JP5533074B2 - refrigerator - Google Patents

Description

  The present invention relates to a structure in which an interior lamp is arranged in a duct provided in a refrigerator compartment of a refrigerator.

  Conventionally, in this type of refrigerator, an interior lighting lamp is provided in a part of a duct provided on the back surface of the refrigerator compartment (see, for example, Patent Document 1).

  FIG. 6 shows a partial cross-section of a conventional refrigerator described in the public relations. As shown in FIG. 6, the refrigerator compartment 6 disposed in the upper part of the refrigerator 2 of the refrigerator 1 and cooled by the cool air 5 formed by the cooler 3 and the fan 4, and the refrigerator provided in the back surface portion 7 of the refrigerator compartment 6. An illuminating body 8, a duct 9 provided on the back surface portion 7 of the refrigerator compartment 6 around the interior illuminating body 8, introduced with the cool air 5 from the fan 4 to flow down in one direction, and the flow of the duct 9 A plurality of outlets 10 for blowing the cold air 5 from the duct 9 into the refrigerator compartment 6 along the direction, and the bottom 11 of the refrigerator compartment 6 so as to return the cool air 5 circulated through the refrigerator compartment 6 to the cooler 3 side. A suction port 12 is provided on one side. Moreover, the interior lighting body 8 includes an interior lamp 13 and a cover 14 that covers the front surface of the interior lamp 13 and diffuses light. The interior lamp 13 uses a plurality of incandescent lamps or light emitting diodes (LEDs). A plurality of shelves 15 are provided in the refrigerator compartment 6.

JP 2009-222340 A

  However, in the said conventional structure, when the interior lighting body 8 is the structure which diffuses LED light with strong directivity by the cover 14 with the interior lamp 13, when the some shelf 15 is provided in the refrigerator compartment 6, for example, The light diffuses too much and it is difficult to see food in the cabinet due to the position of the shelf 15.

  In addition, since the duct 9 in which the cool air 5 is flowed down in an inverted U shape in one direction is configured, the cool air 5 blown out from the plurality of outlets 10 on the side where the cool air 5 rises and on the side where it flows down. There was a problem that the blowing direction was different and the temperature distribution in the refrigerator compartment 6 became non-uniform.

  The present invention solves the above-described conventional problems, and facilitates recognition of a target object by arranging the interior lighting body of the refrigerator, and uniformizing the blowout of cool air in the duct provided around the interior lighting body. The purpose is to do.

  In order to solve the above-mentioned conventional problems, a refrigerator according to the present invention is provided with a heat insulating box, a refrigerator compartment duct provided on the back of a refrigerator compartment configured inside the heat insulating box, and supplying cold air from below to above. A heat insulating portion that forms an inner wall of the refrigerator compartment duct and forms a cold air passage, a plurality of shelves provided in the refrigerator compartment, an illumination means provided in the refrigerator compartment duct and disposed separately from the cold air passage, and illumination The means includes a plurality of semiconductor light emitting devices (LEDs) arranged along a plurality of shelf boards.

  As a result, light from each semiconductor light emitting element is irradiated to the storage items placed on a plurality of shelves in the refrigerating room, and the recognizing items are easily recognized and taken out, and the refrigerating room duct supplies cold air in the same direction. In addition, the temperature distribution in the refrigerator compartment is made uniform by unifying the blowing state of the cold air and making the blowing of the cold air uniform.

  The refrigerator of the present invention can easily recognize and take out the stored items by the illumination means provided in the refrigerator compartment duct.

Sectional drawing of the refrigerator in Embodiment 1 of this invention Sectional drawing of the principal part of the refrigerator in Embodiment 1 of this invention Sectional drawing of the principal part of the refrigerator in Embodiment 2 of this invention Sectional drawing of the principal part of the refrigerator in Embodiment 3 of this invention Sectional drawing of the principal part of the refrigerator in Embodiment 4 of this invention Partial sectional view of a conventional refrigerator

