CN116255779A - Refrigerator with a refrigerator body - Google Patents

Abstract

The invention discloses a refrigerator, which comprises a refrigerator body and an air supply assembly, wherein a transverse partition plate and a vertical middle partition plate are arranged in an inner cavity of the refrigerator body to form a first refrigeration compartment, a second refrigeration compartment and a third refrigeration compartment; the air supply assembly is arranged in the middle partition plate, the air supply assembly comprises an air duct shell with a heat exchange cavity, a fan and an evaporator are arranged in the heat exchange cavity, the top of the air duct shell is connected with a first air duct piece and a second air duct piece, the first air duct piece is provided with a first air outlet communicated with a first refrigeration room, the second air duct piece is provided with a second air outlet communicated with a second refrigeration room, the side face of the air duct shell is connected with a third air duct piece, the third air duct piece is provided with a third air outlet communicated with a third refrigeration room, the fan is used for supplying air to the first air duct piece, the second air duct piece and the third air duct piece, an inlet of the first air duct piece is provided with a first air door, and an inlet of the third air duct piece is provided with a second air door. The air supply component of the refrigerator does not occupy the deep space of the refrigerator, and the temperature of the compartment is uniformly distributed.

Description

Refrigerator with a refrigerator body

Technical Field

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

Background

In the related art, an evaporator is generally arranged at the rear part of a box body of the air-cooled refrigerator, cold air is conveyed to a freezing chamber and a refrigerating chamber through a freezing air duct component and a refrigerating air duct component, however, the structure occupies the back space of the box body, influences the depth of a drawer, and the cold air is blown to the front end from the rear part of a compartment, so that the temperature distribution in the box body is not uniform easily due to small air quantity at the front end; a drawer-type zero-degree storage chamber is arranged in the refrigerating chamber of a part of the refrigerator, and the depth space is further compressed.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the refrigerator which can effectively enlarge the storage space of the refrigerator.

The refrigerator comprises a refrigerator body and an air supply assembly, wherein a transverse partition plate and a vertical middle partition plate are arranged in an inner cavity of the refrigerator body to form a first refrigeration compartment, a second refrigeration compartment and a third refrigeration compartment; the air supply assembly is arranged in the middle partition plate, the air supply assembly comprises an air duct shell with a heat exchange cavity, a fan and an evaporator are arranged in the heat exchange cavity, the top of the air duct shell is connected with a first air duct piece and a second air duct piece, the first air duct piece is provided with a first air outlet communicated with a first refrigeration compartment, the second air duct piece is provided with a second air outlet communicated with a second refrigeration compartment, the side face of the air duct shell is connected with a third air duct piece, the third air duct piece is provided with a third air outlet communicated with the third refrigeration compartment, the fan is used for supplying air to the first air duct piece, the second air duct piece and the third air duct piece, the inlet of the first air duct piece is provided with a first air door, and the inlet of the third air duct piece is provided with a second air door.

The refrigerator provided by the embodiment of the invention has at least the following beneficial effects: the air supply assembly is arranged in the middle partition plate, so that the deep space of the refrigerator is not occupied, and the storage spaces of the first refrigeration compartment, the second refrigeration compartment and the third refrigeration compartment are increased; the fan of the air supply assembly drives air to flow, cold air is produced through the evaporator, the cold air enters the first refrigeration compartment from the first air outlet of the first air duct piece, enters the second refrigeration compartment from the second air outlet of the second air duct piece and enters the third refrigeration compartment from the third air outlet of the third air duct piece, and the first air outlet and the second air outlet are both positioned on the side face of the middle partition plate instead of the back face of the refrigerator, so that the temperature uniformity of the first refrigeration compartment and the second refrigeration compartment can be improved; the first air door and the second air door are used for respectively controlling the air quantity of the first air channel piece and the third air channel piece, and the temperature of each compartment is accurately controlled.

According to some embodiments of the invention, the first air duct piece and the second air duct piece are arranged side by side at the top of the air duct shell, the first air duct piece is provided with a plurality of first air outlets, the first air outlets are vertically and alternately distributed, and the second air duct piece is provided with a plurality of second air outlets, and the second air outlets are vertically and alternately distributed.

According to some embodiments of the invention, a second air return port and a third air return port are arranged at the lower end of the air duct shell, the second air return port is positioned on the side wall of the second refrigeration compartment, the third air return port is positioned on the side wall of the third refrigeration compartment, the evaporator is positioned below the fan, an air return cavity is formed below the evaporator, and the second air return port and the third air return port are communicated with the air return cavity.

