Outdoor intelligent photoelectric water heater

Abstract

The utility model discloses an outdoor intelligent photoelectric water heater which comprises a shell, an intelligent control host, a displayer and a heat storage water tank. The heat storage water tank is arranged in the shell, corresponding pipelines and valves are arranged between all connectors of the heat storage water tank and all connectors of the shell, so that the heat storage water tank is communicated with the solar heat collection water tank through a circulation pipeline, and an electric heating pipe is arranged in the heat storage water tank. Water circulation heating in the solar heat collection water tank, the heat storage water tank and the connecting pipeline can be achieved by executing different circulation paths, the intelligent control host is used for conducting on-off control on all the components, and the displayer is used for displaying a control interface and parameters. The solar water heater can effectively solve the problems that a traditional solar water heater is insufficient in hot water supply in cloudy days, cold water needs to be discharged for a period of time after a faucet is opened, water pressure is unstable, hot water is suddenly cold and suddenly hot, and pipes are prone to freezing in winter, and is compact in structure, high in integration degree, easy to install, high in intelligent degree and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to water heater technical field especially is related to an outdoor intelligent photoelectric water heater. BACKGROUND

[0002] With the continuous improvement of people's living standards and the increasing emphasis on safety, energy saving and environmental protection, the performance requirements of water heaters are becoming increasingly stringent. Traditional water heaters simply rely on electricity, natural gas or solar energy, all of which have certain limitations. Electric water heaters consume a large amount of electricity, not only increasing household consumption costs, but also being environmentally unfriendly and having the risk of electric shock. The application of gas water heaters is limited by conditions and also has certain safety hazards. As we all know, solar energy is a renewable energy source that can be taken almost endlessly and used endlessly. Solar water heaters heat water by absorbing solar radiation, and have the advantages of being green, environmentally friendly, energy-saving, economical and suitable for use, etc., and can provide stable hot water supply for users, whether for bathing, laundry or kitchen water, etc., which can improve the convenience and comfort of life. However, a simple solar water heater cannot provide hot water in rainy weather or insufficient sunlight, is prone to freezing pipes in winter, has unstable hot water pressure, and also wastes water, etc. These disadvantages and many other defects have not been effectively solved for decades.

[0003] Therefore, how to create a new outdoor intelligent photoelectric water heater is one of the current important research topics. INVENTION CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a new outdoor intelligent photoelectric water heater, which solves the problems of insufficient hot water supply of traditional solar water heaters on cloudy days, the problem of having to drain a certain amount of cold water after opening the faucet, unstable water pressure, hot and cold water, and the problem of frozen pipes in winter, thereby overcoming the deficiencies of the prior art.

[0005] To solve the above technical problems, the utility model provides an outdoor intelligent photoelectric water heater, characterized by comprising a shell, an intelligent control host, a display and a heat storage water tank.

[0006] The shell is provided with five external interfaces, which are a hot water interface, a return water interface, a water inlet interface, a solar water outlet interface and a solar water inlet interface.

[0007] The heat storage water tank is arranged inside the shell, an electric heating pipe is installed inside the heat storage water tank, and the heat storage water tank is provided with a heat storage water tank inlet, a heat storage water tank outlet, a positive circulation port and a reverse circulation port.

[0008] A plurality of pipelines are arranged inside the shell, including a main water inlet section, a communication section and a hot water section.

[0009] The main up-water section is connected between the up-water interface and the solar up-water interface, and the up-water valve is installed in the main up-water section; the up-water interface is connected with a tap water pipe; and the solar up-water interface is connected with an inlet of a solar heat collecting water tank.

[0010] The communication section is connected between the solar out-water interface and the inlet of the heat storage water tank, and the booster circulating pump is installed in the communication section; the solar out-water interface is connected with an outlet of the solar heat collecting water tank.

[0011] The hot water section is connected between the outlet of the heat storage water tank and the hot water interface; the hot water interface is connected to the backwater interface through an external ring line; the backwater interface is connected to the up-water valve of the main up-water section through the backwater valve; and the faucet is arranged on the external ring line.

