WO2022057589A1

WO2022057589A1 - Refrigerator

Info

Publication number: WO2022057589A1
Application number: PCT/CN2021/114764
Authority: WO
Inventors: 崔展鹏; 李佳明; 姬立胜; 吕鹏
Original assignee: 重庆海尔制冷电器有限公司; 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2020-09-15
Filing date: 2021-08-26
Publication date: 2022-03-24
Also published as: AU2021343996A1; US20230314058A1; EP4206580A4; CN114183975A; EP4206580A1; CN114183975B

Abstract

A refrigerator, comprising a refrigerator body and a door body. The front side of the refrigerator body is open to define a first chamber; the door body comprises a main door and an auxiliary door; the main door is used for opening and closing the first chamber and defining a second chamber; the auxiliary door is used for opening and closing the second chamber; an air supply port and a return air vent are formed on the rear wall of the main door; the air supply port and the return air vent both are communicated with the first chamber and the second chamber; the rear wall is hollow, and a dew removal air channel communicated with the first chamber is defined in the rear wall; and a plurality of dew removal holes communicated with the second chamber and the dew removal air channel are backwards formed on the front surface of the rear wall. The refrigerator is configured to: be in a cooling cycle mode that air in the first chamber enters the second chamber by means of the air supply port and then returns to the first chamber by means of the return air vent; or be in a dew removal mode that air in the first chamber enters the dew removal air channel to enable part of an air flow to flow to the front surface of the rear wall by means of the dew removal holes so as to remove condensed dew on the surface of the rear wall. The refrigerator of the present invention can effectively remove the condensed dew on the inner walls of the chambers of the door body.

Description

refrigerator

technical field

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

Background technique

With the advancement of technology and the improvement of people's living standards, users have higher and higher requirements for refrigerators. Traditional refrigerators with only a refrigerating room, a freezing room and a changing room can no longer meet users' diverse needs for storage space.

In recent years, a composite door technology has appeared in the field of refrigerators. As is well known, the traditional refrigerator door is used to open and close the refrigerating compartment of the box. At most, a bottle seat is provided at the inner lining of the refrigerator door for placing bottled items. The composite door refrigerator improves the structure and function of the door, so that the door includes a main door and an auxiliary door, and the main door is used to open and close the refrigeration compartment. Also, the main door defines a door body compartment whose front side is open, and the sub door is used to open and close the door body compartment. During the rotation of the main door, the auxiliary door remains closed. The door body compartment can be used for storage, and when picking and placing, only the auxiliary door needs to be opened, and the main door is not opened. Not only makes the operation more convenient and quick, but also avoids excessive cooling loss caused by frequent opening of the main door.

However, during the operation of the composite door refrigerator, condensation often occurs on the inner wall of the door compartment, which affects the user experience and hinders the further development of the composite door technology. Therefore, how to reduce or avoid condensation on the inner wall of the door body has also become a technical problem to be solved urgently in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve at least one of the above-mentioned defects in the prior art, and to provide a refrigerator that can effectively remove condensation on the inner wall of the door compartment.

A further object of the present invention is to reduce the influence of decondensation on the normal refrigeration of the door body compartment.

In particular, the present invention provides a refrigerator, comprising a box body and a door body, the front side of the box body is opened to define a first compartment, the door body includes a main door and a secondary door, and the main door is used for opening and closing the first room and defines a second room, the secondary door is used to open and close the second room, and

The rear wall of the main door is provided with an air supply port and an air return port, both of which are connected to the first room and the second room; The surface is provided with a plurality of dew removal holes connecting the second chamber and the dew air duct; the refrigerator is configured as:

Can be in a cooling cycle mode in which air from the first compartment enters the second compartment through the air supply vents and returns to the first compartment through the return air vents; or

It is in the dew removal mode in which the air in the first compartment enters the dew removal air duct, so that part of the air flows through the dew removal hole to the front surface of the rear wall to remove the condensation on its surface.

Optionally, the dew-removing air duct has an inlet and an outlet that communicate with the first compartment; and the refrigerator is configured to keep the inlet and outlet in a closed state and an open state respectively when in the cooling cycle mode; when in the dew-removal mode, Leave both the import and export open.

Optionally, the inlet penetrates the side wall of the air supply port to communicate with the air supply port.

Optionally, the outlet penetrates the side wall of the air return port to communicate with the air return port.

