Water source heat pump hot water system utilizing waste heat and terrestrial heat

Abstract

The invention discloses a water source heat pump water heating system utilizing waste heat and terrestrial heat, which comprises a heat preservation storage tank, a waste heat water heating system utilizing flue gas waste heat to heat water is arranged on one side of the heat preservation storage tank, and a heat pump water heating system utilizing electric water heating is arranged on one side of the waste heat water heating system. And a geothermal water heating system for heating water by utilizing geothermal heat is arranged on one side of the heat preservation storage tank. Waste heat hot water, terrestrial heat hot water and traditional heat pump hot water can be connected together to form an efficient hot water system, meanwhile, the terrestrial heat hot water system and the heat pump hot water system are not simply standby for each other and can assist the heat pump hot water system to work, and in the subzero high-humidity environment in winter, the terrestrial heat hot water system and the heat pump hot water system can be recycled. The heat pump hot water system can be defrosted, and the temperature of water in the heat preservation storage tank is not affected, so that the using effect of the whole system can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hot water systems, and in particular to a water source heat pump hot water system utilizing waste heat and geothermal heat. Background Art

[0002] The technology of using various industrial or mechanical waste heat to produce hot water is very mature in the existing technology. Waste heat hot water refers to using the waste heat generated in the production process to heat water to a certain temperature. This hot water can be used in many aspects, such as heating, warming domestic water, etc., which can effectively improve energy utilization efficiency and achieve energy conservation and emission reduction.

[0003] Geothermal hot water uses thermal energy deep underground to heat water for heating and warming lives. Currently, the existing technology integrates ground source heat pumps and air source heat pumps to form a heating system, but they are limited to the parallel use of heat sources, making the two systems backup for each other and unable to assist each other. At the same time, there is a demand for waste heat recovery in some usage environments. The existing technology lacks a heating system that links ground source heat pumps, air source heat pumps, and waste heat systems. Therefore, a water source heat pump hot water system that utilizes waste heat and geothermal heat is needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a water source heat pump hot water system utilizing waste heat and geothermal energy to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a water source heat pump hot water system utilizing waste heat and geothermal heat, comprising an insulated storage tank, a waste heat hot water system utilizing flue gas waste heat to produce hot water is disposed on one side of the insulated storage tank, a heat pump hot water system with electric hot water is disposed on one side of the waste heat hot water system, and a geothermal hot water system utilizing geothermal heat to produce hot water is disposed on one side of the insulated storage tank.

[0006] Preferably, the waste heat hot water system includes a flue, a smoke inlet pipe, a smoke return pipe, a guide bin, and a first heat exchange tube. A flue is arranged on one side of the surface of the thermal insulation storage tank, a smoke inlet pipe is fixedly arranged on the outer surface of the lower end of the flue, a smoke return pipe is fixedly arranged on the outer surface of the upper end of the flue, guide bins are fixedly arranged at the lower and upper ends of the interior of the thermal insulation storage tank, a first heat exchange tube is fixedly arranged between the guide bins, the smoke inlet pipe is communicated with the interior of the lower guide bin, and the smoke return pipe is communicated with the interior of the upper guide bin.

[0007] Preferably, the heat pump hot water system includes an air source heat pump, an evaporator, a heat pump water inlet pipe, a heat pump return pipe, and a protective net. The air source heat pump is arranged on one side of the heat preservation storage tank, the evaporator is fixedly arranged on one side inside the air source heat pump, a heat pump water inlet pipe is fixedly arranged between the lower end of the evaporator and the heat preservation storage tank, a heat pump return pipe is fixedly arranged between the upper end of the evaporator and the heat preservation storage tank, and a protective net is fixedly arranged on the outside of the evaporator of the air source heat pump.

[0008] Preferably, the geothermal hot water system includes a buried pipe, a heat-conducting pipe, a second heat exchange pipe, a heat-conducting fin plate, a first electric push rod, a piston, a geothermal water inlet pipe, a geothermal water return pipe, a first one-way valve, and a second one-way valve. The lower end of the heat-insulating storage tank is provided with a buried pipe, the lower end of the buried pipe is fixedly provided with a heat-conducting pipe, the interior of the heat-conducting pipe is provided with a thermosensitive liquid, the upper end of the buried pipe is fixedly provided with a second heat exchange pipe, a plurality of heat-conducting fin plates are evenly fixedly provided on the lower end of the outer surface of the second heat exchange pipe, the upper end of the second heat exchange pipe is fixedly provided with a first electric push rod, the upper end of the second heat exchange pipe is movably engaged with a piston, the movable end of the first electric push rod is fixedly connected to the piston, a geothermal water inlet pipe is fixedly provided on one side of the second heat exchange pipe, a geothermal water return pipe is provided on the side of the second heat exchange pipe away from the geothermal water inlet pipe, a first one-way valve is provided between the geothermal water inlet pipe and the second heat exchange pipe, and a second one-way valve is provided between the geothermal water return pipe and the second heat exchange pipe.

