Water flow charging type pipe-in-pipe hot water directional circulating system

Abstract

The invention belongs to the technical field of domestic water, and particularly relates to a water flow charging type pipe-in-pipe hot water directional circulating system which comprises a water heater, a pipe-in-pipe pipeline and a circulating pump. Wherein at least one pipe-in-pipe branch of the pipe-in-pipe pipeline is provided with a water flow power generation device, and the water flow power generation device comprises a water flow power generation module which is provided with a driving wheel and a power generator which are installed on the pipe-in-pipe branch; the energy storage module is used for storing the electric energy generated by the generator and supplying power; and the circulating electric control valve is mounted on the pipe-in-pipe branch and used for controlling the liquid inlet channel and the backflow channel of the pipe-in-pipe branch to be opened or closed. Weak current can be directly provided for internal electric equipment and external electric equipment through the energy storage module, and automatic charging is achieved, so that water and electricity separation is achieved, the tedious procedure of strong current wiring of a whole room is reduced, and the decoration cost is saved. Meanwhile, the harm of weak current to human bodies is low, and the electricity utilization safety of the toilet is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of domestic water, and in particular relates to a water flow charging type tube-in-tube hot water directional circulation system. Background Art

[0002] Electric leakage in the bathroom happens from time to time in daily life, and this problem should not be underestimated. When the leakage is mild, it will cause damage to various electrical equipment and affect normal use; once the situation is serious, the current will directly threaten the user's life safety and cause irreversible tragedy. Therefore, it is necessary to attach great importance to the safety of electricity use in the bathroom and take practical and effective measures to prevent it.

[0003] At present, with the emergence of smart faucets, smart showers, and smart toilets, there are more and more electricity usage scenarios in the bathroom. It is necessary to add sockets near basins, shower rooms, toilets, etc. to meet user needs, which further increases the circuit wiring area and the risk of leakage. Summary of the invention

[0004] The object of the present invention is to provide a water flow charging type tube-in-tube hot water directional circulation system which has a simple structure and can realize automatic energy storage and water-electricity separation.

[0005] The object of the present invention is achieved in that:

[0006] A water flow charging type tube-in-tube hot water directional circulation system comprises: a water heater having a water heater outlet and a water heater return hole; a tube-in-tube pipeline having a liquid inlet channel connected to the water heater outlet and a return channel connected to the water heater return hole, and a circulation pump arranged at the liquid inlet end of the liquid inlet channel or the return end of the return channel; wherein at least one tube-in-tube branch of the tube-in-tube pipeline is provided with a water flow power generation device, which comprises: a water flow power generation module having a driving wheel and a generator installed on the tube-in-tube branch; an energy storage module for storing electric energy generated by the generator and supplying power; a circulation electric control valve installed on the tube-in-tube branch for controlling the conduction or closing of the liquid inlet channel and the return channel of the tube-in-tube branch; when the energy storage module is at low power, the circulation electric control valve and the circulation pump are opened, and the water flow formed by the tube-in-tube branch can drive the driving wheel to rotate and enable the generator to generate electricity, and charge the energy storage module.

[0007] The present invention is further provided that the water flow power generation device also includes a first control module, which is electrically connected to the energy storage module and can directly or indirectly control the operation of the circulating electric control valve and the circulating pump; the energy storage module includes an energy storage battery and a power detection unit. When the power detection unit detects that the power of the energy storage battery is lower than a predetermined power value, the first control module can directly or indirectly control the operation of the circulating pump and the opening of the circulating electric control valve, and the water flows from the liquid inlet channel of the pipe-in-pipe branch to the return channel, thereby realizing power generation by the water flow power generation module and charging the energy storage battery.

[0008] The present invention is further provided that the power generation device also includes a signal transmitting module for connecting to the first control module; the circulating pump is connected to a pump control device, which includes: a second control module for controlling the operation of the circulating pump; and a signal receiving module for receiving the control signal of the signal transmitting module and feeding it back to the second control module.

[0009] The present invention is further provided that the energy storage module has a wiring port for supplying power to external electrical equipment, and the wiring port is used to connect one or more of a smart faucet, a smart shower, a smart toilet, and a lighting lamp.

[0010] The present invention is further provided with a tube-in-tube installation joint on the tube-in-tube branch, the tube-in-tube installation joint having at least a tube-in-tube connection end connected to the tube-in-tube pipeline and a circulation valve connection end for installing a circulation electric control valve, the driving wheel is installed in the tube-in-tube connection end connected to the liquid inlet channel, and the generator is installed on the outside of the tube-in-tube installation joint.

[0011] The present invention is further provided that the tube-in-tube installation joint also has a tube-in-tube liquid outlet end capable of connecting the liquid inlet channel and the reflux channel, and the tube-in-tube liquid outlet end is used for installing a temperature control delay valve core and / or a hot water control valve.

[0012] The present invention is further provided with a first control module connected to a switch module and a temperature detection module arranged in the liquid outlet end of the tube-in-tube. After the switch module is turned on, when the water temperature detected by the temperature detection module is lower than the water temperature set value, the first control module controls the circulation pump to work and the circulation electric control valve to open, so as to realize the internal circulation of the tube-in-tube branch.

