Heat pump direct expansion type rotating wheel dehumidification system, control method and terminal

Abstract

According to the heat pump direct expansion type rotating wheel dehumidification system, the control method and the terminal, the direct expansion copious cooling module is additionally arranged behind the front surface air cooler, the rotating wheel dehumidification burden is effectively relieved, energy consumption is reduced, the direct expansion copious cooling module adopts the water cooling condensation technology, and under the condition that the air outlet humidity of an evaporator reaches the standard and the air supply dew point is not changed, the energy consumption is reduced. And energy is further saved by reducing regeneration air volume. Meanwhile, the medium-temperature heat pump module and the high-temperature heat pump module are integrated on the regeneration side, gradient utilization of energy is achieved, and the energy efficiency of the system is greatly improved. In addition, the system is provided with a processing side sensing module and a regeneration side sensing module, temperature and humidity data are collected in real time, accurate regulation and control are conducted according to preset values, and the air supply quality is ensured; the regeneration heat pump module evaporator conducts heat recovery on exhaust air, high-temperature low-humidity air on the regeneration side is efficiently exhausted, and the energy utilization rate is remarkably increased.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial dehumidification, and in particular to a heat pump direct expansion rotary dehumidification system, a control method and a terminal. Background Art

[0002] The dehumidification equipment used in the lithium battery production process adopts a rotary dehumidifier unit. The humid air is cooled and dehumidified by the front surface cooling and then enters the rotary treatment area. The moisture in the air is adsorbed by the rotary wheel and becomes dry air, which is transported to the room through the fan. The humid air in the regeneration area generally needs to be heated to 120-135℃ before entering the rotary regeneration area for desorption. The high-temperature and high-humidity air after desorption is discharged to the outside. This part of the heat is not fully utilized, resulting in energy waste.

[0003] At present, the rotary dehumidifier unit needs to provide 7°C chilled water for front surface cooling and use steam heating or electric heating to provide renewable energy. The energy consumption of the rotary dehumidifier unit in the entire lithium battery production process accounts for about 20%. It is urgent to research innovative technologies for energy conservation and emission reduction.

[0004] The existing dehumidification technology mentions the use of heat pumps in rotary dehumidification systems. The Chinese invention patent with application number 202110638669.3 discloses an organic combination of rotary dehumidification, direct expansion evaporative dehumidification and heat pump regeneration system, which can deeply dehumidify the air; but the evaporator of the newly added heat pump is placed after the front surface cooling, the evaporation temperature of the heat pump is 2~3℃, and the condensation temperature is 80~85℃ at this time, the heat pump efficiency is low, and at the same time, no other heat source is added to the outlet of the heat pump condenser on the regeneration side. When the heat pump system is not working, the dew point of the air supply of the rotary dehumidification unit cannot be guaranteed. Summary of the invention

[0005] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a heat pump direct expansion rotary dehumidification system, a control method and a terminal, which are used to solve the problems of high energy consumption of the rotary dehumidification unit in the prior art, and the low efficiency of the heat pump and the inability to guarantee the dew point of the supply air in the combined application of the heat pump and the rotary dehumidification system.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides a heat pump direct expansion rotary dehumidification system, the system comprising: a treatment side flow path, a regeneration side flow path, a dehumidification rotary wheel, a direct expansion cryogenic module, a medium-temperature heat pump module, a high-temperature heat pump module and a control module; wherein the treatment side flow path comprises: a treatment side fresh air inlet end, a first primary filter, a front surface cooler, a rotary wheel processing area of ​​a dehumidification rotary wheel, a rear surface cooler, a treatment fan, a medium-efficiency filter and an air supply end arranged in sequence along the treatment side air flow direction; a front surface cooler regulating water valve is arranged at the outlet of the front surface cooler; a rear surface cooler regulating water valve is arranged at the outlet of the rear surface cooler; the direct expansion cryogenic module is arranged between the front surface cooler and the rotary wheel processing area of ​​the dehumidification rotary wheel; a treatment side sensor module is arranged inside the treatment side flow path for collecting treatment side temperature and humidity data; the regeneration side flow path comprises: a treatment side fresh air inlet end, a first primary filter, a front surface cooler, a rotary wheel processing area of ​​a dehumidification rotary wheel, a rear surface cooler, a treatment fan, a medium-efficiency filter and an air supply end arranged in sequence along the treatment side air flow direction; a front surface cooler regulating water valve is arranged at the outlet of the rear surface cooler; a rear surface cooler regulating water valve is arranged at the outlet of the rear surface cooler; the direct expansion cryogenic module is arranged between the front surface cooler and the rotary wheel processing area of ​​the dehumidification rotary wheel; a treatment side sensor module is arranged inside the treatment side flow path for collecting treatment side temperature and humidity data; the regeneration side flow path comprises: a The regeneration air inlet end, the second primary filter, the auxiliary heater, the regeneration heater, the wheel regeneration area of ​​the dehumidification wheel, the regeneration fan and the exhaust end are arranged in sequence in the side air flow direction; the regeneration side flow path is connected with the medium-temperature heat pump module and the high-temperature heat pump module; a regeneration side sensor module is arranged inside the regeneration side flow path for collecting the temperature and humidity data of the regeneration side; the control module is used to control the front surface cooler, the rear surface cooler, the direct expansion deep cooling module, the regeneration heater, the auxiliary heater, the medium-temperature heat pump module and the high-temperature heat pump module to make corresponding adjustments according to the processing side temperature and humidity data and the regeneration side temperature and humidity data collected in real time by the processing side sensor module and the regeneration side sensor module, combined with the preset temperature and humidity set values, so as to deliver the air with the required supply temperature and humidity into the room on the processing side and discharge the air with the required low temperature and high humidity to the outside on the regeneration side.

[0007] In one embodiment of the present invention, the direct expansion deep cold module includes: a direct expansion compressor, a direct expansion water-cooled condenser, a direct expansion main electronic expansion valve, a direct expansion bypass electronic expansion valve, a direct expansion evaporator and a direct expansion regulating water valve; wherein the direct expansion evaporator is arranged between the front surface cooler and the rotor processing area; the direct expansion evaporator is respectively connected to the direct expansion compressor, the direct expansion main electronic expansion valve, and the direct expansion bypass electronic expansion valve; the direct expansion compressor is also connected to the direct expansion water-cooled condenser and the direct expansion bypass electronic expansion valve; the direct expansion water-cooled condenser is also connected to the direct expansion main electronic expansion valve, the direct expansion regulating water valve, the front surface cooler and the rear surface cooler; the direct expansion water-cooled condenser is also provided with a direct expansion regulating water valve, which is connected to the front surface cooling regulating water valve and the rear surface cooling regulating water valve.

[0008] In one embodiment of the present invention, the medium-temperature heat pump module includes: a medium-temperature heat pump compressor, a medium-temperature heat pump condenser, a medium-temperature heat pump electronic expansion valve and a medium-temperature heat pump evaporator; the high-temperature heat pump module includes: a high-temperature heat pump compressor, a high-temperature heat pump condenser, a high-temperature heat pump electronic expansion valve and a high-temperature heat pump evaporator; wherein the medium-temperature heat pump condenser is arranged between the auxiliary heater and the high-temperature heat pump condenser; the medium-temperature heat pump evaporator is arranged between the regeneration fan and the high-temperature heat pump evaporator; the high-temperature heat pump condenser is arranged between the regeneration heater and the medium-temperature heat pump condenser; the high-temperature heat pump evaporator is arranged between the medium-temperature heat pump evaporator and the rotor processing area of ​​the dehumidification rotor; the medium-temperature heat pump electronic expansion valve and the medium-temperature heat pump condenser and the medium-temperature heat pump evaporator are connected. The medium-temperature heat pump compressor is connected to the medium-temperature heat pump evaporator; the medium-temperature heat pump compressor is respectively connected to the medium-temperature heat pump condenser and the medium-temperature heat pump evaporator; the high-temperature heat pump compressor is connected to the high-temperature heat pump condenser and the high-temperature heat pump evaporator; the high-temperature heat pump electronic expansion valve is connected to the high-temperature heat pump condenser and the high-temperature heat pump evaporator; on the regeneration side, the humid air entering from the regeneration air inlet is first filtered through a primary filter, preheated by an auxiliary heater, and heated by the medium-temperature heat pump condenser, the high-temperature heat pump condenser and the regeneration heater, and then enters the rotor regeneration area to desorb moisture in the rotor, and then the desorbed air in the rotor regeneration area passes through the high-temperature heat pump evaporator and the medium-temperature heat pump evaporator in turn for cooling and dehumidification, and is finally discharged to the outdoors through the regeneration fan.

