WO2012172800A1

WO2012172800A1 - Refrigerator

Info

Publication number: WO2012172800A1
Application number: PCT/JP2012/003876
Authority: WO
Inventors: 愼一堀井
Original assignee: パナソニック株式会社
Priority date: 2011-06-17
Filing date: 2012-06-14
Publication date: 2012-12-20
Also published as: CN103635765B; EP2722622A4; JP6028220B2; CN103635765A; JP2013019662A; EP2722622A1

Abstract

A refrigerator (30) comprises: a heat insulating box (31) formed by an inner box (33), an outer box (32), and a heat insulating material filled into the gap between the inner box (33) and the outer box (32); and a storage compartment provided in the heat insulating box (31). The refrigerator (30) also comprises: a partition wall (41) for dividing the storage compartment into upper and lower compartments; doors provided to the openings of the storage compartment and capable of being opened and closed; and a metal receiving member (42) provided to the side of the partition wall (41) which faces the doors. The refrigerator (30) also comprises: door gaskets (90) coming into close contact with the metal receiving member (42); and an independent space (50) at the openings, located at the front face openings of the storage compartment and independent of the spaces within the storage compartment.

Description

refrigerator

The present invention relates to a refrigerator, and more particularly to a structure for preventing condensation on the periphery of the front opening of the refrigerator.

A conventional refrigerator 100 will be described.

9 is a cross-sectional view showing the basic structure of the freezer compartment 125 of the conventional refrigerator 100, FIG. 10 is a perspective view showing the configuration of the refrigeration cycle piping of the conventional refrigerator 100, and FIG. It is a figure which shows the cross-section of the part which the partition wall 113 of 100 and the door 111 connect.

As shown in FIG. 9 and FIG. 11, a door gasket 112 is provided around the entire periphery of the inner periphery of the door 111. A metal receiving member 114 is provided on the front surface of the partition wall 113. The metal receiving member 114 that forms the receiving surface of the door gasket 112 and the door gasket 112 are brought into close contact with each other to prevent cold air from leaking to the outside.

A cooler 115 is installed on the back of the main body 131. The cool air generated by the cooler 115 is blown out from the discharge port 117 on the back side of the freezer compartment 125 by the fan 116 to cool the stored food.

The cold air that cools foods circulates as shown by the arrows in FIG. Specifically, the cold air reaches from the back side of the freezer compartment 125 to the front upper part of the

storage cases

118 and 119 and passes downward through the space between the inner wall of the door 111 and the front surfaces of the

storage cases

118 and 119. . Then, the cool air returns from the return duct 121 to the cooler 115 through the space between the bottom surface of the lower storage case 119 and the bottom wall of the freezer compartment 125.

In such a configuration, the front surface of the partition wall 113 formed between the freezing chamber 125 and the upper storage chamber 122 is cooled by the cold air reaching the upper front portion of the storage case 118. In order to prevent condensation on the front surface of the cooled partition wall 113 due to a temperature difference between the inside and outside, a heat radiating pipe 123 is provided. The heat radiating pipe 123 uses a high-temperature refrigerant pipe in a refrigeration cycle (not shown).

The front surface of the partition wall 113 is heated to a high temperature by the heat of the heat radiating pipe 123. Thereby, dew condensation in the metal receiving member 114 of the partition wall 113 can be prevented. However, in such a structure, since the air above the front part of the freezer compartment 125 will also be heated, there exists a subject that cooling efficiency falls.

In order to prevent this reduction in cooling efficiency, a seal member 124 indicated by a dotted line in FIG. 9 is provided in the space above the front of the storage case 118 near the partition wall 113 to shield the flow of cool air toward the door gasket 112 side. A mechanism has been proposed (see, for example, Patent Document 1).

In such a conventional configuration, as shown in FIG. 11, the upper and lower ends of the metal receiving member 114 extend from the surface of securing strength to the inside (rear side) of the storage such as the freezer compartment 125. This extended portion is close to the heat insulating material 113a, but is not in contact with the heat insulating material 113a due to consideration of insertion workability and structural reasons. There is a gap between the extended portion and the heat insulating material 113a.

For this reason, since a part of the heat radiation from the heat radiating pipe 123 easily enters a storage such as the freezer compartment 125 through the upper and lower ends of the metal receiving member 114, the efficiency of the cooling system is reduced. There is a possibility.

JP-A-10-96584

The present invention has been made in view of the above-described problems, and provides a refrigerator in which the surface of a metal receiving member is not easily condensed without deteriorating the efficiency of a cooling system.

The refrigerator of the present invention includes an inner box, an outer box, a heat insulating box formed by a heat insulating material filled between the inner box and the outer box, and a storage chamber provided in the heat insulating box. . Moreover, the partition wall which partitions a storage chamber up and down, the door provided in the opening part of the storage chamber, which can be opened and closed, and the metal receiving member provided in the door side of the partition wall are provided. Furthermore, the door gasket closely_contact | adhered to a metal receiving member and the opening part independent space independent of the space in a storage chamber are provided in the front opening part of the storage chamber.