[0012] The positive circulation port is connected to the up-water valve of the main up-water section through the positive valve; and the reverse circulation port is connected to the up-water valve of the main up-water section through the reverse valve.

[0013] The intelligent control host is electrically connected with the up-water valve, the backwater valve, the positive valve, the reverse valve, the booster circulating pump and the electric heating pipe to realize switch control; and the display is electrically connected with the intelligent control host to display the control interface and parameters.

[0014] As an improvement of the utility model, the water supply section is further arranged in the shell, the water supply section is connected between the valve of the up-water valve and the positive circulation port, the water supply valve is installed on the water supply section, and the water supply valve is electrically connected with the intelligent control host.

[0015] Further, the heat storage temperature sensor is arranged in the heat storage water tank, and the heat collecting temperature sensor is arranged in the solar heat collecting water tank; and the heat storage temperature sensor and the heat collecting temperature sensor are electrically connected with the intelligent control host respectively.

[0016] Further, the first anti-freezing sensor is installed on the pipeline between the solar up-water interface and the water inlet of the solar heat collecting water tank, the second anti-freezing sensor is installed on the pipeline between the solar out-water interface and the outlet of the solar heat collecting water tank, and the first anti-freezing sensor and the second anti-freezing sensor are electrically connected with the intelligent control host respectively.

[0017] Further, the outdoor temperature sensor is arranged outside the solar heat collecting water tank, and the outdoor temperature sensor is electrically connected with the intelligent control host.

[0018] Further, the water level sensor is arranged in the solar heat collecting water tank, and the water level sensor is electrically connected with the intelligent control host.

[0019] Further, the electric heating pipe is electrically connected with the intelligent control host through the temperature limiting protection switch.

[0020] Further, a first water flow sensor is installed on the hot water section, a second water flow sensor is installed before the water inlet valve of the main water inlet section, and the first water flow sensor and the second water flow sensor are electrically connected with the intelligent control host.

[0021] Further, a one-way pressure relief valve is installed after the booster circulating pump on the communication section.

[0022] Further, the intelligent control host is in communication connection with the smart phone through wireless signals.

[0023] After the design is adopted, the utility model has at least the following advantages:

[0024] 1. When the sunlight is sufficient, the intelligent control host executes the "energy-saving mode", that is, when the temperature of the solar heat collecting water tank monitored by the intelligent control host is greater than a specified value, the booster circulating pump and the forward valve are started, the hot water in the solar heat collecting water tank flows through the communication section, the heat storage water tank and the forward valve and then returns to the solar heat collecting water tank, the heat storage water tank is heated in the circulating flow, the effect of instant heating is achieved, and the user can use the hot water immediately after opening the faucet.

[0025] 2. When the sunlight is insufficient, the intelligent control host executes the "intelligent mode", that is, when the temperature of the solar heat collecting water tank monitored by the intelligent control host is less than a specified value, the electric heating pipe is started to heat the water in the heat storage water tank for the user to use at any time.

[0026] 3. When the sunlight is insufficient and the user needs to use water in a large flow, the "bathing mode" can be started in advance, the intelligent control host starts the electric heating pipe, the booster pump and the reverse valve, the water in the heat storage water tank is heated, and the heated water is circulated to the solar heat collecting water tank through the pipeline, so that the user can use water in a large flow.

[0027] 4. When the intelligent control host determines that the solar water heater or the pipeline has a fault through the parameters of the water level sensor and the second water flow sensor or the user observes that the solar water heater leaks, the "water heater mode" can be automatically or manually switched, the water inlet valve is closed, the water supply valve is opened to independently supply water to the heat storage water tank, and the electric heating pipe is started, so that the heat storage water tank is used as a water heater.

[0028] 5. The intelligent control host determines whether there is a pipe freezing risk through the first anti-freezing sensor and the second anti-freezing sensor, when the temperature of the first anti-freezing sensor and the second anti-freezing sensor is less than a specified value, the electric heating pipe, the booster circulating pump and the backwater valve are started to heat the water in the heat storage water tank and avoid the pipe freezing phenomenon through the circulating flow.

