evaporator, 36, regenerating fan, 37, regenerating air valve, 38, valve, 39, first air-liquid separator, 42, third condenser, 43, third condenser, third air channel, third condenser, 43, third air channel, fourth air channel coupling unit, 40, fresh air channel, 40, fourth air channel coupling unit, and 100.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present invention) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
As shown in fig. 1 to 3, an energy-saving type rotating wheel dehumidifying system according to an embodiment of the present invention is shown.
Referring to fig. 1 to 3, the energy-saving rotary dehumidification system of the embodiment of the invention comprises a fresh air duct 300, a cooling air duct 17, a regeneration air duct 400, a rotary dehumidification unit, a coupled heat pump unit 100, a deep dehumidification unit 200, a water inlet pipe 8 and a water outlet pipe 7;
The rotating wheel dehumidifying unit comprises a first dehumidifying wheel 12, a second dehumidifying wheel 19, a surface cooler 6, an air supercharging device 16, a first evaporator 18, a temperature-regulating heat exchanger 22, a temperature-regulating heating device 24, a first condenser 26, a first compressor 27, a first throttling device 29, a second-stage regeneration heating device 28, a first-stage regeneration heating device 31 and a regeneration fan 36, wherein the first dehumidifying wheel 12 and the second dehumidifying wheel 19 are respectively and simultaneously arranged on a fresh air channel 300 and a regeneration air channel 400;
The coupled heat pump unit 100 comprises a first heat exchanger 5, a first control valve 3, a second control valve 34, a second throttling device 4, a third throttling device 33, a second evaporator 35, a second compressor 32 and a second condenser 30, wherein the first heat exchanger 5, the second throttling device 4, the second evaporator 35, the second compressor 32, the second condenser 30, the first dehumidifying wheel 12 and the third throttling device 33 are sequentially connected end to end, the first control valve 3 is connected in parallel to both sides of the second throttling device 4, and the second control valve 34 is connected in parallel to both sides of the third throttling device 33;
The deep dehumidification unit 200 comprises a third condenser 42, a third compressor 43, a third evaporator 45 and a fourth throttling device 46, wherein the third condenser 42, the third compressor 43, the third evaporator 45 and the fourth throttling device 46 are sequentially connected end to end, a water inlet of the third condenser 42 is connected with the water inlet pipe 8, and a water outlet of the third condenser 42 is connected with the water outlet pipe 7;
The first heat exchanger 5, the surface cooler 6, the third condenser 42, the first dehumidifying wheel 12, the air supercharging device 16, the first evaporator 18, the second dehumidifying wheel 19, the temperature-regulating heat exchanger 22 and the temperature-regulating heating device 24 are sequentially arranged on the fresh air duct 300, the outlet of the fresh air duct 300 is used for being connected with the clean drying room 25, the water inlet of the surface cooler 6 and the water inlet of the temperature-regulating heat exchanger 22 are respectively connected with the water inlet pipe 8, the water outlet of the surface cooler 6 and the water outlet of the temperature-regulating heat exchanger 22 are respectively connected with the water outlet pipe 7, the first condenser 26, the first compressor 27, the second-stage regenerative heating device 28, the second condenser 30, the first-stage regenerative heating device 31, the second evaporator 35 and the regenerative fan 36 are sequentially arranged on the regenerative air duct 400 along the regeneration direction, one end of the cooling air duct 17 is connected with the fresh air duct 300, the air supercharging device 16 is positioned between the first evaporator 18, and the other end of the cooling air duct 17 is connected with the regenerative air duct 400 through the second dehumidifying wheel 19.
In this embodiment, the first heat exchanger 5 is an evaporator, and in other embodiments, the first heat exchanger 5 may be a condenser.
In this embodiment, the air booster device 16 is a booster fan for boosting the lift aerodynamic force.
In the present embodiment, the first control valve 3, the second control valve 34, and the third control valve 53 are all proportional adjustment ball valves.
In this embodiment, the first desiccant wheel 12 is connected to a first-stage wheel drive motor 13, and the second desiccant wheel 19 is connected to a second-stage wheel drive motor 20, and the first-stage wheel drive motor 13 is used to drive the first desiccant wheel 12 to rotate, so as to adsorb water vapor in the air. The secondary runner driving motor 20 is used for driving the second dehumidifying wheel 19 to rotate, so that water vapor in the air is adsorbed, and the dehumidifying effect is further improved.