According to some embodiments of the invention, a first return air pipe is arranged at the lower end of the air duct shell, the first return air pipe is obliquely arranged and faces downwards, an inlet end of the first return air pipe is positioned on the side wall of the third refrigeration compartment to form the third return air inlet, and an outlet end of the first return air pipe is communicated with the return air cavity.

According to some embodiments of the invention, a first air return opening is formed in the top of the air duct housing, the first air return opening is located on the side wall of the first refrigeration compartment, and the first air return opening and the first air duct piece are distributed on two sides of the second air duct piece.

According to some embodiments of the invention, a return air channel is formed in the air channel shell, the upper end of the return air channel is communicated with the first return air inlet, and the lower end of the return air channel is communicated with the return air cavity.

According to some embodiments of the invention, a second return air pipe is arranged on the side wall of the air duct shell, one end of the second return air pipe is communicated with the side wall of the first refrigeration compartment, and the other end of the second return air pipe is communicated with the return air channel.

According to some embodiments of the invention, the air duct housing is provided with a detachable side plate to open or close the heat exchange cavity, and the side plate is a part of side wall of the second refrigeration compartment.

According to some embodiments of the invention, the lower end of the side plate is provided with a plurality of ventilation holes, and the ventilation holes are closely arranged to form the second air return opening.

According to some embodiments of the invention, the third air duct piece is connected to the top wall of the third refrigeration compartment, an air supply groove is formed in the top surface of the third air duct piece, one end of the air supply groove is communicated with the third air outlet, and the other end of the air supply groove is connected with the second air door.

According to some embodiments of the invention, the third air duct piece is connected with a switching tube, the second air door is arranged inside the switching tube, and the switching tube is fixedly connected with the air duct shell and is communicated with the heat exchange cavity.

According to some embodiments of the invention, the air supply assembly further comprises a fan cover, wherein the fan cover is located in the heat exchange cavity and covers the fan, the fan cover is provided with a first outlet and a second outlet, the first outlet is communicated with the first air duct piece, and the second outlet is communicated with the second air duct piece.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of the overall structure of a case according to an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of a case according to an embodiment of the present invention (another view);

FIG. 3 is a schematic diagram of an air supply assembly according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an air supply assembly according to an embodiment of the present invention (another view);

FIG. 5 is a schematic view of a third air duct member in a variable temperature chamber according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of an air supply assembly according to another embodiment of the present invention;

fig. 7 is a schematic view of a refrigerator according to another embodiment of the present invention (in a state in which a second door is closed);

fig. 8 is a schematic view of the refrigerator shown in fig. 7, with a door omitted.

Reference numerals:

the refrigerator comprises a box body 100, a refrigerating chamber 101, a freezing chamber 102, a temperature changing chamber 103, a second door 104, a middle partition plate 110 and a transverse partition plate 120;

the first air supply assembly 200, the heat exchange cavity 201, the return air cavity 202, the return air channel 203, the air duct shell 210, the first return air inlet 211, the second return air inlet 212, the third return air inlet 213, the first return air duct 214, the second return air duct 215, the fourth return air inlet 216, the fourth return air duct 217, the fan 220, the evaporator 230, the first air duct piece 240, the first air outlet 241, the first air door 242, the second air duct piece 250, the second air outlet 251, the third air duct piece 260, the third air outlet 261, the second air door 262, the switching tube 263, the air supply groove 264, the fan cover 270 and the side plate 280;

the air conditioner comprises a third return air pipe 300, a first opening 301, a second opening 302, a third opening 303, a straight pipe portion 310, a first bending portion 320, a second bending portion 330 and a third bending portion 340.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms upper, lower, front, rear, etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present invention, it should be noted that terms such as arrangement, installation, connection, etc. should be construed broadly, and those skilled in the art may reasonably determine the specific meaning of the foregoing terms in the present invention in combination with the specific content of the technical solution.

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings, in which it is apparent that the embodiments described below are some, but not all embodiments of the invention.

The inventor finds that the air-cooled refrigerator in the related art generally adopts a rear air outlet mode, and the refrigerating air duct component are arranged at the rear part of the refrigerator body, so that the following problems exist: the refrigerating air duct component and the refrigerating air duct component occupy the back space and influence the depth of the drawer; the air cooled by the evaporator blows to the front end of the box body from the rear part, when more food is stored, the air quantity of the front end of the box body is smaller, the temperature is easy to rise, and the food preservation is not facilitated. According to the refrigerator, the arrangement of the first air supply assembly and the evaporator is optimized, the space on the back of the refrigerator body is not occupied, the depth space of the drawer can be enlarged, and the effective storage space is increased.

