JPS6123463B2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a refrigerator-freezer in which a refrigerator compartment is arranged in the upper part and a freezer compartment and a vegetable compartment in the lower part, in which each compartment is cooled by forced ventilation, and the cold air duct is short-circuited to the freezer compartment. a damper for a cold air duct short-circuited to the vegetable compartment; and a damper for a cold air duct short-circuited to the vegetable compartment, the cold air being branched from a branching pressure chamber provided in the refrigerator compartment to the refrigerator compartment and the vegetable compartment. The vegetable compartment can also be used as a freezer compartment by opening and closing the compartment.

A conventional worktop type T-type three-door refrigerator-freezer has a structure as shown in FIGS. 1 and 2. That is, 1 has a refrigerator compartment 4 in the upper part by a horizontal heat-insulating partition wall 2 and a vertical heat-insulating partition wall 3.
In addition, the refrigerator-freezer body is made of an insulated box body with a freezer compartment 5 and a vegetable compartment 6 partitioned in the lower part, and the front openings of each of the refrigerator compartment 4, freezer compartment 5, and vegetable compartment 6 are provided with insulating doors 4', 5' and 6' are pivotally supported so that they can be opened and closed. Reference numeral 7 designates an evaporator storage chamber formed in the center of the heat insulating partition wall 2, in which an evaporator 8 and a blower fan 9 are stored. Cold air duct 1 for supplying cold air from the evaporator 8 to each of the compartment 5 and the vegetable compartment 6
0, 11, and 12 are provided.

Cold air is sent directly to the freezer compartment 6 through a duct 11, and cold air from the evaporator 8 is sent to the refrigerator compartment 4 through a duct 10 and a refrigerating thermospar (not shown). The amount of cold air in the refrigerator compartment 4 is maintained at a predetermined temperature by opening and closing the thermostat for refrigeration.

Further, the vegetable compartment 6 is indirectly cooled by the cold air duct 12 from the back wall and the upper wall. 13 is a condenser attached to the rear wall of the refrigerator-freezer body 1, 14 is a compressor installed at the bottom of the refrigerator-freezer body 1, and 15 is an evaporation plate.

In the above structure, when the refrigeration cycle is operated and the blower fan 9 is driven, cold air from the evaporator 8 is sent out into the freezer compartment 5 through the duct 11, and then returns to the evaporator 8 side. On the other hand, the cold air passing through the duct 10 is guided into the refrigerator compartment 4 via the refrigerating thermo-modifier, and the temperature of the refrigerating compartment 4 is maintained at a predetermined temperature by adjusting the amount of cold air by opening and closing the refrigerating thermo-modifier. . The cold air involved in the refrigeration is then returned to the evaporator 8 side through the return passage. Further, the cold air from the evaporator 8 is sent to the duct 12, cools the vegetable compartment 6, and then returns to the evaporator 8 side.

By repeating the above operations, the refrigerator compartment 4, the freezer compartment 5, and the vegetable compartment 6 are cooled to a predetermined temperature, but in the above structure, in order to be able to switch the vegetable compartment 6 to the freezer compartment, even in the case of weak freezing, the vegetables Approximately 8 when used indoors (when the heat load of the vegetable compartment is the same as that of the freezer compartment)
Since the amount of air blown would be more than twice as large, it was impossible to use the cold air duct 12 for the vegetable compartment 6 as described above.

The present invention has been made in view of the above points,
To provide a refrigerator-freezer configured with a cold air circuit so that a vegetable compartment can also be used as a freezer compartment.

The present invention will be explained in detail below with reference to FIGS. 3 to 6.

3 is a front view of the refrigerator-freezer of the present invention, FIG. 4 is a sectional view of the right side of the refrigerator-freezer of the present invention, FIG. 5 is a sectional view of the left side of the refrigerator-freezer of the present invention, and FIG. It is an A-line sectional view.

In these drawings, 21 indicates an inner box 22 and an outer box 2.
A foamed insulating material 24 is filled between the 3 and 3 to form a foamed refrigerator-freezer body, and the inside is covered with a horizontal insulating partition wall 2.
5 and a vertical heat insulating partition wall 26, the upper part is a refrigerator compartment 27, and the lower part is a freezer compartment 28 and a vegetable compartment 29. Insulating doors 27', 28', and 29' are pivotably supported in the openings so as to be openable and closable, respectively.