Optionally, the air supply port and the air return port are located at the top and bottom of the rear wall, respectively.

Optionally, the refrigerator further includes: a damper installed at the air supply port and configured to be controllably moved to a cooling supply state in which the inlet is closed and the air supply port is turned on, or moved to a dew removal state in which the inlet is opened and the air supply port is closed. condition.

Optionally, one end of the damper is rotatably installed at the front edge of the inlet, so as to be rotated to a cooling state or a dew removal state.

Optionally, the refrigerator further includes: a fan, which is installed at the air supply port and is used to promote the air of the first compartment to flow toward the air supply port.

Optionally, in the direction from the air supply port to the air return port, the arrangement density of the dew holes gradually decreases.

Optionally, the dew-removing holes are elongated holes whose length direction is parallel to the airflow direction of the dew-removing air duct.

The refrigerator of the present invention is a composite door refrigerator. The door body includes a main door and an auxiliary door. The main door is used for opening and closing the first room defined by the box body, and the auxiliary door is used for opening and closing the second room defined by the main door. The present invention can effectively remove condensation on the inner wall of the second compartment by specially designing the main door. Specifically, the present invention makes the rear wall of the main door hollow to define a defrosting air duct, and makes a plurality of dew holes open backward on the front surface of the rear wall. When the second space needs to be refrigerated normally, the refrigerator operates the cooling cycle mode, so that the air in the first room normally enters the second room through the air supply port to cool the second room. When condensation occurs on the rear wall of the second room (that is, the front surface of the rear wall of the main door) and needs to be removed, the refrigerator operates in the dew removal mode, so that the air in the first room enters the dew duct inside the rear wall of the main door. So that part of the airflow flows through the dew hole to the front surface of the rear wall. The relative humidity of the air in the dew duct must be lower than the original airflow at the front surface of the rear wall of the main door (the relative humidity of the air near condensation must be high), so the low-humidity air introduced into the dew duct can promote condensation. evaporation.

In addition, when the refrigerator of the present invention operates in the dew removal mode, it does not use traditional methods such as electrically heating the rear wall or introducing hot air, but uses the cold air of the first room to remove dew, and the dew removal process basically does not affect the dew removal process. The normal cooling of the second chamber has an impact and the structure is very cleverly designed.

Further, in the refrigerator of the present invention, the air duct circulation is formed between the inlet and outlet of the dew duct and the first room, so as to prevent the airflow used for dew from accumulating in the dew duct and the dew duct. There is no circulation near the dew hole, which affects the dew removal effect.

Further, in the refrigerator of the present invention, the inlet of the dew-removing air duct is connected to the air supply port, and the outlet is connected to the air return port, which simplifies the control of the air inlet and outlet on the one hand, and can use a damper to control the opening and closing of the air supply port and the inlet, and the structure is very ingenious; On the other hand, the opening structure of the rear wall of the main door is also simplified, and the rear surface of the rear wall of the main door only needs to directly open the air supply port and the air return port.

Further, it is recognized that the closer to the air supply port, the more condensation is generated on the rear wall of the main door, and the closer to the return air port, the less condensation is generated. Therefore, the present invention designs the arrangement density of the dew-removing holes, so that the arrangement density of the dew-removing holes is gradually reduced in the direction from the air supply port to the air return port, so as to match the changing trend of the condensation degree at different positions on the rear wall of the main door. Avoid making too many meaningless openings.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic diagram of a refrigerator according to an embodiment of the present invention in a cooling cycle mode;

Fig. 2 is the enlarged view of A place of Fig. 1;

FIG. 3 is a schematic view of the state of the refrigerator shown in FIG. 1 when it is in a dew removal mode;

FIG. 4 is an enlarged view of part B of FIG. 3 .

detailed description

The refrigerator according to the embodiment of the present invention will be described below with reference to FIGS. 1 to 4 . Wherein, the orientation or positional relationship indicated by "front", "rear", "upper", "lower", "top", "bottom", "inside", "outside", "horizontal", etc. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention .

1 is a schematic diagram of a refrigerator in a cooling cycle mode according to an embodiment of the present invention; FIG. 2 is an enlarged view of the part A of FIG. 1 ; FIG. 3 is a schematic diagram of the state of the refrigerator shown in FIG. It is an enlarged view of B in FIG. 3 , and the wind directions are indicated by arrows in each figure.

