JPS6022308Y2 - refrigerator defrost device - Google Patents

Description

[Detailed description of the invention] This invention has two upper and lower compartments, each having a cooler and a defrosting heater inside the partition wall, and cold air inlets for the freezer compartment and the refrigerator compartment in the front part of the partition wall. The present invention relates to a device for smoothly defrosting frost generated inside a partition wall in a type refrigerator-freezer.

In general, in a refrigerator-freezer that has the above-mentioned configuration in which cold air intake ports for the upper and lower compartments are provided at the front of the partition wall, the front part of the partition wall is where the cold air from the freezer compartment and the relatively humid cold air from the refrigerator compartment merge. Frost was likely to form on the inside.

Conventionally, the only way to defrost this frost was to rely on excess hot air from the defrosting heater of the cooler.

However, as the energy situation has worsened in recent years and refrigerators have become more energy-saving, modern refrigerators are trying to suppress excess heat generated inside the refrigerator as much as possible.

For this reason, a problem has arisen in that the frost generated on the inside of the front part of the partition cannot be sufficiently defrosted.

The present invention attempts to solve the problems of these conventional examples with a relatively simple device.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Figure 1 shows a cross section of the front part of the partition wall in the refrigerator;
A partition wall 1 divides the inside of the refrigerator into two compartments: an upper freezing compartment A1 and a lower refrigerating compartment B.

This inner partition wall 1 is roughly partitioned by a bottom heat insulating wall 2, a front heat insulating partition 3, and a top heat insulating cover 4 to form an internal space.

5 is a bottom plate of the freezer compartment, 6 is a ceiling plate of the refrigerator compartment, 7 is a defrosting water tray, and 8 is a protection plate for the heat insulating cover 4.

The cooler 9 is installed in the space of the partition wall 1 defined by the above structure.

10 is a fin of the cooler 9, 11 is a pipe of the cooler 9, and 12 is a defrosting pipe heater disposed on the upper and lower surfaces of the cooler 9 and caulked.

15 is a suction port on the side of the freezer compartment, and 16 is a suction port on the side of the refrigerator compartment.

On the other hand, FIG. 2 shows a top view of the cooler 9, in which the front row 13 of the defrosting heaters 12 protrudes forward into a space away from the end surface of the fin 10. A clamper 14 made of a thermally conductive material that grips the cooler pipe 11 is installed in the center.

Therefore, the cold air flowing in from the freezer compartment side suction port 15 and the refrigerator compartment side suction port 16 join together near the slope 17 of the heat insulating partition 3, and frost is generated on the slope 17.

However, in the present invention, as described above, the defrosting pipe heater 1
Since the portion 13 of the cooling device 2 is projected from the cooler 9 and is placed close to the slope 17, frost near the slope 17 can be efficiently removed by its radiant heat.

Moreover, the negative part of the defrosting pipe heater 12, that is, the protruding part 13
Since the protrusion 13 is placed in the space in front of the cooler 9, the temperature of the protrusion 13 rises more rapidly than other parts of the defrosting pipe heater 12, and tends to cause an upward air current in the space 18.

As a result, the hot air generated at the back side of the inner partition wall 1 is also guided by this upward airflow and reaches the front part of the inner partition wall 1.

For this reason, there is also an effect that the frost on the slope 17 is more easily defrosted.

Further, the clamper 14 has the function of preventing the temperature of the defrosting pipe heater protrusion 13 from rising excessively, and also has the function of fixing the defrosting pipe heater protrusion 13 which is unstable.

As mentioned above, in the present invention, a part of the defrosting pipe heater protrudes from the fin end face of the cooler, and this protruding part and the pipe of the cooler are clamped with a thermally conductive member, so that the front part of the partition A part of the defrosting pipe heater comes close to the frost generated at the confluence of the cold air on the freezer compartment side and the cold air on the refrigerator compartment side, and the frost in this part can be easily defrosted by radiant heat.

In addition, because a part of the defrosting pipe heater is placed almost suspended in the space in front of the partition wall, upward airflow is likely to occur in this space, and the The induced hot air deep inside the partition wall is also effective in removing the frost mentioned above.

Furthermore, if the defrosting pipe heater is placed away from the fin end face of the cooler, it tends to become unstable, but since the cooler pipe and the protruding part are gripped by a thermally conductive member,
In addition to solving the above problem, this heat conductive member can also contribute to preventing excessive temperature rise in the protruding portion.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a partition wall in a refrigerator according to an embodiment of the present invention, and FIG. 2 is a top view of the cooler. 1...Inner partition wall, 9...Cooler, 12
...Defrosting heater (defrosting pipe heater), 1
3... Protruding part, 14... Clamper (
thermally conductive member).

Claims (1)

[Scope of utility model registration request] A cooler is installed inside the partition wall that partitions the main body into two upper and lower chambers, a freezer compartment and a refrigerator compartment, and forms an inlet for both chambers at the front, and a defrosting heater is placed in the cooler. A part of the defrosting heater on the air inflow side to the cooler is made to protrude forward from the fin end face of the cooler, and this protruding part and the pipe of the cooler are clamped with a thermally conductive member. Refrigerator defrost device.