KR20050113237A - Refrigerator - Google Patents

Abstract

Machine room 30 having a compressor 31 disposed thereon, aiming to provide a refrigerator in which a cold air environment path for a storage box is improved to reduce heat leakage to the outside and improve cooling efficiency to reduce power consumption. Storage boxes (11) and (12) held at the inner surface of the storage compartment (7) and the door (9) for blocking the front opening of the storage compartment, which are installed in the front through the heat insulating wall (27) adjacent to the door and simultaneously with the salt; A cold air outlet 19 installed at the back of the storage compartment to introduce cold air into the storage box, an outlet 25 installed at the back of the storage box to return the cold air circulated inside the box to the cooler 13, and the outlet And a return duct (26) provided between the suction port of the cooler and the return duct, characterized in that the return duct is provided so as to cover the insulating wall surface facing the machine room with a gap therebetween.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator, and more particularly, to an improvement in the cold air flow path structure which improves the cooling efficiency in a storage compartment.

Conventionally, in a refrigerator, a storage compartment, for example, a freezer compartment, which is installed at a lower part of a main body in a refrigerator, is configured by a fan 54 to cool air generated by a cooler 53 installed at a back of a main body as shown in FIG. It is comprised so that the foodstuffs which take out and are stored in the room from the outlet 59 of the back surface of the freezing chamber 47 may be cooled.

And the cold air which cooled the foodstuff reaches the front upper part of the storage boxes 51 and 52 as shown by the arrow, and the clearance of the inner plate 49a of the drawer door 49 and the front surface of the storage box 52, and also From the return duct 66 through the clearance between the bottom surface of the storage box 51 and the bottom wall of the storage compartment 51 and the clearance between the machine compartment wall surface 57 on which the compressor 61 on the rear side is disposed at the bottom surface of the storage box 51. The circulation which returns to the cooler 53 is performed.

In the above configuration, the cold air reaching the front upper part of the storage box 52 is heated by the heat of the frost-proof pipe 50 which is a high-temperature refrigerant pipe for preventing condensation on the partition wall 46 or the opening front surface 46a. Therefore, while preventing condensation, there is a problem that the cooling efficiency is lowered by heating the air above all of the freezer compartment 47.

In order to prevent this, a packing 63 indicated by a double-dotted line is installed in the upper gap portion of the storage box 51 near the partition wall 46, and the frost preventing pipe 50 or the door gasket ( A structure is proposed to prevent cold air inflow into the gasget 64 and prevent the temperature rise of cold air (for example, Japanese Patent Application Laid-Open No. 10-96584 (paragraphs 4 and 5). ) Reference).

However, also in the above patent document, the cold air reaching the front upper part of the storage boxes 51 and 52 is stored in the storage box 52 and the drawer at the upper part of the storage box 52 or the opening 52a provided in the front wall of the storage box. It flows down the gap A with the door inner plate 49a and returns to the return duct 66 through the bottom wall of the storage box 51 or the back gap facing the high temperature refrigerant compressor 60. Since the temperature rise due to heat leakage is large as the configuration flows through the relatively high temperature insulating wall surfaces 57 and 58 around the box 51, the cooling power to the storage boxes 51 and 52 is lowered, and the cooler 53 is further reduced. The return air to) also increased in temperature, resulting in a decrease in heat exchange efficiency.

The present invention has been made in view of the above reasons, and improves the cold air environment path for the storage boxes (51, 52) to reduce heat leakage to the outside, and further improves the cooling efficiency to provide a refrigerator that reduces the amount of power consumption will be.

1 is a longitudinal sectional view of a refrigerator showing one embodiment of the present invention;

FIG. 2 is a longitudinal sectional view showing details of the main part of FIG. 1; FIG.

3 is a schematic perspective view showing a flow state of cold air in FIG. 2;

4 is a longitudinal cross-sectional view of the same part as FIG. 2 showing another embodiment of the present invention;

5 is a perspective view showing another embodiment of the storage box of the present invention;

6 is a side view showing another embodiment of the lid structure of the present invention;

7 is a longitudinal sectional view showing another embodiment of the return duct of FIG. 2;

8 is a perspective view of a storage box portion showing another embodiment of the configuration of FIG.

