JPS62153679A - Deodorizing device for refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a deodorizing device for a refrigerator, and particularly to a deodorizing device for a refrigerator suitable for circulating cold air.

[Prior art]

Refrigerators store a variety of foods, so they are filled with food odors. In order to remove this odor, the user should
I keep a case of deodorizer made of granular activated carbon in a corner of my refrigerator.

However, since the deodorizing agent is installed in the refrigerator compartment, the internal volume of the refrigerator compartment is reduced by the size of the deodorizing agent. Furthermore, since such a deodorizer is placed in one corner of the refrigerator compartment, it cannot be said that all of the cold air circulating within the refrigerator compartment passes through the deodorizer.

Therefore, the deodorizing effect could not be said to be sufficient.

As a means to solve such problems, Jitsukai Sho s3-+2
As shown in Publication No. 7365.

A deodorizing device i! is installed in a part of the cold air intake passage from the refrigerator compartment, which is installed in the insulated wall that separates the freezer compartment and refrigerator compartment. There is a refrigerator to install.

However, such a deodorizing device for a refrigerator has the following drawbacks: When the cooling operation of the refrigerator is stopped, the cold air from the cooler flows back through the suction passage toward the refrigerator compartment.
There are problems in that the deodorizing agent in the deodorizing device freezes, which impairs the deodorizing effect, and the ventilation of the suction passage becomes poor, making it impossible to circulate cold air to the refrigerator compartment, making it impossible to cool the refrigerator compartment.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a deodorizing device for a refrigerator in which cold air flowing back from the freezer compartment can be circulated avoiding the deodorizing agent.

[Summary of the invention]

In order to achieve such an object, the present invention provides an insulating wall that partitions a freezer compartment and a refrigerating compartment, a suction passage for cold air from the refrigerating compartment provided in the insulating wall, and a deodorizing device attached to the suction passage. In the deodorizing device for a refrigerator, the deodorizing device is provided with a bypass passage that communicates the refrigerator compartment with the suction passage.

[Embodiments of the invention]

Hereinafter, details of the present invention will be explained with reference to an embodiment shown in the drawings.

FIG. 1 is a cross-sectional view of a main part of the refrigerator, and FIG. 2 is a cross-sectional view of a main part of a compartment heat-insulating wall. In the figure, 1 is a refrigerator main body, and 2.3 is a freezing compartment and a refrigerating compartment formed inside the refrigerator main body 1. 4 is an insulating wall that partitions the freezer compartment 2 and the refrigerator compartment 3; 5 is a cooler installed at the back of the freezer compartment 2; 6 is a cooler that supplies the cold air cooled by the cooler 5 to the freezer compartment 2 and the refrigerator compartment 3. A blower for forced circulation, 7 is a cooling room 8 where the cooler 5 etc. mentioned above are installed.
This is a fan guard installed in front of the 9 is freezer compartment 2
10 is a suction passage that returns cold air inside the refrigerator compartment 3 to the cooler 5.

+Qa is the entrance space of the suction passage 10 whose lower part is open;
Reference numeral 3a denotes an opening hole provided in the ceiling surface inclined downward toward the back of the refrigerator compartment 3 at the same position as the lower opening of the entrance space 10a of the suction passage 10.

The UrJ opening 10a is a place where a deodorizing device, which will be described later, is to be housed and installed. Reference numeral 11 denotes a box-shaped fixture having an outer circumferential wall 11a and a plurality of ventilation holes tib on the lower surface. This box-shaped fixture 11 has an outer circumferential wall 11a section housed in the entrance space 10a of the suction passage 10, and a lower surface extending into the refrigerator compartment 3 through an opening hole 3a provided in the ceiling surface. It is locked in such a way that it can be attached and detached freely. A plurality of ventilation holes 11b provided on the lower surface of the box-shaped fixture 11 are composed of partition plates 12 arranged at regular intervals. This partition plate 12 has an inclined part 12c, a receiving part 12a, and a rising part +
It consists of 2 hours. The inclined portion 12e is arranged to cover the space between the partition plates 12, and the receiving portion 12a is located directly below the activated carbon housed in the box-shaped fixture 11.

The receiving portion 12a of the partition plate 12 serves to catch fine powder generated by the weathering of honeycomb activated carbon, which will be described later, and prevent it from falling into the refrigerator compartment 3.