Reference numeral 30 denotes an evaporator storage chamber for housing the evaporator 31, which is formed in the center of the heat insulating partition wall 25. 32 directs the cold air from the evaporator 31 to the refrigerator compartment 2.
The cold air duct for refrigeration is guided to the upper part of the refrigerator compartment 27, and a thermosparper 33 that opens and closes by detecting the temperature inside the refrigerator compartment 27 is attached to its discharge port. 34 is a freezing cold air duct for guiding cold air from the evaporator 31 to the upper part of the freezer compartment 28. Reference numeral 35 denotes a blower fan attached to the branching point between the cold duct 32 for refrigeration and the cold air duct 34 for freezing, and forcibly sends the cold air from the evaporator 31 to the cold duct 32 for refrigeration and the cold air duct 34 for freezing. The electric motor section 36 is installed outside the refrigerator-freezer main body 21. Reference numeral 37 designates a cold air distribution plate provided in front of the discharge port of the cold air duct 34 for freezing, and has ventilation holes 38 in the upper and lower parts of the plate.
is installed. Reference numeral 39 indicates a first suction port for returning the cold air sent into the freezer compartment 28 into the evaporator storage chamber 30.

Reference numeral 40 denotes a branching pressure chamber installed at the discharge port of the cold air duct 32 for refrigeration having the thermometer par 33, and a discharge chamber for directly supplying cold air regulated by the thermometer 33 to the refrigerator compartment 27 side. The vegetable compartment 29 via the outlet 40a and the communication duct 41
It has a discharge port 40b for supplying water to the inside. The cold air supplied into the branching pressure chamber 40 is separated into a predetermined duct resistance ratio [for example, 25 (refrigeration compartment side): 1 (vegetable compartment side)] and is separated into the discharge port 4.
It is led into the refrigerator compartment 27 and the vegetable compartment 29 from 0a and 40b.

42 is a guide plate provided at the outlet of the vegetable compartment 29, and a ventilation hole 43 for supplying cold air to the vegetable compartment 29 and a second suction port of the evaporator storage compartment 30 to direct the cold air in the vegetable compartment 29. Ventilation hole 45 for returning to the 44 side
A part of the cold air from the communication duct 41 is returned to the second suction port 44 side without being sent to the vegetable compartment 29 side between the guide plate 42 and the wall surface of the vegetable compartment 29. A cold air passage 46 is formed for this purpose. Reference numeral 47 denotes a cold air duct for switching the freezer compartment that directly connects the blower fan 35 and the vegetable compartment 29, and a discharge port 47a of this cold air duct 47 on the vegetable compartment 29 side.
Dampers 48 and 49 are provided at the outlet 41a of the communication duct 41 on the side of the vegetable compartment 29, respectively, and by opening and closing these dampers, the vegetable compartment 29 can be used as a vegetable storage compartment or a freezer compartment. There is.

Note that 50 is a vegetable container that is detachably installed in the vegetable compartment 29, 51 is a compressor, 52 is a ventilation path for guiding the heat of the compressor 51 and condenser 53 to the outside by a chimney effect, and 54 is an evaporation plate. .

Here, the operation of the present invention will be explained. Now, when the refrigeration cycle is operated and the blower fan 35 is driven, the cold air from the evaporator 31 is forcibly sent to the cold air duct 32 for refrigeration and the cold air duct 34 for freezing by driving the blower fan 35. and,
The cold air sent to the freezing cold air duct 34 flows into the freezing compartment 28 through the ventilation hole 38 of the cold air distribution plate 37, cools the freezing compartment 28 here, and then flows into the evaporator storage compartment 30 through the first suction port 39. will be returned within.
The temperature of this freezer compartment 28 is determined by the temperature of the compressor 51.
It is kept constant by ON/OFF operation.

On the other hand, the cold air sent to the cold air duct 34 for refrigeration is sent to the branch pressure chamber 40 via the thermometer 33.
Here, according to a predetermined duct resistance ratio, it flows into the refrigerator compartment 27 from the discharge port 40a, and from the discharge port 40b.
Cold air is led from the vegetable compartment 29 through the communication duct 41 into the vegetable compartment 29. The refrigerator compartment 27 is maintained at a predetermined temperature by the opening and closing operations of the thermostat 33.

