JPH0777376A - Refrigerator - Google Patents

Abstract

PURPOSE:To suppress a temperature irregularity in a room and to enhance food preservation quality by providing a blower for forcibly ventilating cold air to a refrigerating chamber, a cold storage chamber and a low temperature chamber, and a second blower for forcibly circulating the air in the room into the low temperature chamber. CONSTITUTION:A refrigerator body has a refrigerating chamber 4, a cold storage chamber 5 and a low temperature chamber 24 partitioned from a top via partition walls 2, 3, and a drawer type vegetable chamber 25 provided at a lower part of the chamber 24. Cold air cooked by a cooler 8 is sequentially forcibly ventilated to the chambers 4, 5, 24, 25 by an operation of a blower 9. In this case, a second blower 30 for forcibly circulating is provided in an innermost part of the chamber 24, the air in the chamber 24 is discharged from a discharge port 31 into the room by an operation of the blower 30, circulated to the room, then forcibly circulated from a suction port 32 in an air duct for returning to an air return passage 33 to make the temperature in the room uniform. Thus, a large effect is obtained to hold quality of food required for freshness such as particularly perishable foods.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced ventilation type refrigerator provided with an independent low temperature room and vegetable room.

[0002]

2. Description of the Related Art Recent household refrigerators are provided with an independent low temperature room and an independent vegetable room, for example, JP-A-2-242.
An example is shown in Japanese Patent No. 069. Below, FIG.
Description will be given with reference to FIG.

Reference numeral 1 denotes a refrigerator main body, which is divided by partition walls 2 and 3 into a freezing compartment 4, a refrigerating compartment 5 and a low temperature compartment 6 from the top. Reference numeral 7 denotes a drawer-type vegetable compartment provided below the low temperature compartment 6. 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 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, 18 denotes a drawer type vegetable container provided in the vegetable chamber 7, and 19 denotes a moisture permeable means 20 (for example, a thin silicon film or the like). A lid plate that has a moisture permeable membrane and covers the upper surface of the vegetable container 18. Further, reference numeral 21 is a refrigeration cycle compressor.

In such a structure, the cool air cooled by the cooler 8 is forcedly ventilated by the blower 9 and sent into the refrigerating chamber 5 through the damper device 10 to be cooled to a predetermined temperature (for example, 4 ° C.). Further, for the low temperature chamber 6, the opening and closing of the damper of the damper device 11 is controlled by the temperature detected by the temperature detector 13, and a necessary amount of cool air is sent into the low temperature chamber 6 to cool it to a predetermined temperature (for example, -3 ° C). To be done.

[0008]

However, while the low temperature room is required to be able to store fresh food with good freshness, it is not easy to evenly feed cold air throughout the room, and it is necessary to store it for practical use. It is difficult to cope with changes in conditions such as the amount and arrangement of food, and as a result, the temperature unevenness in the room increases. In addition, measures against bacteria and food odor have not been taken, and there are problems of hygiene and odor of food.

In view of the above problems, it is an object of the present invention to provide a refrigerator having a low temperature room with high food storage quality by suppressing room temperature unevenness, sterilizing and deodorizing the room.

[0010]

In order to solve the above problems, the refrigerator of the present invention comprises a second blower for forcibly circulating the indoor air in the low temperature room.

Further, a sterilizing filter is provided in the air return passage to the second blower.

Furthermore, a deodorizing catalyst is provided in the air return passage to the second blower in addition to the sterilization filter.

[0013]

The refrigerator according to the present invention has the above-mentioned structure and thus has a second structure.
Due to the forced circulation action of the blower, the temperature inside the low temperature room is stabilized uniformly.

Further, when the air in the low temperature chamber passes through the air return passage, the bacteria contained in the air are sterilized by the sterilization filter.

Further, odor molecules emitted from the food stored in the room when the air in the low temperature room passes through the air return passage are adsorbed and decomposed by the deodorizing catalyst.

[0016]

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

Reference numeral 22 denotes a refrigerator main body, and an independent low temperature chamber 24 is provided below the partition wall 23. Reference numeral 26 is a metal (for example, aluminum) cooling plate provided on the top surface of the low temperature chamber 24, and 27 is formed in the partition wall 23 to guide cold air from the damper device 11 to the back surface of the cooling plate 26. It is an indirect cooling duct. Reference numeral 28 is a temperature detector for detecting the temperature inside the room to control opening / closing of the damper 11;
Is a pull-out cryogenic container.

