1464 results about "Water heating" patented technology

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The invention discloses a low-vacuum circulating water heating dynamic load matching method based on AI regulation and control, and the method comprises the following steps: step S100, multi-source data real-time collection: building thermal environment parameters are synchronously collected through a temperature sensor array, a vacuum pressure transmitter, a flowmeter and an environment monitoring unit which are deployed in a distributed manner; according to the method, the control period is compressed to the minute level, compared with traditional PID control, the response speed is increased by several times, the indoor temperature can be controlled more accurately, and meanwhile the failure rate of equipment is reduced. According to the sudden weather coping mechanism, heat supply strengthening can be started 30 minutes ahead of time under extreme weather such as snowstorm weather, and the stability of the system is ensured. The method is characterized in that the prediction advantage of deep learning and the optimization capability of model prediction control are deeply combined, and the control problem of multivariable strong coupling of the low vacuum system is solved through a verification system of multi-source data fusion and virtual-real combination.

The invention relates to the technical field of peak regulation of power generation systems, in particular to a multi-mode power generation system for a new energy large base and an operation method of the multi-mode power generation system. The multi-mode power generation system comprises a thermal power station and a fused salt energy storage power station. The thermal power station comprises a boiler, a first turbine, a first water return unit and a first generator; the fused salt energy storage power station comprises a high-temperature fused salt tank, a low-temperature fused salt tank, a fused salt heating unit, a steam-water heating unit, a second water return unit, a second steam turbine and a second generator; an air inlet of the fused salt heating unit is configured to obtain steam flowing out of the boiler, and a second discharging opening of the fused salt heating unit is connected with the first water return unit; an air outlet of the steam-water heating unit is connected with the first steam turbine and the second steam turbine. The first water return unit and the second water return unit are connected with a second feeding port of the steam-water heating unit. The multi-mode power generation system can set different operation modes according to different requirements, so that the new energy large base can meet higher requirements.

The invention provides a water heating pipeline pressure self-adaptive regulation and control method and system based on the Internet of Things, and belongs to the technical field of intelligent control of pipelines of the Internet of Things. According to the technical scheme, the method comprises the steps of building a pipeline acoustic sensing network, collecting pipeline external voiceprint signals to generate lightweight feature data, building a voiceprint-pressure mapping model based on the feature data, outputting a real-time pressure value, generating a pipe network state diagram based on the real-time pressure value, generating a pressure regulation and control instruction based on the pipe network state diagram, and achieving pressure self-adaptive regulation. Feedback data is collected according to the regulation and control result, and mapping model parameters are updated. The method has the advantages that the pipeline acoustic sensing network is constructed, edge calculation, depth feature extraction and the parallel neural network are combined, the pressure self-adaptive regulation and control capacity which does not need invasive sensing arrangement and has timeliness and robustness is achieved, meanwhile, a feedback closed loop is formed through a voiceprint-pressure mapping model, and the method is suitable for large-scale popularization and application. And the processing capacity of the system on complex dynamic working conditions is improved.

The invention relates to the technical field of water heating pipeline welding, and discloses a pipe orifice laser welding tool for butt joint of anti-leakage water heating pipelines, which comprises a laser welding table, two side plates are symmetrically distributed at the top of the laser welding table, placing cylinders are arranged on the two side plates, and pipeline bodies are arranged in the two placing cylinders; an L-shaped plate is further arranged at the top of the laser welding table, a first electric push rod is arranged at the top of the L-shaped plate, and a laser welding head is arranged at the output end of the first electric push rod. According to the pipe orifice laser welding tool for butt joint of the leakproof water heating pipelines, the problem of traditional welding position deviation is effectively solved through the calibration component. Under the action of the pushing assembly and the limiting assembly, the position of the pipeline is accurately adjusted through movement of the inner rod and compression and release of the calibration spring, and it is ensured that a connector and a laser welding head are accurately aligned. The process effectively avoids insufficient welding and welding skips, forms uniform and compact welding seams, reduces the leakage risk during operation of the water heating system, prolongs the service life of the pipeline, and reduces the later maintenance cost.