1st invention comprises the heat insulation box, the refrigerating room duct which is provided in the back of the refrigerating room constituted inside this heat insulating box, and supplies cold air from the bottom upwards, and constitutes the inner wall of this refrigerating room duct And a plurality of shelves provided in the refrigerating chamber, and a lighting unit provided in the refrigerating chamber duct for illuminating the refrigerating chamber, wherein the lighting unit includes the plurality of shelves. A plurality of semiconductor light emitting devices are arranged along the shelf plate of the refrigeration chamber, and the cold room duct is provided with a cold air passage in a Y-shape, and an upper cold air outlet is provided at the upper end thereof. A refrigeration room temperature control operation unit that provides illumination means between the branched portions of the U-shaped cold air passage, and adjusts the cross-sectional area of the passage by means of a mechanical damper formed of a constriction at the lower portion of the Y-shaped cold air passage The illuminating means and the refrigerated room temperature adjusting operation unit are provided with the refrigerated By integrated with the duct, the light from the semiconductor light-emitting elements is irradiated in the storage object placed on a plurality of shelves of the refrigerating compartment, the recognition and removal of stored items can be facilitated. Further, the cold room duct supplies cold air in the same direction, unifies the cold air blowing state, and makes the cold air blowing uniform, thereby making the temperature distribution in the cold room uniform. Further, by providing the illumination means, it is not necessary to provide an irregular protrusion in the refrigerator compartment, and the circulation of the cold air in the refrigerator compartment can be rectified to uniformly cool the stored items. In addition, when installing the refrigerator compartment duct in the refrigerator compartment, a refrigerated room temperature adjustment operation unit will be installed in addition to the lighting means, and the refrigeration room temperature adjustment operation unit prevents the deterioration of the sealing performance and the refrigerator compartment. The assembling property of the duct can be improved.

In the second invention, in particular, the illumination means according to the first invention is disposed in the recess of the heat insulating portion when provided in the refrigerator compartment duct so as not to come into contact with the cold air flowing into the refrigerator compartment duct. The heat of the means is not dissipated by the convection of the cold air, and an increase in power consumption can be prevented.

According to the third aspect of the invention, in particular, the freezer compartment provided in the heat insulation box of the first or second aspect of the invention has a refrigeration room temperature adjustment operation section for adjusting the freezer compartment temperature disposed below the refrigerator compartment duct. The freezer room temperature control unit is also installed as a single unit when the cold room duct is installed in the cold room, preventing the deterioration of the sealing performance and improving the assembly of the cold room duct by installing the freezer room temperature control unit. It can be carried out.

In the fourth invention, in particular, the plurality of cold air outlets provided in the side portion of the cold air duct according to any one of the first to third inventions are a plurality of shelf boards provided in a plurality of upper and lower stages in the refrigerator compartment. Since the cool air is blown out along the ceiling, the cool air expands along the ceiling of the shelf board, and the entire stored items on the lower shelf board can be completely cooled.

In the fifth aspect of the invention, in particular, the refrigeration chamber duct according to any one of the first to fourth aspects is provided with a cold air return port that is isolated from the cold air passage at the lower portion and circulates in the cold room. This prevents contact between the cold air flowing into the refrigerator and the cold air flowing into the return port, thereby preventing an increase in the temperature of the cold air flowing into the refrigerator compartment.

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

(Embodiment 1)
FIG. 1 is a front cross-sectional view showing the configuration of the refrigerator in the first embodiment of the present invention, and FIG. 2 is a side cross-sectional view of the refrigerator of the same embodiment.

  In FIG. 1 and FIG. 2, reference numeral 20 denotes a refrigerator body, in which a foam heat insulating material 23 is filled between a resin inner box 21 and a steel plate outer box 22 to constitute a heat insulating box 24. The foam heat insulating material 23 is comprised with the urethane foam heat insulating material. 25 is a heat insulation partition wall and partitions the heat insulation box 24 up and down. 26 is a refrigerator compartment, 27 is a freezer compartment. A hinge-type refrigerator compartment door 28 is configured at the front opening of the refrigerator compartment 26, and a hinge-type or drawer-type refrigerator compartment door 29 is configured at the front opening of the freezer compartment 27.

  Reference numeral 30 denotes a cooler chamber configured at the rear of the freezer compartment 27, and the freezer compartment 27 and the cooler chamber 30 are partitioned by a cooler compartment cover 31. Reference numeral 32 denotes a cooler, and a defrosting device 33 is disposed below the cooler. The defrosting device 33 includes a defrosting heater and a defrosting water tray. A blower 34 uses a DC box-type axial flow fan.

