JP3167574B2 - Freezer refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a damper heater, and more particularly to a structure for fixing the damper heater.

[0002]

2. Description of the Related Art In recent freezer refrigerators, the interior of the main body is not partitioned into a freezer compartment, a refrigerator compartment and a vegetable compartment in order from the top as in the prior art, but the refrigerator compartment and the freezer compartment are arranged in order from the top in consideration of the frequency of use. In addition, there is one in which a vegetable room is formed by partition walls. In such a refrigerator-freezer, a cooling chamber in which a cooler is provided behind the freezer compartment is formed, and a cool air duct is provided behind the refrigerator compartment to form a cold-air supply passage for the refrigerator compartment. On the other hand, the cool air from the cooling chamber is passed through a damper case arranged at the lower rear portion of the refrigerator, and then supplied to a cold-air supply passage for the refrigerator to cool the refrigerator by the supplied cool air.

[0003] Here, inside the damper case,
A damper chamber is provided which is provided with a mechanical (mechanical) damper that communicates with the cold air supply passage for the refrigerator and that opens and closes according to the temperature of the refrigerator. The damper chamber is provided with a cool air inlet through which cool air from the cooling chamber flows into the damper chamber. By changing the degree of opening and closing of the cool air inlet with the damper, the cold air passes through the damper chamber from the cooling chamber and is refrigerated. The amount of cool air supplied to the room cool air supply passage is controlled, and a refrigerator having such a configuration is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-302778.

[0004] In such a refrigerator-freezer, for example, the compressor and the fan for circulating cool air may be stopped for defrosting the cooler. The cool air in the cool air supply passage for the cool room that has been supplied to the cool room returns to the damper room without being supplied to the cool room due to the stop of the cool air circulation fan. The cold air returning into the damper chamber contains moisture in the refrigerator compartment while passing through the cold-air supply passage for the refrigerator compartment. Condensation will form on the edges.

[0005] When dew condensation occurs at the cold air inlet edge of the damper chamber, the defrosting of the cooler is completed and the cooling operation is restarted. When the baffle, which is a plate material for closing the inlet, blocks the cool air inlet for a long time, the condensation causes the baffle to freeze on the cool air inlet edge and the baffle does not move. Therefore, conventionally, in order to prevent the baffle from freezing, a frame-shaped damper heater is provided at the edge of the cold air inlet, and the cold air inlet is heated by this heater to prevent condensation and freezing of the baffle.

[0006]

By the way, in such a conventional refrigerator-freezer, a damper heater having a structure in which a heater wire is adhered to an aluminum foil which also functions as a heat radiating plate is used, and a damper heater is provided at a cool air inlet edge. The provided heater is pressed by a rib projecting from the front damper chamber forming member. The front damper chamber forming member forms a front portion of the damper case and forms, for example, a front wall surface of the damper chamber facing the cold air inlet.

However, when the heater is pressed by the ribs, the ribs are present in the communicating portion between the cold air supply passage for the refrigerator compartment and the damper chamber, and the ribs are connected to the cold air supply passage for the refrigerator compartment. There was a problem that the flow of cold air was obstructed. In order to prevent the flow of the cool air to the cool air supply passage for the refrigerator compartment even if the ribs are formed in this way, the communication portion may be widened. However, there is another problem that the size of the refrigerator is increased and the accommodation volume of the freezing and refrigerating compartment is reduced.

On the other hand, if the heater is formed to have a predetermined heating capacity, the heater may protrude from the edge of the cold air inlet into the communicating portion. In this case, the protruding portion is bent along the communication portion so that the protruding portion does not hinder the cool air flowing through the communication portion, and is bonded to a portion of the middle damper chamber forming member facing the communication portion. The middle damper chamber forming member forms a middle portion of the damper case, and when the front damper chamber forming member is attached, forms a damper chamber together with the front damper chamber forming member. Further, a cool air inlet of the damper chamber is formed in the middle damper chamber forming member.

However, even when the protruding portion of the heater is bent and bonded as described above, the bent portion is eventually peeled off due to the heat generated in the heater wire and the stress of the heater wire, or the heater wire itself is peeled from the aluminum foil. There was a problem that it got up and hindered the cool air flowing through the communication part.

Accordingly, the present invention has been made to solve such a problem, and an object of the present invention is to provide a refrigerating and refrigerating room which does not obstruct the flow of cool air and does not cause a damper heater to rise. Is what you do.