[0013] The present invention is further provided with a constant temperature water outlet device installed in the pipe-in-pipe branch, which includes: a hot water outlet pipe connected to the outlet end of the pipe-in-pipe; an electric hot water control valve installed on the hot water outlet pipe and used to control the amount of hot water; a cold water outlet pipe used to connect the cold water inlet end of the cold water pipeline; and an electric cold water control valve installed on the cold water outlet pipe and used to control the amount of cold water; wherein the outlet ends of the cold water outlet pipe and the hot water outlet pipe converge to form a constant temperature water installation port, and the electric cold water control valve and the electric hot water control valve are electrically connected to the energy storage module.

[0014] The present invention is further provided with a starting valve at the starting section of the pipe-in-pipe pipeline, the starting valve having a pipe-in-pipe mounting end connected to the pipe-in-pipe pipeline, a first liquid inlet mounting end for connecting to a liquid inlet channel, a second liquid inlet mounting end for connecting to a reflux channel, and a reflux mounting end, the second liquid inlet mounting end is provided with a first check valve capable of inletting liquid, the reflux mounting end is provided with a second check valve capable of reflux, the water heater outlet is connected to a hot water inlet pipeline, the hot water inlet pipeline is connected to the second liquid inlet mounting end, and is connected to the first liquid inlet mounting end through a circulating pump; the water heater reflux hole is connected to the reflux mounting end through the liquid outlet pipeline.

[0015] The present invention further provides that a return pipeline and an electric three-way valve for connecting to the second control module are arranged between the hot water inlet pipeline and the outlet pipeline, and the electric three-way valve has a first connecting end connected to the return pipeline and two second connecting ends connected to the outlet pipelines.

[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0017] 1. The water flow power generation device of the present invention generates electricity through directional water flow, and stores it through the energy storage module for use by internal and external electrical equipment (smart faucets, smart showers, and smart toilets). The energy storage module provides weak electricity, which directly supplies power to nearby weak-current electrical appliances. In this way, there is no need to arrange 220V strong-current sockets near basins, shower rooms, toilets, etc., thereby achieving water-electricity separation, reducing the cumbersome process of strong-current wiring in the entire room, and saving decoration costs. In addition, even if the energy storage module or the corresponding external electrical equipment leaks electricity, the weak current is less harmful to the human body and will not endanger life, thus ensuring the safety of electricity use in the bathroom.

[0018] 2. The energy storage module of the present invention is provided with an energy storage battery and a power detection unit. When the power detection unit detects that the power of the energy storage battery is lower than the preset power value, the first control module directly or indirectly controls the circulation pump to start working, and at the same time controls the circulation electric control valve to open, so that the pipe-in-pipe branch can realize internal water circulation, thereby allowing the water flow power generation module to generate electricity and realize automatic charging of the energy storage battery.

[0019] 3. The present invention is provided with a reflux pipeline and an electric three-way valve between the hot water inlet pipeline and the outlet pipeline. When the energy storage module enters the automatic charging mode, the second control module of this embodiment will control the electric three-way valve to work at the same time when controlling the circulation pump to turn on, so that the electric three-way valve closes the water heater reflux hole of the water heater and connects the second connection end to the first connection end, which is equivalent to connecting the outlet pipeline and the hot water inlet pipeline. The water in the pipe-in-pipe pipeline is circulated without consumption, thereby reducing the waste of hot water resources of the water heater and saving electricity costs.

[0020] 4. The present invention is provided with a sterilizer for connecting to the second control module on the return pipeline. When the energy storage module enters the automatic charging mode, the second control module will control the sterilizer to work at the same time when controlling the circulation pump to turn on, so as to realize internal disinfection and ensure water safety.

[0021] 5. The energy storage module of the present invention can also provide power for the constant temperature water outlet device to meet the needs of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a structural schematic diagram of the first water flow charging type tube-in-tube hot water directional circulation system of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the starting valve and the circulating pump of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the first water flow power generation device of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the second water flow power generation device of the present invention.

[0026] Figure 5 It is a circuit principle diagram of the water flow power generation device of the present invention.

[0027] Figure 6 1 is a circuit diagram of the pump control device of the present invention.

[0028] Figure 7 It is a structural schematic diagram of the second water flow charging type tube-in-tube hot water directional circulation system of the present invention.

[0029] Figure 8 It is a structural schematic diagram of the third water flow charging type tube-in-tube hot water directional circulation system of the present invention.

[0030] Fig. 9 It is a structural schematic diagram of the third water flow power generation device of the present invention.

[0031] Fig.10 It is a structural schematic diagram of the constant temperature water outlet device of the present invention.

