Dual-mode constant-temperature and constant-humidity heat pump unit for swimming pool

Abstract

The invention belongs to the technical field of heat pump unit application, and provides a dual-mode swimming pool constant-temperature and constant-humidity heat pump unit which comprises a heat recovery module adopting heat pipes, the heat pipes of the heat recovery module are of an inclined installation structure, and the inclination angle is 15-30 degrees, so that condensate backflow is facilitated, and the heat recovery efficiency is improved; the main evaporator is arranged on the air inlet side of the lower portion of the unit body, flow channels of the main evaporator are asymmetrically arranged, upper dense flow channels are arranged on the upper portion of the main evaporator, and lower sparse flow channels are arranged on the lower portion of the main evaporator. Through cooperative work of the heat recovery module and the double-area condenser, the system achieves optimized utilization of energy, waste heat generated in the dehumidification process can be effectively recovered during refrigeration operation to be used for heating swimming pool water, waste gas heat energy is preferentially utilized under the heating working condition, heat is supplemented through an auxiliary system, and the heat recovery efficiency is improved. And it is ensured that the unit can still stably output in the severe cold environment, and the overall energy efficiency performance of the system is greatly improved through the intelligent switching design of the double working modes.

Description

Technical Field

[0001] This invention belongs to the field of heat pump unit application technology, specifically relating to a dual-mode swimming pool constant temperature and humidity heat pump unit. Background Technology

[0002] Pool heat pump units are high-efficiency and energy-saving devices specifically designed for heating swimming pool water. They are widely used in constant temperature systems for indoor and outdoor pools. Utilizing the reverse Carnot principle, they absorb low-grade heat energy from the air and convert it into high-grade heat energy through the work of a compressor to heat the pool water. Compared with traditional electric heating or gas boilers, they offer significant energy savings.

[0003] When conventional pool heat pump units are operating in cooling and dehumidification mode, the low-temperature waste heat generated on the evaporator side is often directly discharged into the environment without effective recovery and utilization. In heating mode, the system relies solely on the compressor to generate heat, neglecting the recovery and utilization of potential heat sources such as exhaust waste heat. This energy utilization method results in significant energy waste, leading to a system overall energy efficiency ratio generally below 3.5, which is difficult to meet the energy efficiency requirements of modern green buildings. At the same time, when the ambient temperature is below 0°C, traditional units generally experience a sharp decline in heating capacity. Although some equipment uses electric auxiliary heating compensation, this method has high energy consumption and poor temperature control accuracy, and cannot guarantee the stability of pool water temperature and air temperature. Especially in high humidity environments, evaporator frosting will further deteriorate the unit performance and seriously affect system reliability. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a dual-mode swimming pool constant temperature and humidity heat pump unit to solve the problems in the prior art.

[0005] A dual-mode swimming pool constant temperature and humidity heat pump unit includes:

[0006] The heat recovery module uses heat pipes with an inclined installation structure, the inclination angle being 15° to 30°, to facilitate condensate return and improve heat recovery efficiency.

[0007] The main evaporator, with its dual-zone design, is located on the air inlet side at the bottom of the unit. Its flow channels are arranged asymmetrically, with dense upper flow channels and sparse lower flow channels. The flow channel density in the upper zone is higher than that in the lower zone to adapt to the frost distribution under different humidity conditions.

[0008] The dual-zone main condenser is located on the air outlet side of the main evaporator, including a high-temperature heating zone and a low-temperature reheating zone, which are used for pool water heating and air reheating regulation respectively, to achieve independent temperature and humidity control.

[0009] The intelligent defrosting module is equipped with multiple sensors to monitor the frost status on the surface of the main evaporator in real time and perform optimal defrosting.

[0010] The various modules mentioned above together form the unit body, which has dual modes of cooling and dehumidification and heating and reheating. The working fluid flow direction is controlled by the mode switching valve group to ensure continuous and stable operation in low temperature and high humidity environment. The refrigerant pipeline adopts a low resistance design and the key pipeline section is equipped with a sloped oil return structure.

[0011] Preferably, the heat recovery module includes a cross-flow plate-fin heat exchange structure, with the two ends of the heat pipe located in the exhaust air channel and the fresh air channel of the unit body, respectively, to achieve heat recovery; it also has an independent heat pump auxiliary circuit, which is set in parallel with the main refrigeration cycle to enhance the heat recovery capacity under low temperature conditions.