[0011]

According to a first aspect of the present invention, there is provided a refrigerator according to the present invention, comprising: a cold air passage formed in a back portion of the refrigerator for supplying cool air from the cooler to the refrigerator; A damper chamber communicating the cooling air passage with the cooling chamber; a cold air inlet provided in the damper chamber for allowing cool air from the cooling chamber to flow into the damper chamber; and an opening of the cold air inlet provided in the damper chamber. A mechanical damper for controlling the amount of cold air supplied to the cold-air passage for the refrigerator compartment at different degrees, and a frame-shaped damper for preventing dew condensation attached to the opening edge of the cold-air inlet of the damper compartment by bending one end thereof A heater and a damper holder provided with the mechanical damper in the damper chamber and having a frame forming a frame of the cold air inlet, wherein the frame of the damper holder includes the mechanical damper. In which a plurality of heaters pressing piece for pressing the heater is protruded in contact with the folded portion of the damper heater when fitted with over.

A refrigerator according to a second aspect of the present invention is a refrigerator having a cold air passage formed at the back of the refrigerator to supply cold air from the cooler to the refrigerator, a cold air passage for the refrigerator, and the cooling air passage. A damper chamber communicating with the chamber, a damper chamber forming member having two heat insulating structures attached to a lower rear portion of the refrigerator compartment and forming the damper chamber inside when mounted, and a damper chamber forming member having the two damper chambers. A cold air inlet formed on one side to allow cool air from the cooling chamber to flow into the damper chamber; and an amount of cold air provided to the damper chamber and supplied to the cold air passage for the refrigerator compartment by changing a degree of opening of the cold air inlet. A damper heater for preventing dew condensation which is attached by bending one end to an opening edge of a cold air inlet of the damper chamber, and a mechanical damper for controlling the mechanical damper. And a damper holder provided with a frame that forms a frame portion of the cold air inlet, the upper portion of the frame of the damper holder being attached to a bent portion of the damper heater when the mechanical damper is mounted. A plurality of heater pressing pieces for abutting and pressing the heater are protrudingly provided, and on both sides of the frame, holder fixing pieces which are sandwiched by the two damper chamber forming members and fix the damper holder are protrudingly provided. Is what it is.

[0013]

According to the first aspect of the present invention, a cold air passage for the refrigerator compartment is formed at the back of the refrigerator compartment formed inside the main body of the heat insulating structure, and the rear of the freezer compartment formed by a partition wall below the refrigerator compartment. The cooling chambers where the coolers are arranged are formed respectively,
The cold room passage for the cold room and the cold room are communicated by the damper room to supply cold air from the cold room to the cold room. In addition, while providing a cold air inlet through which the cool air flows from the cooling chamber into the damper chamber, the degree of opening of the cold air inlet is changed by a mechanical damper disposed in the damper chamber to supply the cold air supplied to the cold air passage for the refrigerator compartment. Control the amount. Further, a frame-shaped dew-prevention damper heater is attached to the opening edge of the cold air inlet of the damper chamber by bending one end thereof, and a mechanical damper is provided in the damper holder for mounting the damper in the damper chamber,
When a plurality of heater press pieces are projected from a frame forming a frame portion of the cool air inlet and a damper is attached, the heater press pieces are brought into contact with bent portions of the heater to press the heater.

According to a second aspect of the present invention, in addition to the operation of the first aspect, the case fixing pieces protruding from both sides of the frame of the damper holder are attached to the lower rear portion of the refrigerator compartment, and when attached, the inside of the refrigerator compartment is mounted. By sandwiching the two heat-insulating damper chamber forming members forming the damper chamber,
Fix the damper holder while holding down the heater.

[0015]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a refrigerator-freezer according to an embodiment of the present invention with a door removed, and FIG. 2 is a side sectional view of the refrigerator-freezer.

In FIGS. 1 and 2, reference numeral 1 denotes a main body having a heat insulating structure (hereinafter referred to as a main body). The main body 1 is filled with a foamed heat insulating material 4 between an inner box 2 and an outer box 3 each having an open front surface. Is formed. Further, inside the main body 1, a refrigerator compartment 5, a freezer compartment 6 and a vegetable compartment 7 are formed in order from the top by a partition wall 8 having a heat insulating structure. 9 is a refrigerator 5
Is a drawer which also serves as a heat insulating door provided in the freezing compartment 6 and the vegetable compartment 7, and 11 is a shelf.

