Double-source heat pump hot water system and control method

Abstract

The invention discloses a double-source heat pump hot water system and a control method, and relates to the technical field of heat pump systems, and the double-source heat pump hot water system comprises a heat pump unit, a hot water circulation assembly, a waste water heat exchange assembly, a pipeline connecting assembly and a washing assembly; the hot water circulation assembly comprises a hot water tank, a first pipeline and a second pipeline. The wastewater heat exchange assembly comprises a wastewater heat exchanger, a wastewater heat exchange runner is used for introducing wastewater, and a new water heat exchange runner is provided with a fourth inlet and a fourth outlet; the pipeline connecting assembly comprises a third pipeline, a fifth pipeline and a new water input pipe, and a fourth outlet is provided with a water supplementing pipeline communicated with the first pipeline; the washing assembly comprises an eighth pipeline and a ninth pipeline. In the process of utilizing the heat of the waste water, the waste water does not need to enter the heat pump unit for heat exchange, and blockage or corrosion of the heat pump unit can be avoided; the wastewater heat exchanger through which wastewater flows can be washed, and the service life of the wastewater heat exchanger is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of heat pump systems, and in particular to a dual-source heat pump hot water system, and also to a control method for a dual-source heat pump hot water system. Background Art

[0002] Many years ago, water source heat pump systems were common in the market, such as Figure 1 As shown, the heat source water enters the heat pump unit through the condenser heat exchange channel. After the heat source water is extracted by the heat pump unit, the cold water flows into the sewer or is recharged into the well. The advantage of this structure is that the groundwater heat source is stable. However, it also has several disadvantages, such as wasting precious groundwater resources; increasing the pressure of cold water recharge; the recharged cold water can easily disrupt the thermal balance of the groundwater, causing pollution and affecting the groundwater ecosystem; and the large amount of circulating water, resulting in low overall energy efficiency.

[0003] In recent years, wastewater heat has been used to heat pump units to form wastewater source heat pump systems. Common wastewater source heat pump systems on the market include Figure 2 As shown, wastewater typically first exchanges heat with fresh water before entering the heat pump unit's evaporator to release further heat before being discharged. Simultaneously, fresh water, having been heated by the wastewater, enters the heat pump system's condenser for further heating before entering the hot water tank for heating. Wastewater-source heat pump systems are simple and offer high initial operating efficiency. However, wastewater entering the heat pump unit's evaporator can quickly cause clogging and corrosion, significantly reducing heat exchange efficiency. These clogging and oily contaminants are difficult to clean and can easily corrode and damage the evaporator.

[0004] While utilizing the waste heat of wastewater, how to prevent wastewater from damaging the heat pump unit has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The present application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, embodiments of the present application provide a dual-source heat pump hot water system that utilizes wastewater heat without requiring the wastewater to enter a heat pump unit for heat exchange, thereby preventing blockage or corrosion of the heat pump unit. Furthermore, the wastewater heat exchanger through which the wastewater flows can be washed, thereby increasing the lifespan of the wastewater heat exchanger.

[0006] An embodiment of the present application also provides a control method for a dual-source heat pump hot water system.

[0007] According to an embodiment of the first aspect of the present application, a dual-source heat pump hot water system is provided, including a heat pump unit, the heat pump unit including a compressor, a condenser, a throttling element and an evaporator forming a refrigerant cycle, the condenser having a condenser heat exchange flow channel, the evaporator having an evaporator heat exchange flow channel, the condenser heat exchange flow channel is provided with a first inlet and a first outlet, the evaporator heat exchange flow channel is provided with a second inlet and a second outlet; a hot water circulation component, the hot water circulation component including a hot water tank, a first pipeline and a second pipeline, the hot water tank is provided with a circulation water inlet and a circulation water outlet, the two ends of the first pipeline are respectively connected to the The circulating water outlet and the first inlet, the two ends of the second pipeline are respectively connected to the first outlet and the circulating water inlet, the first pipeline or the second pipeline is provided with a first pump to transport the heated water in the hot water tank from the first pipeline to the condenser heat exchange flow channel of the condenser for heating, and then return it to the hot water tank from the second pipeline; a wastewater heat exchange component, the wastewater heat exchange component includes a wastewater heat exchanger, the wastewater heat exchanger has a wastewater heat exchange flow channel and a new water heat exchange flow channel for mutual heat exchange, the wastewater heat exchange flow channel is used to pass wastewater, and the wastewater heat exchange flow channel is provided with a third inlet and a third outlet, The new water heat exchange flow channel is provided with a fourth inlet and a fourth outlet; a pipeline connection assembly, the pipeline connection assembly includes a third pipeline, a fifth pipeline and a new water input pipe, one end of the new water input pipe is the new water inlet, the other end of the new water input pipe is connected to the second inlet, the new water input pipe is provided with a first valve to control the opening and closing of the new water input pipe, the two ends of the third pipeline are respectively connected to the second outlet and the fourth inlet, the fourth outlet is provided with a water supply pipeline connected to the first pipeline, the water supply pipeline is provided with a second valve to control the opening and closing of the water supply pipeline, one end of the fifth pipeline is connected to the second outlet and the fourth inlet, one end of the eighth pipeline is connected to the third pipeline, the other end of the fifth pipeline is the new water outlet, and the fifth pipeline is provided with a third valve to control the opening and closing of the new water outlet; and a water washing component, the water washing component includes an eighth pipeline and a ninth pipeline, one end of the eighth pipeline is connected to the new water inlet, the other end of the eighth pipeline is connected to the third outlet, the eighth pipeline is provided with a fifth valve to control the opening and closing of the eighth pipeline, one end of the ninth pipeline is connected to the third inlet, the other end of the ninth pipeline is the flushing drain, and the ninth pipeline is provided with a sixth valve to control the opening and closing of the ninth pipeline.

[0008] The dual-source heat pump hot water system described above has at least the following beneficial effects: The technical solution, through the hot water circulation component, wastewater heat exchange component, and fresh water pipeline component, through the connection design of each pipeline and the opening and closing control of each valve component, has at least a wastewater waste heat replenishment heating mode and a water source heat pump heating mode, thereby improving adaptability and application scope. Specifically, in the wastewater waste heat replenishment heating mode, when the hot water tank needs to be replenished with water, the heat pump component increases the temperature difference to enhance the heat exchange effect, allowing the fresh water to fully absorb the heat of the wastewater and then replenish the hot water tank. In the water source heat pump heating mode, when the wastewater is insufficient, the heat pump component uses the fresh water as a heat source to heat the circulating hot water, causing the temperature in the hot water tank to gradually increase. In the dual-source heat pump hot water system of the present application, during the process of utilizing the waste heat of wastewater, the wastewater does not need to enter the heat pump unit for heat exchange, which can avoid blockage or corrosion of the heat pump unit. In addition, the wastewater heat exchanger through which the wastewater flows can also be washed with water. New water flows from the eighth pipeline to the wastewater heat exchange flow channel of the wastewater heat exchanger, and then is discharged from the ninth pipeline. By flushing the wastewater heat exchanger, the service life of the wastewater heat exchanger can be increased.