[0009] In one embodiment of the present invention, the processing side sensing module includes: a processing side fresh air temperature sensor and a processing side fresh air humidity sensor arranged between the processing side fresh air inlet and the primary filter, a front surface cooler outlet air temperature sensor arranged between the front surface cooler and the direct expansion evaporator, a direct expansion evaporator outlet air temperature sensor arranged between the direct expansion evaporator and the rotary treatment area, a rotary treatment side outlet air temperature sensor and a rotary treatment side supply air humidity sensor arranged between the rotary treatment area and the rear surface cooler; the regeneration side sensing module includes: a regeneration side fresh air temperature sensor arranged between the auxiliary heater and the medium temperature heat pump condenser, a regeneration temperature sensor arranged between the regeneration heater and the rotary regeneration area, a rotary regeneration side outlet air humidity sensor and a rotary regeneration side outlet air temperature sensor arranged between the rotary regeneration area and the high temperature heat pump evaporator, and an exhaust air humidity sensor and an exhaust air temperature sensor arranged between the medium temperature heat pump evaporator and the regeneration fan.

[0010] In one embodiment of the present invention, the control module is used to control the start-up of the treatment fan, the regeneration fan, and the rotor after the dehumidification system is started; the treatment side control operation and the regeneration side control operation are performed based on the treatment side control mechanism and the regeneration side control mechanism respectively; wherein the treatment side control mechanism includes: according to the treatment side fresh air temperature collected by the treatment side fresh air temperature sensor, the front surface cold air outlet temperature collected by the front surface cold air outlet temperature sensor, the treatment side fresh air humidity collected by the treatment side fresh air humidity sensor, the direct expansion evaporator outlet air temperature collected by the direct expansion evaporator outlet air temperature sensor, the rotor treatment side outlet air temperature collected by the rotor treatment side outlet air temperature sensor, the rotor treatment side supply air humidity collected by the rotor treatment side supply air humidity sensor, the rotor treatment side supply air temperature collected by the rotor treatment side supply air temperature sensor, and the front surface cold air outlet temperature collected by the treatment side temperature and humidity set value combined to control the front surface cold air outlet temperature. The regulating water valve, the rear surface cooling regulating water valve, the direct expansion cryogenic module and the regeneration heater are adjusted accordingly to deliver air of the required supply air temperature and humidity into the room on the treatment side; the regeneration side control mechanism includes: according to the regeneration side fresh air temperature collected by the regeneration side fresh air temperature sensor, the regeneration side fresh air humidity collected by the regeneration side fresh air humidity sensor, the regeneration temperature collected by the regeneration temperature sensor, the rotor regeneration side outlet air humidity collected by the rotor regeneration side outlet air humidity sensor, the rotor regeneration side outlet air temperature collected by the rotor regeneration side outlet air temperature sensor, the exhaust air humidity collected by the exhaust air humidity sensor, the exhaust air temperature collected by the exhaust air temperature sensor, and in combination with the regeneration side temperature and humidity set values, the auxiliary heater, the regeneration heater, the medium temperature heat pump module and the high temperature heat pump module are controlled to make corresponding adjustments to discharge the required low temperature and high humidity air outdoors on the regeneration side.

[0011] In one embodiment of the present invention, the processing side control mechanism includes: comparing the processing side fresh air temperature collected in real time by the processing side fresh air temperature sensor with the processing side fresh air temperature setting value, and when the processing side fresh air temperature reaches the processing side fresh air temperature setting value, controlling the front surface cooling regulating water valve to adjust so that the front surface cold outlet air temperature collected by the front surface cold outlet air temperature sensor is consistent with the front surface cold outlet air temperature setting value; wherein, the processing side fresh air temperature setting value is the same as the front surface cold outlet air temperature setting value; comparing the processing side fresh air humidity collected by the processing side fresh air humidity sensor with the processing side fresh air humidity setting value, and when the processing side fresh air humidity reaches the processing side fresh air humidity setting value, controlling the direct expansion cryogenic module to adjust so that the direct expansion evaporator outlet air temperature sensor The direct expansion evaporator outlet air temperature collected by the device reaches the direct expansion evaporator outlet air temperature setting value; the rotor treatment side supply air humidity collected by the rotor treatment side supply air humidity sensor is compared with the rotor treatment side supply air humidity setting value. When the rotor treatment side supply air humidity is inconsistent with the rotor treatment side supply air humidity setting value, the regeneration heater opening is controlled to adjust so that the rotor treatment side supply air humidity is consistent with the rotor treatment side supply air humidity setting value; the rotor treatment side outlet air temperature collected by the rotor treatment side outlet air temperature sensor is compared with the rotor treatment side outlet air temperature setting value. When the rotor treatment side outlet air temperature is inconsistent with the rotor treatment side outlet air temperature setting value, the rear surface cooling regulating water valve opening is controlled to reduce the rotor treatment side outlet air temperature to the rotor treatment side outlet air temperature setting value.

[0012] In one embodiment of the present invention, when the humidity of the fresh air on the processing side reaches the humidity setting value of the fresh air on the processing side, controlling the direct expansion cryogenic module to adjust includes: controlling the direct expansion cryogenic module to work, and the direct expansion main electronic expansion valve automatically adjusts according to the set superheat; comparing the direct expansion evaporator outlet air temperature collected by the direct expansion evaporator outlet air temperature sensor with the direct expansion evaporator outlet air temperature setting value, adjusting the front surface cooling outlet air temperature setting value, so that the direct expansion evaporator outlet air temperature reaches the direct expansion evaporator outlet air temperature setting value; when it is detected that the direct expansion evaporation temperature is lower than the direct expansion evaporation temperature setting value, controlling the direct expansion bypass electronic expansion valve to adjust the direct expansion evaporation temperature to the direct expansion evaporation temperature setting value; when it is detected that the direct expansion condensation temperature is lower than the direct expansion condensation temperature setting value, controlling the direct expansion regulating water valve to adjust the direct expansion condensation temperature to the direct expansion condensation temperature setting value.

[0013] In one embodiment of the present invention, the regeneration side control mechanism includes: comparing the regeneration side fresh air temperature collected by the regeneration side fresh air temperature sensor with the regeneration side fresh air temperature setting value, and controlling the opening of the auxiliary heater when the regeneration side fresh air temperature does not reach the regeneration side fresh air temperature setting value, so that the regeneration side fresh air temperature reaches the regeneration side fresh air temperature setting value; controlling the medium-temperature heat pump module to work, and the medium-temperature heat pump electronic expansion valve automatically adjusts according to the suction superheat, so that the suction superheat is consistent with the first suction superheat setting value; wherein the first suction superheat setting value is the same as the regeneration side fresh air temperature setting value; controlling the high-temperature heat pump module to work, and the high-temperature heat pump electronic expansion valve automatically adjusts according to the suction superheat, so that the suction superheat is consistent with the second suction superheat setting value; wherein the second suction superheat setting value is the same as the regeneration side fresh air temperature setting value; The supply air humidity of the wheel processing side collected by the supply air humidity sensor on the wheel processing side is compared with the supply air humidity setting value on the wheel processing side. When the supply air humidity of the wheel processing side is inconsistent with the supply air humidity setting value on the wheel processing side, the opening of the regeneration heater is controlled to make the supply air humidity of the wheel processing side consistent with the supply air humidity setting value on the wheel processing side; the wheel regeneration zone is controlled to desorb, so that the outlet air temperature of the wheel regeneration side collected by the outlet air temperature sensor on the wheel regeneration side increases and the outlet air humidity of the wheel regeneration side collected by the outlet air humidity sensor on the wheel regeneration side decreases; the high-temperature heat pump evaporator and the medium-temperature heat pump evaporator are controlled to recover heat from the air at the outlet of the wheel regeneration zone, so that the exhaust air humidity collected by the exhaust air humidity sensor increases and the exhaust air temperature collected by the exhaust air temperature sensor decreases, so as to discharge the low-temperature and high-humidity air that meets the requirements to the outdoors through the regeneration fan.

[0014] To achieve the above-mentioned purpose and other related purposes, the present invention provides a heat pump direct expansion rotary dehumidification method, which is applied to the heat pump direct expansion rotary dehumidification system, and the method includes: obtaining the processing side temperature and humidity data and the regeneration side temperature and humidity data collected in real time by the processing side sensor module and the regeneration side sensor module; controlling the front surface cooler, the rear surface cooler, the direct expansion deep cooling module, the regeneration heater, the auxiliary heater, the medium temperature heat pump module and the high temperature heat pump module to make corresponding adjustments according to the processing side temperature and humidity data, the regeneration side temperature and humidity data and the preset temperature and humidity set values, so as to deliver air with the required supply temperature and humidity into the room on the processing side and discharge the required low temperature and high humidity air to the outside on the regeneration side.

