JPS6032106B2 - Freezer refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigerator-freezer, and more particularly, to a refrigerator equipped with a dedicated freezing compartment and a dedicated refrigerating compartment, and in particular, the volume ratio of the freezing compartment and the refrigerating compartment can be increased or decreased as necessary. The invention relates to a refrigerator-freezer.

Conventionally, commercially available refrigerator-freezers take into consideration that there are fewer frozen foods than refrigerated foods, and the size of the freezer compartment is smaller than that of the refrigerator compartment.

However, recently, frozen foods have started to become available in large quantities.
Even in this type of refrigerator-freezer, the ratio of the freezer compartment to the refrigerator itself tends to increase year by year. However, since some users do not fully accept this new trend, users have come to prefer devices that allow the internal volume of the freezer compartment to be increased or decreased as needed.

The present invention has been made in view of the above points, and includes a refrigerator-freezer comprising a freezer compartment, a refrigerator compartment, and a switching compartment (freezer compartment←→refrigerating compartment), and a cold air amount adjustment mechanism to adjust the indoor temperature of the switching compartment. The switching chamber can be switched between a freezing chamber and a refrigerator, and the volumes of the refrigerator and freezing chambers can be increased or decreased as necessary.

The details of the present invention will be explained below with reference to an embodiment shown in the drawings.
is the main body of the refrigerator, which has a switching chamber in addition to the freezing and refrigerating compartments.

2 is a door that closes the front opening □ of the freezer compartment, 3 is a door that closes the front entrance of the refrigerator compartment 3a, and 4 is a door that closes the front opening □ of the switching chamber, which will be described later.

Reference numeral 5 indicates the freezing room, 6 a fusuma room, 7 a condenser, and 8 a compressor, which are installed in the machine room 9.

Reference numeral 10 denotes a partition that divides the freezer compartment 5 and the sliding door compartment 6.

Reference numeral 11 denotes a cooler provided on the back wall of the switching chamber 6, which together with the condenser 7, compressor 8, etc., constitutes a refrigeration cycle.

Reference numeral 12 denotes a partition plate provided on the front surface of the cooler 11, and its upper end is connected to a duct plate 13 that guides the cold air cooled by the cooler 11 to the freezer compartment 5.

Reference numeral 14 indicates a cold air discharge hole provided at the upper part of the duct plate 13.

Reference numeral 15 denotes a blower provided in the cold air discharge hole 14, which is driven by a drive motor 16.

Reference numeral 17 indicates a cold air blowing hole to the freezer compartment 5.

Reference numeral 18 denotes an ice-making chamber provided immediately near the blow-off hole 17.

19 directs a part of the cold air discharged from the discharge hole 14 to the pressure chamber 2.
This is a partition duct plate leading to 5.

This partition duct plate 19 forms the apparent back surface of the freezer compartment. This is the air inlet of the freezer compartment 5, which is provided with a partition wall 101 between the two rivers.

The cold air sucked in from this suction port 20 after cooling the freezer compartment is transferred to a cold air passage 21d formed in the partition wall 10, and a cold air passage 2
A part is blown out into the conversion chamber 6 through 2, and the rest is blown out into the passage 21.
It reaches the pressure chamber 25 through b. 23 is a damper thermo that adjusts the amount of cold air blown into the refrigerator compartment 6.

This damper thermostat 23 is installed in the cold air passage 22. 24 indicates an air outlet to the switching chamber.

One end of the cold air passage 22 having the damper thermostat 23 faces the cold air blowing hole 24 . Further, one end of a cold air passage 21b, a cold air passage 22, and a cold air passage 26 formed between the duct plate 13 and the partition duct plate 19 are closed in the pressure chamber 25. Reference numeral 27 denotes a partitioning thermal wall provided to form a return passage 28 between it and the partition plate 12 provided at the front of the cooler 11, and also to form an apparent back wall of the switching chamber 6a.

The above return passage 28 has one end open to the previous pressure chamber 25, and the other end closed to the cold air suction port 29 of the switching chamber. 30 is a switching damper provided within the pressure chamber 25.

This effective damper 30 includes a cold air passage 26 and a cold air passage 21.
This selects whether to send the cold air entering the pressure chamber 25 through b to the cold air return passage 28 side or to the side air blowing hole 24 side of the sliding door chamber 6. 31 is a bar.

By operating this lever 31, the damper opens and closes the cold air passage. Here, how to use the switching chamber will be explained with reference to FIGS. 3 and 4 (first, when the switching chamber is used as a refrigerating room). At this time, the switching damper 30 is in the position shown by the solid line in FIG. When the refrigerator starts operating in such a state, the cold air cooled by the cooler 11 passes through the duct plate, reaches the blower 15, and most of it is blown out from the air outlet 17 into the freezer compartment 5. On the other hand, the remaining cold air reaches the pressure chamber 25 from the cold air passage 26, and then returns to the cooler 11 through the cold air passage 28. The cold air blown into the freezer compartment 5 is cooled into the freezer compartment 5 and then sucked into the cold air passage 21 through the cold air suction port 20 provided on the partition wall.
leading to. Next, it reaches the switching chamber via a cold air passage 22 in which a damper thermostat 23 for automatic cold air adjustment is provided.
At this time, the cold air that is prevented from being blown into the sliding door chamber 6 by the damper thermostat 23 is returned to the cooler via the cold air passage 28. On the other hand, the cold air that has cooled the switching chamber 6 passes through the liner air suction port 29 and returns to the middle of the cooler, forming a cold air circulation path.
Also, a part of the cold air blown out from the blower 15 reaches the refrigerator compartment 3a via a damper thermometer 32 for automatic cold air adjustment.
It is then returned to the cooler 11. Item number 33 shown in FIG. 2 is a return port from the refrigerator compartment 3a. In addition, when the switching chamber 6 is used as a freezing chamber (if the cutting damper 30 is moved to block the cold air passage 28 side as shown by the broken line in FIG. 2, the damper thermometer installed between the freezing chambers 6 Since it is completely blocked, the cold air that has passed through the freezer compartment 5 is transferred to the effective damper 3.
The cold air that enters the switching chamber via 0 and does not pass through the freezer compartment 5 is also discharged into the switching chamber 6, while the cold air passage returns to the cooler 11 via the damper thermometer 32, the refrigerator compartment 3a, and the cooler 11. is formed. By configuring such a cold air circulation path, the temperature of the switching chamber 6 can be made to be approximately the same as that of the freezing chamber or the temperature of the refrigerating chamber.

