Hydrokinetic heat pump

Abstract

This utility model discloses a fluid kinetic energy heat pump, belonging to the technical field of heating and cooling equipment. It mainly includes a cold water tank and a hot water tank. The hot water tank is connected to an external circulation outlet pipe and an internal circulation return pipe. A large heat exchanger is installed between the cold water tank and / or the hot water tank and the internal circulation return pipe. The water inlet of the large heat exchanger is connected to the cold water tank and / or the hot water tank via an internal circulation pump. The water outlet of the large heat exchanger is connected to the internal circulation return pipe. The refrigerant circuit of the large heat exchanger is connected in parallel with one or more refrigerant heat exchange systems. The external circulation outlet pipe is connected to the hot water outlet pipe via an external circulation pump. This utility model uses multiple sets of refrigerant heat exchange systems connected in parallel through the refrigerant circuit of the large heat exchanger. Simultaneous operation allows for the absorption of heat from the air through refrigerant circulation, resulting in efficient heat exchange with the water circuit and improving the efficiency of cooling or heating functions.

Description

Technical Field

[0001] This utility model belongs to the technical field of heating and cooling equipment, and more specifically, it relates to a fluid kinetic energy heat pump. Background Technology

[0002] Fluid kinetic energy heat pumps, as highly efficient heating and cooling devices, are widely used in various fields. In winter, they recover low-temperature heat energy from the environment and use fluid kinetic energy to elevate it to high-temperature heat energy suitable for indoor heating. In summer, they can operate in reverse to achieve cooling, transferring indoor heat to the outside environment, thereby greatly improving energy efficiency and reducing energy consumption and production costs. In places requiring hot water supply, such as hotels, hospitals, and schools, fluid kinetic energy heat pumps can also efficiently heat low-temperature water sources to meet the demand for hot water, providing a stable and reliable hot water supply service.

[0003] Patent publication number "CN217978999U" discloses a parallel composite air source heat pump heating system, including a controller, an inlet pipe, an outlet pipe, a low-ambient-temperature air source CO2 heat pump unit for heating, and a conventional refrigerant low-ambient-temperature air source heat pump unit. A circulating water pump and an electric three-way regulating valve are installed on the inlet pipe, and a temperature detector is installed on the outlet pipe. Both the low-ambient-temperature air source CO2 heat pump unit and the conventional refrigerant low-ambient-temperature air source heat pump unit are connected to inlet and outlet branch pipes. One end of the electric three-way regulating valve is connected to the inlet pipe, and the other two ends are connected to the two inlet branch pipes respectively. Both outlet branch pipes are connected to the outlet pipe. The circulating water pump, the electric three-way regulating valve, and the temperature detector are all electrically connected to the controller. This system meets the needs of different supply water temperatures under different terminal forms and different ambient temperatures, while maximizing the energy efficiency and optimizing the economy of air source heat pump heating.

[0004] However, the above-mentioned heat pumps also have the following shortcomings: 1. They have limited adaptability to low-temperature environments. When the ambient temperature is below -20℃, their water supply temperature is difficult to meet the heating water supply temperature requirements of most terminal forms. Although the system is equipped with a low-ambient-temperature air-source CO2 heat pump unit for heating, in extremely cold regions, when the ambient temperature is below -30℃, it may be necessary to increase the number of such units significantly. This not only increases costs but may also be limited by factors such as site conditions, affecting the widespread application of the system in extremely cold regions. 2. The system includes a controller, inlet pipe, outlet pipe, two types of heat pump units, circulating water pump, electric three-way regulating valve, temperature detector, and other components. It also involves complex components such as frequency converter, water valve, heat spreader, and exhaust plug. This not only increases the difficulty of system design and installation but also significantly increases the cost of equipment procurement, installation, and subsequent maintenance.

[0005] To address the aforementioned technical problems, this application proposes a solution. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a fluid kinetic energy heat pump, which adopts a large heat exchanger with multiple sets of refrigerant heat exchange systems connected in parallel through the refrigerant circuit. When operating simultaneously, it can absorb heat from the air through refrigerant circulation and exchange heat with the water circuit efficiently, thereby improving the efficiency of cooling or heating functions.

