WO2024067234A1

WO2024067234A1 - Refrigerator

Info

Publication number: WO2024067234A1
Application number: PCT/CN2023/119615
Authority: WO
Inventors: 王春利; 陈建全; 李康; 吕福顺; 崔展鹏
Original assignee: 青岛海尔特种制冷电器有限公司; 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2022-09-30
Filing date: 2023-09-19
Publication date: 2024-04-04
Also published as: CN117804138A

Abstract

A refrigerator, which comprises: a box body, within which a first storage chamber and a second storage chamber are defined, and a first cooling chamber and a second cooling chamber are respectively located below and adjacent to the first storage chamber and the second storage chamber; and a first evaporator and a second evaporator, which are respectively arranged in the first cooling chamber and the second cooling chamber. The first storage chamber communicates with the first cooling chamber by means of a first air supply port located on a rear side of the first storage chamber and a first air return port located in the front side of the bottom of the box body, so that a cooling airflow is allowed to flow into the first storage chamber via the first air supply port, and a return airflow is allowed to flow into the first cooling chamber flow via the first air return port; the second storage chamber communicates with the second cooling chamber through a second air supply port located on a rear side of the second storage chamber and a second air return port located on a front side of the bottom of the box body, so that a cooling airflow is allowed to flow into the second storage chamber via the second air supply port, and a return airflow is allowed to flow into the second cooling chamber via the second air return port.

Description

refrigerator

Technical Field

The invention relates to refrigeration and freezing technology, in particular to a refrigerator.

Background technique

In daily life, people mainly use refrigerators to refrigerate and store food. The evaporator and air duct of existing T-type refrigerators are mostly located at the back. The fan rotates to send the air flowing through the evaporator out from the air supply port. After cooling the items inside the refrigerator, it returns to the evaporator through the return air port. The air supply port and the return air port are both located at the back, forming a small air circulation range. The air sent out from the air supply port forms turbulence and blows directly on the items inside the refrigerator, causing uneven cooling inside the refrigerator, which is not conducive to cooling and preservation. This problem is more obvious in the freezer and variable temperature room, because the air outlet temperature of the freezer and variable temperature room is lower than that of the cold storage room, and the adverse effects of this direct blowing of the air port are more obvious on the stored food.

Summary of the invention

The object of the present invention is to provide a refrigerator with double bottom-mounted evaporators and a more uniform temperature reduction in the storage compartment.

A further object of the present invention is to avoid frost blockage at the return air outlet.

To achieve the above object, the present invention provides a refrigerator, comprising:

A box body, wherein a first storage compartment and a second storage compartment are defined, which are spaced apart and arranged side by side in a transverse direction of the box body, and a first cooling compartment and a second cooling compartment are spaced apart and arranged side by side in a transverse direction of the box body, wherein the first cooling compartment and the second cooling compartment are adjacently located below the first storage compartment and the second storage compartment, respectively;

The first evaporator and the second evaporator are respectively disposed in the first cooling chamber and the second cooling chamber, and are configured to provide cooling capacity for the first storage compartment and the second storage compartment respectively;

The first storage room is communicated with the first cooling room through a first air supply port located at the rear side of the first storage room and a first air return port located at the front side of the bottom of the box body, so as to allow cooling air in the first cooling room to flow into the first storage room through the first air supply port, and to allow return air in the first storage room to flow into the first cooling room through the first return air port; the second storage room is communicated with the second cooling room through a second air supply port located at the rear side of the second storage room and a second air return port located at the front side of the bottom of the box body, so as to allow cooling air in the second cooling room to flow into the second storage room through the second air supply port, and to allow return air in the second storage room to flow into the second cooling room through the second return air port.

Furthermore, the box body also defines a third storage compartment located above the first storage compartment and the second storage compartment, and a third cooling compartment located at the rear side of the third storage compartment; and the refrigerator also includes a third evaporator arranged in the third cooling compartment, and the third evaporator is configured to provide cooling for the third storage compartment.

Further, the first storage compartment and the first cooling compartment are separated by a first cover plate, and the second storage compartment and the second cooling compartment are separated by a second cover plate; the first cover plate and the second cover plate each include a A horizontal section and a vertical section extending forward and obliquely from top to bottom from the front end of the horizontal section; the first cooling chamber is located on the rear side of the vertical section of the first cover plate, and the first return air outlet includes a first rear return air outlet opened on the vertical section of the first cover plate; the second cooling chamber is located on the rear side of the vertical section of the second cover plate, and the second return air outlet includes a second rear return air outlet opened on the vertical section of the second cover plate.

Furthermore, the refrigerator further comprises:

a first return air cover, disposed at the front side of the first cover plate, and comprising a first transverse cover plate extending from the rear to the front from the transverse section of the first cover plate and a first vertical cover plate extending downward from the front end of the first transverse cover plate; and

The second return air cover is arranged at the front side of the second cover plate, and comprises a second transverse cover plate extending from the rear to the front of the transverse section of the second cover plate and a second vertical cover plate extending downward from the front end of the second transverse cover plate; wherein

The first return air outlet also includes a first front return air outlet opened on the first vertical cover plate, and the second return air outlet also includes a second front return air outlet opened on the second vertical cover plate.

Furthermore, the number of the first front return air outlets and the second front return air outlets are both multiple, and the multiple first front return air outlets are arranged at intervals in the up-down direction, and the multiple second front return air outlets are arranged at intervals in the up-down direction; each of the first front return air outlets and each of the second front return air outlets are laterally extending strip air outlets; the number of the first rear return air outlets and the second rear return air outlets are both multiple, and the multiple first rear return air outlets are arranged at intervals in the laterally, and the multiple second rear return air outlets are arranged at intervals in the laterally, and each of the first rear return air outlets and each of the second rear return air outlets are vertically extending strip air outlets.

