CN216448442U

CN216448442U - Refrigerator

Info

Publication number: CN216448442U
Application number: CN202123145280.XU
Authority: CN
Inventors: 杨军
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-06
Anticipated expiration: 2031-12-14

Abstract

The utility model relates to a refrigerator, which comprises a refrigerator body, a middle beam and a partition plate, wherein a first chamber and a second chamber which are vertically spaced are arranged in the refrigerator body; a ventilation air duct is arranged in the middle beam; the partition plate is arranged between the first compartment and the second compartment; an air inlet pipeline and an air outlet pipeline are embedded in the partition board; one end of the air inlet pipeline is communicated with the first chamber, and the other end of the air inlet pipeline is communicated with one end of the ventilation air channel; the other end of the ventilation air duct is communicated with an air outlet pipeline which is communicated with the second chamber. The utility model utilizes the matching of the air inlet pipeline and the air outlet pipeline in the clapboard and the ventilation air duct in the middle beam to form a channel for air circulation, so that the air in the first compartment can flow through the channel and enter the second compartment to form air circulation. In the wind circulation process, heat exchange can be carried out between the airflow and the inner wall of the middle beam, so that condensation and frosting of the middle beam are prevented, and the dew removing effect of the middle beam is effectively improved.

Description

Refrigerator with a door

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator.

Background

With the increasing standard of people's lives, domestic refrigerators play an increasingly important role in people's lives. Refrigerators on the market today usually comprise at least two compartments for storing items to be kept at different temperatures, respectively. The inner containers of the two chambers of the refrigerator are usually connected by adopting a center sill.

Most of the existing refrigerator middle beams are metal plate middle beams which are easy to fix. However, the metal plate middle beam has a large heat conductivity coefficient, and is easily influenced by the low temperature of the inner container of the refrigerator in the using process, so that the temperature of the beam body is low, and the phenomena of condensation and frosting are easily caused on the surface of the middle beam and even on the surface of a refrigerator shell connected with the middle beam.

The existing refrigerator usually adopts a mode of winding a circle of dew removing pipes at a middle beam or heating by a heating wire to remove dew, however, the mode is inconvenient for field installation, and the dew condensation phenomenon is often caused by improper installation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a refrigerator to optimize the structure and dew removing effect of a middle beam of the refrigerator in the related art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to one aspect of the present invention, there is provided a refrigerator including: the box body is internally provided with a first chamber and a second chamber which are arranged at intervals up and down, and the second chamber is arranged at the lower side of the first chamber; the middle beam is arranged on the front side of the box body and is arranged between the first compartment and the second compartment; a ventilation air channel is arranged in the center sill and extends along the length direction of the center sill; the partition plate is arranged in the box body and is arranged between the first chamber and the second chamber; the partition plate is arranged on the back side of the middle beam, and an air inlet pipeline and an air outlet pipeline are embedded in the partition plate; one end of the air inlet pipeline is exposed out of the partition plate and communicated with the first compartment, and the other end of the air inlet pipeline is communicated with one end of the ventilation air duct; the other end of the ventilation air duct is communicated with the air outlet pipeline, and the air outlet pipeline is communicated with the second chamber.

In some embodiments of the present application, the air inlet duct extends in a front-rear direction and is adjacent to one side edge of the partition plate; the front end of the air inlet pipeline is communicated with the ventilation air channel, and the rear end of the air inlet pipeline extends out of the rear end of the partition plate.

Some embodiments of this application, the rear end of intake stack is equipped with the air inlet portion that upwards buckles and extend, the dorsal part of first compartment is equipped with the return air inlet, air inlet portion with the return air inlet is linked together.

Some embodiments of this application, be equipped with the air door in the air inlet portion, be equipped with the fan in the intake stack.

In some embodiments of the present application, the air outlet duct extends in a front-rear direction and is arranged at a left-right interval with the air inlet duct, and the air outlet duct is arranged close to the other side edge of the partition plate; the front end of the air outlet pipeline is communicated with the ventilation air duct, and the rear end of the air outlet pipeline is embedded in the partition plate.

