CN108870832B

CN108870832B - refrigerator

Info

Publication number: CN108870832B
Application number: CN201710328054.4A
Authority: CN
Inventors: 陈佳; 田勇; 董冰冰; 陈秀鹏
Original assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Current assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2021-05-04
Anticipated expiration: 2037-05-11
Also published as: CN108870832A

Abstract

A refrigerator (10) comprising: a refrigerating chamber (11); a freezing chamber (12); an evaporator chamber (13) located between the refrigerating chamber (11) and the freezing chamber (12) in a height direction of a refrigerator (10); a return duct (20) communicating the refrigerating chamber (11) and the evaporator chamber (13); the return duct (20) includes: a first passage (21) communicating with the evaporator chamber (13), the first passage (21) being disposed obliquely with respect to a first plane (A) in which a direction perpendicular to the height direction is located. The air return duct (20) can prevent condensed water from being retained and frozen in the air return duct (20), and the air return duct (20) can not be blocked.

Description

Refrigerator with a door

Technical Field

The invention relates to the technical field of refrigeration appliances, in particular to a refrigerator.

Background

The frost-free refrigerator includes a refrigerating chamber and a freezing chamber, and an evaporator chamber located between the refrigerating chamber and the freezing chamber, the evaporator chamber having an evaporator therein. The cold storage chamber is communicated with the evaporator chamber through an air return channel, warm air in the cold storage chamber flows into the evaporator chamber through the air return channel, and the evaporator cools the warm air and then blows the warm air to the cold storage chamber and the freezing chamber respectively. Because the temperature of the evaporator chamber is low, warm air in the refrigerating chamber is easy to be desublimated and frosted in the air return channel, and frost layers grow and accumulate continuously to block the air return channel, so that heat exchange is influenced, and then refrigeration of the evaporator is influenced.

Disclosure of Invention

One of the technical problems to be solved by the invention is that the warm air in the refrigerating chamber is easy to be desublimed and frosted in the air return channel to block the air return channel.

The present invention provides a refrigerator, comprising: a refrigerating chamber; a freezing chamber; an evaporator chamber located between the refrigerating chamber and the freezing chamber in a height direction of the refrigerator; the air return duct is communicated with the refrigerating chamber and the evaporator chamber; the return air duct includes: a first passage communicating with the evaporator chamber, the first passage being disposed obliquely with respect to a first plane in which a direction perpendicular to the height direction is located.

When the 'warm air' in the refrigerating chamber is liquefied in the return air duct, the condensed water can flow to the evaporator of the evaporator chamber along the first channel. The condensate water can be prevented from being detained and frozen in the air return duct, and the air return duct can not be blocked.

Optionally, the return duct further includes: a second passage having one end communicating with the refrigerating chamber and the other end communicating with the first passage; the second channel is obliquely arranged relative to the first plane or is perpendicular to the first plane.

Because the second channel is vertical to the first plane, the condensed water can quickly flow into the first channel under the action of gravity; and because the first channel is obliquely arranged relative to the first plane, the condensate can quickly flow into the evaporator chamber. Therefore, under the combined action of the first channel and the second channel, the phenomenon of de-sublimation and frosting in the return air duct can be greatly reduced.

Optionally, the refrigerator further comprises: the wall of the first inner container encloses the refrigerating chamber; the second channel extends along the outer surface of the liner wall of the first inner liner.

Optionally, the return duct further includes: the connector, the connector is including being first portion and the second part that the angle set up, first portion intercommunication first passageway, the second part intercommunication the second passageway.

Optionally, the first portion and the second portion are connected by an arcuate segment.

After the arrangement, the condensed water can flow into the first channel along the arc-shaped section quickly and is not retained at the connector, so that the condensation and frosting are avoided.

Optionally, the first portion is parallel to the first channel.

Optionally, the second portion is parallel to the second channel.

Optionally, the first channel is inclined at an angle of 10 ° to 30 ° to the first plane. The first channel is made of plastic, the surface of the first channel has certain roughness, and the space of the first channel is limited, when the first channel is inclined relative to the first plane at an angle of 10-30 degrees, the condensate in the first channel can rapidly flow into the evaporator chamber through the air outlet of the first channel without being retained in the first channel.

Optionally, the air return duct is made of a plastic material. The air return duct can be integrally formed through an injection molding process, so that the quality of the air return duct is reduced. Meanwhile, the thickness of the air return duct can be designed to be between 2mm and 3mm, and deformation of the air return duct caused by a foaming process is prevented.

Optionally, the air outlet of the second channel penetrates through the liner wall of the first liner.

