Air outlet size of oil fume purifier

In the catering industry or home kitchen, the size of the air outlet of the oil fume purifier is a key parameter that affects the purification efficiency, installation adaptability, and long-term use effect of the equipment. Many users tend to overlook this detail when making purchases, resulting in problems such as poor ventilation, increased noise, and even decreased purification effect after installation. This article will revolve around“ Oil fume purifier outlet size; This core issue is deeply analyzed from the design principles, standard parameters, adaptation scenarios, and solutions for the Guanglan purifier.

1、 Why is the size of the air outlet important?

The size of the air outlet of the oil fume purifier directly affects the three core performance:

Typical problem: If the rated air volume of the equipment is 5000m³ /h， And the diameter of the air outlet is only 200mm (cross-sectional area 0.0314 ㎡), according to the air volume formula Q=V× A (Q is air volume, V is wind speed, A is cross-sectional area), the calculated wind speed needs to reach 15.9m/s, far exceeding the reasonable range (recommended 8-12m/s), which can easily cause equipment overload.

2、 Standard and calculation of air outlet size

The size of the air outlet should be determined based on the rated air volume and design air speed of the equipment, and the formula is:

Diameter of air outlet (D)=√ [4×Q/(π×V×3600)]

(Q: Airflow m³ /h. V: Wind speed m/s; Π take 3.14)

Common air volume and size comparison table:

• Exhaust efficiency: A small air outlet can increase air resistance, reduce fan exhaust volume, and cause oil fumes to stay in the purifier for too long, affecting the purification effect..
• Noise Control: Unreasonable size can cause airflow turbulence and generate additional noise, especially in open kitchens or commercial spaces where the impact is significant.
• Equipment lifespan: Long term overload operation may damage wind turbines or power plant modules, increasing maintenance costs.

Advantages of Guanglan Purifier: Its commercial series adopts dynamic air volume matching technology, which adjusts the opening and closing of the air outlet in real time through intelligent sensors, ensuring that the wind speed remains stable at 8-10m/s in different cooking scenarios, balancing efficiency and quietness.

3、 Adaptation solutions for different scenarios

• 2000m³ /h: Diameter of air outlet: 160mm (cross-sectional area: 0.02 ㎡)
• 5000m³ /h: Air outlet diameter≥ 250mm (cross-sectional area 0.049 ㎡)
• 10000m³ /h: Diameter of air outlet: 350mm (cross-sectional area: 0.096 ㎡)

Case: A chain restaurant uses a wide blue purifier 8000m³ /The original air outlet diameter of the H model was 280mm, which caused poor exhaust. After replacing it with 300mm, the purification efficiency increased by 12% and the noise decreased by 5 decibels.

4、 Innovative Design of Guanglan Purifier

Guanglan purifier breaks through tradition in air outlet design:

Home Kitchen:

Small equipment (air volume 2000-4000m³); /h) The diameter of the air outlet is usually 150-200mm, which should be consistent with the diameter of the exhaust pipe of the range hood to avoid air leakage at the interface.

Small and medium-sized restaurants:

Airflow 5000-8000m³ /The recommended diameter for the air outlet of H's equipment is 250-300mm, with a 5% margin reserved to meet the exhaust demand during peak hours.

Large scale catering/canteen:

Airflow of 10000m; /At h, the diameter of the air outlet should be 350mm, and a dual air outlet design should be used to disperse the airflow and reduce single point wind resistance.

User feedback: After installing a Guanglan purifier in the kitchen of a certain hotel, the noise from the air outlet decreased from 72 decibels to 63 decibels, and there was no need to frequently clean the accumulation of oil stains.

5、 Common Misconceptions and Solutions

• Adjustable air outlet: By rotating the baffle, the diameter can be dynamically adjusted by 5% -15% to adapt to different installation environments..
• Low resistance flow channel technology: Adopting a gradually expanding air outlet structure, reducing airflow separation and reducing wind resistance by 30%..
• Silent coating: The inner wall of the air outlet is covered with polymer sound-absorbing material, effectively suppressing high-frequency noise..

Purchase Tip: When choosing a Guanglan purifier, parameters such as kitchen area, number of stoves, and exhaust pipe length can be provided. Its AI selection system can accurately recommend the size of the air outlet and matching plan, avoiding manual calculation errors.

Reasonable design of the air outlet size of the oil fume purifier is the core link to ensure efficient operation of the equipment. From home kitchens to large dining establishments, comprehensive selection should be made based on actual air volume, scene requirements, and pipeline conditions. Guanglan purifier provides users with dynamic adjustment technology, low resistance flow channel design, and silent optimization; Tailored to measure” A solution that truly achieves a dual improvement in purification efficiency and user experience. Whether it's installing new equipment or upgrading, choosing the appropriate size of the air outlet is a crucial step towards a clean kitchen.

Misconception 1: The larger the air outlet, the better

Analysis: An excessively large air outlet can lead to insufficient wind speed, resulting in incomplete purification of oil fumes before they are discharged. It is necessary to balance the cross-sectional area and air volume.

Misconception 2: Ignoring the impact of pipeline length

Analysis: For every 1 meter increase in the exhaust duct, the effective air volume decreases by about 3%, and the outlet diameter needs to be correspondingly increased to compensate for the loss.

Misconception 3: Failure to reserve maintenance space

Suggestion: A 20cm operating space should be reserved around the air outlet for regular cleaning of the filter screen and maintenance of the fan.