A hot water system

Abstract

This utility model provides a hot water system, comprising: a water tank, a heat pump, and an auxiliary heating mechanism; a first flow channel and a second flow channel respectively connected to the outlet and inlet of the water tank; the first flow channel connected to the inlet of the auxiliary heating mechanism, and the second flow channel connected to the outlet of the auxiliary heating mechanism; a third flow channel connecting the first flow channel to the inlet of the heat pump, and a fourth flow channel connecting the outlet of the heat pump to the first flow channel; a fluid control component, in the first flow channel, guiding water from the first flow channel to the third flow channel, and guiding water from the fourth flow channel to the first flow channel; a first drive mechanism, in the first or second flow channel between the fluid control component and the inlet of the auxiliary heating mechanism, driving water in the first flow channel to flow towards the inlet of the auxiliary heating mechanism; and a second drive mechanism, in the third or fourth flow channel, driving water in the third flow channel to flow towards the heat pump. The hot water system provided by this utility model improves the utilization rate of the heat pump.

Description

Technical Field

[0001] This utility model relates to the field of hot water engineering technology, specifically to a hot water system. Background Technology

[0002] Heat pump technology is a new energy technology that can extract low-grade heat energy from the air, water or soil in nature and provide high-grade heat energy through the work of electricity.

[0003] Heat pumps can be used to heat water in tanks for user consumption. In practical applications, there are situations where the heat pump cannot provide the energy required to heat the water in the tank. In such cases, adding a heat source to heat the tank can ensure the water is heated. One existing technology is a heat pump-based mixed hot water system, such as... Figure 1 As shown, the system includes a heat pump, a heat source, and a water tank. The heat pump and heat source independently heat the water in the tank through their respective flow channels. In actual use, the water tank heats up too quickly after the heat source intervenes, causing the heat pump to shut down prematurely. This shortens the heat pump's operating time, reduces its utilization rate, diminishes the system's cost-saving advantages, and results in poor user satisfaction. Utility Model Content

[0004] In view of the problems in the prior art, this utility model provides a hot water system that can at least partially solve the problems existing in the prior art.

[0005] This utility model proposes a hot water system, comprising:

[0006] Water tanks are used to store and supply hot water;

[0007] A heat pump is used to heat the water in the water tank;

[0008] An auxiliary heating mechanism is used to heat the water in the water tank;

[0009] A first flow channel connects the outlet of the water tank and a second flow channel connects the inlet of the water tank; the first flow channel is connected to the inlet of the auxiliary heating mechanism, and the second flow channel is connected to the outlet of the auxiliary heating mechanism.

[0010] A third flow channel connecting the first flow channel to the inlet of the heat pump, and a fourth flow channel connecting the outlet of the heat pump to the first flow channel.

[0011] A fluid control component, disposed in the first flow channel, can direct water from the first flow channel to the third flow channel, and direct water from the fourth flow channel to the first flow channel;

[0012] A first driving mechanism is disposed in a first or second flow channel between the fluid control component and the water inlet of the auxiliary heating mechanism, for driving the water in the first flow channel to flow to the water inlet of the auxiliary heating mechanism.

[0013] The second drive mechanism is disposed in the third or fourth flow channel and is used to drive the water in the third flow channel to the inlet of the heat pump.

[0014] Furthermore, the hot water system has a first operating mode. When the hot water system operates in the first operating mode, both the first drive mechanism and the second drive mechanism are in operation. The fluid control component guides the water from the first flow channel to the third flow channel and guides the water from the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows to the auxiliary heating mechanism through the fourth flow channel and the first flow channel for heating.

[0015] Furthermore, the hot water system has a second operating mode. When the hot water system is running in the second operating mode, the first drive mechanism is in operation, and the fluid control component guides the water in the first flow channel to the inlet of the auxiliary heating mechanism, so that the water flowing out of the outlet of the water tank flows through the first flow channel to the auxiliary heating mechanism for heating, and the water flowing out of the outlet of the auxiliary heating mechanism flows back to the water tank through the second flow channel.

[0016] Furthermore, the hot water system has a third operating mode. When the hot water system is running in the third operating mode, the first drive mechanism is in operation, and the fluid control component guides the water in the first flow channel to the inlet of the auxiliary heating mechanism, so that the water flowing out of the outlet of the water tank flows through the first flow channel to the auxiliary heating mechanism for heating, and the water flowing out of the outlet of the auxiliary heating mechanism flows back to the water tank through the second flow channel.

[0017] When the second drive mechanism is started, the fluid control component directs the water from the first flow channel to the third flow channel and the water from the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows to the auxiliary heating mechanism through the fourth flow channel and the first flow channel for heating.

[0018] Furthermore, the fluid control component adopts a compact tee or coupling tank.

[0019] Furthermore, the hot water system provided in this embodiment of the present invention also includes:

[0020] A flow regulating device is disposed in the first flow channel or the second flow channel, the second flow channel being connected to the first flow channel via a fifth flow channel. The flow regulating device is used to distribute the water flow rate flowing through the first flow channel to the auxiliary heating mechanism and the water flow rate flowing through the first flow channel to the fifth flow channel.

[0021] Furthermore, the hot water system provided in this embodiment of the present invention also includes:

[0022] A water path switching device is installed in the fourth flow channel, which is connected to the second flow channel via a sixth flow channel. The water path switching device is used to control the water flow in the fourth flow channel to the sixth flow channel or the first flow channel.

[0023] Furthermore, the hot water system has a fourth operating mode. When the hot water system is running in the fourth operating mode, the second drive mechanism is in operation. The water path switching device controls the water in the fourth flow channel to flow to the sixth flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel.

[0024] Furthermore, the hot water system has a fifth operating mode. When the hot water system is running in the fifth operating mode, the second drive mechanism is in operation. The water path switching device controls the water in the fourth flow channel to flow to the second flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump for heating through the first flow channel and the third flow channel, and the water flowing out of the outlet of the heat pump flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel.

