3D integration, high efficiency, high speed and stable water temperature: magnesium oxide insulation, metal material casting as a whole, high-speed heat conduction; The size of the heater is 240mm× 100mm×30mm, and the water flow channel of the heater is formed by winding a whole stainless steel tube with a total length of 5.8mm and a diameter of 1 1, and the length of each coil is 520 mm The water flow gradually heats up in the set super-long channel, and the water temperature rises steadily at a uniform speed, completely abandoning the sudden high-temperature heating and boiling water mixing of the traditional cup heater. Combined with the constant temperature control system independently developed by Hangong Electric Appliance Co., Ltd., it can be turned on and heated immediately, reaching any settable water temperature in 8 seconds, and the thermal efficiency is over 99%. It is safe and reliable to prevent water leakage: magnesium oxide with good thermal conductivity and color insulation is ballasted between the inner wall of the heating tube and the Ni-Cr alloy heater, and the gap between the heating tube and the water flow channel is cast and filled with metal material, so that the surfaces of the heater and the water flow channel are completely isolated from the air and the possibility of surface oxidation is eliminated; The waterway is surrounded by stainless steel pipes, and the joint of the water inlet and outlet interface adopts high-pressure stamping interface, without solder joints and welds, which completely eliminates the risk of water leakage and erosion that may be caused by welding. (Water-stainless steel water flow channel wall-integral pouring filling layer-heating pipe wall-insulation layer-heating element) Its structure completely prevents water from contacting the electric heater element, and even if the water pipe or electric heater pipe breaks, it will not make the electric heater element damp or contact with water. The inlet and outlet are connected with nonmetallic water nozzles by movable joints (safe insulation), thus realizing real water-electricity separation.
Reasonable structure and stable electrical performance: the terminal is formed by high-pressure stamping, which avoids contact loss caused by welding or wire burning caused by excessive current of the terminal due to weak welding or false welding; The weight of the heater is 2. 1kg, and the pressure resistance is 2000 v/
Please click to view the patent technical details of 3D MAX integrated ultra-fast heating system (patent number: 201020510413.1).
The "floating magnetic" switch widely used by various instant electric water heater manufacturers, due to the use of magnetic core inside the water nozzle, will weaken its magnetism in water for a long time and its performance will be unstable. When the metal substance in the long-term magnetic water absorption reaches a certain amount, the magnetic core will get stuck in the water nozzle and cannot move. If it is stuck at the bottom, the water heater will not work, but there is no danger. If you get stuck in the upper part of the water tap after use, the signal will not be connected and the water heater will turn on. It is what we usually call dry burning. What is not serious about dry burning is that the over-temperature protector trips and the water heater can't work with electricity. It needs to be reset and the impurities in the water nozzle can be removed before it can be used. When dry burning is serious, it may cause safety hazards such as burns to the human body. The infrared water flow switch developed by Hangong Electric Appliance completely abandons the above defects, accurately measures the inlet and inlet temperatures, transmits the data to a microcomputer for data processing, subtracts the inlet temperature from the set water temperature, and timely adjusts the output power of the heating system in combination with the inlet and outlet temperatures, thus truly achieving the purpose of accurate constant temperature. When the water is stopped suddenly and it is too late to close the water valve, the waterway will return, and no water flow signal will be generated to prevent dry burning. In addition, infrared rays have antibacterial and antiviral functions, effectively purifying water quality and benefiting skin health.
Please click to view the patent technical details of infrared water flow sensor. The quality of the circuit control system determines the use, safety and performance of the water heater. The circuit control system is divided into multi-step control system and constant temperature control system.
Generally, the instant electric water heater has about seven gears, and the heating power is controlled by closing the relay. The quality of relay is related to the quality, life and safety of circuit control system. In the field of instant electric water heaters, the relay quality of Matsukawa, Hongfa and Le Song ranks in the top three. However, due to the high power and high assembly technology of the instant electric water heater, plug terminals are not allowed to be used for connection, and only Matsukawa needs to be connected by bolts. Hongfa or other relays are also used for self-drilling and assembly on terminals. Although the connection is firm, the surface of the terminal has been damaged during self-drilling, and there may be burrs, which may lead to poor contact between the relay terminal and the connecting wire terminal, which may easily lead to heating and wire burning, resulting in danger, or the damaged terminal surface will be oxidized after long-term use, which will also have the same consequences.
The control scheme of double break and double open must be adopted in the wire control system. When the water heater is started and shut down, the two poles of the power supply (live wire and zero wire) should be disconnected or connected at the same time. Many people mistakenly think that the zero line is zero potential and there is no voltage, so there is no fear when disconnecting. Theoretically, we know that three-phase electricity is 380V, that is to say, the interphase voltage (that is, the voltage between one live wire and another live wire) is 380V, while the voltage between single-phase live wire and neutral wire is 220V, which is the so-called unidirectional electricity. When the three-phase loads are completely equal, the voltage on the neutral line is 0V and the current is three-phase. But what is really exciting is not voltage but current, and alternating current is positive and negative. The current changes from fire to zero or from zero to fire, and the cross flow is called alternating current; The unidirectional direct current flowing from the positive electrode to the negative electrode is called direct current. Whether it is AC or DC, it means that the current flows from one pole to the other to form a loop, and the load on the loop can do work, so no matter which side of the current is equal, the greater the current, the greater the harm to the human body. Therefore, it is safe to cut off the bidirectional power supply during shutdown or protection. The control scheme of double break and double open is realized by closing the relay. In the constant temperature control system, SCR is mainly used to adjust the voltage input to the heating system, thus changing the power. Some manufacturers think that relays are used to control live wires and thyristors are used to control neutral wires, which is a wrong understanding. Thyristors are used to adjust the input voltage, not to switch. Many people think that there is no danger when the neutral line is cut off, and the above analysis is also wrong. Even if there is no voltage on the neutral line, there is still current, so it is necessary to disconnect the neutral line. Moreover, the wiring of many families is not standardized and the electricity is not connected according to the national standards, so the electricity environment is complex and dangerous. Therefore, the electric water heater products must adopt the circuit control scheme of double disconnection and double opening to ensure safety.
