Dehumidification heat pump unit with chlorine and carbon dioxide detection function

Abstract

The invention relates to the technical field of dehumidification heat pumps, and particularly discloses a dehumidification heat pump unit with a chlorine and carbon dioxide detection function, which comprises a case, and an air inlet device, a fresh air device, an exhaust device, a heat exchange device and an air supply device which are arranged in the case, and further comprises a PLC (Programmable Logic Controller) control system and an integrated gas detection device electrically matched with the PLC control system; the integrated gas detection device is used in cooperation with the air inlet device and the heat exchange device, the integrated gas detection device comprises a chlorine gas detection module and a carbon dioxide detection module, and the heat exchange device comprises a compressor, an evaporator and a condenser; the PLC control system is electrically connected with the integrated gas detection device, the compressor, the fresh air device and the exhaust device and used for receiving chlorine and carbon dioxide concentration signals detected by the chlorine detection module and the carbon dioxide detection module. The fresh air device is regulated to increase the fresh air introduction amount and start the exhaust device to accelerate exhaust of waste gas in the swimming pool.

Description

Technical Field

[0001] The invention relates to the technical field of dehumidification heat pumps, and in particular discloses a dehumidification heat pump unit with chlorine and carbon dioxide detection functions. Background Art

[0002] Most of the energy loss in the swimming pool comes from the evaporation of the pool water. This energy exists in the swimming pool environment in the form of wet air containing chlorine and carbon dioxide. If the humidity is not effectively controlled, it will cause condensation on the ceiling, walls and other surfaces, accelerate the corrosion of decorative materials, and even cause human discomfort in severe cases. In addition, high concentrations of chlorine will corrode equipment pipelines, and the accumulation of carbon dioxide will endanger the health of personnel. The conventional "exhaust moisture + introduce fresh air" mode in the existing technology has significant defects: the fresh air and pool water need to be additionally heated in winter, and the fresh air needs to be cooled and dehumidified in summer. The double energy consumption leads to high operating costs.

[0003] The following technical problems exist in the existing technology: traditional heat pumps only focus on temperature and humidity regulation, do not recover latent heat, and do not design purification modules for swimming pool chlorine and carbon dioxide pollution, resulting in equipment corrosion and superposition of energy consumption; conventional dehumidification systems lack chlorine / carbon dioxide detection and dynamic air volume control functions, and cannot reduce the concentration of harmful gases in real time; the chlorine-containing condensate generated by the evaporator is directly discharged, which not only wastes water resources but also pollutes the environment. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a dehumidification heat pump unit with chlorine and carbon dioxide detection functions to solve the technical problem that conventional dehumidification systems lack chlorine / carbon dioxide detection and dynamic air volume control functions and cannot reduce the concentration of harmful gases in real time.

[0005] To achieve the above-mentioned purpose, a dehumidification heat pump unit with chlorine and carbon dioxide detection functions of the present invention comprises a chassis, an air intake device, a fresh air device, an exhaust device, a heat exchange device and an air supply device arranged in the chassis, and also comprises a PLC control system and an integrated gas detection device electrically matched with the PLC control system; the integrated gas detection device is used in conjunction with the air intake device and the heat exchange device, the integrated gas detection device comprises a chlorine detection module and a carbon dioxide detection module, the heat exchange device comprises a compressor, an evaporator and a condenser, the warm and humid air generated in the swimming pool is sucked in through the air intake device, and then dehumidified or heated by the compressor, the evaporator and the condenser, and then transported to the air supply device, the air supply device transports the dry hot air formed after the warm and humid air is dehumidified or heated to the room of the swimming pool for heating or for heating the pool water; The PLC control system is electrically connected to the integrated gas detection device, the compressor, the fresh air device and the exhaust device, respectively. The PLC control system is used to receive the chlorine and carbon dioxide concentration signals detected by the chlorine detection module and the carbon dioxide detection module. When the chlorine concentration or the carbon dioxide concentration exceeds a preset threshold, the PLC control system regulates the fresh air device to increase the amount of fresh air introduced and simultaneously starts the exhaust device to accelerate the discharge of waste gas in the swimming pool.

[0006] Furthermore, a rotatable sampling air duct is provided on one side of the integrated gas detection device, and the sampling air duct is provided with a guide vane driven by a micro-stepping motor, and the opening angle of the guide vane is linked to the fan speed; the PLC control system dynamically adjusts the deflection angle of the guide vane by analyzing the wind speed difference between the air inlet device and the exhaust device, so that the detection area forms a mixed airflow state of turbulence and laminar flow, ensuring that the gas detection module can still maintain a detection accuracy of ±5% when the wind speed changes suddenly. This structure solves the sampling distortion problem of the traditional fixed detection port under variable air volume conditions.

[0007] Furthermore, the fresh air device and the exhaust device both use variable frequency fans for airflow exchange, and the PLC control system dynamically adjusts the speed of the variable frequency fans according to the concentration of chlorine or carbon dioxide, and meets the following conditions: When the chlorine concentration exceeds the preset threshold, the exhaust fan of the fresh air device is controlled to increase the power to increase the fresh air volume to 120%-150% of the rated air volume; When the carbon dioxide concentration exceeds the preset threshold, the exhaust fan of the exhaust device is controlled to increase the power to increase the exhaust air volume to 130%-180% of the rated air volume; The difference between the fresh air volume and the exhaust air volume should be within ±10% to maintain the indoor and outdoor air pressure balance of the swimming pool.

[0008] Furthermore, the chlorine detection module adopts an electrochemical sensor with a detection accuracy of 0.1-10ppm; the carbon dioxide detection module adopts a non-dispersive infrared sensor with a detection accuracy of ±50ppm.

[0009] Furthermore, the gas detection device can adopt a distributed detection layout, and chlorine and carbon dioxide sensors are installed in the first chamber (air inlet chamber), the third chamber (exhaust chamber) of the chassis and multiple key points in the swimming pool area, and connected to the PLC control system by wired or wireless means, so that the system can accurately identify the distribution of chlorine concentration and accurately adjust the ventilation strategy.

[0010] Furthermore, the chassis is provided with a plurality of partitions, which sequentially divide the internal space of the chassis into a first chamber, a second chamber, a third chamber, a fourth chamber and a fifth chamber which are interconnected, and the air intake device, the fresh air device, the exhaust device, the heat exchange device and the air supply device are respectively arranged in the first chamber, the second chamber, the third chamber, the fourth chamber and the fifth chamber; The air inlet device includes a first air outlet opened in the first chamber and connected to the inside of the swimming pool, and a first fan arranged in cooperation with the first air outlet; the fresh air device includes a second air outlet opened in the second chamber and a second fan arranged in cooperation with the second air outlet; the exhaust device includes a third air outlet opened in the third chamber and a third fan arranged in cooperation with the third air outlet; the air supply device includes a fourth air outlet and a fourth fan arranged in cooperation with the fourth air outlet.

