JP6972396B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator, particularly to a drainage structure.

Generally, in a refrigerator, cold air is generated in a cooler chamber provided on the back side of the refrigerator body, and the cold air is circulated in the refrigerator chamber by a cooling fan to cool food in the refrigerator chamber. Further, the amount of cold air supplied to the refrigerating chamber is adjusted by opening and closing the refrigerating chamber damper installed in the air passage, and the temperature of the refrigerating chamber is controlled by controlling the opening and closing of the refrigerating chamber damper. ..

The cold air flowing into the refrigerating chamber is distributed to the refrigerating chamber through the air passage in the refrigerating chamber duct provided on the back side of the refrigerating chamber. For example, in Patent Document 1, the refrigerating chamber damper is provided in the air passage below the refrigerating chamber duct.

Japanese Unexamined Patent Publication No. 2018-109501

In the prior art described in Patent Document 1, a refrigerating chamber damper is provided at a position above the joint surface between the refrigerating chamber duct and the partition plate constituting the floor surface of the refrigerating chamber, and the refrigerating chamber is further provided. The drainage member is provided at a position above the damper. By adopting such a configuration, it is possible to induce the condensed water to flow to another harmless place such as a cooler room without reaching the vicinity of the refrigerator room damper in the process of flowing from the upper side to the lower side by gravity. It has become like.

If the refrigerating room damper is installed below the floor of the refrigerating room, for example, in a corner of the cooler room cover, the condensed water generated below the drainage member joins the refrigerating room duct and the partition plate. It is not possible to prevent it from entering the air passage from the surface and adhering to the refrigerator damper. Therefore, the installation position of the refrigerating room damper is limited to the inside of the refrigerating room duct above the floor surface of the refrigerating room.

Considering the handling of the power supply wiring and control wiring of the damper, the ease of assembling the air passage parts themselves, the ease of repair, and the size of the refrigerating room food storage space, the refrigerating room damper is a refrigerating room duct. If it is installed separately from the refrigerator duct in the air passage below, the degree of design freedom is high and there is a high possibility that a more convenient refrigerator can be obtained. However, conventionally, there is only a method of installing a refrigerating room damper in the refrigerating room duct, and in that case, there is a problem that, for example, the storage space for food in the refrigerating room must be reduced. Further, in the prior art, since the drainage member is an independent member, there is a problem that additional material cost and manufacturing cost are required to attach the member.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a refrigerator capable of suppressing the adhesion of condensed water to a damper while suppressing the material cost and the manufacturing cost. It is supposed to be.

The refrigerator according to the present invention includes a heat insulating box body provided with a refrigerator compartment and a cooler chamber inside, a cooler arranged in the cooler chamber and cooling air supplied to the refrigerator chamber, and the cooler. A refrigerating room duct forming a part of an air passage for guiding the cold air cooled by the above-mentioned cooling room to the refrigerating room, and a floor surface of the refrigerating room provided under the refrigerating room duct. The refrigerating room floor parts are provided with a damper installed in the air passage and adjusting the flow rate of the cold air flowing through the air passage, and the refrigerating room floor parts are provided with the refrigerating room duct on the side of the refrigerating room duct. The refrigerating room return air passage port, which is the entrance of the refrigerating room return air passage through which the air after cooling the room passes when returning to the cooler room, is formed, and the refrigerating room is directly under the refrigerating room duct. A groove extending toward the air passage opening is formed.

According to the refrigerator according to the present invention, the refrigerating room floor component constituting the floor surface of the refrigerating room is formed with a groove extending from directly under the refrigerating room duct toward the refrigerating room return air passage port. That is, the groove forms a drainage route from directly under the refrigerating chamber duct to the refrigerating chamber return air passage. As a result, even if the damper is installed in the air passage below the refrigerating room floor parts, the dew condensation water on the joint surface between the refrigerating room duct and the refrigerating room floor parts flows through the groove and the damper is installed. It is drained to the return air passage of the refrigerating room outside the air passage. Therefore, it is possible to prevent dew condensation water from entering the air passage from the joint surface between the refrigerating chamber duct and the refrigerating chamber floor component and adhering to the damper. Further, since the drainage groove is formed integrally with the floor component of the refrigerating chamber, the material cost and the manufacturing cost can be suppressed.