Furthermore, the front sides of the vertical sections of the first cover plate and the second cover plate are both provided with forward-protruding guide ribs; and the guide ribs extend obliquely or bend downward from the lateral middle of the vertical section where they are located to the lateral sides of the vertical section.

Further, the box body is also defined with a compressor compartment located at the bottom thereof;

The refrigerator further comprises:

A compressor and a heat dissipation fan are arranged in the compressor compartment;

An air duct assembly, used for installing the heat dissipation fan, the air duct assembly extending along the depth direction of the box body to divide the space in the compressor compartment into two sub-spaces arranged side by side in a transverse direction, and the compressor is located in one of the sub-spaces;

A first drain pipe and a second drain pipe respectively extend from the first cooling chamber and the second cooling chamber to two sub-spaces of the compressor compartment; and

an evaporating dish, disposed in the compressor compartment, and having a first accommodating area for receiving condensed water discharged from the first drain pipe, a second accommodating area for receiving condensed water discharged from the second drain pipe, and a connecting flow channel connecting the first accommodating area and the second accommodating area; and

The connecting flow channel is arranged in the wind tube assembly.

Furthermore, the second accommodating area and the connecting flow channel have a vertical height higher than the first accommodating area, so that after the evaporating dish is installed on the bottom plate of the refrigerator, the second accommodating area and the connecting flow channel are both suspended above the bottom plate; and the bottom wall of the second accommodating area extends obliquely downward in a direction from the second accommodating area to the first accommodating area.

Furthermore, the wind tube assembly is provided with an avoidance gap, and the connecting flow channel is arranged in the avoidance gap;

A downwardly protruding support seat is provided on the outer side of the bottom of the connecting flow channel, the support seat is supported on the bottom plate, and the support seat is configured to block the flow surface of the avoidance gap located below the connecting flow channel.

Furthermore, a first water receiving tray is formed at the bottom of the first cooling chamber, and the first water receiving tray is formed by a plurality of first inclined portions, the bottoms of the plurality of first inclined portions intersect, and a first drain outlet is provided at the intersection; a second water receiving tray is formed at the bottom of the second cooling chamber, and the second water receiving tray is formed by a plurality of second inclined portions, the bottoms of the plurality of second inclined portions intersect, and a second drain outlet is provided at the intersection.

The beneficial effects of the present invention are:

The refrigerator of the present invention comprises two bottom-mounted cooling chambers, each of which is provided with an evaporator for providing cold air to the storage compartment above the cooling chamber, that is, the refrigerator has two bottom-mounted evaporators, which can increase the storage compartment volume of the refrigerator with a larger width as much as possible. In addition, each storage compartment is connected to the cooling chamber below it through the air supply port at the rear side of the storage compartment and the return air port at the front side of the bottom of the box body. Thus, the cooling airflow in the cooling chamber can be blown forward into the storage compartment through the air supply port, and the cooling airflow naturally sinks from top to bottom and from front to back in the storage compartment. The airflow flowing through almost the entire storage compartment forms a return airflow at the front side of the bottom of the storage compartment, and returns to the cooling chamber through the return air port at the front side of the bottom of the box body. It can be seen that the cooling airflow sent out through the air supply port of the present invention is approximately parallel flow, avoiding direct blowing of the air port, thereby making the cooling of the storage compartment more uniform.

Furthermore, the present invention sets the shape of the rear return air outlet opened on the cover plate to a strip air outlet extending vertically, which is conducive to the condensed water flowing downward along the edge of the strip air outlet, thereby increasing the speed at which the condensed water flows downward. In addition, the front side of the vertical section of the cover plate is provided with a forward-protruding guide rib, which extends downward from the middle to both sides in an inclined manner or curved downward. When the condensed water encounters the guide rib, it can flow along the guide rib to the lateral sides of the vertical section, and then flow to the bottom wall of the inner tank, thereby timely avoiding the problem of condensed water flowing down from the top of the cover plate adhering to the rear return air outlet to cause ice or frost. In addition, the upper and lower parts of the guide rib have return air flow passing through, which can prevent the occurrence of local large-area frost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

FIG2 is a partial structural exploded view of a refrigerator according to an embodiment of the present invention;

Fig. 3 is a schematic cross-sectional view taken along the cutting line A-A in Fig. 1;

FIG4 is a schematic cross-sectional view taken along the section line BB in FIG1 ;

FIG5 is a partial structural exploded view of a refrigerator according to an embodiment of the present invention;

FIG6 is a schematic structural diagram of a first liner and a second liner according to an embodiment of the present invention;

7 is a schematic structural diagram of an assembled wind tube assembly and an evaporation dish according to an embodiment of the present invention;

FIG. 8 is a schematic structural exploded view of a wind cylinder assembly and an evaporation dish according to an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

The present invention first provides a refrigerator, FIG1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, FIG2 is a partial structural exploded diagram of a refrigerator according to an embodiment of the present invention, FIG3 is a schematic cross-sectional view taken along the cutting line A-A in 1, and FIG4 is a schematic cross-sectional view taken along the cutting line B-B in 1. Referring to FIG1 to FIG4, the refrigerator 1 of the present invention includes a box body 10, a first evaporator 21 and a second evaporator 22.