Thus, by providing the opening independent space independent of the space in the storage chamber in the front opening of the storage chamber, the opening independent space can suppress the heat leak of the storage chamber. Furthermore, it is possible to suppress condensation by suppressing the cooling of the metal receiving member provided on the door side front portion of the partition wall. Therefore, it is possible to provide a refrigerator in which the surface of the metal receiving member is unlikely to condense without reducing the efficiency of the cooling system.

FIG. 1A is a cross-sectional view seen from the side showing the internal structure of the refrigerator according to the first embodiment of the present invention. FIG. 1B is a front view showing a structure viewed from the front of the refrigerator according to the first embodiment of the present invention. FIG. 2 is a front view schematically showing the configuration near the cooling chamber of the refrigerator in the first embodiment of the present invention. FIG. 3 is an exploded perspective view of the refrigerator compartment device for the refrigerator according to the first embodiment of the present invention. FIG. 4 is a diagram showing a flow of cold air in the refrigerator compartment in the refrigerator according to the first embodiment of the present invention. FIG. 5A is a perspective view for schematically explaining the arrangement of the heat radiating pipes of the refrigerator in the first embodiment of the present invention. FIG. 5B is a perspective view for schematically explaining the arrangement of the heat radiating pipes of the refrigerator in the first embodiment of the present invention. FIG. 5C is a perspective view for schematically explaining the heat dissipating pipe arrangement of the refrigerator in the second embodiment of the present invention. FIG. 5D is a perspective view for schematically explaining the heat dissipating pipe arrangement of the refrigerator in the second embodiment of the present invention. FIG. 6A is a front view showing the structure of the refrigerator in the third embodiment of the present invention. FIG. 6B is a sectional view seen from the side, showing the internal structure of the refrigerator according to the third embodiment of the present invention. FIG. 7A is a front view showing the structure of the refrigerator in the fourth embodiment of the present invention. FIG. 7B is a cross-sectional view seen from the side, showing the internal structure of the refrigerator according to the fourth embodiment of the present invention. FIG. 7C is a perspective view schematically showing the heat dissipating pipe arrangement of the refrigerator in the fourth embodiment of the present invention. FIG. 7D is a perspective view schematically showing the heat dissipating pipe arrangement of the refrigerator in the fourth embodiment of the present invention. FIG. 8A is a front view showing the structure of the refrigerator in the fifth embodiment of the present invention. FIG. 8B is a sectional view seen from the side, showing the internal structure of the refrigerator according to the fifth embodiment of the present invention. FIG. 9 is a cross-sectional view showing a basic structure of a freezer compartment of a conventional refrigerator. FIG. 10 is a perspective view showing a configuration of a refrigeration cycle pipe of a conventional refrigerator. FIG. 11 is a diagram showing a cross-sectional structure of a portion where a partition wall and a door of a conventional refrigerator are connected.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to these embodiments.

(First embodiment)
The refrigerator 30 in the 1st Embodiment of this invention is demonstrated.

FIG. 1A is a cross-sectional view seen from the side showing the internal structure of the refrigerator 30 in the first embodiment of the present invention, and FIG. 1B is a front view showing the structure seen from the front of the refrigerator 30. . In FIG. 1B, doors, gaskets, and the like are omitted. Moreover, the arrow in drawing shows the circulation path | route of cold air.

The refrigerator 30 includes a heat insulating box 31, a refrigerator compartment 35 and a freezer compartment 37 as storage rooms, a partition wall 41, a refrigerator compartment door 38 and a freezer compartment door 40 as doors, a metal receiving member 42, and a door gasket. 90 and the opening independent space 50.

The heat insulation box 31 is formed of an inner box 33, an outer box 32, and a heat insulating material filled between the inner box 33 and the outer box 32.

The storage room is provided in the heat insulation box 31. The partition wall 41 partitions the storage chamber up and down. The door is provided at the front opening of the storage chamber and is openable and closable. The metal receiving member 42 is provided on the door side of the partition wall 41.

The door gasket 90 is in close contact with the metal receiving member 42. The opening independent space 50 is provided in the front opening of the storage chamber independently of the space in the storage chamber.

Thereby, the opening independent space 50 can suppress the heat leak of the storage chamber, and can suppress the condensation of the metal receiving member 42 provided on the door-side front surface portion of the partition wall 41. .

As shown in FIGS. 1A and 1B, the heat insulation box 31 of the refrigerator 30 is composed of an outer box 32 mainly using a steel plate and an inner box 33 formed of a resin such as ABS.

The inside of the heat insulating box 31 is filled with a foam heat insulating material 34 which is a heat insulating material using, for example, hard foam urethane or the like. The inside of the heat insulation box 31 is insulated from the surroundings and divided into a plurality of storage rooms.