[0009] Preferably, the first one-way valve is connected from the geothermal water inlet pipe to the inside of the second heat exchange pipe, and the second one-way valve is connected from the inside of the second heat exchange pipe to the inside of the geothermal water return pipe.

[0010] Preferably, a flow control mechanism for controlling the flow direction of water is provided at the upper ends of the geothermal water inlet pipe and the geothermal water return pipe, and the flow control mechanism includes a distributor, a cavity, a movable rod, a sealing plug, a second electric push rod, a first water inlet distribution pipe, a second water inlet distribution pipe, a first water return distribution pipe, and a second water return distribution pipe; a distributor is fixedly provided at the upper ends of the geothermal water inlet pipe and the geothermal water return pipe, cavities are opened on both sides of the distributor, the geothermal water inlet pipe and the geothermal water return pipe are respectively communicated with the inside of the cavity, a movable rod is movably interspersed in the middle of the inner side of the distributor, and a sealing plug is fixedly provided on the outer surface of the movable rod. A sealing plug, the sealing plug is snap-fitted inside the cavity, four sealing plugs are provided, and are symmetrically arranged in groups of two on both sides of the movable rod, a second electric push rod is fixedly provided on one side of the distributor surface, and the movable end of the second electric push rod is fixedly connected to the movable rod, a first water inlet distribution pipe is fixedly provided on the upper end of the right cavity of the distributor surface, a second water inlet distribution pipe is fixedly provided on the distributor surface on one side of the first water inlet distribution pipe, a first return water distribution pipe is fixedly provided on the distributor surface on the upper end of the left cavity, and a second return water distribution pipe is fixedly provided on the distributor surface on one side of the first return water distribution pipe.

[0011] Preferably, the first water inlet distribution pipe and the first water return distribution pipe are connected to the interior of the heat preservation storage tank; the second water inlet distribution pipe and the second water return distribution pipe are connected to the interior of the protective net, and the interior of the protective net is hollow.

[0012] Preferably, a draw plate is movably interspersed in the middle of the flue, and third electric push rods are fixedly arranged on both sides of the flue surface, and the movable end of the third electric push rod is fixedly connected to the draw plate.

[0013] Preferably, a cold water replenishment pipe is fixedly provided on one side of the upper end of the thermal insulation storage tank, and a warm water outlet pipe is fixedly provided on one side of the lower end of the surface of the thermal insulation storage tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention is connected with three hot water systems, which can serve as backup for each other. The waste heat hot water system and the geothermal hot water system are preferably used for hot water. When the water demand increases greatly and the above hot water systems cannot meet the demand, the heat pump hot water system can be used. This can minimize electricity consumption and save energy and protect the environment.

[0016] 2. The heat pump hot water system and the geothermal hot water system of the present invention are no longer simply interconnected as backup for each other, but can utilize a stable heat source to assist the heat pump hot water system in working. In winter, the temperature is low and the humidity is high. When the temperature is lower than the dew point, the evaporator of the heat pump hot water system is prone to frost. The present invention can utilize the hot water in the geothermal hot water system to directly help the air source heat pump defrost without affecting the water temperature inside the insulation storage tank, so as to assist the heat pump hot water system in working; this can significantly improve the operating effect of the system in winter.

[0017] 3. The present invention utilizes phase change heat transfer for the geothermal hot water system, so that the thermosensitive liquid inside the heat pipe absorbs the underground heat source and then evaporates. After evaporation, the density of the evaporated gas is less than that of the air and rises under the action of buoyancy, thereby automatically making up for the depth of the buried pipe, and there is no need to lay a water supply pipe. The evaporated gas automatically rises and contacts the second heat exchange pipe and the heat conduction fin plate, transferring the heat energy to the water source in the second heat exchange pipe for condensation, and then condenses into liquid droplets and flows back into the heat conduction pipe like rain; in this way, most of the pipelines can be solved; while facilitating the laying of pipelines, it can also avoid the faster heat dissipation of water flow caused by longer pipelines.

