CN113915815A

CN113915815A - Refrigerator with a door

Info

Publication number: CN113915815A
Application number: CN202110003415.4A
Authority: CN
Inventors: 张月; 韩丽丽; 张升刚; 张守杰
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2022-01-11
Anticipated expiration: 2041-01-04
Also published as: CN113915815B

Abstract

The invention provides a refrigerator, and belongs to the technical field of household appliances. The refrigerator includes a main body having a freezing chamber partitioned into a freezing space and a micro-freezing space; the freezing air duct is arranged on the inner side of the freezing chamber; the heating air channel plate is arranged on the inner side of the micro-freezing space and forms a heating space with the front wall of the freezing air channel; the heating device is arranged in the heating space and used for generating hot air; a hot air fan provided in the heating space to forcibly flow hot air generated at the heating device; and the heating air inlet and the heating air return inlet are formed on the heating air channel plate, so that the heating space and the micro-freezing space form hot air circulation. The refrigerator can avoid the condition of overhigh local temperature and improve the temperature uniformity.

Description

Refrigerator with a door

Technical Field

The invention relates to the technical field of household appliances, in particular to a refrigerator.

Background

In the related art, the refrigerator has a micro-freezing space (-3 ℃ to 3 ℃) for storing food with a short period. The partial micro-freezing space of the refrigerator is arranged in the freezing chamber (-18 ℃ to-25 ℃), so that a temperature compensation device is required to be arranged to neutralize redundant cold, however, the existing temperature compensation device is directly added to a drawer or an inner container and is close to food in the micro-freezing space, and the situation that the food is rotten due to the fact that the local temperature is higher is easy to occur.

Disclosure of Invention

The present invention solves at least one of the technical problems of the related art to some extent.

Therefore, the present disclosure is directed to a refrigerator, in which a heating space is disposed at a rear side of a micro-freezing space to keep a certain distance between a heating device and food materials in the micro-freezing space, and hot air in the heating space is blown into the micro-freezing space to neutralize excessive cold, so that a situation of local over-high temperature can be avoided while a heat utilization rate is increased, and temperature uniformity is improved.

The present disclosure is directed to a refrigerator, which has a uniform heating space in a micro-freezing space, and hot air is uniformly dispersed in the uniform heating space and then enters the micro-freezing space to neutralize heat, thereby preventing a large temperature fluctuation caused by a high temperature of a heating air inlet directly blowing into the micro-freezing space, and further improving temperature uniformity.

The present disclosure is directed to a refrigerator, which has a uniform cooling space in a micro-freezing space, and the cold air is uniformly dispersed in the uniform cooling space and then enters the micro-freezing space to be cooled, thereby preventing the temperature of the micro-freezing air inlet from being low and directly blowing into the micro-freezing space to cause large temperature fluctuation, and further improving the temperature uniformity.

The refrigerator according to the present disclosure includes: a main body having a freezing chamber partitioned into a freezing space and a micro-freezing space; the freezing air duct is arranged on the inner side of the freezing chamber; the heating air channel plate is arranged on the inner side of the micro-freezing space and forms a heating space with the front wall of the freezing air channel; the heating device is arranged in the heating space and used for generating hot air; a hot air fan provided in the heating space to forcibly flow hot air generated at the heating device; and the heating air inlet and the heating air return inlet are formed on the heating air channel plate, so that the heating space and the micro-freezing space form hot air circulation.

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: the micro-freezing air inlet and the micro-freezing air return inlet are formed by extension walls which are arranged on the freezing air duct and extend forwards, and the extension arms penetrate through the heating space

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: the heat insulation layer is arranged in the heating space and positioned between the heating device and the freezing air channel so as to isolate the heat transfer between the heating space and the freezing air channel; and the heat preservation layer is arranged in the heating space and is positioned between the heating device and the heating air duct plate so as to avoid direct heat transfer between the heating device and the slightly frozen space.

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: a lower partition plate vertically dividing the micro-freezing space and the freezing space; the lower air duct plate is arranged in the micro-freezing space; the soaking space is formed between the lower air duct plate and the upper wall of the lower partition plate and is communicated with the heating air inlet; hot air supply holes formed on the lower duct plate to supply the hot air in the soaking space to the micro-freezing space; the hot air in the heating space flows into the soaking space through the heating air inlet to be uniformly dispersed, and then is sent into the micro-freezing space through the hot air supply hole.

According to an embodiment of the refrigerator of the present disclosure, the hot air supply hole is disposed near a front end of the lower duct plate; the heating air return opening is close to the upper end of the heating space.

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: at least one wind guiding rib is arranged on the lower air duct plate or/and the lower partition plate, and the wind guiding rib is positioned between the heating air inlet and the hot air supply hole in the front-back direction so as to divide the hot air into multiple paths in the soaking space.