[0025] When the first drive mechanism starts to operate, the water circuit switching device disconnects the connection between the sixth flow channel and the fourth flow channel and opens the fourth flow channel. The fluid control component guides the water in the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the heat pump flows through the fourth flow channel and the first flow channel to the auxiliary heating mechanism for heating.

[0026] Furthermore, the hot water system provided in this embodiment of the present invention also includes:

[0027] A first switching valve is used to control the opening and closing of the fourth flow channel, which is connected to the second flow channel through a sixth flow channel. The first switching valve is located between the connection point of the fourth flow channel and the sixth flow channel and between the connection point of the fourth flow channel and the first flow channel.

[0028] The second switching valve is located in the sixth flow channel and is used to control the opening and closing of the sixth flow channel.

[0029] Furthermore, the hot water system has a fourth operating mode. When the hot water system operates in the fourth operating mode, the second drive mechanism is in operation. The first switch valve controls the fourth flow channel to close and the second switch valve controls the sixth flow channel to open, so that the water in the fourth flow channel flows to the sixth flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the water tank outlet flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the heat pump outlet flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel.

[0030] Furthermore, the hot water system has a fifth operating mode. When the hot water system is running in the fifth operating mode, the second drive mechanism is in operation. The first switch valve controls the fourth flow channel to close and the second switch valve controls the sixth flow channel to open, so that the water in the fourth flow channel flows to the sixth flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel.

[0031] The first drive mechanism starts to operate, the first switching valve controls the fourth flow channel to open and the second switching valve controls the sixth flow channel to close, and the fluid control component guides the water in the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the heat pump flows through the fourth flow channel and the first flow channel to the auxiliary heating mechanism for heating.

[0032] Furthermore, the first drive mechanism and / or the second drive mechanism include a water pump.

[0033] Furthermore, the auxiliary heating mechanism includes a heat source and a heat exchanger, wherein the heat exchanger is used to heat the water in the water tank by means of heat exchange, and the heat source is used to provide the energy required for heat exchange.

[0034] Furthermore, the heat exchanger is a plate heat exchanger or a volumetric heat exchanger.

[0035] Furthermore, the water tank can be a closed water tank or an open water tank.

[0036] The hot water system provided in this embodiment includes a water tank for storing and supplying hot water; a heat pump for heating the water in the water tank; an auxiliary heating mechanism for heating the water in the water tank; a first flow channel connecting the outlet of the water tank and a second flow channel connecting the inlet of the water tank; the first flow channel being connected to the inlet of the auxiliary heating mechanism, and the second flow channel being connected to the outlet of the auxiliary heating mechanism; a third flow channel connecting the first flow channel to the inlet of the heat pump, and a fourth flow channel connecting the outlet of the heat pump to the first flow channel; and a fluid control component. The first drive mechanism, located in the first or second flow channel between the fluid control component and the inlet of the auxiliary heating mechanism, drives the water in the first flow channel to flow towards the inlet of the auxiliary heating mechanism. The second drive mechanism, located in the third or fourth flow channel, drives the water in the third flow channel to flow towards the inlet of the heat pump, thereby prioritizing the heating of the water in the tank by the heat pump and improving the utilization rate of the heat pump. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0038] Figure 1 This is a schematic diagram of the structure of a heat pump-based hybrid hot water system in the prior art.

[0039] Figure 2 This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0040] Figure 3 This is a schematic diagram of water flow in the first operating mode of a hot water system provided in an embodiment of the present invention.

[0041] Figure 4 This is a schematic diagram of water flow in the second operating mode of a hot water system provided in an embodiment of the present invention.

[0042] Figure 5A This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0043] Figure 5B This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0044] Figure 6This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0045] Figure 7 This is a schematic diagram of water flow in the fourth operating mode of a hot water system provided in an embodiment of this utility model.

[0046] Figure 8 This is a schematic diagram of water flow in the fifth operating mode of a hot water system provided in an embodiment of this utility model.

[0047] Figure 9 This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0048] Figure 10 This is a schematic diagram of water flow in the fourth operating mode of a hot water system provided in an embodiment of this utility model.

[0049] Figure 11 This is a schematic diagram of water flow in the fifth operating mode of a hot water system provided in an embodiment of this utility model.

[0050] Figure 12A This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0051] Figure 12B This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0052] Figure 13 This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Water tank; 2. Heat pump; 3. Auxiliary heating mechanism; 4. First flow channel; 5. Second flow channel; 6. Third flow channel; 7. Fourth flow channel; 8. Fluid control component; 9. First drive mechanism; 10. Second drive mechanism; 11. Flow regulating device; 12. Fifth flow channel; 13. Water circuit switching device; 14. Sixth flow channel; 15. First switching valve; 16. Second switching valve; 31. Heat source; 32. Heat exchanger. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of this utility model and their descriptions are used to explain this utility model, but are not intended to limit this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0056] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product or device.

[0057] Figure 2 This is a schematic diagram of the hot water system provided in the first embodiment of this utility model, as shown below. Figure 2 As shown, the hot water system provided in this embodiment of the present invention includes:

[0058] Water tank 1 is used for storing and supplying hot water;

[0059] Heat pump 2 is used to heat the water in water tank 1;

[0060] The auxiliary heating mechanism 3 is used to heat the water in the water tank 1;

[0061] A first flow channel 4 connects to the outlet of water tank 1 and a second flow channel 5 connects to the inlet of water tank 1; the first flow channel 4 is connected to the inlet of auxiliary heating mechanism 3 and the second flow channel 5 is connected to the outlet of auxiliary heating mechanism 3.

[0062] The third flow channel 6 connects the first flow channel 4 to the inlet of the heat pump 2, and the fourth flow channel 7 connects the outlet of the heat pump 2 to the first flow channel.

[0063] The fluid control component 8 is disposed in the first flow channel 4, which can guide the water in the first flow channel 4 to the third flow channel 6, and guide the water in the fourth flow channel 7 to the first flow channel 4;

[0064] The first driving mechanism 9 is disposed in the first flow channel 4 or the second flow channel 5 between the fluid control component 8 and the water inlet of the auxiliary heating mechanism 3, and is used to drive the water in the first flow channel 4 to flow to the water inlet of the auxiliary heating mechanism 3.

