JP2018109500A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator having enhanced reliability by preventing freezing of a freezer damper and preventing water intrusion into a charging section of a damper drive source.SOLUTION: A freezing cold air return port 64 of a freezer 18 is provided to communicate with a lower part of a cooling chamber 23, and a freezer damper 68 is provided in the cold air return port. A charging section of a drive motor 72 of the freezer damper is sealed with a seal member 82. Due to this configuration, even during defrosting, low-temperature cold air in lower part of the cooling chamber is brought into contact with the cold air return port of the freezer, which prevents dew formation. Thus, malfunction of the damper caused by freezing of dew condensation water can be prevented. Moreover, even if defrosting water flowing down in the cooling chamber during the defrosting flows to the outer periphery of the damper drive motor via the cold air return port, intrusion of the defrosting water into a charging section of a terminal or the like can be prevented.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a refrigerator provided with a freezer damper.

  Generally, a refrigerator generates cold air in a cooling room on the back of the refrigerator body, and circulates the cold air to a refrigerator room, a freezer room, a vegetable room, etc. by a blower to cool food in each room. There is a refrigerator that can cool the freezer compartment efficiently by providing a freezer compartment damper that controls the amount of cool air circulation to the freezer compartment in addition to the refrigerator compartment damper that adjusts the amount of cool air circulating (see, for example, Patent Document 1). .

  FIG. 33 shows the refrigerator described in Patent Document 1, wherein 101 is a refrigeration room, 102 is a freezing room, and 103 is a cooling room provided on the back of the freezing room 102. The cool air generated by the cooler 104 in the cooling chamber 103 is circulated to the refrigerating chamber 101 and the freezing chamber 102 by a cooling fan 105. A freezing chamber damper 107 is provided at the cold air outlet 106 for the cold air to the freezing chamber 102 so that the amount of cold air supplied from the cooling chamber 102 to the freezing chamber 102 can be controlled.

JP 2013-72622 A

  The refrigerator disclosed in Patent Document 1 has an advantage that the frozen food can be efficiently frozen and stored because the amount of cold air supplied to the freezer compartment 102 can be controlled.

  However, in the refrigerator, during the defrosting operation of the cooler 104, high-humidity warm air after defrosting rises the cooling chamber 103 by the draft and reaches the cold air outlet, which touches the freezer damper 107. Condensation. The condensed water droplets may freeze when the cooling operation is resumed after the defrosting operation and cause a malfunction of the damper. Therefore, in this refrigerator, in order to prevent freezing, a heater dedicated to preventing freezing must be provided in the freezer damper 107, which has a problem that the configuration is complicated and the cost is increased.

  The present invention has been made in view of these points, and it is an object of the present invention to provide a refrigerator that has improved reliability by preventing freezing of the freezer damper and preventing water from entering the charging portion of the damper drive source. Is.

  In order to achieve the above object, the present invention provides a cold air return port of the freezer compartment in communication with the lower portion of the cooling chamber, and a freezer compartment damper is provided at the cold air return port, and the freezer compartment damper is charged by the driving motor. The part is sealed with a sealing material.

  As a result, the cold air return port of the freezer compartment comes into contact with the low-temperature cold air at the bottom of the cooling chamber even when defrosting, so that condensation does not occur, and it is possible to prevent malfunction of the damper due to freezing of condensed water, Even if the defrost water flowing down in the cooling chamber by the defrost flows to the outer periphery of the damper driving motor via the cold air return port, the defrost water can be prevented from entering the charging section such as the terminal section.

  According to the above configuration, the present invention can prevent malfunction of the freezer damper and prevent intrusion of defrost water into the charging portion of the damper drive source, thereby providing a highly reliable refrigerator.

The perspective view of the refrigerator in Embodiment 1 of this invention Front view showing the inside of the refrigerator Cross section of the refrigerator Explanatory drawing explaining the cold air flow of the refrigerator Front view showing the freezer of the refrigerator Sectional drawing which shows the cooling chamber of the refrigerator Sectional view showing vegetable compartment duct and refrigerator compartment return duct of the refrigerator Sectional drawing which shows the refrigerator compartment of the refrigerator Exploded perspective view showing the refrigerator compartment of the refrigerator The perspective view which looked at the rear part of the chilled room in the refrigerator compartment of the refrigerator from the back. The perspective view which looked at the refrigerator compartment duct of the refrigerator from the back The expansion perspective view which shows the principal part back surface of the refrigerator compartment duct of the refrigerator The exploded perspective view which looked at the storage room duct of the refrigerator from the back (A) Horizontal sectional view of the refrigerator compartment duct of the refrigerator, (b) Explanatory drawing showing the outlet of the refrigerator compartment duct Perspective view when the ice making room and the second freezing room of the refrigerator are opened The perspective view which shows the saucer and freezer compartment cover of the ice-making room of the refrigerator, the 2nd freezer compartment The expanded perspective view which shows the principal part of the refrigerator freezer compartment cover The top view which shows the saucer and freezer compartment cover of the ice-making room of the refrigerator, the 2nd freezer compartment Sectional drawing which shows the saucer of the 2nd freezer compartment of the refrigerator An exploded perspective view showing a cooling chamber portion of the refrigerator The perspective view which looked at the cooling room from the cooling room side, leaving a part of the cooling room cover of the refrigerator Front view showing the relationship between the cooling room cover of the refrigerator and the vegetable room duct as seen from the freezing room side AA sectional view of FIG. The perspective view which shows the relationship between the cooling chamber cover of the refrigerator and the vegetable compartment duct as seen from the freezer compartment side The perspective view which removed the cooler of the refrigerator and looked at the cooling room from the back Front view of the refrigerator seen from the back with the refrigerator cooler removed Disassembled perspective view of cooling chamber components of the refrigerator The expanded sectional view which shows the principal part of the cooling chamber of the refrigerator The perspective view which decomposes | disassembles and shows the cooling chamber cover and freezer damper of the refrigerator The expanded perspective view which shows a part of holding structure of the freezer compartment damper by the cooling chamber cover of the refrigerator Enlarged perspective view showing the freezer damper of the refrigerator Sectional drawing which shows the freezer compartment damper of the refrigerator Sectional view showing a conventional refrigerator

  The first invention includes a refrigerator main body provided with a refrigerator compartment, a freezer compartment, and a vegetable compartment, a cooling compartment that generates cold air to be supplied to the refrigerator compartment, the freezer compartment, and the vegetable compartment, and a cold air outlet provided in the freezer compartment And a cooling air return port, the cooling chamber is provided on the back side of the freezing chamber, the cold air return port is provided in communication with a lower portion of the cooling chamber, and further, a freezing chamber damper is provided at the cold air return port, The freezer compartment damper is configured such that the charging portion of the drive motor is sealed with a sealing material.

  As a result, the cold air return port of the freezer compartment comes into contact with the low-temperature cold air at the bottom of the cooling chamber even when defrosting, so that condensation does not occur, and it is possible to prevent malfunction of the damper due to freezing of condensed water, Even if the defrost water flowing down in the cooling chamber by the defrost flows to the outer periphery of the damper driving motor via the cold air return port, the defrost water can be prevented from entering the charging section such as the terminal section.

  According to a second aspect, in the first aspect, the cooling chamber and the freezing compartment are partitioned by a cooling compartment cover and a freezing compartment cover, and the freezing compartment damper is sandwiched between the cooling compartment cover and the freezing compartment cover. And fixed configuration.

  Thereby, the freezer compartment damper can be fixed using the cooling compartment cover and the freezing compartment cover, and the configuration can be simplified.

  In a third aspect based on the second aspect, the sealing material for sealing the charging portion of the freezer compartment damper is supported by a freezer compartment cover.

  Thereby, the fixation structure of a sealing member can be simplified and the reliability of a sealing member can be improved further.