[0018] 4. For the geothermal hot water system, the present invention utilizes compression and extrusion to pump water. This pumping method is convenient for water flow control. The water will flow when you want it to flow and can be stopped immediately when you want it to stop, so as to provide sufficient heat exchange time for the water source in the second heat exchange. At the same time, the pumping pressure is large because the piston directly squeezes downward to pump, and it no longer relies on air pressure to pump the liquid, nor does it need to use a multi-stage booster pump. Even if the buried pipe is buried deep underground, the water can be pumped up. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention;

[0020] Figure 2 A side view of a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention Figure 1 ;

[0021] Figure 3 A side view of a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention Figure 2 ;

[0022] Figure 4 A cross-sectional view of a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention;

[0023] Figure 5 The present invention is a water source heat pump hot water system using waste heat and ground heat Figure 4 A front view of

[0024] Figure 6 This is an overall structural view of a heat pump hot water system in a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention;

[0025] Figure 7 This is a view of the internal structure of a heat preservation storage tank in a water source heat pump hot water system utilizing waste heat and ground heat according to the present invention;

[0026] Figure 8 This is a view of the internal structure of a buried pipe in a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention;

[0027] Fig. 9 This is an overall structural view of the second heat exchange tube in a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention;

[0028] Fig.10 This is a view of the internal structure of a flue in a water source heat pump hot water system utilizing waste heat and ground heat according to the present invention;

[0029] Fig.11 This is a comparison diagram of the distribution conditions of the distributors in a water source heat pump hot water system utilizing waste heat and geothermal heat according to the present invention.

[0030] In the figure: 1. Insulated storage tank;

[0031] 2. Waste heat hot water system; 201. Flue; 202. Smoke inlet pipe; 203. Smoke return pipe; 204. Diversion chamber; 205. First heat exchange tube; 206. Drawer plate; 207. Third electric push rod;

[0032] 3. Heat pump hot water system; 301. Air source heat pump; 302. Evaporator; 303. Heat pump water inlet pipe; 304. Heat pump water return pipe; 305. Protective net;

[0033] 4. Geothermal hot water system; 401. underground pipe; 402. heat transfer pipe; 403. second heat exchange pipe; 404. heat transfer fin plate; 405. first electric push rod; 406. piston; 407. geothermal water inlet pipe; 408. geothermal water return pipe; 409. first one-way valve; 410. second one-way valve;

[0034] 5. Flow direction control mechanism; 501. distributor; 502. cavity; 503. movable rod; 504. sealing plug; 505. first water inlet distribution pipe; 506. second water inlet distribution pipe; 507. first water return distribution pipe; 508. second water return distribution pipe; 509. second electric push rod;

[0035] 6. Cold water supply pipe; 7. Warm water outlet pipe. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-11 The present invention provides a technical solution: a water source heat pump hot water system 3 utilizing waste heat and geothermal energy, comprising an insulated storage tank 1, a waste heat hot water system 2 utilizing flue gas waste heat to produce hot water is disposed on one side of the insulated storage tank 1, a heat pump hot water system 3 utilizing electric hot water is disposed on one side of the waste heat hot water system 2, and a geothermal hot water system 4 utilizing geothermal energy to produce hot water is disposed on one side of the insulated storage tank 1.

[0038] The waste heat hot water system 2 includes a flue 201, a smoke inlet pipe 202, a smoke return pipe 203, a guide bin 204, and a first heat exchange pipe 205. The flue 201 is arranged on one side of the surface of the heat preservation storage tank 1, and the smoke inlet pipe 202 is fixedly arranged on the outer surface of the lower end of the flue 201, and the smoke return pipe 203 is fixedly arranged on the outer surface of the upper end of the flue 201. The guide bins 204 are fixedly arranged at the lower end and the lower end of the heat preservation storage tank 1, and the first heat exchange pipe 205 is fixedly arranged between the guide bins 204. The smoke inlet pipe 202 and the interior of the lower guide bin 204 are mutually conductive, and the smoke return pipe 203 and the interior of the upper guide bin 204 are mutually conductive; through the waste heat hot water system 2, in the use environment where hot smoke is discharged, the hot smoke can be directly guided through the inner middle part of the heat preservation storage tank 1; in this way, the hot smoke is heat-exchanged with the interior of the heat preservation storage tank 1; thereby, the function of waste heat heating can be achieved;

