JPS58200975A - Freezing 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 The present invention relates to a fan-type refrigerator-freezer that can perform direct cooling and rapid freezing.

Conventional fan-type refrigerator-freezers have the drawback that when freezing food, the food is cooled by applying cold air to the food, and the cooling speed of the food is slower than that of a direct cooling type.

Furthermore, the direct cooling type had the disadvantage that frost formed when the door was opened and closed, so the food had to be taken out and defrosted periodically.

In order to eliminate both of the above-mentioned drawbacks, the present invention adds the advantages of a direct cooling type to a fan type refrigerator-freezer so that rapid freezing can be performed using the direct cooling type.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing an example of the structure of a refrigerator-freezer according to the present invention, FIG. 2 is a refrigerant circuit diagram thereof, and FIG. 3 is an electric circuit diagram thereof.

In Fig. 1, l is a refrigerator compartment, 2 is a freezer compartment, and 3 is a cooler-only room located in the darkness between the refrigerator compartment 1 and the freezer compartment 2, and this cooler-only compartment 3 has a main cooler 4. is set up. 5
8 (d' is a fan motor that drives a cooling fan 5a that sends cold air cooled by the main cooler 4 to each room 1 and 2 via a duct 6.7; 8 (d' is a damper that adjusts the cold air flowing into the refrigerator compartment l) A thermostat 9 is a control thermostat for adjusting the temperature of the freezer compartment 2, 10 is a second cooler installed at the negative corner of the freezer compartment 2 to quickly freeze food, and 11 is a compressor.

Further, in FIG. 2, 4 is a main cooler, 10 is a second cooler, 11 is a compressor, 12 is a condenser, and 13 is a capillary tube, and the high-pressure refrigerant compressed by the compressor 11 is condensed in the condenser 12. After the pressure is reduced to an appropriate level in the capillary tube 13, the main cooler 4
and evaporates in the second cooler 10 and returns to the compressor 11. In addition, in this refrigerant circuit,
During normal cooling operation, most of the refrigerant evaporates in the main cooler 4, and the liquid refrigerant becomes I! 2 so that it does not flow into the cooler 10.

In Figure 3, 5 is the fan motor, 9 is the control thermometer, 11 is the compressor, 13 is the defrost timer,
14 is a timer contact, 15 is a quick freezing timer, 16 is a timer I contact, 17 is a timer B contact, 18 is a timer motor,
19 is a frosting heater, 20 is a differential thermostat, and 21 is a timer motor.

Next, one work will be explained with reference to the electric circuit shown in Figure 3.

During normal operation, the electric circuit is in the state shown in FIG. 3, and the compressor 11 is turned on and off by opening and closing of the control thermostat 9 for controlling the temperature of the freezing compartment, thereby keeping the temperature of the freezing compartment constant.

Also, the defrosting timer 13 is set to the timer A of the fast freezing timer 15.
Tanu in parallel with the compressor 11 via contacts 16;
The timer motor 21 integrates the operating time of the compressor 11 and periodically performs M removal.

In the refrigerant circuit during normal cooling operation, the main cooler 4 is designed to evaporate most of the refrigerant and no liquid refrigerant flows to the second cooler 10, so the second cooler lO is used for main cooling. The temperature will be higher than that in vessel 4. For this reason, moisture that enters the refrigerator due to opening and closing of the door is removed by the main cooler 4, and frost on the second cooler 10 is also carried to the main cooler 4 by sublimation, so the frost on the second cooler 10 is removed. There will be no attachment.

``Furthermore, the operation during quick freezing operation is as follows.

Place the food on the second cooler 10 and set the quick freeze timer 15
Set to an appropriate time. As a result, timer A contact 16
The a contact changes from the a contact to the b contact, the power supply circuits of the fan motor 5 and the timer motor 21 are opened, and the fan motor 5 and the timer motor 21 are stopped. In addition, the compressor 11
The compressor 11 operates continuously regardless of the operation of the control thermometer 9 because the power source and the power supply timer A contact 16 are connected to each other. Furthermore, since the timer B contact 17 is closed at the same time, the timer motor 18 operates.

On the other hand, in the refrigerant circuit, when the cooling fan 5a stops, the heat exchange in the main cooler 4 is interrupted, and the liquid refrigerant flows into the second cooler 10, so that food is directly absorbed in the second cooler 10. exchange heat, efficiently exchange heat,
Cools quickly.

Then, when the set time of the quick freezing timer 15 has elapsed,
The timer A and B contacts 16 and 17 return to the state shown in FIG. 3, and normal cooling is performed.

The refrigerator-freezer according to the present invention is equipped with a refrigerating compartment and a freezing compartment, and the main cooler is installed in the cooler-only compartment, and the second cooler is installed in the freezing compartment, and the refrigerant is connected to the main cooler. , second
It is a fan type in which these coolers are arranged so that the air flows in the order of the cooler, and during rapid operation, the cooling fan that sends cold air from the -L cooler to the refrigerator and freezer compartments is stopped, and the compressor is continuously operated. Moreover, since the defrost timer is stopped, food can be cooled rapidly without causing frosting, and a refrigerator-freezer that has both the advantages of a fan type and the advantages of a direct cooling type can be obtained. .

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of the structure of a refrigerator-freezer according to the present invention, FIG. 2 is a refrigerant circuit diagram thereof, and FIG. 3 is an electric circuit diagram thereof. 1: Refrigerator room, 2: Freezer room, 3: Cooler room,
4: Main cooler, 5a: Cooling fan, 5: Fan motor, 10: Second cooler, 11: Compressor, 13: Defrost timer, 15: i-speed freezing timer. HTh Attorney Patent Attorney Aihiko Fukushi (and 2 others)

Claims (1)

[Claims] 1.Equipped with a refrigerator compartment and a freezing compartment, the main cooler is installed in the cooler-only compartment, and the second cooler is installed in the freezer compartment, and these coolers are installed so that the refrigerant flows in the order of the main cooler and the second cooler. This is a fan-type refrigerator-freezer with a
A refrigerator-freezer characterized in that a cooling fan that sends cold air from a main cooler to a refrigerator compartment and a freezer compartment is stopped, a compressor is continuously operated, and a defrost timer is stopped.