CN111609631A

CN111609631A - Refrigerator with fan in middle of evaporator

Info

Publication number: CN111609631A
Application number: CN201910143334.7A
Authority: CN
Inventors: 聂圣源; 李伟; 曹东强
Original assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Current assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-09-01

Abstract

The invention provides a refrigerator with a fan positioned in the middle of an evaporator, which comprises: the refrigerator comprises a refrigerator body, a storage compartment and a cooling compartment, wherein the refrigerator body is internally provided with a cooling chamber positioned below and at least one storage compartment positioned above the cooling chamber; the evaporator is arranged in the cooling chamber and is configured to cool the airflow entering the cooling chamber to form cooling airflow, and the evaporator comprises a first heat exchange part and a second heat exchange part which are integrally arranged; and a blower fan located downstream of the first heat exchanging portion and upstream of the second heat exchanging portion on the airflow path and configured to cause the cooling air to flow into the at least one storage compartment. According to the refrigerator, the cooling chamber is positioned at the lower part in the refrigerator body, the lower space in the refrigerator body is occupied, the cooling chamber can be used for offering abdications for the press cabin, the storage chamber does not need to offer abdications for the press cabin, and the problem that the refrigerating chamber is special-shaped due to the fact that the refrigerating chamber needs to offer abdications for the press cabin in the existing scheme is solved.

Description

Refrigerator with fan in middle of evaporator

Technical Field

The invention relates to the technical field of household appliances, in particular to a refrigerator with a fan positioned in the middle of an evaporator.

Background

In the existing refrigerator, a freezing chamber is generally positioned at the lower part of the refrigerator, an evaporator is positioned at the rear part of the outer side of the freezing chamber, a press chamber is positioned at the rear lower part of the freezing chamber, and the freezing chamber needs to be abducted for the press chamber, so that the freezing chamber has special shape and the depth of the freezing chamber is limited.

Disclosure of Invention

In view of the above, it is an object of the present invention to provide a refrigerator in which a blower fan is located in the middle of an evaporator to overcome or at least partially solve the above problems.

A further object of the present invention is to improve the air supply efficiency and to ensure the refrigerating effect of the refrigerator.

The invention provides a refrigerator with a fan positioned in the middle of an evaporator, which comprises:

the refrigerator comprises a refrigerator body, a storage compartment and a cooling compartment, wherein the refrigerator body is internally provided with a cooling chamber positioned below and at least one storage compartment positioned above the cooling chamber;

the evaporator is arranged in the cooling chamber and is configured to cool the airflow entering the cooling chamber to form cooling airflow, and the evaporator comprises a first heat exchange part and a second heat exchange part which are integrally arranged;

and a blower fan located downstream of the first heat exchanging portion and upstream of the second heat exchanging portion on the airflow path and configured to cause the cooling air to flow into the at least one storage compartment.

Furthermore, the first heat exchange part, the second heat exchange part and the air supply fan are arranged in a straight line; or

The first heat exchange part, the second heat exchange part and the air supply fan are arranged in a straight line, the straight line extends horizontally, and the flowing direction of air flow generated by the air supply fan between the first heat exchange part and the second heat exchange part is parallel to the straight line.

Further, a first water collecting tray is arranged below the first heat exchanging part and is configured to collect and discharge condensed water generated on the first heat exchanging part;

a second water collecting tray is disposed below the second heat exchanging part and configured to collect and discharge condensed water generated on the second heat exchanging part.

Further, still include:

the evaporating dish is arranged below the condenser of the refrigerator;

and the drainage channel is configured to convey the condensed water in the first water collecting tray and the second water collecting tray into the evaporating dish.

Furthermore, the refrigerator also comprises an evaporation pan and a drainage channel, wherein the evaporation pan is arranged below the first water collecting tray and the second water collecting tray, and the drainage channel is configured to vertically and linearly convey the condensed water in the first water collecting tray and the second water collecting tray downwards into the evaporation pan; or

The refrigerator also comprises two evaporation dishes and a drainage channel, wherein one evaporation dish is arranged below the first water collecting tray, the other evaporation dish is arranged below the second water collecting tray, and the drainage channel is configured to convey condensed water in the first water collecting tray and the second water collecting tray into the two evaporation dishes in a straight line downwards in a one-to-one correspondence mode.

Further, still include:

the compressor cabin is internally provided with a condenser, a cooling fan and a compressor, and is also provided with an air inlet and an air outlet, and the cooling fan is configured to generate airflow which enters the compressor cabin from the air inlet and is discharged from the air outlet;

wherein the air outlet is configured to direct an air flow exiting the compressor compartment towards the evaporator pan.

Furthermore, the box body comprises a freezing inner container positioned at the lowest part, and a cooling chamber is defined in the freezing inner container;

the storage compartment comprises a freezing chamber which is limited by the freezing inner container and is positioned right above the cooling chamber.

