Integrated multifunctional water tank system and heat pump system

Abstract

The utility model belongs to the technical field of air conditioner heat pumps, and particularly relates to an integrated multifunctional water tank system and a heat pump system. The water path fitting comprises a first group of connecting pipelines, a second group of connecting pipelines and a third group of connecting pipelines; the first group of connecting pipelines enables the heat source to be communicated with the water inlet end of the coupling energy storage water tank and / or the water inlet end of the domestic hot water tank through a three-way valve for switching; the second group of connecting pipelines are connected and arranged among the domestic hot water tank, the hot water using terminal and the total water replenishing end of the water tank system; the third group of connecting pipelines are connected with the coupling energy storage water tank and the heat exchange terminal; in the utility model, the plurality of water tanks and the waterway fittings are integrated into a whole, so that the installation is more convenient, installation personnel only need to install and connect terminal equipment, more installation cost of the terminal is saved, and meanwhile, multi-dimensional energy conservation is further realized.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning heat pump technology, specifically relating to an integrated multi-functional water tank system and a heat pump system. Background Technology

[0002] Heat pump water heating systems, as a highly efficient and energy-saving hot water supply technology, have been widely used in residential and commercial buildings. A heat pump system is usually composed of an independent hot water tank, an energy storage tank, and decentralized water circuit accessories (such as circulation pumps, valves, filters, etc.). The basic functions are achieved through factory pre-assembly or on-site assembly. During operation, it mainly relies on the heat pump unit to provide the heat source and transfers the heat to the domestic hot water tank or air conditioning terminal equipment through circulation pipelines.

[0003] However, existing heat pump water heating systems require the assembly of multiple independent components (such as heat pump water tank, energy storage water tank, valves, pipes, etc.) on the installation site, resulting in a cumbersome and time-consuming installation process. Furthermore, they mostly adopt a single temperature output mode, which cannot meet the differentiated temperature requirements of different types of terminal equipment such as radiators and underfloor heating pipes.

[0004] There are also instances where heat pump hot water tanks and coupled energy storage tanks are combined to form products. However, the installation and connection methods of coupled energy storage tanks are limited. Although coupled energy storage tanks can play a role in energy storage and balancing water conditions, it is difficult to meet the comprehensive matching of the energy-saving characteristics of the heat pump system with the heat insulation and energy-saving characteristics of the coupled energy storage tank under different ambient temperatures, the outlet water of the heat pump unit, the water inside the coupled energy storage tank, and the heat-using terminals, in various scenarios. This is to achieve a multi-dimensional variable energy-saving effect on the basis of the original energy saving. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides an integrated multi-functional water tank system and a heat pump system. Through innovative design, it addresses the deficiencies of existing technologies, providing the industry with an efficient and easy-to-install solution, solving the problem of a single temperature output mode, and further achieving multi-dimensional energy saving.

[0006] One aspect of this utility model provides an integrated multi-functional water tank system, including an integrated domestic hot water tank, a coupled energy storage tank, and water circuit accessories;

[0007] The water system fittings include a first set of connecting pipes, a second set of connecting pipes, and a third set of connecting pipes, and each connecting pipe is equipped with a pipe connection port for installing terminal equipment;

[0008] The first set of connecting pipes connects the coupled energy storage water tank, the domestic hot water tank, and the heat source;

[0009] The first set of connecting pipes includes a switching three-way valve, which is configured to connect the heat source to the inlet of the coupled energy storage tank and / or the domestic hot water tank.

[0010] The second set of connecting pipes is installed between the domestic hot water tank and the hot water user terminal, and the main water supply terminal of the tank system;

[0011] The third set of connecting pipes connects the coupled energy storage water tank to the heat exchange terminal.

[0012] In one embodiment of this utility model, the first set of connecting pipes includes a primary cycle input pipe and a primary cycle output pipe;

[0013] The second set of connecting pipes includes a domestic hot water pipe, a cold water return circulation pipe, and a tap water supply pipe. The domestic hot water pipe and the cold water return circulation pipe are connected to the hot water usage terminal, and the tap water supply pipe is connected to the main water supply terminal of the water tank system.

[0014] The third set of connecting pipes includes a first heat exchanger water supply pipe and a secondary circulation main return pipe, or the third set of connecting pipes includes a first heat exchanger water supply pipe, a second heat exchanger pipe module, and a secondary circulation main return pipe.

[0015] The system also includes one or more of the following: an energy-saving adjustment module, an electric auxiliary heating module, and a water replenishment safety module.

[0016] In one embodiment of this utility model, the energy-saving adjustment module is connected and disposed between the switching three-way valve and the coupled energy storage water tank;

[0017] The energy-saving adjustment module includes: an energy-saving mode adjustment three-way valve, a first energy-saving input pipeline, and a second energy-saving mode input pipeline;

[0018] The energy-saving mode regulating three-way valve is connected to the switching three-way valve;

[0019] The first energy-saving input pipeline is connected between the energy-saving mode regulating three-way valve and the coupled energy storage water tank;

[0020] The second energy-saving mode input pipeline is connected between the energy-saving mode regulating three-way valve and the first heat exchanger water supply pipe.

[0021] In one embodiment of this utility model, the electric auxiliary heating module is disposed on the primary circulation input pipe;

[0022] The electric auxiliary heating module includes a pipe-type electric auxiliary heater and an exhaust valve. The pipe-type electric auxiliary heater is located at one end of the primary circulation input pipe and connected to it, and is used to perform secondary heating on the hot water in the primary circulation input pipe when it is turned on. The exhaust valve is located at the top of the pipe-type electric auxiliary heater.

