JP4672506B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator having a refrigerating room that is located at the upper part of a cabinet and whose front opening is opened and closed with a rotary door.

  As shown in the longitudinal sectional view of FIG. 10, a recent refrigerator has a refrigerator room (55) that is used most frequently and has a large volume at the top, and a refrigerator space similar to the refrigerator room (55) at the bottom. There are many types that have a vegetable room (58) for storing vegetables, an ice making room (56) and a temperature switching room (not shown) at the bottom, and a freezer room (59) at the bottom. It has become.

  A refrigeration cooler (63) and a fan (65) for cooling the refrigeration space are arranged on the back of the refrigeration room (55), and at a position corresponding to the back of the vegetable room (58) below. Refrigeration cooler (64) and fan (66) for cooling refrigeration spaces such as ice making chamber (56), temperature switching chamber, freezing chamber (59), etc., are installed in the machine room at the bottom of the main unit Refrigerant from the compressor (82) is alternately flown into the refrigeration and refrigeration coolers (63) and (64) by the switching valve, and each fan is cooled to a predetermined temperature and the generated cold air is supplied to each fan (65). (66) circulated through each storage space.

  The refrigerator compartment (55) has a front door closed with a rotary door, and the vegetable compartment (58), the ice making compartment (56), the temperature switching compartment, and the freezer compartment (59) are drawer-type doors. It can be pulled forward by the container and rail.

  The refrigeration and refrigeration coolers (63) and (64) are cooled to low temperatures around -13 ° C and -30 ° C, respectively. As a result, there is a problem in that the heat insulation wall thickness between the inside and outside is increased, and the food storage capacity in the storage chamber with respect to the outer shape is reduced accordingly.

On the other hand, in order to increase the storage volume efficiency in the storage chamber, a vacuum insulating panel (70) with a predetermined thickness and high heat insulating performance is arranged in a heat insulating wall (54) usually made of foam heat insulating material such as urethane foam, The storage volume was increased by reducing the thickness of the heat insulating wall (see Patent Document 1).
JP-A-2005-69448

  However, the vacuum insulation panel (70) is very expensive as compared with the foam insulation (54) and the provision of the vacuum insulation panel (70) does not solve the above problem, and particularly requires the largest capacity. In the refrigerator compartment (55), due to the thickness dimension occupied by the cooler (63) placed at the rear of the room and the partition insulation between the cooler and the refrigerator compartment (55), the entire rear wall surface combined with the duct becomes an invalid volume, The effective volume for storing food was still greatly reduced.

  The present invention has been made in view of the above circumstances, and is compact by effectively arranging refrigeration and refrigeration coolers, cooling fans, cold air ducts and the like in consideration of the position of the cooling storage space and the heat insulating wall. An object of the present invention is to provide a refrigerator capable of increasing the volume of the storage space in the refrigerated room.

In order to solve the above-mentioned problems, a refrigerator according to the present invention includes a refrigerating room located at the upper part of the refrigerator and arranged to open and close the front opening with a rotary door, and a refrigerator and a fan for cooling the refrigerating room. It consists of a duct that is installed outside and introduces the generated cold air and blows it out into the refrigeration room, and the duct plate forming the duct is flat and forms a predetermined interval with the back of the inner box that forms the refrigeration room, and covers the entire back surface It is arranged so as to almost cover it, and the cool air flowing into the duct by the fan is blown out from the vicinity of the outer peripheral side edge of the duct plate into the refrigerating room, and blown out from the outlet provided above and below the inner part into the refrigerating room In the refrigerator, the duct is divided into a left duct and a right duct on the left and right in the width direction of the refrigerator compartment, and the left duct and the right duct blow cold air into the refrigerator compartment on the side surface near the center of the refrigerator compartment. A central blow-out portion is formed, a side edge blow-out portion is formed on the side surface near the side wall of the refrigerating chamber to blow out cold air into the refrigerating chamber, and the central blow-out portion and the side edge blow-out portion are cool air flowing in the duct. is introduced into the refrigeration compartment and the air outlet, e Bei a curved guide surface for directing the cool air blown out is formed in the air outlet near the outlet in the forward direction, the outlet of the central balloon portion, said left side duct And a portion of the duct plate that divides the front side of the left duct and the right duct is narrowed toward the guide curved surface of the central blowing section so as to narrow the width of the central blowing section. It is extended, The said blower outlet of the said center blowing part is concealed from the front, It is characterized by the above-mentioned .