[0039] The heat pump hot water system 3 includes an air source heat pump 301, an evaporator 302, a heat pump water inlet pipe 303, a heat pump water return pipe 304, and a protective net 305. The air source heat pump 301 is arranged on one side of the heat preservation storage tank 1, and the evaporator 302 is fixedly arranged on one side of the air source heat pump 301. The heat pump water inlet pipe 303 is fixedly arranged between the lower end of the evaporator 302 and the heat preservation storage tank 1, and the heat pump water return pipe 304 is fixedly arranged between the upper end of the evaporator 302 and the heat preservation storage tank 1. The air source heat pump 301 is fixedly provided with a protective net 305 on the outside of the evaporator 302; The superheat pump hot water system 3 can generate heat using electricity; its principle is that the air source heat pump 301 continuously pumps air to flow through the evaporator 302, and the refrigerant expands and evaporates inside the evaporator 302, and the evaporation absorbs heat energy from the air, and then the refrigerant enters the condenser to condense and release heat, and contacts with the water source pumped in the heat pump water inlet pipe 303 for heat exchange, and the water source after heat exchange enters the heat preservation storage tank 1 through the heat pump return pipe 304 for storage, and the water inside the heat preservation storage tank 1 can be gradually heated by continuous circulation in this way. The above-mentioned hot water principle is a mature technology in the prior art, so this application document will not elaborate on it in detail;

[0040] The geothermal hot water system 4 includes a buried pipe 401, a heat-conducting pipe 402, a second heat exchange pipe 403, a heat-conducting fin plate 404, a first electric push rod 405, a piston 406, a geothermal water inlet pipe 407, a geothermal water return pipe 408, a first non-return valve 409, and a second non-return valve 410. The lower end of the heat-insulating storage tank 1 is provided with a buried pipe 401, the lower end of the buried pipe 401 is fixedly provided with a heat-conducting pipe 402, the heat-conducting pipe 402 is provided with a thermosensitive liquid, the upper end of the buried pipe 401 is fixedly provided with a second heat exchange pipe 403, the lower end of the outer surface of the second heat exchange pipe 403 is evenly fixedly provided with a plurality of heat-conducting fin plates 404, the buried pipe 401 is provided with a plurality of heat-conducting fin plates 404, and the second heat exchange pipe 403 is provided with a plurality of heat-conducting fin plates 404. 03, a first electric push rod 405 is fixedly provided at the upper end, a piston 406 is movably engaged with the inner upper end of the second heat exchange tube 403, a movable end of the first electric push rod 405 is fixedly connected to the piston 406, a geothermal water inlet pipe 407 is fixedly provided on one side of the second heat exchange tube 403, a geothermal water return pipe 408 is provided on the side of the second heat exchange tube 403 away from the geothermal water inlet pipe 407, a first non-return valve 409 is provided between the geothermal water inlet pipe 407 and the second heat exchange tube 403, and a second non-return valve 410 is provided between the geothermal water return pipe 408 and the second heat exchange tube 403; geothermal heat energy can be drawn through the geothermal hot water system 4 to heat the water source in the heat preservation storage tank 1;

[0041] The geothermal hot water system 4 in the present invention is different from the traditional geothermal hot water system 4. The present invention adopts phase change heat transfer. Since the depth of the buried pipe 401 of geothermal hot water is generally tens of meters or even hundreds of meters, if the pump body is used to circulate water for heat exchange, the cost is high and the pipeline is troublesome to lay. After the water source is heat exchanged, the heat in the long pipe of the hot water is dissipated quickly.

[0042] The present application utilizes phase change heat transfer to make the thermosensitive liquid inside the heat pipe 402 evaporate after absorbing the underground heat source. After evaporation, the density of the evaporated gas is less than that of the air and rises under the action of buoyancy, thereby automatically making up for the depth of the buried pipe 401, and there is no need to lay a water supply pipeline. The evaporated gas automatically rises and contacts the second heat exchange pipe 403 and the heat conduction fin plate 404, transferring the heat energy to the water source in the second heat exchange pipe 403 for condensation, and then condenses into liquid droplets and flows back into the heat conduction pipe 402 like rain. In this way, most of the pipelines can be solved. While facilitating the laying of pipelines, it can also avoid the faster heat dissipation of water flow caused by longer pipelines. At the same time, the device uses underground heat energy for heat exchange, does not pollute groundwater, and does not use groundwater, so that heat is taken without water.