[0029] 6. The intelligent control host can automatically switch modes according to the monitored parameters, the user can locally operate or remotely operate and view parameters through the smart phone and the application program, and the intelligent degree is high.

[0030] 7、structure compact, high integration, heat storage water tank and all valves, pipeline are integrated installation in the shell, the shell outside reserves five interfaces, when installing only need to connect the corresponding external pipeline, whether it is first installation or to the user has solar water heater to carry out upgrade is convenient and flexible. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above is only a summary of the technical scheme of the utility model, in order to be more clearly understood the technical means of the utility model, the utility model is further explained in detail below with the specific embodiments and the accompanying drawings.

[0032] Figure 1 It is a kind of structure composition block diagram of outdoor intelligent photoelectric water heater provided by the utility model.

[0033] Mark explanation: 1, display;2, intelligent control host computer;3, water level sensor;4, outdoor temperature sensor;5, second freeze-proof sensor;6, heat storage temperature sensor; temperature limiting protection switch;8, forward valve;9, backwater valve;10, booster circulating pump;11, water valve;12, second water flow sensor;13, water supply valve;14, reverse valve;15, first water flow sensor;16, first freeze-proof sensor;17, heat collection temperature sensor;18, heat storage water tank;19, solar heat collection water tank;20, water pipe;21, smart phone;22, power supply;23, one-way pressure relief valve;24, electric heating pipe;25, faucet;26, shell;27, hot water interface;28, backwater interface;29, water interface;30, solar water outlet interface;31, solar water interface;32, heat storage water tank outlet;33, reverse circulation port;34, positive circulation port;35, heat storage water tank inlet;36, main water section;37, communication section;38, hot water section;39, water supply section. DETAILED DESCRIPTION

[0034] Please refer to Figure 1 The utility model provides a kind of outdoor intelligent photoelectric water heater, including shell 26, intelligent control host computer 2, display 1 and heat storage water tank 18.

[0035] The shell 26 is equipped with five external interfaces respectively as hot water interface 27, backwater interface 28, water interface 29, solar water outlet interface 30 and solar water interface 31, and the shell 26 is internally installed with heat storage water tank 18 and corresponding multiple connection pipelines and electromagnetic valve.

[0036] The heat storage water tank 18 is equipped with heat storage water tank inlet 35, heat storage water tank outlet 32, positive circulation port 34 and reverse circulation port 33, and electric heating pipe 24, temperature limiting protection switch 7 and heat storage temperature sensor 6 are installed inside heat storage water tank 18.

[0037] The internal connecting pipeline of the shell 26 comprises a main water inlet section 36, a connecting section 37 and a hot water section 38.

[0038] The main water inlet section 36 is connected between the water inlet interface 29 and the solar water inlet interface 31, and the water inlet valve 11 is installed on the main water inlet section 36. The water inlet interface 29 is connected with the water pipe 20, and the solar water inlet interface 31 is connected with the inlet of the solar heat collecting water tank 19 through an external pipeline. The external pipeline in this part is the water inlet pipe of the conventional solar water heater, which is usually long and located outdoors. In order to prevent the pipeline from freezing, a first anti-freezing sensor 16 is installed on the pipeline. The main water inlet section 36 is equivalent to being connected between the water pipe 20 and the water inlet pipe of the conventional solar water heater. The second water flow sensor 12 is installed before the water inlet valve 11 of the main water inlet section 36.

[0039] The connecting section 37 is connected between the solar water outlet interface 30 and the inlet of the heat storage water tank 35, and the booster circulating pump 10 is installed on the connecting section 37. The one-way pressure relief valve 23 is arranged after the booster pump 10, and in this embodiment, the one-way pressure relief valve 23 is located at the inlet of the heat storage water tank 35, which plays a safety overflow role. The solar water outlet interface 30 is connected with the outlet of the solar heat collecting water tank 19 through an external pipeline. The external pipeline in this part is the water outlet pipe of the conventional solar water heater, which is also long and located outdoors, and a second anti-freezing sensor 5 is installed on the pipeline. The connecting section 37 is equivalent to being connected between the water outlet pipe of the conventional solar water heater and the heat storage water tank 18, and the booster circulating pump 10 is used to drive water flow to perform forward temperature difference circulation and reverse temperature difference circulation (hereinafter referred to as forward circulation and reverse circulation).