  According to the present invention, by flattening the cold air duct provided on the back surface of the refrigeration room and reducing the duct thickness, the depth of the refrigeration room can be increased by that amount, and the indoor volume can be expanded. The cold air outlet can be made difficult to see from the front of the refrigerator, and the appearance quality can be improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a refrigerator, and FIG. 2 is a front view thereof. The refrigerator is composed of an outer box (2), an inner box (3), and a heat insulating material (4) filled in a space between these inner and outer boxes. The refrigerator main body (1) formed of a heat-insulated box body is used as a storage space with a refrigerator compartment (5) at the top and an automatic ice maker with a relatively small volume via a heat-insulating partition wall (10) below it. An ice making room (6) and a temperature switching room (7) are provided side by side, and a vegetable room (8) is disposed below them, and a freezing room (9) is further disposed below them. A heat insulating partition wall (10) is also provided between the vegetable compartment (8) and the freezer compartment (9), and a dedicated door is provided at the front opening of each storage compartment so as to be freely opened and closed. .

  Since the refrigerator compartment (5) has the largest storage capacity and is frequently used, the opening is closed by pivotally supporting a double door with hinges provided on both sides of the front opening. The storage rooms such as the ice making room (6) and the temperature switching room (7), the vegetable room (8), and the freezing room (9) other than the refrigerating room (5) arranged in the lower part have a smaller storage capacity than the refrigerating room. From the ease of use depending on the installation height position, the container held on the support frame fixed to the door is slid back and forth with the rail member provided on the indoor wall surface, and is pulled out of the room together with the opening operation to open the upper surface of the container The drawer door system is used to store and take out food from.

  On the back of the vegetable compartment (8) positioned downward from the center of the main body, cooling for refrigeration (hereinafter referred to as R) for cooling the refrigerator compartment (5) and the refrigerator storage space (11) of the vegetable compartment (8). A refrigerator (13) and a refrigeration cooler (14) for cooling a frozen storage space (12) such as the ice making chamber (6), temperature switching chamber (7), freezing chamber (9), etc. Are overlapped in the front-rear direction in the depth direction.

  Each storage space (11) (12) is cooled by a refrigeration cycle comprising the R and F coolers (13) (14), a compressor (19) disposed in the machine room, and the like. 5) and the freezer compartment (9) are operated by controlling the refrigeration cycle according to the temperature detected by a temperature sensor (not shown) provided in the freezer compartment (9), and are arranged in the vicinity of the R cooler (13) and F cooler (14) By rotating the R fan (15) and the F fan (16), the cold air generated in each cooler is used to store the cold storage space (11) in the cold room (5) and vegetable room (8) on the high temperature side, and the low temperature. These are supplied to a freezing storage space (12) such as a freezing room (9), an ice making room (6), and a temperature switching room (7), which are individually controlled to be cooled to a predetermined temperature.

  Each of the coolers (13) and (14) is dedicated for use in a refrigerated storage space and a refrigerated storage space, and is -13 ° C for refrigeration and -30 ° C for refrigeration. By setting the evaporation temperature as close as possible to the storage space temperature, the refrigeration cycle efficiency is kept high and power saving operation is performed.

  Specifically, it is a cross-sectional view of the cooling fans (15) and (16) corresponding to the upper ice-making chamber (6) and the back surface of the temperature switching chamber (7), and is filled with a foam insulation (4). 3 is a state, FIG. 4 is a longitudinal sectional view in the vicinity of the F cooler (14), and FIG. 5 is a longitudinal sectional view of the R cooler (13) portion. The R cooler (13) is the front vegetable compartment (8) side, the low temperature side F cooler (14) is located on the rear side, and these R and F coolers (13) (14) The front R cooler (13) is placed on the right side when viewed from the front and the rear F cooler (14 ) Are shifted left and right so as to be biased to the left.

  The R cooler (13) at the front is positioned below the rear F cooler (14), and the R fan (15) and the upper part of each of the R and F coolers (13) (14) F fan (16) is arranged, and the low-temperature cold air on the freezing side generated by the F cooler (14), ascended and sucked from the rear part of the F fan (16) is the same with the front part as the blowing side. Are introduced into the ice making chamber (6) and the temperature switching chamber (7) in front through a damper (18), respectively, and most of the other cool air is supplied to the F cooler (14) by the insulating cover (17). Air is blown out from the F blowing duct (29) formed on the front face to the lower freezing room (9), and each room is cooled to a set temperature.