Behind the freezing room 6, a cooling room 14 in which a cooler 12 and a cool air circulation fan 13 are disposed.
Are formed, and a heat insulating shelf 11 is provided at the lower part of the refrigerator compartment 5.
An ice greenhouse 15 defined by a is provided. Also,
Behind the refrigerator compartment 5, a cold air duct 16 is provided.
The cool air duct 16 forms a cool room supply passage 18 for blowing cool air from the cooler 12 through a cool air outlet 17 provided in the cool room 5.

On the other hand, between the ice temperature chamber 15 and the inner box 2, cold air from the cooler 12 is supplied to the cold air supply passage 1
8 and a damper case 21 made of styrene foam or the like in which a damper chamber 20 in which a mechanical damper (hereinafter referred to as a damper) 19 is provided is formed.
Is provided.

Here, this damper case 21 is provided so as to communicate between the multi-duct 16 and the cooling chamber 14, and has therein a second cooling air supply passage 18 which communicates with the refrigerator compartment as shown in FIG. One communicating portion 22, a cold room passage 23 for supplying cold air to the vegetable room 7, and a cool air passage 24 for supplying ice to the ice room 15 are formed. In addition, this vegetable compartment cold air passage 23
The cool air blown out from is supplied to the vegetable room 7 through the cool air supply passage 23a for the vegetable room shown in FIG. Reference numeral 24a denotes a cool air outlet for blowing out cool air from the cold air passage 24 for the ice greenhouse to the ice greenhouse 15.

On the other hand, a second communication passage 25 for communicating the cooling chamber 14 and the damper chamber 20 is formed at a lower portion of the damper case 21, and cool air from the cooling chamber 14 is discharged by the cool air circulating fan 13. The fuel is supplied to the damper chamber 20 via the two-way passage 25. The damper chamber 20 is provided with a cool air inlet 26 through which cool air flows from the second communication passage 25, and a damper 19 as shown in FIG.

In the drawing, reference numeral 19a denotes a damper thermostat, and a baffle 19c is provided at the tip in accordance with the temperature of the refrigerator compartment detected by a sensor section 19b shown in FIG.
For opening and closing the cold air inlet 26 by opening and closing the arm 19d to which is attached. 19e is a temperature control knob, 19f is a metal part 1 of the baffle 19c.
It is a damper thermo-insulating material for preventing dew condensation on 9 g.

As shown in FIG. 5, which is an exploded view of the damper case 21, the damper case 21 has a front damper chamber forming member 27 and a middle damper chamber forming member 28.
And a rear damper chamber forming member 29. Here, the front damper chamber forming member 27 and the middle damper chamber forming member 28 are assembled, and as shown in FIG. 3, the damper chamber 20, the first communication portion 22, the cold room passage 23 for the vegetable room, and the ice room Each space portion to be the cold air passage 24 is formed. Further, the middle damper chamber forming member 28 and the rear damper chamber forming member 29 are assembled to form a space that becomes the second communication passage 25.

On the other hand, in FIG.
Is a damper heater (hereinafter, referred to as a heater) composed of a heater wire 31a and an aluminum foil 31b. These heaters 31 and the damper holder 30 are used when the main body 1 is assembled. After the rear damper chamber forming member 29 and the middle damper chamber forming member 28 are assembled in the main body 1, the heater 31 and the damper holder 30 are assembled in this order.

When the heater 31 is assembled as described above, the heater 31 is bonded to the opening edge of the cold air inlet 26, and when the heater 31 protrudes toward the first communication portion 22, the heater 31 is connected as shown in FIG. The upper end of 31 is bent. Then, after incorporating the heater 31 and the damper holder 30 in this manner, the damper 19 to which the damper thermo-insulating material 19f is attached is incorporated into the damper holder 30, and finally, the front damper chamber forming member 27 is attached to the middle damper chamber forming member 28. I try to assemble it.

On the upper part of the damper holder 30, there is provided a frame 30A which forms a frame of the cool air inlet 26 formed in the middle damper chamber forming member 28, and closes the cool air inlet 26. At this time, the baffle 19c contacts the frame 30A to close the cool air inlet 26. A plurality of heater pressing pieces 32 are protruded from the upper end of the frame 30A.