[0023] In one embodiment of this utility model, the water replenishment safety module includes a bypass pipe for the tap water replenishment pipe and a safety water replenishment valve assembly;

[0024] One end of the bypass pipeline is connected to the middle of the tap water supply pipeline, and the other end is connected to the heat source supply side supply pipeline.

[0025] The safety water supply valve assembly is installed on the water supply pipeline on the heat source supply side. The safety water supply valve assembly has an anti-backflow structure to prevent the circulating water flowing through the heat source side from flowing back into the domestic hot water tank.

[0026] The safety water supply valve assembly is an automatic water supply valve with anti-backflow design, or the safety water supply valve assembly is a manual ball valve and a water circuit check valve that cooperate with each other.

[0027] In one embodiment of this utility model, one end of the anti-cold water return circulation pipe (10) is connected to the pipeline in front of the water outlet control valve of the hot water user terminal outside the multi-functional water tank system, and the other end is connected to the inside of the domestic hot water tank. A circulation pump is provided on the outside of the anti-cold water return circulation pipe to form an anti-cold water circulation loop between the domestic hot water tank and the hot water user terminal.

[0028] In one embodiment of this utility model, the second heat exchanger pipeline module includes a second heat exchanger water supply pipe, a mixing three-way valve, and a second heat exchanger pipeline circulation pump.

[0029] The second heat exchanger pipeline circulation pump is connected to the second heat exchanger water supply pipe;

[0030] One end of the water supply pipe of the second heat exchanger is connected to the secondary circulation main return pipe through the mixing three-way valve;

[0031] Wherein, when the heat exchange terminal is a heating terminal, the first heat exchanger water supply pipe is connected to the high-temperature heating area of ​​the heating terminal, and the second heat exchanger water supply pipe is connected to the low-temperature heating area of ​​the heating terminal; or, when the heat exchange terminal is a cooling terminal, the first heat exchanger water supply pipe is connected to the low-temperature area of ​​the cooling terminal, and the second heat exchanger water supply pipe is connected to the high-temperature area of ​​the cooling terminal.

[0032] A first heat exchanger pipeline circulation pump is installed on the first heat exchanger water supply pipe for flow control of the separate circulation pipeline of the first heat exchanger water supply pipe.

[0033] In one embodiment of this utility model, the domestic hot water tank is provided with a water tank heating coil, the inlet of the water tank heating coil is connected to the primary circulation input pipe, and the outlet of the water tank heating coil is connected to the primary circulation output pipe.

[0034] The coupled energy storage tank is provided with a first inlet, a first outlet, a second inlet, and a second outlet. The first inlet and the second outlet are located on the same side of the coupled energy storage tank, and the first outlet and the second inlet are located on the other side of the coupled energy storage tank.

[0035] The primary circulation input pipe is connected to a switching three-way valve and then to the first inlet; the primary circulation output pipe is connected to the second outlet.

[0036] The first heat exchanger water supply pipe is connected to the first water outlet, and the secondary circulation main return water pipe is connected to the second water inlet.

[0037] In one embodiment of this utility model, the integrated multifunctional water tank system further includes one or more of the following:

[0038] The water pressure gauge and safety valve assembly are installed in the secondary circulation main return water pipe;

[0039] A water filter is installed on the main water pipe of the first heat exchanger supply pipe and the second heat exchanger pipeline module, or separately on the first heat exchanger supply pipe.

[0040] A water expansion tank is installed on the primary circulation output pipe or the primary circulation input pipe;

[0041] A water tank pressure relief valve is installed on the domestic hot water pipe or on the top of the domestic hot water tank;

[0042] A vacuum prevention valve for the water tank is installed on the top of the domestic hot water tank or on the domestic hot water pipe;

[0043] A water tank receiving tray is located below the integrated domestic hot water tank, the coupled energy storage tank, and the water circuit fittings.

[0044] In one embodiment of this utility model, a heat pump system includes an integrated multi-functional water tank system as described in any of the above embodiments.

[0045] The integrated multifunctional water tank system and heat pump system provided by this utility model can achieve the following technical effects:

[0046] 1. The heat pump hot water tank is integrated with the coupled energy storage tank and water circuit accessories. At the same time, a three-way valve is used to connect the heat source with the inlet of the coupled energy storage tank and / or the domestic hot water tank. Since the water circuit components, pipes, multiple water tanks, etc. are all integrated into one unit, it is easier for installers to install. Installers only need to install the terminal equipment, saving more installation costs for the terminal.

[0047] 2. The components within the water tank system feature a modular design, including any one or more of the following: energy-saving adjustment module, electric auxiliary heating module, water replenishment safety module, anti-cold water module, and second heat exchanger piping module. These can be configured individually or in combination according to actual needs, thus meeting the diverse usage scenarios and requirements of different users at a lower cost.

[0048] 3. The water replenishment system of the domestic hot water tank 1 shares a tap water replenishment pipe with the primary circulation loop system of the heat source supply side through the water replenishment safety module. The safety water replenishment valve assembly adopts an anti-backflow setting to ensure that the circulating water in the primary circulation loop system of the heat source supply side will not flow back into the water replenishment system of the domestic hot water tank, thereby making domestic water safer, more hygienic and reliable. Furthermore, the design of the safety water replenishment valve assembly can be either an automatic water replenishment valve anti-backflow design or a manual ball valve + water circuit check valve anti-backflow design.

[0049] 4. The energy-saving adjustment module selects the bypass pipeline by adjusting the three-way valve to adjust the energy-saving mode: the first energy-saving input pipeline or the second energy-saving input pipeline. This can meet the needs of different water temperatures of the heat pump host outlet, the coupled energy storage tank, and the heat-using terminals under different ambient temperatures. It can comprehensively match the energy-saving characteristics of the heat pump system with the heat preservation and energy-saving characteristics of the coupled balance water tank in multiple scenarios. In addition to the basic energy saving of the coupled energy-saving water tank itself, it can further achieve the effect of multi-dimensional variable energy saving.

