A heat pump system for condensate recovery

Abstract

A condensate water recycling heat pump system, comprising an outdoor unit, an indoor unit, a water supply pipeline and a return water pipeline, the outdoor unit comprising a compressor, a four-way reversing valve, a water fluorine heat exchanger, a fan, an outdoor water fluorine heat exchanger, a spraying device and a drain valve, the indoor unit comprising an indoor water supply pipeline, an indoor return water pipeline, a water spraying supply pipeline, a floor heating pipeline, an indoor vertical air disc, a water storage tank, a water level switch, a water spraying pump, a conversion device and a water replenishment electromagnetic valve, the conversion device being in communication with the spraying device; during refrigeration, the water spraying pump, the conversion device and the spraying device spray water to the outdoor water fluorine heat exchanger for cooling; the drain valve is arranged on the pipeline between the conversion device and the outdoor water fluorine heat exchanger; during water replenishment, the water spraying pump, the conversion device and the indoor return water pipeline are in communication; the outdoor water fluorine heat exchanger is in communication with the water supply pipeline and the return water pipeline. The condensate water is stored in the water storage tank, and during refrigeration, the water in the water storage tank cools the outdoor water fluorine heat exchanger through the spraying device; the system can also play a water replenishment role.

Description

Technical Field

[0001] This invention relates to a heat pump system. Background Technology

[0002] The existing technology, Chinese patent 201620053011.0, describes a floor radiant heating and cooling system, including an air source heat pump chiller, a buffer water tank, a fresh air system, a plate heat exchanger, a floor radiant system, terminal water pumps, and a radiant cooling pump. The air source heat pump chiller is connected to the buffer water tank; the outlet pipe of the air source heat pump chiller is branched off to the cooling fresh air system; the buffer water tank is connected to the terminal water pump and splits into two lines, one connecting to the floor heating system and the other to the plate heat exchanger. The other loop of the plate heat exchanger is connected in parallel to the floor heating system. This system solves the problem of condensation caused by low water temperature in the floor radiant cooling system by adding a plate heat exchanger, and uses an upward-blowing fresh air system to ensure cooling effect. The problem is that the condensate from the indoor fresh air system cannot be treated and can only be discharged. Summary of the Invention

[0003] The purpose of this invention is to provide a heat pump system for condensate recovery and utilization, which has the characteristic of making full use of condensate.

[0004] This invention is implemented as follows: a heat pump system for condensate water recovery and utilization, characterized in that it includes an outdoor unit, an indoor unit, a water supply pipeline, and a return water pipeline. The outdoor unit includes a compressor, a four-way reversing valve, a water-fluorine heat exchanger, a fan, an outdoor water-fluorine heat exchanger, a spray device, and a drain valve. The spray device is opposite to the outdoor heat exchanger, and the fan, the outdoor water-fluorine heat exchanger, and the spray device are arranged in sequence. The indoor unit includes an indoor water supply pipe, an indoor return pipe, a spray water supply pipe, several underfloor heating pipes, several indoor vertical fan coil units, a water storage tank, a water level switch, a spray pump, a switching device, and a water supply solenoid valve. Each indoor vertical fan coil unit has a water collection tray. The underfloor heating pipes and the indoor vertical fan coil unit constitute one indoor unit. The water level switch is located inside the water storage tank, and the water collection tray and water supply solenoid valve are connected to the water storage tank. The switching device is connected to the indoor return pipe, the spray water supply pipe, and the spray system. The spray pump is located on the spray water supply pipe, and the spray water supply pipe is connected to the water storage tank. The indoor water supply pipe and the indoor return pipe are connected to the indoor unit. The water-fluoride heat exchanger is connected to the indoor water supply and return pipes via supply and return water lines, and the conversion device is connected to the spray system. During cooling, the spray pump, conversion device, and spray system spray water onto the outdoor water-fluoride heat exchanger for cooling. A drain valve is located on the pipeline between the conversion device and the outdoor water-fluoride heat exchanger. During water replenishment, the spray pump, conversion device, and indoor return water pipe are connected. The outdoor water-fluoride heat exchanger is connected to the supply and return water lines.

[0005] The heat pump system for condensate recovery and utilization is characterized in that: the conversion device includes a first solenoid valve, a second solenoid valve, and a three-way pipe fitting. The branch pipe of the tee fitting is connected to the water pump, one end of the straight pipe of the tee fitting, the second solenoid valve and the sprinkler device are connected in sequence, and the other end of the straight pipe of the tee fitting, the first solenoid valve and the indoor return water pipe are connected.

[0006] The heat pump system for condensate recovery and utilization is characterized in that the conversion device is an electric two-position three-way valve.

[0007] The heat pump system for condensate recovery and utilization is characterized in that a water filter purifier is installed on the pipeline between the water receiving pan and the water storage tank.

[0008] The heat pump system for condensate recovery and utilization is characterized in that: the water storage tank is also equipped with a domestic water tap.

[0009] The heat pump system for condensate recovery and utilization is characterized in that the water level switch includes a low water level switch and a high water level switch.