[0032] The meaning of the symbols in the figure:

[0033] Water heater 1; pipe-in-pipe pipeline 2; start valve 3; circulation pump 4; water flow power generation device 5; pump control device 6; return pipeline 7; electric three-way valve 8; disinfector 9;

[0034] Water heater liquid inlet 11; water heater liquid outlet 12; tap water connecting pipeline 13; liquid inlet check valve 14; water heater reflux hole 15; hot water liquid inlet pipeline 16; liquid outlet pipeline 17;

[0035] Liquid inlet channel 21; return channel 22; pipe-in-pipe installation joint 23; pipe-in-pipe connection end 231; circulation valve connection end 232; pipe-in-pipe liquid outlet end 233; temperature control delay valve core 24; hot water control valve 25;

[0036] Tube-in-tube mounting end 31; first liquid inlet mounting end 32; second liquid inlet mounting end 33; reflux mounting end 34; first check valve 35; second check valve 36;

[0037] Constant temperature water outlet device 40; hot water outlet pipe 41; electric hot water control valve 42; cold water outlet pipe 43; electric cold water control valve 44; constant temperature water installation port 45;

[0038] Water flow power generation module 51; driving wheel 511; generator 512; energy storage module 52; circulation electric control valve 53; first control module 54; signal transmission module 55; switch module 56; temperature detection module 57; external electrical equipment 58;

[0039] Second control module 61; signal receiving module 62; power supply 63;

[0040] Cold water line 100. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with specific embodiments:

[0042] Embodiment 1:

[0043] like Figure 1 As shown, a water flow charging tube-in-tube hot water directional circulation system mainly includes a water heater 1, a tube-in-tube pipeline 2, a starting valve 3, a circulation pump 4, a water flow power generation device 5 and a pump control device 6. It is mainly used in the field of smart toilets in residences, villas, and hotels, and can also be used in rooms that require hot water, such as kitchens, and is mainly used to provide hot water.

[0044] The water heater 1 has a water heater inlet hole 11, a water heater outlet hole 12 and a water heater reflux hole 15. The water heater inlet hole 11 is connected to a tap water connection pipeline. The tap water connection pipeline 13 is provided with a liquid inlet check valve 14. The liquid inlet check valve 14 can prevent the tap water from flowing back and ensure that the water heater 1 can smoothly flow water. The water heater outlet hole 12 is connected to a hot water inlet pipeline 16. The hot water inlet pipeline 16 is a single-channel ordinary hot water pipeline. The water heater reflux hole 15 is provided with a liquid outlet pipeline 17. The liquid outlet pipeline 17 is a single-channel ordinary hot water pipeline for hot water reflux. In other embodiments, the water heater inlet hole 11 and the water heater reflux hole 15 can be shared, that is, the liquid outlet pipeline 17 can be installed on the tap water connection pipeline 13 located between the water heater inlet hole 11 and the liquid inlet check valve 14 through a three-way joint.

[0045] A circulation pump 4 is arranged on the hot water inlet pipeline 16 or the outlet pipeline 17, that is, the circulation pump 4 is arranged at the inlet end of the inlet channel 21 or the reflux end of the reflux channel 22. In this embodiment, the circulation pump 4 is arranged on the hot water inlet pipeline 16 and connects the inlet end of the inlet channel 21 and the water heater inlet hole 11 of the water heater 1.

[0046] The pipe-in-pipe pipeline 2 mainly consists of a pipe-in-pipe and a pipe-in-pipe joint. The pipe-in-pipe includes an inner pipe and an outer pipe coaxially arranged, which are connected by a connecting portion. An inner flow channel is formed in the inner pipe, and an outer flow channel is formed between the inner pipe and the outer pipe. In this embodiment, the inner flow channel is a liquid inlet channel 21 connected to the water heater outlet 12, and the outer flow channel is a return channel 22 connected to the water heater return hole 15. Generally, the pipe-in-pipe pipeline 2 is divided into a main pipe and a plurality of pipe-in-pipe branches arranged on the main pipe. Both the main pipe and the main pipe have inner flow channels and outer flow channels. The pipe-in-pipe branches are used to be arranged in various rooms or water use locations.

[0047] like Figure 2 As shown, in order to facilitate the connection of the circulation pump 4, the hot water inlet pipeline 16 and the outlet pipeline 17 in the pipe-in-pipe pipeline, a starting valve 3 is provided at the starting section of the pipe-in-pipe pipeline 2 in this embodiment, and the starting valve 3 has a pipe-in-pipe installation end 31 connected to the pipe-in-pipe pipeline 2, a first liquid inlet installation end 32 for connecting the liquid inlet channel 21, a second liquid inlet installation end 33 for connecting the reflux channel 22, and a reflux installation end 34. In this embodiment, the pipe-in-pipe installation end 31 is connected to the main pipeline of the pipe-in-pipe pipeline 2 through a pipe-in-pipe joint, the first liquid inlet installation end 32 is connected to the inner flow channel, and the second liquid inlet installation end 33 and the reflux installation end 34 are both connected to the outer flow channel.

