JPS6227824Y2 - - 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 valley 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. Those equipped with a solenoid valve to prevent overheated liquid refrigerant from flowing into the cooler due to blockage during stoppage.
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 accumulating 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 is to connect a plurality of condenser pipes arranged in parallel to each other so as to have a rising part and a falling part in the refrigerator body, thereby preventing the formation of valleys between each condenser pipe. Has characteristics.

[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. Reference numeral 7 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 a joint tube 8 via an auxiliary condenser 7, and this joint tube 8 is connected to the rising portions 5 of both the main and auxiliary condenser pipes 5 and 6.
The lower ends of a and 6a are connected. The lower end of the falling part 5c of the main capacitor pipe 5 and the lower end of the second falling part 6e of the sub-condenser pipe 6 are both connected to the dryer 9, so that both the main and sub-condenser pipes 5 and 6 are connected to the dryer 9. are connected in parallel with each other. Furthermore, 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 through the auxiliary condenser 7 and flows from the joint tube 8 into both the main and auxiliary condenser pipes 5 and 6 from the lower ends of the rising portions 5a and 6a, respectively. . The refrigerant that has flowed into the main condenser pipe 5 flows from the rising part 5a through the horizontal part 5b and into the dryer 9 from the lower end of the falling part 5c, and the refrigerant that has flowed into the sub-condenser pipe 6 flows horizontally from the rising part 6a. It flows in order through the part 6b, the first falling part 6c, the folded horizontal part 6d, and the second falling part 6e, and also flows into the dryer 9 from the lower end of the second falling part 6e. As described above, when the refrigerant flows through the auxiliary condenser 7, the main condenser pipe 5, and the auxiliary condenser pipe 6, it is condensed and liquefied.
It flows into the cooler 13 via the first and second capillary tubes 12 in order. 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, on the dryer 9 side in each of the main and auxiliary condenser pipes 5 and 6,
Although the refrigerant is in a gas-liquid two-phase state, the liquid refrigerant immediately flows down to the bottom of each condenser pipe 5 and 6, that is, to the lower ends of the falling portion 5c and the second falling portion 6e. stagnate. At this time, solenoid valve 1
1 is closed, there is no risk that these relatively high temperature liquid refrigerants will flow into the cooler 13 and heat 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 is accumulated at the lower end of each condenser pipe 5, 6, so the cooling operation as described above is not performed. Upon restart, it is immediately 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, so the operating time of the compressor 4 can be shortened and power consumption can be reduced. can be achieved. Moreover, since the refrigerant flows in parallel through the main condenser pipe 5 and the sub-condenser pipe 6, the overall pressure loss is smaller than in the case of a series connection, and the load on the compressor 4 can be reduced, resulting in further power savings. can be achieved. Furthermore, since the refrigerant is configured to flow in parallel in this way, the refrigerant flow rate of each condenser pipe 5, 6 can be changed by appropriately setting the heat dissipation characteristics, shape, etc. of each condenser pipe 5, 6. Therefore, for example, by reducing the flow rate of refrigerant in the sub-condenser pipe 6, heat radiation can be suppressed and heat transfer from the sub-condenser pipe 6 into the refrigerator can be prevented.

[Effect of idea]

As described above, the present invention is different from the conventional method because a plurality of condenser pipes arranged in the refrigerator body are connected in parallel to each other so that no valleys are formed between them. On the other hand, it is possible to prevent liquid refrigerant from accumulating in the valley after the compressor is stopped and causing a delay in the supply of refrigerant to the cooler when the compressor is restarted, thereby shortening the operating time of the compressor and reducing power consumption. This has the effect of making it possible to achieve

[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,
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 arranged in the refrigerator body so as to have a rising part and a falling part, and is supplied to the cooler, and prevents the refrigerant from flowing into the cooler after the compressor is stopped. In those equipped with a valve that
A refrigerator characterized in that the capacitor pipes are connected in parallel to each other.