A central hot water circulation system

Abstract

A central hot water circulating system belongs to the technical field of heating. The central hot water circulating system comprises a shell, a domestic hot water circulating system, a radiator hot water circulating system, a floor heating hot water circulating system, a system heating circulating system and a water storage bucket temperature controller. The domestic hot water circulating system outputs hot water in the water storage bucket at constant temperature and pressure, and triggers the system heating circulating system to heat the hot water in the water storage bucket synchronously through the water storage bucket temperature controller. The radiator hot water circulating system and the floor heating hot water circulating system circulate the hot water in the water storage bucket respectively, and output the heat of the hot water for heating. The water storage bucket temperature controller detects the return water temperature at the return water end of the domestic hot water circulating system, and triggers the system heating circulating system to heat the hot water in the water storage bucket in advance at constant temperature according to the return water temperature. The domestic hot water circulating system is synchronously circulated at constant temperature. Four groups of hot water circulating systems are integrated in the shell to form a whole. The domestic hot water circulating system is synchronously started through the water storage bucket temperature controller to trigger the system heating circulating system, so as to ensure that domestic water is output at constant temperature and pressure, and is heated immediately.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heating, and particularly relates to a central hot water circulating system. BACKGROUND

[0002] There is a demand for using hot water in domestic and public environments, and hot water is used to provide heat energy for heating equipment in winter. However, it is found that during the use of hot water: 1) because the hot water source is often a certain distance away from the water use end, a large amount of cooled water is retained in the pipeline, resulting in a large amount of abandoned water before the use of hot water, which is particularly common in a domestic environment; 2) in the prior art, solar energy, air energy, ground source energy and gas water heaters are generally used to heat water;

[0003] However, solar energy is limited by installation site and affected by rainy weather, and cannot guarantee heat energy, and has a short service life;

[0004] Air energy has obvious defects in low-temperature environments in winter. When the ambient temperature is 0 DEG C, the temperature of the air energy fan part is close to minus 10 DEG C, resulting in frosting of the outdoor unit and inability to heat, and the water cannot be continuously used for a long time, and heat energy cannot be guaranteed, which is not suitable for use in cold regions;

[0005] The installation cost of ground source energy is high, and the structure is complex. Influenced by factors such as clay layer, rock layer, high altitude and low underground water level, it is impossible to predict whether the underground water has sufficient exchange water volume. In particular, when the underground water temperature is only 4 DEG C in winter, heat exchange cannot be effectively achieved, resulting in a huge power consumption and a large investment risk;

[0006] The installation structure of the gas water heater is single, and is limited by professional supporting technology, and cannot achieve the perfect functions of constant temperature pressure boosting output and constant temperature circulating heating. The current situation is that several water heaters are installed in one household in the room, which is not safe and reliable, and has poor use effect.

[0007] Therefore, it is particularly important to provide a central hot water circulating system which has the functions of constant temperature pressure boosting hot water circulating output, constant temperature circulating heating, full-automatic self-operation and convenient installation. SUMMARY

[0008] The application mainly solves the technical problems of the prior art, and provides a central hot water circulating system.

[0009] The above technical problem of the present application is mainly solved by the following technical scheme: a central hot water circulation system, comprising a shell, and a domestic hot water circulation, a heating hot water circulation, a floor heating hot water circulation, a system heating circulation and a water storage bucket temperature controller installed on the shell, the domestic hot water circulation outputs hot water in the water storage bucket at constant temperature and pressure, and triggers the system heating circulation to heat the hot water in the water storage bucket simultaneously through the water storage bucket temperature controller; the heating hot water circulation circulates the hot water in the water storage bucket and outputs the heat of the hot water for heating; the floor heating hot water circulation circulates the hot water in the water storage bucket and outputs the heat of the hot water for heating; the water storage bucket temperature controller detects the return water temperature at the return water end of the domestic hot water circulation, and triggers the system heating circulation to heat the hot water in the water storage bucket in advance and at constant temperature according to the return water temperature, while the domestic hot water circulation is simultaneously circulated at constant temperature, so that the domestic water is heated immediately when turned on.

[0010] As a preferred, the system heating circulation comprises a water storage bucket, a water heater and a circulation pump, the water supply end of the water storage bucket is connected with a water supply main pipe, the water supply main pipe is installed with a water storage bucket water outlet, the return water end of the water storage bucket is connected with a return water main pipe, the return water main pipe is installed with a water storage bucket water inlet, the water inlet of the water heater is connected with the water storage bucket water outlet through the circulation pump, and the water outlet of the water heater is connected with the water storage bucket water inlet;

[0011] The domestic hot water circulation comprises a pressure boosting circulation pump with a water flow switch, a household water supply interface A, a household return water interface A, an electromagnetic valve and a return water interface I, the household water supply interface A is connected with the water supply main pipe through the pressure boosting circulation pump, the household return water interface A is connected with the return water interface I through the electromagnetic valve, and the return water interface I is installed on the return water main pipe;

[0012] The heating hot water circulation comprises a water supply circulation pump I, a household water supply interface B, a household return water interface B and a return water interface II, the household water supply interface B is connected with the water supply main pipe through the water supply circulation pump I, the household return water interface B is connected with the return water interface II, and the return water interface II is installed on the return water main pipe;

[0013] The floor heating hot water circulation comprises a water supply circulation pump II, a household water supply interface C, a household return water interface C and a return water interface III, the household water supply interface C is connected with the water supply main pipe through the water supply circulation pump II, the household return water interface C is connected with the return water interface III, and the return water interface III is installed on the return water main pipe;

[0014] The temperature measuring probe of the water storage bucket temperature controller is located on the return water main pipe and downstream of the return water interface I.