In the present embodiment, the third condenser 42 is a water-cooled condenser.
In this embodiment, the deep dehumidification unit 200 may cool the fresh air passing through the surface cooler 6 to a preset temperature and a preset humidity (for example, when in a summer operation mode, the deep dehumidification unit 200 operates to process the fresh air to a relative humidity of 3 ℃ and 95%), and at the same time, energy reuse in the heat pump cycle may be achieved, energy efficiency of the system is improved, and energy consumption cost is reduced.
In this embodiment, when the energy-saving type rotating wheel dehumidification system is switched to the summer operation mode, the coupled heat pump unit 100 is controlled to be switched to the refrigeration mode, and heat is transferred from the treatment area of the first dehumidification wheel 12 to the regeneration area of the first dehumidification wheel 12 through the coupled heat pump unit 100, so that local temperature control during summer operation is realized, cold and heat are balanced, and bidirectional energy is used to save energy to the maximum extent.
In this embodiment, when the coupled heat pump unit 100 is controlled to switch to the cooling mode, the first heat exchanger 5 enters the evaporation cooling mode, the second evaporator 35 stops operating, the second control valve 34 and the second throttling device 4 are closed, the first control valve 3 and the third throttling device 33 are opened, then the second compressor 32 is opened, the third throttling device 33 performs PID adjustment according to the control target of 17 ℃ and the relative humidity of 95%, the second compressor 32 continuously transfers the heat of the treatment area to the second condenser 30 to be released to the regeneration side for regeneration heating, the first-stage regeneration heating device 31 is used for regeneration temperature compensation, and PID adjustment is performed according to the degree of wind-damp after the first dehumidifying wheel 12.
Specifically, when the energy-saving rotary dehumidification system is switched to a summer operation mode, the first heat exchanger 5 operates an evaporation refrigeration function to process fresh air to 17 ℃ per 95%, the surface cooler 6 processes fresh air to 9 ℃ per 95%, the deep dehumidification unit 200 operates to continuously process fresh air to 3 ℃ per 95%, the fresh air enters the first dehumidification wheel 12 to be adsorbed and dehumidified, is mixed with return air of the clean drying room 25, is pressurized and lifted by the air pressurizing device 16 to be aerodynamic force, a small part of low-humidity low-temperature air is separated to enter the cooling air channel 17, enters the regeneration air channel 400 after heat is recovered in the supercooling region of the second dehumidification wheel 19, and flows mostly along the channel of the treatment region, enters the treatment region of the second dehumidification wheel 19 to be adsorbed and dehumidified again after temperature control adjustment by the first evaporator 18, reaches a target dry bulb temperature set in the system, finally reaches the temperature set by the system, the cleanliness and the ultra-low dew point, and is sent to the clean drying room 25. The regeneration air passing through the supercooling region of the second dehumidifying wheel 19 is heated after being transferred to the first condenser 26 through the first compressor 27 after being transferred to the first condenser 26 through the heat absorbed by the first evaporator 18, the regeneration temperature value of the second dehumidifying wheel 19 is controlled by combining the second-stage regeneration heating device 28, the regeneration temperature is guaranteed to be accurate, the humidity is adjustable according to the system setting, the fresh air moisture content of the regeneration air environment coming out of the second dehumidifying wheel 19 is still at a low value and is continuously used for primary regeneration, the regeneration air coming out of the second dehumidifying wheel 19 is heated after being transferred through the second compressor 32 preferentially through the second condenser 30 after being transferred through the heat absorbed by the first heat exchanger 5, the regeneration temperature value of the first dehumidifying wheel 12 is controlled by combining the first-stage regeneration heating device 31, the regeneration temperature value of the first dehumidifying wheel 12 is guaranteed to be accurate, the humidity is adjustable according to the dew point setting after the first dehumidifying wheel 12 is set, the regeneration air coming out of the first dehumidifying wheel 12 is discharged outdoors through the regeneration fan 36, and the desorption of water from the treatment region is completely absorbed and transferred to the regeneration region is released. The second evaporator 35 is not in use in the summer mode of operation.
