JPH0587443A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent fire from spreading to the outside of an electric parts-placing part when the fire occurs owing to the failure of electric parts, by a method wherein a steel plate-made box body is provided so as to close cut-out parts which are made open at the rearward of the top surface of an outside box, and after the electric parts are placed in the box body, the opening part of the box body is closed with a steel-made closing plate. CONSTITUTION:Cut-out parts 2a, 3a are made respectively open at the rearward of the top surface of a steel plate-made outside box 2 forming the contour of a refrigerator and at the upper part of a steel-made rear plate 3 at the rear surface of the outside box 2, and a steel plate-made box body 4, of which the top and rear parts are made open, is provided so that these cut-out parts 2a, 3a can be made close. In a space part among these outside box 2, inside box 5 and box body 4, a heat-insulating material 6 is filled and is allowed to foam. After electric parts 7 such as a control substrate are amounted with machine screws, at the electric parts-placing part 4a in the box body 4, the opening part of the box body 4 is closed with a steel-made closing plate 8. In this way, when heat is radiated from the electric parts 7 by turning on electricity, the heat is effectively radiated through the closing plate 8 having a wide surface area, and by any chance, if fire occurs at the electric parts 7, the fire can be prevented from spreading to the outside of the box body 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for storing electric parts of a refrigerator.

[0002]

2. Description of the Related Art FIG. 19 is a sectional view showing a conventional refrigerator disclosed in, for example, Japanese Utility Model Publication No. 1-20630, in which 1 is a refrigerator main body, 2 is an outer casing made of a steel plate which forms the outer shell of the refrigerator, and 3 Is a rear plate made of a steel plate located at a predetermined distance from the top surface of the outer box 2 and 4 is a connection between the top surface of the outer box 2 and the rear plate 3 to form an electric component storage portion 4a opened rearward. However, the bottom surface of the box body is made of synthetic resin and is inclined downward. Reference numeral 5 is an inner box made of synthetic resin, 6 is an outer box 2, an inner box 5, a heat insulating material such as polyurethane foam filled and foamed between the boxes 4, and 7 is an electric power such as a control board housed in the box 4. The component 8 is a closing plate that closes the opening of the box body 4.

Next, the operation will be described. The heat insulating material 6 such as polyurethane foam is intended to obtain the strength of the box body by integrally connecting the box body parts such as the outer box 2, the box body 4 and the inner box 5 in addition to the heat insulation of the box body. Even in the above refrigerator,
Since the heat insulating material 6 is filled between the ceiling of the box body 4 and the ceiling of the outer box 2, a necessary strength can be obtained in the electric component storage portion 4a. Therefore, a load due to stacking of products and luggage during transportation in a packed state of a refrigerator. The refrigerator will not be damaged even if there is a step on the packaging during the cargo handling work. Further, the exhaust heat of the electric component is radiated to the outside of the refrigerator from the electric component housing portion 4a through the closing plate 8. Further, the bottom of the box body 4 is inclined downward so as to insulate the box body 4 from the inside thereof when it is filled with blisters or is injected to improve drainage.

[0004]

Since the conventional refrigerator is constructed as described above, the electric component storage section 4 of the box body 4 is formed.
Since the heat insulating material 6 is filled between the a and the outer case 2, the exhaust heat of the electric component 7 is determined by the surface area of the closing plate 8, and the limit of the exhaust heat capacity is small in the conventional structure, and the electric component with large self-heating is generated. Could not be stored, which limited the choice of electrical components.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a refrigerator in which electric parts having a large amount of self-heating can be stored and which can be selected without restriction of the electric parts. ..

[0006]

A refrigerator according to the present invention is a refrigerator in which electric parts are housed in an outer shell of a main body,
An outer box made of steel plate having a notch opening to the rear of the top surface,
A box body made of a steel plate having an open top / rear surface for closing the cutout portion, and a steel plate closing plate for closing the open portion of the box body, wherein the electrical component is closed with the box body. It is stored in a space formed by a plate.