  The cold air circulated through the ice making chamber (6) and the temperature switching chamber (7) is divided into an I return duct (30) and an S return duct ( 39) is passed to the F suction port (32) below the F cooler (14) and merged with the cold air circulated through the freezer compartment (9), and returns to the F cooler (14).

  Cooling of the refrigerating space side is performed by blowing cool air upward from the R fan (15) using a duct extending backward from the upper part of the R cooler (13) provided on the right side as a suction duct (40) to the fan. As shown in FIG. 6, which is a front view of the refrigerator compartment (5) from (34), in the rear duct plate (21) formed wide from the right side of the refrigerator compartment (5) over the entire rear surface. It flows in and rises in the R duct (22), from the R blowout part (23) (24) (25) formed on the upper edge, both side edges, or the central part of the outer periphery of the rear duct plate (21). It blows out into the room and cools the refrigerated room to a predetermined temperature.

  The rear duct plate (21) is formed by injection molding synthetic resin and has a substantially flat plate shape. A predetermined duct space (22) is formed between the rear duct plate (21) and the rear surface of the indoor space to substantially cover the entire rear surface of the refrigerator compartment (5). They are arranged as follows. The outer periphery of the inner box (3) is installed so as to provide a predetermined cold air blowing gap (24) (25) with the upper wall and both side walls of the rear part of the inner box (3). ) An R center blowing portion (23) having an interval of about one-third of the width and having a height dimension extending over the upper and lower ends of the plurality of indoor mounting shelves (20) is formed.

  As shown in FIG. 7 which is a cross-sectional view along the line AA in FIG. 6 and FIG. 8 which shows the main part, the R center blowing portion (23) has the rear duct plate (21) in the width direction. A concave groove (26) with a U-shaped cross section extending in the vertical direction with a center width of approximately 3 minutes is formed, and the concave portion inside the concave groove (26) is placed on the curved surface (27) toward the surface. In addition, the groove is integrally formed so that a part of the upper surface of the groove (26) outside the curved edge of the surface is covered with the same surface. With this configuration, a double-slit slit-like blowing portion (23) narrower than the width of the concave groove (26) is formed in the central portion of the rear duct plate (21).

  And as shown in FIG. 9 which is sectional drawing which follows the BB line of FIG. 6, the position between said shelf (20) is shown in each outer side wall surface of the said concave groove (26) of the said 2 stripes. For example, a cold air outlet (28) of a predetermined length is drilled up and down from a position corresponding to 50mm above the shelf surface so that the blown cold air does not directly hit the placed item on the shelf. Prevents food freezing. One cold air outlet (28) is provided on each side of the groove (26) corresponding to each shelf (20), and the opening area increases from the bottom to the top. The upper part has an opening length of about 60 mm.

  The rear duct plate (21) has an engagement hook (42) integrally formed on the inner surface on both sides of the R center blowing portion (23), and the fastener attached to the inner box (3) surface. (44) is engaged, and the lower end is held by being fitted into a duct forming portion at the lower part of the back of the refrigerator compartment.

  With the above configuration, the cold air that has flowed into the rear duct plate (21) as shown by the dotted arrows in FIG. 6 flows into the R blowing portions (24) (25) at the upper and left and right side edges of the rear duct plate (21). ) Further, the inside of the refrigerator compartment (5) is cooled by blowing out from the central outlet (28) to the blowing section (23) as indicated by the solid line arrow. At this time, the cool air in each R blowing portion is blown away between the peripheral edge of the rear duct plate (21) and the curved portion formed in the corner portion of the inner wall (3) wall surface on the rear side (24) (25 ) Or from a blowing part (23) provided to be directed forward using a curved surface (27) formed inside the two concave grooves (26) in the center as a guide, and is stored in the refrigerator compartment (5 ) The inside is cooled uniformly.

  Further, the cold air outlet (28) provided between the shelves in the R central blowing portion (23) has a larger opening toward the upper side, so that the amount of cold air from the upper side increases, and the cold room (5 ) Can be cooled more uniformly.

  In addition, the width of the slit-shaped central R blowout portion (23) is narrower than the width of the concave groove (26), and when viewed from the front, two lines extending up and down can be seen. (28) itself is concealed and not visible to the user, and the rear duct plate (21) is also curved on the back side for the slit-shaped blowing gap (24) (25) formed on the peripheral edge Therefore, it is not conspicuous, and the appearance impression in the refrigerator compartment at the position of the user's line of sight when the door is opened can be improved.

