Dual-mode swimming pool dehumidification heat pump unit refrigeration pipeline design

Abstract

The invention belongs to the technical field of swimming pool application, and provides a dual-mode swimming pool dehumidification heat pump unit refrigeration pipeline design which comprises a compressor module, a dual four-way valve module, a heat exchange module, a throttling module, a bypass control module and an economizer module. Wherein the compressor module comprises a low-temperature compressor, an oil separator and a gas-liquid separator, the double four-way valve module comprises a four-way valve I and a four-way valve II, and the heat exchange module comprises an indoor heat exchanger, an air-cooled condenser and a titanium tube condenser; through the innovative collaborative design of the double-four-way valve module and the bypass control module, seamless switching of three modes of water heating, air cooling and air heating is achieved, and the whole pipeline can intelligently select the optimal refrigerant path and throttling mode in different modes; the problem of pressure loss caused by an overlong refrigerant path or serial connection of throttling devices in a traditional multi-mode pipeline design is effectively avoided, and the operation efficiency and stability of the system are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of swimming pool application technology, specifically relating to a dual-mode swimming pool dehumidification heat pump unit refrigeration pipeline design. Background Technology

[0002] A pool dehumidification heat pump unit is a device specifically designed for use in swimming pool environments. It can effectively control the humidity and temperature of indoor swimming pool areas while also heating the pool water. It is essential for maintaining a comfortable swimming pool environment, protecting building structures from moisture damage, and improving energy efficiency.

[0003] Most pool heat pump systems on the market currently only have a single water heating function, which cannot meet the combined needs of indoor pool environments for air temperature regulation and dehumidification. Users often need to install an additional independent air conditioning system to achieve air conditioning, which not only increases equipment investment costs but also wastes installation space. More seriously, split-type systems have problems such as high energy loss and poor control coordination during operation. In addition, conventional multi-functional heat pump systems usually adopt a complex refrigerant piping design and a multi-stage throttling device series scheme when switching modes. This design results in an excessively long refrigerant flow path, especially in air cooling mode, where the refrigerant needs to flow through unnecessary heat exchangers and throttling devices, causing significant pressure drop losses. Therefore, the system pressure is often difficult to maintain within the optimal operating range, leading to frequent compressor start-stop, which reduces energy efficiency and accelerates equipment aging. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a dual-mode swimming pool dehumidification heat pump unit refrigeration piping design to solve the problems in the prior art.

[0005] A dual-mode swimming pool dehumidification heat pump unit refrigeration piping design includes a compressor module, a dual four-way valve module, a heat exchange module, a throttling module, a bypass control module, and an economizer module;

[0006] The compressor module includes a cryogenic compressor, an oil separator, and a gas-liquid separator; the dual four-way valve module includes four-way valve one and four-way valve two; the heat exchange module includes an indoor heat exchanger, an air-cooled condenser, and a titanium tube condenser; the throttling module includes a thermostatic expansion valve and an electronic expansion valve; the bypass control module includes an electric ball valve, one-way valve one, one-way valve two, one-way valve three, one-way valve four, and one-way valve five; and the economizer module includes an economizer and an economizer expansion valve.

[0007] Through the coordinated configuration of the above modules, the following can be achieved:

[0008] Water heating mode: The refrigerant will pass through a low-temperature compressor, oil separator, four-way valve one, titanium tube condenser, one-way valve three, economizer, copper filter, one-way valve four, electronic expansion valve, air-cooled condenser, four-way valve two and gas-liquid separator, and finally return to the low-temperature compressor.

[0009] Air cooling mode: The refrigerant will pass through the low temperature compressor, oil separator, four-way valve one, four-way valve two, air-cooled condenser, one-way valve five, economizer, one-way valve three, electric ball valve, dryer filter, one-way valve two, thermal expansion valve, indoor heat exchanger, four-way valve two and gas-liquid separator, and finally return to the low temperature compressor.

[0010] Air heating mode: The refrigerant will pass through the low-temperature compressor, oil separator, four-way valve one, four-way valve two, indoor heat exchanger, one-way valve one, electric ball valve, economizer, copper filter, one-way valve four, electronic expansion valve, indoor heat exchanger, four-way valve two and gas-liquid separator, and finally return to the low-temperature compressor.

[0011] Preferably, the bypass control module further includes:

[0012] An electric ball valve is installed between the outlet of the titanium tube condenser and the inlet of the economizer. It is closed when the water is heated and opened when the air is cooled or heated.