[0010] This invention discloses a heat pump system for condensate recovery and utilization. Due to its structure, the condensate is stored in a water tank. During cooling, the water in the water tank is sprayed through a spray device to cool the outdoor water-fluorine heat exchanger; it can also serve as a water replenishment function. Attached Figure Description

[0011] Figure 1 This is the front view of the present invention.

[0012] Figure 2 This is a view of the indoor unit of the present invention.

[0013] Figure 3 This is a view of the outdoor unit of the present invention. Detailed Implementation

[0014] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0015] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0016] like Figure 1 As shown, a heat pump system for condensate recovery and utilization includes an outdoor unit 1, an indoor unit 2, a water supply pipe 3 and a return water pipe 4, and a circulating water pump 5 is installed on the return water pipe 4. like Figure 3 As shown, the outdoor unit 1 includes a compressor 10, a four-way reversing valve 11, a water-fluorine heat exchanger 12, a fan 13, an outdoor water-fluorine heat exchanger 14, a spray device 15, and a drain valve 16. The spray device 15 is opposite to the outdoor unit, and the fan 13, the outdoor water-fluorine heat exchanger 14, and the spray device 15 are arranged in sequence. The refrigerant circuits of the compressor 10, the four-way reversing valve 11, the water-fluorine heat exchanger 12, and the outdoor water-fluorine heat exchanger 14 are circulated. like Figure 2 As shown, the indoor unit 2 includes an indoor water supply pipe 211, an indoor return water pipe 212, a spray water supply pipe 213, three floor heating pipes 22, three indoor vertical fan coil units 23, a water storage tank 24, a water level switch, a spray pump 25, a switching device 26, and a water replenishment solenoid valve 27. The indoor vertical fan coil units 23 are equipped with a water receiving tray. The floor heating pipes 22 and the indoor vertical fan coil units 23 constitute an indoor unit. The water level switch is located inside the water storage tank 24. The water receiving tray and the water replenishment solenoid valve 27 are respectively connected to the water storage tank 24. The switching device 26 is connected to the indoor return water pipe 212, the spray water supply pipe 213, and the spray device 15. The spray pump 25 is located on the spray water supply pipe 213, and the spray water supply pipe 213 is connected to the water storage tank 24. The indoor water supply pipe 211 and the indoor return water pipe 212 are connected to the indoor unit. The water-fluoride heat exchanger 12 is connected to the indoor water supply pipe 211 and the indoor water return pipe 212 through the water supply pipe 3 and the return pipe 4, and the conversion device 26 is connected to the spray device 15. During cooling, the water spray pump 25, the conversion device 26 and the spray device 15 spray water to the outdoor water-fluoride heat exchanger 14 to cool it down. The drain valve 16 is located on the pipe between the conversion device 26 and the outdoor water-fluoride heat exchanger 14. During water replenishment, the water spray pump 25, the conversion device 26 and the indoor return pipe 212 are connected. The water circuit of the outdoor water-fluoride heat exchanger 14 is connected to the water supply pipe 3 and the return pipe 4.

[0017] The conversion device 26 includes a first solenoid valve 261, a second solenoid valve 262, and a three-way fitting. The branch pipe of the tee fitting is connected to the water pump 25. One end of the straight pipe of the tee fitting, the first solenoid valve 261 and the sprinkler device 15 are connected in sequence. The other end of the straight pipe of the tee fitting, the second solenoid valve 262 and the indoor return water pipe 212 are connected.

[0018] The water supply pipeline 3 is equipped with a riser, a low liquid level switch 31, a high liquid level switch 32, an automatic drain valve 33, and a pressure relief valve 34. The lower end of the riser is fixed to and connected to the water supply pipeline 3. The automatic drain valve 33 is located at the top of the riser. The low liquid level switch 31, the pressure relief valve 34, and the high liquid level switch 32 are arranged sequentially from bottom to top on the riser.

[0019] When the heat pump system is cooling: (i) the outdoor unit is working, the water circuit of the water-fluorine heat exchanger 12, the water supply pipe 3, the indoor unit, the return water pipe 4 and the water-fluorine heat exchanger 12 constitute a closed water circulation system; the underfloor heating pipe 22 radiates the space to cool down, and then the indoor vertical fan coil 23 performs heat exchange to cool the room. At the same time, the water temperature is controlled to dehumidify, effectively control the dew point to reduce indoor humidity, and avoid condensation on the floor. The indoor vertical fan coil 23 performs heat exchange and produces condensate which enters the water storage tank 24.