[0007] The fluid kinetic energy heat pump includes a cold water tank and a hot water tank. The hot water tank is connected to an external circulation outlet pipe and an internal circulation return pipe. A large heat exchanger is installed between the cold water tank and / or the hot water tank and the internal circulation return pipe. The water inlet of the large heat exchanger is connected to the cold water tank and / or the hot water tank through an internal circulation water pump. The water outlet of the large heat exchanger is connected to the internal circulation return pipe. The refrigerant passage of the large heat exchanger is connected to one or more refrigerant heat exchange systems in parallel. The external circulation outlet pipe is connected to the hot water outlet pipe through an external circulation water pump.

[0008] Preferably, the hot water tank is fixedly installed on top of the cold water tank, and the hot water tank and the cold water tank are connected by a connecting pipe. A water flow control valve is provided on the connecting pipe. The connecting pipe is connected to the water inlet of the large heat exchanger through an internal circulation outlet pipe. An internal circulation water pump is installed on the internal circulation outlet pipe, and a valve is provided on the internal circulation outlet pipe.

[0009] Preferably, an electromagnetic heating mechanism is provided between the internal circulation outlet pipe and the water inlet of the large heat exchanger, and between the water outlet of the large heat exchanger and the internal circulation return pipe. A backup pipe is connected to the internal circulation outlet pipe, and a backup water pump and valve are provided on the backup pipe. Both ends of the backup water pump and the internal circulation water pump are connected to shock absorbers.

[0010] Preferably, the external circulation outlet pipe is equipped with an outlet control valve, the outlet end of the external circulation outlet pipe is connected to a main pipe, the main pipe is connected to multiple branch pipes, the external circulation water pump is installed on the branch pipes, and shock absorbers are connected to both ends of the external circulation water pump. Each branch pipe is equipped with a valve three on the side near the outlet end, and multiple branch pipes are connected to the main water circuit. The hot water outlet pipe is connected to the main water circuit.

[0011] Preferably, there are multiple hot water outlet pipes, and the outlets of the multiple hot water outlet pipes are connected to a common connecting pipe, which is connected to a main outlet pipe.

[0012] Preferably, each of the hot water outlet pipes is equipped with a cavitation generator.

[0013] Preferably, the refrigerant heat exchange system includes a compressor, a liquid storage tank, a gas-liquid separator, and an evaporator. The compressor inlet is connected to the gas-liquid separator, the compressor outlet is connected to the refrigerant inlet of the large heat exchanger, the refrigerant outlet of the large heat exchanger is connected to the liquid storage tank, the liquid storage tank is connected to the evaporator inlet through a throttle valve, and the evaporator outlet is connected to the gas-liquid separator.

[0014] Preferably, the large heat exchanger is a shell-and-tube heat exchanger, and a small heat exchanger is provided between the liquid storage tank and the evaporator. The small heat exchanger is a plate heat exchanger, and it is provided with a first circulating refrigerant path and a second circulating refrigerant path. The outlet of the liquid storage tank is connected to the inlet of the first circulating refrigerant path through passage one, and the outlet of the first circulating refrigerant path is connected to the inlet of the evaporator through throttle valve one. The outlet of the liquid storage tank is connected to the inlet of the second circulating refrigerant path through passage two, and a solenoid valve and a throttle valve two are sequentially provided on passage two. The outlet of the second circulating refrigerant path is connected to the compressor.

[0015] Preferably, it also includes a frame, a cold water tank is fixedly mounted on the frame, an internal circulating water pump and an external circulating water pump are mounted at the lower end of the frame, a support base is fixedly connected to the frame, a large heat exchanger is fixedly mounted near one side of the support base, and a compressor, a gas-liquid separator, a liquid storage tank and a small heat exchanger are sequentially mounted on the other side of the support base; a fixing plate is provided on the upper part of the support base, the fixing plate is fixedly connected to the frame, and the evaporator is fixedly mounted on the fixing plate.

[0016] Preferably, the lower end of the evaporator is inclined towards the middle of the frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In the water circulation system of this utility model, in the external circulation hot water delivery network, two of the three branch pipes of the external circulation water pump can be selected as main pumps and one as a standby pump. When the main pump fails, the standby pump is turned on to reduce the probability of downtime and ensure a long-term stable supply of hot water. The internal circulation outlet pipe is equipped with a standby pipeline and a standby water pump, which is activated when the internal circulation water pump fails to maintain the water circulation of the system.

