
Backflow incense burners, also known as reverse incense burners, waterfall incense burners, or incense fountains, are a unique type of incense holder that creates a mesmerizing visual effect. Unlike traditional incense, which emits smoke that rises upwards, backflow incense is designed to produce smoke that flows in the opposite direction, creating a downward flow that resembles a waterfall. This article will explore the science behind how reverse incense burners work and the steps to use them effectively.
How Does a Reverse Incense Burner Work?
| Characteristics | Values |
|---|---|
| Incense Type | Backflow incense in the shape of a cone or stick |
| Incense Structure | Small, hollow tunnel through the centre, ending in a hole at the bottom |
| Incense Smoke | Dense, flows in the opposite direction of "normal" incense, i.e., downwards instead of upwards |
| Lighting Technique | Light the pointy end of the incense cone with a match or lighter until a small flame appears |
| Extinguishing Technique | Gently fan or blow out the flame or its remnants |
| Burner Design | Traditional designs like dragon incense waterfall or modern interpretations like tea light burners |
| Burner Usage | Incense, aromatherapy, home fragrance, meditation, sacred space, etc. |
| Burner Maintenance | Use a wet wipe or damp cloth to clean oil residue |
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What You'll Learn

Backflow incense burners and their sinking smoke
Backflow incense burners, also known as waterfall incense burners, are a relatively new type of incense. They are designed to guide and direct the incense smoke to flow in the opposite direction of "normal" incense, that is, downwards instead of upwards, creating mesmerizing scenery. The downward flow of smoke in backflow incense burners is achieved through the unique structure of the incense and the burner design.
Backflow incense is typically made in the shape of a cone with a small, hollow tunnel through the centre, ending in a hole at the bottom. Alternatively, it can also be made in the shape of a stick that is completely hollow in the centre, forming a long, thin tube. When the incense is lit, the smoke enters this hollow tunnel, where it begins to cool as it travels along the path. As the smoke cools, it becomes denser, and when it exits the incense cone or stick through the bottom hole, it flows gently downwards, creating the signature reverse flow of backflow incense burners.
To use a backflow incense cone, light the pointy end of the cone with a match or lighter. Ensure that the incense is immersed in the flame until it ignites with a small flame. Then, gently fan or blow out the flame or any remaining embers. The incense is correctly lit when you see a small glowing ember, and smoke starts to emerge from the bottom hole. It is recommended to clean your backflow incense burner after every 2-3 cones to ensure optimal performance.
The unique visual and aromatic experience provided by backflow incense burners has led to their popularity in creating calming and relaxing environments. Different burner designs, such as the Lotus Blossom, Zen Rock Garden, Ocean Wave, and Buddha-inspired burners, offer varied smoke flow patterns and speeds, allowing users to customize their aromatic experience. The slow and continuous flow of smoke in these burners, paired with complementary scents, creates a serene and tranquil atmosphere, making them ideal for meditation, relaxation, and enhancing mindfulness.
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How to light and put out backflow incense cones
Backflow incense is a unique form of incense where the smoke flows in the opposite direction to regular incense, creating a mesmerising waterfall effect. This is achieved by placing a specially designed cone with a small, hollow tunnel and a hole at the bottom, into a backflow incense burner. The smoke will then flow downwards, instead of rising upwards.
To light a backflow incense cone, hold a flame to the pointy end of the cone until it ignites. You may need to immerse the tip of the cone in the flame for a few seconds. Gently blow out the flame and ensure there is a small, glowing ember. The cone should start to produce smoke, which will rise at first. As the cone begins to create ash, the smoke will be blocked from rising and will instead be drawn downwards, through the tunnel, and out of the hole at the bottom.
It is important to note that backflow incense cones should only be used with a specific backflow burner. Regular incense cone burners will not produce the downward flow of smoke.
To put out a backflow incense cone, you simply need to stop the cone from burning. You can do this by gently blowing on the ember, using a fan, or by suffocating the ember by covering the cone with something non-flammable, like a small plate or bowl.
Backflow incense cones produce more residue than regular incense, so it is important to clean your burner after each use. Use a damp cloth or toothbrush with dish soap to remove any sticky oil and ash.
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Why backflow incense smoke flows in the opposite direction
Backflow incense is a special type of incense that produces smoke that flows downwards instead of rising up like traditional incense. This reverse flow is achieved through a combination of the incense's design and the physics of hot and cold air.
Backflow incense is typically made in the shape of a cone, with a small, hollow tunnel through the centre, ending in a hole at the bottom. When the incense is lit, it produces hot smoke that initially rises. However, the design of the backflow cone allows the smoke to pass through the small hole at the bottom, where it quickly cools down.
