New life for an old refrigerator. How can you use the body of an old refrigerator.

The owners of refrigerators try to get rid of them in two cases: either the unit is obsolete and is replaced with a new one, or it is out of order and cannot be repaired. In the first case, the "old men" most often migrate to garden houses, garages, where they are still used for their intended purpose for a long time. In the second case, the problem of disposal arises. However, the first option only delays the prospect of the second. But zealous owners are trying to benefit from the "killed" refrigerator. What's more, it's easier to do so.

So, consider the most trivial ways to use the "old" unit.

Recall that the body of the refrigerator is made of high quality sheet metal. If you are a motorist, or just a tinkerer, cut off this metal. It will come in handy for bodywork and other work. From sheet metal, you can make a lot of useful things for a summer residence.

The inside of the refrigerator contains a lot of useful things. If the refrigerator is working, then its main unit - the compressor, will still serve. The pressure it develops is not large, a maximum of 1.5 atmospheres. But this is enough for the operation of a spray gun, airbrush and other small pneumatic tools. You can make a pond aerator, tire inflation compressor, etc. It can be equipped with a receiver from a car camera.

Fine-grained heatsink copper tube also will not disappear in the hands of a craftsman. There are several meters of it. Copper is perfectly soldered. Various branch pipes, water and gas connections, instantaneous water heater or heat exchanger - these are the simplest applications of the tube.

The inside of the refrigerator is an excellent blank for shelves and "cash registers" for storage small tool. Sometimes it’s enough to carefully cut it all out and fix it on the wall of a workshop or utility block.

Another easy way to use an old unit is as a cabinet. What you store in it depends on your needs. Children's toys, cosmetics, tools, wood for the fireplace, etc. The only thing you have to take care of is the design of the locker. Here your imagination will help you. Make sure that the "locker" becomes an integral part of the interior. At the same time, the insides of the refrigerator can be left as is or removed and re-equipped everything there at your discretion.

If the body of the refrigerator is placed horizontally with the door up, you get an excellent container - a chest. It can be used for garbage storage, composting, as a flower bed, a store of dry firewood, etc. Beekeepers can adapt it to store honeycomb hive frames. Inner size The refrigerator body perfectly matches the size of the frame. In addition, the problem of protecting wax from rodents and moths is immediately solved. The refrigerator closes almost hermetically due to the seal on the door.

From the door of the refrigerator and part of the body, you get an excellent door for a cellar or a well. It is necessary to cut off the front of the case with a grinder at the right distance in order to get a similarity door frame. The remains of the body serve as an anchor part, which is concreted or fixed in the wall. True, for such an application, a sufficiently high refrigerator is required, and they are all two-chamber. But it doesn’t matter - we connect both doors with an overlay and self-tapping screws and they become one, open together.

From the refrigerator - case

The body of the refrigerator has good thermal insulation, which allows it to be used as an isothermal case. Can fit gas cylinders pumping station to protect them from the cold. If you remove the insides and drill ventilation holes, then a wonderful “metal box” will come out for large gas cylinders.

The same property (good thermal insulation) will allow you to arrange a “cellar on the balcony” from the refrigerator. Even in cold weather, it will be possible to store potatoes and other vegetables there. As a heater, it will be enough to place an electric light bulb of 40-60 W placed in a tin can there.

Owners of autonomous power generators are aware of their most important drawback - a high level of noise. Place the unit in the refrigerator case. Thermal insulation will become soundproofing. Don't forget to make some holes for air supply and take out the exhaust pipe. Or cut a hole on the side and pick it up with a fine mesh.

The case of a small refrigerator can be used to install an electric or gas meter outside the home. You can install the refrigerator body on the head of a water well. In the refrigerator, you can arrange a mini-hozblok and store it there garden tools. Large - directly in the case. And for small ones - make holders on the door.

From the refrigerator - smokehouse

You will need a potbelly stove and a refrigerator case. Remove all "innards" from the refrigerator. We install the potbelly stove inside the case. The greatest difficulty is the output of the pipe. Draw a circle on the top panel of the case, with a diameter slightly smaller than the pipe. Then make a contour more holes drill with a diameter of 4-5 mm. Next, let's start the file.