As shown in FIGS. 1 to 4 , the refrigerator according to the embodiment of the present invention may generally include a box body 100 and a door body 200 . The front side of the box body 100 (the side where the door body 200 is located is used as the front side of the refrigerator in the present invention, and the front and rear directions have been shown in the figure) is opened to define the first compartment 101 . The door body 200 includes a main door 210 and an auxiliary door 220 . The main door 210 is used for opening and closing the first room 101 and defines a second room 201 , and the auxiliary door 220 is used for opening and closing the second room 201 .

The main door 210 can be rotatably mounted on the box body 100 at the front side of the box body 100 , the front side of the main door 210 is opened to define the aforementioned second compartment 201 , and the auxiliary door 220 can be rotatably mounted on the front side of the main door 210 Installed on the main door 210. When the main door 210 is open, the user accesses items from the first compartment 101 . When the main door 210 is closed and the auxiliary door 220 is opened, the user can access items from the second compartment 201 .

The refrigerator can be refrigerated by vapor compression refrigeration cycle system, semiconductor refrigeration system or other means. According to the different cooling temperature, the various compartments inside the refrigerator can be divided into refrigerating compartment, freezing compartment and changing room. For example, the temperature in the refrigerator is generally controlled between 2°C and 10°C, preferably 4°C to 7°C. The temperature range in the freezer is generally controlled at -22°C to -14°C. The variable temperature chamber can be adjusted between -18°C to 8°C to achieve a variable temperature effect. The optimal storage temperature for different types of items is different, and the storage compartments suitable for storage are also different. For example, fruit and vegetable foods are suitable for storage in the refrigerator compartment, and meat foods are suitable for storage in the freezer compartment. The first compartment 101 in the embodiment of the present invention is preferably a refrigerator compartment.

The refrigerator in the embodiment of the present invention is a composite door refrigerator, and the existing composite door refrigerator often has the problem of condensation on the inner wall of the door body compartment (the second compartment 201 in the present invention). The inventor realized that since the rear wall 211 of the main door 210 is adjacent to the first room 101, and the air in the first room 101 can conduct heat transfer through thermal conduction, the temperature of the front surface of the rear wall 211 is higher than that of the second room 101. The temperature of other walls of the chamber 201 is lower, and condensation is more likely to occur.

Based on the above knowledge, the embodiment of the present invention specifically designs the main door 210 to dew the front surface of the rear wall 211 of the second compartment 201 in a targeted manner. Specifically, the rear wall 211 of the main door 210 is provided with an air supply port 212 and an air return port 214 , both of which are connected to the first compartment 101 and the second compartment 201 . In addition, the rear wall 211 of the main door 210 is hollow, and a dew-removing air duct 215 that communicates with the first compartment 101 is defined inside the rear wall 211 . That is, the hollow space of the rear wall 211 constitutes the dew removal duct 215 . The front surface of the rear wall 211 is provided with a plurality of dew removal holes 2154 which communicate with the second compartment 201 and the dew removal air duct 215 . The refrigerator is configured to be in a cooling cycle mode in which the air of the first room 101 enters the second room 201 through the air supply port 212 and then returns to the first room 101 through the air return port 214, so as to utilize the cold air of the first room 101 The second compartment 201 is refrigerated, as shown in FIGS. 1 and 2 . Or, the refrigerator is in the dew-removal mode in which the air of the first compartment 101 enters the dew-removal air duct 215, so that part of the air flows through the dew-removal hole 2154 to the front surface of the rear wall 211 to remove the condensation on its surface, as shown in FIG. 3 . and Figure 4.

In the embodiment of the present invention, the refrigerator is in the aforementioned cooling cycle mode in a normal state. However, when there is a lot of condensation on the front surface of the rear wall 211 of the main door 210 due to the introduction of humid air or the storage of high-humidity items due to the door opening and closing operation, the refrigerator can be controlled to operate the aforementioned dew removal mode, so that the first compartment 101 The air enters the dew removal air duct 215 inside the rear wall 211 of the main door 210 , so that part of the air flows through the dew removal hole 2154 to the front surface of the rear wall 211 . Since the relative humidity of the air in the dew duct 215 must be lower than the relative humidity of the original airflow at the front surface of the rear wall 211 of the main door 210 (the relative humidity of the air near the condensation must be high), the air introduced into the dew duct 215 Low humidity air can promote the evaporation of condensation and complete the dew removal process. When the dew removal is completed, the refrigerator can be controlled to switch to the cooling cycle mode.