Compared with the prior art, the technical scheme of the invention has the following advantages:

the return duct of the present invention has a first passage provided obliquely with respect to a first plane in which a direction perpendicular to the height direction is located, the first passage communicating with the evaporator chamber. When the 'warm air' in the refrigerating chamber is liquefied in the return air duct, the condensed water can flow to the evaporator of the evaporator chamber along the first channel. The condensate water can be prevented from being detained and frozen in the air return duct, and the air return duct can not be blocked.

Drawings

Fig. 1 is a front view of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a refrigerator showing a refrigeration compartment, an evaporator compartment and a return air duct in accordance with an embodiment of the present invention;

FIG. 3 is a perspective view of a return air duct in accordance with an embodiment of the present invention;

FIG. 4 is a half sectional view of a return air duct in accordance with an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, the present invention provides a refrigerator 10, the refrigerator 10 including, in a height direction (shown by an X direction in fig. 1) of the refrigerator 10: a refrigerating chamber 11 and a freezing chamber 12, the refrigerating chamber 11 being located above the freezing chamber 12; the refrigerating chamber 11 is surrounded by the wall of the first inner container 15, and the freezing chamber 12 is surrounded by the wall of the second inner container 16. An evaporator chamber 13 is further provided between the refrigerating chamber 11 and the freezing chamber 12, and referring to fig. 2, the evaporator chamber 13 has an evaporator 14 therein for performing a cooling function.

Specifically, the refrigerating chamber 11 and the evaporator chamber 13 are communicated through the return duct 20. Referring to fig. 3 and 4, the return duct 20 includes: the first channel 21 and the second channel 22, and the first channel 21 and the second channel 22 are formed by injection molding, and the material used may be plastic. The evaporator chamber 13 and the refrigerating chamber 11 have a foamed layer therebetween, the first passage 21 is disposed in the foamed layer to extend in the width direction (perpendicular to the height direction X) of the refrigerator 10, and the air outlet 25 of the first passage 21 communicates with the evaporator chamber 13.

Referring to fig. 1, the second channel 22 extends along an outer surface 151 of the container wall of the first container 15 in the height direction, and one end of the second channel 22 has an air outlet 24 (see fig. 3). Referring to fig. 2, the air outlet 24 of the second passage 22 penetrates through the wall of the first inner container 15 to communicate the second passage 22 with the refrigerating compartment 11. The other end of the second passage 22 communicates with the first passage 21.

The "warm air" in the refrigerating chamber 11 flows into the return duct 20 through the air outlet 24 on the second passage 22, and flows along the second passage 22, the first passage 21 in sequence, and finally flows into the evaporator chamber 13 through the air outlet 25 on the first passage 21. The "warm air" in the refrigerating chamber 11 is refrigerated in the evaporator chamber 13, and the "warm air" is refrigerated by the evaporator 14 and then blown to the refrigerating chamber 11 and the freezing chamber 12, respectively.

The air return duct 20 of the present invention is not entirely extended in the height direction, but is "L-shaped". This extends the flow path of the "warm air" in the refrigerating compartment 11 and prevents the "warm air" in the refrigerating compartment 11 from rapidly flowing into the evaporator chamber 13, which may cause the temperature in the refrigerating compartment 11 to be too low, and particularly the bottom of the refrigerating compartment 11 near the evaporator chamber 13 where the temperature is low, which may easily cause the frost to be sublimated.

After the air return duct 20 is designed to be L-shaped, the air return duct 20 is beneficial to preventing the interior of the air return duct 20 from being desublimed and frosted. Since the first passage 21 of the return duct 20 is located in the foaming layer between the evaporator chamber 13 and the refrigerating chamber 11, the first passage 21 is close to the evaporator chamber 13 with a relatively low temperature, and after the "warm air" in the refrigerating chamber 11 flows into the first passage 21 from the second passage 22, the "warm air" in the second passage 22 is likely to be sublimated and frost, and the second passage 22 is easily blocked.

For this reason, referring to fig. 2, the first passage 21 of the present embodiment is disposed obliquely with respect to a first plane (shown by a in fig. 2) in which a direction perpendicular to the height direction is located. So arranged, when the "warm air" in the refrigerating chamber 11 is liquefied by cooling in the first passage 21, the condensate can flow along the first passage 21 to the evaporator 14 of the evaporator chamber 13. The condensate water can be prevented from being retained, condensed and frosted in the first channel 21, and the first channel 21 can not be blocked.

