Full-recovery water source heat pump central air-conditioning system

Abstract

The invention relates to the field of central air-conditioning systems, in particular to a full-recovery water source heat pump central air-conditioning system. The ground source heat pump system solves the technical problems that when a ground source heat pump system in the prior art is used in a region where the difference between the refrigerating duration in summer and the heating duration in winter is large, the heat exchange capacity of a buried pipe is gradually attenuated along with the duration, so that the refrigerating and heating effects are affected, and the installation limitation of the ground source heat pump system is obvious when the buried pipe system is installed. According to the technical scheme, the full-recovery water source heat pump central air-conditioning system comprises a temperature generation module, a heat exchange module, a heat exchange module, an auxiliary refrigeration module, a cooling module, a water supply module and an auxiliary heating module; auxiliary is carried out during refrigeration and heating in an auxiliary refrigeration and auxiliary heating mode, the heat exchange efficiency of the system is improved, heat exchange is carried out on high-temperature water generated by a main machine through multiple sets of heat exchange structures, air conditioner energy consumption is reduced, the cooling tower structure can be miniaturized, and therefore the limitation of the system during installation and construction is reduced, and the cost is reduced. And the application range of the system is expanded.

Description

Technical Field

[0001] The invention relates to the field of central air-conditioning systems, and in particular to a full-recovery water source heat pump central air-conditioning system. Background Art

[0002] The ground source heat pump central air conditioning system is a new energy utilization technology that uses shallow geothermal energy for heating and cooling. It is a type of heat pump. A heat pump is a device that uses the Carnot cycle and reverse Carnot cycle principles to transfer cold and heat. A ground source heat pump usually refers to a device that can transfer heat or cold in the underground soil to where it is needed; usually heat pumps are used for air conditioning, cooling or heating; ground source heat pumps also use the huge heat and cold storage capacity of the underground soil. In winter, the ground source transfers heat from the underground soil to the building, and in summer, the cold is transferred from the underground to the building. However, the existing ground source heat pump system requires drilling for the construction of buried pipes, so the building where the ground source heat pump is installed must have a site for drilling. During the construction of the buried pipe system, a sufficient distance must be maintained between the boreholes. In order to ensure that the heat and cold input by the ground source heat pump to the underground can be absorbed by the earth, the boreholes cannot be arranged too far. Because the temperature of the rock and soil layers in contact with the buried pipes is similar, a larger area of ​​the garden needs to be drilled, otherwise it will cause an imbalance of underground energy, causing the temperature of the rock and soil layers in contact with the buried pipes to rise or fall and cannot return to normal levels, resulting in a decrease in system efficiency and an increase in energy consumption. In addition, when the ground source heat pump system of the prior art is used in areas where the difference in the duration of cooling in summer and heating in winter increases, the heat discharged into the ground in high-latitude areas in summer is much lower than the heat extracted in winter, which will cause the temperature of the rock and soil layers around the buried pipes to decline all year round. It will become very difficult for the ground source heat pump to extract heat from the low-temperature rock and soil layers, resulting in a significant decrease in system efficiency and the heating temperature cannot meet the use requirements. In low-latitude areas, the cooling time in summer is much longer than the heating time in winter, and some areas do not even need heating in winter. This will cause the temperature of the rock and soil layers around the ground source heat pump buried pipe system to rise rapidly, resulting in a decrease in efficiency. Summary of the invention

[0003] In order to overcome the problem that when the ground source heat pump system of the prior art is used in areas with a large difference in the duration of cooling in summer and heating in winter, there will be a large difference between the heat discharged into the ground and the heat extracted, which makes it very difficult for the ground source heat pump to extract heat and cold from the rock and soil layers, resulting in a significant decrease in system efficiency, and the heating and cooling temperatures cannot meet the use requirements. In addition, when installing the buried pipe system of the ground source heat pump system, a sufficient distance must be maintained between the boreholes, and a large area is required for construction, resulting in obvious installation limitations of the ground source heat pump system under the prior art.

[0004] The technical solution of the present invention is: a fully recovered water source heat pump central air conditioning system, comprising:

[0005] The temperature generating module is used to deliver the generated high-temperature hot water into the room through the pipeline and connect to the heat exchange module;

[0006] The heat exchange module is used to exchange heat with the high-temperature hot water connected to the heat exchange module through the heat exchange equipment, and send the hot water to the heat exchange module to further reduce the energy consumption of the air conditioner;

[0007] The heat exchange module is used to transfer the high-temperature hot water introduced from the heat exchange module to a heat exchanger for further heat exchange, thereby further reducing the energy consumption of the air conditioner;

[0008] The auxiliary refrigeration module is used to introduce the liquid in the return water pipe on the source side of the water source heat pump into the auxiliary refrigeration module through a pipeline, and control the inlet water temperature by spraying and cooling to assist refrigeration;

[0009] The cooling module is used to send the low-temperature water exported from the auxiliary refrigeration module to the main unit through the pipeline, and send the chilled water taken by the main unit into the room to cool the room;

[0010] Water supply module, used to deliver municipal tap water to various water use points indoors;

[0011] The auxiliary heating module is used to perform auxiliary heating on the water side of the water source heat pump using an auxiliary heat source in winter.

