Main Functions of a Bioethanol Fireplace

A bioethanol fireplace serves three main purposes: creating decorative ambiance, providing auxiliary local heating, and acting as a flexible, vent-free fire source. Its core value, however, leans toward decoration and atmosphere rather than serving as a true primary heating appliance.

1. Decoration and Ambiance Creation (Primary Value)

  • The visual beauty brought by the dancing real flame is irreplaceable by electronic simulated flames.
  • Frequently used as a visual focal point in living rooms, dining rooms, and hotel lobbies, elevating the sophistication of the space.
  • Flame color can be adjusted by adding different salts (e.g., blue, green, etc.).

2. Auxiliary Local Heating

  • The heat output of a single unit is limited, typically warming a small area of 5–15 m²​ around it.
  • Suitable as an auxiliary heat source in spring/autumn or winter, allowing people to feel warmth by the flame.
  • Unlike wood-burning fireplaces, it cannot drive the heating system of an entire room.

3. Flexible Installation, No Chimney Required

  • Combustion produces only water and carbon dioxide, eliminating the need for a traditional chimney.
  • Can be recessed into walls, placed as a standalone unit, or even mounted on glass partitions.
  • Ideal for apartments, lofts, and commercial spaces where flue modification is impractical.

Diaphragm Pumps in Bioethanol Fireplaces

In bioethanol fireplaces, a diaphragm pump is typically used in automatic fuel-feeding models to quantitatively transfer bioethanol from the reservoir to the combustion chamber​ (some atomizing-type fireplaces also use it as a liquid supply pump). The pump is required to deliver small-flow precision metering, ethanol compatibility, and zero leakage—rather than pursuing large flow rates and high head pressure like industrial transfer pumps.

NIDEC EPDM Miniature Diaphragm Pumps: A Proven Solution

NIDEC's EPDM miniature diaphragm pumps have been widely validated as a viable solution in the bioethanol fireplace industry, with the following advantages:

Ethanol–EPDM Compatibility: "Excellent" Grade

According to authoritative rubber material compatibility data sheets, EPDM is rated "Excellent"​ for ethanol compatibility, with volume expansion <15%. Industry material selection guides for pneumatic double-diaphragm pumps also explicitly list EPDM as a diaphragm material suitable for alcohol.

Excellent Flow Stability and Consistency

  • Adopts a three-cylinder 120° uniformly distributed structure, minimizing flow pulsation.
  • Brushless DC motor supports PWM speed control + Hall closed-loop control, with a motor speed range of 60–5500 rpm.
  • Achieves flow control from 5 ml/min to 320 ml/min​ with high flow repeatability.

Long Service Life

  • Rated service life ≥3000 hours; brushless versions deliver an actual average liquid pump life of approximately 10,000 hours.
  • Diaphragm and rubber component life matches that of the motor, ensuring high overall reliability.

Quiet Operation

  • NIDEC miniature diaphragm liquid pumps are driven by brushless DC motors, operating at low noise with built-in protection circuits—meeting the quietness requirements of fireplaces as residential/commercial ambiance devices.

Fluorination Treatment

To reduce and delay adhesion between plastic and rubber parts after prolonged pump idle periods, the plastic components undergo fluorination treatment.

NIDEC Diaphragm Pump Models Currently Used in the Bioethanol Fireplace Industry：00H220H012 （12V），00H704K610（12V），00H220H035（24V）