Further, at least one front return air inlet communicated with the freezing chamber is formed at the front side of the cooling chamber, so that return air flow of the freezing chamber enters the cooling chamber through the at least one front return air inlet for cooling.

Further, still include:

the top cover is positioned above the evaporator;

at least one front cover group, wherein at least one front return air inlet is formed at the front side of each front cover group;

the top cover, the at least one front cover group and the rear wall, the bottom wall and the two transverse side walls of the freezing inner container jointly define a cooling chamber.

Furthermore, the number of the front return air inlets is two, and the two front return air inlets are respectively marked as a first front return air inlet and a second front return air inlet;

the front cover group includes:

a front trim cover, the front end of which is positioned in front of the front end of the evaporator and is spaced from the front end of the evaporator, the front wall of the front end of which is formed with a first opening, and the rear side of the front end of which is open;

and the front end part of the front air channel cover is positioned at the front end of the evaporator, and the front end part of the front air channel cover is inserted into the front decorative cover forwards from the rear side opening part of the front end part of the front decorative cover so as to divide the first opening into a first front return air inlet positioned below and a second front return air inlet positioned above.

According to the refrigerator, the cooling chamber is positioned at the lower part in the refrigerator body, the lower space in the refrigerator body is occupied, the cooling chamber can be used for offering abdications for the press cabin, the storage chamber does not need to offer abdications for the press cabin, and the problem that the refrigerating chamber is specially-shaped due to the fact that the refrigerating chamber needs to offer abdications for the press cabin in the existing scheme is avoided, so that the storage volume of the refrigerating chamber can be guaranteed; in addition, the air supply fan is arranged at the downstream of the evaporator, so that the air flow cooled by the evaporator flows to the storage compartment at an accelerated speed, and the refrigeration effect of the refrigerator is ensured.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic perspective view of a refrigerator according to a first embodiment of the present invention;

fig. 2 is a schematic perspective view of a refrigerator according to a first embodiment of the present invention, in which a refrigerating chamber door body, a temperature-changing drawer, and a freezing drawer are hidden;

fig. 3 is a schematic view of a refrigerator according to a first embodiment of the present invention, in which a refrigerating compartment door body, a temperature varying drawer, a freezing drawer, and a cover plate are hidden to show an evaporator and a blowing fan provided in a cooling compartment;

fig. 4 is a schematic view of a refrigerator according to a second embodiment of the present invention, in which a door body and the like are hidden;

FIG. 5 is a schematic view of the freezing liner and its internal components of a refrigerator according to a second embodiment of the present invention, wherein the top cover of the hood plate is hidden to show the blower fan;

fig. 6 is a partial schematic view of a refrigerator according to a first embodiment of the present invention;

fig. 7 is a partial schematic view of a refrigerator according to a second embodiment of the present invention;

FIG. 8 is an exploded schematic view of FIG. 7;

fig. 9 is an exploded schematic view of a nacelle according to a third embodiment of the invention;

fig. 10 is a partial schematic view of a refrigerator according to a third embodiment of the present invention, showing a bottom structure of the refrigerator;

fig. 11 is a partial schematic view of a refrigerator according to a third embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of a refrigerator according to a third embodiment of the present invention;

fig. 13 is a schematic sectional view of a refrigerator according to a fourth embodiment of the present invention;

fig. 14 is a schematic cross-sectional view of a refrigerator according to a fifth embodiment of the present invention;

fig. 15 is a schematic sectional view of an evaporator and a blower fan according to a third embodiment of the present invention;

fig. 16 is a schematic sectional view of an evaporator and a blower fan according to a seventh embodiment of the present invention.

Detailed Description

The present embodiment provides a refrigerator 10, and the refrigerator 10 of the embodiment of the present invention is described below with reference to fig. 1 to 8. In the following description, the orientations or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", and the like are orientations based on the refrigerator 10 itself as a reference, and "front" and "rear" are directions indicated in fig. 1 and 6, as shown in fig. 1, "lateral" means a left-right direction, and means a direction parallel to the width direction of the refrigerator 10.

Fig. 1 is a schematic external view of a refrigerator 10 according to a first embodiment of the present invention, fig. 2 is a schematic view of the refrigerator 10 according to the first embodiment of the present invention, in which a refrigerating chamber door 136, a temperature-changing drawer, and a freezing drawer are hidden, fig. 3 is a schematic view of the refrigerator 10 according to the first embodiment of the present invention, in which the refrigerating chamber door 136, the temperature-changing drawer, the freezing drawer, and a cover plate 102 are hidden to show an evaporator 101 and a blowing fan 103 provided in a cooling chamber, and fig. 4 is a schematic view of the refrigerator 10 according to a second embodiment of the present invention, in which parts such as the doors are hidden.