9 is a perspective view of the same part as FIG. 8 showing a modification of the present invention, and

10 is a longitudinal cross-sectional view of the same part as FIG. 2 showing a conventional example.

In order to solve the above problems, the refrigerator of claim 1 of the present invention is installed on a storage box and a storage box which simultaneously maintains the front opening of the storage compartment and simultaneously releases the salt into the storage compartment, and introduces cold air into the storage compartment. Outlet, a seal piece extending from the upper portion of the storage compartment to the leading edge of the storage box to block the outflow of the cold air discharged from the rear surface, and installed on the back of the storage box to cool the air inside the box. It consists of an outlet for returning to the cooler, a return duct installed between the outlet and the suction inlet of the cooler, characterized in that to return to the cooler without flowing out the cold air from the cold outlet at least in front of the storage box.

With the above configuration, the food in the storage box can be directly cooled by the cold from the cold air outlet, and the cold air after circulating inside the box does not pass through the gap around the box, and returns to the cooler part, so that no hot leakage occurs in the hotter part. In addition, efficient cooling can be performed.

In addition, the refrigerator of claim 5 is stored in the storage compartment installed in front of the machine room adjacent to the compressor through a heat insulating wall, and the storage box and the storage compartment which are kept on the inner surface of the door closing the front opening of the storage compartment and simultaneously with the salt. A cold air outlet which is installed in the distribution of the cold air outlet to introduce cold air into the storage box, an outlet which is installed on the back of the storage box to return the cold air circulated inside the box to the cooler, and a return provided between the outlet and the suction port of the cooler It is made of a duct, the return duct is characterized in that it is installed so as to cover the insulating wall surface facing the machine room with a gap.

According to the above configuration, the food in the storage box can be satisfactorily cooled by the cold air from the cold air outlet, and the cold air after circulating inside the box is not affected by the heat of the heat insulation wall surface corresponding to the high temperature machine room by the return duct. Since it returns to the cooler part, heat leakage can be suppressed and efficient cooling can be performed, and power consumption can be reduced.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described based on drawing. As shown in FIG. 1, which is a longitudinal cross-sectional view of the main part of the refrigerator, the refrigerator main body 1 having a plurality of storage spaces having a plurality of storage spaces by separating the interior into a heat insulation wall has the largest storage capacity with a high frequency of use at the top thereof. The refrigerating chamber 2 is arrange | positioned, and the front opening part is closed by the door 3 pivoted so that rotational movement is free to one side of the main body.

In the lower part of the refrigerating compartment (2), a vegetable compartment (4) for storing vegetables and the like maintained at a slightly higher temperature than the refrigerating compartment temperature is provided through a partition plate, and an upper chamber set as an ice making chamber or a temperature conversion chamber in the lower part of the vegetable compartment (4) The freezing chamber 7 is arrange | positioned independently in (5) and the lower part through the heat insulation partition wall 6, respectively.

The vegetable compartment 4 or the freezing compartment 7 has its front opening closed by doors 8 and 9, and is fitted with a frame (not shown) extending in the storage compartment inward direction on the inside of the door. (10, 11) is installed and the storage boxes (10, 11) of the door (8, 9) by sliding by inserting the roller (not shown) mounted on the rear end of the frame and the rail member installed on the inner wall of the refrigerator. It is installed to be taken out in the front-rear direction by opening and closing.

The freezer compartment 7 is provided with a refrigeration cooler 13 for supplying cold air to a freezing space such as an ice making chamber or a freezer compartment and cooling it to a freezing temperature, and a fan for circulating cold air in the upper part of the cooler 13 ( 14).

In addition, in the refrigerating spaces such as the refrigerating chamber 2 and the vegetable chamber 4, a refrigerating cooler 15 and a refrigerating fan 16 are provided in the rear of the vegetable chamber 4.