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

(Embodiment 1)
1 to 4 are diagrams for explaining the overall configuration of the refrigerator, FIGS. 5 to 7 are diagrams for explaining the cooling air supply structure from the cooling chamber and the cooling chamber to each chamber, and FIGS. 8 to 14 are the refrigerator compartment and its cooling. FIG. 15 to FIG. 19 are diagrams illustrating the cooling configuration of the second freezing room, FIGS. 20 to 24 are diagrams illustrating the vegetable room and its cooling configuration, and FIGS. 25 to 32 are diagrams of the freezing room. It is a figure explaining a cooling structure.

<1-1. Overall configuration of refrigerator>
First, the whole structure of the refrigerator 500 is demonstrated using FIGS.

  1-4, the refrigerator 500 of embodiment of this indication is provided with the refrigerator main body 1 by which the front was opened. The refrigerator main body 1 includes a metal outer box 2, a hard resin inner box 3, and a foam insulation 4 filled between the outer box 2 and the inner box 3. The refrigerator main body 1 has a plurality of storage chambers that are internally partitioned by partition plates 5 and 6. The plurality of storage rooms of the refrigerator main body 1 are configured to be openable and closable by doors 7, 8, 9, 10, and 11 that employ the same heat insulating configuration as the refrigerator main body 1. In the present embodiment, the door 7 is constituted by a rotary door, and the doors 7, 8, 9, 10, and 11 are constituted by drawer-type doors.

  The plurality of storage chambers formed in the refrigerator main body 1 are the uppermost refrigeration chamber 14 and the storage chamber 15 (hereinafter referred to as the second freezer chamber 15) that is a small-capacity freezer provided below the refrigeration chamber 14. An ice making chamber 16 provided on the side, a large-capacity first freezing chamber 18 provided below the second freezing chamber 15 and the ice making chamber 16, and a vegetable chamber 17 provided at the bottom. It consists of The refrigerator compartment 14 is provided with a plurality of shelf boards 20. In addition, a chilled chamber 22 is provided in the lower part of the refrigerator compartment 14.

  The refrigerated room 14 is a storage room for refrigerated storage, and is cooled at a low temperature that does not freeze, specifically, normally set to 1 ° C. to 5 ° C. The chilled chamber 22 provided in the refrigerator compartment 14 is set to a temperature of about 1 ° C., which is slightly lower than that of the refrigerator compartment 14, and is cooled.

  The vegetable room 17 is a storage room set to a temperature that is equal to or slightly higher than that of the refrigerated room 14, and is specifically set to 2 ° C to 7 ° C and cooled. Since the vegetable compartment 17 becomes high humidity due to moisture emitted from stored foods such as vegetables, condensation may occur if it is too cold locally. Therefore, the vegetable compartment 17 is configured to reduce the amount of cooling by setting it to a relatively high temperature and to suppress the occurrence of condensation due to local overcooling.

  The 1st freezer compartment 18 and the 2nd freezer compartment 15 are storage rooms set to a freezing temperature zone, and, specifically, are usually set to -22 ° C--18 ° C, and are cooled. In order to improve the frozen storage state, the temperature may be set to a low temperature such as −30 ° C. or −25 ° C. and cooled.

  In addition, the 2nd freezer compartment 15 may be comprised as a switching chamber which can switch cooling temperature from a freezing temperature zone to a refrigeration temperature zone.

  On the other hand, as shown in FIG. 3, a cooling chamber 23 is provided on the back surface of the first freezing chamber 18. The cooling chamber 23 is provided with a cooler 24 that generates cool air and a cooling fan 25 that supplies the cool air to each storage chamber. Further, as shown in FIG. 6, a defrosting unit 26 (hereinafter referred to as a glass tube heater 26) configured with a glass tube heater or the like is provided below the cooler 24.

  In the cooler 24, a compressor 27, a condenser (not shown), a heat radiating pipe (not shown), and a capillary tube (not shown) are connected in an annular shape to constitute a refrigeration cycle. ing. Each chamber is cooled by circulation of the refrigerant compressed by the compressor 27.

  The cooling fan 25 is provided above the cooler 24, and the refrigerator compartment 14, the first freezer compartment 18, and the vegetables are connected through a refrigerator compartment duct 28, a freezer compartment duct 29, and a vegetable compartment duct 30 connected to the downstream side of the cooler 24. Cold air is supplied to the chamber 17 and the like, and each of the storage chambers is cooled.

  Hereinafter, the structure of the cooling chamber 23, the refrigerator compartment 14, the 1st freezer compartment 18, the 2nd freezer compartment 15, and the vegetable compartment 17 is demonstrated.

<1-2. Cooling chamber and cool air supply configuration>
Next, the cooling chamber and the cold air supply configuration will be described with reference to FIGS. 3 and 5 to 7.

  As shown in FIG. 3, the cooling chamber 23 is provided behind the first freezing chamber 18. As shown in FIG. 6, the cooling chamber 23 is formed by the cooling chamber cover 31 and the inner box 3. The cooling fan 25 is mounted on the upper portion of the cooling chamber cover 31 so that the cooling fan 25 is positioned above the cooler 24. As shown in FIG. 6, a freezer compartment cover 32 is attached to the front side of the cooling chamber cover 31, and the downstream side of the cooling fan 25 is covered with the freezer compartment cover 32. Further, a freezer compartment duct 29 communicating with the downstream side of the cooling fan 25 is formed between the freezer compartment cover 32 and the cooling chamber 23.

  As shown in FIGS. 2 to 5, on the downstream side of the cooling fan 25, the refrigerator compartment duct 28 of the refrigerator compartment 14 and the vegetable compartment duct 30 of the vegetable compartment 17 are connected separately and independently at different positions. Has been. More specifically, the upper surface of the upper part on the downstream side of the cooling fan 25 has a first cold air supply port 33 provided in the partition plate 5 that partitions the refrigerator compartment 14 and the first freezer compartment 18 as shown in FIG. To the refrigerator compartment duct 28. Furthermore, as shown in FIGS. 4 and 21, a second cold air supply port 34 is provided on the side of the upper portion on the downstream side of the cooling fan 25, and the vegetable compartment duct 30 is connected thereto. That is, the refrigerator compartment duct 28 and the vegetable compartment duct 30 are separately and independently connected to the cooling compartment 23 at different positions. The cold air generated by the cooler 24 is supplied separately and independently to the first cold air supply port 33 and the second cold air supply port 34 by the cooling fan 25, and is supplied to the refrigerator compartment duct 28 and the vegetable compartment duct 30. Supplied.

  A heater cover 35 that covers the glass tube heater 26 is provided below the cooler 24 as shown in FIG. For example, the heater cover 35 has an umbrella-shaped cross section. A drain port 36 for discharging defrost water to the outside is provided on the bottom surface of the cooling chamber 23.

<1-3. Cold room and its cooling configuration>
Next, the refrigerator compartment and its cooling configuration will be described with reference to FIGS. 3 and 8 to 14.

  The refrigerator compartment 14 is disposed at the top of the refrigerator body 1. As shown in FIGS. 3 and 8, the refrigerator compartment 14 has a plurality of shelf boards 20. A refrigerator compartment duct 28 is provided behind the refrigerator compartment 14.

  As shown in FIGS. 9 and 13 and the like, the refrigerator compartment duct 28 is configured such that the refrigerator compartment side surface of a duct member 28a made of polystyrene foam is covered with a resin duct cover 28b. The refrigerator compartment duct 28 is attached to the back of the refrigerator compartment 14 so as to cover the first cold air supply port 33 of the partition plate 5 that partitions the refrigerator compartment 14 and the first freezer compartment 18, and communicates with the cooling compartment 23. Arranged to do. As shown in FIGS. 9 and 11, a cold room damper 37 is incorporated in the lower part of the passage portion 21 connected to the first cold air supply port 33 of the duct member 28a. Further, the rear side portion of the lower portion of the duct member 28a is fitted with a damper cover 28c made of foamed polystyrene, and the refrigerator compartment damper 37 is incorporated. The refrigerator compartment damper 37 includes a damper flap 37 a and a refrigerator damper driving motor 37 b, and controls the amount of cold air supplied from the refrigerator compartment 23 to the refrigerator compartment 14.

