JPS6227823Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a refrigerator in which a plurality of condenser pipes are arranged in a refrigerator body so as to have a rising part and a falling part.

[Technical background of the invention]

Conventionally, the main condenser pipe is arranged to rise along one side edge of the back of the refrigerator body, extend laterally along the upper edge, and descend along the other side edge. A sub-condenser pipe, which also acts as a heating source to prevent condensation, is placed along the left and right edges and the top edge of the front of the refrigerator, and both the main and sub-condenser pipes are connected in series. There is a refrigerator in which a refrigerant compressed by a compressor disposed at the bottom of the main body is condensed by both condenser pipes and then supplied to a cooler.

[Problems with background technology]

According to the above configuration, a trough is formed between the falling part on the outlet side of the main condenser pipe and the rising part on the inlet side of the sub-condenser pipe. If a solenoid valve is installed to prevent overheated liquid refrigerant from flowing into the cooler due to blockage when stopped,
When the compressor stops, liquid refrigerant will accumulate in the valley. If the compressor is restarted in this condition, the proportion of gas refrigerant in the valleys (dirency) will rapidly decrease due to the liquid refrigerant stagnation immediately after the restart, and as a result, the liquid refrigerant will be transferred to the subcondenser. It takes time for the refrigerant to rise above the top of the pipe, and even if the compressor is restarted, it cannot immediately supply refrigerant to the cooler for cooling, which in turn increases the operating time of the compressor. This results in a problem of increased power consumption.

[Purpose of invention]

An object of the present invention is to provide a refrigerator that can prevent cooling delays after restarting the compressor, shorten the compressor operating time, and thereby reduce power consumption.

[Summary of the idea]

The present invention connects both lower ends of one of the plurality of condenser pipes to the compressor side and the cooler side, and connects the top of this one condenser pipe to the top of the other condenser pipe. , is characterized in that by connecting both lower ends of other condenser pipes to the cooler side, no valley is formed between the condenser pipes.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a refrigerator body, inside which a freezer compartment and a refrigerator compartment (not shown) are formed above and below, and a freezer compartment door 2 and a refrigerator compartment door 3 for opening and closing each of these compartments are disposed on the front part. . 4 is a compressor disposed at the bottom of the refrigerator body 1. Reference numeral 5 denotes a main condenser pipe, which is connected to the back of the refrigerator main body 1 by a rising part 5a along one side edge, a horizontal part 5b along the upper edge, and a falling part 5c along the other side edge. It is composed of 6 is the sub-condenser pipe,
This is disposed along the edges of the openings of the refrigerator and freezer compartments in the front of the refrigerator body 1, and heats the edges of the openings to prevent condensation. Specifically, this sub-condenser pipe 6 has a rising portion 6a along one side edge of the front surface of the refrigerator compartment and the front surface of the freezer compartment, and a horizontal portion 6b along the upper edge of the front surface of the freezing compartment.
, a first falling part 6c along the other edge of the front surface of the freezer compartment, a folded horizontal part 6d arranged in a folded manner along the front surface of the boundary between the freezer compartment and the refrigerator compartment, and the other part of the front surface of the refrigerator compartment. A second falling portion 6e along the side edge is made continuous. 7 is a connecting pipe,
This allows approximately the center of the horizontal portion 5b, which is the top of the main condenser pipe 5, to communicate with the approximately center of the horizontal portion 6b, which is the top of the sub-condenser pipe 6. Reference numeral 8 denotes a meandering auxiliary capacitor, which is disposed in the bottom of the refrigerator main body 1 and has a water tray (not shown) disposed above to receive defrosting water. The compressor 4, condenser pipes 5, 6, etc. arranged as described above are connected as shown in FIG. That is, the discharge side of the compressor 4 is connected to the lower end of the rising part 5a of the main condenser pipe 5 via the auxiliary capacitor 8, and is connected to the lower end of the rising part 5c of the main condenser pipe 5.
The lower ends of the rising portion 6a and the second falling portion 6e of the sub-condenser pipe 6 are connected to the inlet side of the dryer 9. The outlet side of the dryer 9 is
It is connected to the inlet side of a cooler 13 via a first capillary tube 10, a solenoid valve 11, and a second capillary tube 12 in this order. This solenoid valve 1
1 is opened when the compressor 4 is in operation and closed when the compressor 4 is stopped, so that when the compressor 4 is stopped, high-temperature liquid refrigerant in both the main and auxiliary condenser pipes 5 and 6 flows into the cooler 13. This is to prevent such things from happening. The outlet side of the cooler 13 is connected to the suction side of the compressor 4 via a check valve 14.

