JPH0484091A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent water droplets adhered to an outlet pipe of a cooling device from flowing into an inner box during defrosting operation and further to prevent rusts from occurring at an outer box or a thermal insulating effect from being damaged by a method wherein a midway part of an outlet pipe within the inner box is bent downwardly to form a bent part. CONSTITUTION:A midway part (a midway part reaching to a pipe outlet port 55 of an inner box) in an outlet pipe 51 within a cooling chamber 3 is formed with a bent part 56 bent downwardly. Since the bent part 56 bent downwardly in the cooling chamber 3 is formed, water droplets adhered to the surface of the outlet pipe 51 of the cooling device can be collected at a predetermined position in an inner box and dripped when the cooling device 34 is defrosted. Water droplets adhered to the outlet pipe 51 of the cooling device is positively prevented from being flowed out of the inner box 6 through the pipe outlet 55 and then occurrence of rust at the outer box 5 or a reduction in a thermal insulating effect can be prevented. In addition, since the water droplets are always dropped at the predetermined positions, then arrangement of the dew receiving pan 35 at the predetermined positions enables the water droplets to be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a refrigerator having a cooler disposed at the back inside a heat insulating box.

(B) Conventional technology Conventionally, this type of refrigerator has been constructed with an insulating box consisting of an inner box, an outer box, and a heat insulating material filled between these boxes, as shown in Japanese Patent Application Laid-Open No. 60-33224. A cooler is placed upright at the back of the cooling chamber inside the body, and the outlet pipe of the cooler is extended approximately horizontally within the inner box, led out of the inner box, and passed through the insulation material to the machine room at the bottom of the refrigerator. I ran it until.

(8) Problems to be Solved by the Invention However, according to the above configuration, the outlet pipe of the cooler extends approximately horizontally within the inner box. If it is tilted, when the cooler is defrosted, water droplets adhering to the surface of the outlet pipe will flow down the pipe to the outside of the inner box, penetrate into the insulation material, cause rust on the outer box, and impair the insulation effect. There was a problem.

The present invention was developed in view of the above, and prevents water droplets that adhere to the outlet pipe of the cooler during defrosting from flowing outside the inner box, thereby preventing rust from forming on the outer box and loss of insulation effect. The purpose is to stop

(d) Means for Solving the Problems The present invention provides a cooler disposed at the back of an insulating box body consisting of an inner box, an outer box, and a heat insulating material filled between the two boxes.
In the case where the outlet pipe of this cooler extends to the outside of the inner box, a bent part is formed by bending the outlet pipe halfway inside the inner box downward.

(*) Effect With the above configuration, the present invention can always collect and drip water droplets adhering to the outlet pipe of the cooler at a predetermined position in the inner box during defrosting of the cooler. It is possible to reliably prevent water droplets adhering to the inner box from flowing out of the inner box, thereby preventing the outer box from rusting and the insulation effect from decreasing. Furthermore, since water droplets are always dropped at a predetermined position, a secondary effect can be expected in that the problem of water droplet disposal can be solved by providing a dew catcher here.

(f) Example Embodiments of the present invention will be described below based on the drawings.

1 is a refrigerator equipped with a freezing chamber 2 and a cooling chamber.

Reference numeral 4 denotes a heat insulating box body which opens at the front by filling the space between an outer box 5 made of a steel plate and an inner box 6 made of synthetic resin with a foamable heat insulating material 7 such as polyurethane using an on-site foaming method. It is. A partition wall 9 containing a molded heat insulating material such as styrofoam is attached to the inner box 6 of the heat insulating box 4, and the inside of the heat insulating box 4 is divided into upper and lower parts, with the freezer compartment 2 in the upper part and the freezer compartment 2 in the lower part. A refrigerator compartment 10 is configured.

The lower part of the refrigerator compartment 10 is further partitioned into two parts by a partition plate 12 and a partition plate 14, in which containers 15 and 16 with upward openings are placed, respectively, and the inside is used as an ice room 17 and a vegetable room 18, respectively. There is. Freezer compartment 2, refrigerator compartment 1
The front opening of 0 is openable and closed by a door 20.21 rotatably supported on the insulating box body 4 on the negative side, and the front opening of the ice room 17 and the vegetable compartment 18 are opened and closed by a door 20. At the same time, the book is closed by a door 22, 23 which can be freely pulled out.

In the freezer compartment 2 and the refrigerator compartment 10, a plurality of disc-shaped shelves 24 made of transparent synthetic resin are rotatably provided. Further, disc-shaped shelves (not shown) are rotatably provided on the upper surfaces of the partition wall 9 and the partition plate 12, respectively.

By rotating these shelves 24, items placed at the back can be moved to the front and easily taken out.

Next, the structure around the freezer compartment 2 will be explained with reference to FIGS. 2 and 3. The rear part of the freezer compartment 2 is divided by a semi-circular back plate 28 that follows the arc of the shelf 24, and the shelf 24 of the freezer compartment 2 is a transparent container that is detachably supported on the front surface of the inner box 6 and the back plate 28. It is attached on a synthetic resin holding plate 29, and is rotatable by a rotating shaft and an outer roller (not shown).

