JP2009276055A - Odor natural exhausting type refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy saving type refrigerator capable of discharging naturally an odor, an abnormal odor and the like generated easily from raw meat or the like, without using a forcible means such as a ventilation fan, and free from the anxiety of worsening a cooling efficiency. <P>SOLUTION: The odor in a refrigerator chamber flows into an exhaust pipe together with a convection caused by a temperature difference in the refrigerator chamber and a natural air flow when opening and closing a door, since the chamber of the refrigerator is communicated with outside air by the exhaust pipe with no fan, to discharge naturally the slight odor in the refrigerator chamber from the exhaust pipe to an outside, in its structure, and then is discharged into the outside air by door closing pressure. A problem wherein the offensive odor stays in the refrigerator chamber is thereby eliminated because the odor in the refrigerator chamber is discharged naturally without providing a special forcibly exhausting means. A heat efficiency is satisfactory and the energy saving type refrigerator is provided, because forcible exhaustion is not carried out. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a natural exhaust type refrigerator that can naturally and effectively discharge odors, malodors, and the like in a refrigerator by the action of an air flow when a door is opened and closed.

As described in Japanese Utility Model Laid-Open No. 6-4576, fresh air outside the cabinet is forcibly sucked into the chamber by the ventilation fan of the upper wall surface vent hole, and forced out of the chamber by the ventilation fan of the lower wall surface vent hole. A structure for exhausting air has been proposed.
In this way, the inside cold air can be smoothly recirculated, and the freshness of the fresh food can be maintained. By such forced exhaust, when storing refrigerated products, especially fresh food, accumulation of metabolic gas etc. excreted from stored products, ie, ethylene gas, carbon dioxide gas, odorous gas, etc. is forced by a timer about twice a day. Exhaust outside the chamber. Thereby, it is possible to prevent a fresh food from being rapidly aged and spoiled and to be stored for a long time.

6-4576

As mentioned above, in a prefabricated refrigerator, if fresh air outside the cabinet is forcibly sucked into the cabinet and forced out to the outside with a ventilation fan in the lower wall vent on the opposite side, it will be excreted from stored items such as fresh food However, it is not efficient because it requires an intake fan and an exhaust fan, and escapes cold air.
The technical problem of the present invention pays attention to such problems, and does not use forcing means such as a ventilating fan. The object is to realize a refrigerator that can be discharged naturally and that does not reduce the cooling efficiency. Odor and off-flavor are both lighter and heavier than air, and are therefore compatible with both.

The technical problem of the present invention is solved by the following means. According to the first aspect of the present invention, one or more storage rooms of the refrigerator are communicated with the outside air through an exhaust pipe without a fan, so that the odor in the storage room is naturally released from the exhaust pipe to the outside under the action of an air flow when the door is opened and closed. It is a refrigerator characterized by having a structure to be discharged.
In this way, the refrigerator compartment is communicated with the outside air by an exhaust pipe without a fan, and the odor in the compartment is naturally discharged from the exhaust pipe to the outside due to the effect of the air flow when the door is opened and closed. Therefore, the odor in the chamber is pushed into the exhaust pipe due to convection due to a temperature difference in the chamber or the like, or a change in pressure or air flow when opening and closing the door, and then discharged into the outside air. Therefore, since the odor in the storage room is naturally discharged without providing any special forced exhaust means, the problem that bad odors are accumulated in the storage room is solved.

According to a second aspect of the present invention, there is provided the refrigerator according to the first aspect, wherein a ceiling portion of an arbitrary storage room is communicated with outside air by the exhaust pipe or the exhaust pipe via the communication pipe.
Since the light air in the storage room rises toward the ceiling and stagnates, the ceiling part of any storage room of the refrigerator is communicated with the outside air by an exhaust pipe or an exhaust pipe via a communication pipe. Thus, the light odor rising toward the ceiling and stagnating effectively rises quickly into the exhaust pipe via the exhaust pipe or the communication pipe, and is then pushed out into the outside air by the air flow when the door is opened and closed.

