WO2018205516A1 - Air duct assembly - Google Patents

Abstract

Disclosed are a refrigerator chamber air duct assembly and a refrigerating device, wherein the refrigerator chamber air duct assembly comprises: an air duct housing assembly (10); an air duct frame assembly (20), cooperatively assembled with the air duct housing assembly (10) to cooperatively form a sealed refrigeration cavity, the air duct frame assembly (20) comprising an air duct partition plate (202) provided in the air intake direction, the air duct partition plate (202) dividing the sealed refrigeration cavity into an air intake channel and a heat-exchange channel, the air duct partition plate (202) being provided with at least one air exchange opening (2022) making the air intake channel communicate with the heat-exchange channel; an air inlet (204) correspondingly provided at the bottom of the air intake channel to make a refrigerant gas enter into the air intake channel in the air intake direction; and a return air opening (102) provided in the region of the heat-exchange channel on the air duct housing assembly (10).The refrigerant gas that enters the air intake channel is introduced into the heat-exchange channel by means of the air exchange opening (2022), and after completing heat exchange with the refrigerator chamber in the heat-exchange channel, is discharged from the air return opening (102). The refrigerating device achieves the refrigeration function of a single system, and can ensure a high humidity environment inside the refrigerator chamber itself.

Description

Air duct component

cross reference

This application cites the Chinese Patent Application No. 201710331544X, filed on May 11, 2017, entitled "A Air Duct Device and Refrigerator", and the patent name submitted on July 17, 2017 as "Refrigerator Room Air Duct" The Chinese Patent Application No. 2017105791652, the entire disclosure of which is incorporated herein by reference.

Technical field

The present invention relates to the field of household appliances, and in particular to a refrigerating compartment duct assembly and a refrigerator.

Background technique

In recent years, frost-free refrigerators have become more and more popular because of the advantages of automatic defrosting, uniform cooling and accurate temperature. Generally, the frost-free refrigerator adopts the air-cooled design. The principle of the air-cooled refrigerator is to use the cold air forced circulation type to cool. When the air flows through the built-in evaporator and is separated from the inner wall of the refrigerator, the air temperature is high and the evaporator temperature is low. The heat exchange occurs directly, the temperature of the air is lowered, and the cold air is blown into the refrigerator. Air-cooled refrigerators use this constant circulation to reduce the temperature of the refrigerator.

The existing air-cooled refrigerator, because the air inside the refrigerator is cooled by the evaporator and then enters the refrigerating room to cool the air in the refrigerating room, and when the air inside the refrigerator passes through the evaporator, the humidity of the air in the refrigerator is lowered due to frosting. Some foods are easily dehydrated if they are not isolated with plastic wrap or crisper, and even dehydrated and dried fruits and vegetables are not conducive to food preservation in the refrigerated room. At present, the problem of low humidity in the air-cooled refrigerator compartment is mainly due to the multi-system design, but the refrigerator system is complicated and costly, and cannot effectively maintain the proper humidity range in the refrigerator compartment.

Summary of the invention

(1) Technical problems to be solved

The object of the present invention is to provide a duct assembly and a refrigerator to solve the problem in the existing air-cooled refrigerator. The problem of low humidity.

(2) Technical plan

In order to solve the above technical problems, the present invention provides a refrigerating compartment air duct assembly, comprising:

Air duct housing assembly;

a duct frame assembly that is assembled with the air duct housing assembly to cooperate to form a closed refrigerating chamber, the duct frame assembly including a duct partition disposed along an air inlet direction, the duct partition The closed refrigerating chamber is divided into an air inlet passage and a heat exchange passage, and the air passage partition defines at least one air exchange port that communicates the air inlet passage and the heat exchange passage;

The air inlet is correspondingly opened at the bottom of the air inlet passage, so that the refrigerant gas enters the air inlet passage along the air inlet direction;

a return air opening, which is opened in an area of the heat exchange passage on the air duct housing assembly,

The refrigerant gas entering the air inlet passage is introduced into the heat exchange passage through the air exchange port, and is exhausted from the air return port after the heat exchange is completed in the heat exchange passage.