As shown in detail in FIG. 2, the front surface of the freezing cooler 13 and the fan 14 is covered with a cooling chamber cover 17 that forms the rear wall of the freezing chamber 7, and also the cooling cover 17. The discharge duct 18 is formed in front of the ().

A part of the cold air from the discharge duct 18 is introduced into the upper chamber 5, and the other cold air is formed integrally extending from the discharge duct 18 so as to face up and down of the interior rear surface of the lower freezing chamber 7 It is guided to the cold air blowout openings 19a and 19b which open in a position, and is discharged from an opening to a room.

The storage box in the freezer compartment 7 is divided into two stages of the lower box 11 and the upper box 12, and the upper box 12 having a relatively thin bottom formed in the upper opening of the lower box 11. Are arranged up and down using a peripheral edge flange or the like.

The lid 20 is fixed to the ceiling of the freezer compartment 7 so as to cover the upper opening of the box on the upper and lower boxes 12 and 11, and the cold air outlet 19a has the lid 20 and the upper box ( It is opened between the upper back surfaces of 12) and the cold air from the cooler is taken out directly into the upper box 12.

A gap 21 is formed between the front wall of the upper box 12 and the front wall of the lower box 11, and the front upper part of the upper box 12 is bent forward to contact the front wall of the lower box 11. In addition, the cold air passage 22 is opened at the bent portion so that the cold air flows into the lower box 11 as shown by the arrow.

However, at the front edge of the lid 20, the seal piece 23 is extended at the lower part of the front part through the entire width of the lower box 11, and the front end thereof is extended to the lower box ( By contacting the upper inner surface of 11), the outflow of the box 11 of the cold air discharged from the rear surface is blocked, and the cold air is applied to the door gasket 24 of the door inner plate 9a portion or the partition wall 6 portion. To prevent it from falling.

In addition, by installing the outlet 25 of the cold air in the rear of the lower box 11, the cold air circulated inside the lower box in the upper box is discharged out of the box, and the suction side of the cooler 13 is integrally formed at the outlet 25. The return duct 26 is formed so as to return the cool air to the cooler 13.

The return duct 26 is located between the cold air outlet 19b as a schematic perspective view as shown in FIG. 3, and protrudes toward the heat insulating wall at the rear side from the outlet 25 opened downward of the bottom of the lower box 11. And the duct plate 26a is disposed so as to cover a small gap without covering the surface of the rear heat insulating wall 27 facing the compressor 31 disposed in the machine room 30 at the lower part of the main body, A side plate 26b is provided between the cold air outlet 19b to form a return passage.

In addition, the upper box 12 is placed on the lower box 11 as shown in FIG. 4 in which the same reference numerals are attached to the same parts as in FIG. 2 instead of the gap 21 of the upper box 12 and the lower box 11. , The sealing piece 23 in the partition wall 6 is in contact with the upper end of the upper box 12 to block the extraction of cold air to the gasket portion in front of the box, and also to the front bottom surface of the upper box 12. The cold air flow opening 22 'may be provided, and the above configuration also enables effective circulation of cold air in the same manner as described above.

In addition, the said outlet 25 is not necessarily a constitution, and it may make it circulate cold air from the clearance gap of the lower box 11 and the upper box 12 at the back as shown in FIG. By providing the wind direction guide piece 20a on the front lower surface of the front surface 20, it is possible to appropriately distribute the cold air to the upper box 11 and the lower box 12.

By the configuration as described above, the bottom wall 58 and the machine room in which the cold air at the outlet 59 are arranged around the storage boxes 51 and 52, i.e., the door inner plate 49a or the outer surface, as in the prior art. The cold air itself rises in temperature by circulating the inner circumferential wall of the freezer compartment 47 that rises in temperature under the influence of high temperature outside air, such as a lower rear wall 57 under the heat effect of the compressor 61 disposed in the heat sink, As a result, the drawback of lowering the cooling power used for the stored food can be eliminated, and the decrease in the pressure loss caused by the circulation around the box can be reduced, making it easier to flow the cold air.