[0015] As preferred, the warm water circulation further comprises a three-way valve I and a three-way valve II, one input end of the three-way valve I is connected with the water supply main pipe, the other input end of the three-way valve I is used for external cold source, the output end of the three-way valve I is connected with the water supply circulating pump I, the input end of the three-way valve II is connected with the house outlet return water interface B, one output end of the three-way valve II is connected with the return water interface II on the return water main pipe, the other output end of the three-way valve II is used for external cold source.

[0016] As preferred, the warm water circulation further comprises a three-way valve III and a three-way valve IV, one input end of the three-way valve III is connected with the water supply main pipe, the other input end of the three-way valve III is used for external cold source, the output end of the three-way valve III is connected with the water supply circulating pump II, the input end of the three-way valve IV is connected with the house outlet return water interface B, one output end of the three-way valve IV is connected with the return water interface III on the return water main pipe, the other output end of the three-way valve IV is used for external cold source.

[0017] As preferred, the shell is installed with an electrical control box, the electrical control box is installed with an air switch, a leakage protector, a DC switch power supply, a relay I, a relay II, a relay III, a relay IV, a relay V, a restart button, a power socket, a water storage bucket temperature controller, a floor heating temperature controller, a water heater controller and an interlocking relay switch, the relay I is electrically connected with the booster circulating pump, the relay II is electrically connected with the electromagnetic valve, the relay III is electrically connected with the water supply circulating pump I, the relay IV is electrically connected with the water supply circulating pump II, the relay V is electrically connected with the circulating pump, the interlocking relay switch is wirelessly connected with the water supply circulating pump I, the DC switch power supply is electrically connected with the interlocking relay switch, the relay I, the relay II, the relay III, the relay IV, the relay V, the restart button, the water storage bucket temperature controller and the floor heating temperature controller, the water heater controller is electrically connected with the water heater, and the temperature measuring probe of the floor heating temperature controller is located on the return water interface III of the floor heating warm water circulation.

[0018] As preferred, the shell is installed with a mounting template, the mounting template is installed with an indoor water supply interface A, an indoor return water interface A, an indoor water supply interface B, an indoor return water interface B, an indoor water supply interface C, an indoor return water interface C, a power supply socket, a tap water supply port and a natural gas interface.

[0019] As preferred, the return water main pipe is installed with a tap water inlet, the tap water inlet is located upstream of the temperature measuring probe of the water storage bucket temperature controller, and the tap water inlet is connected with the tap water supply port.

[0020] As preferred, the temperature measuring probe of the water storage bucket temperature controller is located on the return water main pipe and downstream of the tap water inlet, the return water interface I, the return water interface II and the return water interface III.

[0021] As a preference, the water heater is a gas water heater or an electric water heater.

[0022] As a preference, the water supply end of the water storage bucket is connected with the water supply main pipe through a water supply valve, and the water return end of the water storage bucket is connected with the water return main pipe through a water return valve.

[0023] The present application has the beneficial effects that four groups of hot water circulation are integrated in the shell to form a whole, the domestic hot water circulation is started synchronously with the heat supply circulation triggered by the water storage bucket temperature controller, so that the constant temperature pressurized output of domestic water is ensured, and the hot water is opened and heated immediately. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the present application.

[0025] In the figure: 1, shell; 2, water storage bucket; 3, water storage bucket temperature controller; 4, water heater; 5, circulation pump; 6, water supply main pipe; 7, water outlet of water storage bucket; 8, water return main pipe; 9, water inlet of water storage bucket; 10, hot water inlet; 11, hot water outlet; 12, pressurized circulation pump; 13, household water supply interface A; 14, household water return interface A; 15, electromagnetic valve; 16, water return interface I; 17, water supply circulation pump I; 18, household water supply interface B; 19, household water return interface B; 20, water return interface II; 21, water supply circulation pump II; 22, household water supply interface C; 23, household water return interface C; 24, water return interface III; 25, three-way valve I; 26, three-way valve II; 27, three-way valve III; 28, three-way valve IV; 29, electrical control box; 30, air switch; 31, leakage protector; 32, DC switch power supply; 33, relay I; 34, relay II; 35, relay III; 36, relay IV; 37, relay V; 38, restart button; 39, power socket; 40, floor heating temperature controller; 41, water heater controller; 42, interlocking relay switch; 43, power supply socket; 44, tap water supply inlet; 45, natural gas interface; 46, tap water inlet; 47, water supply valve; 48, water return valve; 49, thermal insulation layer; 50, water bucket cleaning valve; 51, water pressure gauge; 52, water temperature gauge; 53, constant pressure overflow valve; 54, water leakage hole; 55, canopy; 56, roller; 57, tool box; 58, connecting port; 59, installation template. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example: A central hot water circulation system, such as Figure 1 As shown, the system includes a housing 1, and a domestic hot water circulation system, a central heating hot water circulation system, a floor heating hot water circulation system, a system heating circulation system, and a water storage tank temperature controller 3 installed on the housing 1. The domestic hot water circulation system outputs hot water from the water storage tank 2 at a constant temperature and pressure to domestic water devices, such as faucets and shower heads, to meet the requirements for constant temperature and pressure of domestic water. At the same time, the water storage tank temperature controller 3 triggers the system heating circulation system to heat the hot water in the water storage tank 2 synchronously. The central heating hot water circulation system circulates the hot water in the water storage tank 2 and outputs the heat of the hot water to heating devices, such as radiators and wall-mounted boilers. The floor heating hot water circulation system circulates the hot water in the water storage tank 2 and outputs the heat of the hot water to the floor heating system. The water storage tank temperature controller 3 detects the return water temperature at the return end of the domestic hot water circulation system and triggers the system heating circulation system to preheat the hot water in the water storage tank 2 to a constant temperature based on the return water temperature. At the same time, the domestic hot water circulation system circulates at a constant temperature, so that domestic water is hot immediately upon application.