[0050] 5. The use of a common water filter (optional, such as a magnetic mud filter) in the first and second heat exchanger supply pipe modules further ensures the service life of the circulating water pump, saving costs while improving reliability. Furthermore, the inclusion of a drip tray at the bottom of the domestic hot water tank and the coupled energy storage tank effectively prevents water leakage caused by loose connections within the system, thus ensuring better reliability. Attached Figure Description

[0051] 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 the structures shown in these drawings without creative effort.

[0052] Figure 1 A schematic diagram showing the structure of the integrated multifunctional water tank system of this utility model;

[0053] Figure 2 A schematic diagram of a water tank system without an energy-saving regulating valve assembly, representing one embodiment of this utility model;

[0054] Figure 3 A schematic diagram of a water tank system without an energy-saving regulating valve assembly, representing another embodiment of this utility model;

[0055] Figure 4 A schematic diagram of a water tank system without a second heat exchanger piping module, representing one embodiment of this utility model.

[0056] Figure 5 This is a schematic diagram of a water tank system structure that uses a manual ball valve and a check valve for the safety water supply valve assembly of this utility model.

[0057] Figure 6 This is a schematic diagram of the water tank system structure of the present invention, which does not have an electric auxiliary heating module.

[0058] The annotations in the attached figures are explained as follows:

[0059] 1: Domestic hot water tank; 1-1: Water tank heating coil;

[0060] 2: Coupled energy storage water tank; a: First inlet; b: First outlet; c: Second inlet; d: Second outlet;

[0061] 3: First set of connecting pipes;

[0062] 4: Second set of connecting pipes;

[0063] 5: Third set of connecting pipes;

[0064] 6: Three-way valve for switching;

[0065] 7: Primary cycle input tube;

[0066] 8: Output tube for primary cycle;

[0067] 9: Domestic hot water pipes;

[0068] 10: Anti-cold water return circulation pipe;

[0069] 11: Water supply pipe;

[0070] 12: Water supply pipe for the first heat exchanger;

[0071] 13: Secondary circulation main return water pipe;

[0072] 14: Energy-saving adjustment module; 14-1: Energy-saving mode adjustment three-way valve; 14-2: First energy-saving input pipeline; 14-3: Second energy-saving mode input pipeline;

[0073] 15: Electric auxiliary heating module; 15-1: Pipeline electric auxiliary heating heater; 15-2: Exhaust valve;

[0074] 16: Bypass pipe;

[0075] 17: First heat exchanger piping circulation pump;

[0076] 18: Second heat exchanger piping module; 18-1: Second heat exchanger water supply pipe; 18-2: Mixing three-way valve; 18-3: Second heat exchanger piping circulation pump;

[0077] 19: Safety water supply valve assembly; 19-1: Automatic water supply valve; 19-2: Manual ball valve; 19-3: Water circuit check valve;

[0078] 20: Water pressure gauge and safety valve assembly;

[0079] 21: Water filter;

[0080] 22: Water expansion tank;

[0081] 23: Water tank pressure relief valve;

[0082] 24: Anti-vacuum valve for water tank;

[0083] 25: Water tank drip tray. Detailed Implementation

[0084] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0085] Example 1

[0086] Please refer to Figures 1-6One embodiment of this utility model provides an integrated multi-functional water tank system, including an integrated domestic hot water tank 1, a coupled energy storage tank 2, and water circuit accessories;

[0087] The water system fittings include a first set of connecting pipes 3, a second set of connecting pipes 4 and a third set of connecting pipes 5, and each connecting pipe is equipped with a pipe connection port for installing terminal equipment.

[0088] The first set of connecting pipes 3 connects the coupled energy storage water tank 2, the domestic hot water tank 1 and the heat source;

[0089] The first set of connecting pipes 3 includes a switching three-way valve 6, which is configured to connect the heat source to the inlet of the coupled energy storage tank 2 and / or the domestic hot water tank 1.

[0090] The second set of connecting pipes 4 is connected and installed between the domestic hot water tank 1 and the hot water user terminal and the main water supply terminal of the tank system;

[0091] The third set of connecting pipes 5 connects the coupled energy storage water tank 2 to the heat exchange terminal.

[0092] Furthermore, the first set of connecting pipes 3 includes a primary cycle input pipe 7 and a primary cycle output pipe 8;

[0093] The second set of connecting pipes 4 includes a domestic hot water pipe 9, a cold water return circulation pipe 10, and a tap water supply pipe 11. The domestic hot water pipe 9 and the cold water return circulation pipe 10 are connected to the hot water usage terminal, and the tap water supply pipe 11 is connected to the main water supply terminal of the water tank system.

[0094] The third set of connecting pipes 5 includes a first heat exchanger water supply pipe 12 and a secondary circulation main return water pipe 13, or the third set of connecting pipes 5 includes a first heat exchanger water supply pipe 12, a second heat exchanger pipe module 18 and a secondary circulation main return water pipe 13.

[0095] The system also includes one or more of the following: energy-saving adjustment module 14, electric auxiliary heating module 15, and water replenishment safety module.