[0009] According to an embodiment of the first aspect of the present application, the wastewater heat exchange component also includes a wastewater tank for holding wastewater, the wastewater tank is connected to the third outlet through a sixth pipeline, the sixth pipeline is provided with a second pump to introduce wastewater into the wastewater heat exchange flow channel, the fourth outlet is provided with a seventh pipeline connected thereto, the other end of the seventh pipeline is a wastewater discharge outlet, and the seventh pipeline is provided with a fourth valve to control the opening and closing of the wastewater discharge outlet.

[0010] According to an embodiment of the first aspect of the present application, the dual-source heat pump hot water system further includes a drug wash assembly for performing drug wash on the wastewater heat exchange flow channel. The drug wash assembly includes a drug tank and a tenth pipeline. The drug tank is provided with a drug outlet and a drug return port. The ends of the tenth pipeline are connected to the drug outlet and the third outlet, respectively. The tenth pipeline is provided with a fourth pump to transport the drug in the drug tank from the tenth pipeline to the wastewater heat exchange flow channel. Furthermore, the drug wash assembly further includes an eleventh pipeline. One end of the eleventh pipeline is connected to the ninth pipeline, thereby connecting to the third inlet. The other end of the eleventh pipeline is connected to the drug return port, allowing the drug to flow back from the wastewater heat exchange flow channel to the drug tank. The eleventh pipeline is provided with a seventh valve to control the opening and closing of the eleventh pipeline. Furthermore, the drug return port is provided with a twelfth pipeline connected to the eighth pipeline, so that new water can be replenished from the eighth pipeline and the second pipeline to the drug tank. Through this technical solution, the medicine in the medicine tank flows to the wastewater heat exchange channel through the tenth pipeline for medicine washing under the action of the fourth pump, and then is discharged from the ninth pipeline or returned to the medicine tank from the eleventh pipeline.

[0011] According to an embodiment of the first aspect of the present application, the tenth pipeline is provided with a thirteenth pipeline connected to the second pipeline to connect to the first outlet, and the eleventh pipeline is provided with a fourteenth pipeline connected to the first pipeline to connect to the first inlet, so that the liquid medicine in the liquid medicine tank is transported from the tenth pipeline, the thirteenth pipeline, and the second pipeline to the condenser heat exchange flow channel by the fourth pump, and then returns to the liquid medicine tank through the fourteenth pipeline and the eleventh pipeline. The fourteenth pipeline is provided with a ninth valve to control the opening and closing of the fourteenth pipeline. A fifteenth pipeline for discharging the liquid medicine is provided at the bottom of the liquid medicine tank, and the fifteenth pipeline is provided with a tenth valve. Through this technical solution, the liquid medicine in the liquid medicine tank, under the action of the fourth pump, flows through the tenth pipeline, the thirteenth pipeline, and the second pipeline to the condenser heat exchange flow channel, thereby descaling the condenser, and then returns to the liquid medicine tank through the second pipeline, the fourteenth pipeline, and the eleventh pipeline.

[0012] According to an embodiment of the first aspect of the present application, the pipe connection assembly further includes a fourth pipe, the two ends of the fourth pipe being connected to the fourth outlet and the second inlet respectively, and the fourth pipe being provided with a third pump to transport the new water in the third pipe to the new water heat exchange channel and then to flow to the fourth pipe. Through this technical solution, the embodiment of the first aspect of the present application can also realize a wastewater source heat pump hot water mode. Under the action of the third pump, the cold water circulates between the evaporator heat exchange channel, the third pipe, the new water heat exchange channel, and the fourth pipe. When the hot water in the hot water tank needs to be heated, the heat pump assembly utilizes the waste heat of the waste water, specifically by absorbing the waste heat of the waste water through the waste water heat exchanger to heat the circulating cold water. The circulating cold water releases heat through the evaporator, and the condenser heats the circulating hot water with the absorbed heat, so that the temperature in the hot water tank is continuously raised.

[0013] According to an embodiment of the second aspect of the present application, a control method for a dual-source heat pump hot water system is provided, which controls the dual-source heat pump hot water system described in the embodiment of the first aspect of the present application, and adjusts the dual-source heat pump hot water system to a wastewater waste heat utilization water supply heating mode, wherein the wastewater waste heat utilization water supply heating mode includes a direct heating mode and a circulation heating mode, wherein the direct heating mode of the wastewater waste heat utilization water supply heating mode is: new water flows from the new water inlet pipe to the evaporator heat exchange flow channel, then flows through the third pipe to the new water heat exchange flow channel, and then flows through the water supply pipe to the first pipe; the new water flowing into the water supply pipe flows to the condenser heat exchange flow channel, and then passes through the second pipe Flows back to the hot water tank; the wastewater in the wastewater pool flows to the wastewater heat exchange channel through the sixth pipeline, and then is discharged through the seventh pipeline; the circulating heating method of the wastewater waste heat utilization water supply heating mode is: new water flows from the new water input pipe to the evaporator heat exchange channel, then flows to the new water heat exchange channel through the third pipeline, and then flows to the first pipeline through the water supply pipeline; the heated water in the hot water tank flows out through the first pipeline, and flows to the condenser heat exchange channel together with the new water flowing into the water supply pipeline, and then flows back to the hot water tank through the second pipeline; the wastewater in the wastewater pool flows to the wastewater heat exchange channel through the sixth pipeline, and then is discharged through the seventh pipeline.

[0014] According to an embodiment of the second aspect of the present application, a control method for a dual-source heat pump hot water system is provided, which controls the dual-source heat pump hot water system described in the embodiment of the first aspect of the present application, and adjusts the dual-source heat pump hot water system to a wastewater source heat pump hot water mode or a water source heat pump hot water mode, wherein the wastewater source heat pump hot water mode is: cold water circulates between the evaporator heat exchange flow channel, the third pipeline, the new water heat exchange flow channel, and the fourth pipeline under the action of the third pump; the heated water of the hot water tank flows to the condenser heat exchange flow channel through the first pipeline, and then flows back to the hot water tank through the second pipeline; the wastewater of the wastewater tank flows to the wastewater heat exchange flow channel through the sixth pipeline, and then is discharged through the seventh pipeline; the water source heat pump hot water mode is: new water flows from the new water input pipe to the evaporator heat exchange flow channel, and then is discharged through the third pipeline and the fifth pipeline; the heated water of the hot water tank flows to the condenser heat exchange flow channel through the first pipeline, and then flows back to the hot water tank through the second pipeline.

[0015] According to an embodiment of the second aspect of the present application, a control method for a dual-source heat pump hot water system is provided, which controls the dual-source heat pump hot water system described in the embodiment of the first aspect of the present application, and adjusts the dual-source heat pump hot water system to a wastewater heat exchanger water washing mode, a wastewater heat exchanger chemical washing mode, or a condenser descaling mode, wherein the wastewater heat exchanger water washing mode is: new water flows from the eighth pipeline to the wastewater heat exchange flow channel and then is discharged from the ninth pipeline; the wastewater heat exchanger chemical washing mode is: the chemical in the chemical water tank flows to the wastewater heat exchange flow channel through the tenth pipeline under the action of the fourth pump, and then is discharged from the ninth pipeline or returns to the chemical water tank from the eleventh pipeline; the condenser descaling mode is: the chemical in the chemical water tank flows to the condenser heat exchange flow channel through the tenth pipeline, the thirteenth pipeline, and the second pipeline under the action of the fourth pump, and then returns to the chemical water tank from the first pipeline, the fourteenth pipeline, and the eleventh pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 It is a structural diagram of the first prior art;