In some embodiments of the present application, the rear end of the air outlet duct is a closed end and is embedded in the partition plate; one or more ventilation holes are formed in the bottom surface of the air outlet pipeline, and the ventilation holes are communicated with the second chamber.

In some embodiments of the present application, one or more communicating pipes are embedded in the partition plate, and the communicating pipes correspond to the vent holes one to one; the top of the communicating pipe is connected with the vent hole, and the bottom of the communicating pipe is communicated with the second chamber.

In some embodiments of the present application, the center sill includes a main body and a front cover; the front side opening of the main body is opened, and the front cover can be detachably covered at the front side opening of the main body; the main part and the front cover enclose to form the ventilation air duct.

In some embodiments of the present application, the main body is integrally formed at the front end of the partition board, and an air inlet is formed at one end of the back side of the main body and an air outlet is formed at the other end of the back side of the main body; the front end of the air inlet pipeline is connected with the air inlet, and the front end of the air outlet pipeline is connected with the air outlet.

In some embodiments of the present application, a first enclosing plate is convexly disposed around a peripheral side of a front port of the air inlet duct, and the first enclosing plate is disposed around a peripheral side of the air inlet duct; the first enclosing plate is detachably attached to the periphery of the back side of the air inlet; a second coaming is convexly arranged on the peripheral side of the front port of the air outlet pipeline and surrounds the peripheral side of the air outlet pipeline; the second enclosing plate is detachably attached to the periphery of the back side of the air outlet.

According to the technical scheme, the utility model has at least the following advantages and positive effects:

in the refrigerator, a partition plate and a middle beam are arranged between a first compartment and a second compartment which are arranged at intervals up and down; the air inlet pipeline and the air outlet pipeline in the partition board are matched with the ventilation air channel in the middle beam to form a channel for air circulation, so that air in the first chamber can flow through the channel and enter the second chamber to form air circulation. In the wind circulation process, heat exchange can be carried out between the airflow and the inner wall of the middle beam, so that condensation and frosting of the middle beam are prevented, and the dew removing effect of the middle beam is effectively improved. In addition, the air inlet pipeline and the air outlet pipeline can be embedded in the partition plate before the partition plate is foamed, so that the step of field installation can be omitted, and the installation efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a schematic view of the structure of the diaphragm and the center sill of fig. 1.

Fig. 3 is a cross-sectional view of fig. 2.

Fig. 4 is a sectional view taken along line a-a in fig. 3.

Fig. 5 is a sectional view taken along line B-B in fig. 3.

Fig. 6 is an exploded view of fig. 2.

Fig. 7 is a schematic view of the air inlet duct, the air outlet duct and the main body of fig. 6.

Fig. 8 is an exploded view of fig. 7.

The reference numerals are explained below: 1. a box body; 11. a first tank liner; 110. a first compartment; 12. a second tank liner; 120. a second compartment; 13. a door body; 2. a partition plate; 21. an air inlet pipeline; 211. an air inlet part; 212. a damper; 213. a first enclosing plate; 22. an air outlet pipeline; 221. a vent hole; 222. a second enclosing plate; 223. closing the plate; 23. a communicating pipe; 3. a middle beam; 30. a ventilation duct; 301. an air inlet; 302. an air outlet; 31. a main body; 32. a front cover.

Detailed Description

Exemplary embodiments that embody features and advantages of the utility model are described in detail below in the specification. It is to be understood that the utility model is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the utility model and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1, a refrigerator according to an embodiment of the present invention mainly includes a refrigerator body 1, a first refrigerator liner 11, a second refrigerator liner 12, a door 13, a partition 2, and a center sill 3.

For convenience of description, unless otherwise specified, the directions of the upper, lower, left, right, front and rear directions in this document are all referred to the state of the refrigerator in use, the door 13 of the refrigerator is front, the opposite direction is rear, and the vertical direction is up and down.

The box body 1 adopts a cuboid hollow structure. It will be appreciated that other shapes of hollow housing structures may be used for the housing 1.