  Further, as shown in FIG. 13, a heat insulating sheet 38 made of a material having heat insulating properties and elasticity is attached to the back side of the duct member 28a, that is, the portion facing the back wall of the refrigerator compartment 14. Yes. The refrigerator compartment duct 28 is attached and fixed to the inner surface of the back wall of the refrigerator compartment 14 in a state where the passage portion 21 is airtightly covered by the heat insulating sheet 38.

  As shown in FIG. 12, the heat insulating sheet 38 is attached so that the lower part thereof overlaps the upper part of the duct cover 28b. A thick tape-like drainage member 40 is attached obliquely to the lower part of the back surface side of the heat insulating sheet 38 and above the part where the refrigerator compartment damper 37 is located. The drainage member 40 is pasted to the side surface portion of the duct member 28a. With such a configuration, in the case where condensation occurs on the back surface of the heat insulating sheet 38 and this drops, the drainage member 40 receives the condensed water and is outside the range of the refrigerator compartment damper 37, in this embodiment. The water can be drained to a refrigerator compartment return duct 58 (see FIGS. 7 and 20) provided adjacent to the refrigerator compartment duct 28.

  The refrigerator compartment duct 28 is formed so that the wall thickness of the portion of the duct member 28a where the refrigerator compartment damper 37 is installed is the thickest. Further, the refrigerator compartment duct 28 is formed such that the wall thickness of the duct member 28a becomes thinner as it goes upward from the portion where the refrigerator compartment damper 37 is installed.

  Further, as shown in FIG. 14A, extending ribs 28bb integrally formed with the duct cover 28b are provided on the left and right sides of the duct cover 28b covering the surface of the duct member 28a on the refrigerator compartment 14 side. It extends from the left and right ends of 28b to the left and right sides. The extending rib 28bb is disposed at a position and an angle at which a side discharge port 28d provided on the side surface of the duct member 28a cannot be seen from the front side. Further, as shown in FIG. 14B, an inclined surface is provided on the lower surface of the side discharge port 28d so that the cold air flows upward.

<1-4. Second freezing room and ice making room and its cooling configuration>
Next, the cooling configuration of the second freezer compartment 15 will be described with reference to FIGS.

  As shown in FIG. 1, the second freezing room 15 and the ice making room 16 are arranged in parallel with each other and are provided above the first freezing room 18. Further, as shown in FIG. 15, the second freezing chamber 15 and the ice making chamber 16 have a tray 45 and an ice tray 46 that can be drawn out by the doors 8 and 9, respectively. As shown in FIG. 16, the second freezer compartment 15 and the ice making room 16 are provided with a cold air outlet 43a for the second freezer compartment (hereinafter simply referred to as a cold air outlet 43a) and a freezer compartment cover 32. Cold air is supplied to each of the tray 45 and the ice tray 46 from the cold air outlet 43b for the ice making chamber (hereinafter referred to as the cold air outlet 43b for the ice making chamber).

  A cooling fan 25 that blows out cold air is provided on the back side of the cold air outlet 43a for the second freezer compartment and the cold air outlet 43b for the ice making compartment provided in the freezer compartment cover 32. The cooling fan 25 is disposed at a position deviated from the center of the second freezer compartment 15 toward the ice making compartment 16 as shown in FIG. With such a configuration, a large amount of cold air tends to be supplied to the ice making chamber 16 side of the second freezing chamber 15.

  Therefore, in the present embodiment, as shown in FIG. 17, the portion provided with the cold air outlet 43a for the second freezer compartment of the freezer compartment cover 32 protrudes toward the second freezer compartment 15 side, and the cold air guide portion. 44 is formed. The cold air guide portion 44 has an inclined side surface portion at an end portion opposite to the end portion on the ice making chamber 16 side. The cold air guide portion 44 is provided with a cold air outlet 43a. Furthermore, the cold air outlet 43a is also formed continuously on the inclined side surface portion of the cold air guide portion 44 provided with the cold air outlet 43a. As shown in FIGS. 16 and 17, the cold air outlet 43a is divided into a plurality of slits.

  Further, as shown in FIG. 17, the cold air outlet 43 a is provided as a cold air outlet 43 aa on the lower surface together with the front surface and the inclined side surface portion of the cold air guide portion 44.

  As shown in FIGS. 18 and 19, the tray 45 provided in the second freezer compartment 15 has a plurality of ribs 45a on the bottom surface. The tray 45 is configured such that the cold air from the cold air outlet 43a is efficiently guided to the front portion of the tray 45 by a plurality of ribs 45a. As shown in FIGS. 18 and 19, a cooling plate 47 made of a material having good thermal conductivity such as aluminum may be installed on the front portion of the upper surface of the rib 45 a.

<1-5. Vegetable room and its cooling configuration>
Next, the vegetable room and its cooling configuration will be described with reference to FIGS. 3, 4 and 20 to 24.

  As shown in FIG. 3, the vegetable compartment 17 is disposed at the bottom of the refrigerator main body 1 below the first freezer compartment 18. Similar to the first freezer compartment 18, a vegetable compartment container 17 a is provided in the vegetable compartment 17 so that it can be taken in and out as the door 10 is pulled out. As shown in FIGS. 4 and 20, the vegetable compartment duct 30 that supplies cold air to the vegetable compartment 17 is disposed so as to overlap the front surface of the refrigeration compartment return duct 58 beside the cooling compartment 23 in the front-rear direction. The upper part of the vegetable compartment duct 30 is connected to a second cold air supply port 34 provided in the cooling compartment 23 as shown in FIGS. 4 and 21.

  As described above, the second cold air supply port 34 is formed separately and independently from the first cold air supply port 33 serving as the cold air supply port to the refrigerator compartment 14. That is, the second cold air supply port 34 is located below the partition plate 5 that partitions the refrigerating chamber 14 and the first freezing chamber 18 located above the cooling chamber 23, more specifically, as shown in FIG. It is provided in the rear projection area of one freezer compartment 18 and at a height position substantially the same as that of the cooling fan 25 and at a downstream side portion of the cooling fan 25. The lower end of the vegetable compartment duct 30 connected to the second cold air supply port 34 is open at the top of the vegetable compartment 17. With such a configuration, cold air is supplied from the vegetable compartment duct 30 to the vegetable compartment 17.

  As shown in FIG. 21, the vegetable compartment duct 30 has an opening 74 on the side of its upper end. The vegetable compartment duct 30 is connected to the second cold air supply port 34 so that the opening 74 faces the second cold air supply port 34. A vegetable compartment damper 75 is incorporated in the vicinity of this connecting portion, specifically, in a range substantially the same height as the cooling fan 25 (range from the upper end to the lower end of the cooling fan 25). Since the cooling fan 25 is disposed above the cooler 24, the vegetable compartment damper 75 is also located above the cooler 24.

  Further, as shown in FIG. 20, the vegetable compartment damper 75 is fitted into a concave passage groove 58 b formed on the front surface of the refrigerator compartment return duct 58 and serving as a passage portion of the vegetable compartment duct 30. When the vegetable compartment duct 30 is fitted and attached to the front surface of the passage groove 58b in a state where the vegetable compartment damper 75 is fitted, the vegetable compartment damper 75 is disposed between the refrigerator compartment return duct 58 and the vegetable compartment duct 30. It is clamped and fixed by. The vegetable compartment duct 30 and the refrigeration compartment return duct 58 are formed of a material having elastic force such as styrofoam. The elastic force ensures airtightness between the two, and at the same time, the airtightness of the vegetable compartment damper 75. Is also secured.