[0018] Figure 2 It is a structural diagram of the second prior art;

[0019] Figure 3 is a schematic structural diagram of an embodiment of the present application, wherein the cooling component and the heating component are not shown;

[0020] Figure 4 This is a structural diagram of the water replenishment heating mode using wastewater waste heat in an embodiment of the present application, wherein the heating is direct heating;

[0021] Figure 5 This is a structural diagram of the water replenishment heating mode using wastewater waste heat in an embodiment of the present application, wherein the heating is cyclic heating;

[0022] Figure 6 This is a schematic diagram of the structure of the wastewater source heat pump hot water mode of the embodiment of the present application;

[0023] Figure 7 This is a schematic diagram of the structure of the water source heat pump hot water mode of the embodiment of the present application;

[0024] Figure 8 This is a structural diagram of the water washing mode of the wastewater heat exchanger in an embodiment of the present application;

[0025] Figure 9 This is a structural diagram of the chemical washing mode of the wastewater heat exchanger in an embodiment of the present application;

[0026] Figure 10 This is a structural diagram of the condenser descaling mode of an embodiment of the present application;

[0027] Figure 11 is a schematic structural diagram of an embodiment of the present application, wherein a cooling component and a heating component are shown;

[0028] Figure 12 This is a schematic diagram of the structure of the combined cooling and heating mode of the embodiment of the present application;

[0029] Figure 13 This is a structural diagram of the wastewater source heat pump heating mode of an embodiment of the present application;

[0030] Figure 14 It is a structural diagram of the water source heat pump heating mode of an embodiment of the present application.

[0031] Reference numerals: heat pump unit 110 , 120 , 310 , compressor 111 , 211 , 311 , condenser 112 , 212 , 312 , throttling element 113 , 213 , 313 , evaporator 114 , 214 , 314 , circulation pump 122 ;

[0032] Hot water circulation assembly 320, hot water tanks 121, 221, 321, first pipeline 322, first pump 323, second pipeline 324;

[0033] Wastewater heat exchange assembly 330, wastewater tanks 231, 331, sixth pipeline 332, second pump 333, wastewater heat exchangers 232, 334, seventh pipeline 335, fourth valve 336;

[0034] Fresh water inlet pipe 341, first valve 342, third pipeline 343, fifth pipeline 344, third valve 345, fourth pipeline 346, third pump 347, water supply pipeline 348, second valve 349;

[0035] Water washing assembly 350, eighth pipeline 351, fifth valve 352, ninth pipeline 353, sixth valve 354;

[0036] Chemical washing assembly 360, chemical water tank 361, tenth pipeline 362, fourth pump 363, eleventh pipeline 364, seventh valve 365, fourteenth pipeline 366, ninth valve 367, thirteenth pipeline 368;

[0037] Refrigeration assembly 370, first air conditioning heat exchanger 371, sixteenth pipeline 372, seventeenth pipeline 373, fifth pump 374, eleventh valve 375;

[0038] Heating assembly 380, second air conditioning heat exchanger 381, eighteenth pipeline 382, ​​nineteenth pipeline 383, sixth pump 384, twelfth valve 385;

[0039] The fifteenth pipeline 391 , the tenth valve component 392 , the twelfth pipeline 393 , and the eighth valve component 394 . DETAILED DESCRIPTION

[0040] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0044] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0046] In the prior art, Figure 1 The water source heat pump system shown in the figure has a heat pump unit 110 including a compressor 111, a condenser 112, a throttling element 113, and an evaporator 114 that form a refrigerant cycle. The heat pump unit 110 can be used to heat new water. The main principle is that the evaporator 114 absorbs the heat of the heat source water, and then the condenser 112 uses the absorbed heat to heat the new water. Specifically, the evaporator 114 has an evaporator heat exchange flow channel for the heat source water to flow through. The heat pump unit can absorb the heat of the heat source water. The condenser 112 has a condenser heat exchange flow channel for the new water to flow through, which can exchange heat with the new water and heat the new water. The hot water tank 121 is provided with a circulation pipeline, and the circulation pipeline is provided with a circulation pump 122 to flow the heated water into the condenser 112 for circulation heating. Among them, the heat source water enters the heat pump unit 110 through the condenser heat exchange flow channel. After the heat source water is extracted from the heat pump unit 110, the cold water formed flows into the sewer or is recharged into the well. The advantage of this structural method is that the groundwater heat source is stable, but it also has many disadvantages, such as causing waste of precious groundwater resources; increasing the reinjection pressure of cold water; the reinjected cold water can easily break the thermal balance of groundwater, easily causing pollution and affecting the groundwater ecology; the circulating water volume is large and the overall energy efficiency is low.

[0047] With the innovation of technology, in recent years, wastewater waste heat has been used to apply it to heat pump units to form wastewater source heat pump systems. Figure 2The wastewater source heat pump system shown in the figure similarly includes a heat pump unit 210 comprising a compressor 211, a condenser 212, a throttling element 213, and an evaporator 214, which form a refrigerant cycle. The specific principle of the wastewater source heat pump system is that the wastewater in the wastewater tank 231 first exchanges heat with new water in the wastewater heat exchanger 232, then enters the evaporator 214 of the heat pump unit 210 to further release heat before being discharged. At the same time, the new water, which has been heated by heat exchange with the wastewater, enters the condenser 212 of the heat pump assembly 210 to further heat it, and then enters the hot water tank 221 for heating. The wastewater source heat pump system is simple and has high initial operating efficiency. However, since the wastewater entering the evaporator 213 of the heat pump unit 210 will quickly cause dirt, blockage, and corrosion, thereby greatly reducing the heat exchange efficiency, the dirt, blockage, and oil stains are difficult to clean and are prone to corroding and damaging the evaporator.

[0048] In the process of utilizing wastewater waste heat, it is difficult to avoid the clogging and corrosion of the heat pump unit caused by the wastewater in the existing technology. Therefore, the present application provides a dual-source heat pump hot water system that utilizes the wastewater heat without the wastewater entering the heat pump unit for heat exchange, thus avoiding clogging or corrosion of the heat pump unit. The wastewater heat exchanger through which the wastewater flows can also be washed with water, thereby increasing the service life of the wastewater heat exchanger.

[0049] Refer to the following Figure 3 This embodiment describes a dual-source heat pump hot water system, including a heat pump unit 310, a hot water circulation component 320, a wastewater heat exchange component 330, a pipe connection component, and a water washing component 350.

[0050] Heat pump unit 310 includes a compressor 311, which forms a refrigerant cycle; a condenser 312; a throttling element 313; and an evaporator 314. Condenser 312 has a condenser heat exchange channel, through which water flows to exchange heat with the condenser. The condenser heat exchange channel has a first inlet and a first outlet. Evaporator 314 has an evaporator heat exchange channel, through which water flows to exchange heat with the evaporator. The evaporator heat exchange channel has a second inlet and a second outlet.