The refrigerator compartment 35 is arranged at the upper part of the heat insulating box 31 and the freezer compartment 37 is arranged at the lower part.

A refrigerating room door 38 is supported at the front opening of the refrigerating room 35, and a freezing room door 40 is pivotally supported at the front opening of the freezing room 37 so that the front opening of each storage room can be opened and closed.

The refrigerated room 35 is a storage room that is normally set to 1 ° C. to 5 ° C. with the temperature not frozen as a lower limit for refrigerated storage, and the freezer room 37 is a storage room that is set to a freezing temperature zone. The freezer compartment 37 is normally set at −22 ° C. to −15 ° C. for frozen storage, but should be set at a low temperature of, for example, −30 ° C. or −25 ° C. to improve the frozen storage state. There is also.

The refrigerator compartment 35 and the freezer compartment 37 are partitioned vertically by a partition wall 41. A door gasket 90 is provided over the entire periphery of the inner periphery of each of the refrigerator compartment door 38 and the freezer compartment door 40. By the door gasket 90, the metal receiving member 42 provided on the front surface side of the outer box 32 and the front surface of the partition wall 41 and the door (the refrigerator compartment door 38 and the freezer compartment door 40) are brought into close contact with each other so that the cold air is exposed to the outside. Prevents leakage.

In addition, a frontage sealing member 91 is disposed inside the door gasket 90 on the inner surface of the freezer compartment door 40 so as to be in contact with the wall surface in the storage chamber such as the inner box 33 and the partition wall 41. Between the door gasket 90 and the front-opening seal member 91, an opening independent space 50 that is a space independent of both the storage compartment space of the freezing compartment 37 and the outside is provided. As shown in FIG. 1B, the opening independent space 50 is formed at the inner peripheral edge portion of the freezer compartment door 40 so as to surround the frontage seal member 91 when viewed from the front.

As shown in FIG. 1A, a cooling chamber 43 for generating cold air is provided on the back surface of the freezing chamber 37, and a cooler 44 is disposed therein. The cooling chamber 43 is insulated from the freezing chamber 37 by a coil cover 45.

FIG. 2 is a front view schematically showing a configuration in the vicinity of the cooling chamber 43 of the refrigerator 30 according to the first embodiment of the present invention.

As shown in FIG. 2, a fan 46 for forcibly blowing the generated cold air is disposed above the cooler 44. Below the cooler 44, a defrost heater 47 that defrosts frost and ice adhering to the cooler 44 is provided. The defrost heater 47 is, for example, a glass tube heater made of glass. In particular, when a hydrocarbon-based refrigerant gas is used as the refrigerant, a double glass tube heater in which glass tubes are formed in a double manner is used as an explosion-proof measure.

The coil cover 45 is formed of a resin decorative plate and an inscoil cover formed of a heat insulating material such as a styrene material.

The coil cover 45 is provided side by side with the cooler 44, and a cool air return passage 71 that is partitioned from the cooler 44 by a partition member 75 and a back wall of the cooling chamber 43 is formed. Cold air that has passed through the refrigerator compartment return communication port of the partition wall 41 is introduced into the cold air return passage 71.

FIG. 3 is an exploded perspective view of the refrigerator compartment duct device 80 of the refrigerator 30 according to the first embodiment of the present invention.

The refrigerator compartment duct device 80 is disposed on the back of the refrigerator compartment 35. The refrigerator compartment duct device 80 and the inner box 33 form an air passage for the refrigerator compartment 35. In addition, the lower end of the refrigerator compartment duct device 80 is coupled to the partition wall 41, and the refrigerator compartment 35 is refrigerated by circulating the refrigerator compartment discharge cold air from the refrigerator compartment 43 and the return cold air from the refrigerator compartment 35. The belt is controlled.

The refrigerator compartment duct device 80 is formed of a refrigerator compartment duct member 81 formed of foamed polystyrene and a resin refrigerator compartment duct decorative plate 86 that covers the front surface of the refrigerator compartment duct member 81. A seal foam member 82 is attached to the seal portion inside the refrigerator compartment duct device 80.

FIG. 4 is a diagram showing a flow of cold air in the refrigerator compartment 35 in the refrigerator 30 according to the first embodiment of the present invention.

A cold room duct device 80 is attached to the back of the cold room 35. The cold air 11 discharged from the outlet of the refrigerator compartment 35 through the refrigerator compartment air duct 48 circulates in the refrigerator compartment 35. Then, the cold air 12 circulated in the refrigerating chamber 35 returns to the cooler 44 through the refrigerating chamber return duct 51 from a return port provided on the lower back surface of the refrigerating chamber 35.

5A and 5B are perspective views for schematically explaining the arrangement of the heat radiating pipes 49 of the refrigerator 30 in the first embodiment of the present invention.