As shown in fig. 1 to 4, the refrigerator 10 may generally include a cabinet 100, the cabinet 100 including a housing and a storage liner disposed inside the housing, a space between the housing and the storage liner being filled with a heat insulating material (forming a foaming layer), the storage liner defining therein a storage compartment, which may generally include a freezing liner 130, a refrigerating liner 120, and the like, the storage compartment including a freezing chamber 132 defined within the freezing liner 130 and a refrigerating chamber 121 defined within the refrigerating liner 120.

In the first embodiment, as shown in fig. 2 to 3 in combination with fig. 1, the freezing liner 130 further defines a temperature-changing chamber 131 above the freezing chamber 132, and the temperature-changing chamber 131 and the freezing chamber 132 are both drawer-type structures. A refrigerating chamber door 136 is provided at a front side of the refrigerating chamber 121 to open or close the refrigerating chamber 121, a variable temperature chamber drawer door 137 is provided at a front side of the variable temperature chamber 131 to open or close the variable temperature chamber 131, and a freezing chamber drawer door 138 is provided at a front side of the freezing chamber 132 to open or close the freezing chamber 132.

As is well known to those skilled in the art, the temperature within the refrigerated compartment 121 is generally between 2 ℃ and 10 ℃, preferably between 4 ℃ and 7 ℃. The temperature in the freezer compartment 132 is typically in the range of-22 c to-14 c. The temperature-changing chamber 131 can be adjusted to-18 ℃ to 8 ℃ at will. The optimum storage temperatures for different kinds of articles are different and the suitable storage locations are different, for example, fruit and vegetable foods are suitable for storage in the refrigerating compartment 121 and meat foods are suitable for storage in the freezing compartment 132.

As those skilled in the art can appreciate, the refrigerator 10 of the present embodiment may further include an evaporator 101, a blower fan 103, a compressor, a condenser, and a throttling element (not shown), etc. The evaporator 101 is connected to a compressor, a condenser, and a throttle element via refrigerant lines to form a refrigeration cycle, and is cooled when the compressor is started to cool air flowing therethrough.

In particular, in the present embodiment, the cabinet 100 defines therein a cooling chamber located below, the evaporator 101 is disposed in the cooling chamber, and all the storage compartments are located above the cooling chamber. In the first embodiment, as shown in fig. 2 to 3, the freezing inner container 130 is located at a lower portion of the cabinet 100, and the aforementioned cooling chamber and a freezing chamber 132 located directly above the cooling chamber and a warming chamber 131 located directly above the freezing chamber 132 are defined therein. In the second embodiment, as shown in fig. 4, the freezing inner container 130 defines therein the aforementioned cooling chamber and a freezing chamber 132 located immediately above the cooling chamber. In this embodiment, the temperature-changing chamber 131 is defined by two temperature-changing liners above the freezing liner 130, and each temperature-changing liner defines one temperature-changing chamber 131.

In the conventional refrigerator, the freezing chamber 132 is generally located at the lowest portion of the refrigerator 10, so that the freezing chamber 132 is located at a lower position, and a user needs to bend down or squat down greatly to perform an operation of taking and placing articles in the freezing chamber 132, which is inconvenient for the user to use, especially for the elderly. Furthermore, the freezing chamber 132 needs to be set aside for the press chamber, and the freezing chamber 132 inevitably needs to be made into a special-shaped space for the set aside of the press chamber, reducing the storage capacity of the freezing chamber 132.

In the embodiment, the cooling chamber is limited below the storage chamber, so that the cooling chamber occupies the lower space of the box body 100, the height of the freezing chamber 132 is raised, the stooping degree of a user when the user takes and places articles in the freezing chamber 132 is reduced, and the use experience of the user is improved; moreover, the cooling chamber can provide a yield for the press cabin, and the freezing chamber 132 does not need to provide a yield for the press cabin any more, so that the problem that the freezing chamber 132 is irregular due to the fact that the freezing chamber 132 needs to provide a yield for the press cabin in the existing scheme is solved, and the depth and the storage volume of the freezing chamber 132 can be guaranteed. In addition, the air supply fan 103 is arranged at the downstream of the evaporator 101, so that the air flow cooled by the evaporator 101 is accelerated to flow to the storage compartment, and the refrigeration effect of the refrigerator 10 is ensured.

Fig. 5 is a schematic view of the freezing chamber 130 and its internal components of the refrigerator 10 according to the second embodiment of the present invention, in which the top cover 1021 of the hood plate 102 is hidden to show the blower fan 103, and fig. 6 is a partial schematic view of the refrigerator 10 according to the first embodiment of the present invention.

As shown in fig. 3, 5 and 6, the supply air fan 103 is located downstream of the evaporator 101 in the airflow path, and is configured to cause the cooling air cooled by the evaporator 101 to flow into at least one storage compartment. The air supply fan 103 may be a centrifugal fan, and the air supply fan 103 is disposed in the cooling chamber and behind the evaporator 101, and is disposed to be inclined upward from front to back. That is, the front end of the air supply fan 103 is lower than the rear end, so that the air supply fan 103 as a whole assumes a posture of being inclined rearward. Therefore, the arrangement height of the air supply fan 103 is reduced, and the height space occupied by the air supply fan 103 is reduced, so that the height space occupied by the cooling chamber is reduced, and the storage volume of the storage compartment on the upper part of the cooling chamber is ensured.

