1 Introduction
A storage-type electric water heater is a large-scale electric water heater that can store hot water for a long or short period of time. This encyclopedia will focus on the principle of a storage-type electric water heater. The ranking of storage-type electric water heaters, how to use storage-type electric water heaters, the installation of storage-type electric water heaters and other aspects will be systematically elaborated on the storage-type electric water heaters.
2 Principles of storage-type electric water heaters
The principles of storage-type electric water heaters are basically the same. There is an electric heating tube inside, which heats hot water after the power is turned on. The specific process is: the pressure of the cold water pipe network is at the bottom of the water storage barrel. The heating pipe in the barrel is controlled by a timer, thermostat, etc. and is heated after being energized. The cold water gradually becomes hotter. Because hot water is lighter than cold water, it will Open the faucet on the upper part of the water storage bucket, and cold water will flow into the bucket due to atmospheric pressure, thereby pushing out the hot water in the upper part.
3 Types of storage-type electric water heaters
Storage-type water heaters are divided into closed and open types according to the outlet type. The water flow from the water outlet of the former is controlled by one or more valves. Control, installation is convenient and flexible, heat loss is small, and water outlet pressure is high, but the inner tank needs to be made of thick materials and has high process requirements; the water volume of the latter is controlled by a valve in the water inlet pipeline. Since it works under normal pressure, the internal pressure is The requirements for courage are not high and the structure is not that complicated.
Storage-type electric water heaters are divided into wall-mounted and floor-standing types according to the installation method. The former has two types: wall-mounted horizontal type and wall-mounted vertical type. Wall-mounted horizontal electric water heaters are hung horizontally on the wall, and wall-mounted vertical electric water heaters are hung vertically on the wall. Both require the wall to have good bearing capacity, and the capacity should not be too large, generally less than 100L; floor-standing electric water heaters The water heater is installed vertically on the ground and has a relatively large capacity.
4 Advantages and disadvantages of storage-type electric water heaters
Advantages: Compared with instantaneous and instant-heating electric water heaters, storage-type electric water heaters are relatively safer. This kind of electric water heater can provide hot water through multiple pipelines. In addition to its main function of bathing, it can also be used for laundry and vegetable washing. It is simple and quick to install and easy to operate.
Disadvantages: Storage-type electric water heaters are usually larger in size and require a longer preheating process before using water. If the water consumption exceeds the rated hot water production capacity, it needs to be reheated. For members, compare Many families have to wait for the water to heat up when taking a bath. If there is still hot water left after bathing, it will gradually cool down and the hot water will be wasted. This kind of electric water heater has a high heating temperature and is prone to scaling. It needs to be cleaned by a dedicated person, otherwise it will affect normal use.
5. Which brand of storage-type electric water heater is better?
1. Ariston
Ariston Thermal Energy Group is the top water heater manufacturer in Italy and even the world. Providing a full range of heating and hot water solutions. Ariston integrates technology and environmental protection into the manufacturing of storage-type electric water heaters, bringing a new smart bathing experience. The independent dual-gallbladder design heats up quickly and reduces waiting time; the patented double-gallon protective bladder is corrosion-resistant and has a long service life.
2. Sacon Group
Sacon Group is a domestic provider of high-end kitchen and bathroom appliances. It has the largest and most complete series of kitchen and bathroom appliance manufacturing bases in China and internationally leading technologies. The water heater product is used in the Bird's Nest, which is the only one in China. Sacon's storage-type electric water heater uses a sapphire tempered enamel inner tank and uses a CT health protection system to detect scale. It is healthy and durable and applies a number of patented safety protection technologies to ensure safety.
3. A.O. Smith
A.O. Smith is the largest water heater brand in the United States, providing water heater system services to users around the world, and its products are used in chain stores such as KFC and McDonald's. Smith's storage-type electric water heater applies a patented fast-forward heating system, which heats quickly. The patented MAX rapid heating/heat storage 2-in-1 technology can automatically compensate for heating and replenish hot water.
4. Midea
Midea Group is a large domestic appliance manufacturing enterprise. It owns two listed companies, has rich product categories and series, and has strong production strength.
