CN113915815B

CN113915815B - Refrigerator with a refrigerator body

Info

Publication number: CN113915815B
Application number: CN202110003415.4A
Authority: CN
Inventors: 张月; 韩丽丽; 张升刚; 张守杰
Original assignee: Hisense Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2023-11-03
Anticipated expiration: 2041-01-04
Also published as: CN113915815A

Abstract

The invention provides a refrigerator, and belongs to the technical field of household appliances. The refrigerator includes a main body having a freezing compartment partitioned into a freezing space and a micro-freezing space; the freezing air duct is arranged at the inner side of the freezing compartment; the heating air duct 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 duct; the heating device is arranged in the heating space and is used for generating hot air; a hot air fan arranged in the heating space to force the hot air generated at the heating device to flow; the heating air inlet and the heating air return opening are formed on the heating air duct 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 refrigerator body

Technical Field

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

Background

In the related art, a micro-freezing space (-3 ℃ to 3 ℃) is arranged in a refrigerator and is used for storing foods with shorter period. The micro-freezing space of part of the refrigerator is arranged in the freezing compartment (-18 ℃ to-25 ℃), so that a temperature compensation device is needed to neutralize redundant cold, however, the existing temperature compensation device is directly added to a drawer or an inner container, is close to food in the micro-freezing space, and is easy to generate the condition of partial food spoilage due to higher temperature.

Disclosure of Invention

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

Therefore, the present disclosure is directed to providing a refrigerator having a heating space provided at a rear side of a micro-freezing space such that a heating device is spaced apart from food materials in the micro-freezing space, hot air in the heating space is blown into the micro-freezing space to neutralize excessive cold, thereby increasing heat utilization rate while avoiding a situation of excessively high local temperature, and having improved temperature uniformity.

The disclosure aims to provide a refrigerator, which is provided with a soaking space in a micro-freezing space, hot air uniformly disperses in the soaking space and then enters the micro-freezing space to neutralize heat, so that larger temperature fluctuation caused by high temperature of a heating air inlet directly blowing into the micro-freezing space is avoided, and further improved temperature uniformity is achieved.

The disclosure aims to provide a refrigerator, which is provided with a uniform cooling space in a micro-freezing space, and cold air is uniformly dispersed in the uniform cooling space and then enters the micro-freezing space for cooling, so that the phenomenon that the temperature of a micro-freezing air inlet is low and directly blown into the micro-freezing space to cause larger temperature fluctuation is avoided, and the temperature uniformity is further improved.

The refrigerator according to the present disclosure includes: a main body having a freezing compartment partitioned into a freezing space and a micro-freezing space; the freezing air duct is arranged at the inner side of the freezing compartment; the heating air duct 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 duct; the heating device is arranged in the heating space and is used for generating hot air; a hot air fan arranged in the heating space to force the hot air generated at the heating device to flow; the heating air inlet and the heating air return opening are formed on the heating air duct 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 opening are formed by extending walls which are arranged on the freezing air duct and extend forwards, and the extending 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 duct so as to isolate heat transfer between the heating space and the freezing air duct; and the heat preservation layer is arranged in the heating space and positioned between the heating device and the heating air duct plate so as to avoid direct heat transfer between the heating device and the micro-freezing space.

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: a lower partition plate for vertically separating 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; a hot air supply hole formed on the lower duct plate to supply hot air in the soaking space to the micro-freezing space; and 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 provided near the front end of the lower duct plate; the heating return air inlet is arranged 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 the embodiment of the refrigerator, the air guide ribs are provided with n air 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 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 cool air supply hole formed on the upper duct plate to supply cool air in the uniform cooling space to the micro freezing space; the cold air flows into the uniform cooling space through the micro-freezing air inlet to be uniformly dispersed, and then 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 provided near the front end of the upper duct plate; the micro-freezing return air 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 is controlled to work so as to convey hot air to the slightly frozen space; 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 that cold air is conveyed to the slightly frozen space.

