JPH07208851A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent impairing of fresh retentivity in a vegetable chamber due to rising of a temperature of the chamber according to installing conditions in summer and to save electric charges due to a cooling cycle continuing state, i.e., execute labor-saving. CONSTITUTION:The refrigerator comprises a heat insulation box 17, a cold storage chamber 18, a deep freezing chamber 18, a vegetable chamber 20, a cooler 21 and a fan unit 23, a discharge duct 24 for the cold storage chamber, a return duct 27 for the storage chamber, a discharge duct 28 for the vegetable chamber, a return duct 40 for the vegetable chamber, a heat insulated partition plate 34, and a heat insulated partition plate 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a refrigerator compartment, a freezer compartment and a vegetable compartment, which are formed in this order from the top.

[0002]

2. Description of the Related Art In recent years, as the demand for frozen foods has increased, the freezer compartment has been used more frequently than the refrigerator compartment. The demand for refrigerators is increasing.

A conventional cooling method for each room of a refrigerator formed in the order of a refrigerating room, a freezing room and a vegetable room is described in JP-A-3-
There is one disclosed in Japanese Patent No. 267677.

Hereinafter, a method of cooling each room of a refrigerator having a refrigerating room, a freezing room, and a vegetable room formed in this order from the above will be described with reference to the drawings.

FIG. 4 is a perspective view showing a conventional refrigerator having a refrigerator compartment, a freezer compartment and a vegetable compartment, which are formed in this order from the top. In FIG. 4, 1 is a heat insulating box, 2 is a heat insulating box 1
A refrigerating room formed inside, 3 a freezing room, 4 a vegetable room, 5 a cooler arranged at the back of the freezing room 3, 7 a fan device for sending cold air cooled by the cooler 5, Reference numeral 8 denotes a refrigerating compartment discharge air passage for blowing cool air to the refrigerating compartment 2, and 9 denotes a vegetable compartment 3
A return air passage for a refrigerating compartment for blowing cold air into the room 10, 10 a return air passage for a vegetable compartment for returning the cool air blown to the vegetable compartment 4 to the cooler 5, and 11 a cooler for the cool air blown to the freezing compartment 3. Return air passage for the freezer compartment for returning to 5, and 12 for the refrigerating compartment
Is a cold air return port to the cold room, 13 is a cool air discharge port from the refrigerating compartment return air passage 8, 14 is a cool air return port to the freezer compartment return air passage 11, and 1516 is an adiabatic partition plate.

The cooling method of each room of the refrigerator having the above-mentioned structure, which is formed in order from the refrigerator room, the freezer room and the vegetable room, will be described below.

First, the cool air cooled by the cooler 5 is blown by the fan unit 7, a part of which is sent directly into the freezer compartment 3, and the sent cool air is returned from the freezer compartment return port 14 to the freezer compartment return air. The remaining cool air that is returned to the cooling chamber through the passage 11 is sent to the inside of the refrigerating chamber 2 through the refrigerating chamber discharge air passage 8 through the refrigerating chamber discharge air passage 8 and further to the refrigerating chamber return port 1.
From 2 is sent to the vegetable compartment 4 through the return air passage 9 for the refrigerator compartment,
The cold air sent into the vegetable compartment 4 is the return air passage 1 for the vegetable compartment.
It is returned to the cooling chamber through 0.

[0008]

However, in the above-mentioned conventional configuration, since the cold air is supplied to the vegetable compartment 4 through the refrigerating compartment 2, the refrigerating compartment must be provided with a considerably large air volume and speed on the side of the refrigerating compartment discharge air passage 8. Since the temperature in the return air duct 9 is high, there is a drawback that the temperature of the vegetable compartment 4 becomes higher than the target temperature depending on the summer conditions and installation conditions.

The present invention solves the conventional problems.
Vegetable room 4 always constant regardless of the environment throughout the four seasons
The purpose is to propose a new air duct structure that can protect the temperature inside the refrigerator.

[0010]

To achieve this object, a cooling method for each room of a refrigerator formed in the order of a refrigerator room, a freezer room, and a vegetable room from the top of the present invention is a cooling method for cooling each room. The cool air cooled in the container is circulated by a fan device, and the cool air is separated in the middle of the discharge air passage for the cold room from the cold air for cooling the cold room side and the cold air for cooling the vegetable room side, Separated cool air is a dedicated return air passage independently, that is, the cool air sent to the refrigerating compartment is returned to the cooler compartment via the refrigerating compartment return air passage, and the cool air sent to the vegetable compartment is It is configured to return to the cooler chamber through the vegetable chamber return air passage.

[0011]

The air to be returned from the refrigerating compartment to the cooler is once blown out from the refrigerating compartment return air duct into the vegetable compartment and then returned to the cooler through the vegetable compartment return duct, unlike the conventional refrigerator of the present invention. The method of cooling is to blow a part of the cool air into the vegetable compartment through the dedicated vegetable compartment outlet duct in the middle of the refrigerator compartment outlet duct, so if the temperature inside the vegetable compartment is high in the summer or due to installation conditions, etc. In addition, since the structure is such that the predetermined temperature can be easily drawn out without taking any special technical measures, the freshness is not impaired.