[0019] 2. In the internal circulation water circuit, the electromagnetic heating mechanism provides auxiliary heating when water enters and flows out of the large heat exchanger. The water temperature can be adjusted according to the needs, and it can provide extra heat when the heat pump heating capacity is insufficient to meet the requirements of higher hot water temperature. Each hot water outlet pipe is equipped with a cavitation generator. Through multiple cavitation reactions inside the water flow, the hot water pipe is kept clean and heat transfer is efficient, which greatly improves the heat exchange performance of the equipment.

[0020] 3. The refrigerant circuit of the large heat exchanger is connected in parallel with multiple refrigerant heat exchange systems. When operating simultaneously, the refrigerant can absorb heat from the air through circulation and exchange heat with the water circuit efficiently, thereby improving the efficiency of the cooling or heating function. In addition, the large heat exchanger preferably uses a shell and tube heat exchanger, which has a larger heat exchange area and achieves more efficient heat exchange.

[0021] 4. A small heat exchanger is added to replenish gas and increase enthalpy. A small heat exchanger is installed between the liquid storage tank and the evaporator. It is started in extremely cold weather of -30°C. It replenishes gas and increases enthalpy for the compressor through the second circulation refrigerant circuit, so that the system can still work normally in extremely cold weather and expand the range of applicable environments of the system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the right side structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the left side structure of this utility model;

[0024] Figure 3 This is a partial structural schematic diagram of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the fluorine circuit heat exchange system Figure 1 ;

[0026] Figure 5 Schematic diagram of the structure of the fluorine circuit heat exchange system Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the external circulation loop of this utility model;

[0028] Figure 7 This is a schematic diagram of the present invention;

[0029] Figure 8 This is a schematic diagram of a fluorine circuit heat exchange system;

[0030] Figure 9 This is a schematic diagram of the internal structure of a cavitation generator.

[0031] In the diagram: 1. Frame; 101. Support base; 102. Fixing plate; 2. Water storage mechanism; 21. Hot water tank; 22. Cold water tank; 23. Connecting pipe; 231. Water flow control valve; 201. External circulation outlet pipe; 2011. Outlet control valve; 2012. Main pipe; 2013. Main water circuit; 202. Internal circulation return pipe; 203. Main outlet pipe; 204. Inlet pipe; 3. Circulation pump assembly; 301. Internal circulation pump; 302. External circulation pump; 303. Shock absorber; 304. Valve three; 305. Standby pump; 4. Cavitation generator. ; 401, Cavitation inlet pipe; 402, Cavitation shell; 403, Cavitation pipe; 404, First through hole; 405, Baffle; 406, Cavitation outlet pipe; 407, Second through hole; 408, Ring plate; 5, Electromagnetic heating mechanism; 6, Large heat exchanger; 7, Hot water outlet pipe; 8, Refrigerant heat exchange system; 801, Compressor; 802, Liquid storage tank; 803, Gas-liquid separator; 804, Small heat exchanger; 805, Evaporator; 806, Throttling valve II; 9, Internal circulation outlet pipe; 901, Valve I; 902, Valve II; 10, Water supply pipe. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Example 1:

[0035] like Figures 1 to 8 As shown, the fluid kinetic energy heat pump includes a frame 1, a cold water tank 22, and a hot water tank 21. The cold water tank 22 is fixedly mounted on the frame 1 and is connected to an inlet pipe 204 for receiving heating return water. The cold water tank 22 stores low-temperature water as the cold water source for the heat pump system. The hot water tank 21 stores heated hot water to provide hot water supply to users. The cold water tank 22 and the hot water tank 21 constitute the system's water storage mechanism 2, ensuring the system's continuous and stable operation. The hot water tank 21 is connected to an external circulation outlet pipe 201 and an internal circulation return pipe 202. The external circulation outlet pipe 201 is responsible for transporting the hot water in the hot water tank 21 to external user terminals, realizing the external supply of hot water. The internal circulation return pipe 202 is used to return the heated hot water circulated within the system, ensuring the continuity of heat transfer within the system.

[0036] Hot water tank 21 is fixedly installed on top of cold water tank 22. Hot water tank 21 and cold water tank 22 are connected by a connecting pipe 23. A water flow control valve 231 is installed on the connecting pipe 23. With hot water tank 21 placed on top of cold water tank 22, gravity facilitates the flow of hot water from hot water tank 21 to cold water tank 22. The water flow control valve 231 can precisely control the water flow between the two tanks according to actual needs, maintaining a stable water level in the tanks and ensuring the balance of system operation. A water supply pipe 10 is also connected to the connecting pipe 23 for replenishing water to the system.