As shown in FIGS. 5A and 5B, in the vicinity of the metal receiving member 42, a heat radiating pipe 49, which is a heating unit, is disposed in order to prevent condensation on the outer surface of the storage chamber when the outside air temperature is high. Has been. The heat radiating pipe 49 uses a high-temperature refrigerant pipe in a refrigeration cycle (not shown), and heats the metal receiving member 42 to a high temperature by the heat.

The heat radiating pipe 49 is fixed in contact with the metal receiving member 42 and the front portion of the outer box 32 on the opening front (periphery portion of the opening) side of the freezer compartment 37.

The refrigerator 30 of the present embodiment is also provided with a second heat radiating pipe 93. The second heat radiating pipe 93 is fixed so as to contact the metal receiving member 42 with emphasis. Specifically, the second heat radiating pipe 93 is in contact with the metal receiving member 42 but is not in contact with the front portion of the outer box 32.

The operation and action of the refrigerator 30 configured as described above will be described.

A part of the cold air generated by the cooler 44 in the cooling chamber 43 is forcibly blown into the freezer compartment 37 in front by the fan 46. The freezer compartment 37 is cooled by the cold air discharged from the discharge port of the coil cover 45.

The cold air circulated in the freezer compartment 37 is guided to the lower part of the cooler 44 through a return port opened at the lower part of the coil cover 45, and heat is exchanged by the cooler 44. Then, the fresh cool air repeats circulation by the fan 46 again. Thereby, the inside of the freezer compartment 37 is cooled to an appropriate temperature by control using the freezer compartment temperature sensor.

On the other hand, the cold air discharged above the fan 46 is guided from the cold air discharge port of the coil cover 45 to the cold room duct device 80 through the communication hole 18 of the partition wall 41. When the refrigerator temperature sensor determines that the internal temperature is equal to or higher than the set temperature, the damper is opened, and cold air is discharged from the outlet of the refrigerator compartment 35 through the refrigerator compartment air duct 48, thereby cooling the room. To do.

The cold air circulated in the refrigerator compartment 35 is guided to the return port. The air in the refrigerator compartment 35 and the humid air contained in the stored product passes through the refrigerator compartment return duct 51 of the refrigerator compartment duct device 80, and is formed by the coil cover 45 and the rear wall of the cooling compartment 43. It is introduced into the return passage 71. The air introduced into the cool air return passage 71 is guided from the cool air return port 77 to the lower part of the cooler 44, heat exchange is performed by the cooler 44, and fresh cool air is forcibly blown by the fan 46 again.

As described above, in the refrigerator 30 according to the present embodiment, the cool air is forcibly blown to the refrigerating room air duct 48 communicating with the cooler 44 by the fan 46, and the refrigerating room is passed through the refrigerating room air duct 48 in the refrigerating room duct device 80. Cold air is discharged to 35. Moreover, the opening and closing of the damper is controlled based on the refrigerator temperature sensor. Thereby, even if the refrigerator compartment 35 exists in the position away from the cooler 44, the room can be controlled to preset temperature.

Further, the cooling of the refrigerating chamber 35 is also performed by cold air generated from the side surface or from the upper surface by a discharge opening provided in the refrigerating chamber duct member 81 or the like.

The opening independent space 50 formed by the door gasket 90 and the front seal member 91 is a space independent of the storage room space of the freezing room 37 and the outside. Thereby, it can suppress that the front part of the outer case 32 in the opening front side of the metal receiving member 42 and the freezer compartment 37 is directly cooled by the cold air of the freezer compartment 37. Therefore, it is possible to suppress the occurrence of condensation on the metal receiving member 42 and the front portion of the outer box 32 on the opening front side of the freezer compartment 37.

In addition, compared with the metal receiving member 42, since the front part side of the outer box 32 at the opening front of the freezer compartment 37 is not easily affected by the cool air in the storage compartment, the amount of heat necessary for suppressing the occurrence of condensation is small. .

In the refrigerator 30 of the present embodiment, as shown in FIGS. 5A and 5B, the refrigerant circulation of the heat radiating pipe 49 can be switched to the second heat radiating pipe 93 using the switching valve 92. For example, the heat radiating pipe 49 is used when there is a lot of condensation, while it can be switched to the second heat radiating pipe 93 when there is not much condensation. Accordingly, the opening independent space 50 allows the freezer compartment 37 to have a heat quantity that suppresses the occurrence of dew condensation in the front portion of the outer box 32 on the opening front side of the freezer compartment 37 that is relatively less affected by the temperature in the storage compartment. Heat leakage from the front portion of the outer box 32 on the opening front side into the storage chamber can be suppressed.

In addition, the above-mentioned heat pipe switching function is not essential. Even if it does not have this function, it is possible to effectively suppress the occurrence of condensation on the metal receiving member 42 and the front portion of the outer box 32 on the opening front side of the freezer compartment 37.

(Second Embodiment)
Next, the refrigerator 20 in the 2nd Embodiment of this invention is demonstrated.