Referring to fig. 1 and 2, a refrigerator according to an embodiment of the present invention includes a refrigerator body 100, and a first refrigerating compartment, a second refrigerating compartment, and a third refrigerating compartment are provided in the refrigerator body 100, and the first refrigerating compartment, the second refrigerating compartment, and the third refrigerating compartment may be one of a refrigerating compartment, a freezing compartment, and a temperature changing compartment, and hereinafter, the first refrigerating compartment is a refrigerating compartment 101, the second refrigerating compartment is a freezing compartment 102, and the third refrigerating compartment is a temperature changing compartment 103.

A middle partition plate 110 and a transverse partition plate 120 are arranged in the inner cavity of the box body 100, the middle partition plate 110 is vertically arranged, and the middle partition plate 110 separates the refrigerating chamber 101 from the freezing chamber 102; the temperature changing chamber 103 is a chamber capable of changing temperature, and various articles such as medicines, foods and the like with special storage temperature requirements can be stored by adjusting the temperature. Structurally, the temperature changing chamber 103 may be disposed below the refrigerating chamber 101 or below the freezing chamber 102, and the temperature changing chamber 103 is disposed below the refrigerating chamber 101 as described below, and the diaphragm 120 is located between the temperature changing chamber 103 and the refrigerating chamber 101. The refrigerator of the embodiment adopts a side-by-side door design in which the refrigerating compartment 101 is located on the right side of the cabinet 100, the freezing compartment 102 is located on the left side of the cabinet 100, the cabinet 100 is further provided with a first door body through which the refrigerating compartment 101 can be opened or closed, and a second door body 104 through which the freezing compartment 102 can be opened or closed, and the partition 110 simultaneously serves as a partial door frame of the first door body and the second door body 104.

The refrigerator is provided with the air supply assembly 200, and the air supply assembly 200 is installed inside the middle partition plate 110, and the middle partition plate 110 has a certain thickness capable of accommodating the air supply assembly 200 and the heat insulation layer. According to the shape of the middle partition plate 110, the air supply assembly 200 is also vertically arranged, the air supply assembly 200 comprises an air duct shell 210, a first air duct piece 240 and a second air duct piece 250, a heat exchange cavity 201 is arranged in the air duct shell 210, a fan 220 and an evaporator 230 are arranged in the heat exchange cavity 201, the first air duct piece 240 and the second air duct piece 250 are connected to the top of the air duct shell 210, a first air outlet 241 is arranged on the side surface of the first air duct piece 240 facing the refrigerating chamber 101, and the first air outlet 241 is communicated with the refrigerating chamber 101 so as to input cold air into the refrigerating chamber 101; the second air duct 250 is provided with a second air outlet 251 at a side facing the freezing chamber 102, and the second air outlet 251 is communicated with the freezing chamber 102 to input cold air into the freezing chamber 102. When the refrigerator is operated, air is driven to flow by the fan 220, the air flows through the evaporator 230, and the refrigerant in the evaporator 230 is evaporated to absorb heat, so that cold air is produced, the cold air is input into the first air duct member 240 and the second air duct member 250, and then is input into the refrigerating chamber 101 from the first air outlet 241 and is input into the freezing chamber 102 from the second air outlet 251, so that the refrigerating chamber 101 and the freezing chamber 102 keep stable low temperature, and various articles and food materials are stored.

It can be appreciated that the first air door 242 is disposed at the inlet of the first air duct member 240, and the flow rate of the cold air input into the first air duct member 240 can be controlled through the first air door 242, so that the temperature of the refrigerating chamber 101 can be accurately controlled according to the cooling capacity requirement of the refrigerating chamber 101, and the temperature fluctuation can be reduced. The first air door 242 can also open or close the first air channel member 240, for example, when a large amount of cooling capacity is needed in the freezing chamber 102, the first air door 242 is used to close the first air channel member 240, so that cooling air is input into the freezing chamber 102, which is helpful for quickly reducing the temperature of the freezing chamber 102, and the purpose of quick freezing is achieved.

In addition, a third air duct member 260 is further disposed on the side surface of the air duct housing 210, the third air duct member 260 is provided with a third air outlet 261, the third air outlet 261 is communicated with the temperature changing chamber 103, when the refrigerator operates, the air is driven to flow through the fan 220, the air flows through the evaporator 230, the refrigerant in the evaporator 230 is utilized to evaporate to absorb heat, so as to prepare cold air, the cold air is input into the third air duct member 260, and then is input into the temperature changing chamber 103 from the third air outlet 261, so that the temperature changing chamber 103 keeps stable low temperature, and various articles and food materials can be stored. The second air door 262 is arranged at the inlet of the third air duct member 260, and the second air door 262 is used for controlling the flow of cold air input into the third air duct member 260 and opening or closing the third air duct member 260, so that the temperature of the variable temperature chamber 103 can be changed, the variable temperature chamber 103 has a larger temperature adjusting range, and the variable temperature chamber is convenient for a user to use.

