Temperature-controlled heat recovery dehumidifier system

Abstract

The application discloses a temperature control heat recovery type dehumidifier system and relates to the field of dehumidifiers. The system comprises an evaporator, a reheating coil, a humidifier, a heat recovery plate exchanger, an energy storage water tank, a compressor, a condenser and a control unit. The evaporator, the reheating coil, the humidifier, the heat recovery plate exchanger, the energy storage water tank, the compressor and the condenser are sequentially connected through control valves. The evaporator, the reheating coil, the humidifier, the heat recovery plate exchanger, the energy storage water tank, the compressor and the condenser are cooperatively controlled through the control unit. The application realizes the cooperation of the triple functions of heating, energy storage and humidification. The waste heat recovery mode can be converted into a standard heat pump heating cycle, the indoor rapid heating demand is preferentially met, all modes are switched through the same set of system components, and the integration and the overall energy efficiency ratio of the equipment are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of dehumidifiers, and more specifically, to a temperature-controlled heat recovery dehumidifier system. Background Technology

[0002] A dehumidifier is a device that removes moisture from the air through physical or chemical means. Its basic working principle is to condense water vapor in the air into water using a cooling process, which is then released, thereby reducing the humidity in the air. The most common dehumidifiers are based on the condensation principle, similar to the cooling process of an air conditioner. Its main components include a compressor, condenser, evaporator, fan, and water tank. These devices are commonly used to solve problems caused by excessive humidity, such as mold growth, stagnant air, and dampness in items, and are widely used in homes, offices, and industrial settings.

[0003] Existing dehumidifier systems cannot achieve the coordinated operation of temperature control, heat recovery, energy storage, and humidification. Their drawback lies in their inability to flexibly respond to changing environmental demands. This not only prevents them from simultaneously meeting the comprehensive requirements of temperature, humidity, and energy recovery, but also limits the system's application scenarios and overall efficiency. Furthermore, dehumidifier systems typically neglect waste heat recovery, leading to energy waste, especially when prolonged humidification or heating is required, failing to efficiently utilize the system's internal heat energy.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] In response to the problems in related technologies, this invention proposes a temperature-controlled heat recovery dehumidifier system to overcome the aforementioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by the present invention is as follows:

[0007] The temperature-controlled heat recovery dehumidifier system includes an evaporator, reheat coil, humidifier, heat recovery plate heat exchanger, energy storage tank, compressor, condenser, and control unit. The evaporator, reheat coil, humidifier, heat recovery plate heat exchanger, energy storage tank, compressor, and condenser are connected sequentially via control valve groups. The control unit enables coordinated control among the evaporator, reheat coil, humidifier, heat recovery plate heat exchanger, energy storage tank, compressor, and condenser.

[0008] Preferably, the control valve assembly includes a hot water solenoid valve one, a reheat electronic expansion valve, a humidity control solenoid valve, an electronic expansion valve, a four-way valve, a hot water electronic expansion valve, a hot water solenoid valve two, a reheat distribution valve one, and a reheat distribution valve two.

[0009] The compressor is connected to the first port of reheat distribution valve 1, the second port of reheat distribution valve 1 is connected to the first port of reheat distribution valve 2, the third port of reheat distribution valve 1 is connected to the reheat coil, the second port of reheat distribution valve 2 is connected to the first port of the four-way valve, the third port of reheat distribution valve 2 is connected to one end of the hot water electronic expansion valve via a heat recovery heat exchanger, the other end of the heat recovery heat exchanger is connected to the energy storage tank and to the humidifier via a humidity control solenoid valve, the other end of the hot water electronic expansion valve is connected to hot water solenoid valve 1 and hot water solenoid valve 2, the other end of hot water solenoid valve 1 is connected to the evaporator and the electronic expansion valve, the electronic expansion valve is connected to the reheat coil via the reheat electronic expansion valve, and is connected to hot water solenoid valve 2 and the condenser, the other end of the condenser is connected to the fourth port of the four-way valve, the third port of the four-way valve is connected to the compressor, and the second port of the four-way valve is connected to the evaporator.

[0010] Preferably, the control unit includes a waste heat recovery module for cooling and dehumidification, a total heat recovery module for cooling and dehumidification, a waste heat recovery module for heating and humidification, and a module for heating and humidification without waste heat recovery.

[0011] Among them, the waste heat recovery module of the refrigeration and dehumidification section is used to realize the waste heat recovery of the refrigeration and dehumidification section of high temperature and high pressure gas.

[0012] The refrigeration, dehumidification, and total heat recovery module is used to achieve refrigeration, dehumidification, and total heat recovery of high-temperature and high-pressure gases.

[0013] The waste heat recovery module for heating and humidifying is used to recover waste heat from the heating and humidifying process of high-temperature and high-pressure gases.

[0014] The heating and humidification module with no waste heat recovery is used to achieve heating and humidification of high-temperature and high-pressure gases without waste heat recovery.

[0015] Preferably, the waste heat recovery module of the cold dehumidification section includes:

[0016] The high-temperature and high-pressure gas is delivered to the first reheat distribution valve through the compressor, and then delivered to the second reheat distribution valve and the reheat coil through the first reheat distribution valve.

[0017] The reheat distribution valve 2 delivers a portion of the gas to the heat recovery plate heat exchanger, forming the first branch fluid. The gas then undergoes heat exchange with the fluoride water in the energy storage tank through the heat recovery plate heat exchanger to complete the heat exchange. The remaining gas is then delivered to the condenser through the four-way valve to condense into liquid and form the second branch fluid.

[0018] The first branch fluid passes sequentially through the hot water electronic expansion valve and the second hot water solenoid valve, and is combined with the second branch fluid and the third branch fluid output from the reheat coil through the reheat electronic expansion valve.

