Fahrenheit electronic hand warmer. How does a catalytic heating pad work? Operating principle and operating instructions. If you decide to purchase a catalytic heating pad in our store, we will deliver it in a way convenient for you, as well as

Catalytic heating pad interesting because it can be used many, many times. With active use heating pad lasts for several years. They come in different shapes and colors, but the principle of all catalytic heating pads is the same. For those who have never used a catalytic heating pad, this article will be very useful, and those who already have one will be able to find useful ones for themselves. Tips for extending the “life” of a heating pad.

So, What is a catalytic heating pad and how does it work. This is a small device that breaks down into three parts: reservoir, cap with catalyst and lid. The heating pad generates heat during flameless oxidation of gasoline vapor in the presence of a catalyst. Gasoline vapors come from the reservoir and pass through the cap with the catalyst, where oxidation occurs on the surface of the already heated catalyst at a temperature slightly above 100 degrees, with heat transferred to the heater body.

How to refuel and what kind of gasoline to use for refueling.

When people hear about gasoline, everyone has a question: “how difficult is it to refill a heating pad?” In fact heating padcan be refilledvery easy and neat. Any gasoline is suitable for it, but it is recommended to use only peeled. First of all, it doesn't stink! Secondly, if you use regular gasoline, you will significantly shorten the “life” of your heating pad. We use the cheapest purified gasoline for the heating pad - this gasoline "Galosha". You can buy it at any hardware store and it costs about 20 UAH.
The heating pad comes with a special watering can for easy refilling. To carefully fill the catalytic heating pad, you can use a syringe, then the chances of spilling gasoline or getting your hands dirty are minimal. Gasoline syringe You can pour it into a watering can or directly into the reservoir of a heating pad, whichever is more convenient for you. But if you get gasoline on your hands, then there’s nothing terrible, it’s just wash your hands with soap.

How to calculate how many hours to fill a catalytic heating pad

If you do not need the heating pad to heat all day, but only few hours then you should refill the heating pad at the rate of 1 ml per 1 hour of operation. And add a few extra milliliters for reserve.
If you want the heating pad to work all day, then fill it completely. How can you tell if the heating pad is full? You will see cotton wool in the tank; it is needed to retain gasoline. While dripping gasoline onto the cotton wool, periodically turn the tank over. When the tank will be full, the cotton wool will no longer be able to hold gasoline and you will see how gasoline is dripping from the tank. If gasoline flows out of the tank when you turn it over, then you have filled the heating pad completely. Wait until the gasoline drains and close the heater.

If you are using a heating pad for the first time, then the catalyst must be “started”.

Before starting work absolutely new heating pad, the catalyst must be “started” For better work. To do this you need a lighter, preferably a turbo lighter. We carefully take the cap with the catalyst with pliers (if you don’t have it, you can use scissors) and heat it well on both sides over the fire. If you don't have a lighter, you can do this over the stove, but this must be done very carefully so as not to damage the catalyst. It is not recommended to do this over a fire. since you smoke the catalyst and shorten its service life.
There is no need to calcinate the catalyst before the next use., just hold the lighter over the fire for 10 seconds.

What to do next?

After the operation we put the cap with the catalyst on the tank, and put the lid on top. For better work, let's warm the tank in our hands and through a couple of minutes we already feel the warmth. Then we can put the heating pad in our pocket or mitten, put it in a case and hang it around our neck.

What is the heating temperature of the heating pad?

Hot water bottle can heat up to 60 degrees, but in this case it's worth it keep in a case, which is included. The heating temperature of the catalytic heating pad depends on the environment. If it’s severely frosty outside, then the heating pad in your pocket will warm you up to about 45 degrees. Main give the heating pad oxygen. If you put a heating pad in your mittens, take it out periodically, otherwise it will go out.
If you take a heating pad with you, Take her lighter too. If the heater goes out, you can turn it on again in less than a minute.

How to “turn off” the heating pad?

When oxygen supply stops, warmer stops working. You can close access to oxygenfor a few minutes andthe heating pad will cool down. Or you can remove the capwith a catalyst and itwill go out instantly. Only be careful, the cap is hot!