  The blower 34 is press-fitted and supported by the heat insulating material 36 in the heat insulating partition wall 25. For this reason, the blower 34 has a configuration in which the main part is accommodated in the press-fit portion 35 of the heat insulating partition wall 25. The heat insulating material 36 is made of a polystyrene-based resin (styrene foam). 37 is a resin part which comprises the exterior of the heat insulation partition wall 25, 37a is a lower board, 37b is an upper board.

  The lower plate 37 a constitutes the ceiling of the freezer compartment 27, and the upper plate 37 b constitutes the bottom of the refrigerator compartment 26. The heat insulating partition wall 25 is provided with a heat insulating partition wall opening 25a provided at the lower rear of the refrigerator compartment duct 40 and a return passage 25b below the heat insulating partition wall opening 25a.

  Reference numeral 38 denotes a decorative cover formed on the back surface of the refrigerator compartment 26, and a heat insulating portion 39 formed of a polystyrene resin (styrene foam) is formed inside the decorative cover 38. The decorative cover 38 and the heat insulating portion 39 constitute a refrigerator compartment duct 40. The heat insulating part 39 constitutes a cold air passage 42 that guides the cold air 41 discharged from the blower 34 to the upper side between the heat insulating part 39 and the inner box 21. The cold air passage 42 forms a Y-shaped passage shape on the back surface of the refrigerating chamber 26, and the cold air 41 is branched and supplied above.

  A throttle part 42a is provided below the cold air passage 42, and is configured to determine the distribution of the cold air 41 to the refrigerator compartment 26 and the freezer compartment 27. The refrigerator compartment duct 40 is provided in a shape protruding from the back surface of the refrigerator compartment 26, and the plurality of upper cold air outlets 43 above the decorative cover 38 and the plurality of cold air outlets 44 on the side are connected to the refrigerator compartment 26. The cool air 41 is blown out toward the ceiling or side of the inner wall.

  The refrigerating room duct 40 and the heat insulating partition wall 25 are connected to each other in such a manner that the heat insulating part 39 of the refrigerating room duct 40 is inserted into the opening of the press fitting part 35 in which the blower 34 is accommodated in an in-row configuration. With this attachment, the press-fit portion 35 also constitutes a part of the cold air passage 42. A sealing material (not shown) is provided at the contact portion of the in-row configuration to prevent the cool air 41 from leaking.

  45 is a plurality of shelf plates provided above and below in the refrigerator compartment 26, 46 is a refrigerator compartment case (vegetable case etc.) provided below the bottom shelf 45 of the plurality of shelf plates 45 of the refrigerator compartment 26. ). Reference numeral 47 denotes a plurality of cases provided in the freezer compartment 27.

  48 is illumination means provided in the refrigerator compartment duct 40. The illumination means 48 is disposed in the recess 49 of the heat insulating portion 39 when provided in the refrigerator compartment duct 40, and does not contact the cold air 41 flowing into the refrigerator compartment duct 40. I am doing so. This dent 49 is provided between the upper part of the branched portion of the Y-shaped cold air passage 42 and the upper blow-out opening 43, and the illumination means 48 passes through the opening 50 of the decorative cover 38 to provide the inside of the refrigerator compartment 26. Lighting is performed.

  The illuminating means 48 includes a plurality of semiconductor light emitting elements (LEDs) 51, and each semiconductor light emitting element 51 is arranged along a plurality of shelf plates 45 in the refrigerator compartment 26, and illumination between the shelves 45. Like to do. The arrangement of the plurality of shelves 45 in this case is a standard arrangement, and for example, an arrangement at the time of shipment of the refrigerator main body 20 is assumed.

  Reference numeral 52 denotes an illumination cover of the illumination means 48 made of a transparent or translucent resin material provided so as to cover the opening 50 of the decorative cover 38. By the illumination cover 52, the light of the semiconductor light emitting element 51 having high directivity is provided. A wide range of illumination between the shelves 45 is performed.

  The illumination cover 52 refracts the light of the semiconductor light emitting element 51 having strong directivity so that the degree of diffusion of the light of the semiconductor light emitting element 51 is diffused to the irradiation angle between the shelves 45. Further, the illumination cover 52 prevents the cold air 41 circulating in the refrigerator compartment 26 from entering the recess 49. The wiring of the illumination means 48 is connected through the heat insulating portion 39 of the refrigerator compartment duct 40 (not shown).

  53 is a machine room arranged at the lower rear of the refrigerator main body 20 and is provided with a compressor 54.