In addition, by circulating the cold air taken out from the cold air outlets 19a and 19b into the lower box 11 in the upper box 12, the stored food can be directly cooled by a cold having a high flow rate and maintaining a low temperature. Cooling power is large, can be efficiently frozen and the outlet 25 is installed below the lower box 12 can improve the circulation performance of the cold air flowing into the box 12 from the top. In addition, the return duct 26 integrally formed with the lower box 12 can be easily formed, and manufacturing cost can be reduced, and mounting work of the rear part such as the discharge duct 18 can be facilitated.

The outlet port 25 is provided with a rib 32 protruding inwardly of the storage box 12, and even if the outlet port 25 is blocked by the stored product, the passage of the cold air is secured by the protruding rib 32. . In addition, the outlet 25 allows the cold air after circulation to flow out from the gap between the upper side of the lower box 12 and the lower box 11 at the rear without protruding from the box back, and the suction port of the cooler 13 in the gap. The return duct 26 may be extended so as to be oriented, and the side plate 26b for restricting the width dimension of the return duct 26 may not be particularly provided.

In addition, the upper wall top of the upper box 12 or the lower box 11 for the door inner plate (9a) is an arc-shaped protruding piece at both ends of the upper box 11 or 12 as shown in FIG. 28) may be provided, and the tip may be in contact with the surface of the door inner plate 9a. In this way, the heat conduction with the door inner plate 9a can be suppressed to the minimum by the arc-shaped protruding piece 28.

In addition, the lid is not fixed to the partition wall ceiling as in the above embodiment, but has a circumferential portion 20b at a peripheral edge that fits into the opening shape of the storage box 11, for example, as shown in FIG. In the groove 20c formed as the cover B 20 'and formed in the circumferential part 20b on the back side of the cover B 20', the cold air blowout outlet 19 is opened in a box, and the rear end of the storage box 11 is also provided. The grooved guides 20d having the inclined surface formed at the rear end of the cover B 20 'with the roller 29 protruding from the box upper surface provided in the box are fitted to each other.

According to the above configuration, when the door is closed, the peripheral edge of the circumference 20b of the lid B 20 'is inserted by fitting the roller 20 and the groove guide 20d projecting together as shown in Fig. 6A. The upper circumferential edge of the storage box 11 is covered, and even if the cold air from the cold air outlet 19 of the distribution is introduced into the box 11, all the cold air is drawn inside the door at the front end of the storage box 11. It can be prevented from leaking to the side part, and the cooling power with respect to the food in the box 11 can be maintained large.

When the door is opened, the roller 29 escapes from the groove part by the inclined portion of the groove guide 20d in conjunction with the forward movement of the storage box 11 which is held in the door and taken out as shown in FIG. It acts to lift the B 20 ', and since only the box moves forward by the roller 29, the operation of taking out the storage box 11 is not impeded.

Since the return duct 26 is disposed apart from the surface of the heat insulation wall 27 on the lower rear surface having a large heat leakage degree corresponding to the high temperature compressor 31 disposed in the machine room 30, the heat duct due to conduction is prevented. It can remove and keep the low temperature of cold air, and can maintain high cooling power used for a stored food.

In addition, as shown in FIG. 7, the return duct 26 is integrally formed with the cold air duct member 18 on the rear surface of the main body, and the inner surface of the rear heat insulating wall 27 facing the front end of the compressor 31 is formed. Therefore, if it faces toward the outlet port 25 of the storage box 11, it can be arrange | positioned in the corresponding part of the compressor 31, without being influenced by the height position of the outlet port 25, and with the surface of the heat insulation wall 27 The clearance dimension management can also be facilitated, and the configuration of the drawer type storage box 11 is not complicated. In summary, the cold air flowing in the return duct 26 may not be in contact with the rear heat insulating wall 27 forming the inner wall of the freezing chamber 7, which is a storage chamber, and may be free from heat conduction.