Referring to fig. 3, in order to input cold air into the third air duct member 260, a switching tube 263 is disposed on the third air duct member 260, the switching tube 263 is fixedly connected to the air duct housing 210, and two ends of the switching tube 263 are respectively communicated with the third air duct member 260 and the heat exchange cavity 201, so as to realize the delivery of the cold air. And a second damper 262 is installed inside the transfer tube 263, and the flow of the cool air inputted into the third air channel member 260 is controlled by the second damper 262, and the third air channel member 260 is opened or closed. In order to facilitate assembly and maintenance of the second air door 262, the adapter tube 263 adopts a spliced structure, and maintenance operation is facilitated by disassembling the adapter tube 263. It will be appreciated that the location where the transition tube 263 communicates with the heat exchange chamber 201 corresponds to the blower 220 to enable cool air to enter the transition tube 263.

It can be appreciated that the first air duct member 240, the second air duct member 250 and the third air duct member 260 are all communicated with the heat exchange cavity 201, and all the air fans 220 deliver cold air, so that the temperatures of the refrigerating chamber 101, the freezing chamber 102 and the temperature changing chamber 103 can be accurately controlled by arranging the first air door 242 and the second air door 262, and the temperature fluctuation range can be reduced. The first damper 242 and the second damper 262 are similar in structure and typically employ a motor to drive rotation of the valve plates of the dampers to effect opening and closing and flow regulation. In addition, a damper may be provided at the inlet of the second air duct member 250, and the refrigerating chamber 101, the freezing chamber 102 and the temperature changing chamber 103 may be independently controlled.

According to the refrigerator disclosed by the embodiment of the invention, the air supply assembly 200 is arranged in the middle partition plate 110, so that the depth space of the refrigerator is not occupied, the depth sizes of the refrigerating chamber 101, the freezing chamber 102 and the temperature changing chamber 103 are increased, the storage space is increased, more objects can be accommodated, and the refrigerator is convenient to use; the fan 220 of the air supply assembly 200 drives air to flow, cold air is produced through the evaporator 230, the cold air is split and enters the first air duct piece 240, the second air duct piece 250 and the third air duct piece 260, the cold air enters the refrigerating chamber 101 from the first air outlet 241 of the first air duct piece 240, the freezing chamber 102 from the second air outlet 251 of the second air duct piece 250 and the variable temperature chamber 103 from the third air outlet 261 of the third air duct piece 260, so that the refrigerating chamber 101, the freezing chamber 102 and the variable temperature chamber 103 are cooled, and the low-temperature environment is maintained.

The first air outlet 241 and the second air outlet 251 are located at the side surfaces of the middle partition plate 110, and in the depth direction, may be near the front part of the refrigerator, may be the middle part of the refrigerator, may be the back part of the refrigerator, and the air outlet is located at the side surfaces of the refrigerating chamber 101 and the freezing chamber 102, so that the uniformity of the temperatures of the refrigerating chamber 101 and the freezing chamber 102 is improved, and various articles are stored.

Referring to fig. 5, it can be understood that the third air duct member 260 is disposed along the depth direction of the temperature changing chamber 103, the third air outlet 261 is located near one end of the second door 104, and the cold air blown out from the third air outlet 261 is near the second door 104, so as to facilitate the diffusion of the cold air, and make the temperature of the temperature changing chamber 103 more uniform throughout; in addition, the cold air also reduces the temperature of the third air channel member 260, and the low-temperature third air channel member 260 can help the air in the temperature changing chamber 103 to reduce the temperature, and the third air channel member 260 has a larger surface area, which is helpful to improve the uniformity of the temperature distribution in the temperature changing chamber 103.

Referring to fig. 3 and 5, in order to convey cold air, an air supply groove 264 is provided on the third air duct member 260, the air supply groove 264 is used as a channel for flowing cold air, one end of the air supply groove 264 is communicated with the heat exchange cavity 201, the other end of the air supply groove 264 is communicated with the third air outlet 261, so as to convey cold air from the heat exchange cavity 201 to the temperature changing chamber 103, the third air outlet 261 can be arranged at each position of the temperature changing chamber 103, which is helpful for improving the temperature uniformity of each position of the temperature changing chamber 103, and the air supply groove 264 extends to the third air outlet 261, thereby meeting the requirement of cold air conveying.

