JPH02275277A - Deodorant device of cold storage - Google Patents

Abstract

PURPOSE:To allow the arrangement of deodorant to be easy, permit heat generation of a heater to transmit to a cooler excellently and allow defrosting function to maintain excellently by allowing the device to cover with the deodorant having a specific catalyst on the circumference of a defrosting heater and a further permitting the glass tube circumference surrounding the heater to cover with the deodorant while forming cutouts at a position opposed to the cooler of the deodorant. CONSTITUTION:The circumference of heater wires 20 constituting a defrosting heater 17 is surrounded by deodorant 21. The deodorant 21 mixes a platinum group catalyst such as platinum and iridium in a porous substance to form in the form of a pipe. At first, nasty smell molecules are absorbed by the deodorant 21 excellently. The nasty smell molecules absorbed by the deodorant 21 is burnt and degradated by the heat generation of the heater wires 20 to convert into non-smell molecules such as H2O and CO2 and these are released into a circulation cool current by the operation of a blower 16 at the next cooling time. On the other hand, deodorant 27 is provided so as to cover the circumference of a glass tube 24 and cutouts 28 are longitudinally formed on the upper face opposed to a cooler 5. Thereby, infrared radiation generated from the heater wires 20 penetrates the glass tube 24 to irradiate on the cooler 5 directly upward of the cutouts 28.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a deodorizing device for a refrigerated storage, which cools the inside of the storage by circulating cold air.

(b) Prior Art A conventional refrigerator is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-228284. The inside of a refrigerator, especially the cold storage compartment, is filled with various odor molecules such as ammonia, hydrogen sulfide, and methyl mercaptan, which are emitted by various foods and cause discomfort to the user. In order to prevent the transfer of odors to food products, conventionally, a deodorizing device equipped with activated carbon made from coconut shells or the like as a raw material has been installed in the refrigerator, as disclosed in the above-mentioned publication.

(c) Problems to be Solved by the Invention Activated carbon has a large surface area and a large number of pores, and exhibits a deodorizing effect by adsorbing odor molecules therein. Therefore, although it has an immediate effect, it loses its function due to saturation. Therefore, it must be replaced every six months, for example.

Moreover, when it is saturated with odor molecules, it has the disadvantage that the odor molecules are released into the refrigerator due to the rise in temperature.

Also, for example, if an ozone generator is installed inside the refrigerator as described in Japanese Utility Model Publication No. 44-705, there is no need to replace it if it deodorizes, but there is a risk of damage to other parts and the user's fingers due to the oxidizing effect of ozone. For example, Japanese Patent Application Laid-Open No. 61-209665
There was a drawback that the apparatus was complicated, such as requiring an ozone decomposition catalyst as in the publication.

(d) Means for Solving the Problems The present invention circulates the cold air that has exchanged heat with the cooler into the refrigerator and then returns it to the cooler.
In a refrigerated storage room equipped with a refrigerator, the area around the defrosting heater is covered with a deodorizing material containing a platinum group catalyst.

Further, as the defrosting heater, a heater surrounded by a glass tube is used, and the glass tube is surrounded by a deodorizing body having a platinum group catalyst.

Furthermore, as the defrosting heater, a heater surrounded by a glass tube is used, the glass tube is surrounded by a deodorizing body having a platinum group catalyst, and the deodorizing body is placed at a position opposite to the cooler. It has a notch formed therein.

(e) Function The deodorizing body returns to the cooler, circulates in the refrigerator, adsorbs malodorous molecules in the cold air containing a large amount of malodorous molecules, and when the cooler is defrosted, the platinum metal catalyst it has acts, and is oxidized and decomposed by the heat generated by the defrosting heater. According to the invention of claim 1, the deodorizing body itself protects the defrosting heater from defrosting water.

According to the second aspect of the invention, the deodorizing body can be easily disposed, and the heat from the heater can be used most efficiently.

According to the third aspect of the present invention, the heat generated by the heater can be effectively transmitted to the cooler, and the defrosting function can be maintained satisfactorily.