  As shown in FIGS. 22 and 23, the vegetable compartment damper 75 includes a damper flap 75a made of a thin plate and a vegetable damper driving motor 76 for driving the damper flap 75a. The vegetable damper drive motor 76 is provided on the side portion of the passage portion 21 (see FIGS. 11 and 13). The damper flap 75a is incorporated in the front side of the channel | path part 21 so that it may open toward the 1st freezer compartment 18 side. The amount of cold air supplied from the cooling chamber 23 to the vegetable chamber 17 is controlled by opening and closing the damper flap 75a. The damper flap 75a may be provided not on the front side of the passage portion 21 but on the rear side, and may be incorporated so as to open toward the cooling chamber 23 side.

  The cool air after cooling the vegetable compartment 17 is returned to the cooling compartment 23 via a vegetable compartment return duct (not shown) provided on the ceiling surface of the vegetable compartment 17.

<1-6. Freezer room and its cooling configuration>
Next, the freezer compartment and its cooling configuration will be described with reference to FIGS. 2, 3 and 25 to 32.

  As shown in FIG. 3, the first freezer compartment 18 is disposed below the refrigerating compartment 14 and in front of the cooling compartment 23. The first freezer compartment 18 has a freezer compartment 62 inside. The freezer compartment 62 includes a lower container 62a and an upper container 62b placed above the lower container 62a. The freezer compartment 62 is provided in the first freezer compartment 18 so that it can be freely put in and taken out by the drawer 11 being opened and closed. As described above, the freezer compartment cover 32 (see FIG. 6) is disposed between the first freezer compartment 18 and the cooling compartment 23. A freezer compartment duct 29 communicating with the downstream side of the cooling fan 25 in the cooling chamber 23 is formed between the freezer compartment cover 32 and the cooling chamber cover 31.

  As shown in FIG. 25 and the like, the freezer compartment cover 32 is provided with a cold air outlet 63 across a plurality of upper and lower stages. The uppermost cold air outlet 63 supplies cold air to the ice making chamber 16 and the second freezing chamber 15, and the middle cold air outlet 63 supplies cold air to the upper container 62 b of the freezer compartment 62, and the lowermost cold air The outlet 63 is configured to supply cold air to the lower container 62a.

  In the first freezer compartment 18, as shown in FIG. 25 and the like, a freezer cold air return port 64 communicating with the lower portion of the cooling chamber 23 is provided at the lower portion of the freezer compartment cover 32. As shown in FIG. 28, the refrigerated cold air return port 64 includes a freezer compartment side frame portion 65 and a cooling compartment side mouth frame portion 66. The freezer compartment side rim portion 65 and the cooling compartment side rim portion 66 are disposed so as to incline toward the back side of the refrigerator 500, that is, toward the cooling chamber 23 as it goes upward with respect to the perpendicular. As shown in FIG. 28, a grill 67 is mounted on the freezer compartment side opening 65 of the freezing and cold air return port 64, and a freezer compartment damper 68 is provided on the cooling compartment side frame 66.

  A grill 67 provided in the freezer compartment side frame 65 rectifies the cold air flowing from the first freezer compartment 18 to the cooling compartment 23. The grill 67 has a plurality of grill pieces 69. The grill piece 69 is inclined such that the end portion on the cooling chamber 23 side is located higher than the end portion on the first freezing chamber 18 side, and the grill piece 69 located below the grill 67 is closer to the grille. The front and rear length of the piece 69 is configured to be long. With such a configuration, the grill 67 has a shape that follows the shape of the rear face of the freezer compartment 62 in the first freezer compartment 18.

  On the other hand, the freezer compartment damper 68 provided in the cooling room side opening frame part 66 controls the cold air supplied to the first freezer compartment 18 by opening and closing. As shown in FIGS. 31 and 32, the freezer compartment damper 68 includes a plurality of heat resistant resins, for example, a damper frame 70 made of polyphenylene sulfide resin (PPS resin) and a plurality of heat resistant resins. A flap 71 (three flaps 71 in the present embodiment) is provided. The freezer compartment damper 68 is pivotally supported at the end of each of the plurality of flaps 71 on the side of the cooling chamber 23 so as to open to the side of the cooling chamber 23 opposite to the first freezer compartment 18 as shown in FIG. It is configured. The freezer compartment damper 68 is configured to be driven by a freezing damper driving motor 72 fixed to one end of the damper frame 70 as shown in FIGS. 27 and 29 to 31. In FIG. 32, a solid lead line indicates a state in which the plurality of flaps 71 are closed, and a broken line lead line indicates a state in which the plurality of flaps 71 are open.

  In addition, as shown in FIG. 27, the freezer compartment damper 68 is sandwiched and fixed between the cooling chamber cover 31 that partitions the cooling chamber 23 and the second freezing chamber 15 and the freezer compartment cover 32. In the freezer compartment damper 68, the damper frame 70 is pressurized by a claw piece 73 (see FIG. 26) provided in the cooling chamber side mouth frame portion 66, and the freezer compartment along the inclination of the cooling chamber side mouth frame portion 66. The damper 68 is provided so as to be inclined so that the cooling chamber 23 side is located below the first freezing chamber 18 side.

  As shown in FIGS. 29 to 31, the freezing damper drive motor 72 of the freezer compartment damper 68 is provided with a recess 78 (see FIG. 31) above the end opposite to the end on the damper frame 70 side. It has been. The connector terminal 79 is drawn out from the recess 78, and the recess 78 is insulated and protected by two electrical insulating plates 80 as shown in FIG. Further, the concave portion 78 is covered with a protective box 81 formed by bending a piorant tape from above. Further, a sealing member 82 made of polyethylene foam is wound around the opening end side of the protective box 81 (see FIGS. 29 and 31). As shown in FIGS. 29 and 31, the seal member 82 is sandwiched and fixed by a support frame piece 83 provided in the cooling chamber side opening frame portion 66 of the freezing chamber cover 32. Thereby, the airtightness of the charging part (connector terminal 79) is ensured.

  In addition, as shown in FIG. 26, the freezer compartment damper 68 is provided from the heater portion 26a so that the freezing damper driving motor 72 does not face the heater portion 26a of the glass tube heater 26 in the longitudinal direction of the glass tube heater 26. It is arranged so as to be located at a location shifted outward. In the present embodiment, the refrigeration damper driving motor 72 is positioned on the side of the refrigeration chamber return duct 58 beside the cooling chamber 23, so that the refrigeration damper driving motor 72 is positioned outside the heater portion 26a. The plurality of flaps 71 of the freezer damper 68 are configured to be located near the center line of the cooler 24 (see FIGS. 26 and 27).

  Further, as shown in FIG. 28, the freezer compartment damper 68 is arranged so that the cool air flowing to the cooling chamber 23 along each of the plurality of flaps 71 flows to the lower end edge of the cooler 24. In the present embodiment, the freezer damper 68 has an upper portion (an upper piece portion of the damper frame 70) (see FIG. 31) located above the lower end edge of the cooler 24 and a lower portion (damper frame). 70 is provided so as to be positioned below the lower end of the cooler 24, so that the cool air flows from the lower end edge of the cooler 24 to the lower portion.

  Furthermore, the freezer compartment damper 68 is provided such that its lower part (the lower side portion of the damper frame 70) is located above the glass tube heater 26, so that the warm and cool air heated by the glass tube heater 26 during defrosting is ensured. It is set to touch.