[0020] (ii) The first solenoid valve 261 is opened to conduct, and the second solenoid valve 262 is closed. The condensate in the water storage tank 24 is sent to the spray device 15 through the water spray pump 25. The spray device 15 sprays water onto the external heat exchanger 14 for cooling. When the water volume in the closed water circulation system decreases, the low liquid level switch 31 is triggered, the second solenoid valve 262 is opened, and the first solenoid valve 261 is closed. The condensate collected in the water storage tank 24 is injected into the return water pipe 4, thereby avoiding water shortage in the pipe and affecting the normal operation of the unit. When the water volume in the closed water circulation system reaches the set water volume, the high liquid level switch 32 is triggered, the first solenoid valve 261 is opened, and the second solenoid valve 262 is closed. The water supply to the pipe is completed, and the system switches to the outdoor water-fluorine heat exchanger 14 and the spray device 15 to provide dual cooling for the outdoor water-fluorine heat exchanger 14, reduce the condensing pressure and temperature, thereby reducing power and improving cooling efficiency. (iii) When the unit is in cooling operation and the circulating water pump starts, part of the cooling water in the return water pipe 3 flows through the water circuit of the outdoor water-fluorine heat exchanger 14 and then returns to the supply water pipe 4, thereby reducing the condensing pressure and temperature of the refrigerant system, reducing the unit's operating power, and improving the cooling energy efficiency. The above-mentioned dual cooling water reduces the high-pressure condensation pressure and temperature of the refrigerant system, reduces operating power, greatly improves refrigeration efficiency, and makes the unit more energy-efficient.

[0021] When the heat pump system is heating: (i) When heating is turned on, first open the drain valve 16 to drain the water in the spray pipe to prevent freezing and cracking of the pipe; the hot water from the water-fluorine heat exchanger 12 is sent to the indoor floor heating pipe 22 for space radiation heating through the circulating water pump 5, and then heat exchange is carried out through the indoor vertical fan coil 23 to heat the room. At the same time, when the circulating water pump 5 is started, part of the hot water in the return water pipe 4 is diverted through the water circuit of the outdoor water-fluorine heat exchanger 14, thereby increasing the evaporation pressure and temperature of the refrigerant system, preventing frost from forming on the fins, and never frosts or defrosts, greatly increasing the heating capacity and improving the heating efficiency; (ii) the condensate in the storage tank can also be used for domestic water. When the water level in the storage tank 24 is low, when the low water level switch 281 is triggered, the water replenishment solenoid valve 27 is opened to automatically replenish the water in the storage tank 24 from tap water, thereby ensuring the continuous, efficient and normal operation of the entire unit's refrigerant system and water system.

[0022] The present invention can also be implemented as follows: the conversion device 26 is an electric two-position three-way valve.

[0023] As a further improvement of the present invention: a water filter purifier is provided on the pipeline between the water receiving tray and the water storage tank 24.

[0024] The water storage tank 24 is also equipped with a domestic water tap 241.

[0025] The water level switch includes a low water level switch 281 and a high water level switch 282. This design enables automatic water replenishment to the water storage tank 24.

[0026] Although embodiments of the invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A heat pump system for condensate water recovery and utilization, characterized in that: Includes outdoor unit, indoor unit, water supply pipes and return pipes. The outdoor unit includes a compressor, a four-way reversing valve, a water-fluorine heat exchanger, a fan, an outdoor water-fluorine heat exchanger, a spray device, and a drain valve. The spray device is opposite to the outdoor water-fluorine heat exchanger, and the fan, the outdoor water-fluorine heat exchanger, and the spray device are arranged in sequence. The indoor unit includes an indoor water supply pipe, an indoor return pipe, a spray water supply pipe, several underfloor heating pipes, several indoor vertical fan coil units, a water storage tank, a water level switch, a spray pump, a switching device, and a water supply solenoid valve. Each indoor vertical fan coil unit has a water collection tray. The underfloor heating pipes and the indoor vertical fan coil unit constitute one indoor unit. The water level switch is located inside the water storage tank, and the water collection tray and water supply solenoid valve are connected to the water storage tank. The switching device is connected to the indoor return pipe, the spray water supply pipe, and the spray system. The spray pump is located on the spray water supply pipe, and the spray water supply pipe is connected to the water storage tank. The indoor water supply pipe and the indoor return pipe are connected to the indoor unit. The water-fluorine heat exchanger is connected to the indoor water supply pipe and indoor return pipe through the water supply pipe and return pipe, and the conversion device is connected to the spray device. During cooling, the water pump, conversion device and spray device spray water to the outdoor water-fluorine heat exchanger to cool it down. The drain valve is located on the pipeline between the conversion device and the outdoor water-fluorine heat exchanger. During water replenishment, the water pump, conversion device and indoor return pipe are connected. The outdoor water-fluorine heat exchanger is connected to the water supply pipe and return pipe.

2. A heat pump system for condensate recovery and utilization according to claim 1, characterized in that: The conversion device includes a first solenoid valve, a second solenoid valve, and a three-way fitting. The branch pipe of the tee fitting is connected to the water pump, one end of the straight pipe of the tee fitting, the second solenoid valve and the sprinkler device are connected in sequence, and the other end of the straight pipe of the tee fitting, the first solenoid valve and the indoor return water pipe are connected.

3. A heat pump system for condensate recovery and utilization according to claim 1, characterized in that: The conversion device is an electric two-position three-way valve.

4. A heat pump system for condensate recovery and utilization according to claim 1, characterized in that: A water filter purifier is installed on the pipeline between the water receiving tray and the water storage tank.

5. A heat pump system for condensate recovery and utilization according to claim 1, characterized in that: The water storage tank is also equipped with a tap for domestic water use.

6. A heat pump system for condensate recovery and utilization according to claim 1, characterized in that: The water level switch includes a low water level switch and a high water level switch.

Images