Further, unlike the conventional example, the cooling cycle does not become continuous under such conditions, so that the electricity cost of the refrigerator does not increase.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a refrigerator according to the present invention will be described below with reference to the drawings. It should be noted that the same components as those of the related art are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 1 is a view showing an air duct structure of a refrigerator according to a first embodiment of the present invention. In FIGS. 1 and 2, two heat-insulated partition plates 34 and 35 are installed in the heat insulating box 1, and the partition plates 34 and 35 allow the refrigerator compartment 18, the freezer compartment 19, and the vegetable compartment 20 to be installed from above. Are divided. A cooler chamber 22 is provided at the back of the freezing chamber 19, and a fan device 23 and a cooler 2 are provided in the cooler chamber 22.
1. The defrost heater 33 is arranged in order from the top, and the fan device 23 circulates the cool air cooled by the cooler 21. The circulation route will be described below. A part of the cool air blown by the fan device 23 is directly sent into the freezer compartment 19 through the freezer compartment outlet 31 and returned into the cooler compartment 22 through the freezer compartment return opening 32 as shown in FIG. .

The remaining cold air is discharged into the refrigerating compartment 2
In the middle of 4, it is divided into a refrigerator compartment and a vegetable compartment.

First, the cold air sent to the refrigerating compartment side will be described. The cool air sent to the refrigerating compartment side is sent from the cold air discharge port 25 for the refrigerating compartment into the refrigerating compartment 18, and the sent cool air is refrigerated. It is taken in from the room return port 26, guided to the refrigerating room return air passage 27, guided to the refrigerating room return air passage 27, and then returned to the cooler room 22 as it is.

On the other hand, the cool air sent to the vegetable compartment side is guided to the vegetable compartment discharge air passage 28 and sent to the inside of the vegetable compartment 20.
Further, the cool air sent into the vegetable compartment 20 is guided to the vegetable compartment return air passage 30 from the vegetable compartment return port 29 and then returns to the cooler compartment 22. It should be noted that the refrigerating compartment return air passage 27 and the vegetable compartment discharge air passage 28 are united between the partition plates 34 that are heat-insulated as shown in FIG. 1, and are covered with a heat insulating wall 36 as shown in FIG. As shown in FIG. 1, the box air passage is separated in the back wall of the freezer compartment 19, the return air passage 27 for the refrigerating compartment is in the cooler compartment 22, and the discharge air for the vegetable compartment is The path 28 is connected to the inside of the vegetable compartment 20.

As described above, in the refrigerator according to the present embodiment, the cold air after cooling the refrigerating compartment is not used for cooling the vegetable compartment as in the conventional example. Since the temperature of the vegetable compartment does not rise in the summer when the temperature rises, there is no concern about the set temperature, and because the sensor controls even in the winter when the outside temperature becomes low, there is no fear of overcooling.

That is, unlike the conventional example, the freshness of the vegetable compartment is not impaired and the electricity bill is not increased.

Further, since the returned cool air from the refrigerating compartment and the returning cool air from the vegetable compartment have almost the same temperature distribution, there is no possibility of uneven frost formation on the cooler even if they are returned to the cooler independently. Moreover, when the compressor is operated for a predetermined time, the defrosting heater located under the cooler is energized to perform defrosting, so that no frost remains on the cooler and there is no risk of impairing the cooling performance.

[0021]

As described above, according to the present invention, the refrigerating compartment and the vegetable compartment are provided with independent refrigerating compartment discharge air passages and vegetable compartment discharge air passages, respectively, to supply cool air. Moreover, since the temperature of the vegetable compartment does not rise, there is no risk of worrying about the set temperature, and there is no risk of overcooling because the sensor controls even in the winter when the outside air temperature is low. That is, this method has a constant temperature distribution in the refrigerator in any installation environment in all seasons compared to the conventional method of cooling the vegetable compartment with cool air after cooling the refrigerator compartment, so high-quality preservation is possible. It can be done and the electricity bill can be reduced.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of a refrigerator according to the present invention.

FIG. 3 is a combined view of the return air passage for the refrigerator compartment and the discharge air passage for the vegetable compartment according to the present invention.

FIG. 4 is a sectional view of a conventional refrigerator.

FIG. 5 is a sectional view of a conventional refrigerator.

[Explanation of symbols]

 17 Insulation Box 18 Refrigerating Room 19 Freezing Room 20 Vegetable Room 21 Cooler 23 Fan Device 24 Refrigerating Room Discharge Air Path 27 Refrigerating Room Return Air Path 28 Vegetable Room Discharge Air Path 30 Vegetable Room Return Air Path 34 Insulated Partition plate 35 Insulated partition plate

Claims (1)

[Claims] 1. A refrigerating compartment, a freezing compartment, and a vegetable compartment are formed in this order from the top by a partition plate that insulates the inside of an insulating box, and cold air cooled by a cooler to cool each of these compartments. Is circulated by a fan device, discharge cold air is separated into the refrigerating compartment side and the vegetable compartment side in the middle of the refrigerating compartment discharge air passage, and the cool air sent to the refrigerating compartment side is the refrigerating compartment. Through the inside of the chamber, returned to the cooler via the return air passage for the refrigerating room, while the cold air sent to the vegetable compartment side, after reaching the discharge air passage for the vegetable compartment, through the vegetable compartment, A refrigerator having a structure for returning to the cooler via a return air passage for a vegetable compartment.