The box body 10 defines a first storage room 111 and a second storage room 121 which are spaced apart and arranged side by side in the transverse direction of the box body 10, and a first cooling room 112 and a second cooling room 122 which are spaced apart and arranged side by side in the transverse direction of the box body 10. The first cooling room 112 and the second cooling room 122 are respectively and adjacently located below the first storage room 111 and the second storage room 121. In other words, the first cooling room 112 and the second cooling room 122 are both cooling rooms placed at the bottom of the box body 10.

The first evaporator 21 and the second evaporator 22 are respectively disposed in the first cooling chamber 112 and the second cooling chamber 122, and are configured to respectively provide cooling for the first storage compartment 111 and the second storage compartment 121. In other words, the first evaporator 21 and the second evaporator 22 are both evaporators disposed at the bottom of the cabinet 10.

The first storage compartment 111 is connected to the first cooling compartment 112 through the first air supply port 711 located at the rear side of the first storage compartment 111 and the first air return port located at the bottom front side of the cabinet 10, so as to allow the cooling airflow in the first cooling compartment 112 to flow into the first storage compartment 111 through the first air supply port 711, and allow the return airflow in the first storage compartment 111 to flow into the first cooling compartment 112 through the first return air port. Similarly, the second storage compartment 121 is connected to the second cooling compartment 122 through the second air supply port located at the rear side of the second storage compartment 121 and the second air return port located at the bottom front side of the cabinet 10, so as to allow the cooling airflow in the second cooling compartment 122 to flow into the second storage compartment 121 through the second air supply port, and allow the return airflow in the second storage compartment 121 to flow into the second cooling compartment 122 through the second return air port.

The refrigerator of the present invention comprises two bottom-mounted cooling chambers, each of which is provided with an evaporator for providing cold air to the storage compartment above the cooling chamber, that is, the refrigerator has two bottom-mounted evaporators, which can increase the storage compartment volume of the refrigerator with a larger width as much as possible. In addition, each storage compartment is connected to the cooling chamber below it through the air supply port at the rear side of the storage compartment and the return air port at the front side of the bottom of the box body. Thus, the cooling airflow in the cooling chamber can be blown forward into the corresponding storage compartment through the air supply port, and the cooling airflow naturally sinks from top to bottom and from front to back in the storage compartment. The airflow flowing through almost the entire storage compartment forms a return airflow at the front side of the bottom of the storage compartment, and returns to the cooling chamber through the return air port at the front side of the bottom of the box body. It can be seen that the cooling airflow sent out through the air supply port of the present invention is approximately parallel flow, avoiding direct blowing of the air port, so that the cooling of the storage compartment is more uniform.

Specifically, the first storage compartment 111 and the first cooling compartment 112 may be defined inside the first inner container 11 and are located at The second storage compartment 121 and the second cooling compartment 122 may be defined inside the second inner liner 12 and are located at the upper and lower parts of the second inner liner 12, respectively. The first inner liner 11 and the second inner liner 12 are independent of each other, so the first storage compartment 111 and the second storage compartment 121 are independent of each other, and the first cooling compartment 112 and the second cooling compartment 122 are independent of each other.

Specifically, a first air duct assembly 71 is provided at the rear side of the first storage compartment 111, a first air supply duct communicating with the first cooling compartment 112 is defined inside the first air duct assembly, and a first air supply port 711 is opened at the front side of the first air duct assembly 71. A second air duct assembly 72 is provided at the rear side of the second storage compartment 121, a second air supply duct communicating with the second cooling compartment 122 is defined inside the second air duct assembly 72, and a second air supply port 721 is opened at the front side of the second air duct assembly 72.

Furthermore, the electric control terminals and refrigerant connectors associated with the first storage compartment 11 are respectively located on both lateral sides of the first air duct assembly 71 , and the electric control terminals and refrigerant connectors associated with the second storage compartment 12 are respectively located on both lateral sides of the second air duct assembly 72 .

Specifically, the first evaporator 21 and the second evaporator 22 are both tilted upward from front to back. The first cooling chamber 112 is further provided with a first air supply fan 23 located at the rear side of the first evaporator 21 , and the second cooling chamber 122 is further provided with a second air supply fan 24 located at the rear side of the second evaporator 22 .

In some embodiments, the cabinet 10 further defines a third storage compartment 171 located above the first storage compartment 111 and the second storage compartment 121, and a third cooling compartment 172 located behind the third storage compartment 171. The refrigerator 1 further includes a third evaporator 25 disposed in the third cooling compartment 172, and the third evaporator 25 is configured to provide cooling for the third storage compartment 171.

Specifically, the first storage compartment 111 and the second storage compartment 121 can be a freezing compartment and a variable temperature compartment, respectively. Specifically, the temperature of the first storage compartment 111 is usually between -24°C and -14°C, and the temperature of the second storage compartment 111 can be adjusted to between -24°C and 8°C. The third storage compartment 171 can be a refrigerated compartment, and the temperature therein is usually between 2°C and 10°C.