[0012] Preferably, the high-temperature hot water generated by the temperature generating module is sent into the room through a pipeline and connected to the heat exchange module. The high-temperature hot water connected to the heat exchange module is heat exchanged through the heat exchange module, and the hot water is sent to the heat exchange module, thereby further reducing the energy consumption of the air conditioner. The high-temperature hot water introduced from the heat exchange module is heat exchanged again through the heat exchanger through the heat exchange module, thereby further reducing the energy consumption of the air conditioner. The liquid in the return water pipe on the source side of the water source heat pump is introduced into the auxiliary refrigeration module through a pipeline through the auxiliary refrigeration module, and the inlet water temperature is controlled by spraying cooling to assist in refrigeration. The low-temperature water exported from the auxiliary refrigeration module is sent to the main unit through a pipeline through the cooling module, and the chilled water taken by the main unit is sent into the room to cool the room. The municipal tap water is sent to various water use points in the room through the water supply module, and the auxiliary heat source is used through the auxiliary heating module to perform auxiliary heating on the water side of the water source heat pump in winter.

[0013] Preferably, the temperature generating module comprises a water source heat pump host, a heat exchange water tank and a three-way valve. The water source heat pump host is used to transfer the heat of the indoor return water to the host, and the low-temperature heat source is increased to high-temperature hot water by using the principle of heat pump cycle, and further transported to the heat exchange coil of the heat exchange water tank through pipelines and three-way valves;

[0014] When the temperature generating module works, the following steps are included:

[0015] S11: The return water after heat exchange with the indoor air flows through the evaporator of the water source heat pump host and exchanges heat with the refrigerant in the host. The heat of the return water will be transferred to the refrigerant, causing it to evaporate into gas;

[0016] S12: The gaseous refrigerant will be extracted and compressed by the compressor, and the temperature and pressure of the refrigerant will increase significantly;

[0017] S13: The high-temperature and high-pressure refrigerant flows to the condenser, where it exchanges heat with the hot water in the condenser heat exchange coil, causing the temperature of the hot water to rise while the refrigerant cools and becomes liquid;

[0018] S14: The condensed liquid refrigerant passes through the throttle valve to reduce its pressure and re-enters the evaporator;

[0019] S15: Repeat S11-S14 to realize the cycle of converting the heat of groundwater into high-temperature hot water;

[0020] S16: High-temperature hot water is transported to the heat exchange coil in the heat exchange water tank through pipelines;

[0021] S17: When the high-temperature hot water passes through the heat exchange coil, the heat will be transferred to the water molecules in the water tank through the tube wall, raising its temperature. At the same time, the cooled hot water will continue to flow to keep the heat exchange going;

[0022] S18: The high-temperature hot water is exchanged with the domestic water in the heat exchange water tank and then connected to the heat exchange module through a pipeline.

[0023] Preferably, the heat exchange module includes a heat exchange exhaust fan and a condensate heat exchanger. The high-temperature hot water is respectively connected to the heat exchange exhaust fan and the condensate heat exchanger after exchanging heat with the domestic water in the water tank in the heat exchange water tank. The heat exchange exhaust fan subjects the hot water sent into the temperature generating module to secondary heat exchange treatment through the integrated heat exchange coil inside the exhaust fan. The heat exchange exhaust fan uses the waste heat energy in the exhaust process to reduce the temperature of the hot water. The hot water sent into the temperature generating module is subjected to secondary heat exchange treatment through the condensation heat exchange structure of the condensate heat exchanger. The condensate heat exchanger uses the low-temperature condensate generated during air conditioning to exchange heat with the hot water. The hot water after the secondary heat exchange is then sent to the heat exchange module through a pipeline.

[0024] Preferably, multiple indoor systems that can take away heat, such as exhaust air and condensed water, are fully utilized through a heat exchange exhaust fan and a condensed water heat exchanger to exchange heat with the hot water generated by the host, thereby further reducing the energy consumption of air conditioning.

[0025] Preferably, the heat exchange module includes a waterscape heat exchanger and a swimming pool bottom heat exchanger; the hot water after the secondary heat exchange is heat exchanged again through the waterscape heat exchanger and the swimming pool bottom heat exchanger; the swimming pool bottom heat exchanger heat exchanges the water in the waterscape device with the hot water in the swimming pool, thereby raising the temperature of the hot water in the swimming pool again, and the water in the swimming pool bottom device is cooled after the heat exchange, thereby realizing energy recovery and reuse. At the same time, the swimming pool bottom heat exchanger can disperse the water evenly through the water circulation process, ensure the uniform temperature distribution in the swimming pool, and improve the overall thermal energy utilization efficiency.

[0026] Preferably, the hot water after the secondary heat exchange is heat exchanged again through the waterscape heat exchanger and the pool bottom heat exchanger, so that the outdoor waterscape and swimming pool are also fully utilized and heat exchanged with the high-temperature water generated by the host, thereby reducing the air conditioning energy consumption again.

[0027] Preferably, the auxiliary refrigeration module includes a closed cooling tower, a water supply tank, a temperature sensor, a fan motor, a cooling water circulation pump and a cooling tower thermostat; the return water pipe on the source side of the water source heat pump enters the closed cooling tower through the pipeline, and a temperature sensor is installed on the cooling tower inlet pipe, which is linked with the fan motor and the cooling water circulation pump of the cooling tower. The fan motor and the cooling water circulation pump of the cooling tower are controlled by the cooling tower thermostat. When the inlet water temperature is higher than the set temperature, the cooling tower fan and the cooling water circulation pump are started, and the high-temperature water in the water pipe is sprayed for cooling, and the heat is taken away by the fan motor. When the inlet water temperature is lower than the set temperature, the cooling tower fan and the cooling water circulation pump are kept closed.