[0011] Furthermore, a dynamic airflow adjustment device is provided between the first chamber (inlet chamber) and the third chamber (exhaust chamber) of the chassis. The device adopts a multi-stage louver damper, which can intelligently adjust the opening and closing degree according to the chlorine concentration, humidity and CO2 concentration, thereby reducing energy consumption losses while ensuring ventilation and improving the overall heat recovery efficiency.

[0012] Furthermore, the second air outlet is connected to the fourth air outlet via a heat exchange device, and a first filter module is provided between the second air outlet and the evaporator. The first filter module includes a plate-type primary filter and an activated carbon composite filter layer. External air enters the heat exchange device for processing via the primary filter and the activated carbon composite filter layer in turn.

[0013] Furthermore, an airflow balance control module is provided between the second fan of the fresh air device and the third fan of the exhaust device. The module dynamically adjusts the rotation speeds of the fresh air fan and the exhaust air fan based on the difference in fresh air and exhaust air volumes calculated by the PLC control system, so that the air volume difference is always maintained within ±5%, thereby ensuring the balance of air pressure inside and outside the swimming pool area and avoiding the backflow of external pollutants or the leakage of swimming pool moisture.

[0014] Furthermore, a second filter module is provided between the first air outlet and the evaporator, the second filter module has the same structural structure as the first filter module, and the activated carbon composite filter layer has a honeycomb activated carbon structure.

[0015] Furthermore, the thickness of the activated carbon composite filter layer is 50-80 mm, which is used to assist in the adsorption of chlorine and volatile organic compounds generated by the swimming pool.

[0016] Furthermore, a pulse back-blowing device is arranged under the activated carbon composite filter layer, and the pulse back-blowing device includes a high-pressure air pump and a nozzle array; when the pressure difference sensor detects that the pressure difference before and after the filter layer is ≥50Pa, the PLC control system starts the high-pressure air pump to backwash the filter layer at a pressure of 0.5MPa, and the dirt is collected in a detachable waste box.

[0017] Furthermore, the evaporator is arranged on a side close to the air supply device, the refrigerant outlet of the evaporator is connected to the air intake port of the compressor via a low-pressure intake pipe, and the exhaust port of the compressor is connected to the refrigerant inlet of the condenser via a high-pressure exhaust pipe; the heat exchange device also includes a water receiving pan for receiving condensed water from the evaporator and the condenser, a drain pump is connected to the bottom of the water receiving pan, the water inlet end of the drain pump is located in the water receiving pan, and the drain end of the drain pump is connected to the water inlet end of the condenser.

[0018] Furthermore, a water purification module for filtering chloride ions and impurities in condensed water is provided between the drainage end of the drainage pump and the water inlet end of the condenser. The condensed water purified by the water purification module is injected into the swimming pool heating pipeline through an external circulation pump as an auxiliary heat source; the water purification module includes an ion exchange unit, an ultrafiltration membrane unit and an ultraviolet sterilization unit which are connected in sequence, and the chloride ion concentration of the condensed water after purification is ≤1ppm.

[0019] Furthermore, a phase change material energy storage unit is provided downstream of the condenser. The phase change material is a fixed phase change material composited with calcium chloride hexahydrate and graphene, and the phase change temperature is set to 28-32°; the energy storage unit is connected to the fresh air duct and the pool water circulation pipeline respectively through switchable pipelines. When the low electricity price period at night or the swimming pool is closed is detected, the PLC control system stores the condensation waste heat in the phase change material, and releases the heat to the fresh air preheating section or the pool water auxiliary heating section preferentially during the peak period of the next day. This technical solution realizes the time-shifted utilization of thermal energy, and the energy-saving efficiency is increased to more than 40% compared with the traditional heat recovery system.

[0020] Furthermore, a hot water storage tank is provided downstream of the water purification module, and the hot water storage tank is respectively connected to the water inlet of the condenser, the swimming pool heating pipeline and the external drain pipe through a three-way valve, a water temperature sensor is provided at the water outlet of the hot water storage tank, and a condensed water flow sensor is provided at the water inlet of the condensed water; The PLC control system is configured as: Dynamically adjust the opening of the three-way valve according to the data of the condensate flow sensor and the water temperature sensor; When the priority of pool heating demand is higher than condenser cooling, the purified condensed water will be transported to the pool heating pipeline first; When the water level in the hot water storage tank (100) is ≥90%, the external drain pipe is activated to discharge excess condensed water.

[0021] Furthermore, an anti-backflow solenoid valve is provided at the inlet of the swimming pool heating pipeline, and the solenoid valve is electrically controlled with the PLC control system to open only when the water quality monitoring is qualified.

[0022] Furthermore, the integrated gas detection device also includes a self-calibration unit and a backup sensor. The self-calibration unit has a built-in standard gas source, which automatically performs zero point and span standards on the chlorine detection module and the carbon dioxide detection module during a preset period of time every day (which may be during the closing period of the swimming pool); when the detection value of the main sensor exceeds the tolerance for ≥3 times in a row, the PLC control system switches to the backup sensor and triggers a maintenance alarm.

[0023] Furthermore, a multi-layer composite protective shell is arranged around the chlorine gas detection module and the carbon dioxide detection module of the integrated gas detection device, including: The outer layer is a PTFE hydrophobic breathable membrane with a contact angle of >150° and a pore size of ≤0.2μm, which allows gas molecules to pass through but blocks liquid water; The middle layer is a honeycomb-shaped diversion cavity, the inner wall of the cavity is coated with a nano-silicon dioxide moisture-proof coating, and the bottom of the cavity is provided with an inclined drainage microchannel; The inner layer is an aluminum alloy sealed cavity with an air pressure balance valve, and a calcium chloride desiccant bag is built into the cavity; The diversion cavity is linked to the fan start and stop signal of the PLC control system. When the fan stops, the air pressure balance valve automatically closes to form a negative pressure sealing state. This structure ensures gas permeability while achieving IP68 waterproof and chlorine corrosion resistance.

[0024] Furthermore, the PLC control system is connected to the swimming pool flow monitoring system to adjust the compressor, fresh air and exhaust air ratios according to real-time flow data; when the flow rate is greater than 50 people / hour, the compressor frequency is increased to 90%-100%, and the fresh air volume is increased to 130% of the rated value; when the flow rate is less than 10 people / hour, the compressor frequency is reduced to 40%, and the fresh air volume is maintained at 80% of the rated value.

[0025] Furthermore, the dehumidification heat pump unit also includes an intelligent defrost device, which includes a temperature sensor arranged on the surface of the fins of the condenser and a PTC heating element arranged on one side of the condenser body. The PLC control system is used to receive the surface temperature signal of the condenser detected by the temperature sensor and control the PTC heating element to perform heating and defrosting operations.

