JPH01305284A - Freezing refrigerator - Google Patents

Abstract

PURPOSE:To prevent the deterioration of the capacity of a deodorizing catalyst upon a low temperature by providing a heating means on the surface of the deodorating catalyst provided near a cold air blow-off port for the inside of a freezing chamber. CONSTITUTION:A deodorizing cover 20, accommodating a deodorizer, is fixed to the fore part of a blow-off port 19 for an ice making corner in a freezing chamber. A deodorizing catalyst 22 for absorbing smell in cold air blown off from the blow-off port 19 for ice making corner of a fan grille 7 is received in the deodorizing cover 20. In order to prevent the deterioration of the capacity of the deodorizing catalyst 22 upon a low temperature, the coil 23 of a heater is wound around the surface of the deoforizing catalyst 22. According to this method, the temperature of the deodorizing catalyst is increased by the conduction of the heater to prevent the deterioration of the processing capacity of ozone whereby the deterioration of the capacity of the deodorizing catalyst upon the low temperature may be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refrigerator-freezer, and particularly to a means for making odorless water ice in a refrigerator-freezer.

[Conventional technology]

FIG. 7 is a front view of an example of a conventional refrigerator-freezer disclosed in Japanese Utility Model Application No. 120977/1980, with the door removed, and FIG. 8 is a vertical sectional view of the main part of the freezer compartment. It is. In both figures, 1 is the freezer compartment and 2 is the freezer compartment! 3 is a fan for blowing cold air into the freezer compartment 1; 4 is a motor for driving the fan 3; 5 is a cooler disposed on the F side of the motor 4; , 6 is an ice making tray, which blows cold air cooled by a cooler 5 into the freezer compartment 1 by a fan 3, and makes ice using this cold air.

7 is a fan grill of the freezer compartment 1 on which the ice tray 6 is placed; 8 is an outlet for the freezer compartment 1 drilled in the upper part of the fan grill 7; 9 is an outlet for blowing air from the outlet 8, etc. A suction port for the freezer compartment for sucking cold air into the cooler 5, 10 is an air path communicating with this suction port 9, and 11 is this air path 1.
The ice making corner with 0 is shown.

Next, the cooling effect will be explained.

The cold air cooled by the cooler 5 is transferred from the freezer compartment outlet 8 to the freezer compartment 1 by the fan 3 driven by the motor 4.
A part of the cold air is taken in through the air passage 10 to the ice-making corner 11 configured on the bottom surface of the freezer compartment 1, passes around the ice-making tray 6 and cools it, and then is transferred to the ice-making corner 11 configured on the bottom surface of the freezer compartment 1. It is led to the cooler 5 through the port 9 and is recirculated by the fan 3.

[Invention or problem to be solved]

The conventional freezer/refrigerator B1 has a structure as described above, so when food such as meat or fish is stored in the freezer compartment 1, the cold air mixed with the smell of straw will flow into the ice cube tray 6.
Ice will be made by flowing through the top. For this reason, there is a possibility that a mixture of odors from various foods may adhere to the ice surface, resulting in ice with a bad odor and a bad taste. When a deodorizing catalyst having a deodorizing function is used as a countermeasure to this problem, there is a problem in that the deodorizing ability of the catalyst is reduced by almost half in the low temperature state inside the freezing room compared to that at room temperature.

This invention was made in order to solve the above-mentioned problems of the conventional example, and its purpose is to deodorize the unpleasant odor of ice made in the ice making corner of the freezer compartment and make odorless and delicious ice. It is said that

[Means to solve the problem]

Therefore, in the refrigerator-freezer according to the present invention, a deodorizing catalyst is disposed near the cold air outlet into the freezer compartment, and the heating means is configured to prevent the deodorizing ability of the deodorizing catalyst from decreasing at low temperatures. This aims to achieve the above objective.

(Function) With the above-described configuration, the refrigerator-freezer ensures that the odor of the cold air flowing into the freezer compartment is removed by the deodorizing catalyst, and prevents the odor of the food in the freezer from adhering to the ice. Thus, odorless and delicious ice can be obtained, and since a heating means is provided, deterioration of the deodorizing catalyst's performance at low temperatures is prevented.

(Example〕 The present invention will be explained below based on examples.

(Structure) FIG. 2 shows a front view of an embodiment of the refrigerator-freezer according to the present invention with the door removed, and FIG. 1 shows an enlarged vertical cross-sectional view of the main parts of the freezer compartment.

Note that the reference numerals 1 to 5.7 to 9 in both figures indicate the same or equivalent components as in FIG. 7.8 showing the prior art example, and redundant explanation will be omitted.

In Fig. 1.2, 12 is a vegetable compartment provided below the refrigerator compartment 2 for storing vegetables, etc., 13 is a tray for vertically partitioning the inside of the freezer compartment 1, and 14 is a tray. A partition plate 15 further partitions the lower space partitioned by 13 in the horizontal direction; 15 is a partition plate between the tray 13 and the partition plate 14;
The ice making corner 16 formed by the ice making corner 1 is
17 is an ice storage box also placed in the ice making corner 15, and 18 is an ice making tray for clear ice.

Further, in FIG. 1, 19 is an outlet for the ice making corner 15 formed in the fan grill 7'', and 20 is a deodorizing device attached to the front of the outlet 19 for the ice making corner. The deodorizing cover 21 is the deodorizing cover 20
The ice-making outlet 22 formed on the top is a deodorizing catalyst housed in the deodorizing cover 20 and is used to absorb odor in the cold air blown out from the ice-making corner outlet 19 of the fan grill 7. It is something. 23 is a coil of a heater that is wound around the surface of the catalyst 22 in order to prevent the deodorizing ability of the catalyst 22 from decreasing when the temperature is low. Further, 24 is an air guide, and 25 is a tact formed between the fan grill 7 and the air guide 24.