  On the other hand, as shown in FIG. 28, the lower side 66a of the cooling chamber side opening frame portion 66 that supports the freezing chamber damper 68 has a double wall. Moreover, the lower surface of the cooling chamber side opening frame portion 66 is formed in an arc shape and has a shape protruding toward the cooling chamber 23 (a shape protruding toward the glass tube heater 26 from the bottom surface 23a of the cooling chamber 23). As described above, the cooling chamber side opening frame portion 66 is configured to prevent the radiant heat from the glass tube heater 26 from being directly irradiated to the freezing chamber damper 68. Further, the gap portion 66b of the double wall portion of the cooling chamber side frame portion 66 is opened facing the first freezer compartment 18 so that it is suppressed from being excessively heated by being cooled by the freezer compartment cold air. It is comprised so that.

  The freezer compartment damper 68 is provided only in the freezer cold air return port 64 (see FIG. 25, etc.), and a cold air discharge passage from the cooling chamber 23 to the cold air outlet 63 (the cold air discharged from the fan 25 is discharged from the cold air). No space is provided in the space from the opening 63 until it is discharged, and the cooling chamber 23 and the first freezing chamber 18 are kept in communication.

  The operation and effects of the refrigerator 500 configured as described above will be described below with a focus on the flow of cold air.

  First, the flow of cold air from the cooling chamber 23 to the refrigerator compartment 14 and the vegetable compartment 17 will be described.

  In the refrigerator 500, when the temperature of the refrigerator compartment 14 becomes higher than the set temperature, the compressor 27 and the cooling fan 25 are driven, and the cold air generated by the cooler 24 is supplied to the downstream side of the cooling fan 25.

  The cold air supplied to the downstream side of the cooling fan 25 is supplied from the first cold air supply port 33 opened on the upper upper surface on the downstream side of the cooling fan 25 to the cold room duct 28 via the cold room damper 37. In addition, the cold air is blown out to the refrigerator room 14 from the cold air outlets (not shown) opened in the left and right side surfaces of the refrigerator compartment duct 28 to cool the inside of the refrigerator compartment 14.

  Further, the cold air supplied to the downstream side of the cooling fan 25 is also supplied to the vegetable compartment duct 30 through the vegetable compartment damper 75 from the second cold air supply port 34 opened on the upper side surface on the downstream side of the cooling fan 25. Then, the vegetable compartment 17 is supplied from the lower end opening of the vegetable compartment duct 30 to cool the inside of the vegetable compartment 17.

  When the temperature of the vegetable compartment 17 set higher than the refrigerator compartment 14 reaches the preset temperature, the vegetable compartment damper 75 is closed, the supply of cold air to the vegetable compartment 17 is stopped, and the vegetable compartment 17 is kept at the preset temperature. Be drunk.

  At this time, in the refrigerator 500 of the present embodiment, the second cold air supply port 34 that supplies cold air to the vegetable compartment 17 and the first cold air supply port 33 that supplies cold air to the refrigerator compartment 14 are provided to the cooling chamber 23. These are provided separately and independently so that the cool air is independently supplied directly from the cooling chamber 23 to the refrigerator compartment duct 28 and the vegetable compartment duct 30. With such a configuration, even if the vegetable compartment damper 75 is closed, the amount of cold air supplied to the refrigerator compartment duct 28 does not change, and the same amount as when the vegetable compartment damper 75 is open is supplied.

  Therefore, the cooling of the refrigerator compartment 14 can be performed at the same level as when the cold air is supplied to the vegetable compartment 17, and the cooling is stably performed without being affected by the opening and closing of the vegetable compartment damper 75. It becomes possible.

  Further, the vegetable compartment duct 30 is directly connected to the downstream side of the cooling fan 25 of the cooling chamber 23, so that the cooling chamber 23 is within the rear projection area range of the first freezer compartment 18 positioned in front of the cooling chamber 23. Configured to be connected to. With such a configuration, the vegetable compartment duct 30 does not pass through the partition plate 5 that partitions the refrigerator compartment 14 above the cooling compartment 23 and the first freezer compartment 18, so that the duct length is increased accordingly. The length can be shortened and the passage resistance can be reduced.

  Therefore, with such a configuration, it is possible to increase the amount of cold air circulation in the entire refrigerator 500 that is circulated by the cooling fan 25 via the vegetable compartment duct 30 and the refrigerator compartment duct 28 and the like. Therefore, the cooling performance can be improved by an amount corresponding to the increase in the amount of cool air circulation.

  Here, in order to shorten the length of the vegetable compartment duct 30, the vegetable compartment damper 75 is connected to the cooling compartment within the rear projection area range of the first freezer compartment 18, so that the vegetable compartment damper 75 It is located within the rear projection area range of the freezer compartment 18, and the vegetable compartment damper built-in portion of the vegetable compartment duct 30 projects to the second freezer compartment 15 side.

  However, in the present embodiment, in the vegetable compartment damper 75, the vegetable damper driving motor 76 is provided on the side portion of the vegetable compartment duct 30, and the damper flap 75a is provided on the front portion of the vegetable compartment duct 30. Therefore, the wall thickness of the front part of the vegetable compartment damper 75 facing the second freezer compartment 15 side can be formed by a thin one that only positions the damper flap 75a made of a thin plate. Protrusion can be suppressed. As a result, the internal volume of the second freezer compartment 15 can be secured by that much, and the depth dimension of the freezer compartment 62 can be increased.

  The vegetable room damper 75 is provided at a height position that overlaps the cooling fan 25 of the cooling room 23. With such a configuration, it is possible to prevent malfunctions and ensure the reliability of the refrigerator 500 while taking advantage of the above-described cooling performance improvement effect.

  That is, since the vegetable room 17 is set to a relatively high temperature and has a high humidity, when the vegetable room damper 75 is closed and the cold air circulation is stopped, the hot and cold air with high humidity is the vegetable. There is a case where the gas flows backward from the chamber 17 into the vegetable chamber duct 30. When this hot and cold air with high humidity touches the vegetable room damper 75, moisture is condensed, and when the cooling of the vegetable room 17 is resumed, the condensed water is frozen by the cold air supplied to the vegetable room 17. May result in poor opening and closing.

  However, in the refrigerator 500 of the present embodiment, since the vegetable compartment damper 75 is provided at a height position that overlaps the cooling fan 25, the distance from the vegetable compartment 17 to the vegetable compartment damper 75 can be secured accordingly. The height of the cooler 24 can be separated upward. Therefore, when the cold air circulation is stopped, it is possible to prevent the hot and cold air having high humidity in the vegetable compartment 17 from rising in the vegetable compartment duct 30 and reaching the vegetable compartment damper 75, which is condensed.

  Therefore, with such a configuration, it is possible to prevent the vegetable room damper 75 from freezing and causing malfunction when the cold air circulation to the vegetable room 17 is resumed, and to ensure reliability.

  That is, like the refrigerator 500 of the present embodiment, the vegetable compartment duct 30 is connected to the cooling compartment 23 within the rear projection area range of the first freezing compartment 18 located in front of the cooling compartment 23, and the vegetable compartment damper. 75 is incorporated at a height position that overlaps with the cooling fan 25, thereby improving the cooling performance and suppressing malfunction of the vegetable compartment damper 75 to ensure reliability. Furthermore, the volume of the second freezer compartment 15 can be secured.

  Furthermore, in the refrigerator 500 of the present embodiment, the vegetable compartment duct 30 is disposed so as to overlap the refrigeration compartment return duct 58 from the refrigeration compartment 14 to the cooling compartment 23 in the front-rear direction. Moreover, in the refrigerator 500 of this Embodiment, the vegetable compartment duct 30 and the refrigerator compartment return duct 58 are formed with elastic materials, such as a polystyrene foam, and the vegetable compartment damper 75 is comprised by the vegetable compartment duct 30 and the refrigerator compartment return duct 58. Is pinched. With such a configuration, there is an advantage that productivity is further improved.