[0051] The hot water circulation component 320 includes a hot water tank 321, a first pipeline 322 and a second pipeline 324. The hot water tank 321 is provided with a circulating water inlet and a circulating water outlet. The two ends of the first pipeline 322 are respectively connected to the circulating water outlet and the first inlet, and the two ends of the second pipeline 324 are respectively connected to the first outlet and the circulating water inlet. It is understood that in some embodiments, the hot water tank 321, the first pipe 322, the condenser heat exchange flow path, and the second pipe 324 form a circulating hot water loop, wherein the first pipe 322 or the second pipe 324 is provided with a first pump 323 to transport the heated water in the hot water tank 321 from the first pipe 322 to the condenser heat exchange flow path of the condenser 312 for heating, and then return it to the hot water tank 321 through the second pipe 324. In this embodiment, the heated water in the hot water tank 321 is transported to the condenser heat exchange flow path for heating by the first pump 323, and then returns to the heated water tank 321, thus circulating the heating, wherein the first pump 323 is provided in the first pipe 322. Of course, in some embodiments, the first pump 323 can also be disabled, and the water flow can be introduced into the first inlet through other pipes, then heated by the condenser, and then returned to the hot water tank 321 through the second pipe 324.

[0052] The wastewater heat exchange assembly 330 includes a wastewater heat exchanger 334, which has a wastewater heat exchange channel and a freshwater heat exchange channel for heat exchange with each other. The wastewater heat exchange channel is used to introduce wastewater. Specifically, the wastewater heat exchange channel is provided with a third inlet and a third outlet. The wastewater heat exchange assembly 330 also includes a wastewater tank 331 for holding wastewater. The wastewater tank 331 is connected to the third outlet via a sixth pipe 332. The sixth pipe 332 is provided with a second pump 333 to introduce wastewater into the wastewater heat exchange channel. The fourth outlet is provided with a seventh pipe 335 connected thereto. The other end of the seventh pipe is a wastewater discharge outlet. The seventh pipe 335 is provided with a fourth valve 336 to control the opening and closing of the wastewater discharge outlet. In some embodiments, wastewater collected in the wastewater tank 311 is transported by the second pump 333 to the wastewater heat exchange channel and the freshwater heat exchange channel of the wastewater heat exchanger 334 for heat exchange. Wherein, the new water heat exchange flow channel is provided with a fourth inlet and a fourth outlet.

[0053] The pipeline connection assembly includes a third pipeline 343, a fifth pipeline 344 and a new water input pipe 341. One end of the new water input pipe 341 is a new water inlet, and the other end of the new water input pipe 341 is connected to the second inlet. The new water input pipe 341 is provided with a first valve component 342 to control the opening and closing of the new water input pipe 341. The two ends of the third pipeline 343 are respectively connected to the second outlet and the fourth inlet. The fourth outlet is provided with a make-up water pipeline 348 connected to the first pipeline 322. The make-up water pipeline 348 is provided with a second valve component 349 to control the opening and closing of the make-up water pipeline 348. One end of the fifth pipeline 344 is connected to the third pipeline 343, and the other end of the fifth pipeline 344 is a new water discharge outlet. The fifth pipeline 344 is provided with a third valve component 345 to control the opening and closing of the new water discharge outlet.

[0054] The water washing assembly 350 includes an eighth pipe 351 and a ninth pipe 353. One end of the eighth pipe 351 is connected to the fresh water inlet, and the other end is connected to the third outlet, specifically to the seventh pipe 335. The eighth pipe 351 is then connected to the third outlet through the seventh pipe 335. A fifth valve 352 is provided in the eighth pipe 351 to control the opening and closing of the eighth pipe 351. One end of the ninth pipe 353 is connected to the third inlet, and the other end of the ninth pipe 353 is a flushing outlet. A sixth valve 354 is provided in the ninth pipe 353 to control the opening and closing of the ninth pipe 353. With the water washing assembly 350, fresh water can flow in from the eighth pipe 351, then backwash the wastewater heat exchange flow path of the wastewater heat exchanger 334 through the third outlet, and then be discharged from the third inlet through the ninth pipe 353. Since the new water in the eighth pipeline 351 needs to be introduced into the third outlet, the seventh pipeline 335 is provided with a fourth valve 336 , which can close the seventh pipeline 335 when backwashing the wastewater heat exchanger 334 .

[0055] In addition, the dual-source heat pump hot water system also includes a drug wash assembly 360 for performing drug wash on the wastewater heat exchange flow channel. The drug wash assembly 360 includes a drug tank 361 and a tenth pipeline 362. The drug tank 361 is provided with a drug outlet and a drug return. The two ends of the tenth pipeline 362 are connected to the drug outlet and the third outlet, respectively. The tenth pipeline 362 is provided with a fourth pump 363 to transport the drug in the drug tank 361 from the tenth pipeline 362 to the wastewater heat exchange flow channel. By providing the drug wash assembly 360, the drug tank 361 contains a drug for cleaning the pipes. The drug can be prepared by adding water to a conventional pipe cleaning agent available on the market. The drug is transported by the fourth pump 363 and backwashed from the third outlet to the wastewater heat exchange flow channel of the wastewater heat exchanger 334 before being discharged from the ninth pipeline 354. Furthermore, the drug washing component 360 also includes an eleventh pipeline 364, one end of the eleventh pipeline 364 is connected to the ninth pipeline 353, thereby connecting to the third inlet, and the other end of the eleventh pipeline 364 is connected to the medicine return port, so that the medicine can flow back from the wastewater heat exchange channel to the medicine tank 361. The eleventh pipeline 364 is provided with a seventh valve 365 to control the opening and closing of the eleventh pipeline. It can be understood that the medicine is transported by the fourth pump 363, and the medicine is used to backwash the wastewater heat exchange channel of the wastewater heat exchanger 334 from the third outlet. When the wastewater heat exchange channel is initially dirty, it can be discharged through the ninth pipeline 353, and the medicine can be returned to the medicine tank 361 in subsequent backwashing.

[0056] In addition, the liquid medicine return port is provided with a twelfth pipeline 393 that communicates with the eighth pipeline 351, allowing new water to be replenished from the eighth pipeline 351 and the second pipeline 324 to the liquid medicine tank 361. Twelfth pipeline 393 is provided with an eighth valve 394 to control the opening and closing of twelfth pipeline 393. In this way, new water can be replenished to the liquid medicine tank 361.

[0057] In some embodiments, the tenth pipeline 362 is provided with a thirteenth pipeline 368 connected to the second pipeline 324 to connect to the first outlet, and the eleventh pipeline 364 is provided with a fourteenth pipeline 366 connected to the first pipeline 322 to connect to the first inlet, so that the medicine in the medicine tank 361 is transported from the tenth pipeline 362, the thirteenth pipeline 368 and the second pipeline 324 to the condenser heat exchange flow channel through the fourth pump 363, and then returns to the medicine tank 361 from the fourteenth pipeline 366 and the eleventh pipeline 364. The fourteenth pipeline 366 is provided with a ninth valve component 367 to control the opening and closing of the fourteenth pipeline 366. The bottom of the medicine tank 361 is provided with a fifteenth pipeline 391 for discharging the medicine, and the fifteenth pipeline 391 is provided with a tenth valve component 392.

[0058] In the above technical solution, the connection design of each pipeline and the opening and closing control of each valve can be made so that the dual-source heat pump hot water system of the present invention has multiple application modes, improving adaptability and application scope. The specific control methods and principles of each mode will be explained in the control method of the dual-source heat pump hot water system presented below.

[0059] Reference Figures 3 to 5 The present application also provides a control method for a dual-source heat pump hot water system, which controls the above-mentioned dual-source heat pump hot water system and adjusts the dual-source heat pump hot water system to a wastewater waste heat utilization water replenishment heating mode, which includes a direct heating mode and a circulation heating mode.

