JP5436522B2 - Freezer refrigerator - Google Patents

Description

  The present invention relates to a refrigerator-freezer provided with a refrigerator for cooling a refrigerator compartment in which a refrigerator compartment is disposed above the refrigerator compartment and separately sends a cool air to the refrigerator compartment in addition to the circulating fan for cooling the inside of the refrigerator.

  Large-capacity, especially high-temperature rooms (refrigerated rooms such as refrigerated rooms and vegetable rooms) are located above low-temperature rooms (freezer rooms such as freezer rooms and ice-making rooms), and are located behind the low-temperature rooms. In a refrigerator-freezer equipped with a cooler for air cooling and circulating the cool air cooled by the cooler with a circulation fan to cool the inside of the refrigerator, cool it to the uppermost stage of the high-temperature room with a large volume and height Has become difficult with a single circulation fan, and a refrigerator has been proposed in which a high-temperature chamber cooling fan is more effectively cooled by additionally arranging a fan for cooling the high-temperature chamber (for example, Patent Document 1).

Japanese Patent No. 4667307 (page 5, Fig. 3-4)

  The air path structure of the refrigerator disclosed in Patent Document 1 is such that the cold air blown out from the circulation fan for cooling inside the cabinet provided in the vicinity of the outlet of the cooler on the back of the low temperature chamber is the cold air flowing into the low temperature chamber and the high temperature chamber The cold air flowing into the high temperature chamber is blown out into the high temperature chamber by a high temperature chamber cooling fan provided on the back surface of the high temperature chamber.

  However, in such a structure, when the high temperature chamber cooling fan is driven to rotate when the high temperature chamber is cooled, the cool air supplied to the low temperature chamber is distributed to the high temperature chamber as shown in FIG. Therefore, there is a problem in that the amount of cool air blown into the low temperature chamber decreases, and the cooling efficiency of the low temperature chamber decreases.

  The present invention has been made to solve the above problems, and all the cool air in the cooler chamber is sent to the low temperature chamber, and when the high temperature chamber is cooled, the cool air in the low temperature chamber is sent to the high temperature chamber. Thus, it is an object of the present invention to provide a refrigerator-freezer in which the cooling efficiency of the low temperature chamber does not decrease even when the high temperature chamber is cooled.

  The present invention relates to a refrigerator-freezer in which a low temperature chamber is provided below and partitioned by an insulating partition wall and a high temperature chamber is provided above, and all the cool air in the cooler room provided on the back side of the low temperature chamber is transferred to the low temperature chamber. A first blower for sending to the chamber and a second blower for sending the cold air of the low temperature chamber to a high temperature chamber duct provided on the back side of the high temperature chamber are provided.

  According to the present invention, all the cool air in the cooler chamber is sent to the low temperature chamber by the first blower, and when the high temperature chamber is cooled, the cold air in the low temperature chamber is sent to the high temperature chamber by the second blower. Even when cooling a high greenhouse, the cooling efficiency of the cold room does not decrease.

It is a schematic explanatory drawing which shows the state which removed the door of the refrigerator-freezer which concerns on Embodiment 1 of this invention. It is AA sectional drawing of FIG. 1 which abbreviate | omitted one part. It is a cold path | route figure of the refrigerator-freezer which concerns on this invention. It is explanatory drawing of the principal part of the refrigerator-freezer which concerns on Embodiment 2 of this invention. It is a cold path | route diagram of the conventional refrigerator-freezer.

[Embodiment 1]
1 is a schematic explanatory view showing a state where a door of a refrigerator-freezer according to Embodiment 1 of the present invention is removed, and FIG. 2 is a cross-sectional view taken along line AA of FIG.
In both figures, reference numeral 1 denotes a heat insulating box constituting the refrigerator main body having an open front, and is filled between an outer box 1a made of a steel plate, an inner box 1b made of a resin molded product, and between the outer box 1a and the inner box 1b. The heat insulating material 1c is made.

  Reference numeral 2 denotes a heat insulating partition wall that partitions a low temperature chamber 3 such as a freezer compartment and a high temperature chamber 4 such as a refrigerator compartment, and the low temperature chamber 3 is divided into two chambers by a low temperature chamber partition wall 5. The low temperature chamber partition wall 5 may be omitted, and the low temperature chamber 3 may be configured as one chamber. 6 is a low temperature chamber door for opening and closing the front opening of the low temperature chamber 3, and 7 is a high temperature chamber door for opening and closing the front opening of the high temperature chamber 4.