[0019] The collected fluid is transported to the evaporator via an electronic expansion valve for evaporation and heat absorption, thereby achieving refrigeration, dehumidification, and reheating. Finally, the fluid produced by the evaporator returns to the compressor via a four-way valve for repeated cycles.

[0020] Preferably, the refrigeration, dehumidification, and total heat recovery module includes:

[0021] The high-temperature and high-pressure gas is delivered to the first reheat distribution valve through the compressor, and then delivered to the second reheat distribution valve and the reheat coil through the first reheat distribution valve.

[0022] The reheat distribution valve 2 delivers all the gas to the heat recovery plate heat exchanger, forming the first branch fluid, and then conducts fluoride-water heat exchange between the heat recovery plate heat exchanger and the energy storage tank to complete the heat exchange.

[0023] The first branch fluid passes through the hot water electronic expansion valve and the hot water solenoid valve in sequence and is condensed into liquid, and then merges with the second branch fluid output from the reheat coil through the reheat electronic expansion valve.

[0024] The collected fluid is transported to the evaporator through the electronic expansion valve to evaporate and absorb heat, thereby achieving refrigeration, dehumidification and reheating. Finally, the fluid produced by the evaporator returns to the compressor through the four-way valve for repeated cycles.

[0025] Preferably, the waste heat recovery module for the heating and humidification section includes:

[0026] The high-temperature and high-pressure gas is delivered to reheat distribution valve one by the compressor, and all the high-temperature and high-pressure gas is delivered to reheat distribution valve two through reheat distribution valve one.

[0027] The reheat distribution valve 2 delivers a portion of the gas to the heat recovery plate heat exchanger, forming the first branch fluid. The fluid then undergoes fluorine-water heat exchange between the heat recovery plate heat exchanger and the energy storage tank. After the fluorine-water heat exchange is completed, the fluid passes through the humidity control solenoid valve and enters the humidifier to achieve indoor humidification.

[0028] The remaining gas is then transported to the evaporator via a four-way valve to condense into liquid and form the second branch fluid;

[0029] The fluid in the first branch passes through the hot water electronic expansion valve and the hot water solenoid valve in sequence and is then combined with the fluid in the second branch. The combined fluid is then transported to the condenser through the electronic expansion valve to achieve heating and temperature rise on the indoor unit side. Finally, the fluid generated by the condenser returns to the compressor through the four-way valve for reciprocating circulation.

[0030] Preferably, the heating and humidification module with no waste heat recovery includes:

[0031] The high-temperature and high-pressure gas is delivered to reheat distribution valve one by the compressor, and all the high-temperature and high-pressure gas is delivered to reheat distribution valve two through reheat distribution valve one.

[0032] The reheat distribution valve 2 delivers all the gas to the four-way valve, and then through the four-way valve to the evaporator to condense into liquid. The condensed liquid is then delivered to the condenser through the electronic expansion valve to achieve heating and temperature rise on the indoor unit side. Finally, the fluid produced by the condenser returns to the compressor through the four-way valve for reciprocating circulation.

[0033] Preferably, heat exchange between the fluoride-water exchanger and the energy storage tank is performed via a heat recovery plate heat exchanger. Simultaneously, the fluid after the fluoride-water heat exchange is completed enters the humidifier via a humidity-controlled solenoid valve to achieve indoor humidification, including:

[0034] The reheat distribution valve 2 delivers high-temperature and high-pressure gas to the heat recovery plate heat exchanger, and the heat is transferred to the energy storage tank through the heat recovery plate heat exchanger, so as to raise the temperature of the water in the energy storage tank.

[0035] The intensity of heat source interference in the energy storage tank is predicted, and the opening of the humidity control solenoid valve is adjusted using a PID controller. After the humidity control solenoid valve is adjusted, the hot water in the energy storage tank flows through the humidity control solenoid valve into the humidifier.

[0036] After hot water enters the humidifier, it releases the water into the room through a spray to regulate the indoor humidity.

[0037] Preferably, the intensity of heat source interference in the energy storage tank is predicted, and the opening of the humidity control solenoid valve is adjusted using a PID controller. After the humidity control solenoid valve is adjusted, the hot water in the energy storage tank flows through the humidity control solenoid valve into the humidifier, including:

[0038] Based on the historical operating data of the energy storage tank, a temperature decay model of the energy storage tank is constructed, and the intensity of heat source interference of the energy storage tank in the future time period is predicted by the temperature decay model of the energy storage tank.

[0039] The humidification compensation required to counteract the heat source interference intensity is calculated, and the feedback control quantity is calculated by the PID controller based on the deviation between the preset indoor humidity and the actual indoor humidity. The humidification compensation and the feedback control quantity are superimposed to generate the optimal humidity control solenoid valve opening command.

[0040] The optimal humidity control solenoid valve opening command is sent to the humidity control solenoid valve to adjust the opening. After the humidity control solenoid valve is adjusted, the hot water in the energy storage tank enters the humidifier through the humidity control solenoid valve at a controlled flow rate.

[0041] Preferably, based on historical operating data of the energy storage tank, a temperature decay model for the energy storage tank is constructed. The intensity of heat source interference in the energy storage tank over future time periods is predicted using this model, including:

[0042] Heat load fluctuation characteristics and time decay characteristics are extracted from the historical operation data of the energy storage tank, and correlation analysis is performed on the heat load fluctuation characteristics and time decay characteristics.

[0043] Based on the correlation analysis results, weights were assigned to the heat load fluctuation characteristics and time decay characteristics, and the heat load fluctuation characteristics and time decay characteristics were input into the gradient boosting tree model and the ridge regression model, respectively.

