CN206609166U - A kind of energy-saving and water-saving servicing unit of storage-type electric water heater - Google Patents

Abstract

The utility model relates to an energy-saving and water-saving auxiliary device for a storage-type electric water heater, which is composed of a closed-loop return mechanism and a temperature control module; Switch the valve and lead out a return pipeline. The return pipeline is connected with the pressure micro switch, the return pump, the temperature control module and the two-position three-way solenoid valve in sequence. In the water area, the other channel is connected to the front end of the cold water pipe of the water mixing valve, so that the user can adjust the water temperature without opening the nozzle at the initial stage of hot water use, and can adjust the water temperature only by touching the shell temperature of the three-way switching valve according to experience. During the water test, the hot water can be recovered immediately. The cold water is mixed again; when the user finishes using water, close the water mixing valve, and the hot water in the pipe between the water mixing valve and the nozzle can be pumped back to the water storage tank by shifting the three-way switching valve, so as to keep there is no hot water in the outlet pipe, and also The utility model can reduce the electricity consumption for boiling water next time. The utility model has the advantages of simple structure, convenient operation, strong practicability, and obvious water-saving and energy-saving effects.

Description

Energy-saving and water-saving auxiliary device for water storage electric water heater

technical field

The invention relates to the field of water storage electric water heaters, in particular to a set of energy-saving and water-saving auxiliary devices.

Background technique

In response to the national call for energy conservation and emission reduction, conservation has become a problem that everyone has to seriously face and think about in their daily lives. Nowadays, with the improvement of people's living standards, water heaters have become a necessary household appliance for daily life. There are two main types of water heaters on the market: instant water heaters and storage water heaters, among which instant heat water heaters include gas water heaters and instant electric water heaters. Although the water heater can realize instant hot water, the flow rate is large and the number of people is not limited, but the gas water heater is limited by the layout of the gas pipeline, and the installation requirements are extremely strict; It is not cost-effective for ordinary households. The water storage type water heater generally refers to the water storage type electric water heater. Because of its low price, simple structure, low installation and wiring requirements, slow water heating speed, moderate power consumption, and convenient use, it is suitable for most ordinary families. daily water demand, which makes storage electric water heaters stand out among domestic water heaters and become the first choice of users. However, this kind of water heater is not perfect. On the one hand, before each use, the cold water in the pipeline needs to be released, and then the cold and hot water can flow out of the warm water through the mixing valve. On the other hand, even if the mixed warm water flows out, the temperature is often not necessarily suitable, and it needs to be manually cooled or reheated. This part of the hot water and the electric energy for heating it are actually wasted.

Invention patent CN205536581U discloses a new type of energy-saving and water-saving water heater with a thin-core heat-preserving high-pressure tube as the core device, which is connected to the water outlet pipe and the water tank through a flow micro switch and a booster pump. The system is actually not complicated and has a certain degree of Energy-saving and water-saving effects, but on the one hand, the pipes used need to be specially made, on the other hand, the pipes are not airtight containers, and the insulation effect is difficult to meet the ideal requirements. Among the existing disclosed water heater technologies, patent CN105928189A discloses an energy-saving and water-saving storage water heater. In principle, the water heater pipeline uses the temperature sensor to divert the cold and hot water to the cold water inlet and hot water outlet of the water tank through the two-position three-way solenoid valve, without special devices, and it also has the effect of saving water and electricity during the temperature adjustment period, but On the one hand, the system does not mention the recovery of hot water in the pipe after one use. In addition, if the user does not adjust the water temperature to a suitable temperature for a long time, then there will be more cold water entering the storage tank, which will make the temperature of the hot water in the tank lower. The reduction is faster, and the water temperature adjusted in the early stage is likely to be adjusted during the temperature change during use, which is not convenient for users who are sensitive to temperature. The relatively new half-storage and half-instant water heaters on the market combine the advantages of the two, which alleviates the defects of storage-type water heaters—the limited flow rate, and takes into account the shortcoming of slow hot water output of instant water heaters, but This kind of system is often too complicated, expensive, and troublesome to maintain. The problem of high power of instant electric water heaters has not been fundamentally improved. The installation of gas water heaters still requires a compromise on the layout of gas pipelines.

Contents of the invention

technical problem to be solved

Aiming at the waste of cold water and waste of heat and electricity common in the use of common storage-type electric water heaters, the present invention proposes an energy-saving and water-saving device based on storage-type electric water heaters. The combination of the control switch and the two-position three-way solenoid valve makes no waste of water during the initial temperature adjustment of the water use, and the return pump is used to return the warm water in the pipeline to the water storage tank in time after the water use is over. Theoretically, it has an obvious energy-saving effect. It also reduces the possibility of pipe rust and scaling.