Further, when there are multiple air exchange ports, the air duct frame assembly further includes:

a plurality of heat exchange partitions are arranged side by side in the heat exchange passage along the air inlet direction to partition the heat exchange passages into a plurality of heat exchange subchannels, each of the heat exchange subchannels corresponding to The air exchange port has one end attached to and connected to the air duct partition, and the heat exchange partition is further provided with a notch portion.

The refrigerant gas enters the heat exchange sub-channel through the air exchange port, and returns to the air return port through the notch portion after the heat exchange is completed.

Further, the notch portion is disposed at the other end of the heat exchange partition, and the plurality of notch portions are disposed correspondingly one by one along the air inlet direction to form a straight return air passage to complete heat exchange. The refrigerant gas flows along the return air passage to the return air vent.

Further, the air duct housing assembly includes:

a duct backing plate assembled with the air duct frame assembly;

a duct cover, respectively assembled with the air duct frame assembly and the duct back plate to form the closed refrigerating cavity;

The return air opening is disposed on the air passage back plate of the heat exchange sub-channel forming the lowermost end.

Further, the number of the air passage partitions is two, and is oppositely disposed to be in the air inlet The heat exchange channels are formed on both sides of the channel.

Further, a duct baffle is further disposed between the air inlet channel and the air duct cover, and a gap between the air duct baffle and the air duct cover is filled with an insulating material.

Further, the size of the notch portion near the air return opening is larger than the size of the notch portion away from the air return opening.

Further, the air duct backboard is a tank, the air duct cover is disposed on an inner side surface of the tank, and the air duct back board is provided with a water absorbing material toward a side surface of the refrigerator compartment.

Further, the air duct frame assembly further includes:

a circumferential frame, respectively, circumferentially engaging the air duct backing plate and the air duct cover to circumferentially close the closed cooling cavity;

The air duct cover is provided with a circumferential flange portion, and a plurality of claw structures are respectively disposed on the circumferential flange portion;

a plurality of card slot structures are correspondingly arranged on the circumferential frame,

The assembly of the air duct cover and the circumferential frame is achieved by the plurality of claw structures engaging with the plurality of card slot structures.

In the air duct assembly provided by the present invention, the refrigerating chamber air duct assembly includes a duct housing assembly and a duct frame assembly, and a closed refrigerating chamber is formed by assembling, and a duct partition and a duct are disposed in the closed refrigerating chamber. The partition divides the closed refrigeration chamber into an air inlet passage and a heat exchange passage, and realizes communication between the inlet air passage and the heat exchange passage by opening a air exchange opening on the air passage partition, and the refrigerant gas enters the air inlet passage from the air inlet After that, the heat exchange channel is introduced through the air exchange port, and the refrigerant gas exchanges heat with the refrigerating chamber in the heat exchange channel to achieve refrigeration of the refrigerating chamber. After the heat exchange is completed, the temperature of the refrigerant gas rises, and is discharged from the return air outlet. Compared with the prior art, the refrigeration room and the freezer compartment can share a single evaporator, realize a single system refrigeration function, simple structure setting, low preparation cost, and on the other hand, through heat exchange. The way of cooling the refrigerating compartment does not affect the humidity in the refrigerating compartment, that is, it can maintain the high-humidity environment of the refrigerating compartment itself, thereby improving the user experience.

In another aspect, the present invention also provides a refrigerator including a refrigerating compartment, and any one of the refrigerating compartment duct assemblies described above, the refrigerating compartment duct assembly being disposed corresponding to the refrigerating compartment.

The refrigerator provided by the present invention is provided with any of the above-described refrigerating compartment air duct assemblies, and therefore the refrigerator has all the beneficial effects of any of the above-described refrigerating chamber duct assemblies, and is not here. Said.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic view showing the assembly structure of a refrigerating compartment air duct assembly according to an embodiment of the present invention;

2 is a schematic view showing an exploded structure of a refrigerating compartment air duct assembly according to an embodiment of the present invention;

Figure 3 is a schematic view showing the structure of the air duct frame assembly of Figure 2;

Figure 4 is a schematic illustration of a duct assembly in accordance with one embodiment of the present invention;

Figure 5 is a schematic illustration of a duct assembly in accordance with one embodiment of the present invention;

Figure 6 is a schematic illustration of a cross-sectional structure of a duct device in accordance with one embodiment of the present invention;

Figure 7 is a schematic illustration of a cross-sectional structure of a duct device in accordance with one embodiment of the present invention.