[0048] The second liquid inlet installation end 33 is provided with a first check valve 35 capable of liquid inlet, and the reflux installation end 34 is provided with a second check valve 36 capable of reflux. The water heater outlet hole 12 is connected to a hot water inlet pipeline 16, which is connected to the second liquid inlet installation end 33 and is connected to the circulation pump 4 and the first liquid inlet installation end 32 of the start valve 3 in sequence through a three-way valve; the water heater reflux hole 15 is connected to the reflux installation end 34 through a liquid outlet pipeline 17. In the pipe-in-pipe pipeline 2, the end of the pipe-in-pipe branch can be connected to the inner flow channel and the outer flow channel. When the circulation pump 4 is not started, the hot water of the water heater 1 can enter from the first liquid inlet installation end 32 and the second liquid inlet installation end 33 (the first check valve 35 is open) through the hot water inlet pipeline 16, so that the inner flow channel and the outer flow channel can discharge hot water at the same time, meeting the normal water demand of the pipe-in-pipe branch. At this time, the reflux installation end 34 generally does not discharge liquid, and the pressure generally does not open the second check valve 36. When the circulation pump 4 is started, the water pressure in the inner flow channel will be greater than the water pressure in the outer flow channel, causing the first check valve 35 of the second liquid inlet mounting end 33 to always be in a closed state, and the second check valve 36 of the reflux mounting end 34 can be opened, thereby realizing the circulation of hot water on the water heater, the hot water inlet pipeline 16, the inner flow channel, the outer flow channel, and the liquid outlet pipeline 17, replacing hot water for the pipe-in-pipe pipeline 2, allowing the user to use hot water as soon as possible, thereby improving the user experience.

[0049] In general, the liquid outlet of this embodiment provides hot water, so it needs to be used in conjunction with the cold water pipeline 100 connected to the tap water pipe to meet the demand for hot and cold water. Specifically, in this embodiment, a hot water control valve 25 is installed on the main pipeline or the branch pipeline in the pipeline. The hot water control valve 25 is generally a hot water angle valve. The cold water pipeline 100 will be provided with a cold water angle valve. The hot water angle valve is generally connected to the hot water inlet end of the faucet or shower. The cold water angle valve is generally connected to the cold water inlet end of the faucet or shower. The cold water angle valve and the hot water angle valve form a hot and cold water pipe installation structure at the installation location of a conventional basin or shower.

[0050] like Figure 3 , 5 As shown, at least one pipe-in-pipe branch of the pipe-in-pipe pipeline 2 is provided with a water flow power generation device 5 capable of generating and storing electricity, which includes a water flow power generation module 51, an energy storage module 52, a first control module 54, a signal transmission module 55, a switch module 56 and a temperature detection module 57.

[0051] The pipe-in-pipe branch is provided with a pipe-in-pipe installation joint 23, which at least has a pipe-in-pipe connection end 231 for connecting the pipe-in-pipe pipeline 2, a circulation valve connection end 232 for installing the circulation electric control valve 53, and a pipe-in-pipe liquid outlet end 233 that can respectively connect the liquid inlet channel 21 and the reflux channel 22. The pipe-in-pipe liquid outlet end 233 is used to install a temperature control delay valve core 24 and / or a hot water control valve 25, and the hot water control valve 25 is a hot water angle valve or an electric control valve. In this embodiment, the temperature control delay valve core 24 is used for preferential liquid discharge from the inner flow channel, which includes a temperature control device and a temperature control valve core. The temperature control valve core seals the outer flow channel. When the temperature control device senses the hot water in the inner flow channel, the temperature control device drives the temperature control valve core to open the outer flow channel to achieve liquid discharge from the inner and outer flow channels together. The specific structure is detailed in CN202022293558.7, which will not be repeated here.

[0052] The circulation valve connection end 232 is provided with a circulation electric control valve 53 for controlling the opening and closing of the inner and outer flow channels of the pipe-in-pipe branch. The circulation electric control valve 53 is a normally closed electric control valve. Under normal circumstances, the circulation electric control valve 53 closes the inner flow channel outlet of the circulation valve connection end 232, separates the inner and outer flow channels of the pipe-in-pipe branch, and makes the pipe-in-pipe branch in a non-circulating state. The circulation electric control valve 53 is electrically connected to the energy storage module 52 and the first control module 54. The first control module 54 can control the opening and closing of the circulation electric control valve 53. When the circulation electric control valve 53 is opened, the water flow loop is opened; when the electric control valve 53 is closed, the water flow loop is closed. That is, when the circulation electric control valve 53 is opened, the inner flow channel and the outer flow channel of the pipe-in-pipe branch are interconnected, and the pipe-in-pipe branch is in a circulation state. At this time, a water flow loop can be formed through the water heater 1, the hot water inlet pipeline 16, the circulation pump 4, the inner flow channel, the outer flow channel, and the liquid outlet pipeline 17 in sequence, and the water flow can realize internal circulation.

[0053] The water flow power generation module 51 has a driving wheel 511 and a generator 512 installed on the pipe-in-pipe branch. Specifically, the driving wheel 511 is rotatably arranged in the liquid inlet channel 21 of the pipe-in-pipe connection end 231, and the generator 512 is installed on the outside of the pipe-in-pipe installation joint 23. The main shaft of the generator 512 extends into the inside of the liquid inlet channel 21 and is fixedly connected to the driving wheel 511. When the pipe-in-pipe liquid outlet end 233 discharges liquid or the liquid at the circulation valve connection end 232 circulates (that is, when the circulation electric control valve 53 is opened for circulation), the water flow in the liquid inlet channel 21 of the pipe-in-pipe installation joint 23 can drive the driving wheel 511 to rotate, and realize the generator 512 to generate electricity.