[0013] Check valve four and check valve five are connected in parallel, wherein:

[0014] The four-way valves are activated in water heating mode, allowing refrigerant to flow through the copper filter and the electronic expansion valve;

[0015] One-way valve five is activated in air cooling mode, forming a bypass circuit to avoid the electronic expansion valve.

[0016] Preferably, the working logic of the throttling module is as follows:

[0017] Water heating mode: Only the electronic expansion valve is used for throttling;

[0018] Air cooling mode: Only the thermal expansion valve is used for throttling;

[0019] Air heating mode: Only electronic expansion valve throttling is enabled;

[0020] Each mode uses only a single throttling method to maintain stable system pressure.

[0021] Preferably, the economizer module operates as follows:

[0022] Under low-temperature conditions in water heating: the economizer expansion valve opens, and part of the refrigerant evaporates to replenish gas;

[0023] Under normal operating conditions: the economizer acts as a refrigerant passage.

[0024] Preferably, the connection methods of the dual four-way valve modules are as follows:

[0025] Regarding the four-way valve one, its port one is connected to the oil separator, port two is connected to the titanium tube condenser and is in a normally open state, port three is connected to the four-way valve two, and port four is connected to the external balancing pipe for balancing gas pressure.

[0026] Regarding the four-way valve 2, its interface 1 is connected to the four-way valve 1, interface 2 is connected to the ventilation condenser, interface 3 is connected to the indoor heat exchanger, and interface 4 is connected to the gas-liquid separator and is in a normally open state.

[0027] Preferably, the indoor heat exchanger has:

[0028] Air cooling mode: As an evaporator, it achieves cooling and dehumidification through airflow from a fan;

[0029] Air heating mode: It acts as a condenser, heating the air through fan airflow;

[0030] Water heating mode: does not participate in the main heat exchange cycle.

[0031] Preferably, the pipeline design also includes path design:

[0032] In air cooling mode, the electric ball valve opens and the one-way valve is in five-way operation, bypassing the electronic expansion valve and copper filter, thus shortening the path of the refrigerant to the indoor heat exchanger.

[0033] In water heating mode, the refrigerant flows through all necessary components by closing the electric ball valve and opening the four-way check valve.

[0034] Preferably, the pipeline design also includes a pressure protection module:

[0035] A low-pressure sensor and a low-pressure protection switch are installed at the compressor's suction end;

[0036] The indoor heat exchanger is connected to a temperature sensing bulb;

[0037] Dual filtration is achieved through a dryer filter and a copper filter.

[0038] Preferably, the titanium tube condenser has:

[0039] Corrosion-resistant titanium alloy structure;

[0040] The refrigerant inlet is connected to a four-way valve.

[0041] The refrigerant outlet is divided into two routes: the main route passes through an electric ball valve and a copper filter, while the bypass route passes through a check valve and an economizer.

[0042] Preferably, the pipeline design also includes an intelligent control module, which is used for

[0043] Control the on / off state of the electric ball valve;

[0044] Adjust the opening of the economizer expansion valve;

[0045] Monitor system stress and implement protection measures;

[0046] The opening degree of the throttling module.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. This invention achieves seamless switching between three modes—water heating, air cooling, and air heating—through the innovative collaborative design of a dual four-way valve module and a bypass control module. The overall pipeline can intelligently select the optimal refrigerant path and throttling method in different modes, effectively avoiding the pressure loss problem caused by excessively long refrigerant paths or series connection of throttling devices in traditional multi-mode pipeline designs. This significantly improves the system's operating efficiency and stability. In particular, in air cooling mode, the bypass circuit design avoids the electronic expansion valve and copper filter, greatly shortening the refrigerant flow path, reducing pressure drop, and ensuring that the system can maintain the optimal working pressure under various operating conditions.

[0049] 2. This invention integrates pool water heating, air cooling, and heating and dehumidification functions into a single pipeline design through modular design, solving the problems of traditional equipment having single functions and large space occupation. The intelligent air replenishment function of the economizer module significantly improves the compressor energy efficiency under low temperature water heating conditions, while the corrosion-resistant design of the titanium tube condenser ensures the long-term reliability of pool water heating. The pipeline design dynamically adjusts the working status of each component through an intelligent control module, realizing efficient switching and coordinated operation of three modes. Compared with split systems, it can save energy consumption and reduce equipment investment and maintenance costs. Attached Figure Description

[0050] Figure 1 This is a schematic diagram showing the connectivity of the various modules of the present invention;

[0051] In the picture:

[0052] 1. Low-temperature compressor; 2. Oil separator; 3. Gas-liquid separator; 4. Low-pressure sensor; 5. Low-pressure protection switch; 6. Indoor heat exchanger; 7. Temperature sensor; 8. Check valve one; 9. Thermal expansion valve; 10. Check valve two; 11. Dryer filter; 12. Electric ball valve; 13. Check valve three; 14. Copper filter; 15. Check valve four; 16. Electronic expansion valve; 17. Check valve five; 18. Air-cooled condenser; 19. Titanium tube condenser; 20. Economizer expansion valve; 21. Economizer; 22. Four-way valve one; 23. Four-way valve two. Detailed Implementation

[0053] 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.

[0054] Example 1:

[0055] This invention provides a dual-mode swimming pool dehumidification heat pump unit refrigeration piping design, including a compressor module, a dual four-way valve module, a heat exchange module, a throttling module, a bypass control module, and an economizer module;

[0056] The compressor module includes a cryogenic compressor 1, an oil separator 2, and a gas-liquid separator 3; the dual four-way valve module includes four-way valve one 22 and four-way valve two 23; the heat exchange module includes an indoor heat exchanger 6, an air-cooled condenser 18, and a titanium tube condenser 19; the throttling module includes a thermostatic expansion valve 9 and an electronic expansion valve 16; the bypass control module includes an electric ball valve 12, a one-way valve one 8, a one-way valve two 10, a one-way valve three 13, a one-way valve four 15, and a one-way valve five 17; and the economizer module includes an economizer 21 and an economizer expansion valve 20. Through the coordinated configuration of the above modules, the following can be achieved:

[0057] Water heating mode: The refrigerant passes through the cryogenic compressor 1, oil separator 2, four-way valve 1 22, titanium tube condenser 19, one-way valve 3 13, economizer 21 (economizer 21 operates at a specific ambient temperature. When economizer 21 is operating, economizer expansion valve 20 opens, and part of the refrigerant evaporates through economizer 21 and becomes gaseous refrigerant, returning to the cryogenic compressor 1 to replenish gas. Under normal temperature conditions, it is only a refrigeration pipeline), copper filter 14, one-way valve 4 15, electronic expansion valve 16, air-cooled condenser 18, four-way valve 2 23, and gas-liquid separator 3, and finally returns to the cryogenic compressor 1.

[0058] Air Cooling Mode: The refrigerant passes through the low-temperature compressor 1, oil separator 2, four-way valve 1 22, four-way valve 2 23, air-cooled condenser 18, one-way valve 5 17, economizer 21, one-way valve 3 13, electric ball valve 12 (electric ball valve 12 is open in this mode and closed when making hot water), dryer filter 11, one-way valve 2 10, thermal expansion valve 9, indoor heat exchanger 6 (in this mode, indoor heat exchanger 6 acts as an evaporator, and the indoor unit fan drives the airflow to cool and dehumidify the air), four-way valve 2 23 and gas-liquid separator 3, and finally returns to the low-temperature compressor 1;

[0059] Air heating mode: The refrigerant passes through the low-temperature compressor 1, oil separator 2, four-way valve 1 22, four-way valve 2 23, indoor heat exchanger 6 (in this mode, the indoor heat exchanger 6 is a condenser, which heats the air by driving the airflow through the indoor fan), one-way valve 1 8, electric ball valve 12, economizer 21, copper filter 14, one-way valve 4 15, electronic expansion valve 16, indoor heat exchanger 6 (in this mode, the indoor heat exchanger 6 is an evaporator), four-way valve 2 23 and gas-liquid separator 3, and finally returns to the low-temperature compressor 1.

[0060] As shown above, the compressor module consists of a cryogenic compressor 1, an oil separator 2, and a gas-liquid separator 3. The cryogenic compressor 1 compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gas. The oil separator 2 separates and recovers the lubricating oil carried out during the compression process and returns it to the compressor. The gas-liquid separator 3 ensures that only gaseous refrigerant enters the compressor. This module achieves efficient compression and circulation power supply of the refrigerant, while protecting the compressor's stable operation and extending the equipment's service life through oil and gas-liquid separation. The heat exchange module includes a titanium tube condenser 19, an air-cooled condenser 18, and an indoor heat exchanger 6. The titanium tube condenser 19 releases heat as a condenser when heating the pool water. The air-cooled condenser 18 dissipates heat when cooling the air. The indoor heat exchanger 6 acts as an evaporator or condenser depending on the mode. The titanium tube condenser 19, made of titanium alloy, has excellent corrosion resistance and is particularly suitable for the pool water environment, solving the problem of easy corrosion of traditional copper tube heat exchangers.