When the energy-saving rotating wheel dehumidification system is switched to a winter operation mode, the coupling heat pump unit 100 is controlled to be switched to a heating mode, heat is recovered and transferred from a regeneration area of the first dehumidification wheel 12 to a treatment area of the first dehumidification wheel 12 and before air is taken in by the first dehumidification wheel 12 of the regeneration area through the coupling heat pump unit 100, and the waste heat of regenerated air exhaust is recovered, so that the heating in winter is ensured, part of the waste heat is used for regenerative heating, and the balance heat distribution is efficient and energy-saving.
In this embodiment, the coupled heat pump unit 100 is controlled to switch to a heating mode, the surface air cooler 6 stops running, the first control valve 3 and the third throttling device 33 are closed, the second control valve 34, the second throttling device 4 and the second compressor 32 are opened, the second throttling device 4 is opened at a preset opening of 10%, the second throttling device 4 performs PID adjustment according to a control target of a second preset temperature, the first-stage regeneration heating device 31 is used for regeneration temperature compensation, and the PID adjustment is performed according to the degree of wind-out after the first dehumidification wheel 12.
Specifically, when the energy-saving rotary dehumidification system is switched to a winter operation mode, the first heat exchanger 5 operates in a fresh air preheating mode, the second compressor 32 controls the operation target to be that the air temperature before entering the surface cooler 6 is more than or equal to 5 ℃, the surface cooler 6 and the deep dehumidification unit 200 stop operating, fresh air enters the first dehumidification wheel 12 for adsorption dehumidification, is mixed with return air of the clean drying room 25, is pressurized and lifted by the air pressurizing device 16 after being sucked in, a small part of low-humidity low-temperature air enters the cooling air channel 17 after being separated, enters the regeneration air channel 400 after heat is recovered in a supercooling region of the second dehumidification wheel 19, most of low-humidity low-temperature air flows along a channel of the treatment region, is subjected to temperature control adjustment by the first evaporator 18 and then enters the treatment region of the second dehumidification wheel 19 for re-adsorption dehumidification, reaches a target dew point set in the system, is subjected to a target dry bulb temperature set in the system again by the temperature adjustment heating device 24, and finally reaches a temperature set in the system, cleanliness and an ultra-low dew point, and is sent into the drying room 25. The regeneration air passing through the supercooling region of the second dehumidifying wheel 19 is transferred to the first condenser 26 through the first compressor 27 after passing through the first condenser 26, the heat absorbed by the first evaporator 18 is transferred to the first condenser 26 to be released and then heated, the regeneration temperature value control of the second dehumidifying wheel 19 is combined with the second-stage regeneration heating device 28 to ensure that the regeneration temperature is accurate and the humidity is adjustable according to the system setting, the fresh air moisture content of the regeneration air environment coming out of the second dehumidifying wheel 19 is still at a low value and is continuously used for primary regeneration, the second condenser 30 is used for assisting in heating the regeneration air, the regeneration temperature value control of the first dehumidifying wheel 12 is combined with the first-stage regeneration heating device 31 to ensure that the regeneration temperature value of the first dehumidifying wheel 12 is accurate and the humidity is adjustable according to the dew point setting behind the first dehumidifying wheel 12, and the regeneration air coming out of the first dehumidifying wheel 12 is discharged outdoors through the regeneration fan 36 to complete the desorption and release from the treatment region to absorb water.
In the embodiment of the invention, the energy-saving type rotating wheel dehumidification system adopts a multistage direct expansion coupling steaming combined deep refrigeration segmented composite dehumidification technology, adopts four segments, namely four segments of high Wen Zhipeng coupling, medium Wen Zhipeng coupling, surface cooling dehumidification and deep refrigeration dehumidification, and correspondingly realizes 15%, 10%, 0 and 15% of energy saving compared with the traditional rotating wheel dehumidifier, and the segmented composite dehumidification technology brings comprehensive energy saving by more than 40%. The first heat exchanger 5 and the second condenser 30 respectively comprise a high Wen Zhipeng coupling stage and a medium Wen Zhipeng coupling stage, when the high Wen Zhipeng coupling stage is carried out, the first heat exchanger 5 is placed in the fresh air duct 300 to pre-cool fresh air, the air outlet of the first heat exchanger 5 is controlled to be 25 ℃ per 95%, the second condenser 30 is placed in the regeneration area of the first dehumidifying wheel 12 to carry out primary air inlet heating, when the medium-temperature direct expansion coupling stage is carried out, the first heat exchanger 5 is placed in the fresh air duct 300 to carry out secondary air treatment, the air outlet of the first heat exchanger 5 is controlled to be 17 ℃ per 95%, and the second condenser 30 is placed in the regeneration area of the first dehumidifying wheel 12 to carry out secondary air heating.