[0028] Preferably, the auxiliary refrigeration module comprises the following steps when working:

[0029] S21: Install a temperature probe on the water inlet pipe of the cooling tower and ensure that the probe is well connected to the controller of the cooling tower fan motor and the cooling water circulation pump;

[0030] S22: Set a target temperature through the thermostat, and the target temperature is normally set to 30°C;

[0031] S23: The thermostat receives the inlet water temperature data monitored by the temperature sensor in real time and compares it with the set target temperature; when the monitored inlet water temperature is higher than the set target temperature, it enters S24; when the monitored inlet water temperature is lower than the set target temperature, it enters S26;

[0032] S24: When the monitored inlet water temperature is higher than the set target temperature, the thermostat sends a signal to start the fan motor and the cooling water circulation pump;

[0033] S25: Start the fan motor to increase air circulation and make the cooling water circulation pump work at the same time, spray and dissipate the high-temperature water through the cooling tower, and exchange heat through direct contact between air and water to reduce the water temperature;

[0034] S26: If the monitored inlet water temperature is lower than the set target temperature, the cooling tower thermostat will keep the cooling tower fan motor and cooling water circulation pump in the off state;

[0035] S27: Repeat S23-S26. The system will continue to perform real-time monitoring and corresponding temperature control operations to ensure that the cooling tower can efficiently cool the water flowing through it.

[0036] Preferably, the cooling tower is the final cooling measure. Multiple cooling treatments are performed through the heat exchange module and the heat transfer module, so that the structure of the cooling tower can be miniaturized, making the cooling tower easier to install and more energy-efficient. Multiple heat exchange devices can be combined and set according to actual conditions, which is flexible and convenient, and can maximize energy saving while simplifying the system.

[0037] Preferably, the cooling module includes a three-way valve, a water source circulation pump and an indoor fan coil; the low-temperature water coming out of the cooling tower is sent into the water source heat pump main unit through pipelines and three-way valves through the water source side circulation pump, and the chilled water taken by the water source heat pump main unit is circulated and heat exchanged with the indoor fan coil through pipelines to cool the room.

[0038] Preferably, the cooling module comprises the following steps when working:

[0039] S31: Low-temperature water cooled by the cooling tower flows through the pipeline and passes through a three-way valve that can be adjusted according to system requirements;

[0040] S32: The circulating pump on the water source side delivers low-temperature water to the water source heat pump host to provide it with the necessary cooling water source;

[0041] S33: heat exchange is performed inside the water source heat pump host, and the refrigerant absorbs the heat of the water to produce chilled water;

[0042] S34: The produced chilled water is transported to the indoor fan coil unit;

[0043] S35: The indoor fan coil transfers the indoor heat to the chilled water through the heat exchange between the air and the chilled water, thereby achieving the purpose of lowering the indoor temperature;

[0044] S36: The water with increased temperature after heat exchange returns to the cooling tower for cooling again, completing a cycle;

[0045] S37: Repeat S31-S36 to perform cyclic heat exchange.

[0046] Preferably, the water supply module includes a main water meter and a variable frequency constant pressure pump for domestic water; municipal tap water passes through the main water meter and enters the heat exchange water tank through a pipe, and is sent to indoor domestic water points after heat exchange with the high-temperature hot water on the source side of the water source heat pump. The domestic water is sent to each water point through a variable frequency constant pressure pump for domestic water.

[0047] Preferably, by combining the heat exchange water tank with the indoor domestic water system, when indoor water is used in cooling mode, tap water will be replenished into the heat exchange water tank, and the replenished low-temperature tap water will exchange heat with the high-temperature water generated on the source side of the water source heat pump through the heat exchange coil in the water tank, thereby making full use of the indoor water, allowing the domestic water to drain away a part of the heat generated by the water source heat pump host while reducing the energy consumption of the air conditioner. At the same time, the high-temperature tap water after heat exchange will reduce the energy consumption of the water heater after being sent to the water heater. The heat exchange water tank can not only exchange heat for the host and domestic water, but also play a buffering and voltage stabilizing role for domestic water, thereby enhancing the stability of indoor domestic water.

[0048] Preferably, the auxiliary heating module includes a winter auxiliary heat source, an auxiliary heat source controller, a three-way valve and a temperature sensing probe; the winter auxiliary heat source is a gas furnace, an air source heat pump or a solar energy device, and the auxiliary heat source controller can switch the direction of the pipeline water flow during heating and cooling through two sets of three-way valves. The auxiliary heat source controller controls the start and stop of the auxiliary heat source through the water temperature sensed by the temperature sensing probe. When the water temperature in the water tank is lower than 15°C, the auxiliary heat source starts to heat the water in the water tank. When the water temperature in the water tank is higher than 30°C, the auxiliary heat source is shut down and stops heating the water in the water tank.

[0049] The auxiliary heating module works by:

[0050] S41: The temperature sensor monitors the water temperature in the water tank in real time and sends this data to the auxiliary heat source controller;

[0051] S42: Controller evaluation: The auxiliary heat source controller determines whether the current water temperature is within the set temperature range based on the water temperature data provided by the temperature sensor. The water temperature range is set to 15°C-30°C.