[0065] The second drive mechanism 10 is located in the third flow channel 6 or the fourth flow channel 7 and is used to drive the water in the third flow channel 6 to the inlet of the heat pump 2.

[0066] Specifically, water tank 1 stores hot water, and water tank 1 can be connected to an external circulation pipe. Water points are set on the circulation pipe, and users use hot water from water tank 1 at the water points.

[0067] Water in water tank 1 flows into the first flow channel 4 through the outlet of water tank 1. Under the control of fluid control component 8, it is introduced into the third flow channel 6. Water in the third flow channel 6 flows to the inlet of heat pump 2 under the drive of the second drive mechanism 10, where heat pump 2 heats the incoming water. Water flowing out of the outlet of heat pump 2 flows into the fourth flow channel 7 and, under the control of fluid control component 8, is introduced into the first flow channel 4. Water in the first flow channel 4 flows to the inlet of auxiliary heating mechanism 3 under the drive of the first drive mechanism 9, where auxiliary heating mechanism 3 heats the incoming water. Water flowing out of the outlet of auxiliary heating mechanism 3 can flow back into water tank 1 from the inlet of water tank 1 through the second flow channel 5.

[0068] The water tank 1 can be an open or closed tank, selected according to actual needs; this embodiment of the invention does not limit its type. The heat pump 2 can be an air source heat pump, ground source heat pump, water source heat pump, solar heat pump, dual-source heat pump, etc., selected according to actual needs; this embodiment of the invention does not limit its type. The auxiliary heating mechanism 3 can have an internal heat exchanger or not, selected according to actual needs; this embodiment of the invention does not limit its type. The auxiliary heating mechanism 3 includes, but is not limited to, gas-fired hot water boilers, gas-fired vacuum boilers, gas-fired steam boilers, gas-fired steam generators, biomass boilers, electric boilers, electrode boilers, storage gas water heaters, storage electric water heaters, vacuum tube solar water heaters, flat-plate solar water heaters, water source heat pumps, ground source heat pumps, etc. The fluid control component 8 can be a compact tee or a coupling tank, selected according to actual needs; this embodiment of the invention does not limit its type. The first drive mechanism 9 and the second drive mechanism 10 can be water pumps.

[0069] The hot water system provided in this embodiment includes a water tank for storing and supplying hot water; a heat pump for heating the water in the water tank; an auxiliary heating mechanism for heating the water in the water tank; a first flow channel connecting the outlet of the water tank and a second flow channel connecting the inlet of the water tank; the first flow channel being connected to the inlet of the auxiliary heating mechanism, and the second flow channel being connected to the outlet of the auxiliary heating mechanism; a third flow channel connecting the first flow channel to the inlet of the heat pump, and a fourth flow channel connecting the outlet of the heat pump to the first flow channel; and a fluid control component. A first drive mechanism, located in the first or second flow channel between the fluid control component and the inlet of the auxiliary heating mechanism, drives the water in the first flow channel to flow towards the inlet of the auxiliary heating mechanism. A second drive mechanism, located in the third or fourth flow channel, drives the water in the third flow channel towards the inlet of the heat pump, enabling priority heating of the water in the tank by the heat pump, thus improving the utilization rate of the heat pump. Furthermore, in cases of insufficient heat pump supply, the auxiliary heating mechanism heats the water in the tank, improving the stability of the hot water supply.

[0070] Based on the above embodiments, the hot water system further includes a first operating mode. When the hot water system operates in the first operating mode, both the first drive mechanism 9 and the second drive mechanism 10 are in operation. The fluid control component 8 guides the water from the first flow channel 4 to the third flow channel 6 and the water from the fourth flow channel 7 to the first flow channel 4, so that the water flowing out of the outlet of the water tank 1 flows to the heat pump 2 for heating through the first flow channel 4 and the third flow channel 6, and the water flowing out of the outlet of the heat pump 2 flows to the auxiliary heating mechanism 3 for heating through the fourth flow channel 7 and the first flow channel 4.

[0071] Specifically, the hot water system provided in this embodiment of the present invention has a first operating mode in which the water in the water tank is heated sequentially by the heat pump 2 and the auxiliary heating mechanism 3. Figure 3 This is a schematic diagram of water flow in the first operating mode of a hot water system provided in an embodiment of this utility model, as shown below. Figure 3As shown, the direction of the arrow indicates the direction of water flow. In the first operating mode, the first drive mechanism 9 and the second drive mechanism 10 are activated; water in the water tank 1 enters the first flow channel 4 through the outlet, and the fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6; the water in the third flow channel 6 flows into the heat pump 2 for heating under the drive of the second drive mechanism 10; the heated water flows from the outlet of the heat pump 2 into the fourth flow channel 7; the fluid control component 8 then guides the water in the fourth flow channel 7 to the first flow channel 4 between the fluid control component 8 and the inlet of the auxiliary heating mechanism 3; the first drive mechanism 9 drives the water in the first flow channel 4 to flow into the auxiliary heating mechanism 3 for heating; the reheated water flows out from the outlet of the auxiliary heating mechanism 3 and flows back to the water tank 1 through the second flow channel 5 from the inlet of the water tank 1.

[0072] In the first operating mode, the water in the tank is first heated to an intermediate temperature by the heat pump 2, and then heated to the target temperature by the auxiliary heating mechanism 3. This effectively improves the heating efficiency of the heat pump while reducing the load on the auxiliary heating mechanism, so as to achieve the optimal operating cost of the system.

[0073] Based on the above embodiments, the hot water system further has a second operating mode. When the hot water system is running in the second operating mode, the first drive mechanism 9 is in operation, and the fluid control component 8 guides the water in the first flow channel 4 to the inlet of the auxiliary heating mechanism 3, so that the water flowing out of the outlet of the water tank 1 flows through the first flow channel 4 to the auxiliary heating mechanism 3 for heating, and the water flowing out of the outlet of the auxiliary heating mechanism 3 flows back to the water tank 1 through the second flow channel 5.

