!!! I made the rocket stove into a product that can be mass-produced

I have made improvements based on the principle of batch rocket furnaces and continued mass production, which can be sold and shipped to various parts of the world through logistics

Do you have photos?

I have uploaded the attached image

Rocket stove with two observation windows

So it's a stove rather than a mass heater.

What are the improvements over a batch box?

What is the fire-box made of?

Is there a secondary air intake for re-burn?

Rocket stove with added oven functionoven function

This is the main body of a rocket stove, which can be used as a fireplace by attaching a chimney separately, or as a complete rocket stove by attaching it to a thermal mass sofa. It uses customized refractory bricks and ceramic fiberboard that can withstand high temperatures above 1300 degrees and work well.
The combustion chamber is fixed with high-temperature adhesive and reinforced with angle iron, so it can be transported over long distances without damage.

Well your pictures looks really great but without a lot more info about how it works and how it performs in different conditions, it is impossible to congratulate you for your design.
Please tell us more about its design, performance and testing.

Am curious,  one of your photos shows two windows, I presume, the lower is the fire box and the second shows a port which appears to be on top where the fire is viewed there as well, Does this area have a chamber, or just open to the entire barrel?  And you have been asked about secondary air, but I will second that question.  I know it has been done, but almost always requires directed secondary air, is this what you have done?

In another photo, the top window is dark with the bottom having a fire, and the word oven, is indicated? Where does the fire go then?

In another photo, you have the flue attached to the barrel top ( I think ) and then a pipe attached to the lower portion of the barrel to a bench but I don't see a exit out of the bench shown,    How is this working, what makes the "heat" go into the bench?  I must not be seeing this right?

Your burn chamber door appears to be 30-40% of the width of barrel,  6" size?   if it is that large,  how are you extracting that much heat with ONE barrel and NO bench like in one of your photos?  Maybe it is much smaller than it appears?

You indicate this is " shippable or a viable mass produced item"  The firebox chamber, has some fire brick in it,  so are the brick installed after shipping?

This is a information intensive gathering group, ( which is a good thing ) So please do tell.

thank you for posting your photos.

Fox James wrote:Well your pictures looks really great but without a lot more info about how it works and how it performs in different conditions, it is impossible to congratulate you for your design.
Please tell us more about its design, performance and testing.

I keep looking at the photos and wondering too. I can't see a secondary air intake, and I can't see if it's actually rocketing, I can't figure out if reburn is happening. But I really, really *want* it to be a real rocket stove.

Our rocket stove uses stainless steel pipes for secondary air intake, which can be replaced and maintained

Congratulations to you, Laisen Lee. My compliments for your guts to "think big" and offer the world a clean woodstove. Very curious to see more of your initiative. I wish you luck!

Wow looks really interesting, cant wait to see it in action, do you have a video?

Mr Lee, I think many of us are curious to see your responses to the numerous questions already posted to this thread.

The following is just guessing, based on what is visible.
Looking closely at the pictures and studying the text, I'd think it is a DSR2 batchrocket. There might be a design altering or two, I don't know. The lower part of the core is appearing to house the firebox with a space behind it, maybe the short riser? In one of the pictures (IMG_3475.jpg) there is a port in the backwall of the firebox, faintly visible. The end port is at the top (stove.jpg), although not at exactly the same position as in my development model. This is the clearest picture that shows its DSR2 origin.

Some pictures seem to show lower cores without a top box, also without a ceiling though. Maybe a separate top box was mounted on later and it seems the picture with the frame around the complete core is the current version. The steel parts seems to be laser cutted, bended and welded. The machine in picture -7.jpg is probably the bending device. Regarding the smaller pipes on top of the barrel: this could be the secondary air inlet as the text says they are using stainless steel for that, visible in picture stove1.jpg. And last but not least, the showed combustion temperature of 1049 ºC (1920 ºF) in picture IMG_3475.jpg is what I would expect from a well-behaving batchrocket of whatever model.

It's up to you, mr. Laisen Lee, to acknowledge what's in there and how it all works. All according to the Creative Commons Attribution-ShareAlike 4.0 International license.

My rocket's thermal riser is made of ceramic fiber board material that can withstand 1400 degrees Celsius, and it is designed with a triangular geometric structure to generate more turbulent rotating flames, which also saves material for the thermal riser and reduces weight
My rocket stove mainly uses customized refractory bricks, ceramic fiberboard, and ceramic insulation cotton as the main materials
I used stainless steel square tube to make the secondary air inlet duct

This looks very much based on Peter van den Berg's work with DSR and BBRs.
Given that work has been licensed under CC, why not give the right attribution ? There's no problem with acknowlegding that and selling the produce showed in photos.

On the other hand great deep diving in mass production, but first things come first.