The invention discloses a control method for steam condensate waste heat recovery and waste water heating, a control device for steam condensate waste heat recovery and waste water heating, control equipment and a computer readable storage medium. The thermal load and the logarithmic average temperature difference are calculated based on the energy conservation principle, and the needed heat exchange area is calculated through a logarithmic average temperature difference method. A flow combination scheme of the plate heat exchanger is determined according to the heat exchange area and the flow parameters, a steam condensate side adopts a single flow, and a waste water side adopts asymmetric configuration of double flows or multiple flows so as to adapt to the flow difference of the two sides. In addition, a real-time monitoring mechanism is further established, when the total heat transfer coefficient is decreased by more than 10%, a cleaning program is automatically triggered, continuous and stable operation of the system is guaranteed, and efficient utilization of waste heat resources is achieved.

The utility model provides an air conditioner and hot water all-in-one machine with temperature control and dehumidification functions, which comprises a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a refrigerant-water heat exchanger and a liquid storage device, and the exhaust end of the compressor is communicated to one end of the outdoor heat exchanger, one end of the first indoor heat exchanger or one end of the refrigerant-water heat exchanger. One end of the second indoor heat exchanger communicates with the exhaust end or the air suction end of the compressor, the other end of the second indoor heat exchanger communicates with the liquid storage device, and the other end of the outdoor heat exchanger, the other end of the first indoor heat exchanger or the other end of the refrigerant-water heat exchanger communicates with the interior of the liquid storage device. The suction end of the compressor communicates with one end of the outdoor heat exchanger or one end of the first indoor heat exchanger. According to the utility model, the modes of refrigeration and water heating, heating and water heating and dehumidification and water heating can be realized at the same time, the system can also adapt to the refrigerant circulation amount in different modes, the problem of high power consumption is solved, the problem that the requirement of comfort cannot be met is solved, and the system runs efficiently.

The utility model discloses fuel gas water heating equipment, which relates to the technical field of water heating equipment, and comprises a main machine body, a fuel gas water heater and a water heater, the fan and water pump assembly is installed on the main machine body and comprises a driving device, a fan assembly and a water pump assembly, the fan assembly and the water pump assembly are in driving connection with the driving device, the fan assembly is communicated with the air path system, and the water pump assembly is communicated with the water path system. The driving device is used for controlling the fan assembly and the water pump assembly to operate, so that the fan assembly drives airflow to flow along the air path system, and the water pump assembly drives water flow to flow along the water path system. According to the technical scheme, the cost of the gas water heating equipment can be reduced, the size of the whole machine is reduced, and meanwhile the assembling efficiency of the whole machine can be improved.

The utility model belongs to the technical field of tea bar machines, and particularly relates to a multifunctional tea bar machine. Comprising a tea bar machine body, and a heating kettle and a heat preservation kettle are arranged on a water heating platform and a water heat preservation platform; the two transparent sleeves are fixedly installed on the left side and the right side of the top of the tea bar machine body respectively. The heating kettle and the heat preservation kettle are located in the two transparent sleeves respectively. The back plate is fixedly mounted on the rear side of the top of the tea bar machine body; a water outlet block is fixedly installed on the front side of the circular block, and a water outlet hole is formed in the front portion of the lower side of the water outlet block; the novel electric kettle is simple in structure and reasonable in design, the water outlet hole can be sealed when the novel electric kettle is used, the water outlet hole is prevented from being polluted when the novel electric kettle is not used, the heating kettle and the heat preservation kettle are wrapped and protected through the two transparent sleeves, and the novel electric kettle is convenient to use. And the tea bar machine is prevented from falling off from the tea bar machine body due to collision.

The invention discloses an efficient circulating water heating system based on a heat pump and a control method thereof.The system comprises a multi-stage heat pump system, a circulating water heating loop and an intelligent control unit, and the multi-stage heat pump system is used for increasing heat energy of a low-temperature heat source stage by stage to heat circulating water; the intelligent control unit is integrated with a data acquisition module, a load prediction module, a system modeling module, a parameter optimization module, an instruction issuing module and a performance evaluation module, and can realize thermal load dynamic prediction and thermal performance modeling and optimization control of the heat pump system. The control method is based on deep learning and model prediction control, combines real-time data and an external scheduling instruction, calculates an optimal operation parameter to improve the system energy efficiency ratio or reduce the operation cost, and continuously optimizes prediction and modeling precision through an adaptive learning mechanism. The system has the capacity of intelligent prediction, accurate control, efficient heat transfer and self-optimization, is suitable for occasions such as industries and buildings with high requirements for hot water supply energy efficiency, and remarkably improves the operation efficiency and stability of the system.