(Cooling Effect) Next, the cooling effect in the above configuration will be explained. In FIG. 1, a part of the cold air cooled by the cooler 5 is blown out from the freezer compartment outlet 8 of the fan grill 7 by the fan 3 driven by the motor 4, and is blown into the freezer compartment.
to cool down. Also, some of this cold air is transferred to the fan grill 7
It is blown into the deodorizing cover 20 from the ice-making corner outlet 19 through the duct 25 between the air guide 24 and the ice-making corner, and is deodorized by the deodorizing catalyst 22 disposed inside the deodorizing cover 20 and formed on the deodorizing cover 20. Ice making outlet 2
A rapid ice making tray 16 and an ice making tray 18 for clear ice placed in the ice making corner 15 are cooled by the suction port 9.
The cold air is circulated back to the cooler 5.

As described above, by configuring the air passage of the ice making corner 15, the rapid ice making 111116 and the ice making tray 18 for clear ice
Since the ice made in the refrigerator is cooled with cold air that has not been deodorized, odorless ice is obtained without the smell of food in the refrigerator adhering to the ice.

(Deodorizing ability) In this deodorizing method, the air outlet 19 for the ice making corner is
The cold air blown into the deodorizing cover 20 is deodorized by adsorbing the odor molecules contained in the cold air using the deodorizing catalyst 22 disposed inside the deodorizing cover 20. The deodorizing ability of the deodorizing catalyst 22 is determined by the adsorption surface area of the catalyst, and this adsorption surface area decreases as odor molecules are adsorbed. An ozone generator 26 and a power source 27 for it are arranged on the back side of the catalyst 22, and the ozone generated by this device 26 oxidizes the odor molecules adsorbed on the catalyst 22 to make them odorless. The deodorizing ability is recovered and maintained at a certain level by separating and releasing it from the catalyst surface.

However, in FIG. 4/FIG. 5, room temperature/−
As shown in an example of the characteristic chart of ozone treatment efficiency versus elapsed days at 20°C, the ozone treatment efficiency of the catalyst 22 at low temperatures in Figure 5, that is, the ability to oxidize odor molecules with ozone, is the same as that at room temperature in Figure 4. The ozone treatment efficiency decreases relatively rapidly as the days pass, and the ozone treatment efficiency decreases to about 50% after 5 days and to about 30% after 10 days. In order to prevent this, in this embodiment, as shown in FIG. 3, a coil of a heater 23 is wound around the surface of the deodorizing catalyst 22, and this heater 23 is connected to each device as shown in FIG. As shown in the operational relationship diagram, before the ozone generators 26/27 operate, electricity is supplied for a certain period of time to raise the temperature of the deodorizing catalyst 22, thereby preventing a decrease in the ozone processing ability of the deodorizing catalyst 22. This prevents the deodorizing ability of the deodorizing catalyst 22 from decreasing.

Furthermore, as shown in Fig. 3, since the coil of the heating converter 23 is directly wound around the deodorizing catalyst 23, the temperature of the catalyst itself increases, but this does not substantially affect the temperature inside the freezer. does not affect

Here, as shown in FIG. 6, the ozone generator 26/27 operates only at the beginning when the next fan motor 4 is turned on after the cumulative time of the fan motor 4 reaches a certain fixed time.
It is designed to be N.

In the above embodiment, the deodorizing catalyst 22 is arranged in front of the ice-making corner outlet 19 of the fan grill 7. However, the deodorizing catalyst 22 is not limited to this location only, It may be placed at any position on the road.

(Effects of the Invention) As explained above, according to the present invention, since the deodorizing catalyst is disposed near the cold air outlet into the freezer compartment, the deodorized cold air cools the ice tray and cools the ice cubes. It is possible to prevent odor from adhering to the inside of the refrigerator.Furthermore, it has become possible to prevent a decrease in deodorizing ability due to a decrease in the temperature of the catalyst by using a heater for heating the catalyst.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of the main parts of the freezer compartment of an embodiment of the refrigerator-freezer according to the present invention, FIG. 2 is a front view of the refrigerator with the door removed, and FIG. 3 is a diagram showing the main parts of the deodorizing device. 4.5 is an enlarged cross-sectional view of each ozone treatment efficiency of the deodorizing catalyst, FIG. 6 is a diagram of the operational relationship of each device, and FIG. 7 is an example of the door of a conventional refrigerator-freezer. The front view of the removed state, and FIG. 8, is a longitudinal sectional view of the main parts of the freezer compartment. 1... Freezer compartment 3... Fan 5... Cooler 15... Ice making corner 16... Rapid ice making tray 22... . . . Deodorizing catalyst 23 . . . Heating heater (coil) In each figure, the same reference numerals indicate the same or equivalent components. 1st 2nd ( 15 Rice Coop 16 Rabbit Ice Making Yu 22 Biting Claw Touch 23 Shaft Snake Ruler (Coil) 2nd Section 3rd Figure 1 Ozone Treatment φ ('/,) Atsushi 7 E @8 figure

Claims (1)

[Claims] A refrigerator-freezer characterized in that a deodorizing catalyst is disposed near a cold air outlet into a freezer compartment of the refrigerator-freezer, and a heating means is attached on the surface of the catalyst.