[0028] The system heating cycle includes a water storage tank 2, a water heater 4, a circulation pump 5, and a relay V37 electrically connected to the circulation pump 5. The water storage tank 2 is provided with a water supply end and a water return end. The water supply end of the water storage tank 2 is connected to a main water supply pipe 6, and a water outlet 7 of the water storage tank is installed on the main water supply pipe 6. The water return end of the water storage tank 2 is connected to a main return pipe 8, and a water inlet 9 of the water storage tank is installed on the main return pipe 8. The hot water inlet 10 of the water heater 4 is connected to the circulation pump 5, and is connected to the water outlet 7 of the water storage tank through the circulation pump 5. The hot water outlet 11 of the water heater 4 is connected to the water inlet 9 of the water storage tank.

[0029] The working principle of the heating cycle of the system is as follows: the normally open output of relay V37 turns on the circulation pump 5. Under the action of the circulation pump 5, the low-temperature hot water in the storage tank 2 flows into the water heater 4 for heating. The water heater 4 heats the water while outputting the heated hot water to the storage tank 2 until the temperature of the low-temperature hot water in the storage tank 2 reaches the hot water output set value of the water heater 4. Then the water heater 4 stops heating and the circulation pump 5 turns off.

[0030] As preferred, the water outlet 7 of the water storage bucket is arranged close to the water supply end of the water storage bucket 2, so that the low temperature hot water in the water storage bucket 2 can flow into the circulating pump 5 in advance and be heated in the water heater 4, to ensure the temperature of the hot water flowing into the water supply main pipe 6 from the water supply end of the water storage bucket 2. As preferred, the water inlet 9 of the water storage bucket is arranged close to the water return end of the water storage bucket 2, so that the heated hot water flowing out of the water outlet 11 of the water heater 4 can be reduced to the minimum extent in the process of flowing into the water storage bucket 2. The water heater 4 is a water heater of the prior art, which is equipped with a hot water temperature adjusting device, and can set the output temperature of the hot water, i.e. the hot water output setting value, and can detect the temperature of the low temperature hot water flowing into the water heater 4. When the temperature of the low temperature hot water flowing in is lower than the hot water output setting value, the water heater 4 continues to heat the low temperature hot water. When the temperature of the low temperature hot water flowing in reaches the hot water output setting value, the water heater 4 stops heating. At this time, the temperature of the hot water in the water storage bucket 2 is the hot water output setting value of the water heater 4.

[0031] The hot water circulation system comprises a booster circulating pump 12 with a water flow switch, a household water supply interface A13, a household water return interface A14, an electromagnetic valve 15, a water return interface I 16, a relay I 33 electrically connected with the booster circulating pump 12, and a relay II 34 electrically connected with the electromagnetic valve 15. The input end of the booster circulating pump 12 is connected with the water supply main pipe 6, the output end of the booster circulating pump 12 is connected with the household water supply interface A13, the electromagnetic valve 15 is installed on the water return interface I 16, one end of the electromagnetic valve 15 is connected with the household water return interface A14, the other end of the electromagnetic valve 15 is connected with the water return interface I 16, and the water return interface I 16 is installed on the water return main pipe 8. The household water supply interface A13 and the household water return interface A14 are matched to connect the hot water pipeline of a family, a hotel or a guesthouse, and a hot water device such as a faucet or a shower is installed on the hot water pipeline.

[0032] In use, when the faucet is opened, the water flow switch is triggered to synchronously energize the relay I 33 and the relay II 34 to be turned on. The normally open end of the relay I 33 inputs the common end to output to turn on the booster circulating pump 12, and the common end of the relay II 34 inputs the normally open end to output to turn off the electromagnetic valve 15. Under the boosting water supply of the booster circulating pump 12, the faucet outputs hot water at constant temperature and pressure, and cold water is supplemented into the water storage bucket 2 through the tap water supply port 44, the tap water inlet 46 and the water return main pipe 8. Since the tap water inlet 46 is installed on the water return main pipe 8 and the installation position is located upstream of the temperature measuring probe of the water storage bucket temperature controller 3, when the cold water is supplemented into the water return main pipe 8 through the tap water inlet 46, the temperature measuring probe of the water storage bucket temperature controller 3 detects that the temperature of the cold water is lower than the set temperature of the low temperature hot water in the water storage bucket 2, and the system heating circulation is triggered to be started synchronously to heat the low temperature hot water in the water storage bucket 2, so as to ensure the constant temperature output of the hot water of the faucet.