[0096] The energy-saving adjustment module 14 is connected and disposed between the switching three-way valve 6 and the coupled energy storage water tank 2;

[0097] The energy-saving adjustment module 14 includes: an energy-saving mode adjustment three-way valve 14-1, a first energy-saving input pipeline 14-2, and a second energy-saving mode input pipeline 14-3;

[0098] The energy-saving mode regulating three-way valve 14-1 is connected to the switching three-way valve 6;

[0099] The first energy-saving input pipeline 14-2 is connected between the energy-saving mode regulating three-way valve 14-1 and the coupled energy storage water tank 2;

[0100] The second energy-saving mode input pipe 14-3 is connected between the energy-saving mode regulating three-way valve 14-1 and the first heat exchanger water supply pipe 12.

[0101] Understandably, the connecting pipes of an integrated multi-functional water tank system include three sets. One set is the heat source connection end: connected to the heat pump or (and) other heat sources through the primary circulation output port and the primary circulation input port on the heat source supply side. The second set is the hot water usage end: domestic hot water is obtained through the domestic hot water pipe 9. Optionally, a bypass line with a circulation pump can be connected near the domestic hot water outlet and connected to the domestic hot water anti-cold water return circulation pipe 10 interface, ensuring that hot water is always discharged, thus improving the comfort of hot water use. Additionally, a tap water supply pipe 11 is provided to replenish the water in the domestic hot water tank 1. The third set is the input and output pipe interface end on the air conditioning (heating) side: including the first heat exchanger supply pipe 12 (high-temperature water pipe for heating, low-temperature water pipe for cooling), the second heat exchanger supply pipe 18-1 (low-temperature water pipe for heating, high-temperature water pipe for cooling), and the secondary circulation main return pipe 13.

[0102] The integrated multi-functional water tank system provided in this embodiment can achieve the following technical effects:

[0103] 1. The heat pump hot water tank is integrated with the coupled energy storage tank 2 and water circuit accessories. At the same time, the three-way valve 6 is used to connect the heat source with the inlet of the coupled energy storage tank 2 and / or the domestic hot water tank 1. Since the water circuit components, pipes, multiple water tanks, etc. are all integrated into one, it is easier for installers to install. Installers only need to install the terminal equipment, saving more installation costs for the terminal.

[0104] 2. The components within the water tank system have a modular design concept, including any one or more of the following: energy-saving adjustment module 14, electric auxiliary heating module 15, and water replenishment safety module. They can be configured individually or in combination according to actual needs, thus meeting the usage scenarios of different actual users at a lower cost.

[0105] In one embodiment of this utility model, the electric auxiliary heating module 15 is disposed on the primary circulation input pipe 7;

[0106] The electric auxiliary heating module 15 includes a pipe-type electric auxiliary heater 15-1 and an exhaust valve 15-2. The pipe-type electric auxiliary heater 15-1 is located at one end of the primary circulation input pipe 7 and connected thereto, and is used to perform secondary heating on the hot water in the primary circulation input pipe 7 when it is turned on. The exhaust valve 15-2 is located at the top of the pipe-type electric auxiliary heater 15-1.

[0107] The integrated multi-functional water tank system provided in this embodiment can achieve the following technical effects:

[0108] In one embodiment of the present invention, the water replenishment safety module includes a bypass pipe 16 of the tap water replenishment pipe 11 and a safety water replenishment valve assembly 19;

[0109] One end of the bypass pipe 16 is connected to the middle of the tap water supply pipe 11, and the other end is connected to the heat source supply side supply pipe. Understandably, the heat source supply side supply pipe is a section of the primary circulation output pipe 8. When the water flow in the primary circulation loop is insufficient due to leakage at the water joint or expansion and leakage (pressure relief) caused by water temperature changes, the water flow in the primary circulation loop can be supplemented to the primary circulation loop through the cooperation of the tap water supply pipe 11, the safety supply valve assembly 19 and the bypass pipe 16, so as to ensure the stable operation of the water tank system.

[0110] One end of the tap water supply pipe 11 is connected to the main water supply end of the water tank system (such as a tap water supply pipe, a purified water supply tank, or a direct drinking water supply pipe, which can be selected according to the actual scenario of domestic water use), and the other end is connected to the inside of the domestic hot water tank 1.

[0111] The safety water supply valve assembly 19 is installed on the water supply pipeline on the heat source supply side. The safety water supply valve assembly 19 has an anti-backflow structure to prevent the circulating water flowing through the heat source from flowing back into the domestic hot water tank 1.

[0112] The safety water supply valve assembly 19 is an automatic water supply valve 19-1 with anti-backflow design, or the safety water supply valve assembly 19 is a manual ball valve 19-2 and a water circuit check valve 19-3 that cooperate with each other.

[0113] The integrated multi-functional water tank system provided in this embodiment can achieve the following technical effects:

[0114] The water replenishment system of the domestic hot water tank 1 shares a tap water replenishment pipe 11 with the water replenishment of the primary circulation loop system on the heat source supply side through the water replenishment safety module. The safety water replenishment valve assembly 19 adopts an anti-backflow setting to ensure that the circulating water in the primary circulation loop system on the heat source supply side will not flow back into the water replenishment system of the domestic hot water tank 1, thereby making domestic water safer, more hygienic and reliable. Furthermore, the design of the safety water replenishment valve assembly 19 can be optionally an automatic water replenishment valve 19-1 with anti-backflow design or a manual ball valve 19-2 + water circuit check valve 19-3 with anti-backflow design.

[0115] In one embodiment of this utility model, the anti-cold water module includes an anti-cold water return interface and an anti-cold water return circulation pipe 10. The anti-cold water return interface is installed on the domestic hot water tank 1. One end of the anti-cold water return circulation pipe (10) is connected to a pipeline installed outside the multi-functional water tank system in front of the water outlet control valve of the hot water user terminal, and the other end is connected to the inside of the domestic hot water tank. A circulation pump is installed on the outside of the anti-cold water return circulation pipe 10 to form an anti-cold water circulation loop between the domestic hot water tank 1 and the hot water user terminal.