In the upper part of the box, at a distance of 20 cm, we install two corners, on them - a grid shelf for smoked products. We use the shelf from the same refrigerator. 10 cm below, we install two more corners, on which we install a tray to collect fat, which will drip from the products. Next to the shelf for products, we install a bimetallic thermometer from gas stove indicator out.

Such a smokehouse has many advantages. You can heat it with anything - all the same, smoke flies out the chimney. Smoke for smoking is obtained from what lies on top of the stove and smolders. Using the oven allows you to get different smoking modes. The disadvantage is the small volume. However, for personal needs it is quite enough.

However, it is not necessary to install the oven directly into the refrigerator. If its bottom is flat (and it is most likely flat), it is enough to install the refrigerator itself on the stove - potbelly stove (also with a flat top or no top at all). Or make an oven old barrel, punching holes in it for air to enter the combustion zone and smoke to escape. Then the sawdust at the bottom of the refrigerator will smolder perfectly.

You can also install an electric heating element (“air”, for example, for an oven) in the refrigerator. It heats up to red, and this temperature is quite enough for smoldering sawdust and shavings. By the way, an electric heating element will allow you to get products not only hot, but also semi-hot and cold smoked. The sawdust smolders, but the temperature in the refrigerator remains low. The heating element can be equipped with a switch-on regulator that will automatically maintain the desired temperature.

From fridge to dryer

According to a similar scheme, you can make a dryer for fruits, berries and mushrooms. In the lower part we install a heater - either electric or the same potbelly stove. It is advisable to install a fan as well. Shelves can be made from plywood or metal mesh. In the roof of the refrigerator or in the side wall (whatever rainwater did not get inside) we make an outlet 100 x 100 mm and close it with a fine mesh so that the flies do not fly in. Such a dryer will dry a bucket of apples a day. Or any other fruit.

As you can see old refrigerator- a very valuable thing in the country economy. If you or your friends have one gathering dust on the balcony or standing idle in the country - use our advice. You will not regret!

Did you like it? Then:

Pumping water with a compressor from under the refrigerator

A little intro.

The other day I was fixing the old plumbing in the house. It was necessary to slightly bend the vertical pipe going from the ground to the house. In order to heat it to a suitable temperature, it was necessary to drain all the water from it. Since when installing the water supply system in the house, the drainage of water from the system was not provided, for this it was necessary to turn off the tap in one shaft (general), then unwind the connections in the other (mine) and thus already drain the water. I had no desire to break connections that had not been touched for a couple of decades and were reliably overgrown with rust and everything that was possible. I had to come up with Alternative option without any destruction. That's how the idea to make a small pump was born. Now directly about the design.

It took me about 10 minutes to assemble the system. It presents absolutely no difficulty. The whole construction can be easily understood by looking at the drawing.

But just to be clear, let me explain. The most important part of the system is, of course, the compressor from under the old refrigerator. I've been using it to inflate car tires for a long time. In this case, no re-equipment of the compressor itself is required (it is enough to install a standard start-up relay). On the compressor itself, as a rule, there are three tubes: one filling (it is sealed), one discharge and one suction. This is the last one that we need.

Next, we take any glass bottle(I used from under champagne), in the cork we make two holes for the tubes. You can also use any tubes, the main thing is that their diameter allows you to stick both tubes into the cork. It is desirable to seal the place where the tubes enter the cork with some kind of sealant, or at least ordinary plasticine. The bottle can be replaced by any vessel that can be hermetically sealed, but it is better to use vessels that are not amenable to deformation, otherwise, under the action of atmospheric pressure, the vessel will be flattened when air is pumped out. Next, with the help of a hose, we connect one tube to the suction outlet of the compressor, and on the other we put a long hose, the other end of which is lowered into a tank of water.

Everything, a homemade pump is ready!

One feature - the lower edge of the tube coming from the compressor, it is better to place a few centimeters above the lower edge of the tube coming from the tank. This is necessary so that the water flowing into the bottle is not accidentally sucked into the compressor by the retractor tube. This, of course, is unlikely, since the power of such a compressor is small, but still, it is better to play it safe.

The performance of such a pump is rather weak and, of course, it is not suitable for serious purposes. But for small amounts of liquid, it justifies itself, especially since the cost of it is scanty. Water pumps slowly but steadily. The main thing is not to forget to empty the tank in time so that water does not get into the compressor.

In my case, I pumped water out of the pipe in half a minute. Almost a full bottle leaked.