[0012] Preferably, the heat pump auxiliary circuit includes a variable frequency compressor unit, an auxiliary circuit condenser, an auxiliary circuit evaporator, and an antifreeze circulation module. The exhaust port of the variable frequency compressor unit is connected to the inlet of the main condenser through a high-pressure pipeline, and its suction port is connected to the outlet of the auxiliary circuit evaporator through a low-pressure pipeline. The auxiliary circuit condenser is connected in parallel with the high-temperature heating zone in the main condenser and shares the same water system for heating pool water. The antifreeze circulation module is installed in the low-temperature section of the heat pump auxiliary circuit and includes an electric heating element and a temperature sensing controller to start when the ambient temperature is below 5°C to prevent the refrigerant from freezing.

[0013] Preferably, the upper dense flow channel area of ​​the main evaporator is located on the upper half of the windward side, with a flow channel spacing of 1.2 to 1.8 mm, and the lower sparse flow channel area is located on the lower half of the windward side, with a flow channel spacing of 2.5 to 3.0 mm. The bottom of the main evaporator is provided with a water guiding and drainage structure, which is a combination of continuous inclined fins and a water collection tank. The water collection tank extends along the bottom edge of the main evaporator and connects to the external drain port of the unit body to ensure rapid discharge of condensate.

[0014] Preferably, the main evaporator and the auxiliary loop evaporator further include:

[0015] Corrosion-resistant metal substrate housing treated with a hydrophilic coating;

[0016] Hydrophilic surfaces formed through chemical oxidation processes;

[0017] An antibacterial coating is sprayed onto the surface of the heat sink fins. The coating material is composed of silver ion composite material.

[0018] Preferably, the high-temperature heating zone of the main condenser and auxiliary circuit evaporator is made of copper-nickel alloy and is located upstream of the air outlet side for high-temperature refrigerant heat release and water system heating; the low-temperature reheat zone adopts a spiral corrugated pipe structure and is located downstream of the high-temperature heating zone for low-temperature refrigerant to moderately reheat the dehumidified air; the zoned flow control valve group is located at the refrigerant inlet and includes two electromagnetic regulating valves to control the refrigerant flow into the high-temperature heating zone and the low-temperature reheat zone respectively, realizing on-demand distribution.

[0019] Preferably, the intelligent defrosting module includes:

[0020] An infrared thickness detection sensor is installed above the windward side of the main evaporator to monitor the frost thickness in real time.

[0021] The wind pressure difference monitoring unit detects changes in air resistance by measuring the pressure in the air ducts before and after the main evaporator;

[0022] A temperature gradient sensor, comprising multiple temperature measuring points arranged in layers along the depth direction of the main evaporator, is used to acquire information on the temperature difference between the inside and outside of the frost layer.

[0023] Preferably, the intelligent defrosting module further includes:

[0024] Zone control solenoid valve assembly, installed on the refrigerant pipeline, is used to cut off or connect the refrigerant supply to the evaporators in different zones;

[0025] The hot gas bypass pipeline drawn from the compressor exhaust end is connected to the main evaporator inlet after passing through a solenoid valve for reverse heating defrosting; the reverse circulation switching unit includes a four-way reversing valve, which is installed in the main refrigeration cycle to switch the refrigerant flow direction and realize reverse circulation defrosting.

[0026] Preferably, the unit body further includes:

[0027] The modular mounting frame, welded from galvanized steel profiles, is used to secure the core components.

[0028] Quick-connect pipe interfaces are located on the bottom side of the unit body, including quick-connect water pipe connectors and refrigerant service valves, which facilitate on-site installation and maintenance;

[0029] The central control panel is embedded in the front door panel of the unit, which integrates a display screen and operation buttons for parameter setting and operation status display.