[0040] The hot water section 38 is connected between the outlet of the heat storage water tank 32 and the hot water interface 27, and the hot water interface 27 is connected to the water return interface 28 through an external ring line. The water return interface 28 is connected to the water inlet valve 11 of the main water inlet section 36 through the water return valve 9. The external ring line in this part passes through all water use points in the kitchen and bathroom, and each water use point has a faucet 25. In this embodiment, only one faucet 25 is shown. The first water flow sensor 15 is installed on the hot water section 38 close to the outlet of the heat storage water tank 32.

[0041] In addition to the main water inlet section 36, the connecting section 37 and the hot water section 38, three branch pipeline sections are also arranged in the shell 26.

[0042] The first branch pipeline section is connected from the forward circulation port of the heat storage water tank 18 through the forward valve 8 to the water inlet valve 11 of the main water inlet section 36. In this embodiment, in order to save the occupied space of the pipeline, the forward valve 8 is connected after the water return valve 9, but it is essentially connected to the main water inlet section 36. The branch pipeline is used for forward circulation.

[0043] The second branch is connected from the reverse circulation port 33 of the heat storage water tank 18 to the front of the upper water valve 11 through the reverse valve 14, and is used for reverse circulation.

[0044] The third branch is the water supply section 39, which is connected between the front of the upper water valve 11 and the forward circulation port 34 of the heat storage water tank 18, and the water supply valve 13 is installed on the water supply section 39. The water supply section 39 is used to supply water to the heat storage water tank 18 independently when the solar water heater fails.

[0045] The heat collection temperature sensor 17 and the water level sensor 3 are arranged in the solar heat collection water tank 19, and are used to monitor the temperature and water level in the solar heat collection water tank 19, respectively. The water level sensor 3 has five levels, which are 0%, 20%, 50%, 80% and 100%. The outdoor temperature sensor 4 is arranged near the outside of the solar heat collection water tank 19, and is used to monitor the outdoor temperature.

[0046] The upper water valve 11, the backwater valve 9, the forward valve 8, the reverse valve 14, the water supply valve 13, the booster circulation pump 10 and the intelligent control host 2 are electrically connected, and the electric heating pipe 24 is electrically connected with the intelligent control host 2 through the temperature limiting protection switch 7, so as to realize the on-off control of the above components.

[0047] The heat storage temperature sensor 6, the heat collection temperature sensor 17, the first anti-freezing sensor 16, the second anti-freezing sensor 5, the outdoor temperature sensor 4, the first water flow sensor 15, the second water flow sensor 12 and the water level sensor 3 are electrically connected with the intelligent control host 2, so as to realize the monitoring of corresponding parameters.

[0048] The display 1 is electrically connected with the intelligent control host 2, and is used to display the control interface and parameters.

[0049] The intelligent control host 2 is connected with the smart phone 21 through wireless signals, so as to realize remote operation and viewing of operation parameters.

[0050] The utility model connects the power supply 22 after completing all external pipeline installation, and the intelligent control host 2 first carries out power-on self-checking and detects all components. If there is a fault, the display 1 displays the corresponding fault code. After completing the power-on self-checking, the display 1 displays: Beijing time, temperature parameters at each temperature sensor, water level sensor 3 parameters, and alarm dynamic / operation mode / booster pump dynamic / heating / electromagnetic valve / water flow sensor working state.

[0051] When first put into use, the solar heat collection tank 19 and the heat storage tank 18 are empty, and the intelligent control host monitors that the solar heat collection tank 19 is short of water, and immediately opens the water valve 11 to supplement water to the solar heat collection tank 19 to 50% water level and then stops. First put into use also needs to carry out pipeline emptying, and when emptying, the faucet 25 is opened until water flows out and then closed, the water in the solar heat collection tank 19 enters the heat storage tank 18 through an external pipeline (a drain pipe), the second anti-freezing sensor 5, the solar water outlet 30, the booster circulating pump 10, the one-way pressure relief valve 23, the heat storage tank inlet 35, and then flows out through the heat storage tank outlet 32, the first water flow sensor 15, the hot water interface 27 and the faucet 25.

