CN116379677A - Refrigerator with a refrigerator body - Google Patents

Abstract

The invention discloses a refrigerator, wherein a first compartment and a second compartment are respectively positioned at the left side and the right side of a middle partition plate; the air duct shell is provided with a heat exchange cavity and is respectively communicated with the first air duct piece and the second air duct piece, and the air duct shell and the first air duct piece are positioned in the middle partition plate; the first evaporator is positioned in the heat exchange cavity; the air door is positioned on the second air duct piece, and the second evaporator is used for refrigerating the second compartment in a direct cooling mode; wherein, the air outlet temperature of the second air outlet is less than the temperature of the second compartment. The air duct shell and the first air duct piece are arranged in the middle partition plate, so that the storage space can be increased. The first evaporator meets the refrigerating capacity requirement of the whole machine, the second evaporator meets the refrigerating capacity requirement of the second compartment, cold air at the main evaporator is blown to the second compartment for refrigerating by adjusting the air valve, water vapor is solidified into ice particles when encountering cold air with lower temperature, the humidity in the second compartment is reduced, the ice on the surface of the second evaporator is reduced, and automatic defrosting is realized.

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; the temperature change storage chamber (zero-degree storage chamber) of the drawer type is arranged in the refrigerating chamber of part of the refrigerator, the depth space is further compressed, the temperature range of the temperature change storage chamber is small, and the using effect is poor.

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 enlarge the storage space of the refrigerator and realize wide temperature change of the temperature changing chamber.

According to an embodiment of the invention, a refrigerator includes: the air conditioner comprises a box body, an air supply assembly, a first evaporator, a fan, an air door and a second evaporator, wherein a middle partition plate is arranged in the box body, a first compartment and a second compartment are formed in the box body, and the first compartment and the second compartment are respectively positioned at the left side and the right side of the middle partition plate; the air supply assembly comprises an air duct shell, a first air duct piece and a second air duct piece, wherein the air duct shell is provided with a heat exchange cavity and is respectively communicated with the first air duct piece and the second air duct piece, the first air duct piece is provided with a first air outlet communicated with the first compartment, the second air duct piece is provided with a second air outlet communicated with the second compartment, and the air duct shell and the first air duct piece are positioned in the middle partition plate; the first evaporator is positioned in the heat exchange cavity; the fan supplies air to the first air duct piece and the second air duct piece; the air door is positioned on the second air duct piece and is used for closing or opening the second air outlet; the second evaporator is used for refrigerating the second compartment in a direct cooling mode; the temperature of the air outlet at the second air outlet is smaller than that of the second compartment.

The refrigerator provided by the embodiment of the invention has at least the following beneficial effects: the air duct shell and the first air duct piece are arranged in the middle partition plate, so that the deep space of the refrigerator is not occupied, and the storage space is increased. The first evaporator is used as a main evaporator to meet the refrigerating capacity requirement of the whole machine, the second evaporator is added to be used as an auxiliary evaporator to meet the refrigerating capacity requirement of the second compartment, cold air at the main evaporator is blown into the second compartment to refrigerate by adjusting the air valve, cold air with lower temperature is blown into the second compartment, vapor in the second compartment is solidified into small ice particles when encountering the cold air with lower temperature, so that the humidity in the second compartment is very small, the freezing on the surface of the second evaporator is reduced, and automatic defrosting is realized.

According to some embodiments of the invention, the first compartment is a freezer compartment and the second compartment is a variable temperature compartment.

According to some embodiments of the invention, a third chamber is formed in the box, the third chamber and the second chamber are located on the same side of the middle partition, the air supply assembly further comprises a third air duct piece communicated with the air duct shell, the third air duct piece is provided with a third air outlet communicated with the third chamber, and the second air duct piece is located between the third chamber and the second chamber and located outside the middle partition.

According to some embodiments of the invention, the third air duct piece is located in the middle partition, the first air duct piece and the third air duct piece are arranged on the top of the air duct shell side by side along the front-back direction, the third air duct piece is provided with a plurality of third air outlets, the third air outlets are distributed at intervals in the vertical direction, the first air duct piece is provided with a plurality of first air outlets, and the first air outlets are distributed at intervals in the vertical direction.