In the picture:

1 air duct baffle, 10 air duct shell assembly, 11 water absorbing material, 12 thermal insulation material, 20 air duct frame assembly, 202 air duct partition, 2022 air change port, 204 air inlet, 102 air return port, 206 heat exchange partition , 2062 notch, 104 duct back, 106 duct cover, 208 circumferential frame, 210 rectangular raised, 212 air shield, 1062 jaws.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

A refrigerating compartment air duct assembly according to some embodiments of the present invention will now be described with reference to FIGS. 1 through 3.

As shown in FIG. 1 to FIG. 3, a refrigerating compartment air duct assembly according to an embodiment of the present invention includes: a duct housing assembly 10; a duct frame assembly 20 that is assembled with the duct housing assembly 10 to cooperate to form Closing the refrigeration chamber, the air duct frame assembly 20 includes air duct partitions disposed along the air inlet direction 202, the air duct partition 202 divides the closed refrigeration chamber into an air inlet passage and a heat exchange passage, and at least one air exchange port 2022 that communicates the air inlet passage and the heat exchange passage is formed on the air passage partition 202; the air inlet 204 is opened correspondingly At the bottom of the air inlet passage, the refrigerant gas enters the air inlet passage along the air inlet direction; the air return port 102 is opened in the region of the heat exchange passage on the air duct housing assembly 10, wherein the refrigerant gas entering the air inlet passage is Through the air exchange port 2022, the heat exchange passage is introduced, and after the heat exchange is completed in the heat exchange passage and the refrigerating chamber, the air is discharged from the air return port 102.

Wherein, the refrigerating compartment air duct assembly comprises a duct housing assembly 10 and a duct frame assembly 20, and a closed refrigerating chamber is formed by assembling, and a duct partition 202 is disposed in the closed refrigerating chamber, and the duct partition 202 is closed and cooled. The cavity is divided into an air inlet channel and a heat exchange channel, and the air inlet channel and the heat exchange channel are connected by opening a air exchange port 2022 on the air channel partition 202. After the refrigerant gas enters the air inlet channel from the air inlet 204, The heat exchange channel is introduced through the air exchange port 2022, and the refrigerant gas exchanges heat with the refrigerating chamber in the heat exchange channel to achieve refrigeration of the refrigerating chamber. After the heat exchange is completed, the temperature of the refrigerant gas rises, and after being discharged from the return air port 102, The refrigeration of the refrigerating compartment is completed. On the one hand, the refrigerating compartment and the freezing compartment can share an evaporator, thereby realizing the cooling function of the single system, the structure setting is simple, the preparation cost is low, and on the other hand, the replacement is performed. The hot way to cool the refrigerating compartment does not affect the humidity in the refrigerating compartment, that is, it can maintain the high-humidity environment of the refrigerating compartment itself, and enhance the user experience.

The manner of generating the closed cooling cavity includes, but is not limited to, the following embodiments:

The enclosed refrigeration chamber can be enclosed by the air duct housing assembly 10 alone;

It is also possible to form a closed refrigerating cavity by the air duct housing assembly 10 and the air duct frame assembly 20, that is, the front and rear seals are realized by the air duct housing assembly 10, and the lateral seal is realized by the air duct frame assembly 20;

The air duct partition 202 is used to divide the closed cooling chamber into an air inlet passage and a heat exchange passage, including but not limited to the following embodiments:

The air duct partition 202 may be disposed perpendicular to the panel of the air duct housing assembly 10, and when vertically disposed, the air duct partition 202 and the side wall of the closed refrigeration chamber (which may be components of the air duct frame assembly 20, or The components of the duct housing assembly 10 are arranged in parallel, wherein the cross section of the air inlet passage is much smaller than the cross section of the heat exchange passage;

It may also be arranged in parallel with the panel of the duct casing assembly 10. When arranged in parallel, the inlet duct is disposed on a side away from the refrigerating compartment, and the heat exchange passage is disposed on a side close to the refrigerating compartment.