[0037] A large heat exchanger 6 is provided between the circulating water after the cold water tank 22 or hot water tank 21 or the combination of cold water tank 22 and hot water tank 21 and the internal circulation return water pipe 202. The large heat exchanger 6 is preferably a shell and tube heat exchanger. The water inlet of the large heat exchanger 6 is connected to the above-mentioned circulating water through the internal circulation water pump 301, and the water outlet of the large heat exchanger 6 is connected to the internal circulation return water pipe 202. That is, the large heat exchanger 6 is used to introduce the circulating water for heat exchange and send the heated water back to the hot water tank 21 for storage.

[0038] The large heat exchanger 6 has multiple sets of refrigerant heat exchange systems 8 connected in parallel through its refrigerant channels. In this embodiment, four sets of refrigerant heat exchange systems 8 are preferably connected in parallel. By operating multiple sets of parallel refrigerant heat exchange systems 8 simultaneously, each set of refrigerant heat exchange systems 8 can absorb heat from the air through the circulation of refrigerant such as Freon within the refrigerant channels, and then exchange heat efficiently with the water to achieve cooling or heating functions. The external circulation outlet pipe 201 is connected to the hot water outlet pipe 7 through the external circulation water pump 302. The external circulation water pump 302 and the internal circulation water pump 301 constitute the circulation pump assembly 3. The circulation pump assembly 3 provides power to ensure that the water in the internal and external circulation systems can flow continuously, maintaining stable system operation.

[0039] In this embodiment, the connecting pipe 23 is connected to the water inlet of the large heat exchanger 6 via the internal circulation outlet pipe 9. The internal circulation outlet pipe 9 connects the connecting pipe 23 to the large heat exchanger 6, and the large heat exchanger 6 is connected to the internal circulation return pipe 202, forming a complete internal circulation water circuit. The internal circulation water pump 301 is installed on the internal circulation outlet pipe 9, and a valve 901 is provided on the internal circulation outlet pipe 9. The internal circulation water pump 301 provides power to the internal circulation water circuit, ensuring normal operation of the water circulation. The valve 901 can control the opening and closing of the internal circulation outlet pipe 9, facilitating the cutting off of water flow during system maintenance, fault repair, or adjustment of the operating mode, thus simplifying operation and maintenance.

[0040] An outlet control valve 2011 is provided on the external circulation outlet pipe 201. The outlet control valve 2011 controls the hot water flow and on / off state of the external circulation outlet pipe 201, and regulates the hot water supply to the outside. The outlet end of the external circulation outlet pipe 201 is connected to the main pipe 2012, and multiple branch pipes are connected to the main pipe 2012. In this embodiment, three branch pipes are preferred. The external circulation water pump 302 is installed on each branch pipe. The main pipe 2012 and the three branch pipes constitute an external circulation hot water delivery network, which facilitates the distribution of hot water. At the same time, the external circulation water pumps 302 on two of the three branch pipes can be selected as the main pumps, and the last one can be used as a standby pump. When in use, the standby pump is in a normally closed state and is only opened when the main pump fails. This makes maintenance more convenient without affecting the normal operation of the system, greatly reduces the probability of downtime, and ensures the long-term stable operation of the hot water supply system.

[0041] Both ends of the external circulation water pump 302 are connected to shock absorbers 303, which reduce vibration and noise during operation. Each branch pipe is equipped with a valve 304 near the outlet, allowing for independent control of each branch pipe. If a branch pipe malfunctions or requires adjustment, it can be shut off independently without affecting the normal operation of other branches. Multiple branch pipes are connected to the main water circuit 2013, and the hot water outlet pipe 7 is connected to the main water circuit 2013. The main water circuit 2013 collects hot water from each branch pipe and delivers it to the user end through the hot water outlet pipe 7.

[0042] In this embodiment, there are multiple hot water outlet pipes 7, and the outlets of the multiple hot water outlet pipes 7 are connected to a common converging pipe, which is connected to a main outlet pipe 203. The converging pipe collects the hot water from the multiple hot water outlet pipes 7 and outputs it uniformly through the main outlet pipe 203, which facilitates centralized management and distribution of hot water and improves the stability and efficiency of hot water supply.