[0007]

In the refrigerator according to the present invention, it is possible to use electric parts which generate a large amount of self-heating, the range of selection of electric parts is expanded, and more suitable electric parts can be used. Further, since the electric parts are covered with a steel plate box / closure plate, even in the unlikely event of a fire due to a failure of the electric parts, there is also an effect of preventing the spread of fire outside the electric parts storage portion.

[0008]

【Example】

Example 1. A first embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 is a refrigerator main body, 2 is an outer box forming the outline of the refrigerator, 3 is a rear plate made of a steel plate on the back of the outer box 2, 2a is a cutout portion opened to the top surface of the outer box 2, and 3a is an upper part of the rear plate 3. Notches 4 are box-like boxes formed by closing the notches 2a and 3a and formed of a steel plate and having open top and rear surfaces, 5 is an inner box made of synthetic resin, 6 is an outer box 2 and an inner box 5 , A heat insulating material filled and foamed between the boxes 4, 7 is a boss 4b of the electrical component storage 4a of the box 4.
An electric component such as a control board attached by means of a screw 10 is a closing plate 8 for forming a steel plate to close the opening of the box body 4, and 9 is a screw for fixing the closing plate to the outer box 2 and the rear plate 3.

Next, the operation will be described. Since the electric components 7 stored in the electric component storage portion 4a are energized and generate heat during operation of the refrigerator, it is necessary to efficiently discharge this heat to the outside of the refrigerator. In the first embodiment, the electric component housing portion 4a has an open upper surface and a rear surface, and the open portion is closed by the closing plate 8 made of a steel plate, so that the heat conduction is good, and the closing plate 8 has a large surface area, so that the exhaust heat is removed. Can be done efficiently. Further, the closing plate 8 is formed of a steel plate having a sufficient strength to withstand external pressure such as trampling of cargo during packing.

Embodiment 2. Embodiment 2 of the present invention will be described below with reference to FIG.
8 will be described. 1 is a refrigerator main body, 2 is an outer box forming an outer shell of the refrigerator, 3 is a rear plate made of a steel plate on the back of the outer box 2,
Reference numeral 2a denotes a cutout portion opened to the top surface of the outer case 2, 3a denotes a cutout portion at an upper portion of the rear plate 3, and 4 denotes a notch 2a, 3a formed by closing the cutouts 2a and 3a to form a box-like shape with the top and rear surfaces open. Box 5, 5 is an inner box made of synthetic resin, 6 is a heat insulating material filled and foamed between the outer box 2, the inner box 5 and the box 4, 7 is a screw on the boss 4b of the electrical component storage portion 4a of the box 4. An electric component such as a control board mounted by 10 is a closing plate for forming a steel plate to close the open portion of the box body 4, 8a is a reinforcing bead on the top surface of the closing plate 8, and 11 is a space between the closing plate and the closing plate. A decorative cover made of synthetic resin covering from above, 11a is a plurality of ventilation holes opened in the decorative cover, 9 is a decorative cover 11, and screws for fixing the closing plate 8 to the outer case 2 and the rear plate 3. ..

Next, the operation will be described. The electric component 7 stored in the electric component storage portion 4a is self-heated by being energized when the refrigerator is in operation, so it is necessary to efficiently discharge this heat to the outside of the refrigerator. According to the second embodiment, the electric component housing portion 4a has an open top and a rear surface, and the open portion has a space between the closing plate 8 made of a steel plate excellent in heat transfer and the closing plate. Decorative cover 11 located and having a plurality of ventilation holes 11a
Since it is blocked by, heat can be efficiently discharged to the outside of the refrigerator. Further, since the closing plate 8 is formed of a steel plate, it is necessary to apply a coating in order to directly use it as an exterior part of a refrigerator, but the coating cost is very expensive. In order to obtain the strength of the closing plate 8, the closing plate 8 is provided with a plurality of reinforcing beads 8.
Although there is a problem in that it is provided with a and is inferior in designability, in this Example 2, the decorative cover 1 formed of a synthetic resin is used.
Since 1 covers the closing plate 8 from the upper surface, there is no need to paint the closing plate 8, which is inexpensive and excellent in design.