Since the material used for the first channel 21 is plastic and is limited by the space in which the first channel 21 is located, the angle (shown by α in fig. 2) at which the first channel 21 is inclined relative to the first plane cannot be set arbitrarily, and the inventor has found through many studies that: the first passage 21 is inclined at an angle α of 10 ° to 30 °, including 10 ° and 30 °, to the first plane a, and the condensate in the first passage 21 can flow into the evaporator chamber 13 through the air outlet 25 quickly without being retained in the first passage 21.

In addition, for the purposes of this embodiment, referring to fig. 1 and 2, the second channel 22 is perpendicular to the first plane a, and in other embodiments, the second channel may be disposed obliquely to the first plane. Once the condensate water is present in the second channel 22, it can flow rapidly into the first channel 21 under the action of gravity, since the second channel 22 is perpendicular to the first plane a; and since the first passage 21 is disposed obliquely with respect to the first plane, the condensate can be quickly flowed into the evaporator chamber 13 again. Therefore, in the present embodiment, under the combined action of the first passage 21 and the second passage 22, the phenomenon of de-sublimation and frost formation in the return air duct 20 can be greatly reduced.

Referring to fig. 2 and 3, in the present embodiment, the air return duct 20 further includes: the connector 23, the connector 23 also has a hollow cavity. Referring to fig. 4, the connection head 23 includes a first portion 231 and a second portion 232 that are angularly disposed. The first passage 21 is inserted in the hollow cavity of the first part 231 and is parallel to the first part 231 to enable communication with the first part 231. Likewise, the second channel 22 is interposed within the hollow cavity of the second portion 232 and is parallel to the second portion 232 to enable communication with the second portion 232.

After the connector 23 is disposed, if condensed water is generated in the return air duct 20, the condensed water sequentially passes through the second channel 22, the connector 23 and the first channel 21, and finally flows into the evaporator 14. In order to prevent the condensate from being retained at the connection joint 23 and not flowing into the first passage 21 quickly, referring to fig. 4, in the present embodiment, the first portion 231 and the second portion 232 are connected by the arc-shaped section 233. After the arrangement, the condensed water can flow into the first channel 21 along the arc-shaped section 233 quickly, and is not retained at the joint 23, so as to avoid sublimation and frost formation.

It should be noted that, in the present embodiment, the thickness of the air return duct 20 is between 2mm and 3mm, including 2mm and 3 mm. The thickness of the return air duct 20 refers to the wall thickness of the wall of the return air duct 20 forming the hollow cavity. Thus, the return duct 20 is prevented from being deformed by the foaming process.

In the present invention, each embodiment is written in a progressive manner, and the differences from the previous embodiments are emphasized, and the same parts in each embodiment can be referred to the previous embodiments.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A refrigerator (10) comprising:

a refrigerating chamber (11);

a freezing chamber (12);

an evaporator chamber (13) located between the refrigerating chamber (11) and the freezing chamber (12) in a height direction of a refrigerator (10);

a return duct (20) communicating the refrigerating chamber (11) and the evaporator chamber (13);

characterized in that the return duct (20) comprises:

a first passage (21) communicating with the evaporator chamber (13), the first passage (21) being disposed obliquely with respect to a first plane (A) in which a direction perpendicular to the height direction is located.

2. A refrigerator (10) as claimed in claim 1, wherein the return duct (20) further comprises: a second passage (22) having one end communicating with the refrigerating chamber (11) and the other end communicating with the first passage (21); the second channel (22) is arranged obliquely with respect to the first plane (A) or perpendicular to the first plane (A).

3. A refrigerator (10) as claimed in claim 2, characterized in that the refrigerator (10) further comprises: a first inner container (15), wherein the inner wall of the first inner container (15) is enclosed into the refrigerating chamber (11); the second channel (22) extends along an outer surface (151) of the liner wall of the first liner (15).

4. A refrigerator (10) as claimed in claim 2, characterized in that the return duct (20) further comprises: connector (23), connector (23) are including being first part (231) and second part (232) of angle setting, first part (231) intercommunication first passageway (21), second part (232) intercommunication second passageway (22).

5. A refrigerator (10) as in claim 4 wherein the first section (231) and the second section (232) are connected by an arcuate segment (233).

6. A refrigerator (10) as in claim 4 wherein the first section (231) is parallel to the first channel (21).

7. A refrigerator (10) as in claim 4 wherein the second portion (232) is parallel to the second channel (22).

8. A refrigerator (10) as in claim 1, characterized by the first channel (21) being inclined at an angle of 10 ° to 30 ° with respect to the first plane (a).

9. A refrigerator (10) as claimed in claim 1, characterized in that the return air duct (20) is of plastic material.

10. A refrigerator (10) as in claim 3, characterized by the air outlet (24) of the second channel (22) passing through the wall of the first inner container (15).