According to a third aspect of the present invention, the ceiling surface of the storage room is inclined, the upper part of the inclination is connected to the outside air via the exhaust pipe or the communication pipe, and the upper part of the inclination is arranged near the door or at an arbitrary position. It is a refrigerator of Claim 1 or Claim 2 characterized by these.
In this way, since the ceiling surface is inclined and the upper part of the inclination is connected to the outside air via the exhaust pipe or the communication pipe, the light odor rising and stagnating on the inclined upper part of the ceiling surface is effectively and promptly obtained. Then, it rises into the exhaust pipe and the communication pipe, and is then pushed out into the outside air by the air flow when the door is opened and closed.
Moreover, since the temperature close to the door in which the outside air easily enters is high in each chamber, if the inclined upper part is disposed near the door, the odor rises and discharges quickly.

In the fourth aspect of the present invention, as shown in FIGS. 1 and 2, the lower chamber is in communication with the upper chamber or the exhaust pipe through the communication means. The refrigerator according to claim 1, claim 2 or claim 3.
In this way, the lower storage room communicates with the upper storage room via the communication pipe, so that the light odor of the lower storage room is not connected to the upper storage room as shown in FIG. Via, it rises into the exhaust pipe 6 and is then pushed out into the atmosphere by the air flow when the door is opened and closed.
Alternatively, as shown in FIG. 2, when the lower storage chamber communicates with the exhaust pipe 6 via the communication pipe 9, the communication pipe 9 does not pass through the exhaust pipe 6 without passing through the upper storage chamber. And since it discharges | emits in air | atmosphere, there is no possibility of polluting the upper store room with the light odor generated in the lower store room.

5. The refrigerator according to any one of claims 1 to 4, wherein a filter means is provided in the exhaust pipe so that insects and foreign matters cannot enter the storage room. It is.
As described above, the filter means is provided in the exhaust pipe and is closed by the filter, so that there is no possibility that insects and foreign matters enter the storage room and become unsanitary.
It should be noted that a deodorizer provided near the filter can suppress the odor from being emitted by the discharged odor, which is preferable when a refrigerator is installed in the room.

A sixth aspect of the present invention is characterized in that an odor storage chamber smaller than the storage chamber is provided on the ceiling inner surface and / or the ceiling outer surface of the uppermost storage chamber, and the exhaust pipe is provided in the odor storage chamber. It is a refrigerator in any one of Claim 5.
Thus, since the odor storage chamber smaller than the storage room is provided on the ceiling inner surface and / or the outer surface of the uppermost storage room of the refrigerator, the light odor accumulated in the odor storage room is unlikely to flow back to the storage room. . Further, since the exhaust pipe is provided in the odor storage chamber, the light odor accumulated together with the high temperature air in the odor storage chamber is quickly pushed out from the exhaust pipe into the outside air by the air flow at the time of opening and closing the door. Therefore, a light odor is less likely to remain in the storage room.

Claim 7 is prepared in advance so that a mounting hole for mounting the exhaust pipe is prepared so that the exhaust pipe can be equipped at the start of use of the refrigerator, or is prepared so that it can be easily drilled, or The refrigerator according to any one of claims 1 to 6, wherein an external projecting portion of the exhaust pipe has a detachable structure.
In this way, a mounting hole for mounting the exhaust pipe is prepared in advance so that the exhaust pipe can be equipped at the start of use of the refrigerator, or it is prepared so that it can be easily drilled. At the start, an exhaust pipe can be installed and equipped. Alternatively, since an exhaust pipe mounting hole is prepared, the exhaust pipe can be easily installed by opening the mounting hole.
Alternatively, since the external projection 6 of the exhaust pipe has a detachable structure as shown in FIG. 1, it can be attached to the fixed cylinder 61 at the start of use and removed during movement and storage so as not to get in the way.
Therefore, it is not necessary to always attach the exhaust pipe 6 from the time of shipment from the manufacturing factory, and it is not bulky because of the external projecting portion 6 of the exhaust pipe during transportation and storage.