[0033] When the faucet is closed, the relay I 33 common open end input common end output will close the booster circulating pump 12, the booster circulating pump 12 stops water supply, the relay II 34 common open end input common end output will turn on the electromagnetic valve 15, the low temperature hot water in the domestic hot water circulating return pipe is returned to the storage barrel 2 through the return water main 8; when the storage barrel temperature controller 3 detects that the return water temperature of the low temperature hot water is lower than the set temperature of the low temperature hot water heating of the storage barrel 2, the relay V 37 common end input common open end output is triggered synchronously to open the circulating pump 5, and the relay I 33 common closed end input common end output is opened to open the booster circulating pump 12, the system heating cycle and the domestic hot water cycle are started synchronously, the system heating cycle preheats and constant temperature heats the low temperature hot water in the storage barrel 2, and the domestic hot water cycle is constant temperature circulated synchronously, so that the domestic water is heated immediately when the faucet is opened, and the hot water is sufficient.

[0034] The temperature measuring probe of the storage barrel temperature controller 3 is arranged on the return water main 8 and located downstream of the return water interface I 16 and the water inlet 46 of tap water, so that the system heating cycle can be started synchronously when the domestic hot water cycle is started.

[0035] The warm water heating cycle includes a water supply circulating pump I 17, a household water supply interface B 18, a household return water interface B 19, a return water interface II 20, and a relay III 35 electrically connected with the water supply circulating pump I 17. The input end of the water supply circulating pump I 17 is connected with the water supply main 6, the output end of the water supply circulating pump I 17 is connected with the household water supply interface B 18, the water supply circulating pump I 17 is electrically connected with the interlocking relay switch 42 through the relay III 35, the household return water interface B 19 is connected with the return water interface II 20, and the return water interface II 20 is installed on the return water main 8; the household water supply interface B 18 and the household return water interface B 19 are matched to connect the warm water pipe of the family, hotel and hotel, and the warm water pipe is provided with a warm water device such as a warm water piece and a wall-mounted stove; in order to realize the synchronous opening and closing of the warm water device and the water supply circulating pump I 17, the warm water device is wirelessly connected with the interlocking relay switch 42 through wireless communication.

[0036] When the indoor environment temperature needs to be heated, the starting key of the heating device (such as a heating radiator) is pressed, the heating device is turned on, and the interlocking relay switch 42 is triggered synchronously to start, the interlocking relay switch 42 is electrically connected to the relay III 35, and the relay III 35 is always open to output to synchronously start the water supply circulating pump I 17; under the water supply of the water supply circulating pump I 17, the water storage bucket 2 and the heating hot water circulation form a loop, the hot water in the water storage bucket 2 is circulated between the water storage bucket 2 and the heating hot water circulation, and the heating device exchanges heat with the hot water in the water storage bucket 2 to supply heat to the indoor environment. When the indoor environment temperature reaches the heating device heating setting temperature, the heating device is turned off, and the interlocking relay switch 42 is triggered synchronously to start, and the interlocking relay switch 42 makes the relay III 35 always close to output to synchronously turn off the water supply circulating pump I 17.

[0037] When the heating hot water circulation is in the natural water source area of sufficient underground water, deep river, reservoir, and gully, and the water temperature in summer is lower than 20℃, a three-way valve I 25 can be installed at the front end of the water supply circulating pump I 17, that is, one input end of the three-way valve I 25 is connected with the water supply main pipe 6, the other input end of the three-way valve I 25 is connected with the water source through a water source inlet pipe, and the output end of the three-way valve I 25 is connected with the water supply circulating pump I 17; a three-way valve II 26 is installed on the house outlet water interface B19, that is, the input end of the three-way valve II 26 is connected with the house outlet water interface B19, one output end of the three-way valve II 26 is connected with the water return interface II 20 on the water return main pipe 8, and the other output end of the three-way valve II 26 is connected with the water source through a water source drain pipe.

[0038] In use, the water supply movable joint valve 47 at the water supply end of the water storage bucket 2 and the water return movable joint valve 48 at the water return end of the water storage bucket 2 are closed, the water source and the heating hot water circulation form a loop under the water supply of the water supply circulating pump I 17, and the water source is circulated in the heating hot water circulation, at this time, the heating device is converted into a cold air conditioner, and the water source is equivalent to a cold source.

[0039] When the heating hot water circulation is in an environment without natural water source, a normal temperature industrial water cooler can also be installed as a cold source of the cold air conditioner, and the comfort is greatly improved compared with ordinary refrigeration air conditioners.

[0040] It should be noted that when the heating device is converted into a cold air conditioner for use, the heating device needs to be selected in advance to meet the use demand of the cold source.