The arrangement of the air exchange port 2022 includes, but is not limited to, the following embodiments:

Wherein, the air exchange port 2022 can be formed directly on the air duct partition 202;

It may also be formed by enclosing one end of the duct spacer 202 with the duct frame assembly 20 at the end.

In addition, by providing the air duct partition 202, it is also advantageous to increase the overall strength of the air duct assembly.

In addition, the refrigerating compartment air duct assembly in the above embodiments provided by the present invention may further have the following additional technical features:

As shown in FIG. 2 and FIG. 3, preferably, when there are a plurality of air exchange ports 2022, the air duct frame assembly 20 further includes: a plurality of heat exchange partitions 206 arranged side by side in the heat exchange passage in the air inlet direction. The heat exchange channels are divided into a plurality of heat exchange sub-channels, each heat exchange sub-channel corresponding to the air exchange port 2022, and one end of the heat exchange partition 206 is attached and connected to the air duct partition 202, and the heat exchange partition 206 is further A notch portion 2062 is disposed, wherein the refrigerant gas enters the heat exchange sub-channel through the air exchange port 2022, and returns to the return air port 102 through the notch portion 2062 after the heat exchange is completed.

By arranging a plurality of heat exchange partitions 206 side by side in the air inlet direction in the heat exchange passage, the heat exchange passages are divided into a plurality of heat exchange sub-channels having a specified angle with the inlet air direction, two adjacent At least one air exchange port 2022 is disposed between the heat exchange partitions 206, so that the refrigerant gas entering the air inlet passages enters the heat exchange subchannel through the corresponding air exchange ports 2022, and the heat is exchanged in the heat exchange subchannel. By providing the notch portion 2062 on the heat exchange partition 206, the recirculation of the refrigerant gas after the heat exchange is completed is realized. On the one hand, by providing a plurality of heat exchange sub-channels, the heat exchange efficiency is improved, and on the other hand, The notch portion 2062 is provided to realize gas return, and the return air structure is simple.

The arrangement of the heat exchange partition 206 includes, but is not limited to, the following settings:

The heat exchange partition 206 may be disposed perpendicular to the air duct partition 202;

It can also have an acute angle setting, and when it has an acute angle, the acute angle usually does not exceed 45°;

It can also have an obtuse angle setting, and when there is an obtuse angle, the obtuse angle usually does not exceed 135°.

For the notch portion 2062, when there are a plurality of heat exchange partitions 206, the positions of the notch portions 2062 provided on each of the heat exchange partitions 206 may be the same or different, and the preferred notch portions 2062 are disposed away from the air passage partition. The position of the board 202.

Preferably, the notch portion 2062 is opened at the other end of the heat exchange partition 206, and the plurality of notch portions 2062 are correspondingly arranged one by one in the air inlet direction to form a straight return air passage to complete the heat exchange refrigeration. The gas flows along the return air passage to the return air port 102.

By providing the notch portion 2062 on the heat exchange partition 206 at one end of the heat exchange partition 206, and the plurality of notch portions 2062 are corresponding one by one in the air inlet direction, a straight return air passage is formed, and on the one hand, The heat exchange baffles 206 have the same structure and are convenient for preparation. On the other hand, by forming a straight return air passage, the refrigerating air flows more smoothly during the circulation process, which is beneficial to improve the cooling efficiency.

Specifically, the notch portion 2062 disposed at one end of the heat exchange partition 206 may be formed by cutting the end portion of the heat exchange partition 206, or may directly adopt the heat exchange partition 206 having a length smaller than the width of the closed refrigerant chamber. The above two structural modes can also be combined to further improve the reflow efficiency.

Preferably, the air duct housing assembly 10 includes: a duct back plate 104 that is assembled with the air duct frame assembly 20; and an air duct cover 106 that is assembled with the air duct frame assembly 20 and the air duct back plate 104 to form Close the refrigeration chamber.