[0074] Specifically, the hot water system provided in this embodiment of the present invention has a second operating mode, in which the water in the water tank 1 is heated separately by the auxiliary heating mechanism 3. Figure 4 This is a schematic diagram of water flow in the second operating mode of a hot water system provided in an embodiment of this utility model, as shown below. Figure 4 As shown, the arrows indicate the direction of water flow. The third flow channel 6 and the fourth flow channel 7 are represented by dashed lines and do not have arrows indicating the direction of water flow, indicating that no water flows through them in the second operating mode. In the second operating mode, the first drive mechanism 9 is activated, while the second drive mechanism 10 is not activated. Water in the water tank 1 enters the first flow channel 4 through the outlet of the water tank 1. The fluid control component 8 guides the water in the first flow channel 4 to the inlet of the auxiliary heating mechanism 3. After being heated by the auxiliary heating mechanism 3, the water flows out from the outlet of the auxiliary heating mechanism 3, and then flows back to the water tank 1 through the second flow channel 5 from the inlet of the water tank 1.

[0075] In one embodiment, when the heat pump 2 fails, is under maintenance, or is outside the operating range of the heat pump 2, the water in the water tank 1 can be heated by the auxiliary heating mechanism 3 to ensure the stability of the hot water supply.

[0076] Based on the above embodiments, the hot water system further has a third operating mode. When the hot water system is running in the third operating mode, the first drive mechanism 9 is in operation, and the fluid control component 8 guides the water in the first flow channel 4 to the inlet of the auxiliary heating mechanism 3, so that the water flowing out of the outlet of the water tank 1 flows through the first flow channel 4 to the auxiliary heating mechanism 3 for heating, and the water flowing out of the outlet of the auxiliary heating mechanism 3 flows back to the water tank 1 through the second flow channel 5.

[0077] The second drive mechanism 10 starts to operate, and the fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6 and the water in the fourth flow channel 7 to the first flow channel 4, so that the water flowing out of the outlet of the water tank 1 flows to the heat pump 2 through the first flow channel 4 and the third flow channel 6 for heating, and the water flowing out of the outlet of the heat pump 2 flows to the auxiliary heating mechanism 3 through the fourth flow channel 7 and the first flow channel 4 for heating.

[0078] Specifically, the hot water system provided in this embodiment of the present invention has a third operating mode. First, the water in the water tank 1 is heated separately by the auxiliary heating mechanism 3, and then the heat pump 2 is started to heat the water in the water tank 1, thus achieving sequential heating of the water in the water tank 1 by the heat pump 2 and the auxiliary heating mechanism 3. In the third operating mode, the first drive mechanism 9 is started first, while the second drive mechanism 10 is not started. The water in the water tank 1 enters the first flow channel 4 through the outlet of the water tank 1. The fluid control component 8 guides the water in the first flow channel 4 to the inlet of the auxiliary heating mechanism 3. After being heated by the auxiliary heating mechanism 3, the water flows out from the outlet of the auxiliary heating mechanism 3, and then flows back to the water tank 1 through the second flow channel 5 from the inlet of the water tank 1. The water flow diagram of the hot water system at this time is as follows: Figure 4 As shown.

[0079] The second drive mechanism 10 is activated, and the fluid control component 8 directs the water in the first flow channel 4 to the third flow channel 6. Driven by the second drive mechanism 10, the water in the third flow channel 6 flows into the heat pump 2 for heating. The heated water flows from the outlet of the heat pump 2 into the fourth flow channel 7. The fluid control component 8 then directs the water in the fourth flow channel 7 back to the first flow channel 4 between the fluid control component 8 and the inlet of the auxiliary heating mechanism 3. The first drive mechanism 9 then drives the water in the first flow channel 4 to flow into the auxiliary heating mechanism 3 for heating. The heated water flows out from the outlet of the auxiliary heating mechanism 3 and returns to the water tank 1 through the second flow channel 5 via the inlet of the water tank 1. The water flow diagram of the hot water system at this time is as follows: Figure 3 As shown.

[0080] In one embodiment, when rapid heating of the water in tank 1 is required, the auxiliary heating mechanism 3 can be used to heat the water in tank 1 first. If the auxiliary heating mechanism 3 cannot meet the heating requirements of tank 1 during the heating process, the heat pump 2 will be activated to heat the water in tank 1, so as to ensure the stability and continuity of the system's water supply.

[0081] Based on the above embodiments, the fluid control component 8 further adopts a compact tee or a coupling tank. The coupling tank can also be called a decoupling tank, hydraulic pressure divider, hydraulic balancing tank, hydraulic separator, mixing tank, or mixing cylinder.

[0082] Figure 5A This is a schematic diagram of a hot water system provided in one embodiment of the present invention. Figure 5B This is a structural schematic diagram of a hot water system provided in an embodiment of the present invention, such as 5A and Figure 5B As shown, the hot water system provided in this embodiment of the present invention also includes a flow regulating device 11, wherein:

[0083] The flow regulating device 11 is disposed in the first flow channel 4 or the second flow channel 5. The second flow channel 5 is connected to the first flow channel 4 through the fifth flow channel 12. The flow regulating device 11 is used to distribute the water flow rate from the first flow channel 4 to the auxiliary heating mechanism 3 and the water flow rate from the first flow channel 4 to the fifth flow channel 12.

[0084] Specifically, the flow rate regulating device 11 can distribute the water flow from the first flow channel 4 to the auxiliary heating mechanism 3 and the water flow to the fifth flow channel 12. The water in the fifth flow channel 12 flows to the second flow channel 5 without needing to be heated by the auxiliary heating mechanism 3, and can be regulated when the water temperature at the outlet of the auxiliary heating mechanism 3 is high. The flow rate regulating device 11 can be a flow regulating valve.