[0043] It should be noted that the thermosensitive liquid of the local hot water system 4 can be the following liquids: ethanol has an evaporation temperature of 78°, and ethyl formate has an evaporation temperature of 54°. The specific liquid selected can be used according to the geothermal energy obtained by the buried depth of the heat pipe 402;

[0044] The first one-way valve 409 is connected from the geothermal water inlet pipe 407 to the inside of the second heat exchange pipe 403, and the second one-way valve 410 is connected from the inside of the second heat exchange pipe 403 to the inside of the geothermal water return pipe 408; the flow direction of the water source can be controlled by the first one-way valve 409 and the second one-way valve 410 to cooperate with the water source pumping method of this system. The water source pumping method of this system is piston 406 extrusion pumping. The first electric push rod 405 is extended to push the piston 406 downward, and the water source that has completed heat exchange in the second heat exchange pipe 403 can be squeezed downward. At this time, due to the flow direction control of the first one-way valve 409 and the second one-way valve 410, the hot water squeezed out of the second heat exchange tube 403 can only flow from the second one-way valve 410 to the geothermal return water pipe 408; correspondingly, the second electric push rod 509 is shortened to move the piston 406 upward, and at this time, the negative pressure in the second heat exchange tube 403, the water in the geothermal water inlet pipe 407 squeezes the first one-way valve 409 under the action of gravity water pressure, so that the first one-way valve 409 is turned on, so that the water flows into the second heat exchange tube 403 to wait for heat exchange with the geothermal;

[0045] The advantage of this pumping method is that the water flow control is convenient. The water flow can flow when it is desired, and can be stopped immediately when it is desired, so as to provide the water source in the second heat exchange with sufficient heat exchange time. At the same time, the pumping pressure is high. Since the piston 406 directly squeezes downward to pump, it no longer relies on air pressure to pump the liquid, and there is no need to use a multi-stage booster pump. Even if the buried pipe 401 is buried deep underground, the water can be pumped up.

[0046] The upper ends of the geothermal water inlet pipe 407 and the geothermal water return pipe 408 are provided with a flow direction control mechanism 5 for controlling the flow direction of water, and the flow direction control mechanism 5 includes a distributor 501, a cavity 502, a movable rod 503, a sealing plug 504, a second electric push rod 509, a first water inlet distribution pipe 505, a second water inlet distribution pipe 506, a first return water distribution pipe 507, and a second return water distribution pipe 508; the upper ends of the geothermal water inlet pipe 407 and the geothermal water return pipe 408 are fixedly provided with a distributor 501, both sides of the distributor 501 are provided with a cavity 502, the geothermal water inlet pipe 407 and the geothermal water return pipe 408 are respectively connected with the inside of the cavity 502, the middle part of the inner side of the distributor 501 is movably interspersed with a movable rod 503, and the outer surface of the movable rod 503 is fixedly provided with a sealing plug. A sealing plug 504, wherein the sealing plug 504 is clamped and arranged inside the cavity 502, and there are four sealing plugs 504, and two of them are symmetrically arranged on both sides of the movable rod 503. A second electric push rod 509 is fixedly arranged on one side of the surface of the distributor 501, and the movable end of the second electric push rod 509 is fixedly connected to the movable rod 503. A first water inlet distribution pipe 505 is fixedly arranged on the surface of the distributor 501 at the upper end of the right cavity 502, and a second water inlet distribution pipe 506 is fixedly arranged on the surface of the distributor 501 at one side of the first water inlet distribution pipe 505. A first return water distribution pipe 507 is fixedly arranged on the surface of the distributor 501 at the upper end of the left cavity 502, and a second return water distribution pipe 508 is fixedly arranged on the surface of the distributor 501 at one side of the first return water distribution pipe 507;

[0047] The flow direction of the geothermal heated water can be controlled by the flow control mechanism 5, so that the heat pump hot water system 3 and the geothermal hot water system 4 are no longer simply mutually connected as backup, but can use a stable heat source (geothermal in the geothermal hot water system 4) to assist the heat pump hot water system 3 to work. In winter, the temperature is low and the humidity is high. When it is lower than the dew point temperature, the evaporator 302 of the heat pump hot water system 3 is prone to frost. At this time, the entire heat pump hot water system 3 will not work normally. The solution in the prior art is generally to use the air source heat pump 301 to work in reverse, so that the evaporator 302 becomes a condenser. At this time, it is necessary to reversely draw heat from the hot water in the insulation storage tank 1, which is not worth the loss and will affect the water temperature inside the insulation storage tank 1. The present invention can use the hot water in the geothermal hot water system 4 to directly help the air source heat pump 301 defrost, which will not affect the water temperature inside the insulation storage tank 1, so as to assist the heat pump hot water system 3 to work;

[0048] When the flow control mechanism 5 is working, Fig.11 As shown in the left figure, at this time, the sealing plug 504 is located in a position so that the geothermal water inlet pipe 407 and the first distribution water inlet pipe are connected to each other, and the geothermal water return pipe 408 and the first water return pipe are connected to each other, so that the water inside the second heat exchange pipe 403 and the water inside the heat preservation storage tank 1 form a circulation; at this time, the second electric push rod 509 is extended, which can push the sealing plug 504 to move to the right, forming Fig.11 As shown in the right figure, at this time, the geothermal water inlet pipe 407 is connected to the second distribution water inlet pipe, and the geothermal water return pipe 408 is connected to the second water return pipe, so that the water inside the second heat exchange pipe 403 and the hollow protective net 305 form a cycle; in this way, the geothermal heated water can directly participate in defrosting;