  Reference numeral 8 denotes a low temperature chamber inner heat insulation wall provided on the inner side of the low temperature chamber 3, and a cooler chamber 9 is formed between the inner box 1 b of the heat insulating box 1, and the cooler chamber 9 includes the cooler chamber 9. Is provided with a cooler 10. Reference numeral 11 denotes a blow-out duct that communicates the upper part of the low-temperature chamber 3 and the cooler chamber 9, and 12 is a return duct that communicates the lower part of the low-temperature chamber 3 and the cooler chamber 9. Reference numeral 13 denotes an internal cooling fan (hereinafter referred to as a first fan) installed in the blowout duct 11.

Reference numeral 14 denotes a high temperature chamber inner heat insulating wall provided on the inner side of the high temperature chamber 4, and a high temperature chamber duct 15 is formed between the inner box 1 b of the heat insulating box 1.
Reference numeral 16 denotes a cold air introduction duct provided in the heat insulating partition wall 2, one end of which opens into the low temperature chamber 3 to form a suction port 16a, and the other end of which opens into the high temperature chamber duct 15 to form a blowout port 16b. .

  Reference numeral 17 denotes a high temperature chamber cooling blower (hereinafter referred to as a second blower) provided on the outlet 16b side of the cold air introduction duct 16 to the high temperature chamber duct 15. In FIG. 1, 18 is provided in the low temperature chamber inner heat insulation wall 8, a low temperature chamber cold air outlet for communicating the low temperature chamber 3 and the cooler chamber 9, and 19 is provided in the high temperature chamber inner heat insulation wall 14. The high temperature chamber 4 and the high temperature chamber duct 15 communicate with each other.

Next, the cooling effect | action of the refrigerator-freezer comprised as mentioned above is demonstrated.
All the air (cold air) in the cooler chamber 9 cooled by the cooler 10 is blown out from the blowout duct 11 and the cold room cold air outlet 18 by the first blower 13 to cool the inside of the cold room 3. Then, the return duct 12 returns to the cooler chamber 9 and is cooled again by the cooler 10.

  Moreover, when cooling the inside of the high temperature chamber 4, the 2nd air blower 17 is rotationally driven. As a result, the cold air in the low temperature chamber 3 is sucked into the cold air introduction duct 16 from the suction port 16a, sent to the high temperature chamber duct 15 from the blowout port 16b, and the high temperature chamber cold air blowout provided in the high temperature chamber inner heat insulation wall 14 It blows out from the opening | mouth 19, cools the inside of the high temperature chamber 4, and returns to the cooler chamber 9 from a high temperature chamber return duct (not shown).

  Thus, in the present embodiment, as shown in FIG. 3, the coolest air cooled in the cooler chamber 9 is all sent to the low temperature chamber 3 by the first blower 13, and the low temperature chamber 3 Used for cooling. For cooling the high temperature chamber 4, the cool air in the low temperature chamber 3 sent from the cool air introduction duct 16 is used. This cool air is compared with the cool air just blown out from the first blower 13. Although the temperature is high, it is sufficient to cool the inside of the high temperature chamber 4 to the target temperature.

  Further, since the vicinity of the suction port 16a of the cold air introduction duct 16 has a low pressure, the first suction port 16a is provided at a position where the temperature of the low temperature chamber 3 is likely to be high (for example, near the low temperature chamber door 6). The cold air blown into the low temperature chamber 3 by the blower 13 can be guided to the suction port 16a of the cold air introduction duct 16, and the temperature unevenness in the low temperature chamber 3 can be improved.

  Furthermore, since all the cool air in the cooler chamber 9 has a wind path configuration that is sent to the low temperature chamber 6, the air volume of the cool air to the low temperature chamber 3 does not decrease when the high temperature chamber 4 is cooled. The temperature rise in the chamber 3 can be minimized.

[Embodiment 2]
FIG. 4 is an explanatory diagram of a main part of the refrigerator-freezer according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals.
This embodiment relates to a refrigerator-freezer having a low temperature chamber partition wall 5 as shown in FIG. 1 in the low temperature chamber 3. The cold air in the low temperature chamber 3 is guided to the high temperature chamber 4 and the cold air introduction duct 20 is connected to the low temperature chamber partition wall 5. Is provided. A suction port 20a that opens into the low temperature chamber 3 is provided at one end, and a blowout port 20b that passes through the heat insulating partition wall 2 and opens into the high temperature chamber duct 15 is provided at the other end. A second blower 17 is installed.

