JP2008111640A - refrigerator - Google Patents

Abstract

[PROBLEMS] To improve the effective storage volume efficiency as a refrigerator by reducing the space occupied by the heat insulation wall, and to reduce the power consumption by improving the cooling performance by improving the storage room layout and component arrangement. Provide a refrigerator that can.
A refrigerating chamber 2 arranged at the top as a storage space inside the heat insulating box 1 and first and second freezing chambers 4 and 5 having small volumes juxtaposed below the heat insulating partition wall 7. And the first and second freezer compartments formed adjacent to each other, the third freezer compartment 6 having a larger volume than the first and second freezer compartments, and these first to third freezer compartments. The refrigeration cooler 10 for cooling only the refrigeration room is arranged at the back of the refrigeration room, and the third refrigeration cooler 10 is provided at the back of the refrigeration room. A refrigeration cooler 15 for cooling the refrigerated storage space is disposed behind the freezer compartment.
[Selection] Figure 2

Description

  The present invention relates to a refrigerator provided with a dedicated cooler so as to cool a refrigerator compartment and a frozen storage space, respectively.

  In recent years, household refrigerators have been commercialized in various layout configurations with diversified cooling storage temperatures to meet various user needs. As shown in FIG. 4, the refrigerator structure according to the above has a refrigerator room (52) that is used most frequently and has a large volume at the top, and an ice making room (54) with a relatively small storage volume at the lower part and temperature switching. The mainstream is that the room (55) is juxtaposed, and the vegetable room (59) is installed at the lower part and the freezer room (56) is installed at the bottom.

  At this time, the cooler (65) for cooling each storage chamber is single, and the fan (66) is rotated so that the cooler (65) communicates with each storage chamber (62). However, as described above, in the single cooler (65), the cooling load increases for each storage room with a large temperature difference, and the refrigeration power is increased. Since it is necessary to increase the heat insulating performance, there is a problem that power consumption increases, or the volume occupied by the heat insulating material increases and the effective storage space decreases.

  In order to improve this, recently, a refrigerator has been proposed in which two coolers are provided exclusively for storage spaces for freezing and refrigeration (see, for example, Patent Document 1).

  As shown in FIG. 5, the refrigerator disclosed in Patent Document 1 has a refrigerator room (72) at the top and an ice making room (74) and a temperature switching room (75) at the lower side, as described above. In addition, a vegetable room (79) is installed in the lower part, and a freezer room (76) is installed in the lowermost part. A refrigeration cooler (80) is placed on the back of the refrigerating room (72), and the freezer room (76 ) With a refrigeration cooler (85) placed in the back of each of the storage chambers by means of dedicated fans (81) (86) provided near the coolers (80) (85). Cooling air is circulated using the air passages (82) and (88), and the cooling of each storage chamber is controlled according to the set temperature.

The vegetable compartment (79) is not directly circulated with cold air, but heat from the ice making chamber (74) and the temperature switching chamber (75) disposed above the freezer compartment (76). The inside of the vegetable compartment (79) is kept at high humidity by ensuring the cooling capacity by transmitting the inside.
JP 2006-38330 A

  However, in the configuration described in Patent Document 1, the vegetable room (79) is disposed between the freezing room (76), the ice making room (74), and the temperature switching room (75). The set temperature of the ice making chamber (74), temperature switching chamber (75), etc. is basically the freezing temperature, so the cooling temperature difference becomes extremely large, and the upper and lower heat insulation partitions (77) (78) The heat insulation thickness corresponding to the temperature difference between the refrigeration temperature and the refrigeration temperature is required, and the volume of the heat insulating material that does not contribute to the storage space is increased. As a result, the storage volume efficiency is lowered and the material cost is increased.

  The present invention has been made in consideration of the above-mentioned circumstances, and reduces the space occupied by the heat insulating wall to improve the effective storage volume efficiency as a refrigerator, and also improves the cooling capacity by improving the storage room layout and the component arrangement. It aims at providing the refrigerator which can reduce power consumption by improving this.