[0026] Furthermore, when the temperature sensor detects that the surface temperature of the condenser is ≤2°C and lasts for 10 minutes, or detects that the temperature difference between the evaporator and the condenser is ≥15°C, the PLC control system starts the PTC heating element and raises the temperature to 8°C at a rate of 2°C / min, while reducing the compressor power to 50%.

[0027] Furthermore, the condenser of the heat exchange device adopts a dual-circuit heat exchange structure, in which the first circuit is used for air heating, and the second circuit is connected to the swimming pool heating pipeline, and indirectly heats the swimming pool water through the heat exchange coil. The PLC control system automatically adjusts the heat exchange power distribution of each circuit according to the ambient temperature and humidity, swimming pool water temperature and indoor air quality, so as to achieve the optimal energy efficiency match between dehumidification, air heating and water heating.

[0028] Furthermore, the dehumidification heat pump unit also includes a quick-release connector for use with an integrated gas detection device, the quick-release connector includes a mounting bracket and a magnetic fixing seat arranged at the bottom of the mounting bracket, the mounting bracket is provided with a guide rail slot structure, the integrated gas detection device is slidably connected to the magnetic fixing seat via the guide rail slot structure of the mounting bracket, and the mounting bracket is installed to the air outlet of the air inlet device and the heat exchange device via the magnetic fixing seat.

[0029] Furthermore, an elastic sealing ring is provided on the contact surface between the magnetic fixing seat and the air outlet, and an anti-drop lock is provided on the side wall of the mounting bracket. After the integrated gas detection device is inserted into the mounting bracket through the guide rail slot, it is rotated 90° to trigger the anti-drop lock to fix it.

[0030] Furthermore, a photovoltaic panel is provided on the top of the chassis, and the photovoltaic panel is connected to the power supply circuit of the compressor and the fan through an inverter; the PLC control system gives priority to using photovoltaic energy to drive the compressor based on real-time electricity price data and photovoltaic power generation power, and stores the remaining electric energy in a battery for use at night.

[0031] Furthermore, the following structure is set for the main control board of the PLC control system and the variable frequency fan drive circuit: Three-dimensional potting layer: modified epoxy resin and silicone composite potting material is used to cover the circuit board and connectors, and its volume resistivity is greater than 1×10¹ 6 Ω·cm Distributed humidity sensor array: embedded in key nodes inside the potting layer to monitor the relative humidity inside the package in real time; Micro PTC heating wire: arranged in the gap between the potting layer and the shell, when the detection value of any humidity sensor is greater than 60%RH, heating and dehumidification will be automatically started; Redundant grounding terminal: Made of titanium alloy, connected to the chassis' lightning protection grounding system through multiple points of equipotential connection; The system enables electrical components to meet the IEC 60529 waterproof standard in a continuous hot and humid environment of 95%RH and avoids insulation failure caused by condensation.

[0032] Furthermore, the PLC control system of the unit has remote monitoring and data recording functions, and is connected to the swimming pool management system or cloud server through a wireless communication module (Wi-Fi or LoRa) to achieve remote equipment operation status monitoring, air quality data storage and intelligent analysis, and provide early warning and maintenance suggestions.

[0033] Furthermore, a neural network model trained by transfer learning is embedded in the PLC control system. The model uses the chlorine concentration, carbon dioxide concentration, ambient temperature and humidity, and personnel density in the historical operation data as input features, and outputs the optimal fresh air-exhaust volume ratio, compressor frequency, and guide vane angle three-dimensional control parameter combination; the system is equipped with an online self-learning module, which continuously optimizes the model weights by collecting abnormal operating condition data during peak / low periods of swimmers in real time. This algorithm breaks through the linear regulation limitations of traditional PID control, and its response speed under sudden high-load conditions is 2.3 times faster than that of conventional systems.

[0034] The present invention inhales warm and humid air containing chlorine and carbon dioxide from the swimming pool through the air intake device, dehumidifies and cools the air or pool water through the evaporator, and then recovers the latent heat through the condenser to heat the air or pool water. The treated dry hot air is then returned to the swimming pool through the air supply device. The integrated gas detection device monitors the concentration of harmful gases in real time, and the PLC control system dynamically adjusts the frequency conversion fresh air / exhaust air volume to dilute pollutants, and realizes efficient heat recovery and stable system operation through compressor frequency conversion, condensed water circulation and intelligent defrosting.

[0035] The beneficial effects of the present invention are as follows: recycling the latent heat of evaporation, reducing the redundant energy consumption of the traditional "heating + air conditioning" mode, and improving the comprehensive energy efficiency by more than 30%; dual-gas detection and linkage air volume control, maintaining the safe range of chlorine / CO2 concentration, and the activated carbon filter layer adsorbing VOCs to purify the air quality; recycling condensed water to reduce water consumption, PTC precise defrosting to avoid ice damage, and quick-detachable detection modules to reduce maintenance costs; chamber separation and modular design reduce airflow interference, and air pressure balance control to extend equipment life. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the dehumidification heat pump of the present invention; Figure 2 This is a schematic diagram of the structure of the dehumidification heat pump of the present invention after removing part of the casing; Figure 3 It is a schematic diagram of the structure in the sixth chamber of the present invention; Figure 4 It is a schematic diagram of the installation position of the water receiving pan and the drainage pump of the present invention; Figure 5 It is a schematic diagram of the structures of the air inlet device, the fresh air device and the exhaust device of the present invention; Figure 6is a schematic structural diagram of the first filtering module of the present invention; Figure 7 It is a structural schematic diagram of the integrated gas detection device of the present invention and the quick-release connector being installed in coordination; Figure 8 Based Figure 7 Schematic diagram of the enlarged structure of part A.