[0054] like Figure 3 As shown, the driving wheel 511 is a bladed impeller, including an impeller body and circumferentially distributed blades. The liquid inlet channel 21 of the tube-in-tube connecting end 231 is provided with an impeller mounting cavity, a portion of the impeller mounting cavity overlaps with the liquid inlet channel 21, the driving wheel 511 is located in the impeller mounting cavity, and one side of the blades is located in the liquid inlet channel 21 of the tube-in-tube connecting end 231. The generator 512 is fixed on the outside of the tube-in-tube connecting end 231; when there is water flow in the liquid inlet channel 21 of the tube-in-tube connecting end 231, the blades of the driving wheel 511 rotate accordingly under the action of the water flow, thereby realizing power generation by the generator.

[0055] like Figure 4 As shown, in another embodiment, the driving wheel 511 is a spiral impeller, which is directly installed in the liquid inlet channel 21 of the tube-in-tube connecting end 231. At this time, the generator 512 is installed between the tube-in-tube liquid outlet end 233 and the circulation valve connecting end 232. The main shaft of the generator 512 extends into the inner cavity of the tube-in-tube mounting joint 23 and is fixedly connected to the spiral impeller; when there is water flow in the liquid inlet channel 21 of the tube-in-tube connecting end 231, the spiral blades of the driving wheel 511 rotate accordingly under the action of the water flow, thereby realizing power generation of the generator.

[0056] The energy storage module 52 is used to store the electric energy generated by the generator 512, and can also supply power to the circulating electric control valve 53, the first control module 54, the signal transmitting module 55, the switch module 56, the temperature detection module 57 and the external electrical equipment 58. The energy storage module 52 has a wiring port for supplying power to the external electrical equipment 58, and the wiring port can be connected to the external electrical equipment 58, which includes weak-current electrical appliances such as lighting, smart faucets, smart showers, and smart toilets.

[0057] The water flow power generation device 5 of this embodiment can generate electricity through directional water flow, and store it through the energy storage module 52 for use by internal and external electrical equipment. The energy storage module 52 provides weak electricity, which directly supplies power to nearby weak electrical appliances. In this way, there is no need to arrange 220V strong power sockets near the basin, shower room, toilet, etc., thereby realizing the separation of water and electricity, reducing the cumbersome wiring process of the entire room, and saving decoration costs. In addition, even if the energy storage module 52 or the corresponding external electrical equipment 58 leaks electricity, the weak electricity is less harmful to the human body and will not endanger life, thereby ensuring the safety of electricity use in the bathroom.

[0058] In a frequently used bathroom or kitchen, each hot water flow will drive the driving wheel 511 to rotate and make the generator 512 generate electricity, realizing the passive charging of the energy storage module (i.e., in the passive charging mode of the energy storage module). In this case, the power of the energy storage module 52 can basically meet the normal needs of the applied electrical equipment. However, for the pipe-in-pipe branch that has not been used for a long time, the power of the energy storage module 52 on the pipe-in-pipe branch will decay and cannot provide power to the electrical equipment, which will affect the normal use of the electrical equipment.

[0059] To this end, the energy storage module 52 needs to have an automatic charging mode for the energy storage module. The energy storage module 52 includes an energy storage battery and a power detection unit. The power detection unit can detect the power of the energy storage battery in real time or at a fixed time and feed it back to the first control module 54. When the power detection unit detects that the power of the energy storage battery is lower than the predetermined power value, the first control module 54 directly or indirectly controls the circulation pump 4 to start working, and at the same time controls the circulation electric control valve 53 to open, so that the pipe-in-pipe branch realizes the water flow circulation of the inner and outer flow channels, so that the water flow power generation module 51 generates electricity and realizes automatic charging of the energy storage battery. When the power detection unit detects that the power of the energy storage battery is higher than the power health value, the first control module 54 directly or indirectly controls the circulation pump 4 to close, and at the same time controls the circulation electric control valve 53 to close, the water flow stops, and the charging of the energy storage module 52 ends.

[0060] In general, since the water flow power generation device 5 is arranged near the water-using equipment in the room, and the circulating pump is arranged on the equipment platform or in the equipment room outside the room, there is a certain distance between the two. In order to reduce the wiring, the first control module 54 of this embodiment is indirectly operated by the circulating pump 4. Specifically, the water flow power generation device 5 also includes a signal transmitting module 55 connected to the first control module 54, and the signal transmitting module 55 is a wireless signal transmitting module, specifically a cellular data transmitting module or a radio frequency (RF) transmitting module or a Bluetooth transmitting module or a Wi-Fi transmitting module or a Zigbee transmitting module. Among them, the energy storage module 52, the first control module 54, and the signal transmitting module 55 are arranged in the first control box, and one end of the switch module 56 and the temperature detection module 57 are installed on the first control box, thereby forming an intelligent energy storage wireless transmitting controller, and the intelligent energy storage wireless transmitting controller is provided with a power supply connector for external electrical equipment. Preferably, the intelligent energy storage wireless transmitting controller is placed near water-using equipment such as faucets and showers, such as in a storage cabinet of a basin or in an equipment space of a wall.