In the aspect of constant temperature system, Zhongshan Hangong Electric Appliance Co., Ltd. has made a great breakthrough, and the constant temperature effect and speed are also well-known in the industry. Its products are more stable and energy-saving. Many constant-temperature water heaters on the market can keep constant temperature for more than 20 seconds to more than 40 seconds, and it is not uncommon to exceed 1 minute. Zhongshan Hangong Electric Appliance Co., Ltd. can reach the required set temperature in seven or eight seconds.
For water heaters with long constant temperature adjustment time, if the water flow or voltage changes suddenly during the shower, it will take a long time to reach stability due to slow response, untimely power adjustment and great temperature difference, which may easily lead to burns or colds. The electric water heater produced by Zhongshan Hangong Electric Appliance Co., Ltd. changes the water flow or voltage at the same time, so as to keep the temperature unchanged. When the water flow or voltage changes too much, there is a deviation of 1 to 2 degrees, and it will return to the set water temperature in about 3 seconds, which is fast and safe. This requires a high level of control system, and the control scheme and program of microcomputer control chip should be very accurate, which is also a test for the R&D ability of water heater manufacturers. Therefore, when choosing a water heater, you must choose the products of manufacturers with professional R&D strength.
Some manufacturers can't reach the constant temperature height in the control system, so thermostatic valve device is installed at the water inlet. Thermostatic valve is a steady flow device, called steady flow valve, and its cost is about 100 yuan. It is to keep the water flow constant when the water pressure changes, so as to ensure the constant outlet temperature of the water heater. This method seems feasible, but if the voltage changes, the constant temperature cannot be achieved, and after long-term use, the sensitivity of the automatic water stabilizer valve decreases, and the surface of the metal body is oxidized by water or stuck by impurities in water, which will make it unable to work normally. Patents of base appearance: ZL 201130353177.7.
Structural utility model patent: ZL20 1 120396207.7
Sony Ericsson soar instant electric water heater has also made great efforts in appearance structure and applied for a patent for appearance structure. His main techniques are as follows:
1, multi-directional socket: up, left, right and back through the wall, four-way socket design, convenient for different users' power supply locations and different installation requirements.
2. Reinforcement and stability: Reinforcing ribs are added on both sides to make the bottom shell firm and not easy to deform, and fill the gap between the bottom of the water heater and the wall surface, so that the installed machine will not shake at all. 3. Embedded installation groove of the back hanging plate: The embedded installation of the back hanging plate can reduce the total thickness of the water heater, occupy the extra space inside, make the machine more beautiful and elegant, and also reduce the distance between the bottom of the casing and the wall surface, so that the machine installation is more stable and will not shake.
4. Integral rear hanging plate: The rear hanging plate can fix the design of the water heater. Firstly, the rear hanging plate is vertically fixed on the wall, and the lower part is bent to be vertical to the wall with fixing holes. The bottom shell of the water heater also has corresponding screw holes. Hang the water heater on the hook of the rear hanging plate, and then fix the hanging plate with the bottom of the water heater with self-tapping screws. The water heater is very stable and safe. Only by removing this screw can it be removed. Traditional back pendant: it consists of two identical small pendants, one on the top and the other on the bottom. When installing, install one piece first, and then install another piece after determining the position. There are two fixing holes on each piece, and the distance is relatively close, so it is difficult to ensure smooth installation. It is very inconvenient to measure the distance and vertical position when installing another block. Moreover, the water heater can't be fixed when it is hung, and it is light. Once there is external force, if someone accidentally hits it, the water heater will easily fall down, which is very dangerous. )
5. The opening design of the inlet and outlet nozzle holes is convenient for the nozzle to be disassembled and installed independently without disassembling other related or connected devices, thus saving the time of production, assembly and maintenance. 6. The nonmetallic water inlet and outlet are designed to prevent leakage current from flowing to the water inlet and outlet pipes through the water inlet, so as to ensure the safety of electricity use.
7. The water inlet and outlet are designed to be fixed with the bottom shell, which is reasonable in structure and more reliable, and can be disassembled and replaced separately, which is convenient for production and after-sales treatment.
8. The inlet and outlet are equipped with temperature detection devices, which can accurately detect the actual water temperature of the inlet and outlet, and the constant temperature effect of the water heater is more accurate.
9. The interior is divided into: independent heater room, circuit control room, water inlet and outlet room and special trunking. The silicon controlled rectifier is fixed in the low temperature area of the heater. The structural distribution is clear and unified.
10, the electricity-proof wall can be built-in or external.
1 1. Fixing method of the bottom shell: hook the top of the face shell on the top of the bottom shell, cover the bottom shell with the face shell, and fix the bottom with screws after the cover is flat. And is convenient for production and maintenance.