[0052] The working state of the utility model when the user uses hot water is as follows:

[0053] When the faucet 25 is close to the installation position of the utility model, after the user opens the faucet 25, the first water flow sensor 15 monitors the water flow signal, the intelligent control host 2 controls the booster circulating pump 10 to start, and after the user closes the faucet 25, the intelligent control host 2 automatically closes the booster circulating pump 10. When the user opens the faucet 25, the intelligent control host 2 will immediately disconnect the power supply of the electric heating pipe 24, isolate the zero line and the live line to prevent accidental electric shock when using water, and after the user closes the faucet 25, the electric heating pipe 24 restores power supply after 8 seconds of delay.

[0054] When the faucet 25 is far away from the installation position of the utility model (more than 10 meters), the user opens the faucet 25 and immediately closes it, waits for 10-60 seconds (depending on the length of the external ring line) and then opens it again to use hot water. After the user first opens the faucet 25, the first water flow sensor 15 monitors the water flow signal, and the intelligent control host 2 controls the water return valve 9 to open for 10-60 seconds, at this time the faucet 25 is in a closed state, the hot water in the heat storage tank 18 replaces the cold water in the external ring line, and after 10-60 seconds, the water return valve 9 is closed, and the user opens the faucet 25 to flow out hot water. It should be noted that the water return valve (9) is opened for 10-60 seconds each time, and the interval between two openings is 20 minutes (because there will be no cold water in the pipeline within 20 minutes). The faucet 25 is repeatedly opened within 20 minutes, the intelligent control host 2 will not open the water return valve 9, but will restart the 20-minute timing (from the last time the faucet 25 is closed).

[0055] The utility model has four working modes under normal use, which are energy-saving mode, intelligent mode, bathing mode and water heater mode.

[0056] Energy saving mode: the default mode when starting up, used to heat water by solar energy when sunlight is sufficient. When the temperature of the heat collection temperature sensor 17 in the solar water heating tank 19 is greater than the specified temperature (in this embodiment, the specified temperature is 42°C, and the user sets the range to be 40°C-45°C), the energy saving mode is run. In the energy saving mode, if the water level in the solar water heating tank 19 is less than 50%, the water inlet valve 11 is opened to supplement water, and when the water level reaches 50%, the water inlet valve 11 is closed after a delay of 10 seconds. During the automatic water supplement process, if the intelligent control host 2 detects that the water inlet valve 11 is in the open state, but the second water flow sensor 12 has no pulse signal, the system determines that there is a water stop or a pipeline fault. The water inlet valve is closed after 2 minutes of no pulse signal of the second water flow sensor 12, and is detected every hour, and if the water supplement process is normally executed, the water level in the solar water heating tank 19 will be maintained above 50%.

[0057] When the water temperature in the solar water heating tank 19 gradually rises under sufficient sunlight, when the temperature difference between the solar water heating tank 19 and the heat storage tank 18 is greater than or equal to 8°C (the user sets the range to be 5°C-10°C), the booster circulating pump 10 and the forward valve 9 are opened, and the system executes the forward circulation. The hot water in the solar water heating tank 19 enters the heat storage tank 18 through the external pipeline (the water outlet pipe), the second freeze-proof sensor 5, the solar water outlet interface 30, the booster circulating pump 10, the one-way pressure relief valve 23, the heat storage tank inlet 35, and then enters the heat storage tank 18 through the forward circulation port 34, the forward valve 8, the solar water inlet interface 31, the external pipeline (the water inlet pipe), the first water flow sensor 15, and returns to the solar water heating tank 19. The function of the forward circulation is to heat the water in the heat storage tank 18. When the temperature difference between the solar water heating tank 19 and the heat storage tank 18 is equal to 3°C (the user sets the range to be 2°C-5°C), the forward circulation is stopped. At the same time, in order to ensure the safety of the user using hot water, when the water temperature in the heat storage tank 18 is 45°C (the user sets the range to be 42°C-48°C), the intelligent control host 2 prohibits the forward circulation.