The evaporator 101 is disposed in the cooling chamber in a flat cubic shape as a whole, that is, the long and wide faces of the evaporator 101 are parallel to the horizontal plane, the thickness face is disposed perpendicular to the horizontal plane, and the thickness dimension is significantly smaller than the length dimension of the evaporator 101. By placing the evaporator 101 horizontally in the cooling chamber, the evaporator 101 is prevented from occupying more space, and the storage volume of the freezing chamber 132 above the cooling chamber is ensured.

The blower fan 103 includes a housing 1031 and an impeller 1032 disposed in the housing 1031, the housing 1031 extends obliquely upward from front to back, an air inlet is formed on the upper surface of the housing 1031, and an air outlet is formed on the rear end of the housing 1031. The inclination direction of the impeller 1032 is parallel to the inclination direction of the housing 1031, that is, the rotation axis of the impeller 1032 is perpendicular to the upper surface of the housing 1031, so that the air outlet path of the housing 1031 behind the impeller 1032 is substantially parallel to the impeller 1032, thereby avoiding the wind from being caught at the air outlet of the air supply fan 103, ensuring the air supply efficiency and reducing the airflow flowing noise.

As shown in fig. 6, the angle β 1 between the upper surface of the housing 1031 and the vertical plane is 55 ° to 70 °, and it is also understood that the angle β 2 between the rotation axis of the impeller 1032 and the vertical line is 20 ° to 35 °, for example, β 2 may be 20 °, 25 °, 30 °, 33 °, or 35 °. By thus arranging the air supply fan 103, the air flow loss is reduced to the maximum extent while the height space occupied by the air supply fan 103 is reduced, so that the air supply efficiency is further ensured while the compactness of the spatial layout is ensured.

The horizontal distance α between the front end surface of the housing 1031 and the rear end surface of the evaporator 101 is 15 mm to 35 mm, for example, α may be 15 mm, 20 mm, 25 mm, 30 mm or 35 mm, so as to avoid frosting of the air supply fan 103 due to an excessively small distance between the air supply fan 103 and the evaporator 101.

The second embodiment is different from the first embodiment in that the housing 1031 has a spiral duct to reduce airflow noise.

The refrigerator 10 further includes an air supply duct 141, the air supply duct 141 is communicated with an air outlet of the cabinet of the air supply fan 103, and the air supply fan 103 causes cooling air to flow into at least one storage compartment through the air supply duct 141. In the first embodiment, as shown in fig. 3, the freezing compartment 130 is defined with a freezing compartment 132 located above the cooling compartment and a warming compartment 131 located above the freezing compartment 132, and the air supply duct 141 has a first air supply outlet communicating with the freezing compartment 132 and a second air supply outlet communicating with the warming compartment 131. In the second embodiment, as shown in fig. 4 and 5, the freezing inner container 130 only defines the freezing chamber 132 above the cooling chamber, and the air supply duct 141 has a first air supply outlet communicating with the freezing chamber 132.

Fig. 7 is a partial schematic view of a refrigerator 10 according to a second embodiment of the present invention, and fig. 8 is an exploded schematic view of fig. 7.

As shown in fig. 2, 4 to 8, the front side of the cooling compartment is formed with at least one front return air inlet communicating with the freezing compartment 132, so that the return air flow of the freezing compartment 132 enters the cooling compartment through the at least one front return air inlet for cooling.

The refrigerator 10 also includes a cover panel 102, with the front side of the cover panel 102 being formed with the aforementioned at least one front return air inlet. In the first embodiment of the present invention, as shown in fig. 1, as shown in fig. 2, the rear portion of the hood plate 102 is open, the hood plate 102 is fastened to the bottom of the freezing container 130 and defines a cooling compartment together with the rear wall, the bottom wall and the two lateral side walls of the freezing container 130, and the front side of the hood plate 102 is formed with a front return air inlet 102 a.

In the first embodiment, as shown in fig. 6, the refrigerator 10 further includes a duct cover 139 stepped from front to rear, and the duct cover 139 is located below the upper surface of the hood plate 102 and is disposed at the upper portion of the evaporator 101. The air duct cover plate 139 comprises a front plate section 139a, a transition plate section 139c and a rear plate section 139b which are sequentially connected from front to back, the front plate section 139a and the upper surface of the evaporator 101 are arranged at intervals to form an air flow channel between the front plate section 139a and the upper surface of the evaporator 101, the rear plate section 139b is attached to the upper surface of the evaporator 101, and the situation that the return air flow directly flows backwards without passing through the evaporator 101 due to the interval between the rear plate section 139b and the upper surface of the evaporator 101 is avoided.