What to do if there is no longer a need to use the heating pad, but there is gasoline left in the tank?

It must always be taken into account that gasoline evaporates. If gasoline remains in the tank, then in a few days (depending on how much is left) he will evaporate. So he evaporates more slowly, put on food wrap(or construction) film on the tank where gasoline is poured. In order not to breathe in fumes (even though they are insignificant, for example, on the street the fumes from cars are much stronger), put the heating pad in a case, or even better, on the balcony.

If you decide to purchase catalytic heating pad in our store, we will deliver it in a way convenient for you, and also provide detailed advice on application! Order from us right now! Enjoy winter with us!

Evgeniy Sedov

When hands grow out the right place, life is more fun :)

Content

There are several different devices that are used for heating small spaces and personal heating. One of them is a catalytic heating pad, available on the market in a wide range. The prerequisite for the creation of this compact device was the inconvenience experienced by soldiers during the First World War in winter period. Find out everything about this device: the principle of its operation, models and prices.

What is a catalytic heating pad

This device is a chemical heating pad, the purpose of which is to individually warm a person using flameless oxidation of highly purified gasoline vapors. During the four years of World War I, inventors in England, Japan and the USA created several versions of pocket-type liquid heating pads. To start the device, the tank was filled with alcohol, which was absorbed into cotton wool, after which the device was heated with the flame of a match - as a result of this, a catalytic reaction occurred.

Today, a catalytic hand warmer for heating other parts of the body has found widespread use among amateurs. hiking trips, fishing, hunting, winter sports. It has also gained great demand in conditions associated with working on the street. In the Soviet Union, manufacturers produced a gasoline heating pad GK-1, which, when fully charged, was capable of generating heat for 8-14 hours with a temperature of up to 60 degrees.

Operating principle of a catalytic heating pad

The design of a catalytic heating pad is relatively simple, because the device consists of a body made of metal, without additional parts on the outside. In size, most models are approximately the size of the palm of an adult man. There is a reservoir inside the housing, and a catalyst is attached to the neck. The latter contains cotton wool, which is soaked in gasoline. The neck is closed with a tight lid, but there are holes in it through which air enters the catalyst.

The operating principle of the device is based on the release of heat, which is accompanied by flameless oxidation of gasoline vapor in the presence of a catalyst. Gasoline vapor passes through a special catalytic cartridge. They undergo oxidation by oxygen on the surface of an already heated catalyst, i.e. these vapors burn without flame. Oxidation products exit the device through the ventilation holes in the lid. At the same time, air containing oxygen begins to flow through them to the surface of the catalyst.

The catalyst (catalytic mesh) is a platinum part that looks like a wick - this is the most important component of the heating pad. Inside it is a steel mesh cartridge. To start the mesh in the catalytic cartridge, it must be heated for 10-15 seconds, using a flame that does not produce soot, for example, a lighter. The fuel used for the heating pad is gasoline that has gone through the highest degree of purification. The use of other types of fuel leads to rapid deterioration of the mesh - a phenomenon called “catalyst poisoning”.

How to use a catalytic heating pad

You can increase the efficiency of a device that has become clogged by calcining the mesh cartridge together with the catalyst in a muffle furnace or on a gas (non-smoking) flame. Remember that the use of individual catalytic devices in enclosed spaces is hazardous to health, because Gasoline oxidation products are very toxic. It is necessary to use a catalytic heating pad in accordance with the instructions:

Place the device on a flat surface. If the weather is cold, then warm up the device before starting - for example, you can do it for 10 minutes. place it under your clothes.
Using a special watering can/funnel (included in the kit), add the required volume of gasoline for lighters or any other option that has undergone the highest purification into the tank. Please note that the heating device cannot be refilled with motor gasoline.
Be sure to secure the watering can using a special clamp. This approach will help avoid leakage.
Remove the watering can and put the catalyst in its place.
Make sure that there is complete absence of spilled fuel on the body of the device, after which you can heat it with a match or lighter.
The catalyst will heat up to the desired temperature in approximately 5-10 seconds.

For long-term use of this pocket device, it is very important to follow certain care rules. The main thing is that before each refueling you must shake out any remaining fuel from the tank. Over time, when the surface of the device becomes dirty, warm it up for 1-2 minutes. over the flame of a gas stove - this will return the device to its previous state. This will allow the heating pad to reach its maximum temperature again.