  More specifically, the vegetable room damper 75 is sandwiched between the vegetable room duct 30 and the refrigerated room return duct 58 (see FIG. 20). First, outside the refrigerator body 1, the vegetable room duct 30 and the refrigerated room return duct. 58 is assembled. Then, the front of the vegetable compartment damper 75 is covered with the freezer compartment cover 32 together with the cooling compartment cover 31 adjacent to the vegetable compartment duct 30, and the vegetable compartment damper 75 is assembled between the refrigeration compartment return duct 58. By simply assembling the set of the vegetable room duct 30 with the vegetable room damper 75 and the refrigeration room return duct 58 next to the cooling room 23, the vegetable room duct 30 can be incorporated into the refrigerator main body 1 and productivity is increased. Can be improved.

  Moreover, both the vegetable compartment duct 30 and the refrigeration compartment return duct 58 are made of polystyrene foam and have an elastic force. Therefore, the vegetable compartment damper 75 can be incorporated into the vegetable compartment duct 30 in the cooling compartment cover 31 in an airtight state without using a sealing member or the like due to the elastic force of the vegetable compartment duct 30 and the refrigerator compartment return duct 58. Therefore, unlike the conventional case where the vegetable compartment damper is incorporated into the partition plate, it is not necessary to separately use a sealing member for ensuring airtightness, and the configuration can be simplified and the process can be shortened. Productivity can be improved.

  In addition, since the vegetable compartment damper 75 is elastically supported by the vegetable compartment duct 30 and the refrigeration compartment return duct 58, it is possible to suppress the generation of noise due to micro vibrations that tend to occur during opening and closing operations. You can get a quieter refrigerator.

  Next, the cooling operation of the refrigerator compartment 14 will be described.

  As described above, the refrigerator compartment 14 is cooled by supplying cold air through the refrigerator compartment duct 28. At this time, a part of the cold air supplied to the refrigerator compartment duct 28 is also supplied to the chilled chamber 22 provided at the lower part of the refrigerator compartment 14 to cool the chilled chamber 22.

  Cooling of the refrigerator compartment 14 and the chilled chamber 22 is controlled by opening and closing the refrigerator compartment damper 37 that operates based on the output from the refrigerator compartment temperature sensor 59, and is maintained at the set temperature.

  At this time, in the refrigerator 500, as described above, even if the vegetable compartment damper 75 is opened and closed to control the cooling of the vegetable compartment 17, the amount of cold air supplied to the refrigerator compartment 14 does not change and is stabilized at a constant amount. . Therefore, the temperature of the chilled chamber 22 requiring high control accuracy can be controlled and maintained with high accuracy as desired. Thereby, the preservation | save quality of the foodstuff in the chilled room 22 and other each room in the refrigerator 500 can be improved.

  Further, on both the left and right sides of the duct cover 28b covering the surface of the duct member 28a on the refrigerator compartment 14 side, extending ribs 28bb are formed integrally with the duct cover 28b and extend from the left and right ends to the left and right sides. Yes. With such a configuration, the side discharge port 28d on the front side portion of the refrigerator compartment duct 28 is hardly visible directly from the front, and the design in the refrigerator compartment 14 can be enhanced.

  Further, the lower surface of the side discharge port 28d has an inclined surface so that the flow of cool air discharged from the side discharge port 28d flows upward. With such a configuration, it is possible to reduce the air path resistance due to the vortex generation of the cold air flowing out from below, and to further improve the cooling performance of the refrigerator compartment 14.

  On the other hand, the refrigerator compartment duct 28 is cooled by the cold air flowing through the passage portion 21, and condensation is generated on the back surface of the heat insulating sheet 38 covering the passage portion 21, and this condensation may hang down.

  However, in the refrigerator 500 of the present embodiment, as shown in FIG. 11, the drainage member 40 is provided above the refrigerating room damper 37 installation portion on the back surface of the heat insulating sheet 38 that covers the passage portion 21. Therefore, the dew condensation water dripping down is received by the drainage member 40, and in the present embodiment, a part other than the part where the cold room damper 37 is installed, in this embodiment, the cold room return duct 58 provided adjacent to the cold room duct 28. Drained toward (see FIG. 4).

  Therefore, it is possible to prevent the dew condensation water that hangs down on the back surface of the heat insulating sheet 38 from entering the refrigerator compartment damper 37 portion, and to prevent the damper operation from being hindered. Further, the dew condensation water is drained toward the refrigerating room return duct 58, so that it is returned from the refrigerating room return duct 58 to the cooling chamber 23 and is drained without any trouble by a defrosting operation or the like.

  In particular, the heat insulating sheet 38 is attached to the duct member 28a so as to cover the upper portion of the damper cover 28c. With such a configuration, it is possible to reliably prevent the intrusion of condensed water from the joint portion between the upper end portion of the damper cover 28c and the duct member 28a into the refrigeration chamber damper 37 installation portion.

  Furthermore, in the refrigerator 500 of the present embodiment, the drainage member 40 is pasted across the heat insulating sheet 38 and the damper cover 28c. With such a configuration, it is possible to prevent the heat insulating sheet 38 from being peeled off, and it is possible to more reliably prevent the intrusion of condensed water from the joint portion on the damper cover 28c.

  In addition, since the drainage member 40 is affixed across the heat insulating sheet 38 and the damper cover 28c, the damper cover 28c can be firmly fixed. Therefore, even when the damper cover 28c is simply fitted into the passage portion 21 below the duct member 28a, the damper cover 28c can be securely attached and fixed to the duct member 28a. Therefore, the damper cover fixing member is not required separately, and the configuration can be rationalized and simplified.

  Moreover, since the heat insulation sheet 38 which covers the channel | path part 21 of the duct member 28a has heat insulation, the heat insulation effect | action works and it can reduce the possibility of dew condensation generation | occurrence | production and prevents the damper failure by dew condensation water more effectively. can do.

  In addition, the inside of the refrigerator compartment 14 where the refrigerator compartment damper 37 of the refrigerator compartment duct 28 is installed, that is, the front side of the refrigerator compartment duct 28 is first cooled by the low-temperature cold air supplied from the cooling compartment 23 and strongly cooled. Condensation is likely to occur. However, the refrigerator compartment duct 28 of the refrigerator 500 of the present embodiment is configured such that the wall thickness of the duct installation portion is thicker than the wall thickness of the other portions. Such a configuration can prevent the temperature from becoming extremely low. Therefore, even when the outdoor room is used in such a way that a large amount of outside air enters into the refrigerator compartment 14, for example, when the door 7 is used with the door 7 being opened for a relatively long time, the refrigerator compartment 28 is refrigerated. Condensation on the front surface of the chamber damper 37 installation portion can be suppressed. Moreover, the refrigerator compartment duct 28 of the refrigerator 500 of this Embodiment is comprised so that wall thickness of parts other than the refrigerator compartment damper 37 installation part may become thin. With such a configuration, the volume of the refrigerator compartment 14 can be increased by the amount that the wall thickness is reduced.

  As described above, according to the present embodiment, it is possible to eliminate the obstacles related to dew condensation in the refrigerator compartment 14 and to obtain a highly reliable refrigerator.

  Next, cooling of the second freezer compartment 15 will be described.

  The second freezer compartment 15 is cooled by supplying cold air from the downstream side of the cooling fan 25 through a cold air outlet 43a provided in the freezer compartment cover 32 (see FIGS. 16 and 17). The cold air that has cooled the second freezing chamber 15 returns to the cooling chamber 23 from the freezing cold air return port 64 provided at the lower portion of the first freezing chamber 18.

  Here, as shown in FIG. 16, the cold air outlet 43a is formed on the front surface of the cold air guide portion 44 protruding forward from the freezer compartment cover 32 and on the side surface portion opposite to the ice making chamber 16 side. Has been. With such a configuration, in the second freezer compartment 15, the cold air from the cooling fan 25 is not only the cold air blown from the cold air outlet 43 a that opens to the front surface of the cold air guide portion 44, but also the ice making of the cold air guide portion 44. Cold air blown out from the cold air outlet 43a that opens to the side opposite to the chamber 16 side is also supplied.