The space between the duct cover 139 and the upper surface of the shroud 102 should be filled with a wind blocking foam 139d so that the return air flow cannot enter the space between the duct cover 139 and the upper surface of the shroud 102, thereby preventing a portion of the return air flow from entering the space between the duct cover 139 and the upper surface of the shroud 102 without passing through the evaporator 101.

A part of the return air flow entering the cooling compartment enters the evaporator 101 through the front of the front end surface of the evaporator 101 to exchange heat with the evaporator 101, and the other part of the return air flow enters an air flow channel formed by the interval between the front plate section 139a and the upper surface of the evaporator 101 from the upper part of the front end surface of the evaporator 101 and then enters the evaporator 101 from the upper surface of the evaporator 101 to exchange heat with the evaporator 101. This allows the return air flow entering the cooling compartment to enter the evaporator 101 from different directions and different positions, thereby enhancing the cooling effect of the evaporator 101.

In addition, when the external environment humidity is high or the front end surface of the evaporator 101 is abnormally frosted to affect the air intake, the return air can enter the evaporator 101 from the air flow channel between the front plate section 139a and the upper surface of the evaporator 101, so that the frosting is prevented from affecting the heat exchange efficiency of the evaporator 101, and the refrigeration effect of the refrigerator 10 is effectively ensured.

Unlike the first embodiment, in the second embodiment, as shown in fig. 4, the hood panel 102 includes a top cover 1021 positioned above the evaporator and at least one front cover group, each front cover group having the aforementioned at least one front return air inlet formed at a front side thereof, the top cover 1021, the at least one front cover group, and the rear wall, the bottom wall, and the lateral two side walls of the freezing inner container 130 together define a cooling compartment.

The number of the front cover groups can be two, and the two front cover groups are distributed along the transverse direction. Fig. 4, 5, 7 and 8 show only one front cover group on the lateral right side, and the front side of each front cover group is formed with the aforementioned at least one front return air inlet.

As shown in fig. 4, two front return air inlets, which are respectively designated as a first front return air inlet 102a and a second front return air inlet 102b, are formed at the front side of each front cover group.

As shown in fig. 7 and 8, each front cover group includes a front escutcheon 1022 and a front air duct cover 1023, a front end portion 10221 of the front escutcheon 1022 is located in front of a front end of the evaporator 101, the front end portion 10221 is spaced from the front end of the evaporator 101, a front wall of the front end portion 10221 of the front escutcheon 1022 is formed with a first opening 1022a, and a rear side of the front end portion 10221 of the front escutcheon 1022 is open; the front end portion 10231 of the front air duct cover 1023 is located at the front end of the evaporator 101, and the front end portion 10231 of the front air duct cover 1023 is inserted forward into the front trim cover 1022 from the rear side opening of the front end portion 10221 of the front trim cover 1022 to divide the first opening 1022a into a first front return air inlet 102a located below and a second front return air inlet 102b located above.

Specifically, the bottom wall of the front end portion 10231 of the front air duct cover 1023 and the bottom wall of the front end portion 10221 of the front decorative cover 1022 define a first return air passage penetrating the first front return air inlet 102a, and the first return air passage is located in front of the evaporator 101, that is, the front end portion 10231 of the front air duct cover 1023 is inserted into the front decorative cover 1022 from the rear side opening of the front end portion 10221 of the front decorative cover 1022 at a position such that the bottom wall of the front end portion 10231 of the front air duct cover 1023 and the bottom wall of the front end portion 10221 of the front decorative cover 1022 are spaced apart from each other to form a first return air passage penetrating the first front return air inlet 102a, so that at least a part of the return air flow entering the first return air passage through the first front return air inlet 102a enters the evaporator 101 from the front of the evaporator 101 to be cooled by the evaporator 101.

A second opening 1023a penetrating the second front return air inlet 102b is formed in an upper section of the front air duct cover 1023 at the front end 10231, and the second opening 1023a is located above and in front of the evaporator 101. The lower surface of the top cover 1021 is spaced apart from the upper surface of the evaporator 101, and the front end of the top cover 1021 is located above and behind the front end of the evaporator 101, that is, the top cover 1021 does not completely shield the upper surface of the evaporator 101. And, a wind shielding material (not shown) is filled between the lower surface of the top cover 1021 and the upper surface of the evaporator 101, as shown in fig. 8, the top cover 1021 and the upper surface of the evaporator 101 are distributed at an interval to form a space 102c, and the space 102c is filled with a wind shielding material (the filled wind shielding material is hidden in fig. 2), which may be a wind shielding foam.