[0044] The outputs of the gradient boosting tree model and the ridge regression model are weighted and fused to obtain the heat source interference intensity of the energy storage tank in the future time period.

[0045] The beneficial effects of this invention are as follows:

[0046] 1. This invention achieves efficient energy management under different operating conditions through a multi-valve collaborative circulation loop design. During summer cooling and dehumidification, the partial waste heat recovery mode can divert the high-temperature refrigerant, using the heat recovery plate heat exchanger to charge the energy storage tank to store waste heat, and using the reheat coil to precisely reheat the dehumidified air, avoiding the high reheat energy consumption and heat cancellation problems of conventional dehumidifiers. At the same time, the full heat recovery mode can recover all the condensation heat to heat the water tank, maximizing energy utilization. During winter heating and humidification, the partial waste heat recovery mode can guide part of the refrigerant to flow through the heat recovery plate heat exchanger to heat the water tank, while using the condensation heat of another part of the refrigerant for indoor heating, and using the waste heat of the Freon after heat exchange to provide a stable heat source for the humidifier, realizing the synergy of heating, energy storage and humidification functions. The no-waste-heat-recovery mode can be converted into a standard heat pump heating cycle, prioritizing the need for rapid indoor heating. All modes are switched through the same set of system components, which greatly improves the integration of the equipment and the overall energy efficiency ratio throughout the year.

[0047] 2. This invention constructs a hybrid temperature decay model that integrates gradient boosting tree and ridge regression by mining historical data. This model accurately predicts the decay trend of the energy storage tank's ability as a heat source and the intensity of its interference, thereby calculating a forward-looking humidification compensation amount. Combined with the feedback control amount generated by the PID controller based on the real-time humidity deviation, the two are superimposed to generate the optimal valve position command, dynamically adjusting the opening of the humidity control solenoid valve. This allows the hot water in the energy storage tank to enter the humidifier at a precisely calculated flow rate. As a result, while rapidly and stably regulating indoor humidity, the system's ability to resist disturbances caused by changes in the internal heat source state and external environmental interference, as well as its overall energy efficiency, are significantly improved. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of a temperature-controlled heat recovery dehumidifier system according to an embodiment of the present invention;

[0050] Figure 2 This is a schematic block diagram of the control unit in a temperature-controlled heat recovery dehumidifier system according to an embodiment of the present invention.

[0051] In the picture:

[0052] 1. Evaporator; 2. Reheat coil; 3. Humidifier; 4. Heat recovery plate heat exchanger; 5. Energy storage tank; 6. Compressor; 7. Condenser; 801. Hot water solenoid valve one; 802. Reheat electronic expansion valve; 803. Humidity control solenoid valve; 804. Electronic expansion valve; 805. Four-way valve; 806. Hot water electronic expansion valve; 807. Hot water solenoid valve two; 808. Reheat distribution valve one; 809. Reheat distribution valve two; 9. Control unit; 901. Waste heat recovery module for refrigeration and dehumidification; 902. Total heat recovery module for refrigeration and dehumidification; 903. Waste heat recovery module for heating and humidification; 904. Module with no waste heat recovery for heating and humidification. Detailed Implementation

[0053] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention.

[0054] According to an embodiment of the present invention, a temperature-controlled heat recovery dehumidifier system is provided.

[0055] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1 As shown, according to the configuration method of an embodiment of the present invention, the system includes an evaporator 1, a reheat coil 2, a humidifier 3, a heat recovery heat exchanger 4, an energy storage tank 5, a compressor 6, a condenser 7, and a control unit; wherein, the evaporator 1, the reheat coil 2, the humidifier 3, the heat recovery heat exchanger 4, the energy storage tank 5, the compressor 6, and the condenser 7 are sequentially connected through a control valve group; the control unit realizes the coordinated control among the evaporator 1, the reheat coil 2, the humidifier 3, the heat recovery heat exchanger 4, the energy storage tank 5, the compressor 6, and the condenser 7.

[0056] The control valve assembly includes hot water solenoid valve 1 801, reheat electronic expansion valve 802, humidity control solenoid valve 803, electronic expansion valve 804, four-way valve 805, hot water electronic expansion valve 806, hot water solenoid valve 2 807, reheat distribution valve 1 808, and reheat distribution valve 2 809.

[0057] One end of the compressor 6 is connected to the first port of reheat distribution valve 808; the second port of reheat distribution valve 808 is connected to the first port of reheat distribution valve 809; the third port of reheat distribution valve 808 is connected to the reheat coil 2; the second port of reheat distribution valve 809 is connected to the first port of four-way valve 805; the third port of reheat distribution valve 809 is connected to one end of hot water electronic expansion valve 806 via heat recovery heat exchanger 4; the other end of heat recovery heat exchanger 4 is connected to energy storage tank 5 and then to humidifier via humidity control solenoid valve 803. The other end of the hot water electronic expansion valve 806 is connected to the hot water solenoid valve 801 and the hot water solenoid valve 807 respectively. The other end of the hot water solenoid valve 801 is connected to the evaporator 1 and the electronic expansion valve 804 respectively. The electronic expansion valve 804 is connected to the reheat coil 2 via the reheat electronic expansion valve 802, and is also connected to the hot water solenoid valve 807 and the condenser 7. The other end of the condenser 7 is connected to the fourth port of the four-way valve 805. The third port of the four-way valve 805 is connected to the compressor 6. The second port of the four-way valve 805 is connected to the evaporator 1.

[0058] Among them, such as Figure 2 As shown, the control unit 9 includes a waste heat recovery module 901 for cooling and dehumidification, a total heat recovery module 902 for cooling and dehumidification, a waste heat recovery module 903 for heating and humidification, and a waste heat recovery module 904 for heating and humidification without waste heat recovery.