  Therefore, even if the cooling fan 25 is biased to the ice making chamber 16 side from the center of the second freezing chamber 15, the cold air from the cooling fan 25 remains on the ice making chamber 16 side of the tray 45 in the second freezing chamber 15. The other side is also fully supplied. Therefore, with such a configuration, cold air can be evenly distributed in the tray 45 in the second freezer compartment 15, and uneven cooling of the second freezer compartment 15 can be eliminated.

  In particular, in the refrigerator 500 of the present embodiment, the cold air outlet 43a is divided into a plurality of pieces. With such a configuration, the cold air can be dispersed and supplied to the second freezer compartment 15, and the cooling unevenness of the second freezer compartment 15 can be more reliably eliminated.

  Further, the cold air guide portion 44 is provided with a cold air outlet 43aa on the lower surface as well as the front surface and the side surface opposite to the ice making chamber 16 side. With such a configuration, it is possible to supply cold air also to the vicinity of the back wall portion of the second freezer compartment 15. Therefore, dew condensation that tends to occur on the back wall of the second freezer compartment 15 can be prevented.

  Moreover, as shown in FIG. 18, the tray 45 provided in the second freezer compartment 15 is provided with a plurality of ribs 45a on the bottom surface. With such a configuration, the cold air from the cold air outlet 43a is guided by the rib 45a and efficiently dispersed in the tray 45. The cooling plate 47 placed on the rib 45a is formed of a material having good thermal conductivity. With such a configuration, the food placed on the cooling plate 47 can be efficiently and uniformly cooled.

  In particular, the rib 45a is provided in the front-rear direction of the tray 45, and the cooling plate 47 is placed on the rib 45a in the front portion. With such a configuration, the cold air blown into the second freezer compartment 15 can be efficiently distributed and fed forward by the front and rear ribs 45a, and the food placed on the cooling plate 47 is It will be located in the front side of the two freezer compartments 15, it will become easy to take out, and usability can be improved.

  Finally, cooling of the first freezer compartment 18 will be described.

  As shown in FIG. 25, the first freezer compartment 18 is cooled by cold air supplied from a cold air outlet 63 provided in the freezer compartment cover 32. The cold air that has cooled the first freezing chamber 18 returns to the cooling chamber 23 from the freezing cold air return port 64 provided in the lower portion of the first freezing chamber 18 together with the cold air that has cooled the ice making chamber 16 and the second freezing chamber 15.

  Here, in the refrigerator 500 of the present embodiment, a freezer compartment damper 68 is provided at the freezer cold air return port 64 of the first freezer compartment 18. With such a configuration, the amount of cold air supplied to the first freezer compartment 18 can be controlled. That is, when the temperature of the refrigerator compartment 14 is high and the compressor 27 and the cooling fan 25 are driven even though the first freezer compartment 18 is at the set temperature, cold air is supplied to the first freezer compartment 18. Can be prevented from being excessively cooled, and good frozen storage can be realized.

  In the refrigerator 500 of the present embodiment, in particular, as shown in FIG. 25, the freezer compartment damper 68 is not the cold air outlet 63 side of the first freezer compartment 18 but the freezer cold air return port 64 at the lower part of the first freezer compartment 18. On the side. Therefore, a stable damper operation can be obtained while simplifying the configuration. Therefore, the temperature control accuracy of the first freezer compartment 18 can be improved and the reliability can be enhanced.

  That is, the first freezer compartment 18 is provided on the front surface of the cooling chamber 23 adjacent to the cooling chamber 23 in the front-rear direction. A cold air outlet 63 provided in the freezer compartment cover 32 covering the front surface of the cooling chamber 23 communicates with the downstream side of the cooling fan 25 in the cooling chamber 23. With such a configuration, during the defrosting operation of the cooler 24, the high-humidity warm air after defrosting moves up the cooling chamber 23 by the draft and reaches the cold air outlet 63. Therefore, if the freezer compartment damper 68 is provided on the cold air outlet 63 side, the hot and cold air of high temperature and high humidity is condensed by touching the freezer compartment damper 68, and is frozen when the cooling operation is resumed after the defrosting operation is completed. There is a risk of malfunction. For this reason, in order to prevent this icing, the freezer compartment damper 68 must be provided with a heater dedicated to preventing icing, which complicates the configuration.

  However, as in the refrigerator 500 of the present embodiment, if the freezer damper 68 is provided in the freezing cold air return port 64 at the lower part of the cooling chamber 23, the high-humidity warm air generated during defrosting is large. The portion is generated above the refrigerated cold air return port 64 by the draft, and rises as it is. Therefore, the amount of warm and cool air that touches the freezer compartment damper 68 is very small and the humidity is low, and icing caused by the condensation of warm and cool air is light. Moreover, this icing can be prevented by residual heat from the glass tube heater 26 for defrosting. Therefore, the operation of the freezer damper 68 can be stabilized. And since the glass tube heater 26 for defrosting is utilized, the heater for exclusive use of a defrost etc. is not required but a structure can also be simplified. That is, it is possible to improve the temperature control accuracy and at the same time improve the reliability.

  Furthermore, there is a concern that the freezer damper 68 may intrude into the connector terminal 79 of the terminal extraction portion of the freezer damper driving motor 72 that drives the freezer damper 68 due to a part of the defrosted water generated during the defrosting dripping down. Is done. However, in the refrigerator 500 according to the present embodiment, the terminal extraction portion of the refrigeration damper driving motor 72 is insulated and protected by two electrical insulating plates 80 as shown in FIG. 81. Furthermore, the opening end side of the protective box 81 is fitted with a seal member 82, and the seal member 82 is pressed down by a support frame piece 83 (see FIG. 30) provided in the cooling chamber side frame portion 66. ing. Therefore, as described above, even if the defrost water falls down, it can be prevented that the defrost water enters the charging portion (connector terminal 79). Therefore, even if the freezer compartment damper 68 is provided in the freezing cold air return port 64, it can be used safely without any problem, and a highly reliable cold air control configuration can be obtained.

  Moreover, the freezer compartment damper 68 is sandwiched and fixed between the cooling compartment cover 31 that partitions the cooling compartment 23 and the first freezing compartment 18 and the freezing compartment cover 32. With such a configuration, the seal member 82 provided on the freezing damper driving motor 72 of the freezing chamber damper 68 can be fixed using the cooling chamber cover 31 and the freezing chamber cover 32, and the configuration is simplified. Can be achieved.

  In addition, since the seal member 82 that seals the charging portion (connector terminal 79) of the freezer compartment damper 68 is fixed by the freezer compartment cover 32, the fixing configuration of the seal member 82 can be simplified, and the configuration is further simplified. Can be achieved.

  Further, the freezer damper 68 is configured by a combination of a plurality of flaps 71. With such a configuration, the front-rear width dimension when each of the plurality of flaps 71 is opened can be significantly reduced as compared with the case where the damper is configured with a single flap. Therefore, the freezer compartment damper 68 itself can be made compact, and at the same time, the space for installing the freezer compartment damper 68 can be greatly reduced, and the volume in the first freezer compartment 18 can be increased accordingly.

  In addition, each of the plurality of flaps 71 of the freezer compartment damper 68 is provided so as to open toward the cooling chamber 23 side. Also with such a configuration, the volume in the first freezer compartment 18 can be increased. That is, when each of the plurality of flaps 71 is provided so as to open toward the first freezer compartment 18 side, each of the plurality of flaps 71 protrudes toward the first freezer compartment 18 side, and accordingly, the freezer compartment container. 62 will have to be positioned forward. Therefore, the volume of the freezer compartment 62, that is, the volume of the first freezer compartment 18 must be reduced. However, such a problem can be solved by adopting a configuration like the refrigerator 500 of the present embodiment, and the volume of the first freezer compartment 18 can be increased.