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

According to some embodiments of the invention, a third air return port is arranged at the top of the air duct shell, the third air return port is positioned on the side wall of the third chamber, and the third air return port and the third air duct piece are distributed on the front side and the rear side of the first air duct piece.

According to some embodiments of the invention, a return air channel is formed inside the air channel shell, the upper end of the return air channel is communicated with the third 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, the refrigerator further comprises a fan cover, wherein the fan cover is positioned 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 third air duct piece.

According to some embodiments of the invention, the air duct housing is provided with a third outlet and an air guiding part, the second air duct member is provided with an air inlet communicated with the second air outlet, the air guiding part is used for guiding the air outlet at the third outlet to the air inlet, and the air door is positioned at the air inlet.

According to some embodiments of the invention, the second air outlet and the air inlet are respectively located at front and rear ends of the second air duct piece.

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 first 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 first air return opening.

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

Drawings

The invention is further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic view of a side-by-side combination refrigerator in the related art;

FIG. 2 is a cross-sectional view A-A shown in FIG. 1;

fig. 3 is a schematic view of a refrigerator according to an embodiment of the present invention;

FIG. 4 is a schematic view of a blower assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of another view of an air moving assembly according to an embodiment of the present invention;

fig. 6 is a schematic view of the refrigerator of fig. 3 from one view angle with the door omitted;

fig. 7 is a schematic view of the refrigerator of fig. 3 from another view angle after omitting a door body;

FIG. 8 is a schematic view of the air supply assembly of FIG. 7 after assembly of the temperature change bladder and the second evaporator;

fig. 9 is a schematic view of the blower assembly of fig. 7 after assembly with a second evaporator.

Reference numerals:

101. a case; 102. a first door body; 103. a second door body; 104. a freezing chamber; 105. a refrigerating chamber; 106. freezing an air outlet; 107. freezing an air return port; 108. refrigerating air outlet; 109. refrigerating the air return port; 110. a middle partition plate;

201. a refrigerating air duct member;

301. a temperature changing chamber; 302. a diaphragm;

401. an air duct housing; 402. a first air duct member; 403. a second air duct member; 404. a third air duct member; 405. a heat exchange cavity; 406. a blower; 407. a first evaporator; 408. a first air outlet; 409. a first damper; 410. a return air cavity; 411. a return air channel; 412. a second return air pipe; 413. a fan cover;

501. a third air outlet; 502. a second air outlet; 503. a second damper; 504. a third outlet; 505. an air guide part; 506. an air supply groove; 507. a second return air inlet; 508. a first return air pipe; 509. a third return air inlet;

701. a first return air inlet;

801. a second evaporator; 802. a temperature changing box liner.

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 references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, it can be understood that the side-by-side combination refrigerator of the related art includes a cabinet 101 having a refrigerating compartment therein, a first door 102 and a second door 103, which are respectively pivotably provided on the cabinet 101 to open and close the refrigerating compartment together, and left and right doors are provided side-by-side. Specifically, the refrigeration compartment includes a first cold compartment and a second cold compartment, which are partitioned by a middle partition plate 110, i.e., the middle partition plate 110 is disposed between the first cold compartment and the second cold compartment to partition the first cold compartment and the second cold compartment apart to ensure the refrigeration effect corresponding to the first cold compartment and the second cold compartment. The first door body 102 is pivotally connected to the case 101 and can close the first cooling chamber, the second door body 103 is pivotally connected to the case 101 and can close the second cooling chamber, and the second door body 103 and the first door body 102 are oppositely disposed in the left-right direction.

It is to be understood that the first cooling chamber and the second cooling chamber may be one of the freezing chamber 104, the refrigerating chamber 105 and the temperature changing chamber 301, and the first cooling chamber is taken as the freezing chamber 104, and the second cooling chamber is taken as the refrigerating chamber 105 for illustration.