As the smoke cools, it becomes denser and heavier than the surrounding hot air. This is because cooler air is denser than hot air. As a result, the smoke begins to flow downwards instead of continuing to rise.
To enhance the visual effect of the downward-flowing smoke, backflow incense is often used with specially designed burners, also known as incense waterfalls or incense fountains. These burners feature intricate designs with multiple tiers, paths, or pools that guide the smoke as it flows downwards, creating a mesmerizing and calming display.
However, there may be instances when the backflow incense smoke flows upwards instead of downwards. This can occur due to a few reasons. One reason could be the density of the air inside the home. If the indoor air is denser than the outdoor air due to heating or cooling, it can cause the incense smoke to rise. Opening a window or door can help rectify this issue by allowing fresh air to circulate.
Another reason for the upward flow of backflow incense smoke could be the presence of a draft in the room. A draft can pull the smoke upward, causing it to flow in the opposite direction. Sealing any drafts in the home can help address this issue.
Additionally, the placement of the incense cone on the burner can also impact the direction of the smoke. If the cone is not sitting level on the burner, it can cause the smoke to flow upwards. Adjusting the cone to sit correctly on the burner before lighting it can resolve this problem.
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How to use incense sticks
Reverse incense burners, also known as backflow incense burners, are designed to guide the flow of incense smoke downwards instead of upwards. This creates mesmerizing scenery, with downward-flowing plumes of smoke.
Now, here is a guide on how to use incense sticks:
First, find a suitable incense holder. Incense holders, also known as censers, come in various shapes and sizes. The type of holder you use depends on the type of incense you are using: cored or solid. If you have a cored incense stick, use an incense "boat", a long, thin piece of wood, metal, or ceramic with a tiny hole at one end and a groove down the centre to catch any falling ash. If you have a solid incense stick, do not use a wooden holder as these burn all the way down, and using a flammable material as a censer is dangerous. Instead, use a bowl or cup filled with grain, rice, salt, or sand, and stick the incense inside. You can also use a censer made of ceramic or stone.
Next, put your incense in its holder using the end that isn't covered with incense material. If you are using a backflow incense cone, ensure that the cone has a small, hollow tunnel through the centre, ending in a hole at the bottom centre. Light the pointy end of the incense cone with a match or lighter, and immerse it in the flame until it ignites. Gently blow out the flame once you see a small glowing ember and smoke starts to rise. If you are using a stick, light the tip and blow it out when it is glowing.
Remember to always burn incense in a well-ventilated room, away from anything flammable. Enjoy the aroma!
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The science behind the smoke
Reverse incense burners, also known as backflow incense burners, are designed to guide and direct the flow of incense smoke in a downward direction, as opposed to the typical upward movement of smoke. This creates a visually mesmerizing effect, often referred to as incense fountains or waterfalls. The unique behaviour of the smoke in these burners can be attributed to the science of density and airflow.
When lighting a reverse incense cone, it is important to ensure that the pointy end of the cone is ignited, creating a small flame. Once the flame is gently blown out, leaving a glowing ember, smoke begins to emanate. This smoke is denser than normal air at room temperature due to the presence of tiny particles. As a result, the smoke tends to flow downwards instead of rising.
The downward flow of smoke is facilitated by the design of the incense cone and burner. The incense cone has a small, hollow tunnel through its centre, ending in a hole at the bottom. When placed on the burner, the smoke escapes through this hole and is guided downwards by the shape of the burner. The burner is designed with a specific airflow path in mind, allowing the dense smoke to flow smoothly in the desired direction.
The oil present in the incense, which contributes to its aromatic properties, also plays a role in the smoke's behaviour. This oil can sometimes be observed as residue on the burner, and while it does not affect the burner's function, it can be cleaned if preferred. The oil, derived from plants, contributes to the density of the smoke, influencing its downward flow.
Understanding the science behind the smoke in reverse incense burners enhances the appreciation of these unique aromatic devices. The interplay of airflow, density, and design results in the captivating downward flow of smoke that has made reverse incense burners a popular choice for creating relaxing and aesthetically pleasing environments.
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Frequently asked questions
A reverse incense burner, also known as a backflow incense burner, is a device that makes the incense smoke flow in the opposite direction of regular incense. Instead of the smoke rising, it flows downwards.
The reverse incense burner works by lighting the pointy end of the incense cone with a match or lighter. The incense is immersed in the flame until it ignites, and then the flame is gently fanned out. The smoke will rise initially, but once there is enough ash, it will block the smoke from rising, forcing it to flow downwards.
Backflow incense is usually in the shape of a cone with a small, hollow tunnel in the centre, ending in a hole at the bottom. However, it can also be made in the shape of a stick that is completely hollow.
You can find reverse incense burners on websites such as Amazon and Etsy.












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