Embodiment 3. Embodiment 3 of the present invention will be described below with reference to FIG.
11 will be described. Reference numeral 1 is a refrigerator main body, 2 is an outer box forming the outline of the refrigerator, 3 is a steel plate rear plate on the back of the outer box 2, 2a is an outer box cutout portion opened to the top surface of the outer box 2, and 3a is a rear plate 3 Upper rear plate notch portions 4 are boxes formed by closing the notches 2a and 3a and formed of a steel plate and having a top surface and a rear surface opened, and the bottom surface is inclined downward. 4b is a locking hole formed in the box 4, 5 is an inner box made of synthetic resin, 6 is an outer box 2, an inner box 5, a heat insulating material filled and foamed between the boxes 4, and 12 is an electricity of the box 4. An insulating box made of synthetic resin stored in the component storage 4a,
The box body 4 and the electric component 7 such as a control board are insulated. An L-shaped locking claw 12a extending to the back side is locked and fixed in a locking hole 4b formed in the box body 4. Reference numeral 12b is a support portion formed on the inner wall surface of the insulating box 12 and supports the electric component 7. Reference numeral 12c is a plurality of ventilation holes formed on the wall surface of the insulating box 12, 8 is a steel plate-like inverted L-shaped closing plate that closes the opening of the box body 4, and 9 is the closing plate 8 and the outer box 2 and the rear plate. Three
It is a screw to fix to. Reference numeral 13 is an insulating sheet that insulates the closing plate 8 from the electric component 7.

Next, the operation will be described. The electric component 7 housed in the insulating box 12 fixed to the electric component housing portion 4a is energized and generates heat during operation of the refrigerator. The heat is radiated from the closing plate 8 through the ventilation box 12c and the electric component housing portion 4a. In the third embodiment, the electric component housing portion 4a has an open upper surface and a rear surface, and since the open portion is closed by the closing plate 8 made of a steel plate, the surface area of the closing plate 8 is large and heat can be efficiently discharged. Further, since the closing plate 8 is formed of a steel plate having sufficient strength to withstand external pressure such as trampling of cargo during packing, it is not necessary to fill the upper part of the electric component housing portion 4 with a heat insulating material. Also, the bottom of the box body 4 is inclined downward in order to improve the drainage property, but even if the closing plate 8 is removed during service such as replacement of the control board, the locking claws 12c of the insulating box 12 are Since it is locked in the locking hole 4b of the body 4, the insulating box does not slide down on the back side.

Example 4. A fourth embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 is a refrigerator main body, and 2 is a steel plate outer box that forms the outer wall of the refrigerator, and has a notch portion 2a that is open to the rear of the top surface. 14 is located above the rear plate 3, and the notch 2a is joined by the recess 14b, and the rear guide plate 14 when the rear plate 3 is mounted on the lower portion so as to project downward is attached.
Rear plate 3 made of synthetic resin with c
Similarly, it has a shape having a space inclined to both side surfaces of the outer box 2. Reference numeral 21 denotes a steel plate whose outer peripheral flange 21a is in contact with the cutout portion 2a of the outer box 2 and a part of the bottom surface of which is superposed and fixed to the recess 4b of the rear attachment 4 so as to close the cutout portion 2a and whose rear surface is open. It is a box-shaped storage box,
Reference numeral 21b is a boss for attaching and fixing the electric component 7 with the screw 12. 8 is an outer peripheral flange 21a of the storage box 21
A closed L-shaped closing plate made of a steel plate, which forms an electric component storage portion 21c between the closing box 8 and the storage box 21, and 9 fixes the closing plate 8 to the outer box 2, the storage box 21 and the rear attachment 14. Screw. Others are the same as the conventional refrigerator.