On the other hand, a molded heat insulating material 32 and a partition plate 33 are provided behind the back plate 28.
As a result, a cooling chamber 3 is constructed, and a cooler 34 included in the refrigeration cycle is housed and installed within this cooling chamber 3. This cooler 34 is a so-called cross fin tube type heat exchanger in which a plurality of metal fins are attached to a refrigerant pipe.
It is provided vertically along the back surface of the inner box 6, and as shown in FIG.
It is installed with an inclination of 5° to 30" to the left. Due to this inclination, the defrosting water flows downward along the fins during defrosting, and drips from the lower end. I can do it.

A dew tray 35 is provided below the cooler 34 to receive this defrosting water. The upper surface of this dew pan 35 is inclined toward the drain port 36 at the right end, and the cooler 34 is installed along this slope. 34 and the dew pan 35 can be reduced.

A blower 37 consisting of a propeller fan is attached to three corners of the cooling chamber on the cold air discharge side 3A of the cooler 34.

Here, since the back plate 28 has a semicircular arc shape, an ineffective space is created at the corners of both sides of the cooling chamber 30, but this ineffective space is utilized to discharge cold air extending in the vertical direction by the molded heat insulating material 32. A duct 40 and a cold air return duct 41 are configured. This cold air discharge duct 40 communicates with the blower 37, and has cold air discharge ports 42 formed in the back plate 28 corresponding to the left corners of each space partitioned by the shelf 24.
It is open to the inside of the freezer compartment 2. Similarly, the cold air return duct 41 is opened into the freezer compartment 2 through cold air suction ports 43 formed at the right corner of the back plate 28 corresponding to each space, and is connected to the cooler 34. It communicates with the middle of the cold air suction side 3B.

The cold air completely cooled by the cooler 34 is sucked into the cold air discharge side 3A on the left side by the blower 37, and then is sent to the cold air discharge duct 40 in the front. The cold air that has flowed into the cold air discharge duct 40 is discharged into the space above each shelf 24 from each cold air discharge port 42 . At this time, the cold air is blown diagonally forward from the cold air outlet 42, flows through the space above the shelf 24 as shown by the arrow in FIG.
3... into the cold air return duct 41 and the cooler 34
It returns to the middle of the cold air suction side 3B. Furthermore, since the cooler 34 is tilted but laid flat, the cold air flowing in from the cold air suction port 43 flows from the cold air suction side 3B to the cold air discharge side 3A.
It is possible to realize a cold air circulation path with a simple configuration and low ventilation resistance.

Further, in the cooling chamber 3, an accumulator 50 connected to the cooler 34, a refrigerant outlet pipe 51, a refrigerant inlet pipe 52, a capillary tube 53, and a defrosting heater 54 are installed. Then, in the middle of the outlet pipe 51 in the cooling chamber 3 (pipe outlet part 5 of the inner box 6
5), there is a bent part 56 that is bent downward.
is formed.

In the refrigerator configured in this manner, a bent portion 56 that is bent downward in the cooling chamber 3 is formed in the middle of the outlet pipe 51 of the cooler 3, so that when the cooler 3 is defrosted, , the water droplets adhering to the surface of the outlet pipe 51 of the cooler can always be collected and dripped at a predetermined position in the inner box 6, and the water droplets adhering to the outlet pipe 51 of the cooler can be collected at a predetermined position in the inner box 6.
It is possible to reliably prevent the outer box 5 from flowing into the outside of the inner box 6 through the outer box 5, thereby preventing the outer box 5 from rusting and reducing the heat insulation effect. Also,
Since water drops are always dripped at a predetermined position, there is a dew pan 3.
5, the problem of water droplet treatment can also be solved.

(G) Effects of the Invention As described above, according to the present invention, when defrosting the cooler, water droplets adhering to the outlet pipe of the cooler can be always dropped at a predetermined position in the cooling chamber, and the water droplets can be removed from the outlet pipe. It reliably prevents the water from flowing into the insulation material, preventing the outer box from rusting and reducing the insulation effect. Not only that, but water droplets always fall in a designated position, so when installing a dew pan, etc.
The degree of freedom in design increases.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view of the refrigerator showing the cooling chamber, and FIG. 3 is a cross-sectional view of the freezer compartment. 1...Refrigerator, 2...Freezing room, 3...Cooling room, 4...Insulating box body, 5...Outer box, 6...
Inner box, 34...Cooler, 51...Outlet pipe, 56...Bend portion.

Claims (1)

[Claims] (1) A cooler is installed at the back of the insulating box, which is composed of an inner box, an outer box, and a heat insulating material filled between these boxes, and the outlet pipe of this cooler is extended to the outside of the inner box. 2, wherein the outlet pipe in the inner box is bent downward in the middle to form a bent part.