[0061] The bypass control module also includes: an electric ball valve 12 located between the outlet of the titanium tube condenser 19 and the inlet of the economizer 21, which is closed during water heating and opened during air cooling or heating; one-way valve four 15 and one-way valve five 17 are connected in parallel, wherein: one-way valve four 15 is open in water heating mode, allowing refrigerant to flow through the copper filter 14 and the electronic expansion valve 16; one-way valve five 17 is open in air cooling mode, forming a bypass circuit to avoid the electronic expansion valve 16.

[0062] As can be seen from the above, the bypass control module achieves optimized selection of refrigerant path through the cooperation of electric ball valve 12 and one-way valve group. In air cooling mode, the bypass circuit is opened to avoid electronic expansion valve 16 and copper filter 14, shortening the flow path by about 30% and reducing pressure drop loss. In water heating mode, the bypass is closed to ensure complete system operation. This design significantly improves system efficiency and reduces energy consumption.

[0063] The working logic of the throttling module is as follows: Water heating mode: only the electronic expansion valve 16 is activated for throttling; Air cooling mode: only the thermal expansion valve 9 is activated for throttling; Air heating mode: only the electronic expansion valve 16 is activated for throttling; Each mode uses only a single throttling method to maintain stable system pressure.

[0064] As can be seen from the above, the throttling module consists of an electronic expansion valve 16 and a thermal expansion valve 9. It intelligently selects a single throttling device in different working modes: the electronic expansion valve 16 is used in water heating and air heating modes, and the thermal expansion valve 9 is used in air cooling mode. This design avoids the pressure loss caused by multi-stage throttling in traditional systems, ensures that the system maintains the best working pressure under various working conditions, and effectively improves the energy efficiency ratio.

[0065] The economizer module operates as follows: Under low-temperature water heating conditions, the economizer expansion valve 20 is opened, and part of the refrigerant evaporates to replenish gas; under normal temperature conditions, the economizer 21 serves as a refrigerant channel.

[0066] As can be seen from the above, the economizer module consists of economizer 21 and economizer expansion valve 20. Under low temperature water heating conditions, economizer expansion valve 20 is opened, and some refrigerant evaporates in economizer 21 and returns to the compressor to replenish gas, thereby improving heating efficiency. Under normal temperature conditions, it is used as a normal channel. This design significantly improves the heating performance of the system in low temperature environments, while not affecting the operating efficiency under normal temperature conditions.

[0067] The connection methods of the dual four-way valve modules are as follows: Regarding four-way valve 1 22, its interface 1 is connected to the oil separator 2, interface 2 is connected to the titanium tube condenser 19 and is in a normally open state, interface 3 is connected to four-way valve 2 23, and interface 4 is connected to the external balancing pipe for balancing gas pressure; Regarding four-way valve 2 23, its interface 1 is connected to four-way valve 1 22, interface 2 is connected to the ventilation condenser 18, interface 3 is connected to the indoor heat exchanger 6, and interface 4 is connected to the gas-liquid separator 3 and is in a normally open state.

[0068] As can be seen from the above, the dual four-way valve module includes two four-way reversing valves, four-way valve 1 22 and four-way valve 2 23. Four-way valve 1 22 is mainly responsible for controlling the flow direction of refrigerant between the compressor and the titanium tube condenser 19, while four-way valve 2 23 adjusts the distribution path of refrigerant between the heat exchanger group. Through the coordinated switching of the two four-way valves, the smooth switching of three working modes can be achieved, ensuring that the refrigerant flows according to the preset path and avoiding pressure shocks during mode switching.

[0069] The indoor heat exchanger 6 has the following modes: air cooling mode: acting as an evaporator, it achieves cooling and dehumidification through fan airflow; air heating mode: acting as a condenser, it achieves air heating through fan airflow; water heating mode: it does not participate in the main heat exchange cycle.

[0070] As can be seen from the above, in air cooling mode, indoor heat exchanger 6 operates as an evaporator. Low-temperature, low-pressure liquid refrigerant enters the heat exchanger after being throttled by thermal expansion valve 9, absorbs heat from the indoor air, and evaporates into gas. At the same time, the fan drives the air to flow across the surface of the heat exchanger, achieving the dual effects of air cooling and dehumidification. In air heating mode, indoor heat exchanger 6 operates as a condenser. High-temperature, high-pressure gaseous refrigerant directly enters the heat exchanger, releases heat to the flowing indoor air, and condenses into liquid. The fan sends the heated air into the indoor space. In water heating mode, indoor heat exchanger 6 is isolated from the main system circulation through a four-way valve, maintaining only a small amount of refrigerant circulation to prevent freezing.