Referring to fig. 1 and 2, it will be appreciated that the freezing and refrigerating duct members 201 and 201 are provided in the case 101, and the freezing and refrigerating duct members 201 and 201 are provided at the rear of the case 101, and the evaporator assembly is correspondingly provided at the rear of the case 101. The freezing air outlet 106 of the freezing air duct member 201 is located at an upper side of the rear portion of the freezing chamber 104, and the freezing air return 107 of the freezing air duct member 201 is located at a lower side of the rear portion of the freezing chamber 104. The refrigerating air outlet 108 of the refrigerating air duct part is located at an upper side of the rear portion of the refrigerating chamber 105, and the refrigerating air return opening 109 of the refrigerating air duct part is located at a lower side of the rear portion of the refrigerating chamber 105. The freezing duct member 201 and the refrigerating duct member are located in the back space of the cabinet 101, affecting the depth of the drawer. And the air cooled by the evaporator is blown from the rear of the case 101 to the front of the case 101, and when the food is stored more, the air quantity of the front of the case 101 is smaller, resulting in an increase in the temperature of the food in the front of the case 101.

Referring to fig. 3, it can be understood that the refrigerator according to the embodiment of the present invention includes a case 101 and a middle partition 110, a freezing chamber 104, a refrigerating chamber 105 and a temperature changing chamber 301 are provided in the case 101, the freezing chamber 104 is located at the left side of the middle partition 110, the refrigerating chamber 105 and the temperature changing chamber 301 are located at the right side of the middle partition 110, and the refrigerating chamber 105 is located above the temperature changing chamber 301.

It should be noted that, in the case 101, only two temperature areas of the freezing chamber 104 and the temperature changing chamber 301, or two temperature areas of the freezing chamber 104 and the refrigerating chamber 105, or four or more temperature areas may be provided.

Referring to fig. 4 and 5, it can be understood that the refrigerator is provided with a blowing assembly, and a portion of the blowing assembly is installed inside the middle partition 110, and the middle partition 110 has a certain thickness capable of accommodating a portion of the blowing assembly and the heat insulation layer. The air supply assemblies are also arranged vertically, depending on the shape of the intermediate partition 110. The air supply assembly comprises an air duct shell 401, a first air duct piece 402, a second air duct piece 403 and a third air duct piece 404, a heat exchange cavity 405 is formed in the air duct shell 401, a fan 406 and a first evaporator 407 are arranged in the heat exchange cavity 405, the first air duct piece 402 and the third air duct piece 404 are connected to the top of the air duct shell 401, and the second air duct piece 403 is connected to the side face of the air duct shell 401.

Referring to fig. 5 and 6, it can be appreciated that the side of the third air duct member 404 facing the refrigerating compartment 105 is provided with a third air outlet 501, and the third air outlet 501 communicates with the refrigerating compartment 105 to input cool air into the refrigerating compartment 105.

Referring to fig. 4 and 7, it can be appreciated that the side of the first air duct member 402 facing the freezing compartment 104 is provided with a first air outlet 408, and the first air outlet 408 communicates with the freezing compartment 104 to input cold air into the freezing compartment 104.

When the refrigerator operates, air is driven to flow through the fan 406, flows through the first evaporator 407, and absorbs heat by utilizing the refrigerant in the first evaporator 407 to prepare cold air, the cold air is input into the first air duct piece 402 and the third air duct piece 404, and then is input into the refrigerating chamber 105 from the third air outlet 501 and is input into the freezing chamber 104 from the first air outlet 408, so that the refrigerating chamber 105 and the freezing chamber 104 keep stable low temperature, and various articles and food materials are stored.

Referring to fig. 4, it can be understood that a first air door 409 is provided at the inlet of the third air duct member 404, and the flow rate of cold air inputted into the third air duct member 404 can be controlled through the first air door 409, thereby accurately controlling the temperature of the refrigerating compartment 105 according to the cold demand of the refrigerating compartment 105 and reducing the temperature fluctuation. The first air door 409 can also open or close the third air channel member 404, for example, when a large amount of cooling capacity is needed in the freezing chamber 104, the first air door 409 is used to close the third air channel member 404, so that cooling air is input into the freezing chamber 104, which is helpful for quickly reducing the temperature of the freezing chamber 104, and thus the purpose of quick freezing is achieved.