This system can be improved by using a more capacious vessel instead of a bottle (in this case, it will take longer to wait for the necessary vacuum until the water is pumped out). And even better, make an automatic drain of water, so as not to empty the vessel manually. But this is a completely different topic. The purpose of this article was to talk about a small pump from improvised materials in 10 minutes. And it has been achieved. Good luck to you!

Did you like it? Then:

How to make a smokehouse from an old refrigerator.

How to make a smokehouse from an old refrigerator .

The old Oka refrigerator, or some other, having honestly served for almost eleven years, ordered to live long. His body is large, solid - it's a pity to throw it away, you can give it a second life.

Carefully remove all unnecessary bells and whistles, leaving only a metal box with a door. After removing the inner chamber with thermal insulation, it turns out that the welds inside the case are smeared with some kind of brown sealant, which takes a good two hours to scrape off. On the back side, where the heat exchanger was, a decent hole is formed. It is necessary to close up with a metal plate cut from the dismantled parts.

The potbelly stove, welded from a piece of a 400-meter water pipe, and not used for its intended purpose for a long time, fit very well into the prepared refrigerator case.

With the outlet for the pipe, you have to tinker a little. First, draw a circle with a compass, with a diameter slightly smaller than the diameter of the pipe. Then drill holes around the entire perimeter of the circle with a five-bit drill. And bring to right size already semicircular file or in some other way, as you like.

About twenty centimeters from the top of the box, install two corners - holders for the grid-shelf, where the smoked products will be located. Ten centimeters lower, fix two more corners for the pallet, where the fat will drip. The shelf can be used from the same refrigerator, and the tray from the oven of the old gas two-burner stove. From the stove, take another thermometer with a bimetallic spiral plate. To measure the temperature in the immediate vicinity of the product. Drill a hole of the required size on the side wall and fix the thermometer, with the indicator facing out.

To fix the door, you can use an ordinary hook.

When the whole structure is ready, it is necessary to properly ignite the chamber to eliminate odors. To heat the stove for three hours, constantly throwing up firewood, with the door slightly open. The enamel on the refrigerator body will turn a little yellow in places, but will remain in place. different breeds wood, work out the technology so to speak.

The main advantage of the described unit, perhaps, is that for smoking it is minimal amount material to create smoke. After all, smoke is obtained only from what lies on the stove and smolders, and you can heat the stove itself with anything (it will fly out into the chimney) to maintain temperature regime.

Well, the disadvantage is that there is not enough space for placing products. However, if you smoke only meat and lard, and only for yourself, then it’s quite enough!

Everything breaks sometime. Washing machines and refrigerators are no exception. If your equipment has already definitely fallen into complete disrepair and cannot be repaired, do not rush to throw it in a landfill. There are many options for using old washing machines and refrigerators, both quite practical and decorative.

Flower pot from the drum of an old washing machine. It is quite nice and roomy, it is not afraid of moisture, it will last a long time, because metal is a very reliable material. You can paint such a flowerpot for plants in any color.

The most popular way to use an old drum from a washing machine is a brazier. You can cook on wood and coals not only kebabs, both a pot and a frying pan will conveniently stand on top. At the same time, it is very simple to make such a brazier.

This is already an improved version of the barbecue from the washing drum, on a tripod. By the way, the design is quite light, it is easy to carry around the site. As an option, it was possible to equip a stationary place for an outdoor hearth by arranging a convenient platform around the drum.

And who will say that it is ugly - reflections of the flame in the holes of shiny metal. Such a brazier does not look at all like an old and useless thing, but a relevant and practical element of a personal plot.

From a very old washing machine, or rather, its rounded metal case, you can make a smokehouse for fish and meat products.

This is how the drum of a washing machine, which a designer or a house owner with a rich imagination has worked on, can look elegant. By the way, in the empty case of such a pedestal-seat with soft pillow It is quite possible to store all sorts of little things.

And again the whole flower bed washing machine. Beautiful bright petunias smoothed out the brutality of the plain metal body of the equipment, which obviously served for many years until it turned into a flower bed.

Wardrobe in an old refrigerator. The case was painted, there are few shelves, but they are quite roomy, and in former freezer fit various little things.

Even if the refrigerator itself refused to freeze, this cannot prevent you from using it to cool drinks during an outdoor party. simple finish wooden planks looks quite attractive, and the ice under the steel hinged lid last long enough.