On the other hand, some of the cold air sent from the outlet 40b of the branching pressure chamber 40 to the vegetable compartment 29 side via the communication duct 41 passes through the cold air passage 46 to the evaporator storage chamber 3.
0, and the remaining cold air flows through the ventilation hole 4 of the guide plate 42.
3 into the vegetable compartment 29. At this time, the cold air is adjusted to a constant temperature by the thermometer 33 before entering the branching pressure chamber 40, so it is not affected by fluctuations in the operating rate of the compressor or ambient temperature as in the conventional case. Not, again,
The vegetable compartment 29 is always maintained at a predetermined temperature. Furthermore, since the cold air supplied into the vegetable compartment 29 is fresh air before being sent to the refrigerator compartment 27, the odor from the refrigerator compartment 27 will not flow into the vegetable compartment 29. In addition, when the vegetable compartment 29 is used as a normal vegetable storage compartment in this way, the damper 49 of the outlet 41a of the communication duct 41 is opened, and the damper 48 of the outlet 47a of the cold air duct 47 for switching the freezer compartment is closed. do.

Next, when the vegetable compartment 29 is used as a freezer compartment, the damper 49 of the outlet 41a of the communication duct 41 is closed, and the outlet 47 of the cold air duct 47 for switching the freezer compartment is closed.
Open the damper 48 of a. In this way, the cold air circuit of the communication duct 41 is closed, and the cold air duct 47 is closed.
A cold air circuit on the side is configured so that cold air is directly sent from the blower fan 36 to the vegetable compartment 29, and the vegetable compartment 29 functions as a freezer compartment. Note that the cold air that has cooled the vegetable compartment is returned into the evaporator storage chamber 30 through the first suction port 39.

As described above, the present invention places the refrigerator compartment in the upper part, the freezer compartment and the vegetable compartment in the bottom left and right, the evaporator is placed horizontally in the lower part of the refrigerator compartment, and the cooling fan is located behind the evaporator. A refrigerator in which cold air is discharged from a blower fan to a branch pressure chamber in the refrigerator compartment via the refrigerator compartment duct, with some of the cold air being supplied directly into the refrigerator compartment, and the rest being supplied to the vegetable compartment via the vegetable compartment duct. In the refrigerator, the vegetable compartment is provided with another cold air duct that is directly connected to the ventilation fan, and a damper is provided at the outlet of this duct, so that the vegetable compartment can be switched to the freezer compartment by opening and closing the damper. According to the present invention, a conventional vegetable compartment can also be used as a freezer compartment by simply opening and closing a damper, thereby providing a refrigerator-freezer with extremely high added value.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of a conventional refrigerator-freezer;
The figure is a cold air circuit diagram when viewed from the front of Figure 1, and Figure 3.
The figure is a front view of the refrigerator-freezer of the present invention, FIG. 4 is a right side cross-sectional view of the refrigerator-freezer of the present invention, FIG. 5 is a right side cross-sectional view of the refrigerator-freezer of the present invention, and FIG.
FIG. 21: Refrigerator body, 27: Refrigerator room, 28:
Freezer compartment, 29: Vegetable compartment, 31: Evaporator, 32: Refrigeration cold air duct, 33: Thermostat par, 34:
Freezing cold air duct, 35: Blowing fan, 40: Branching pressure chamber, 41: Communication duct, 47: Cold air duct, 48, 49: Damper.

Claims (1)

[Claims] 1 The refrigerator compartment is located at the top, the freezer compartment and vegetable compartment are located at the bottom left and right, the evaporator is placed horizontally at the bottom of the refrigerator compartment, and the cooling fan is located behind the evaporator, and the refrigerator compartment duct is connected to the refrigerator compartment from this fan. In a refrigerator-freezer, a portion of the cold air discharged into the branch pressure chamber in the refrigerator compartment is supplied directly to the refrigerator compartment, and the rest is supplied to the vegetable compartment via the vegetable compartment duct. A refrigerator-freezer characterized in that the refrigerator is provided with another cold air duct that is directly connected to the blower fan, and a damper is provided at the outlet of this duct, and the vegetable compartment can be switched to the freezer compartment by opening and closing the damper. .