  55 is a gasket attached to the outer peripheral portions of the inner surfaces of the refrigerator compartment door 28 and the freezer compartment door 29, and the gasket 55 is pressed against the heat insulating box 24 for sealing.

  A projecting portion 56 projects from the inner surface of the freezer compartment door 29 of the freezer compartment 27 and is provided over the entire peripheral wall of the inner surface of the freezer compartment door 29. The protrusion 56 and the inner box 21 or the heat insulating partition wall 25 constitute a substantially horizontal space 57, and the creeping distance of the space 57 is increased so that the amount of the cold air 41 that can enter the space 57 is reduced. I have to. Similarly, a protruding portion 58 that protrudes from the inner surface of the refrigerator compartment door 28 of the refrigerator compartment 26 is provided, and a space 59 is formed by the inner box 21 or the heat insulating partition wall 25, and the creeping distance of the space 59 is increased to increase the cold air 41. The amount of intrusion into the space 59 is reduced.

  The operation | movement and effect | action are demonstrated in the refrigerator comprised as mentioned above.

  The cool air 41 generated by cooling by the cooler 32 is distributed and supplied to the refrigerator compartment 26 and the freezer compartment 27 by the blower 34. The cold room 41 is supplied with cold air 41 from the upper cold air outlet 43 and the cold air outlet 44 of the cold room duct 40 so that the inside of the cold room 26 is circulated uniformly. Part of the cool air 41 supplied by the blower 34 circulates in the freezer compartment 27 from the cooler chamber 30 through the opening portion of the cooler chamber cover 31. The discharged cold air 41 cools the refrigerator compartment 26 and the freezer compartment 27, and in the refrigerator compartment 26, the cooler 32 passes through the return passage 25 b from the heat insulating partition wall opening 25 a provided at the lower rear of the refrigerator compartment duct 40. I'm trying to return to. Further, in the freezer compartment 27, the cooler compartment cover 31 is returned to the cooler 32 from the lower opening.

  The air volume control of the cold air 41 supplied to the refrigerator compartment 26 and the freezer compartment 27 is performed by a throttle portion 42a provided at the lower part of the cold air passage 42 of the refrigerator compartment duct 40, and the throttle portion 42a passes the fan 34 from the cooler chamber 30 via the fan 34. The ratio of the cool air 41 to be supplied to the refrigerator compartment duct 40 is indicated. The throttle portion 42a is configured by a fixed opening, a manual damper, a mechanical type, or an electric type damper. The temperature adjustment of the refrigerator compartment 26 and the freezer compartment 27 with respect to this air volume is performed by turning the compressor 54 on and off or down the output based on the value of a temperature detection means (not shown). It is also possible to adjust the air volume of the cold air 41 from the upper cold air outlet 43 of the cold room duct 40 while detecting the temperature in the cold room 26 with a mechanical damper or the like.

  The illumination means 48 is provided in the recessed portion 49 of the heat insulating portion 39 so that it does not come into contact with the cold air 41 in the cold air passage 42 and does not cause heat exchange or disturbance of the flow of the cold air 41. Moreover, it arrange | positions above the branch part of the Y-shaped cold air | gas channel | path 42, and it integrates with the refrigerator compartment duct 40 using the part which does not obstruct the cold air | gas channel | path 42, and enables attachment or detachment.

  The illumination means 48 is composed of a plurality of semiconductor light emitting elements 51, each of the semiconductor light emitting elements 51 is arranged so as to improve illumination between the shelves 45, and the illumination cover 52 diffuses light, A wide range of lighting is provided.

  The heat insulating partition wall 25 that partitions the inner box 21 up and down presses and supports the blower 34 in the insertion portion provided at the rear. The blower 34 is an axial fan, and a cushioning material is wound around the outer periphery of the blower 34 so as to close a gap with the insertion portion. The blower 34 that is press-fitted and supported can remove the blower 34 upward from the heat insulating partition wall 25, thereby enabling services such as failure of the blower 34.

  Further, in the assembly process of the heat insulating box 24, the heat insulating partition wall 25 is temporarily fixed at a predetermined position of the inner box 21 with the blower 34 attached, and the foam heat insulating material 23 (foam urethane) is provided between the outer box 22 and the inner box 21. ) And leaking the foam heat insulating material 23 from the portion of the inner box 21 corresponding to the side of the heat insulating partition wall 25, the heat insulating partition wall 25 is fixed at a predetermined position. Thus, the refrigerator main body 20 shown in FIG. 1 and FIG. 2 is completed through each assembly process.

