JPH0334629Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to a refrigerator equipped with a quick-freezing chamber in the freezer compartment, which performs quick-freezing operation until the food to be frozen is frozen, and automatically returns to normal operation after freezing is completed. This method is designed to enable so-called freezing to be performed easily and with high quality.

This invention will be explained in detail below with reference to the drawings.

Reference numeral 1 denotes a refrigerator body which is divided into a freezing compartment 3 and a refrigerating compartment 4 by a partition 2. Reference numeral 5 denotes a quick-freezing chamber provided within the freezing chamber 3, which has a door 6 that can be opened and closed at the front and a shelf board 7 made of a good thermal conductor such as aluminum at the bottom. 8 is an ice tray provided in the freezer compartment, and 9 is an ice storage box for storing ice made with this ice tray. Reference numeral 10 denotes a control section, which is provided with a normal freezer compartment temperature control dial 11 and a quick-freezing operation push button 12. Reference numeral 13 denotes a temperature-sensing section of a quick-freezing temperature regulator mounted on the lower surface of the shelf board 7 in the quick-freezing chamber. 14 is a cooler of a well-known refrigeration system;
A cold air forced circulation fan 15 and a fan motor 16 are provided at the top. Reference numeral 17 denotes a cold air outlet in the freezing chamber, which is provided to blow out cold air into the quick freezing chamber and the ice making section at a preset ratio. 1
8 is a cold air suction port of the freezer compartment. 19 is a so-called damper thermostat provided at the cold air outlet 20 of the refrigerator compartment, and 21 is a cold air intake port of the refrigerator compartment. Note that 22 is a freezer compartment door, and 23 is a refrigerator compartment door.

24 is a relay, which includes a contact part 24a and a coil part 24.
It starts from b. One side of the contact portion 24a is connected to the freezing room temperature regulator 11a, and the other is connected in series to the parallel circuit of the cold air circulation fan motor 16 and the compressor motor 25. The other circuit of the contact portion 24a of the relay is connected in series with one contact portion 13a of the quick freezing temperature controller and the coil portion 24b, forming a parallel circuit with the fan motor and the compressor motor. Reference numeral 12a designates a switch for quick freezing operation, which closes only when push button 12 is pressed and opens when push button 12 is released.It is connected in series with the other contact 13b of the temperature controller for quick freezing, and is connected in series to relay 24 and freezing. Connected in parallel with the series circuit of the room temperature controller 11a, between the quick freezing operation switch 12a and the contact 13b of the quick freezing temperature regulator, and between the relay contact 24a and the contact 13a of the quick freezing temperature regulator. is connected. Note that the contacts 13a and 13b of the quick-freezing temperature regulator are in motion, and both close at a temperature higher than the set temperature and open at a lower temperature. 26 is a food to be frozen.

In the refrigerator configured as above, the cooler 14
The cooled air is transferred to the ice tray 8 by a fan 15 driven by a cold air forced circulation fan motor 16.
The cold air is blown out into the freezer compartment 3 through the deep freeze compartment and quick freezing compartment 5 to cool the freezer compartment, enters the freezer compartment cold air inlet 18, and returns to the cooler part.
A part of the cold air cooled by the refrigerator compartment cold air outlet 20
is blown out into the refrigerator compartment 4, and after cooling the refrigerator compartment,
The cold air is sucked in from the refrigerator compartment cold air suction port 21 and returns to the cooler section, repeating the cycle.

The temperature in the freezer compartment 3 is adjusted to a constant temperature by the freezer compartment temperature regulator 11a by turning on and off the compressor motor 25 and the cold air forced circulation fan motor 16. On the other hand, the temperature of the refrigerator compartment is adjusted by controlling the amount of cold air blown into the refrigerator compartment by a damper thermostat 19.

Now, when you want to quickly freeze the food, place the food to be frozen 26 on the shelf board 7 and press the quick freeze operation push button 12 to turn on the quick freeze operation switch 1.
2a is closed, and the contacts 13a and 13b of the quick-freezing temperature controller, which is set at a temperature sufficiently lower than the temperature of the freezer compartment during normal operation (for example, -20°C), are closed, so the coil 24b is energized. Then, the contact part 24a of the relay 24 is driven to energize the coil 24b side, and the compressor motor 25 and the cold air forced circulation fan motor 16 short-circuit the freezing room temperature regulator 11a, and the quick freezing temperature regulator is operated through the contact portion 13b.

The food to be frozen 26 is thereby connected to the compressor motor 2.
5. The cold air forced circulation fan motor 16 is operated continuously, and the shelf board 7, which is a good heat conductor, also works as a heat radiation fin, so that freezing occurs rapidly. When the food to be frozen 26 is sufficiently frozen and, for example, the temperature sensing part of the quick-freezing temperature regulator reaches -20°C, the contact parts 13a and 13b of the quick-freezing temperature regulator are opened.
Coil 24b of relay 24 is also deenergized, and relay 2
The contact portion 24a of No. 4 is again connected to the freezer compartment temperature regulator 11a.
Connect to the side and return to normal operation.

According to this invention, the shelves on the floor of the quick-freezing chamber are made of a material with good thermal conductivity such as aluminum, which provides a heat dissipation fin effect and a rapid cooling effect on the food, and also allows the food to be frozen to The compressor motor and cold air forced circulation fan motor operate continuously until freezing is completed, allowing for faster freezing and continuous operation until freezing is completed.
There is no need to waste quality if continuous operation is interrupted during freezing or if continuous operation is continued even after freezing is completed. Furthermore, even during continuous operation, the refrigerator compartment is maintained at an appropriate temperature by the damper thermostat, making it possible to provide an excellent refrigerator with no waste.

[Brief explanation of drawings]

Figure 1 is a front view of a refrigerator incorporating this invention with the freezer compartment door removed, Figure 2 is a sectional view of Figure 1, and Figure 3 is an electrical circuit diagram showing one embodiment of this invention. . In the figure, 3 is a freezing chamber, 5 is a quick-freezing chamber, 13 is a temperature sensing part of a quick-freezing temperature controller, 7 is a shelf board, and 15 is a fan for forced cold air circulation.

Claims (1)

[Scope of utility model registration request] A refrigerator comprising a cooler for cooling the inside of the refrigerator, a freezing compartment, and a quick-freezing compartment provided in a part of the freezing compartment, and forcibly circulating the cooled air by a fan, wherein the quick-freezing Quick freezing involves fixing the temperature-sensing part of the quick-freezing temperature regulator to the shelf board that forms the floor of the room, and continuously operating the compressor motor and the drive motor of the fan until the temperature of the floor falls below the set temperature. In the indoor refrigerator, one of the contact portions 24a of the relay 24 and the freezer compartment temperature regulator 11a are connected in series to the cold air circulation fan motor and the compressor motor, which are connected in parallel, and one of the contact portions 24a of the relay 24 is The other side is connected in series with one contact section 13a and coil section 24b of the quick freezing temperature controller, forms a parallel circuit with the fan motor and the compressor motor, and is connected to the quick freezing operation switch 12.
a is connected in series with the other contact 13b of the quick freezing temperature controller, and is connected in parallel with the series circuit of the relay 24 and the freezer compartment temperature regulator 11a, and is connected to the quick freezing operation switch 12a and the quick freezing temperature. The contacts 13b of the regulator, the contacts 24a of the relay, and the contacts 13a of the quick-freezing temperature regulator are connected, and the shelf board on the floor of the quick-freezing chamber is made of thermally conductive material such as aluminum. A refrigerator with a quick-freezing chamber characterized by being constructed of high-quality materials.