According to an embodiment of the refrigerator of the present disclosure, the refrigerator further includes: an evaporator chamber formed between the freezing air duct and a rear wall of the main body; the evaporator is arranged in the evaporator cavity and is used for generating cold air; the refrigerating air inlet is arranged on the refrigerating air duct so as to supply the cold air generated by the evaporator to the refrigerating space; the refrigerating air return port is arranged at the lower end of the refrigerating air duct and is communicated with the evaporator cavity so as to collect the heated cold air in the refrigerating space into the evaporator cavity; the freezing air duct is internally provided with a micro-freezing air return duct communicated with the micro-freezing air return opening and the freezing air return opening, 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 method, the heating space is arranged at the rear side of the micro-freezing space, so that a certain distance is kept between the heating device and food materials in the micro-freezing space, and the hot air in the heating space is blown into the micro-freezing space to neutralize redundant cold quantity by matching with the hot air fan, so that the situation 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 blower can change the cold and heat transfer in the micro-freezing space from natural convection into forced convection, so that the temperature uniformity of the micro-freezing space is further improved; in addition, the heating space is arranged at the front side of the freezing air duct, so that the effect of isolating the freezing air duct from the micro-freezing space is achieved, and the transmission of the cold in the freezing air duct to the micro-freezing space during the refrigeration of the freezing space can be avoided.

According to the present disclosure, the extension arm that forms little air intake and little freeze the return air wears to establish the heating space setting, forms independent cold wind and hot-blast two way circulation in little freezing space, has avoided cold and hot flow mutual interference, has guaranteed little temperature stability who freezes the space.

The heat insulation layer is arranged between the heating device and the freezing air duct, so that heat in the heating space is prevented from entering the freezing air duct, the heat insulation layer is arranged between the heating device and the front wall of the heating space, the situation that the local temperature is too high due to the fact that the heating device is directly used as temperature compensation of the micro-freezing space is avoided, and further improved temperature uniformity is achieved.

The utility model discloses a set up soaking space (even cold space) in freezing the space a little, hot air (cold air) reentrant freezing the space a little after soaking space (even cold space) evenly disperses, avoided the air intake temperature high (low temperature) directly to blow into freezing the space a little and cause great temperature fluctuation, have the temperature homogeneity of further improvement.

The utility model discloses a be close to the front end setting of lower wind channel board (upper wind channel board) with hot air supply hole (cold air supply hole), be close to the upper portion (lower part) setting in little freezing space with heating return air inlet (freezing return air inlet) for hot air supply hole and heating return air inlet (cold air supply hole and freezing return air inlet) are located little the diagonal both ends in freezing space, and the interval of hot air supply hole and heating return air inlet (cold air supply hole and freezing return air inlet) is prolonged to the at utmost, avoids hot air (cold air) to circulate the temperature that leads to at little the latter half in freezing space only unevenly.

The air guide ribs are arranged in the soaking space (uniform cooling space), so that uniform dispersion of hot air (cold air) can be facilitated, and temperature uniformity is further improved.

The utility model discloses a set up independent supply-air outlet and return air inlet respectively in little freezing space and freezing space, the return air wind way only merges in the evaporimeter department, avoids two space temperature mutual interference.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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 cross-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 refrigerator according to an embodiment of the present disclosure with a freezing air duct omitting an air duct cover plate;

fig. 6 is a cold air circulation schematic view of a freezing compartment of a refrigerator according to an embodiment of the present disclosure;