  As described above, in the present embodiment, the refrigerator compartment duct 40 and the refrigerator compartment duct 40 that is provided on the back surface of the refrigerator compartment 26 configured inside the insulator box 24 and supplies the cold air 41 upward from below. And a heat insulating portion 39 that forms an inner wall of the refrigerator compartment duct 40 and that forms a cold air passage 42, a plurality of shelf plates 45 provided in the refrigerator compartment 26, and a refrigerator compartment duct 40 that is provided inside the refrigerator compartment 26. The illumination means 48 includes a plurality of semiconductor light emitting elements 51 arranged along the plurality of shelf plates 45, and the storage means placed on the plurality of shelves 45 in the refrigerator compartment 26. The object is irradiated with light from each of the semiconductor light emitting elements 51, so that the stored object can be easily recognized and taken out.

  Further, the refrigerator compartment duct 40 supplies the cold air 41 in the same direction, unifies the blowout state of the cold air 41, and makes the blowout of the cold air 41 uniform, thereby making the temperature distribution in the refrigerator compartment 26 uniform. be able to.

  Further, in the present embodiment, the refrigerator compartment duct 40 causes the cold air 41 to flow toward the side of the inner wall of the refrigerator compartment 26 from a plurality of cold air outlets 44 provided on the side protruding from the back of the refrigerator compartment 26. Since the supply is performed, the cold air 41 moves along the inner wall of the refrigerator compartment 26 to form a flow that wraps the stored items, and the stored items can be cooled uniformly.

  Further, in the present embodiment, the refrigerator compartment duct 40 is provided with a cold air passage 42 in the shape of a Y, an upper cold air outlet 43 is provided at the upper end thereof, and the upper air outlet 44 and the Y-shaped cold air passage 42. Since the illumination means 48 is provided between the branched portions, it is not necessary to provide an irregular protruding portion in the refrigerator compartment 26 by providing the illumination means 48, and the circulation of the cold air in the refrigerator compartment 26 is rectified, The stored items can be cooled uniformly.

  In the present embodiment, the illumination means 48 is disposed in the recess 49 of the heat insulating portion 39 when it is provided in the refrigerator compartment duct 40 so as not to contact the cold air 41 flowing into the refrigerator compartment duct 40. The heat of the means 48 is not dissipated by the convection of the cold air 41, and an increase in power consumption can be prevented.

In the present embodiment, the illumination unit 48 diffuses the light by the illumination cover 52.
Even the light of the semiconductor light emitting element 51 having high directivity can be illuminated over a wide range, and the stored items can be easily identified.

  Further, in the present embodiment, the illumination means 48 can adjust the degree of light diffusion by the illumination cover 52 and can mainly illuminate between the shelves 45 with the light of the semiconductor light emitting element 51 having strong directivity. It is possible to easily distinguish the stored items by preventing the light from being excessively dispersed.

  In the present embodiment, and in this embodiment, the illumination means 48 diffuses the light by the illumination cover 52, so that even the light of the highly directional semiconductor light emitting element 51 is dispersed and an afterimage to the eyes. Can be prevented from remaining.

  In the present embodiment, since the lighting means 48 is integrated with the refrigerator compartment duct 40, the refrigerator compartment duct 40 can be easily assembled and maintained.

  Further, in the present embodiment, by forming the substantially horizontal space 59 by the protruding portion 56 protruding from the inner surface of the freezer compartment door 29 of the freezer compartment 27 and the inner box 21, the creepage distance of this space 57 can be adjusted. The amount of cool air 41 entering the space 57 can be reduced, and an increase in power consumption can be prevented.

  Moreover, in this Embodiment, by forming the substantially horizontal space 59 by the protrusion part 56 and the inner box 21 which protruded from the inner surface of the refrigerator compartment door 28 of the refrigerator compartment 26, the creeping distance of this space 59 is adjusted. The amount of cool air 41 entering the space 57 can be reduced, and an increase in power consumption can be prevented.

  Moreover, in this Embodiment, since the heat insulation partition wall 25 press-fits and supports the air blower 34 in the insertion part provided in the back, it is independent from the heat insulation partition wall 25 by removing the refrigerator compartment duct 40. By removing the blower 34 upward, services such as failure of the blower 34 can be easily made possible.