It is to be appreciated that, considering that the third air duct member 260 is fixed on the top wall of the temperature changing chamber 103, the air supply groove 264 may be disposed on the top surface of the third air duct member 260, the third air duct member 260 is attached to the top wall of the temperature changing chamber 103, and the top wall of the temperature changing chamber 103 is utilized to seal the air supply groove 264, so as to prevent the leakage of cold air. The air supply groove 264 is an open groove, so that the structure of the third air duct member 260 is simplified, and the processing cost is reduced.

Of course, the air supply groove 264 may be provided inside the third duct member 260, so as to satisfy the air supply requirement. In addition, the air supply groove 264 may be formed into a larger volume, and a plurality of third air outlets 261 are provided, wherein the plurality of third air outlets 261 are arranged at the periphery of the air supply groove 264, thereby realizing multi-path air supply and being beneficial to improving the temperature uniformity in the variable temperature chamber 103.

In addition, a diaphragm plate 120 is arranged between the refrigerating chamber 101 and the temperature changing chamber 103, the diaphragm plate 120 plays a role in supporting and heat insulation, a third air duct piece 260 can be arranged in the diaphragm plate 120, and the temperature changing chamber 103 is provided with a through hole to be communicated with a third air outlet 261, so that cold air can be conveyed; or the third air duct member 260 serves as a part of the inner wall of the variable temperature chamber 103, and the third air outlet 261 may be directly connected with the variable temperature chamber 103.

It can be understood that referring to fig. 3 and 5, the lower end of the air duct housing 210 is provided with a third air return opening 213, the third air return opening 213 is arranged on the inner wall of the temperature changing chamber 103, and the third air return opening 213 is utilized to realize the communication between the heat exchanging cavity 201 and the temperature changing chamber 103, and the air in the temperature changing chamber 103 can flow back to the heat exchanging cavity 201. When the refrigerator is operated, air is driven to flow by the fan 220 of the air supply assembly 200, air in the variable temperature chamber 103 is sucked from the third air return opening 213, cold air is produced by the evaporator 230, and then the cold air is sent into the variable temperature chamber 103 for circulation refrigeration.

It can be understood that a first return air pipe 214 is disposed at the lower end of the air duct housing 210, the inlet end of the first return air pipe 214 extends to the inner wall of the temperature changing chamber 103 and forms a third return air port 213, and the outlet end of the first return air pipe 214 is communicated with the heat exchange cavity 201, so that the air in the temperature changing chamber 103 flows back to the heat exchange cavity 201. The first return air pipe 214 is obliquely arranged, and the inlet end of the first return air pipe 214 faces downwards, so that the third return air port 213 is relatively close to the bottom of the variable temperature chamber 103, is far away from the third air outlet 261, cold air is input into the variable temperature chamber 103 from the third air outlet 261, and needs to flow to the bottom of the variable temperature chamber 103 to be sucked away from the third return air port 213, thereby being beneficial to cold air contacting with articles stored in the variable temperature chamber 103, helping the articles to be cooled and improving the utilization rate of cold energy. In addition, the air duct housing 210 may be provided with a plurality of first return air pipes 214 to form a plurality of return air paths, so as to increase the air flow speed and speed up cooling.

Referring to fig. 2, a second return air port 212 is provided at a lower end of the air duct housing 210, the second return air port 212 is disposed at a sidewall of the freezing chamber 102 to communicate with the freezing chamber 102, and when the refrigerator is operated, air is driven to flow by a blower 220 of the air supply assembly 200, air in the freezing chamber 102 is sucked from the second return air port 212, cold air is produced by the evaporator 230, and then the cold air is fed into the freezing chamber 102 for circulation cooling.

Referring to fig. 4, in the heat exchange chamber 201, the evaporator 230 is located below the blower 220, and a return air chamber 202 is disposed below the evaporator 230, both the second return air inlet 212 and the third return air inlet 213 are connected to the return air chamber 202, return air sucked from the second return air inlet 212 and the third return air inlet 213 enters the return air chamber 202 first, then passes through the evaporator 230 to prepare cold air, and the blower 220 is used to convey the cold air, and the return air chamber 202 has an opening adapted to the evaporator 230, so that the return air is facilitated to diffuse and contact the whole evaporator 230, and the heat exchange efficiency is improved.

