JPH0593568A - Refrigerator - Google Patents

Abstract

PURPOSE:To provide stable temperatures in a freezing chamber and a refrigeration chamber by a method wherein a refrigerator is provided with an inner lamp, a switch for controlling the refrigeration lamp and the second temperature control device connected in parallel with the switch. CONSTITUTION:The second temperature control device 11 is connected in parallel with a switch 8 and connected in series with an inner lamp 7. The second temperature control device 11 is turned ON when a refrigeration chamber 5 shows 0 deg.C or lower, for example and then the device 11 is turned OFF when the refrigeration chamber 5 shows +7 deg.C. Accordingly, when the refrigeration chamber 5 shows 0 deg.C or lower under a low surrounding air temperature, the second temperature control device 11 is operated to allow inner lamp 7 to generate heat so as to cause the refrigeration chamber 5 to show appropriate temperature and at the same time an operating time of a freezer 2 is increased and the freezing chamber 3 is further cooled. With such an arrangement, both refrigeration chamber 5 and the freezing chamber 3 are accommodated at their most suitable temperatures. That is, in place of an accommodating heater, a heat radiation source of the inner lamp 7 is utilized. In addition, since the inner lamp 7 is arranged in the freezing chamber at the refrigeration chamber, any disturbance in temperature at the refrigeration chamber 5 and any dew formation at the upper surface can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to temperature control in a refrigerator for general household use.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 51-53508, in the temperature control of a two-temperature type refrigerator / freezer, when the outside air temperature is low (for example, 15 ° C. or lower),
An internal temperature compensating heater for correcting overcooling of the refrigerating room and blunt cooling of the freezing room is attached to optimize the internal temperature.

A conventional refrigerator as described above will be described below with reference to the drawings. FIG. 7 is a partial sectional view of a conventional refrigerator, and FIG. 8 is a control circuit diagram of a conventional refrigerator body.

Reference numeral 1 is a refrigerator main body, 2 is a refrigerator, 3 is a freezer compartment, 4 is a first cooler of the freezer compartment, 5 is a refrigerating compartment, and 6 is a second cooler of the refrigerating compartment 5. 7 is an interior light, and a door 7a
When is opened / closed, it is turned on / off by the switch 8. 9
Is a compensating heater, which is connected in parallel with the first temperature control device 10 attached to the refrigerating compartment 5 and is arranged on the back surface of the refrigerating compartment 5 of the main body 1.

In the above structure, the compensation heater 9
Is connected in parallel to the first temperature control device 10 in a circuit manner, so that it is energized when the first temperature control device 10 is OFF.

When the outside temperature is low, the operating time of the refrigerator 2 is short and the temperature of the freezer compartment 3 is high. However, the compensating heater 9 prevents overcooling of the refrigerating compartment 5 while increasing the cooling operation rate to increase the freezing compartments 3.
It is possible to optimize the temperature of the refrigerator compartment 5.

[0007]

However, in the above-mentioned configuration, there is a problem that the room temperature fluctuations of the refrigerating room 5 and the freezing room 3 are large, and it is difficult to maintain room temperature stability only by controlling the ON / OFF of the refrigerator 2. ..

The present invention has been made in view of the above problems, is structurally simple, uses conventional functional components, and is a refrigerator in which the room temperature of the freezing compartment 3 and the refrigerating compartment 5 is stabilized at low outside air temperature. Is provided.

[0009]

In order to solve the above-mentioned problems, the refrigerator of the present invention eliminates the connection of the compensating heater in parallel with the first temperature control device and controls the heat radiation source of the interior light by the second control. The temperature control device is intended to stabilize the inside of the refrigerator.

Further, the internal light is provided on the freezing room side of the refrigerating room. Further, the second temperature control device is provided near the refrigerator outside the refrigerator.

[0011]

According to the present invention, the heat radiation source of the interior light can be used in place of the compensating heater on the back of the wall surface of the refrigerating room by the above-mentioned structure.

Further, since the interior light is provided in the freezing compartment on the side of the refrigerating compartment, temperature unevenness in the refrigerating compartment and dew condensation on the upper surface can be prevented.