In some embodiments, the first storage compartment 111 and the first cooling compartment 112 are separated by a first cover plate 31, and the second storage compartment 121 and the second cooling compartment 122 are separated by a second cover plate 32. Referring to the partial structural exploded view of a refrigerator according to one embodiment of the present invention shown in FIG5, the first cover plate 31 includes a transverse section 311 extending from the back to the front and a vertical section 312 extending forward from the front end of the transverse section 311 in an inclined manner from top to bottom. The second cover plate 32 includes a transverse section 321 extending from the back to the front and a vertical section 322 extending forward from the front end of the transverse section 321 in an inclined manner from top to bottom. The first cooling compartment 112 is located at the rear side of the vertical section 312 of the first cover plate 31, and the first return air port includes a first rear return air port 3121 opened on the vertical section of the first cover plate 31. The second cooling chamber 122 is located at the rear side of the vertical section 322 of the second cover plate 32, and the second return air outlet includes a second rear return air outlet 3221 opened on the vertical section 322 of the second cover plate 32. As a result, the condensed water of the first rear return air outlet 3121 flows to the bottom of the first cooling chamber 112 along the vertical section 312 in a timely manner under the action of its own gravity, and finally flows to the water receiving tray or other water collecting structure at the bottom of the first cooling chamber 112; the condensed water at the second rear return air outlet 3221 flows to the bottom of the second cooling chamber 122 along the vertical section 322 in a timely manner under the action of its own gravity, and finally flows to the water receiving tray or other water collecting structure at the bottom of the second cooling chamber 122. Therefore, it is not easy for condensed water to gather at the first rear return air outlet 3121 and the second rear return air outlet 3221 to produce ice or frost.

Existing refrigerators with bottom-mounted evaporators and bottom-mounted cooling chambers also use a cover to separate the cooling chamber from the storage chamber. However, the cover in the prior art only has a horizontal section, but no vertical section. A return air hood must be set on the front side of the cover to isolate the cooling chamber from the user's sight. When condensed water is generated in the storage chamber, the condensed water drips onto the cover or the return air hood. The condensed water dripping onto the cover drips into the cooling chamber from the assembly gap between the cover and the return air hood, and it is easy to drip onto the evaporator, causing severe frost on the evaporator; the condensed water dripping onto the return air hood directly flows out of the box, affecting the user's experience.

The cover plate of the present invention has both a transverse section and a vertical section, which is equivalent to the transverse section and the vertical section being a smoothly connected integral part, which is beneficial for the condensed water dripping in the storage room above the transverse section to flow directly to the bottom wall of the cooling chamber along the inclined vertical section, without flowing out of the box body 10 to affect the user experience or dripping on the evaporator to cause serious frosting of the evaporator.

Furthermore, the number of the first rear return air outlet 3121 and the number of the second rear return air outlet 3221 are both multiple, the multiple first rear return air outlets 3121 are arranged at intervals in the horizontal direction, and the multiple second rear return air outlets 3221 are arranged at intervals in the horizontal direction, and each first rear return air outlet 3121 and each second rear return air outlet 3221 are vertically extending strip-shaped air outlets. In other words, the first grid bars 3122 used to separate two adjacent first rear return air outlets 3121 are all extended vertically, which is consistent with the flow trend of condensed water on the vertical section 312; the second grid bars 3222 used to separate two adjacent second rear return air outlets 3221 are all extended vertically, which is consistent with the flow trend of condensed water on the vertical section 322. Therefore, condensed water will hardly stay on the first grid bar 3122 and the second grid bar 3222, which is conducive to the condensed water flowing downward along the first grid bar 3122 and the second grid bar 3222 faster, increasing the speed of the condensed water flowing down, and more effectively avoiding the accumulation of condensed water at the first rear return air outlet 3121 and the second rear return air outlet 3221 to form ice or frost.

Specifically, the width of the first rear air return port 3121 and the second rear air return port 3221 is preferably less than 5 mm to prevent child users from inserting their fingers therein.

In some embodiments, the refrigerator 1 further includes a first return air hood 41 and a second return air hood 42. The first return air hood 41 is disposed on the front side of the first cover plate 31, and includes a first transverse cover plate 411 extending from the rear to the front from the transverse section 311 of the first cover plate 31, and a first vertical cover plate 412 extending downward from the front end of the first transverse cover plate 411. The second return air hood 42 is disposed on the front side of the second cover plate 32, and includes a second transverse cover plate 421 extending from the rear to the front from the transverse section 321 of the second cover plate 32, and a second vertical cover plate 422 extending downward from the front end of the second transverse cover plate 421. The first return air outlet also includes a first front return air outlet 4121 opened on the first vertical cover plate 412, and the second return air outlet also includes a second front return air outlet 4221 opened on the second vertical cover plate 422. That is to say, the return air flow in the first storage compartment 111 flows into the first cooling compartment 112 through the first front return air outlet 4121 and the first rear return air outlet 3121 in sequence; the return air flow in the second storage compartment 121 flows into the second cooling compartment 122 through the second front return air outlet 4221 and the second rear return air outlet 3221 in sequence.

Further, the first vertical cover plate 412 is spaced apart from the vertical section 312 of the first cover plate 31 to define a first return air space 51 between the first return air hood 41, the vertical section 312 of the first cover plate 31, and the bottom wall and two lateral side walls of the first liner 11. The second vertical cover plate 422 is spaced apart from the vertical section 322 of the second cover plate 32 to define a second return air space 52 between the second return air hood 42, the vertical section 322 of the second cover plate 32, and the bottom wall and two lateral side walls of the second liner 12.

It is understandable that the return airflow from the first storage compartment 111 to the first cooling compartment 112 and the airflow from the second storage compartment 121 to the second cooling compartment 122 must undergo a reversing process. The first return air space 51 and the second return air space 52 provide a buffer space for the reversing and steady flow of the return airflow, with a small flow resistance. The return airflow flows through the return air space with a small flow resistance before flowing to the cooling compartment, avoiding a significant impact of the reversal on the return airflow velocity. In addition, the moisture in the return airflow can also be condensed in advance at the front return air outlet, the return air space and the rear return air outlet, reducing the moisture condensed on the evaporator, thereby alleviating the frosting of the evaporator.