According to an embodiment of the refrigerator of the present disclosure, the air guiding rib has n pieces distributed in a left-right direction; the hot air supply holes are provided with n +1 rows distributed along the left-right direction, and the front ends of the air guide ribs are respectively positioned between the two adjacent rows of the hot air supply holes in the left-right direction.

According to an embodiment of the refrigerator of the present disclosure, further comprising: the upper air duct plate is arranged in the micro-freezing space; the uniform cooling space is formed between the upper air duct plate and the upper wall of the main body and is communicated with the micro-freezing air inlet; a cold air supply hole formed on the upper duct plate to supply the cold air in the soaking space to the micro-freezing space; the cold air flows into the uniform cooling space through the micro-freezing air inlet and is uniformly dispersed, and then the cold air is sent into the micro-freezing space through the cold air supply hole.

According to an embodiment of the refrigerator of the present disclosure, the cool air supply hole is disposed near a front end of the upper duct plate; the micro-freezing air return inlet is arranged close to the lower end of the micro-freezing space.

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: the air door is arranged in the freezing air duct and is positioned at the upstream of the micro-freezing air inlet; the temperature sensor is arranged in the micro-freezing space and used for detecting the temperature in the micro-freezing space; and a controller for: when the temperature detected by the temperature sensor is lower than a preset value, the air door is controlled to be closed, and the heating device works to convey hot air to the micro-freezing space; and when the temperature detected by the temperature sensor is higher than a preset value, the air door is controlled to be opened, and the heating device does not work so as to convey cold air to the micro-freezing space.

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: an evaporator chamber formed between the freezing duct and a rear wall of the main body; the evaporator is arranged in the evaporator cavity and used for generating cold air; a freezing air inlet which is arranged on the freezing air duct and is used for supplying cold air generated by the evaporator to the freezing space; the freezing air return opening is arranged at the lower end of the freezing air duct and communicated with the evaporator cavity so as to collect the heated cold air in the freezing space to the evaporator cavity; and a micro-freezing air return duct communicated with the micro-freezing air return opening and the freezing air return opening is further arranged in the freezing air duct, and cold air in the micro-freezing space passes through the micro-freezing air return duct from the micro-freezing air return opening and then enters the evaporator cavity from the freezing air return opening.

Advantageous effects

According to the micro-freezing space, the heating space is arranged at the rear side of the micro-freezing space, so that the heating device keeps a certain distance from food materials in the micro-freezing space, and hot air in the heating space is blown into the micro-freezing space to neutralize redundant cold energy by matching with the hot air fan, so that the condition of overhigh local temperature can be avoided while the heat utilization rate is increased, and the temperature uniformity of the micro-freezing space is improved; in addition, the use of the hot air fan can change the cold and heat transfer in the micro-freezing space from natural convection to forced convection, thereby further improving the temperature uniformity of the micro-freezing space; in addition, the heating space is arranged at the front side of the freezing air duct, so that the freezing air duct and the micro-freezing space are isolated, and the cold energy in the freezing air duct can be prevented from being transferred to the micro-freezing space when the freezing space is refrigerated.

According to the micro-freezing air inlet and the micro-freezing air return inlet, the extension arm penetrates through the heating space, independent cold air and hot air circulation is formed in the micro-freezing space, mutual interference of cold and hot flows is avoided, and the temperature stability of the micro-freezing space is guaranteed.

This is disclosed, set up the insulating layer between heating device and freezing wind channel, the heat of having avoided heating space gets into freezing wind channel, sets up the heat preservation between heating device and the antetheca of heating space, avoids heating device direct temperature compensation who is as the space that freezes a little to lead to local high temperature, has the temperature homogeneity of further improvement.

This openly, set up soaking space (the even cold space) in the space that freezes a little, hot-air (refrigerated air) reentrant the space that freezes a little after soaking space (the even cold space) homodisperse, avoided air intake high temperature (the temperature is low) directly to blow in the space that freezes a little and cause great temperature fluctuation, had the temperature homogeneity of further improvement.

The utility model discloses, be close to the front end setting of lower air duct board (last air duct board) with hot air supply hole (cold air supply hole), be close to the upper portion (lower part) setting of little frozen space with heating return air inlet (freezing return air inlet), make hot air supply hole and heating return air inlet (cold air supply hole and freezing return air inlet) be located the diagonal both ends in little frozen space, the interval of furthest's extension hot air supply hole and heating return air inlet (cold air supply hole and freezing return air inlet), it is inhomogeneous to avoid hot air (cold air) only to circulate the temperature that leads to in the latter half in little frozen space.

According to the air guide rib structure, the air guide ribs are arranged in the soaking space (the cold-homogenizing space), so that the uniform dispersion of hot air (cold air) can be facilitated, and the temperature uniformity is further improved.