[0041] The hot water circulation of the floor heating comprises a water supply circulating pump II 21, a water inlet interface C22, a water outlet interface C23, a water return interface III 24, and a relay IV 36 electrically connected with the water supply circulating pump II 21, the input end of the water supply circulating pump II 21 is connected with the water supply main pipe 6, the output end of the water supply circulating pump II 21 is connected with the water inlet interface C22, the water outlet interface C23 is connected with the water return interface III 24, and the water return interface III 24 is installed on the water return main pipe 8; the water inlet interface C22 and the water outlet interface C23 are matched to connect the floor heating pipeline of the family, the hotel and the guesthouse, and the floor heating pipeline is installed with the floor heating.

[0042] When the indoor environment temperature needs to be heated, the floor heating is turned on, and the relay IV 36 is turned on to synchronously turn on the water supply circulating pump II 21; under the water supply of the water supply circulating pump II 21, the water storage bucket 2 and the hot water circulation of the floor heating form a loop, the hot water in the water storage bucket 2 is circulated between the water storage bucket 2 and the hot water circulation of the floor heating, the floor heating exchanges heat with the hot water in the water storage bucket 2, and the heat of the hot water is supplied to the indoor environment for heating. The temperature measuring probe of the floor heating temperature controller 40 is located on the water return interface III 24 of the hot water circulation of the floor heating, and is used to detect the water return temperature of the hot water circulation of the floor heating; when the water return temperature reaches the heating setting temperature of the floor heating, the floor heating is turned off, and the relay IV 36 is turned off to synchronously turn off the water supply circulating pump II 21.

[0043] When the hot water circulation of the floor heating is in the natural water source area with sufficient underground water, deep river, reservoir and gully, and the water temperature is lower than 20℃ in summer, a three-way valve III 27 is additionally installed at the front end of the water supply circulating pump II 21, that is, one input end of the three-way valve III 27 is connected with the water supply main pipe 6, the other input end of the three-way valve III 27 is connected with the water source through a water source inlet pipe, and the output end of the three-way valve III 27 is connected with the water supply circulating pump II 21; a three-way valve IV 28 is additionally installed on the water outlet interface B19, that is, the input end of the three-way valve IV 28 is connected with the water outlet interface B19, one output end of the three-way valve IV 28 is connected with the water return interface III 24 on the water return main pipe 8, and the other output end of the three-way valve IV 28 is connected with the water source through a water source drain pipe.

[0044] In use, the water supply movable joint valve 47 at the water supply end of the water storage bucket 2 and the water return movable joint valve 48 at the water return end of the water storage bucket 2 are closed, the water source and the hot water circulation of the floor heating form a loop under the water supply of the water supply circulating pump II 21, and the water source is circulated in the hot water circulation of the floor heating, at this time, the floor heating is converted into a cold air conditioner, and the water source is equivalent to a cold source.

[0045] In the embodiment, the temperature measuring probe of the water storage bucket temperature controller 3 is arranged on the return water main 8 and is located downstream of the return water interface I 16 and the tap water inlet 46. When the domestic hot water circulation is started, the system heating circulation can be triggered to start simultaneously. The temperature measuring probe of the water storage bucket temperature controller 3 can also be arranged on the return water main 8 and is located downstream of the tap water inlet 46, the return water interface I 16, the return water interface II 20 and the return water interface III 24. In addition to the above-mentioned function, the return water temperature of the radiator hot water circulation and the floor heating hot water circulation can be detected. During the long-time uninterrupted heating process of the radiator hot water circulation and the floor heating hot water circulation, when the return water temperature is lower than the set temperature of the low-temperature hot water heating of the water storage bucket 2, the system heating circulation is triggered to start, and the low-temperature hot water in the water storage bucket 2 is heated to ensure that the hot water in the radiator hot water circulation and the floor heating hot water circulation has sufficient heat for heating, thereby ensuring the long-time uninterrupted heating of the radiator hot water circulation and the floor heating hot water circulation.

[0046] The shell 1 is provided with an electrical control box 29, and the electrical control box 29 is provided with an air switch 30, a leakage protector 31, a DC switch power supply 32, a relay I 33, a relay II 34, a relay III 35, a relay IV 36, a relay V 37, a restart button 38, a power socket 39, a water storage bucket temperature controller 3, a floor heating temperature controller 40, a water heater controller 41 and an interlocking relay switch 42. The relay I 33 is electrically connected with the booster circulation pump 12, the relay II 34 is electrically connected with the electromagnetic valve 15, the relay III 35 is electrically connected with the water supply circulation pump I 17, the relay IV 36 is electrically connected with the water supply circulation pump II 21, the relay V 37 is electrically connected with the circulation pump 5, the DC switch power supply 32 is electrically connected with the interlocking relay switch 42 for power supply, the interlocking relay switch 42 is wirelessly connected with the water supply circulation pump I 17, the water heater 4 controller is electrically connected with the water heater 4, and the water heater 4 controller is used for controlling the water heater 4 switch.

[0047] The electrical control box 29 is further provided with a tool box 57 for system maintenance and disassembly.