By arranging the air duct housing assembly 10 as the air duct backing plate 104 and the air duct cover 106 to cooperate with the air duct frame assembly 20 to form a closed refrigerating cavity, wherein the air duct cover 106 is disposed opposite to the refrigerating chamber, the wind The road back plate 104 is disposed opposite to the refrigerating chamber. On the one hand, the air conditioning cover plate 106 is used as a heat exchange medium to achieve cooling of the refrigerating chamber, and on the other hand, through the air duct back plate 104 and the air duct cover 106. The air duct frame assembly 20 is cooperatively arranged to enable sealing of the closed refrigerating chamber and reduce the probability of the refrigerant gas carrying away moisture from the refrigerating chamber.

The air duct cover 106 may be provided in an integrated structure or may be assembled from a plurality of boards.

The air duct backing plate 104 may be provided in a one-piece structure or may be assembled from a plurality of boards.

Preferably, the duct frame assembly 20 further includes a circumferential frame 208 that circumferentially mates with the duct backing plate 104 and the duct cover 106, respectively, to circumferentially close the enclosed refrigerating chamber.

By providing the circumferential frame 208 in cooperation with the air duct backing plate 104 and the air duct cover 106, respectively, on the one hand, the circumferential sealing of the closed refrigerating cavity is realized, and on the other hand, the whole of the refrigerating compartment air duct assembly is further improved. Strength to increase the service life of the duct assembly.

Preferably, the air duct backing plate 104 and the air duct cover 106 are respectively corresponding L-shaped back plates and L-shaped cover plates, and the circumferential frame 208 is a corresponding L-shaped frame to cooperate with forming an L-shaped closed cooling cavity. The L-shaped closed refrigerating cavity comprises a longitudinal first cavity and a horizontal second cavity; The plate 202 is an L-shaped partition plate and is respectively engaged with the inner wall of the L-shaped back plate and the inner wall of the L-shaped cover plate to partition the first cavity into a first air inlet passage from the bottom to the top in the air inlet direction. And a plurality of first heat exchange sub-channels arranged side by side from one end to the other end, and the second chamber is divided into a second air inlet passage from the rear to the front in the air inlet direction, and from the one end to the other end a plurality of horizontal heat exchange channels arranged side by side, wherein the first cavity is correspondingly disposed on the back of the refrigerator compartment, the second cavity is correspondingly disposed on the top of the refrigerator compartment, and the air duct cover 106 is disposed corresponding to the refrigerator compartment to The refrigerating compartment is cooled by heat exchange with the refrigerant gas.

By arranging the air duct backing plate 104 and the air duct cover 106 to respectively corresponding L-shaped back plates and L-shaped cover plates, the circumferential frame 208 is disposed as a corresponding L-shaped frame, and the closed cooling cavity is enclosed and formed by The L-shaped cavity formed by the first cavity and the second cavity divides the first cavity into the first cavity by arranging the air channel partition 202 to fit the inner wall of the L-shaped back plate and the inner wall of the L-shaped cover plate An air inlet passage and a first heat exchange sub-channel, and the second cavity is divided into a second air inlet passage and a second heat exchange sub-channel, wherein the air inlet 204 is disposed at the bottom of the first cavity to enable cooling After entering the cavity from the air inlet 204, the gas is first introduced upward along the first air inlet passage. While conducting upward, part of the refrigerant gas enters the first heat exchange subchannel through the air exchange port 2022, and after introducing the second air inlet passage, the wind direction From the bottom to the top, the horizontal direction is changed from the back to the front. At the same time, the air guide enters the second heat exchange sub-channel through the heat exchange port, and flows between the heat transfer sub-channel and the air passage cover 106. It realizes the refrigeration from the back and the top to the refrigerating compartment separately, without affecting the humidity in the refrigerating room. At the same time, the cooling efficiency of the refrigerator compartment is improved.

The first air inlet channel is in communication with the second air inlet channel.

In addition, the air inlet 204 may be separately provided for the first cavity and the second cavity to operate the first cavity and the second cavity relatively independently.

Further, it is also possible to extend the closed refrigerating chamber to both sides of the refrigerating chamber, respectively.

Preferably, the bottom surface of the front end of the second cavity is provided with a rectangular convex portion 210 to form a heat exchange sub-channel on both sides of the rectangular convex portion 210.