According to the eighth aspect of the present invention, any one or more compartments of the refrigerator are communicated with the outside air through an exhaust pipe, and the odor in the compartment is exhausted by receiving an increase in pressure in the compartment when the door is opened or closed or an air flow. In this method, the odor is discharged to the outside naturally.
In this way, any one or more storage rooms of the refrigerator are communicated with the outside air through the exhaust pipe, and the odor in the storage room is naturally discharged to the outside through the exhaust pipe under the action of the air flow when the door is opened and closed. Therefore, the odor in the storage room naturally flows into the exhaust pipe, and is then pushed out to the outside air by the air flow and pressure change when the door is opened and closed. As a result, even if no special forced exhaust means is provided, since the light odor in the storage room is naturally discharged, the problem that bad odors are accumulated in the storage room can be solved at low cost.

According to the ninth aspect of the present invention, one or more storage rooms of the refrigerator are communicated with outside air through an exhaust pipe without a fan, so that the odor in the storage room is naturally and externally removed from the exhaust pipe under the action of an air flow when the door is opened and closed. In the structure to be discharged into the cabinet, a downward exhaust pipe is provided on the shelf plate or bottom plate between the upper and lower storage rooms, and the lower end thereof is opened to the outside air, so that the odor heavier than the indoor air on the shelf plate or bottom plate is generated. The refrigerator has a structure for discharging.
In this way, a structure that discharges odor heavier than the air in the cabinet on the shelf plate or the bottom plate by providing a downward exhaust pipe on the shelf plate or the bottom plate between the upper and lower chambers and opening the lower end to the outside air Therefore, odors and off-flavors that are heavier than the air in the cabinet are discharged to the bottom of the refrigerator under their own weight.
As described above, according to the present invention, since the odor in the storage room is naturally discharged by convection or air flow when the door is opened and closed, no power is required and it is economical. In addition, the cool air in the cabinet can be prevented from being forcibly discharged wastefully, the thermal efficiency is excellent, and the energy saving effect is great.

As described in claim 1, the refrigerator compartment communicates with the outside air through an exhaust pipe without a fan, and the odor in the compartment is naturally discharged from the exhaust pipe to the outside under the action of an air flow when the door is opened and closed. Because of this structure, odors in the storage room are pushed into the exhaust pipe due to convection due to temperature differences in the storage room and changes in pressure and air flow when opening and closing the door, and then discharged into the outside air . Therefore, since the odor in the storage room is naturally discharged without providing any special forced exhaust means, the problem that bad odors are accumulated in the storage room is solved.

Since the light air in the storage room rises toward the ceiling and stagnates, the ceiling part of any storage room of the refrigerator is communicated with the outside air by an exhaust pipe or an exhaust pipe via a communication pipe. Thus, the light odor rising toward the ceiling and stagnating effectively rises quickly into the exhaust pipe via the exhaust pipe and the communication pipe, and is then pushed out into the outside air by the air flow when the door is opened and closed.

Since the ceiling surface is inclined and the inclined upper portion is connected to the outside air via the exhaust pipe or the communication pipe as in claim 3, the light odor that rises and stagnates on the inclined upper portion of the ceiling surface is effective. Ascends quickly and quickly into the exhaust pipe and the communication pipe, and is then pushed out into the outside air by the air flow when the door is opened and closed. Moreover, since the temperature close to the door in which the outside air easily enters is high in each chamber, if the inclined upper part is disposed near the door, the odor rises and discharges quickly.

As in claim 4, since the lower chamber is in communication with the upper chamber through the communication pipe, the light odor in the lower chamber is It goes up into the exhaust pipe 6 through the storage room, and is then pushed out into the atmosphere by the air flow when the door is opened and closed.
Alternatively, as shown in FIG. 2, when the lower storage chamber communicates with the exhaust pipe 6 via the communication pipe 9, the communication pipe 9 does not pass through the exhaust pipe 6 without passing through the upper storage chamber. And since it discharges | emits in air | atmosphere, there is no possibility of polluting the upper store room with the light odor generated in the lower store room.