As shown in FIG. 8, which is another embodiment, the cold air outlet 19 'may be disposed at the center portion of the storage compartment distribution, and the outlet 25' may be provided on both sides of the storage box 11 '. At this time, the return duct 26 'does not come into contact with the surface of the rear insulation wall 27 in the same manner as in the above embodiment, but arranges the duct plate 26a' so as to cover the gap with a slight gap, and the outlet 25 ' The side path 26b 'may be provided in the position of the width dimension of ()) to form a return passage.

In addition, as shown in FIG. 9, a part of the circulating cold air is led outward from the cold air outlet 33 provided on the side wall of the storage box 11 "without forming the side plates 26b and 26b ', thereby allowing the cold air to flow out. The outside may be smoothly returned to the cooler 13 via the return duct 26 "from the outside, and in this case, even if the outlet 25" of the back of the box is blocked by the stored goods, the cold air outlet 33 on the side surface may be made. The cold air passage can be used, and the return cold air can reduce the heat leakage without flowing through the portion of the rear insulation wall 27 in the center portion corresponding to the compressor having the highest temperature.

In each of the above embodiments, the storage box has been described as a configuration consisting of two upper and lower boxes, but the gist of the present invention is not limited to this, but may be a configuration of only the lower box, and the partition 20 is also insulated from the lid 20. If the film is thick and sufficiently insulated, it is not necessary, and the seal piece 23 extends directly downward from the ceiling of the partition wall 6 so as to be in contact with all upper edges of the storage boxes 11 and 12. good.

In addition, although the storage box in a freezer compartment was demonstrated as an Example in the said structure, it cannot be overemphasized that it can apply also to a vegetable compartment or another storage compartment structure not limited to this.

The present invention can be used as a cooling efficiency improvement and power consumption reduction configuration of a refrigerator provided with a drawer type storage box.

Claims (9)

A storage box which is maintained on the inner surface of the door to close the front opening of the storage compartment and simultaneously releases the door to the salt; a cold air outlet installed in the distribution chamber of the storage compartment to introduce cold air into the storage box; and extends from the top of the storage chamber to the front edge of the storage box; A seal piece for blocking the outflow of the cold air discharged from the rear surface, an outlet for returning the cold air circulated inside the box to the cooler, provided between the outlet and the inlet of the cooler. And a return duct, wherein the cold air at the cold air outlet is returned to the cooler without spilling at least the front of the storage box. The method of claim 1, And a cover plate covering an upper portion of the storage box, and contacting the inner end of the storage box with an extended end of the seal piece installed at the front end of the cover plate, thereby preventing cold air from flowing forward. The method of claim 2, A protrusion is provided at the rear upper edge of the storage box, and a groove guide is formed at the rear end of the peripheral edge of the cover plate covering the upper part of the storage box, and the protrusions are inserted into the groove guide to cover the upper surface of the opening of the storage box. A refrigerator, which is covered with a plate and pushes up the cover plate by escaping from the groove guide by forward movement of the storage box, and enables forward movement of the storage box. The method of claim 1, And a storage box divided into an upper box and a lower box, and introducing cold air taken out of the upper box into the lower box from a cold air passage installed in all of the upper boxes. A storage compartment installed in front of the machine chamber adjacent to the compressor chamber, the storage box being kept on the inner surface of the door to block the front opening of the storage compartment, and simultaneously storing the door with salt, installed inside the storage compartment to store cold air. A cold air outlet introduced into the box, an outlet for returning the cold air circulated inside the box to the cooler, and a return duct provided between the outlet and the inlet of the cooler, and the return duct is the machine room. A refrigerator comprising: a heat insulating wall surface facing the cover is provided so as to cover a gap. The method of claim 5, A refrigerator comprising cold air outlets at both sides of the storage compartment distribution, and return ducts disposed at positions opposite to the compressor between the cold air outlets. The method of claim 5, A refrigerator comprising a cold air outlet at a central portion of a storage compartment and an outlet at both sides of the storage box. The method of claim 5, And a return duct formed by integrally extending from the outlet of the storage box. The method of claim 5, And a return duct integrally installed from the cold air duct on the back of the main body to face the outlet of the storage box.