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

fig. 8 is a side sectional view of a freezing 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 diagram of the cold air 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 hot air circulation schematic of a micro-frozen 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 hot air flow schematic of a soak space of a refrigerator according to an embodiment of the present disclosure;

fig. 15 is a side cross-sectional view of a freezing 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 tank liner; 12. a housing; 13. a foaming layer; 21. a refrigerating compartment; 22. freezing the compartment; 23. a slightly frozen space; 24. freezing the space; 30. a door; 41. a compressor, 42, and an evaporator; 43. a cold air fan; 50. a press chamber; 51. an evaporator chamber; 61. a vertical partition board; 62. a lower partition plate; 63. a front baffle; 64. a front beam; 65. heating the air duct plate; 66. a first extension arm; 67. a second extension arm; 68. a lower duct plate; 69. an upper duct plate; 70. a drawer; 80. freezing air duct; 80a, an air duct backboard; 80b, air duct foam; 80c, an air duct cover plate; 81. the uniform cooling space; 82. a cool air supply hole; 84. freezing an air return port; 85. a freezing air inlet; 86. a slightly frozen return air inlet; 87. a slightly freezing air inlet; 88. a slightly freezing return air duct; 89. a damper; 90. heating the space; 91. a heating wire; 92. heating the air return port; 93. heating the air inlet; 94. a hot air fan; 95. soaking space; 96. a hot air supply hole; 97. an air deflector; 98. wind guide ribs; 99a, a heat insulation layer.

Detailed Description

The present invention will be specifically described below by way of exemplary embodiments. It is to be understood 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, the side of the refrigerator facing the user in use is defined as the front side, and the opposite side is defined as the rear side.

Referring to fig. 1 and 2, the refrigerator 1 may include a main body 10, storage chambers 21 and 22 formed at the inner side of the main body 10, a door 30 connected at the front side of the main body 10 to open/close the storage chambers 21 and 22, and a cool air supply device installed in the main body 10 to supply cool air to the storage chambers 21 and 22.

The body 10 is generally box-shaped and may include: a tank 11 and a housing 12. Storage chambers 21 and 22 are formed inside the tank 11; the cabinet 12 is connected to the outside of the cabinet 11 to form the external appearance of the refrigerator 1; an insulating foam layer 13 may be filled between the cabinet 12 and the liner 11 to insulate the storage chambers 21 and 22.

The storage chambers 21 and 22 may have a refrigerating compartment 21 at an upper portion and a freezing compartment 22 at a lower portion. Also, 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 chambers 21 and 22 are provided with openings for storing or taking 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 the cooling circuit, and may supply the cool air to the storage chambers 21 and 22. The cool air supply apparatus includes: 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 sequentially connected by a refrigerant line to form a refrigerating circuit, the refrigerant line guides the refrigerant into each cooling circuit device, and the cool air fan forcibly circulates air to supply cool air generated at the evaporator to the storage chambers 21 and 22, which is applicable to the prior art and is not 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 will be described by taking the refrigerating compartment 22 as an example:

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

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

Referring to fig. 6, the hollow arrow in the drawing illustrates a cold air circulation path of the freezing compartment, a front wall of the air duct back plate 80a is provided with a freezing air inlet 85, the freezing air inlet 85 is used for supplying cold air at the evaporator 42 into the freezing compartment 22, a freezing air return opening 84 is formed between a lower end of the air duct back plate 80a and a wall of the container 11, and the freezing air return opening 84 is used for collecting the heated cold air at the evaporator 42 in the freezing compartment 22, and then, 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 slightly frozen space 23 (-3 ℃ to 3 ℃) in a freezing compartment 22 (-18 ℃ to-25 ℃) thereof while maintaining the freezing capability of the original freezing compartment 22. For example, as shown in fig. 1, a slight freezing space 23 is provided on the upper right side of the freezing compartment 22.

The present disclosure sets the micro-freezing space 23 in the freezing compartment 22 instead of the refrigerating compartment 21, because the micro-freezing space 23 is used for storing fish and meat food materials, and the refrigerating compartment 21 is used for storing cooked fruits and vegetables, and the use experience of users is affected due to the close distance between the two food materials.

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

To avoid the effect of lower temperatures within the refrigerated space 24 on the micro-refrigerated space 23, the present disclosure provides a sealed isolation structure to prevent the heat and cold from transferring to each other.