[0043] like Figure 7 and Figure 8As shown, the refrigerant heat exchange system 8 includes a compressor 801, a liquid receiver 802, a gas-liquid separator 803, and an evaporator 805. The compressor 801 is filled with refrigerant, which is compressed into a high-temperature, high-pressure gas, providing power for the refrigerant circulation. The gas-liquid separator 803 separates the liquid from the refrigerant gas, ensuring that the refrigerant entering the compressor 801 is gaseous and preventing damage from liquid slugging. The liquid receiver 802 stores the refrigerant liquid, stabilizing the refrigerant flow. The evaporator 805 is a finned evaporator that absorbs external heat, causing the refrigerant liquid to evaporate into gas, achieving a cooling effect. The inlet of the compressor 801 is connected to the gas-liquid separator 803, the outlet of the compressor 801 is connected to the refrigerant inlet of the large heat exchanger 6, the refrigerant outlet of the large heat exchanger 6 is connected to the liquid receiver 802, the liquid receiver 802 is connected to the inlet of the evaporator 805 through a throttle valve, and the outlet of the evaporator 805 is connected to the gas-liquid separator 803. The throttling valve reduces the refrigerant pressure, allowing it to absorb heat and evaporate in the evaporator 805, forming a complete refrigeration cycle. It then exchanges heat with the large heat exchanger 6 to achieve the cooling or heating function of the heat pump system.

[0044] The large heat exchanger 6 is a shell-and-tube heat exchanger, which has a large heat exchange area and can achieve more efficient heat exchange. A small heat exchanger 804 is installed between the liquid receiver 802 and the evaporator 805. The small heat exchanger 804 is a plate heat exchanger. It starts in extremely cold weather (minus 30°C) and can replenish the compressor 801 to increase its enthalpy, allowing the system to operate normally even in extremely cold weather. The small heat exchanger 804 contains a first circulating refrigerant circuit and a second circulating refrigerant circuit. The outlet of the liquid receiver 802 is connected to the inlet of the first circulating refrigerant circuit through passage one, and the outlet of the first circulating refrigerant circuit is connected to the inlet of the evaporator 805 through throttle valve one. The outlet of the liquid receiver 802 is connected to the inlet of the second circulating refrigerant circuit through passage two, which is equipped with a solenoid valve and a second throttle valve 806. The outlet of the second circulating refrigerant circuit is connected to the compressor 801. The small heat exchanger 804 further optimizes the refrigerant circulation by pre-cooling or preheating the refrigerant through the first and second refrigerant circulation paths, thereby improving system energy efficiency. The solenoid valve and throttle valve 806 control the refrigerant flow and on / off state of the second refrigerant circulation path, allowing for flexible adjustment of the refrigerant circulation path and flow according to system operating conditions, thus optimizing system performance.

[0045] During installation, the cold water tank 22 is fixedly mounted on the frame 1, which provides structural support for the entire heat pump system, ensuring the stability of the installation positions of each component. The internal circulating water pump 301 and the external circulating water pump 302 are located at the lower end of the frame 1, which is more reasonable and facilitates maintenance and repair. A support base 101 is fixedly connected to the frame 1. The large heat exchanger 6 is fixedly mounted on one side of the support base 101. The compressor 801, gas-liquid separator 803, liquid storage tank 802, and small heat exchanger 804 are sequentially mounted on the other side of the support base 101. Each group of compressor 801, gas-liquid separator 803, liquid storage tank 802, and small heat exchanger 804 are arranged in a row, which makes the installation and layout of the refrigerant connection pipes more convenient. A fixing plate 102 is provided on the upper part of the support base 101. The fixing plate 102 is fixedly connected to the frame 1, and the evaporator 805 is fixedly mounted on the fixing plate 102. By arranging the components longitudinally, the structure of each part is more rational, ensuring the accurate relative positions between the components, thereby guaranteeing the stability and reliability of the system operation.

[0046] The lower end of the evaporator 805 is inclined towards the middle of the frame 1, which improves the installation stability and the heat exchange efficiency of the evaporator 805, thereby improving the performance of the entire heat pump system.

[0047] Example 2:

[0048] like Figure 9 As shown, in the fluid kinetic energy heat pump, each hot water outlet pipe 7 is equipped with a cavitation generator 4. The cavitation generator 4 includes a cylindrical cavitation shell 402, with annular plates 408 sealed and welded to both ends of the cavitation shell 402. The annular plates 408 serve to seal and block water flow. One end of the cavitation shell 402 is provided with a cavitation inlet pipe 401, which is sealed and fixedly connected to the corresponding annular plate 408. The other end of the cavitation shell 402 is provided with a cavitation outlet pipe 406, which extends into the interior of the cavitation shell 402, and the outer wall of the cavitation outlet pipe 406 is fixedly connected to the corresponding annular plate 408.