As described in claim 5, since the exhaust pipe is provided with filter means and closed with a filter, there is no possibility that insects and foreign matters enter the storage room and become unsanitary.

Since the odor storage chamber smaller than the storage room is provided on the ceiling inner surface and / or the ceiling outer surface of the uppermost storage room of the refrigerator, the light odor accumulated in the odor storage room is stored in the storage room. Difficult to flow backwards. Further, since the exhaust pipe is provided in the odor storage chamber, the light odor accumulated together with the high temperature air in the odor storage chamber is quickly pushed out from the exhaust pipe into the outside air by the air flow at the time of opening and closing the door. Therefore, a light odor is less likely to remain in the storage room.

As in claim 7, a mounting hole for attaching the exhaust pipe is prepared in advance so that the exhaust pipe can be equipped at the start of use of the refrigerator, or a preparation is made so that the exhaust pipe can be easily drilled. Therefore, it can be equipped with an exhaust pipe at the start of use. Alternatively, since an exhaust pipe mounting hole is prepared, the exhaust pipe can be easily installed by opening the mounting hole. Alternatively, since the external projection 6 of the exhaust pipe has a detachable structure as shown in FIG. 1, it can be attached to the fixed cylinder 61 at the start of use and removed during movement and storage so as not to get in the way. Therefore, it is not necessary to always attach the exhaust pipe 6 from the time of shipment from the manufacturing factory, and it is not bulky because of the external projecting portion 6 of the exhaust pipe during transportation and storage.

As in claim 8, any one or more storage rooms of the refrigerator are communicated with the outside air by an exhaust pipe, and the odor in the storage room is affected by an increase in pressure in the storage when the door is opened or closed or an air flow. Since the odor is naturally discharged to the outside through the exhaust pipe, the odor in the storage room naturally flows into the exhaust pipe, and is then pushed out to the outside air by the air flow and the pressure change when the door is opened and closed. As a result, even if no special forced exhaust means is provided, since the light odor in the storage room is naturally discharged, the problem that bad odors are accumulated in the storage room can be solved at low cost.

As in claim 9, by providing a downward exhaust pipe on the shelf plate or bottom plate between the upper and lower chambers and opening the lower end to the outside air, the odor heavier than the indoor air on the shelf plate or bottom plate is generated. Since it has a structure for discharging, odors and off-flavors heavier than the air in the cabinet are discharged under the refrigerator under its own weight.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a first embodiment of an odor natural exhaust type refrigerator according to the present invention. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the odor natural exhaust type refrigerator by this invention. It is a longitudinal cross-sectional view which shows embodiment of FIG. 3 of the odor natural exhaust type refrigerator by this invention. It is a longitudinal cross-sectional view of embodiment which applied this invention to the large sized refrigerator. It is a figure which shows the fan provided in a downward exhaust pipe, (1) is a longitudinal cross-sectional view, (2) is AA sectional drawing.

Next, an embodiment of how the natural exhaust refrigerator according to the present invention is practically described will be described. FIG. 1 shows a first embodiment of a naturally exhausted refrigerator according to the present invention, which is a vertical cross-sectional view of a refrigerator casing 4 composed of three-level storage rooms 1, 2, and 3 as viewed from the side. The door. The casing 4 and the door D of the refrigerator are usually hollow in consideration of heat insulation.
The ceiling surface 5 of the uppermost chamber 3 is inclined like an umbrella, and an exhaust pipe 6 is arranged at the highest position to communicate with the outside air. For this reason, the light odor generated from the refrigerated material in the storage room 3 due to the increase in the internal pressure when the door D is closed is discharged into the outside air from the exhaust pipe 6 together with the rising air, and the odor accumulates in the storage room 3. Can be prevented. Further, since the exhaust pipe 6 is located at the highest position on the inclined ceiling surface 5, light odors in the storage room 3 are effectively gathered at the highest inclined position on the ceiling surface 5 and discharged. Therefore, the exhaust pipe 6 does not require any forced exhaust means such as a fan.