A water heating system includes a first heating chamber arranged in parallel with a second heating chamber; a first temperature sensor positioned to sense a first temperature in the first heating chamber; a second temperature sensor positioned to sense a second temperature in the second heating chamber; and a controller configured to: determine a first temperature value based on a first sensor signal from the first temperature sensor, determine a second temperature value based on a second sensor signal from the second temperature sensor, compute a differential between the first temperature value and the second temperature value, determine that scale buildup is indicated in response to the differential exceeding a first threshold, and initiate a corrective action in response to determining that scale buildup is indicated.

The invention discloses a water heating equipment energy-saving method and device and a computer readable storage medium, and relates to the technical field of electric appliances, the water heating equipment energy-saving method comprises the following steps: obtaining historical water use data of water heating equipment, and determining an idle time period and a water use time period of the water heating equipment according to the historical water use data; in the idle time period, the water heating equipment is controlled to operate based on the first preset temperature; and in the water using time period, the water heating equipment is controlled to operate based on a second preset temperature, and the second preset temperature is higher than the first preset temperature. The technical problem that the water use experience of a user is poor due to an existing water dispenser energy-saving scheme is solved.

The invention discloses a control method of a gas water heating device, the gas water heating device comprises a combustion device, a first heat exchanger and a second heat exchanger which are arranged in sequence, flue gas generated by the combustion device flows through the first heat exchanger and the second heat exchanger in sequence, and at least part of water flow entering the gas water heating device flows through the second heat exchanger and the first heat exchanger in sequence; the gas water heating device further comprises an atomization cavity and an atomization generator, the atomization cavity communicates with the heat exchange cavity of the second heat exchanger so that condensate water generated in the second heat exchanger can flow into the atomization cavity, and the atomization generator is used for atomizing the condensate water flowing into the atomization cavity so that the condensate water can form water mist. The control method comprises the steps that the heat load needed by the gas water heating device for heating water entering the gas water heating device to the preset temperature is obtained; and controlling the working power of the atomization generator based on the thermal load. The problem that water mist formed by the condensate water atomization device is prone to secondary condensation at the position of the smoke exhaust pipe, and consequently water drips from the smoke exhaust pipe can be solved.

The invention provides a verification method and system for a water outlet temperature sensor of a water heating electric heater and a new energy automobile. The method comprises the steps that the water outlet temperature T1 of the water heating electric heater is estimated based on the current water inlet temperature, the environment temperature, the heating power degree and the cooling liquid flow; and the water outlet temperature T2 detected by a temperature sensor at the water outlet of the water heating electric heater is read, the difference value T between the water outlet temperature T1 and the water outlet temperature T2 is calculated, and if the absolute value of the deviation corresponding to the difference value T is larger than a set deviation threshold value, it is determined that temperature sensing at the water outlet is invalid. A temperature sensor does not need to be additionally arranged at a water outlet of the water heating electric heater for effective detection of the outlet water temperature, and the outlet water temperature is predicted by means of the environment temperature, the cooling liquid flow, the inlet water temperature and the heating power of the heater. Effective detection is carried out on the outlet water temperature detected by the temperature sensor at the outlet based on the predicted outlet water temperature, the detection method is simple and easy to operate, and the production cost is reduced.

Systems and methods for establishing a warmed potable water flow from an aircraft potable water supply with an ambient temperature absorbs and scavenges waste heat from an air chiller condenser exhaust of an air chiller circuit at a heat exchanger to pre-warm a potable water flow delivered to an aircraft galley appliance water heater, and to increase appliance water heating efficiency and to conserve electrical power for running aircraft galley appliance water heaters.