Referring to fig. 5, it can be understood that the second air duct member 403 is disposed on a side surface of the air duct housing 401, the second air duct member 403 is provided with a second air outlet 502, the second air outlet 502 is communicated with the temperature changing chamber 301, when the refrigerator operates, air is driven to flow through the fan 406, the air flows through the first evaporator 407, and the refrigerant in the first evaporator 407 is evaporated to absorb heat, so as to prepare cold air, the cold air is input into the second air duct member 403, and then is input into the temperature changing chamber 301 from the second air outlet 502, so that the temperature changing chamber 301 maintains stable low temperature, and various articles and food materials can be stored. The second air door 503 is arranged at the inlet of the second air duct member 403, and the second air door 503 is used for controlling the flow of cold air input into the second air duct member 403 and opening or closing the second air duct member 403, so that the temperature of the temperature changing chamber 301 can be changed, the temperature changing chamber 301 has a larger temperature adjusting range, and the use of a user is facilitated.

Referring to fig. 5, it may be understood that, in order to input cold air into the second air duct member 403, the air duct housing 401 is provided with a third outlet 504 and an air guiding portion 505, the air guiding portion 505 is fixedly connected to the air duct housing 401, two ends of the air guiding portion 505 are respectively connected to the second air duct member 403 and the heat exchange cavity 405, and the second air duct member 403 is provided with an air inlet connected to the second air outlet 502, so as to guide the air outlet at the third outlet 504 to the air inlet. And a second damper 503 is installed at the air inlet, and the flow rate of the cool air inputted into the second air duct member 403 is controlled by the second damper 503, and the second air duct member 403 is opened or closed.

It can be appreciated that the first air duct member 402, the second air duct member 403 and the third air duct member 404 are all communicated with the heat exchange cavity 405, and all the fans 406 deliver cold air, so that by providing the first air door 409 and the second air door 503, the temperatures of the refrigerating chamber 105, the freezing chamber 104 and the temperature changing chamber 301 can be controlled, and the temperature fluctuation range can be reduced. The first damper 409 and the second damper 503 are similar in structure and typically employ a motor to drive the rotation of the damper's valve plate to effect opening and closing and flow regulation. In addition, a damper may be provided at the inlet of the first duct member 402, and the refrigerating compartment 105, the freezing compartment 104, and the temperature changing compartment 301 may be independently controlled.

According to the refrigerator disclosed by the embodiment of the invention, the first air duct piece 402, the third air duct piece 404, the fan 406 and the first evaporator 407 are arranged in the middle partition plate 110, so that the depth space of the refrigerator is not occupied, the depth dimensions of the refrigerating chamber 105, the freezing chamber 104 and the temperature changing chamber 301 are increased, the storage space is increased, more objects can be accommodated, and the refrigerator is convenient to use. The fan 406 of the air supply assembly drives air to flow, cold air is prepared through the first evaporator 407, the cold air is split and enters the third air duct piece 404, the first air duct piece 402 and the second air duct piece 403, the cold air enters the refrigerating chamber 105 from the third air outlet 501 of the third air duct piece 404, the freezing chamber 104 from the first air outlet 408 of the first air duct piece 402 and the variable temperature chamber 301 from the second air outlet 502 of the second air duct piece 403, so that the cooling of the refrigerating chamber 105, the freezing chamber 104 and the variable temperature chamber 301 is realized, and the low-temperature environment is maintained.

Referring to fig. 6 and 7, it can be appreciated that the first air outlet 408 and the third air outlet 501 are located at the sides of the middle partition 110, and are close to the middle of the refrigerator, rather than the back of the refrigerator, i.e., the air outlet position is located at the middle of the refrigerating chamber 105 and the freezing chamber 104 in the depth direction, so that the air supply distance is reduced, which is helpful for improving the temperature uniformity of the refrigerating chamber 105 and the freezing chamber 104, and for storing various articles.