  Then, the cold air circulated in the refrigerator compartment (5) is sucked into the R suction duct (49) provided so as to incline forward from the bottom of the room to the front portion of the R blowing duct (34), and the temperature switching chamber ( The cold air introduced into the vegetable compartment (8) through the V duct (50) formed in the insulating cover (17) on the back of 7) and circulated and cooled in the vegetable compartment (8) is R from the bottom of the vegetable compartment. It is sucked into the lower part of the cooler (13) and repeats circulation thereafter.

  Next, another embodiment will be described. The rear duct plate (31) shown in FIG. 10 which is a front view of the refrigerator compartment (5) in which the same reference numerals are assigned to the same parts as in the above embodiment, and in FIG. (22) The blowout part that flows up and down of the cold air flowing into the inside is blown out into the refrigerator compartment (5) from the R blowout part (35) near the both side edges together with the R central blowout part (33) of the duct plate surface. Is.

  As indicated by the dotted arrows, the cool air that has flowed into the rear duct plate (31) is partially in the refrigerator compartment (5) as indicated by the solid arrows from the R center blowing portion (33) as in the previous embodiment. The cold air blown out from the right and left R outlets (38) is directed to the front side of the duct plate with the curved surface (37) formed outside the concave groove (36) as a guide. It blows out along the side wall of the refrigerator compartment (5) from the R blowing part (35), and circulates in the room together with the cold air from the R central blowing part (33) to cool uniformly.

  FIG. 12 and still another embodiment in which the longitudinal section of the duct portion is shown in FIG. 13 is such that the R blowing portion (43) in the rear duct plate (41) is formed in a horizontally long shape and its end portion is formed on the duct plate (41). It is arranged up and down along the outer periphery of the surface.

  The R outlet (48) is wider toward the upper side to increase the opening area so that a large amount of cold air flowing from the R fan into the R duct (22) is blown into the refrigerator compartment (5). The inner box (3) on the left and right side edges of the plate (41) is blown outward from the both side wall surfaces of the back surface and the R blowing part (45) installed with a predetermined cold air blowing gap. Yes, the room is cooled uniformly by blowing a lot of cool air from above the refrigerator compartment (5) and blowing along the left and right side walls.

  In addition, the upper edge of the duct plate (41) is bent and brought into contact with the back of the inner box (3), and the uppermost shelf (20) portion of the refrigerator compartment (5) extends from the upper cold air blowing portion (43). Even if the R outlet (48) is horizontally long, the structure of the R outlet (43) is the same as described above, and the guide formed on the upper part of the concave groove (46). Due to the curved surface (47), the cold air is blown out into the refrigerator compartment (5) so as to be directed upward in the forward direction, thereby cooling the interior to a predetermined temperature.

  According to the said structure, the cooler in the back part of a refrigerator compartment (5) is arrange | positioned by arrange | positioning R cooler (13) conventionally arrange | positioned at the back surface of a refrigerator compartment (5) with F cooler (14). The space for installation is not required, and the entire back surface of the refrigerator compartment (5) can be used as the cold air duct (22).

  In particular, in each of the above embodiments, the rear duct plates (21), (31), and (41) are formed in a flat plate shape so as to substantially cover the entire rear surface of the refrigerator compartment. It can hold the duct area, and the depth dimension is the thickness of the cooler and the heat insulation wall thickness between the cooler and the room, which required 50 mm. The rear duct plate (21) (31) (41) It is possible to obtain a predetermined air passage cross-sectional area by compressing to 15 mm that is necessary only for the installation.

  Therefore, the volume of the refrigerator compartment (5) can be remarkably increased by increasing the compressed portion of this thickness dimension as the depth dimension of the refrigerator compartment (5), and effective storage is achieved in a large refrigerator having an effective internal volume of about 400L. The volume can be increased by several tens of liters.

  Moreover, when comprising the heat insulation storage space of a refrigerator by the said structure, the heat insulation partition wall (10) with a refrigerator compartment (5) with a large capacity | capacitance and a lowermost storage room, and the freezing room (9) in the case of a present Example. The ice making chamber (6), the temperature switching chamber (7), and the vegetable chamber (8) are separated from each other by the in-situ foaming method so as to obtain rigidity as a cabinet. In this section, the R and F coolers (13) and (14), the fans (15) and (16), and the members constituting the cooler chamber including the duct are arranged as a unit as an EVA assembly and an EVA cover assembly. In addition to simplifying the cooling equipment parts originally composed of many parts groups, making the assembly work easy and accurately incorporating into the specified part, each cooler (13) (14) Piping connection to refrigeration cycle and fan (15) The electrical connection of (16) can be easily and reliably performed in a relatively large space.