Specifically, the middle of the vertical partition 61 is filled with heat-insulating foam, the lower partition 62 and the front panel of the drawer 70 are filled with VIP plates, and the heat insulation is performed while the volume is saved; meanwhile, a front beam 64 is provided at the front lower end of the front partition 63 or on the door 30, and the front beam 64 can fill the gap between the door 30 and the lower partition 62, preventing the downward cold from penetrating upward, thereby ensuring the sealing of the micro-freezing space 23 with respect to the freezing space 24.

The freezing compartment 22 is internally provided with the micro-freezing space 23, the micro-freezing space 23 and the freezing space 24 have larger space temperature difference and share the same container 11 and door 30, and in order to avoid the temperature interaction during air supply and air return, the micro-freezing space 23 and the freezing space 24 of the present disclosure are respectively provided with an independent air supply opening and an independent air return opening, so that the mutual interference is avoided.

Specifically, referring to fig. 3 and 10, solid arrows in fig. 10 indicate a cool air circulation path of the micro-frozen space, and open arrows indicate a cool air circulation path of the frozen space; the aforementioned freezing air return 84 and freezing air intake 85 are only connected to the freezing space 24; a micro-freezing return air inlet 86 and a micro-freezing air inlet 87 which are communicated with the micro-freezing space 23 are further arranged on the freezing air duct 80, the micro-freezing air inlet 87 is used for supplying cold air at the evaporator 42 to the micro-freezing space 23, and the micro-freezing return air inlet 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.

A micro-freezing return air duct 88 which is communicated with the micro-freezing return air duct 86 and the freezing return air duct 84 is arranged on the air duct foam 80b, so that two sets of circulating air paths 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 return air duct 86, and the mutual interference of the temperatures of the two spaces is avoided.

The refrigerator 1 may include a damper 89 for opening/closing a cool air circulation air path of the micro-freezing space 23, the damper 89 being disposed in the freezing air duct 80 upstream of the micro-freezing air inlet 87; when the evaporator 42 works and the air door 89 is closed, the cold air circulation air path of the micro-freezing space 23 is blocked, and 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 circulates to the evaporator 42 from the freezing air return 86; when the evaporator 42 works and the air door 89 is opened, the cold air circulation air path of the micro-freezing space 23 is communicated, 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 return air duct 88 through the micro-freezing return air inlet 86.

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

Specifically, a heating air duct board 65 is provided in the micro-freezing space 23 at the front side of the air duct back plate 80a, a heating space 90 is formed between the heating air duct board 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, arrows in fig. 12 illustrate 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 the 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 cooled hot air of the micro-freezing space 23 to the heating space 90, so that hot air circulation is formed between the heating space 90 and the micro-freezing space 23.

During heating, the heating wire 91 and the hot air fan 94 work, after the heating space 90 is heated by the heating wire 91, air enters the micro-freezing space 23 through the heating air inlet 93 under the driving action of the hot air fan 94, 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.

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 is kept at a certain distance from food materials in the micro-freezing space 23, and the situation that the heating wire 91 is too close to the food materials in contact distance due to the fact that the heating wire 91 is directly arranged on the drawer 70 or a box liner forming the micro-freezing space is avoided, and local temperature is too high and food spoil is easy to occur; 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 situation 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 heat and cold transfer from natural convection to forced convection, thereby further improving the temperature uniformity.

With continued reference to fig. 3 and 11, the micro-freezer intake 87 is formed by the first extension arm 66, the first extension arm 66 extending forward from the tunnel back plate 80a and through the heating space 90; the slight freezing return air inlet 86 is formed by a second extension arm 67, and the second extension arm 67 extends forward from the air duct back plate 80a and passes through the heating space 90; in this way, 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 an intersection in the micro-freezing space 23 and cannot be started at the same time, so that the mutual interference caused by inconsistent cold and hot air flows is avoided.

The refrigerator 1 may include a temperature sensor provided in the micro-freezing space 23 for detecting the temperature of the micro-freezing space 23, and a controller of the refrigerator and a damper 89, the temperature sensor being connected. 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 start, and after the heating space 90 is heated by the heating wire 91, air enters the micro-freezing space 23 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 port 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 from the micro-freezing air inlet 87, the temperature of the micro-freezing space 23 is reduced, the cold air is blown out through the micro-freezing air return opening 86, and the cold air is returned to the evaporator 42 after the freezing air return opening 84 and the freezing air return are combined through the micro-freezing air return passage 88.

