Core Value

Commercial rice steamers and industrial food warming cabinets operate by continuously boiling shallow pools of water to generate high volumes of steam. This process places immense stress on the heating element. A standard straight or single-U heater lacks the surface area to generate enough steam quickly, and pushing high wattage through a small surface area results in an excessively high watt density. In boiling water, a high watt density causes calcium and magnesium (scale) to rapidly bake onto the heater, acting as an insulator that ultimately causes the internal resistance wire to overheat and snap.

The 220V Folded Double U Shape Immersion Water Heater For Rice Steamer resolves this critical engineering bottleneck. By folding the tubular element back on itself, HT Heater effectively doubles the active heat-transfer surface area while keeping the overall length short enough to fit inside a shallow steaming pan.

This expanded geometry gently and efficiently dissipates massive thermal energy (typically 2kW to 4kW) into the water. The lower surface temperature dramatically slows the accumulation of mineral scale, extending the heater’s lifespan even in hard-water commercial kitchens.

To ensure food safety and structural integrity, the sheath is constructed from seamless SUS304 or SUS316L stainless steel. The element is mounted using precision-machined brass or stainless steel threaded bulkhead fittings, which are deep-silver-brazed to the tubes to guarantee a 100% leak-proof seal beneath the water line.

• ✓ Maximized Steam Generation: The overlapping Double U geometry provides the massive surface area necessary for rapid boiling and continuous, high-volume steam output.
• ✓ Space-Saving Footprint: Fits perfectly into the shallow, confined water trays of multi-deck commercial rice and seafood steamers.
• ✓ Anti-Scaling Performance: The lowered watt density prevents aggressive calcification, drastically reducing commercial kitchen maintenance downtime.
• ✓ Leak-Proof Bulkhead Mounting: Heavy-duty threaded fittings with high-temperature silicone gaskets ensure watertight installation through the steamer basin wall.
• ✓ Direct OEM Supply: Fully customizable immersion lengths, wattages, voltages, and thread sizes manufactured to scale by HT HEATER.

Technical Specifications & Performance Data

Industrial Applications & Solutions

This rugged, shallow-tank immersion heater is the thermal engine for high-volume commercial food preparation:

• Commercial Rice Steaming Cabinets: Generates the massive, continuous steam required to evenly cook multi-deck trays of rice in large-scale Asian catering facilities and cafeterias.

• Dim Sum & Seafood Steamers: Provides rapid rolling boils in shallow water trays to maintain the precise humidity and temperature needed for delicate foods.

• Bain-Maries & Food Warmers: Maintains hot water baths at safe serving temperatures in buffet lines and commercial restaurant service stations.

• Commercial Dishwasher Sumps: Heats the shallow wash-water reservoirs in under-counter and conveyor-type commercial dishwashing equipment.

HT HEATER Advantage: Why Choose Our Steamer Elements?

Installation & Handling Guidelines

• Mandatory Complete Submergence: The active heating length of the Folded Double U Heater must remain entirely submerged in water. Dry-firing is the #1 cause of heater failure in rice steamers. Always ensure the steamer is equipped with a functional automatic water-fill valve or float switch.

• Proper Gasket Sealing: Place the silicone sealing washer on the inside of the water tray (between the tank wall and the heater’s fixed flange). Pass the threaded fittings through the holes, and firmly tighten the locknuts on the outside of the tank. Do not overtighten and crush the gasket.

• Elevate from Sump Floor: Ensure the heater is mounted slightly above the floor of the water tray. If the element rests directly on the metal bottom, it will trap sediment, overheat, and short-circuit against the chassis.

• Aggressive Descaling Schedule: Because steamers boil away pure water, they leave behind heavy mineral deposits. Scale acts as a thermal blanket that will destroy the heater. Kitchen staff must establish a strict daily or weekly maintenance schedule to soak and clean the element with food-safe descaling acid (e.g., citric acid).

Customer Success Stories

Case 1:

Commercial Asian Kitchen OEM (Malaysia)

• Application: 12-tray and 24-tray commercial rice steaming cabinets for university cafeterias.

• Challenge: The previous straight heating elements could not recover steam fast enough when frozen items were placed in the cabinet, leading to extended cooking times and unevenly cooked rice on the top trays.

• Solution: Partnered with HT HEATER to integrate the 220V Folded Double U Shape Immersion Heater. The folded geometry allowed us to safely pack 4000W into the small boiling reservoir.

• Results: STEAM RECOVERY TIME CUT BY 40%. The massive surface area generated aggressive, rolling boils instantly. The OEM’s steamers achieved perfectly uniform cooking across all 24 trays, vastly improving their market reputation.

Case 2:

Chain Restaurant Equipment Supplier (USA)

• Application: Shallow-tray steam tables and bain-maries.

• Challenge: Hard water in various franchised locations was causing generic heater elements to calcify and burn out within 3 months, resulting in unacceptable maintenance costs.

• Solution: Transitioned to HT Heater’s expanded double-U elements. By maximizing the surface area, the watt density was lowered to a highly scale-resistant level.

• Results: HEATER LIFESPAN TRIPLED. The lower surface temperature dramatically reduced the rate of calcium baked onto the sheath, allowing the restaurants to easily clean the elements during routine maintenance without premature burnouts.

Pricing & Procurement Options

• OEM Customization: Tailored shapes, custom cutout holes for pipe nozzles, specialized voltage/wattage configurations, and custom strap lengths.
• Lead Times: Custom samples: 3–5 working days. Bulk production orders: 8–12 working days upon technical drawing sign-off.
• Packaging & Shipping: Individually bagged with protective foam padding and packed into heavy-duty 5-ply export cartons to prevent bending or lead wire stress during international transit.
• Minimum Order Quantity (MOQ): Low MOQ starting at 5–10 units for custom dimensions; competitive volume pricing tiers for equipment manufacturers.

Global Certifications & Compliance

• CE Marking
  Fully compliant with European safety and environmental standards.
• LVD Compliance
  Low Voltage Directive tested for continuous thermal load safety.
• RoHS Compliant
  Constructed using environmentally safe, lead-controlled brass alloys.
• ISO 9001
  Certified quality control covering CNC machining, coil pressing, and electrical testing.

Quality Documentation: Certificate of Conformity (COC) and insulation resistance test reports included.

Comprehensive After-Sales Support

• • Warranty: 1-Year Comprehensive Warranty covering internal heating element and built-in sensor.

  • Technical Support: Application engineers available for wattage distribution calculation, thermocouple calibration, and nozzle fitting assistance.

  • Global Response Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE with technical inquiry feedback within 2 hours.

Ready to Optimize Your Injection Molding?

Next Steps:

• 📧 Request Custom Quote – Send your nozzle dimensions, wattage, voltage, and HT-CLW-450 drawing requirements.
• 🔧 Free Design Consultation – Work with our thermal engineers to optimize heat distribution and lead insulation.
• 📦 Order Test Samples – Evaluate thermal performance on your injection molding machine.
• 📞 Contact Hot Runner Experts – Response within 2 hours

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