It can be appreciated that the air duct housing 210 may be provided with a side plate 280, where the side plate 280 is connected to a side meter of the air duct housing 210 and may be detached, and meanwhile, the side plate 280 is also a part of a side wall of the freezing chamber 102, and a plurality of air holes are provided at a lower end of the side plate 280, and are straight holes, and the plurality of air holes are closely arranged to form the second air return opening 212, and the second air return opening 212 has a larger fluid area for air to flow, so that flow resistance is reduced. The disassembly of the side plate 280 can repair and maintain the evaporator 230, thereby facilitating the operation.

Referring to fig. 1 and 3, a first air return port 211 is further provided at the top of the air duct housing 210, the first air return port 211 is located on the side wall of the refrigerating chamber 101 to communicate with the refrigerating chamber 101, and when the air supply assembly 200 operates, the fan 220 sucks air in the refrigerating chamber 101 from the first air return port 211, and cold air is produced by the evaporator 230 and then is input into the refrigerating chamber 101, thereby achieving the purpose of circulating cooling.

It will be appreciated that the first air return opening 211 and the first air duct member 240 are distributed on both sides of the second air duct member 250, and the distance between the first air return opening 211 and the first air duct member 240 is relatively large, which is beneficial for cold air flowing in the refrigerating chamber 101, so that the cold air contacts the articles stored in the refrigerating chamber 101, and improves the temperature uniformity inside the refrigerating chamber 101.

It will be appreciated that, since the first return air inlet 211 is located at the top of the air duct housing 210 and the return air chamber 202 is located at the bottom of the air duct housing 210, a return air passage 203 is provided inside the air duct housing 210, and the return air passage 203 is used to communicate the first return air inlet 211 with the return air chamber 202 to convey the air sucked from the first return air inlet 211 to the return air chamber 202. A separate pipe fitting can be adopted to obtain the return air channel 203, and a pipe fitting is arranged in the heat exchange cavity 201; alternatively, a baffle may be disposed on the side of the evaporator 230, and the baffle and the inner wall of the air duct housing 210 form the air return channel 203 to realize the delivery of the return air, where a small amount of air leakage from the baffle does not affect the performance, because the air leakage contacts the evaporator 230, the assembly requirement of the baffle is low, which is beneficial to reducing the cost.

Referring to fig. 1 and 3, a second return air duct 215 is further disposed on a side wall of the air duct housing 210, one end of the second return air duct 215 extends to a side wall of the refrigerating chamber 101 to communicate with the refrigerating chamber 101, the other end of the second return air duct 215 communicates with the return air channel 203, and the second return air duct 215 serves as auxiliary return air for the refrigerating chamber 101, and can also convey air in the refrigerating chamber 101 to the return air channel 203, and then enter the evaporator 230 through the return air chamber 202 to produce cold air.

As shown in fig. 7, the side-by-side refrigerator in the related art includes a cabinet 100, a first door and a second door 104, and the first door and the second door 104 provided in a side-by-side manner are respectively pivotably provided at the cabinet 100 to commonly open and close the respective refrigerating compartments. The first door is used to open and close the freezing chamber 102, and the second door 104 is used to open and close the refrigerating chamber 101 and the temperature changing chamber 103.

Referring to fig. 6 to 8, it may be understood that the refrigerator according to the embodiment of the present invention may further be provided with a third return duct 300, and the third return duct 300 is disposed in the second door 104. The air duct housing 210 is provided with a fourth air return opening 216 communicated with the air return cavity 202, and the fourth air return opening 216 is arranged on the inner wall of the temperature changing chamber 103, so that air can flow back to the heat exchange cavity 201. The fourth air return opening 216 is located at the lower end of the air duct housing 210, the third air return duct 300 is provided with a first opening 301 and a second opening 302, the first opening 301 and the second opening 302 are communicated, the first opening 301 is located above the second opening 302, the first opening 301 is communicated with the refrigerating chamber 101, and the second opening 302 is communicated with the fourth air return opening 216. When the refrigerator operates, air in the refrigerating chamber 101 is sucked into the return air chamber 202 through the first opening 301, the second opening 302 and the fourth return air opening 216 by driving the air flow through the fan 220, cold air is produced through the evaporator 230, and then the cold air is sent into the refrigerating chamber 101 through the first air outlet 241 for circulation. Through setting up the third return air pipe 300 in second door 104, will set up the return air subassembly at the back of box 100 originally and shift to in the second door 104 to reduce the required installation space in box 100 back, increase drawer depth, increase the volume of use.