In some embodiments of the present disclosure, with continued reference to fig. 11, the refrigerator may include a thermal insulation layer 99a, where 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, to prevent heat from entering the freezing air duct 80, affecting the refrigerating capacity of the freezing space chamber 22, and resulting in waste of cold energy; in addition, thermal insulation cotton is stuck to the rear side of the heating air duct plate 65, and is located between the heating wire 91 and the heating air duct plate 65, so that local overhigh temperature caused by direct use of the heating wire 91 as temperature compensation of the micro-freezing space 23 is avoided.

In some embodiments of the present disclosure, with continued reference to fig. 12, 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; a hot air supply hole 96 is provided in the lower duct plate 68 for supplying hot air in the soaking space 95 to the micro-freezing space 23.

After the hot air in the heating space 90 enters the soaking space 95 through the heating air inlet 93 and is dispersed, the hot air 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 opening 92.

Like this, soaking space 95 is hot air flow region, and the hot air temperature that hot-blast fan 94 blown out is higher, evenly disperses in soaking space 95 earlier for some heat upwards gives off through lower wind channel board 68, and after the hot air temperature was slightly reduced, blow to little freezing space 23 again via hot air supply hole 96, compare in that the hot air directly blows into little freezing space 23 from heating air intake 93 on the heating wind channel board 65, can avoid heating air intake 93 temperature height, directly blow into little freezing space 23 and cause great temperature fluctuation, further improved the temperature homogeneity.

The hot air supply hole 96 is provided near the front end of the lower duct plate 68, and the heating return air port 92 is provided near the upper end of the heating duct plate 65, so that the hot air supply hole 96 is far away from the heating duct plate 65 and is positioned at two diagonal ends of the micro-freezing space 23 with the heating return air port 92, the distance between the hot air supply hole 96 and the heating return air port 92 is prolonged to the greatest extent, and the temperature non-uniformity caused by the circulation of hot air only in the rear half is avoided.

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

The upper wall of the lower partition plate 62 is provided with two air guide ribs 98, and the air guide ribs 98 are positioned between the heating air inlet 93 and the hot air supply holes 96, so that the hot air is divided into three paths in the soaking space 95, and even dispersion of the hot air in the soaking space 95 is more facilitated, and local high temperature is further avoided.

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

In this way, the hot air is guided to be uniformly dispersed through the air deflector 97 and the air guide ribs 98, so that the temperature uniformity is further improved.

It should be understood by those skilled in the art that the air guide rib 98 may be disposed on the lower duct board 68.

Similarly, referring to fig. 15, solid arrows illustrate a cool air circulation path of the micro-freezing space, and in some embodiments of the refrigerator of the present disclosure, in order to avoid that the temperature of the micro-freezing air inlet 87 is too low, the micro-freezing space 23 is directly blown into to cause local temperature fluctuation, and a uniform cooling space 81 is disposed above the micro-freezing space 23 to uniformly disperse cool air entering the micro-freezing space 23.

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

Like this, even cold space 81 is cold air flow region, and the cold air temperature that little freezes air intake 87 blowout is lower, evenly disperses in even cold space 81 earlier for partial cold volume is transmitted down through last wind channel board 69, and after the cold air temperature slightly risees, blows to little freezing space 23 through cold air supply hole 82 again, compares cold air and directly blows into little freezing space 23 from little freezing air intake 87, can avoid little freezing air intake 87 temperature too low, directly blows into little freezing space 23 and causes great temperature fluctuation, has further improved the temperature homogeneity.