The front air duct cover 1023 includes a first shielding portion 10232 located at the rear upper side of the second opening 1023a, the rear end of the first shielding portion 10232 abuts against the front end of the top cover 1021 to seal the portion of the upper surface of the evaporator 101 not shielded by the top cover 1021, so that a second return air passage penetrating the second opening 1023a and the second front return air inlet 102b is formed between the first shielding portion 10232 and the upper surface of the evaporator 101, and at least a part of the return air flow entering the second return air passage through the second front return air inlet 102b enters the evaporator 101 from above the evaporator 101 to be cooled by the evaporator.

Since the space 102c between the top cover 1021 and the top surface of the evaporator 101 is filled with a wind shielding material, the return air flow entering the second return air passage is prevented from flowing directly backward without passing through the evaporator 101, so that the return air flow entering the second return air passage flows downward from the top surface of the evaporator 101 into the evaporator 101.

The front cover 1022 includes a second shielding portion 10222 bent and extended from the upper edge of the rear side of the front end portion 10221 to the upper rear side, the second shielding portion 10222 is located above the first shielding portion 10232 and extends to overlap with the upper surface of the top cover 1021 to completely shield the upper side of the first shielding portion 10232, and the shape of the second shielding portion 10222 is matched with the shape of the first shielding portion 10232, so that the second shielding portion 10222 is tightly matched with the first shielding portion 10232 to avoid air leakage.

If the front end face of the evaporator 101 is not frosted or the frosting amount is small, so that the front end face of the evaporator 101 can still pass through the airflow, a part of the return air flow of the freezing chamber 132 enters the first return air channel through the first front return air inlet 102a, a part of the return air flow of the freezing chamber enters the second return air channel through the second front return air inlet 102b, a part of the airflow entering the first return air channel enters the evaporator 101 from the front side of the evaporator 101 (i.e. from the front end face of the evaporator 101), is cooled by the evaporator 101, another part of the airflow entering the first return air channel further flows upwards to the second return air channel, and then flows downwards to the evaporator 101 from the second return air channel, so that a part of the return air flow enters the evaporator 101 from the front side of the evaporator 101, and a part of the return air flow enters the evaporator 101 from the upper side of the evaporator 101, thereby ensuring sufficient heat exchange between the return air flow and the evaporator 101, the refrigerating effect of the refrigerator 10 is improved.

If the front end of the evaporator 101 is frosted more heavily and the airflow cannot enter the evaporator 101, the return air flow of the freezing chamber 132 can enter the second return air channel through the second front return air inlet 102b located above, and then flow downward through the second return air channel, and enter the evaporator 101 from the upper surface of the evaporator 101 for cooling, so that the refrigeration effect of the refrigerator 10 can still be ensured.

In the refrigerator 10 of the embodiment, the structures of the top cover 1021, the front trim cover 1022 and the front air duct cover 1023 are specially designed, so that the heat exchange efficiency between the return air flow of the freezing chamber 132 and the evaporator 101 is ensured, and the refrigeration effect of the refrigerator 10 is improved; moreover, when the front end face of the evaporator 101 frosts, the return air flow can still be ensured to enter the evaporator 101 to be cooled by the evaporator 101, so that the problem that the refrigeration effect is reduced due to frosting of the evaporator 101 in the existing refrigerator 10 is solved, and the overall performance of the refrigerator 10 is improved.

In the refrigerator 10 described above, when the continuous operation time of the refrigerator 10 is too long, frost is generated in an upstream portion (hereinafter, referred to as a first half portion) of the evaporator 101 in the flow direction of the cooling air flow, and the heat exchange efficiency of the evaporator 101 is reduced by the accumulation of the frost. The reduction of the heat exchange efficiency is caused by two reasons, on one hand, the frost can block the flow channel of the cooling air flow, and a larger wind resistance is formed; on the other hand, the frost coats the outer surface of the evaporator 101, making it difficult for the circulating air flow to sufficiently exchange heat with the refrigerant in the evaporator 101.

Through experimental observation, the frost quantity of the front half part of the evaporator 101 is larger, and the frost quantity of the rear half part of the evaporator is smaller, so that the heat exchange efficiency of the front half part is lower, and the heat exchange efficiency of the rear half part is higher. In one embodiment, as shown in fig. 12 to 16, the evaporator 300 may be divided into two parts, i.e., a first heat exchanging part 310 and a second heat exchanging part 320, and the blower fan 330 is located downstream of the first heat exchanging part 310 and upstream of the second heat exchanging part 320 on the flow path of the circulating air flow. That is, the circulating air flows to the air supply fan 330 after heat exchange by the first heat exchanging part 310 and is pushed to the second heat exchanging part 320 by the air supply fan 330. On the one hand, compared with the structure that the air supply fan 330 is arranged at the downstream of the evaporator 300 as shown in fig. 6, the air supply fan 330 is closer to the part of the evaporator 300 where the frost accumulation amount is large, the suction effect generated to the air flow is more obvious, and the wind resistance effect generated due to the frost blockage is reduced. On the other hand, since the temperature of the circulating air flow is decreased once after the circulating air flow exchanges heat with the first heat exchanging portion 310, and the temperature between the first heat exchanging portion 310 and the second heat exchanging portion 320 is gradually decreased, the temperature of the circulating air flow can be decreased to a certain extent while the circulating air flow flows from the first heat exchanging portion 310 to the second heat exchanging portion 320, so that the amount of frost formed on the second heat exchanging portion 320 when the circulating air flow passes through the second heat exchanging portion 320 is significantly decreased, that is, compared to the structure in which the air supply fan 330 is disposed at the downstream of the evaporator 300, the amount of frost formed on the first heat exchanging portion 310 and the second heat exchanging portion 320 is decreased, and the amount of frost is decreased, so that the circulating air flow can exchange heat with the refrigerant in the evaporator 300 more sufficiently.