FIG. 5C and FIG. 5D are perspective views for schematically explaining the heat dissipating pipe arrangement of the refrigerator 20 in the second embodiment of the present invention.

Since the configuration of the refrigerator 20 of the present embodiment is the same as the configuration of the refrigerator 30 described in the first embodiment, the description of the common portions is omitted.

As shown in FIG. 5C and FIG. 5D, the refrigerator 20 includes a bypass pipe 94 in addition to the heat radiating pipe 49. As with the refrigerator 30 described in the first embodiment, the heat radiating pipe 49 is fixed in contact with the metal receiving member 42 and the front portion of the outer box 32 on the opening front side of the freezer compartment 37. On the other hand, the bypass pipe 94 is not in contact with any of the metal receiving member 42 and the front portion of the outer box 32. Further, the switching of the refrigerant in the heat radiating pipe 49 and the bypass pipe 94 by the switching valve 92 is the same as in the first embodiment.

The operation and action of the refrigerator 20 configured as described above will be described.

Natural convection occurs in the opening independent space 50 which is an independent space different from the storage room. That is, the air cooled by the cold air discharged from the freezer compartment 37 is lowered in the opening independent space 50.

In particular, when the inside of the freezer compartment 37 is not cooled, that is, when cold air is not discharged into the freezer compartment 37, the temperature distribution in the freezer compartment 37 is not uniform. The temperature distribution in the part-independent space 50 is further uneven. When the low temperature air in the opening independent space 50 is lowered, the temperature in the vicinity of the metal receiving member 42 is increased, so that the speed at which the metal receiving member 42 is cooled is reduced. As a result, the amount of heat required to bring the metal receiving member 42 to a temperature at which no condensation occurs is reduced. That is, the amount of heat of the heat radiating pipe 49 required to bring the metal receiving member 42 to a temperature at which no condensation occurs is reduced.

For the reason described above, in this embodiment, as shown in FIGS. 5C and 5D, the refrigerant circulation between the bypass pipe 94 that does not pass through the vicinity of the opening front of the storage chamber and the heat radiating pipe 49 is performed using the switching valve 92. Control the temperature by switching. Thereby, from the viewpoint of preventing dew condensation, it is possible to switch to the bypass pipe 94 when neither the surface portion of the outer box 32 nor the metal receiving member 42 needs to be heated. Therefore, the heat leak from the both sides of the opening front of the freezer compartment 37 and the metal receiving member 42 to the storage compartment can be efficiently suppressed.

(Third embodiment)
Next, the refrigerator 16 in the 3rd Embodiment of this invention is demonstrated.

FIG. 6A is a front view showing the structure of the refrigerator 16 according to the third embodiment of the present invention, and FIG. 6B is a sectional view showing the internal structure of the refrigerator 16 as seen from the side. In FIG. 6A, doors, gaskets, and the like are omitted. Moreover, the arrow in drawing shows the circulation path | route of cold air.

As shown in FIG. 6A and FIG. 6B, the refrigerator 16 has a refrigerating room 35 and a freezing room 37 vertically divided by a partition wall 41. A door gasket 90 is provided over the entire periphery of the inner periphery of the refrigerator compartment door 38 and the freezer compartment door 40. By the door gasket 90, the metal receiving member 42 provided on the front surface side of the outer box 32 and the front surface of the partition wall 41 and the door (the refrigerator compartment door 38 and the freezer compartment door 40) are brought into close contact with each other so that the cold air is exposed to the outside. Prevents leakage.

In addition, a frontage sealing member 91 is disposed inside the door gasket 90 on the inner surface of the freezer compartment door 40 so as to be in contact with the wall surface in the storage chamber such as the inner box 33 and the partition wall 41. Between the door gasket 90 and the front-opening seal member 91, an opening independent space 50 that is a space independent of both the storage compartment space of the freezing compartment 37 and the outside is provided. As shown in FIG. 6A, the opening independent space 50 is formed so as to surround the front seal member 91 at the inner peripheral edge portion of the freezer compartment door 40 when viewed from the front. These configurations are the same as the configuration of the refrigerator 30 described in the first embodiment.

The opening independent space 50 of the refrigerator 16 in the present embodiment is separated from the storage room space by a space communication inlet air passage 95 that communicates with the refrigerator compartment 35 and a space communication outlet air passage 96 that communicates with the periphery of the cooling chamber 43. Partially communicated. The space communication inlet air passage 95 and the space communication outlet air passage 96 are spaces that are insulated from the storage room by heat insulating members such as the foam heat insulating material 34 and the partition wall 41. As shown in FIG. 6A, the space communication inlet air passage 95 is provided on both sides of the lower portion of the inner box 33 in the refrigerator compartment 35.

The operation and action of the refrigerator 16 configured as described above will be described.