When the damper holder 30 is mounted next to the heater 31, the heater pressing piece 32 is
As shown in FIG. 8, the upper portion of the middle damper chamber forming member 28 facing the first communication portion 22 is to contact the bent portion of the heater 31 from above to prevent the heater 31 from rising. In this embodiment, the upper end portion of the opening edge is notched, and the bent portion of the heater 31 and the heater pressing piece 32 are accommodated in the notch portion 28a, so that the cold air in the first communication portion 22 is cooled. So as not to obstruct the flow.

On the other hand, at both ends of the frame 30A of the damper holder 30, as shown in FIG. Here, this holder fixing piece 33
When assembled, as shown in FIG. 6, the heater 31 is held in contact with both sides of the heater 31 and when the front damper chamber forming member 27 is assembled, as shown in FIG. Chamber forming member 27 and middle damper chamber forming member 2
8 for fixing the damper holder 30 holding the heater 31.

When such holder fixing pieces 33 are protruded from both ends of the frame 30A of the damper holder 30, the cold air flowing out of the cold air inlet 26 to the first communication portion 22 can be provided.
Vegetable room cold air passage 2 formed on the side wall of first communication portion 22
3 and the flow of the cool air flowing toward the inlets 23a and 24b (see FIG. 3) of the cool air passage 24 for the ice greenhouse. In this embodiment, the holder fixing piece 33 is provided so as not to hinder the flow of the cool air. , One on each end of the frame 30A
Only books protrude.

The heater 31 is pressed by the heater pressing piece 32 and the holder fixing piece 33, and the damper holder 30 is fixed through the holder fixing piece 33. Can only be held. Since the damper holder 30 does not exist in the first communication portion 22, unlike the conventional case where the heater 31 is held by the rib protruding from the front damper chamber forming member 27, the first communication portion is not provided. 22 is not narrowed and does not obstruct the flow of cool air.

Next, the assembling operation of the damper case of the refrigerator having the above-described structure will be described.

When assembling the damper case 21,
First, the rear damper chamber forming member 29 is assembled in front of the inner box 2 at the lower rear portion of the refrigerator compartment 5, and then the middle damper chamber forming member 28 is assembled to the rear damper chamber forming member 29. As a result, a space portion serving as the second communication passage 25 is formed between the middle damper chamber forming member 28 and the rear damper chamber forming member 29.

Next, a heater 31 is bonded to the edge of the cold air inlet 26 formed in the middle damper chamber forming member 28. At this time, the first communication portion 22 of the heater 31
The upper portion of the heater 31 protruding to the side is bent upward of the opening edge of the cool air inlet 26 as shown in FIG.

Next, the damper holder 30 is attached such that the frame 30A provided on the damper holder 30 contacts the front edge of the cool air inlet 26 to form the frame of the cool air inlet 26. When the damper holder 30 is attached in this manner, the heater pressing piece 32 projecting from the upper end of the frame 30A is positioned on the upper surface portion facing the first communication portion 22 of the middle damper chamber forming member 28, and the heater 31 And comes into contact with the bent portion from above, thereby preventing the heater 31 from rising. Further, holder fixing pieces 33 projecting laterally from both ends of the frame body 30A of the damper holder 30 abut on both sides of the heater 31, as shown in FIG.

Finally, the front damper chamber forming member 27 is assembled to the middle damper chamber forming member 28. Here, when the front damper chamber forming member 27 is assembled in this way, as shown in FIG. 3, the damper chamber 20, the first communication part 22, the vegetable room cold air passage 23, and the ice hot room cold air passage 24 become A space portion is formed. When the front damper chamber forming member 27 is assembled in this manner, the holder fixing piece 33 is sandwiched between the front damper chamber forming member 27 and the middle damper chamber forming member 28 as shown in FIG. , The damper holder 30 is fixed.

As described above, the frame 3 of the damper holder 30
A heater holding piece 32 is formed at 0A, and a damper holder 30 is formed.
When the heater 3 is mounted, the heater 3
By pressing 1, the bent portion of the heater 31 can be prevented from rising. Further, a holder fixing piece 33 is protruded from the frame 30A, and the holder fixing piece 33 is attached to the front damper chamber forming member 27 and the middle damper chamber forming member 2.
8, the damper holder 30 can be fixed.