A plurality of mutually separated refrigerating chambers can be arranged in the box body 1, and each separated refrigerating chamber can be used as an independent storage space, such as a freezing chamber, a refrigerating chamber, a temperature changing chamber and the like, so as to meet different refrigerating requirements of freezing, refrigerating, temperature changing and the like according to different food types and store the food. The multiple refrigerating compartments can be arranged in a vertically separated manner or in a horizontally separated manner.

The first container 11 is disposed in the box body 1, a first compartment 110 is formed in the first container 11, and the first compartment 110 serves as a refrigerating compartment. The first compartment 110 may be a freezing compartment or a temperature-variable compartment.

The second tank liner 12 is provided in the tank body 1 and below the first tank liner 11. A second compartment 120 is formed in the second tank container 12, and the first compartment 110 and the second compartment 120 are arranged at intervals up and down. The second compartment 120 serves as a temperature-variable or freezing compartment. The first compartment 110 may be a refrigerating compartment.

It is understood that in other embodiments, a third container may be further disposed in the box body 1, or the internal space of the first container 11 and the second container 12 may be divided into a plurality of refrigeration compartments.

The door body 13 is arranged on the front side of the box body 1 and used for opening and closing the refrigerating chamber. The first tank container 11 and the second tank container 12 have openings on the front sides, that is, the first compartment 110 and the second compartment 120 have openings on the front sides. The door 13 opens and closes front-side openings of the first compartment 110 and the second compartment 120.

The door body 13 and the refrigerator body 1 can be connected through a hinge, so that the door body 13 of the refrigerator can rotate around the axis of the hinge, the door body 13 of the refrigerator is opened and closed, and a corresponding refrigerating chamber is opened and closed. It is understood that a plurality of door bodies 13 may be provided, and are provided corresponding to the refrigeration compartments one by one, that is, the first compartment 110, the second compartment 120, and the like are opened and closed respectively. One door 13 may open and close a plurality of cooling compartments at the same time, that is, the door 13 may open and close the first compartment 110 and the second compartment 120 at the same time.

Fig. 2 is a schematic structural view of the diaphragm 2 and the center sill 3 in fig. 1.

Referring to fig. 1 and 2, the partition plate 2 is disposed in the box body 1 and between the first tank container 11 and the second tank container 12, that is, the partition plate 2 is disposed between the first compartment 110 and the second compartment 120. The partition 2 may be used to support the first tank 11 and to space the first compartment 110 and the second compartment 120 up and down.

It should be noted that, in some other embodiments, the partition board 2 may also be disposed in the first tank container 11 or the second tank container 12, so as to divide the internal space of the first tank container 11 or the second tank container 12 into two refrigeration compartments arranged up and down.

The partition board 2 is filled with a foaming material, and the foaming material is filled in the internal space of the partition board 2, so that the partition board 2 has the functions of heat preservation and heat insulation, and further the function of heat insulation is realized between the first tank liner 11 and the second tank liner 12 or between the first compartment 110 and the second compartment 120.

Fig. 3 is a cross-sectional view of fig. 2.

Referring to fig. 1 to 3, the middle beam 3 is disposed at the front side of the box body 1 and between the first box container 11 and the second box container 12, that is, the middle beam 3 is disposed between the first compartment 110 and the second compartment 120. The bottom border of the front side of the first tank container 11 is connected with the top of the center sill 3, the top border of the front side of the second tank container 12 is connected with the bottom of the center sill 3, namely, the front side openings of the first tank container 11 and the second tank container 12 are connected through the center sill 3, so that the front side positions of the first tank container 11 and the second tank container 12 are fixed through the center sill 3.

The center sill 3 is usually made of metal, such as a sheet metal part, and the heat conductivity coefficient of the metal is large. First case courage 11 and second case courage 12 low temperature conduct easily give well roof beam 3, consequently, receive the microthermal influence of first case courage 11 and second case courage 12 easily in the use to make well roof beam 3 temperature lower, and then cause the phenomenon of well roof beam 3 surface, even the box 1 surface of being connected with it to produce condensation, frosting easily.

Fig. 4 is a sectional view taken along line a-a in fig. 3. Fig. 5 is a sectional view taken along line B-B in fig. 3.