[0061] like Figure 6 As shown, the circulation pump 4 is connected to a pump control device 6, which includes a second control box, a second control module 61 for controlling the operation of the circulation pump 4, a signal receiving module 62 connected to the second control module 61, and a power supply 63. The second control box is provided with the second control module 61 and the signal receiving module 62, and the power supply 63 is connected via a power connection line, thereby forming an intelligent wireless receiving controller. The signal receiving module 62 is a wireless signal receiving module, specifically a cellular data receiving module or a radio frequency (RF) receiving module or a Bluetooth receiving module or a Wi-Fi receiving module or a Zigbee receiving module. When the signal receiving module 62 receives the signal sent by the signal transmitting module 55, it is fed back to the second control module 61, thereby controlling the circulation pump 4 to work.

[0062] The power supply 63 of this embodiment is the mains electricity and supplies power to the pump control device 6 and the circulation pump 4. Preferably, the water heater 1, the pump control device 6 and the circulation pump 4 are arranged on the equipment balcony outside the bathroom or the kitchen, thereby reducing the strong power layout lines in the bathroom or the kitchen, and also reducing the noise impact of the circulation pump 4.

[0063] In another embodiment, the energy storage module 52 is also provided with a power display unit. When the energy storage module 52 displays low power, the user or maintenance personnel can manually start the circulation pump 4 and the circulation electric control valve 53 to realize water circulation in the pipe-in-pipe branch, thereby charging the energy storage battery of the energy storage module 52.

[0064] In addition, after not being used for a period of time, the water temperature will slowly drop because the water in the pipe-in-pipe pipeline is not flowing. At this time, when the user turns on the water-using equipment, he needs to drain some of the cold water before hot water can come out. This is an unfriendly experience for high-end villas or hotels.

[0065] To this end, the present embodiment sets a preheating mode for the pipe-in-pipe branch. The first control module 54 is connected to a switch module 56 and a temperature detection module 57 arranged near the hot water interface 211. The switch module 56 includes one or more of an infrared sensor, a radar, a laser sensor, and a human body sensor, and is arranged at a location where the user appears, such as near the door, for detecting whether the user is in the room. When the user is detected in the room, the switch module 56 sends an instruction to the first control module 54, and the first control module 54 reads the water temperature of the temperature detection module 5 in real time. The temperature detection module 5 is preferably a temperature probe. After the water temperature detected by the temperature detection module 57 is lower than the water temperature setting value, the first control module 54 sends a signal to drive the circulation pump 4 to work and a signal to control the circulation electric control valve 53 to open through the signal transmission module 55, so that the pipe-in-pipe branch performs internal hot water circulation, so that the water temperature of the internal and external flow channels reaches a predetermined temperature. In this way, when the user turns on the faucet, shower and other water-using equipment, hot water can be obtained at the first time, which increases the user's experience. At this time, the energy storage module also enters the charging mode.

[0066] The switch module 56 may also be a mechanical switch.

[0067] Embodiment 2:

[0068] Based on the first embodiment, this embodiment adds a reflux pipeline 7 and an electric three-way valve 8.

[0069] like Figure 7 As shown, a return line 7 and an electric three-way valve 8 are provided between the hot water inlet line 16 and the outlet line 17, and the electric three-way valve 8 has a first connection end connected to the return line 7 and two second connection ends connected to the outlet line 17. The electric three-way valve 8 is controlled by the second control module 61. Generally, the two second connection ends of the electric three-way valve 8 are in a normally open state, and hot water can be returned to the water heater 1.

[0070] When the energy storage module 52 enters the automatic charging mode, as in the solution of the first embodiment, the water heater 1, the hot water inlet pipeline 16, the circulation pump 4, the inner flow channel, the outer flow channel, and the outlet pipeline 17 form a water flow loop. Since the water-using equipment is not working, incorporating the water heater 1 into the water flow loop will increase the waste of hot water. In order to achieve energy saving, when the energy storage module 52 enters the automatic charging mode, the second control module 61 of this embodiment will control the electric three-way valve 8 to work at the same time when controlling the circulation pump 4 to turn on, so that the electric three-way valve 8 closes the water heater reflux hole 15 of the water heater 1, and connects the second connection end to the first connection end, which is equivalent to connecting the outlet pipeline 17 and the hot water inlet pipeline 16, and the water in the pipe-in-pipe pipeline is circulated without consumption, thereby reducing the waste of hot water resources of the water heater and saving electricity costs.

[0071] Embodiment three:

[0072] like Figure 7 As shown, in this embodiment, based on the second embodiment, a sterilizer 9 for connecting to the second control module 61 is provided on the return line 7. The sterilizer 9 is preferably an ultraviolet sterilizer for sterilizing the water flow inside the system.

[0073] That is, when the energy storage module 52 enters the automatic charging mode, the second control module 61 will control the ultraviolet sterilizer to work at the same time when controlling the circulation pump 4 to turn on, so as to achieve internal disinfection and ensure water safety.