[0030] Preferably, the modules are linked and controlled by a PLC, which is installed in an electrical control box located outside the unit. A human-machine interface is provided on the mobile terminal, which communicates with the PLC via Ethernet to support remote monitoring and fault diagnosis, ensuring intelligent operation of the system. The mode switching valve group and the four-way reversing valve work together to ensure that the refrigerant has the shortest path and the smallest pressure drop in different operating modes, ensuring efficient system operation and reliable oil return.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. This invention achieves optimized energy utilization through the coordinated operation of a heat recovery module and a dual-zone condenser. During cooling operation, it can effectively recover the waste heat generated during dehumidification for heating pool water. In heating mode, it prioritizes the use of exhaust gas heat energy and supplements heat through an auxiliary system, ensuring that the unit can still output stably in extremely cold environments. The intelligent switching design of dual working modes greatly improves the overall energy efficiency of the system.

[0033] 2. This invention employs an innovative asymmetric evaporator structure combined with a multi-sensor defrosting system, which not only ensures efficient dehumidification capabilities but also significantly reduces the risk of frost formation. Advanced frost detection technology and zoned defrosting strategy enable precise and rapid defrosting operations while maintaining the temperature stability of the pool environment and improving user comfort.

[0034] 3. This invention adopts a modular architecture and intelligent control scheme, which enables the unit to be installed and maintained quickly. The optimized control system realizes seamless switching of working modes and intelligent adjustment of refrigerant flow path. At the same time, it provides local and remote dual control methods, which greatly simplifies the operation and maintenance management of the equipment. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the present invention;

[0037] Figure 3 This is a schematic diagram showing the structural distribution of each module in this invention.

[0038] In the picture:

[0039] 1. Heat recovery module; 11. Heat exchange structure; 12. Heat pump auxiliary circuit; 2. Main evaporator; 21. Upper dense flow channel; 22. Lower sparse flow channel; 23. Water guiding and drainage structure; 3. Main condenser; 31. High temperature heating zone; 32. Low temperature reheat zone; 33. Zoned flow control valve group; 4. Intelligent defrosting module; 41. Infrared thickness detection sensor; 42. Wind pressure difference monitoring unit; 43. Temperature gradient sensor; 44. Zoned control solenoid valve group; 45. Hot gas bypass pipeline; 46. Reverse circulation switching unit; 5. Unit body. Detailed Implementation

[0040] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0041] like Figures 1 to 3 As shown:

[0042] This invention provides a dual-mode swimming pool constant temperature and humidity heat pump unit, comprising:

[0043] The heat recovery module 1 uses heat pipes with an inclined installation structure, the inclination angle being 15° to 30°, to facilitate condensate return and improve heat recovery efficiency.

[0044] The main evaporator 2 with a dual-zone design is located on the air inlet side at the bottom of the unit body 5. Its flow channels are arranged asymmetrically, with the upper part being a dense upper flow channel 21 and the lower part being a sparse lower flow channel 22. The flow channel density in the upper region is higher than that in the lower region to adapt to the frost distribution under different humidity conditions.

[0045] The dual-zone main condenser 3 is located on the air outlet side of the main evaporator 2, including a high-temperature heating zone 31 and a low-temperature reheating zone 32, which are used for pool water heating and air reheating regulation, respectively, to achieve independent temperature and humidity control.

[0046] The intelligent defrosting module 4 is equipped with multiple sensors to monitor the frost status on the surface of the main evaporator 2 in real time and perform optimal defrosting.

[0047] The various modules described above together form the unit body 5, which has dual modes of cooling and dehumidification and heating and reheating.

[0048] As can be seen from the above, this structural combination realizes the cascade utilization of energy. The heat recovery module 1 works in conjunction with the dual-zone condenser, enabling the system to recover waste heat for pool water heating during cooling and to prioritize the use of exhaust waste heat during heating, thus significantly improving the overall energy efficiency.

[0049] The heat recovery module 1 includes a cross-flow plate-fin heat exchange structure 11, with the two ends of the heat pipe located in the exhaust air channel and the fresh air channel of the unit body 5, respectively, to achieve heat recovery; it also has an independent heat pump auxiliary circuit 12, which is set in parallel with the main refrigeration cycle to enhance the heat recovery capacity under low temperature conditions.

[0050] As can be seen from the above, the composite design of the heat pipe and the heat pump auxiliary circuit 12 forms a two-stage heat recovery system. The heat pipe is responsible for the sensible heat recovery under normal operating conditions, while the heat pump auxiliary circuit 12 improves the stability of heat recovery under all operating conditions through active heat pump circulation in low-temperature environments.