Midea's water storage electric water heater uses a high-grade blue diamond inner tank, and is attached with a low-carbon steel plate and a high-temperature calcined blue coating. It is strong and durable, and has dual-core temperature control to keep the temperature of the electric water heater at 30 to 75°C.
6 Storage-type electric water heater installation
Installation steps
(1) Installation location: Make sure the wall can withstand twice the weight of the water heater filled with water , the fixings are installed firmly; make sure there is space for maintenance of the water heater.
(2) Water pipe connection: A pressure relief valve is connected to the water inlet of the electric water heater (blue plug), and the hot water pipe should be connected from the water outlet (red plug). Raw tape should be used at the pipe interface to prevent water leakage. At the same time, the safety valve should not be tightened too tightly to prevent damage. If the water pressure in the water inlet pipe is similar to the pressure relief value of the safety valve, a pressure reducing valve should be installed on the water inlet pipe away from the water heater.
(3) Power supply: Make sure the electric water heater is reliably grounded. The socket used must be reliably grounded.
(4) Water filling: After all the pipes are connected, open the faucet or valve, then turn on the hot water to fill the water heater, and discharge the air until there is water flowing out of the hot water faucet, indicating that the water has been filled. Turn off the hot water faucet and check all connections for leaks. If there is a leak, drain the tank, repair the leaking connection, and refill the water heater.
(5)Installation location:
a. The electric water heater must be installed on a horizontal surface.
b. The electric water heater should be installed close to the floor drain. The water heater should be installed in a location such that water leaking from the water heater or its connections will not cause damage to adjacent areas or to the lower floors of the structure; if the above requirements cannot be met, a suitable water tray should be installed under the water heater. This drain pan should have sides, at least 5cm deep, its length and width should be at least 5cm larger than the diameter of the water heater, and should be connected to a suitable floor drain with a pipe.
c. The installation location of the electric water heater should be close to the location where hot water is mainly used and the power source.
d. Electric water heaters should not be installed in places where freezing may occur.
(6) Water pipe connection: Ensure that there is no leakage in the pipeline. If the cold water supply pipeline of the building has a backflow prevention device, a check valve or a water meter with a check valve, it must be equipped in the hot water system. Water supply expansion mechanism. When multiple units are connected in parallel, the branch pipes to all water heaters must be of the same size and length to ensure balanced flow.
(7) In places with hard water, it is recommended to carry out water softening treatment.
(8) Electrical: There is an electrical ground to reduce the risk of electric shock or possible electric shock. The water heater should be reliably grounded. Each commercial electric water heater should be equipped with an air switch with overload protection and leakage protection. Do not energize the water heater until it is filled with water.
(9) Water filling: After all the pipes are connected, open the faucet or valve, then turn on the hot water to fill the electric water heater, and discharge the air until there is water flowing out of the hot water faucet, indicating that the water has been filled. Turn off the hot water faucet and check all connections for leaks. If there is a leak, drain the tank, repair the leaking connection, and refill the electric water heater.
7 How to use storage-type electric water heaters
Please follow the following operations when using it for the first time:
1. Confirm that the tap water has been connected to the water heater and is turned on. With.
2. Open the mixing valve at the hot water position and see if there is water flowing out. If no water flows out, judge whether the water is being filled. The water will be discharged with air. Wait until water comes out, and then close the mixing valve. water valve.
3. Plug in the power supply and turn on the leakage switch on the power cord. At this time, the working indicator light of the electric water heater will light up. Wait for about 30 minutes, then open the mixing valve to the hot water position. If the water is hot, it will It can be used. If it is not hot, just wait for the water heater to heat up.
4. Generally, the water mixing valve is opened when lifted up and closed when pressed down. The upper left is hot water, the upper right is cold water, and the middle is mixed water. It gets colder from left to right. Of course, the brand does not vary. There are also different operating methods, and consumers have to consult the instructions for use.
5. When using it in the future, you only need to turn on and off the mixing valve. If it is not used for a long time, unplug it.
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