By providing a rectangular convex portion 210 on the bottom surface of the front end of the second cavity, a heat exchange sub-channel is formed on both sides of the rectangular convex portion 210, and gas flow at the end portion is realized.

Preferably, the air inlet 204 is circumferentially provided with an air inlet shield 212; the air outlet is disposed on the air duct backing plate 104 forming the lowermost heat exchange sub-channel.

The gas leakage at the air inlet 204 is prevented by providing the air inlet shield 212 at the air inlet 204. Leakage, by providing the air outlet to the air duct backing plate 104 of the lowermost heat exchange sub-channel, the heat exchange efficiency can be maximized.

Preferably, the air duct cover 106 is provided with a circumferential flange portion, and a plurality of claws 1062 are respectively disposed on the circumferential flange portion; a plurality of card slot structures are correspondingly arranged on the circumferential frame 208, wherein the plurality of cards are passed through The jaws 1062 are configured to cooperate with a plurality of card slot structures to effect assembly of the air duct cover 106 and the circumferential frame 208.

By providing a circumferential flange portion on the air duct cover 106, on the one hand, it is advantageous to increase the strength of the air duct cover 106, and on the other hand, by providing a structure of the claw 1062 on the circumferential flange portion, in the corresponding circumference. A card slot is provided on the frame 208, and the claw 1062 is engaged with the card slot to realize assembly of the air duct cover 106 and the circumferential frame 208, and the assembly method is simple and the reliability is high.

In addition, assembly can also be achieved by welding.

Preferably, the air duct cover 106 is a high thermal conductivity metal plate; the air duct back plate 104 is a high heat insulation plate.

By providing the air duct cover 106 as a high thermal conductivity metal plate, the air duct back plate 104 is disposed as a high heat insulation plate, on the one hand, the efficiency of heat conduction through the air duct cover 106 is improved, that is, the cooling efficiency is improved. On the other hand, the probability that the heat carried by the refrigerant gas is transmitted to the outside through the duct back plate 104 is reduced, which is also advantageous for improving the cooling efficiency.

Specifically, the high thermal conductive metal plate may be a copper alloy plate or an aluminum alloy plate, and the high heat insulating property may be a fiberboard or the like.

Preferably, the refrigerating compartment air duct assembly further includes: an air inlet damper disposed at the air inlet 204, and when the air inlet damper is opened, the air inlet 204 communicates with a freezing chamber disposed below the refrigerating chamber to be transported through the freezing chamber The refrigerant gas; the return air pipe, one end of the return air pipe is connected to the return air port 102, and the other end of the return air pipe extends to the heat exchange cavity of the evaporator, wherein the evaporator is arranged corresponding to the freezing chamber.

By providing an air inlet damper at the air inlet 204, when the air inlet damper is opened, the refrigerant gas is input into the air duct assembly through the freezing chamber, a return air duct is disposed at the air return port 102, and the other end of the return air duct is extended to The heat exchange chamber of the evaporator, on the one hand, realizes the evaporator of the freezer compartment and the refrigerator compartment, thereby simplifying the structure of the air duct and reducing the preparation cost, and on the other hand, realizing the gas circulation in the air duct for cooling the refrigerator compartment, The refrigeration of the refrigerating compartment is achieved.

Specifically, after the fan cools the gas through the evaporator, it is sent to the air inlet channel of the air duct assembly, and then passes through each air exchange port 2022, and is distributed into the heat exchange sub-channel of each layer, and the refrigerant gas will be After cooling, the air duct cover 106 (metal plate) moves downward from the notch of the heat exchange partition 206, passes through the lower return air outlet 102, and returns to the heat exchange chamber of the evaporator located in the freezer compartment. The metal plate is cooled. During the operation, the refrigerating compartment does not exchange air with the heat exchange chamber where the evaporator is located.

The present invention also has other embodiments. Specifically, in one embodiment of the present invention, the number of the air duct partitions 202 is two and disposed oppositely to form heat exchange passages on both sides of the air inlet passage. As shown in Figure 4-5.

In an embodiment of the present invention, referring to FIG. 5, a duct baffle 1 is disposed between the air inlet passage and the air duct cover 106, and the air duct baffle 1 and the air duct cover 106 are disposed. The gap is filled with the insulating material 12.