As described in the first embodiment, also in this embodiment, a part of the cold air generated by the cooler 44 of the cooling chamber 43 is forcibly blown into the front freezer compartment 37 by the fan 46. Is done. The freezer compartment 37 is cooled by the cold air discharged from the discharge port of the coil cover 45.

The cold air circulated in the freezer compartment 37 is guided to the lower part of the cooler 44 through a return port opened at the lower part of the coil cover 45, and heat is exchanged by the cooler 44. Then, fresh cold air is again circulated by the fan 46. Thereby, the inside of the freezer compartment 37 is cooled to an appropriate temperature by control using the freezer compartment temperature sensor.

On the other hand, the cold air discharged above the fan 46 is guided from the cold air discharge port of the coil cover 45 to the cold room duct device 80 through the communication hole 18 of the partition wall 41. When it is determined by the cold room temperature sensor that the internal temperature is equal to or higher than the set temperature, the damper is opened, cold air is discharged from the discharge port of the cold room 35 through the cold room air duct 48, and the room is cooled. To do.

The cold air circulated in the refrigerator compartment 35 is guided while being diverted to the return port and the space communication inlet air passage 95. There are two types of return cold air. One is a path in which the air that has reached the temperature in the refrigerating chamber 35 passes through the refrigerating chamber return duct 51, passes through the cool air return passage 71, and is led from the cold air return port 77 to the lower portion of the cooler 44. The other is a path that passes through the opening independent space 50 through the space communication inlet air passage 95 and is led from the cold air return port 77 to the lower part of the cooler 44 through the space communication outlet air passage 96. In any path, the cool air that has returned to the lower part of the cooler 44 is heat-exchanged in the cooler 44, and fresh cool air is forcibly blown by the fan 46 again.

Thus, in the present embodiment, the return cold air from the refrigerator compartment 35 circulates in the opening independent space 50. Thereby, it is possible to suppress the metal receiving member 42 from being directly cooled by the cold air in the freezer compartment 37 and to maintain the inside of the opening independent space 50 in a refrigeration temperature zone higher than the freezing temperature zone. Become. For this reason, it is possible to suppress the occurrence of condensation on the metal receiving member 42 and the front portion of the outer box 32 on the opening front side of the freezer compartment 37.

Furthermore, in the first embodiment and the second embodiment, the heat leakage into the storage chamber can be achieved by using the temperature control means by switching the heat radiating pipe 49 described with reference to FIGS. 5A to 5D. Can be suppressed.

In the present embodiment, the description has been given using the example in which the cold air in the refrigerating temperature zone of the refrigerating chamber 35 is circulated in the opening independent space 50. Thereby, the temperature in the opening independent space can be set as a refrigeration temperature zone, and the ambient temperature of the metal receiving member 42 can be efficiently increased using the cold air in the refrigeration chamber 35. However, the present invention is not limited to this example. By circulating air in a temperature range higher than the temperature range of the storage chamber into the opening independent space 50, the ambient temperature of the metal receiving member 42 can be increased and condensation can be reduced.

(Fourth embodiment)
Next, the refrigerator 60 in the 4th Embodiment of this invention is demonstrated.

FIG. 7A is a front view showing the structure of the refrigerator 60 according to the fourth embodiment of the present invention, and FIG. 7B is a cross-sectional view showing the internal structure of the refrigerator 60 as seen from the side. FIG. 7D is a perspective view schematically showing the heat dissipating pipe arrangement of the refrigerator 60. In FIG. 7A, doors, gaskets, and the like are omitted. Moreover, the solid line arrow in the drawing indicates the circulation path of the cold air.

As shown in FIG. 7A and FIG. 7B, the refrigerator 60 has a refrigerator compartment 35 and a freezer compartment 37 partitioned vertically by a partition wall 41. A door gasket 90 is provided over the entire periphery of the inner periphery of each of the refrigerator compartment door 38 and the freezer compartment door 40. By the door gasket 90, the metal receiving member 42 provided on the front surface side of the outer box 32 and the front surface of the partition wall 41 and the door (the refrigerator compartment door 38 and the freezer compartment door 40) are brought into close contact with each other so that the cold air is exposed to the outside. Prevents leakage.

In addition, a frontage sealing member 91 is disposed inside the door gasket 90 on the inner surface of the freezer compartment door 40 so as to be in contact with the wall surface in the storage chamber such as the inner box 33 and the partition wall 41. Between the door gasket 90 and the front-opening seal member 91, an opening independent space 50 that is a space independent of both the storage compartment space of the freezing compartment 37 and the outside is provided. As shown in FIG. 7A, the opening independent space 50 is formed so as to surround the frontage sealing member 91 in the peripheral portion inside the freezer compartment door 40 when viewed from the front. These configurations are the same as the configuration of the refrigerator 30 described in the first embodiment.

In the refrigerator 60 of the present embodiment, a lower heat source member 97 that generates a temperature equal to or higher than the outside air temperature is disposed around the lower side of the opening independent space 50.