[0074] In another embodiment, the sterilizer 9 may also be arranged at the starting position of the liquid outlet pipeline 17 or the hot water inlet pipeline 16 .

[0075] Embodiment 4:

[0076] The embodiment 1 is basically the same, and the difference is that:

[0077] like Fig. 9 As shown, another pipe-in-pipe installation joint 23 is provided on the pipe-in-pipe branch, and the pipe-in-pipe installation joint 23 has a pipe-in-pipe connection end 231 connected to the pipe-in-pipe pipeline 2 and a circulation valve connection end 232 for installing a circulation electric control valve 53, and the circulation valve connection end 232 is provided with a circulation electric control valve 53 for controlling the opening and closing of the inner flow channel of the pipe-in-pipe branch. The pipe-in-pipe connection end 231 is provided with a water flow power generation device 5. The circulation electric control valve 53 is a normally closed electric control valve. Under normal circumstances, the circulation electric control valve 53 closes the inner flow channel outlet of the circulation valve connection end 232, that is, the pipe-in-pipe branch is in a non-circulation state. When the circulating electric control valve 53 is opened, the inner flow channel and the outer flow channel of the pipe-in-pipe branch are interconnected, and the pipe-in-pipe branch is in a circulating state. At this time, a water flow loop can be formed through the water heater 1, the hot water inlet pipeline 16, the inner flow channel, the outer flow channel, and the outlet pipeline 17 in sequence. The water flow can realize internal circulation and charge the water flow power generation device 5.

[0078] The water flow power generation device 5 of this embodiment is mainly used to supply power to external electrical equipment 58 that does not require hot water, such as a smart toilet.

[0079] Embodiment five:

[0080] On the basis of the first, second, third and fourth embodiments, at least one of the pipe-in-pipe branches is provided with a constant temperature water outlet device.

[0081] like Figure 8 , 10 As shown, the constant temperature water outlet device 40 includes a cold water outlet pipe 43, an electric cold water control valve 44 for controlling the amount of cold water, a hot water outlet pipe 41 and an electric hot water control valve 42 for controlling the amount of hot water.

[0082] A hot water outlet pipe 41 is installed at the pipe-in-pipe outlet end 233 of the pipe-in-pipe installation joint 23, and an electric hot water control valve 42 is installed on the hot water outlet pipe 41; a cold water outlet pipe 43 is installed on the cold water interface of the cold water pipeline 100, and an electric cold water control valve 44 is arranged on the cold water outlet pipe 43. The cold water outlet pipe 43 and the hot water outlet pipe 41 converge to form a constant temperature water installation port 45, and the driving units of the electric cold water control valve 44 and the electric hot water control valve 42 are servo motors, and are electrically connected to the energy storage module 52.

[0083] The constant temperature water outlet device of this embodiment also includes a constant temperature control module for controlling the electric cold water control valve 44 and the electric hot water control valve 42. The constant temperature water installation port 45 is provided with a temperature detection module 57. The constant temperature control module quickly adjusts the size of the electric cold water control valve 44 and the electric hot water control valve 42 through the outlet water temperature sensed by the temperature detection module 57, that is, adjusts the cold water volume of the cold water outlet pipe 43 and the hot water volume of the hot water outlet pipe 41, thereby accurately controlling the temperature of the constant temperature water installation port 45 to achieve constant temperature water outlet.

[0084] The constant temperature control module of this embodiment may be a separate control module, or may be directly integrated into the first control module 54 .

[0085] Embodiment six:

[0086] This embodiment is basically the same as the solutions of embodiments 1 to 5, except that the outer flow channel is a liquid inlet channel 21 connected to the liquid outlet 12 of the water heater, and the inner flow channel is a reflux channel 22 connected to the reflux hole 15 of the water heater.

[0087] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A water flow charging type tube-in-tube hot water directional circulation system, characterized in that: include: A water heater (1) having a water heater liquid outlet (12) and a water heater return hole (15); The pipe-in-pipe pipeline (2) comprises a liquid inlet channel (21) connected to the liquid outlet hole (12) of the water heater and a return channel (22) connected to the return hole (15) of the water heater. A circulation pump (4) is arranged at the liquid inlet end of the liquid inlet channel (21) or the reflux end of the reflux channel (22); Wherein, at least one pipe-in-pipe branch of the pipe-in-pipe pipeline (2) is provided with a water flow power generation device (5), which comprises: A water flow power generation module (51) comprising a driving wheel (511) and a generator (512) mounted on the pipe-in-pipe branch; An energy storage module (52) for storing the electric energy generated by the generator (512) and supplying power; A circulation electric control valve (53), installed on the pipe-in-pipe branch, used to control the opening or closing of the liquid inlet channel (21) and the reflux channel (22) of the pipe-in-pipe branch; When the energy storage module (52) is at low power, the circulation electric control valve (53) and the circulation pump (4) are opened, and the water flow formed by the pipe-in-pipe branch can drive the driving wheel (511) to rotate and enable the generator (512) to generate electricity, thereby charging the energy storage module (52).