[0059] Among them, the waste heat recovery module 901 of the refrigeration and dehumidification section is used to realize the waste heat recovery of the refrigeration and dehumidification section of high temperature and high pressure gas.

[0060] The refrigeration, dehumidification, and total heat recovery module 902 is used to achieve refrigeration, dehumidification, and total heat recovery of high-temperature and high-pressure gases.

[0061] The waste heat recovery module 903 for heating and humidification is used to recover waste heat from the heating and humidification of high-temperature and high-pressure gases.

[0062] The heating and humidification module 904 is used to achieve heating and humidification of high-temperature and high-pressure gases without waste heat recovery.

[0063] The waste heat recovery module 901 for refrigeration and dehumidification includes: high-temperature and high-pressure gas is delivered to reheat distribution valve 808 via compressor 6, and the high-temperature and high-pressure gas is delivered to reheat distribution valve 809 and reheat coil 2 via reheat distribution valve 808; reheat distribution valve 809 delivers part of the gas to heat recovery plate heat exchanger 4 to form the first branch fluid, and completes heat exchange through fluoride water exchange between heat recovery plate heat exchanger 4 and energy storage tank 5; the remaining gas is delivered to condenser 7 via four-way valve 805 to condense into liquid and form the second branch fluid; the first branch fluid passes through hot water electronic expansion valve 806, hot water solenoid valve 807 and the second branch fluid and the third branch fluid output by reheat coil 2 via reheat electronic expansion valve 802 and then converges; the converged fluid is delivered to evaporator 1 via electronic expansion valve 804 for evaporation and heat absorption to achieve refrigeration, dehumidification and reheating; finally, the fluid generated by evaporator 1 returns to compressor 6 via four-way valve 805 for reciprocating circulation.

[0064] The refrigeration, dehumidification, and total heat recovery module 902 includes: a compressor 6 delivers high-temperature, high-pressure gas to a reheat distribution valve 808, and the reheat distribution valve 808 delivers the high-temperature, high-pressure gas to a reheat distribution valve 809 and a reheat coil 2 respectively; the reheat distribution valve 809 delivers all the gas to a heat recovery heat exchanger 4, forming a first branch fluid, and the heat recovery heat exchanger 4 and the energy storage tank 5 exchange fluorine and water heat to complete the heat exchange; the first branch fluid passes through a hot water electronic expansion valve 806 and a hot water solenoid valve 807 in sequence to condense into liquid, and is combined with the second branch fluid output from the reheat coil 2 through the reheat electronic expansion valve 802; the combined fluid is delivered to the evaporator 1 through the electronic expansion valve 804 to evaporate and absorb heat, so as to achieve refrigeration, dehumidification, and reheating; finally, the fluid generated by the evaporator 1 returns to the compressor 6 through a four-way valve 805 for repeated circulation.

[0065] The waste heat recovery module 903 for heating and humidification includes: high-temperature and high-pressure gas is delivered to reheat distribution valve 808 via compressor 6, and all the high-temperature and high-pressure gas is delivered to reheat distribution valve 809 via reheat distribution valve 808; reheat distribution valve 809 delivers part of the gas to heat recovery plate heat exchanger 4 to form the first branch fluid, and performs refrigerant-water heat exchange between heat recovery plate heat exchanger 4 and energy storage water tank 5. At the same time, the fluid after the refrigerant-water heat exchange is completed enters humidifier 3 through humidity control solenoid valve 803 to achieve indoor humidification; the remaining gas is delivered to evaporator 1 through four-way valve 805 to condense into liquid and form the second branch fluid; the first branch fluid passes through hot water electronic expansion valve 806 and hot water solenoid valve 801 in sequence and is combined with the second branch fluid. The combined fluid is delivered to condenser 7 through electronic expansion valve 804 to achieve heating and temperature rise on the indoor unit side. Finally, the fluid generated by condenser 7 returns to compressor 6 through four-way valve 805 for reciprocating circulation.

[0066] The heating and humidification module 904 includes: a compressor 6 delivers high-temperature and high-pressure gas to a reheat distribution valve 808, and the reheat distribution valve 808 delivers all the high-temperature and high-pressure gas to a reheat distribution valve 809; the reheat distribution valve 809 delivers all the gas to a four-way valve 805, and the gas is then delivered to the evaporator 1 through the four-way valve 805 to condense into liquid. The condensed liquid is then delivered to the condenser 7 through the electronic expansion valve 804 to achieve heating and temperature rise on the indoor unit side. Finally, the fluid generated by the condenser 7 returns to the compressor 6 through the four-way valve 805 for repeated circulation.

[0067] It should be noted that the waste heat recovery of the summer cooling and dehumidification section (equivalent to the waste heat recovery module 901 of the cooling and dehumidification section): The high-temperature and high-pressure gas from the compressor 6 is adjusted by the reheat distribution valve 1 808 according to the outlet air temperature to the exhaust volume of the reheat coil 2 and the reheat distribution valve 2 809. The reheat distribution valve 2 809 adjusts the exhaust volume between the heat recovery plate heat exchanger 4 and the four-way valve 805. The heat recovery plate heat exchanger 4 and the condenser 7 achieve refrigerant-water heat exchange (the heat recovery volume is controlled by an external variable frequency water pump). The remaining exhaust gas is distributed to the condenser 7 through the four-way valve 805. The condenser 7 completely condenses into liquid and passes through the reheat coil 2 via the reheat electronic expansion valve 802. At the same time, the heat recovery plate heat exchanger 4 passes through the hot water electronic expansion valve 806 and the solenoid valve 2, and the liquid is combined and sent to the evaporator 1 via the electronic expansion valve 804 for evaporation and heat absorption to achieve cooling, dehumidification and reheating. Finally, the evaporator 1 returns to the compressor 6 via the four-way valve 805 for repeated cycles.

