JPS60101468A - 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 Field of the Invention The present invention relates to a damper device for controlling the volume of cold air discharged into a refrigerator compartment, for example in a refrigerator.

Structure of a conventional example and its problems A refrigerator equipped with a conventional damper device is shown in FIG. In the figure, 1 is a refrigerator main body, 2 is a freezer compartment, 3 is a refrigerator compartment, and 4 is a cooler disposed in a compartment 3a between the freezer compartment 2 and the refrigerator compartment 3. 5 is a small blower that forcibly blows cold air produced by the cooler 4 to the freezer compartment 2 and the refrigerator compartment 3. 6
is a duct that guides cold air blown from the small blower 6 to the freezer compartment 2 and the refrigerator compartment 3. 7 is a damper that manually adjusts the amount of cold air that has passed through the duct 6, and the cold air passes through the air path 8 and flows into the refrigerator compartment 3. The air that has undergone heat exchange within the refrigerator passes through the suction port 9 and returns to the cooler 4 again.

10 is a thermostat that detects the temperature of the refrigerator compartment 3 and controls the operation of the compressor 1-1. 12 is a net shelf on which food is placed.

In the above configuration, the cold air produced by the cooler 4 is sent to the blower 5
is forcibly fed into the duct 6. Then, the air is introduced into the refrigerator compartment 3 via a manual damper 7, guided to an air path 8, and discharged into the refrigerator compartment 3. The thermostat 10 detects the temperature inside the refrigerator compartment 3 and controls the operation of the compressor 11.

However, in a low outside temperature range, the amount of heat absorbed into the refrigerator compartment 3 decreases, so the operating rate of the compressor 11 decreases and the temperature of the freezer compartment 2 increases. FIG. 2 shows the relationship between the outside temperature, the inside temperature, and the operating rate when the thermostat 10 and manual damper 7 are fixed.

Purpose of the Invention Therefore, the present invention guides more cold air from the cooler to the freezer compartment when the outside temperature is low, simultaneously reduces the air volume into the refrigerator compartment, increases the operating rate of the compressor, and as a result lowers the temperature of the freezer compartment. intended to lower it.

Structure of the Invention To achieve this object, the present invention provides an auxiliary damper that opens and closes like a solenoid in the air passage located upstream of the manual damper, and when the outside temperature is low, the auxiliary damper opens and closes the air passage. By closing it, the amount of air flowing into the freezer compartment is increased, and the operating rate of the compressor is also increased.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 6. Parts that are the same as those in the conventional example are given the same numbers and explanations are omitted, and only the different points will be explained.
A sub-damper installed inside the duct θ that opens and closes a part of the duct 6 (for example, about half of the cross section of the air passage)
It is supported by a hinge portion 14 that extends further. A spring 15 is attached to the other end 14' of the sub-damper 13, and the other end of the spring is fixed to the duct wall 6'. On the other hand, 16 is a solenoid fixed to the duct wall, and the iron core 17 is connected to the sub-damper 13. FIG. 3 shows the state in which the solenoid 16 is not energized,
FIG. 4 shows the state in which the solenoid 16 is energized. The solenoid 160 energization command is made by connecting a bimetal 19 that turns on at temperatures below 18°C in series with the solenoid 16, as shown in FIG. 6, and detecting the ambient temperature (outside air temperature) in which the refrigerator 1 is placed. This is done by installing it at a location.

In this configuration, when the outside temperature is low, the bimetal 19 is turned on and the solenoid 16 is energized. Then duct 6
The actual cross-sectional area of the air passage within the area will be approximately half. Therefore, the air volume from the cooler 4 decreases with respect to the refrigerator compartment 3 and increases with respect to the freezer compartment 2. Therefore, cold room 3
By reducing the amount of air flowing into the freezer, the degree of cooling is reduced and the operating rate of the compressor 11 is increased, making it possible to obtain a predetermined freezer compartment temperature even when the outside air temperature is low. Figure 5 shows the outside air temperature when the thermostat and main damper are fixed,
Effects of the Invention Showing the Relationship Between Internal Temperature and Operation RateAs is clear from the above description, the present invention provides a main door that is manually opened and closed in the duct, and a main door that is opened and closed manually in the duct, and a solenoid that controls the operation of the duct. It is equipped with an auxiliary damper that opens and closes a part of the
The solenoid is energized and the auxiliary damper partially closes the air passage, increasing the amount of air flowing into the stock freezing compartment and reducing the amount of noise flowing into the refrigerator compartment, increasing the operating rate of the compressor.
As a result, the effect of lowering the temperature of the freezer compartment is 110.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional refrigerator, Figure 2 is a diagram of the relationship between outside temperature, internal temperature, and operating rate in a conventional refrigerator.
FIG. 3 is a sectional view of a main part showing an embodiment of the present invention, and shows the sub-damper when it is fully opened. Fig. 4 is a sectional view of the sub-damper as above when fully closed, Fig. 5 is a view corresponding to Fig. 2 in the present invention,
FIG. 6 is an electrical circuit diagram. 6...Duct, 16...Solenoid,
3... Refrigerator room, 2... Freezer room. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 5 Figure 6

Claims (1)

[Claims] A compressor that has a refrigerator compartment and a freezer compartment and whose operation is controlled based on the temperature of the refrigerator compartment, a main damper that manually opens and closes a duct that sends cold air to the refrigerator compartment, and a compressor that is located upstream of the main damper and that A refrigerator comprising a damper device having a sub-damper that partially opens and closes, and a solenoid that closes the sub-damper when the outside temperature is low.