[0060] Reference Figure 3 and Figure 5 , turn on the heat pump unit 310, open the second valve 349, close the third valve 345, and open the fourth valve 336. Since the water wash component and the chemical wash component are provided, the fourth valve 336 also needs to be opened, the fifth valve 352 needs to be closed, the sixth valve 354 needs to be closed, the seventh valve 365 needs to be closed, the eighth valve 394 needs to be closed, the ninth valve 367 needs to be closed, and the tenth valve 392 needs to be closed. The first pump 323 and the second pump 333 need to be turned on. Since the chemical wash component is provided, the fourth pump 363 should also be closed.

[0061] At this time, if Figure 5 As shown, the cyclic heating method of the wastewater waste heat utilization water supply heating mode is as follows: new water flows from the new water inlet pipe 341 to the evaporator heat exchange flow path, then flows through the third pipe 343 to the new water heat exchange flow path of the wastewater heat exchanger 334, and then flows through the water supply pipe 348 to the first pipe 322. The heated water from the hot water tank 321 flows out through the first pipe 322 and, together with the new water entering through the water supply pipe 348, flows to the condenser heat exchange flow path, and then flows back to the hot water tank 321 through the second pipe 324. The wastewater from the wastewater tank 331 flows through the sixth pipe 332 to the wastewater heat exchange flow path of the wastewater heat exchanger 334, and is then discharged through the seventh pipe 335.

[0062] It's understandable that when the hot water tank needs to be replenished, the new water is first cooled by passing through the evaporator. This increases the temperature difference between the new water and the wastewater to enhance the heat exchange effect, improve the efficiency of wastewater waste heat utilization, and allow the new water to fully absorb the wastewater's heat. Specifically, the new water first enters the heat pump component's evaporator to release heat and cool down. It then passes through the wastewater heat exchanger to exchange heat with the wastewater. The heat exchanged water is then mixed with the circulating hot water. After the mixture enters the condenser, it absorbs the previously released heat, heating it to the required temperature in one go, and finally entering the hot water tank.

[0063] To further illustrate, in the specific application of this application, in this embodiment, the new water selected is tap water, of course, well water can also be selected in other embodiments.

[0064] Figure 5 The wastewater waste heat is utilized in the water supply heating mode, and the hot water is heated by a circulating heating method, that is, the heated water in the hot water tank 321 and the new water flowing into the water supply pipe 348 flow together to the condenser heat exchange flow channel, and then flow back to the hot water tank 321 through the second pipe 324 after being heated.

[0065] Reference Figure 4 , also shows the waste water waste heat utilization water heating mode, but the hot water is heated by direct heating, which is the same as Figure 5 The illustrated circulating heating method differs in that the first pump 323 is turned off. At this point, the heated water from the hot water tank 321 does not flow through the first pipe 322 to the condenser heat exchange path. Instead, the condenser 312 heats only the new water flowing in through the make-up water pipe 348. In this case, the direct heating method utilizing wastewater waste heat in the make-up water heating mode is as follows: new water flows from the new water inlet pipe 341 to the evaporator heat exchange path, then through the third pipe 343 to the new water heat exchange path of the wastewater heat exchanger 334, and then through the make-up water pipe 348 to the first pipe 322. New water flowing in through the make-up water pipe 348 flows to the condenser heat exchange path, then back to the hot water tank 321 through the second pipe 324. Wastewater from the wastewater tank 331 flows through the sixth pipe 332 to the wastewater heat exchange path of the wastewater heat exchanger 334, and then is discharged through the seventh pipe 335.

[0066] In application, whether to choose direct heating or circulating heating for water replenishment, the user can choose according to the required hot water temperature. If the required water replenishment temperature is not high, direct heating can be used, which has high water replenishment efficiency; if the required water replenishment temperature is high, circulating heating can be selected.

[0067] In the aforementioned dual-source heat pump hot water system, the pipe connection assembly further includes a fourth pipe 346, the ends of which are connected to the fourth outlet and the second inlet, respectively. A third pump 347 is provided in the fourth pipe 346 to transport the new water in the third pipe 343 to the new water heat exchange channel and then to the fourth pipe 346. The end of the water supply pipe 348 connected to the fourth outlet is connected to the fourth pipe 346, thereby communicating with the fourth outlet. Based on this, the present application also provides a control method for the dual-source heat pump hot water system, which controls the aforementioned dual-source heat pump hot water system and adjusts the dual-source heat pump hot water system to either a wastewater-source heat pump hot water mode or a water-source heat pump hot water mode.

[0068] Reference Figure 3 and Figure 6, turn on the heat pump unit 310, close the first valve 342, the second valve 349, and the third valve 345. Because the water wash component and the chemical wash component are provided, the fourth valve 336 also needs to be opened, the fifth valve 352 closed, the sixth valve 354 closed, the seventh valve 365 closed, the eighth valve 394 closed, the ninth valve 367 closed, and the tenth valve 392 closed. Turn on the first pump 323, the second pump 333, and the third pump 347. Because the chemical wash component is provided, the fourth pump 363 should also be closed.

[0069] At this time, if Figure 6 As shown, the wastewater-source heat pump hot water mode is as follows: cold water, driven by the third pump 347, circulates between the evaporator heat exchange channel, the third pipeline 343, the fresh water heat exchange channel, and the fourth pipeline 346. Heated water from the hot water tank 321 flows through the first pipeline 322 to the condenser heat exchange channel, and then returns to the hot water tank 321 through the second pipeline 324. Wastewater from the wastewater tank 331 flows through the sixth pipeline 332 to the wastewater heat exchange channel, and then is discharged through the seventh pipeline 335. It is understood that when the water temperature in the hot water tank is too low and needs to be heated, the wastewater waste heat is utilized through indirect heat exchange. Specifically, the circulating cold water and wastewater exchange heat in the wastewater heat exchanger. The wastewater heat exchanger absorbs the wastewater waste heat to heat the circulating cold water. The circulating cold water releases heat through the evaporator, and the condenser in turn uses the absorbed heat to heat the circulating hot water, thereby continuously raising the temperature in the hot water tank.

[0070] Reference Figure 3 and Figure 7 , turn on the heat pump unit 310, close the second valve 349, and open the third valve 345. Because of the water wash and chemical wash components, it is also necessary to close the fourth valve 336, the fifth valve 352, the sixth valve 354, the seventh valve 365, the eighth valve 394, the ninth valve 367, and the tenth valve 392. Turn on the first pump 323, turn off the second pump 333, and the third pump 347. Because of the chemical wash component, the fourth pump 363 should also be turned off.

[0071] At this time, if Figure 7 As shown, the water source heat pump hot water mode is as follows: new water flows from the new water inlet pipe 341 to the evaporator heat exchange flow channel, and then is discharged through the third pipe 343 and the fifth pipe 344. The heated water in the hot water tank 321 flows through the first pipe 322 to the condenser heat exchange flow channel, and then flows back to the hot water tank 321 through the second pipe 324. It can be understood that when there is insufficient waste water, the heat pump assembly uses the new water as a heat source to heat the circulating hot water, causing the temperature in the hot water tank 321 to gradually increase. Specifically, the new water flows through the evaporator, releases heat, and is discharged. The condenser then uses the absorbed heat to heat the circulating hot water, and the temperature of the hot water tank continues to increase.