  In order to solve the above-described problems, the refrigerator of the present invention includes a refrigerating room disposed at the top as the storage space inside the heat insulating box, and first and second small volumes juxtaposed below the heat insulating partition wall. A freezer compartment, a third freezer compartment larger in volume than the first and second freezer compartments provided adjacent to the first and second freezer compartments, and the first to third freezer compartments. A refrigeration cooler that cools only the refrigeration room at the back of the refrigeration room, and a third refrigeration unit. A refrigeration cooler for cooling the refrigerated storage space is arranged at the back of the chamber.

  According to the present invention, it is possible to efficiently cool a refrigerator and a freezer storage space without wasteful power consumption due to supercooling when cooling with a single cooler. Each storage room forming a refrigerated storage space such as a room and a temperature switching room is arranged adjacent to each other, and a refrigeration cooler is provided on the back of each storage room. With less effective cooling, the cooling efficiency can be kept high and the power consumption can be reduced, as well as the heat insulating power of the partition wall between each storage room and the cooler can be reduced compared to the conventional, The effective storage space can be increased accordingly.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1 which is a front view of the refrigerator and FIG. 2 which is an arrangement state of a cooler, a cold air duct and the like in the storage chamber of FIG. 1, the inside of the refrigerator main body (1) formed of a heat insulating box is stored. A refrigerating chamber (2) at the top as a space, a relatively small-volume ice making chamber (4) equipped with an automatic ice making device via a heat insulating partition wall (7) on the lower side thereof, and a temperature switching chamber of almost the same volume (5) is provided adjacent to each other in the vertical direction, and on the other side, that is, on the right side, the ice making chamber (4) and the temperature switching chamber (5) are adjacent to each other and have a larger storage capacity ( 6) is arranged.

  The vegetable compartment (9) is independent through a heat insulating partition wall (8) below the frozen storage space (3) formed by the ice making chamber (4), the temperature switching chamber (5), and the freezer compartment (6). A dedicated door is provided at the front opening of each storage chamber and is closed so as to be freely opened and closed.

  Since the refrigerator compartment (2) 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 ice making room (4), the temperature switching room (5), the freezing room (6), and the vegetable room (9) disposed in the lower part have a smaller storage capacity than the refrigerated room (2) and the installation height. From a user-friendly side, a container held on a support frame fixed to the door is slid back and forth with a rail member provided on the indoor wall surface, and is pulled out to the outside together with the door opening operation to store and take out food from the top opening of the container. A drawer door system is used.

  As shown in FIG. 2, the refrigeration chamber (2) is provided with a refrigeration cooler (10), a fan (11), and a discharge duct (12) at the back of the refrigeration chamber (2). The cooled air is introduced into the refrigerating room (2) from the discharge duct (12) through the air outlet (13) by the fan (11), the room is cooled, and the cooling port (10) is again supplied from the suction port (14) It is controlled so that only the refrigerator compartment (2) is cooled to the set temperature by circulating back.

  On the other hand, a freezing storage space (3) comprising the freezing chamber (6), the ice making chamber (4), and the temperature switching chamber (5) is provided at the back of the freezing chamber (6) disposed on the other side below the center of the main body. A refrigeration cooler (15) is provided to cool the air, and the cool air generated by the cooler is blown out from the freezer outlet (17) into the freezer compartment (6) by the fan (16). A part of the air is introduced into the ice making chamber (4) from the outlet (19) and further to the temperature switching chamber (5) from the outlet (20) by the discharge duct (18) to cool them. Next, the refrigerant is combined with the return cold air from the suction port (21) formed below the freezing chamber (6) through the freezing return duct (25) from the respective suction ports (22) and (23). Cold air circulation returning to the cooler (15) is performed, and each storage chamber of the frozen storage space (3) is cooled to a set temperature by using a cold air damper (not shown).