Referring to fig. 6 to 8, it can be appreciated that the first duct member 240 is located at a side remote from the second door 104, and a large distance is provided between the third return duct 300 and the first duct member 240, which is advantageous for cold air to flow in the refrigerating compartment 101, so that the cold air contacts the articles stored in the refrigerating compartment 101, and the temperature uniformity inside the refrigerating compartment 101 is improved.

Referring to fig. 6, it can be understood that the third return air duct 300 is further provided with a third opening 303, the third opening 303 communicates with the variable temperature chamber 103, and the third opening 303 communicates with the fourth return air port 216. The third return air pipe 300 is pre-buried inside the second door 104, and under the action of the fan 220, the air in the refrigerating chamber 101 and the temperature changing chamber 103 can be collected through the third return air pipe 300 and enter the return air cavity 202 for circulation. The refrigerating chamber 101 and the temperature changing chamber 103 share the third return air pipe 300, so that space is saved, the installation space required by the third return air pipe 300 is reduced, and the space utilization rate is improved.

It will be appreciated that, although the third air outlet 261 and the third opening 303 are both disposed at the front side of the temperature changing chamber 103, the air outlet direction of the third air outlet 261 is towards the rear side of the temperature changing chamber 103, so that most of the air flows towards the rear side of the temperature changing chamber 103 to cool the food materials, and then returns to the third opening 303 to enter the third air return pipe 300.

Referring to fig. 6, it can be understood that the third return air duct 300 includes a straight pipe portion 310, a first bending portion 320, a second bending portion 330 and a third bending portion 340, wherein the first bending portion 320, the second bending portion 330 and the third bending portion 340 are all connected to the straight pipe portion 310, specifically, the first bending portion 320 is located at an upper end of the straight pipe portion 310 and is bent toward the refrigerating chamber 101, and the first opening 301 is provided at the first bending portion 320. The second bending portion 330 is located at the left side of the straight tube portion 310 and bends toward the temperature changing chamber 103, and the second opening 302 is provided at the second bending portion 330. The third bending portion 340 is located at the lower end of the straight tube portion 310 and bends toward the temperature changing chamber 103, and the third opening 303 is provided at the third bending portion 340. The straight tube portion 310 has a longer length, and the straight tube portion 310 may be disposed in the insulation layer of the second door 104, so as to reduce the loss of cold. The first bending portion 320, the second bending portion 330, and the third bending portion 340 have shorter lengths and are mainly used for penetrating through the insulation layer of the second door 104, so that the first opening 301, the second opening 302, and the third opening 303 can be communicated with corresponding structures.

Referring to fig. 8, it can be appreciated that the lower end of the duct housing 210 is provided with a fourth return duct 217, and the fourth return duct 217 passes through the insulation layer of the middle partition 110. One end of the fourth return air pipe 217 extends to the side wall of the temperature changing chamber 103, the other end of the fourth return air pipe 217 is communicated with the return air cavity 202, the fourth return air inlet 216 is formed in the fourth return air pipe 217, the end face, facing the second door body 104, of the fourth return air pipe 217 is flush with the side face of the middle partition plate 110, one end, facing the temperature changing chamber 103, of the third return air pipe 300 is in butt joint with the fourth return air pipe 217, accordingly the extending length of the third return air pipe 300 is small, and air leakage between the third return air pipe 300 and the fourth return air pipe 217 is reduced. A sealing ring can be arranged between the third return air pipe 300 and the fourth return air pipe 217, so that the tightness is further improved, the air leakage rate is reduced, for example, the sealing ring is arranged at the end face of the fourth return air pipe 217, when the second door 104 is closed, the end face of the third return air pipe 300 is abutted against the sealing ring, and when air flows from the third return air pipe 300 to the fourth return air pipe 217, the air is not easy to leak from the space between the third return air pipe 300 and the fourth return air pipe 217.

It will be appreciated that in other embodiments, a return air duct may be disposed in the first door body, and the return air duct functions similarly to the third return air duct 300, that is, is used to achieve return air in the door body, so as to reduce the installation space required by the back of the box 100, increase the depth of the drawer, and increase the usage volume.

Referring to fig. 3 and 4, the first air duct member 240 and the second air duct member 250 are arranged side by side and at the top of the air duct housing 210, a plurality of first air outlets 241 are provided at the side of the first air duct member 240 facing the refrigerating chamber 101, the plurality of first air outlets 241 are vertically spaced apart, a plurality of second air outlets 251 are provided at the side of the second air duct member 250 facing the freezing chamber 102, the plurality of second air outlets 251 are vertically spaced apart, the plurality of first air outlets 241 and the plurality of second air outlets 251 may be equally spaced apart, or may be non-equally spaced apart, and the sizes and shapes of the plurality of first air outlets 241 and the plurality of second air outlets 251 may be the same, or may be different, according to the modeling layout of the refrigerator.