[0072] Reference Figure 3 、 Figures 8 to 10 The present application also provides a control method for a dual-source heat pump hot water system, which controls the above-mentioned dual-source heat pump hot water system and adjusts the dual-source heat pump hot water system to a wastewater heat exchanger water washing mode, a wastewater heat exchanger chemical washing mode, or a condenser descaling mode.

[0073] Reference Figure 3 and Figure 8 , shut down the heat pump unit 310, close the first valve 342, the second valve 349, the third valve 345, the fourth valve 336, the fifth valve 352, the sixth valve 354, the seventh valve 365, the eighth valve 394, the ninth valve 367, and the tenth valve 392. To ensure normal operation of the system, the first pump 323, the second pump 333, the third pump 347, and the fourth pump 363 should also be shut down.

[0074] At this time, if Figure 8 As shown, in the wastewater heat exchanger water washing mode, new water flows from the eighth pipe 351 to the wastewater heat exchange flow channel and is then discharged from the ninth pipe 353. In some embodiments, the eighth pipe 351 is connected to the new water inlet pipe 341 at the water inlet front end of the first valve member 342, that is, the first valve member 342 does not interfere with the eighth pipe 351.

[0075] Since high-temperature wastewater is often corrosive, contains oil, and suspended matter, oil easily adheres to the wastewater heat exchange channel of the wastewater heat exchanger, reducing water flow velocity and heat exchange efficiency, so frequent cleaning is required. Daily water washing is performed in water washing mode. Fresh water is introduced into the third outlet of the wastewater heat exchange channel through the eighth pipeline to backwash the wastewater heat exchange channel. At the same time, other pipelines that affect backwashing are closed through various valves. Backwashing the wastewater heat exchange channel of the wastewater heat exchanger can improve the efficiency and service life of the wastewater heat exchanger and reduce the cleaning workload of personnel.

[0076] Reference Figure 3 and Figure 9 First, shut down the heat pump unit 310, turn off the second pump 333, and turn on the fourth pump 363. To ensure normal operation of the system, shut down the first pump 323 and the third pump 347. Close the first valve 341, the second valve 349, the third valve 345, the fourth valve 336, the fifth valve 352, the sixth valve 354, the seventh valve 365, the eighth valve 394, the ninth valve 367, and the tenth valve 392.

[0077] At this time, you can combine Figure 9It can be understood that the chemical washing mode of the wastewater heat exchanger is: the chemical in the chemical tank 361 flows to the wastewater heat exchange flow channel through the tenth pipeline 362 under the action of the fourth pump 363, and then is discharged from the ninth pipeline 353.

[0078] Then, the sixth valve member 354 is closed and the seventh valve member 365 is opened. Figure 9 As shown, the chemical washing mode of the wastewater heat exchanger is: the chemical in the chemical tank 361 flows to the wastewater heat exchange flow channel through the tenth pipeline 362 under the action of the fourth pump 363, and then flows back to the chemical tank 361 through the eleventh pipeline 364.

[0079] It is understandable that after long-term use, even with water washing, it is difficult to clean the attached oil stains from the wastewater heat exchanger's wastewater heat exchanger flow channel. In this case, using a chemical washing method to backwash the wastewater heat exchanger's wastewater heat exchanger flow channel with chemical water can improve the efficiency and service life of the wastewater heat exchanger without having to disassemble the wastewater heat exchanger for cleaning. Specifically, since the wastewater heat exchanger flow channel is relatively dirty when the wastewater heat exchanger 334 is first chemically washed, the cleaning chemical water is first discharged through the ninth pipeline 353. In the subsequent chemical water backwash process, the chemical water can be returned to the chemical water tank 361.

[0080] In the wastewater heat exchanger chemical cleaning mode, after cleaning wastewater heat exchanger 334, the chemical solution in chemical tank 361 is heavily contaminated with dirt. At this point, the tenth valve 392 is opened to drain the contaminated chemical solution through the fifteenth pipe 391. Then, to refill chemical tank 361, the tenth valve 392 is closed and the eighth valve 394 is opened. New water is then pumped into chemical tank 361 through the eighth pipe 351 and the twelfth pipe 393. Pipe cleaning agent can then be added for further preparation.

[0081] Reference Figure 3 and Figure 10 , the fourth pump 363 is turned on. To ensure normal operation of the system, the first pump 323, the second pump 333, and the third pump 347 should also be turned off. The first valve 341 is closed, the second valve 349 is closed, the third valve 345 is closed, the fourth valve 336 is closed, the fifth valve 352 is closed, the sixth valve 354 is closed, the seventh valve 365 is closed, the eighth valve 394 is closed, the ninth valve 367 is opened, and the tenth valve 392 is closed.

[0082] At this time, if Figure 10As shown, in the condenser descaling mode, the chemical in the chemical tank 361, driven by the fourth pump 363, flows through the tenth pipe 362, the thirteenth pipe 368, and the second pipe 324 to the first outlet of the condenser heat exchange flow path. The chemical then flows out of the first inlet, passes through the first pipe 322, the fourteenth pipe 366, and the eleventh pipe 364, and returns to the chemical tank 361. It is understood that the condenser 312 of the heat pump unit 310, which flows through high-temperature hot water, is prone to scale formation on the pipe walls after long-term use. This scale formation will seriously reduce heat exchange efficiency. The condenser descaling mode allows the chemical to backwash the condenser heat exchange flow path of the condenser 312, removing the scale on the pipe walls. Similarly, in the condenser descaling mode, after cleaning the condenser 312, the chemical in the chemical tank 361 is heavily contaminated with scale. At this point, the tenth valve 392 is opened to drain the contaminated chemical through the fifteenth pipe 391. And referring to the chemical washing mode of the wastewater heat exchanger, refill water into the chemical tank 361, and then re-add the pipeline cleaning agent for preparation.

[0083] In the present application, the dual-source heat pump hot water system also involves the design of a refrigeration component 370 and a heating component 380 .

[0084] Reference Figure 11 and Figure 12 The dual-source heat pump hot water system further includes a refrigeration assembly 370, which includes a first air-conditioning heat exchanger 371. One end of the first air-conditioning heat exchanger 371 is connected to the second inlet via a sixteenth pipe 372, and the other end of the first air-conditioning heat exchanger 371 is connected to the second outlet via a seventeenth pipe 373. A fifth pump 374 is provided in either the sixteenth pipe 372 or the seventeenth pipe 373 to direct water from the seventeenth pipe 373 through the first air-conditioning heat exchanger 371 to the sixteenth pipe 372. In this embodiment, the fifth pump 374 is provided in the sixteenth pipe 372, and the seventeenth pipe 373 is provided with an eleventh valve 375.

[0085] In this application, the dual-source heat pump hot water system can be controlled to adjust the dual-source heat pump hot water system to the combined cooling and heating mode. In the combined cooling and heating mode, refer to Figure 12 , wherein the heat pump unit 310 is turned on, the first valve 342 is turned on, the eleventh valve 375 is turned on, the second valve 349 is closed, the third valve 345 is closed, the fourth valve 336 is closed, the fifth valve 352 is closed, the sixth valve 354 is closed, the seventh valve 365 is closed, the eighth valve 394 is closed, the ninth valve 367 is closed, and the tenth valve 392 is closed. The first pump 323 is turned on, the second pump 333 is turned off, the third pump 347 is turned off, the fourth pump 363 is turned off, and the fifth pump 374 is turned on.