[0037] Reference numerals include: 1. Chassis; 2. Air inlet device; 5. Heat exchange device; 6. Air supply device; 7. PLC control system; 8. Integrated gas detection device; 9. Quick-release connector; 10. Partition; 11. First chamber; 12. Second chamber; 121. Shutter damper; 13. Third chamber; 14. Fourth chamber; 15. Fifth chamber; 16. Sixth chamber; 21. First air outlet; 22. First fan; 31. Second air outlet; 41. Third air outlet; 51. Compressor; 52. Evaporator; 53. Condenser; 54. Surface cooler; 55. First filter module; 551. Plate primary filter; 552. Activated carbon composite filter layer; 57. Water receiving tray; 58. Drain pump; 581. Water inlet end of the drain pump; 582. Drain pump drain end; 61. Fourth air outlet; 62. Fourth fan; 81. Chlorine gas detection module; 82. Carbon dioxide detection module; 91. Mounting bracket; 92. Magnetic fixing seat; 93. Guide rail slide groove structure; 911. Rod body; 931. Slide groove; 932. Roller. DETAILED DESCRIPTION

[0038] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0039] See also Figures 1 to 8As shown, a dehumidification heat pump unit with chlorine and carbon dioxide detection functions of the present invention monitors the swimming pool environment data in real time through an integrated gas detection device 8 (including an electrochemical chlorine sensor and an infrared CO2 sensor), and the detection signal is transmitted to the PLC control system 7. When the chlorine or CO2 concentration exceeds the standard, the PLC controls the variable frequency fresh air fan (the air volume is increased to 120%-150% of the rated value) and the exhaust fan (the air volume is increased to 130%-180%), and synchronously adjusts the power of the compressor 51 to maintain the indoor and outdoor pressure difference of ±10%; after the warm and humid air is dehumidified by the evaporator 52, the condensed water is purified by ion exchange resin, ultrafiltration membrane and ultraviolet sterilization and reused for pool water heating; the condenser 53 adopts a double-circuit design, the first circuit heats the air, and the second circuit indirectly heats the pool water through the heat exchange coil, and the PLC dynamically allocates the heat exchange priority according to the environmental parameters. The gas detection module is installed with a quick-release magnetic rail, supports automatic switching of the main and standby sensors, and the activated carbon filter layer is equipped with a pulse backflush device, which triggers 0.5MPa high-pressure cleaning when the pressure difference is ≥50Pa. The dual-gas detection is linked to the variable-frequency fan to solve the problem that the traditional system cannot dynamically adjust the exhaust gas concentration; the condensate recycling and dual-circuit heat exchange design improve the comprehensive energy efficiency ratio (COP) by more than 30%; the modular detection device and self-cleaning filtration system reduce the manual maintenance cost by 50%.

[0040] Specifically, in this embodiment, a rotatable sampling air duct is added to the integrated gas detection device 8, and the sampling air duct 83 is provided with a guide vane driven by a micro-stepping motor, and the opening angle of the guide vane is linked to the fan speed; the PLC control system 7 dynamically adjusts the deflection angle of the guide vane by analyzing the wind speed difference between the air inlet device 2 and the exhaust device, so that the detection area forms a mixed airflow state of turbulent and laminar flow, ensuring that the gas detection module can still maintain a detection accuracy of ±5% when the wind speed changes suddenly. This structural design solves the sampling distortion problem of the traditional fixed detection port under variable air volume conditions.

[0041] Specifically, the chassis 1 is divided into five chambers (first to fifth chambers 15) by a plurality of partitions 10, corresponding to the air intake, fresh air, exhaust air, heat exchange and air supply device 6 respectively. In this embodiment, a sixth chamber 16 is also separated by a partition 10 on one side of the air supply device 6, and the control cabinet of the compressor 51 PLC control system 7 and part of the drainage pump 58 are all located in the sixth chamber 16, wherein: The first chamber 11 (air inlet): is provided with a first air outlet 21 and a first fan 22, which is directly connected to the interior of the swimming pool and is responsible for inhaling warm and humid air containing chlorine and carbon dioxide.

[0042] The second chamber 12 (fresh air): introduces external fresh air through the second air outlet 31 and the second fan to form an air flow complementary to the air inlet chamber to avoid the backflow of pollutants.

[0043] The third chamber 13 (exhaust): equipped with a third fan and air outlet to discharge high-concentration exhaust gas and work in conjunction with the fresh air device to maintain air pressure balance (difference ±10%).

[0044] The fourth chamber 14 (heat exchange): has a built-in compressor 51, an evaporator 52 and a condenser 53, which completes air dehumidification, heating and heat energy recovery, and the condensed water is recycled through the purification module.

[0045] The fifth chamber 15 (air supply): The treated dry cold air or heated air is transported back to the swimming pool through the fourth fan 62, so as to realize the dual functions of temperature and humidity regulation and pool water heating.

[0046] This integrated layout allows each chamber to independently install core components (such as fans and heat exchangers), which is convenient for targeted disassembly during maintenance and reduces downtime; the chambers are connected to form a one-way airflow path to avoid cross-contamination between chlorine-containing humid air and fresh air, meeting the anti-corrosion requirements of the swimming pool environment; the chamber partitions can be adjusted in proportion according to the actual size of the machine room, for example, the heat exchange chamber (the fourth chamber 14) can be moved closer to the swimming pool hall, shortening the air supply duct to reduce energy consumption.

[0047] Specifically, a chlorine detection module 81 (electrochemical sensor, accuracy 0.1-10ppm) and a carbon dioxide detection module 82 (non-dispersive infrared sensor, accuracy ±50ppm) are deployed in the swimming pool area and the unit's air inlet / exhaust chamber (at the first air inlet of the first chamber 11 and the fourth air inlet of the fifth chamber 15) to collect concentration signals in real time and transmit them to the PLC control system 7.

[0048] The variable frequency fan linkage control is as follows: Chlorine excess response: When the chlorine concentration exceeds the threshold (e.g. ≥1ppm), the PLC controls the variable frequency fan (second fan) of the fresh air device to increase the speed, so that the fresh air volume increases to 120%-150% of the rated value, accelerating the dilution of chlorine; Response to excessive carbon dioxide: When the carbon dioxide concentration exceeds the standard (e.g. ≥1000ppm), the PLC will simultaneously increase the speed of the variable frequency fan (the third fan) of the exhaust device to 130%-180% of the rated value to enhance exhaust gas discharge.

[0049] Air volume difference closed-loop regulation: The difference between fresh air and exhaust air volume is monitored by a differential pressure sensor. The PLC uses a PID algorithm to dynamically adjust the fan speed to ensure that the air volume difference is always controlled within ±10% (for example, when the fresh air volume is 1500m³ / h, the exhaust air volume needs to be in the range of 1350-1650m³ / h) to prevent air pressure imbalance from causing pollutant backflow or moisture leakage.

[0050] Redundant design and calibration: integrated backup sensor and self-calibration unit (built-in standard gas source), automatic calibration of the main sensor zero point and span during daily closing hours. If the main sensor exceeds the tolerance for three consecutive times, it will switch to the backup module and trigger a maintenance alarm.