Next, the operation will be described. The storage box 11 made of steel plate is in contact with the cutout portion 2a of the outer box 2 at its outer peripheral flange 21a, and quickly transfers the heat of the box-shaped portion of the storage box 21 forming the electrical component storage portion 21c to the outer peripheral flange 21a. 21
Heat is transferred and radiated from a to the outer box 2. Also, the electrical component storage unit 2
The closing plate 8 made of a steel plate that covers the upper surface of the 1c has an inverted L shape and has a large area, and also radiates internal heat efficiently. Further, since the closing plate 8 is made of a steel plate, it is easy to have sufficient strength against the weight during transportation in the packed state and the stepping on by the cargo worker. Further, since the rear plate 3 and the rear surface attachment 14 are formed in a substantially U shape inclined to both side surfaces of the outer box 2 like the conventional refrigerator, the heat radiation passage from the machine room at the lower rear portion of the refrigerator 1 is secured vertically. It

Embodiment 5. Further, since the closing plate 8 has a sufficient plate thickness so as to withstand the load during transportation and the stepping by the cargo worker, the closing plate 8 becomes heavier than conventional parts. Therefore, when fastening the screw, it is safe to provide the convex portion 14d on the rear surface attachment 14 as shown in FIG. 15 so as to hold and position the closing plate 8 so as not to drop and to lock the closing plate 8 with the closing plate 8.

Embodiment 6. Embodiment 6 of the present invention will be described below with reference to FIGS. Reference numeral 1 is a refrigerator main body, and 2 is a steel plate outer box that forms the outer wall of the refrigerator, and has a notch portion 2a that is open to the rear of the top surface. 14 is located above the steel plate 3, the notch 2a is joined by a recess 14b, and the rear guide plate 14 is attached when the rear plate 3 protruding downward is installed.
Rear plate 3 made of synthetic resin with c
Similarly, it has a shape having a space inclined to both side surfaces of the outer box 2. Reference numeral 21 denotes a steel plate whose outer peripheral flange 21a is in contact with the cutout portion 2a of the outer box 2 and a part of the bottom surface of which is superposed and fixed to the recess 4b of the rear attachment 4 to close the cutout portion 2a and whose rear surface is open. It is a box-shaped storage box,
21b is a locking hole. Reference numeral 8 denotes an inverted L-shaped closing plate made of a steel plate that abuts on the outer peripheral flange 21a of the storage box 21 and forms an electric component storage portion with the storage box 21, and 9 indicates the closing plate 8 as the outer box 2, the storage box 21. And a screw for fixing to the rear attachment 14. Others are the same as the conventional refrigerator.
5 is an inner box, 6 is a heat insulating material, 7 is an electric component such as a control board, 8
a is a reinforcing bead formed on the top surface of the closing plate 8 and 12 is an insulating box made of synthetic resin housed in the housing box 21 and fixed by locking the locking claw 10a on the lower surface in the locking hole 21b. The electric component 7 is locked and supported by the supporting portion 10b formed on the periphery. 12 c is a vent hole, 13 is an insulating sheet for insulating the closing plate 8 and electric parts, and 11 is a decorative cover made of synthetic resin which has a space between the closing plate 8 and covers from above.
The ventilation hole 11a is opened.

Next, the operation will be described. The storage box 21 made of steel plate is in contact with the cutout portion 2a of the outer box 2 at its outer peripheral flange 21a, and quickly transfers the heat of the box-shaped portion of the storage box 21 forming the electrical component storage portion 21c to the outer peripheral flange 21a. 21
Electric heat and heat are radiated from a to the outer box 2. Further, the closing plate 8 made of a steel plate that covers the upper surface of the electric component housing portion has an inverted L shape and has a large area, and also radiates internal heat efficiently. Further, since the closing plate 8 is made of a steel plate, it is easy to have sufficient strength against the weight during transportation in the packed state and the stepping on by the cargo worker. Further, since the rear plate 3 and the rear surface attachment 14 are formed in a substantially U shape inclined to both side surfaces of the outer box 2 as in the conventional refrigerator, a heat dissipation passage from a machine room (not shown) at the lower rear surface of the refrigerator 1 is formed. Is secured up and down.

When the electric component 7 stored in the fixed insulating box 12 in the electric component storage portion 21c is operated, the electric component 7 is energized to generate heat. Heat insulation box 1
2 through the ventilation port 12c, the electric component storage portion, and the closing plate 8
Radiated from. Further, the bottom of the box 21 is inclined downward in order to improve the drainage property, but even if the closing plate 8 is removed at the time of service such as replacement of the control board, the insulating box 12 is removed.
Since the locking claw of is locked in the locking hole 21b of the box 21, the insulating box does not slide down to the back side.