Moreover, in this Embodiment, the opening part independent space 50 is provided in the periphery of the front-surface opening part of a store room, The space where at least any one part of right and left of the opening part independent space 50 connected from the upper side to the lower side. It explains as being.

Accordingly, air having a relatively high temperature rises in the opening independent space 50 and air having a relatively low temperature falls in the space, so that the temperature around the metal receiving member 42 can be efficiently raised. . However, the present invention is not limited to this example. For example, both the left and right sides of the opening independent space 50 may have a space that does not communicate from the upper side to the lower side.

About the refrigerator 60 comprised as mentioned above, the operation | movement and an effect | action are demonstrated.

The lower-side heat source member 97 conducts heat to a bottom metal member (not shown) having a function of forming a close contact surface of the door gasket 90 in the same manner as the metal receiving member 42 as well as securing the strength of the bottom, thereby making the opening independent. Heat is transferred into the space 50.

The heat of the lower heat source member 97 transmitted into the opening independent space 50 warms the air in the opening independent space 50. The warmed air rises by natural convection in the opening independent space 50 (dotted line arrow in FIG. 7A). The warmed air that has risen rises to the vicinity of the metal receiving member 42 in the opening independent space 50. Thereby, it is possible to suppress the occurrence of condensation in the front portion of the outer box 32 on the opening front side of the metal receiving member 42 and the freezer compartment 37.

Optimum for the lower heat source member 97 so as to ensure a temperature higher than the temperature necessary for suppressing the occurrence of dew condensation on the metal receiving member 42 and the front portion of the outer box 32 on the opening front side of the freezer compartment 37. Control of the amount of heat.

Further, by using the temperature control means by switching the heat radiating pipe 49 shown in FIGS. 5A to 5D, heat leak into the storage chamber can be suppressed.

Furthermore, as shown in FIG. 7C and FIG. 7D, by using the bottom heat radiating pipe 98 disposed on the bottom member constituting the bottom of the heat insulating box 31 as the lower heat source member 97, effective use of heat radiation is possible. Become.

If it is difficult to prevent dew condensation on both sides of the surface portion of the freezer compartment 37 and the metal receiving member 42 only by the amount of heat of the lower heat source member 97, a heat radiating pipe 49 can be used together. In such a case, the switching valve 92 is used to perform temperature control by switching (or using together) refrigerant circulation between the bottom heat radiating pipe 98 and the heat radiating pipe 49. This prevents condensation on both sides of the surface of the freezing chamber 37 and the metal receiving member 42 while minimizing heat leakage from the both sides of the freezing chamber 37 of the heat radiation pipe 49 and the metal receiving member 42 to the storage chamber. be able to.

(Fifth embodiment)
Next, the refrigerator 17 in the 5th Embodiment of this invention is demonstrated.

FIG. 8A is a front view showing the structure of the refrigerator 17 in the fifth embodiment of the present invention, and FIG. 8B is a sectional view showing the internal structure of the refrigerator 17 as seen from the side. In FIG. 8A, doors, gaskets, and the like are omitted. Moreover, the arrow in drawing shows the circulation path | route of cold air.

As shown in FIG. 8A and FIG. 8B, the refrigerator 17 has a refrigerating room 35 and a freezing room 37 vertically divided by a partition wall 41. A door gasket 90 is provided over the entire periphery of the inner periphery of each of the refrigerator compartment door 38 and the freezer compartment door 40. By the door gasket 90, the metal receiving member 42 provided on the front surface side of the outer box 32 and the front surface of the partition wall 41 and the door (the refrigerator compartment door 38 and the freezer compartment door 40) are brought into close contact with each other so that the cold air is exposed to the outside. Prevents leakage.

In addition, a frontage sealing member 91 is disposed inside the door gasket 90 on the inner surface of the freezer compartment door 40 so as to be in contact with the wall surface in the storage chamber such as the inner box 33 and the partition wall 41. Between the door gasket 90 and the front-opening seal member 91, an opening independent space 50 that is a space independent of both the storage compartment space of the freezing compartment 37 and the outside is provided. As shown in FIG. 8A, the opening independent space 50 is formed so as to surround the front-end seal member 91 at the inner peripheral edge portion of the freezer compartment door 40 when viewed from the front. These configurations are the same as the configuration of the refrigerator 30 described in the first embodiment.

The refrigerator 17 of the present embodiment has three or more storage rooms. In the example shown in FIGS. 8A and 8B, the refrigerator 17 includes a third storage chamber 13. In addition, the freezing chamber 37 and the third storage chamber 13 are vertically partitioned by the second partition wall 99. A door gasket 90 is also provided around the entire periphery of the inner periphery of the third storage chamber door 14. The door gasket 90 causes the metal receiving member 42 provided on the surface side of the outer box 32 and the front surface of the second partition wall 99 and the third storage chamber door 14 to be in close contact with each other, so that cold air leaks to the outside. Is preventing.