  The vegetable room (9) arranged at the lowermost part of the storage room space transfers heat from the low-temperature frozen storage space (3) provided in the upper part through the heat insulating partition wall (8) and the heat insulating partition wall (8). ) Is indirectly cooled by heat transfer from the freezing return duct (25). At this time, when increasing the amount of heat transfer from the frozen storage space (3) to the vegetable compartment (9), in addition to reducing the thickness of the heat insulating partition wall (8), the freezing return duct (25) You may make it cool by the slight heat transfer by the heat leakage by arrange | positioning widely inside the heat insulation partition wall (8).

  The temperature of the frozen storage space (3) is about −20 ° C., and the vegetable room (9) has an indoor air temperature of about + 5 ° C., and the temperature difference is as large as 25 ° C. The insulation wall thickness is adjusted by adjusting the thickness of the partition wall (8) and the heat insulation thickness between the freezing return duct (25) and the vegetable compartment (9), and the low temperature on the frozen storage space (3) side is adjusted to the vegetable compartment (9 ) Side to cool it indirectly, but when the degree of cooling on the frozen storage space (3) side is large, the heat transfer from the heat insulating partition wall (8) causes the vegetable compartment (9) Since the inside becomes a supercooled state with respect to a predetermined temperature, a heater or the like may be provided on the ceiling surface of the vegetable room (9) and the vegetable room may be adjusted to have an appropriate temperature by controlling energization.

  With the above configuration, the inside of the vegetable compartment (9) is not cooled by the cool air from the cooler or the cold air circulation duct, and is therefore kept in a high humidity atmosphere without being dried. It can be stored for a long time without impairing the freshness, etc., the surrounding structure can be simplified, and a large lid member that covers the upper surface of the drawer container in the conventional vegetable room (8) is unnecessary. This contributes to cost reduction and can further increase the upper surface space of the container as a storage volume effective for food storage.

  Also in the configuration of the frozen storage space (3), the temperature difference between the frozen storage space (3) that is the refrigeration temperature and the refrigeration cooler (15) that is an evaporation temperature of about −30 ° C. is small as described above. Therefore, power consumption can be reduced by improving the efficiency of the refrigeration cycle, and a dedicated refrigeration cooler that is not affected by fluctuations such as temperature rise and drying in the refrigerator compartment (2) due to frequent door opening and closing. By (15), the cooling capacity of each storage chamber in the frozen storage space (3) can be secured. And the heat insulation thickness of the evaporative cover which partitions between both storage space and a cooler can be made thin, and the reduction | decrease in thickness can contribute to the increase in an effective storage volume similarly to the above.

  Furthermore, the ice making room (4), the temperature switching room (5) and the freezing room (6) constituting the frozen storage space (3) are adjacent to each other, of which the freezing room (6) and the ice making room (4) Is basically the same refrigeration temperature zone and does not require a heat insulating partition wall between these chambers, and the switching temperature of the temperature switching chamber (5) is set to a relatively low temperature, for example, If the temperature is switched between the freezing temperature, the soft freezing temperature of about -9 ° C, the partial freezing temperature of -3 ° C, and the low temperature of about 0 ° C, the temperature difference between adjacent chambers The insulation thickness of each partition wall can be reduced and the heat insulation power can be reduced compared to the conventional case, which can greatly contribute to cost reduction and the storage capacity of the frozen storage space (3) accordingly. It can be used effectively It is kill things.

  Next, another embodiment of the present invention will be described. In the embodiment shown in FIG. 2, the refrigeration cooler (15) and the fan (16) are arranged on the back of the freezing room (6) in the freezing storage space (3), so that the ice making room (4) and the temperature are increased. The back of the switching chamber (5) may be provided with a space for disposing the discharge duct (18) and the return duct (25). Therefore, the opening area is smaller than that of the freezing chamber (6). Since the depth dimensions of the small ice making chamber (4) and the temperature switching chamber (5) can be extended to the back, there is an advantage that the storage volume of each chamber (4) (5) can be increased accordingly.