When surface cooling dehumidification is carried out, conventional 7-DEG or 12-DEG chilled water is adopted, and the fresh air temperature in a treatment area is controlled by taking the temperature of the fresh air to be 9 ℃ per 95% as a target through a surface cooler 6;
when deep refrigeration and dehumidification are carried out, the third evaporator 45 is placed in the fresh air duct 300 to carry out deep cooling treatment on fresh air, and the third evaporator 45 is controlled with the aim of air outlet at 3 ℃/95%.
The energy-saving rotating wheel dehumidification system comprises a fresh air duct 300, a cooling air duct 17, a regeneration air duct 400, a rotating wheel dehumidification unit, a coupling heat pump unit 100 and a deep dehumidification unit 200, wherein a multistage direct expansion coupling steaming combined deep refrigeration sectional composite dehumidification technology is adopted, the refrigeration dehumidification and adsorption dehumidification proportion is changed, the fresh air moisture content is 30.7g/kg and is treated to 4.5g/kg, then the fresh air moisture content is treated to low dew point and ultra-low dew point by a first dehumidification wheel 12 and a second dehumidification wheel 19 by adsorption dehumidification, the treatment proportion of refrigeration dehumidification and adsorption dehumidification is improved to be more than 6:1 from the traditional less than 3:1, and more moisture is removed before entering the first dehumidification wheel 12, so that the system dehumidification is more energy-saving.
Referring to fig. 1 and 2, in certain embodiments, the coupled heat pump unit 100 further includes a first gas-liquid separator 39, the deep dehumidification unit 200 further includes a second gas-liquid separator 44, the first gas-liquid separator 39 is disposed between the second evaporator 35 and the second compressor 32, the second gas-liquid separator 44 is disposed between the third compressor 43 and the third evaporator 45, and by disposing the first gas-liquid separator 39 and the second gas-liquid separator 44, liquid working fluid is prevented from entering the second compressor 32, the third compressor 43 and other critical components, thereby reducing the risk of corrosion and damage and prolonging the service life of the apparatus.
Referring to fig. 1 and 3, in some embodiments, the water inlet of the surface cooler 6, the water inlet of the temperature-adjusting heat exchanger 22 and the water inlet of the third condenser 42 are respectively provided with a proportional adjusting valve 9, and by setting the proportional adjusting valve 9 at the water inlet of the surface cooler 6, the water inlet of the temperature-adjusting heat exchanger 22 and the water inlet of the third condenser 42, accurate control of flow rate can be achieved, energy can be saved, and flexibility and stability of the system can be improved.
Referring to fig. 1, in some embodiments, the energy-saving rotary dehumidification system further includes a fresh air damper 1, a fresh air exhaust valve 38, and a regeneration exhaust valve 37, where the fresh air damper 1 is disposed at an inlet of the fresh air duct 300, the fresh air exhaust valve 38 is disposed at an outlet of the fresh air duct 300, and the regeneration exhaust valve 37 is disposed at an outlet of the regeneration duct 400.
The fresh air valve 1 can adjust the suction amount of fresh air according to the requirement, thereby realizing the fresh air ventilation amount adjustment of indoor air, reasonably controlling the fresh air amount, reducing the energy consumption, improving the energy utilization efficiency and being beneficial to energy conservation and emission reduction.
The fresh air exhaust valve 38 can adjust the discharge amount of fresh air as required, so that the fresh air ventilation amount of the indoor air is adjusted, the fresh air amount is reasonably controlled, the energy consumption can be reduced, the energy utilization efficiency is improved, and the energy conservation and the emission reduction are facilitated.
Similarly, the regeneration exhaust valve 37 can effectively control the exhaust amount of the regeneration air duct 400, realize energy recovery and reutilization, and reasonably control the exhaust amount of the regeneration air duct 400 can also improve the energy efficiency performance of the system and reduce energy waste.
