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Electric steam humidifier (integrated type)
Uses pure water, resulting in low maintenance costs. <br/> Isothermal humidification—no preheating of air required, and complete sterilization achieved. <br/> The electric heating tube is made of corrosion-resistant high-nickel alloy (with a nickel content of over 30%), offering resistance to high voltage and high current. It also features a low-wattage density design, ensuring a long service life. <br/> Multiple overheating protections to prevent dry burning. <br/> Proportional output control with high control accuracy, reaching ±3% (standard SSR; SCR is also available as an option). <br/> The humidification capacity per unit can reach up to 45 kg/h, and it features excellent scalability, allowing multiple units to be connected in parallel.
If the relative humidity of the air is too low, the adhesion of the paint will decrease. On the other hand, if the relative humidity is too high, the glaze layer sprayed onto the product may become excessively diluted, forming tiny liquid bubbles. As these bubbles evaporate during drying, they can lead to poor spraying results and the formation of fine pits on the sprayed surface.
Category:
Steam Humidification
Keywords:
Renjie
Hotline:
Product Description
If the relative humidity of the air is too low, the adhesion of the paint will deteriorate. On the other hand, if the relative humidity is too high, the glaze layer sprayed onto the product may become excessively diluted, forming tiny liquid bubbles. As these bubbles evaporate during the drying process, they can lead to poor spraying results and the formation of fine pits on the sprayed surface. We must listen carefully to and thoroughly understand our customers’ needs, then meet those needs and even exceed their expectations—this is “Ren.” We strive relentlessly to maintain the highest product quality and continuously introduce innovative new products, creating greater value for our customers, becoming the most innovative enterprise, and earning widespread acclaim as a supplier in the markets we serve—this is “Jie.”
Structural diagram
Working principle
(1) The thermal energy generated by passing an electric current through a resistor is used to heat pure water, producing steam. The steam is then distributed throughout the air-conditioning unit or ductwork via a steam distribution pipe to humidify the air.
(2) Its primary operating mode involves the control box activating single or multiple sets of electromagnetic relays or SCR silicon-controlled rectifiers according to the humidification demand, thereby controlling the heat output of the electric heating tubes to generate the required amount of humidification.
(3) The electric heating tube is the core component, and its stability, service life, and reliability are extremely important.
(4) The manufacturing method of electric heating tubes involves evenly distributing high-temperature resistance wires in the central position inside a high-temperature-resistant stainless steel tube. The gaps around these wires are densely packed with crystalline magnesium oxide powder, which boasts excellent thermal conductivity and insulation properties. This structural design not only secures the resistance wires in place but also ensures high thermal efficiency and uniform heat distribution. When an electric current passes through the high-temperature resistance wires, the resulting thermal energy is conducted via the crystalline magnesium oxide powder to the surface of the metal tube. From there, the heat is transferred through thermal conduction and thermal convection, ultimately heating pure water to produce steam and humidifying the air.
Product Features
(1) The electric heating tube is made of imported Inconel material, with nickel and chromium contents as high as 30% and over 20%, respectively. It features excellent corrosion resistance, high-voltage resistance, high-current resistance, and a long service life.
(2) By leveraging the preheating function inherent in phase-controlled SCR power regulators and their control systems, it is not only possible to achieve linear proportional control of steam output, but also to attain a control accuracy of up to ±1% RH.
(3) Multiple overheat protection features to prevent dry burning.
(4) Leakage current, short-circuit, and overcurrent protection allow for early detection of electric heaters with quality abnormalities, thereby preventing potential accidents. These features also enable verification of the manufacturing quality of electric heaters, resulting in exceptionally high safety.
(5) Using pure water can significantly reduce maintenance requirements, or even eliminate the need for maintenance altogether.
(6) Since pure water can be used, the steam generated can meet hygienic requirements to the greatest possible extent.
(7) The water surface skimmer removes mineral impurities that float on the water’s surface, preventing water contamination from being released along with the steam.
Scope of application
Laboratories with high precision requirements, operating rooms with stringent hygiene standards, hospitals and food processing plants, as well as physical facilities with an ample supply of on-site purified water (deionized water), etc.
Considerations for Choosing an Electric Steam Humidifier
(1) If there is excess purified water available on-site, using purified water for humidification can reduce or even virtually eliminate maintenance costs.
(2) Thanks to the use of pure water, there’s no need for frequent water intake and drainage. Moreover, by leveraging the phase-controlled SCR power regulator and its built-in preheating function, this system not only achieves linear proportional control of steam output but also attains a control accuracy of ±1% RH. Therefore, it is ideally suited for applications requiring high precision, such as laboratories.
(3) Among currently available humidification methods, the electric heating steam humidifier (using SCR) is the one that can achieve a humidity control accuracy of ±3% RH or better.
(4) Isothermal humidification, complete sterilization, and the use of pure water make this system suitable for environments with particularly high hygiene requirements, such as operating rooms.
Dimensional drawing
Technical Parameters
| Model |
Humidification capacity (Kg/h) |
Power (KW) |
Current (A) |
Steam outlet |
Dimensions (mm) |
Shipping weight | Operating weight | ||
| long | Wide | High | |||||||
| EHDI 6 | 8.2 | 6 | 9.1 | ∅38 | 615 | 409 | 472 | 40 | 55 |
| EHDI 9 | 12.2 | 9 | 13.7 | ∅38 | 615 | 409 | 472 | 40 | 55 |
| EHDI 12 | 16.3 | 12 | 18.2 | ∅38 | 615 | 409 | 472 | 42 | 63 |
| EHDI 16 | 21.8 | 16 | 24.3 | ∅38 | 615 | 409 | 472 | 42 | 63 |
| EHDI 21 | 28.6 | 21 | 31.9 | ∅38 | 615 | 409 | 472 | 43 | 69 |
| EHDI 25 | 34 | 25 | 38 | ∅38 | 615 | 409 | 472 | 43 | 69 |
| EHDI 30 | 41.4 | 30 | 46 | ∅50 | 615 | 409 | 472 | 46 | 71 |
| EHDI 34 | 46.2 | 34 | 51.3 | ∅50 | 615 | 409 | 472 | 46 | 71 |
Product accessories
Steam piping
Diffusion device
Steam distribution pipe (standard configuration)
Terms of Use
1. Water supply: Pure water or deionized water.
2. Power supply: Standard voltage is 380V.
For every 1 kg/h of steam production, the power consumption is 0.75 kW.
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Te: 0086-769-22822736 / 22822946
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