[0049] The first water inlet distribution pipe 505 and the first water return distribution pipe 507 are mutually connected with the interior of the heat preservation storage tank 1; the second water inlet distribution pipe 506 and the second water return distribution pipe 508 are mutually connected with the interior of the protection net 305, and the interior of the protection net 305 is hollow; the second heat exchange pipe 403 can be mutually connected with the interior of the heat preservation storage tank 1 through the first water inlet distribution pipe 505 and the first water return distribution pipe 507; correspondingly, the second water inlet distribution pipe 506 and the second water return distribution pipe 508 can be mutually connected with the interior of the protection net 305; so that the hot water inside the second heat exchange pipe 403 can directly enter the protection net 305. At this time, since the protection net 305 is close to the evaporator 302, the high-temperature protection net 305 is used to accelerate and assist the evaporator 302 to defrost;

[0050] A draw plate 206 is movably interspersed in the middle of the flue 201, and third electric push rods 207 are fixedly arranged on both sides of the surface of the flue 201, and the movable end of the third electric push rod 207 is fixedly connected to the draw plate 206; the opening and closing of the flue 201 can be controlled by the draw plate 206, and when the draw plate 206 is stuck in the middle of the flue 201, the middle of the flue 201 is blocked, and the hot flue gas can only enter the guide bin 204 through the smoke inlet pipe 202, and then be diverted from the guide bin 204 to multiple first heat exchange pipes 205 to contact with the water inside the heat preservation storage tank 1 for heat exchange; the flue gas after heat exchange can flow back from the smoke return pipe 203 into the flue 201 and be discharged from the flue 201; and when the third electric push rod 207 is extended, the flue 201 is conducted, and the flue gas will only be discharged upward from the flue 201 with a thicker flow channel, so as to stop the waste heat exchange;

[0051] A cold water replenishment pipe 6 is fixedly provided on one side of the upper end of the thermal insulation storage tank 1, and a warm water outlet pipe 7 is fixedly provided on one side of the lower end of the surface of the thermal insulation storage tank 1. The cold water replenishment pipe 6 can be used to replenish water that needs to be heated into the thermal insulation storage tank 1, and the warm water outlet pipe 7 can be used to transport warm water to equipment that needs water.

[0052] Working principle: This hot water system can use a variety of heat sources to heat water:

[0053] Through the waste heat hot water system 2, in the use environment where hot smoke is discharged, the hot smoke can be directly guided through the inner middle part of the heat preservation storage tank 1; so that the hot smoke can exchange heat with the inside of the heat preservation storage tank 1; thus, the waste heat heating function can be achieved;

[0054] Electricity can be used to generate heat through the heat pump hot water system 3; its principle is that air from the outside of the air source heat pump 301 flows through the evaporator 302, and the refrigerant expands and evaporates inside the evaporator 302, absorbing heat and absorbing heat energy from the air, and then the refrigerant enters the condenser to condense and release heat, and contacts with the water source pumped in the heat pump water inlet pipe 303 for heat exchange, and the water source after heat exchange enters the heat preservation storage tank 1 through the heat pump return pipe 304 for storage, and this continuous cycle can gradually heat the water inside the heat preservation storage tank 1;

[0055] The use of geothermal hot water system 4 for heating is to use the high temperature deep underground to produce hot water; the three hot water systems can serve as backup for each other, and the waste heat hot water system 2 and the geothermal hot water system 4 are preferentially used for hot water. When the water demand increases greatly and the above hot water systems cannot meet the demand, the heat pump hot water system 3 can be used;

[0056] The geothermal hot water system 4 in the present invention is different from the traditional geothermal hot water system 4. The present invention adopts phase change heat transfer. Since the depth of the buried pipe 401 of geothermal hot water is generally tens of meters or even hundreds of meters, if the pump body is used to circulate water for heat exchange, the cost is high and the pipeline is troublesome to lay. After the water source is heat exchanged, the heat of the hot water is dissipated quickly in the long pipeline.