Next, the operation of the above configuration will be explained. When the compressor 4 starts, the refrigerant compressed by the compressor 4 flows into the rising part 5a of the main condenser pipe 5 from the lower end via the auxiliary condenser 8 and rises, and from the upper end of the rising part 5a into the horizontal part 5b. When flowing through the horizontal portion 5b, a portion of the water flows into the connecting pipe 7 side. The refrigerant that continues to flow within the horizontal portion 5b flows into the falling portion 5c from the upper end and flows into the dryer 9 from the lower end. Further, the refrigerant that has been diverted to the connecting pipe 7 side reaches the horizontal portion 6b of the sub-condenser pipe 6, and is then diverted to the rising portion 6a side and the first falling portion 6c side, and eventually to the rising portion 6a and the second falling portion 6c.
It also flows into the dryer 9 from the lower end of the falling portion 6e. Then, as described above, when the refrigerant flows through the auxiliary condenser 8, the main condenser pipe 5, and the auxiliary condenser pipe 6, it is condensed and liquefied, and the refrigerant is transferred to the first capillary tube 10, the electromagnetic valve 11, and the second capillary tube 12. The water flows into the cooler 13 through the . The liquid refrigerant that has flowed into the cooler 13 is vaporized here, exhibiting a cooling effect, and further flows back to the compressor 4 via the check valve 14. When the inside of the refrigerator is cooled by such a cooling operation, the compressor 4 is stopped and the solenoid valve 10 is closed. Immediately after the compressor 4 stops, the refrigerant is in a gas-liquid two-phase state in the main and auxiliary condenser pipes 5 and 6.
and 6, that is, to the lower ends of each rising portion 5a, 6a and each falling portion 5c, 6e, and accumulate there. At this time, since the solenoid valve 11 is closed, this relatively high temperature liquid refrigerant is transferred to the cooler 1.
There is no risk of it flowing into the cooler 13 and heating the cooler 13. Then, when the temperature inside the refrigerator rises again, the compressor 4 is restarted and the solenoid valve 11 is opened, so that the refrigerant compressed by the compressor 4 is transferred to the auxiliary condenser 8, the main condenser pipe 5, and the auxiliary condenser in the same manner as described above. It flows through the pipe 6, is condensed, and is supplied to the cooler 13 side. At this time, the liquid refrigerant remaining in both the main and auxiliary condenser pipes 5, 6 after the previous cooling operation accumulates at the lower end of each condenser pipe 5, 6, so the cooling as described above When the operation is restarted, it is easily pushed out and supplied to the cooler 13 side. As a result, after restarting the compressor 4, liquid refrigerant can be supplied into the cooler 13 and cooling can be started with almost no time delay.
The operating time of the system can be shortened, and power consumption can be reduced. Moreover, since the refrigerant flows in parallel to the falling part 5c of the main condenser pipe 5 and the sub-condenser pipe 6, the overall pressure loss can be reduced compared to the case of series connection, and the load on the compressor 4 can be reduced. Therefore, further power saving can be achieved. Also,
Since the refrigerant is configured to flow in parallel in this way, the refrigerant flow rate of each condenser pipe 5, 6 can be arbitrarily set by appropriately setting the heat dissipation characteristics, shape, etc. of each condenser pipe 5, 6. Therefore, it is not preferable to flow the refrigerant approximately evenly into each condenser pipe 5, 6, or to cause overheating in the parts corresponding to the locks of the doors 2, 3 for the freezer and refrigerator compartments. It is also possible to allow already liquefied refrigerant to flow through the condenser pipes 5 and 6.

[Effect of idea]

As described above, in the present invention, multiple condenser pipes are connected by connecting pipes so that no valleys are formed between them, so unlike the conventional method, liquid refrigerant accumulates in the valleys after the compressor is stopped and is regenerated. It is possible to prevent a delay in the supply of refrigerant to the cooler at the time of startup, thereby shortening the operating time of the compressor and reducing power consumption.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic perspective view showing the piping structure such as a condenser pipe.
FIG. 2 is a cooling cycle configuration diagram. In the figure, 1 is the refrigerator body, 4 is the compressor, and 5
is the main condenser pipe (condenser pipe), 5
a and 5c are rising parts and falling parts, 6 is a sub-condenser pipe (condenser pipe), 6a is a rising part, 6c and 6e are first and second falling parts,
7 is a connecting pipe, and 13 is a cooler.

Claims (1)

[Scope of utility model registration request] The refrigerant compressed by the compressor is condensed through a plurality of condenser pipes, each of which is arranged in a generally inverted U-shape so that the refrigerator body has a rising part and a falling part, and is supplied to the cooler, and the refrigerant after the compressor is stopped. In the device, the lower ends of one of the plurality of condenser pipes are connected to the compressor side and the cooler side, respectively. A refrigerator characterized in that a top part is connected to the top part of another condenser pipe, and both lower ends of the other condenser pipe are connected to a cooler side.