The operation and action of the refrigerator 17 configured as described above will be described.

Similarly, in the third storage chamber 13, the cool air generated by the cooler 44 of the cooling chamber 43 cools the inside of the third storage chamber 13 through the third storage chamber duct 15. Thereafter, the cold air is led to the lower part of the cooler 44 through a return port opened at the lower part of the coil cover 45, heat exchange is performed by the cooler 44, and fresh cold air is circulated again by the fan 46.

Also in this embodiment, similarly to the other embodiments, heating using the heat radiating pipe 49 and switching control of refrigerant circulation between the heat radiating pipe 49 using the switching valve 92 and the other heat radiating pipe are performed. It is also possible.

Thus, even in the refrigerator 17 having three or more storage rooms, it is possible to suppress the occurrence of condensation in the front portion of the outer box 32 on the opening front side of the metal receiving member 42 and the freezing room 37.

In each embodiment, the front door sealing member 91 is provided on the inner surface of the refrigerator door so as to come into contact with the wall surface in the storage chamber, and the opening is independent between the front door sealing member 91 and the door gasket 90. It demonstrated using the example in which the space 50 was formed. In this case, the opening independent space 50 can be realized with a simple configuration, but the present invention is not limited to this example. The opening independent space 50 can be formed between the door gasket 90 and another member, or the opening independent space 50 can be formed using another member.

In each embodiment, the opening independent space has been described using an example in which the opening independent space is provided in the front opening of the freezing room 37 which is a storage room set in the freezing temperature zone. In this case, the effect of suppressing heat leakage from the storage room in the freezing temperature zone can be enhanced, and the occurrence of condensation on the metal receiving member 42 can be suppressed. However, the present invention is not limited to this example. If it is a storage in a temperature zone where condensation occurs on the surface of the metal receiving member 42 and the outer box 32 provided on the front surface of the partition wall 41, it is possible to reduce condensation by providing the opening independent space 50, Applicable.

Furthermore, in each embodiment, the example which provided the thermal radiation pipe 49 as a heating part in the vicinity of the opening part independent space 50 was shown. Thereby, the temperature in opening independent space can be raised reliably. However, the present invention is not limited to this example. Even when the vicinity of the opening independent space 50 is heated using other heating means, the same dew condensation preventing effect can be obtained.

As described above, according to the present invention, it is possible to provide a refrigerator in which the surface of the metal receiving member is not easily condensed without deteriorating the efficiency of the cooling system. Therefore, the present invention is useful because it can be applied to any refrigerator or the like having a cooling function.

11, 12 Cold 13 Third storage room 14 Third storage room door 15 Third

storage room duct

16, 17, 20, 30, 60 Refrigerator 18 Communication hole 31 Heat insulation box 32 Outer box 33 Inner box 34 Foam insulation Materials 35 Refrigerating room 37 Freezing room 38 Refrigerating room door 40 Freezing room door 41 Partition wall 42 Metal receiving member 43 Cooling room 44 Cooler 45 Coil cover 46 Fan 47 Defrosting heater 48 Refrigerating room air duct 49 Radiation pipe 50 Opening independent space 51 Refrigeration room return duct 71 Cold air return passage 75 Partition member 80 Refrigeration room duct device 81 Refrigeration room duct member 82 Seal foam member 86 Refrigeration room duct decorative plate 90 Door gasket 91 Front seal member 92 Switching valve 93 Second heat radiation pipe 94 Bypass Pipe 95 Spatial communication entrance air passage 96 Spatial communication exit Road 97 lower heat source member 98 bottom radiating pipe 99 and the second partition wall

Claims

An inner box, an outer box, and a heat insulating box formed by a heat insulating material filled between the inner box and the outer box;
A storage room provided in the heat insulation box,
A partition wall that divides the storage chamber vertically;
A door that is provided at the front opening of the storage room and can be opened and closed;
A metal receiving member provided on the door side of the partition wall;
A door gasket in close contact with the metal receiving member;
The refrigerator provided with the opening part independent space independent of the space in the said storage room in the said front opening part of the said storage room.
A frontage sealing member is provided on the inner surface of the door so as to come into contact with the wall surface in the storage chamber,
The refrigerator according to claim 1, wherein the opening independent space is formed between the front seal member and the door gasket.
The opening independent space is provided at the periphery of the front opening of the storage chamber,
The refrigerator according to claim 2, wherein at least one of the left and right sides of the opening independent space is a space communicating from the upper side to the lower side.
The refrigerator according to claim 2, wherein the opening independent space is provided in the front opening of the storage room set in a freezing temperature zone.
The refrigerator according to claim 4, wherein cold air in a temperature range higher than the freezing temperature range is circulated in the opening independent space.
The refrigerator according to any one of claims 1 to 5, further comprising a heating unit in the vicinity of the opening independent space.