By providing the heat insulating material 12 between the air inlet passage and the air duct cover 106, the temperature difference between the cold air entering the air inlet passage and the air duct cover 106 from the air inlet 204 is reduced, and the air inlet passage corresponding to the air passage cover can be prevented. Part of 106 produces condensation.

The air inlet passage is preferably located in the middle of the air duct cover 106, and the plurality of heat exchange sub-channels formed by the heat exchange partitions 206 are symmetrically located on both sides of the air inlet passage, thereby The cold air flowing in from the air inlet 204 is uniformly diffused and cooled by the middle portion of the duct cover 106 to both sides. Preferably, the air inlet 204 and the return air outlet 102 are both disposed below the air duct chamber, so that the cold air that enters the air inlet passage from the air inlet 204 can flow through the plurality of heat exchange sub-channels, and then flows back down to The air return port 102 can extend the air circulation air path as compared with the existing air return port located above, and uniformly cools the air duct cover 106 uniformly, so that the cooling capacity in the refrigeration chamber is evenly distributed.

By uniformly arranging the air duct partition 202 and the heat exchange partition 206 on the air duct cover 106, the heat exchange passage structure of the air duct assembly is rationally arranged, so that the heat exchange passage is sufficiently and uniformly integrated with the air duct cover 106. The heat exchange region is in full contact, and the heat exchange region of the heat exchange passage and the duct cover 106 can be fully and maximized. Compared with the existing air duct structure, the air duct assembly of the embodiment of the invention forms a plurality of independent heat exchange regions, prolongs the length of the entire heat exchange passage, improves the heat exchange efficiency of the cold air air passage, and can make the refrigeration The cooling capacity in the cavity is evenly distributed, the temperature in the refrigerating compartment is more uniform, and the refrigeration effect of the refrigerator is better.

In one embodiment of the invention, the rear air duct backing plate 104 is a tank.

Installing the air duct cover 106 of the air duct assembly on the inner side of the tank, preferably in the tank The back and top, the heat exchange channels formed by the air duct components at the back and top are in communication with each other. After the air duct assembly and the tank assembly are assembled, a sealed cavity is formed. Under the action of the air duct assembly, after the air is cooled by the evaporator, the cold air is sent to the intake air passage by the fan, and then the air is exchanged through the air exchange ports 2022. The air duct cover 106 is sent to a chamber corresponding to the heat exchange sub-channel formed by the refrigerating box, and the refrigerating chamber is cooled by the cooled duct cover 106. During the operation, the refrigerator compartment of the refrigerator does not exchange direct air with the heat exchange chamber where the evaporator is located, so as to avoid the humidity of the air in the refrigerator compartment being reduced due to frosting, thereby affecting the fresh-keeping effect of the food in the refrigerator compartment.

It will be appreciated that the duct assembly may be provided in one or more of the back, side and top of the refrigerating compartment of the tank.

In an embodiment of the present invention, the air duct cover 106 is disposed on an inner side surface of the tank, and the air passage cover 106 is provided with a water absorbing material 11 toward a side surface of the refrigerating chamber, as shown in FIG.

When the humidity in the refrigerating compartment is high, the temperature of the duct cover 106 is lower than the temperature in the refrigerating compartment, and moisture in the air may be deposited on the surface of the duct cover 106, and the precipitated moisture may be absorbed by the surface of the duct cover 106. 11 adsorption; when the humidity in the refrigerator compartment is lower than the critical value of the water absorbing material 11, the adsorbed moisture will replenish the humidity of the refrigerator compartment, thereby maintaining the humidity of the refrigerator compartment in an appropriate range.

In another aspect, the present invention provides a refrigerator including a refrigerating compartment, and the refrigerating compartment duct assembly of any of the above embodiments, the refrigerating compartment duct assembly being disposed corresponding to the refrigerating compartment.

The refrigerator provided by the present invention has all the advantageous effects of any of the above-described refrigerating compartment duct assemblies because it is provided with any of the refrigerating compartment duct assemblies described above, and details are not described herein.