An incubator in an old refrigerator case. It will retain heat, especially if it is additionally insulated, you only need lamps for heating eggs and a thermometer to control the temperature. A good option for those who want to start breeding chickens.

House for puppies. It turned out a separate bed and dining room. For a larger dog as bed the case of the refrigerator would also fit, you just need to remove the shelves.

A chest for potatoes and other vegetables. If there is no cellar - a good place for storage. A refrigerator dug into the ground will heat up and cool slightly, less likely that the potatoes will germinate or, conversely, freeze.

Many people sooner or later ask themselves the question: "Where to put the old refrigerator?". There is nothing strange in this, household appliances, like everything that is not eternal, are periodically replaced with a new, more modern one. As a rule, old refrigerators are very large and heavy, sometimes it is not easy to even take them out of the apartment. How to deal with the old device, so as not to harm yourself and others.

Disposal of household appliances

According to the norms of the law, overall household appliances have certain disposal rules. Therefore, it is forbidden to simply take the refrigerator outside and leave it near the garbage dump. For such amateur performance, a considerable fine can be “soldered”. It is very important to adhere existing rules recycling.

Conscious citizens, united in HOAs, periodically order special containers for the removal of large-sized garbage to the house. Such a need for residents apartment building very relevant. Therefore, do not be too lazy to call the HOA and find out if there is such a practice of garbage collection in your home. If yes, find out the schedule on which the cars run.

In civilized settlements with a rather large population, municipal services should function, in the scope of which the issue of disposal of equipment falls.

Advice

If there is no HOA in your house, contact the housing and communal services authorities, they should tell you how to deal with the old refrigerator, without violating the law. But, as a rule, you will have to pay a lot of money for the removal of a refrigerator through the efforts of housing and communal services, save if you do not hire movers.

Important!!!

Get rid of old technology“garbage companies” can help, this service is usually paid.

Analyzing the "legitimate" ways to get rid of large-sized equipment, it is not at all strange why people are looking for other alternatives.

Store promotions

It is now a fairly common trend when large supermarkets household appliances organize campaigns “Replace old equipment with new”. Of course, everything is not quite right, it is not profitable for a store to change the old one for a new one, but when you return the old refrigerator, you can get a significant discount on the purchase of a new one. As a result, it turns out to be very profitable, so do not be lazy to sometimes pay attention to the promotions of stores on the Internet and on billboards.

ads

Scroll through local ads in newspapers, magazines, websites, there are sure to be profitable and not troublesome options for getting rid of the refrigerator. Look for the headings “Buy a refrigerator for spare parts”, “Removal of old equipment for free”, “Buy a refrigerator (pickup)”, etc. In the best scenario, you can “kill” two birds with one stone: free up useful space in the apartment and help out some money.

Advice

If the monetary benefit for you is a secondary point, which may not be, then you yourself place an ad in the newspaper with approximately the following content: “I will give the refrigerator for nothing on the terms of self-delivery.” As a rule, they react to such words very quickly, in ten minutes you will already have to answer calls.

Use with benefit

Many people are in no hurry to put up with the fact that the old refrigerator has served its purpose and try to give it new life but now in a different capacity. Such people are the owners of "golden hands", endless imagination, they have a lot of ideas in their head on how to use an old refrigerator in an unconventional way. To begin with, with your own hands or with the help of a specialist, you need to drain the freon from it, after which the refrigerator case becomes a real springboard for home craftsmen.

Few people know that from the refrigerator you can make a smokehouse for meat, as well as a dryer for vegetables and mushrooms. Some craftsmen build their cases of the refrigeration unit incubator. The refrigerator can be buried in the ground somewhere in a shady place and used as a mini-cellar.

If the old refrigerator has good thermal insulation, you can make a good country greenhouse out of it. To do this, the door is removed from the curtains, and instead they simply cover the box with transparent glass. The refrigerator cabinet in the garage often makes a great tool storage cabinet.

Conclusion:

What refrigerator old, not yet a reason to send it to the trash, the refrigerator can be used for various useful purposes, the main thing is to have a head on your shoulders and " right hands". We have already given you a few ideas. And remember, if you want to get rid of the refrigerator completely, never throw it away in the wrong place.