[0068] Summer cooling and dehumidification total heat recovery (equivalent to cooling and dehumidification total heat recovery module 902): High-temperature and high-pressure gas from compressor 6 is sent to reheat distribution valve 1 808, which adjusts the exhaust volume according to the outlet air temperature. Reheat distribution valve 2 809 adjusts the exhaust volume to the superheat recovery heat exchanger 4. The heat recovery heat exchanger 4 and condenser 7 achieve complete refrigerant-water heat exchange (external variable frequency water pump). The superheated water electronic expansion valve 806 opens solenoid valve 2 to completely condense into liquid and is collected by reheat electronic expansion valve 802 and then by electronic expansion valve 804 to evaporator 1 for evaporation and heat absorption to achieve cooling, dehumidification and reheating. Finally, evaporator 1 returns to compressor 6 via four-way valve 805 in a reciprocating cycle.

[0069] Winter heating and humidification waste heat recovery (equivalent to heating and humidification waste heat recovery module 903): High-temperature and high-pressure gas from compressor 6 is directed to reheat distribution valve 1 808, which controls all exhaust to reheat distribution valve 2 809. The exhaust volume between heat recovery plate heat exchanger 4 and four-way valve 805 is adjusted. Heat recovery plate heat exchanger 4 and condenser 7 achieve refrigerant-water heat exchange (external variable frequency water pump controls the heat recovery volume). The remaining exhaust is distributed to evaporator 1 through four-way valve 805. Evaporator 1 completely condenses into liquid and, together with heat recovery plate heat exchanger 4, passes through hot water electronic expansion valve 806 and hot water solenoid valve 1 801, and then through electronic expansion valve 804 to condenser 7 (actually the evaporator), achieving indoor unit heating and temperature rise (at the same time, humidity control solenoid valve 803 is opened, and humidifier 3 humidifies the room). Finally, condenser 7 returns to compressor 6 through four-way valve 805 in a reciprocating cycle.

[0070] Winter heating and humidification without waste heat recovery (equivalent to heating and humidification without waste heat recovery module 904): Compressor 6 sends high-temperature and high-pressure gas to reheat distribution valve 1 808, which controls all the exhaust gas to reheat distribution valve 2 809. Reheat distribution valve 2 809 adjusts all the exhaust gas to four-way valve 805. Four-way valve 805 leads to evaporator 1. Evaporator 1 completely condenses into liquid and passes through electronic expansion valve 804 to condenser 7 (actually the evaporator), achieving heating and temperature rise on the indoor unit side (at the same time, humidity control solenoid valve 803 opens, and humidifier 3 humidifies the room). Finally, condenser 7 returns to compressor 6 via four-way valve 805, and the cycle repeats.

[0071] The process involves heat exchange between a heat recovery plate heat exchanger 4 and an energy storage water tank 5, followed by fluid passing through a humidity control solenoid valve 803 into the humidifier 3 to achieve indoor humidification.

[0072] The reheat distribution valve 2 809 delivers high-temperature and high-pressure gas to the heat recovery plate heat exchanger 4. The heat is transferred to the energy storage tank 5 through the heat recovery plate heat exchanger 4, so that the temperature of the water in the energy storage tank 5 rises.

[0073] The intensity of heat source interference in the energy storage tank 5 is predicted, and the opening of the humidity control solenoid valve 803 is adjusted using a PID controller. After the humidity control solenoid valve 803 is adjusted, the hot water in the energy storage tank 5 flows through the humidity control solenoid valve 803 into the humidifier 3.

[0074] After hot water enters the humidifier 3, it releases the water into the room through a spray to regulate the indoor humidity.

[0075] The process includes predicting the intensity of heat source interference in the energy storage tank 5 and adjusting the opening of the humidity control solenoid valve 803 using a PID controller. After the humidity control solenoid valve 803 is adjusted, the hot water in the energy storage tank 5 flows through the humidity control solenoid valve 803 into the humidifier 3.

[0076] Based on the historical operating data of the energy storage tank 5, a temperature decay model of the energy storage tank 5 is constructed, and the intensity of heat source interference of the energy storage tank 5 in the future time period is predicted by the temperature decay model of the energy storage tank 5.

[0077] The humidification compensation required to counteract the intensity of heat source interference is calculated, and the feedback control quantity is calculated by the PID controller based on the deviation between the preset indoor humidity and the actual indoor humidity. The humidification compensation and the feedback control quantity are superimposed to generate the optimal opening command of the humidity control solenoid valve 803.

[0078] It should be noted that the humidification compensation required to offset the intensity of heat source interference is calculated, and the feedback control quantity is calculated by the PID controller based on the deviation between the preset indoor humidity and the actual indoor humidity. The humidification compensation and the feedback control quantity are superimposed to generate the optimal opening command for the humidity control solenoid valve 803, including:

[0079] Step 1: Process the historical temperature data of the energy storage tank 5 through the echo state network, and combine it with the current environmental conditions (such as temperature, humidity and flow rate) to make multi-step predictions of the heat source interference intensity in the future time period. Output the predicted heat source interference intensity and its uncertainty. This part of the output will provide feedforward information for the calculation of humidification compensation.

[0080] Step 2: Based on the predicted heat source interference intensity and uncertainty from Step 1, calculate the difference between the target humidity and the predicted humidity using a humid air model to determine the required humidification amount. Map this humidification amount through the humidifier identification model to obtain the corresponding opening command for the humidity control solenoid valve 803. The output of this step is the feedforward control quantity for humidification compensation, preparing for the next step of PID feedback control.