Although the closing plate 8 is covered with the decorative cover 11, the heat of the electric component 7 is efficiently discharged to the outside of the refrigerator through the plurality of ventilation holes 11a. Further, since the closing plate 8 is formed of a steel plate, it is necessary to apply a coating in order to directly use it as an exterior component of a refrigerator, but the coating cost is very high. Further, in order to obtain the strength of the closing plate 8 that is relatively thin and inexpensive, the closing plate 8 is provided with a plurality of reinforcing beads 8.
Although there is a problem that it is provided with a and is inferior in designability, the decorative cover 1 molded from synthetic resin as shown in this embodiment
Since the cover plate 1 covers the closing plate 8 from the upper surface, the closing plate 8 does not need to be coated, and it is inexpensive and excellent in design.

[0021]

As described above, according to the present invention, in a refrigerator in which electric parts are housed in the outer shell of the main body, a steel plate outer box having a notch opening to the rear of the top surface, and the notch. A box body made of a steel plate having an open top / rear surface that closes the box, and a block plate made of a steel plate that closes the open part of the box body, and the electric component is formed by the box body and the block plate. Since it is housed in a space that accommodates electricity, it is possible to use electrical parts that generate large amounts of self-heating, expand the range of selection of electrical parts, and use more qualified electrical parts. Further, since the electric parts are covered with a steel plate box / closure plate, even if a fire occurs due to a failure of the electric parts, there is an effect of preventing the fire from spreading outside the electric part storage portion.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the refrigerator according to the first embodiment of the present invention.

FIG. 3 is an exploded view showing a configuration of an outer box / rear plate / box of the refrigerator according to the first embodiment of the present invention.

FIG. 4 is an exploded view showing the configuration of the closing plate / electrical component according to the first embodiment of the present invention.

FIG. 5 is a vertical sectional view of a refrigerator according to a second embodiment of the present invention.

FIG. 6 is an enlarged view of a main part of a refrigerator according to a second embodiment of the present invention.

FIG. 7 is an exploded view showing a configuration of an outer box / rear plate / box of a refrigerator according to a second embodiment of the present invention.

FIG. 8 is an exploded view showing a configuration of a closing plate / electrical component according to a second embodiment of the present invention.

FIG. 9 is an enlarged sectional view of essential parts of a refrigerator according to a third embodiment of the present invention.

FIG. 10 is an exploded view showing a configuration of an outer box / rear plate / box of a refrigerator according to a third embodiment of the present invention.

FIG. 11 is an exploded view showing a configuration of a closing plate / electrical component according to Embodiment 3 of the present invention.

FIG. 12 is an exploded perspective view of a refrigerator according to a fourth embodiment of the present invention.

FIG. 13 is an exploded perspective view showing a configuration of an outer box, a rear plate, a rear attachment, and a storage box of a refrigerator according to a fourth embodiment of the present invention.

FIG. 14 is a vertical cross-sectional view of an electric component storage portion of a refrigerator according to a fourth embodiment of the present invention.

FIG. 15 is a vertical cross-sectional view of an electric component storage portion of a refrigerator according to a fifth embodiment of the present invention.

FIG. 16 is an exploded perspective view of a refrigerator according to a sixth embodiment of the present invention.

FIG. 17 is a vertical sectional view of an electric component storage portion of a refrigerator according to a sixth embodiment of the present invention.

FIG. 18 is an exploded perspective view showing a configuration of an outer box, a rear plate, a rear attachment, and a storage box of a refrigerator according to a sixth embodiment of the present invention.

FIG. 19 is a vertical cross-sectional view of an electric component storage portion of a conventional refrigerator.

[Explanation of reference numerals] 1 refrigerator main body 2 outer box 3 rear plate 4 box body 7 electrical parts 8 closing plate

Claims (1)

[Claims] 1. A refrigerator in which electric parts are housed in an outer casing of a main body, the outer box being made of a steel plate having a notch opening to the rear of the top surface, and the top and rear surfaces for closing the notch being opened. A steel-made box body and a steel-plate closing plate that closes the open portion of the box body, wherein the electrical component is housed in a space formed by the box body and the closing plate. refrigerator.