[0015] To achieve the above-mentioned purpose and other related purposes, the present invention provides an electronic terminal, comprising: one or more memories and one or more processors; the one or more memories are used to store computer programs; the one or more processors are connected to the memories and are used to run the computer programs to execute the heat pump direct expansion rotor dehumidification method.

[0016] As described above, the present invention is a heat pump direct expansion rotary dehumidification system, control method and terminal, which have the following beneficial effects: the present invention effectively reduces the dehumidification burden of the rotary wheel and reduces energy consumption by adding a direct expansion cryogenic module after the front surface cooler, and the direct expansion cryogenic module adopts water-cooled condensation technology to ensure that the humidity of the evaporator outlet air meets the standard. When the dew point of the supply air remains unchanged, energy is further saved by reducing the regeneration air volume. At the same time, medium-temperature and high-temperature heat pump modules are integrated on the regeneration side to realize the cascade utilization of energy and greatly improve the energy efficiency of the system. In addition, the system is equipped with processing side and regeneration side sensor modules to collect temperature and humidity data in real time, and accurately control according to preset values ​​to ensure the quality of air supply; the regeneration heat pump module evaporator recovers heat from the exhaust air, efficiently discharges the high-temperature and low-humidity air on the regeneration side, and significantly improves energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of a heat pump direct expansion rotary dehumidification system in one embodiment of the present invention.

[0018] Figure 2 Shown is a flow chart of a heat pump direct expansion rotor dehumidification control method according to an embodiment of the present invention.

[0019] Figure 3 Shown is a flow chart of a heat pump direct expansion rotor dehumidification control method according to an embodiment of the present invention.

[0020] Figure 4 FIG. 4 is a schematic diagram showing the structure of an electronic terminal in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that in the following description, reference is made to the accompanying drawings, which describe several embodiments of the present invention. It should be understood that other embodiments may also be used, and that mechanical composition, structure, electrical and operational changes may be made without departing from the spirit and scope of the present invention. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present invention is limited only by the claims of the published patents. The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. Spatially related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., may be used in the text to facilitate the description of the relationship between an element or feature shown in the figure and another element or feature.

[0023] Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a part is said to "include" a certain constituent element, unless otherwise stated, it does not exclude other constituent elements, but means that other constituent elements may be included.

[0024] The terms first, second and third mentioned herein are used to describe various parts, components, regions, layers and / or segments, but are not limited thereto. These terms are only used to distinguish a certain part, component, region, layer or segment from other parts, components, regions, layers or segments. Therefore, the first part, component, region, layer or segment described below may refer to the second part, component, region, layer or segment within the scope of the present invention.

[0025] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless there is an indication to the contrary in the context. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0026] The present invention provides a heat pump direct expansion rotary dehumidification system. By adding a direct expansion cryogenic module after the front surface cooler, the dehumidification burden of the rotary wheel is effectively reduced and energy consumption is reduced. The direct expansion cryogenic module adopts water-cooled condensation technology to ensure that the humidity of the evaporator air outlet meets the standard. When the dew point of the supply air remains unchanged, energy is further saved by reducing the regeneration air volume. At the same time, medium-temperature and high-temperature heat pump modules are integrated on the regeneration side to achieve cascade utilization of energy and greatly improve the energy efficiency of the system. In addition, the system is equipped with processing side and regeneration side sensor modules to collect temperature and humidity data in real time, and accurately control according to preset values ​​to ensure the quality of air supply; the regeneration heat pump module evaporator recovers heat from the exhaust air, efficiently discharges the high-temperature and low-humidity air on the regeneration side, and significantly improves energy utilization.

[0027] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention can be embodied in many different forms and is not limited to the embodiments described herein.

[0028] like Figure 1 A schematic structural diagram of a heat pump direct expansion rotary dehumidification system in an embodiment of the present invention is shown.

[0029] The system comprises: a treatment side flow path, a regeneration side flow path, a dehumidification rotor, a direct expansion cryogenic module, a medium temperature heat pump module, a high temperature heat pump module and a control module; Wherein, the processing side flow path includes: a processing side fresh air inlet end 1, a first primary filter 2, a front surface cooler 3, a dehumidification wheel treatment area 4, a rear surface cooler 5, a processing fan 6, a medium efficiency filter 7 and an air supply end 8 arranged in sequence along the processing side air flow direction; a front surface cooler 3 is provided with a front surface cooler regulating water valve 31 at the outlet; a rear surface cooler 5 is provided with a rear surface cooler regulating water valve 51 at the outlet; the direct expansion deep cooling module is arranged between the front surface cooler 3 and the dehumidification wheel treatment area 4; a processing side sensor module is arranged inside the processing side flow path for collecting processing side temperature and humidity data; On the treatment side, the outside wet air enters through the treatment side fresh air inlet 1, is filtered and purified by the first primary filter 2, cooled and dehumidified by the front surface cooler 3, and then enters the rotary treatment area 4 after deep cooling and dehumidification by the direct expansion cryogenic module. The moisture in the air is adsorbed by the rotary wheel to become dry air, cooled by the rear surface cooler 5, and then transported by the treatment fan 6 to obtain dry air with suitable temperature and humidity, and then filtered by the medium efficiency filter 7 and sent into the room through the air supply end 8; The regeneration side flow path includes: a regeneration air inlet end 9 along the regeneration side air flow direction, a second primary filter 10, an auxiliary heater 16, a regeneration heater 11, a dehumidification wheel regeneration area 12, a regeneration fan 13 and an exhaust end 14; the regeneration side flow path is connected to the medium temperature heat pump module and the high temperature heat pump module; a regeneration side sensor module is arranged inside the regeneration side flow path for collecting temperature and humidity data of the regeneration side; On the air regeneration side, the humid air entering from the regeneration air inlet 9 is first filtered by the second primary filter 10, and is preheated by the auxiliary heater 16, heated by the medium-temperature heat pump module, heated by the high-temperature heat pump module and heated by the regeneration heater 11, and then enters the rotor regeneration zone 12 to desorb the moisture in the rotor and restore the dehumidification capacity of the rotor. After that, the high-humidity air in the regeneration zone passes through the medium-temperature heat pump module and the high-temperature heat pump module in turn for heat recovery, cooling and dehumidification, and is then discharged to the outside through the regeneration fan 13.

[0030] The control module is connected to each device in the dehumidification system, and is used to control the front surface cooler 3, the rear surface cooler 5, the direct expansion cryogenic module, the regeneration heater 11, the auxiliary heater 16, the medium temperature heat pump module and the high temperature heat pump module to make corresponding adjustments based on the processing side temperature and humidity data and the regeneration side temperature and humidity data collected in real time by the processing side sensor module and the regeneration side sensor module, combined with the preset temperature and humidity set values, so as to deliver air with the required supply temperature and humidity into the room on the processing side and discharge the required low temperature and high humidity air outdoors on the regeneration side.

[0031] In one embodiment, the direct expansion cryogenic module includes: a direct expansion compressor 151, a direct expansion water-cooled condenser 152, a direct expansion main electronic expansion valve 153, a direct expansion bypass electronic expansion valve 154, a direct expansion evaporator 155 and a direct expansion regulating water valve 156; Among them, the direct expansion evaporator 155 is arranged in the air duct between the front surface cooler 3 and the rotor processing area 4; the direct expansion evaporator 155 is respectively connected to the direct expansion compressor 151, the direct expansion main electronic expansion valve 153, and the direct expansion bypass electronic expansion valve 154; the direct expansion compressor 151 is also connected to the direct expansion water-cooled condenser 152 and the direct expansion bypass electronic expansion valve 154; the direct expansion water-cooled condenser 152 is also connected to the direct expansion main electronic expansion valve 153, the direct expansion regulating water valve 156, the front surface cooler 3 and the rear surface cooler 5; the direct expansion water-cooled condenser 152 is also provided with a direct expansion regulating water valve 156, and the direct expansion regulating water valve 156 is connected to the front surface cooling regulating water valve 31 and the rear surface cooling regulating water valve 51.