According to the air conditioner, the independent air supply outlet and the independent air return inlet are respectively arranged in the micro-freezing space and the freezing space, and the air return air path is only converged at the evaporator, so that the mutual interference of the temperatures of the two spaces is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a view of an external appearance of a refrigerator according to an embodiment of the present disclosure;

fig. 2 is a schematic side sectional view of a refrigerator according to an embodiment of the present disclosure;

fig. 3 is a perspective view of a freezing duct of a refrigerator according to an embodiment of the present disclosure;

fig. 4 is an exploded view of a freezing duct of a refrigerator according to an embodiment of the present disclosure;

FIG. 5 is a rear view of a freezing duct of a refrigerator omitting a duct cover according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a cool air cycle for a freezer compartment of a refrigerator according to an embodiment of the present disclosure;

fig. 7 is a perspective view of a freezer compartment of a refrigerator according to an embodiment of the present disclosure;

fig. 8 is a side sectional view of a freezer compartment of a refrigerator according to an embodiment of the present disclosure;

fig. 9 is a view of a micro-freezing space and a freezing space of a refrigerator according to an embodiment of the present disclosure;

FIG. 10 shows a schematic view of the cooling cycle of FIG. 9;

FIG. 11 is a side view of a freezing duct and a heating space of a refrigerator according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a hot air cycle of a micro-freezing space of a refrigerator according to an embodiment of the present disclosure;

fig. 13 is an exploded view of a soaking space of a refrigerator according to an embodiment of the present disclosure;

fig. 14 is a schematic hot air flow diagram of a soaking space of a refrigerator according to an embodiment of the present disclosure;

fig. 15 is a side sectional view of a freezer compartment of a refrigerator according to another embodiment of the present disclosure;

in the above figures: 1. a refrigerator; 10. a main body; 11. a box liner; 12. a housing; 13. a foamed layer; 21. a refrigerated compartment; 22. a freezing compartment; 23. a slightly frozen space; 24. a refrigerated space; 30. a door; 41. a compressor, 42, an evaporator; 43. a cold air fan; 50. a press chamber; 51. an evaporator chamber; 61. a vertical partition plate; 62. a lower partition plate; 63. a front bulkhead; 64. a front beam; 65. adding a hot air duct plate; 66. a first extension arm; 67. a second extension arm; 68. a lower air duct plate; 69. an upper airway plate; 70. a drawer; 80. a freezing air duct; 80a, an air duct back plate; 80b, air duct foam; 80c, an air duct cover plate; 81. a cold homogenizing space; 82. a cold air supply hole; 84. a freezing air return opening; 85. freezing an air inlet; 86. a slightly frozen air return opening; 87. a micro-freezing air inlet; 88. slightly freezing the air return duct; 89. a damper; 90. heating the space; 91. heating wires; 92. heating the air return inlet; 93. heating the air inlet; 94. a hot air fan; 95. a soaking space; 96. a hot air supply hole; 97. an air deflector; 98. a wind guiding rib; 99a and a heat insulation layer.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

In the drawings, a side of the refrigerator facing a user when in use is defined as a front side, and an opposite side is defined as a rear side.

Referring to fig. 1 and 2, the refrigerator 1 may include a main body 10,

storage chambers

21 and 22 formed inside the main body 10, a door 30 connected to a front side of the main body 10 to open/close the

storage chambers

21 and 22, and a cool air supply device installed inside the main body 10 to supply cool air to the

storage chambers

21 and 22.

The body 10 is substantially box-shaped and may include: a tank 11 and a shell 12.

Storage chambers

21 and 22 are formed inside the tank liner 11; the cabinet 12 is connected to an outer side of the cabinet 11 to form an external appearance of the refrigerator 1; an insulating foam layer 13 may be filled between the cabinet 12 and the tank 11 to insulate the

storage chambers

21 and 22.

The storage compartments 21 and 22 may have a refrigerating compartment 21 located at an upper portion, and a freezing compartment 22 located at a lower portion. Alternatively, the positions of the refrigerating compartment 21 and the freezing compartment 22 may be interchanged. In the current embodiment, the refrigerator is in the form of a cross door, but the present embodiment is not limited thereto, and the present disclosure is applicable to all forms of refrigerators.

The front surfaces of the storage compartments 21 and 22 are provided with openings to store or take out foods, and the opened front surfaces can be opened or closed by the door 30.