[0058] Intelligent mode: when the water temperature in the solar water heating tank 19 is less than 40°C, the intelligent mode is run, which is used to assist heating by the electric heating pipe 24 when the sunlight is insufficient. In the intelligent mode, when the water temperature in the heat storage tank 18 is less than 40°C, the intelligent control host 2 opens the electric heating pipe 24 through the temperature limiting protection switch 7 to heat the water in the heat storage tank 18 for the user to use in small flow. When the water temperature in the heat storage tank 18 reaches 45°C, the electric heating pipe 24 stops power supply.

[0059] Bathing Mode: At night or when sunlight is insufficient, users can manually select and run the bathing mode via their smartphone or local device (it needs to be run 1.5 hours in advance, and will return to energy-saving mode after completion) for high-flow hot water use. In bathing mode, the intelligent controller 2 first opens the water inlet valve 11 based on the water level sensor 3 to replenish the hot water tank 19 with 50%, 80%, or 100% water (users can determine the amount of water needed). After a 10-second delay after the selected water level is reached, the electric heating element 24 turns on to heat the hot water storage tank 18. When the temperature difference between the hot water storage tank 18 and the solar water collector tank 19 is greater than or equal to 8℃ (the user-set range is 5℃-10℃), the booster circulation pump 10 and the reverse valve 14 are activated. The hot water in the hot water storage tank 18 enters the solar water collector tank 19 through the reverse circulation port 33, the reverse valve 14, the solar water inlet interface 31, the external pipeline (water inlet pipe), the first antifreeze sensor 16, and then returns to the hot water storage tank 18 through the external pipeline (drain pipe), the second antifreeze sensor 5, the solar water outlet interface 30, the booster circulation pump 10, the one-way pressure relief valve 23, and the hot water storage tank inlet 35. When the temperature difference between the hot water storage tank 18 and the solar water collector tank 19 is equal to 4℃ or the temperature in the solar water collector tank 19 reaches 48℃, the reverse circulation stops and the system returns to energy-saving mode.

[0060] The purpose of reverse circulation is to ensure that all the water in the solar water heater tank 19 is heated. Because the storage tank 18 has a small volume, the hot water in it can only meet the needs of small flow (such as washing hands and face). Running reverse circulation in advance can fill the pipes and the solar water heater tank 19 with hot water, meeting the needs of users for large flow continuous use (such as bathing).

[0061] Water heater mode: In case of leakage in the solar water heater or pipes, water is supplied separately to the hot water storage tank 18, and the hot water storage tank 18 and electric heating element 24 are used as a regular water heater. The water heater mode can be switched automatically by the system or manually by the user.

[0062] Automatic switching: When the second water flow sensor 12 detects a normal pulse signal, but the water level in the solar water heater tank 19 remains unchanged for 15 minutes, the system identifies a leak in the solar water heater or pipes. At this time, the inlet valve 11 is closed, and the supply valve 13 is opened to independently supply water to the storage tank 18. The electric heating element 24 is activated 30 seconds after the supply valve 13 is opened, and the display 1 switches to the water heater display mode. When the water temperature in the storage tank 18 reaches 50℃ (user-set temperature 45℃-50℃), the electric heating element 24 is de-energized. The hysteresis value is set to 5℃, meaning that the electric heating element 24 restarts when the temperature in the storage tank 18 drops to 45℃.

[0063] Manual switching: When the user observes a leak in the solar water heater or pipes, they can manually switch to the water heater mode.

[0064] It should be noted that when the monitoring temperature of the winter outdoor temperature sensor 4 is <1℃, the intelligent control host 2 prohibits automatic and manual switching to the water heater mode, so as to avoid that normal water supplement, positive circulation and reverse circulation cannot be executed due to misoperation, and thus the pipe freezing phenomenon occurs. If the pipeline is damaged in winter, it needs to be immediately stopped for maintenance.