The utility model discloses heat pump equipment and a hot water heating system, and belongs to the technical field of household appliances. The heat pump equipment comprises a box body, a heat pump assembly, a fan assembly, a pipeline assembly and an electric control box, the heat pump assembly comprises a compressor, a first heat exchanger, a second heat exchanger and a refrigerant pipeline, an inner cavity of the box body is divided into an air inlet cavity and an air outlet cavity through the first heat exchanger, and the compressor, the second heat exchanger, the pipeline assembly and the electric control box are arranged in the air inlet cavity; the fan is arranged in the air outlet cavity, the refrigerant flow path, the compressor and the first heat exchanger are connected through a refrigerant pipeline to form a refrigerant circulation loop, and the second heat exchanger is connected with the water pump, the water inlet pipe and the water outlet pipe through a water flow pipeline to form a water supply pipeline. In addition, the pipeline assembly is arranged on the front side of the refrigerant pipeline, maintenance is more convenient, and the working efficiency is effectively improved.

A water heating system includes an enclosure having a thermally-insulated top and a plurality of thermally-insulated walls, the enclosure being at least substantially open at a bottom of the enclosure and adapted for mounting above an opening in a roof of a building. The water heating system also includes a water heater mounted within an interior of the enclosure.

The invention discloses an efficient absorption heat pump system with low start-stop frequency during variable load of a gas-fired boiler, and belongs to the technical field of absorption heat pumps. Comprising a multi-module absorption heat pump system, and a gas-fired boiler flue gas total heat recovery system, a heat storage and air regulation system and a flue gas condensate water and heat supply network return water heating system which are respectively connected with the multi-module absorption heat pump system; according to the efficient absorption type heat pump system with the low start-stop frequency during the variable load of the gas-fired boiler, a single generator and a single absorber of a traditional absorption type heat pump are changed into a generator set and an absorber set of three modules, and a heat storage and air regulation system is configured; the problems that COP of the absorption heat pump drops suddenly during load fluctuation, driving force is insufficient and a generator is overheated and shuts down frequently are solved while effective recycling of smoke latent heat is guaranteed, and the operation stability of the gas-fired boiler coupling absorption heat pump system is improved.

The utility model discloses an electric control box, heat pump equipment and a hot water heating system, and belongs to the technical field of household appliances. Wherein the electric control box comprises a box body, an electric control board and a wiring assembly, two opposite sides of the box body are respectively provided with a first accommodating cavity and a second accommodating cavity, and the electric control board and an inner wiring seat are arranged in the first accommodating cavity; the outer wire holder is arranged in the second containing cavity and led out of the electric control box through the second circuit, the second circuit is used for being connected with external equipment, the first wire outlet is formed in the box body, the second circuit penetrates out of the electric control box through the first wire outlet, the inner wire holder and the outer wire holder can be integrated with the electric control box, the structure is more compact, and the electric control box is more convenient to use. The inner wire holder and the outer wire holder do not need to be installed separately, thereby saving installation space; and sealing elements are respectively arranged between the first box cover and the box body, between the second box cover and the box body and at the first wire outlet, so that the whole electric control box has better sealing performance, and the electric control box is suitable for heat pump equipment.

A capsule beverage preparation device is provided that comprises an outer housing and beverage preparation units arranged sequentially inside the outer housing; flow passages for flowing a ready product of beverages produced from capsules of different formats; a cup holder; chambers designed to store a variety of capsules containing different ingredients. Each beverage preparation unit comprises: a subunit designed to spray water into each capsule during the brewing process, that comprises a piercing member for puncturing the capsule and spraying water into it; a water heating element; a water pump, configured to operate in different modes for spraying water into capsules of various formats through pressurization; a subunit; a dispensing valve for dispensing a variety of hot beverages.

The utility model discloses fuel gas water heating equipment, which relates to the technical field of water heating equipment, and comprises a main machine body, a gas path system, a water path system, a gas path system and a water path system, the fan and water pump assembly is installed on the main machine body and comprises a driving device, a fan assembly and a water pump assembly, the fan assembly and the water pump assembly are in driving connection with the driving device, an air inlet of the fan assembly communicates with the air path system, and the water pump assembly communicates with the water path system; the driving device is used for controlling the fan assembly to operate so that the fan assembly can drive airflow to flow into the fan assembly along the air path system and be exhausted from an air outlet of the fan assembly, and the driving device is further used for controlling the water pump assembly to operate so that the water pump assembly can drive water flow to flow along the water path system. According to the technical scheme, the cost of the gas water heating equipment can be reduced, the size of the whole machine is reduced, and meanwhile the assembling efficiency of the whole machine can be improved.