It is understandable that, for a refrigerator 1 with a smaller size in the depth direction, the cover plate can be used directly to separate the storage compartment and the cooling compartment, and connect the two through the return air port, without the need to set up a return air hood. For a refrigerator 1 with a larger size in the depth direction, it is also necessary to set up a return air hood on the front side of the cover plate, which can also meet the purpose of isolating the storage compartment 111 and the cooling compartment 112, and connecting the two through the return air port. It can be seen that the cover plate of the present invention has strong versatility, is suitable for refrigerators of different sizes, and saves mold costs.

Moreover, the present invention provides an air return hood on the front side of the cover plate, which can also play a decorative role and unify the front appearance of the first storage compartment 111 and the second storage compartment 121. In this way, even if the structures of the first cover plate 31 and the second cover plate 32 are different, or the depths of the first cooling chamber 112 and the second cooling chamber 122 are different due to the sizes of the first evaporator 21 and the second evaporator 22 or other reasons, it can still be ensured that the first storage compartment 111 and the second storage compartment 121 have a consistent front appearance.

Furthermore, the number of the first front air return vents 4121 and the second front air return vents 4221 are both multiple, and the multiple first front air return vents 4121 are arranged at intervals in the vertical direction, and the multiple second front air return vents 4221 are arranged at intervals in the vertical direction. Each first front air return vent 4121 and each second front air return vent 4221 are strip vents extending laterally.

In some embodiments, a first guide rib 3123 protruding forward is provided on the front side of the vertical section 312 of the first cover plate 31, and a second guide rib 3223 protruding forward is provided on the front side of the vertical section 322 of the second cover plate 32. The first guide rib 3123 extends obliquely downward or bends downward from the lateral middle of the vertical section 312 where it is located to the lateral sides of the vertical section 312; the second guide rib 3223 extends obliquely downward or bends downward from the lateral middle of the vertical section 322 where it is located to the lateral sides of the vertical section 322.

When the condensed water flowing from top to bottom on the vertical section 312 encounters the first guide rib 3123, it can flow along the first guide rib 3123 to the lateral sides of the vertical section 312, and then flow to the bottom wall of the first inner tank 11. This part of the condensed water will not flow through the area of the first rear return air outlet 3121 below the first guide rib 3123, thereby reducing the amount of condensed water attached to the first rear return air outlet 3121, thereby reducing the amount of ice or frost generated at the first rear return air outlet 3121, and even avoiding the problem of ice or frost generated at the first rear return air outlet 3121. Furthermore, the first guide rib 3123 extends downward from the middle to both sides, which is not only conducive to the rapid flow of condensed water, but also ensures that at least most sections of the first guide rib 3123 are located above and below the airflow path of the first rear return air outlet 3121, that is, it ensures that at least most sections of the first guide rib 3123 have return air flow passing above and below, preventing local large-area frost from forming at the first guide rib 3123. Similarly, it can also prevent ice or frost from forming at the second rear return air outlet 3221, and prevent local large-area frost from forming at the second guide rib 3223, which will not be described in detail here.

Furthermore, the middle of the first guide rib 3123 is adjacent to the top of the vertical section 312, and both ends of the first guide rib 3123 are adjacent to the middle of the vertical section 312 in the vertical direction, so that the first guide rib 3123 is located in the upper part of the vertical section 312. On the one hand, the flow path of the condensed water on the first grid bar 3122 is shortened as much as possible, thereby reducing the amount of condensed water attached to the first rear return air outlet 3121 as much as possible; on the other hand, the first guide rib 3123 is also made to have a sufficient inclination or curvature so that the condensed water flows down from the first guide rib 3123 as soon as possible, avoiding the problem of frost or ice formation on the first guide rib 3123. Similarly, the middle part of the second guide rib 3223 is adjacent to the top of the vertical section 322, and both ends of the second guide rib 3223 are adjacent to the middle part of the vertical section 322 in the vertical direction, so that the second guide rib 3223 is located as a whole in the upper part of the vertical section 322, and its technical effect is the same as that of the first guide rib 3123, which will not be repeated here.

Fig. 6 is a schematic structural diagram of the first inner liner and the second inner liner according to an embodiment of the present invention. In some embodiments, a first water receiving tray 113 is formed at the bottom of the first cooling chamber 112, that is, the bottom wall of the first inner liner 11 below the first evaporator 21 forms the first water receiving tray 113, and the first water receiving tray 113 is formed by a plurality of first inclined portions, the bottoms of the plurality of first inclined portions intersect, and a first drain port 114 is provided at the intersection. A second water receiving tray 123 is formed at the bottom of the second cooling chamber 122, that is, the bottom wall of the second inner liner 12 below the second evaporator 22 forms the second water receiving tray 123, and the second water receiving tray 123 is formed by a plurality of second inclined portions, the bottoms of the plurality of second inclined portions intersect, and a second drain port 124 is provided at the intersection.

The refrigerator body 10 of the present invention defines two cooling chambers spaced apart in a transverse direction to provide cooling for two bottom storage compartments respectively. Compared with one cooling chamber, the width of each cooling chamber of the present invention is greatly reduced in the transverse direction. In addition, the water receiving tray at the bottom of each cooling chamber is surrounded by a plurality of inclined portions, and a drain outlet is provided at the intersection of the bottom of the plurality of inclined portions. Therefore, under the same height limit, the plurality of inclined portions used to form the water receiving tray of the present invention have a higher degree of inclination, which is conducive to the condensed water or defrosted water generated by the evaporator to flow to the drain outlet faster along the inclined portion, thereby avoiding the problem of frost blockage caused by evaporation.