Further, since the second temperature control device is provided outside the refrigerator, the inside temperature control by the outside air temperature can be simplified.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. It should be noted that the same components as those of the related art are denoted by the same reference numerals and detailed description thereof will be omitted.

Reference numeral 11 is a second temperature control device connected in parallel with the switch 8 and connected in series with the inside lamp 7. Further, the second temperature control device 11 has a function of turning on when the refrigerating chamber 5 becomes 0 ° C. or lower, for example, and turning off when it becomes + 7 ° C.

Therefore, when the temperature of the refrigerating chamber 55 at low outside air temperature becomes 0 ° C. or less, the second temperature control device 9 operates to heat the inside lamp 7 to heat the refrigerating chamber 5 to an appropriate temperature and the operating time of the refrigerator 2 increases. Then, the freezer compartment 3 is further cooled.

As a result, both the refrigerating room 4 and the freezing room 3 are compensated for the optimum temperature. Further, as another embodiment, FIG.
4 to FIG. 4 will be described. The same components as those in the first embodiment and the conventional one are designated by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 7 denotes an interior light, which is provided on the boundary between the freezing compartment 3 and the refrigerating compartment 5 and above the refrigerating compartment 5. Reference numeral 11 is a second temperature control device provided on the back surface of the refrigerating chamber 5.

With this structure, dew condensation on the upper surface of the refrigerating compartment 5 is prevented by the supercooling of the refrigerating compartment 5 and the blunt cooling of the freezing compartment 3 and the light emitted from the interior lamp 7 on the upper part of the refrigerating compartment 5.

Still another embodiment will be described with reference to FIGS. The same components as those in the first embodiment and the conventional one are designated by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 11 denotes a second temperature control device which is connected in parallel with the switch 8 and is connected in series with the interior lamp 7, and is located at the lower rear portion of the main body 1.

With this configuration, the outside air temperature near the refrigerator 2 can be detected by the intake hole, and the temperature of the refrigerating chamber 5 and the freezing chamber 3 can be controlled in correlation with the cooling capacity. Can be brought to an appropriate temperature.

[0023]

As described above, according to the present invention, the compensating heater is not connected in parallel with the first temperature control device, and the interior of the interior is stabilized by controlling the heat radiation source of only the interior light by the second temperature control device. Therefore, heat exchange with the cold air in the refrigerator is also performed by radiation, and the sub-function of the existing functional parts can prevent overcooling of the refrigerator, so that the structure is simplified.

Further, since the inside of the refrigerator can be heated while being cooled, the accuracy of temperature control is improved. Therefore, the present invention provides a refrigerator in which overcooling of the refrigerator at low outside air temperature is corrected, blunt cooling of the freezer caused by a reduction in the operating rate of the refrigerator is eliminated, and the room temperature in both refrigerators is stabilized.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a refrigerator main body showing an embodiment of the present invention.

FIG. 2 is a control circuit diagram of FIG.

FIG. 3 is a partial sectional view of a main part of a refrigerator showing another embodiment of the present invention.

FIG. 4 is a control circuit diagram of FIG.

FIG. 5 is a partial cross-sectional view of a refrigerator main body showing another embodiment of the present invention.

FIG. 6 is a control circuit diagram of FIG.

FIG. 7 is a partial cross-sectional view of a conventional refrigerator body.

FIG. 8 is a control circuit diagram of a conventional refrigerator body.

[Explanation of symbols]

 2 Refrigerator 3 Freezing room 4 1st cooler 5 Refrigerating room 6 2nd cooler 7 Internal light 8 Switch 10 1st temperature control apparatus 11 2nd temperature control apparatus

Claims (3)

[Claims] 1. A first cooler and a second cooler connected to a refrigerator, an independent refrigerating compartment and a freezing compartment for each of the coolers, and a first temperature control device in the refrigerating compartment, An internal light,
A refrigerator comprising a switch for controlling the interior light and a second temperature control device connected in parallel with the switch. 2. The refrigerator according to claim 1, wherein the interior light is arranged on the freezing compartment side of the refrigerating compartment. 3. The refrigerator according to claim 1, wherein the second temperature control device is arranged near the outdoor refrigerator.