However, if it protrudes from the top plate 51 of the refrigerator, it is an obstacle to carry it out of the manufacturing factory, so it is convenient to use a detachable structure. For this purpose, a fixed cylinder 61 (or a simple through-hole) 61 is vertically arranged between the top plate 51 of the uppermost chamber 3 and the upper end of the inclined ceiling surface so that the lower end of the detachable exhaust pipe 6 can be inserted. It is fixed to the mounting.
Therefore, the exhaust pipe 6 that protrudes to the outside is removed during transportation, and the externally protruded exhaust pipe 6 is inserted and attached into the fixed cylinder 61 at the start of use.
In addition, by extending the auxiliary exhaust pipe 62 to the external exhaust pipe 6 in a telescopic manner, the height can be adjusted by moving the exhaust port up and down as indicated by arrows.
When the top of the top plate 51 is narrow, the external exhaust pipe 6 is in the way, so it is convenient to remove it as in the case of transportation when the space above the top plate 51 is narrow. However, it is preferable to close the fixed cylinder 61 with a filter having good air permeability so that foreign matter cannot fall from the exhaust cylinder 61 into the chamber 3.

Since the air in the cabinet rises as the temperature is relatively high, the ceiling inner surface 5 is preferably inclined like an umbrella as shown in the figure. It is effective to dispose the fixed exhaust cylinder 61 and the exhaust pipe 6 at the highest point on the inclined upper part.
A light odor rises along the inclined ceiling inner surface 5 together with the high-temperature interior air, gathers at the highest position, receives the air flow and pressure changes when the door is opened and closed, and the outside from the exhaust pipe 61 and the exhaust pipe 6 Extruded.

Since the door D opens and closes from time to time, the temperature inside the chambers 1, 2, and 3 is high near the door D. And, the higher the temperature, the easier the air in the cabinet rises. Therefore, it is effective to dispose the fixed cylinder 61 for exhausting odor and the exhaust pipe 6 closer to the door D as shown in FIG.
If the exhaust pipe 63 has to be arranged behind the storage room 3 as indicated by a chain line due to design reasons, the inner surface of the ceiling is located just below the rear exhaust pipe 63 as indicated by a chain line 52. It is good to incline so that it may become the highest.
The rear exhaust pipe 63 is an example of an integral structure with the refrigerator body 4.

If the lowermost storage room 1 and the uppermost storage room 3 communicate with each other through the communication pipe 7, the light odor in the lowermost storage room 1 is communicated with the uppermost storage room 3 through the communication pipe 7. It rises inward and is pushed out into the outside air from the exhaust pipe 6 by the rise in the compartment pressure when the door is closed together with the strange odor in the top compartment 3.
If the bottom chamber 1 or the middle chamber 2 is also tilted in an umbrella shape and the communication pipes 81 and 82 are attached to the uppermost part, the light odor in the bottom chamber 1 is From the communication pipe 81, the light rises from the communication pipe 82 into the uppermost warehouse 3 along with the light odor in the middle warehouse 2 through the middle warehouse 2. And it pushes out from the exhaust pipe 6 with the light nasty smell in the uppermost store room 3 by the door closing pressure.
If the communication pipes 81 and 82 are connected to each other as shown by the chain line 8, the light odor in the lowermost storage room 1 is not directly passed through the middle storage room 2 as in the case of the communication pipe 7 described above. Ascend into the upper chamber 3. In this case, it is meaningless to incline the ceiling surface of the middle compartment 2 and the communication pipe 7 is also unnecessary.

Therefore, any one of the communication pipes 7, 81, 82 can be freely selected at the time of manufacture. Also, if the through-holes for inserting the communication pipes 7, 81, 82 are opened in the ceilings of the chambers 1 and 2 and the detachable lid is attached and closed, the user can In use, the lid at a desired position can be removed and the communication pipes 7, 81, 82 can be selected and inserted. A connecting pipe that can be inserted into the communicating pipes 81 and 82 is prepared as an accessory, and if the user inserts it, the state becomes a chain line 8, so that the directly connected communicating pipe 7 can be omitted from the beginning.