[0051] The heat pump auxiliary circuit 12 includes a variable frequency compressor unit, an auxiliary circuit condenser, an auxiliary circuit evaporator, and an antifreeze circulation module. The exhaust port of the variable frequency compressor unit is connected to the inlet of the main condenser 3 through a high-pressure pipeline, and its suction port is connected to the outlet of the auxiliary circuit evaporator through a low-pressure pipeline. The auxiliary circuit condenser is connected in parallel with the high-temperature heating zone 31 in the main condenser 3 and shares the same water system for heating pool water. The antifreeze circulation module is installed in the low-temperature section of the heat pump auxiliary circuit 12 and includes an electric heating belt and a temperature sensing controller to start when the ambient temperature is below 5°C to prevent the refrigerant from freezing.

[0052] As can be seen from the above, the heat pump auxiliary circuit 12 forms a thermodynamic coupling with the main system. When the heating capacity of the main system is insufficient, the heat pump auxiliary circuit 12 can automatically supplement the heat. At the same time, the antifreeze module ensures the safe operation of the system under extreme low temperatures.

[0053] The upper dense flow channel 21 area of ​​the main evaporator 2 is located on the upper half of the windward side, with a channel spacing of 1.2 to 1.8 mm, and the lower sparse flow channel 22 area is located on the lower half of the windward side, with a channel spacing of 2.5 to 3.0 mm. The bottom of the main evaporator 2 is provided with a water guiding and drainage structure 23, which is a combination of continuous inclined fins and a water collection tank. The water collection tank extends along the bottom edge of the main evaporator 5 and connects to the external drain port of the unit body 5 to ensure rapid discharge of condensate.

[0054] As can be seen from the above, the asymmetric flow channel design enables high humidity airflow to be efficiently dehumidified in the upper dense area and the lower sparse area to reduce the risk of frost formation. Combined with the water guiding and drainage structure 23, it forms a complete humidity management system.

[0055] The main evaporator 2 and the auxiliary loop evaporator also include:

[0056] Corrosion-resistant metal substrate housing treated with a hydrophilic coating;

[0057] Hydrophilic surfaces formed through chemical oxidation processes;

[0058] An antibacterial coating is sprayed onto the surface of the heat sink fins. The coating material is composed of silver ion composite material.

[0059] As can be seen from the above, the entire surface treatment system works synergistically, with hydrophilic properties accelerating the removal of condensate, antibacterial coating inhibiting algae growth, and corrosion-resistant substrate ensuring long-term stable operation in chlorine-containing environments.

[0060] The high-temperature heating zone 31 of the main condenser 3 and the auxiliary circuit evaporator is made of copper-nickel alloy and is located upstream of the air outlet side. It is used for high-temperature refrigerant to release heat and heat the water system. The low-temperature reheat zone 32 adopts a spiral corrugated pipe structure and is located downstream of the high-temperature heating zone 31. It is used for low-temperature refrigerant to moderately reheat the dehumidified air. The zoned flow control valve group 33 is located at the refrigerant inlet and includes two electromagnetic regulating valves, which control the refrigerant flow into the high-temperature heating zone 31 and the low-temperature reheat zone 32 respectively, so as to achieve on-demand distribution.

[0061] As can be seen from the above, the dual-zone structure achieves precise heat distribution. The high-temperature heating zone 31 prioritizes the heating needs of the pool water, while the low-temperature reheating zone 32 regulates the air supply temperature. The valve group dynamically balances the heat ratio between the two zones to avoid energy waste.

[0062] The intelligent defrosting module 4 includes:

[0063] Infrared thickness detection sensor 41 is installed above the windward side of the main evaporator 2 to monitor the frost layer thickness in real time;

[0064] The wind pressure difference monitoring unit 42 detects changes in air resistance by measuring the pressure in the air ducts before and after the main evaporator 2;

[0065] Temperature gradient sensor 43, which includes multiple temperature measuring points, is arranged in layers along the depth direction of the main evaporator 2 to obtain information on the temperature difference between the inside and outside of the frost layer.

[0066] As shown above, multi-sensor data fusion constructs a three-dimensional model of the frost layer, accurately determining the location and extent of frost formation, and providing a basis for decision-making regarding zoned defrosting.