Further, the plurality of first inclined portions include a first rear inclined portion inclined downward from the rear to the front, a first front inclined portion inclined downward from the front to the rear, and a first left inclined portion and a first right inclined portion inclined downward from the left and right sides to the lateral middle, respectively. The plurality of second inclined portions include a second rear inclined portion inclined downward from the rear to the front, a second front inclined portion inclined downward from the front to the rear, and a second left inclined portion and a second right inclined portion inclined downward from the left and right sides to the lateral middle, respectively. That is to say, the first water receiving tray 113 and the second water receiving tray 123 are both funnel-shaped components formed by four inclined parts at the front, rear, left and right directions that converge from top to bottom. On the one hand, the condensed water generated by the first evaporator 21 and dripping at any position of the first water receiving tray 113 can be effectively collected to the first drain port 114, and the condensed water generated by the second evaporator 22 and dripping at any position of the second water receiving tray 123 can be collected to the second drain port 124; on the other hand, compared with the inverted cone-shaped water receiving tray, the water receiving tray of the present invention surrounded by inclined parts in four directions is more conducive to the installation and support of the evaporator.

Specifically, the two inclined portions on the left and right sides of the first water receiving tray 113 and the second water receiving tray 123 are bent and extended, and in the direction of the drain outlet at the bottom thereof, the inclination of the two inclined portions gradually increases, slowing down the flow speed of the condensed water away from the drain outlet area and increasing the speed of the condensed water near the drain outlet area flowing to the drain outlet, thereby avoiding the accumulation of condensed water at the drain outlet and further improving the discharge efficiency of the condensed water. The two inclined portions in the front and rear directions of the water tray 123 may extend straight or in a curved manner.

In some embodiments, the first guide rib 3123 and the second guide rib 3223 both extend obliquely upward from the back to the front. As a result, the condensed water on the first guide rib 3123 and the second guide rib 3223 both have a tendency to flow to the lateral sides and backwards thereof. Even if the amount of condensed water on the first guide rib 3123 and the second guide rib 3223 is large, the condensed water will not overflow forward from the first guide rib 3123 and the second guide rib 3223, but will flow along the first guide rib 3123 and the second guide rib 3223 or the first grid bar and the second grid bar to the bottom wall of the first inner liner 11 located at the rear side of the vertical section 312 and the bottom wall of the second inner liner 12 located at the rear side of the vertical section 322, that is, to the first water receiving tray 113 and the second water receiving tray 123, so as to facilitate the discharge of the condensed water through the drain port at the bottom of the water receiving tray.

Specifically, the angles between the first guide rib 3123 and the second guide rib 3223 and the horizontal plane are preferably greater than 7°.

In some embodiments, the first cover plate 31 and the first inner liner 11, as well as the second cover plate 32 and the second inner liner 12, are connected by a snap-fitting manner. Even if the overlap surface between the cover plate and the inner liner is narrow or even the overlap surface is eliminated, the assembly between the cover plate and the inner liner will not be affected. It can be seen that the fixing method between the cover plate and the inner liner of the present invention is more reasonable and more suitable for refrigerators with double bottom evaporators and double inner liner.

Further, the first cover plate 31 includes two first side flanges 313 for forming two lateral sides thereof, and the two first side flanges 311 are respectively overlapped on the two first ribs 115 located on the lateral sides of the first liner 11, so as to assist in supporting the first cover plate 31 through the first ribs 115. The second cover plate 32 includes two second side flanges 323 for forming two lateral sides thereof, and the two second side flanges 323 are respectively overlapped on the two second ribs 125 located on the lateral sides of the second liner 12, so as to assist in supporting the second cover plate 32 through the second ribs 125. The first ribs 115 and the second ribs 125 have inclined sections extending obliquely, and the first side flanges 313 and the second side flanges 323 also have matching inclined sections, so as to increase the size of the ribs and the side flanges, so as to facilitate the setting of fasteners thereon for auxiliary connection.

In some embodiments, the housing 10 further defines a compressor compartment 13, a wind tube assembly 60, a first drain pipe 81, a second drain pipe 82, and an evaporation dish 90 at the bottom thereof. The refrigerator 1 further includes a compressor 51 and a heat dissipation fan 52 disposed in the compressor compartment 13. The wind tube assembly 60 is used to install the heat dissipation fan 52, and the wind tube assembly 60 extends along the depth direction of the housing 10 to divide the space in the compressor compartment 13 into two sub-spaces arranged side by side in a transverse direction, and the compressor 51 is located in one of the sub-spaces. The first drain pipe 81 and the second drain pipe 82 extend from the first cooling chamber 112 and the second cooling chamber 122 to the two sub-spaces of the compressor compartment 13, respectively.

FIG7 is a schematic structural diagram of a wind tube assembly and an evaporation dish after assembly according to an embodiment of the present invention, and FIG8 is a schematic structural exploded diagram of a wind tube assembly and an evaporation dish according to an embodiment of the present invention. Referring to FIG7 and FIG8 , the evaporation dish 90 is disposed in the compressor compartment 13, and has a first accommodating area 91 for receiving condensed water discharged from the first drain pipe 81, a second accommodating area 92 for receiving condensed water discharged from the second drain pipe 82, and a connecting flow channel 93 connecting the first accommodating area 91 and the second accommodating area 92. The connecting flow channel 93 is disposed in the wind tube assembly 60.