[0085] In one embodiment, when the hot water system is in the first operating mode, if the water temperature at the inlet of the water tank 1 meets the requirements, the flow rate of the water flowing from the first flow channel 4 to the auxiliary heating mechanism 3 and the flow rate of the water flowing from the first flow channel 4 to the fifth flow channel 12 are distributed by the flow rate regulating device 11, which can reduce the load output on the auxiliary heating mechanism 3 and reduce operating costs.

[0086] In one embodiment, when the hot water system is in the second operating mode, if the water temperature at the inlet of the water tank 1 rises too quickly, the flow rate of water flowing from the first flow channel 4 to the auxiliary heating mechanism 3 can be reduced and the flow rate of water flowing from the first flow channel 4 to the fifth flow channel 12 can be increased by the flow rate regulating device 11, so as to reduce the water temperature at the inlet of the water tank 1 and achieve the purpose of quickly regulating the water temperature at the inlet of the water tank 1.

[0087] Figure 6 This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention, as shown below. Figure 6 As shown, based on the above embodiments, the hot water system provided in this embodiment further includes a water circuit switching device 13, wherein:

[0088] The water path switching device 13 is installed in the fourth flow channel 7, which is connected to the second flow channel 5 through the sixth flow channel 14. The water path switching device 13 is used to control the water flow in the fourth flow channel 7 to the sixth flow channel 14 or the first flow channel 4.

[0089] Specifically, the water flow direction of the water flowing from the outlet of the heat pump 2 into the fourth channel 7 can be changed by the water switching device 13, so that the water in the fourth channel 7 flows into the sixth channel 14, and then into the second channel 5, and flows back to the water tank 1 through the inlet of the water tank 1. Alternatively, the water in the fourth channel 7 can flow into the first channel 4. The water switching device 13 can be a three-way valve.

[0090] The water circuit switching device 13 and the sixth flow channel 14 enable the heat pump to heat the water in the water tank independently.

[0091] Based on the above embodiments, the hot water system further includes a fourth operating mode. When the hot water system operates in the fourth operating mode, the second drive mechanism 10 is in operation, the water switching device 13 controls the water in the fourth flow channel 7 to flow to the sixth flow channel 14, and the fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6, so that the water flowing out of the outlet of the water tank 1 flows to the heat pump 2 for heating through the first flow channel 4 and the third flow channel 6, and the water flowing out of the outlet of the heat pump 2 flows back to the water tank 1 through the fourth flow channel 7, the sixth flow channel 14 and the second flow channel 5.

[0092] Specifically, the hot water system provided in this embodiment of the present invention has a fourth operating mode, in which the water in the water tank 1 is heated separately by the heat pump 2. Figure 7 This is a schematic diagram of water flow in the fourth operating mode of a hot water system provided in an embodiment of this utility model, as shown below. Figure 7 As shown, the arrows indicate the direction of water flow. The fourth flow channel 7 between the water path switching device 13 and the fluid control component 8, the first flow channel 4 between the fluid control component 8 and the inlet of the auxiliary heating mechanism 3, and the second flow channel 5 between the connection of the second flow channel 5 and the sixth flow channel 14 and the outlet of the auxiliary heating mechanism 3 are indicated by dashed lines. The dashed lines do not have arrows indicating the direction of water flow, indicating that no water flows through them in the fourth operating mode. In the fourth operating mode, the second drive mechanism 10 is activated, while the first drive mechanism 9 is not activated. Water in the water tank 1 enters the first flow channel 4 through the outlet. The fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6. Driven by the second drive mechanism 10, the water in the third flow channel 6 flows into the heat pump 2 for heating. The heated water flows from the outlet of the heat pump 2 into the fourth flow channel 7. The water path switching device 13 controls the water in the fourth flow channel 7 to flow towards the sixth flow channel 14, and then flows through the second flow channel 5 back to the water tank 1 through the inlet.

[0093] In one embodiment, when the water heated by the heat pump 2 is sufficient to meet the usage requirements, the heat pump 2 can be used alone to heat the water in the water tank 1, reducing the use of the auxiliary heating mechanism 3 and lowering system operating costs.

[0094] Based on the above embodiments, the hot water system further has a fifth operating mode. When the hot water system is running in the fifth operating mode, the second drive mechanism 10 is in operation, the water circuit switching device 13 controls the water in the fourth flow channel 7 to flow to the second flow channel 5, and the fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6, so that the water flowing out of the outlet of the water tank 1 flows to the heat pump 2 for heating through the first flow channel 4 and the third flow channel 6, and the water flowing out of the outlet of the heat pump 2 flows back to the water tank 1 through the fourth flow channel 7, the sixth flow channel 14 and the second flow channel 5.

[0095] The first drive mechanism 9 starts to operate, the water circuit switching device 13 disconnects the connection between the sixth flow channel 14 and the fourth flow channel 7, and opens the fourth flow channel 7. The fluid control component 8 guides the water in the fourth flow channel 7 to the first flow channel 4, so that the water flowing out of the outlet of the heat pump 2 flows through the fourth flow channel 7 and the first flow channel 4 to the auxiliary heating mechanism 3 for heating.

[0096] Specifically, the hot water system provided in this embodiment of the present invention has a fifth operating mode. First, the heat pump 2 heats the water in the tank alone, and then the auxiliary heating mechanism 3 heats the water flowing out of the heat pump 2, thus achieving sequential heating of the water in the tank through the heat pump 2 and the auxiliary heating mechanism 3. In the fifth operating mode, the second drive mechanism 10 is activated first, while the first drive mechanism 9 is not activated. Water in the tank 1 enters the first flow channel 4 through the outlet, and the fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6. Driven by the second drive mechanism 10, the water in the third flow channel 6 flows into the heat pump 2 for heating. The heated water flows from the outlet of the heat pump 2 into the fourth flow channel 7. The water path switching device 13 controls the water in the fourth flow channel 7 to flow into the sixth flow channel 14, and then flows through the second flow channel 5 back to the tank 1 through the inlet. The water flow diagram of the hot water system at this time is as follows: Figure 7 As shown.

