JPH10170127A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive refrigerator without employing any damper thermostat for a temperature sensor for a freezing chamber or the temperature regulation of a refrigerating chamber by a method wherein the operation of a compressor and a fan is controlled by detecting the temperature of the refrigerating chamber. SOLUTION: The operation of a compressor and a fan 4 is controlled by a refrigerating chamber temperature sensor 14 and the switching of a temperature in a freezing chamber 1 is effected by increasing and decreasing the opening area of inlet port of a refrigerating chamber returning duct 17 by a shutter 18 whereby respective chambers are retained at a desired temperature with an inexpensive specification without employing any temperature sensor for the freezing chamber or any damper thermostat for the refrigerating chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a refrigerator having a refrigerator compartment formed above a freezer compartment.

[0002]

2. Description of the Related Art A conventional refrigerator having a refrigerator compartment formed above a freezer compartment is disclosed in Japanese Patent Application Laid-Open No. 5-126453.

Hereinafter, the above-mentioned conventional refrigerator will be described with reference to FIGS. 7 and 8. FIG. In the figure, reference numeral 1 denotes a freezing room, which forms a refrigerating room 2 above. 3 is a cooler, 4 is a blower for the cool air cooled by the cooler 3 to each room, and cool air supplied to the cool room 2 is sent from the cool room discharge duct 5 to cool the room and then return the cool room return duct. 6. Return to the cooler 4 from 6. 7
Is a damper thermostat provided in the middle of the refrigerating room discharge duct 5, the opening area is changed by a refrigerating room temperature sensor 8, and the amount of cold air supplied from the refrigerating room discharge port 9 to the refrigerating room 2 is adjusted. Reference numeral 10 denotes a freezing room temperature sensor that detects the temperature of the freezing room 1 and controls the operation of the compressor 11. 12
Is a freezer compartment discharge port, and 13 is a freezer compartment suction port.

[0004] A method of cooling each room of the refrigerator configured as described above will be described. First, the freezer temperature sensor 1
When 0 is equal to or higher than the set temperature, the operation of the compressor 11 is started, and at the same time, the blower 4 is also rotated to send the cool air cooled by the cooler 3 to each room. And the freezer compartment outlet 1
The cool air supplied from 2 to the freezing room 1 cools the inside of the freezing room 1 and then returns to the cooler 3 from the freezing room suction port 13. On the other hand, the cold air that has passed through the refrigerator compartment discharge duct 5 is discharged to the refrigerator compartment 2 from the refrigerator compartment discharge port 9 after the flow rate is adjusted by the damper thermostat 7 whose degree of opening has been adjusted by the refrigerator compartment temperature sensor 8. After circulating in the chamber 2, it returns to the cooler 3 from the refrigerator return duct 6. When the temperature of the freezing room temperature sensor 10 becomes lower than the set temperature, the compressor 11 and the blower 4 are stopped.

[0005]

However, in the above-mentioned conventional configuration, the temperature of the freezer compartment 1 is detected to control the operation of the compressor 11 and the blower 4, and the damper thermostat 7 is used to regulate the temperature of the refrigerator compartment 2. Because of its use, it had high specifications in terms of cost.

SUMMARY OF THE INVENTION The present invention solves the conventional problems. By controlling the operation of a compressor and a blower by detecting the temperature of a refrigerator, a temperature sensor for the refrigerator and a damper thermostat for controlling the temperature of the refrigerator are used. An object is to provide an inexpensive refrigerator without using it.

[0007]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention is to control the operation of a compressor and a blower by a refrigerator temperature sensor and to increase or decrease the opening area at the inlet of a refrigerator return duct. Is provided.

Thus, when the temperature of the freezer compartment is to be lowered, when the temperature of the freezer compartment is desired to be lowered, the shutter is moved in the closing direction to reduce the amount of circulating cool air in the refrigerator compartment, and the operating time of the compressor and the blower is prolonged. When the desired freezing room temperature is ensured by this, on the other hand, when it is desired to raise the freezing room temperature, it moves in the opening direction of the shutter to increase the amount of circulating cool air in the refrigerating room and shortens the operation time of the compressor and the blower. Thus, a desired freezing room temperature can be secured.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a refrigerator, a refrigerator formed above the refrigerator, a cooler, a blower, a compressor, and detecting a change in temperature of the refrigerator to detect the temperature of the refrigerator. A refrigerator compartment temperature sensor for controlling the operation of the refrigerator, a refrigerator compartment discharge duct for circulating cool air sent from the blower into the refrigerator compartment, a refrigerator compartment return duct, and an inlet portion of the refrigerator compartment return duct. A shutter for increasing or decreasing the opening area is provided, and the operating time of the compressor is operated by adjusting the amount of circulating cool air in the refrigerator compartment by the shutter to adjust the temperature of the freezer compartment.

