JPH09318224A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict temperature rise when a damper is closed and permit the improvement of quality of preservation of foods by a method wherein cold storage agent is provided in a cooling duct which conducts cold air directly from a damper device provided on the ceiling surface of a low temperature chamber. SOLUTION: Cold storage agent 22 is provided in a ceiling surface discharging duct. Cold air, cooled by a cooler 8, is ventilated forcibly by a fan 9 to cool foods to a predetermined temperature by sending the cold air into a refrigerating chamber 5 through a damper device 11. The opening and closing of the damper of the damper device 11 is controlled by a temperature detected by a temperature detector 13 for a low temperature chamber 6 to store cold heat in the cold heat storage agent 22 when the damper device 11 is opened to send cold air thereinto and release the heat of the cold air, stored in the cold heat storage agent 22, in a low-temperature chamber vessel 17 when the damper device 11 is closed whereby the variety of temperatures in the upper and lower parts of the low temperature chamber is minimized. According to this method, cold air is showered from the upper part of the low temperature chamber even when the damper device is closed and the variety of temperature in the low temperature chamber can be minimized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold air forced circulation type refrigerator having a freezing compartment, a low temperature compartment and a plurality of refrigerating compartments.

[0002]

2. Description of the Related Art Conventionally, a refrigerator is provided with an independent low temperature room and an independent vegetable room, one example of which is shown in Japanese Patent Laid-Open No. 2-242069. The description will be given below with reference to FIGS. 3 and 4.

Reference numeral 1 is a refrigerator main body, and partition walls 2 and 3 partition a freezer compartment 4, a refrigerating compartment 5, a low temperature compartment 6 and a vegetable compartment 7 from the upper part. Reference numeral 8 is a cooler of the refrigeration cycle, and 9 is a blower for forcing the cool air cooled by the cooler 8 to the freezer compartment 4, the refrigerating compartment 5, the low temperature compartment 6, and the vegetable compartment 7.

Reference numeral 10 is a damper device for adjusting the amount of cold air flowing into the refrigerating chamber, and 11 is a damper device for adjusting the amount of cold air flowing into the low temperature chamber. Reference numeral 12 is a cooling duct that is provided in the partition wall 2 and that sends the cool air from the damper device 11 into the low temperature chamber 6. Further, 13 is a temperature detector which is provided in an upper part of the inside of the low temperature chamber 6 and controls the opening and closing of the damper of the damper device 11.

A bottom plate 14 of the low temperature chamber 6 is provided with a communication port 15 to the vegetable chamber 7. Reference numeral 16 is a return duct for returning the air that has cooled the low temperature chamber 6 and the vegetable chamber 7 to the cooler 8. Reference numeral 17 denotes a drawer type low temperature container provided in the low temperature chamber 6, and 18 denotes a drawer type vegetable container provided in the vegetable chamber 7. Moreover, 19 is a compressor of a refrigeration cycle.

In such a structure, the cool air cooled by the cooler 8 is forcibly ventilated by the blower 9 and sent into the refrigerating chamber 5 through the damper device 10 and cooled to a predetermined temperature (for example, 4 ° C.). . Further, the damper device 1 is controlled by the temperature detected by the temperature detector 13 with respect to the low temperature chamber 6.
The opening / closing of the damper 1 is controlled, and a required amount of cool air is sent into the low temperature chamber 6 to be cooled to a predetermined temperature (for example, -3 ° C).

[0007]

However, while the low temperature chamber is required to be able to store fresh food with good freshness, in such a structure, the required amount of cold air to be introduced is small because the low temperature chamber has a small capacity. There was a small amount of heat inflow from the refrigerating room in the upper and lower high temperature zones, which was a factor of temperature unevenness and temperature fluctuations in the room.

[0008] It is an object of the present invention to provide a refrigerator having a low temperature chamber which suppresses the temperature rise when the damper is closed and has a high food storage quality.

[0009]

In order to solve the above-mentioned problems, the refrigerator of the present invention is provided with a cold storage agent in a cooling duct for guiding cold air directly from a damper device provided on the top surface of a low temperature chamber.

Further, a cold storage agent provided with a cold air through hole is provided in the cooling duct.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention includes a low temperature chamber independent of a freezing chamber and a refrigerating chamber, a blower for forcedly ventilating cold air into each of the chambers, and A damper device for adjusting the amount of cold air, a discharge air passage provided on the top surface of the low temperature chamber, and a refrigerator including a cool storage agent provided in the discharge air passage. It has the effect of cooling the regenerator with cool air when it is open, and dropping it from the top surface of the cold room when the damper device is closed.

According to the second aspect of the present invention, the cool storage agent is provided with a uniform through hole, and the through hole serves as a discharge air passage.
The refrigerator described above has an effect of increasing the surface area of the regenerator and chilling cool air from the entire top surface of the low temperature chamber.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The same components as those in the related art are denoted by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described.

(Embodiment 1) The cold storage agent 22 provided in the ceiling discharge duct in FIG.

In such a structure, the cool air cooled by the cooler 8 is forcibly ventilated by the blower 9 and sent into the refrigerating chamber 5 through the damper device 10 and cooled to a predetermined temperature (for example, 4 ° C.). . Further, for the low temperature chamber 6, the opening / closing of the damper device 11 is controlled by the temperature detected by the temperature detector 13, and the damper device 11 is controlled.
When the damper device 11 is closed, the cold storage agent 22 is stored in the cold storage agent 22 when the cold air is sent in and the cold storage agent 22 is closed.
By radiating the cold air stored in the low temperature chamber 17 into the low temperature chamber, it is possible to minimize temperature unevenness above and below the low temperature chamber.

(Second Embodiment) In FIG. 2, reference numeral 23 is a cold storage agent having through holes uniformly opened.

Since the surface area of the cool storage agent 23 is increased in such a configuration, the cool storage time is shortened, and heat can be radiated from the cool storage agent from the entire top surface of the low temperature chamber, further improving food preservation quality.

[0018]

As described above, according to the present invention, the cool air is showered from above the low temperature chamber even when the damper device is closed, and the advantageous effect of minimizing the temperature unevenness in the low temperature chamber can be obtained. .

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a refrigerator showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of a refrigerator showing a second embodiment of the present invention.

FIG. 3 is a front view of a conventional refrigerator

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

[Explanation of symbols]

 4 Freezer 5 Refrigerator 6 Low greenhouse 11 Damper device 12 Cooling duct 17 Low temperature container 22 Cool storage agent 23 Cool storage agent with through port

Claims (2)

[Claims] 1. A low temperature chamber independent of a freezing chamber and a refrigerating chamber, a blower for forcedly ventilating cool air into each chamber, a damper device for adjusting the amount of cold air to the refrigerating chamber and the low temperature chamber, and a low temperature chamber A refrigerator comprising a discharge air passage provided on a top surface and a cool storage agent provided in the discharge air passage. 2. The refrigerator according to claim 1, wherein the cold storage agent is provided with a uniform through hole, and the through hole serves as a discharge air passage.