[0051] Specifically, a dynamic airflow regulating device is provided between the second chamber 12 (inlet chamber) and the third chamber 13 (exhaust chamber) of the chassis 1. The dynamic airflow regulating device adopts a multi-stage louver damper 121 (each stage blade width is 50mm, and the spacing is adjustable in the range of 0-30mm), and the blade opening and closing angle (0°-90°) is driven by a stepper motor. The multi-parameter linkage louver adjustment strategy reduces ineffective ventilation energy consumption by 40%-50% compared with traditional fixed-opening dampers; the louver damper 121 body is made of chlorine-corrosion-resistant 316L stainless steel, and the blade surface is coated with a nano-anti-corrosion coating. The PLC control system 7 receives signals from the chlorine sensor (0.1-10ppm), carbon dioxide sensor (±50ppm) and humidity sensor (±3%RH) in real time, and dynamically adjusts the opening and closing degree based on the fuzzy PID algorithm (as follows): High pollution mode: When the chlorine concentration is ≥1ppm or CO2 ≥1000ppm, the shutter opening degree increases to 80%-90%, giving priority to strengthening ventilation; Energy-saving mode: When the pollutant concentration is lower than the threshold and the humidity is ≤60%, the opening degree is reduced to 30%-50% to reduce the heat loss of fresh air; Heat recovery optimization: By adjusting the air flow pressure difference between the inlet and exhaust chambers (controlled within ±50Pa), the waste heat of the exhaust gas is guided to be recovered through the heat exchange device 5, and the heat recovery efficiency is increased to more than 75%.

[0052] Specifically, in this embodiment, a first filter module 55 (located between the shutter damper 121 and the evaporator 52) is arranged between the second air outlet 31 (fresh air inlet) and the evaporator 52, and a second filter module (installed at the opening of the partition 10 between the first chamber 11 and the second chamber 12) is arranged between the first air outlet 21 (return air inlet) and the evaporator 52. Both modules include a plate-type primary filter 551 (G4 grade, filtration efficiency ≥ 90%) and a honeycomb activated carbon composite filter layer 552 (thickness 50-80mm, pore size 2-4mm), wherein the activated carbon filter layer uses modified activated carbon particles impregnated with copper oxide, and the chlorine adsorption efficiency is ≥ 95%. The two-stage filtration system increases the removal rate of chlorine and VOCs to more than 95%, avoiding equipment corrosion and air pollution.

[0053] After the fresh air and return air flow pass through the primary filter to intercept particles ≥5μm, the activated carbon layer adsorbs chlorine (0.1-10ppm) and volatile organic compounds (TVOC≤0.5mg / m³), and the purified air enters the evaporator 52 for heat exchange treatment.

[0054] Specifically, an air volume difference sensor (accuracy ±2%) is set between the second fan of the fresh air device and the third fan of the exhaust device. The PLC uses a fuzzy PID algorithm to dynamically adjust the fan speed based on the deviation between the difference and the preset threshold (±5%). For example, when the fresh air volume is 3000m³ / h and the exhaust volume needs to be controlled in the range of 2850-3150m³ / h, the motor frequency (20-60Hz) is adjusted by the inverter to achieve dynamic balance.

[0055] A differential pressure sensor (range 0-100Pa) is installed under the activated carbon filter layer. When the pressure difference before and after the filter layer is detected to be ≥50Pa, the PLC triggers the high-pressure air pump (rated pressure 0.5MPa) to drive the nozzle array (aperture 1mm, spacing 50mm) for pulse backblowing. The backblowing cycle is ≤30 seconds / time. The dirt is collected into a removable waste box (volume 5L) through the diversion trough, and the maintenance cycle is extended to 3-6 months.

[0056] Specifically, the evaporator 52 is installed close to the air supply device 6 (the fifth chamber 15), and the refrigerant circulation path is: evaporator 52 outlet → low-pressure suction pipe (Φ25mm copper tube) → compressor 51 suction port → compressor 51 exhaust port → high-pressure exhaust pipe (Φ32mm copper tube) → condenser 53 inlet, forming a closed refrigeration cycle.

[0057] The condensed water from the evaporator 52 and the condenser 53 is collected by a water receiving tray 57 (304 stainless steel, with an inclination angle of 5°) and then transported to the water purification module via a drain pump 58 (flow rate 1m³ / h). The water inlet end of the drain pump 58 is connected to the inside of the water receiving tray 57 , and the drainage end of the drain pump 58 is connected to the water inlet end of the condenser 53 .

[0058] A water purification module for filtering chloride ions and impurities in condensed water is provided between the drainage end of the drainage pump 58 and the water inlet end of the condenser 53. The water purification module is sequentially equipped with an ion exchange unit (strong acid type, Cl⁻ exchange capacity ≥ 2mmol / g), an ultrafiltration membrane unit (molecular weight cutoff 10kDa, pore size 0.01μm) and an ultraviolet sterilization unit (254nm wavelength, power 30W). After purification, the Cl⁻ concentration of the condensed water is ≤1ppm, and the pH value is 6.5-7.5. It is injected into the swimming pool heating pipeline through an anti-corrosion pipe (PPR material) as an auxiliary heat source (the water temperature is increased by 2-3℃).

[0059] Specifically, in this embodiment, a phase change material energy storage unit is added downstream of the condenser 53. The phase change material is a fixed phase change material composited with calcium chloride hexahydrate and graphene, and the phase change temperature is set to 28-32°C; the energy storage unit is connected to the fresh air duct and the pool water circulation pipeline respectively through a switchable pipeline. When the low electricity price period at night or the swimming pool is closed, the PLC control system 7 stores the condensation waste heat in the phase change material, and releases the heat to the fresh air preheating section or the pool water auxiliary heating section preferentially during the peak period of the next day. This technology realizes the time-shifted utilization of thermal energy, and improves the energy-saving efficiency by more than 40% compared with the traditional heat recovery system.

[0060] Specifically, the hot water storage tank (volume 2-3m³) is connected to the outlet of the water purification module through a DN50 pipe, and its outlet is equipped with a three-way valve (opening adjustment accuracy ±2°) and a water temperature sensor (accuracy ±0.5℃), and a turbine flow sensor (range 0-5m³ / h, accuracy ±1%) is set at the water inlet of the condenser 53. A float water level gauge (resolution 1cm) is installed in the water tank to monitor the water level status in real time.

[0061] The PLC calculates the heat load value (Q×T) based on the product of the condensing water flow rate (Q) and the water temperature (T). When the swimming pool heating demand signal (such as the pool water temperature <28°C) is triggered, the three-way valve is switched to the swimming pool heating pipeline side, and the opening is dynamically adjusted according to the PID algorithm (target temperature 30±1°C). At the same time, the water inlet flow rate of the condenser 53 is limited to not less than 30% of the rated value to maintain the cooling demand of the compressor 51.

[0062] Specifically, an anti-backflow solenoid valve is provided at the inlet of the swimming pool heating pipeline, and the solenoid valve and the PLC control system 7 are electrically controlled to be opened only when the water quality monitoring is qualified.

[0063] Specifically, the self-calibration unit has a built-in standard gas source, which includes zero-point gas (high-purity nitrogen, purity ≥99.999%) and span gas (a nitrogen mixture containing 1ppm chlorine + 1000ppm carbon dioxide), which is stored in a sealed gas cylinder (volume 200mL, pressure resistance 15MPa), and the gas release is controlled by a solenoid valve.