During operation, the surface of the catalytic device can heat up to 60 degrees. This temperature is somewhat high for contact with the human body, so the set, in addition to the device, also includes a special bag - the device should be kept in it. This kind of cover is also necessary to protect the device from cooling, because Due to cold air, its operation may stop due to insufficient evaporation of fuel. Typical uses:

warm your hands by placing a heating pad in a mitten or keeping it in your pocket;
dry shoes by placing the device inside the shoe;
keep warm at night by placing the device in your sleeping bag.

Manufacturers of catalytic heating pads

The final cost of the heating device depends on the country of origin and the company. On the market there are models of domestic production, Korean, Chinese, etc. High-quality models cost from 1.5-2 thousand rubles and more. Their difference from cheap analogues lies not only in the quality of manufacture, but also in fuel consumption - they are more economical and at the same time emit less gasoline smell during operation. Well-known manufacturers of heating pads, which are widely used by fishermen, hunters and travel enthusiasts, include:

ZIPPO;
KOVEA;
Pathfinder.

ZIPPO

Heating pads from ZIPPO can produce heat for 12 hours. They are used to warm the hands and body of a person. Heat is released without combustion due to the oxidation of gasoline vapors. The mesh (catalyst) is made of fiberglass. An excellent purchase could be the Handwarmer High Polish Chrome model. The device will be useful for fishing, walking, hiking and simply in the cold season, for example, for car owners who sometimes have to carry out car repairs in the cold:

name: Zippo Handwarmer 40365 High Polish Chrome;
price: 2295 rub.;
characteristics: dimensions - 66x13x99 mm, weight - 73.7 g, manufacturer - USA, there is a lifetime warranty from the manufacturer, original gift packaging;
pros: durability, provides soft, steady heat for 12 hours;
cons: expensive.

ZIPPO heating pads are a real salvation for sellers who have to stand behind the counter in winter. Another great option from this company:

name: Zippo 40363 Pink;
price: 2090 rub.;
characteristics: dimensions - 51x15x74 mm, weight - 51, steel with a pink matte finish, keeps heat for about 6 hours, warranty - 2 years;
advantages: compact size, reliability;
disadvantages: high cost, retains heat less than analogues;

KOVEA

The Korean manufacturer of catalytic heating devices is KOVEA. This company has been one of the leaders in the market for such heating pads for several decades. The quality of its products is beyond doubt. Distinctive feature The main feature of the KOVEA heating pad is its ergonomic design. In addition, the standard set often includes a convenient bag for a heating pad. Model VKH-PW05M Pocket Warmer M is ideal for warming hands, feet and for drying boots and mittens:

name: VKH-PW05M;
price: 1740 rub.;
characteristics: weight – 100 g, full filling – 24 g, fuel consumption – 1 g/h, temperature retention time – up to 24 hours, there is a convenient soft case, a filling funnel.
pros: keeps warm for a long time, reasonable cost;
cons: none.

Another catalytic device from KOVEA is VKH-PW04S Pocket Warmer. The device can heat up to 70 degrees:

name: VKH-PW04S Pocket Warmer;
price: 1830 rub.;
characteristics: weight – 60 g, operating time – 10 hours, filling capacity – 12 ml, there is a convenient dispensing funnel for refilling;
pros: durable, comfortable;
cons: does not retain heat for long.

Pathfinder

This type of catalytic device is a Russian-made product, ideal for people who work in difficult climatic conditions, are fond of winter sports, tourists, etc. For food you need to buy highly purified gasoline. The average temperature of the operating device is 42-50 degrees - adjustment is carried out by air supply:

name: Pathfinder PF-GHP-P01;
price: 842 rub.;
characteristics: weight – 79 g, overall dimensions – 70x100x14 mm, tank volume – 30 ml, material – steel, operating time – up to 16 hours, liquid fuel consumption – 2 ml/h;
pros: affordable price, long term work;
cons: none.