[0057] The present application utilizes phase change heat transfer to make the thermosensitive liquid inside the heat pipe 402 evaporate after absorbing the underground heat source. After evaporation, the density of the evaporated gas is less than that of the air and rises under the action of buoyancy, thereby automatically making up for the depth of the buried pipe 401, and there is no need to lay a water supply pipeline. The evaporated gas automatically rises and contacts the second heat exchange pipe 403 and the heat conduction fin plate 404, transferring the heat energy to the water source in the second heat exchange pipe 403 for condensation, and then condenses into liquid droplets and flows back into the heat conduction pipe 402 like rain. In this way, most of the pipelines can be solved. While facilitating the laying of pipelines, it can also avoid the faster heat dissipation of water flow caused by longer pipelines. At the same time, the device uses underground heat energy for heat exchange, does not pollute groundwater, and does not use groundwater, so that heat is taken without water.

[0058] At the same time, when the present invention is used, the heat pump hot water system 3 and the geothermal hot water system 4 are no longer simply mutually connected as backup, but can use a stable heat source (the geothermal heat in the geothermal hot water system 4) to assist the heat pump hot water system 3 to work. In winter, the temperature is low and the humidity is high. When it is lower than the dew point temperature, the evaporator 302 of the heat pump hot water system 3 is prone to frost. At this time, the entire heat pump hot water system 3 will not be able to work normally. The solution in the prior art is generally to use the air source heat pump 301 to work in reverse, so that the evaporator 302 becomes a condenser. At this time, it is necessary to reversely draw heat from the hot water in the insulation storage tank 1, which is not worth the loss and will affect the water temperature inside the insulation storage tank 1. The present invention can use the hot water in the geothermal hot water system 4 to directly help the air source heat pump 301 defrost, which will not affect the water temperature inside the insulation storage tank 1, so as to assist the heat pump hot water system 3 to work; this can significantly improve the operating effect of the system in winter;

[0059] At the same time, when the present invention is used, for the geothermal hot water system 4, the water source is pumped by compression and extrusion. This pumping method is convenient for water flow control. The water flow will flow when you want it to flow, and it can be stopped immediately when you want it to stop, so as to give the water source in the second heat exchange sufficient heat exchange time; at the same time, the pumping pressure is large, because the piston 406 directly squeezes downward to pump, and it no longer relies on air pressure to pump the liquid, and there is no need to use a multi-stage booster pump. Even if the buried pipe 401 is buried deep underground, the water can be pumped up.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water source heat pump hot water system utilizing waste heat and geothermal energy, comprising a heat preservation storage tank (1), characterized in that: A waste heat hot water system (2) for producing hot water using waste heat from flue gas is disposed on one side of the heat-insulating storage tank (1), a heat pump hot water system (3) for producing hot water using electric hot water is disposed on one side of the waste heat hot water system (2), and a geothermal hot water system (4) for producing hot water using geothermal energy is disposed on one side of the heat-insulating storage tank (1).

2. A water source heat pump hot water system utilizing waste heat and geothermal energy according to claim 1, characterized in that: The waste heat hot water system (2) comprises a flue (201), a smoke inlet pipe (202), a smoke return pipe (203), a guide chamber (204), and a first heat exchange pipe (205); a flue (201) is arranged on one side of the surface of the heat preservation storage tank (1); a smoke inlet pipe (202) is fixedly arranged on the outer surface of the lower end of the flue (201); a smoke return pipe (203) is fixedly arranged on the outer surface of the upper end of the flue (201); guide chambers (204) are fixedly arranged at both the lower end and the upper end of the heat preservation storage tank (1); a first heat exchange pipe (205) is fixedly arranged between the guide chambers (204); the smoke inlet pipe (202) and the interior of the lower guide chamber (204) are in communication with each other; the smoke return pipe (203) and the interior of the upper guide chamber (204) are in communication with each other.

3. A water source heat pump hot water system utilizing waste heat and geothermal energy according to claim 1, characterized in that: The heat pump hot water system (3) comprises an air source heat pump (301), an evaporator (302), a heat pump water inlet pipe (303), a heat pump water return pipe (304), and a protective net (305); the air source heat pump (301) is arranged on one side of the heat preservation storage tank (1); the evaporator (302) is fixedly arranged on one side of the inside of the air source heat pump (301); a heat pump water inlet pipe (303) is fixedly arranged between the lower end of the evaporator (302) and the heat preservation storage tank (1); a heat pump water return pipe (304) is fixedly arranged between the upper end of the evaporator (302) and the heat preservation storage tank (1); and a protective net (305) is fixedly arranged on the outside of the evaporator (302) of the air source heat pump (301).