[0116] In one embodiment of the present invention, the second heat exchanger pipeline module 18 includes a second heat exchanger water supply pipe 18-1, a mixing three-way valve 18-2, and a second heat exchanger pipeline circulation pump 18-3.

[0117] The second heat exchanger pipeline circulation pump 18-3 is connected to the second heat exchanger water supply pipe 18-1;

[0118] One end of the second heat exchanger water supply pipe 18-1 is connected to the secondary circulation main return water pipe 13 through the mixing three-way valve 18-2.

[0119] Specifically, when the heat exchange terminal is operating for heating, the first heat exchanger water supply pipe 12 is connected to the high-temperature area of ​​the terminal during heating, and the second heat exchanger water supply pipe 18-1 is connected to the low-temperature area of ​​the terminal during heating; or, when the heat exchanger terminal is operating for cooling, the first heat exchanger water supply pipe 12 is connected to the low-temperature area of ​​the terminal during cooling, and the second heat exchanger water supply pipe 18-1 is connected to the high-temperature area of ​​the terminal during cooling.

[0120] The integrated multi-functional water tank system provided in this embodiment can achieve the following technical effects:

[0121] The energy-saving adjustment module 14 selects the bypass pipeline by adjusting the three-way valve 14-1 to adjust the energy-saving mode: the first energy-saving input pipeline 14-2 or the second energy-saving mode input pipeline 14-4. This can meet the comprehensive matching of the energy-saving characteristics of the heat pump system and the heat insulation and energy-saving characteristics of the coupled balance water tank under different water temperatures of the heat pump host outlet, the coupled energy storage water tank, and the heat-using terminal at different ambient temperatures. In this way, in addition to the basic energy saving of the coupled energy-saving water tank itself, it can also achieve the effect of multi-dimensional variable energy saving.

[0122] In one embodiment of this utility model, a water tank heating coil is provided inside the domestic hot water tank 1. The inlet of the water tank heating coil is connected to the primary circulation input pipe 7, and the outlet of the water tank heating coil is connected to the primary circulation output pipe 8.

[0123] The coupled energy storage tank 2 is provided with a first inlet a, a first outlet b, a second inlet c, and a second outlet d. The first inlet a and the second outlet d are located on the same side of the coupled energy storage tank 2, and the first outlet b and the second inlet c are located on the other side of the coupled energy storage tank 2.

[0124] The primary circulation input pipe 7 is connected to the switching three-way valve 6 and then to the first inlet a; the primary circulation output pipe 8 is connected to the second outlet d;

[0125] The first heat exchanger water supply pipe 12 is connected to the first water outlet b, and the secondary circulation main return water pipe 13 is connected to the second water inlet c.

[0126] In one embodiment of this utility model, the integrated multifunctional water tank system further includes one or more of the following:

[0127] The water pressure gauge and safety valve assembly are installed in the secondary circulation main return water pipe 13;

[0128] A water filter is installed on the main water pipe connecting the first heat exchanger supply pipe 12 and the second heat exchanger pipeline module 18, or separately on the first heat exchanger supply pipe 12; a water expansion tank is installed on the primary circulation output pipe 8 or the primary circulation input pipe 7; and a water tank pressure relief valve is installed on the domestic hot water pipe 9 or on the top of the domestic hot water tank 1.

[0129] A water tank anti-vacuum valve is installed on the top of the domestic hot water tank 1 or on the domestic hot water pipe 9;

[0130] The water tank receiving tray is located below the integrated domestic hot water tank 1, the coupled energy storage tank 2, and the water circuit accessories.

[0131] Understandably, the purpose of the anti-vacuum valve in a water tank is to effectively protect the tank interior when the internal pressure is too low, preventing damage caused by suction from inside the tank.

[0132] The purpose of the water filter is to prevent blockage of the first heat exchanger pipeline circulation pump 17 and the second heat exchanger pipeline circulation pump 18-3, thereby extending their service life.

[0133] The purpose of the water pressure gauge and safety valve assembly is to detect the water pressure in the secondary system water circuit and to perform pressure relief.

[0134] The purpose of the water tank pressure relief valve is to relieve pressure when the water temperature in the tank changes. When the water temperature is too high or the water pressure in the tank is too high, the water tank pressure relief valve can be used to protect the water tank from damage.

[0135] The purpose of the water tank drip tray: There are too many external joints on the water tank. The purpose of installing this valve is to prevent water leakage at the water connection points of the water tank system, which could cause indoor flooding.

[0136] Example 2

[0137] When the system is selected to produce hot water:

[0138] Hot water enters from the primary circulation inlet on the heat source supply side. Optionally, it is further heated by the electric auxiliary heating module 15. The heated hot water then passes through the switching three-way valve 6. Since the current system is in hot water production mode, the switching three-way valve 6 switches to the domestic hot water tank 1 side. The heated hot water enters the water tank heating coil 1-1 inside the domestic hot water tank 1, heating the water inside the domestic hot water tank 1 outside the water tank heating coil 1-1 to meet the conditions for domestic hot water. At this time, the heated hot water in the water tank heating coil 1-1 is cooled and flows back to the primary circulation outlet on the heat source supply side, completing the hot water production function. It should be noted that the water flow is carried out by a circulating water pump outside the heat source connection end, and is not installed in the water tank system. Of course, in one embodiment, the circulating water pump can also be installed in the water tank system and placed inside the heat source connection end (either the primary circulation inlet or the primary circulation outlet on the heat source supply side).

[0139] When a user needs hot water, hot water is discharged from the domestic hot water pipe 9. When an external domestic hot water anti-cold water return circulation pump and pipe are connected, the pipe can be connected to the domestic hot water anti-cold water return circulation pipe 10 interface to prevent cold water output when using water. After hot water is used, water is replenished through the tap water supply pipe 11 interface.