[0052] S43: If the water temperature in the water tank is lower than the minimum set temperature (15°C), the auxiliary heat source controller sends a command to start the winter auxiliary heat source, such as a gas furnace or a solar energy device, to start heating the water in the water tank;

[0053] S44: The controller simultaneously controls two sets of three-way valves to adjust the water flow direction to ensure that the heat energy provided by the auxiliary heat source can enter the system circulation;

[0054] S45: When the water temperature in the water tank reaches or exceeds the set high temperature threshold (30°C), the auxiliary heat source controller instructs the auxiliary heat source to stop heating;

[0055] S46: the three-way valve switches again, and when the auxiliary heat source needs to be closed, the controller ensures that the three-way valve is in a position to close the flow path of the auxiliary heat source;

[0056] S47: Repeat S41-S46 for cyclic judgment, the auxiliary heat source controller continues to receive information from the temperature sensor, and periodically evaluates whether to activate or stop the auxiliary heat source according to the change of water temperature.

[0057] Beneficial effects of the present invention:

[0058] 1. Compared with the existing ground source heat pump system, when it is used in areas with large differences in the duration of cooling in summer and heating in winter, the difference between the heat discharged into the ground and the heat extracted will be large, which makes it very difficult for the ground source heat pump to extract heat and cold from the rock and soil layer, resulting in a significant decrease in system efficiency, and the heating and cooling temperatures cannot meet the use requirements. In addition, when installing the buried pipe system of the ground source heat pump system, a sufficient distance needs to be maintained between the boreholes, and a large area needs to be constructed, resulting in obvious installation restrictions on the ground source heat pump system under the existing technology. When cooling in summer and heating in winter, the system assists in cooling and heating by auxiliary cooling and auxiliary heating, which improves the efficiency of the system in extracting heat and cold from the rock and soil layer, so that the system can operate stably, and the heat exchange of multiple sets of heat exchange structures with the high-temperature water generated by the host reduces the energy consumption of air conditioning, so that the cooling tower structure can be miniaturized, so that houses that do not have the conditions for ground source heat pump drilling can also use this system, thereby reducing the restrictions on the installation and construction of the system and improving the application scope of the system;

[0059] 2. The return water pipe on the source side of the water source heat pump enters the closed cooling tower through the pipeline. A temperature sensor is installed on the water inlet pipe of the cooling tower, which is linked with the fan motor and cooling water circulation pump of the cooling tower. The fan motor and cooling water circulation pump of the cooling tower are controlled by the cooling tower thermostat. When the inlet water temperature is higher than the set temperature, the cooling tower fan and cooling water circulation pump are started, and the high-temperature water in the water pipe is sprayed to cool down. The heat is taken away by the fan motor. When the inlet water temperature is lower than the set temperature, the cooling tower fan and cooling water circulation pump are kept closed. The auxiliary heat source in winter is a gas furnace or For solar energy equipment, the auxiliary heat source controller can switch the direction of water flow in the pipeline during heating and cooling through two sets of three-way valves. The auxiliary heat source controller controls the start and stop of the auxiliary heat source through the water temperature sensed by the temperature sensor. When the water temperature in the water tank is lower than 15°C, the auxiliary heat source starts to heat the water in the water tank. When the water temperature in the water tank is higher than 30°C, the auxiliary heat source stops heating the water in the water tank. Thus, auxiliary cooling and auxiliary heating are used to assist in cooling and heating, which improves the efficiency of the system in extracting heat and cold from the rock and soil layer, and enables the system to operate stably.

[0060] 3. By combining the heat exchange water tank with the indoor domestic water system, when indoor water is used in cooling mode, tap water will be added to the heat exchange water tank, and the low-temperature tap water added will exchange heat with the high-temperature water generated on the source side of the water source heat pump through the heat exchange coil in the water tank, thereby making full use of the indoor water, allowing the domestic water to drain away part of the heat generated by the water source heat pump host, reducing the energy consumption of the air conditioner, and at the same time, the high-temperature tap water after heat exchange will be sent to the water heater to reduce the energy consumption of the water heater. The heat exchange water tank can not only exchange heat for the host and domestic water, but also play a buffering and voltage stabilizing role for domestic water, thereby enhancing the stability of indoor domestic water, and exhausting the air through the heat exchange exhaust fan and the condensing water heat exchanger. , condensed water and other indoor systems that can take away heat are fully utilized to exchange heat with the hot water generated by the host, further reducing the energy consumption of air conditioning. The hot water after the secondary heat exchange is heat-exchanged again through the waterscape heat exchanger and the heat exchanger at the bottom of the swimming pool, so that the outdoor waterscape and swimming pool are also fully utilized to exchange heat with the high-temperature water generated by the host, thereby reducing the energy consumption of air conditioning again. The cooling tower is the last cooling measure. Through the heat exchange module and the heat exchange module, multiple cooling treatments are carried out, so that the structure of the cooling tower can be miniaturized, making the cooling tower easier to install and more energy-efficient. Multiple heat exchange equipment can be combined and set according to actual conditions, which is flexible and convenient, and maximizes energy saving while simplifying the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 Shown is a schematic diagram of the working process of the auxiliary refrigeration module of the full-recovery water source heat pump central air-conditioning system of the present invention;

[0062] Figure 2 Shown is a schematic diagram of the cooling module working process of the full-recovery water source heat pump central air conditioning system of the present invention;

[0063] Figure 3 Shown is a schematic diagram of the working process of the auxiliary heating module of the full-recovery water source heat pump central air-conditioning system of the present invention;