4. The water source heat pump hot water system using waste heat and geothermal energy according to claim 1, characterized in that: The geothermal hot water system (4) comprises a buried pipe (401), a heat conducting pipe (402), a second heat exchange pipe (403), a heat conducting fin plate (404), a first electric push rod (405), a piston (406), a geothermal water inlet pipe (407), a geothermal water return pipe (408), a first non-return valve (409), and a second non-return valve (410). The lower end of the heat preservation storage tank (1) is provided with a buried pipe (401), the lower end of the buried pipe (401) is fixedly provided with a heat conducting pipe (402), a heat-sensitive liquid is arranged inside the heat conducting pipe (402), the upper end of the buried pipe (401) is fixedly provided with a second heat exchange pipe (403), and the lower end of the outer surface of the second heat exchange pipe (403) is evenly fixedly provided with a plurality of heat conducting fin plates (404). A first electric push rod (405) is fixedly arranged at the upper end of the second heat exchange tube (403) inside the buried tube (401); a piston (406) is movably engaged with the upper end of the second heat exchange tube (403); the movable end of the first electric push rod (405) and the piston (406) are fixedly connected; a geothermal water inlet pipe (407) is fixedly arranged on one side of the second heat exchange tube (403); a geothermal water return pipe (408) is arranged on the side of the second heat exchange tube (403) away from the geothermal water inlet pipe (407); a first one-way valve (409) is arranged between the geothermal water inlet pipe (407) and the second heat exchange tube (403); and a second one-way valve (410) is arranged between the geothermal water return pipe (408) and the second heat exchange tube (403).

5. A water source heat pump hot water system utilizing waste heat and geothermal heat according to claim 4, characterized in that: The first one-way valve (409) is connected from the geothermal water inlet pipe (407) to the inside of the second heat exchange pipe (403), and the second one-way valve (410) is connected from the inside of the second heat exchange pipe (403) to the inside of the geothermal water return pipe (408).

6. The water source heat pump hot water system using waste heat and ground heat according to claim 4, characterized in that: A flow direction control mechanism (5) for controlling the flow direction of water is disposed at the upper ends of the geothermal water inlet pipe (407) and the geothermal water return pipe (408), and the flow direction control mechanism (5) comprises a distributor (501), a cavity (502), a movable rod (503), a sealing plug (504), a second electric push rod (509), a first water inlet distribution pipe (505), a second water inlet distribution pipe (506), a first water return distribution pipe (507), a second water return distribution pipe (508), and a second water return distribution pipe (509). 08); a distributor (501) is fixedly provided at the upper end of the geothermal water inlet pipe (407) and the geothermal water return pipe (408); cavities (502) are provided on both sides of the distributor (501); the geothermal water inlet pipe (407) and the geothermal water return pipe (408) are respectively connected to the inside of the cavity (502); a movable rod (503) is movably interspersed in the middle of the inner side of the distributor (501); and a movable rod (503) is fixedly provided on the outer surface of the movable rod (503). A sealing plug (504) is provided, and the sealing plug (504) is snap-fitted and arranged inside the cavity (502). Four sealing plugs (504) are provided, and are symmetrically arranged in groups of two on both sides of the movable rod (503). A second electric push rod (509) is fixedly provided on one side of the surface of the distributor (501), and the movable end of the second electric push rod (509) is fixedly connected to the movable rod (503). A first water inlet distribution pipe (505) is fixedly provided on the surface of the distributor (501) at the upper end of the right cavity (502). A second water inlet distribution pipe (506) is fixedly provided on the surface of the distributor (501) at one side of the first water inlet distribution pipe (505). A first water return distribution pipe (507) is fixedly provided on the surface of the distributor (501) at the upper end of the left cavity (502). A second water return distribution pipe (508) is fixedly provided on the surface of the distributor (501) at one side of the first water return distribution pipe (507).

7. A water source heat pump hot water system using waste heat and geothermal heat according to claim 3 or 6, characterized in that: The first water inlet distribution pipe (505) and the first water return distribution pipe (507) are connected to the interior of the heat preservation storage tank (1); the second water inlet distribution pipe (506) and the second water return distribution pipe (508) are connected to the interior of the protective net (305), and the interior of the protective net (305) is hollow.

8. The water source heat pump hot water system using waste heat and geothermal energy according to claim 2, characterized in that: A draw plate (206) is movably interspersed in the middle of the flue (201), and third electric push rods (207) are fixedly arranged on both sides of the surface of the flue (201), and the movable end of the third electric push rod (207) is fixedly connected to the draw plate (206).

9. The water source heat pump hot water system using waste heat and ground heat according to claim 1, characterized in that: A cold water replenishment pipe (6) is fixedly arranged on one side of the upper end of the heat-insulating storage tank (1), and a warm water outlet pipe (7) is fixedly arranged on one side of the lower end of the surface of the heat-insulating storage tank (1).

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