It all sounds very exciting, I think it is fantastic that somebody has taken the bull by the horns and made a substantial investment!

I am not a fan of ceramic fibre myself but at least one person in the picture is wearing a mask!

I hope there will not be easy access to the ceramic fibre components and all the suitable warnings will be in place regarding the danger of using such products?

Of course there are lots of crucial information that has not been released to us as yet, not least of all the price and availability?
In any case I really do commend  you for getting this far and wish you the best of luck for the stoves future development.

This is an introduction to our rocket stove using triangular rocket heat pipes
  https://youtube.com/shorts/bkaFAPceFgg  

If it has been mentioned, I apologize, but where are these being made and how much in US Dollars to buy one?

The triangular rocket heat pipe we developed and tested has excellent performance

I like the way you stuck it all in one barrel.
And your workmanship looks great.

I don't know much about rocket stoves but I have seen some with the vertical secondary air supply tubing that is replaceable.
Since that takes a lot of heat.
New one just drops into place.
Even though yours is stainless.

So you have two designs in the portfolio, one with a straight triangular riser. The other one with a second box that's laying horizontally on top of the firebox while the port is in the ceiling. As such, the second one is very much alike the DSR1, not the DSR2 as I mentioned before.

You said you tested the stoves and reached very good results. Did you use a gas analiser for those tests or just a digital thermometer? In my opinion, altering the design could lead to stoves that aren't performing well although the flame pattern would look spectacular. In my experience, flames that come out of the riser are signalling incomplete combustion.
But it's your business, I won't interfere with it.

As long as you are giving proper attribution to the original designer and publish what you've changed you could do what you want with it. Apart from that, the license is completely free of charge by the way, it won't cost you any money.

If you want, I could test the stoves here at home with a recently calibrated Testo 300 gas analiser. No cost involved, I am curious that's all. The only snag here: I am half a world away from you, in the Netherlands. :)

Peter van den Berg wrote:If you want, I could test the stoves here at home with a recently calibrated Testo 300 gas analiser. No cost involved, I am curious that's all. The only snag here: I am half a world away from you, in the Netherlands. :)

That's an amazing offer Peter. I hope they take you up on that offer. It looks like the core is based on one of your designs so to have the official 'stamp of approval' on it would be brilliant.

As long as you are giving proper attribution to the original designer and publish what you've changed you could do what you want with it. Apart from that, the license is completely free of charge by the way, it won't cost you any money.

Mr. Lee;
A very nice-looking stove.
It resembles Uncle Muds Cottage rocket with Peter Bergs DSR 1 stove inserted inside.
We would like to know if you intend to give credit to the developers.
What do your stoves cost for both styles?
Where are they available to purchase?
Are they in the US?
What are the shipping costs involved in receiving this stove?
Do you have testimonials/feedback from your buyers?  

My rocket stove is based on Mr. Peter van den Berg's DSR1 and DSR3 design improvements. We have completed design testing and mass production in China, and currently have sales in China with good customer feedback!
I really want Mr. Peter van den Berg to test my rocket stove, but we are too far away from you. Our average weight of the stove is only about 80kg, and the transportation and logistics costs are relatively high.
We currently produce four types of furnaces, one with a small size: the furnace is 70 centimeters high and 40 centimeters in diameter, the other three are 86 centimeters high and 55 centimeters in diameter, the combustion chamber is 30 centimeters high, 20 centimeters wide and 30 centimeters deep, and the triangular rocket heat riser is 80 centimeters high.
There are two types of stoves with added oven functions, one with a DSR1 like structure and the other without an oven, and the other with a DSR3 like dual burner and a second combustion chamber.
I want to sell these stoves in Europe and the United States. It would be even better if there were distributors willing to cooperate with us, so that our stoves can be used by more people! By email: 131liqiang@163.com Contact us. Friends who need personal purchases can also contact us, thank you!

Our furnace is designed with ceramic fiber board that can withstand 1400 degrees Celsius. The triangular rocket heat riser saves materials and reduces the weight of the furnace. The firebox is made of customized large refractory bricks and insulated with ceramic fiber blankets on the outside.
Our furnace chimney outlet is placed on the left or right side below the barrel, which makes it easier to connect the thermal mass

Pricing range?

Mr. Lee, before your stoves can be sold in the EU, those need to gain offical approval by the EU authorities. This testing is a costly affair, each stove version has to be tested separately. Cost of testing just one stove is around €4000.-, according to my latest information.
Best to have it tested by me first, and assuming they have a good chance to pass, I could arrange to have it tested against the EU rules. There are'nt any ways around this, so spending money up front is unavoidable.

You could start with sending me one stove first and we'll see whether it's clean enough for to sell it in the EU.
It's up to you.

That's a very generous offer by Peter.  I would love to see the results of the testing.