The cool air supply device is configured to form cool air by circulating a cooling circuit, and may supply the

storage chambers

21 and 22. The cool air supply device includes: the cooling system comprises a compressor, a condenser, a capillary tube, cooling loop equipment of an evaporator, a refrigerant pipeline and a cold air fan; wherein the compressor, the condenser, the capillary tube and the evaporator are connected in sequence by refrigerant pipes to form a refrigeration circuit, the refrigerant pipes guide the refrigerant into each cooling circuit device, and the cold air fan forcibly circulates air to supply the cold air generated at the evaporator to the

storage chambers

21 and 22, which is applicable to the prior art and will not be described in detail.

The cool air supply device may include a plurality of evaporators to independently supply cool air to the refrigerating compartment 21 and the freezing compartment 22.

The air duct structure of the refrigerator is described below by taking the freezing compartment 22 as an example:

a freezing air duct 80 is arranged in the freezing compartment 22, an evaporator cavity 51 is formed between the freezing air duct 80 and the rear wall of the box liner 11, and the evaporator 42 is positioned in the evaporator cavity 51 and used for generating cold air; the freezing air duct 80 is provided with an air port for communicating the freezing compartment 22 with the evaporator chamber 51, and the cold air fan 43 is provided in the freezing air duct 81, so that the cold air at the evaporator 42 can be forced to flow, and further the cold air is circulated to the freezing compartment 22 through the air port, thereby reducing the temperature of the freezing compartment 22.

Referring to fig. 3 to 5, the freezing air duct 80 includes an air duct back plate 80a, air duct foam 80b, and an air duct cover plate 80c, wherein the air duct back plate 80a and the air duct cover plate 80c wrap the air duct foam 80b from front to back, a space recessed to the front side is provided on the rear surface of the air duct foam 80b, and the cool air fan 43 is installed in the space.

Referring to fig. 6, a hollow arrow in the figure illustrates a cold air circulation path of the freezing compartment, a freezing air inlet 85 is provided on a front wall of the air duct back plate 80a, the freezing air inlet 85 is used for supplying cold air at the evaporator 42 into the freezing compartment 22, a freezing air return 84 is formed between a lower end of the air duct back plate 80a and a wall of the tank container 11, and the freezing air return 84 is used for collecting the heated cold air in the freezing compartment 22 to the evaporator 42, and then, a cold air circulation is formed to reduce the temperature of the freezing compartment 22.

Referring to fig. 7 and 8, the refrigerator 1 of the present disclosure creates a micro-freezing space 23(-3 ℃ to 3 ℃) in the freezing compartment 22(-18 ℃ to-25 ℃) thereof, and maintains the freezing capacity of the original freezing compartment 22. For example, as shown in fig. 1, the micro-freezing space 23 is provided on the upper right side of the freezing compartment 22.

The micro-freezing space 23 is arranged in the freezing chamber 22 instead of the refrigerating chamber 21, because the micro-freezing space 23 is used for storing fish food materials, the refrigerating chamber 21 is used for storing cooked fruit and vegetable food materials, and the use experience of a user can be influenced due to the fact that the two food materials are close to each other.

Referring to fig. 9, the micro-freezing space 23 in the freezing compartment 22 can be enclosed by a vertical partition 61, a lower partition 62, a front partition 63, and the upper wall and the side wall of the tank liner 11, the front partition 63 has an opening, and the drawer 70 can be pushed and pulled from the opening; the other space in the freezing chamber 22 excluding the micro-freezing space 23 is a freezing space 24.

In order to avoid the influence of the lower temperature in the freezing space 24 on the micro-freezing space 23, the present disclosure provides a sealed isolation structure to prevent the mutual transfer of cold and heat.

Specifically, the middle of the vertical partition board 61 is filled with heat preservation foam, and the VIP board is filled on the lower partition board 62 and the front panel of the drawer 70, so that the volume is saved while the heat is preserved; meanwhile, a front beam 64 is arranged at the lower end of the front side of the front partition plate 63 or on the door 30, and the front beam 64 can fill the gap between the door 30 and the lower partition plate 62 to prevent the upward penetration of cold energy in the lower direction, thereby ensuring the sealing of the micro-freezing space 23 relative to the freezing space 24.

Set up in freezing room 22 and freeze space 23 a little, two space temperature differences in a little freeze space 23 and freezing space 24 are great and the same case courage 11 of sharing and door 30, in order to avoid air supply and temperature influence each other when returning air, the little space 23 that freezes of this disclosure and freezing space 24 have set up independent supply-air outlet and return air inlet respectively, have avoided mutual interference.

Specifically, referring to fig. 3 and 10, the solid arrows in fig. 10 illustrate the cool air circulation path of the micro-freezing space, and the open arrows illustrate the cool air circulation path of the freezing space; the aforementioned freezing air return opening 84 and the freezing air inlet opening 85 are only communicated to the freezing space 24; a micro-freezing air return opening 86 and a micro-freezing air inlet opening 87 which are communicated to the micro-freezing space 23 are additionally arranged on the freezing air duct 80, the micro-freezing air inlet opening 87 is used for supplying the cold air at the evaporator 42 to the micro-freezing space 23, and the micro-freezing air return opening 86 is used for collecting the heated cold air at the micro-freezing space 23 to the evaporator 42, so that the cold air circulation of the micro-freezing space 23 is formed.

