BACKGROUND ART In general, the categorization of home use and commercial use is based on its appearance, but the opening and shutting door can make a different category based on the usage and purpose of using it. That is to say. the opening and shutting door of the home use refrigerator is opaque in general, so the content of it can not be seen from outside.

On the other hand, the opening and shutting door of commercial refrigerator is transparent because it needs a display effect. So up to now, there has been a problem which restricts the purpose of refrigerator use just because of the difference of an opening and shutting DISCLOSURE OF INVENTION As I described above, to solve the previous problem and inconvenience at the same time, we invented a multipurpose refrigerator which has a transparent door and an outer opaque door so that users can put it on or take it off according to the place they use it (home or store etc.). This is quite an invention with many benefits. It expands the range of usage, because only by putting on or taking off the opaque opening and shutting door (2) outside of the transparent door (1), you can convert the usage of the refrigerator (N) between home use and commercial use. When you use it as a home use, you can identify the content, whether it is there or where it is, before taking it out from the refrigerator, so you can keep the storage for much longer time.

BRIEF DESCRIPTION OF THE DRAWINGS The drawing 1 is a partial analyzed illustration of the invented refrigerator The drawing 2 is a squint drawing of some important parts of the invention.

The drawing 3 is a ground illustration drawing excerpting some important parts of the invention.

(A) of The drawing 4 is a ground cut end illustration of drawing 3, and (B) is a operational illustration of (A).

The drawing 5 is an illustration of the refrigerator with doors closed.

The drawing 6 is another illustration of the refrigerator.

(Ka) is a picture of refrigerator with transparent door closed and opaque door open.

(Na) is a squint drawing with both of the doors open.

Explanation of the codes used for important parts on the drawings N N: refrigerator N1, N2: support part Nla, N2a: rotating support axis 1 : transparent opening and shutting door 2 : opaque opening and shutting door 3 : button switch 4 : pressing part 10 : upper cover 101: packing 102, 103, 202, 212: rotation axis ball 201,211: quirk 203, 213: joint part BEST MODE FOR CARRYING OUT THE INVENTION Installing the opening and shutting door at the front of a refrigerator and making it rotating open and rotating close by the top and bottom rotating support axes (Nla, N2a), we built the opening and shutting door of the refrigerator (N) double with one transparent door (1) and one opaque door (2), and then inserted the rotating axis balls (102, 103, 202, 212) at the top and bottom of each opening and shutting doors (1, 2) into the projected rotating support axes (N1 a, N2a) at the top and bottom support parts (N1, N2) of refrigerator (N) so that the transparent opening and shutting door (1) and opaque opening and shutting door can be independently rotated, yet making the opaque door (2) outer door that can be attached or detached at the front of the transparent door (1) by the joint parts (203,213). that have quirks (201, 211) which are wide outside and narrow inside and connected to the rotating axis balls (202, 212) at the top and the bottom of the opaque opening and shutting door (2).

And there are button switches (3) and press parts (4) that can be generally used at the top cover (10) of the refrigerator. The button switch (3) will be switched off by the intervention of joint part (203) at the top of the opaque opening and shutting door (2) when the door (2) is closed, and will be back on if the intervention is removed. That is the way to control the inner light of the refrigerator (N).

Also, by attaching a packing) same as the one installed between the transparent door (1) and refrigerator at the girth between an opaque door (2) and a transparent door (l), we made the refrigerator perfectly tightly shut and more heat insulated. On the other hand, the packing (101) has rubber magnetic inside, so the opaque door (1) can be smoothly open and shut and is kept from opening by accident, On the drawing, the code 20 which has no description is the handle of each doors (1, 2) and 30 denotes a shelf which will be put into the refrigerator.

Just like described, the invention has a transparent opening and shutting door (1) and opaque opening and shutting door (2) installed two-fold.

The opaque one (2) can be attached and detached at the rotating support axes (Nla, N2a) because the rotating axis balls (202,212) at the top and the bottom of the opaque door (2) are based on the quirks (201. 21 1) on one side.

In other words, the opaque door (2) can be attached or detached at the front of the refrigerator (N), We can get a commercial refrigerator (N) which shows the storage inside when we detach the opaque door (2) at the outside of the transparent door (1) or we would have a home refrigerator (N) whose content can not be seen through from outside.

Because each doors inside or outside can be rotating open or rotating closed, if you open the outside opaque door (2) only, you can see the storage inside without exposing the refrigerator (N).

The joint part (203) at the top of the opaque door (2) will touch the top cover (10) of the refrigerator (N) and will be pressed down when the opaque door (2) is closed, which will turn off the light in the refrigerator (N). On the contrary, it will be popped up when the opaque door is being opened and will operate the button switch (3) which turn off the light.

Because the opaque door (2) will be removed when the refrigerator is used as commercial, the light might be always turned on. There is an auxiliary press part (4) at the side of button switch (3), and you can turn the light off by making the press part (4) push down the button switch (3).

We attached a packing (101) around the inside girth of the opaque door to absorb shock, double heat insulation and for the ease of opening and closing. This is the same rubber as the one installed in the refrigerator and the packing has a rubber magnetic inside which makes the opening and shutting of the door easy.

We also made grooves at the front of the opaque door, so you can express beautiful pictures on it.

You can selectively put in or take out shelves inside of the transparent door (1) when you use it at home, because inside of the transparent door (1), there are hooking grooves at each sides. It is a general structure for the refrigerator, so we will omit the detail for it.

The refrigerator in our description includes general refrigerators with a cold storage and a freezer, or cooling only or freezing only devices as well.