Reference numeral 30 is a second blower for forced forced circulation in the room, which is provided on the inner surface of the low temperature chamber 24, 31 is a discharge port into the room, and 32 is a suction port from the room. Reference numeral 33 is an air return passage communicating from the suction port 32 to the second blower 30. Reference numeral 34 is a sterilization filter mounted in the cold air return passage near the suction port 32, and is composed of, for example, a soft foam material 35 coated with a silver-based antibacterial agent and a frame 37 having a vent hole 36. ing.

Further, 38 is a deodorizing catalyst mounted together with the sterilizing filter 34 in the air return passage 33 in the vicinity of the suction port 32, and is, for example, a manganese-based deodorizing catalyst having a low temperature activity and formed in a honeycomb shape. is there.

In such a structure, the temperature detector 28 detects the temperature in the low temperature chamber 24, and when the temperature exceeds the predetermined temperature, the damper of the damper device 11 is opened and the cool air from the cooler 8 is indirectly cooled by the blower 9. It is sent to the back surface of the cooling plate 26 via the duct 27. When the temperature detector 28 detects a temperature equal to or lower than the predetermined temperature, the cold air flow to the cold air plate 26 is stopped.
In this way, the cooling plate 26 is cooled, and the inside of the low temperature chamber 24 is indirectly cooled to a desired temperature by the radiation cooling action from the top surface.

Then, the second blower 30 is used to cool the cold room 24.
The air inside is discharged from the outlet 31 into the room, circulates inside the room, and is forcibly circulated in the air passage returning from the inlet 32 to the air return passage 33, so that the room temperature is uniformly stabilized, and especially fresh foods such as fresh food can be kept fresh. A great effect can be obtained in maintaining the quality of foods that are required.

The circulating air containing miscellaneous bacteria in the low temperature chamber 24 is taken in through the suction port 32 and the air return passage 33.
Since the bacteria are sterilized by passing through the sterilization filter 34 installed inside, the number of bacteria in the room is reduced, the room can be kept clean, and the deterioration of food quality can be prevented.

Further, the circulating air in the low temperature chamber 24 is taken in through the suction port 32 and passes through the deodorizing catalyst 38 mounted in the air return passage 33, so that the odorous components generated especially from fresh foods, such as meat and fish, are generated. Is adsorbed and decomposed by a low temperature active catalyst, so that the odor in the low temperature chamber 24 is deodorized. It also prevents odor transfer to other foods.

[0024]

As described above, according to the refrigerator of the present invention,
The following effects can be obtained.

By the forced circulation action of the second blower, the temperature inside the low temperature chamber is uniformly stabilized, and in particular, a great effect can be obtained in maintaining the quality of foods such as fresh foods that require freshness.

Further, since the air circulated in the low temperature room is disinfected by the disinfection filter installed in the air return passage, the number of bacteria in the room is reduced, the room is kept clean, and the quality of food is deteriorated. Can be prevented.

Further, the deodorizing catalyst installed in the air return passage can deodorize the indoor air containing the odorous components generated from fresh foods such as meat and fish, and prevent the odor from being transferred to other foods.

[Brief description of drawings]

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

FIG. 2 is a front view of the refrigerator shown in FIG.

FIG. 3 is an enlarged view of a main part of the refrigerator shown in FIG.

FIG. 4 is a vertical sectional view of a refrigerator showing another embodiment of the present invention.

5 is a front view of the refrigerator of FIG.

FIG. 6 is an enlarged view of a main part of the refrigerator shown in FIG.

FIG. 7 is a front view of a conventional refrigerator.

FIG. 8 is a vertical sectional view of a refrigerator showing a conventional example.

[Explanation of symbols]

 4 Freezer 5 Refrigerator 9 Blower 11 Damper device 24 Low greenhouse 28 Temperature detector 30 Second blower 33 Air return passage 34 Sterilization filter 38 Deodorizing catalyst

Claims (3)

[Claims] 1. A freezer compartment, a refrigerating compartment, a low temperature compartment, a blower for forcedly ventilating cool air into each compartment, a damper device for adjusting the amount of cool air to the low temperature compartment, and the damper provided in the low temperature compartment. A refrigerator comprising a temperature detector for controlling the device, and a second blower for forcedly circulating the air in the room in preparation for a part of the low temperature room. 2. The refrigerator according to claim 1, further comprising a sterilization filter in the air return passage of the second blower. 3. The refrigerator according to claim 2, wherein a deodorizing catalyst is added to the air return passage of the second blower.