[0071] The piping design also includes path design: in air cooling mode, the electric ball valve 12 is opened and the one-way valve 17 is opened to bypass the electronic expansion valve 16 and the copper filter 14, shortening the path of the refrigerant to the indoor heat exchanger 6; in water heating mode, the electric ball valve 12 is closed and the one-way valve 15 is opened to ensure that the refrigerant flows through all necessary components.

[0072] As can be seen from the above, in air cooling mode: electric ball valve 12 is fully open (powered state), and one-way valve 17 automatically opens under the action of pressure difference, forming a bypass path. After the refrigerant comes out of the air-cooled condenser 18, it directly enters the indoor heat exchanger 6 through the short path of one-way valve 17 → economizer 21 → electric ball valve 12 → dryer filter 11 → thermal expansion valve 9, thus completely bypassing electronic expansion valve 16 and copper filter 14. In water heating mode: electric ball valve 12 is de-energized and closed, and one-way valve 15 automatically opens under the action of system pressure difference. The refrigerant must flow through the complete path of copper filter 14 → one-way valve 15 → electronic expansion valve 16 to ensure system filtration and precise throttling.

[0073] The pipeline design also includes a pressure protection module: a low-pressure sensor 4 and a low-pressure protection switch 5 are installed at the compressor suction end; the indoor heat exchanger 6 is connected to a temperature sensing bulb 7; and dual filtration is performed through a dryer filter 11 and a copper filter 14.

[0074] As can be seen from the above, the pressure protection module can monitor the system pressure status in real time and take protective measures in time when the pressure is abnormal. It ensures the cleanliness of the refrigerant through dual filtration, prevents impurities from damaging key components, thereby reducing the failure rate of the pipeline and significantly extending the service life of the overall pipeline.

[0075] The titanium tube condenser 19 has: a titanium alloy corrosion-resistant structure; a refrigerant inlet connected to a four-way valve 22; and a refrigerant outlet divided into two paths: the main path passes through an electric ball valve 12 and a copper filter 14, and the bypass path passes through a one-way valve 13 and an economizer 21.

[0076] As can be seen from the above, the titanium tube condenser 19 is made of titanium alloy material, which has extremely strong resistance to chloride ion corrosion. Its special three-inlet and three-outlet flow design can effectively control the pressure drop and improve the heat exchange efficiency compared with traditional copper tubes.

[0077] Example 2:

[0078] This embodiment is basically the same as the previous embodiment, except that the pipeline design also includes an intelligent control module, which is used to control the on / off state of the electric ball valve 12; adjust the opening of the economizer expansion valve 20; monitor the system pressure and perform protection; and control the opening of the throttling module.

[0079] As can be seen from the above, the intelligent control module is based on a 32-bit ARM processor and uses an adaptive PID algorithm to precisely control the operation of each component. It can automatically identify environmental parameters, select the optimal working mode, adjust the throttle valve opening in real time, monitor the system status, and perform protection.

[0080] 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. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0081] 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 swimming pool dehumidification heat pump unit refrigerant piping design characterized by: The compressor module, the double four-way valve module, the heat exchange module, the throttling module, the bypass control module and the economizer module are connected in series. The compressor module comprises a low-temperature compressor (1), an oil separator (2) and a gas-liquid separator (3), the double four-way valve module comprises a four-way valve one (22) and a four-way valve two (23), the heat exchange module comprises an indoor heat exchanger (6), an air-cooled condenser (18) and a titanium tube condenser (19), the throttling module comprises a thermal expansion valve (9) and an electronic expansion valve (16), the bypass control module comprises an electric ball valve (12), a one-way valve one (8), a one-way valve two (10), a one-way valve three (13), a one-way valve four (15) and a one-way valve five (17), and the economizer module comprises an economizer (21) and an economizer expansion valve (20). Through the cooperative configuration of the above modules, the following modes are realized: Water heating mode: the refrigerant passes through the low-temperature compressor (1), the oil separator (2), the four-way valve one (22), the titanium tube condenser (19), the one-way valve three (13), the economizer (21), the copper filter (14), the one-way valve four (15), the electronic expansion valve (16), the air-cooled condenser (18), the four-way valve two (23) and the gas-liquid separator (3), and finally returns to the low-temperature compressor (1) again; Air cooling mode: the refrigerant passes through the low-temperature compressor (1), the oil separator (2), the four-way valve one (22), the four-way valve two (23), the air-cooled condenser (18), the one-way valve five (17), the economizer (21), the one-way valve three (13), the electric ball valve (12), the dry filter (11), the one-way valve two (10), the thermal expansion valve (9), the indoor heat exchanger (6), the four-way valve two (23) and the gas-liquid separator (3), and finally returns to the low-temperature compressor (1) again; Air heating mode: the refrigerant passes through the low-temperature compressor (1), the oil separator (2), the four-way valve one (22), the four-way valve two (23), the indoor heat exchanger (6), the one-way valve one (8), the electric ball valve (12), the economizer (21), the copper filter (14), the one-way valve four (15), the electronic expansion valve (16), the indoor heat exchanger (6), the four-way valve two (23) and the gas-liquid separator (3), and finally returns to the low-temperature compressor (1) again.

2. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1 wherein: The bypass control module further comprises: The electric ball valve (12) is arranged between the outlet of the titanium tube condenser (19) and the inlet of the economizer (21), which is closed in water heating mode and opened in air cooling or heating mode; The one-way valve four (15) and the one-way valve five (17) are arranged in parallel, wherein: The one-way valve four (15) is turned on in the water heating mode, so that the refrigerant flows through the copper filter (14) and the electronic expansion valve (16); The one-way valve five (17) is turned on in the air cooling mode, forming a bypass loop to bypass the electronic expansion valve (16).

3. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1, wherein: The working logic of the throttling module is: Water heating mode: only the electronic expansion valve (16) is used for throttling; Air cooling mode: only the thermal expansion valve (9) is used for throttling; Air heating mode: only the electronic expansion valve (16) is used for throttling; Each mode only uses a single throttling mode to maintain stable system pressure.

4. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1 wherein: The working mode of the economizer module is: Water heating low-temperature working condition: the economizer expansion valve (20) is opened, and part of the refrigerant evaporates to supplement air; Normal temperature working condition: the economizer (21) is used as a refrigerant passage.

5. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1, wherein: The connection modes of the double four-way valve module are respectively: Regarding the four-way valve one (22), the interface one is connected with the oil separator (2), the interface two is connected with the titanium tube condenser (19) and is always open, the interface three is connected with the four-way valve two (23), and the interface four is connected with the external balance pipe for balancing air pressure; Regarding the four-way valve two (23), the interface one is connected with the four-way valve one (22), the interface two is connected with the air-cooled condenser (18), the interface three is connected with the indoor heat exchanger (6), and the interface four is connected with the gas-liquid separator (3) and is always open.

6. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1, wherein: The indoor heat exchanger (6) has: Air cooling mode: as an evaporator, air flow is realized through a fan to achieve refrigeration and dehumidification; Air heating mode: as a condenser, air flow is realized through a fan to achieve air heating; Water heating mode: does not participate in the main heat exchange cycle.

7. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1, wherein: The pipeline design also includes path design: In the air cooling mode, the electric ball valve (12) is opened and the one-way valve five (17) is conducted to avoid the electronic expansion valve (16) and the copper filter (14), thereby shortening the path of the refrigerant to the indoor heat exchanger (6); In the water heating mode, the electric ball valve (12) is closed and the one-way valve four (15) is conducted to ensure that the refrigerant flows through all necessary components.

8. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1, wherein: The pipeline design also includes a pressure protection module: A low-pressure sensor (4) and a low-pressure protection switch (5) are arranged at the suction end of the compressor; The indoor heat exchanger (6) is connected with a temperature sensing bag (7); Double filtration is performed through the dry filter (11) and the copper filter (14).

9. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1, wherein: The titanium tube condenser (19) has: Titanium alloy corrosion-resistant structure; The refrigerant inlet is connected with the four-way valve one (22); The refrigerant outlet is divided into two paths: the main path passes through the electric ball valve (12) and the copper filter (14), and the bypass path passes through the one-way valve three (13) and the economizer (21).

10. A dual mode swimming pool dehumidification heat pump unit refrigerant piping design as claimed in claim 1, wherein: The pipeline design also includes an intelligent control module, which is used to Control the on-off state of the electric ball valve (12); Adjust the opening degree of the economizer expansion valve (20); Monitor the system pressure and perform protection; The opening degree of the throttling module.

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