  On the other hand, in another embodiment shown in FIG. 3, as shown in FIG. 2 with the same reference numerals assigned to the same parts, a refrigeration cooler (15 ′) and a fan at the back of the refrigeration storage space (3) A refrigerator (15 ') is placed at the center of the refrigerator body (1'), that is, the back of the boundary between the freezer compartment (6) and the temperature switching chamber (5), and the freezer compartment (6). The fan (16 ') is disposed at the boundary between the ice chamber and the ice making chamber (4). With this configuration, the discharge duct from the fan (16') to the storage chambers (4), (5) and (6) is provided. (18a) (18b) (18c) The difference in length can be reduced, and the cooling air can be distributed in a balanced manner, so that the cooling capacity and defrosting of the cooler (15 ') are evenly distributed without any bias. It can be cooled and defrosted.

  In the above-described embodiment, the storage chamber constituting the frozen storage space (3) has been described as the ice making chamber (4), the temperature switching chamber (5), and the freezing chamber (6). The ice making chamber (4) and the temperature switching chamber (5) are smaller in volume than the freezing chamber (6) and cooled to the freezing temperature, and the second freezing chamber The freezer compartments are arranged adjacent to each other, and used separately according to each storage volume, adjacent to the third freezer compartment (6) arranged on the other side, that is, on the right side in FIGS. May be.

It is a front view of the refrigerator which shows one Embodiment of this invention. It is a front view which shows the arrangement | positioning state of a cooler, a duct, etc. in the storage chamber of FIG. It is a front view of the same state as FIG. 2 which shows the other Example of this invention. It is a front view which shows the arrangement | positioning state of the conventional storage chamber. It is a front view which shows the other conventional arrangement | positioning state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator body 2 Refrigerating room 3 Freezing storage space 4 Ice making room (1st freezing room)
5 Temperature switching room (second freezer room)
6 Freezer room (third freezer room)
7, 8 Thermal insulation partition wall 9 Vegetable room
10 Refrigerator
11, 16, 16 ′ fans
12 Discharge duct for refrigeration
13, 17, 19, 20 Air outlet
14, 21, 22, 23 Air inlet
15, 15 ′ Refrigeration cooler
18 Refrigeration duct
25 Refrigeration return duct

Claims (5)

  A refrigerating room arranged at the top as the storage space inside the heat insulating box, first and second freezing rooms with small volumes juxtaposed below through a heat insulating partition wall, and the first and second freezing rooms A heat-insulating partition wall below the freezing storage space formed by the first and second freezing chambers and the first to second freezing chambers. A refrigeration cooler that cools only the refrigerator compartment at the back of the refrigerator compartment, and a refrigerator that cools the frozen storage space at the back of the third refrigerator compartment. Refrigerator characterized by arranging a cooler.   The refrigeration cooler has a refrigerator compartment, the refrigeration cooler has discharge ducts for introducing cool air to the first to third freezer compartments, and a return duct for returning the cool air to the coolers. 2. The refrigerator according to claim 1, wherein the refrigerator is indirectly cooled by heat transfer from a heat insulating partition wall between the frozen storage space and a return duct to a refrigeration cooler provided in the heat insulating partition wall.   The first freezer compartment and the second freezer compartment are arranged adjacent to each other in the vertical direction, and a third freezer compartment is arranged adjacent to the side of the first and second freezer compartments to form a frozen storage space. The refrigerator according to claim 1, further comprising a refrigeration cooler disposed behind the third freezer compartment.   The first freezer compartment and the second freezer compartment are arranged adjacent to each other in the vertical direction, and a third freezer compartment is arranged adjacent to the side of the first and second freezer compartments to form a frozen storage space. 2. The refrigerator according to claim 1, wherein a refrigeration cooler is disposed over the back of the second freezing chamber and the third freezing chamber located below the first freezing chamber. .   The refrigerator according to any one of claims 1 to 4, wherein the first freezing chamber is an ice making chamber and the second freezing chamber is a temperature switching chamber.

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