Referring to fig. 4, the air supply assembly 200 further includes a fan housing 270, the fan housing 270 is disposed in the heat exchange cavity 201, and the fan housing 270 is disposed on the fan 220, and a first outlet and a second outlet are disposed on an upper end of the fan housing 270, wherein the first outlet is in communication with the first air duct member 240, and the second outlet is in communication with the second air duct member 250. When the fan 220 is operated, air is driven to flow, cold air is input into the first air channel piece 240 through the first outlet, and meanwhile, cold air is input into the second air channel piece 250 through the second outlet, so that cold air is split. The fan housing 270 is usually detachably connected to the air duct housing 210, and the fan 220 can be overhauled by removing the fan housing 270, so that the operation is convenient.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims (12)

1. A refrigerator, comprising:

the inner cavity of the box body is provided with a diaphragm plate and a vertical middle partition plate so as to form a first refrigeration compartment, a second refrigeration compartment and a third refrigeration compartment;

the air supply assembly is arranged in the middle partition plate and comprises an air duct shell with a heat exchange cavity, a fan and an evaporator are arranged in the heat exchange cavity, the top of the air duct shell is connected with a first air duct piece and a second air duct piece, the first air duct piece is provided with a first air outlet communicated with the first refrigeration compartment, the second air duct piece is provided with a second air outlet communicated with the second refrigeration compartment, the side face of the air duct shell is connected with a third air duct piece, the third air duct piece is provided with a third air outlet communicated with the third refrigeration compartment, the fan is used for supplying air to the first air duct piece, the second air duct piece and the third air duct piece, the inlet of the first air duct piece is provided with a first air door, and the inlet of the third air duct piece is provided with a second air door.

2. The refrigerator of claim 1, wherein the first air duct member and the second air duct member are arranged side by side at a top of the air duct housing, the first air duct member is provided with a plurality of first air outlets vertically spaced apart, the second air duct member is provided with a plurality of second air outlets vertically spaced apart.

3. The refrigerator according to claim 2, wherein a second air return port and a third air return port are provided at a lower end of the air duct housing, the second air return port is located at a side wall of the second refrigerating compartment, the third air return port is located at a side wall of the third refrigerating compartment, the evaporator is located below the blower, an air return cavity is formed below the evaporator, and the second air return port and the third air return port are communicated with the air return cavity.

4. The refrigerator of claim 3, wherein a first return air duct is provided at a lower end of the air duct housing, the first return air duct being disposed obliquely and directed downward, an inlet end of the first return air duct being located at a side wall of the third refrigerating compartment to form the third return air inlet, and an outlet end of the first return air duct being communicated with the return air chamber.

5. The refrigerator of claim 3, wherein a first return air inlet is formed in the top of the air duct housing, the first return air inlet is located on a side wall of the first refrigerating compartment, and the first return air inlet and the first air duct member are distributed on two sides of the second air duct member.

6. The refrigerator of claim 5, wherein a return air channel is formed in the air channel shell, an upper end of the return air channel is communicated with the first return air inlet, and a lower end of the return air channel is communicated with the return air cavity.

7. The refrigerator of claim 6, wherein a second return air duct is provided on a side wall of the air duct housing, one end of the second return air duct is communicated with a side wall of the first refrigeration compartment, and the other end of the second return air duct is communicated with the return air channel.

8. The refrigerator of claim 3, wherein the air duct housing is provided with a detachable side plate to open or close the heat exchange chamber, the side plate being a part of a side wall of the second refrigerating compartment.

9. The refrigerator of claim 8, wherein the lower end of the side plate is provided with a plurality of ventilation holes, and the plurality of ventilation holes are closely arranged to form the second return air inlet.

10. The refrigerator according to any one of claims 1 to 9, wherein the third air duct member is connected to a top wall of the third refrigerating compartment, an air supply groove is provided on a top surface of the third air duct member, one end of the air supply groove is communicated with the third air outlet, and the other end of the air supply groove is connected to the second air door.

11. The refrigerator of claim 10, wherein the third duct member is connected with a transfer tube, the second damper is disposed inside the transfer tube, and the transfer tube is fixedly connected to the duct housing and communicates with the heat exchange chamber.

12. The refrigerator of any one of claims 1 to 9, wherein the air supply assembly further comprises a fan housing positioned within the heat exchange cavity and housing the fan, the fan housing having a first outlet and a second outlet, the first outlet being in communication with the first air duct member and the second outlet being in communication with the second air duct member.

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