The cold air supply hole 82 is provided near the front end of the upper duct plate 69, and the micro-freezing return air inlet 86 is provided near the lower end of the micro-freezing space 23, so that cold air enters the micro-freezing space 23 through the cold air supply hole 82 of the uniform cooling space 81, the distance between the cold air supply hole 82 and the micro-freezing return air inlet 86 is lengthened, the temperature fluctuation is reduced, and the 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, and the structural principle of this portion is the same as that of the aforesaid soaking space 95, and will not be described in detail.

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 start, air enters the soaking space 95 under the driving action of the hot air fan 94 after the heating space 90 is heated by the heating wire 91, 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 the air returns to the heating space 90 through the heating return air inlet 92. When the temperature of the micro-freezing space 23 is higher than a preset value, the evaporator 42 is started, the air door 89 is opened, cold air at the evaporator 42 enters the uniform cooling space 81 from the micro-freezing air inlet 87, enters the micro-freezing space 23 from the cold air supply hole 82, reduces the temperature of the micro-freezing space 23, is blown out through the micro-freezing air return opening 86, and returns to the evaporator 42 together after the freezing air return opening 84 and the freezing air return are combined through the micro-freezing air return duct 88.

According to the method, the heating space 90 is arranged at the rear side of the micro-freezing space 23, so that a certain distance is kept between the heating device and food materials in the micro-freezing space 23, hot air in the heating space 90 is blown into the micro-freezing space 23 to neutralize redundant cold, the heat utilization rate is increased, the situation that local temperature is too high can be avoided, and the method has improved temperature uniformity.

The present disclosure isolates the heating device from the freezing air duct 80, 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 as temperature compensation for the micro-freezing space 23 to cause local excessive temperature with further improved temperature uniformity.

According to the method, the soaking space 95 is arranged in the micro-freezing space 23, hot air is uniformly dispersed in the soaking space 95 and then enters the micro-freezing space 23 to neutralize heat, so that larger temperature fluctuation caused by high temperature of the heating air inlet 93 directly blowing into the micro-freezing space 23 is avoided, and further improved temperature uniformity is achieved.

The utility model discloses a set up the samming space 81 in freezing space 23 a little, the cold air is in freezing space 23 internal refrigeration again after the samming space 81 evenly disperses a little, has avoided freezing air intake 87 low temperature and has directly blown a little and freeze space 23 and cause great temperature fluctuation a little, has the temperature homogeneity of further improvement.

In the description of the present invention, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A refrigerator, comprising:

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

the freezing air duct is arranged at the inner side of the freezing compartment;

the heating air duct 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 duct;

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

a hot air fan arranged in the heating space to force the hot air generated at the heating device to flow;

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

the micro-freezing air inlet and the micro-freezing air return opening are formed by extending arms which are arranged on the freezing air duct and extend forwards, and the extending arms penetrate through the heating space;

the cold air circulation of the micro-freezing space does not need to pass through the heating space, and the cold air circulation and the hot air circulation only have intersection in the micro-freezing space.

2. The refrigerator of claim 1, further comprising:

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

the heat preservation layer is arranged in the heating space and positioned between the heating device and the heating air duct plate so as to prevent the heating device from directly transferring heat with the micro-freezing space.

3. The refrigerator of claim 1, further comprising:

a lower partition plate for vertically separating 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;

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

and 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.

4. The refrigerator of claim 3, wherein,

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

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

5. The refrigerator of claim 4, 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.

6. The refrigerator of claim 5, 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 two adjacent rows of the hot air supply holes in the left-right direction.

7. The refrigerator of 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 cool air supply hole formed on the upper duct plate to supply cool air in the uniform cooling space to the micro freezing space;

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

8. The refrigerator of claim 7, wherein,

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

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

9. The refrigerator of 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 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 is controlled to work so as to convey hot air to the slightly frozen space; 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 that cold air is conveyed to the slightly frozen space.

10. The refrigerator of claim 1, further comprising:

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

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

the refrigerating air inlet is arranged on the refrigerating air duct so as to supply the cold air generated by the evaporator to the refrigerating space; and

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

the freezing air duct is internally provided with a micro-freezing air return duct communicated with the micro-freezing air return opening and the freezing air return opening, 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.