In addition, when trying to improve the responsiveness when opening and closing the door in the switching chamber or when applying a load in a refrigerator having the above-mentioned air passage, it is effective to use the configuration shown in Figs. 5 and 6. .

That is, in FIG. 5, 8 is a compressor, 34 is a temperature regulator installed in the freezer compartment 5, and this temperature regulator 34 is the compressor 8.
It stops the operation. Reference numeral 35 denotes an auxiliary temperature regulator installed in the switching chamber 6, which is connected in parallel to the temperature regulator 34 and in series with the compressor 8.

By doing so, the set temperature in the switching chamber 6 can be quickly brought to a predetermined temperature.

In other words, if the auxiliary regulator 35 is not located in the switching chamber 6 in a refrigerator having the air passage configuration described above, the temperature rise in this chamber will not be easily transmitted to the temperature regulator 34 in the freezer compartment ( The cold air in the sliding compartment 6 passes through the cooler 11 and then reaches the freezer compartment. Of course, the operating temperature of the temperature regulator at this time is different from that of the previous temperature regulator. In addition, it is possible to control the operation of the compressor 8 with one temperature regulator 34 to maintain the temperature in the freezer compartment 5 and the sliding door compartment 6 to a predetermined temperature without using the temperature regulator 35. In this case, it is preferable to install the heat-sensitive part of the temperature regulator on a thinner partition wall in a place where it can be affected by the temperature inside the sliding door room.

Furthermore, defrosting in a refrigerator having this type of switching chamber is significantly different from that in conventional refrigerators. In other words, if the switching room is used as a refrigerator, a large amount of frost will form on the cooler.
When the sliding door room is used as a freezing room, the amount of frosting is about the same as before. In other words, the amount of frosting is largely influenced by the items stored in the refrigerator compartment. In view of this, in the present invention, a gutter auxiliary heater 37 is provided in addition to the gutter heater 36 conventionally provided at the bottom of the cooler, and the gutter heater 36 generates heat during defrosting regardless of switching of the switching chamber.
The other gutter auxiliary heater 37 is designed to save power by generating heat only when the switching room is used as a refrigerator room.

As explained above, the present invention has a freezer compartment, a refrigerator compartment, and a sliding door compartment, and a cooler is arranged in the switching room, and one blower, one sliding door damper, two damper thermostats, and a compressor. In a refrigerator that has a temperature controller that stops the machine and cools each chamber to a set temperature, a gutter heater and a gutter auxiliary heater are installed at the bottom of the cooler, and the switching chamber is used as a refrigerator room. Sometimes, when the gutter heater and the gutter auxiliary heater are not likely to generate heat, the gutter auxiliary heater is designed not to generate heat, so it not only saves power, but also lowers the temperature in the switching room from around -18℃ as necessary. Since the user can easily select a temperature around 12° C. by operating only the switching damper, the user can increase or decrease the internal volume of the freezer compartment as necessary.

[Brief Description of the Drawings] Figure 1 is a front view of a refrigerator-freezer equipped with the present invention, Figure 2 is an enlarged cross-sectional view taken along line AA in Figure 1, and Figures 3 and 4 are air passages of the present invention. Figure 3 shows when the partition room is used as a refrigerating room, Figure 4 shows when the sliding door room is used as a switching room, and Figure 5 shows when an auxiliary temperature controller is added. , FIG. 6 is an enlarged cross-sectional view of a portion of the present invention. 1... Refrigerator body, 2, 3, 4... Door, 3a... Refrigerator compartment, 5... Freezer compartment, 6... Switching chamber, 7... Condenser, 8... Compressor, 9... Machine room, 10... Middle partition wall, 11... Cooler, 12... Partition plate, 13...
Duct plate, 14...Cold air discharge hole, 15...Blower,
16... Drive motor, 17... Cold air outlet, 18...
Ice making room, 19... Partition duct plate, 20... Cold air suction port, 21... Cold air passage, 22... Cold air passage, 23.
...Damper thermo, 24...Cold air outlet, 25...
・Pressure chamber, 26...Cold air passage, 27...Partitioning hot wall, 28...Return passage, 29...Cold air suction port, 30.
...Switching damper, 31...Lever, 32...Damper thermo, 33...Return port, 34...Temperature regulator, 35...Auxiliary temperature regulator, 36...Gutter heater, 3
7. ．．・Gutter auxiliary heater. Figure 1 *2 Figure Winter 5 Figure Younger brother Figure A4 Figure Younger brother 5

Claims (1)

[Claims] 1. Temperature control that has a freezing room, a refrigerator room, and a switching room, and a cooler is installed in the switching room, and one blower, one switching damper, two damper thermostats, and a compressor are stopped. In a refrigerator that cools each chamber to a set temperature, a gutter heater and a gutter auxiliary heater are installed at the bottom of the cooler, and the gutter heater is used during defrosting regardless of the switching of the switching chamber. A refrigerator-freezer characterized in that a gutter auxiliary heater is operated only when heat is generated and the switching chamber is used as a refrigerator compartment.