[0064] During the daily closing time (e.g. 2:00 a.m.), the PLC starts the calibration procedure: Zero calibration: Pass nitrogen gas into the chlorine / carbon dioxide sensor for 30 seconds to eliminate baseline drift; Span calibration: Pass span gas for 60 seconds, compare the sensor output value with the preset standard value, if the deviation is greater than ±5% (chlorine) or ±10% (CO2), automatically correct the sensor gain parameter.

[0065] After the calibration is completed, the exhaust gas is adsorbed by activated carbon and then discharged to the outside to avoid polluting the swimming pool environment.

[0066] The main sensor (electrochemical / infrared type) and the backup sensor (metal oxide semiconductor type) are installed in parallel and share the same gas circuit interface. The PLC monitors the stability of the main sensor data in real time: If the test value exceeds the preset range (such as chlorine ±0.5ppm, CO2 ±50ppm) for three consecutive times, it is judged as failure; Switch to the backup sensor, and simultaneously trigger the sound and light alarm (85dB buzzer + LED flashing) and remote maintenance work order (pushed to the management platform via Wi-Fi).

[0067] When the backup sensor is enabled, the PLC performs a quick self-test (zero point calibration only) every 6 hours to ensure that the temporary detection accuracy error is ≤±10%.

[0068] Specifically, a multi-layer composite protective shell is arranged around the chlorine gas detection module and the carbon dioxide detection module of the integrated gas detection device 8, including: The outer layer is a PTFE hydrophobic breathable membrane with a contact angle of >150° and a pore size of ≤0.2μm, which allows gas molecules to pass through but blocks liquid water; The middle layer is a honeycomb-shaped diversion cavity, the inner wall of the cavity is coated with a nano-silicon dioxide moisture-proof coating, and the bottom of the cavity is provided with an inclined drainage microchannel; The inner layer is an aluminum alloy sealed cavity with an air pressure balance valve, and a calcium chloride desiccant bag is built into the cavity; The diversion cavity is linked to the fan start and stop signal controlled by the PLC control system 7. When the fan stops, the air pressure balance valve automatically closes to form a negative pressure sealing state. This structure ensures gas permeability while achieving IP68 waterproof and chlorine corrosion resistance.

[0069] Specifically, the PLC control system 7 is connected to the swimming pool flow monitoring system (such as an AI camera counting module or an infrared sensor array) through the Modbus communication protocol to receive real-time flow data (accuracy ≥ 95%). The system has a built-in flow-equipment power mapping algorithm. When the flow rate is detected to be greater than 50 people / hour, the PLC performs the following operations: Compressor 51 control: The frequency of compressor 51 is increased from the base value (50Hz) to 90%-100% through the inverter, and the cooling capacity is simultaneously increased to 120-150kW to meet the surge in temperature and humidity loads caused by high traffic. Fresh air regulation: The fuzzy PID algorithm is used to control the speed of the fresh air fan, so that the fresh air volume is increased from the rated value (such as 3000m³ / h) to 130% (3900m³ / h), and the exhaust fan is linked to keep the air volume difference ≤±5% to prevent air pressure imbalance; Heat recovery optimization: Automatically switches to high-efficiency heat exchange mode, and strengthens exhaust waste heat recovery by adjusting the opening and closing degree of the louver damper 121 (increased to 80°), and the heat recovery efficiency is increased to 78%.

[0070] Low load energy-saving operation mode: When the flow of people is less than 10 people / hour, the PLC triggers the energy-saving strategy: Compressor 51 frequency reduction: The frequency of compressor 51 is gradually reduced to 40% (20Hz) through PID closed-loop control, and the cooling capacity is reduced to 60kW. The evaporator 52 fin temperature sensor (±0.5℃ accuracy) is used to prevent frost. Fresh air maintenance: The fresh air volume is maintained at 80% of the rated value (2400m³ / h), and the fan speed is dynamically corrected through the pressure difference sensor (range 0-200Pa) to ensure that the minimum ventilation frequency is ≥4 times / hour; Equipment hibernation: If the low load lasts for more than 2 hours, non-core equipment (such as auxiliary heaters) will be automatically shut down, and only the basic circulating water pump will be kept running, reducing the overall energy consumption by 45%.

[0071] Specifically, in this embodiment, PT100 platinum resistance temperature sensors (accuracy ±0.3°C) are evenly arranged on the fin surface of the condenser 53, with a spacing of 50mm×50mm, to monitor the surface temperature distribution in real time. At the same time, K-type thermocouples are set at the outlet of the evaporator 52 and the inlet of the condenser 53 to calculate the temperature difference (ΔT) between the two.

[0072] PLC built-in dual trigger logic: Low temperature trigger: When any sensor detects a temperature of ≤2°C for 10 minutes, it is considered a frost risk; Temperature difference trigger: When ΔT≥15°C (evaporator 52 outlet temperature - condenser 53 inlet temperature), it is determined that the frost layer hinders heat exchange.

[0073] PTC heating and compressor 51 coordinated control: The PTC heating element is packaged with a ceramic substrate, has a power density of 15W / cm², and is arranged in parallel along the airflow direction of the condenser 53, with a coverage area ≥80% of the fin area.

[0074] After defrosting starts, the PLC executes the gradient heating strategy: Heating stage: Raise the fin temperature to 8°C at a rate of 2°C / min to avoid metal fatigue caused by thermal shock; Power regulation: The power of the compressor 51 is synchronously reduced to 50% (eg, from 30 kW to 15 kW) through the inverter, thereby reducing the amount of refrigerant circulation and preventing the evaporator 52 from being overcooled and frozen.

[0075] During the defrosting process, the PLC continuously monitors the change of ΔT. If ΔT is less than 5°C and is maintained for 3 minutes, it is determined that the defrosting is complete and the compressor 51 is restored to full power operation.

[0076] Specifically, the condenser 53 of the heat exchange device 5 adopts a dual-circuit heat exchange structure, in which the first circuit is used for air heating, and the second circuit is connected to the swimming pool heating pipeline, and indirectly heats the swimming pool water through the heat exchange coil. The PLC control system 7 automatically adjusts the heat exchange power distribution of each circuit according to the ambient temperature and humidity, the swimming pool water temperature and the indoor air quality, so as to achieve the optimal energy efficiency match between dehumidification, air heating and water heating.

[0077] Specifically, the first circuit (air heating) adopts a Φ12mm copper tube fin heat exchanger (heat exchange area 15m²), which is directly in contact with the air flow in the air supply chamber, and heats the air through the high-temperature refrigerant (R410A, exhaust temperature 70-90°C) discharged by the compressor 51. The air outlet temperature can be adjusted in the range of 30-45°C.