It is a front schematic diagram of the refrigerator which concerns on embodiment of this invention. It is a schematic diagram when the vertical cross section of the refrigerator which concerns on embodiment of this invention is seen from the left side surface side. It is a top view of the refrigerator which concerns on embodiment of this invention. It is a figure which shows only the related parts of the main part in a refrigerator as seen from the arrow direction of FIG. It is a front schematic diagram which illustrated the sectional view of the refrigerator which concerns on embodiment of this invention. FIG. 5 is a cross-sectional view taken along the line YY in FIG. FIG. 5 is a cross-sectional view taken along the line XX of FIG. FIG. 5 is a cross-sectional view taken along the line WW in FIG. FIG. 5 is a cross-sectional view taken along the line U-U in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one.

Embodiment.
FIG. 1 is a front schematic view of a refrigerator 100 according to an embodiment of the present invention. FIG. 2 is a schematic view of the vertical cross section of the refrigerator 100 according to the embodiment of the present invention when viewed from the left side. FIG. 3 is a top view of the refrigerator 100 according to the embodiment of the present invention. FIG. 4 is a diagram showing only the related parts of the main part in the refrigerator 100 as viewed from the direction of the arrow in FIG. The broken line arrow shown in FIG. 4 indicates the flow of condensed water.

Hereinafter, the overall configuration of the refrigerator 100 according to the present embodiment will be described with reference to FIGS. 1 to 4. In the following description, terms indicating directions, such as "top", "bottom", "right", "left", "front", and "back", are appropriately used for ease of understanding. This is for illustration purposes only and these terms are not intended to limit the invention of the present application. Further, in the present embodiment, "upper", "lower", "right", "left", "front", "back" and the like are used in a state where the refrigerator 100 is viewed from the front.

The refrigerator 100 according to the present embodiment includes a heat insulating box body 100A having an open front surface and a storage space formed inside. The heat insulating box body 100A has a heat insulating material such as hard urethane foam between an outer box made of steel plate constituting the outer shell and an inner box made of thin-walled hard resin such as ABS resin arranged inside the outer box. It is constructed by filling.

The storage space formed inside the heat insulating box 100A is divided into a plurality of storage chambers for storing food by a plurality of partition members (not shown). The refrigerator 100 has a refrigerating chamber 101 arranged at the uppermost stage, an ice making chamber 102 arranged below the refrigerating chamber 101, and an ice making chamber 102 adjacent to the side of the ice making chamber 102 as a plurality of storage chambers in parallel. It is provided with an upper freezing chamber 103, which is arranged in. Further, it includes a vegetable compartment 104 arranged below the ice making chamber 102 and the upper freezing chamber 103, and a lowermost freezing chamber 105 arranged below the vegetable compartment 104.

The refrigerating chamber 101, the ice making chamber 102, and the upper freezing chamber 103 are vertically partitioned by a horizontal partition member. Further, the ice making chamber 102 and the upper freezing chamber 103 are partitioned to the left and right by a vertical partition member. Further, the ice making chamber 102, the upper freezing chamber 103, and the vegetable chamber 104 are vertically partitioned by a horizontal partition member. Further, the vegetable compartment 104 and the freezing chamber 105 are vertically partitioned by a horizontal partition member.

A rotary refrigerating room door 101a for opening and closing the opening is provided in the opening formed on the front surface of the refrigerating room 101. The opening formed on the front surface of the refrigerating chamber 101 may be provided with double doors that open from the center of the opening to the left and right sides. Further, in the openings formed in the front of the ice making chamber 102, the upper freezing chamber 103, the vegetable chamber 104, and the freezing chamber 105, a pull-out type upper freezing chamber door 102a and an ice making chamber door 103a for opening and closing the openings are opened. , Vegetable room door 104a, and freezing room door 105a, respectively.