The switching timing of the cooling cycle mode and the dew removal mode can be automatically controlled by the refrigerator, for example, timing switching or automatic switching of the refrigerator operating mode according to the detection result of the humidity sensor. It can also be controlled manually. For example, when the user finds that dew removal is required or needs to be stopped, the refrigerator operation mode can be manually switched.

When the refrigerator of the embodiment of the present invention operates in the dew removal mode, the conventional method such as electrically heating the rear wall 211 or introducing hot air is not adopted, and the cold air of the first room 101 is still used for dew removal, and the dew removal process is basically It will not affect the normal cooling of the second room 201, and the structure design is very clever.

In some embodiments, as shown in FIGS. 1 and 3 , the dew removal duct 215 may have an inlet 2151 and an outlet 2152 communicating with the first chamber 101 , so that the dew removal duct 215 and the first chamber 101 can have an inlet 2151 and an outlet 2152 . An air duct circulation is formed between them, so as to prevent the airflow used for dew removal from accumulating in the vicinity of the dew removal air duct 215 and the dew removal hole 2154 and unable to circulate, thereby affecting the dew removal effect. In addition, the refrigerator is also configured to keep the inlet 2151 and outlet 2152 in a closed state and an open state, respectively, when in the cooling cycle mode; and in an open state when in the dew removal mode. That is to say, in the cooling circulation mode, only the inlet 2151 of the dew duct 215 needs to be closed. When in the dew removal mode, the inlet 2151 of the dew duct 215 is opened. Since the conduction and closing of the dew duct 215 has been controlled by controlling the opening and closing of the inlet 2151 and the outlet 2152 of the dew duct 215, there is no need to control the outlet 2152 of the dew duct 215. In the two modes, the outlet 2152 of the dew duct 215 is in a normally open state and does not need to be controlled, so as to simplify the structure and control of the refrigerator.

In some embodiments, as shown in FIGS. 1 and 3 , the inlet 2151 of the dew air duct 215 can penetrate the side wall of the air supply port 212 to communicate with the air supply port 212 . That is, the dew-removing air duct 215 communicates with the first compartment 101 through the air supply port 212 , and there is no need for an additional opening on the rear wall 211 . The outlet 2152 of the dew duct 215 can also penetrate the side wall of the air return port 214 to communicate with the air return port 214 . That is, the dew-removing air duct 215 communicates with the first compartment 101 by using the air return port 214 , and there is no need for an additional opening on the rear wall 211 . This design structure is very ingenious, which simplifies the opening structure of the rear wall 211 of the main door 210, so that the rear surface of the rear wall 211 of the main door 210 only needs to directly open the air supply port 212 and the air return port 214.

In some embodiments, as shown in FIGS. 1 and 3 , the air supply port 212 and the air return port 214 are located at the top and bottom of the rear wall 211 , respectively. When the refrigerator is in the cooling cycle mode, after the cold air flows into the second compartment 201 from the air supply port 212, it has a sinking effect due to its relatively high density, and will flow downward to refrigerate each height area of the second compartment 201 in turn. The air temperature gradually increases and then flows back to the first compartment 101 from the air return port 214 at the bottom of the second compartment 201 . In this way, a smoother air path circulation is formed, and the cooling effect of the second chamber 201 is improved. When the refrigerator is in the dew removal mode, the cold air enters the dew removal air duct 215 from the top of the dew removal air duct 215, which is also more favorable for downward flow, so that the dew removal air duct 215 has better circulation, which is beneficial to speed up the dew removal process.

As shown in FIG. 2 and FIG. 4 , the refrigerator may further include a damper 216, which is installed at the air supply port 212 and configured to be controllably moved to a cooling state in which the inlet 2151 is closed and the air supply port 212 is connected (as shown in FIG. 2), or move to the dew-removing state in which the inlet 2151 is opened and the air supply port 212 is closed (as shown in FIG. 4 ). This embodiment effectively utilizes the advantage that the inlet 2151 is connected with the air supply port 212, and uses a damper 216 to control the air supply port 212 and the inlet 2151 at the same time, which simplifies the control of the air in and out, and the design is very ingenious.