[0032] On the refrigerant side, in the direct expansion cryogenic module, the low-temperature and low-pressure refrigerant evaporates and absorbs heat in the direct expansion evaporator 155, and is then sucked into the direct expansion compressor 151 and compressed into a high-temperature and high-pressure refrigerant gas. After passing through the direct expansion water-cooled condenser 152, it condenses and releases heat to become a refrigerant supercooled liquid, and is throttled into a low-temperature and low-pressure refrigerant liquid through the main direct expansion main electronic expansion valve 153, and returns to the direct expansion evaporator 155. During operation, in order to prevent the direct expansion evaporator 155 from frosting, when the temperature of the direct expansion evaporator 155 is lower than 2°C, part of the high-temperature and high-pressure refrigerant passes through the direct expansion bypass electronic expansion valve 154 and becomes medium-temperature and low-pressure steam, and is mixed with the low-temperature and low-pressure refrigerant liquid and enters the direct expansion evaporator 155. The dryness of the mixed refrigerant increases, so that the evaporation temperature is ≥2°C.

[0033] This solution adds a direct expansion cryogenic module after the front surface cooler 3, and the humidity is reduced to 5.15g / kg after the direct expansion evaporator 155, which reduces the dehumidification load of the rotor, thereby reducing the operating energy consumption. In addition, the direct expansion cryogenic module uses water-cooled condensation, the condensation temperature is as low as 20°C, the COP reaches 9.0, and the efficiency is guaranteed to ensure that the air outlet humidity of the direct expansion evaporator 155 reaches the set value. Adding a direct expansion cryogenic module after the front surface cooler 3, while the air supply dew point remains unchanged, reduces the regeneration energy consumption by reducing the regeneration air volume, and improves the overall energy efficiency of the system.

[0034] In one embodiment, the rotary dehumidification system integrates medium-temperature and high-temperature heat pump modules on the regeneration side to achieve cascade utilization of energy and greatly improve system energy efficiency. The medium-temperature heat pump module includes: a medium-temperature heat pump compressor 171, a medium-temperature heat pump condenser 172, a medium-temperature heat pump electronic expansion valve 173 and a medium-temperature heat pump evaporator 174; the high-temperature heat pump module includes: a high-temperature heat pump compressor 181, a high-temperature heat pump condenser 182, a high-temperature heat pump electronic expansion valve 183 and a high-temperature heat pump evaporator 184; Wherein, the medium-temperature heat pump condenser 172 is arranged between the auxiliary heater 16 and the high-temperature heat pump condenser 182; the medium-temperature heat pump evaporator 174 is arranged between the regeneration fan 13 and the high-temperature heat pump evaporator 184; the high-temperature heat pump condenser 182 is arranged between the regeneration heater 11 and the medium-temperature heat pump condenser 172; the high-temperature heat pump evaporator 184 is arranged between the medium-temperature heat pump evaporator 174 and the wheel regeneration zone 12 of the dehumidification wheel; the medium-temperature heat pump electronic expansion valve 173 is connected to the medium-temperature heat pump condenser 172 and the medium-temperature heat pump evaporator 174; the medium-temperature heat pump compressor 171 is connected to the medium-temperature heat pump condenser 172 and the medium-temperature heat pump evaporator 174 respectively; the high-temperature heat pump compressor 181 is connected to the high-temperature heat pump condenser 182 and the high-temperature heat pump evaporator 184; the high-temperature heat pump electronic expansion valve 183 is connected to the high-temperature heat pump condenser 182 and the high-temperature heat pump evaporator 184; On the regeneration side, the humid air entering from the regeneration air inlet 9 is first filtered by the second primary filter 10, preheated by the auxiliary heater 16, and heated by the medium-temperature heat pump condenser 172, the high-temperature heat pump condenser 182 and the regeneration heater 11, and then enters the rotary regeneration zone 12 to desorb the moisture in the rotary wheel. After that, the desorbed air in the rotary regeneration zone 12 passes through the high-temperature heat pump evaporator 184 and the medium-temperature heat pump evaporator 174 in turn for cooling and dehumidification, and is finally discharged to the outside through the regeneration fan 13.

[0035] A medium-temperature heat pump module and a high-temperature heat pump module are added on the regeneration side, and the energy on the evaporation side and condensation side of the medium-temperature and high-temperature heat pumps is utilized in a cascade. The fresh air at 35°C on the regeneration side is first heated to 80°C by the medium-temperature heat pump condenser 172, and then heated to 125°C by the high-temperature heat pump condenser 182, and then heated to the design temperature by the regeneration heater 11, and then desorbed and cooled to 70°C wet air by the rotary regeneration zone 12. The waste heat of the exhaust air is recovered by the high-temperature heat pump evaporator 184 and the medium-temperature heat pump evaporator 174, and then cooled to 25°C with a relative humidity of 95% by the medium-temperature heat pump evaporator 174, and discharged outdoors. The heat is fully utilized to improve the overall energy efficiency of the system.

[0036] In one embodiment, the processing side sensor module includes: A treatment side fresh air temperature sensor T1 and a treatment side fresh air humidity sensor H1 are provided between the treatment side fresh air inlet end 1 and the first primary filter 2; the treatment side fresh air temperature sensor T1 is used to collect the treatment side fresh air temperature, and the treatment side fresh air humidity sensor H1 is used to collect the treatment side fresh air humidity; The front surface cooling air outlet temperature sensor T2 is arranged between the front surface cooling device 3 and the direct expansion evaporator 155, and is used to collect the front surface cooling air outlet temperature; The direct expansion evaporator outlet air temperature sensor T3 is provided between the direct expansion evaporator 155 and the rotor processing zone 4, and is used to collect the direct expansion evaporator outlet air temperature; The rotor processing side air outlet temperature sensor T4 and the rotor processing side air supply humidity sensor H2 are arranged between the rotor processing area 4 and the rear surface cooler 5; the rotor processing side air outlet temperature sensor T4 is used to collect the rotor processing side air supply temperature; the rotor processing side air supply humidity sensor H2 is used to collect the rotor processing side air supply humidity; The regeneration side sensing module comprises: A regeneration side fresh air temperature sensor T6 is provided between the auxiliary heater 16 and the medium temperature heat pump condenser 172; the regeneration side fresh air temperature sensor T6 is used to collect the regeneration side fresh air temperature; A regeneration temperature sensor T7 is provided between the regeneration heater 11 and the rotor regeneration zone 12, and is used to collect the regeneration temperature; A rotor regeneration side outlet air humidity sensor H4 and a rotor regeneration side outlet air temperature sensor T8 are provided between the rotor regeneration area 12 and the high-temperature heat pump evaporator 184; the rotor regeneration side outlet air humidity sensor H4 is used to collect the rotor regeneration side outlet air humidity, and the rotor regeneration side outlet air temperature sensor T8 is used to collect the rotor regeneration side outlet air temperature; An exhaust humidity sensor H5 and an exhaust temperature sensor T9 are provided between the medium-temperature heat pump evaporator 174 and the regeneration fan 13; the exhaust humidity sensor H5 is used to collect exhaust humidity, and the exhaust temperature sensor T9 is used to collect exhaust temperature.

[0037] In one embodiment, the dehumidification system control mechanism control module is used to control the process fan 6, the regeneration fan 13, and the rotor to start working after the initial system startup; based on the process side control mechanism and the regeneration side control mechanism, the process side control operation and the regeneration side control operation are performed respectively; The processing side control mechanism includes: according to the processing side fresh air temperature collected by the processing side fresh air temperature sensor T1, the front surface cold air outlet temperature collected by the front surface cold air outlet temperature sensor T2, the processing side fresh air humidity collected by the processing side fresh air humidity sensor H1, the direct expansion evaporator outlet temperature collected by the direct expansion evaporator outlet temperature sensor T3, the rotor processing side outlet temperature collected by the rotor processing side outlet temperature sensor T4, the rotor processing side supply air humidity collected by the rotor processing side supply air humidity sensor H2, the regeneration temperature collected by the regeneration temperature sensor T7, and in combination with the processing side temperature and humidity set values, the front surface cold regulating water valve 31, the rear surface cold regulating water valve 51, the direct expansion deep cold module, and the regeneration heater 11 are controlled to make corresponding adjustments, so as to deliver air with the required supply air temperature and humidity into the room on the processing side; The regeneration side control mechanism includes: according to the regeneration side fresh air temperature collected by the regeneration side fresh air temperature sensor T6, the regeneration temperature collected by the regeneration temperature sensor T7, the wheel regeneration side outlet air humidity collected by the wheel regeneration side outlet air humidity sensor H4, the wheel regeneration side outlet air temperature collected by the wheel regeneration side outlet air temperature sensor T8, the exhaust air humidity collected by the exhaust air humidity sensor H5, the exhaust air temperature collected by the exhaust air temperature sensor T9 and the wheel processing side supply air humidity collected by the wheel processing side supply air humidity sensor H2, as well as combining the regeneration side temperature and humidity set values ​​to control the auxiliary heater 16, the regeneration heater 11, the medium temperature heat pump module and the high temperature heat pump module to make corresponding adjustments, so as to discharge the low temperature and high humidity air that meets the requirements to the outside on the regeneration side.