[0049] A baffle 405 is provided inside the cavitation shell 402. The baffle 405 is fixedly connected to the inner wall of the cavitation shell 402 and the cavitation outlet pipe 406, and there is a certain distance between the baffle 405 and the adjacent annular plate 408 to facilitate the cavitation reaction of the subsequent water flow. The baffle 405 has multiple second through holes 407 for water flow. The second through holes 407 restrict the water flow area, so that the water flow velocity increases and the pressure changes when passing through the baffle 405, creating conditions for the cavitation effect.

[0050] A cavitation pipe 403 is fixedly connected between the baffle 405 and the annular plate 408 at the water inlet end of the cavitation housing 402. A through hole matching the cavitation pipe 403 is provided in the middle of the annular plate 408 at the water inlet end. A first through hole 404 is provided on the cavitation pipe 403, and the diameter of the first through hole 404 is larger than the diameter of the second through hole 407. This change in diameter allows most of the water flow to pass through the first through hole 404 more easily, thereby intensifying the pressure and velocity changes of the water flow inside the cavitation generator 4.

[0051] In this embodiment, the diameters of the cavitation inlet pipe 401 and the cavitation outlet pipe 406 are larger than the diameter of the cavitation pipe 403, which can create a change in the cross-section of the water flow channel, making the water flow faster and the pressure lower when it enters the cavitation pipe 403, and making it easier to generate the cavitation effect.

[0052] Electromagnetic heating mechanisms 5 are installed between the internal circulation outlet pipe 9 and the water inlet of the large heat exchanger 6, and between the water outlet of the large heat exchanger 6 and the internal circulation return pipe 202. These electromagnetic heating mechanisms 5 are existing technology, and their principle is referenced in CN220471585U. The electromagnetic heating mechanisms 5 provide auxiliary heating to the water before it enters the large heat exchanger 6 and after it flows out of the large heat exchanger 6. The water temperature can be flexibly adjusted according to actual needs, providing additional heat to meet higher hot water temperature requirements when the heat pump system's heating capacity is insufficient.

[0053] A backup pipeline is connected to the internal circulation outlet pipe 9 of the electromagnetic heating mechanism 5. The backup pipeline is equipped with a backup water pump 305 and a valve 304. Both ends of the backup water pump 305 and the internal circulation water pump 301 are connected to shock absorbers 303. The backup pipeline is activated when the internal circulation water pump 301 fails. The backup water pump 305 maintains the system's water circulation, ensuring continuous system operation and improving system reliability and stability. The valve 304 controls the opening and closing of the backup pipeline. The shock absorbers 303 effectively reduce the vibration and noise generated during pump operation, protecting the pump and the entire system pipeline, extending equipment lifespan, and improving the working environment. Other aspects are the same as in Embodiment 1.

[0054] Example 3:

[0055] The fluid kinetic energy heat pump is connected to the main pipe 2012 via the connecting pipe 23 through valve 902, allowing the water in the water storage device 2 to be directly heated by the cavitation generator. Everything else is the same as in Embodiment 2.

[0056] Water circulation working principle:

[0057] After the system starts, the internal circulation water pump 301 begins to operate, driving the water in the water storage mechanism 2 to enter the large heat exchanger 6 through the connecting pipe 23 and the internal circulation outlet pipe 9. During this process, if it is necessary to further increase the water temperature, the electromagnetic heating mechanism 5 between the internal circulation outlet pipe 9 and the water inlet of the large heat exchanger 6 will preheat the cold water first.

[0058] The water entering the large heat exchanger 6 exchanges heat with the refrigerant in the refrigerant circuit. In heating mode, the refrigerant releases heat, and the water absorbs the heat, causing its temperature to rise; in cooling mode, the water releases heat, causing its temperature to drop. The water that has completed the heat exchange flows out of the water outlet of the large heat exchanger 6, is heated by another electromagnetic heating mechanism 5 (the water temperature can be adjusted again if necessary), and returns to the hot water tank 21 through the internal circulation return pipe 202, completing one internal circulation cycle.