[0064] Figure 4 Shown is a schematic diagram of the structure of the full-recovery water source heat pump central air-conditioning system of the present invention. DETAILED DESCRIPTION

[0065] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0066] See also Figure 1-4 The present invention provides an embodiment: a fully recovered water source heat pump central air conditioning system, comprising:

[0067] The temperature generating module is used to deliver the generated high-temperature hot water into the room through the pipeline and connect to the heat exchange module;

[0068] The heat exchange module is used to exchange heat with the high-temperature hot water connected to the heat exchange module through the heat exchange equipment, and send the hot water to the heat exchange module to further reduce the energy consumption of the air conditioner;

[0069] The heat exchange module is used to transfer the high-temperature hot water introduced from the heat exchange module to a heat exchanger for further heat exchange, thereby further reducing the energy consumption of the air conditioner;

[0070] The auxiliary refrigeration module is used to introduce the liquid in the return water pipe on the source side of the water source heat pump into the auxiliary refrigeration module through a pipeline, and control the inlet water temperature by spraying and cooling to assist refrigeration;

[0071] The cooling module is used to send the low-temperature water exported from the auxiliary refrigeration module to the main unit through the pipeline, and send the chilled water taken by the main unit into the room to cool the room;

[0072] Water supply module, used to deliver municipal tap water to various water use points indoors;

[0073] The auxiliary heating module is used to perform auxiliary heating on the water side of the water source heat pump using an auxiliary heat source in winter.

[0074] Preferably, the temperature generating module comprises a water source heat pump host, a heat exchange water tank and a three-way valve. The water source heat pump host is used to transfer the heat of the indoor return water to the host, and the low-temperature heat source is increased to high-temperature hot water by using the principle of heat pump cycle, and further transported to the heat exchange coil of the heat exchange water tank through pipelines and three-way valves;

[0075] When the temperature generating module works, the following steps are included:

[0076] S11: The return water after heat exchange with indoor air on the load side flows through the evaporator of the water source heat pump host, and after cooling, it is sent to the indoor fan coil to cool the room;

[0077] S12: The source side cold water after cooling flows through the condenser of the water source heat pump host, and after heating, it is transported to the heat exchange coil in the heat exchange water tank through the three-way valve and pipeline;

[0078] S13: When the high-temperature hot water passes through the heat exchange coil, the heat will be exchanged with the low-temperature water in the water tank, causing its temperature to rise. At the same time, the cooled hot water will continue to flow to keep the heat exchange going;

[0079] S14: The high-temperature hot water is exchanged with the domestic water in the heat exchange water tank and then connected to the heat exchange module through a pipeline.

[0080] Preferably, the heat exchange module includes a heat exchange exhaust fan and a condensate heat exchanger. The high-temperature hot water is respectively connected to the heat exchange exhaust fan and the condensate heat exchanger after exchanging heat with the domestic water in the heat exchange water tank. The heat exchange exhaust fan subjects the hot water sent into the temperature generating module to secondary heat exchange treatment through the integrated heat exchange coil inside the exhaust fan. The heat exchange exhaust fan uses the waste heat energy in the exhaust process to reduce the temperature of the hot water. The hot water sent into the temperature generating module is subjected to secondary heat exchange treatment through the condensation heat exchange structure of the condensate heat exchanger. The condensate heat exchanger uses the low-temperature condensate generated during air conditioning to exchange heat with the hot water. The hot water after the secondary heat exchange is then sent to the heat exchange module through a pipeline.

[0081] Preferably, multiple indoor systems that can take away heat, such as exhaust air and condensed water, are fully utilized through a heat exchange exhaust fan and a condensed water heat exchanger to exchange heat with the hot water generated by the host, thereby further reducing the energy consumption of air conditioning.

[0082] Preferably, the heat exchange module includes a waterscape heat exchanger and a swimming pool bottom heat exchanger; the hot water after the secondary heat exchange is heat exchanged again through the waterscape heat exchanger and the swimming pool bottom heat exchanger; the swimming pool bottom heat exchanger heat exchanges the water in the waterscape device with the hot water in the swimming pool, thereby raising the temperature of the hot water in the swimming pool again, and the water in the swimming pool bottom device is cooled after the heat exchange, thereby realizing energy recovery and reuse. At the same time, the swimming pool bottom heat exchanger can disperse the water evenly through the water circulation process, ensure the uniform temperature distribution in the swimming pool, and improve the overall thermal energy utilization efficiency.

[0083] Preferably, the hot water after the secondary heat exchange is heat exchanged again through the waterscape heat exchanger and the pool bottom heat exchanger, so that the outdoor waterscape and swimming pool are also fully utilized and heat exchanged with the high-temperature water generated by the host, thereby reducing the air conditioning energy consumption again.

[0084] Preferably, the auxiliary refrigeration module includes a closed cooling tower, a water supply tank, a temperature sensor, a fan motor, a cooling water circulation pump and a cooling tower thermostat; the return water pipe on the source side of the water source heat pump enters the closed cooling tower through the pipeline, and a temperature sensor is installed on the cooling tower inlet pipe, which is linked with the fan motor and the cooling water circulation pump of the cooling tower. The fan motor and the cooling water circulation pump of the cooling tower are controlled by the cooling tower thermostat. When the inlet water temperature is higher than the set temperature, the cooling tower fan and the cooling water circulation pump are started, and the high-temperature water in the water pipe is sprayed for cooling, and the heat is taken away by the fan motor. When the inlet water temperature is lower than the set temperature, the cooling tower fan and the cooling water circulation pump are kept closed.