In the present invention, the terms "first", "second", and "third" are used for the purpose of description only, and are not to be construed as indicating or implying relative importance; the term "plurality" means two or two. Above, unless otherwise explicitly defined. The terms "installation", "connected", "connected", "fixed" and the like should be understood broadly. For example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "connected" may They are directly connected or indirectly connected through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", The orientation or positional relationship of the "post" or the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply that the device or unit referred to has a specific orientation, The construction and operation in a particular orientation are therefore not to be construed as limiting the invention.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A refrigerating compartment air duct assembly for refrigerating a refrigerating compartment, characterized in that the refrigerating compartment duct assembly comprises:

   Air duct housing assembly;

   a duct frame assembly that is assembled with the air duct housing assembly to cooperate to form a closed refrigerating chamber, the duct frame assembly including a duct partition disposed along an air inlet direction, the duct partition The closed refrigerating chamber is divided into an air inlet passage and a heat exchange passage, and the air passage partition defines at least one air exchange port that communicates the air inlet passage and the heat exchange passage;

   The air inlet is correspondingly opened at the bottom of the air inlet passage, so that the refrigerant gas enters the air inlet passage along the air inlet direction;

   An air return opening, an area of the heat exchange passage formed on the air duct housing assembly,

   The refrigerant gas entering the air inlet passage is introduced into the heat exchange passage through the air exchange port, and is exhausted from the air return port after the heat exchange is completed in the heat exchange passage.
2. The refrigerating compartment air duct assembly according to claim 1, wherein when the plurality of air exchange openings have a plurality of, the air duct frame assembly further comprises:

   a plurality of heat exchange partitions are arranged side by side in the heat exchange passage along the air inlet direction to partition the heat exchange passages into a plurality of heat exchange subchannels, each of the heat exchange subchannels corresponding to The air exchange port has one end attached to and connected to the air duct partition, and the heat exchange partition is further provided with a notch portion.

   The refrigerant gas enters the heat exchange sub-channel through the air exchange port, and returns to the air return port through the notch portion after the heat exchange is completed.
3. The refrigerating compartment duct assembly according to claim 2, wherein

   The notch portion is disposed at the other end of the heat exchange partition, and the plurality of notch portions are disposed correspondingly one by one along the air inlet direction to form a straight return air passage, so that the refrigerant gas along the heat exchange is completed The return air passage flows to the return air outlet.
4. The refrigerating compartment duct assembly of claim 3, wherein the duct housing assembly comprises:

   a duct backing plate assembled with the air duct frame assembly;

   a duct cover that is respectively assembled with the air duct frame assembly and the air duct back panel to Forming the closed refrigeration cavity;

   The return air opening is disposed on the air passage back plate of the heat exchange sub-channel forming the lowermost end.
5. The refrigerating compartment duct assembly according to claim 4, wherein the number of the duct partitions is two and oppositely disposed to form the heat exchange passages on both sides of the air inlet passage.
6. The refrigerating compartment air duct assembly according to claim 5, wherein a duct baffle is disposed between the air inlet passage and the air duct cover, and the air duct baffle and the air duct The gap of the cover plate is filled with an insulating material.
7. A refrigerating compartment duct assembly according to claim 5, wherein a size of said notch portion adjacent said return air opening is larger than a size of said notch portion remote from said return air opening.
8. The refrigerating compartment duct assembly according to any one of claims 5 to 7, wherein the duct backing plate is a tank, and the duct cover is provided on an inner side of the tank, The side surface of the duct back plate facing the refrigerating chamber is provided with a water absorbing material.
9. The refrigerating compartment duct assembly of claim 4, wherein the duct frame assembly further comprises:

   a circumferential frame, respectively, circumferentially engaging the air duct backing plate and the air duct cover to circumferentially close the closed cooling cavity;

   The air duct cover is provided with a circumferential flange portion, and a plurality of claw structures are respectively disposed on the circumferential flange portion;

   a plurality of card slot structures are correspondingly arranged on the circumferential frame,

   The assembly of the air duct cover and the circumferential frame is achieved by the plurality of claw structures engaging with the plurality of card slot structures.
10. A refrigerator, comprising:

    Refrigeration room

    The refrigerating compartment duct assembly according to any one of claims 1 to 9, which is provided corresponding to the refrigerating compartment.

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