[0048] The shell 1 is provided with a mounting template 59, and the mounting template 59 is provided with an indoor water supply interface A 13, an indoor return water interface A 14, an indoor water supply interface B 18, an indoor return water interface B 19, an indoor water supply interface C 22, an indoor return water interface C 23, a power supply socket 43, a tap water supply port 44 and a natural gas interface 45.

[0049] In order to facilitate the user to install, provide installation template 59 as installation positioning basis, mark the power supply socket 43, natural gas interface 45, tap water supply port 44, the position of three groups of circulating interface, and the size of the ground and wall; When installing, only need to connect the corresponding interface can carry on the system normal operation. At the same time, according to the user needs, the life hot water circulation, heating hot water circulation and ground heating hot water circulation can be transformed, increased, expanded and other operations, such as in the hotel catering environment, the life hot water circulation can be expanded one way, using the installation mode and wiring method of the embodiment can be used to meet the actual use scene requirements of the user.

[0050] The power supply socket 43 is electrically connected with the air switch 30 and the leakage protector 31, and is electrically connected with the DC switching power supply 32, the power socket 39 and the water heater controller 41 through the air switch 30 and the leakage protector 31, respectively. The power supply socket 43 is used for external power supply to power the system. The DC switching power supply 32 is a control and driving power supply, which is electrically connected with the relay I 33, the relay II 34, the relay III 35, the relay IV 36, the relay V 37, the water storage bucket temperature controller 3, the floor heating temperature controller 40, the booster circulating pump 12, the electromagnetic valve 15, the water supply circulating pump I 17, the water supply circulating pump II 21, the circulating pump 5 and the restart button 38.

[0051] The water heater 4 can adopt gas water heater or electric water heater. The connecting port 58 is installed on the water heater 4. When the gas water heater is used, the connecting port 58 is a natural gas connecting port and is connected with the natural gas interface 45 on the installation template 59. When the electric water heater 4 is used, the connecting port 58 is a power supply connecting port.

[0052] The outer surface of the water storage bucket 2 is sleeved with a heat preservation layer 49 to reduce the loss of internal hot water heat energy. The water supply end of the water storage bucket 2 is provided with a water supply valve 47 and is connected with the water supply main pipe 6 through the water supply valve 47. The water return end of the water storage bucket 2 is provided with a water return valve 48 and is connected with the water return main pipe 8 through the water return valve 48. When the hot water circulation fails, the water supply valve 47 and the water return valve 48 can be disassembled and repaired. When the system cannot operate normally, the independent circuit board and the plug-in connection line can be disassembled and returned to the factory for inspection and repair.

[0053] The bottom of the water storage bucket 2 is provided with a bucket cleaning valve 50. When there are impurities such as scale in the water storage bucket 2, the tap water supply port 44 can be closed and the bucket cleaning valve 50 can be opened to clean.

[0054] The water supply main pipe 6 is provided with a water pressure gauge 51 and a water temperature gauge 52 for measuring the water pressure and water temperature in the pipeline respectively. The water supply main pipe 6 is provided with a constant pressure overflow valve 53, and the bottom of the shell 1 is provided with a water leakage hole 54, and the constant pressure overflow valve 53 is connected with the water leakage hole 54. The system is automatically operated in the temperature range under the premise of being powered on and water supplied. When there is air in the pipeline or the gas water heater 4 fails to ignite, the constant pressure overflow valve 53 can be opened to discharge the mixture of steam and water. The discharged mixed water enters the floor drain or the ground through the water leakage hole 54, and then the restart button 38 is pressed to power off the system for 3-5 seconds and restart the system to normal automatic operation.

[0055] The top end of the shell 1 is provided with a rain shelter 55 for preventing rain and sun, which can protect the electrical components and power lines in the shell 1. The shell 1 is made of 304 stainless steel, which prolongs the service life and improves the safety and heat dissipation effect when installed on the balcony or outdoors. The bottom end of the shell 1 is provided with a roller 56 for easy transportation. In the system, the components are connected by pipelines, and the pipelines are made of PPR polypropylene and brass, with a service life of more than 50 years. The design life of the control appliance is 300,000 times, which is about 8 years according to 100 times per day. The heating and floor heating run continuously, and the service life of the micro direct current circulating pump is more than 10 years in winter. The control appliance, circulating pump 5 and electromagnetic valve 15 all use safe and reliable DC 24V direct current power supply, which is an existing general-purpose component that is easy to find and replace.

[0056] It has been verified that the system uses a gas water heater with a displacement of 16L / Min or more or an electric water heater with a power of 6KW-20KW for heating. The heating displacement or power installation and use requirements are matched, and a DC 24V safe voltage switching power supply is used as the control and driving power supply. The displacement of the domestic hot water circulation, heating water circulation and floor heating water circulation is 25L / Min or more, for example, the domestic hot water circulation can meet the full discharge of two faucets, and can supply water to 3-5 rooms. The heating water circulation can drive 2-3 heating radiators, and the floor heating water circulation can be used for more than 60 square meters of floor heating, which can meet the heating displacement requirements. In the research and development test practice process, the reliability of the domestic hot water circulation has been verified under the premise of using a 16L / Min gas water heater for heating. When the water temperature reaches 50℃, the three-way hot water circulation is sufficient for synchronous heating, and there is a large excess. Moreover, when in the environment of a river, reservoir or other natural conditions with sufficient deep underground water, the water temperature is lower than 20℃, the heating water circulation and the floor heating water circulation can be modified into a cold air conditioner, and the use cost is extremely low. At the same time, the heating water circulation can also be equipped with a normal temperature industrial water cooler as a cold source of the cold air conditioner, and the comfort is greatly improved compared with ordinary refrigeration air conditioners.