[0140] Example 3

[0141] When the system is selected as air conditioning heating:

[0142] Hot water enters from the primary circulation inlet of the heat source supply side. Optionally, it is further heated by the electric auxiliary heating module 15. The heated hot water then passes through the switching three-way valve 6. Since the current system is in air conditioning and heating mode, the switching three-way valve 6 switches to the lower coupling energy storage tank 2 side. When the system is equipped with the energy-saving adjustment module 14, the heated hot water can be adjusted according to factors such as the temperature of the primary circulation inlet of the heat source supply side in air conditioning and heating mode (i.e., the total outlet water temperature of the heat pump host), the temperature in the coupling energy storage tank 2, or the total inlet / outlet water temperature at its terminal side, and the usage scenario of the terminal temperature zone. It can be directly connected to the inlet a of the coupling energy storage tank 2, or it can bypass the e end and then connect to the f connection point outside the output port b of the coupling energy storage tank 2.

[0143] When the energy-saving regulating module 14 is directly connected to input port a of the coupled energy storage water tank 2, after premixing in the energy storage water tank, it is then output through input port b of the energy storage water tank. This method can be applied in, but is not limited to, the following situations:

[0144] 1) When the terminal is in a multi-temperature zone (containing the first heat exchanger pipeline and the second heat exchanger pipeline and having different temperature requirements), there are dual water pumps 18-3 and 18-4 running at the back end, which is difficult to match with the flow rate of the primary circulation water pump of the heat pump host.

[0145] 2) The temperature of the energy storage tank is low;

[0146] 3) The terminal does not need to store too much heat, such as the low heat demand of the underfloor heating terminal;

[0147] When the energy-saving regulating module 14 is directly connected to terminal e, it bypasses the premixing process of the energy storage tank and is directly connected to the external connection point f of the output port b. This method can be applied in situations including, but not limited to:

[0148] 1) When the terminal is a single type of terminal (single temperature zone, only the terminal containing the first type of heat exchanger piping exists or is used);

[0149] 2) The return water temperature at the end is high or the temperature of the energy storage tank is high;

[0150] 3) When the terminal unit is just starting up and needs to quickly acquire heat;

[0151] 4) When the terminal water pump can be stopped, and only the water pump of the heat pump unit needs to be running;

[0152] The selection of the above methods mainly considers the power consumption of the source-balanced heat pump host, the energy-saving performance of the coupled energy storage balance tank, and the power of the water pump, so that the overall power consumption is in the optimal state by adjusting the energy-saving regulating valve. For example, when the water temperature in the coupled energy storage balance tank is high, the return water temperature of the heat pump host is also high, and the power consumption of the compressor system will increase. At this time, the energy-saving mode regulating three-way valve 14-1 is switched to the e end and directly connected to the f connection point outside the b end of the output port of the coupled energy storage tank 2, without entering the mixed water of the coupled energy storage tank. In this way, the return water temperature is reduced to a certain extent, and the terminal water pump can also be stopped, so only one main water pump needs to run. At this time, the energy-saving effect will be further achieved.

[0153] Example 4

[0154] When the system is set to air conditioning cooling:

[0155] Cold water enters from the primary circulation inlet of the cold source supply side and optionally passes through the electric auxiliary heating module 15. At this time, the electric auxiliary heating of the pipeline is not turned on. The cold water then passes through the switching three-way valve 6. Since the current system is selected as the air conditioning cooling operation mode, the switching three-way valve 6 is switched to the lower coupling energy storage tank 2 side. When the system is equipped with the energy-saving adjustment module 14, the cold water can be selected and adjusted according to factors such as the temperature of the primary circulation inlet of the cold source supply side in the air conditioning cooling mode (i.e., the total outlet water temperature of the heat pump host), the temperature in the coupling energy storage tank 2 or the total inlet / outlet water temperature of its terminal side, and the usage scenario of the terminal temperature zone. It can be directly connected to the inlet a of the coupling energy storage tank 2, or the switching three-way valve 6 can be switched to the e end and then directly connected to the f connection point outside the output port b of the coupling energy storage tank 2.

[0156] Similarly, the selection of the above methods mainly considers the power consumption of the source-balanced heat pump unit, the energy-saving performance of the coupled energy storage balance tank, and the power of the water pump, so that the overall power consumption is in an optimal state by adjusting the energy-saving regulating valve. This further achieves the effect of energy saving.

[0157] The cold water from the outlet of the coupled energy storage tank 2 is divided into two paths after passing through the water filter. One path passes through the first heat exchanger pipeline circulation pump 17 of the first heat exchanger supply pipe 12 at the end of the low-temperature zone (cooling) and enters the end of the low-temperature zone (cooling). The other path passes through the pipeline assembly of the second heat exchanger pipeline module 18 in the high-temperature zone (cooling). The pipeline assembly in the high-temperature zone includes a mixing three-way valve 18-2 and a second heat exchanger pipeline circulation pump 18-3. The function of the mixing three-way valve 18-2 in the high-temperature zone (cooling) is to switch the opening of the mixing three-way valve 18-2 to the internal circulation side composed of the end of the high-temperature zone (cooling) and part of the pipeline when the end of the high-temperature zone (cooling) is about to reach the target temperature, and gradually block the flow of cold water from the water filter. This achieves the flow change between the high and low temperature zones to better meet the actual needs of different types of terminals (Note: For example, the terminal can be a floor heating system with a high water temperature requirement, or a fan coil unit with a low water temperature requirement, which is convenient for control and is also a conventional method). The piping components for the low-temperature heating (or high-temperature cooling) terminal area under this function are optional. Specific illustrations are provided in the following embodiments. Terminal return water enters the multi-functional water tank system from the secondary circulation main return water pipe 13, then flows through the return water inlet c of the coupled energy storage water tank 2 into the energy storage water tank, and then flows out through the return water outlet d of the coupled energy storage water tank 2, finally exiting the system from the primary circulation outlet on the cold source supply side. This completes the cooling function.