[0086] like Figure 12As shown, under the action of the fifth pump 374, water flows from the seventeenth pipeline 373 through the first air conditioning heat exchanger 371 to the sixteenth pipeline 372, then through the evaporator heat exchange channel, where it is cooled by the evaporator before flowing back to the seventeenth pipeline 373. The heated water from the hot water tank 321 flows through the first pipeline 322 to the condenser heat exchange channel, where it is heated by the condenser before returning to the hot water tank 321 through the second pipeline 324. It is understood that some applications require both hot water production and air conditioning cooling. In this combined cooling and heating mode, after the heat pump unit is started, the condenser heats the water flowing through the condenser heat exchange channel to produce hot water. Furthermore, the evaporator cools the water flowing through the evaporator heat exchange channel, which is then cooled by the first air conditioning heat exchanger to supply air to the outside, providing cold air. This "hot water + cold air" combined cooling and heating mode achieves dual heating and cooling benefits, while being energy-efficient and highly efficient.

[0087] Reference Figure 11 、 Figure 13 and Figure 14 The dual-source heat pump hot water system also includes a heating assembly 380, which includes a second air-conditioning heat exchanger 381. One end of the second air-conditioning heat exchanger 381 is connected to the hot water tank 321 via an eighteenth pipe 382. The other end of the first air-conditioning heat exchanger 371 is connected to the circulating water inlet via a nineteenth pipe 383. A sixth pump 384 is provided in either the eighteenth pipe 382 or the nineteenth pipe 383 to direct water from the eighteenth pipe 382 through the second air-conditioning heat exchanger to the nineteenth pipe 383. In this embodiment, the sixth pump 384 is provided in the eighteenth pipe 382, ​​and the nineteenth pipe 383 is provided with a twelfth valve 385.

[0088] In this application, the dual-source heat pump hot water system can be controlled and adjusted to the wastewater source heat pump heating mode. In the wastewater source heat pump heating mode, heating is based on the wastewater source heat pump hot water mode. When understanding this mode, those skilled in the art can refer to Figure 6 In the wastewater source heat pump hot water mode shown, the heat pump unit 310 is turned on, the first valve 342 is closed, the second valve 349 is closed, the third valve 345 is closed, the fourth valve 336 is turned on, the fifth valve 352 is closed, the sixth valve 354 is closed, the seventh valve 365 is closed, the eighth valve 394 is closed, the ninth valve 367 is closed, and the tenth valve 392 is closed. The first pump 323 is turned on, the second pump 333 is turned on, the third pump 347 is turned on, and the fourth pump 363 is turned off. Figure 13 , the sixth pump 384 is opened, and the twelfth valve member 385 is opened. It can be understood that, referring to Figure 13Under the action of the third pump 347, the cold water circulates between the evaporator heat exchange channel, the third pipeline 343, the fresh water heat exchange channel, and the fourth pipeline 346. The heated water in the hot water tank 321 flows through the first pipeline 322 to the condenser heat exchange channel, and then flows back to the hot water tank 321 through the second pipeline 324. The wastewater in the wastewater tank 331 flows through the sixth pipeline 332 to the wastewater heat exchange channel, and is then discharged through the seventh pipeline 335. The circulating cold water and wastewater exchange heat in the wastewater heat exchanger. The wastewater heat exchanger absorbs the wastewater's waste heat to heat the circulating cold water. The circulating cold water releases heat through the evaporator, and the condenser in turn uses the absorbed heat to heat the circulating hot water, allowing the temperature in the hot water tank to continue to rise. In the heating component 380, under the action of the sixth pump 384, the hot water in the hot water tank 321 flows from the eighteenth pipeline 382 through the second air-conditioning heat exchanger 381 to the nineteenth pipeline 383, and then flows back to the hot water tank 321. The second air-conditioning heat exchanger 381 heats the external air, thereby providing heating.

[0089] In this application, the dual-source heat pump hot water system can be controlled and adjusted to the water source heat pump heating mode. In the water source heat pump heating mode, heating is based on the water source heat pump hot water mode. When understanding this mode, those skilled in the art can refer to Figure 7 In the water source heat pump hot water mode shown, the heat pump unit 310 is turned on, the second valve 349 is closed, the third valve 345 is turned on, the fourth valve 336 is closed, the fifth valve 352 is closed, the sixth valve 354 is closed, the seventh valve 365 is closed, the eighth valve 394 is closed, the ninth valve 367 is closed, and the tenth valve 392 is closed. The first pump 323 is turned on, the second pump 333 is turned off, the third pump 347 is turned off, and the fourth pump 363 is turned off. Figure 14 , the sixth pump 384 is opened, and the twelfth valve member 385 is opened. It can be understood that, referring to Figure 14 , new water flows from the new water inlet pipe 341 to the evaporator heat exchange flow channel, and then is discharged through the third pipe 343 and the fifth pipe 344. The heated water in the hot water tank 321 flows through the first pipe 322 to the condenser heat exchange flow channel, and then flows back to the hot water tank 321 through the second pipe 324. The heat pump component uses the new water as a heat source to heat the circulating hot water, causing the temperature in the hot water tank 321 to gradually rise. Specifically, the new water flows through the evaporator, releases heat, and is then discharged. The condenser then heats the circulating hot water with the heat it absorbs, and the temperature of the hot water tank continues to rise. In the heating component 380, under the action of the sixth pump 384, the hot water in the hot water tank 321 flows from the eighteenth pipe 382 through the second air conditioning heat exchanger 381 and then flows to the nineteenth pipe 383, and then returns to the hot water tank 321. The second air conditioning heat exchanger 381 heats the external air, thereby providing heating.

[0090] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A dual-source heat pump hot water system, characterized in that: include A heat pump unit, the heat pump unit comprising a compressor, a condenser, a throttling element and an evaporator forming a refrigerant cycle, the condenser having a condenser heat exchange flow channel, the evaporator having an evaporator heat exchange flow channel, the condenser heat exchange flow channel being provided with a first inlet and a first outlet, the evaporator heat exchange flow channel being provided with a second inlet and a second outlet; A hot water circulation component, the hot water circulation component comprises a hot water tank, a first pipeline and a second pipeline, the hot water tank is provided with a circulation water inlet and a circulation water outlet, the two ends of the first pipeline are respectively connected to the circulation water outlet and the first inlet, the two ends of the second pipeline are respectively connected to the first outlet and the circulation water inlet, the first pipeline or the second pipeline is provided with a first pump to transport the heating water in the hot water tank from the first pipeline to the condenser heat exchange flow channel of the condenser for heating, and then return to the hot water tank from the second pipeline; A wastewater heat exchange component, the wastewater heat exchange component comprising a wastewater heat exchanger, the wastewater heat exchanger having a wastewater heat exchange flow channel and a fresh water heat exchange flow channel for mutually exchanging heat, the wastewater heat exchange flow channel being used to pass wastewater, the wastewater heat exchange flow channel being provided with a third inlet and a third outlet, and the fresh water heat exchange flow channel being provided with a fourth inlet and a fourth outlet; a pipeline connection assembly, the pipeline connection assembly comprising a third pipeline, a fifth pipeline and a new water input pipe, one end of the new water input pipe is a new water inlet, the other end of the new water input pipe is connected to the second inlet, the new water input pipe is provided with a first valve to control the opening and closing of the new water input pipe, the two ends of the third pipeline are respectively connected to the second outlet and the fourth inlet, the fourth outlet is provided with a water replenishment pipeline connected to the first pipeline, the water replenishment pipeline is provided with a second valve to control the opening and closing of the water replenishment pipeline, one end of the fifth pipeline is connected to the third pipeline, the other end of the fifth pipeline is a new water discharge outlet, the fifth pipeline is provided with a third valve to control the opening and closing of the new water discharge outlet; and A water washing component, the water washing component includes an eighth pipeline and a ninth pipeline, one end of the eighth pipeline is connected to the new water flow inlet, the other end of the eighth pipeline is connected to the third outlet, the eighth pipeline is provided with a fifth valve to control the opening and closing of the eighth pipeline, one end of the ninth pipeline is connected to the third inlet, the other end of the ninth pipeline is a flushing drain, and the ninth pipeline is provided with a sixth valve to control the opening and closing of the ninth pipeline.