FIG. 2 shows a second embodiment in which the communication pipe 9 standing on the ceiling in the lowermost compartment 1 is connected to the side wall of the exhaust pipe 6 on the back of the ceiling above the ceiling surface 5 of the uppermost compartment 3. The principle of spraying is adopted.
In this case, a light off-flavor in the lower chamber 1 is guided from the communication pipe 9 to the exhaust pipe 6 and directly pushed out from the exhaust pipe 6 into the outside air. That is, in the upper chamber 3, odor is pushed out through the exhaust pipe 6 due to an increase in the internal pressure when the door D is closed. The odor in the communication pipe 9 is sucked and discharged by the air flow at this time.
Therefore, when raw meat is stored in the lowermost chamber 1 and the bad odor is bad, it can be discharged into the outside air via the exhaust pipe 6 without going through the middle and upper chambers 2 and 3. The middle and uppermost storage rooms 2 and 3 are not affected by the odor in the lowermost storage room 1. The lower end of the communication pipe 9 can be connected to the ceiling surface of the middle storage room 2 so that odors and bad odors in the middle storage room 2 can be exhausted from the exhaust pipe 6.

If the communication pipe 9 shown in the figure has a horizontal hole at the ceiling of the middle cabinet room 2, the odors of both the compartments 1 and 2 can be discharged through the communication pipe 9. Further, the communication pipe 9 and the communication pipe 7 in FIG. 1 are preferably piped close to the left and right wall portions so as not to obstruct the door D when the door D is opened and the refrigerated material is taken in and out. Or you may arrange | position in the back.
Note that the upper end of the communication pipe 9 can be communicated with the lower end of the exhaust pipe 6 below the ceiling surface 5, that is, at a position near the ceiling surface 5 of the uppermost storage room 3.

FIG. 3 shows the third embodiment. The uppermost storage room 3 is the same as the embodiment shown in FIG. 1, and the exhaust pipe 6 without forced exhaust means is provided at the highest part of the ceiling surface 5 inclined like an umbrella. Is provided.
However, the ceiling back room 53 of the inclined ceiling surface 5 is formed, and the inside of the lowermost storage room 1 and the ceiling back room 53 are communicated with each other through the communication passage 10. 53 is communicated with the communication passage 11.
Therefore, the light odor generated in the lower chamber 1 and the light odor generated in the middle chamber 2 rise into the ceiling back chamber 53 through the communication passages 10 and 11, and then pass through the exhaust pipe 6. It is pushed out into the open air by the door closing pressure. In this way, a structure in which a light odor rises in the communication passages 10 and 11 unique to the chambers 1 and 2 and is pushed out from the exhaust pipe 6 into the atmosphere by the door closing pressure is also possible.
The communication passages 10 and 11 may have a tubular shape as shown in FIGS.

A filter f is placed in the opening of the sideways exhaust pipe 6 in FIG. 3, and the filter f is also attached to the upper end of the upright exhaust pipe 6 in FIG. Accordingly, cockroaches and other insects can be prevented from entering the refrigerator compartment from the exhaust pipe 6. In addition, as the filter f, various net | networks can be utilized or a nonwoven fabric etc. can also be used. The mesh of the net is free and is not particularly limited, but finer is better.

FIG. 4 is a longitudinal sectional view of an embodiment in which the odor storage chamber 12 is provided. The odor storage chamber 12 is smaller than each storage room. And although it protrudes above the top plate 51 in the example of illustration, if it expands in the uppermost store room, the capacity | capacitance as an odor storage chamber will increase.
Alternatively, only the lower side than the top plate 51, that is, only the odor storage chamber in the storage room can be provided. In this case, the odor storage chamber does not protrude upward from the top plate 51.
The light odor that has risen into the odor storage chamber 12 is pushed out of the refrigerator by the door closing pressure through the fixed cylinder 61 and the exhaust pipe 6.

FIG. 4 is an example of a large refrigerator, 14 is an air blowing device for an air curtain at the entrance / exit, h is a handle of the door D, 15 is a condenser, 16 is an outdoor unit, 17 is a drain pipe, Contains a large number of refrigerated products 18. In addition, the refrigerator of this invention is applicable also to the refrigerator for showcases.