[0057] Finally, it should be pointed out that the above embodiments are only representative examples of the present application. Obviously, the present application is not limited to the above embodiments, and can have many variations. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application should be considered as falling within the protection scope of the present application.

Claims

1. A central hot water circulation system, characterised in that, The system comprises a shell (1), a domestic hot water circulation, a heating hot water circulation, a floor heating hot water circulation, a system heating circulation and a water storage bucket temperature controller (3). The domestic hot water circulation pressurizes and outputs hot water in the water storage bucket (2) at a constant temperature, and triggers the system heating circulation to heat the hot water in the water storage bucket (2) simultaneously through the water storage bucket temperature controller (3). The heating hot water circulation circulates the hot water in the water storage bucket (2) to output the heat of the hot water for heating. The floor heating hot water circulation circulates the hot water in the water storage bucket (2) to output the heat of the hot water for heating. The water storage bucket temperature controller (3) detects the return water temperature at the return water end of the domestic hot water circulation, and triggers the system heating circulation to heat the hot water in the water storage bucket (2) in advance at a constant temperature according to the return water temperature, while the domestic hot water circulation is circulated at a constant temperature simultaneously, so that the domestic water is heated immediately when it is opened. The system heating circulation comprises a water storage bucket (2), a water heater (4) and a circulating pump (5). The water supply end of the water storage bucket (2) is connected with a water supply main pipe (6), the water supply main pipe (6) is provided with a water storage bucket water outlet (7), the return water end of the water storage bucket (2) is connected with a return water main pipe (8), the return water main pipe (8) is provided with a water storage bucket water inlet (9), the hot water inlet (10) of the water heater (4) is connected with the water storage bucket water outlet (7) through the circulating pump (5), and the hot water outlet (11) of the water heater (4) is connected with the water storage bucket water inlet (9). The domestic hot water circulation comprises a pressurized circulating pump (12) provided with a water flow switch, a household water supply interface A (13), a household return water interface A (14), an electromagnetic valve (15) and a return water interface I (16). The household water supply interface A (13) is connected with the water supply main pipe (6) through the pressurized circulating pump (12), the household return water interface A (14) is connected with the return water interface I (16) through the electromagnetic valve (15), and the return water interface I (16) is arranged on the return water main pipe (8). The temperature measuring probe of the water storage bucket temperature controller (3) is arranged on the return water main pipe (8) and located downstream of the return water interface I (16). The shell (1) is provided with a relay I (33), a relay II (34) and a relay V (37). The relay I (33) is electrically connected with the pressurized circulating pump (12), the relay II (34) is electrically connected with the electromagnetic valve (15), and the relay V (37) is electrically connected with the circulating pump (5). When the domestic water device is closed, the relay I (33) common open end input common end output will close the booster circulating pump (12), the booster circulating pump (12) stops water supply, the relay II (34) common open end input common end output will electromagnetic valve (15) conduction, the low temperature hot water in the domestic hot water circulating return pipe is returned to the storage bucket (2) through the return water main pipe (8); When the storage bucket temperature control instrument (3) detects that the temperature of the low temperature hot water is lower than the set temperature of the low temperature hot water heating in the storage bucket (2), the relay V (37) common end input common open end output is triggered synchronously, the circulating pump (5) is opened, and the relay I (33) common closed end input common end output is opened, the system heating cycle and the domestic hot water cycle are started synchronously, the system heating cycle is used for preheating and constant temperature of the low temperature hot water in the storage bucket (2), and the domestic hot water cycle is used for constant temperature circulation, so that the tap is opened, and the domestic water is heated immediately.

2. A central hot water circulation system according to claim 1, wherein The warm water circulation includes a water supply circulating pump I (17), a household water supply interface B (18), a household return water interface B (19) and a return water interface II (20), the household water supply interface B (18) is connected with the water supply main pipe (6) through the water supply circulating pump I (17), the household return water interface B (19) is connected with the return water interface II (20), and the return water interface II (20) is installed on the return water main pipe (8); The floor heating water circulation includes a water supply circulating pump II (21), a household water supply interface C (22), a household return water interface C (23) and a return water interface III (24), the household water supply interface C (22) is connected with the water supply main pipe (6) through the water supply circulating pump II (21), the household return water interface C (23) is connected with the return water interface III (24), and the return water interface III (24) is installed on the return water main pipe (8).

3. A central hot water circulation system as claimed in claim 2, wherein, The warm water circulation further includes a three-way valve I (25) and a three-way valve II (26), one input end of the three-way valve I (25) is connected with the water supply main pipe (6), the other input end of the three-way valve I (25) is used for external cold source, and the output end of the three-way valve I (25) is connected with the water supply circulating pump I (17); the input end of the three-way valve II (26) is connected with the household return water interface B (19), one output end of the three-way valve II (26) is connected with the return water interface II (20) on the return water main pipe (8), and the other output end of the three-way valve II (26) is used for external cold source.