15 is activated carbon whose outer periphery is held down by a mounting frame 16 and is provided to deodorize the interior of the refrigerator, and is detachably installed in the upper opening of the box-shaped fixture 11. The activated carbon 15 is formed by extruding a large number of ventilation holes 1.5a into a honeycomb shape, and the ventilation holes +5a are installed vertically. 1
Reference numeral 7 denotes a bypass passage provided on the outer peripheral wall of the back of the box-shaped fixture 11, through which cold air from the cooling chamber 8 flows back through the suction passage 10 toward the refrigerator compartment 3 when the cooling operation of the refrigerator is stopped. This is for introducing cold air into the refrigerator compartment 3.

This bypass passage 17 allows backflow cold air (broken line arrow in the figure) to flow into the refrigerator compartment 3 without directly hitting the activated carbon 15. This is especially true when the ambient temperature at the location where the refrigerator is installed is low (for example, below 10°C), and when the inside of the refrigerator compartment 3 is in a humid state, the temperature inside the refrigerator is approximately 3°C during cooling operation.
When the returned cold air containing moisture passes through the ventilation holes of the honeycomb activated carbon 15, it is absorbed by the honeycomb activated carbon 15, and when the cooling operation is stopped, the honeycomb activated carbon 15 sucks cold air (approximately -25°C) from the cooling chamber 8. Passing through passage 10,
This is provided not only to prevent the honeycomb activated carbon 15 that has absorbed moisture from freezing and impairing the deodorizing effect since it flows back into the refrigerator compartment 3, but also to prevent the activated carbon 15 from cracking due to freezing. The width of the bypass passage 17 is equal to or larger than the width of the honeycomb activated carbon 15 to prevent the backflow cold air from directly hitting the honeycomb activated carbon 15. Further, in order to prevent the cooled air from flowing out to the activated carbon side, a cover plate 18 is provided at the upper end of the outer peripheral back wall surface forming the bypass passage t7.

To explain the deodorizing action of the deodorizing device configured as described above, the suction passage 10 formed to forcibly draw cold air into the cooler 5 side has air blown out to the refrigerator compartment 3 side by the blower 7. About the same amount of cold air is sucked in. Activated carbon 15 installed to remove odors inside the refrigerator compartment 3
is installed in the entrance space 10a of the suction passage 10, and all of the returned cold air passes through the ventilation hole 11b on the bottom surface of the box-shaped fixture 11 as shown by the arrow (solid line) in the figure, and the activated carbon 15 is ventilated. By passing through all the holes 15a,
The odor contained in the cold air is efficiently deodorized by the honeycomb activated carbon 15.

In other words, the activated carbon of the present invention is capable of efficiently deodorizing the concentrated and flowing cold air. Further, since a cover plate is provided above the bypass passage 17, the cold air flowing backward flows only to the bypass passage 17 side and does not flow to the activated carbon 15 side.

〔Effect of the invention〕

According to the present invention, even if the activated carbon is frozen by cold air flowing back from the freezer compartment side and becomes clogged, the passage between the refrigerator compartment and the freezer compartment is secured by the bypass passage.

The problem of insufficient cooling in the refrigerator compartment is solved. Also.

Freezing the deodorizer does not impair its deodorizing effect.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of a refrigerator equipped with the present invention, and FIG. 2 is a detailed view of section A in FIG. 1. 2... Freezer room, 3... Refrigerator room, 4... Heat insulation wall, 5
・Cooler, 6.・Blower, 7.・Fan guard, 8.
・Cooling room, 9...Return passage of freezing room, 10...Suction passage, 11...Box-shaped fitting, lla...Outer peripheral wall, I
2... Partition plate, 12a... Receiving part, +2h... Rising part, 12c... Inclined part, 15... Honeycomb activated carbon, 17... Bypass passage, 18... Covering plate.

Claims (1)

[Claims] 1. A refrigerator comprising an insulating wall that partitions a freezer compartment and a refrigerator compartment, a cold air suction passage from the refrigerator compartment provided in the insulation wall, and a deodorizing device attached to the suction passage. A deodorizing device for a refrigerator, characterized in that the deodorizing device is provided with a bypass passage that communicates the refrigerator compartment with the suction passage. 2. The deodorizing device for a refrigerator according to claim 1, further comprising a cover plate provided above the bus pass passage.