The refrigerating chamber 101 is a storage chamber that maintains a temperature at which the contents do not freeze. The refrigerating chamber 101 is controlled to a temperature in the refrigerating temperature range (for example, about 2 to 5 ° C.). Further, the inside of the refrigerating room 101 is divided into a plurality of sections by a plurality of shelves 5e. Below the lowermost shelf 5e in the refrigerating chamber 101, a chilled chamber (for example, about 0 ° C.) lower than the temperature of the refrigerating chamber 101 (for example, about 2 to 5 ° C.) is provided. This chilled chamber is composed of an upper chilled chamber 6b and a lower chilled chamber 6c, which are partitioned by a chilled chamber partition 6a.

Further, a refrigerating room floor component 5f is provided below the chilled chamber, and the upper surface of the refrigerating room floor component 5f constitutes the floor surface of the refrigerating room 101.

The ice making chamber 102 is provided with an ice making machine in the room, and is a storage room for storing ice produced by the ice making machine. The ice making chamber 102 is set to a freezing temperature zone (for example, about −18 ° C.). The upper freezing chamber 103 is a storage chamber in which the temperature zone can be switched according to the intended use. The upper freezing chamber 103 is set to a freezing temperature zone (for example, about −18 ° C.) or a soft freezing temperature zone (for example, about −7 ° C.) by switching.

The vegetable compartment 104 is a storage chamber mainly for storing vegetables, and is controlled to a refrigerating temperature zone (for example, about 2 to 9 ° C.) like the refrigerating chamber 101. The freezing chamber 105 is a storage chamber set in a freezing temperature zone (for example, −18 ° C.).

Of course, the arrangement of each of the above storage chambers does not limit the present embodiment. For example, the ice making chamber 102 and the upper freezing chamber 103 are arranged side by side in parallel under the refrigerating chamber 101 provided in the upper stage, and the vegetable chamber provided below and below the ice making chamber 102 and the upper freezing chamber 103. The freezing chamber 105 may be arranged above the 104. The mid-freezer type in which the freezing chamber 105 is arranged between the so-called vegetable chamber 104 and the ice making chamber 102 and the upper freezing chamber 103 arranged in parallel on the left and right is a low temperature chamber (for example, the ice making chamber 102, the upper freezing chamber). 103 and the freezer room 105) are in close proximity. Therefore, by arranging each storage chamber in the mid-freezer type, a heat insulating material between the low temperature chambers becomes unnecessary, and heat leakage is small, so that energy saving and low cost can be achieved.

The refrigerator 100 according to the present embodiment includes a refrigerant circuit in which a refrigerant circulates, and the refrigerant circuit includes a compressor 17a, a condenser (not shown), a decompression device (not shown), and a cooler. It is equipped with 16a. The compressor 17a is arranged in a machine room 17 provided at the lowermost portion on the back side of the refrigerator 100. The cooler 16a is arranged in the cooler room 16 provided on the back side of the refrigerator 100 and above the machine room 17. The cooler chamber 16 is provided below the floor component 5f of the refrigerator compartment.

With respect to the flow of the refrigerant in the refrigerant circuit, the refrigerant compressed by the compressor 17a is condensed in the condenser. The refrigerant condensed in the condenser is depressurized in a decompression device such as a capillary tube or an expansion valve. The refrigerant decompressed by the depressurizing device is evaporated in the cooler 16a. Then, the gas around the cooler 16a is cooled by the endothermic action at the time of evaporation.

In the vicinity of the cooler 16a in the cooler chamber 16, a cold air circulation fan 16b for blowing cold air cooled around the cooler 16a to each storage chamber via an air passage described later is provided. Further, in the cooler chamber 16, a defrosting heater 16c for melting the frost adhering to the cooler 16a is provided. Further, at the bottom of the cooler chamber 16, a drip tray 16d is provided on which defrost water generated when the frost adhering to the cooler 16a melts drops.

A water guide pipe 17c for communicating the cooler room 16 and the machine room 17 is provided between the machine room 17 and the cooler room 16. Further, a drain pan 17b is provided above the compressor 17a in the machine room 17. The drain pan 17b stores the defrosted water dropped on the drip tray 16d via the water guide pipe 17c. The defrosted water stored in the drain pan 17b is heated by the heat of the compressor 17a, evaporated, and released into the atmosphere as steam.