We have one old refrigerator, but the working one was given to a poor large family that lived nearby. Of course, it was possible to sell, but my husband and I believe that this technique will be more necessary and useful for those in need.

The second small refrigerator broke, but we fixed it. Replaced and connected one part. He is already 20 years old, and he keeps and works.

Third, well, he is generally very old. His husband took it to the garage and it contains the accessories he needs for the car.

My father made a dryer for fruits, mushrooms, berries and herbs. Pulled out the unit from below, replacing it with a fan heater. The shelves were replaced with mesh ones made of fine mesh. I installed a thermometer from an old heating boiler in the door. The temperature inside keeps 38-40 degrees. Dries up overnight. Dried apples are always light evenly.

From the refrigerator in which the internal metal enameled chamber is used, an excellent cart and even a bicycle trailer will turn out. I assembled this cart from a very old interior that has been used for over 25 years as compost bin, already all wrinkled but still quite suitable for creating a cart.

We have an old refrigerator that is not connected on the balcony, and serves as a kind of locker - some products and canned food are stored there in winter and summer. Both in summer and winter, there are no extreme temperature changes in the refrigerator, which is not bad for the safety of food.

And one friend in his country house made a smokehouse out of an old refrigerator, dug a hole, put the refrigerator case on top, smokes fish and meat there - that’s also not bad, in my opinion.

I can offer two options that have already been tried in practice:

1. Gut the old refrigerator. As a result, a lot of useful things will turn out: a) scrap metal, which needs to be distributed into two piles - black metal to black, and non-ferrous metal to non-ferrous, and hand it over for scrap according to different prices; b) a wire with a plug, which can later be used on other electrical appliances; c) glass wool, which can be used to insulate part of the ceiling; d) screws-bolts-nuts-screws, which are always useful in the household.

2. As already mentioned in previous answers, make them a refrigerator cabinet. That is, you don’t need to do anything, but simply call the refrigerator a cabinet and calm down. It should be especially noted that not a single mouse will get into this cabinet, since it is simply impossible to gnaw through metal with mouse teeth.

Of course the most the best option take this refrigerator to the dacha, if available. Or at least to the garden and you can put it in it for the winter various tools garden, so that they do not gather dust on the street.

Another option is to sell it for scrap. Or take it out to a balcony or loggia, and use it as a storage that is closed.

If your refrigerator works fine, then you can sell it at an alternative price, someone will need it and buy it.

Like a wardrobe, an old refrigerator can fit into a niche or closet in your home. You can take it to the garage and store something there, because modern garages have electricity.

A friend of mine used to have a doll house made out of an old fridge when she was a child. I remember many girls envied her because they would also like to have such a spacious Dollhouse with several floors and balconies.



Sell ​​it for scrap. I heard a lot of people do this. They even create teams that look for these very old refrigerators and sell them for scrap. They make good money from it. Anything is better than just gathering dust in garages and sheds.

If your refrigerator is broken and cannot be repaired, and it’s also a pity to throw it away, since it is dear to you in its own way, then put it on a loggia or balcony. Men can keep their tools, as some often work on the loggia. And the hostess can put cereals in it, and in winter it will serve as freezer and freely all winter you can store meat, fish, berries. It serves as a storage room for many people.

from an old refrigerator you can make not a bad cabinet for the cottage. Decorate or paint and it will not be a bad cabinet ..

You can make a big flower bed or put it on the beds. You can also make a storage room, any things. If the refrigerator works, then sell it.

It can also be used as a table. And if you decorate it and present it to the wall in the hallway, you get a long bench, and put boots, slippers, and shoes in storage inside the old refrigerator. By the way, according to this principle, you can put such a bench in the kitchen, to the window. Sat down or lay down, read a book, beauty! And inside the refrigerator you can store various cereals, pasta, various kitchen appliances.

Since refrigerator cases are made of very good sheet metal, it can be cut off and used for body work or other work, for example, in the country. If the refrigerator is still showing signs of life, then you can use its compressor as a spray gun or to inflate car tires. The inside of the refrigerator can be used to store tools. If you turn the refrigerator upside down, you can get a good chest for storing various things ...

Drying (dryer) for mushrooms, fruits, berries, herbs, herbs from an old refrigerator. How to dry.