[0097] The first drive mechanism 9 is activated, and the water switching device 13 disconnects the connection between the sixth flow channel 14 and the fourth flow channel 7, while opening the fourth flow channel 7. This allows water flowing from the outlet of the heat pump 2 into the fourth flow channel 7 to flow towards the fluid control component 8. The fluid control component 8 guides the water from the fourth flow channel 7 to the first flow channel 4, so that the water flowing out of the outlet of the heat pump 2 flows through the fourth flow channel 7 and the first flow channel 4 to the auxiliary heating mechanism 3 for heating. The reheated water flows out from the outlet of the auxiliary heating mechanism 3 and returns to the water tank 1 through the second flow channel 5 via the inlet of the water tank 1. The water flow diagram of the hot water system at this time is as follows: Figure 8As shown, the direction of the arrow indicates the direction of water flow. The sixth flow channel 14 is represented by a dashed line and has no arrow indicating the direction of water flow, indicating that no water flows through it in the fifth operating mode.

[0098] Figure 9 This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention, as shown below. Figure 9 As shown, based on the above embodiments, the hot water system provided in this embodiment further includes a first switching valve 15 and a second switching valve 16, wherein:

[0099] The first switching valve 15 is used to control the opening and closing of the fourth flow channel 7. The fourth flow channel 7 is connected to the second flow channel 5 through the sixth flow channel 14. The first switching valve 15 is located between the connection between the fourth flow channel 7 and the sixth flow channel 14 and the connection between the fourth flow channel 7 and the first flow channel 4.

[0100] The second switching valve 16 is located in the sixth flow channel 14 and is used to control the opening and closing of the sixth flow channel 14.

[0101] The first switching valve 15 and the second switching valve 16 can be two-way valves. When used together, the first switching valve 15 and the second switching valve 16 can enable the heat pump to heat the water in the water tank independently.

[0102] Based on the above embodiments, the hot water system further has a fourth operating mode. When the hot water system is running in the fourth operating mode, the second drive mechanism 10 is in operation, the first switch valve 15 controls the fourth flow channel 7 to close and the second switch valve 16 controls the sixth flow channel 14 to open, so that the water in the fourth flow channel 7 flows to the sixth flow channel 14. The fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6, so that the water flowing out of the outlet of the water tank 1 flows to the heat pump 2 for heating through the first flow channel 4 and the third flow channel 6, and the water flowing out of the outlet of the heat pump 2 flows back to the water tank 1 through the fourth flow channel 7, the sixth flow channel 14 and the second flow channel 5.

[0103] Specifically, the hot water system provided in this embodiment of the present invention has a fourth operating mode, in which the water in the water tank 1 is heated separately by the heat pump 2. Figure 10 This is a schematic diagram of water flow in the fourth operating mode of a hot water system provided in an embodiment of this utility model, as shown below. Figure 10As shown, the arrows indicate the direction of water flow. The fourth flow channel 7 between the first switching valve 15 and the fluid control component 8, the first flow channel 4 between the fluid control component 8 and the inlet of the auxiliary heating mechanism 3, and the second flow channel 5 between the connection point of the second flow channel 5 and the sixth flow channel 14 and the outlet of the auxiliary heating mechanism 3 are indicated by dashed lines. The flow channels indicated by dashed lines do not have arrows indicating the direction of water flow, indicating that no water flows through them in the fourth operating mode. In the fourth operating mode, the second drive mechanism 10 is activated, while the first drive mechanism 9 is not activated. Water in water tank 1 enters the first flow channel 4 through the outlet. The fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6. The water in the third flow channel 6 flows into the heat pump 2 for heating under the drive of the second drive mechanism 10. The heated water flows from the outlet of the heat pump 2 into the fourth flow channel 7. The first switch valve 15 shuts off the fourth flow channel 7, preventing the water in the fourth flow channel 7 from flowing to the fluid control component 8. The second switch valve 16 opens the sixth flow channel 14, allowing the water in the fourth flow channel 7 to flow to the sixth flow channel 14. Then, the water flows through the second flow channel 5 and returns to the water tank 1 through the inlet of the water tank 1.

[0104] Based on the above embodiments, the hot water system further has a fifth operating mode. When the hot water system is running in the fifth operating mode, the second drive mechanism 10 is in operation, the first switch valve 15 controls the fourth flow channel 7 to close and the second switch valve 16 controls the sixth flow channel 14 to open, so that the water in the fourth flow channel 7 flows to the sixth flow channel 14. The fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6, so that the water flowing out of the outlet of the water tank 1 flows to the heat pump 2 for heating through the first flow channel 4 and the third flow channel 6, and the water flowing out of the outlet of the heat pump 2 flows back to the water tank 1 through the fourth flow channel 7, the sixth flow channel 14 and the second flow channel 5.

[0105] The first drive mechanism 9 starts to operate, the first switch valve 15 controls the fourth flow channel 7 to open and the second switch valve 16 controls the sixth flow channel 14 to close, and the fluid control component 8 guides the water in the fourth flow channel 7 to the first flow channel 4, so that the water flowing out of the outlet of the heat pump 2 flows through the fourth flow channel 7 and the first flow channel 4 to the auxiliary heating mechanism 3 for heating.

[0106] Specifically, the hot water system provided in this embodiment of the present invention has a fifth operating mode. First, the heat pump 2 heats the water in the water tank alone, and then the auxiliary heating mechanism 3 heats the water flowing out of the heat pump 2, thus achieving sequential heating of the water in the water tank through the heat pump 2 and the auxiliary heating mechanism 3. In the fifth operating mode, the second drive mechanism 10 is activated first, while the first drive mechanism 9 is not activated. Water in the water tank 1 enters the first flow channel 4 through the outlet of the water tank 1. The fluid control component 8 guides the water in the first flow channel 4 to the third flow channel 6. The water in the third flow channel 6, driven by the second drive mechanism 10, flows into the heat pump 2 for heating. The heated water flows from the outlet of the heat pump 2 into the fourth flow channel 7. The first switch valve 15 closes the fourth flow channel 7, preventing the water in the fourth flow channel 7 from flowing to the fluid control component 8, and the second switch valve 16 opens the sixth flow channel 14, causing the water in the fourth flow channel 7 to flow into the sixth flow channel 14, and then flows through the second flow channel 5 back to the water tank 1 through the inlet. At this time, the water flow diagram of the hot water system is as follows: Figure 10 As shown.