In summary, the evaporator 300 is divided into the first heat exchanging portion 310 and the second heat exchanging portion 320, and the blower fan 330 is located downstream of the first heat exchanging portion 310 and upstream of the second heat exchanging portion 320 in the flow path of the circulating air flow, so that the heat exchange efficiency of the entire evaporator 300 can be improved in two ways.

The first heat exchanging portion 310 and the second heat exchanging portion 320 may be separate two portions, or may be integrally provided ("integrally provided" means that the circulation lines of the first heat exchanging portion 310 and the second heat exchanging portion 320 are connected in series or in parallel, and both share the same refrigerant). When the first heat exchanging part 310 and the second heat exchanging part 320 are integrated, as shown in fig. 16, a receiving chamber may be provided in the lateral middle of the evaporator 300, and the blower fan 330 may be disposed in the receiving chamber. When the first heat exchanging part 310 and the second heat exchanging part 320 are two separate bodies, as shown in fig. 15, the temperature of the refrigerant in the first heat exchanging part 310 may be always lower than the temperature of the refrigerant in the second heat exchanging part 320, the temperature of the circulating air after heat exchange with the first heat exchanging part 310 may be lower, and the amount of frost formed on the second heat exchanging part 320 may be further reduced, so that the first heat exchanging part 310 mainly functions to prevent excessive frost from being formed on the second heat exchanging part 320, and the second heat exchanging part 320 mainly functions to exchange heat with the circulating air.

Since the evaporator 300 and the air supply fan 330 are both disposed in the bottom space of the freezing inner container 130, in order to not occupy the storage space of the freezing inner container 130, the first heat exchanging portion 310, the air supply fan 330 and the second heat exchanging portion 320 may be located in the same horizontal plane, specifically, the first heat exchanging portion 310, the air supply fan 330 and the second heat exchanging portion 320 may be co-linearly arranged in the same horizontal plane, and the flow direction of the air flow generated by the air supply fan 330 may be parallel to the straight line where the first heat exchanging portion 310, the air supply fan 330 and the second heat exchanging portion 320 are co-located.

When the evaporator 300 has two heat exchanging parts, the condensed water on the evaporator 300 has two falling positions. In order to better collect the condensed water falling down when the evaporators 300 are defrosted, in one embodiment, a water collecting tray may be separately provided under each evaporator 300, that is, a first water collecting tray 351 is provided under the first heat exchanging part 310, the first water collecting tray 351 is configured to collect and discharge the condensed water generated on the first heat exchanging part 310, a second water collecting tray 352 is provided under the second heat exchanging part 320, and the second water collecting tray 352 is configured to collect and discharge the condensed water generated on the second heat exchanging part 320. Of course, in other embodiments, one water collecting tray may be used to collect the condensed water on the first heat exchanging portion 310 and the second heat exchanging portion 320 at the same time. It should be noted that the water collection tray is used to collect and discharge condensed water or residual frost falling from the evaporator 300, and any structure capable of performing the above functions can be used as the water collection tray. The water collection tray is not necessarily a separate plate-type component, and for example, as shown in fig. 12 to 14, the bottom plate of the freezing chamber 130 is punched in a depressed structure for collecting and discharging the condensed water on the evaporator 300, so the bottom plate of the freezing chamber 130 may also be referred to as a water collection tray.

As shown in fig. 9 and 11, the refrigerator 10 has a compressor compartment 200 therein, and the compressor compartment 200 is disposed at a rear end of a bottom of the refrigerator 10, and has a compressor 240, a condenser 220, and a cooling fan 330 disposed therein. As shown in fig. 10, the compressor compartment 200 further has an air inlet 251 and an air outlet 252, and the cooling fan 330 generates an air flow for cooling the compressor 240 and the condenser 220 in the compressor compartment 200, the air flow enters the compressor compartment 200 through the air inlet 251, and exits the refrigerator 10 through the condenser 220, the cooling fan 330 and the compressor 240 in sequence and the air outlet 252. As shown in fig. 12, the refrigerator 10 further includes an evaporation pan 210 and a drain passage 340, and the drain passage 340 is used to transfer the condensed water collected by the first and second water collection pans 351 and 352 into the evaporation pan 210. In particular, in order to rapidly evaporate the condensed water accumulated in the evaporation pan 210, the evaporation pan 210 may be disposed below or above the condenser 220 of the compressor compartment 200 of the refrigerator 10, so that the heat generated on the condenser 220 may accelerate the evaporation rate of the condensed water in the evaporation pan 210.