[0038] It should be noted that by setting the temperature and humidity setting values ​​on the processing side and the temperature and humidity setting values ​​on the regeneration side as required, it is possible to deliver air with the required supply temperature and humidity into the room on the processing side and to discharge air with the required low temperature and high humidity outdoors on the regeneration side.

[0039] In one embodiment, the processing side control mechanism includes: The processing side fresh air temperature collected in real time by the processing side fresh air temperature sensor T1 is compared with the processing side fresh air temperature setting value. When the processing side fresh air temperature reaches the processing side fresh air temperature setting value, the front surface cooling regulating water valve 31 is put into operation, and the front surface cooling regulating water valve 31 is controlled to adjust the front surface cold outlet air temperature collected by the front surface cold outlet air temperature sensor T2 to be consistent with the front surface cold outlet air temperature setting value; wherein, the processing side fresh air temperature setting value is the same as the front surface cold outlet air temperature setting value; it should be noted that the processing side fresh air temperature setting value and the front surface cold outlet air temperature setting value can be set according to demand, for example, to 12°C.

[0040] The processing side fresh air humidity collected by the processing side fresh air humidity sensor H1 is compared with the processing side fresh air humidity setting value. When the processing side fresh air humidity reaches the first humidity setting value, the direct expansion cryogenic module is controlled to adjust so that the direct expansion evaporator outlet air temperature collected by the direct expansion evaporator outlet air temperature sensor T3 reaches the direct expansion evaporator outlet air temperature setting value. It should be noted that the processing side fresh air humidity setting value and the direct expansion evaporator outlet air temperature setting value can be set according to demand. For example, the processing side fresh air humidity setting value is set to 6.8g / kg, and the direct expansion evaporator outlet air temperature setting value is 5°C.

[0041] The supply air humidity on the rotor processing side collected by the supply air humidity sensor H2 on the rotor processing side is compared with the set value of the supply air humidity on the rotor processing side. When the supply air humidity on the rotor processing side is inconsistent with the set value of the supply air humidity on the rotor processing side, the opening of the regeneration heater 11 is controlled to make the supply air humidity on the rotor processing side consistent with the supply air humidity on the rotor processing side; specifically, this step is linked with the step of adjusting the opening of the regeneration heater 11 related to the regeneration side control mechanism, and the purpose is to adjust the regeneration temperature by controlling the PID of the regeneration heater 11, so as to make the supply air humidity on the rotor processing side consistent with the set value of the supply air humidity on the rotor processing side; when the supply air humidity on the rotor processing side is greater than the set value of the supply air humidity on the rotor processing side, the opening of the regeneration heater 11 is increased, so that the regeneration temperature collected by the regeneration temperature sensor T7 is increased; when the supply air humidity on the rotor processing side is less than the set value of the supply air humidity on the rotor processing side, the opening of the regeneration heater 11 is reduced, so that the regeneration temperature collected by the regeneration temperature sensor T7 is reduced; until the supply air humidity on the rotor processing side is consistent with the set value of the supply air humidity on the rotor processing side. It should be noted that the set value of the air supply humidity on the rotor processing side can be set according to demand, for example, 1g / kg.

[0042] The outlet air temperature of the rotary processing side collected by the outlet air temperature sensor T4 of the rotary processing side is compared with the outlet air temperature setting value of the rotary processing side. When the outlet air temperature of the rotary processing side is inconsistent with the outlet air temperature setting value of the rotary processing side, the opening of the rear surface cooling regulating water valve 51 is controlled to reduce the supply air temperature T4 of the rotary processing side to the outlet air temperature setting value of the rotary processing side. Specifically, when the outlet air temperature of the rotary processing side is greater than the outlet air temperature setting value of the rotary processing side, the opening of the rear surface cooling regulating water valve 51 increases, and the outlet air temperature of the rear surface cooling decreases. When the outlet air temperature of the rotary processing side is greater than the outlet air temperature setting value of the rotary processing side, the opening of the rear surface cooling regulating water valve 51 increases, and the outlet air temperature of the rear surface cooling decreases. It should be noted that the outlet air temperature setting value of the rotary processing side can be set according to demand, for example, 23°C.

[0043] In a specific embodiment, when the humidity of the fresh air on the processing side reaches the set value of the fresh air humidity on the processing side, controlling the direct expansion cryogenic module to adjust includes: Control the operation of the direct expansion cryogenic module, and the direct expansion main circuit electronic expansion valve 153 is automatically adjusted according to the set superheat; Compare the direct expansion evaporator outlet air temperature collected by the direct expansion evaporator outlet air temperature sensor T3 with the direct expansion evaporator outlet air temperature setting value. When the direct expansion evaporator outlet air temperature is greater than the direct expansion evaporator outlet air temperature setting value, adjust the direct expansion evaporator outlet air temperature setting value to make the direct expansion evaporator outlet air temperature reach the direct expansion evaporator outlet air temperature setting value. When it is detected that the direct expansion evaporation temperature is lower than the direct expansion evaporation temperature setting value, the direct expansion bypass electronic expansion valve 154 is controlled to adjust so that the direct expansion evaporation temperature reaches the direct expansion evaporation temperature setting value; When it is detected that the direct expansion condensing temperature is lower than the direct expansion condensing temperature setting value, the direct expansion regulating water valve 156 is controlled to adjust so that the direct expansion condensing temperature reaches the direct expansion condensing temperature setting value.

[0044] It should be noted that the direct expansion evaporation temperature setting value and the direct expansion condensation temperature setting value can be set according to demand, for example, the direct expansion evaporation temperature setting value is 2°C, and the direct expansion condensation temperature setting value is 20°C.

[0045] In one embodiment, the regeneration side control mechanism includes: The regeneration side fresh air temperature collected by the regeneration side fresh air temperature sensor T6 is compared with the regeneration side fresh air temperature setting value. When the regeneration side fresh air temperature does not reach the regeneration side fresh air temperature setting value, the opening of the auxiliary heater 16 is controlled to make the regeneration side fresh air temperature reach the regeneration side fresh air temperature setting value; specifically, when the regeneration side fresh air temperature is lower than the regeneration side fresh air temperature setting value, the opening of the auxiliary heater 16 is increased, and the regeneration side fresh air temperature collected by the regeneration side fresh air temperature sensor T6 increases.

[0046] The medium-temperature heat pump module is controlled to work, the medium-temperature heat pump compressor 171 is started, and the medium-temperature heat pump electronic expansion valve 173 is automatically adjusted according to the suction superheat, so that the outlet air temperature of the medium-temperature heat pump condenser 172 increases; specifically, when the suction superheat is detected to be less than the first suction superheat setting value, the opening of the medium-temperature heat pump electronic expansion valve 173 is reduced to increase the suction superheat; when the suction superheat is detected to be not less than the first suction superheat setting value, the opening of the medium-temperature heat pump electronic expansion valve 173 is increased to reduce the suction superheat; during the working process of the medium-temperature heat pump module, the outlet air temperature of the medium-temperature heat pump condenser 172 increases; wherein, the first suction superheat setting value is the same as the regeneration side fresh air temperature setting value; The high-temperature heat pump module is controlled to work, the high-temperature heat pump compressor 181 is started, and the high-temperature heat pump electronic expansion valve 183 is automatically adjusted according to the suction superheat, so that the outlet air temperature of the high-temperature heat pump condenser 182 increases; specifically, when the detected suction superheat is less than the second suction superheat setting value, the opening of the high-temperature heat pump electronic expansion valve 183 is reduced to increase the suction superheat; when the detected suction superheat is not less than the second suction superheat setting value, the opening of the high-temperature heat pump electronic expansion valve 183 is increased to reduce the suction superheat; during the operation of the high-temperature heat pump module, the outlet air temperature of the high-temperature heat pump condenser 182 increases; the second suction superheat setting value is the same as the regeneration side fresh air temperature setting value; The supply air humidity of the rotor processing side collected by the supply air humidity sensor H2 on the rotor processing side is compared with the supply air humidity setting value on the rotor processing side. When the supply air humidity of the rotor processing side is inconsistent with the supply air humidity setting value on the rotor processing side, the opening of the regeneration heater is controlled to make the supply air humidity of the rotor processing side consistent with the second humidity setting value of the supply air humidity of the rotor processing side. Specifically, this step is linked with the opening adjustment step of the relevant regeneration heater 11 of the processing side control mechanism, and the purpose is to adjust the regeneration temperature by controlling the regeneration heater 11PID, so as to make the supply air humidity of the rotor processing side consistent with the supply air humidity setting value on the rotor processing side. When the supply air humidity of the rotor processing side is greater than the supply air humidity setting value on the rotor processing side, the opening of the regeneration heater 11 is increased, so that the regeneration temperature collected by the regeneration temperature sensor T7 is increased; when the supply air humidity of the rotor processing side is less than the supply air humidity setting value on the rotor processing side, the opening of the regeneration heater 11 is reduced, so that the regeneration temperature collected by the regeneration temperature sensor T7 is reduced; until the supply air humidity of the rotor processing side is consistent with the supply air humidity setting value on the rotor processing side.