In the present embodiment, substantially the same effect as that of the first embodiment can be obtained. Furthermore, since most of the cold air introduction duct 20 is provided in the cold room partition wall 5, the cold room 3 and the hot room are provided. Therefore, the thickness of the heat insulating layer of the heat insulating partition wall 2 that separates 4 from 4 does not decrease.
Moreover, since the chambers on both sides of the cold room partition wall 5 of the cold room 3 are in the same temperature zone, the heat insulation structure between the two rooms may be unnecessary or very thin, and the influence of the temperature in the warehouse due to the heat insulation reduction is considered. Therefore, a sufficient area of the duct to the high temperature chamber 4 can be secured.

  Further, although not shown, depending on the temperature distribution of the low temperature chamber 3, the cold air introduction duct 16 according to the first embodiment and the cold air introduction according to the present embodiment are introduced into both the heat insulating partition wall 2 and the low temperature chamber partition wall 5. A duct 20 may be provided.

[Embodiment 3]
In this embodiment, in the refrigerator-freezer according to the first or second embodiment, an air path is provided on the upstream side of the second blower 17 of the cold air introduction ducts 16 and 20 provided in the heat insulating partition wall 2 or the low temperature chamber partition wall 5. A damper 21 (see FIG. 2) that opens and closes is provided.
According to the present embodiment, by closing the damper 21, it is possible to reliably block the flow of cold air from the low temperature chamber 3 to the high temperature chamber 4, so that the temperature adjustment of the low temperature chamber 3 can be performed more reliably. it can.

  1 heat insulation box, 1a outer box, 1b inner box, 1c heat insulating material, 2 heat insulation partition wall, 3 low greenhouse, 4 high greenhouse, 5 low greenhouse partition wall, 6 low greenhouse door, 7 high greenhouse door, 8 low greenhouse back Side heat insulation wall, 9 cooler room, 10 cooler, 11 outlet duct, 12 return duct, 13 internal cooling fan (first blower), 14 high greenhouse back side heat insulation wall, 15 high greenhouse duct, 16, 20 Inlet duct, 16a, 20a inlet, 16b, 20b outlet, 17 high greenhouse cooling blower (second blower), 18 low greenhouse cold outlet, 19 high greenhouse cold outlet, 21 damper.

Claims (7)

In the refrigerator-freezer, which is partitioned by the heat insulating partition wall and provided with a low temperature chamber below and a high temperature chamber above.
A first blower that sends all the cool air in the cooler chamber provided on the back side of the low temperature chamber to the low temperature chamber;
2. A refrigerator-freezer comprising a second blower for sending cold air of the low temperature chamber to a high temperature chamber duct provided on the back side of the high temperature chamber.   The heat insulation partition wall that partitions the low temperature chamber and the high temperature chamber is provided with a cold air introduction duct that has a suction port that opens to the low temperature chamber and communicates with the high temperature chamber duct, and the cold air introduction duct is connected to the high temperature chamber duct. The refrigerator-freezer according to claim 1, wherein the second blower is provided at the outlet.   The cold room is provided with a cold room partition wall that divides the cold room left and right, and the cold room partition wall is provided with a cold air introduction duct that has a suction port that opens to the cold room and communicates with the hot room duct. 2. The refrigerator-freezer according to claim 1, wherein the second blower is provided at an outlet of the introduction duct to the high temperature chamber duct.   The cold air introduction duct according to claim 2 and claim 3 is provided on both of the heat insulation partition wall and the low temperature chamber partition wall, and the second blower is provided at the outlet of the cold air introduction duct. Item 2. The refrigerator-freezer according to Item 1. A low temperature chamber is provided below the heat insulating partition wall, and a heat insulating box body provided with a high temperature chamber above the heat insulating partition wall,
A cooler chamber having a cooler is provided between the low temperature chamber inner heat insulating wall and the heat insulating box provided on the inner side of the low temperature chamber, and the low temperature chamber and the cooler chamber are disposed on the lower heat insulating wall. A blower duct and a return duct that communicate with each other, and a first blower is installed in the blowout duct,
A blowout opening at one end of the heat insulation partition wall or the cold room partition wall that partitions the cold room left and right, and having a suction opening that opens into the cold room at the other end, and that opens into a high temperature chamber duct provided at the back of the high temperature chamber A refrigerator-freezer characterized in that a cold air introduction duct having a mouth is provided, and a second blower is installed on the outlet side of the cold air introduction duct.   The refrigerator-freezer according to any one of claims 2 to 5, wherein a suction port of the cold air introduction duct is provided in the vicinity of a cold room door of the cold room.   The refrigerator-freezer according to any one of claims 2 to 6, wherein a damper is provided on the upstream side of the second blower of the cold air introduction duct.

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