Technical solutions

The solution adopted by the present invention to solve the technical problem is: a set of energy-saving and water-saving auxiliary devices is arranged downstream of the mixing valve of the ordinary household water storage type electric water heater, which consists of two parts: a closed-loop backflow mechanism and a temperature control shunt module; its features are: A three-way switching valve is arranged at the front end of the nozzle of the water storage electric water heater and leads to a return pipe. The return pipe is successively installed with a pressure micro switch, a return pump, a temperature control module and a two-position three-way solenoid valve, of which the two-position three-way The solenoid valve leads to two branches, one of which is connected to the hot water area of the water storage tank, and the other is connected to the front end of the cold water pipe of the mixing valve.

The closed-loop backflow mechanism is composed of an external power supply, a three-way switching valve, a pressure micro switch, a first relay, a small diaphragm pump, and a temperature control shunt module. The three-way switching valve is specifically a "T" ball valve with a handle with one inlet and two outlets. One of the outlet pipes is taken to lead out the return pipe, and a pressure micro switch is installed at the inlet of the return pipe to monitor the three-way. In the state of the reversing valve, the pressure micro switch is connected to the return pump through the first relay, and the outlet of the return pump is connected to the temperature control shunt module. The final pressure should be slightly higher than the pressure of the tap water pipe to ensure that the water retained in the water pipe can enter the water storage tank prior to the front end of the cold water pipe.

The temperature control shunt module is composed of an external power supply, a temperature sensor, a second relay, a two-position three-way solenoid valve and pipelines. Among them, the temperature sensor and the two-position three-way solenoid valve need an external power supply. The temperature sensor is specifically a temperature control switch. Road water temperature and make control actions. When the water temperature in the pipe is lower than the defined suitable temperature, the temperature control power supply is powered off, and the two-position three-way solenoid valve is controlled to switch to gear A, and cold water is poured into the front end of the cold water pipe of the mixing valve; when the water temperature is overheated, the temperature control power supply is powered on to control The two-position three-way solenoid valve is switched to the B gear, and the superheated water is recovered to the hot water area in the water storage. During the whole process of adjusting the water temperature, the user does not need to open the nozzle.

Beneficial effect

Compared with the traditional storage type electric water heater, the improved device has the following effects:

1. It takes a moment for the user to adjust the water temperature before using the water, and the electricity consumed by heating the water is also wasted. This device uses the backflow mechanism to classify and recycle the water that may be wasted during the water temperature adjustment process according to the temperature.

2. The present invention can ensure that the hot water in the water pipe can be returned to the water storage in time after the water heater is used, reducing heat loss, and also reducing the possibility of easy corrosion and scaling of the hot water pipe.

3. The present invention provides a design idea for energy-saving optimization of storage-type electric water heaters, and is not limited to specific models of water heaters, and is generally applicable to various working conditions and has wide applicability.

Description of drawings

Figure 1: Overall system structure diagram;

Figure 2: Closed-loop return mechanism;

Figure 3: Temperature control shunt mechanism;

Figure 4: The principle block diagram of the system mechanism;

In the figure: 1. Water storage tank 2. Cold water pipe pressure reducing valve 3. AC power supply 4. Water mixing valve 5. Three-way switching valve 6. Pressure micro switch 7. First relay 8. Return pump 9. Shower nozzle 10 . Two-position three-way solenoid valve 11. Second relay 12. Temperature sensor 13. Power adapter

detailed description

This embodiment is an energy-saving and water-saving auxiliary device for a storage-type electric water heater.

Referring to Fig. 1 and Fig. 4, the present embodiment is an energy-saving and water-saving device for a water storage electric water heater, which consists of a water storage tank 1, a cold water pipe pressure reducing valve 2, an AC power supply 3, a water mixing valve 4, a three-way switching valve 5, The pressure micro switch 6, the first relay 7, the return pump 8, the shower nozzle 9, the two-position three-way solenoid valve 10, the second relay 11, the temperature sensor 12, and the power adapter 13; One is connected to the inlet A of the water mixing valve 4 through the pressure reducing valve 2, the other is connected to the water storage tank 1, and then the pipeline drawn from the water storage tank 1 is connected to the inlet B of the water mixing valve 4, downstream of the water outlet of the water mixing valve 4 Install a "T-type" three-way reversing valve 5, the downstream of the circuit outlet B of the three-way reversing valve 5 is followed by the pressure micro switch 6, and the return pump 8 and temperature sensor are installed downstream of the pressure micro switch 6 in the return line 12 and two-position three-way solenoid valve 10. The water pipes that come with the water heater can be connected with 4 water diversion pipes and the mixing valve 4 and the pressure reducing valve 2 through threads, and fixed on the bathroom wall with metal clips and screws. The outlet pipeline downstream of the mixing valve 4 should use metal hoses The material is convenient for taking and placing the nozzle 9, and the joint is used in conjunction with a sealed plastic bag to ensure that water does not leak under actual pressure.