The air duct foam 80b is provided with a micro-freezing air return duct 88 communicating the micro-freezing air return opening 86 and the freezing air return opening 84, so that two sets of circulating air ducts of the freezing space 24 and the micro-freezing space 23 are completely separated, and are only converged to the evaporator 42 at the freezing air return opening 86, thereby avoiding mutual interference of the temperatures of the two spaces.

The refrigerator 1 may include a damper 89 for opening/closing the cool air circulation wind path of the micro-freezing space 23, the damper 89 being disposed in the freezing wind path 80 upstream of the micro-freezing wind inlet 87; when the air door 89 is closed, the cold air circulation air path of the micro-freezing space 23 is blocked, and the cold air at the evaporator 42 enters the freezing space 24 from the freezing air inlet 85 under the action of the cold air fan 43 and then circulates to the evaporator 42 from the freezing air return opening 86; when the air door 89 is opened, the cold air circulation air passage of the micro-freezing space 23 is communicated, and the cold air at the evaporator 42 enters the micro-freezing space 23 through the micro-freezing air inlet 87 under the action of the cold air fan 43 and then circulates to the evaporator 42 through the micro-freezing air return passage 88 by the micro-freezing air return inlet 86.

With continued reference to fig. 8, 11, the refrigerator 1 may include a heating device, such as a heating wire 91, for generating hot air as temperature compensation to neutralize excess cold in the micro-freezing space 23.

Specifically, a heating air duct plate 65 positioned at the front side of the air duct back plate 80a is provided in the micro-freezing space 23, a heating space 90 is formed between the heating air duct plate 65 and the air duct back plate 80a, and a heating wire 91 is provided in the heating space 90.

Referring to fig. 12 and 13, an arrow in fig. 12 illustrates a hot air circulation path of the micro-freezing space, and a hot air fan 94 may be provided in the heating space 90 for forcibly flowing hot air generated at the heating wire 91; the heating air duct plate 65 is provided with a heating air inlet 93 and a heating air return 92, the heating air inlet 93 is used for supplying hot air of the heating space 90 to the micro-freezing space 23, and the heating air return 92 is used for collecting the hot air cooled by the micro-freezing space 23 to the heating space 90, thereby forming hot air circulation between the heating space 90 and the micro-freezing space 23.

During heating, the heating wires 91 and the hot air fan 94 work, and after the air is heated by the heating wires 91 in the heating space 90, the air enters the micro-freezing space 23 through the heating air inlet 93 under the driving action of the hot air fan 94, so that the temperature of the micro-freezing space 23 is increased, and then the air returns to the heating space 90 through the heating air return 92.

According to the micro-freezing space, the heating space 90 is arranged in the micro-freezing space 25, and the heating wire 91 is arranged in the heating space 90, so that the heating wire 91 and food materials in the micro-freezing space 23 keep a certain distance, and the situation that the local temperature is higher and the food is rotten easily due to the fact that the heating wire 91 is directly arranged on the drawer 70 or a box container forming the micro-freezing space and the contact distance between the heating wire 91 and the food materials is too short is avoided; the heating space 90 disclosed by the invention is matched with the hot air fan 94 to blow hot air into the micro-freezing space 23 to neutralize redundant cold energy, so that the condition of overhigh local temperature can be avoided while the heat utilization rate is increased, and the temperature uniformity is improved; in addition, the use of the hot air fan 94 can change the cold and heat transfer from natural convection to forced convection, thereby further improving the temperature uniformity.

With continued reference to fig. 3 and 11, the partial-freezing intake vent 87 is formed by the first extension arm 66, and the first extension arm 66 extends from the duct back 80a to the front side and through the heating space 90; the micro-freezing air return opening 86 is formed by the second extension arm 67, and the second extension arm 67 extends from the air duct back plate 80a to the front side and penetrates through the heating space 90; thus, the cold air circulation of the micro-freezing space 23 does not need to pass through the heating space 90, and the cold air circulation and the hot air circulation only have intersection in the micro-freezing space 23 and cannot be started simultaneously, so that the mutual interference caused by inconsistent cold and hot air flow directions is avoided.