Referring to fig. 4 to 7, it may be understood that the first air duct member 402 and the third air duct member 404 are arranged side by side, and are arranged at the top of the air duct housing 401, a plurality of third air outlets 501 are disposed on a side surface of the third air duct member 404 facing the refrigerating chamber 105, the plurality of third air outlets 501 are vertically spaced, a plurality of first air outlets 408 are disposed on a side surface of the first air duct member 402 facing the freezing chamber 104, the plurality of first air outlets 408 are vertically spaced, the plurality of third air outlets 501 and the plurality of first air outlets 408 may be equally spaced, or may be non-equally spaced, and the sizes and shapes of the plurality of third air outlets 501 and the plurality of first air outlets 408 may be the same, or may be different, according to the modeling layout of the refrigerator.

Referring to fig. 5, it can be understood that the second air duct member 403 is disposed along the depth direction of the temperature changing chamber 301, that is, along the front-rear direction in the drawing, the second air outlet 502 is located at one end of the second air duct member 403 near the refrigeration door, the air inlet is located at one end of the second air duct member 403 far away from the refrigeration door, and the cold air blown out from the second air outlet 502 is near the refrigeration door, so that the diffusion of the cold air along the front-rear direction is facilitated, and the temperature of the temperature changing chamber 301 is more uniform throughout; in addition, the cold air also reduces the temperature of the second air channel member 403, and the low-temperature second air channel member 403 can help the air in the temperature changing chamber 301 to reduce the temperature, and the second air channel member 403 has a larger surface area, which helps to improve the uniformity of the temperature distribution in the temperature changing chamber 301.

Referring to fig. 5, it may be understood that, in order to convey cold air, an air supply groove 506 is disposed on the second air duct member 403, where the air supply groove 506 is used as a channel through which the cold air flows, one end of the air supply groove 506 is connected to the air inlet, and the other end of the air supply groove 506 is connected to the second air outlet 502, so as to convey the cold air from the heat exchange cavity 405 to the temperature changing chamber 301, and the second air outlet 502 may be disposed at various positions of the temperature changing chamber 301, so as to help to improve the temperature uniformity of the temperature changing chamber 301, and the air supply groove 506 extends to the second air outlet 502, thereby meeting the requirement of conveying the cold air.

It is to be appreciated that, considering that the second air duct member 403 is fixed on the top wall of the temperature changing chamber 301, the air supply groove 506 may be disposed on the top surface of the second air duct member 403, the second air duct member 403 is attached to the top wall of the temperature changing chamber 301, and the top wall of the temperature changing chamber 301 is utilized to seal the air supply groove 506 to prevent the leakage of cold air. The air supply groove 506 is an open groove, so that the structure of the second air duct member 403 is simplified, and the processing cost is reduced.

Of course, the air supply groove 506 may be provided inside the second duct member 403, so as to satisfy the air supply requirement. In addition, the air supply groove 506 may be formed into a larger volume, and a plurality of second air outlets 502 are provided, and the plurality of second air outlets 502 are arranged at the periphery of the air supply groove 506, so as to realize multi-path air supply, thereby being beneficial to improving the temperature uniformity in the temperature changing chamber 301.

In addition, a diaphragm plate 302 is arranged between the refrigerating chamber 105 and the temperature changing chamber 301, the diaphragm plate 302 plays a role in supporting and heat insulation, a second air duct piece 403 can be arranged in the diaphragm plate 302, and the temperature changing chamber 301 is provided with a through hole to be communicated with a second air outlet 502, so that cold air can be conveyed; or the second air duct member 403 serves as a part of the inner wall of the variable temperature chamber 301, and the second air outlet 502 may be directly connected to the variable temperature chamber 301.

Referring to fig. 4, it can be understood that, in the heat exchange cavity 405, the first evaporator 407 is located below the fan 406, and a return air cavity 410 is disposed below the first evaporator 407, and return air sucked from the refrigerating chamber 105, the freezing chamber 104 and the temperature changing chamber 301 enters the return air cavity 410 first, then passes through the first evaporator 407 to prepare cold air, and the fan 406 is used to convey the cold air, and the return air cavity 410 is provided with an opening adapted to the first evaporator 407, so that the return air is facilitated to diffuse and contact the whole first evaporator 407, and the heat exchange efficiency is improved.