[0078] The second circuit (pool water heating) is equipped with a plate heat exchanger (316L stainless steel, heat exchange area 8m²), which is connected in parallel with the swimming pool circulation pipeline and the water circuit is switched through a three-way valve. The refrigerant releases waste heat in the second circuit (the temperature drops to 40-50℃), indirectly heating the pool water (water temperature increases by 2-5℃ / cycle).

[0079] PLC multi-parameter collaborative control: Input parameters: ambient temperature and humidity (±1°C / ±3%RH), pool water temperature (±0.2°C), indoor chlorine / CO2 concentration (±0.1ppm / ±30ppm); Control algorithm: Based on the Q-learning reinforcement learning model, the heat distribution weights of the first and second loops are calculated in real time (for example, when the pool water temperature is less than 26°C, 70% of the heat is distributed to the second loop; when the indoor humidity is greater than 70%, 60% of the heat is used for air heating and dehumidification) to maximize the energy efficiency ratio (COP).

[0080] Dynamic power allocation mechanism: The priority matrix is ​​preset in the PLC: dehumidification demand > pool water heating > air heating. When the chlorine concentration exceeds the standard (≥1ppm) or CO2 ≥1000ppm, the air volume of the first circuit is forced to increase to 130%, giving priority to exhausting polluted air.

[0081] A dual PID controller (temperature PID + humidity PID) is used to adjust the compressor 51 frequency (20-100Hz) and the three-way valve opening (0-100%) to ensure that the temperature difference between the two circuits is ≤10℃ to avoid thermal stress damage.

[0082] Specifically, the dehumidification heat pump unit also includes a quick-release connector 9 for use with an integrated gas detection device 8, the quick-release connector 9 includes a mounting bracket 91 and a magnetic fixing seat 92 arranged at the bottom of the mounting bracket 91, the mounting bracket 91 is provided with a guide rail groove structure 93, the integrated gas detection device 8 is slidably connected to the magnetic fixing seat 92 via the guide rail groove structure 93, and the mounting bracket 91 is installed to the air outlet of the air inlet device 2 and the heat exchange device 5 via the magnetic fixing seat 92.

[0083] Specifically, the guide rail slot structure 93 includes a slot 931 provided on the magnetic fixing seat 92, and a roller 932 rollingly arranged in the slot 931. The mounting bracket 91 has a rod body 911, and one end of the roller 932 is rotatably arranged at the end of the rod body 911. The chlorine gas detection module 81 and the carbon dioxide detection module 82 are slidably connected to the mounting bracket via two sets of guide rail slot structures 93, respectively.

[0084] The magnetic fixing seat 92 is composed of a NdFeB permanent magnet (magnetic attraction force ≥ 50N) and a 304 stainless steel substrate. A fluororubber elastic sealing ring (hardness 70±5 Shore A) is provided on the contact surface to ensure a close fit with the tuyere flange surface, and the air tightness reaches the IP67 standard.

[0085] The guide rail is made of aluminum alloy profile (cross-sectional size 20mm×10mm), and the slide groove is embedded with a polytetrafluoroethylene wear-resistant liner. After the integrated gas detection device 8 is inserted through the slide groove, it is rotated 90° to trigger the anti-drop lock (spring steel material, locking force ≥15N), realizing mechanical-magnetic dual fixation.

[0086] Quick installation and maintenance mechanism: The magnetic fixing seat 92 at the bottom of the mounting bracket 91 is automatically adsorbed after being aligned with the air outlet flange, the installation error is ≤±1mm, and the single disassembly and assembly time is <5 seconds. It is suitable for various air outlet sizes (DN150-DN300) such as the air inlet device 2 and the heat exchange device 5.

[0087] Anti-accidental touch protection: The anti-drop lock has a built-in Hall sensor, which triggers an audible and visual alarm (85dB buzzer + red LED flashing) when the detection device is not completely locked, preventing the gas detection module from accidentally falling off.

[0088] Specifically, a photovoltaic panel is provided on the top of the chassis 1, and the photovoltaic panel is connected to the power supply circuit of the compressor 51 and the fan through an inverter; the PLC control system 7 uses photovoltaic energy to drive the compressor 51 preferentially according to real-time electricity price data and photovoltaic power generation power, and stores the remaining electric energy in the battery for use at night.

[0089] The photovoltaic panel on the top of the chassis 1 adopts a monocrystalline silicon high-efficiency component (conversion efficiency ≥ 22%), which is integrated with the unit structure through a waterproof packaging process (IP68 grade). After the photovoltaic array output is optimized by the MPPT controller, the bidirectional inverter (efficiency ≥ 98%) converts the DC power into 380V AC power, which is preferentially supplied to the compressor 51 and the fan.

[0090] In this embodiment, the PLC control system 7 of the unit has remote monitoring and data recording functions, and is connected to the swimming pool management system or cloud server through a wireless communication module (Wi-Fi or LoRa) to realize remote equipment operation status monitoring, air quality data storage and intelligent analysis, and provide early warning and maintenance suggestions. The wireless communication module adopts a dual-mode wireless communication module (Wi-Fi 6 + LoRaWAN) to realize real-time transmission of equipment status (compressor 51 frequency, fan speed, etc.), environmental parameters (temperature and humidity, chlorine / CO2 concentration) and photovoltaic power generation data. The cloud server deploys a time series database (InfluxDB), which supports the collection of thousands of data points per second, and the storage period is ≥5 years.

[0091] Specifically, in this embodiment, the following structures are set for the main control board of the PLC control system 7 and the variable frequency fan drive circuit: Three-dimensional potting layer: modified epoxy resin and silicone composite potting material is used to cover the circuit board and connectors, and its volume resistivity is greater than 1×10¹ 6 Ω·cm; Distributed humidity sensor array: embedded in key nodes inside the potting layer to monitor the relative humidity inside the package in real time; Micro PTC heating wire: arranged in the gap between the potting layer and the shell, when the detection value of any humidity sensor is greater than 60%RH, heating and dehumidification will be automatically started; Redundant grounding terminal: Made of titanium alloy, connected to the chassis' lightning protection grounding system through multiple points of equipotential connection; The system enables electrical components to meet the IEC 60529 waterproof standard in a continuous hot and humid environment of 95%RH and avoids insulation failure caused by condensation.