The air passages for supplying the cold air cooled by the cooler 16a from the cooler chamber 16 to each storage chamber are the first air passage 21 formed in the refrigerating chamber duct 5d, the cooler chamber cover 16e, and the heat insulating box. It is composed of a second air passage 22 formed between the inner back surface of the 100A and a third air passage 23 formed in the duct portion 5h provided in the refrigerating room floor component 5f. Further, the return air passage for the air after cooling each storage chamber to return to the cooler chamber 16 is a return to the refrigerating chamber formed between the side surface portion of the cooler chamber 16 and the inner side surface of the heat insulating box body 100A. It is composed of an air passage 14, a vegetable compartment return air passage (not shown), and the like. In this embodiment, the above-mentioned air passage and return air passage are all provided on the back side of the refrigerator 100.

The second air passage 22 has a third air passage 23 formed in the duct portion 5h provided in the refrigerating room floor component 5f which is arranged above the cooler room cover 16e and constitutes the floor surface of the refrigerating room 101. It is connected to the first air passage 21 via. Therefore, the cold air blown out from the second air passage 22 by the cold air circulation fan 16b passes through the first air passage 21 after passing through the third air passage 23, and is distributed and supplied into the refrigerating chamber 101.

Further, a damper 5c is provided in the air passage from the cold air circulation fan 16b to the refrigerating chamber 101, and by opening and closing this damper 5c, the flow rate of the cold air flowing through the air passage is adjusted, and the refrigerating chamber is used. The temperature of 101 is adjusted. Further, the warm air after cooling the refrigerating chamber 101 returns to the cooler chamber 16 through the refrigerating chamber return air passage 14. Then, after being cooled again, it is redistributed to each storage chamber by the cold air circulation fan 16b.

In the present embodiment, the damper 5c is installed in the second air passage 22, but the damper 5c is installed in the first air passage 21 and the second air passage 22. , And in the third air passage 23.

FIG. 5 is a front schematic view showing a cross-sectional view of the refrigerator 100 according to the embodiment of the present invention. FIG. 6 is a cross-sectional view taken along the line YY of FIG. FIG. 7 is a cross-sectional view taken along the line XX of FIG. FIG. 8 is a sectional view taken along the line WW of FIG. FIG. 9 is a cross-sectional view taken along the line UU of FIG. The broken line arrow shown in FIG. 9 indicates the flow of condensed water.

Next, the main parts of the refrigerator 100 according to the present embodiment will be described with reference to FIGS. 3 to 9.
Conventionally, a gap is formed in the joint surface between the refrigerating chamber duct 5d and the refrigerating chamber floor component 5f, and attempts are made to eliminate the gap as much as possible by attaching a sealing member or fixing screws. However, there may be a minute gap between the refrigerating chamber duct 5d and the refrigerating chamber floor component 5f due to manufacturing variation or deterioration over time. Cold air leaks from such a gap, and when the leaked cold air comes into contact with the humid air in the refrigerating chamber 101, dew condensation occurs. Then, there is a problem that the generated dew condensation water accumulates on the floor component 5f of the refrigerating room and causes mold and germs to be generated, or adheres to the electric component and causes a failure and a malfunction. rice field.

Therefore, in the refrigerator 100 according to the present embodiment, as shown in FIGS. 4 and 6 to 9, a drainage groove 5f-1 is formed in the refrigerator compartment floor component 5f. Further, a refrigerating room return air passage port 5b, which is an entrance of the refrigerating room return air passage 14, is formed on the back side of the refrigerating room floor component 5f and on the right side of the refrigerating room duct 5d. The groove 5f-1 extends horizontally from directly below the refrigerating chamber duct 5d toward the refrigerating chamber return air passage port 5b. Further, the groove 5f-1 has a downward gradient of 2 degrees or more from directly under the refrigerating chamber duct 5d toward the refrigerating chamber return air passage port 5b, so that the dew condensation water easily flows through the groove 5f-1. There is.