4. A central hot water circulation system according to claim 2, wherein The floor heating water circulation further includes a three-way valve III (27) and a three-way valve IV (28), one input end of the three-way valve III (27) is connected with the water supply main pipe (6), the other input end of the three-way valve III (27) is used for external cold source, the output end of the three-way valve III (27) is connected with the water supply circulating pump II (21), the input end of the three-way valve IV (28) is connected with the household return water interface B (19), one output end of the three-way valve IV (28) is connected with the return water interface III (24) on the return water main pipe (8), and the other output end of the three-way valve IV (28) is used for external cold source.

5. A central hot water circulation system according to claim 2, wherein The shell (1) is provided with an electrical control box (29), the electrical control box (29) is provided with an air switch (30), an electric leakage protector (31), a DC switch power supply (32), a relay III (35), a relay IV (36), a restart button (38), a power socket (39), a floor heating temperature controller (40), a water heater controller (41) and an interlocking relay switch (42), the relay III (35) is electrically connected with the water supply circulating pump I (17), the relay IV (36) is electrically connected with the water supply circulating pump II (21), the interlocking relay switch (42) is wirelessly connected with the water supply circulating pump I (17), the DC switch power supply (32) is electrically connected with the interlocking relay switch (42), the relay I (33), the relay II (34), the relay III (35), the relay IV (36), the relay V (37), the restart button (38), the water storage bucket temperature controller (3) and the floor heating temperature controller (40), the water heater controller (41) is electrically connected with the water heater (4), and the temperature measuring probe of the floor heating temperature controller (40) is located on the backwater interface III (24) of the floor heating water circulation.

6. A central hot water circulation system according to claim 2, wherein The shell (1) is provided with a mounting template (59), and the mounting template (59) is provided with an indoor water supply interface A (13), an indoor backwater interface A (14), an indoor water supply interface B (18), an indoor backwater interface B (19), an indoor water supply interface C (22), an indoor backwater interface C (23), a power supply socket (43), a tap water supply port (44) and a natural gas interface (45).

7. A central hot water circulation system according to claim 6, wherein The backwater main pipe (8) is provided with a tap water inlet (46), the tap water inlet (46) is located upstream of the temperature measuring probe of the water storage bucket temperature controller (3), and the tap water inlet (46) is connected with the tap water supply port (44).

8. A central hot water circulation system according to claim 7, wherein The temperature measuring probe of the water storage bucket temperature controller (3) is located on the backwater main pipe (8) and downstream of the tap water inlet (46), the backwater interface I (16), the backwater interface II (20) and the backwater interface III (24).

9. A central hot water circulation system according to claim 2, wherein The water heater (4) is a gas water heater or an electric water heater.

10. A central hot water circulation system according to claim 2, wherein The water supply end of the water storage bucket (2) is connected with the water supply main pipe (6) through a water supply valve (47), and the backwater end of the water storage bucket (2) is connected with the backwater main pipe (8) through a backwater valve (48). The shell (1) is provided with an electrical control box (29), the electrical control box (29) is provided with an air switch (30), an electric leakage protector (31), a DC switch power supply (32), a relay III (35), a relay IV (36), a restart button (38), a power socket (39), a floor heating temperature controller (40), a water heater controller (41) and an interlocking relay switch (42), the relay III (35) is electrically connected with the water supply circulating pump I (17), the relay IV (36) is electrically connected with the water supply circulating pump II (21), the interlocking relay switch (42) is wirelessly connected with the water supply circulating pump I (17), the DC switch power supply (32) is electrically connected with the interlocking relay switch (42), the relay I (33), the relay II (34), the relay III (35), the relay IV (36), the relay V (37), the restart button (38), the water storage bucket temperature controller (3) and the floor heating temperature controller (40), the water heater controller (41) is electrically connected with the water heater (4), and the temperature measuring probe of the floor heating temperature controller (40) is located on the backwater interface III (24) of the floor heating water circulation. The shell (1) is provided with a mounting template (59), and the mounting template (59) is provided with an indoor water supply interface A (13), an indoor backwater interface A (14), an indoor water supply interface B (18), an indoor backwater interface B (19), an indoor water supply interface C (22), an indoor backwater interface C (23), a power supply socket (43), a tap water supply port (44) and a natural gas interface (45). The backwater main pipe (8) is provided with a tap water inlet (46), the tap water inlet (46) is located upstream of the temperature measuring probe of the water storage bucket temperature controller (3), and the tap water inlet (46) is connected with the tap water supply port (44). The temperature measuring probe of the water storage bucket temperature controller (3) is located on the backwater main pipe (8) and downstream of the tap water inlet (46), the backwater interface I (16), the backwater interface II (20) and the backwater interface III (24). The water heater (4) is a gas water heater or an electric water heater. The water supply end of the water storage bucket (2) is connected with the water supply main pipe (6) through a water supply valve (47), and the backwater end of the water storage bucket (2) is connected with the backwater main pipe (8) through a backwater valve (48).

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