JPS6193379A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a direct cooling refrigerator equipped with a freezer compartment and a refrigerator compartment, and a condenser pipe built into the back of the outer box.

Conventional configuration and its problems A conventional example will be explained with reference to FIGS. 4 to 8.

In the figure, reference numeral 1 denotes a refrigerator body, which is composed of an outer box 2, an inner box 3, and a heat insulating material 4 filled between these two boxes, with a freezer compartment 6. A refrigerator compartment 7 is formed at the bottom. Reference numeral 8 designates a refrigerator compartment cooler of the refrigeration cycle, and 9 designates a freezer compartment cooler, which is sealed tightly on the back surface of the inner box 3 using a thermally conductive material such as aluminum foil. Of these, the refrigerator compartment cooler 8 needs to be defrosted every time the compressor 10 is stopped, and is not placed on the top or side surface in order to prevent defrost water from flowing into the room and to facilitate drainage. It is not suitable and is usually installed on the back surface 3a of the inner box of the refrigerator compartment 7. Reference numeral 11 denotes a temperature regulator provided in the refrigerator compartment 7, and its heat-sensitive tube 12 is provided on the surface of the inner box back surface 3a in a thermally conductive manner to sense the temperature behavior of the refrigerator compartment cooler 8.

Reference numeral 13 denotes a condenser pipe, and in recent years, for aesthetic reasons, it has been tightly attached to the back surface of the outer box 2 with a heat conductive material such as aluminum foil, and for ease of assembly, it has been installed on the back [m plate 2a]. Often.

As for the refrigeration cycle, as shown in FIG.
It is sequentially connected to the compressor 10 by piping.

In this configuration, the high-temperature high-pressure gas compressed by the compressor 10 is guided to the condenser pipe 13, heat is radiated to the outside using the back plate 2a of the outer box 2, and the gas is condensed and liquefied, and the pressure is reduced by the capillary tube 16. First, it flows into the refrigerator compartment cooler 8 and evaporates to cool the refrigerator compartment 7. Next, after flowing into the freezer compartment cooler 9 and cooling the freezer compartment 8, it is sucked into the compressor 10 through the suction pipe 16, and thereafter, by the control action of the temperature regulator that senses the temperature behavior of the refrigerator compartment cooler 8. operation of the compressor 10;
It controls the stoppage and performs the normal cooling action.

However, at this time, the heat radiation of the condenser pipe 13 is not only carried out to the back plate 2a of the outer box 2, but also to the cooler and inner box 3 side opposite to this via the heat insulating material 4. This partially inhibits the evaporation action of the cooler and causes heat to leak into the freezer compartment 6 and refrigerator compartment γ. In particular, for the refrigerating compartment 7 in which the refrigerating compartment cooler 8 is disposed only on the inner box rear surface 3a for the above-mentioned reasons, the influence is considerably large. That is, due to the heat dissipation effect of the condenser pipe 13, the cooling capacity of the refrigerator compartment cooler 8 cannot be fully demonstrated, and the heat-sensitive tube 12 of the temperature regulator 11 cannot be cooled to a predetermined temperature at which the compressor 10 is stopped. If the compressor 10 is operated continuously without losing its temperature control ability, the inside of the refrigerator compartment 7 becomes supercooled and the food in the room freezes, or the power consumption 17'c becomes abnormally high. was there.

OBJECTS OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to prevent the heat influence on the refrigerator compartment side of the condenser pipe built in the outer box, and to perform a normal temperature control function.

Structure of the Invention In order to achieve this object, the present invention provides a condenser pipe built into the back of the outer box, which is mostly disposed in the outer box part facing the freezer compartment, thereby making it possible to connect the refrigerator compartment to the indoor side. This prevents almost all heat leakage, allows the refrigerator compartment cooler to perform its original cooling action, and performs normal temperature control.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Note that detailed explanations of the same configurations as those of the prior art will be omitted, and only the different parts will be described.

Reference numeral 17 denotes a condenser pipe, most of which is disposed on the back surface of the outer box 2 facing the freezer compartment e in close thermal conductive contact with a heat conductive material such as aluminum foil. Also, the refrigeration cycle is as follows: compressor 1o - condenser vibrator 1f -> dryer 14 -> capillary tube 16 -> refrigerator compartment cooler 8 - freezer compartment cooler 9 - suction pipe 16
- Piping is connected to the compressor 10 in an annular manner. The wall thickness of the insulation material on the side of the freezer compartment 6 is set to be large.

In this configuration, the high-temperature, high-pressure refrigerant gas compressed by the compressor 10 is guided to the condensing pipe 17 and is radiated to the outside via the outer box 2, while a portion of the inner box 3 is also passed through the heat insulating material 4. However, since most of the condenser pipe 17 is disposed in the outer box 20 facing the freezer compartment 6, the heat leaking to the inner box 3 through the insulation material 4 is Most of the heat is absorbed by the freezer compartment 6 side and does not affect the refrigerator compartment 7 side. Therefore, the cooling action of the refrigerator compartment cooler 8 is not inhibited and the original cooling ability can be exhibited.
It is also possible to grasp the temperature behavior of the refrigerator compartment cooler 8 and appropriately control the operation and stop of the compressor 10 to perform normal temperature control operations. Further, the temperature influence on the side of the freezer compartment e can be ignored due to the large wall thickness of the heat insulating material and the large cooling area.

Effects of the Invention As is clear from the above explanation, the present invention provides a cooler that is constructed of an outer box, an inner box, and a heat insulating material filled between these boxes, and is provided separately opposite the freezer compartment and the refrigerator compartment. and a condenser pipe that is in close thermal conductive contact with the back surface of the outer box, and most of the condenser pipe is disposed on the back surface of the outer box facing the freezer compartment. Most of the heat leakage to the indoor side due to heat dissipation from the pipes is from the freezer compartment and has almost no effect on the refrigerator compartment, so there is no heat load on the refrigerator compartment cooler or refrigerator compartment. The cooler exerts sufficient cooling capacity and transmits temperature behavior to the heat-sensitive tube of the temperature controller, so the temperature controller can accurately operate and stop the compressor at the desired operating temperature and maintain normal operation. The temperature control effect is guaranteed, the danger of freezing in the refrigerator compartment is eliminated, and at the same time, unnecessary energy consumption can be prevented, and the implementation effect is extremely high.

[Brief explanation of drawings]

FIG. 1 is a perspective view from the back of a refrigerator showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line A'-A' in FIG.
3 is a refrigeration cycle piping diagram of the refrigerator in FIG. 1, FIG. 4 is a perspective view from the back of the refrigerator showing a conventional example, FIG. 5 is an assembled perspective view of the inner box and cooler in FIG. 6 is a simplified sectional view of FIG. 4, FIG. 7 is a sectional view taken along line A--A of FIG. 4, and FIG. 8 is a refrigeration cycle piping diagram of the refrigerator of FIG. 4. 2...Outer box, 3...Inner box, 4...
... Insulation material, 5 ... Division wall, 6 ... Freezer room, 7 ... Refrigerator room, 8 ... Refrigerator room cooler, 17 ... ...Condenser pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure! Figure 2 Figure 3 Figure 4 Figure 5 Figure 6・I Figure 7

Claims (1)

[Claims] A freezer compartment and a refrigerating compartment that are composed of an outer box, an inner box, and a heat insulating material filled between the two boxes, and are partitioned by partition walls, and a cooler provided separately opposite the freezing and refrigerating compartments. and a condenser pipe that is thermally conductively in close contact with the back surface of the outer box, the condenser pipe being mostly disposed on the back surface of the outer box facing the freezer compartment.