The refrigerator 1 may include a temperature sensor provided in the micro freezing space 23 to detect the temperature of the micro freezing space 23, and a controller of the refrigerator is connected to the damper 89 and the temperature sensor. When the temperature sensor detects that the temperature is lower than the preset value, the controller controls the heating wire 91 and the hot air fan 94 to be started, air enters the micro-freezing space 23 under the driving action of the hot air fan 94 after being heated by the heating wire 91 in the heating space 90, the temperature of the micro-freezing space 23 is increased, and then the air returns to the heating space 90 through the heating air return opening 92. When the temperature of the micro-freezing space 23 is higher than the preset value, the evaporator 42 is started, the air door 89 is opened, cold air blown by the evaporator 42 enters the micro-freezing space 23 through the micro-freezing air inlet 87 to reduce the temperature of the micro-freezing space 23, is blown out through the micro-freezing air return inlet 86, and returns to the evaporator 42 together after being converged with the freezing return air at the freezing return air inlet 84 through the micro-freezing return air duct 88.

In some embodiments of the present disclosure, with continued reference to fig. 11, the refrigerator may include a thermal insulation layer 99a, the thermal insulation layer 99a is disposed in the heating space 90 and between the heating wire 91 and the air duct back plate 80a, so as to prevent heat from entering the freezing air duct 80 and affecting the refrigerating capacity of the freezing space chamber 22, which results in waste of refrigeration capacity; in addition, the rear side of the heating air duct plate 65 is adhered with heat insulation cotton which is positioned between the heating wire 91 and the heating air duct plate 65, so that the phenomenon that the local temperature is too high due to the fact that the heating wire 91 is directly used for temperature compensation of the micro-freezing space 23 is avoided.

In some embodiments of the present disclosure, with continued reference to fig. 12 and 13, the refrigerator 1 may include a lower duct plate 68, a soaking space 95 being formed between the lower duct plate 68 and an upper wall of the lower partition plate 62 for uniformly dispersing hot air; the heating air inlet 93 is arranged at the lower end of the heating air duct plate 65 and is communicated with the soaking space 95; the lower duct plate 68 is provided with hot air supply holes 96 for supplying hot air in the soaking space 95 to the micro-freezing space 23.

The hot air in the heating space 90 enters the soaking space 95 through the heating air inlet 93 for dispersion, then enters the micro-freezing space 23 through the hot air supply hole 96, and then returns to the heating space 90 through the heating air return hole 92.

Like this, soaking space 95 is the hot-air flow region, the hot-air temperature that hot-blast fan 94 blew out is higher, evenly distributed in soaking space 95 earlier, make partial heat upwards give off through down wind channel board 68, the hot-air temperature drops the back slightly, blow to the space 23 that freezes a little via hot-air supply hole 96 again, compare in the hot-air directly from heating wind channel board 65 on heating air intake 93 blow in the space 23 that freezes a little, can avoid heating air intake 93 high temperature, it causes great temperature fluctuation directly to blow in the space 23 that freezes a little, the temperature homogeneity has further been improved.

The hot air supply hole 96 is arranged close to the front end of the lower air duct plate 68, and the heating air return opening 92 is arranged close to the upper end of the heating air duct plate 65, so that the hot air supply hole 96 is far away from the heating air duct plate 65, the hot air supply hole and the heating air return opening 92 are positioned at two ends of a diagonal line of the micro-freezing space 23, the distance between the hot air supply hole 96 and the heating air return opening 92 is lengthened to the maximum degree, and the phenomenon that the temperature of hot air is uneven due to circulation only in the rear half part is avoided.

Referring to fig. 14, a heating air inlet 93 with a substantially horn shape is disposed on the heating air duct plate 65 near the lower end, and two air deflectors 97 are disposed in the heating air inlet 93, so that hot air in the heating space 90 can be divided into multiple paths to be blown out, thereby enlarging the hot air area and avoiding the concentrated high temperature of the heating air inlet 93. In the current embodiment, two air deflectors 97 are disposed at the heating air outlet 93, but the embodiment of the present disclosure is not limited thereto, and a person skilled in the art may correspondingly set the number of the air deflectors 97 according to actual working conditions.

The upper wall of the lower partition plate 62 is provided with two air guiding ribs 98, and the air guiding ribs 98 are positioned between the heating air inlet 93 and the hot air supply hole 96, so that the hot air is divided into three paths in the soaking space 95, which is more favorable for guiding the hot air to be uniformly dispersed in the soaking space 95, and further avoids the local temperature being higher.

The two air-guiding ribs 98 are substantially arc-shaped, extend in the front-rear direction, correspond to the air-guiding ribs 98, and the hot air supply holes 96 are arranged in three rows, and the front ends of the air-guiding ribs 98 are located between the two adjacent rows of hot air supply holes 96 in the left-right direction, so that three paths of hot air dispersed by the air-guiding ribs 98 are respectively blown out from one row of hot air supply holes 96. However, the embodiment of the present disclosure is not limited to this, n air guide ribs 98 may be provided, n +1 rows of hot air supply holes 96 may be provided, and n +1 hot air paths branched from the air guide ribs 98 may be blown out corresponding to one row of hot air supply holes 96.