(Embodiment 2)
FIG. 3 is a cross-sectional view of a main part showing the configuration of the refrigerator in the second embodiment of the present invention.

  In FIG. 3, the refrigerator compartment duct 40 is provided with a refrigerator room temperature adjusting operation unit 60 for adjusting the temperature of the refrigerator compartment 26 at the bottom. The refrigerated room temperature adjustment operation unit 60 is composed of a throttle unit 61 provided below the Y-shaped cold air passage 42, and adjusts the cross-sectional area of the cold air passage 42 with a fixed opening, a manual damper, a mechanical type, or an electric damper. Like to do.

  The operation | movement and effect | action are demonstrated in the refrigerator comprised as mentioned above.

  The air volume to the refrigerator compartment duct 40 side of the cold air 41 supplied by the fan 34 is instructed according to the size of the passage cross-sectional area of the throttle portion 61. In the case of a manual damper, the user changes the passage cross-sectional area of the throttle portion 61 to adjust the cooling method of the refrigerator compartment 26. The temperature adjustment of the refrigerator compartment 26 and the freezer compartment 27 with respect to this air volume is performed by turning the compressor 54 on and off or down the output based on the value of a temperature detection means (not shown).

  As described above, in the present embodiment, the refrigeration room temperature adjustment operation unit 60 is also integrally attached when the refrigeration room duct 40 is attached to the refrigeration room 26. It is possible to prevent deterioration of the sealing performance due to the attachment and improve the assembling property of the refrigerator compartment duct 40.

  Further, since the temperature adjustment of the refrigerator compartment 26 is simplified by a method of adjusting the passage area of the throttle portion 61 by a manual damper, the cost can be reduced.

  It is also possible to adjust the air volume of the cold air 41 from the upper cold air outlet 43 of the cold room duct 40 while detecting the temperature in the cold room 26 with a mechanical damper or the like.

(Embodiment 3)
FIG. 4 is a cross-sectional view of a main part showing the configuration of the refrigerator in the third embodiment of the present invention.

In the freezer compartment 27 provided in the heat insulation box 24 in FIG. 4, a freezing room temperature adjusting operation unit 62 that adjusts the temperature of the freezer compartment 27 is disposed below the refrigerator compartment duct 40. The frozen room temperature adjustment operation unit 62 is
It is configured by a resistor such as a volume, and is mounted using a part of the heat insulating portion 39 that is independent of the cold air passage 42 of the cold room duct 40, and the adjustment knob 63 faces the inside of the cold room 26. For example, a part of the cool air 41 supplied by the blower 34 at a position where the cool air 41 passes in the freezer compartment 27 passes through the opening portion of the cooler chamber cover 31 from the cooler chamber 30. Since it flows into the chamber 27, it is installed in the vicinity thereof.

  The operation | movement and effect | action are demonstrated in the refrigerator comprised as mentioned above.

  The temperature of the freezer compartment 27 is adjusted by turning on or off the compressor 54 or reducing the output based on the value of the temperature detector 64. The user adjusts the adjusting knob 63 provided in the refrigerating room duct 40 to give an instruction to the freezer temperature operating unit 62 to adjust how the freezing room 27 is cooled.

  As described above, in the present embodiment, when the refrigerator compartment duct 40 is attached to the refrigerator compartment 26, the refrigeration room temperature adjustment operation unit 62 is also integrally attached. It is possible to prevent deterioration of the sealing performance due to the attachment and improve the assembling property of the refrigerator compartment duct 40.

  In addition, since the temperature of the freezer compartment 27 is adjusted by the adjusting knob 63 in the refrigerator compartment 26, the freezer compartment 27 having a low temperature is not opened to prevent the temperature of the freezer compartment 27 from rising and to reduce power consumption. it can.

(Embodiment 4)
FIG. 5: is principal part sectional drawing which shows the structure of the refrigerator in the 4th Embodiment of this invention.

  In FIG. 5, the cold room duct 40 is provided with a return port 65 for the cold air 41 that is isolated from the cold air passage 42 and circulates in the cold room 26 at the lower part. The return port 65 is provided below the bottom shelf 45 of the plurality of shelves 45 provided above and below in the refrigerator compartment 26, and is disposed behind the refrigerator compartment case 46.