Referring to fig. 4 and 7, it can be understood that a first return air port 701 is provided at a lower end of the air duct housing 401, the first return air port 701 is disposed at a sidewall of the freezing chamber 104 to communicate the return air chamber 410 with the freezing chamber 104, and when the refrigerator operates, air is driven to flow by a fan 406 of the air supply assembly, air in the freezing chamber 104 is sucked from the first return air port 701, cold air is produced by the first evaporator 407, and then the cold air is fed into the freezing chamber 104 to perform circulation refrigeration.

It can be appreciated that the air duct housing 401 may be provided with a side plate, where the side plate is connected to a side surface of the air duct housing 401 and may be detached, and meanwhile, the side plate is also a part of a side wall of the freezing chamber 104, and a plurality of air holes are provided at a lower end of the side plate, the air holes are straight holes, and the plurality of air holes are closely arranged to form the first air return port 701, and the first air return port 701 has a larger fluid area for air to flow, so that flow resistance is reduced. The side plate is disassembled, so that the first evaporator 407 can be overhauled and maintained, and the operation is convenient.

Referring to fig. 5 and 6, it can be understood that the lower end of the air duct housing 401 is provided with a second air return port 507, the second air return port 507 is communicated with the air return cavity 410, the second air return port 507 is arranged on the inner wall of the temperature changing chamber 301, the communication between the heat exchange cavity 405 and the temperature changing chamber 301 is realized by using the second air return port 507, and the air in the temperature changing chamber 301 can flow back to the heat exchange cavity 405. When the refrigerator operates, the fan 406 of the air supply assembly drives air to flow, air in the temperature changing chamber 301 is sucked from the second air return opening 507, cold air is prepared through the first evaporator 407, and then the cold air is sent into the temperature changing chamber 301 for circulating refrigeration.

It will be appreciated that a first return air duct 508 is provided at the lower end of the air duct housing 401, the first return air duct 508 being adapted to pass through the insulation of the intermediate partition 110. The inlet end of the first return air pipe 508 extends to the inner wall of the temperature changing chamber 301 and forms a second return air opening 507, and the outlet end of the first return air pipe 508 is communicated with the heat exchange cavity 405 so that air in the temperature changing chamber 301 can flow back to the heat exchange cavity 405. The first return air pipe 508 is obliquely arranged, and the inlet end of the first return air pipe 508 faces downwards, so that the second return air pipe 507 is closer to the bottom of the variable temperature chamber 301, and is far away from the second air outlet 502, cold air is input into the variable temperature chamber 301 from the second air outlet 502, and is sucked away from the second return air pipe 507 only when flowing to the bottom of the variable temperature chamber 301, thereby being beneficial to cold air contacting with articles stored in the variable temperature chamber 301, helping the articles to be cooled and improving the utilization rate of cold energy. In addition, the air duct housing 401 may be provided with a plurality of first return air pipes 508 to form a plurality of return air paths, so as to increase the air flow speed and speed up cooling.

Referring to fig. 5 and 6, it can be understood that a third air return port 509 is further provided at the top of the air duct housing 401, the third air return port 509 is located on a side wall of the refrigerating chamber 105 to communicate with the refrigerating chamber 105, and when the air supply assembly operates, the fan 406 sucks air in the refrigerating chamber 105 from the third air return port 509, and makes cold air through the first evaporator 407, and then inputs the cold air into the refrigerating chamber 105, so as to achieve the purpose of circularly cooling.

It will be appreciated that the third air return port 509 and the third air duct member 404 are disposed on the front and rear sides of the first air duct member 402, and that the distance between the third air return port 509 and the third air duct member 404 is relatively large, so that cold air can flow in the refrigerating chamber 105, contact the articles stored in the refrigerating chamber 105, and improve the temperature uniformity inside the refrigerating chamber 105.