[0158] It should be noted that the water flow is divided into primary side (water circulation before the coupled energy storage tank 2): the power source of the primary side is the same as when heating water, which is carried out by the circulating water pump outside the heat source connection end, and is not set in the water tank system. Of course, in one embodiment, the circulating water pump can also be set in the water tank system and placed inside the heat (cold) source connection end; the power source of the secondary side (water circulation after the coupled energy storage tank 2) is the first heat exchanger pipeline circulation pump 17 at the end of the low temperature zone (when cooling) and the second heat exchanger pipeline circulation pump 18-3 with the second heat exchanger pipeline module or function (if optional).

[0159] Example 5

[0160] The hot water from the outlet of the coupled energy storage tank 2 is divided into two paths after passing through a water filter. One path flows through the circulation pump 18-4 of the first heat exchanger at the end of the high-temperature heating zone (or low-temperature cooling zone) and then enters the high-temperature heating (or low-temperature cooling) terminal. The other path flows through the piping components of the low-temperature heating (or high-temperature cooling) terminal area under the temperature zoning function. The piping components of the low-temperature heating (or high-temperature cooling) terminal area under the temperature zoning function include the mixing three-way valve 18-2 of the low-temperature heating (or high-temperature cooling) terminal area of ​​the temperature zoning system and the second heat exchanger of the low-temperature heating (or high-temperature cooling) terminal area under the temperature zoning system. The function of the mixing three-way valve 18-2 in the low-temperature terminal area of ​​the temperature zoning system is to switch the opening of the mixing three-way valve 18-2 to the internal circulation side of the low-temperature terminal area when the terminal of the low-temperature area is about to reach the target temperature, and gradually block the water flow (energy) from the direction of the water filter, thereby realizing the flow change between high and low temperature areas to better meet the actual needs of different types of terminals (this is also an explanation of the dual-zone control principle. For example, the terminal can be a radiator with a higher water temperature requirement, or a floor heating pipe with a lower water temperature requirement, which is convenient for control and is also the conventional method). The piping components of the low-temperature heating (or high-temperature cooling) terminal area under this temperature zoning function are optional. Specific illustrations are provided in the following embodiments. The return water from the terminal enters the multi-functional water tank system from the secondary circulation main return water pipe 13, then enters the inlet of the coupled energy storage water tank 2, enters the energy storage water tank, and then flows out through the outlet of the coupled energy storage water tank 2, and finally flows out of the system from the primary circulation outlet on the heat source supply side, completing the heating or cooling function.

[0161] It should be noted that the water flow is divided into the primary side (water circulation before the coupled energy storage tank 2): the power source of the primary side is the same as that when heating water, which is the action of the circulating water pump outside the heat source connection end, and is not set in the water tank system. Of course, in one embodiment, the circulating water pump can also be set in the water tank system and placed inside the heat source connection end; the power source of the secondary side (water circulation after the coupled energy storage tank 2) is the first heat exchanger pipeline circulation pump 17 at the high temperature (or low temperature) end of heating and the second heat exchanger pipeline circulation pump 18-3 (if optional) at the low temperature (or high temperature) end of the temperature zoning system.

[0162] Example 7

[0163] In one embodiment of this utility model, a heat pump system includes an integrated multi-functional water tank system as described in any of the above embodiments.

[0164] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An integrated multi-functional water tank system, characterized in that, Includes an integrated domestic hot water tank (1), a coupled energy storage tank (2), and water circuit accessories; The water system fittings include a first set of connecting pipes (3), a second set of connecting pipes (4) and a third set of connecting pipes (5), and each connecting pipe is equipped with a pipe connection port for installing terminal equipment; The first set of connecting pipes (3) connects the coupled energy storage water tank (2), the domestic hot water tank (1), and the heat source; The first set of connecting pipes (3) includes a switching three-way valve (6), which is configured to connect the heat source to the inlet of the coupled energy storage tank (2) and / or the domestic hot water tank (1); The second set of connecting pipes (4) is connected between the domestic hot water tank (1) and the hot water user terminal and the main water supply terminal of the tank system; The third set of connecting pipes (5) connects the coupled energy storage tank (2) to the heat exchange terminal.

2. The integrated multi-functional water tank system as described in claim 1, characterized in that, The first set of connecting pipes (3) includes a primary circulation input pipe (7) and a primary circulation output pipe (8); The second set of connecting pipes (4) includes a domestic hot water pipe (9), a cold water return circulation pipe (10), and a tap water supply pipe (11). The domestic hot water pipe (9) and the cold water return circulation pipe (10) are connected to the hot water terminal, and the tap water supply pipe (11) is connected to the main water supply terminal of the water tank system. The third set of connecting pipes (5) includes a first heat exchanger water supply pipe (12) and a secondary circulation main return water pipe (13), or the third set of connecting pipes (5) includes a first heat exchanger water supply pipe (12), a second heat exchanger pipe module (18) and a secondary circulation main return water pipe (13). The integrated multi-functional water tank system also includes one or more of the following: an energy-saving adjustment module (14), an electric auxiliary heating module (15), and a water replenishment safety module.