The above embodiment is a structure in which the exhaust pipe projects upward from the top plate, but when there is no space for the exhaust pipe on the upper side, as shown by a chain line 64 in FIG. Alternatively, it is possible to project the exhaust pipe in the left-right direction of the refrigerator body.
As described above, when the exhaust pipe is protruded in the lateral direction and the inner surface of the ceiling is inclined, it is needless to say that the position of the door is ignored and the highest portion of the inclined ceiling is positioned at the base of the horizontal exhaust pipe.
The shelves between the upper and lower chambers 1, 2, 3 are not necessarily integrated with the refrigerator housing 4, but are separated, and can be freely removed while the end is supported on the support rail 19. There are many structures that can move back and forth. Accordingly, the communication pipes 7 and 9 are inserted and assembled when the shelf board is mounted. The support rail 19 is usually provided on the inner surfaces of the left and right side walls.

The above assumes a case where the odor or off-flavor gas is lighter than air. However, if the odor or off-odor is heavier than air, a downward exhaust pipe 20 as shown in FIG. 1 is provided. In many cases, a compressor and a motor M are disposed below the lowermost chamber 1, so that the bottom plate of the chamber 1 is not flat and is often inclined forward and downward. As a result, an odor or odor that is heavier than the air in the storage room 1 drops and accumulates closer to the door D. However, since it is naturally discharged when the door D is opened and closed, there is no problem.
In order to discharge the heavy odor accumulated in the second and higher store rooms 2 and 3, a downward exhaust pipe 20 is provided on the shelf 2p of the second store room 2, and the lower end thereof is connected to the bottom plate 1p. Opened on the lower side. As a result, odors and odors heavier than the air in the chamber 2 descend in the exhaust pipe 20 and are naturally discharged into the atmosphere.

The odor and odor inside the chamber are heavier than the air inside the chamber, and are cooler and heavier than the outside air. Therefore, the odor and strange odor are easily lowered in the exhaust pipe 20 by the dead weight and discharged outside the chamber.
Since the upper surface of the shelf 2p is inclined in a funnel shape and the upper end of the exhaust pipe 20 is opened at the deepest position, all odors and odors heavier than the air in the chamber 2 are all in the funnel-shaped portion. After concentrating, it descends into the exhaust pipe 20 and is discharged into the outside air from the opening at the lower end.
Since the upper surface of the shelf 3p of the third-stage warehouse room 3 is also inclined in a funnel shape, odors and odors heavier than the air in the warehouse room 3 are concentrated in the funnel-shaped part and then pass through the communication hole. , Descend into the middle compartment 2. Then, it passes through the chamber 2 and concentrates by its own weight on the funnel-shaped portion on the upper surface of the shelf 2p, descends through the exhaust pipe 20, and is discharged into the outside air.
In addition, since a flat spider is placed on the funnel-shaped portion, there is no problem in placing the refrigerated object. Moreover, it is also possible to provide the said exhaust pipe 20 in the low part of the bottom plate 1p of the lowermost store room 1. FIG.

As shown in FIG. 5, a water turbine fan 20f is provided in the exhaust pipe 20, and since the water turbine fan 20f does not normally rotate, the exhaust pipe 20 is almost closed. Under the action of the air flow when the door D is opened and closed, the air in the cabinet moves, odors and odors heavier than the air concentrate on the funnel-shaped part, and descending air (odor) when descending the exhaust pipe 20 The waterwheel fan 20f rotates due to the odor. Therefore, only the odor and odor heavier than the inside air are discharged into the outside air, and the normal inside air without the odor and odor is prevented from being discharged wastefully by the water turbine fan 20f.
Although a propeller fan can be used as shown in FIG. 1, it is necessary to extend the support means from the inner surface of the exhaust pipe 20 in order to arrange the central support shaft at the center of the exhaust pipe 20.