  In addition, by integrating as a unit, the arrangement of each component is integrated, and a space-saving effect can be obtained. Furthermore, the unitization facilitates transportation and improves manufacturability and service work efficiency. Can do.

  In the above embodiment, the storage room has a refrigerator compartment (5) at the top, followed by an ice making room (6) and a temperature switching room (7), and a vegetable room (8) at the bottom. Although arrange | positioned like the freezer compartment (9) in the lowest part, this invention is not limited to this.

  INDUSTRIAL APPLICATION This invention can be utilized for the refrigerator which arrange | positioned cooling units, such as a cooler and a fan, in storage spaces other than a refrigerator compartment.

It is a longitudinal cross-sectional view of the refrigerator which shows one Embodiment of this invention. It is a front view of the refrigerator of FIG. It is a cross-sectional view which shows the positional relationship of the cooler and fan in FIG. It is a longitudinal cross-sectional view of the F cooler vicinity in FIG. It is a longitudinal cross-sectional view of the R cooler part in FIG. It is a front view of the refrigerator compartment part in FIG. It is a cross-sectional view which follows the AA line of FIG. It is a perspective view which shows the principal part of FIG. It is a longitudinal cross-sectional view which follows the BB line of FIG. It is a front view of the refrigerator compartment part which shows the other Example of this invention. FIG. 11 is a transverse cross-sectional view of the duct portion of FIG. It is a front view of the refrigerator compartment part which shows the further another Example of this invention. FIG. 13 is a longitudinal sectional view of a duct portion of FIG. It is a longitudinal cross-sectional view which shows the conventional refrigerator structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Heat insulation wall 5 Refrigeration room 7 Temperature switching room 8 Vegetable room 9 Freezing room 10 Heat insulation partition wall
11 Refrigerated storage space 12 Refrigerated storage space 13 R cooler
14 F cooler 15 R fan 16 F fan
17 Insulation cover 20 Mounting shelf
21, 31, 41 Rear duct plate 22 R duct
23, 33, 43 R center outlet 24 R upper edge outlet
25, 35, 45 R side edge blowout part 26, 36, 46 Concave groove
27, 37, 47 Curved 28, 38, 48 R outlet
29 F outlet duct 32 F suction port 34 R outlet duct
40 Suction duct 42 Engagement hook 44 Fastener
49 R suction duct

Claims (2)

A refrigeration room located in the upper part of the refrigerator and arranged to open and close the front opening with a rotary door, a cooler and a fan for cooling the refrigeration room are provided outside the refrigeration room, and the generated cold air is introduced to refrigerate The duct plate that blows out into the room is a flat plate, and the duct plate is flat and has a predetermined distance from the back of the inner box that forms the refrigerator compartment. In the refrigerator that blows inflowing cold air from the vicinity of the outer peripheral side edge of the duct plate into the refrigerating chamber, and blows out into the refrigerating chamber from the air outlet provided over the inner part,
The duct is divided into a left duct and a right duct on the left and right in the width direction of the refrigerator compartment,
The left duct and the right duct are formed with a central blow-out portion for blowing out cool air into the refrigerating chamber on the side surface near the center in the width direction of the refrigerating chamber, and side edges for blowing out cool air into the refrigerating chamber on the side surface near the side wall of the refrigerating chamber A balloon is formed,
The central blow-out part and the side edge blow-out part are a blow-out port that introduces cold air flowing through the left duct and the right duct into a refrigeration chamber, and the cold air blown out from the blow-out port formed in the vicinity of the blow-out port in the forward direction. With a guide curved surface to be oriented ,
The outlet of the central blowing portion opens on the side surfaces of the left duct and the right duct,
A portion of the duct plate that divides the left duct and the front of the right duct is extended so as to narrow the width of the central blowing portion toward the guide curved surface of the central blowing portion, and the central blowing portion from the front surface. A refrigerator characterized by concealing the air outlet.   A plurality of the air outlets are provided at intervals along the cold air flow direction of the left duct and the right duct;
  2. The refrigerator according to claim 1, wherein the length of the air outlet along the cold air flow direction is longer in the air outlet provided on the downstream side of the left duct and the right duct.

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