It will be appreciated that, since the third air return port 509 is located at the top of the air duct housing 401 and the air return chamber 410 is located at the bottom of the air duct housing 401, an air return passage 411 is provided inside the air duct housing 401, and the third air return port 509 and the air return chamber 410 are communicated by the air return passage 411 to transfer air sucked from the third air return port 509 to the air return chamber 410. A separate tube may be used to obtain the return air channel 411, and a tube may be installed in the heat exchange cavity 405; or a baffle plate can be arranged at the side of the first evaporator 407, and the baffle plate and the inner wall of the air duct shell 401 form an air return channel 411 to realize the delivery of the return air, wherein even a small amount of air leakage of the baffle plate does not affect the performance, because the air leakage is in contact with the first evaporator 407, the assembly requirement of the baffle plate is lower, and the cost is reduced.

It will be appreciated that a second return air duct 412 is also provided at the top end of the air duct housing 401, the second return air duct 412 being configured to pass through the insulation layer of the intermediate partition 110. One end of the second return air pipe 412 extends to the side wall of the refrigerating chamber 105 to be communicated with the refrigerating chamber 105, the other end of the second return air pipe 412 is communicated with the return air channel 411, and the second return air pipe 412 can convey air in the refrigerating chamber 105 to the return air channel 411 and then enter the first evaporator 407 through the return air cavity 410 to prepare cold air.

Referring to fig. 4, it will be appreciated that the air supply assembly further includes a fan housing 413, the fan housing 413 being disposed in the heat exchange chamber 405, and the fan housing 413 being disposed in the fan 406, a first outlet and a second outlet being disposed at an upper end of the fan housing 413, the first outlet being in communication with the first air duct member 402, and the second outlet being in communication with the third air duct member 404. When the fan 406 operates, air is driven to flow, cold air is input into the first air channel piece 402 through the first outlet, and meanwhile, cold air is input into the third air channel piece 404 through the second outlet, so that cold air is split. The fan housing 413 is usually detachably connected with the air duct housing 401, and the fan 406 can be overhauled by detaching the fan housing 413, so that the operation is convenient.

Referring to fig. 8 and 9, it can be appreciated that the refrigerator according to the embodiment of the present invention further includes a second evaporator 801 and a temperature changing tank container 802, and the temperature changing tank container 802 is disposed in the case 101 to define the temperature changing compartment 301. The second evaporator 801 is attached to the temperature changing tank container 802, exchanges heat with the temperature changing tank container 802, and refrigerates the temperature changing chamber 301 in a direct cooling mode. The second evaporator 801 may be selected from a plate tube evaporator, a microchannel evaporator, and the like. And, the air outlet temperature at second air outlet 502 is less than the temperature of temperature changing chamber 301, so that the water vapor in temperature changing chamber 301 is solidified, and the humidity is reduced.

It can be understood that the first evaporator 407 is used as a main evaporator to meet the cooling capacity requirement of the whole machine, the second evaporator 801 is used as a secondary evaporator to meet the cooling capacity requirement of the temperature changing chamber 301, and by adjusting the second air door 503, cold air at the first evaporator 407 is blown into the temperature changing chamber 301, cold air with lower temperature is blown into the temperature changing chamber 301, and water vapor in the temperature changing chamber 301 encounters cold air with lower temperature to solidify into small ice particles, so that the humidity in the temperature changing chamber 301 is very small, and the freezing at the position of the second evaporator 801 is reduced, thereby realizing automatic defrosting.

It can be appreciated that the refrigerator has the following operating states: when the second air door 503 is closed, no cold air is blown out from the second air outlet 502, and at this time, the temperature changing chamber 301 is cooled by the second evaporator 801. When the second air door 503 is opened, cold air is blown out from the second air outlet 502, and enters the temperature changing chamber 301, so that the humidity of the temperature changing chamber 301 is reduced by solidifying the moisture in the temperature changing chamber 301, and further, the icing on the surface of the second evaporator 801 is reduced.

It is understood that the control method of the refrigerator includes, but is not limited to, step S110 and step S120.

In step S110, the second damper 503 is closed and the second evaporator 801 is started.

During normal operation, second evaporator 801 is started to directly provide cold to temperature change chamber 301, so that food materials in temperature change chamber 301 are stored in a low temperature environment. Since the second air door 503 is closed, cold air can be intensively input into the freezing chamber 104, which is helpful for rapidly reducing the temperature of the freezing chamber 104, and achieving the purpose of rapid freezing.