Referring to fig. 3 to 5, the center sill 3 is hollow, and a ventilation duct 30 is disposed in the center sill, and the ventilation duct 30 extends along the length direction of the center sill 3. The one end in ventilation air duct 30 in well roof beam 3 is equipped with air intake 301, the other end in ventilation air duct 30 in well roof beam 3 is equipped with air outlet 302, and then make wind flow in ventilation air duct 30, from the one end flow direction other end of ventilation air duct 30, make wind can flow through the inner space of well roof beam 3 along the length direction of well roof beam 3, and form the air current, utilize the air current to carry out the heat transfer with the inner wall of well roof beam 3, thereby can prevent the production of condensation, frosting.

Referring to fig. 3 to 5, an air inlet duct 21 and an air outlet duct 22 are disposed in the partition board 2 at an interval. Wherein, the air inlet duct 21 and the air outlet duct 22 are both embedded in the inner space of the partition board 2.

The front end of the air inlet duct 21 is exposed to the partition plate 2 and is communicated with the first compartment 110. The other end of the air inlet duct 21 is communicated with the ventilation air duct 30 in the middle beam 3, namely is connected with an air inlet 301 of the ventilation air duct 30.

In some embodiments, the air inlet duct 21 extends in a front-to-rear direction and is adjacent to one side edge of the partition 2. The front end of the air inlet duct 21 communicates with the air inlet 301 of the ventilation air duct 30, and the rear end of the air inlet duct 21 extends out of the rear end of the partition plate 2 to communicate with the first compartment 110 from the back side of the first compartment 110. It should be noted that, in other embodiments, the air inlet duct 21 may not extend in the front-rear direction.

Referring to fig. 2 and 4, in some embodiments, the rear end of the air inlet duct 21 is provided with an air inlet portion 211 extending upward in a bent manner, and the air inlet portion 211 extends out of the rear end surface of the partition board 2. Meanwhile, a return air inlet (not shown) is formed in the back side of the first compartment 110, and the air inlet 211 is communicated with the return air inlet through a duct, so that air in the first compartment 110 can enter the air inlet duct 21, and further air can enter the ventilation air duct 30 for defrosting.

In some embodiments, the air inlet portion 211 is provided with an air door 212, and the air door 212 can be rotated by a motor to open and close the air inlet duct 21, so as to open and close the ventilation duct 30 in the center sill 3, thereby controlling the defrosting function of the center sill 3. It will be appreciated that in other embodiments, the damper 212 may be located elsewhere in the air inlet duct 21.

In some embodiments, a fan (not shown) is disposed in the air inlet duct 21 adjacent to the damper 212, and is used to provide wind force to move air in the first compartment 110 into the air inlet duct 21 and into the ventilation air duct 30 in the center sill 3. It will be appreciated that the fan may be located elsewhere on the air inlet duct 21.

Referring to fig. 3 and 5, one end of the air outlet duct 22 is communicated with the other end of the ventilation air duct 30, that is, one end of the air outlet duct 22 is communicated with the air outlet 302 of the ventilation air duct 30. Meanwhile, the air-out duct 22 communicates with the second compartment 120.

The air in the first compartment 110 can enter the ventilation air duct 30 through the air inlet duct 21, and the air in the ventilation air duct 30 flows to the air outlet duct 22 through the air outlet 302 and flows into the second compartment 120 for air circulation. In the air current circulation process, the air current exchanges heat with the inner wall of the center sill 3, so that the condensation and frosting of the center sill 3 can be prevented.

In some embodiments, the air outlet duct 22 extends in the front-rear direction and is spaced from the air inlet duct 21 in the left-right direction, and the air outlet duct 22 is disposed near the other side edge of the partition plate 2. The front end of the air outlet duct 22 is communicated with the air outlet 302 of the ventilation air duct 30, and the rear end of the air outlet duct 22 is a closed end and is embedded in the inner space of the partition board 2.

In some embodiments, one or more ventilation holes 221 are formed in the bottom surface of the air-out duct 22, the ventilation holes 221 are arranged at intervals, each ventilation hole 221 is communicated with the second compartment 120, and thus the airflow entering the air-out duct 22 in the ventilation air duct 30 can flow into the second compartment 120 through the ventilation holes 221.