In this way, the hot air is guided to be uniformly dispersed by the air guide plate 97 and the air guide rib 98, and the uniformity of the temperature is further improved.

It should be noted that, as can be understood by those skilled in the art, the wind guiding ribs 98 may also be disposed on the lower duct plate 68.

Similarly, referring to fig. 15, in which solid arrows indicate a circulation path of the chilled air in the micro freezing space, in some embodiments of the refrigerator of the present disclosure, in order to prevent the temperature of the micro freezing air inlet 87 from being too low, the air is directly blown into the micro freezing space 23 to cause local temperature fluctuation, and a uniform cooling space 81 is provided above the micro freezing space 23 to uniformly disperse the chilled air introduced into the micro freezing space 23.

Specifically, the refrigerator 1 may include an upper duct plate 69, a uniform cooling space 81 formed between the upper duct plate 69 and the upper wall of the cabinet 11, a fine freezing air inlet 87 disposed near the upper end of the duct back plate 80a and communicated with the uniform cooling space 81, and a cool air supply hole 82 provided on the upper duct plate 69 for supplying cool air of the uniform cooling space 81 to the fine freezing space 23.

Like this, the equal cold space 81 is the refrigerated air flow region, the refrigerated air temperature that the air intake 87 of freezing a little blew out is lower, at first homodisperse in equal cold space 81, make partial cold volume permeate through the upper air duct board 69 and give off downwards, the refrigerated air temperature rises the back slightly, blow to the little space 23 that freezes via refrigerated air supply hole 82 again, compare in the refrigerated air and directly blow in the little space 23 that freezes from the air intake 87 that freezes a little in the refrigerated air, can avoid the air intake 87 temperature that freezes a little to hang down, it causes great temperature fluctuation directly to blow in the little space 23 that freezes, the temperature uniformity has further been improved.

The cool air supply hole 82 is provided near the front end of the upper duct plate 69, and the fine freezing return air port 86 is provided near the lower end of the fine freezing space 23, so that the cool air enters the fine freezing space 23 through the cool air supply hole 82 of the uniform cooling space 81, the distance between the cool air supply hole 82 and the fine freezing return air port 86 is lengthened, temperature fluctuation is reduced, and temperature uniformity is improved.

In addition, an air deflector may be disposed in the micro-freezing air inlet 87, and an air guiding rib may be disposed on the upper air duct plate 69, which has the same structural principle as the soaking space 95 and will not be described again.

When the temperature sensor detects that the temperature is lower than the preset value, the controller controls the heating wire 91 and the hot air fan 94 to be started, air enters the soaking space 95 under the driving action of the hot air fan 94 after being heated by the heating wire 91 in the heating space 90, and enters the micro-freezing space 23 through the hot air supply holes 96 after being uniformly distributed in the soaking space 95, so that the temperature of the micro-freezing space 23 is increased, and then the air returns to the heating space 90 through the heating air return hole 92. When the temperature of the micro-freezing space 23 is higher than the preset value, the evaporator 42 is started, the air door 89 is opened, the cold air at the evaporator 42 enters the uniform cooling space 81 from the micro-freezing air inlet 87 and enters the micro-freezing space 23 from the cold air supply hole 82, the temperature of the micro-freezing space 23 is reduced, the cold air is blown out from the micro-freezing air return opening 86, and the cold air returns to the evaporator 42 together after being converged with the freezing air return at the freezing air return opening 84 through the micro-freezing air return duct 88.

This is disclosed, set up heating space 90 and make heating device and the edible material that slightly freezes space 23 keep the certain distance in the rear side that slightly freezes space 23, and the hot-air in heating space 90 blows in slightly freezes space 23 and comes the surplus cold volume of neutralization, can avoid the too high condition of local temperature when increasing heat utilization, has the temperature homogeneity of improvement.

The present disclosure isolates the heating device from the freezing air duct 80 and the heating air duct plate 65, prevents the heating device from transferring heat to the freezing air duct 80 to affect the refrigerating capacity of the freezing compartment 22, and directly uses the heat transfer device as the temperature compensation of the micro-freezing space 23 to cause local overhigh temperature, thereby further improving the temperature uniformity.

This is disclosed, sets up soaking space 95 in the space 23 that freezes a little, and hot-air gets into the space 23 that freezes a little after soaking space 95 homodisperse and heat, has avoided heating air intake 93 high temperature directly to blow in the space 23 that freezes a little and cause great temperature fluctuation, has the temperature homogeneity of further improvement.