[0081] The humidifier identification model is used to convert the required humidification amount into corresponding solenoid valve opening commands, so as to accurately control the output of humidifier 3. The working principle of humidifier 3 is based on the input water flow rate and evaporation temperature to generate the required humidity change, and the opening of the humidity control solenoid valve 803 directly determines the water flow rate, thus affecting humidity regulation. The task of the identification model is to find the mapping relationship between input and output, ensuring that the system can adjust the solenoid valve opening according to the required humidity change.

[0082] Specifically, the humidifier identification model is an Extreme Learning Machine (ELM) model. An ELM is a fast-training single-hidden-layer feedforward neural network that randomly generates input weights and uses the least squares method to solve for the output weights. It has the advantages of high computational efficiency and fast convergence speed, making it suitable for the humidifier identification task. Specifically, it includes:

[0083] Actual operational data is collected, including humidification output, humidifier temperature, humidity, and other environmental parameters under different opening degrees of the humidity-controlled solenoid valve 803. A training model is then developed to predict the output humidification using this input data (solenoid valve opening, water flow rate, temperature, etc.). After model training, the required humidification amount can be mapped to the corresponding opening degree of the humidity-controlled solenoid valve 803 based on real-time feedback of humidification demand and environmental changes.

[0084] Step 3: Based on the deviation between the preset indoor humidity and the actual humidity, the PID controller calculates the feedback control quantity. Combining this with the humidification compensation quantity calculated in Step 2, the weights are adjusted according to the uncertainty. The humidification compensation and feedback control quantities are then superimposed to generate the optimal opening command for the humidity control solenoid valve 803. This not only effectively eliminates humidity fluctuations caused by heat source interference but also ensures system stability.

[0085] Step 4: The result of superimposing the humidification compensation and PID feedback control quantities is transmitted to the humidity control solenoid valve 803. The saturation process is performed by the capacity constraint to ensure the stable operation of the humidification system. Finally, the solenoid valve opening command is executed to ensure that the indoor humidity is kept within the target range. The system continuously makes dynamic adjustments based on the actual humidity.

[0086] It should be noted that the function of the capacity constraint is to ensure that the humidification system does not exceed the physical or operational limits of the system during actual operation, to prevent excessive changes in the opening of the solenoid valve or to exceed the safe range, and to ensure the stability and safety of the humidification system.

[0087] In a humidification system, the opening degree of the humidity control solenoid valve 803 determines the water flow rate, which in turn affects the humidification effect. To prevent excessively high or low humidity due to the solenoid valve opening being too large or too small, a capacity constraint device ensures that the opening degree of the humidity control solenoid valve 803 remains within a reasonable range by setting maximum and minimum limits.

[0088] Capability constraint devices typically use saturation or threshold functions to correct humidification compensation and PID feedback control values. When the calculated solenoid valve opening command exceeds a preset maximum or minimum value, the capability constraint device will limit it within that range. Specifically:

[0089] The capacity constraint will compare the input opening command of the humidity control solenoid valve 803 with the system's capacity limits (such as the maximum flow capacity of the humidity control solenoid valve 803 and the maximum humidification capacity of the humidifier 3). If the opening command of the humidity control solenoid valve 803 exceeds the set maximum value, it will be limited to the maximum value; if it is lower than the set minimum value, it will be limited to the minimum value.

[0090] In practice, the capacity constraint is usually processed at the last layer of the control system. That is, after the PID controller and humidification compensation calculate the opening command of the humidity control solenoid valve 803, the capacity constraint will saturate it according to the capacity limit of the humidity control solenoid valve 803. The specific implementation can be achieved through the "saturation" operation in the programming.

[0091] For example, if the maximum opening of the humidity control solenoid valve 803 is 100% and the minimum opening is 0%, any control quantity whose calculated result exceeds this range will be automatically adjusted to an effective range between 0% and 100%. In this way, the capacity constraint ensures the stable operation of the humidification system, preventing system instability or damage caused by excessively large or small control quantities of the humidity control solenoid valve 803. Simultaneously, the capacity constraint also ensures that the system operates efficiently within its normal operating range, preventing resource waste or system overload due to overly aggressive control.

[0092] The optimal opening command of the humidity control solenoid valve 803 is sent to the humidity control solenoid valve 803. The opening of the humidity control solenoid valve 803 is adjusted. After the humidity control solenoid valve 803 is adjusted, the hot water in the energy storage tank 5 enters the humidifier 3 through the humidity control solenoid valve 803 at a controlled flow rate.

[0093] Based on historical operating data of energy storage tank 5, a temperature decay model for energy storage tank 5 is constructed. This model is used to predict the intensity of heat source interference in energy storage tank 5 over future periods, including:

[0094] Heat load fluctuation characteristics and time decay characteristics were extracted from the historical operating data of energy storage tank 5, and correlation analysis was performed on the heat load fluctuation characteristics and time decay characteristics.

[0095] It should be noted that historical operating data of the energy storage tank 5 is acquired, including information such as temperature, flow rate, time, ambient temperature, and humidity. Heat load fluctuations are captured by calculating changes in heat input and output, the rate of temperature change, and power consumption. Time decay characteristics are extracted to analyze the trend of temperature change over time, and the rate and pattern of temperature decay are obtained using an exponential decay model or a moving average method based on a time window. After feature extraction, data preprocessing is performed to remove noise and outliers, and the data is standardized or normalized. Statistical analysis methods such as Pearson correlation analysis or mutual information method are used to evaluate the correlation between heat load fluctuation characteristics and time decay characteristics, and to analyze their dynamic relationship under different time windows.

[0096] Based on the correlation analysis results, weights were assigned to the heat load fluctuation characteristics and time decay characteristics, and the heat load fluctuation characteristics and time decay characteristics were input into the gradient boosting tree model and the ridge regression model, respectively.