In some embodiments, there is a space between the bottom surface of the air outlet duct 22 and the bottom surface of the partition board 2, and one or more communicating pipes 23 are disposed inside the partition board 2, and the communicating pipes 23 are vertically arranged and correspond to the ventilation holes 221 one by one. The communicating pipe 23 is arranged between the bottom surface of the air outlet pipeline 22 and the bottom surface of the partition board 2, the top of the communicating pipe 23 is connected with the vent hole 221, and the bottom of the communicating pipe 23 is communicated with the second compartment 120. The communicating pipe 23 is buried in the foamed layer, thereby reducing the influence of the air flow on the heat insulating effect of the partition plate 2.

Fig. 6 is an exploded view of fig. 2.

Referring to fig. 6, in some embodiments, the center sill 3 includes a main body 31 and a front cover 32. The main body 31 is hollow and the front side of the main body 31 is open, and the ventilation air duct 30 is formed in the main body 31. The front cover 32 detachably covers the front opening of the main body 31 and serves as a front appearance surface of the center sill 3. When the front cover 32 covers the front opening of the main body 31, the main body 31 and the front cover 32 enclose to form the ventilation air duct 30.

In some embodiments, the main body 31 is integrally formed at the front end of the partition 2, so that the main body 31 can be installed in the cabinet 1 together with the partition 2, and the front cover 32 covers the front side of the main body 31.

Fig. 7 is a schematic structural view of the air inlet duct 21, the air outlet duct 22 and the main body 31 in fig. 6. Fig. 8 is an exploded view of fig. 7.

Referring to fig. 6 to 8, in some embodiments, the air inlet 301 of the ventilation air duct 30 is disposed at one end of the back side of the main body 31, and the air outlet 302 of the ventilation air duct 30 is disposed at the other end of the back side of the main body 31. The front end of the air inlet duct 21 is connected to the air inlet 301 on the back side of the main body 31, and the front end of the air outlet duct 22 is connected to the air outlet 302 on the back side of the main body 31, so that the air flow in the air inlet duct 21 can enter the ventilation air duct 30 through the air inlet 301, leave the ventilation air duct 30 through the air outlet 302, and then enter the air outlet duct 22.

Referring to fig. 7 and 8, in some embodiments, a first enclosing plate 213 is protruded from the peripheral side of the front end of the air inlet duct 21, and the first enclosing plate 213 is disposed around the peripheral side of the air inlet duct 21 and is used to be attached and fixed to the back side of the main body 31. The front end of the air inlet duct 21 is detachably attached to the periphery of the back side of the air inlet 301 through the first enclosing plate 213, so that the front end of the air inlet duct 21 is communicated with the air inlet 301 of the ventilation air duct 30.

Similarly, a second enclosing plate 222 is convexly arranged on the peripheral side of the front end opening of the air outlet pipeline 22, and the second enclosing plate 222 is arranged around the peripheral side of the air outlet pipeline 22 and is used for being attached and fixed on the back side of the main body 31. The front end of the air-out duct 22 is detachably attached to the periphery of the back side of the air outlet 302 through the second enclosing plate 222, so that the front end of the air-out duct 22 is communicated with the air outlet 302 of the ventilation air duct 30.

Referring to fig. 7 and 8, in some embodiments, a sealing plate 223 is disposed at the rear end of the air outlet duct 22. The closing plate 223 is sealed at the rear end of the air outlet duct 22, so that the rear end of the air outlet duct 22 is closed, and the air flow in the air outlet duct 22 is forced to enter the second compartment 120 only through the ventilation hole 221. It will be appreciated that the closure plate 223 may be integrally formed at the rear end of the outlet duct 22 or may be removably disposed at the rear end of the outlet duct 22.