[0065] The utility model has water shortage alarm, manual water filling, forced water filling, timing water filling, constant temperature water filling and pipeline anti-freezing functions on the basis of the above four working modes.

[0066] Water shortage alarm: when the water level sensor 3 monitors that the water level is too low, the corresponding parameters on the display 1 flicker and issue a beeping alarm, and the intelligent control host 2 automatically stops water supplement at 50% water level.

[0067] Manual water filling: the user can manually operate the water filling key to supplement water to any specified water level.

[0068] Forced water filling: when the water level sensor 3 fails, the system cannot automatically execute water supplement, and the user can press the water filling key to force water filling, and the forced water filling is automatically turned off after 10 minutes of operation.

[0069] Timing water filling: the user can set three arbitrary time periods for timing water filling every day, and the system automatically starts water filling to the specified water level and stops when the set time is reached.

[0070] Constant temperature water filling: the intelligent control host 2 detects the temperature of the heat collection temperature sensor 17 every 1 hour, and when the monitoring temperature of the heat collection temperature sensor 17 is ≥55℃ and the water level is below 100%, the constant temperature water filling is started. When the monitoring temperature of the heat collection temperature sensor 17 is =50℃ or the water level reaches 100%, the water filling is stopped.

[0071] Pipeline anti-freezing: the first anti-freezing sensor 16 is arranged at a distance of one meter from the water inlet of the solar heat collection water tank, and the second anti-freezing sensor 5 is arranged at a distance of one meter from the solar water outlet interface 30.

[0072] When the first anti-freezing sensor 16 or the second anti-freezing sensor 5 monitors that the pipe temperature is ≤ 3℃, the intelligent control host 2 system judges the temperature of the solar heat collecting water tank 19, that is, the heat collecting temperature sensor 17 temperature.When the heat collecting temperature sensor 17 is ≤ 30℃, then the electric heating pipe 24 is started, and when the heat collecting temperature sensor 17 is > 30℃, the electric heating pipe 24 is not started. At the same time, the intelligent control host 2 starts the booster circulating pump 10 and the backwater valve 9 to make hot water circulate to avoid pipe freezing. The circulating path is as follows: the outlet of the solar heat collecting water tank 19-external pipeline (downcomer pipe), the second anti-freezing sensor 5, the solar water outlet 30, the booster circulating pump 10, the one-way pressure relief valve 23, the heat storage water tank 18, the heat storage water tank outlet 32, the first water flow sensor 15, the hot water interface 27, the faucet 25, the backwater interface 28, the backwater valve 9, the solar water inlet 31, the external pipeline (upcomer pipe), the second anti-freezing sensor 5 and the inlet of the solar heat collecting water tank 19. It should be noted that most of the southern region does not install heating in winter, so it is necessary to include the ring pipeline connected to the indoor water points into the circulating path to avoid pipe freezing in the indoor ring pipeline.

[0073] When the first anti-freezing sensor 16 and the second anti-freezing sensor 5 simultaneously monitor that the pipe temperature is > 10℃, the circulation is stopped.

[0074] On the basis of the above functions, the utility model can also be connected with a smart phone through a wireless signal to carry out online commodity sales

[0075] The manufacturer can establish a network digital information platform and connect to a user smart phone app terminal, thereby attracting users to visit, effectively obtaining traffic and carrying out online commodity sales. The manufacturer large screen can display real-time regional device online position information and contact information, user location weather conditions. At the same time, network remote online device firmware and applet upgrading are realized, and users can also check power statistics and water statistics at any time through the app. Setting data one-key recovery factory setting function, and timely response to user consultation, efficient handling of complaint problems, help to stand out in fierce market competition, establish good enterprise brand image, promote enterprise product online sales business rapid development.

[0076] The utility model can effectively solve the problems of insufficient hot water supply of traditional solar water heater on cloudy days, the problem of having to discharge a period of cold water after opening the faucet, unstable water pressure, hot and cold water, and pipe freezing in winter, and has the advantages of compact structure, high integration, easy installation, high intelligence and convenient use.

[0077] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Those skilled in the art can make some simple modifications, equivalent changes or modifications to the disclosed technical contents, and all fall within the protection scope of the present application.