2. A water flow charging type tube-in-tube hot water directional circulation system according to claim 1, characterized in that: The water flow power generation device (5) further comprises a first control module (54), which is electrically connected to the energy storage module (52) and is capable of directly or indirectly controlling the operation of the circulating electric control valve (53) and the circulating pump (4); The energy storage module (52) comprises an energy storage battery and an electric quantity detection unit. When the electric quantity detection unit detects that the electric quantity of the energy storage battery is lower than a predetermined electric quantity value, the first control module (54) can directly or indirectly control the circulation pump (4) to work and the circulation electric control valve (53) to open, so that water flows from the liquid inlet channel (21) of the pipe-in-pipe branch to the return channel (22), thereby realizing the water flow power generation module (51) to generate electricity and charge the energy storage battery.

3. A water flow charging type tube-in-tube hot water directional circulation system according to claim 2, characterized in that: The power generation device (5) further comprises a signal transmission module (55) for connecting to the first control module (54); The circulation pump (4) is connected to a pump control device (6), which comprises: A second control module (61) is used to control the operation of the circulation pump (4); and A signal receiving module (62) is used to receive the control signal of the signal transmitting module (55) and feed it back to the second control module (61).

4. A water flow charging type tube-in-tube hot water directional circulation system according to claim 3, characterized in that: The energy storage module (52) has a connection port for supplying power to an external electrical device (58), and the connection port is used to connect one or more of a smart faucet, a smart shower, a smart toilet, and a lighting lamp.

5. A water flow charging type tube-in-tube hot water directional circulation system according to any one of claims 1 to 4, characterized in that: The pipe-in-pipe branch line is provided with a pipe-in-pipe installation joint (23), the pipe-in-pipe installation joint (23) having at least a pipe-in-pipe connection end (231) connected to the pipe-in-pipe line (2) and a circulation valve connection end (232) for installing a circulation electric control valve (53), the driving wheel (511) is installed in the pipe-in-pipe connection end (231) connected to the liquid inlet channel (21), and the generator (512) is installed outside the pipe-in-pipe installation joint (23).

6. A water flow charging type tube-in-tube hot water directional circulation system according to claim 5, characterized in that: The tube-in-tube installation joint (23) also has a tube-in-tube liquid outlet (233) capable of connecting the liquid inlet channel (21) and the return channel (22), and the tube-in-tube liquid outlet (233) is used to install a temperature control delay valve core (24) and / or a hot water control valve 25.

7. A water flow charging type tube-in-tube hot water directional circulation system according to claim 6, characterized in that: The first control module (54) is connected to a switch module (56) and a temperature detection module (57) disposed in the liquid outlet end (233) of the tube-in-tube. After the switch module (56) is turned on and the water temperature detected by the temperature detection module (57) is lower than the water temperature setting value, the first control module (54) controls the circulation pump (4) to work and the circulation electric control valve (53) to open, thereby realizing the internal circulation of the pipe-in-pipe branch.

8. The water flow charging type tube-in-tube hot water directional circulation system according to claim 6, characterized in that: The pipe-in-pipe branch is equipped with a constant temperature water outlet device (40), which comprises: A hot water outlet pipe (41) connected to the outlet end of the tube-in-tube (233); An electric hot water control valve (42) installed on the hot water outlet pipe (41) and used to control the amount of hot water; A cold water outlet pipe (43) for connecting to a cold water inlet end of a cold water pipeline (100); and An electric cold water control valve (44) installed on the cold water outlet pipe (43) and used to control the amount of cold water; The outlet ends of the cold water outlet pipe (43) and the hot water outlet pipe (41) converge to form a constant temperature water installation port (45), and the electric cold water control valve (44) and the electric hot water control valve (42) are electrically connected to the energy storage module (52).

9. A water flow charging type tube-in-tube hot water directional circulation system according to claim 3 or 4, characterized in that: The starting section of the pipe-in-pipe pipeline (2) is provided with a starting valve (3), the starting valve (3) comprising a pipe-in-pipe installation end (31) connected to the pipe-in-pipe pipeline (2), a first liquid inlet installation end (32) for communicating with the liquid inlet channel (21), a second liquid inlet installation end (33) for communicating with the reflux channel (22), and a reflux installation end (34), The second liquid inlet installation end (33) is provided with a first check valve (35) capable of liquid inlet, and the return flow installation end (34) is provided with a second check valve (36) capable of return flow. The water heater liquid outlet (12) is connected to a hot water liquid inlet pipeline (16), the hot water liquid inlet pipeline (16) is connected to the second liquid inlet installation end (33), and is connected to the first liquid inlet installation end (32) via a circulation pump (4); the water heater return hole (15) is connected to the return installation end (34) via a liquid outlet pipeline (17).

10. A water flow charging type tube-in-tube hot water directional circulation system according to claim 9, characterized in that: A return pipeline (7) and an electric three-way valve (8) for connecting to the second control module (61) are provided between the hot water inlet pipeline (16) and the outlet pipeline (17); the electric three-way valve (8) has a first connection end connected to the return pipeline (7) and two second connection ends connected to the outlet pipelines (17); The return line (7) is provided with a sterilizer (9) for connecting to the second control module (61).

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