The condensed water that has reached the refrigerating chamber return air passage port 5b from directly under the refrigerating chamber duct 5d passes through the refrigerating chamber return air passage 14 located below the refrigerating chamber return air passage opening 5b and is guided to the cooler chamber 16. Finally, it is stored in the drain pan 17b together with the defrost water. Then, the dew condensation water stored in the drain pan 17b is heated by the heat of the compressor 17a, evaporates, and is released into the atmosphere as water vapor.

Further, as shown in FIG. 4, power is supplied to the electric parts of the refrigerating chamber 101 on the side of the refrigerating chamber duct 5d and on the opposite side of the refrigerating chamber return air passage port 5b, that is, on the left side of the refrigerating chamber duct 5d. A connector box 5g for storing connectors for the purpose is arranged. That is, since the connector box 5g is arranged at a position away from the groove 5f-1 which is the drainage path, it is possible to prevent the occurrence of problems due to the adhesion of dew condensation water to the connector box 5g and the corrosion of the electrodes and the like. ..

By configuring the refrigerator 100 as described above, even if the damper 5c is installed below the refrigerating room floor part 5f, dew condensation water can be discharged from the joint surface between the refrigerating room duct 5d and the refrigerating room floor part 5f. It is possible to prevent it from entering and adhering to the damper 5c. Therefore, the damper 5c can be installed below the floor component 5f of the refrigerator compartment, and the highly reliable refrigerator 100 without any trouble due to the adhesion of condensed water can be obtained without reducing the food storage space of the refrigerator compartment 101. Obtainable. Further, since the drainage groove 5f-1 is integrally formed with the refrigerating room floor component 5f, the material cost and the manufacturing cost can be suppressed.

As described above, the refrigerator 100 according to the present embodiment has a heat insulating box body 100A having a refrigerating chamber 101 and a cooler chamber 16 inside, and air supplied to the refrigerating chamber 101 arranged in the cooler chamber 16. A cooler 16a for cooling is provided. Further, it is provided with a refrigerating chamber duct 5d forming a part of an air passage that guides the cold air cooled by the cooler 16a from the cooler chamber 16 to the refrigerating chamber 101. Further, a refrigerating room floor component 5f provided under the refrigerating room duct 5d and constituting the floor surface of the refrigerating room 101, and a damper 5c installed in the air passage and adjusting the flow rate of the cold air flowing through the air passage are provided. I have. The refrigerating chamber floor component 5f is an inlet of the refrigerating chamber return air passage 14 through which the air after cooling the refrigerating chamber 101 passes when returning to the cooler chamber 16 on the side of the refrigerating chamber duct 5d. The refrigerating room return air passage port 5b is formed, and a groove 5f-1 extending from directly below the refrigerating room duct 5d toward the refrigerating room return air passage port 5b is formed.

According to the refrigerator 100 according to the present embodiment, the refrigerating room floor component 5f constituting the floor surface of the refrigerating room 101 has a groove 5f- extending from directly below the refrigerating room duct 5d toward the refrigerating room return air passage port 5b. 1 is formed. That is, the groove 5f-1 forms a drainage path from directly below the refrigerating chamber duct 5d to the refrigerating chamber return air passage 14. As a result, even if the damper 5c is installed in the air passage below the refrigerating chamber floor component 5f, the condensed water on the joint surface between the refrigerating chamber duct 5d and the refrigerating chamber floor component 5f forms a groove 5f-1. It flows and is drained to the refrigerating chamber return air passage 14 outside the air passage where the damper 5c is installed. Therefore, it is possible to prevent dew condensation water from entering from the joint surface between the refrigerating chamber duct 5d and the refrigerating chamber floor component 5f and adhering to the damper 5c. Further, since the drainage groove 5f-1 is integrally formed with the refrigerating room floor component 5f, the material cost and the manufacturing cost can be suppressed.

Further, in the refrigerator 100 according to the present embodiment, the groove 5f-1 has a downward gradient from directly below the refrigerating chamber duct 5d toward the refrigerating chamber return air passage port 5b.

According to the refrigerator 100 according to the present embodiment, the groove 5f-1 has a downward gradient from directly below the refrigerating chamber duct 5d toward the refrigerating chamber return air passage port 5b, so that the dew condensation water flows into the groove 5f-1. Can be made easier to flow.