[0097] The outputs of the gradient boosting tree model and the ridge regression model are weighted and fused to obtain the heat source interference intensity of the energy storage tank 5 in the future time period.

[0098] It should be noted that gradient boosting trees are an ensemble learning method that iteratively trains multiple decision trees, with each tree optimizing based on the residuals of the previous tree. It excels at handling nonlinear relationships and feature interactions. Ridge regression is a linear regression model with L2 regularization. It avoids multicollinearity and overfitting by adding a penalty term of the sum of squared parameters to the loss function, making it suitable for capturing linear relationships between features.

[0099] By using correlation analysis to reasonably allocate weights for heat load fluctuation characteristics and time decay characteristics, the two types of characteristics can be fully utilized in the model. By using gradient boosting trees to capture complex nonlinear relationships and combining them with ridge regression to stabilize the linear part, the prediction results of the two are then weighted and fused together, which can effectively improve the accuracy and robustness of predicting the heat source interference intensity of the energy storage tank 5 in the future time period, thus providing a reliable basis for subsequent control strategies.

[0100] In summary, by utilizing the above-mentioned technical solution of this invention, the present invention achieves efficient energy management under different operating conditions through a multi-valve coordinated circulation loop design. During summer cooling and dehumidification, the partial waste heat recovery mode can divert the high-temperature refrigerant, using the heat recovery plate heat exchanger 4 to charge the energy storage tank 5 to store waste heat, and also using the reheat coil 2 to precisely reheat the dehumidified air, avoiding the high reheat energy consumption and heat-cold offsetting problems of conventional dehumidifiers. Simultaneously, the full heat recovery mode can recover all condensation heat for heating the water tank, maximizing energy utilization. During winter heating and humidification, the partial waste heat recovery mode can guide part of the refrigerant through the heat recovery plate heat exchanger 4 to heat the water tank, while using the condensation heat of another portion of the refrigerant for indoor heating, and utilizing the waste heat of the refrigerant after heat exchange to provide a stable heat source for the humidifier 3, achieving synergy of heating, energy storage, and humidification functions without waste. The heat recovery mode can be converted into a standard heat pump heating cycle, prioritizing the need for rapid indoor heating. All modes are switched through the same set of system components, significantly improving the integration of the equipment and the overall energy efficiency ratio throughout the year. This invention constructs a hybrid temperature decay model that integrates gradient boosting tree and ridge regression by mining historical data, accurately predicting the decay trend of the energy storage tank 5 as a heat source and its interference intensity, and then calculating the forward-looking humidification compensation amount. Combined with the feedback control amount generated by the PID controller based on the real-time humidity deviation, the two are superimposed to generate the optimal valve position command, dynamically adjusting the opening of the humidity control solenoid valve 803, so that the hot water in the energy storage tank 5 can enter the humidifier 3 at a precisely calculated flow rate. Thus, while rapidly and stably regulating the indoor humidity, it significantly improves the system's resistance to changes in the internal heat source state and external environmental interference, as well as its overall energy efficiency.

[0101] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A temperature-controlled heat recovery dehumidifier system, characterized by, The system comprises an evaporator, a reheating coil, a humidifier, a heat recovery plate heat exchanger, an energy storage water tank, a compressor, a condenser and a control unit; The control unit realizes the cooperative control among the evaporator, the reheating coil, the humidifier, the heat recovery plate heat exchanger, the energy storage water tank, the compressor and the condenser; The control unit comprises a heating and humidifying part waste heat recovery module for realizing the heating and humidifying part waste heat recovery of high-temperature and high-pressure gas, and specifically comprises: The compressor delivers the high-temperature and high-pressure gas to the reheating distribution valve one, and the reheating distribution valve one delivers all the high-temperature and high-pressure gas to the reheating distribution valve two; The reheating distribution valve two delivers the high-temperature and high-pressure gas to the heat recovery plate heat exchanger to form a first branch fluid, and the heat is transferred to the energy storage water tank through the heat recovery plate heat exchanger to raise the temperature of the water in the energy storage water tank; The heat load fluctuation characteristics and the time decay characteristics are extracted from the historical operation data of the energy storage water tank, and the correlation analysis is performed on the heat load fluctuation characteristics and the time decay characteristics; based on the correlation analysis results, the heat load fluctuation characteristics and the time decay characteristics are respectively assigned weights, and the heat load fluctuation characteristics and the time decay characteristics are respectively input into the gradient boosting tree model and the ridge regression model; the output results of the gradient boosting tree model and the ridge regression model are weighted and fused to obtain the heat source disturbance intensity of the energy storage water tank in the future time period, the humidification compensation required to offset the heat source disturbance intensity is calculated, and the PID controller is used to adjust the opening degree of the humidity control electromagnetic valve; after the adjustment of the humidity control electromagnetic valve is completed, the hot water in the energy storage water tank flows through the humidity control electromagnetic valve into the humidifier; After the hot water enters the humidifier, the moisture is released into the room by spraying to adjust the indoor humidity; The evaporator, the reheating coil, the humidifier, the heat recovery plate heat exchanger, the energy storage water tank, the compressor and the condenser are connected in sequence through a control valve group; The control valve group comprises a hot water electromagnetic valve one, a reheating electronic expansion valve, a humidity control electromagnetic valve, an electronic expansion valve, a four-way valve, a hot water electronic expansion valve, a hot water electromagnetic valve two, a reheating distribution valve one and a reheating distribution valve two. One end of the compressor is connected with a first interface of the reheating distribution valve one, a second interface of the reheating distribution valve one is connected with a first interface of the reheating distribution valve two, a third interface of the reheating distribution valve one is connected with the reheating coil, a second interface of the reheating distribution valve two is connected with a first interface of the four-way valve, a third interface of the reheating distribution valve two is connected with one end of the hot water electronic expansion valve through the heat recovery plate, the other end of the heat recovery plate is connected with the energy storage water tank respectively and connected with the humidifier through the humidity control electromagnetic valve, the other end of the hot water electronic expansion valve is connected with the hot water electromagnetic valve one and the hot water electromagnetic valve two respectively, the other end of the hot water electromagnetic valve one is connected with the evaporator and the electronic expansion valve respectively, the electronic expansion valve is connected with the reheating electronic expansion valve and the reheating coil through the reheating electronic expansion valve, and connected with the hot water electromagnetic valve two and the condenser, the other end of the condenser is connected with a fourth interface of the four-way valve, a third interface of the four-way valve is connected with the compressor, and a second interface of the four-way valve is connected with the evaporator; The PID controller is used to adjust the opening degree of the humidity control electromagnetic valve, and after the adjustment of the humidity control electromagnetic valve is completed, the hot water in the energy storage water tank flows into the humidifier through the humidity control electromagnetic valve, including: The PID controller calculates a feedback control amount according to the deviation between the preset indoor humidity and the actual indoor humidity, superimposes the humidity compensation and the feedback control amount, and generates an optimal humidity control electromagnetic valve opening degree instruction; The optimal humidity control electromagnetic valve opening degree instruction is sent to the humidity control electromagnetic valve, and the opening degree of the humidity control electromagnetic valve is adjusted, and after the adjustment of the humidity control electromagnetic valve is completed, the hot water in the energy storage water tank enters the humidifier at a controlled flow rate through the humidity control electromagnetic valve.