Today I want to tell you about one of my very old purchases.
A catalytic heating pad I bought on ebay two years ago.
Now it's getting cool here, and I've started using this useful thing again. At the same time I decided to talk about her.
I'll start with a definition. In case someone doesn’t know exactly how catalytic heating pads work:

What is a catalytic heating pad:
This device is a chemical heating pad, the purpose of which is to individually warm a person using flameless oxidation of highly purified gasoline vapors. During the four years of World War I, inventors in England, Japan and the USA created several versions of pocket-type liquid heating pads. To start the device, the tank was filled with alcohol, which was absorbed into cotton wool, after which the device was heated with the flame of a match - as a result of this, a catalytic reaction occurred. Today, catalytic hand warmers and heating other parts of the body have found wide application among lovers of hiking, fishing, hunting, and winter sports. It has also gained great demand in conditions associated with working on the street. In the Soviet Union, manufacturers produced a gasoline heating pad GK-1, which, when fully charged, was capable of generating heat for 8-14 hours with a temperature of up to 60 degrees.
Operating principle of a catalytic heating pad:
The design of a catalytic heating pad is relatively simple, because the device consists of a body made of metal, without additional parts on the outside. In size, most models are approximately the size of the palm of an adult man. There is a reservoir inside the housing, and a catalyst is attached to the neck. The latter contains cotton wool, which is soaked in gasoline. The neck is closed with a tight lid, but there are holes in it through which air enters the catalyst.
The operating principle of the device is based on the release of heat, which is accompanied by flameless oxidation of gasoline vapor in the presence of a catalyst. Gasoline vapor passes through a special catalytic cartridge. They undergo oxidation by oxygen on the surface of an already heated catalyst, i.e. these vapors burn without flame. Oxidation products exit the device through the ventilation holes in the lid. At the same time, air containing oxygen begins to flow through them to the surface of the catalyst. The catalyst (catalytic mesh) is a platinum part that looks like a wick - this is the most important component of the heating pad. Inside it is a steel mesh cartridge. To start the mesh in the catalytic cartridge, it must be heated for 10-15 seconds, using a flame that does not produce soot, for example, a lighter. The fuel used for the heating pad is gasoline that has gone through the highest degree of purification. The use of other types of fuel leads to rapid deterioration of the mesh - a phenomenon called “catalyst poisoning”.

Ntthm after a short introduction, you can move on to the subject of the review.
I bought a heating pad on ebay. I bought according to the “cheapest offer” principle. The link where I got it is no longer there, so in the header there is a link to the most cheap option, which I found. Although they may be cheaper.
Back then, as I remember, I took two heating pads. One for myself, one for my father. Both heating pads work great and provide warmth.
When the parcel arrived, the heating pad was in the box, but it is clear that the box was not preserved after two years. Normally, the heating pad is stored in a felt bag that was included in the kit. Here he is:

The heating pad itself is a metal remnant that slips very much in your hands. For two years of wearing it in a case, the heating pad did not fade, did not get scratched, and nothing happened to it. See for yourself:

And what will happen to it if it is always in a case?
For those who are interested, I will show you the dimensions:

The body of the heating pad is made entirely of metal. I can assume that it is stainless steel, but I could be wrong. The body itself is collapsible and consists of several parts: a lid, a nozzle with a catalyst, and a tank with cotton wool. In the photo you can see that the heating pad has been used many times, so the nozzle with the catalyst has traces of carbon deposits. But this has not yet affected the heating properties of the heating pad:

If you remove the catalyst, you can see cotton wool that needs to be soaked in gasoline or other flammable liquid:

Out of curiosity, I tried to remove the cover to look at the insides, and it came off. Before this, I had never looked at what was inside. And inside there is ordinary cotton wool, laid in layers:

The photo shows the condition of the heating pad after two years of not very frequent use during the cold season.
Now I’ll tell you about how I use the heating pad.
As a flammable liquid, I use gasoline for lighters, which I buy offline for 400 tenge (about $1.1) offline:

The heating pad also included a special filling funnel:

With its help, I pour gasoline into the heating pad. I usually fill it up to the first division of the funnel. Sometimes more.
Then I put the catalyst in place and light it with regular matches:

In the description of the product and in the instructions above it is written that you need to heat the catalyst for 15-20 seconds. But in my case, it takes 2-3 matches to heat the catalyst. The catalyst does not ignite faster.
By the way, in this photo you can see that the center of the catalyst is no longer heated:

Most likely, due to the constant touching of matches in this place, it is already damaged.
After the catalyst has ignited, heating the heating pad takes several minutes. If you do not put it in the case, then literally after 2-3 minutes the heating pad in your hands feels quite hot:

But this heating pad clearly doesn’t reach the promised 60 degrees like the Soviet KT-1.
One refill of the heating pad lasts me an average of 4-7 hours. Depends on how much gas I put in.
I use this heating pad in several ways. In the fall, at work, the heating has not yet been turned on, but the rooms are already cool. I light the heating pad, put it in its case, and put it in the back pocket of my jeans. The butt is warmed up, the heat goes to the lower back, and as a result the whole body is warm.
Of course there is another option:

Heaters “Good warmth”!
Our couriers will deliver them directly to your apartment in containers of 0.5, 0.7 and
1 liter…

But it doesn’t apply to everyone at work.
I also always take this heating pad with me on winter fishing trips. No matter how good and warm clothes I stock up on, the heating pad lying in the inner pocket behind my bosom gives a pleasant warmth that warms me very nicely. Moreover, I am against using liquids for warming while fishing.
Based on the results of two years of use, I can safely say that this is a very successful purchase.
But now I’d probably be better off adding more money and buying an original Zippo heating pad. Here it is in this color:

According to reviews, the quality of these heating pads is much higher than that of Chinese ones. They contain catalysts made of real titanium alloy, which is more reliable and durable. Well, plus the appearance is more interesting.
That's all. I wish everyone warmth, in these already cool autumn days. Take care of yourself and your health. I'm planning to buy +60 Add to favorites I liked the review +92 +148

AND winter holidays, it is known how, when you are outside, you want to warm up. The pocket hand warmer works by oxidizing fuel and is a flameless heater. The flameless oxidation of gasoline or alcohol, used as fuel for pocket heating pads, saved many soldiers from hypothermia during World War II.

Taking advantage of the idea of a Japanese inventor of the last century, a new model of hand warmer was created. In our online store you can buy a gasoline hand warmer at a fairly affordable price.

When fully charged, the catalytic heating pad will heat its owner for 6-10 hours. Thanks to its compact size, you can fit it in your inner jacket pocket. It works even in conditions of high humidity.

The principle of operation of a catalytic hand warmer was known back in the 20th century. Fuel is poured into a tank filled with cotton wool, which serves as a catalyst, and closed with a lid. The catalyst then needs to be heated, for example, over a fire or lighter. Gasoline slowly evaporates, reacts with the hot catalyst, and gives off heat.

The holes in the gasoline hand warmer supply air to the catalyst located inside the device. Also, holes on the top of the body serve to remove combustion products.

By purchasing a catalytic heating pad, you are purchasing not only a useful and convenient item, but also a stylish accessory. Made of durable steel and available in silver color. It has a compact size and light weight. Manufacturers have thought through everything to the smallest detail, even the holes for the release of fumes are made in the shape of a beautiful butterfly.

Easy to clean with wet wipes or detergent. The heating pad is packed in a beautiful bag made of soft material, which allows you to retain heat even longer. The device works great with lighter fluid. The kit includes a plastic watering can that allows you to carefully pour fuel into the tank.

To mechanically stop the operation of the device, you just need to remove the tank and let it cool completely. Cooling agents cannot be used for these purposes; the tank must cool naturally.

If you are interested in winter hunting or fishing, then you simply need to buy a catalytic gasoline heating pad. Being out in the cold for hours can put you at risk of hypothermia or frostbite.

If you put a heating pad under your jacket, you won't be afraid of any cold. Manufacturers claim that it heats even at -40°C. The jacket will additionally retain the heat emitted by the accessory, and you will feel comfortable even in severe frost.