Further, be provided with primary filter 2 between fresh air blast gate 1 and the first heat exchanger 5, fresh air gets into the unit from fresh air blast gate 1 and carries out air purification at primary filter 2, and primary filter 2 can effectively filter large granule in the air and dust, prevents that these impurity from getting into first heat exchanger 5, and protection first heat exchanger 5 is not damaged.
Further, a medium-efficiency filter 21 is arranged between the temperature-adjusting heat exchanger 22 and the second dehumidifying wheel 19, the low-humidity low-temperature air entering the treatment area of the second dehumidifying wheel 19 is subjected to clean filtration through the medium-efficiency filter 21, and then is treated to the target dry bulb temperature set in the system through the temperature-adjusting heat exchanger 22, and the medium-efficiency filter 21 can effectively filter smaller particles and pollutants in the air, prevent the particles and pollutants from entering the temperature-adjusting heat exchanger 22, and protect the temperature-adjusting heat exchanger 22 from being damaged.
Referring to fig. 1, for example, in some embodiments, the energy-saving rotating wheel dehumidifying system further includes a return air pipe 15 connected to the fresh air duct 300, the return air pipe 15 is located between the first dehumidifying wheel 12 and the air pressurizing device 16, one end of the return air pipe 15 away from the fresh air duct 300 is used for being connected to the clean drying room 25, and the fresh air duct 300 is connected through the return air pipe 15, so that partial recycling of indoor air can be realized, energy consumption can be reduced, and energy efficiency can be improved.
Further, the return air valve 14 is arranged on the return air pipe 15, and the energy consumption of the system can be effectively controlled by reasonably adjusting the opening degree of the return air valve 14, so that the purpose of energy conservation is achieved.
Referring to fig. 1 to fig. 4, the embodiment of the invention further provides an energy-saving rotating wheel dehumidification method, which includes:
s101, acquiring the temperature of an environmental fresh air dry bulb and the moisture content of the environmental fresh air in real time;
S102, when the temperature of the dry bulb of the ambient fresh air is more than 9 ℃ or the moisture content of the ambient fresh air is more than 6.8g/kg, the energy-saving rotary dehumidification system is switched to a summer operation mode, the coupled heat pump unit 100 is controlled to be switched to a refrigeration mode, the deep dehumidification unit 200 is started, when the water inlet pipe 8 and the water outlet pipe 7 are detected to have water quantity and the air supercharging device 16 is started, the third condenser 42 and the fourth throttling device 46 are started, the third compressor 43 is started, the fourth throttling device 46 aims at controlling the temperature of the air outlet side of the third evaporator 45, and the lowest operation pressure difference between the evaporation side and the condensation side is ensured by controlling the condensation temperature of the third condenser 42;
s103, when the temperature of the ambient fresh air dry bulb is less than or equal to 9 ℃ or the moisture content of the ambient fresh air is less than or equal to 6.8g/kg, the energy-saving rotating wheel dehumidification system is switched to a winter operation mode, the coupled heat pump unit 100 is controlled to be switched to a heating mode, and the deep dehumidification unit 200 does not operate.
In the present embodiment, the proportional control valve 9 at the water inlet of the third condenser 42 is opened at a preset opening degree of 10%, and the fourth throttling means 46 is opened at a preset opening degree of 30%.
In this embodiment, when the coupled heat pump unit 100 is controlled to switch to the cooling mode, the first heat exchanger 5 enters the evaporation cooling mode, the second evaporator 35 stops operating, the second control valve 34 and the second throttling device 4 are closed, the first control valve 3, the third throttling device 33 and the second compressor 32 are opened, the third throttling device 33 performs PID adjustment according to the control target of the first preset temperature and the preset relative humidity value, the second compressor 32 transfers the heat of the treatment area to the second condenser 30 to be released to the regeneration side for regeneration heating, the first-stage regeneration heating device 31 is used for regeneration temperature compensation and performs PID adjustment according to the output wind-damp degree after the first dehumidification wheel 12, when the coupled heat pump unit 100 is controlled to switch to the heating mode, the surface cooler 6 stops operating, the first control valve 3 and the third throttling device 33 are closed, the second control valve 34, the second throttling device 4 and the second compressor 32 are opened, the second throttling device 4 performs PID adjustment according to the control target of the second preset temperature, and the first-stage regeneration heating device 31 is used for regeneration temperature compensation and performs PID adjustment according to the output wind-damp degree after the first dehumidification wheel 12.