[0047] Control the regeneration zone 12 of the wheel to desorb, so that the outlet air temperature of the wheel regeneration side collected by the outlet air temperature sensor T8 of the wheel regeneration side increases and the outlet air humidity of the wheel regeneration side collected by the outlet air humidity sensor H4 of the wheel regeneration side decreases; When the high-temperature heat pump module is working, the high-temperature heat pump evaporator 184 absorbs the air at the outlet of the wheel regeneration zone for heat recovery, cooling and dehumidification. Then, when the medium-temperature heat pump module 18 is working, the medium-temperature heat pump evaporator 174 absorbs the heat in the air in the air duct for further heat recovery, cooling and dehumidification, so that the exhaust humidity collected by the exhaust humidity sensor H5 increases and the exhaust temperature collected by the exhaust temperature sensor T9 decreases, so as to discharge the low-temperature and high-humidity air that meets the requirements to the outdoors through the regeneration fan 13.

[0048] It should be noted that the regeneration side fresh air temperature setting value, the first intake air superheat setting value, and the second intake air superheat setting value can be set according to demand, for example, to 5°C.

[0049] The principle of the embodiment is similar to that of the present invention, which provides a heat pump direct expansion rotor dehumidification control method.

[0050] The following provides specific embodiments in conjunction with the accompanying drawings: like Figure 2 A flow chart showing a heat pump direct expansion rotor dehumidification control method in an embodiment of the present invention.

[0051] The control module applied to the heat pump direct expansion rotary dehumidification system in the above embodiment, the method includes: Step S1: Acquire the temperature and humidity data of the processing side and the temperature and humidity data of the regeneration side collected in real time by the processing side sensor module and the regeneration side sensor module.

[0052] Step S2: According to the temperature and humidity data on the processing side, the temperature and humidity data on the regeneration side and the preset temperature and humidity set values, the front surface cooler, the rear surface cooler, the direct expansion cryogenic module, the regeneration heater, the auxiliary heater, the medium-temperature heat pump module and the high-temperature heat pump module are controlled to make corresponding adjustments, so as to deliver air with the required supply temperature and humidity into the room on the processing side and to discharge the air with the required low temperature and high humidity to the outside on the regeneration side.

[0053] Since the implementation principle of the heat pump direct expansion rotor dehumidification control method has been described in the above-mentioned embodiment, it will not be repeated here.

[0054] In order to better describe the heat pump direct expansion rotor dehumidification control method, it is now explained in conjunction with the following specific embodiments.

[0055] Embodiment: A heat pump direct expansion rotary dehumidification control method. Figure 3 Schematic diagram of the flow of the heat pump direct expansion rotor dehumidification control method in this embodiment.

[0056] The method comprises: Step 1: The dehumidification system is started, and the treatment fan, regeneration fan, and rotor are started. The treatment fan and regeneration fan are frequency-controlled according to the required air volume; then, step 2 and step 3 are performed simultaneously; step 2 includes: Step 2.1: When it is detected that the collected treatment side fresh air temperature is ≥12°C, the front surface cooling regulating water valve adjusts the front surface cooling air outlet temperature to 12°C; when it is detected that the treatment side fresh air temperature T1 is <12°C, the front surface cooling regulating water valve does not work; the front surface cooler water supply temperature is ≤7°C.

[0057] Step 2.2: When it is detected that the collected fresh air humidity on the treatment side is ≥6.8g / kg, the direct expansion cryogenic module works, and the direct expansion main electronic expansion valve is automatically adjusted according to the set superheat; when the direct expansion evaporator outlet air temperature is >5℃, it is necessary to adjust the set value of the front surface cooling outlet air temperature so that the direct expansion evaporator outlet air temperature reaches 5℃; when the direct expansion evaporation temperature is detected to be <2℃, the direct expansion bypass electronic expansion valve adjusts its evaporation temperature to 2℃; when the condensing temperature is detected to be <20℃, the direct expansion regulating water valve adjusts its condenser temperature to 20℃; the water supply temperature of the direct expansion condenser is ≤7℃.

[0058] Step 2.3 is associated with step 3.4. The rotary treatment area is further dehumidified by adsorption. It detects whether the supply air humidity is 1g / kg. If it is detected that the supply air humidity is greater than 1g / kg, the regeneration heater is opened. The opening of the regeneration heater is increased to increase the regeneration temperature. If it is detected that the supply air humidity is less than 1g / kg, the opening of the regeneration heater is reduced to reduce the regeneration temperature until the supply air humidity is 1g / kg.

[0059] Step 2.4: The temperature of the rotary treatment area will increase during the adsorption process. When the supply air temperature on the rotary treatment side is greater than 23°C, the opening of the rear surface cooling regulating water valve increases, and the outlet air temperature of the rear surface cooler decreases; when the supply air temperature on the rotary treatment side is less than 23°C, the opening of the rear surface cooling regulating water valve decreases, and the outlet air temperature of the rear surface cooler increases. Adjust until the supply air temperature on the rotary treatment side reaches 23°C; the water supply temperature of the rear surface cooler is ≤7°C.

[0060] Step 2.5: The processing side obtains appropriate supply air temperature and humidity and delivers it into the room.

[0061] Step 3 includes: Step 3.1: When the fresh air temperature on the regeneration side of the rotor is detected to be 5°C, the opening of the auxiliary heater is increased, and the fresh air temperature on the regeneration side is increased, so that the fresh air temperature on the regeneration side of the rotor reaches 5°C.

[0062] Step 3.2: The medium-temperature heat pump module works, the medium-temperature compressor starts, and the medium-temperature electronic expansion valve automatically adjusts according to the suction superheat. When the detected superheat is less than 5°C, the opening of the medium-temperature electronic expansion valve decreases to increase the superheat. When the detected superheat is greater than 5°C, the opening of the medium-temperature electronic expansion valve increases to reduce the superheat. When the medium-temperature heat pump module is working, the medium-temperature condenser outlet air temperature increases, and the working method is related to step 3.7.

[0063] Step 3.3: The high-temperature heat pump module works, the high-temperature compressor starts, and the high-temperature electronic expansion valve automatically adjusts according to the suction superheat. When the detected suction superheat is less than 5°C, the opening of the high-temperature electronic expansion valve decreases to increase the superheat. When the detected superheat is greater than 5°C, the opening of the high-temperature electronic expansion valve increases to reduce the superheat. When the high-temperature heat pump module works, the high-temperature condenser outlet air temperature increases, and the working method is related to step 3.8.

[0064] Step 3.4 is related to step 2.3, please refer to step 2.3 for details.

[0065] Step 3.5: After desorption in the regeneration zone of the rotor, the outlet air humidity increases and becomes high-temperature and high-humidity air, which increases the outlet air temperature of the regeneration side of the rotor and reduces the outlet air humidity of the regeneration side of the rotor.

[0066] Step 3.6: When the high-temperature heat pump module is working, the high-temperature heat pump evaporator absorbs heat from the air in the air duct to recover heat, cool down and dehumidify.

[0067] Step 3.7: When the medium temperature heat pump module is working, the medium temperature heat pump evaporator absorbs the heat in the air in the air duct to further recover the heat, cool and dehumidify, so that the collected exhaust air humidity increases and the exhaust air temperature decreases.

[0068] Step 3.8: Low-temperature, high-humidity air is exhausted outdoors through the regeneration fan.

[0069] The heat pump direct expansion rotary dehumidification method provided in the embodiment of the present invention can be implemented on the terminal side or the server side. As for the hardware structure of the electronic terminal, please refer to Figure 4 , is an optional hardware structure diagram of an electronic terminal 1000 provided in an embodiment of the present invention. The electronic terminal 1000 may be a mobile phone, a computer device, a tablet device, a personal digital processing device, a factory background processing device, etc. The electronic terminal 1000 includes: at least one processor 1001, a memory 1002, at least one network interface 10010 and a user interface 1009. The various components in the device are coupled together through a bus system 1005. It can be understood that the bus system 1005 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1005 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, in Figure 4 In the specification, various buses are labeled as bus systems.