In step S120, the second damper 503 is opened, and the first evaporator 407 and the blower 406 are started.

The fan 406 drives air to flow, the air flows through the first evaporator 407, the refrigerant in the first evaporator 407 is utilized to evaporate to absorb heat, cold air is produced and is input into the second air duct piece 403, then is input into the temperature changing chamber 301 from the second air outlet 502, the temperature of the cold air is lower than the temperature in the temperature changing chamber 301, so that water vapor in the temperature changing chamber 301 is solidified into small ice particles, the humidity in the temperature changing chamber 301 is reduced, freezing corresponding to the position of the second evaporator 801 is further reduced, and the pain point of the direct-cooling refrigerator, which needs manual defrosting, is overcome.

It should be noted that, in other embodiments, the second evaporator 801 may also be used to meet the refrigeration requirement of the refrigerating chamber 105, where the vapor in the refrigerating chamber 105 may be solidified into small ice particles when encountering cold air with a lower temperature, so as to reduce the ice formation on the surface of the second evaporator 801, and realize automatic defrosting.

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 box body is internally provided with a middle partition board, a first compartment and a second compartment are formed in the box body, and the first compartment and the second compartment are respectively positioned at the left side and the right side of the middle partition board;

the air supply assembly comprises an air duct shell, a first air duct piece and a second air duct piece, wherein the air duct shell is provided with a heat exchange cavity and is respectively communicated with the first air duct piece and the second air duct piece, the first air duct piece is provided with a first air outlet communicated with the first compartment, the second air duct piece is provided with a second air outlet communicated with the second compartment, and the air duct shell and the first air duct piece are positioned in the middle partition plate;

the first evaporator is positioned in the heat exchange cavity;

the fan supplies air to the first air duct piece and the second air duct piece;

the air door is positioned on the second air duct piece and is used for closing or opening the second air outlet;

the second evaporator is used for refrigerating the second compartment in a direct cooling mode;

the temperature of the air outlet at the second air outlet is smaller than that of the second compartment.

2. The refrigerator of claim 1, wherein the first compartment is a freezing compartment and the second compartment is a temperature changing compartment.

3. The refrigerator of claim 1, wherein a third compartment is formed in the refrigerator body, the third compartment and the second compartment are located on the same side of the middle partition, the air supply assembly further comprises a third air duct member communicated with the air duct housing, the third air duct member is provided with a third air outlet communicated with the third compartment, and the second air duct member is located between the third compartment and the second compartment and outside the middle partition.

4. The refrigerator of claim 3, wherein the third air duct member is located in the middle partition, the first air duct member and the third air duct member are arranged side by side at the top of the air duct housing in the front-rear direction, the third air duct member is provided with a plurality of third air outlets, the third air outlets are vertically spaced apart, the first air duct member is provided with a plurality of first air outlets, and the first air outlets are vertically spaced apart.

5. The refrigerator of claim 4, wherein a first air return port and a second air return port are formed in the lower end of the air duct housing, the first air return port is located on the side wall of the first compartment, the second air return port is located on the side wall of the second compartment, the first evaporator is located below the fan, an air return cavity is formed in the lower portion of the first evaporator, and the first air return port and the second air return port are communicated with the air return cavity.

6. The refrigerator of claim 5, wherein a third return air inlet is formed in the top of the air duct housing, the third return air inlet is formed in the side wall of the third compartment, and the third return air inlet and the third air duct member are distributed on the front side and the rear side of the first air duct member.

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

8. The refrigerator of claim 3, further comprising 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 duct member and the second outlet being in communication with the third duct member.

9. The refrigerator according to claim 3, wherein the air duct housing is provided with a third outlet and an air guiding portion, the second air duct member is provided with an air inlet communicating with the second air outlet, the air guiding portion is used for guiding air out of the third outlet to the air inlet, and the air door is located at the air inlet.

10. The refrigerator of claim 9, wherein the second air outlet and the air inlet are respectively located at front and rear ends of the second air duct member.

11. The refrigerator of claim 1, 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 first compartment.

12. The refrigerator of claim 11, 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 first return air inlet.

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