3. The integrated multi-functional water tank system as described in claim 2, characterized in that, The energy-saving adjustment module (14) is connected between the switching three-way valve (6) and the coupled energy storage water tank (2); The energy-saving adjustment module (14) includes: an energy-saving mode adjustment three-way valve (14-1), a first energy-saving input pipeline (14-2), and a second energy-saving mode input pipeline (14-3); The energy-saving mode regulating three-way valve (14-1) is connected to the switching three-way valve (6); The first energy-saving input pipeline (14-2) is connected between the energy-saving mode regulating three-way valve (14-1) and the coupled energy storage water tank (2); The second energy-saving mode input pipeline (14-3) is connected between the energy-saving mode regulating three-way valve (14-1) and the first heat exchanger water supply pipe (12).

4. The integrated multi-functional water tank system as described in claim 2, characterized in that, The electric auxiliary heating module (15) is mounted on the primary circulation input pipe (7); The electric auxiliary heating module (15) includes a pipe-type electric auxiliary heater (15-1) and an exhaust valve (15-2). The pipe-type electric auxiliary heater (15-1) is located at one end of the primary circulation input pipe (7) and connected thereto, and is used to perform secondary heating on the hot water in the primary circulation input pipe (7) when it is turned on. The exhaust valve (15-2) is located at the top of the pipe-type electric auxiliary heater (15-1).

5. The integrated multi-functional water tank system as described in claim 2, characterized in that, The water supply safety module includes a bypass pipe (16) of the tap water supply pipe (11) and a safety water supply valve assembly (19); One end of the bypass pipe (16) is connected to the middle of the tap water supply pipe (11), and the other end is connected to the heat source supply side supply pipe; The safety water supply valve assembly (19) is installed on the water supply pipeline on the heat source supply side. The safety water supply valve assembly (19) has an anti-backflow structure to prevent the circulating water flowing through the heat source side from flowing back to the domestic hot water tank (1). The safety water supply valve assembly (19) is an automatic water supply valve (19-1) with anti-backflow design, or the safety water supply valve assembly (19) is a manual ball valve (19-2) and a water circuit check valve (19-3) that cooperate with each other.

6. The integrated multi-functional water tank system as described in claim 2, characterized in that, One end of the anti-cold water return circulation pipe (10) is connected to the pipeline in front of the water outlet control valve of the hot water user terminal outside the multi-functional water tank system, and the other end is connected to the inside of the domestic hot water tank (1). The anti-cold water return circulation pipe (10) is connected to a circulation pump to form an anti-cold water circulation loop between the domestic hot water tank (1) and the hot water user terminal.

7. The integrated multi-functional water tank system as described in claim 2, characterized in that, The second heat exchanger piping module (18) includes a second heat exchanger water supply pipe (18-1), a mixing three-way valve (18-2), and a second heat exchanger piping circulation pump (18-3); The second heat exchanger pipeline circulation pump (18-3) is connected to the second heat exchanger water supply pipe (18-1); One end of the second heat exchanger water supply pipe (18-1) is connected to the secondary circulation main return water pipe (13) through the mixing three-way valve (18-2); Wherein, when the heat exchange terminal is a heating terminal, the first heat exchanger water supply pipe (12) is connected to the high-temperature heating area of ​​the heating terminal, and the second heat exchanger water supply pipe (18-1) is connected to the low-temperature heating area of ​​the heating terminal; or, when the heat exchange terminal is a cooling terminal, the first heat exchanger water supply pipe (12) is connected to the low-temperature cooling area of ​​the cooling terminal, and the second heat exchanger water supply pipe (18-1) is connected to the high-temperature cooling area of ​​the cooling terminal. A first heat exchanger pipeline circulation pump (17) is installed on the first heat exchanger water supply pipe (12) for flow control of the separate circulation pipeline of the first heat exchanger water supply pipe (12).

8. The integrated multi-functional water tank system as described in any one of claims 2-7, characterized in that, The domestic hot water tank (1) is equipped with a water tank heating coil (1-1). The inlet of the water tank heating coil (1-1) is connected to the primary circulation input pipe (7), and the outlet of the water tank heating coil (1-1) is connected to the primary circulation output pipe (8). The coupled energy storage tank (2) is provided with a first inlet (a), a first outlet (b), a second inlet (c), and a second outlet (d). The first inlet (a) and the second outlet (d) are located on the same side of the coupled energy storage tank (2), and the first outlet (b) and the second inlet (c) are located on the other side of the coupled energy storage tank (2). The primary circulation input pipe (7) is connected to the switching three-way valve (6) and then to the first inlet (a); the primary circulation output pipe (8) is connected to the second outlet (d); The first heat exchanger water supply pipe (12) is connected to the first water outlet (b), and the secondary circulation main return water pipe (13) is connected to the second water inlet (c).

9. The integrated multi-functional water tank system as described in claim 8, characterized in that, The integrated multi-functional water tank system also includes one or more of the following: A water pressure gauge and safety valve assembly (20) is installed in the secondary circulation main return water pipe (13); A water filter (21) is installed on the main water pipe of the first heat exchanger water supply pipe (12) and the second heat exchanger pipeline module (18) or is installed separately on the first heat exchanger water supply pipe (12). A water expansion tank (22) is installed on the primary circulation output pipe (8) or the primary circulation input pipe (7); A water tank pressure relief valve (23) is installed on the domestic hot water pipe (9) or on the top of the domestic hot water tank (1); A water tank anti-vacuum valve (24) is installed on the top of the domestic hot water tank (1) or on the domestic hot water pipe (9); A water tank receiving tray (25) is located below the integrated domestic hot water tank (1), the coupled energy storage tank (2), and the water circuit fittings.

10. A heat pump system, characterized in that, Including the integrated multi-functional water tank system as described in any one of claims 1-9.

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