Specifically, when the energy-saving rotary dehumidification system is switched to a summer operation mode, fresh air enters a unit from a fresh air valve 1 to be subjected to air purification treatment in a primary filter 2, a first heat exchanger 5 operates an evaporation refrigeration function to treat the fresh air to 17 ℃ per 95%, a proportional control valve 9 at a water inlet of a surface cooler 6 is opened to treat the fresh air to 9 ℃ per 95%, a deep dehumidification unit 200 operates to continuously treat the fresh air to 3 ℃ per 95%, then enters a first dehumidification wheel 12 to perform adsorption dehumidification, is mixed with return air of a clean drying room 25, is sucked by an air supercharging device 16 to boost aerodynamic force, is separated out, and enters a regeneration air duct 400 after heat is recovered in a supercooling area of a second dehumidification wheel 19, most of the low-humidity low-temperature air flows along a treatment area channel, is subjected to temperature control adjustment by the first evaporator 18 and enters a treatment area of the second dehumidification wheel 19 to reach a target ball temperature set in the system, is subjected to clean filtration by an intermediate filter 21 and treated by the heat exchanger 22 to reach the target ball temperature set in the system, and finally reaches the clean drying room temperature and the clean room temperature and the ultra-clean room temperature is reached. The regeneration air passing through the supercooling region of the second dehumidifying wheel 19 is heated after being transferred to the first condenser 26 through the first compressor 27 after being transferred to the first condenser 26 through the heat absorbed by the first evaporator 18, the regeneration temperature value of the second dehumidifying wheel 19 is controlled by combining the second-stage regeneration heating device 28, the regeneration temperature is guaranteed to be accurate, the humidity is adjustable according to the system setting, the fresh air moisture content of the regeneration air environment coming out of the second dehumidifying wheel 19 is still at a low value and is continuously used for primary regeneration, the regeneration air coming out of the second dehumidifying wheel 19 is heated after being transferred through the second compressor 32 preferentially through the second condenser 30, the regeneration temperature value of the first dehumidifying wheel 12 is controlled by combining the first-stage regeneration heating device 31, the regeneration temperature value of the first dehumidifying wheel 12 is guaranteed to be accurate, the humidity is adjustable according to the dew point setting after the first dehumidifying wheel 12 is guaranteed, the regeneration air coming out of the first dehumidifying wheel 12 is discharged to the outside through the regeneration fan 36 and the regeneration air exhaust valve 37, and the desorption of the water from the treatment region is completed after being transferred to the outside through the regeneration air exhaust valve 37. The second evaporator 35 is not in use in the summer mode of operation.
In this embodiment, the coupled heat pump unit 100 is controlled to switch to a heating mode, the surface air cooler 6 stops running, the first control valve 3 and the third throttling device 33 are closed, the second control valve 34, the second throttling device 4 and the second compressor 32 are opened, the second throttling device 4 is opened at a preset opening of 10%, the second throttling device 4 performs PID adjustment according to a control target of a second preset temperature, the first-stage regeneration heating device 31 is used for regeneration temperature compensation, and the PID adjustment is performed according to the degree of wind-out after the first dehumidification wheel 12.