From the author A few years ago I made myself a crop, etc., and it still serves faithfully. But its effectiveness all the time seemed to me insufficient, or rather, I wanted to make it even more effective. And then the other day I got into the hands of an old refrigerator. And I decided to make a drying cabinet out of it with forced ventilation which will make the drying and drying process very fast, efficient and safe (in terms of getting rid of flies and wasps that strive to visit processed products). They are known to be intolerant of drafts.

First of all, you should free the refrigerator case from all internal contents. We only need the body itself, usually metal. The only thing that should be left is the seal on the door.

When removing the refrigerator insulation, you should be careful, as it will most likely be glass wool. So that your hands do not itch later, you should wear tight clothes and gloves, preferably disposable polyethylene or rubber, stretched over cloth. A respirator or just a scarf tied over your mouth and nose will not be superfluous.

The inner case - the “trough” may be used somehow in the future (for example, as a trolley case), although there are a lot of holes in it. And we are left with only a metal locker.

In the niche where the refrigerator compressor used to be, we cut an ordinary exhaust fan. True, in this case it will work as an injection. Generally speaking, here I am faced with a dilemma. Formally, it is better to use an exhaust fan for drying, which will create a slight vacuum in drying chamber. The lower the pressure, the faster drying. But when installing exhaust fan the ability to use a fan heater is lost (which dramatically speeds up drying), you would have to install two of them or install a separate air heater.

So for the time being I settled on a 125 mm blower fan (capacity approx. 180 cubic meters of air per hour, 18 watts of power). Maybe later, when the "drying season" begins, I'll try to rearrange it to the hood and compare the results. I specially installed the fan not in the center, so that later I could install either a second fan, or embed a fan heater (for example, from drying an old washing machine).

I cut a hole in the top of the refrigerator polypropylene pipe and glued it on with hot glue. It can be built up by installing a pipe 2 meters high or an aluminum corrugation stretched up to 3 meters. At the top it will be possible to install a Volpert-Grigorovich exhaust deflector and then the draft (and draft) will be achieved on their own, without a fan. This option will be useful for those who have tight electricity in the country.

By the way, I painted the body of the refrigerator (as long as the can was enough) with black matte paint. Now, when the sun appears, the case heats up noticeably, and even with the fan turned on, the air temperature (in the outlet pipe) is 5-8 degrees higher than the ambient temperature (I measured electronic thermometer in the remote sensor).

So that the door of the refrigerator - drying is securely fixed, I attached a regular hook to it. The one that is usually used on doors utility rooms or gates. I bent the tip of the hook a little and made a notch on it with a needle file. Now, when closing on the hook, the drying door, as it were, is additionally attracted to the body, being sealed, and fixed in this position. (I did not fool around with different magnetic latches or latches.). By the way, this solution to the problem of closing an old (real) refrigerator can be useful if it lets air through under a worn door seal.

Dryer internals are "standard". This is a rack with sliding flat drawers. The bottom of boxes - mesh, from a small grid. Shelves for boxes I made from a narrow board. I had to make a cutout under the protruding edge of the refrigerator. For the efficiency of the drying process, the design should be made such that all air passes exclusively through the bottom. Fastening shelves - directly to the walls of the refrigerator, self-tapping screws. Having marked the wall from the outside, I drilled holes in it, through which I fixed the shelves with self-tapping screws with a head in the form of a pressure washer.

I have to say that I got a little carried away here. It was just necessary to close the recess in the door with a sheet of plywood or plastic. Those. make the door just flat so that when it closes it is flush with the front wall of the refrigerator. I decided to make curly shelves so that the boxes would almost rest against the door and the air would go through them. Volume drying cabinet at the same time, it increased by the thickness of the door, and the work - by an extra hour or two ... In addition, there were certain difficulties with opening the door - the seal was clinging to the shelves. I had to figuratively file them. But what's done is done. If anyone repeats the design, this should be taken into account.

Testing the dryer from the refrigerator completely satisfied me. A bunch of green dill withered for winter storage in less than a day. I even withered some meat (for beer). Meat (beef, boiled-smoked), cut into long strips and grated with salt and pepper, withered to a “rubber” state in just a few hours. It turned out something like biltong or sujuk. So ready for the mushroom - apple drying season!

So if you also come across a case from an old refrigerator, spend half a day and you will have a great dryer for mushrooms, apples, berries, herbs and all kinds of medicinal herbs.