Further, in the refrigerator 100 according to the present embodiment, a drip tray 16d is provided at the bottom of the cooler chamber 16 on which water generated when the frost adhering to the cooler 16a melts drops. Further, a machine room 17 communicating with the cooler room 16 is provided below the cooler room 16, and a drain pan 17b for storing water dropped on the drip tray 16d is provided in the machine room 17. There is.

According to the refrigerator 100 according to the present embodiment, a machine room 17 communicating with the cooler room 16 is provided below the cooler room 16, and the machine room 17 has a bottom portion of the cooler room 16. A drain pan 17b for storing the dropped water is provided in the drain pan 17b. Therefore, the condensed water flowing through the groove 5f-1 is guided to the cooler chamber 16 via the refrigerating chamber return air passage 14, and is finally stored in the drain pan 17b together with the defrosted water, so that it is efficiently drained. can do.

Further, in the refrigerator 100 according to the present embodiment, connectors for supplying power to the electric parts of the refrigerating chamber 101 are stored on the side of the refrigerating chamber duct 5d and on the side opposite to the refrigerating chamber return air passage port 5b. A connector box of 5 g is arranged.

According to the refrigerator 100 according to the present embodiment, the connector box 5g is located on the side of the refrigerating room duct 5d and on the opposite side of the refrigerating room return air passage port 5b, that is, at a position away from the groove 5f-1 which is a drainage path. Is located in. Therefore, it is possible to prevent the occurrence of defects due to the adhesion of condensed water to the connector box 5 g and the corrosion of the electrodes and the like.

5b Refrigerator return air passage, 5c damper, 5d refrigerator duct, 5e shelf, 5f refrigerator floor parts, 5f-1 groove, 5g connector box, 5h duct, 6a chilled chamber partition, 6b upper chilled chamber, 6c lower chilled Room, 14 Refrigerator room return air passage, 16 cooler room, 16a cooler, 16b cold air circulation fan, 16c defrost heater, 16d drip tray, 16e cooler room cover, 17 machine room, 17a compressor, 17b drain pan, 17c Water guide pipe, 21 1st air passage, 22 2nd air passage, 23 3rd air passage, 100 refrigerator, 100A heat insulation box, 101 refrigerating room, 101a refrigerating room door, 102 ice making room, 102a upper freezing room door, 103 upper stage Freezer compartment, 103a ice chilled door, 104 vegetable compartment, 104a vegetable compartment door, 105 freezer compartment, 105a freezer compartment door.

Claims (4)

A heat insulating box with a refrigerator compartment and a cooler compartment inside,
A cooler arranged in the cooler chamber and cooling the air supplied to the refrigerator chamber,
A refrigerating room duct forming a part of an air passage that guides the cold air cooled by the cooler from the cooler room to the refrigerating room, and a refrigerating room duct.
The refrigerating room floor parts provided under the refrigerating room duct and constituting the floor surface of the refrigerating room,
It is equipped with a damper installed in the air passage and adjusting the flow rate of the cold air flowing through the air passage.
For the refrigerating room floor parts,
A refrigerating chamber return air passage port, which is an entrance of a refrigerating chamber return air passage through which air after cooling the refrigerating chamber passes when returning to the cooler chamber, is formed on the side of the refrigerating chamber duct. In addition, a refrigerator having a groove extending from directly under the refrigerating chamber duct toward the refrigerating chamber return air passage port. The refrigerator according to claim 1, wherein the groove has a downward gradient from directly below the refrigerating chamber duct toward the refrigerating chamber return air passage port. Below the cooler room, a machine room communicating with the cooler room is provided.
The refrigerator according to claim 1 or 2, wherein the machine room is provided with a drain pan for storing water dropped on the bottom of the cooler room. Claims 1 to 3 are arranged on the side of the refrigerating room duct and on the side opposite to the refrigerating room return air passage port, and a connector box for accommodating connectors for supplying power to the electric parts of the refrigerating room is arranged. The refrigerator according to any one of the items.

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