Specifically, when the energy-saving rotary dehumidification system is switched to a winter operation mode, fresh air enters a unit from a fresh air valve 1 to perform air purification treatment on a primary filter 2, a first heat exchanger 5 is operated in a fresh air preheating mode, a second compressor 32 is controlled to operate at an air temperature which is more than or equal to 5 ℃ before entering a surface cooler 6, a preheating and antifreezing function is achieved, the surface cooler 6 stops operating, a proportional control valve 9 at a water inlet of the surface cooler 6 is closed, a deep dehumidification unit 200 stops operating, fresh air enters a first dehumidification wheel 12 to perform adsorption dehumidification, is mixed with return air of a clean drying room 25, is pressurized and lifted by an air pressurizing device 16 after being inhaled, a small part of low-humidity low-temperature air enters a cooling air channel 17, heat is recovered in a supercooling region of a second dehumidification wheel 19, most of low-humidity low-temperature air flows along a treatment region channel, enters a treatment region of the second dehumidification wheel 19 after being subjected to temperature control adjustment by a first evaporator 18, reaches a target dew point set in the system, is processed by a temperature adjusting device 24 to reach a target dry ball temperature set in the system, and finally the target dry ball temperature set in the system reaches the clean drying room 25 and the clean room has the ultra-low dew point. The regeneration air passing through the supercooling region of the second dehumidifying wheel 19 is transferred to the first condenser 26 through the first compressor 27 after passing through the first condenser 26, the heat absorbed by the first evaporator 18 is transferred to the first condenser 26 to be released and then heated, the regeneration temperature value control of the second dehumidifying wheel 19 is combined with the second-stage regeneration heating device 28, the regeneration temperature is guaranteed to be accurate, the humidity of fresh air in the regeneration air environment from the second dehumidifying wheel 19 is still at a low value and is continuously used for primary regeneration, the second condenser 30 is used for assisting in heating the regeneration air, the regeneration temperature value control of the first dehumidifying wheel 12 is combined with the first-stage regeneration heating device 31, the regeneration temperature value of the first dehumidifying wheel 12 is guaranteed to be accurate, the humidity is set to be adjustable according to the rear dew point of the first dehumidifying wheel 12, and the regeneration air passing through the first dehumidifying wheel 12 is discharged outdoors through the regeneration fan 36 and the regeneration exhaust valve 37, and the absorption transfer of high-temperature and high-humidity air from the treatment region to the regeneration region is completed, and the desorption release is completed.
In this embodiment, the first preset temperature is 17 ℃ and the preset relative humidity value is 95%.
In this embodiment, the second preset temperature is 5 ℃.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. The energy-saving rotating wheel dehumidification system is characterized by comprising a fresh air duct, a cooling duct, a regeneration duct, a rotating wheel dehumidification unit, a coupled heat pump unit, a deep dehumidification unit, a water inlet pipe and a water outlet pipe;
the rotating wheel dehumidification unit comprises a first dehumidification wheel, a second dehumidification wheel, a surface cooler, an air supercharging device, a first evaporator, a temperature-adjusting heat exchanger, a temperature-adjusting heating device, a first condenser, a first compressor, a first throttling device, a second regeneration heating device, a first regeneration heating device and a regeneration fan, wherein the first dehumidification wheel and the second dehumidification wheel are respectively and simultaneously arranged on the fresh air duct and the regeneration air duct;
The coupling heat pump unit comprises a first control valve, a second control valve, a first heat exchanger, a second throttling device, a second evaporator, a second compressor, a second condenser, a first dehumidifying wheel and a third throttling device which are sequentially connected end to end, wherein the first control valve is connected in parallel with two sides of the second throttling device, and the second control valve is connected in parallel with two sides of the third throttling device;
the deep dehumidification unit comprises a third condenser, a third compressor, a third evaporator and a fourth throttling device which are sequentially connected end to end, a water inlet of the third condenser is connected with the water inlet pipe, and a water outlet of the third condenser is connected with the water outlet pipe;
The first heat exchanger, the surface cooler, the third condenser, the first dehumidification wheel the air supercharging device, the first evaporator, the second dehumidification wheel the temperature-adjusting heat exchanger with the temperature-adjusting heating device sets gradually on the fresh air duct, the export in fresh air duct is used for being connected with clean drying room, the water inlet of surface cooler with the water inlet of temperature-adjusting heat exchanger respectively with inlet tube coupling, the delivery port of surface cooler with the delivery port of temperature-adjusting heat exchanger respectively with outlet coupling, first condenser first compressor the second grade regeneration heating device the second condenser the first grade regeneration heating device the second evaporator with the regeneration fan sets gradually along the regeneration direction on the fresh air duct, first compressor first condenser the first throttle device with first evaporator head-to-tail connects gradually, one end in the cooling air duct with be located between air duct and the first evaporator and the second supercharging device, the fresh air duct is connected with the regeneration fan through the first compressor.
2. The energy efficient rotary dehumidifier system of claim 1, wherein said coupled heat pump unit further comprises a first gas-liquid separator, said deep dehumidifier unit further comprising a second gas-liquid separator, said first gas-liquid separator disposed between said second evaporator and said second compressor, said second gas-liquid separator disposed between said third compressor and said third evaporator.