[0037]

As described above, according to the first aspect of the present invention,
When a plurality of heater retainers are protruded from the damper holder and the damper holder is mounted, the heater retainers are brought into contact with the bent portion of the damper heater which is bent at one end to the opening edge of the cold air inlet of the damper chamber. By contacting and pressing the damper heater, the damper heater can be pressed without obstructing the flow of cool air and without raising the bent portion.

According to the second aspect of the present invention, in addition to the effects of the first aspect, the case fixing pieces provided on both sides of the frame of the damper holder are attached to the lower rear portion of the refrigerator compartment and are attached to the inside when attached. By sandwiching the two heat-insulating damper chamber forming members forming the damper chamber,
The damper case can be fixed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a refrigerator-freezer according to one embodiment of the present invention with a door removed.

FIG. 2 is a front view of the main body of the refrigerator.

FIG. 3 is a front sectional view of a damper case attached to the main body.

FIG. 4 is a side sectional view of the damper case.

FIG. 5 is an exploded view of the damper case.

FIG. 6 is a front sectional view of a main part of the damper case.

FIG. 7 is a sectional view taken along line AA of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 5 Refrigerator room 6 Freezer room 8 Partition wall 12 Cooler 14 Cooling room 18 Cold air supply path for refrigerator rooms 19 Mechanical damper 20 Damper room 22 1st communicating part 26 Cold air inlet 27 Front damper room forming member 28 Middle damper room Forming member 30 Damper holder 31 Damper heater 30A Frame 32 Heater holding piece 33 Holder fixing piece

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Akira Tokui 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Inside Sanyo Electric Co., Ltd. (72) Inventor Hidefumi Mogi 2-5-1 Keihanhondori, Moriguchi-shi, Osaka No. 5 Inside Sanyo Electric Co., Ltd. (56) References JP-A-5-302778 (JP, A) JP-A-7-19709 (JP, A) JP-A-55-59288 (JP, U) JP-A-58-58 57680 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 17/08 312

Claims (2)

(57) [Claims] 1. A cooler disposed in a cooling chamber formed behind a refrigerator compartment, wherein the interior of a body of a heat insulating structure having a front opening is partitioned by a partition wall into a refrigerator compartment and a freezer compartment in order from the top. A refrigerator air passage formed at the back of the refrigerator compartment for supplying cool air from the cooler to the refrigerator compartment, and communicating the refrigerator air passage with the refrigerator compartment. A damper chamber; a cold air inlet provided in the damper chamber for allowing cool air from the cooling chamber to flow into the damper chamber; and a cold air passage arranged in the damper chamber and changing a degree of opening of the cold air inlet to the cold air passage for the refrigerator compartment. A mechanical damper for controlling the amount of cool air to be supplied, a frame-shaped dew condensation preventing damper heater having one end bent at the opening edge of the cool air inlet of the damper chamber, and the mechanical damper being a damper. A damper holder provided with a frame that forms a frame of the cold air inlet while being attached to a chamber, and abutting on a bent portion of the damper heater when the mechanical damper is mounted on the frame of the damper holder. A refrigerator comprising: a plurality of heater press pieces for pressing the heater; 2. A cooler disposed in a cooling chamber formed behind a refrigerator compartment, wherein the interior of the body of the heat insulating structure having a front opening is partitioned by a partition wall into a refrigerator compartment and a freezer compartment in order from the top. A refrigerator air passage formed at the back of the refrigerator compartment for supplying cool air from the cooler to the refrigerator compartment, and communicating the refrigerator air passage with the refrigerator compartment. A damper chamber, a damper chamber forming member having two heat insulating structures attached to the lower rear portion of the refrigerator compartment and forming the damper chamber when mounted, and formed on one of the two damper chamber forming members. A cold air inlet for allowing cool air from the cooling chamber to flow into the damper chamber; and a mechanical type disposed in the damper chamber for changing the degree of opening of the cold air inlet to control the amount of cold air supplied to the cold air passage for the refrigerator compartment. A damper heater for preventing dew condensation, which is attached to the opening edge of the cold air inlet of the damper chamber by bending one end thereof; and forming the frame of the cold air inlet while attaching the mechanical damper to the damper chamber. A damper holder provided with a frame body to be provided, and a plurality of heater pressing pieces that press against the bent portion of the damper heater when the mechanical damper is attached to the upper end of the frame body of the damper holder to press the heater. A refrigerator-freezer characterized in that a holder fixing piece which is sandwiched by the two damper chamber forming members and fixes the damper holder is provided on both sides of the frame while being protruded.