[0070] The user interface 1009 may include a display, a keyboard, a mouse, a trackball, a click gun, keys, buttons, a touch pad or a touch screen.

[0071] It is understood that the memory 1002 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), which is used as an external cache. By way of exemplary but not limiting explanation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM). The memory described in the embodiments of the present invention is intended to include but is not limited to these and any other suitable categories of memory.

[0072] The memory 1002 in the embodiment of the present invention is used to store various categories of data to support the operation of the electronic terminal 1000. Examples of these data include: any executable program for operating on the electronic terminal 1000, such as an operating system 10021 and an application 10022; the operating system 10021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application 10022 may include various applications, such as a media player (MediaPlayer), a browser (Browser), etc., for implementing various application services. The heat pump direct expansion rotary dehumidification system provided in the embodiment of the present invention may be included in the application 10022.

[0073] The method disclosed in the above embodiment of the present invention can be applied to the processor 1001, or implemented by the processor 1001. The processor 1001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processor 1001 or the instruction in the form of software. The above processor 1001 may be a general processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 1001 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiment of the present invention. The general processor 1001 can be a microprocessor or any conventional processor, etc. In combination with the steps of the accessory optimization method provided in the embodiment of the present invention, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0074] In an exemplary embodiment, the electronic terminal 1000 may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD) to execute the aforementioned method.

[0075] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to the computer program. The aforementioned computer program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

[0076] In the embodiments provided in the present application, the computer readable and writable storage medium may include a read-only memory, a random access memory, an EEPROM, a CD-ROM or other optical disk storage device, a disk storage device or other magnetic storage device, a flash memory, a USB flash drive, a mobile hard disk, or any other medium that can be used to store the desired program code in the form of an instruction or data structure and can be accessed by a computer. In addition, any connection can be appropriately referred to as a computer-readable medium. For example, if the instruction is sent from a website, a server or other remote source using a coaxial cable, an optical fiber cable, a twisted pair, a digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, optical fiber cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. However, it should be understood that computer readable and writable storage media and data storage media do not include connections, carriers, signals, or other temporary media, but are intended to be non-temporary, tangible storage media. Disk and disc, as used in this application, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.

[0077] In summary, a heat pump direct expansion rotary dehumidification system, control method and terminal of the present invention effectively reduce the dehumidification burden of the rotary wheel and reduce energy consumption by adding a direct expansion cryogenic module after the front surface cooler, and the direct expansion cryogenic module adopts water-cooled condensation technology to ensure that the humidity of the evaporator air outlet meets the standard. When the dew point of the supply air remains unchanged, energy is further saved by reducing the regeneration air volume. At the same time, medium-temperature and high-temperature heat pump modules are integrated on the regeneration side to achieve the cascade utilization of energy and greatly improve the energy efficiency of the system. In addition, the system is equipped with processing side and regeneration side sensor modules to collect temperature and humidity data in real time, and accurately control according to preset values ​​to ensure the quality of air supply; the regeneration heat pump module evaporator recovers heat from the exhaust air, efficiently discharges the high-temperature and low-humidity air on the regeneration side, and significantly improves energy utilization. Therefore, the present invention effectively overcomes the various shortcomings in the prior art and has a high industrial utilization value.

[0078] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A heat pump direct expansion rotary dehumidification system, characterized in that: The system comprises: a treatment side flow path, a regeneration side flow path, a dehumidification rotor, a direct expansion cryogenic module, a medium temperature heat pump module, a high temperature heat pump module and a control module; Wherein, the processing side flow path includes: a processing side fresh air inlet end, a first primary filter, a front surface cooler, a dehumidification wheel processing area, a rear surface cooler, a processing fan, a medium efficiency filter and an air supply end which are sequentially arranged along the processing side air flow direction; a front surface cooler outlet is provided with a front surface cooler regulating water valve; a rear surface cooler outlet is provided with a rear surface cooler regulating water valve; the direct expansion deep cooling module is arranged between the front surface cooler and the dehumidification wheel processing area; a processing side sensor module is arranged inside the processing side flow path for collecting processing side temperature and humidity data; The regeneration side flow path includes: a regeneration air inlet end, a second primary filter, an auxiliary heater, a regeneration heater, a rotor regeneration area of ​​a dehumidification rotor, a regeneration fan and an exhaust end arranged in sequence along the regeneration side air flow direction; the regeneration side flow path is connected to a medium temperature heat pump module and a high temperature heat pump module; a regeneration side sensor module is arranged inside the regeneration side flow path for collecting temperature and humidity data of the regeneration side; The control module is used to control the front surface cooler, the rear surface cooler, the direct expansion cryogenic module, the regeneration heater, the auxiliary heater, the medium temperature heat pump module and the high temperature heat pump module to make corresponding adjustments based on the processing side temperature and humidity data and the regeneration side temperature and humidity data collected in real time by the processing side sensor module and the regeneration side sensor module in combination with preset temperature and humidity set values, so as to deliver air with the required supply temperature and humidity into the room on the processing side and discharge the required low temperature and high humidity air outdoors on the regeneration side.

2. The heat pump direct expansion rotary dehumidification system according to claim 1, characterized in that: The direct expansion cryogenic module comprises: a direct expansion compressor, a direct expansion water-cooled condenser, a direct expansion main circuit electronic expansion valve, a direct expansion bypass electronic expansion valve, a direct expansion evaporator and a direct expansion regulating water valve; Among them, the direct expansion evaporator is arranged between the front surface cooler and the rotor processing area; the direct expansion evaporator is respectively connected to the direct expansion compressor, the direct expansion main electronic expansion valve, and the direct expansion bypass electronic expansion valve; the direct expansion compressor is also connected to the direct expansion water-cooled condenser and the direct expansion bypass electronic expansion valve; the direct expansion water-cooled condenser is also connected to the direct expansion main electronic expansion valve, the direct expansion regulating water valve, the front surface cooler and the rear surface cooler; the direct expansion water-cooled condenser is also provided with a direct expansion regulating water valve, which is connected to the front surface cooling regulating water valve and the rear surface cooling regulating water valve.

3. The heat pump direct expansion rotary dehumidification system according to claim 2, characterized in that: The medium-temperature heat pump module includes: a medium-temperature heat pump compressor, a medium-temperature heat pump condenser, a medium-temperature heat pump electronic expansion valve and a medium-temperature heat pump evaporator; the high-temperature heat pump module includes: a high-temperature heat pump compressor, a high-temperature heat pump condenser, a high-temperature heat pump electronic expansion valve and a high-temperature heat pump evaporator; Wherein, the medium-temperature heat pump condenser is arranged between the auxiliary heater and the high-temperature heat pump condenser; the medium-temperature heat pump evaporator is arranged between the regeneration fan and the high-temperature heat pump evaporator; the high-temperature heat pump condenser is arranged between the regeneration heater and the medium-temperature heat pump condenser; the high-temperature heat pump evaporator is arranged between the medium-temperature heat pump evaporator and the rotor processing area of ​​the dehumidification rotor; the medium-temperature heat pump electronic expansion valve is connected to the medium-temperature heat pump condenser and the medium-temperature heat pump evaporator; the medium-temperature heat pump compressor is connected to the medium-temperature heat pump condenser and the medium-temperature heat pump evaporator respectively; the high-temperature heat pump compressor is connected to the high-temperature heat pump condenser and the high-temperature heat pump evaporator; the high-temperature heat pump electronic expansion valve is connected to the high-temperature heat pump condenser and the high-temperature heat pump evaporator; On the regeneration side, the humid air entering from the regeneration air inlet is first filtered by a primary filter, preheated by an auxiliary heater, and heated by a medium-temperature heat pump condenser, a high-temperature heat pump condenser and a regeneration heater, and then enters the rotary wheel regeneration zone to desorb moisture from the rotary wheel. After that, the desorbed air in the rotary wheel regeneration zone passes through a high-temperature heat pump evaporator and a medium-temperature heat pump evaporator in turn for cooling and dehumidification, and is finally discharged to the outside through a regeneration fan.

4. The heat pump direct expansion rotary dehumidification system according to claim 3, characterized in that: The processing side sensor module includes: a processing side fresh air temperature sensor and a processing side fresh air humidity sensor arranged between the processing side fresh air inlet and the primary filter, a front surface cooler outlet air temperature sensor arranged between the front surface cooler and the direct expansion evaporator, a direct expansion evaporator outlet air temperature sensor arranged between the direct expansion evaporator and the rotor processing area, a rotor processing side outlet air temperature sensor arranged between the rotor processing area and the rear surface cooler, and a rotor processing side supply air humidity sensor; The regeneration side sensing module includes: a regeneration side fresh air temperature sensor arranged between the auxiliary heater and the medium-temperature heat pump condenser, a regeneration temperature sensor arranged between the regeneration heater and the rotor regeneration zone, a rotor regeneration side outlet air humidity sensor and a rotor regeneration side outlet air temperature sensor arranged between the rotor regeneration zone and the high-temperature heat pump evaporator, and an exhaust air humidity sensor and an exhaust air temperature sensor arranged between the medium-temperature heat pump evaporator and the regeneration fan.