This is disclosed, sets up the even cold space 81 in the space 23 that freezes a little, and the refrigerated air gets into the space 23 that freezes a little after even dispersion in even cold space 81 again and refrigerates, has avoided freezing air intake 87 a little low temperature directly to blow in the space 23 that freezes a little and cause great temperature fluctuation, has the temperature homogeneity of further improvement.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A refrigerator, characterized by comprising:

a main body having a freezing chamber partitioned into a freezing space and a micro-freezing space;

the freezing air duct is arranged on the inner side of the freezing chamber;

the heating air channel plate is arranged on the inner side of the micro-freezing space and forms a heating space with the front wall of the freezing air channel;

the heating device is arranged in the heating space and used for generating hot air;

a hot air fan provided in the heating space to forcibly flow hot air generated at the heating device;

and the heating air inlet and the heating air return inlet are formed on the heating air channel plate, so that the heating space and the micro-freezing space form hot air circulation.

2. The refrigerator according to claim 1, further comprising:

the micro-freezing air inlet and the micro-freezing air return inlet are formed by extension walls which are arranged on the freezing air duct and extend forwards, and the extension arms penetrate through the heating space.

3. The refrigerator according to claim 1, further comprising:

the heat insulation layer is arranged in the heating space and positioned between the heating device and the freezing air channel so as to isolate the heat transfer between the heating space and the freezing air channel; and

and the heat insulation layer is arranged in the heating space and is positioned between the heating device and the heating air duct plate so as to avoid direct heat transfer between the heating device and the slightly frozen space.

4. The refrigerator according to claim 1, further comprising:

a lower partition plate vertically dividing the micro-freezing space and the freezing space;

the lower air duct plate is arranged in the micro-freezing space;

the soaking space is formed between the lower air duct plate and the upper wall of the lower partition plate and is communicated with the heating air inlet;

hot air supply holes formed on the lower duct plate to supply the hot air in the soaking space to the micro-freezing space;

the hot air in the heating space flows into the soaking space through the heating air inlet to be uniformly dispersed, and then is sent into the micro-freezing space through the hot air supply hole.

5. The refrigerator according to claim 4, wherein,

the hot air supply hole is arranged close to the front end of the lower air duct plate;

the heating air return opening is close to the upper end of the heating space.

6. The refrigerator of claim 5, further comprising:

at least one wind guiding rib is arranged on the lower air duct plate or/and the lower partition plate, and the wind guiding rib is positioned between the heating air inlet and the hot air supply hole in the front-back direction so as to divide the hot air into multiple paths in the soaking space.

7. The refrigerator according to claim 6, wherein,

the wind guide ribs are provided with n wind guide ribs distributed along the left-right direction;

the hot air supply holes are provided with n +1 rows distributed along the left-right direction, and the front ends of the air guide ribs are respectively positioned between the two adjacent rows of the hot air supply holes in the left-right direction.

8. The refrigerator according to claim 1, further comprising:

the upper air duct plate is arranged in the micro-freezing space;

the uniform cooling space is formed between the upper air duct plate and the upper wall of the main body and is communicated with the micro-freezing air inlet;

a cold air supply hole formed on the upper duct plate to supply the cold air in the soaking space to the micro-freezing space;

the cold air flows into the uniform cooling space through the micro-freezing air inlet and is uniformly dispersed, and then the cold air is sent into the micro-freezing space through the cold air supply hole.

9. The refrigerator according to claim 8, wherein,

the cold air supply hole is arranged close to the front end of the upper air duct plate;

the micro-freezing air return inlet is arranged close to the lower end of the micro-freezing space.

10. The refrigerator according to claim 1, further comprising:

the air door is arranged in the freezing air duct and is positioned at the upstream of the micro-freezing air inlet;

the temperature sensor is arranged in the micro-freezing space and used for detecting the temperature in the micro-freezing space; and

a controller to: when the temperature detected by the temperature sensor is lower than a preset value, the air door is controlled to be closed, and the heating device works to convey hot air to the micro-freezing space; and when the temperature detected by the temperature sensor is higher than a preset value, the air door is controlled to be opened, and the heating device does not work so as to convey cold air to the micro-freezing space.

11. The refrigerator according to claim 1, further comprising:

an evaporator chamber formed between the freezing duct and a rear wall of the main body;

the evaporator is arranged in the evaporator cavity and used for generating cold air;

a freezing air inlet which is arranged on the freezing air duct and is used for supplying cold air generated by the evaporator to the freezing space; and

the freezing air return opening is arranged at the lower end of the freezing air duct and is communicated with the evaporator cavity so as to collect the heated cold air in the freezing space to the evaporator cavity;

and a micro-freezing air return duct communicated with the micro-freezing air return opening and the freezing air return opening is further arranged in the freezing air duct, and cold air in the micro-freezing space passes through the micro-freezing air return duct from the micro-freezing air return opening and then enters the evaporator cavity from the freezing air return opening.