Claims

1. An outdoor intelligent photovoltaic water heater, characterized in that, It includes a housing (26), an intelligent control host (2), a display (1), and a hot water storage tank (18). The outer casing (26) is provided with five external interfaces, namely hot water interface (27), return water interface (28), water inlet interface (29), solar water outlet interface (30) and solar water inlet interface (31). The hot water storage tank (18) is located inside the outer shell (26). An electric heating tube (24) is installed inside the hot water storage tank (18). The hot water storage tank (18) is provided with a hot water storage tank inlet (35), a hot water storage tank outlet (32), a positive circulation port (34), and a reverse circulation port (33). The outer casing (26) is equipped with multiple pipelines, including a main water supply section (36), a connecting section (37), and a hot water section (38). The main water supply section is connected between the water supply interface (29) and the solar water supply interface (31). The main water supply section (36) is equipped with a water supply valve (11). The water supply interface (29) is connected to the tap water pipe (20). The solar water supply interface (31) is connected to the inlet of the solar water collection tank (19). The connecting section (37) is connected between the solar water outlet (30) and the inlet (35) of the hot water storage tank. The connecting section (37) is equipped with a booster circulation pump (10). The solar water outlet (30) is connected to the outlet of the solar hot water collection tank (19). The hot water section (38) is connected between the hot water storage tank outlet (32) and the hot water interface (27). The hot water interface (27) is connected to the return water interface (28) through the external loop. The return water interface (28) is then connected to the water supply valve (11) of the main water supply section (36) through the return water valve (9). The faucet (25) is set on the external loop. The positive circulation port (34) is connected to the water supply valve (11) of the main water supply section (36) via the positive valve (8), and the reverse circulation port (33) is connected to the water supply valve (11) of the main water supply section (36) via the reverse valve (14). The intelligent control host is electrically connected to the water inlet valve (11), water return valve (9), forward valve (8), reverse valve (14), booster circulation pump (10), and electric heating tube (24) to realize switch control. The display is electrically connected to the intelligent control host to display the control interface and parameters.

2. The outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, The housing (26) is also provided with a water supply section (39), which is connected between the front of the water supply valve (11) and the positive circulation port (34). A water supply valve (13) is installed on the water supply section (39), and the water supply valve (13) is electrically connected to the intelligent control host.

3. The outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, The hot water storage tank (18) is equipped with a heat storage temperature sensor (6), and the solar water collection tank (19) is equipped with a heat collection temperature sensor (17). The heat storage temperature sensor (6) and the heat collection temperature sensor (17) are electrically connected to the intelligent control host (2).

4. An outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, A first antifreeze sensor (16) is installed on the pipeline between the solar water inlet (31) and the inlet of the solar water heater (19), and a second antifreeze sensor (5) is installed on the pipeline between the solar water outlet (30) and the outlet of the solar water heater (19). The first antifreeze sensor (16) and the second antifreeze sensor (5) are electrically connected to the intelligent control host (2).

5. An outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, An outdoor temperature sensor (4) is installed on the outside of the solar water heater (19), and the outdoor temperature sensor (4) is electrically connected to the intelligent control host (2).

6. An outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, The solar water heater (19) is equipped with a water level sensor (3), which is electrically connected to the intelligent control host (2).

7. An outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, The electric heating tube (24) is electrically connected to the intelligent control host (2) via the temperature limiting protection switch (7).

8. An outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, A first water flow sensor (15) is installed on the hot water section (38), and a second water flow sensor (12) is installed in front of the water inlet valve (11) of the main water inlet section (36). The first water flow sensor (15) and the second water flow sensor (12) are electrically connected to the intelligent control host (2).

9. An outdoor intelligent photovoltaic water heater according to claim 1, characterized in that, The booster circulation pump (10) on the connecting section (37) is equipped with a one-way pressure relief valve (23) after the pump.

10. An outdoor intelligent photovoltaic water heater according to any one of claims 1-9, characterized in that, The intelligent control host (2) communicates with the smartphone (21) via wireless signal.

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