5. The heat pump direct expansion rotary dehumidification system according to claim 4, characterized in that: The control module is used to control the start-up of the processing fan, the regeneration fan and the rotor after the dehumidification system is started; based on the processing side control mechanism and the regeneration side control mechanism, the processing side control operation and the regeneration side control operation are performed respectively; Wherein, the processing side control mechanism includes: according to the processing side fresh air temperature collected by the processing side fresh air temperature sensor, the front surface cold air outlet temperature collected by the front surface cold air outlet temperature sensor, the processing side fresh air humidity collected by the processing side fresh air humidity sensor, the direct expansion evaporator outlet air temperature collected by the direct expansion evaporator outlet air temperature sensor, the rotor processing side outlet air temperature collected by the rotor processing side outlet air temperature sensor, the rotor processing side supply air humidity collected by the rotor processing side supply air humidity sensor, the rotor processing side supply air temperature collected by the rotor processing side supply air temperature sensor, and in combination with the processing side temperature and humidity set values, controlling the front surface cold regulating water valve, the rear surface cold regulating water valve, the direct expansion deep cold module, and the regeneration heater to make corresponding adjustments, so as to deliver air with the required supply air temperature and humidity into the room on the processing side; The regeneration side control mechanism includes: controlling the regeneration side fresh air temperature collected by the regeneration side fresh air temperature sensor, the regeneration side fresh air humidity collected by the regeneration side fresh air humidity sensor, the regeneration temperature collected by the regeneration temperature sensor, the rotor regeneration side outlet air humidity collected by the rotor regeneration side outlet air humidity sensor, the rotor regeneration side outlet air temperature collected by the rotor regeneration side outlet air temperature sensor, the exhaust air humidity collected by the exhaust air humidity sensor, the exhaust air temperature collected by the exhaust air temperature sensor, and combining the regeneration side temperature and humidity set values ​​to control the auxiliary heater, the regeneration heater, the medium temperature heat pump module and the high temperature heat pump module for corresponding adjustments, so as to discharge the low temperature and high humidity air that meets the requirements to the outdoors on the regeneration side.

6. The heat pump direct expansion rotary dehumidification system according to claim 5, characterized in that: The processing side control mechanism includes: Compare the processing side fresh air temperature collected in real time by the processing side fresh air temperature sensor with the processing side fresh air temperature setting value, and when the processing side fresh air temperature reaches the processing side fresh air temperature setting value, control the front table cold regulating water valve to adjust so that the front table cold outlet air temperature collected by the front table cold outlet air temperature sensor is consistent with the front table cold outlet air temperature setting value; wherein, the processing side fresh air temperature setting value is the same as the front table cold outlet air temperature setting value; The processing side fresh air humidity collected by the processing side fresh air humidity sensor is compared with the processing side fresh air humidity setting value, and when the processing side fresh air humidity reaches the processing side fresh air humidity setting value, the direct expansion cryogenic module is controlled to adjust so that the direct expansion evaporator outlet air temperature collected by the direct expansion evaporator outlet air temperature sensor reaches the direct expansion evaporator outlet air temperature setting value; The supply air humidity of the rotor processing side collected by the supply air humidity sensor of the rotor processing side is compared with the supply air humidity setting value of the rotor processing side. When the supply air humidity of the rotor processing side is inconsistent with the supply air humidity setting value of the rotor processing side, the opening of the regeneration heater is controlled to adjust so that the supply air humidity of the rotor processing side is consistent with the supply air humidity setting value of the rotor processing side; The rotor processing side outlet air temperature collected by the rotor processing side outlet air temperature sensor is compared with the rotor processing side outlet air temperature setting value. When the rotor processing side outlet air temperature is inconsistent with the rotor processing side outlet air temperature setting value, the rear surface cooling regulating water valve opening is controlled to reduce the rotor processing side outlet air temperature to the rotor processing side outlet air temperature setting value.

7. The heat pump direct expansion rotary dehumidification system according to claim 6, characterized in that: When the humidity of the fresh air on the processing side reaches the set value of the fresh air humidity on the processing side, controlling the direct expansion cryogenic module to adjust comprises: Controlling the operation of the direct expansion cryogenic module, the electronic expansion valve of the direct expansion main circuit is automatically adjusted according to the set superheat; Compare the direct expansion evaporator outlet air temperature collected by the direct expansion evaporator outlet air temperature sensor with the direct expansion evaporator outlet air temperature setting value, and adjust the front surface cooling outlet air temperature setting value to make the direct expansion evaporator outlet air temperature reach the direct expansion evaporator outlet air temperature setting value; When it is detected that the direct expansion evaporation temperature is lower than the direct expansion evaporation temperature setting value, the direct expansion bypass electronic expansion valve is controlled to adjust so that the direct expansion evaporation temperature reaches the direct expansion evaporation temperature setting value; When it is detected that the direct expansion condensing temperature is lower than the direct expansion condensing temperature setting value, the direct expansion regulating water valve is controlled to adjust the direct expansion condensing temperature to the direct expansion condensing temperature setting value.

8. The heat pump direct expansion rotary dehumidification system according to claim 6, characterized in that: The regeneration side control mechanism includes: The regeneration side fresh air temperature collected by the regeneration side fresh air temperature sensor is compared with the regeneration side fresh air temperature setting value, and when the regeneration side fresh air temperature does not reach the regeneration side fresh air temperature setting value, the auxiliary heater opening is controlled to make the regeneration side fresh air temperature reach the regeneration side fresh air temperature setting value; Controlling the operation of the medium-temperature heat pump module, the medium-temperature heat pump electronic expansion valve is automatically adjusted according to the suction superheat, so that the suction superheat is consistent with the first suction superheat setting value; wherein the first suction superheat setting value is the same as the regeneration side fresh air temperature setting value; Controlling the operation of the high-temperature heat pump module, the high-temperature heat pump electronic expansion valve is automatically adjusted according to the suction superheat, so that the suction superheat is consistent with the second suction superheat setting value; wherein the second suction superheat setting value is the same as the regeneration side fresh air temperature setting value; The supply air humidity of the rotor processing side collected by the supply air humidity sensor of the rotor processing side is compared with the supply air humidity setting value of the rotor processing side. When the supply air humidity of the rotor processing side is inconsistent with the supply air humidity setting value of the rotor processing side, the opening of the regeneration heater is controlled to adjust so that the supply air humidity of the rotor processing side is consistent with the supply air humidity setting value of the rotor processing side; Controlling the regeneration zone of the wheel to desorb, so that the outlet air temperature of the wheel regeneration side collected by the outlet air temperature sensor of the wheel regeneration side increases and the outlet air humidity of the wheel regeneration side collected by the outlet air humidity sensor of the wheel regeneration side decreases; The high-temperature heat pump evaporator and the medium-temperature heat pump evaporator are controlled to recover heat from the air at the outlet of the rotor regeneration zone, so that the exhaust humidity collected by the exhaust humidity sensor increases and the exhaust temperature collected by the exhaust temperature sensor decreases, so as to discharge the low-temperature and high-humidity air that meets the requirements to the outside through the regeneration fan.

9. A heat pump direct expansion rotor dehumidification control method, characterized in that: Applied to the heat pump direct expansion rotary dehumidification system as claimed in any one of claims 1 to 8, the method comprises: Acquire the temperature and humidity data of the processing side and the temperature and humidity data of the regeneration side collected in real time by the processing side sensor module and the regeneration side sensor module; According to the temperature and humidity data of the processing side, the temperature and humidity data of the regeneration side and the preset temperature and humidity set values, the front surface cooler, the rear surface cooler, the direct expansion cryogenic module, the regeneration heater, the auxiliary heater, the medium temperature heat pump module and the high temperature heat pump module are controlled to make corresponding adjustments, so that the air with the required supply temperature and humidity is delivered into the room on the processing side and the air with the required low temperature and high humidity is discharged outdoors on the regeneration side.

10. An electronic terminal, characterized in that: include: one or more memories and one or more processors; The one or more memories are used to store computer programs; The one or more processors, connected to the memory, are configured to run the computer program to perform the method according to claim 9.

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