The utility model discloses a fan water pump assembly and gas water heating equipment, and relates to the technical field of gas water heating equipment, the fan water pump assembly comprises: a driving device, which is provided with a gas flow channel and a liquid flow channel which are mutually independent, the gas flow channel is provided with an air inlet and an air outlet, and the liquid flow channel is provided with a liquid inlet and a liquid outlet; the first acting element is movably arranged in the gas flow channel and used for driving fluid in the gas flow channel to flow from the air inlet to the air outlet; the second acting element is movably arranged in the liquid flow channel and used for driving fluid in the liquid flow channel to flow from the liquid inlet to the liquid outlet; and the driving device is provided with a first output end in driving fit with the first acting element and a second output end in driving fit with the second acting element, and is used for respectively driving the first acting element and the second acting element to move. According to the technical scheme provided by the utility model, the functions of the fan and the water pump can be integrated, the cost is reduced, the structural compactness is improved, the size is reduced, and the mounting space is saved.

The invention relates to the technical field of waste water heat recovery. The invention discloses a waste water heat recycling device, method and system for a public kitchen dish washing machine. Comprising a data collection module used for reading, collecting and storing related data of waste water waste heat recovery of a public kitchen dish-washing machine and operation of a water heating system; the control module is used for controlling the water tank to supplement water and controlling the indirect sewage source heat pump unit to start and stop; and the waste heat recycling and water heating module is used for recycling waste heat and storing and preparing hot water. Heat of waste water discharged from the dish-washing machine to the oil separation tank is extracted through heat exchange, tap water is heated through the indirect sewage source heat pump unit and supplied to the dish-washing machine, and electric energy consumed by heating the tap water when the dish-washing machine works is reduced. Through the combination of the data collection module and the control module, the system can recycle heat in wastewater in the oil separation tank as much as possible on the premise of ensuring that the water temperature in the oil separation tank is not too low and ensuring the drainage safety.

The invention relates to the technical field of air conditioners, and provides a heat pump unit, a control method and electronic equipment, the unit comprises a heating system, a hot water tank and a heat pump system, the heat pump system comprises a plurality of heat pump main machines, each heat pump main machine is connected to the heating system and the hot water tank through a control valve, and the control valve is provided with a first working position and a second working position. The heat pump main machine is connected to the heating system and the hot water tank through the control valve, when the control valve is located at the first working position, the heat pump main machine communicates with the heating system through the control valve, and the heating function is achieved; when the control valve is located at the second working position, the heat pump main machine communicates with the hot water tank through the control valve, the water heating function is achieved, and therefore the heating function and the water heating function can be switched between the first working position and the second working position through switching of the control valve. And the heating function and the water heating function can be achieved at the same time through the multiple heat pump main machines, then the requirements of multiple working modes are met, and the energy utilization efficiency and the user experience are improved.

The invention relates to the technical field of fresh air equipment, and discloses a heat recovery reheating coil of a fresh air ventilator, which comprises a reheating mechanism, and a heat recovery mechanism is arranged on the right side of the reheating mechanism. When the heat recovery reheating coil pipe of the fresh air machine is used, the characteristics of efficient heat recovery and flexible air control are shown, fresh air enters a heat exchange core body of a second shell through a first impeller driven by a second motor, heat exchange is conducted between the fresh air and old air, primary heating is achieved, and then the fresh air enters a first shell through a fresh air conveying pipe; in summer, outdoor hot air encounters cold water, water drops can be condensed in the heating pipe, a first motor drives a lead screw to drive a sliding block and a water scraping block to scrape water stains, the heating pipe is prevented from rusting, in addition, an inflating pump inflates an air bag through an inflating pipe, the flow of a fresh air conveying pipe and the flow of an old air conveying pipe can be flexibly controlled, and therefore the fresh air conveying pipe and the old air conveying pipe can be controlled. Different requirements of users are met, dynamic adjustment of the fresh air flow and the exhaust air flow is achieved, and the energy efficiency of the system and the user experience are improved.