As described above, odors and odors that are heavier than the air in the cabinet naturally descend by its own weight, and finally descend in the exhaust pipe and are discharged into the atmosphere. Due to the movement of the air inside, odors and odors heavier than air naturally gather in the funnel-shaped part on the top surface of the shelf board and are lowered into the exhaust pipe and discharged.
On the other hand, odors and odors that are lighter than the air in the cabinet rise naturally in the cabinet and rise to the exhaust pipes 6 and 61 side of the ceiling, but the cold air in the cabinet is heavier than the outside air, so the door D The odor and odor in the exhaust pipes 6 and 61 in the ceiling portion are pushed out to the outside air by the air flow in the cabinet when closing and pressurization when closing.

According to the present invention, as described above, by providing an exhaust pipe without a fan on the ceiling of the refrigerator, the odor or strange odor that is likely to be generated from raw meat is not compulsory, and the action of the air flow when opening and closing the door However, there is no risk of lowering the cooling efficiency unlike the fan exhaust type, and thermal efficiency is not sacrificed. Also, odors and odors heavier than the inside air are lowered by their own weight in the downward exhaust pipes provided on the shelf and the bottom plate, so that they are surely discharged to the outside air.

1 ・ 2 ・ 3 Storage room 4 Refrigerator housing
D door
5 Ceiling
51 Top plate
53 Ceiling back room
6 Exhaust pipe
61 Fixed cylinder (exhaust pipe insertion hole)
62 Auxiliary exhaust pipe
63 Rear exhaust pipe 64 Lateral exhaust pipe
7 Communication pipe
81/82 communication pipe
8 Connecting pipe 10.11 Communication path
f Filter for foreign matter prevention
12 Odor storage chamber 18 Refrigerated product 20 Exhaust pipe 1p Bottom plate 2p / 2p Shelf plate

Claims (9)

A structure in which one or more compartments of the refrigerator communicate with the outside air through an exhaust pipe without a fan, and the odor in the compartment is naturally discharged from the exhaust pipe to the outside due to the effect of the air flow when the door is opened and closed. The refrigerator characterized by becoming. The refrigerator according to claim 1, wherein a ceiling portion of an arbitrary storage room is communicated with outside air by the exhaust pipe or the exhaust pipe via the communication pipe. The ceiling surface of the storage room is inclined, the upper part of the inclination is connected to the outside air through the exhaust pipe or the communication pipe, and the upper part of the inclination is arranged near the door or at an arbitrary position. The refrigerator of Claim 1 or Claim 2. The refrigerator according to claim 1, 2 or 3, wherein the lower compartment is in communication with the upper compartment or the exhaust pipe through the communication means. The refrigerator according to any one of claims 1 to 4, wherein a filter means is provided in the exhaust pipe so that insects and foreign substances cannot enter the storage room. The odor storage chamber smaller than the storage chamber is provided on the ceiling inner surface and / or the ceiling outer surface of the uppermost storage chamber, and the exhaust pipe is provided in the odor storage chamber. The refrigerator in any one. A mounting hole for mounting the exhaust pipe is prepared in advance so that the exhaust pipe can be equipped at the start of use of the refrigerator, or prepared so that it can be easily drilled, or the exhaust pipe protrudes outside. The refrigerator according to any one of claims 1 to 6, wherein the portion has a detachable structure. Any one or more storage rooms of the refrigerator are communicated with the outside air through the exhaust pipe, and the odor in the storage room is naturally released to the outside through the exhaust pipe due to the pressure increase in the storage when the door is opened and closed and the effect of air flow. The odor discharge method of the refrigerator characterized by discharging. A structure in which one or more compartments of the refrigerator communicate with the outside air through an exhaust pipe without a fan, and the odor in the compartment is naturally discharged from the exhaust pipe to the outside due to the effect of the air flow when the door is opened and closed. In
By providing a downward exhaust pipe on the shelf plate or bottom plate between the upper and lower storage chambers, and opening the lower end to the outside air, it is structured to discharge odor heavier than the indoor air on the shelf plate or bottom plate. A refrigerator characterized by that.

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