Mr Lee that looks wonderful! Well done and what a lot of work! I agree with others that the credit/attribution is very important here. So many others have spent many hours, months, years developing these ideas.

Question: Peter van den Berg, all, how is it properly done to “attribute” in Mr Lee’s case?

Best wishes to all involved 🚀

hello Peter van den Berg,

I hope this message finds you well.

I have consulted with international logistics providers and found that the cost of shipping a rocket stove from China to the Netherlands is approximately $2,000. While I would be delighted to send you my two models of rocket stoves for testing free of charge, the total logistics cost for both units amounts to around $4,000, which is unfortunately too expensive for us at the moment.

If there is anyone willing to cover the shipping costs, I would be more than happy to send the stoves to you for your testing and research purposes.

Thank you for your understanding, and I look forward to your response.

[laisen lee]

laisen lee wrote:hello Peter van den Berg,

I hope this message finds you well.

I have consulted with international logistics providers and found that the cost of shipping a rocket stove from China to the Netherlands is approximately $2,000. While I would be delighted to send you my two models of rocket stoves for testing free of charge, the total logistics cost for both units amounts to around $4,000, which is unfortunately too expensive for us at the moment.

If there is anyone willing to cover the shipping costs, I would be more than happy to send the stoves to you for your testing and research purposes.

Thank you for your understanding, and I look forward to your response.

[laisen lee]

While I understand that $4000 is expensive, you said earlier you wish to sell these in Europe and US.  If it costs that much to send a stove for testing, how will they be shipped for sale?  Is shipping to the Netherlands that much more expensive than shipping to other parts of Europe or the United States?  My understanding is that these can't be sold in Europe without the testing?  

I wanted to provide more details about the logistics of shipping the rocket stoves. The estimated shipping cost of $4,000 covers two units of rocket stoves, as they are large and heavy when packaged in wooden crates. While this makes individual shipments costly, we are exploring partnerships with logistics providers. They have indicated that shipping costs could be significantly reduced if the stoves are sold in larger quantities.

Additionally, I am actively researching the requirements for selling these stoves in the EU and the US. I am not entirely sure about the specific conditions or certifications needed, but I am making progress in understanding the relevant policies and procedures to ensure compliance in these markets.

If there are any recommendations or insights you could share regarding testing, certifications, or entering these regions, I would greatly appreciate your advice.

Trace Oswald wrote:

laisen lee wrote:hello Peter van den Berg,

I hope this message finds you well.

I have consulted with international logistics providers and found that the cost of shipping a rocket stove from China to the Netherlands is approximately $2,000. While I would be delighted to send you my two models of rocket stoves for testing free of charge, the total logistics cost for both units amounts to around $4,000, which is unfortunately too expensive for us at the moment.

If there is anyone willing to cover the shipping costs, I would be more than happy to send the stoves to you for your testing and research purposes.

Thank you for your understanding, and I look forward to your response.

[laisen lee]

While I understand that $4000 is expensive, you said earlier you wish to sell these in Europe and US.  If it costs that much to send a stove for testing, how will they be shipped for sale?  Is shipping to the Netherlands that much more expensive than shipping to other parts of Europe or the United States?  My understanding is that these can't be sold in Europe without the testing?  

I wanted to provide more details about the logistics of shipping the rocket stoves. The estimated shipping cost of $4,000 covers two units of rocket stoves, as they are large and heavy when packaged in wooden crates. While this makes individual shipments costly, we are exploring partnerships with logistics providers. They have indicated that shipping costs could be significantly reduced if the stoves are sold in larger quantities.

Additionally, I am actively researching the requirements for selling these stoves in the EU and the US. I am not entirely sure about the specific conditions or certifications needed, but I am making progress in understanding the relevant policies and procedures to ensure compliance in these markets.

If there are any recommendations or insights you could share regarding testing, certifications, or entering these regions, I would greatly appreciate your advice.

Eugene Howard wrote:If it has been mentioned, I apologize, but where are these being made and how much in US Dollars to buy one?

These stoves are manufactured in China, and we currently offer four different models. Each model varies in functionality, size, and weight to cater to different needs and preferences.  We are considering setting the price range between $500 and $1,000 per unit, excluding shipping costs and taxes. Our goal is to ensure these products remain competitive while offering excellent value to customers.  If you have any suggestions regarding the features or pricing of such products in the EU or US markets, or if there are any particular aspects you believe we should focus on, I would be grateful for your feedback.  

Your pricing sounds very reasonable indeed.
I dont know if you are using standard oil drums but you could possibly offer a kit for self assembly and the buyer would supply their own barrel.
Perhaps another option would be supplying the internal components to a third party business who could ensemble the parts with their own barrel and sell them from thier location on your behalf.
That is assuming the components without the barrel would be much cheaper to ship?