The utility model discloses a fan water pump assembly and gas-fired water heating equipment, and relates to the technical field of gas-fired water heating equipment, the fan water pump assembly comprises a driving device, the driving device is provided with a first output end and a second output end which are used for outputting torque, the first output end is in driving connection with a wind wheel, and the second output end is in driving connection with a pump wheel; the volute is connected with the driving device, the volute and the driving device jointly define a fan cavity used for containing the wind wheel, the fan cavity is provided with an air inlet and an air outlet, and the wind wheel rotates to drive gas-phase fluid in the fan cavity to flow from the air inlet to the air outlet; the pump shell is connected with the driving device, the pump shell and the driving device jointly define a pump cavity used for containing the pump wheel, the pump cavity is provided with a liquid inlet and a liquid outlet, and the pump wheel rotates to drive liquid-phase fluid in the pump cavity to flow from the liquid inlet to the liquid outlet. According to the technical scheme provided by the utility model, the functions of the fan and the water pump can be integrated, the cost is reduced, the structural compactness is improved, the size is reduced, and the mounting space is saved.

The invention belongs to the technical field of heat supply, and particularly relates to a photovoltaic power generation, solar energy, gas-fired boiler and heat pump unit multi-element collaborative complementary heat supply system, which comprises a water heating system, a heat supply system, a heat supply system, a heat supply system, a heat supply system and a control system, the water storage tank is used for storing water and is connected with the water heating system; the photovoltaic heat supply module converts solar energy into electric energy through a photovoltaic panel, and then the electric energy is used for driving a heat pump or an electric boiler or a resistance wire to heat water in a water storage tank. The solar heat supply module directly utilizes the heat effect of solar energy, sunlight is absorbed through a heat collector to heat a heat transfer medium, and then heat is transferred to a water storage tank or a heating system through a heat exchanger. According to the gas-fired boiler heat supply module, fuel burns to release heat energy, and heat is transferred to the water storage tank or the heating system through heat exchange.

The utility model relates to a water heating control device for a poultry breeding house, which is characterized in that a group of water heating radiators and a fan heater matched with the water heating radiators are connected between a drain pipe (3) and a water return pipe (4), a water tank water temperature detection probe is arranged at a water outlet of a water tank, and an inlet water temperature detection probe and an outlet water temperature detection probe are arranged at a water inlet and a water outlet of each radiator. A group of air temperature detection probes corresponding to the heat supply areas of the radiators are arranged in the poultry breeding house; a controller MCU is arranged, all the temperature probes are connected with the controller MCU through an RS485 bus, the collected measured values of all the temperature probes are transmitted to the controller MCU, the controller MCU operates a control program to send out an instruction, and corresponding switching devices are driven through connected driving circuits to control the warm air blower and the circulating pump to be started or stopped. The utility model has the advantages and effects that the warm air blower is ensured not to blow cold air to chicken bodies, the phenomenon of alternate blowing of cold air and warm air can be effectively prevented, and chicken flocks are prevented from getting ill due to cold air blowing.

The environment-friendly intelligent tea making machine comprises a base and a machine shell fixed to the base, a tea making structure is arranged on the upper portion of the front face of the machine shell, a water outlet is formed in the bottom face of the tea making structure, a water tank is fixed to the base, and the side face of the water tank is attached to the outer surface of the machine shell; a water pump and a control mainboard are fixed in the base, a heating module is fixed in the machine shell, a water outlet pipe of the water pump is connected with the water inlet end of the heating module, and the water outlet end of the heating module is connected to the top of the tea making structure. A liquid crystal display key screen connected with the control mainboard is arranged on the front face of the machine shell. A control valve is arranged between the tea making structure and the water outlet. The tea making device is reasonable in structural arrangement, continuously achieves water heating operation, can achieve continuous tea making operation in cooperation with a tea making structure, facilitates improvement of tea making convenience and effectiveness, facilitates improvement of environmental protection performance, reduces waste, saves tea making time, can achieve automatic cleaning operation and is high in applicability.

A pool system may include a solar heating system for heating water of a swimming pool or spa comprising. The solar heating system includes a collector which may receive water from the swimming pool or spa and heat a flow of water from the swimming pool or spa using solar radiation. The solar heating system includes one or more control devices, which may control a flow rate of water through the solar heating system and / or a pressure of water through the solar heating system.