2. The temperature-controlled heat recovery dehumidifier system of claim 1, wherein, The control unit further includes a refrigeration dehumidification partial waste heat recovery module, a refrigeration dehumidification full heat recovery module, and a heating humidification no waste heat recovery module; The refrigeration dehumidification partial waste heat recovery module is used to realize refrigeration dehumidification partial waste heat recovery of high-temperature and high-pressure gas; The refrigeration dehumidification full heat recovery module is used to realize refrigeration dehumidification full heat recovery of high-temperature and high-pressure gas; The heating humidification no waste heat recovery module is used to realize heating humidification no waste heat recovery of high-temperature and high-pressure gas.

3. The temperature-controlled heat recovery dehumidifier system of claim 2, wherein, The refrigeration dehumidification partial waste heat recovery module includes: The compressor is used to deliver high-temperature and high-pressure gas to the reheating distribution valve one, and the reheating distribution valve one is used to deliver the high-temperature and high-pressure gas to the reheating distribution valve two and the reheating coil respectively; The reheating distribution valve two is used to deliver part of the gas to the heat recovery plate, form a first branch fluid, and complete heat exchange through fluorine-water heat exchange between the heat recovery plate and the energy storage water tank, and the remaining gas is delivered to the condenser through the four-way valve to be condensed into liquid and form a second branch fluid; The first branch fluid passes through the hot water electronic expansion valve, the hot water electromagnetic valve two, and the second branch fluid in turn, and the reheating coil passes through the reheating electronic expansion valve to output a third branch fluid; The collected fluid is delivered to the evaporator through the electronic expansion valve to evaporate and absorb heat, so as to realize refrigeration dehumidification and re-warming, and finally the fluid generated by the evaporator returns to the compressor through the four-way valve to realize circulation.

4. The temperature-controlled heat recovery dehumidifier system of claim 3, wherein, The refrigeration dehumidification full heat recovery module includes: The high-temperature and high-pressure gas is delivered to the reheating distribution valve one by the compressor, and the high-temperature and high-pressure gas is delivered to the reheating distribution valve two and the reheating coil by the reheating distribution valve one; The reheating distribution valve two delivers all the gas to the heat recovery plate heat exchanger to form the first branch fluid, and the heat exchange is performed between the heat recovery plate heat exchanger and the energy storage water tank through the water heat exchange, so as to complete the heat exchange; The first branch fluid is condensed into liquid by the hot water electronic expansion valve and the hot water electromagnetic valve two in turn, and is collected with the second branch fluid output by the reheating electronic expansion valve of the reheating coil; The collected fluid is delivered to the evaporator by the electronic expansion valve to evaporate and absorb heat, so as to realize refrigeration, dehumidification and reheating, and finally the fluid generated by the evaporator returns to the compressor through the four-way valve to realize the circulation.

5. The temperature-controlled heat recovery dehumidifier system of claim 1, wherein, After the hot water enters the humidifier, the moisture is released into the room by the spraying mode to realize the adjustment of the indoor humidity, and the method further comprises the following steps: The remaining gas is delivered to the evaporator to condense into liquid by the four-way valve, and the second branch fluid is formed; The first branch fluid is collected with the second branch fluid by the hot water electronic expansion valve and the hot water electromagnetic valve one in turn, and the collected fluid is delivered to the condenser by the electronic expansion valve to realize the heating and temperature rise of the indoor unit side, and finally the fluid generated by the condenser returns to the compressor through the four-way valve to realize the circulation.

6. The temperature-controlled heat recovery dehumidifier system of claim 2, wherein, The heating and humidifying waste heat recovery-free module comprises: The high-temperature and high-pressure gas is delivered to the reheating distribution valve one by the compressor, and all the high-temperature and high-pressure gas is delivered to the reheating distribution valve two by the reheating distribution valve one; The reheating distribution valve two delivers all the gas to the four-way valve, and the gas is delivered to the evaporator to condense into liquid by the four-way valve, the condensed liquid is delivered to the condenser by the electronic expansion valve to realize the heating and temperature rise of the indoor unit side, and finally the fluid generated by the condenser returns to the compressor through the four-way valve to realize the circulation.

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