[0085] Preferably, the auxiliary refrigeration module comprises the following steps when working:

[0086] S21: Install a temperature probe on the water inlet pipe of the cooling tower and ensure that the probe is well connected to the controller of the cooling tower fan motor and the cooling water circulation pump;

[0087] S22: Set a target temperature through the thermostat, and the target temperature is normally set to 30°C;

[0088] S23: The thermostat receives the inlet water temperature data monitored by the temperature sensor in real time and compares it with the set target temperature; when the monitored inlet water temperature is higher than the set target temperature, it enters S24; when the monitored inlet water temperature is lower than the set target temperature, it enters S26;

[0089] S24: When the monitored inlet water temperature is higher than the set target temperature, the thermostat sends a signal to start the fan motor and the cooling water circulation pump;

[0090] S25: Start the fan motor to increase air circulation and make the cooling water circulation pump work at the same time, spray and dissipate the high-temperature water through the cooling tower, and exchange heat through direct contact between air and water to reduce the water temperature;

[0091] S26: If the monitored inlet water temperature is lower than the set target temperature, the cooling tower thermostat will keep the cooling tower fan motor and cooling water circulation pump in the off state;

[0092] S27: Repeat S23-S26. The system will continue to perform real-time monitoring and corresponding temperature control operations to ensure that the cooling tower can efficiently cool the water flowing through it.

[0093] Preferably, the cooling tower is the final cooling measure. Multiple cooling treatments are performed through the heat exchange module and the heat transfer module, so that the structure of the cooling tower can be miniaturized, making the cooling tower easier to install and more energy-efficient. Multiple heat exchange devices can be combined and set according to actual conditions, which is flexible and convenient, and can maximize energy saving while simplifying the system.

[0094] Preferably, the cooling module includes a three-way valve, a water source circulation pump and an indoor fan coil; the low-temperature water coming out of the cooling tower is sent into the water source heat pump main unit through pipelines and three-way valves through the water source side circulation pump, and the chilled water taken by the water source heat pump main unit is circulated and heat exchanged with the indoor fan coil through pipelines to cool the room.

[0095] Preferably, the cooling module comprises the following steps when working:

[0096] S31: Low-temperature water cooled by the cooling tower flows through the pipeline and passes through a three-way valve that can be adjusted according to system requirements;

[0097] S32: The circulating pump on the water source side delivers low-temperature water to the water source heat pump host to provide it with the necessary cooling water source;

[0098] S33: heat exchange is performed inside the water source heat pump host, and the refrigerant absorbs the heat of the water to produce chilled water;

[0099] S34: The produced chilled water is transported to the indoor fan coil unit;

[0100] S35: The indoor fan coil transfers the indoor heat to the chilled water through the heat exchange between the air and the chilled water, thereby achieving the purpose of lowering the indoor temperature;

[0101] S36: The water with increased temperature after heat exchange returns to the cooling tower for cooling again, completing a cycle;

[0102] S37: Repeat S31-S36 to perform cyclic heat exchange.

[0103] Preferably, the water supply module includes a main water meter and a variable frequency constant pressure pump for domestic water; municipal tap water passes through the main water meter and enters the heat exchange water tank through a pipe, and is sent to indoor domestic water points after heat exchange with the high-temperature hot water on the source side of the water source heat pump. The domestic water is sent to each water point through a variable frequency constant pressure pump for domestic water.

[0104] Preferably, by combining the heat exchange water tank with the indoor domestic water system, when indoor water is used in cooling mode, tap water will be replenished into the heat exchange water tank, and the replenished low-temperature tap water will exchange heat with the high-temperature water generated on the source side of the water source heat pump through the heat exchange coil in the water tank, thereby making full use of the indoor water, allowing the domestic water to drain away a part of the heat generated by the water source heat pump host while reducing the energy consumption of the air conditioner. At the same time, the high-temperature tap water after heat exchange will reduce the energy consumption of the water heater after being sent to the water heater. The heat exchange water tank can not only exchange heat for the host and domestic water, but also play a buffering and voltage stabilizing role for domestic water, thereby enhancing the stability of indoor domestic water.

[0105] Preferably, the auxiliary heating module includes a winter auxiliary heat source, an auxiliary heat source controller, a three-way valve and a temperature sensing probe; the winter auxiliary heat source is a gas furnace, an air source heat pump or a solar energy device, and the auxiliary heat source controller can switch the direction of the pipeline water flow during heating and cooling through two sets of three-way valves. The auxiliary heat source controller controls the start and stop of the auxiliary heat source through the water temperature sensed by the temperature sensing probe. When the water temperature in the water tank is lower than 15°C, the auxiliary heat source starts to heat the water in the water tank. When the water temperature in the water tank is higher than 30°C, the auxiliary heat source is shut down and stops heating the water in the water tank.

[0106] The auxiliary heating module works by:

[0107] S41: The temperature sensor monitors the water temperature in the water tank in real time and sends this data to the auxiliary heat source controller;

[0108] S42: Controller evaluation: The auxiliary heat source controller determines whether the current water temperature is within the set temperature range based on the water temperature data provided by the temperature sensor. The water temperature range is set to 15°C-30°C.