  Further, as shown in FIG. 28, the cooling chamber side opening frame portion 66 of the refrigeration cold air return port 64 to which the freezing chamber damper 68 is mounted is positioned so as to be located rearward from the vertical line, that is, the cooling chamber. It is inclined so as to be located on the 23 side. In addition, the cooling chamber 23 side of the freezing chamber damper 68 attached to the cooling chamber side opening frame portion 66 is inclined with respect to the first freezing chamber 18 side of the freezing chamber damper 68 so as to be positioned below. With such a configuration, even if the warm air generated in the cooling chamber 23 during the defrosting operation of the cooler 24 may come into contact with the cooling chamber side frame 66 and the dew condensation occurs, Then, it flows down to the cooling chamber 23 side and is drained from the drain port 36 to the outside. Therefore, it is possible to prevent the dew condensation water from flowing down to the first freezer compartment 18 side and icing in the first freezer compartment 18 to form an ice block and causing a failure.

  Normally, during the defrosting operation, the freezer compartment damper 68 is closed so that the warm air in the cooling chamber 23 does not enter the first freezer compartment 18.

  Moreover, since the freezer compartment damper 68 is close to the glass tube heater 26 below the cooling compartment 23, the temperature of the freezer compartment damper 68 rises during the defrosting operation. However, the damper frame 70 and the plurality of flaps 71 constituting the freezer damper 68 of the refrigerator 500 of the present embodiment are formed of a heat resistant material. With such a configuration, thermal deformation and the like can be prevented, and a good damper action can be secured over a long period of time.

  In particular, in the refrigerator 500 of the present embodiment, the freezer compartment damper 68 is provided such that its lower portion (the lower side portion of the damper frame 70) is located not above the glass tube heater 26 but above it. ing. With such a configuration, the freezer damper 68 is disposed at a position away from the glass tube heater 26, so that a direct thermal effect due to radiant heat rays can be reduced, and an increase in temperature can be suppressed. . On the other hand, the warm and cool air heated by the glass tube heater 26 is surely touching the freezer compartment damper 68, and even if the freezer compartment damper 68 is frosted, the frost is reliably defrosted. Therefore, with such a configuration, the damper operation can be improved.

  Further, the lower side 66a of the cooling chamber side frame 66 that supports the lower portion of the freezer damper 68, which is short from the glass tube heater 26, protrudes into the cooling chamber 23 (the glass tube heater 26 from the bottom surface 23a of the cooling chamber 23). Projecting to the side). With such a configuration, it is possible to prevent the radiant heat rays from the glass tube heater 26 from directly irradiating the lower side portion of the damper frame 70 of the freezer compartment damper 68, thereby preventing an extreme temperature rise. Moreover, the lower side 66a of the cooling chamber side frame portion 66 is formed as a double wall, and the gap portion 66b is configured to open facing the first freezer compartment 18. With such a configuration, a cooling action by the cold air in the first freezer compartment 18 is added, an extreme temperature rise of the freezer compartment damper 68 can be prevented, and good operation can be guaranteed.

  In addition, as shown in FIG. 26, the freezer damper 68 has a freezer damper drive motor 72 at a position where it does not face the heater portion 26a of the glass tube heater 26, in this embodiment, a refrigerator return duct next to the cooler 23. 58 and the vegetable compartment duct 30 are provided on the side where they are arranged. With such a configuration, it is possible to relieve the direct thermal effect of the radiant heat rays from the glass tube heater 26 on the refrigeration damper driving motor 72. As a result, an extreme temperature rise of the refrigeration damper driving motor 72, which is a precision part and includes a plurality of gears, can be prevented, and a stable operation of the refrigeration damper driving motor 72 can be ensured. .

  In this way, while the refrigeration damper driving motor 72 is maintained outside the heater portion 26a, the freezing compartment damper 68 is returned to the refrigeration compartment where the refrigeration damper driving motor 72 is located beside the cooling chamber 23. It is provided so as to be located on the duct 58 side. With such a configuration, the plurality of flaps 71 are positioned closer to the center line of the cooler 24, and the cool air returning to the cooling chamber 23 can be efficiently contacted with the cooler 24. Thereby, the cooler 24 can fully exhibit the original cooling performance of the cooler 24 itself, and can greatly improve the cooling performance.

  Moreover, the freezer damper 68 has an upper portion (an upper piece portion of the damper frame 70) located above the lower end edge of the cooler 24, and a lower portion (a lower side 66a portion of the damper frame 70) that is a cooler. It is provided so as to be located below the lower end of 24. With such a configuration, the cool air returning to the cooling chamber 23 can surely flow from the lower end surface of the cooler 24 to the lower part. Therefore, most of the cold air flows upward from the lower end surface of the cooler 24, enabling cooling utilizing the entire cooler 24 effectively, and further improving the cooling performance. .

  On the other hand, a grill 67 is attached to the freezing cold air return port 64 on the first freezing chamber 18 side of the freezing chamber damper 68. Each of the plurality of grill pieces 69 of the grill 67 is provided so as to be inclined so that the end portion on the cooling chamber 23 side is positioned above the end portion on the first freezing chamber 18 side. With such a configuration, when the freezer compartment 62 is pulled out, it is possible to prevent the glass tube heaters 26 and the like located behind the grill pieces 69 from being seen, and the design can be improved. The user can be prevented from feeling uncomfortable.

  In addition, the plurality of grill pieces 69 of the grill 67 are formed such that the front and rear lengths of the grill pieces 69 positioned below are longer. That is, the plurality of grill pieces 69 are configured such that the front and rear lengths of the grill pieces 69 are adjusted so as to follow the shape of the rear surface of the freezer compartment 62 in the first freezer compartment 18. With such a configuration, the flow of cool air in the first freezer compartment 18 can be made smooth, and the cooling performance can be improved.

  As mentioned above, although the refrigerator concerning this invention was demonstrated using the said embodiment, this invention is not limited to this. That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  INDUSTRIAL APPLICABILITY The present invention can prevent malfunction of the freezer damper and can prevent defrosted water from entering the charging portion of the damper drive source, thereby providing a highly reliable refrigerator. Therefore, it is effective if applied to refrigerators of various types and sizes such as home use and business use.

1 Refrigerator body 14 Refrigerated room 15 Second freezer room (storage room)
16 Ice making room 17 Vegetable room 18 First freezer room (freezer room)
23 Cooling room 29 Freezing room duct 31 Cooling room cover 32 Freezing room cover 37 Refrigeration room damper 64 Freezing cold air return port 68 Freezing room damper 70 Damper frame 71 Flap 72 Refrigeration damper driving motor (driving motor)
75 Vegetable room damper 78 Concavity 79 Connector terminal 80 Electrical insulating plate 81 Protective box 82 Seal member 83 Support frame piece

Claims (3)

A refrigerator main body provided with a refrigerator compartment, a freezer compartment, a vegetable compartment, a cooling compartment for generating cold air to be supplied to the refrigerator compartment, the freezer compartment, and the vegetable compartment, and a cold air outlet and a cold air return opening provided in the freezer compartment The cooling chamber is provided on the back side of the freezing chamber, the cold air return port is provided in communication with the lower portion of the cooling chamber, a freezing chamber damper is provided at the cold air return port, and the freezing chamber damper is driven Refrigerator where the charging part of the motor is sealed with a sealing material. The refrigerator according to claim 1, wherein the cooling chamber and the freezing chamber are partitioned by a cooling chamber cover and a freezing chamber cover, and the freezing chamber damper is sandwiched and fixed between the cooling chamber cover and the freezing chamber cover. The refrigerator according to claim 1 or 2, wherein the sealing material for sealing the charging portion of the freezer compartment damper is supported by a freezer compartment cover.

Images