When it is desired to change the temperature of the freezer compartment, the operating time of the compressor is changed by moving the shutter to increase or decrease the opening area of the refrigerator return duct and increase or decrease the amount of circulating cool air in the refrigerator compartment. A desired freezing room temperature can be secured.

Further, a shutter for increasing / decreasing the amount of cold air circulating in the refrigerator compartment is provided in the middle of the refrigerator discharge duct.

When it is desired to change the temperature of the freezer compartment, the operation time of the compressor is changed by moving the shutter, increasing or decreasing the opening area of the discharge duct of the refrigerator compartment and increasing or decreasing the amount of circulating cool air in the refrigerator compartment. A desired freezing room temperature can be secured.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a refrigerator according to the present invention will be described below with reference to the drawings. The same components as those of the related art are denoted by the same reference numerals, and detailed description is omitted.

(Embodiment 1) FIG. 1 is a front view showing a state where a door of a refrigerator according to Embodiment 1 of the present invention is removed. FIG. 2 is a longitudinal sectional view of the refrigerator. FIG. 3 is a front view of a main part of the refrigerator.

In FIG. 1 to FIG. 3, reference numeral 14 denotes a refrigerator compartment temperature sensor which detects a change in the temperature of the refrigerator compartment 2 and
1 and the operation of the blower 4 are controlled. 15 is a refrigerator room 2
A refrigerator discharge duct for supplying cool air to
A refrigerating compartment discharge port 17 is a refrigerating compartment return duct for returning the cool air circulating in the refrigerating compartment 2 to the cooler 3, and a shutter 18 for increasing or decreasing an opening area is provided at an inlet portion thereof.

With respect to the refrigerator configured as described above,
The operation will be described below. When the temperature of the refrigerator compartment temperature sensor 14 becomes higher than the set temperature, the operation of the compressor 11 and the blower 4 is started, and the cool air cooled by the cooler 3 passes through the refrigerator compartment discharge duct 15 and is refrigerated from the refrigerator compartment outlet 16. Room 2
After being circulated in the refrigerator compartment 2, it returns from the refrigerator compartment return duct 17 to the cooler 3. When the temperature of the refrigerator temperature sensor 14 becomes equal to or lower than the set temperature, the operations of the compressor 11 and the blower 4 are stopped. On the other hand, the freezing room 1 has a compressor 11
During operation of the blower 4, cool air is sent from the freezing compartment discharge port 12, and after cooling the room, the cool air circulates from the freezing chamber suction port 13 to the cooler 3 to maintain a desired temperature.

That is, the temperature setting of the freezer compartment 1 is set so as to change depending on the length of operation time of the compressor 11 and the blower 4.

To lower the temperature of the freezer compartment 1, the shutter 18 is moved so that the opening area of the inlet of the refrigerating compartment return duct 17 is reduced, and the amount of circulating cold air in the refrigerating compartment 2 is reduced. . As a result, the operation time of the compressor 11 and the blower 4 becomes longer, and the amount of cold air supplied to the freezer compartment 1 increases, so that the temperature of the freezer compartment 1 becomes lower.

On the other hand, when it is desired to raise the temperature of the freezer compartment 1, the shutter 18 is moved so as to increase the opening area of the inlet of the refrigerating compartment return duct 17 to increase the amount of circulating cold air in the refrigerating compartment 2. As a result, the operation time of the compressor 11 and the blower 4 is shortened, and the amount of cold air supplied to the freezing compartment 1 is reduced, so that the temperature of the freezing compartment 1 is further increased.

As described above, in the refrigerator of this embodiment, the operation of the compressor 11 and the blower 4 is controlled by the refrigerator temperature sensor 14, and the opening area of the inlet of the refrigerator return duct 17 is increased or decreased by the shutter 18. In order to switch the temperature of the freezing room 1 by doing so, a temperature sensor for the freezing room,
Each room can be maintained at a desired temperature without using a damper thermostat for a refrigerator room.

(Embodiment 2) FIG. 4 is a front view showing a state where a door of a refrigerator according to Embodiment 2 of the present invention is removed. FIG. 5 is a longitudinal sectional view of the refrigerator. FIG. 6 is a sectional view of a main part of the refrigerator.

4 to 6, reference numeral 19 denotes a refrigerator compartment 2.
A refrigerator discharge duct for supplying cold air to
Reference numeral 21 denotes a refrigerator compartment return duct for returning cool air circulating in the refrigerator compartment 2 to the cooler 3. 22 is
This is a shutter for increasing or decreasing the opening area of the refrigerator compartment discharge duct 19 provided in the middle of the refrigerator compartment discharge duct 19.

