JPS58142177A - 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 quick freezing in the freezer compartment and rapid refrigeration in the refrigerator compartment in a forced draft two-temperature refrigerator that is equipped with a freezer compartment and a refrigerator compartment and uses an electric blower to circulate cold air inside the refrigerator. It is.

In a typical two-temperature refrigerator, the compressor and electric blower are controlled by a thermostat that senses the temperature of the freezer compartment, thereby keeping the freezer compartment at a desired low temperature, while the electric blower adjusts the cold air in the refrigerator compartment. The desired temperature is maintained by a damper thermostat. It is known that for quick freezing and quick refrigeration in such refrigerators, the thermostat is short-circuited and the compressor and electric blower are continuously energized. Since the cold air generated by the blower also flows to the refrigerator compartment, the desired amount of air to the freezer compartment is not necessarily large, so it cannot be called rapid freezing. As a means of using a refrigerator, there are still cases where you want to perform rapid cooling of the refrigerator compartment as well as phase freezing of the freezer compartment.As mentioned above, if you simply operate the compressor or electric blower continuously, the damper will turn off when the refrigerator compartment reaches a predetermined low temperature. Because the damper of the thermostat closes, the above objective cannot be achieved with the second method.

In view of the above points, the present invention is designed to achieve rapid freezing of a freezer compartment and rapid cooling of a refrigerator compartment by extremely simple means.One embodiment thereof will be described below with reference to the accompanying drawings.

In the figure, 1 is the refrigerator main body, and a compressor 2.
Each of them is equipped with a condenser 3 on the back.

Inside the main body 1, a freezing compartment 7. It is divided into 802 cold storage rooms at the bottom. 9 is a thermostat placed in the freezer compartment 7, which opens and closes depending on the temperature of the freezer compartment. It controls the electric blower 5. Reference numeral 10 denotes a damper thermostat disposed at the cold air outlet of the refrigerator compartment 8, which controls opening and closing of the damper according to the temperature of the refrigerator compartment, thereby maintaining the temperature of the refrigerator compartment at a desired temperature. This damper thermostat 10 is provided with temperature compensation heaters 11a and 11b for compensating the operation of the damper thermostat. Temperature compensation heaters 11a, 11b←[Small capacity (low heat generation) heater 1 that is energized 7' during normal operation
1a, a refrigerating chamber 8, which will be described later, and a large capacity (large calorific value) heater 11b that can be energized during quick cooling. Attached to the casing of Mostano i 10;, 12Jl: Rapid freezing.

This is a timer device that operates during refrigeration, and consists of a quick cooling switch 13 that is manually operated and returns automatically, and a timer drive electric motor 14 that is driven by this switch 13 and returns this switch 13 after a predetermined period of time has elapsed. has been done. The switch 13 is a two-circuit type switch having a contact piece 13a for stopping power supply to the temperature compensation heater 11a and for supplying power to the timer drive motor 14, and a contact piece 13b for short-circuiting the thermostat 9. are doing.

The switch 16 is a switch that selects and switches the temperature compensation heaters 11a and 11b, and during normal operation, that is, when the rapid cooling switch 13 is not operated, the solenoid 15a is always set to a small capacity temperature compensation heater. Each contact piece 15b, 16c is positioned at a position where electricity is applied to 11a, and when the rapid cooling switch 13 is operated, the joints 15b, 15c can be manually switched to any position. In other words, by operating the rapid cooling switch 13, when there is no current, only the small capacity temperature compensation heater 11a is energized, and the switch 13 is connected to contact a.
(It is possible to stop energizing the slightly operated heater 11a, or manually selectively switch to the weakly operated heater 11b.

The above-mentioned components are connected by wiring as shown in FIG. Briefly, the compressor 2° electric blower 6 is connected to a power source via a thermostat 9, and the thermostat 9 is wired to be short-circuitable at the contact piece 13b of the rapid cooling switch 13.

The small capacity temperature compensation heater 11a is a contact piece 13a.

The solenoid 15a of the switch 16 is connected to the power supply via the normally closed contact of the contact piece 15b, and the solenoid 15a of the switch 16 is connected to the quick cooling switch 13.
It is connected to a power source via a contact piece 13a so that it is energized when not in operation. The large-capacity temperature compensation heater 11b is connected between the power sources via the normally open contact of the contact piece 13a of the rapid cooling switch 13 and the normally open contact of the contact piece 15c.

Next, the operation in the above configuration will be explained.

(1) During normal operation, the temperature of the compressor 2 is controlled by the thermostat 9 that senses the temperature of the freezer compartment 7. The electric blower 6 is both operated and stopped to maintain the inside of the freezer compartment 7 at a desired low temperature. The cold storage room 8 is temperature-compensated by a damper thermostat 1o energized by a small-capacity temperature-compensating heater 11a, and the required amount of cold air is controlled by opening and closing the damper to maintain it at a desired low temperature.