The air duct assembly 60 of the present invention divides the compressor compartment 13 into two left and right parts, and the two accommodating areas of the evaporating dish 90 are respectively located in the left and right parts, so as to respectively receive the condensed water discharged from the two drain pipes extending to the two parts. No drain pipe needs to be set into a particularly complex curved shape, which reduces the design difficulty and assembly difficulty of the drain pipe.

Due to the existence of the compressor 51, the remaining spaces of the two subspaces of the compressor compartment 13 separated by the air cylinder assembly 60 are necessarily different. The remaining space of the subspace where the compressor 51 is located is smaller, and the remaining space of the subspace away from the compressor 51 is larger. To this end, the first accommodating area 91 is located on the side of the air cylinder assembly 90 away from the compressor 51, and the second accommodating area 92 and the compressor 51 are located on the same side of the cylinder assembly 60. The cross-sectional area of the first accommodating area 91 is larger than the cross-sectional area of the second accommodating area 92, so as to make full use of the remaining space in the compressor compartment 13 as much as possible without generating structural interference to arrange the evaporation dish 90 with a larger capacity, thereby improving the ability of the evaporation dish 90 to receive condensed water.

Furthermore, the second accommodating area 92 and the connecting flow channel 93 are higher in the vertical direction than the first accommodating area 91, so that after the evaporating dish 90 is installed on the bottom plate 14 of the refrigerator 1, the second accommodating area 92 and the connecting flow channel 93 are both suspended above the bottom plate 14. As a result, the condensed water received by the second accommodating area 92 has a tendency to flow toward the first accommodating area 91, and therefore, the volume requirement for the second accommodating area 92 is relatively low, that is, the volume of the second accommodating area 92 does not need to be large, and the condensed water can also be effectively received, which is very suitable for being arranged in a small area adjacent to the compressor 51 in the compressor compartment 13. Therefore, the evaporating dish 90 of the present invention is very suitable for refrigerators with a double drainage system, and solves the thorny problem of condensed water discharge that is usually present in existing refrigerators of this type.

Furthermore, the bottom wall of the second accommodating area 92 extends downwardly at an angle from the second accommodating area 92 to the first accommodating area 91, which is beneficial for the condensed water in the second accommodating area 92 to flow to the first accommodating area 91 more quickly, thereby avoiding the accumulation of more condensed water in the second accommodating area 92 with a smaller capacity.

In some embodiments, the air duct assembly 60 is provided with an escape notch 621, and the connecting flow channel 93 is arranged in the escape notch 621. A downwardly protruding support seat 94 is provided on the outer side of the bottom of the connecting flow channel 93, and the support seat 94 is supported on the bottom plate 14 to provide stable support for the suspended connecting flow channel 93 and the second accommodating area 92, thereby improving the structural stability of the evaporating dish 90 and extending its service life.

Since the connecting flow channel 93 is suspended, it is inevitable that a gap below the connecting flow channel 93 will be formed at the bottom of the avoidance notch 621. When the heat dissipation fan 52 is running, a certain pressure difference is formed in the space on both sides of the air duct assembly 60. Under the action of this pressure difference, part of the airflow will flow back through the gap, causing the hot air to re-enter the space where the compressor 51 is located, reducing the heat dissipation efficiency of the compressor 51. To this end, the present invention configures the support seat 94 to block the flow surface of the avoidance notch 621 below the connecting flow channel 93, that is, to block the gap below the connecting flow channel 93 formed at the bottom of the avoidance notch 621. Therefore, the support seat 94 can not only support the connecting flow channel 93 and the second accommodating area 92, but also prevent the hot air from flowing back through the gap, thereby ensuring a better heat dissipation effect in the compressor compartment 13.

In some embodiments, a baffle 622 is provided at the avoidance notch 621, and the baffle 622 has an open state for opening the flow passage of the evaporating dish 90 at the avoidance notch 621 and a closed state for blocking the flow passage. When the condensed water flows between the two accommodating areas of the evaporating dish 90, the baffle 622 can be in an open state to conduct the flow passage at the avoidance notch 621, so as not to affect the normal flow and collection of the condensed water; when there is no condensed water flowing between the two accommodating areas of the evaporating dish 90, the baffle 622 can be in a closed state to block the flow passage at the avoidance notch 621, thereby preventing air from forming an airflow through the avoidance notch 621, and effectively avoiding the problem of internal air backflow in the compressor compartment 13.

The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. After detailed description, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

A refrigerator, characterized by comprising:

A box body, wherein a first storage compartment and a second storage compartment are defined, which are spaced apart and arranged side by side in a transverse direction of the box body, and a first cooling compartment and a second cooling compartment are spaced apart and arranged side by side in a transverse direction of the box body, wherein the first cooling compartment and the second cooling compartment are adjacently located below the first storage compartment and the second storage compartment, respectively;

The first evaporator and the second evaporator are respectively disposed in the first cooling chamber and the second cooling chamber, and are configured to provide cooling capacity for the first storage compartment and the second storage compartment respectively;

The first storage room is communicated with the first cooling room through a first air supply port located at the rear side of the first storage room and a first air return port located at the front side of the bottom of the box body, so as to allow cooling air in the first cooling room to flow into the first storage room through the first air supply port, and to allow return air in the first storage room to flow into the first cooling room through the first return air port; the second storage room is communicated with the second cooling room through a second air supply port located at the rear side of the second storage room and a second air return port located at the front side of the bottom of the box body, so as to allow cooling air in the second cooling room to flow into the second storage room through the second air supply port, and to allow return air in the second storage room to flow into the second cooling room through the second return air port.
The refrigerator according to claim 1, characterized in that