[0067] The intelligent defrosting module 4 also includes:

[0068] Zone control solenoid valve group 44 is installed on the refrigerant pipeline and is used to cut off or connect the refrigerant supply to the evaporators in different zones;

[0069] The hot gas bypass pipe 45, which is drawn from the compressor exhaust end, is connected to the inlet of the main evaporator 2 after passing through a solenoid valve for reverse heating defrosting; the reverse circulation switching unit 46 includes a four-way reversing valve, which is installed in the main refrigeration cycle to switch the refrigerant flow direction and realize reverse circulation defrosting.

[0070] As can be seen from the above, this combined defrosting strategy can select local defrosting or whole-system defrosting according to the frost condition. Hot air bypass and reverse circulation complement each other, which can both quickly defrost and reduce temperature fluctuations.

[0071] The unit body 5 also includes:

[0072] The modular mounting frame, welded from galvanized steel profiles, is used to secure the core components.

[0073] Quick-connect pipe interfaces are located on the bottom side of the unit body 5, including water quick-connect fittings and refrigerant service valves, which facilitate on-site installation and maintenance;

[0074] The central control panel is embedded in the front door panel of the unit body 5, which integrates a display screen and operation buttons for parameter setting and operation status display.

[0075] As can be seen from the above, the modular design allows each functional unit to be disassembled and assembled independently, the quick interface shortens the installation time by 50%, and the centralized control enables efficient human-machine interaction.

[0076] The modules are interconnected and controlled by a PLC, which is installed inside an electrical control box located outside the unit body 5. A human-machine interface is provided on the mobile terminal, which communicates with the PLC via Ethernet to support remote monitoring and fault diagnosis, ensuring intelligent operation of the system. The mode switching valve group and the four-way reversing valve work together to ensure that the refrigerant has the shortest path and the smallest pressure drop in different operating modes, ensuring efficient system operation and reliable oil return.

[0077] As can be seen from the above, the control system forms a three-level intelligent architecture: PLC-based control, local panel operation, and remote mobile monitoring, making the system more convenient to use.

[0078] The accompanying drawings of the embodiments disclosed in this invention only involve structures relevant to the embodiments disclosed in this invention. Other structures can be referred to with common designs. Unless otherwise specified, the same embodiment and different embodiments of this invention can be combined with each other.

[0079] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual mode pool thermostatic and humidistatic heat pump unit, characterized in that: The application relates to a heat recovery module (1) adopting a heat pipe, wherein the heat pipe adopts an inclined installation structure, and the inclination angle is 15-30 degrees; a main evaporator (2) with a double-region design is arranged at the air inlet side of the lower part of a unit body (5), the flow channel of the main evaporator (2) is asymmetrically arranged, the upper part of the main evaporator (2) is provided with an upper dense flow channel (21), the lower part of the main evaporator (2) is provided with a lower sparse flow channel (22), and the flow channel density of the upper part is higher than that of the lower part; a main condenser (3) with a double-region design is arranged at the air outlet side of the main evaporator (2), and the main condenser (3) comprises a high-temperature heating area (31) and a low-temperature reheating area (32) and is used for swimming pool water heating and air reheating adjustment respectively; an intelligent defrosting module (4) is provided with a plurality of sensors and is used for monitoring the frost formation state of the surface of the main evaporator (2) in real time and performing optimal defrosting; and the above-mentioned various modules jointly form the unit body (5), and the unit body (5) has double modes of refrigeration dehumidification and heating reheating. The heat recovery module (1) comprises a cross-flow plate fin type heat exchange structure (11), the two ends of the heat pipe are located in the exhaust air channel and the fresh air channel of the unit body (5) respectively, and the heat recovery module (1) is further provided with an independent heat pump auxiliary loop (12), the heat pump auxiliary loop (12) is arranged in parallel with the main refrigeration cycle and is used for enhancing the heat recovery capacity under low-temperature working conditions. The heat pump auxiliary loop (12) comprises a variable frequency compressor unit, an auxiliary loop condenser, an auxiliary loop evaporator and a freeze-proof circulation module, the exhaust port of the variable frequency compressor unit is connected to the inlet end of the main condenser (3) through a high-pressure pipeline, the suction port of the variable frequency compressor unit is connected to the outlet of the auxiliary loop evaporator through a low-pressure pipeline, the auxiliary loop condenser is arranged in parallel with the high-temperature heating area (31) in the main condenser (3) and shares the same water system and is used for swimming pool water heating, and the freeze-proof circulation module is arranged in the low-temperature section pipeline of the heat pump auxiliary loop (12) and comprises an electric heating belt and a temperature sensing controller and is used for starting when the ambient temperature is lower than 5 DEG C. The upper dense flow channel (21) region of the main evaporator (2) is arranged on the upper half of the windward surface, the flow channel spacing is 1.2-1.8 mm, the lower sparse flow channel (22) region is located on the lower half of the windward surface, the flow channel spacing is 2.5-3.0 mm, the bottom of the main evaporator (2) is provided with a water guide and drainage structure (23), the water guide and drainage structure (23) is a structure combined by continuous inclined fins and a water collecting groove, the water collecting groove extends along the bottom edge of the main evaporator (2) and is connected to the external drainage port of the unit body (5). The main evaporator (2) and the auxiliary loop evaporator further comprise: A corrosion-resistant metal substrate shell treated by hydrophilic film coating; 2. The dual mode pool thermostatic and humidification heat pump unit according to claim 1, characterized in that: A hydrophilic surface formed by a chemical oxidation process; 3. A dual mode pool hydronic heat pump unit as set forth in claim 2, characterized in that: An antibacterial coating sprayed on the surface of the heat dissipation fin, and the composition of the spraying material is a silver ion composite material.