[0092] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A dehumidification heat pump unit with chlorine and carbon dioxide detection function, characterized in that: The invention comprises a case (1), an air intake device (2) arranged on the case (1), a fresh air device, an exhaust device, a heat exchange device (5) and an air supply device (6), and also comprises a PLC control system (7) and an integrated gas detection device (8) electrically coordinated with the PLC control system (7); the integrated gas detection device (8) is used in coordination with the air intake device (2) and the heat exchange device (5); the integrated gas detection device (8) comprises a chlorine detection module (81) and a carbon dioxide detection module (82); the heat exchange device (5) comprises a compressor (51), an evaporator (52) and a condenser (53); the warm and humid air generated in the swimming pool is sucked in through the air intake device (2), and then dehumidified or heated by the compressor (51), the evaporator (52) and the condenser (53) before being transported to the air supply device (6); the air supply device (6) transports the dry and cold air generated after the warm and humid air is dehumidified or heated to a room in the swimming pool for heating or is used for heating the swimming pool water; The PLC control system (7) is electrically connected to the integrated gas detection device (8), the compressor (51), the fresh air device and the exhaust device respectively. The PLC control system (7) is used to receive the chlorine and carbon dioxide concentration signals detected by the chlorine detection module (81) and the carbon dioxide detection module (82). When the chlorine concentration or the carbon dioxide concentration exceeds a preset threshold, the PLC control system (7) controls the fresh air device to increase the amount of fresh air introduced and simultaneously starts the exhaust device to accelerate the discharge of waste gas in the swimming pool.

2. The dehumidification heat pump unit with chlorine and carbon dioxide detection functions according to claim 1, characterized in that: The fresh air device and the exhaust air device both use variable frequency fans for airflow exchange. The PLC control system (7) dynamically adjusts the speed of the variable frequency fans according to the concentration of chlorine or carbon dioxide and meets the following conditions: When the chlorine concentration exceeds the preset threshold, the exhaust fan of the fresh air device is controlled to increase the power to increase the fresh air volume to 120%-150% of the rated air volume; When the carbon dioxide concentration exceeds the preset threshold, the exhaust fan of the exhaust device is controlled to increase the power to increase the exhaust air volume to 130%-180% of the rated air volume; The difference between the fresh air volume and the exhaust air volume is within ±10% to maintain the indoor and outdoor air pressure balance of the swimming pool.

3. The dehumidification heat pump unit with chlorine and carbon dioxide detection functions according to claim 1, characterized in that: The chlorine gas detection module (81) uses an electrochemical sensor, and its detection accuracy is set to 0.1-10 ppm; the carbon dioxide detection module (82) uses a non-dispersive infrared sensor, and its detection accuracy is set to ±50 ppm.

4. The dehumidification heat pump unit with chlorine and carbon dioxide detection functions according to claim 1, characterized in that: The case (1) is provided with a plurality of partitions (10) having openings, the plurality of partitions (10) sequentially dividing the internal space of the case (1) into a first chamber (11), a second chamber (12), a third chamber (13), a fourth chamber (14) and a fifth chamber (15) which are interconnected, the air intake device (2), the fresh air device, the exhaust device, the heat exchange device (5) and the air supply device (6) being respectively arranged in the first chamber (11), the second chamber (12), the third chamber (13), the fourth chamber (14) and the fifth chamber (15); The air inlet device (2) comprises a first air outlet (21) provided in the first chamber (11) and connected to the interior of the swimming pool, and a first fan (22) arranged in cooperation with the first air outlet (21); the fresh air device comprises a second air outlet (31) provided in the second chamber (12) and a second fan arranged in cooperation with the second air outlet (31); the exhaust device comprises a third air outlet (41) provided in the third chamber (13) and a third fan arranged in cooperation with the third air outlet (41); and the air supply device (6) comprises a fourth air outlet (61) and a fourth fan (62) arranged in cooperation with the fourth air outlet (61).

5. The dehumidification heat pump unit with chlorine and carbon dioxide detection function according to claim 4, characterized in that: The second air outlet (31) is connected to the fourth air outlet (61) via the heat exchange device (5); a first filter module (55) is provided between the second air outlet (31) and the evaporator (52); the first filter module (55) comprises a plate-type primary filter (551) and an activated carbon composite filter layer (552); external air enters the heat exchange device (5) for treatment via the primary filter and the activated carbon composite filter layer (552) in sequence.

6. The dehumidification heat pump unit with chlorine and carbon dioxide detection function according to claim 5, characterized in that: A second filter module is provided between the first air outlet (21) and the evaporator (52); the second filter module has the same structural structure as the first filter module (55); the activated carbon composite filter layer (552) has a honeycomb activated carbon structure; the activated carbon composite filter layer (552) has a thickness of 50-80 mm and is used to assist in the adsorption of chlorine and volatile organic matter generated by the swimming pool.

7. The dehumidification heat pump unit with chlorine and carbon dioxide detection functions according to claim 1, characterized in that: The evaporator (52) is arranged on a side close to the air supply device (6); the refrigerant outlet of the evaporator (52) is connected to the air intake port of the compressor (51) via a low-pressure air intake pipe, and the exhaust port of the compressor (51) is connected to the refrigerant inlet of the condenser (53) via a high-pressure exhaust pipe; the heat exchange device (5) further comprises a water receiving pan (57) for receiving condensed water from the evaporator (52) and the condenser (53); the heat exchange device (5) further comprises a drain pump (58); the water inlet end of the drain pump (58) is connected to the water receiving pan (57), and the drain end of the drain pump (58) is connected to the water inlet end of the condenser (53).

8. The dehumidification heat pump unit with chlorine and carbon dioxide detection functions according to claim 7, characterized in that: A water purification module for filtering chloride ions and impurities in condensed water is provided between the drainage end of the drainage pump (58) and the water inlet end of the condenser (53); the condensed water purified by the water purification module is injected into the swimming pool heating pipeline through an external circulation pump as an auxiliary heat source; the water purification module comprises an ion exchange unit, an ultrafiltration membrane unit and an ultraviolet sterilization unit which are connected in sequence; the chloride ion concentration of the purified condensed water is ≤1ppm.

9. The dehumidification heat pump unit with chlorine and carbon dioxide detection functions according to claim 1, characterized in that: The dehumidification heat pump unit also includes an intelligent defrosting device, which includes a temperature sensor arranged on the surface of the fins of the condenser (53) and a PTC heating element arranged on one side of the condenser (53) body. The PLC control system (7) is used to receive a surface temperature signal of the condenser (53) detected by the temperature sensor and control the PTC heating element to perform a heating and defrosting operation.

10. The dehumidification heat pump unit with chlorine and carbon dioxide detection functions according to claim 1, characterized in that: The dehumidification heat pump unit also includes a quick-release connector (9) for use with the integrated gas detection device (8), the quick-release connector (9) including a mounting bracket (91) and a magnetic fixing seat (92) arranged at the bottom of the mounting bracket (91), the mounting bracket (91) being provided with a guide rail slide groove structure (93), the integrated gas detection device (8) slidingly cooperates with the magnetic fixing seat (92) via the guide rail slide groove structure (93) of the mounting bracket (91), and the mounting bracket (91) is mounted to the air outlet of the air inlet device (2) and the heat exchange device (5) via the magnetic fixing seat (92).

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