Regarding the refrigerator configured as described above,
The operation will be described below. If the temperature of the refrigerator compartment temperature sensor 14 becomes higher than the set temperature, the operation of the compressor 11 and the blower 4 is started, and the cool air cooled by the cooler 3 passes through the refrigerator compartment discharge duct 19 and is refrigerated from the refrigerator compartment outlet 20. Room 2
After being circulated in the refrigerator compartment 2, it returns to the cooler 3 from the refrigerator compartment return duct 21. When the temperature of the refrigerator temperature sensor 14 becomes equal to or lower than the set temperature, the operations of the compressor 11 and the blower 4 are stopped. On the other hand, the freezing room 1 has a compressor 11
During operation of the blower 4, cool air is sent from the freezing compartment discharge port 12, and after cooling the room, the cool air circulates from the freezing chamber suction port 13 to the cooler 3 to maintain a desired temperature.

That is, the temperature setting of the freezer compartment 1 is set so as to change according to the length of operation time of the compressor 11 and the blower 4.

To reduce the temperature of the freezer compartment 1, the shutter 22 is moved so that the opening area of the refrigerating compartment discharge duct 19 is reduced, and the amount of circulating cool air in the refrigerating compartment 2 is reduced. As a result, the operation time of the compressor 11 and the blower 4 becomes longer, and the amount of cool air supplied to the freezer compartment 1 increases, so that the temperature of the freezer compartment 1 becomes lower.

On the other hand, when it is desired to raise the temperature of the freezer compartment 1, the shutter 22 is moved so that the opening area of the refrigerator compartment discharge duct 19 becomes larger, and the amount of circulating cold air in the refrigerator compartment 2 is increased. As a result, the operation time of the compressor 11 and the blower 4 is shortened, and the amount of cold air supplied to the freezing compartment 1 is reduced, so that the temperature of the freezing compartment 1 is further increased.

As described above, in the refrigerator of this embodiment, the operation of the compressor 11 and the blower 4 is controlled by the refrigerator temperature sensor 14, and the opening area of the refrigerator duct 19 is increased or decreased by the shutter 22. Since the temperature of the room 1 is switched, each room can be maintained at a desired temperature without using a temperature sensor for a freezing room or a damper thermostat for a refrigerator.

[0028]

As described above, according to the present invention, the operation of the compressor and the blower is controlled by the refrigerator temperature sensor, and the opening area of the inlet of the refrigerator return duct is increased or decreased by the shutter to reduce the temperature of the freezer. Since the temperature is switched, each room can be maintained at a desired temperature with inexpensive specifications without using a temperature sensor for a freezing room or a damper thermostat for a refrigerator.

In addition, the operation of the compressor and the blower is controlled by the temperature sensor of the refrigerator, and the temperature of the refrigerator is switched by increasing or decreasing the opening area of the discharge duct of the refrigerator by the shutter. In addition, each room can be maintained at a desired temperature with a low-cost specification without using a damper thermostat for a refrigerator, and the temperature of each room can be accurately adjusted by the pressure of cold air from the protruding duct side.

[Brief description of the drawings]

FIG. 1 is a front view showing a refrigerator according to a first embodiment of the present invention with a door removed.

FIG. 2 is a longitudinal sectional view of the refrigerator of the embodiment.

FIG. 3 is a front view of a main part of the refrigerator of the embodiment.

FIG. 4 is a front view showing a refrigerator according to a second embodiment of the present invention with a door removed.

FIG. 5 is a longitudinal sectional view of the refrigerator of the embodiment.

FIG. 6 is a cross-sectional view of a main part of the refrigerator of the embodiment.

FIG. 7 is a front view showing a state where a door of a conventional refrigerator is removed.

FIG. 8 is a longitudinal sectional view of a conventional refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Freezer compartment 2 Refrigerator compartment 3 Cooler 4 Blower 11 Compressor 14 Refrigerator compartment temperature sensor 15, 19 Refrigerator compartment discharge duct 17, 21 Refrigerator compartment return duct 18, 22 Shutter

Claims (2)

[Claims] 1. A freezer compartment, a refrigerator compartment formed above the freezer compartment, a cooler, a blower, a compressor, and a temperature change in the refrigerator compartment are detected to control the operation of the compressor. A refrigerator compartment temperature sensor, and a refrigerator compartment discharge duct for circulating cool air sent from the blower into the refrigerator compartment,
A refrigerating compartment return duct, and a shutter for increasing or decreasing an opening area of an inlet portion of the refrigerating compartment return duct, and operating the compressor operating time by increasing or decreasing the amount of circulating cool air in the refrigerating compartment by the shutter; Refrigerator characterized by controlling room temperature. 2. A freezer compartment, a refrigerator compartment formed above the freezer compartment, a cooler, a blower, a compressor, and a temperature change in the refrigerator compartment are detected to control the operation of the compressor. A refrigerator compartment temperature sensor, and a refrigerator compartment discharge duct for circulating cool air sent from the blower into the refrigerator compartment,
A refrigerator return duct, and a shutter provided in the middle of the refrigerator compartment discharge duct for increasing or decreasing the opening area of the refrigerator compartment discharge duct, and operating the compressor by increasing or decreasing the amount of cool air circulation in the refrigerator compartment by the shutter. Manipulate time,
A refrigerator, wherein the temperature of the freezer compartment is adjusted.