4. The dual mode pool thermostatic heat pump unit of claim 1, wherein: The high-temperature heating area (31) of the main condenser (3) and the auxiliary loop evaporator is made of copper-nickel alloy, is arranged at the upstream of the air outlet side and is used for high-temperature refrigerant heat release and water system heating; the low-temperature reheating area (32) adopts a spiral bellows structure, is arranged at the downstream of the high-temperature heating area (31) and is used for low-temperature refrigerant moderate reheating of the dehumidified air; 5. The dual mode pool thermostatic heat pump unit of claim 1, wherein: ​ ​ ​ ​ 6. The dual mode pool thermostatic heat pump unit as set forth in claim 1, wherein: ​ The partitioned flow control valve group (33) is arranged at the refrigerant inlet and includes two electromagnetic regulating valves for controlling the refrigerant flow into the high-temperature heating area (31) and the low-temperature reheating area (32), respectively.

7. The dual mode pool thermostatic heat pump unit of claim 1, wherein: The intelligent defrosting module (4) comprises: An infrared thickness detection sensor (41) arranged above the windward side of the main evaporator (2) for real-time monitoring of the frost thickness; An air pressure difference monitoring unit (42) for detecting the air resistance change through the pressure of the air ducts before and after the main evaporator (2); A temperature gradient sensor (43) comprising a plurality of temperature measuring points arranged in layers along the depth direction of the main evaporator (2) for obtaining the temperature difference information inside and outside the frost layer.

8. The dual mode pool thermostatic heat pump unit as set forth in claim 1, wherein: The intelligent defrosting module (4) further comprises: A partitioned control electromagnetic valve group (44) arranged on the refrigerant pipeline for cutting off or conducting the refrigerant supply of the evaporators in different areas; A hot gas bypass pipeline (45) connected to the inlet of the main evaporator (2) after passing through an electromagnetic valve for reverse heat supply defrosting; and a reverse circulation switching unit (46) comprising a four-way reversing valve arranged in the main refrigeration cycle for switching the refrigerant flow direction.

9. The dual mode pool thermostatic heat pump unit of claim 1, wherein: The unit body (5) further comprises: A modular mounting frame welded from galvanized steel profiles for fixing the core components; A quick connection pipeline interface arranged at the bottom side of the unit body (5) and comprising a waterway quick plug connector and a refrigerant maintenance valve; A centralized control panel embedded in the front door panel of the unit body (5) and integrated with a display screen and operation keys for parameter setting and running state display.

10. The dual mode pool thermostatic heat pump unit of claim 1, wherein: The modules are linked and controlled through a PLC installed in an electrical control box arranged outside the unit body (5); a human-computer interaction interface is arranged on a mobile phone terminal, which communicates with the PLC through Ethernet, supports remote monitoring and fault diagnosis, and ensures intelligent operation of the system; the mode switching valve group and the four-way reversing valve act in coordination.

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