[0107] The first drive mechanism 9 is activated, the second switch valve 16 closes the sixth flow channel 14, and the first switch valve 15 opens the fourth flow channel 7, causing the water in the fourth flow channel 7 to flow to the fluid control component 8. The fluid control component 8 guides the water in the fourth flow channel 7 to the first flow channel 4, so that the water flowing out of the outlet of the heat pump 2 flows through the fourth flow channel 7 and the first flow channel 4 to the auxiliary heating mechanism 3 for heating. The water flow diagram of the hot water system at this time is as follows: Figure 11 As shown, the direction of the arrow indicates the direction of water flow. The sixth flow channel 14 between the second switch valve 16 and the second flow channel 5 is represented by a dashed line and has no arrow indicating the direction of water flow, indicating that no water flows through in the fifth operating mode.

[0108] Based on the above embodiments, the first drive mechanism 9 and / or the second drive mechanism 10 further include a water pump. The water pump may be a booster pump.

[0109] Figure 12A This is a schematic diagram of a hot water system provided in one embodiment of the present invention. Figure 12B This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention, as shown below. Figure 12A and Figure 12B As shown, based on the above embodiments, the auxiliary heating mechanism 3 further includes a heat source 31 and a heat exchanger 32. The heat exchanger 32 is used to heat the water in the water tank 1 by means of heat exchange, and the heat source 31 is used to provide the energy required for heat exchange. The heat exchanger 32 can be a plate heat exchanger or a volumetric heat exchanger, whichever is selected according to actual needs. This embodiment of the utility model does not limit the choice.

[0110] In one embodiment, such as Figure 12AAs shown, heat exchanger 32 adopts a plate heat exchanger, which has high heat transfer efficiency and small footprint.

[0111] In one embodiment, such as Figure 12B As shown, heat exchanger 32 is a volumetric heat exchanger. The volumetric heat exchanger has its own heat storage capacity and has both heat exchange and heat storage functions. It can be applied to scenarios that require a continuous supply of hot water and have high requirements for water supply stability.

[0112] Based on the above embodiments, the water tank 1 can be either a closed water tank or an open water tank, depending on actual needs. This utility model embodiment does not limit the choice.

[0113] Figure 13 This is a schematic diagram of the structure of a hot water system provided in an embodiment of the present invention, as shown below. Figure 13 As shown, based on the above embodiments, the hot water system provided by this utility model embodiment further includes a water tank 1, a heat pump 2, an auxiliary heating mechanism 3, a first flow channel 4, a second flow channel 5, a third flow channel 6, a fourth flow channel 7, a fluid control component 8, a first drive mechanism 9, a second drive mechanism 10, a flow regulating device 11, a fifth flow channel 12, a water circuit switching device 13, and a sixth flow channel 14, wherein:

[0114] The first flow channel 4 connects the outlet of the water tank 1 and the inlet of the auxiliary heating mechanism 3; the second flow channel 5 connects the inlet of the water tank 1 and the outlet of the auxiliary heating mechanism 3; the third flow channel 6 connects the first flow channel 4 and the inlet of the heat pump 2; the fourth flow channel 7 connects the outlet of the heat pump 2 and the first flow channel 4.

[0115] The fluid control component 8 is disposed in the first flow channel 4 and is used to guide the water in the first flow channel 4 to the third flow channel 6 and to guide the water in the fourth flow channel 7 to the first flow channel 4; the first drive mechanism 9 is disposed in the first flow channel 4 between the fluid control component 8 and the inlet of the auxiliary heating mechanism 3 and is used to drive the water in the first flow channel 4 to flow to the inlet of the auxiliary heating mechanism 3; the second drive mechanism 10 is disposed in the third flow channel 6 and is used to drive the water in the third flow channel 6 to flow to the inlet of the heat pump 2.

[0116] The flow regulating device 11 is disposed in the second flow channel 5, which is connected to the first flow channel 4 through the fifth flow channel 12. The flow regulating device 11 is used to distribute the water flow rate from the first flow channel 4 to the auxiliary heating mechanism 3 and the water flow rate from the first flow channel 4 to the fifth flow channel 12.

[0117] The water path switching device 13 is installed in the fourth flow channel 7, which is connected to the second flow channel 5 through the sixth flow channel 14. The water path switching device 13 is used to control the water flow in the fourth flow channel 7 to the sixth flow channel 14 or the first flow channel 4.

[0118] Figure 13The hot water system shown has a first operating mode, a second operating mode, a third operating mode, a fourth operating mode, and a fifth operating mode. The specific implementation process is detailed above and will not be repeated here.

[0119] The hot water system provided in this embodiment of the invention improves the utilization rate and heating efficiency of the heat pump by first heating the water in the tank with a heat pump and then heating the water flowing out of the heat pump with an auxiliary heating mechanism. Since the auxiliary heating mechanism is only used when the heat pump is insufficient, the use of the auxiliary heating mechanism is reduced, thus lowering system operating costs.