Based on the technical scheme, the utility model at least has the following advantages and positive effects:

in the refrigerator of the utility model, a clapboard 2 and a middle beam 3 are arranged between a first refrigerator liner 11 and a second refrigerator liner 12 which are arranged at intervals up and down; the air inlet duct 21 and the air outlet duct 22 in the partition board 2 are matched with the ventilation air duct 30 in the middle beam 3 to form a passage for air circulation, so that the wind in the first compartment 110 can flow through the passage and enter the second compartment 120 to form wind circulation. In the wind circulation process, heat exchange can be carried out through the inner wall of the air flow and the middle beam 3, so that the condensation and frosting of the middle beam 3 are prevented, and the dew removing effect of the middle beam 3 is effectively improved. In addition, the air inlet pipeline 21 and the air outlet pipeline 22 can be embedded in the partition board 2 before the partition board 2 is foamed, so that the step of field installation can be omitted, and the installation efficiency is improved.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A refrigerator, characterized by comprising:

the box body is internally provided with a first chamber and a second chamber which are arranged at intervals up and down, and the second chamber is arranged at the lower side of the first chamber;

the middle beam is arranged on the front side of the box body and is arranged between the first compartment and the second compartment; a ventilation air channel is arranged in the middle beam and extends along the length direction of the middle beam;

the partition plate is arranged in the box body and is arranged between the first chamber and the second chamber; the partition plate is arranged on the back side of the middle beam, and an air inlet pipeline and an air outlet pipeline are embedded in the partition plate;

one end of the air inlet pipeline is exposed out of the partition plate and communicated with the first compartment, and the other end of the air inlet pipeline is communicated with one end of the ventilation air channel; the other end of the ventilation air duct is communicated with the air outlet pipeline, and the air outlet pipeline is communicated with the second chamber.

2. The refrigerator as claimed in claim 1, wherein the air inlet duct extends in a front-rear direction and is adjacent to one side edge of the partition;

the front end of the air inlet pipeline is communicated with the ventilation air channel, and the rear end of the air inlet pipeline extends out of the rear end of the partition plate.

3. The refrigerator as claimed in claim 2, wherein an air inlet portion bent and extended upward is provided at a rear end of the air inlet duct, and a return air opening is provided at a rear side of the first compartment, the air inlet portion being communicated with the return air opening.

4. The refrigerator as claimed in claim 3, wherein a damper is provided in the air inlet portion, and a blower fan is provided in the air inlet duct.

5. The refrigerator as claimed in claim 2, wherein the air outlet duct extends in a front-rear direction and is spaced from the air inlet duct in a left-right direction, and the air outlet duct is disposed adjacent to the other side edge of the partition plate;

the front end of the air outlet pipeline is communicated with the ventilation air duct, and the rear end of the air outlet pipeline is embedded in the partition plate.

6. The refrigerator as claimed in claim 5, wherein the rear end of the air outlet duct is a closed end and is embedded in the partition plate; one or more ventilation holes are formed in the bottom surface of the air outlet pipeline, and the ventilation holes are communicated with the second chamber.

7. The refrigerator according to claim 6, wherein one or more communication pipes are buried in the partition plate, the communication pipes corresponding to the vents one to one; the top of the communicating pipe is connected with the vent hole, and the bottom of the communicating pipe is communicated with the second chamber.

8. The refrigerator of claim 1, wherein the center sill includes a main body and a front cover; the front side opening of the main body is opened, and the front cover is detachably covered at the front side opening of the main body;

the main part and the front cover enclose to form the ventilation air duct.

9. The refrigerator as claimed in claim 8, wherein the main body is integrally formed at a front end of the partition plate, and an air inlet is formed at one end of a back side of the main body and an air outlet is formed at the other end thereof;

the front end of the air inlet pipeline is connected with the air inlet, and the front end of the air outlet pipeline is connected with the air outlet.

10. The refrigerator according to claim 9 wherein a first baffle is provided convexly around the peripheral side of the front end opening of the air inlet duct, the first baffle being disposed around the peripheral side of the air inlet duct; the first enclosing plate is detachably attached to the periphery of the back side of the air inlet;

a second coaming is convexly arranged on the peripheral side of the front port of the air outlet pipeline and surrounds the peripheral side of the air outlet pipeline; the second enclosing plate is detachably attached to the periphery of the back side of the air outlet.