The box body further defines a third storage compartment located above the first storage compartment and the second storage compartment, and a third cooling compartment located at the rear side of the third storage compartment; and

The refrigerator further includes a third evaporator disposed in the third cooling chamber, and the third evaporator is configured to provide cold air for the third storage compartment.
The refrigerator according to claim 1, characterized in that

The first storage compartment and the first cooling compartment are separated by a first cover plate, and the second storage compartment and the second cooling compartment are separated by a second cover plate;

The first cover plate and the second cover plate each include a transverse section extending from rear to front and a vertical section extending obliquely from top to bottom and forward from the front end of the transverse section;

The first cooling chamber is located at the rear side of the vertical section of the first cover plate, and the first return air outlet comprises a first rear return air outlet opened on the vertical section of the first cover plate;

The second cooling chamber is located at the rear side of the vertical section of the second cover plate, and the second return air outlet includes a second rear return air outlet opened on the vertical section of the second cover plate.
The refrigerator according to claim 3, further comprising:

The first return air cover is arranged on the front side of the first cover plate and includes a transverse section of the first cover plate extending from the back to the front. A first horizontal cover plate extending downwardly from a front end of the first horizontal cover plate and a first vertical cover plate extending downwardly from a front end of the first horizontal cover plate; and

The second return air cover is arranged at the front side of the second cover plate, and comprises a second transverse cover plate extending from the rear to the front of the transverse section of the second cover plate and a second vertical cover plate extending downward from the front end of the second transverse cover plate; wherein

The first return air outlet also includes a first front return air outlet opened on the first vertical cover plate, and the second return air outlet also includes a second front return air outlet opened on the second vertical cover plate.
The refrigerator according to claim 4 is characterized in that the number of the first front return air outlets and the second front return air outlets are both multiple, and the multiple first front return air outlets are arranged at intervals in the up-down direction, and the multiple second front return air outlets are arranged at intervals in the up-down direction; each of the first front return air outlets and each of the second front return air outlets are laterally extending strip air outlets; the number of the first rear return air outlets and the second rear return air outlets are both multiple, and the multiple first rear return air outlets are arranged at intervals in the laterally, and the multiple second rear return air outlets are arranged at intervals in the laterally, and each of the first rear return air outlets and each of the second rear return air outlets are vertically extending strip air outlets.
The refrigerator according to claim 3 is characterized in that the front sides of the vertical sections of the first cover plate and the second cover plate are both provided with forward-protruding guide ribs; and the guide ribs extend obliquely or bend downward from the lateral middle of the vertical section where they are located to the lateral sides of the vertical section.
The refrigerator according to claim 1, wherein the housing further defines a compressor compartment located at a bottom thereof;

The refrigerator further comprises:

A compressor and a heat dissipation fan are arranged in the compressor compartment;

An air duct assembly, used for installing the heat dissipation fan, the air duct assembly extending along the depth direction of the box body to divide the space in the compressor compartment into two sub-spaces arranged side by side in a transverse direction, and the compressor is located in one of the sub-spaces;

A first drain pipe and a second drain pipe respectively extend from the first cooling chamber and the second cooling chamber to two sub-spaces of the compressor compartment; and

an evaporating dish, disposed in the compressor compartment, and having a first accommodating area for receiving condensed water discharged from the first drain pipe, a second accommodating area for receiving condensed water discharged from the second drain pipe, and a connecting flow channel connecting the first accommodating area and the second accommodating area; and

The connecting flow channel is arranged in the wind tube assembly.
The refrigerator according to claim 7, characterized in that the second accommodating area and the connecting flow channel are higher in the vertical direction than the first accommodating area, so that after the evaporating dish is installed on the bottom plate of the refrigerator, the second accommodating area and the connecting flow channel are both suspended above the bottom plate; and the bottom wall of the second accommodating area extends downwardly at an angle from the second accommodating area to the first accommodating area.
The refrigerator according to claim 8 is characterized in that an avoidance gap is opened on the air duct assembly, and the connecting flow channel is passed through the avoidance gap; a downwardly protruding support seat is provided on the outer side of the bottom of the connecting flow channel, the support seat is supported on the bottom plate, and the support seat is configured to block the flow surface of the avoidance gap located below the connecting flow channel.
The refrigerator according to claim 1 is characterized in that a first water receiving tray is formed at the bottom of the first cooling chamber, the first water receiving tray is surrounded by a plurality of first inclined portions, the bottoms of the plurality of first inclined portions intersect, and a first drain outlet is provided at the intersection; a second water receiving tray is formed at the bottom of the second cooling chamber, the second water receiving tray is surrounded by a plurality of second inclined portions, the bottoms of the plurality of second inclined portions intersect, and a second drain outlet is provided at the intersection.
The refrigerator according to claim 1 is characterized in that a first air duct assembly is provided on the rear side of the first storage compartment, a first air supply duct communicating with the first cooling chamber is defined inside the first air duct assembly, and the first air supply port is opened on the front side of the first air duct assembly; a second air duct assembly is provided on the rear side of the second storage compartment, a second air supply duct communicating with the second cooling chamber is defined inside the second air duct assembly, and the second air supply port is opened on the front side of the second air duct assembly.
The refrigerator according to claim 1 is characterized in that the first evaporator and the second evaporator are both inclined upward from front to back; a first air supply fan located at the rear side of the first evaporator is also provided in the first cooling chamber, and a second air supply fan located at the rear side of the second evaporator is also provided in the second cooling chamber.