  The return port 65 is integrated with the decorative cover 38 of the refrigerator compartment duct 40, and the outlet 66 side of the return port 65 is opened to the cooler chamber 30 below the heat insulating partition wall 25, and heat is exchanged by the cooler 32. The cool air 41 flows into the upstream side of the fan 34. The heat insulating portion 39 of the refrigerator compartment duct 40 constitutes the periphery of the cold air passage 42, and is not provided around the return port 65 so that the cold air 41 in the cold air passage 42 and the cold air 41 returning to the return port 65 are provided. Try to separate.

  The operation | movement and effect | action are demonstrated in the refrigerator comprised as mentioned above.

  By providing the return port 65 for the cold air 41 circulating in the refrigerator compartment 26, the cold air 41 flowing into the refrigerator compartment 26 is prevented from contacting the cold air 41 flowing into the return port 65, and flows into the refrigerator compartment 26. The temperature rise of the cool air 41 is prevented. The return port 65 is provided behind the refrigeration chamber case 46 below the refrigeration chamber duct 40, and the cold air 41 blown out from the cold air outlet 44 on the side of the refrigeration chamber duct 40 into the refrigeration chamber 26 is a short circuit. I am trying not to return.

  As described above, in the present embodiment, the refrigerator compartment duct 40 is separated from the cold air passage 42 at the lower portion, and the return port 65 for the cold air 41 circulating in the refrigerator compartment 26 is provided. Contact between the cold air 41 flowing in and the cold air 41 flowing into the return port 65 can be prevented, and an increase in the temperature of the cold air 41 flowing into the refrigerator compartment 26 can be prevented.

  Further, the return port 65 is provided below the bottom shelf 45 of the plurality of shelf plates 45 provided above and below in the refrigerator compartment 26 and is disposed behind the refrigerator compartment case 46, so that the refrigerator compartment duct is provided. The short circuit of the cold air 41 from the 40 cold air outlets 44 can be prevented, and the power consumption can be reduced.

  As described above, the refrigerator according to the present invention realizes the cold room duct configuration provided with the illumination means, uniforms the temperature distribution in the refrigerator and improves the recognition of the stored items. Not applicable to commercial refrigerators.

DESCRIPTION OF SYMBOLS 20 Refrigerator main body 21 Inner box 22 Outer box 25 Heat insulation partition wall 26 Refrigerating room 27 Freezer room 28 Refrigerating room door 29 Freezer room door 32 Cooler 34 Blower 39 Heat insulation part 40 Refrigerating room duct 42 Cold air passage 43 Upper cold air outlet 44 Cold air outlet Mouth 45 Shelf plate 48 Illumination means 49 Recessed portion 51 Semiconductor light emitting device

Claims (5)

A heat insulation box, a refrigerating room duct for supplying cold air from the bottom to the top, and an inner wall of the refrigerating room duct are provided on the back of the refrigerating room configured inside the heat insulating box, and a cold air passage is formed. And a plurality of shelf plates provided in the refrigerator compartment, and an illuminating means provided in the refrigerator compartment duct for illuminating the refrigerator compartment, wherein the illumination means is provided along the plurality of shelf boards. A plurality of semiconductor light emitting elements are arranged, and the cold room duct is provided with a cold air passage in a Y shape, and an upper cold air outlet is provided at an upper end thereof, and the upper air outlet and the Y shaped cold air passage are provided. An illuminating means is provided between the branched portions, and a refrigerated room temperature adjusting operation section for adjusting a cross-sectional area of the passage by a mechanical damper constituted by a throttle portion is provided below the Y-shaped cold air passage, And the refrigerated room temperature control unit is integrated with the refrigerated room duct. Refrigerator, characterized in that it was. The refrigerator according to claim 1, wherein the illumination means is disposed in a recess of the heat insulating portion when provided in the refrigerator compartment duct so as not to contact cold air flowing into the refrigerator compartment duct. The refrigerator according to claim 1 or 2 , wherein the freezing room provided in the heat insulating box has a freezing room temperature adjustment operation unit for adjusting a freezing room temperature disposed at a lower part of the refrigerating room duct. A plurality of cool air outlet provided on the side of the cold air duct, any one of claims 1 to 3 as blowing cold air along the ceiling of the plurality of shelves provided in the upper and lower plural stages in the refrigeration compartment 1 The refrigerator according to item. The refrigerator according to any one of claims 1 to 4 , wherein the refrigerator compartment duct is provided with a cold air return port that is isolated from the cold air passage at a lower portion and circulates in the refrigerator compartment.

Images