[0109] S43: If the water temperature in the water tank is lower than the minimum set temperature (15°C), the auxiliary heat source controller sends a command to start the winter auxiliary heat source, such as a gas furnace or a solar energy device, to start heating the water in the water tank;

[0110] S44: The controller simultaneously controls two sets of three-way valves to adjust the water flow direction to ensure that the heat energy provided by the auxiliary heat source can enter the system circulation;

[0111] S45: When the water temperature in the water tank reaches or exceeds the set high temperature threshold (30°C), the auxiliary heat source controller instructs the auxiliary heat source to stop heating;

[0112] S46: the three-way valve switches again, and when the auxiliary heat source needs to be closed, the controller ensures that the three-way valve is in a position to close the flow path of the auxiliary heat source;

[0113] S47: Repeat S41-S46 for cyclic judgment, the auxiliary heat source controller continues to receive information from the temperature sensor, and periodically evaluates whether to activate or stop the auxiliary heat source according to the change of water temperature.

[0114] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. Fully recycled water source heat pump central air conditioning system, including: The temperature generating module is used to deliver the generated high-temperature hot water into the room through the pipeline and connect to the heat exchange module; The heat exchange module is used to exchange heat with the high-temperature hot water connected to the heat exchange module through the heat exchange equipment, and send the hot water to the heat exchange module to further reduce the energy consumption of the air conditioner; The heat exchange module is used to transfer the high-temperature hot water introduced from the heat exchange module to a heat exchanger for further heat exchange, thereby further reducing the energy consumption of the air conditioner; The auxiliary refrigeration module is used to introduce the liquid in the return water pipe on the source side of the water source heat pump into the auxiliary refrigeration module through a pipeline, and control the inlet water temperature by spraying and cooling to assist refrigeration; The cooling module is used to send the low-temperature water exported from the auxiliary refrigeration module to the main unit through the pipeline, and send the chilled water taken by the main unit into the room to cool the room; Water supply module, used to deliver municipal tap water to various water use points indoors; The auxiliary heating module is used to perform auxiliary heating on the water source heat pump side using an auxiliary heat source in winter.

2. The fully recovered water source heat pump central air conditioning system according to claim 1 is characterized in that: The temperature generating module includes a water source heat pump host, a heat exchange water tank and a three-way valve. The water source heat pump host is used to send the return water after heat exchange with the indoor air back to the indoor fan disk for indoor cooling after heat exchange and cooling inside the host. The source side water after heat exchange is further transported to the heat exchange coil of the heat exchange water tank through pipelines and three-way valves. When the temperature generating module works, the following steps are included: S11: The return water after heat exchange with indoor air on the load side flows through the evaporator of the water source heat pump host, and after cooling, it is sent to the indoor fan coil to cool the room; S12: The source side cold water after cooling flows through the condenser of the water source heat pump host, and after heating, it is transported to the heat exchange coil in the heat exchange water tank through the three-way valve and pipeline; S13: When the high-temperature hot water passes through the heat exchange coil, the heat will be exchanged with the low-temperature water in the water tank, causing its temperature to rise. At the same time, the cooled hot water will continue to flow to keep the heat exchange going; S14: The high-temperature hot water is exchanged with the domestic water in the heat exchange water tank and then connected to the heat exchange module through a pipeline.

3. The fully recovered water source heat pump central air conditioning system according to claim 2 is characterized in that: The heat exchange module includes a heat exchange exhaust fan and a condensate heat exchanger. The high-temperature hot water is respectively connected to the heat exchange exhaust fan and the condensate heat exchanger after exchanging heat with the domestic water in the water tank in the heat exchange water tank. The heat exchange exhaust fan performs secondary heat exchange treatment on the hot water sent into the temperature generating module through the integrated heat exchange coil inside the exhaust fan. The heat exchange exhaust fan uses the waste heat energy in the exhaust process to reduce the temperature of the hot water. The hot water sent into the temperature generating module is subjected to secondary heat exchange treatment through the condensation heat exchange structure of the condensate heat exchanger. The condensate heat exchanger uses the low-temperature condensate generated during air conditioning to exchange heat with the hot water. The hot water after the secondary heat exchange is then sent to the heat exchange module through a pipeline.

4. The fully recovered water source heat pump central air conditioning system according to claim 3 is characterized in that: The heat exchange module includes a waterscape heat exchanger and a swimming pool bottom heat exchanger; the hot water after the secondary heat exchange is heat exchanged again through the waterscape heat exchanger and the swimming pool bottom heat exchanger; the swimming pool bottom heat exchanger exchanges heat between the water in the swimming pool bottom device and the water in the swimming pool, thereby raising the water temperature in the swimming pool again, and the water in the swimming pool bottom device is cooled after the heat exchange, thereby realizing energy recovery and reuse. At the same time, the swimming pool bottom heat exchanger can disperse the water evenly through the water circulation process, ensure uniform temperature distribution in the swimming pool, and improve the overall thermal energy utilization efficiency.

5. The fully recovered water source heat pump central air conditioning system according to claim 4 is characterized in that: The auxiliary refrigeration module includes a closed cooling tower, a water supply tank, a temperature sensor, a fan motor, a cooling water circulation pump and a cooling tower thermostat; the return water pipe on the source side of the water source heat pump enters the closed cooling tower through the pipeline, and a temperature sensor is installed on the cooling tower inlet pipe, which is linked with the fan motor and the cooling water circulation pump of the cooling tower. The fan motor and the cooling water circulation pump of the cooling tower are controlled by the cooling tower thermostat. When the inlet water temperature is higher than the set temperature, the cooling tower fan and the cooling water circulation pump are started, and the high-temperature water in the water pipe is sprayed to cool down, and the heat is taken away by the fan motor. When the inlet water temperature is lower than the set temperature, the cooling tower fan and the cooling water circulation pump are kept closed.