2. The dual-source heat pump hot water system according to claim 1, characterized in that: The wastewater heat exchange component also includes a wastewater tank for holding wastewater, the wastewater tank is connected to the third outlet through a sixth pipeline, the sixth pipeline is provided with a second pump to introduce wastewater into the wastewater heat exchange flow channel, the fourth outlet is provided with a seventh pipeline connected thereto, the other end of the seventh pipeline is a wastewater discharge outlet, and the seventh pipeline is provided with a fourth valve to control the opening and closing of the wastewater discharge outlet.

3. The dual-source heat pump hot water system according to claim 2, characterized in that: The dual-source heat pump hot water system also includes a drug washing component for performing drug washing on the wastewater heat exchange flow channel, the drug washing component includes a drug water tank and a tenth pipeline, the drug water tank is provided with a drug water outlet and a drug water return, the two ends of the tenth pipeline are respectively connected to the drug water outlet and the third outlet, the tenth pipeline is provided with a fourth pump to transport the drug water in the drug water tank from the tenth pipeline to the wastewater heat exchange flow channel.

4. The dual-source heat pump hot water system according to claim 3, characterized in that: The drug washing component also includes an eleventh pipeline, one end of the eleventh pipeline is connected to the ninth pipeline, thereby connecting to the third inlet, and the other end of the eleventh pipeline is connected to the drug return port so that the drug can flow back from the wastewater heat exchange channel to the drug tank. The eleventh pipeline is provided with a seventh valve to control the opening and closing of the eleventh pipeline.

5. The dual-source heat pump hot water system according to claim 4, characterized in that: The medicine return port is provided with a twelfth pipeline connected with the eighth pipeline, so that new water can be added to the medicine tank from the eighth pipeline and the second pipeline.

6. The dual-source heat pump hot water system according to claim 5, characterized in that: The tenth pipeline is provided with a thirteenth pipeline connected with the second pipeline to connect with the first outlet, and the eleventh pipeline is provided with a fourteenth pipeline connected with the first pipeline to connect with the first inlet, so that the medicine in the medicine tank is transported from the tenth pipeline, the thirteenth pipeline and the second pipeline to the condenser heat exchange flow channel through the fourth pump component, and then flows back to the medicine tank from the fourteenth pipeline and the eleventh pipeline, and the fourteenth pipeline is provided with a ninth valve component to control the opening and closing of the fourteenth pipeline, and the bottom of the medicine tank is provided with a fifteenth pipeline for discharging medicine, and the fifteenth pipeline is provided with a tenth valve component.

7. The dual-source heat pump hot water system according to any one of claims 2 to 6, characterized in that: The pipeline connection assembly also includes a fourth pipeline, the two ends of which are respectively connected to the fourth outlet and the second inlet, and the fourth pipeline is provided with a third pump to transport the new water in the third pipeline to the new water heat exchange channel and then flow to the fourth pipeline.

8. A control method for a dual-source heat pump hot water system, characterized in that: The dual-source heat pump hot water system according to any one of claims 2 to 6 is controlled to be adjusted to a wastewater waste heat utilization water replenishment heating mode, wherein the wastewater waste heat utilization water replenishment heating mode includes a direct heating mode and a circulation heating mode, wherein: The direct heating method of the wastewater residual heat utilization water supply heating mode is as follows: new water flows from the new water input pipe to the evaporator heat exchange flow channel, then flows to the new water heat exchange flow channel through the third pipeline, and then flows to the first pipeline through the water supply pipeline; the new water flowing into the water supply pipeline flows to the condenser heat exchange flow channel, and then flows back to the hot water tank through the second pipeline; the wastewater in the wastewater pool flows to the wastewater heat exchange flow channel through the sixth pipeline, and then is discharged through the seventh pipeline; The circulating heating method of the wastewater waste heat utilization water replenishment heating mode is: new water flows from the new water input pipe to the evaporator heat exchange flow channel, then flows to the new water heat exchange flow channel through the third pipeline, and then flows to the first pipeline through the replenishment water pipeline; the heated water of the hot water tank flows out through the first pipeline, and flows to the condenser heat exchange flow channel together with the new water flowing into the replenishment water pipeline, and then flows back to the hot water tank through the second pipeline; the wastewater in the wastewater pool flows to the wastewater heat exchange flow channel through the sixth pipeline, and then is discharged through the seventh pipeline.

9. A control method for a dual-source heat pump hot water system, characterized in that: The dual-source heat pump hot water system of claim 7 is controlled to be adjusted to a wastewater source heat pump hot water mode or a water source heat pump hot water mode, wherein: The hot water mode of the wastewater source heat pump is as follows: cold water circulates among the evaporator heat exchange flow channel, the third pipeline, the new water heat exchange flow channel, and the fourth pipeline under the action of the third pump; the heated water of the hot water tank flows to the condenser heat exchange flow channel through the first pipeline, and then flows back to the hot water tank through the second pipeline; the wastewater of the wastewater pool flows to the wastewater heat exchange flow channel through the sixth pipeline, and then is discharged through the seventh pipeline; The hot water mode of the water source heat pump is: new water flows from the new water input pipe to the evaporator heat exchange channel, and then is discharged through the third pipeline and the fifth pipeline; the heated water in the hot water tank flows through the first pipeline to the condenser heat exchange channel, and then flows back to the hot water tank through the second pipeline.

10. A control method for a dual-source heat pump hot water system, characterized in that: The dual-source heat pump hot water system according to claim 6 is controlled to be adjusted to a wastewater heat exchanger water washing mode, a wastewater heat exchanger chemical washing mode or a condenser descaling mode, wherein: The water washing mode of the wastewater heat exchanger is: new water flows from the eighth pipeline to the wastewater heat exchange flow channel, and then is discharged from the ninth pipeline; The chemical washing mode of the wastewater heat exchanger is as follows: the chemical in the chemical water tank flows to the wastewater heat exchange flow channel through the tenth pipeline under the action of the fourth pump, and then is discharged from the ninth pipeline or flows back to the chemical water tank from the eleventh pipeline; The condenser descaling mode is as follows: the medicine in the medicine tank flows to the condenser heat exchange channel through the tenth pipeline, the thirteenth pipeline and the second pipeline under the action of the fourth pump, and then flows back to the medicine tank from the first pipeline, the fourteenth pipeline and the eleventh pipeline.

Images