3. The energy-saving type rotating wheel dehumidification system as set forth in claim 1, wherein a water inlet of the surface cooler, a water inlet of the temperature-adjusting heat exchanger and a water inlet of the third condenser are respectively provided with a proportional regulating valve.
4. The energy-efficient rotary dehumidification system of claim 1, further comprising a fresh air damper, a fresh air vent and a regeneration vent, wherein the fresh air damper is disposed at an inlet of the fresh air duct, the fresh air vent is disposed at an outlet of the fresh air duct, and the regeneration vent is disposed at an outlet of the regeneration duct.
5. The energy efficient rotary dehumidification system as defined in claim 4, wherein a primary filter is disposed between the fresh air damper and the first heat exchanger, and a secondary filter is disposed between the temperature regulating heat exchanger and the second dehumidification wheel.
6. The energy efficient rotary dehumidification system as defined in claim 1, further comprising a return air duct connected to the fresh air duct, the return air duct being located between the first dehumidification wheel and the air plenum, one end of the return air duct remote from the fresh air duct being adapted to be connected to a clean drying room, the return air duct being provided with a return air valve.
7. A control method of an energy-saving type wheel dehumidification system, wherein the control method is used for realizing the operation control of the energy-saving type wheel dehumidification system according to any one of claims 1 to 6, the control method comprising:
acquiring the temperature of an environmental fresh air dry bulb and the moisture content of the environmental fresh air in real time;
When the temperature of the ambient fresh air dry bulb is more than 9 ℃ or the moisture content of the ambient fresh air is more than 6.8g/kg, the energy-saving rotating wheel dehumidification system is switched to a summer operation mode, the coupling heat pump unit is controlled to be switched to a refrigeration mode, the deep dehumidification unit is started, when the water quantity of the water inlet pipe and the water outlet pipe and the opening of the air pressurizing device are detected, the third condenser and the fourth throttling device are started, the third compressor is started, the fourth throttling device aims at controlling the temperature of the air outlet side of the third evaporator, and the lowest operation pressure difference between the evaporation side and the condensation side is ensured by controlling the condensation temperature of the third condenser;
When the temperature of the ambient fresh air dry bulb is less than or equal to 9 ℃ or the moisture content of the ambient fresh air is less than or equal to 6.8g/kg, the energy-saving rotating wheel dehumidification system is switched to a winter operation mode, the coupled heat pump unit is controlled to be switched to a heating mode, and the deep dehumidification unit does not operate.
8. The control method according to claim 7, wherein when the energy-saving rotary dehumidification system is switched to the summer operation mode, the proportional control valve at the water inlet of the third condenser is opened at a preset opening of 10%, and the fourth throttling means is opened at a preset opening of 30%.
9. The control method according to claim 7, wherein when the coupled heat pump unit is controlled to switch to the cooling mode, the first heat exchanger enters the evaporation cooling mode, the second evaporator stops operating, the second control valve and the second throttling device are closed, the first control valve, the third throttling device and the second compressor are opened, the third throttling device performs PID adjustment according to a control target of a first preset temperature and a preset relative humidity value, the second compressor transfers heat of the treatment area to the second condenser to be released to the regeneration side for regeneration heating, the first-stage regeneration heating device is used for regeneration temperature compensation and performs PID adjustment according to the degree of wind-out after the first dehumidification wheel, when the coupled heat pump unit is controlled to switch to the heating mode, the surface cooler stops operating, the first control valve and the third throttling device are closed, the second control valve, the second throttling device and the second compressor are opened, the second throttling device performs PID adjustment according to a control target of a second preset temperature, the first-stage regeneration heating device is used for regeneration temperature compensation, and performs PID adjustment according to the degree of wind-out after the first dehumidification wheel.
10. The control method according to claim 7, wherein the coupled heat pump unit is controlled to be switched to a heating mode, the surface cooler is stopped, the first control valve and the third throttling device are closed, the second control valve, the second throttling device and the second compressor are opened, the second throttling device is opened at a preset opening of 10%, the second throttling device performs PID adjustment according to a control target of a second preset temperature, the first-stage regenerative heating device is used for regenerative temperature compensation, and the PID adjustment is performed according to the degree of wind-out after the first dehumidifying wheel.
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| CN215112979U (en) * | 2021-06-08 | 2021-12-10 | 上海工程技术大学 | A direct-expansion runner compound deep dehumidification fresh air system |
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