Referring to Fig. 1 and Fig. 2, firstly, the water storage tank 1, the pressure reducing valve 2 of the cold water pipeline, and the water mixing valve 4 are the original materials of the common water storage type electric water heater, so there is no need to repeat them. In the return line drawn from the three-way switching valve 5, the pressure micro switch 6 is first installed. The micro switch can be a one-in-one-out straight valve switch. When the three-way switching valve 5 is switched to the return line, the pressure will change. The trigger switch 6 and the pressure microswitch 6 control the start of the backflow pump 8 through the first relay 7, which can ensure that the three-way switching valve 5 is switched to the backflow block CB to immediately push the water to circulate in the pipe. Since the water temperature of the user will always fluctuate too high or too low during the temperature adjustment period, a temperature control shunt module 12 is arranged behind the return pump 8, and a pipe with a threaded thermal switch that is fixedly connected to the tee pipe can be used. to judge the temperature of the incoming water, and cooperate with the two-position three-way solenoid valve 10 to take diversion and recovery measures. The return pipeline can effectively recover hot water when the user adjusts the water temperature at the initial stage of water use. The user can judge whether the water temperature is appropriate by touching the shell temperature of the three-way switching valve 5, so as to switch the straight-out gear CA to make the shower normally discharge water. When the user uses water After the end, close the mixing valve 4, switch the three-way switching valve 5 to BA again, and start the return pump 8 again, so that all the hot water in the pipeline between the downstream of the mixing valve 4 and the shower nozzle 9 can be pumped back by the pump 8 Water storage tank 1. It is worth noting that when the backflow pump 8 pumps water, the external air enters the pipe from the shower nozzle to supplement the pressure, and finally ensure that there is no hot water in the pipeline.

Referring to FIG. 1 and FIG. 3 , in the temperature control shunt module, the two-position three-way solenoid valve 10 and the temperature sensor 12 all need a matching power adapter 14 to supply power. The return pump 8 draws the water downstream of the mixing valve 4 and the return path to flow through the temperature sensor 12. It can be defined that the temperature switch is energized when the temperature reaches 45°C, and is powered off when the temperature is lower than 45°C. It is controlled by the temperature sensor 12 and the second relay 11 The two-position three-way solenoid valve 10 defines power-on and cuts B to block the water, and the water pipe is connected to the hot water area of the water storage device. Because the density of hot water is lower than that of cold water, hot water can be passed into the high water level area to reduce the flow of cold and hot water in the water storage device 1. Internal mixing causes heat loss; cut off the power and cut A to block the water, and the water pipe is connected to the inlet of the pressure reducing valve 2 at the front end of the mixing valve 4, that is, the part of the water judged as cold water by the temperature control module 12 passes through the mixing valve 4 and hot water again mix.

The energy-saving and water-saving auxiliary device of the water storage electric water heater designed in the present invention adopts the cooperation of the closed-loop backflow and the temperature control shunt module, which recycles and saves the wasted hot water for adjusting the water temperature in the initial stage of using the water heater, and can pass through the water after the user finishes using the water. Manual control recovers the hot water in the water pipe to the water storage tank in a timely manner, and the operation is not difficult. While reducing heat loss, it also reduces the possibility of corrosion and scaling of hot water pipes and pipe joints.

Claims (3)

1. a kind of energy-saving and water-saving servicing unit of storage-type electric water heater, it is by closed loop backflow mechanism and temperature control divergent die Block two parts are constituted；It is characterized in that：Storage-type electric water heater shower nozzle front end arranges a three-way switch valve and draws a backflow Pressure microswitch, reflux pump, temperature control modules and two-bit triplet magnetic valve are sequentially installed with pipeline, the return line, Wherein two-bit triplet magnetic valve draws two branch roads, and the hot water region of storage tank is accessed all the way, and the cold of water mixing valve is accessed on another road Water pipe front end.

2. the energy-saving and water-saving servicing unit of a kind of storage-type electric water heater according to claim 1, it is characterised in that described Closed loop flow back mechanism by external power supply, three-way switch valve, pressure microswitch, the first relay, microdiaphragm pump, temperature control Diverter module composition processed；Wherein three-way switch valve is specially the band handle T-shape ball valve of an One In and Two Out, appoints and takes one of them Effluent pipe mouth draws reflux line, and installs a pressure microswitch in reflux line entrance, for monitoring three-way diverter valve State, pressure microswitch is through the first relay connection control reflux pump.

3. the energy-saving and water-saving servicing unit of a kind of storage-type electric water heater according to claim 1, it is characterised in that described Temperature control diverter module by external power supply, temperature sensor, the second relay, two-bit triplet magnetic valve and pipeline group Into；Wherein temperature control module and two-bit triplet magnetic valve needs external power supply to power, and temperature control diverter module is specially a temperature Control switch, its thermosensitive probe can be fixed in a mouth of pipe closure, and a mouth of pipe for screwing in three-way pipe will be blocked by screw thread, To monitor water temperature in pipe；The temperature detect switch (TDS) for connecting external power supply connects two-bit triplet magnetic valve, a pass through the second relay Go out the hot water region to storage tank, another road leads to the cold water pipes of water mixing valve front end.