[0059] Hot water in the hot water tank 21 can be transported via the external circulation outlet pipe 201, under the control of the outlet control valve 2011, through the main pipe 2012 and branch pipes, pressurized by the external circulation water pump 302, to the hot water outlet pipe 7, and finally supplied to external users through the main outlet pipe 203. During the hot water transportation process, the cavitation generator 4 on each hot water outlet pipe 7 generates a cavitation effect, ensuring the cleanliness of the hot water pipeline and efficient heat transfer. When the internal circulation water pump 301 fails, the backup water pump 305 on the backup pipeline starts to maintain normal water circulation.

[0060] Working principle of cavitation generator 4:

[0061] In operation, water flows into the cavitation pipe 403 through the cavitation inlet pipe 401, with only a small portion passing directly through the baffle 405 and exiting through the cavitation outlet pipe 406. Due to the small diameter of the upper second through hole 407 in the baffle 405, most of the water passes through the cavitation pipe 403 and collides with the inner wall of the cavitation shell 402, undergoing the first cavitation induction. A portion of this water flows through the baffle 405 and exits through the cavitation outlet pipe 406. Another portion of the water flows through the smaller-diameter second through hole 407 and collides with the corresponding ring plate 408. At this point, the flow velocity increases again, the pressure decreases further, and a cavitation reaction occurs again. Then, the water flow changes direction and passes through the baffle 405 again, colliding with other water flows for a third cavitation reaction. This cycle continues until the water flows through the baffle 405 and exits through the cavitation outlet pipe 406, thereby greatly improving the heat exchange performance of the equipment.

[0062] Fluorine circuit circulation working principle:

[0063] In the refrigerant heat exchange system 8, the compressor 801 compresses the low-temperature, low-pressure gaseous refrigerant drawn from the gas-liquid separator 803 into a high-temperature, high-pressure gas, which is then delivered to the refrigerant inlet of the large heat exchanger 6. Inside the large heat exchanger 6, the high-temperature, high-pressure refrigerant gas exchanges heat with water in the water circuit, condenses itself into a high-pressure liquid, and flows into the liquid storage tank 802 for storage.

[0064] In normal cooling or heating environments, the high-pressure refrigerant liquid in the receiver 802 is depressurized by the expansion valve and then enters the evaporator 805. In the evaporator 805, the low-pressure refrigerant liquid absorbs heat from the outside and evaporates into gaseous refrigerant. It then returns to the gas-liquid separator 803 for separation and then returns to the compressor 801 to complete a basic cycle.

[0065] In extremely cold weather, a portion of the high-pressure refrigerant liquid in the receiver 802 enters the first-cycle refrigerant circuit of the small heat exchanger 804 through passage 1. After being depressurized by the expansion valve 1, it enters the evaporator 805. In the evaporator 805, the low-pressure refrigerant liquid absorbs heat from the outside and evaporates into gas. It then returns to the gas-liquid separator 803 for separation and then returns to the compressor 801, completing one basic cycle.

[0066] Another portion of the high-pressure refrigerant liquid enters the second refrigerant circulation circuit of the small heat exchanger 804 through passage two. The solenoid valve and throttling valve 806 on passage two can adjust the refrigerant flow and on / off state according to the system operating conditions. In the second refrigerant circulation circuit, the refrigerant is depressurized after passing through throttling valve 806 and then returns directly to compressor 801, replenishing compressor 801 with gas and increasing its enthalpy, enabling it to operate normally at -30°C. Through the coordinated work of the two circulation paths, the refrigerant circulation process is optimized, and the overall energy efficiency of the system is improved.

[0067] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fluid kinetic energy heat pump, comprising a cold water tank (22) and a hot water tank (21), wherein the hot water tank (21) is connected to an external circulation outlet pipe (201) and an internal circulation return pipe (202), characterized in that: A large heat exchanger (6) is provided between the cold water tank (22) and / or the hot water tank (21) and the internal circulation return water pipe (202). The water inlet of the large heat exchanger (6) is connected to the cold water tank (22) and / or the hot water tank (21) through the internal circulation water pump (301). The water outlet of the large heat exchanger (6) is connected to the internal circulation return water pipe (202). The fluorine passage of the large heat exchanger (6) is connected to one or more fluorine heat exchange systems (8). The external circulation outlet pipe (201) is connected to the hot water outlet pipe (7) through the external circulation water pump (302).