Such devices were known even under the communists and were sold in sports stores - the principle of their operation is simple and unpretentious: fuel vapors enter a “combustion chamber” filled with a catalyst, where they burn safely without flame, at a moderate temperature, and almost completely.
Today, those Soviet samples can still be found at flea markets, but the object of our attention today is a gadget that arrived from the People's Republic of China, where local Kuomintang members, it seems, also do not shy away from comfort and warmth.
The device is a metal disk with a removable cover, coated on the outside with something like nickel or chromium - I don’t understand this, but it’s made with high quality. It sparkles like a diamond! And it’s nice to hold it in your paws - such a cultural thing :)
There were reviews of almost the same heating pad here

And

But this one is a little different. Based on common sense - better than those reviewed, in the end you will understand why.
This is what the farm looks like

But here it is, disassembled into parts, plus a complete “canister” for refilling.

The canister, of course, is idiotic, and serves, first of all, for measuring fuel, but in practice, it spills over both when pouring it into it from the can, and from the measure itself when filling our heating pad.

Therefore, this thing, which looks more like a toilet than something refillable, can and should be safely thrown into the trash - why store rubbish at home... We just pour by eye. We pour as much as we want to warm up: my personal experiments, I will say, looking ahead, showed that a full refueling (this is when it is already clearly wet under the filling net and a little more - and the liquid will be visible) is enough for 16 hours of work (in summer and winter will be longer, since the fuel evaporates more slowly and is consumed correspondingly more slowly), and in order for the device to work for three hours, a couple of cubes is enough - I measured it with a syringe.
The main and main element of the heating pad is a cap in which a piece of mineral wool is fixed, “impregnated” with a catalyst - I don’t know how best to put it. Fuel vapor goes from the tank there, comes into contact with catalyst particles distributed in space and reacts with oxygen in the air. To initialize the process, this head must be heated - then the process will begin and be self-sustaining.

Well, let's take Galosh gasoline from the hardware store, fill up our miracle, put the cap in place (tightly! The vapors should not penetrate past - otherwise they won't burn and will stink), take the turbo lighter already known to everyone with a non-smoking flame (smoking - this is a terrible enemy of the catalyst. It cannot be contaminated. Soot spoils it, so burning it with a match and a candle is stupid) and let’s bring it up for a second. Everything is ready, the lid can be closed, the process has begun. Very quickly the entire head heats up and transfers heat to the body of the heating pad. About 15 minutes - and it reaches a stable temperature, which no longer rises. Let's try it on

This is at an ambient temperature of +24 degrees. In the cold, of course, it will be less.
The heating pad is equipped with a cute case on a string: you can not only carry the device in your pocket, throw it from hand to hand, but also wear it under a down jacket, either on your chest or on your back. The device is lightweight, so it doesn’t feel like a stone on your neck. I put it on under my robe - it's hot. In summer it’s clearly out of place :)

Well, okay, what else? You can refuel with either gasoline (galoshes or Zipper-like lighter cans will do) or with alcohol - it works the same way. The exhaust is still there and can be felt in the room. Not much, but you can feel it, and this is in ventilated conditions. In winter, in enclosed spaces, I think it will stink, bless you!
The instructions for the device exist in this form: a photo of the back of the box. Understand it as you wish. Fortunately, there’s nothing special to understand - pour it and drink it :)

In general, the box is not bad, and it even arrived uncrumpled, the gadget can be given as a gift.
What's the result? Good heating pad. Cons: no built-in lighter. You must either carry it with you or light it at home. (Did you remember the disclosure of “those” devices promised at the beginning? I think it was not in vain that the Chinese removed that “arsonist” - it greatly reduced the service life of the catalyst. But they haven’t had time to install another one yet) The second is better - we remember that VAPOR of fuel is needed to work. In the cold it ignites poorly and until it warms up, the catalyst deteriorates.
How to “repay”? Remove the hot cap. After this, it immediately cools down and can be attached again. But! He lets vapors pass through him, and they stink. And they will stink until everything evaporates. Therefore what? That's right, we could have guessed to include a lid for the tank in the kit: remove the heating head, close the tank with a plug - and there is no stink and the fuel is in place. It’s a small thing, but it’s not enough. You have to farm on your own.
Another disadvantage: there is no built-in flashlight :) Well, just according to tradition: the Chinese build them in everywhere, but why not here? :) And there is no knife, and no laser!
Thank you for your attention, my dears!