(f) Embodiment Next, an embodiment of the present invention will be described based on FIGS. 1 and 2. In FIG. 1, reference numeral 1 denotes a refrigerator body, and 2.3 denotes a freezer compartment and a refrigerator compartment which are vertically divided by a partition wall 4 in the refrigerator body. Reference numeral 5 denotes a cooler installed vertically within a cooling chamber 8 formed at the back of the freezing chamber 2 by a partition plate 7. The cooler 5 is constructed by attaching a plurality of heat exchange fins to a meandering refrigerant pipe. The cold air cooled by the cooler 5 is sucked upward by the upper blower 6, and is then drawn into the freezer compartment 2.
from the outlet 9 formed in the partition plate 7, and from the outlet 1 to the refrigerator compartment 3 through the duct 10 that communicates with the side of the blower 6.
Each is blown out from 1.

The cold air discharged into the freezer compartment 2 circulates within the room and then passes through the partition wall 4.
It flows into the return passage 13 from the suction port 12 formed in the cooling chamber 8 and returns below the cooler 5 in the cooling chamber 8 . After the cold air discharged into the refrigerator compartment 3 circulates within the room, it flows into the return passage 15 from the suction port 14 on the lower front surface of the partition wall 4 and similarly returns below the cooler 5 in the cooling compartment 8. Moreover, the blower 6 and the compressor 16 are
The operation is controlled to be stopped based on the temperature of the freezer compartment 2. Furthermore, 17 is a defrosting heater arranged below the cooler 5 in the cooling chamber 2. The defrosting heater 17 generates heat every predetermined cumulative operating time of the compressor 16 (for example, 8 hours) and melts and removes frost that has grown on the upper cooler 5.

FIG. 2 shows a sectional view of this defrosting heater 17. In the case of FIG. 2, the defrosting heater 17 is constructed of the heater wire 20 itself, such as a nichrome wire. Furthermore, the heater wire 20 is sealed in a tubular deodorizing body 21 and surrounded by the deodorizing body 21 . The deodorizing body 21 is a porous body mixed with a platinum group catalyst such as platinum or iridium and molded into a tubular shape.

The operation in the above configuration will be explained. The cold air discharged by the operation of the blower 6 circulates in each chamber 2.3, contains malodorous molecules, and flows from the suction ports 12 and 14 to the return passage 1.
3.15 and gathers in the defrosting heater 17 area, but since the deodorizing body 21 located there is a porous body, the malodorous molecules in the concentrated cold air are well adsorbed on the deodorizing body 21. It is being done.

Next, when the predetermined cumulative operation time of the compressor 16 has elapsed,
Heater wire 20 is energized. Here, the calorific value of this type of heater wire is limited to a certain level in consideration of the thermal influence on the inside of the refrigerator. Therefore, even if the heater wire 20 generates heat, the deodorizing body 21 is only heated to about 200°C to 300°C.

Here, the combustion of the malodorous molecules adsorbed in the deodorizing body 21 normally occurs only at a high temperature of several thousand degrees Celsius, but the platinum group catalyst in the deodorizing body 21 burns the malodorous molecules at a relatively low temperature. It has the effect of burning (oxidizing) and decomposing it.

As a result, the malodorous molecules absorbed by the deodorizing body 21 are
The heat generated by I20 causes combustion and decomposition, producing H2O and CO!
These are converted into odorless molecules such as, and these are released into the circulating cold air by operation of the blower 16 during the next cooling. By repeating the above steps, the inside of each room 2.3 is deodorized.

At this time, if the heater wire 20 is directly sealed with a deodorizing body 21 as shown in FIG.
There is no need for a sealing glass tube or the like to protect the heater wires as shown in Publication No. 121, and since the deodorizing body 21 is located closest to the heater wires 20, the heater wires 20
This allows for the smooth combustion and decomposition of malodorous molecules. Furthermore, by replacing the deodorizing body 21 with the glass tube of the defrosting heater,
It can be installed at a location where malodorous molecules are concentrated, and the malodorous molecules can be smoothly adsorbed, and since there is no need to install the deodorizing body 21 at a pond, the internal volume of the refrigerator can be expanded.