2. The fluid kinetic energy heat pump according to claim 1, characterized in that: The hot water tank (21) is fixedly installed on the top of the cold water tank (22). The hot water tank (21) and the cold water tank (22) are connected by a connecting pipe (23). A water flow control valve (231) is provided on the connecting pipe (23). The connecting pipe (23) is connected to the water inlet of the large heat exchanger (6) through the internal circulation outlet pipe (9). The internal circulation water pump (301) is installed on the internal circulation outlet pipe (9), and a valve (901) is provided on the internal circulation outlet pipe (9).

3. The fluid kinetic energy heat pump according to claim 2, characterized in that: Electromagnetic heating mechanisms (5) are provided between the water inlet of the internal circulation outlet pipe (9) and the water outlet of the large heat exchanger (6), and between the water outlet of the large heat exchanger (6) and the internal circulation return pipe (202). A spare pipeline is connected to the internal circulation outlet pipe (9). A spare water pump (305) and valve three (304) are provided on the spare pipeline. Shock absorbers (303) are connected to both ends of the spare water pump (305) and the internal circulation water pump (301).

4. The fluid kinetic energy heat pump according to claim 1, characterized in that: The external circulation outlet pipe (201) is equipped with an outlet control valve (2011). The outlet end of the external circulation outlet pipe (201) is connected to the main pipe (2012). The main pipe (2012) is connected to multiple branch pipes. The external circulation water pump (302) is installed on the branch pipes, and shock absorbers (303) are connected to both ends of the external circulation water pump (302). Each branch pipe is equipped with a valve three (304) on the side near the outlet end. Multiple branch pipes are connected to the main water circuit (2013). The hot water outlet pipe (7) is connected to the main water circuit (2013).

5. The fluid kinetic energy heat pump according to claim 4, characterized in that: There are multiple hot water outlet pipes (7), and the outlets of multiple hot water outlet pipes (7) are connected to a common converging pipe, which is connected to a main outlet pipe (203).

6. The fluid kinetic energy heat pump according to claim 5, characterized in that: Each of the hot water outlet pipes (7) is equipped with a cavitation generator (4).

7. The fluid kinetic energy heat pump according to any one of claims 1 to 6, characterized in that: The fluorine heat exchange system (8) includes a compressor (801), a liquid storage tank (802), a gas-liquid separator (803), and an evaporator (805). The air inlet of the compressor (801) is connected to the gas-liquid separator (803), the air outlet of the compressor (801) is connected to the fluorine inlet of the large heat exchanger (6), the fluorine outlet of the large heat exchanger (6) is connected to the liquid storage tank (802), the liquid storage tank (802) is connected to the air inlet of the evaporator (805) through a throttle valve, and the air outlet of the evaporator (805) is connected to the gas-liquid separator (803).

8. The fluid kinetic energy heat pump according to claim 7, characterized in that: The large heat exchanger (6) is a shell and tube heat exchanger. A small heat exchanger (804) is provided between the liquid storage tank (802) and the evaporator (805). The small heat exchanger (804) is a plate heat exchanger. The small heat exchanger (804) is provided with a first circulating refrigerant path and a second circulating refrigerant path. The outlet of the liquid storage tank (802) is connected to the inlet of the first circulating refrigerant path through passage one. The outlet of the first circulating refrigerant path is connected to the inlet of the evaporator (805) through throttle valve one. The outlet of the liquid storage tank (802) is connected to the inlet of the second circulating refrigerant path through passage two. A solenoid valve and throttle valve two (806) are provided in sequence on passage two. The outlet of the second circulating refrigerant path is connected to the compressor (801).

9. The fluid kinetic energy heat pump according to claim 8, characterized in that: It also includes a frame (1), a cold water tank (22) fixedly installed on the frame (1), an internal circulating water pump (301) and an external circulating water pump (302) installed at the lower end of the frame (1), a support base (101) fixedly connected on the frame (1), a large heat exchanger (6) fixedly installed on the support base (101) near one side, a compressor (801), a gas-liquid separator (803), a liquid storage tank (802) and a small heat exchanger (804) sequentially installed on the other side of the support base (101); a fixing plate (102) is provided on the upper part of the support base (101), the fixing plate (102) is fixedly connected to the frame (1), and an evaporator (805) is fixedly installed on the fixing plate (102).

10. The fluid kinetic energy heat pump according to claim 9, characterized in that: The lower end of the evaporator (805) is inclined toward the middle of the frame (1).

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