(11) If you want to quickly freeze the freezer compartment 7, operate the quick cooling switch 13 to the contact a side, and turn both contact pieces 13a.

13b, the thermostat 9 is shorted and the compressor 2. The electric blower 6 is continuously energized.

At the same time, since the switch 16 is not operated, the power supply to the small-capacity temperature compensation heater 11a is stopped, and the opening degree of the damper of the damper thermostat 1o is forcibly kept small, and the supply of cold air to the refrigerator compartment 8 is reduced. be lost. Therefore, most of the cold air from the electric blower 5 is sent into the freezer compartment 7, making it possible to quickly freeze the freezer compartment 7. At the same time, the timer drive electric motor 14 is also energized to start accumulating the quick freezing time, and when a predetermined period of time has elapsed, the switch 13 is forcibly reset, and the quick freezing is completed and the above (1)
) returns to normal operation.

(Aspect) If you want to quickly refrigerate the refrigerator compartment 8 while rapidly freezing the freezer compartment 7, then after operating the quick cooling switch 13, manually operate the switch 16. In other words, switch 13
is closed, the contacts 16b and 16C of the switch 15
can also be operated manually, and by this operation, the power supply to the small capacity hot water temperature compensation heater 11a is switched from being energized to the large capacity hot water temperature compensation heater 11b to being energized. Therefore, the damper thermostat 1o is heated more than in normal operation, and as a result, the opening degree of the damper becomes larger, and the amount of cold air supplied to the refrigerator compartment 8 increases. Therefore, the cold air is continuously sent not only to the freezer compartment 7 but also to the refrigerator compartment 8, so that the refrigerator compartment 8 can be rapidly refrigerated.

After the quick cooling of the refrigerator compartment 8 is also forced into operation for a predetermined period of time by the timer device 12, the switch 13 is reset, so the solenoid 15a is energized and the contact piece 15b of the switch 16 is turned on.
, 15C are also forcibly returned to their original states, returning to the normal cooling operation described in (1) above.

In this way, the compressor 2. When the electric blower 5 is forcibly energized, the 711 Tsukihiko compensation heater 11a of the damper thermostat 10
, 11b can be switched to stop and correct the power supply, and the effective name and quick freezing of the freezer compartment 7 is 11 functions; conversely, by increasing the calorific value, the rapid freezing of the refrigerator compartment 8 is possible. '; Storehouses are also possible.

In the above embodiment, the contact piece 13 of the rapid cooling switch 13
The configuration is such that the small-capacity temperature-compensating heater 11a is de-energized by closing a, but as shown by the broken line in FIG. A small hot water temperature compensating heater 11c may be connected to suppress the opening degree of the damper of the damper thermostat 1o at the time of switching.

As is clear from the above explanation, the present invention provides a temperature compensation heater for the damper thermostat of the refrigerator compartment, and when the thermostat is short-circuited, the IF, By combining one or more temperature-compensated heaters with a larger capacity, rapid freezing can be achieved more quickly and efficiently than in the conventional case when switching to a smaller capacity or energization than normal, and on the other hand, when switching to a larger capacity than normal. In this way, it is possible to quickly perform rapid refrigeration.In this way, it is possible to select and provide an efficient rapid freezing method and rapid refrigeration method for a forced draft type refrigerator-freezer with an extremely simple configuration and inexpensive means. is possible and practical.”
The second effect is also high.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a refrigerator according to an embodiment of the present invention, and FIG. 2 is a schematic electrical circuit diagram of the refrigerator. 2...Compressor, 6...Electric blower, 9
...Thermostat, 10 ... Damper thermostat, 11a, 11b ... Temperature compensation heater, 13 ... Rapid cooling switch (switch)
, 15...switch. Name of agent: Patent attorney Toshio Nakao and 1 other person Tsuta 1
figure/

Claims (1)

[Claims] A freezer compartment and a refrigerator compartment, an electric blower that circulates cold air to these compartments, a thermostand that controls the operation of a compressor and the electric blower, a damper thermostat that controls the amount of cold air to the refrigerator compartment, and the damper thermostat. By compensating the operating characteristics of multiple types of temperature compensation heaters with different capacities, and switching the energized heater from a large capacity one to a small capacity one among these multiple types of temperature compensation heaters, or stopping energization. At the same time, the refrigerator includes a switch that short-circuits the thermostand, and a switch that switches to a temperature-compensated heater having a larger capacity than the temperature-compensated heater that is energized during normal operation when the switch is closed.