6. The fully recovered water source heat pump central air conditioning system according to claim 5 is characterized in that: The auxiliary cooling module works by: S21: Install a temperature probe on the water inlet pipe of the cooling tower and ensure that the probe is well connected to the controller of the cooling tower fan motor and the cooling water circulation pump; S22: Set a target temperature through the thermostat, and the target temperature is normally set to 30°C; S23: The thermostat receives the inlet water temperature data monitored by the temperature sensor in real time and compares it with the set target temperature; when the monitored inlet water temperature is higher than the set target temperature, it enters S24; when the monitored inlet water temperature is lower than the set target temperature, it enters S26; S24: When the monitored inlet water temperature is higher than the set target temperature, the thermostat sends a signal to start the fan motor and the cooling water circulation pump; S25: Start the fan motor to increase air circulation and make the cooling water circulation pump work at the same time, spray and dissipate the high-temperature water through the cooling tower, and exchange heat through direct contact between air and water to reduce the water temperature; S26: If the monitored inlet water temperature is lower than the set target temperature, the cooling tower thermostat will keep the cooling tower fan motor and cooling water circulation pump in the off state; S27: Repeat S23-S26. The system will continue to perform real-time monitoring and corresponding temperature control operations to ensure that the cooling tower can efficiently cool the water flowing through it.

7. The fully recovered water source heat pump central air conditioning system according to claim 6 is characterized in that: The cooling module includes a three-way valve, a water source circulation pump and an indoor fan coil unit; the low-temperature water coming out of the cooling tower is sent to the water source heat pump main unit through pipelines and three-way valves through the water source side circulation pump. The chilled water taken by the water source heat pump main unit circulates and exchanges heat with the indoor fan coil unit through pipelines to cool the room.

8. The fully recovered water source heat pump central air conditioning system according to claim 7 is characterized in that: The cooling module works by: S31: Low-temperature water cooled by the cooling tower flows through the pipeline and passes through a three-way valve that can be adjusted according to system requirements; S32: The circulating pump on the water source side delivers low-temperature water to the water source heat pump host to provide it with the necessary cooling water source; S33: heat exchange is performed inside the water source heat pump host, and the refrigerant absorbs the heat of the water to produce chilled water; S34: The produced chilled water is transported to the indoor fan coil unit; S35: The indoor fan coil transfers the indoor heat to the chilled water through the heat exchange between the air and the chilled water, thereby achieving the purpose of lowering the indoor temperature; S36: The water with increased temperature after heat exchange returns to the cooling tower for cooling again, completing a cycle; S37: Repeat S31-S36 to perform cyclic heat exchange.

9. The fully recovered water source heat pump central air conditioning system according to claim 8 is characterized in that: The water supply module includes a main water meter and a variable frequency constant pressure pump for domestic water; municipal tap water passes through the main water meter and enters the heat exchange water tank through a pipe, and is sent to the indoor domestic water points after heat exchange with the high-temperature hot water on the source side of the water source heat pump. The domestic water is sent to each water point through a variable frequency constant pressure pump for domestic water.

10. The fully recovered water source heat pump central air conditioning system according to claim 9, characterized in that: The auxiliary heating module includes a winter auxiliary heat source, an auxiliary heat source controller, a three-way valve and a temperature sensor; the winter auxiliary heat source is a gas furnace, an air source heat pump or a solar energy device. The auxiliary heat source controller can switch the direction of the pipe water flow during heating and cooling through two sets of three-way valves. The auxiliary heat source controller controls the start and stop of the auxiliary heat source through the water temperature sensed by the temperature sensor. When the water temperature in the water tank is lower than 15°C, the auxiliary heat source starts to heat the water in the water tank. When the water temperature in the water tank is higher than 30°C, the auxiliary heat source is shut down and stops heating the water in the water tank. The auxiliary heating module works by: S41: The temperature sensor monitors the water temperature in the water tank in real time and sends this data to the auxiliary heat source controller; S42: Controller evaluation: The auxiliary heat source controller determines whether the current water temperature is within the set temperature range based on the water temperature data provided by the temperature sensor. The water temperature range is set to 15°C-30°C. S43: If the water temperature in the water tank is lower than the minimum set temperature (15°C), the auxiliary heat source controller sends a command to start the winter auxiliary heat source, such as a gas furnace, an air source heat pump or a solar energy device, to start heating the water in the water tank; S44: The controller simultaneously controls two sets of three-way valves to adjust the water flow direction to ensure that the heat energy provided by the auxiliary heat source can enter the system circulation; S45: When the water temperature in the water tank reaches or exceeds the set high temperature threshold (30°C), the auxiliary heat source controller instructs the auxiliary heat source to stop heating; S46: the three-way valve switches again, and when the auxiliary heat source needs to be closed, the controller ensures that the three-way valve is in a position to close the flow path of the auxiliary heat source; S47: Repeat S41-S46 for cyclic judgment, the auxiliary heat source controller continues to receive information from the temperature sensor, and periodically evaluates whether to activate or stop the auxiliary heat source according to the change of water temperature.

Images