The deodorizing body 21 becomes red hot due to the heat generated by the heater wire 20, and defrosting of the cooler 5 is achieved by the infrared rays emitted from the deodorizing body 21. Next, FIG. 3 shows the configuration of another defrosting heater 23. There is. In this case, the defrosting heater 23 uses a heater wire 20 sealed in a glass tube 24 in advance as in the above-mentioned publication. Further, the outer peripheral surface of the glass tube 24 is coated with a deodorizing body 25 having the same structure as described above. In this case, the above-mentioned defrosting heater 17 is used except that the glass tube 24 is required.
It has the same effect, and in addition, since the deodorizing body 25 can be provided to cover the glass tube 24, it has the advantage that it can be easily processed using the existing glass tube-enclosed heater wire type defrosting heater. There is.

Next, FIG. 4 shows still another defrosting heater 26. In this case, the heater wire 20 and the glass tube 24 are the same as those shown in FIG. A notch 28 is formed in the longitudinal direction. As a result, the infrared rays emitted from the heater wire 20 pass through the glass tube 24 and are directly irradiated onto the cooler 5 above from the notch 28, so that the defrosting performance of the cooler 5 is improved.

(G) Effect of the Invention According to the invention of Claim 1, the deodorizing body returns to the cooler, circulates inside the refrigerator, adsorbs malodorous molecules in the cold air containing a large amount of malodorous molecules, and During defrosting, the platinum group catalyst of the defrosting heater acts to combust (oxidize) and decompose with the heat generated by the defrosting heater, thereby deodorizing the interior of the refrigerator. In particular, since the deodorizing body replaces the conventional sealing glass tube, there is no need for a glass tube to protect the heater wire, and since the deodorizing body is located closest to the defrosting heater, the defrosting heater This allows for the smooth combustion and decomposition of malodorous molecules.

Furthermore, since the deodorizing body replaces the glass tube of the defrosting heater, it can be installed in areas where malodorous molecules are concentrated, allowing smooth adsorption of malodorous molecules, and there is no need to install the deodorizing body in other locations, making it easier to store It is also possible to expand the internal volume.

According to the invention of claim 2, the same deodorizing effect as that of claim 1 can be achieved, and in addition, the deodorizing body can be provided to cover the periphery of the glass tube. This has the effect of making it easier to process using a conventional heater.

According to the invention of claim 3, in addition to the effect similar to claim 2, the infrared rays emitted from the defrosting heater pass through the glass tube and are directly irradiated to the cooler from this notch, so that the defrosting performance of the cooler is improved. improves.

[Brief explanation of drawings]

Figure 1 is a schematic longitudinal sectional view of the refrigerator, and Figures 2 to 4 are! It is a sectional view of a heater for defrosting, respectively. l... Refrigerator body, 2... Freezer compartment, 3... Refrigerator compartment, 5... Cooler, 6... Blower, 8... Cooling room,
12.14...Suction port, 17.23.26...Defrosting heater, 20...-Heater wire, 21.25.27...
- Deodorizing body, 28...notch.

Claims (1)

[Claims] 1) After circulating the cold air that has exchanged heat with the cooler into the refrigerator,
The cooling storage is provided with a defrosting heater for the cooler and is returned to the cooler, and the area around the defrosting heater is covered with a deodorizing material having a platinum group catalyst. Deodorizing equipment for storage. 2) After circulating the cold air that has exchanged heat with the cooler,
In the cooling storage where the defrosting heater of the cooler is installed, the heater is returned to the cooler and the heater is surrounded by a glass tube, and the area around the glass tube of the defrosting heater is deodorized using a platinum group catalyst. A deodorizing device for a cooling storage, characterized in that it is covered with a body. 3) After circulating the cold air that has exchanged heat with the cooler,
In the cooling storage where the defrosting heater of the cooler is installed, the heater is returned to the cooler and the heater is surrounded by a glass tube, and the area around the glass tube of the defrosting heater is deodorized using a platinum group catalyst. A deodorizing device for a cooling storage, characterized in that the deodorizing body is covered with a body and a notch is formed in a position facing the cooler of the deodorizing body.