Specifically, as shown in FIGS. 2 and 4 , one end of the damper 216 can be rotatably installed at the front edge of the inlet 2151 so as to be rotated to a cooling state (as shown in FIG. 2 ) or a dew removal state (as shown in FIG. 4 ). In the embodiment of the present invention, the operation mode switching of the refrigerator can be completed only by controlling the rotation of one damper 216 without setting complex motion mechanism and control logic, and the structure and control are greatly simplified.

In some embodiments, as shown in FIG. 1 to FIG. 4 , the refrigerator further includes a fan 230 , and the fan 230 is located at the air supply port 212 , so as to promote the air of the first compartment 101 to flow to the air supply port 212 to speed up the cooling cycle speed. Of course, for the solution in which the inlet 2151 is communicated with the air supply port 212 , the fan 230 is also used to promote the air in the first compartment 101 to flow to the dew removal air duct 215 .

The inventor realized that the closer to the air supply port 212, the more condensation is generated on the rear wall 211 of the main door 210, and the closer to the air return port 214, the less condensation is generated. For this reason, the embodiment of the present invention specially designs the arrangement density of the dew holes 2154 . In the direction from the air supply port 212 to the air return port 214 , the arrangement density of the dew holes 2154 is gradually reduced to match the rear of the main door 210 . The changing trend of condensation degree at different positions of the wall 211 reduces excessive and meaningless openings. The opening area of the rear wall 211 of the main door 210 may be spread over the entire front surface of the rear wall 211 to achieve sufficient dew removal, or may be spread over a part of the front surface of the rear wall 211 . The porosity of the dew holes 2154 may be 30%˜80%. The detox holes 2154 may be arranged in a matrix or other arrangements. The dew hole 2154 may be circular, oval, square or other shapes. Preferably, the dew-removing holes 2154 are elongated holes whose length direction is parallel to the airflow direction of the dew-removing air duct 215. This structure is conducive to destroying the integrity of dewdrops and accelerating the dispersion and evaporation of dewdrops.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A refrigerator includes a box body and a door body, the front side of the box body is opened to define a first compartment, the door body includes a main door and a sub door, the main door is used for opening and closing the first compartment and defines a second room, the auxiliary door is used to open and close the second room, wherein,

The rear wall of the main door is provided with an air supply port and an air return port, both of which are connected to the first compartment and the second compartment; the rear wall is hollow, and its interior defines a connection to the first compartment. The dew-removing air duct of the room, the front surface of the rear wall is provided with a plurality of dew-removing holes connecting the second compartment and the dew-removing air duct; the refrigerator is configured as:

may be in a cooling cycle mode in which the air of the first compartment enters the second compartment through the air supply port and then returns to the first compartment through the return air port; or

It is in the dew removal mode in which the air of the first compartment enters the dew dew duct, so that part of the air flows through the dew dew hole to the front surface of the rear wall to remove condensation on the surface thereof.
The refrigerator according to claim 1, wherein,

The dew duct has an inlet and an outlet that communicate with the first compartment; and

The refrigerator is configured such that when in the cooling cycle mode, the inlet and the outlet are in a closed state and an open state, respectively; when in the dew removal mode, both the inlet and the outlet are in a closed state and an open state, respectively. open state.
The refrigerator according to claim 2, wherein,

The inlet penetrates the side wall of the air supply port to communicate with the air supply port.
The refrigerator according to claim 3, wherein,

The outlet penetrates the side wall of the air return port to communicate with the air return port.
The refrigerator according to claim 4, wherein,

The air supply port and the air return port are located at the top and bottom of the rear wall, respectively.
The refrigerator of claim 5, further comprising:

A damper is installed at the air supply port and is configured to be controllably moved to a cooling state in which the inlet is closed and the air supply port is turned on, or to a cooling state that opens the inlet and closes the air supply port Dew state.
The refrigerator according to claim 6, wherein,

One end of the damper is rotatably mounted on the front edge of the inlet so as to be rotated to the cooling state or the dew removal state.
The refrigerator of claim 1, further comprising:

A fan is installed at the air supply port, and is used for promoting the air of the first compartment to flow to the air supply port.
The refrigerator according to claim 1, wherein,

In the direction from the air supply port to the air return port, the arrangement density of the dew removal holes gradually decreases.
The refrigerator according to claim 1, wherein,

The dew-removing holes are elongated holes whose length direction is parallel to the airflow direction of the dew-removing air duct.