[0120] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0121] In the description of this specification, the references to terms such as "an embodiment," "a specific embodiment," "some embodiments," "for example," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0122] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hot water system, characterized in that, include: Water tanks are used to store and supply hot water; A heat pump is used to heat the water in the water tank; An auxiliary heating mechanism is used to heat the water in the water tank; A first flow channel connects the outlet of the water tank and a second flow channel connects the inlet of the water tank; the first flow channel is connected to the inlet of the auxiliary heating mechanism, and the second flow channel is connected to the outlet of the auxiliary heating mechanism. A third flow channel connecting the first flow channel to the inlet of the heat pump, and a fourth flow channel connecting the outlet of the heat pump to the first flow channel. A fluid control component, disposed in the first flow channel, can direct water from the first flow channel to the third flow channel, and direct water from the fourth flow channel to the first flow channel; A first driving mechanism is disposed in a first or second flow channel between the fluid control component and the water inlet of the auxiliary heating mechanism, for driving the water in the first flow channel to flow to the water inlet of the auxiliary heating mechanism. The second drive mechanism is disposed in the third or fourth flow channel and is used to drive the water in the third flow channel to the inlet of the heat pump.

2. The hot water system according to claim 1, characterized in that, The hot water system has a first operating mode. When the hot water system is running in the first operating mode, both the first drive mechanism and the second drive mechanism are in operation. The fluid control component directs the water from the first flow channel to the third flow channel and directs the water from the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows to the auxiliary heating mechanism through the fourth flow channel and the first flow channel for heating.

3. The hot water system according to claim 1, characterized in that, The hot water system has a second operating mode. When the hot water system is running in the second operating mode, the first drive mechanism is in operation. The fluid control component guides the water in the first flow channel to the inlet of the auxiliary heating mechanism, so that the water flowing out of the outlet of the water tank flows through the first flow channel to the auxiliary heating mechanism for heating, and the water flowing out of the outlet of the auxiliary heating mechanism flows back to the water tank through the second flow channel.

4. The hot water system according to claim 1, characterized in that, The hot water system has a third operating mode. When the hot water system is running in the third operating mode, the first drive mechanism is in operation. The fluid control component guides the water in the first flow channel to the inlet of the auxiliary heating mechanism, so that the water flowing out of the outlet of the water tank flows through the first flow channel to the auxiliary heating mechanism for heating, and the water flowing out of the outlet of the auxiliary heating mechanism flows back to the water tank through the second flow channel. When the second drive mechanism is started, the fluid control component directs the water from the first flow channel to the third flow channel and the water from the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows to the auxiliary heating mechanism through the fourth flow channel and the first flow channel for heating.

5. The hot water system according to claim 1, characterized in that, The fluid control component is a compact tee or a coupling tank.

6. The hot water system according to claim 1, characterized in that, Also includes: A flow regulating device is disposed in the first flow channel or the second flow channel, the second flow channel being connected to the first flow channel via a fifth flow channel. The flow regulating device is used to distribute the water flow rate flowing through the first flow channel to the auxiliary heating mechanism and the water flow rate flowing through the first flow channel to the fifth flow channel.

7. The hot water system according to claim 1, characterized in that, Also includes: A water path switching device is installed in the fourth flow channel, which is connected to the second flow channel via a sixth flow channel. The water path switching device is used to control the water flow in the fourth flow channel to the sixth flow channel or the first flow channel.

8. The hot water system according to claim 7, characterized in that, The hot water system has a fourth operating mode. When the hot water system is running in the fourth operating mode, the second drive mechanism is in operation. The water path switching device controls the water in the fourth flow channel to flow to the sixth flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the water tank outlet flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the heat pump outlet flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel.

9. The hot water system according to claim 7, characterized in that, The hot water system has a fifth operating mode. When the hot water system is running in the fifth operating mode, the second drive mechanism is in operation. The water path switching device controls the water in the fourth flow channel to flow to the second flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel. When the first drive mechanism starts to operate, the water circuit switching device disconnects the connection between the sixth flow channel and the fourth flow channel and opens the fourth flow channel. The fluid control component guides the water in the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the heat pump flows through the fourth flow channel and the first flow channel to the auxiliary heating mechanism for heating.

10. The hot water system according to claim 1, characterized in that, Also includes: A first switching valve is used to control the opening and closing of the fourth flow channel, which is connected to the second flow channel through a sixth flow channel. The first switching valve is located between the connection point of the fourth flow channel and the sixth flow channel and between the connection point of the fourth flow channel and the first flow channel. The second switching valve is located in the sixth flow channel and is used to control the opening and closing of the sixth flow channel.

11. The hot water system according to claim 10, characterized in that, The hot water system has a fourth operating mode. When the hot water system is running in the fourth operating mode, the second drive mechanism is in operation. The first switch valve controls the fourth flow channel to close and the second switch valve controls the sixth flow channel to open, so that the water in the fourth flow channel flows to the sixth flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel.

12. The hot water system according to claim 10, characterized in that, The hot water system has a fifth operating mode. When the hot water system is running in the fifth operating mode, the second drive mechanism is in operation. The first switch valve controls the fourth flow channel to close and the second switch valve controls the sixth flow channel to open, so that the water in the fourth flow channel flows to the sixth flow channel. The fluid control component guides the water in the first flow channel to the third flow channel, so that the water flowing out of the outlet of the water tank flows to the heat pump through the first flow channel and the third flow channel for heating, and the water flowing out of the outlet of the heat pump flows back to the water tank through the fourth flow channel, the sixth flow channel and the second flow channel. The first drive mechanism starts to operate, the first switching valve controls the fourth flow channel to open and the second switching valve controls the sixth flow channel to close, and the fluid control component guides the water in the fourth flow channel to the first flow channel, so that the water flowing out of the outlet of the heat pump flows through the fourth flow channel and the first flow channel to the auxiliary heating mechanism for heating.

13. The hot water system according to claim 1, characterized in that, The first drive mechanism and / or the second drive mechanism includes a water pump.

14. The hot water system according to claim 1, characterized in that, The auxiliary heating mechanism includes a heat source and a heat exchanger. The heat exchanger is used to heat the water in the water tank by means of heat exchange, and the heat source is used to provide the energy required for heat exchange.

15. The hot water system according to claim 14, characterized in that, The heat exchanger is either a plate heat exchanger or a volumetric heat exchanger.

16. The hot water system according to any one of claims 1 to 15, characterized in that, The water tank can be a closed water tank or an open water tank.

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