When the evaporation pan 210 is installed in the compressor compartment 200, the drain channel 340 needs to extend from the cooling chamber into the compressor compartment 200, and in order to prevent the drain channel 340 from interfering with other parts of the refrigerator 10, the drain channel 340 is difficult to be made in a straight line shape, and when the drain channel 340 is bent, the block-shaped frost falling from the evaporator 300 is easily blocked at the bent part of the drain channel 340, so that the condensed water cannot be discharged. In order to solve the above-mentioned problems, as shown in fig. 13 to 14, evaporation pans 210 may be disposed directly under first water collection pan 351 and second water collection pan 352 (the number of evaporation pans 210 may be one or two, and when evaporation pans 210 are one, they are disposed directly under first water collection pan 351 and second water collection pan 352 and collect condensed water in first water collection pan 351 and second water collection pan 352 at the same time; when evaporation pans 210 are two, one evaporation pan 210 is disposed directly under first water collection pan 351 and the other evaporation pan 210 is disposed directly under second water collection pan 352), and the evaporation pan 210 is disposed at the bottom of the whole refrigerator 10, the drain passage 340 includes two drain lines, and the two drain lines respectively correspond one-to-one to guide the condensed water collected in the first water collection tray 351 and the second water collection tray 352 to the evaporation pan 210 along a downward vertical straight line, so that the blockage in the drain lines can be effectively prevented.

Further, in order to accelerate the evaporation rate of the condensed water in the evaporation pan 210, the air outlet 252 of the compressor compartment 200 may be disposed at the bottom of the refrigerator 10, and configured to blow the airflow blown out from the air outlet 252 of the compressor compartment 200 toward the evaporation pan 210 located directly below the first water collection tray 351 and the second water collection tray 352. Thus, the hot air blown out from the air outlet 252 can effectively increase the evaporation rate of the evaporation pan 210.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A refrigerator having a blower fan located in the middle of an evaporator, comprising:

an evaporator disposed in the cooling chamber and configured to cool an air flow entering the cooling chamber to form a cooled air flow, the evaporator including a first heat exchanging portion and a second heat exchanging portion, the first heat exchanging portion and the second heat exchanging portion being integrally disposed;

and the air supply fan is positioned on the downstream of the first heat exchanging part and the upstream of the second heat exchanging part on the airflow flow path and is configured to promote the cooling air to flow to at least one storage compartment.

2. The refrigerator of claim 1, wherein

The first heat exchanging part, the second heat exchanging part and the air supply fan are arranged in a straight line; or

The first heat exchanging part, the second heat exchanging part and the air supply fan are arranged in a straight line, the straight line extends horizontally, and the flowing direction of air flow generated between the first heat exchanging part and the second heat exchanging part by the air supply fan is parallel to the straight line.

3. The refrigerator of claim 1, wherein

A first water collecting tray is arranged below the first heat exchanging part and is configured to collect and discharge condensed water generated on the first heat exchanging part;

a second water collecting tray is disposed below the second heat exchanging portion, and configured to collect and discharge condensed water generated on the second heat exchanging portion.

4. The refrigerator of claim 3, further comprising:

the evaporating dish is arranged below the condenser of the refrigerator;

a drain channel configured to convey the condensed water in the first and second water collection trays into the evaporation pan.

5. The refrigerator of claim 3, wherein

The refrigerator also comprises an evaporation pan and a drainage channel, wherein the evaporation pan is arranged below the first water collecting tray and the second water collecting tray, and the drainage channel is configured to vertically and linearly convey condensed water in the first water collecting tray and the second water collecting tray downwards into the evaporation pan; or

The refrigerator also comprises two evaporation pans and a drainage channel, wherein one evaporation pan is arranged below the first water collecting tray, the other evaporation pan is arranged below the second water collecting tray, and the drainage channel is configured to convey condensed water in the first water collecting tray and the second water collecting tray into the two evaporation pans in a straight line in a one-to-one correspondence mode.

6. The refrigerator of claim 5, further comprising:

a compressor compartment having a condenser, a cooling fan, and a compressor disposed therein, the compressor compartment further having an air inlet and an air outlet, the cooling fan being configured to generate an air flow entering the compressor compartment from the air inlet and discharging from the air outlet;

wherein the air exhaust outlet is configured to direct an air flow exiting the compressor compartment toward the evaporator pan.

7. The refrigerator of claim 1, wherein

The box body comprises a freezing inner container positioned at the lowest part, and the cooling chamber is limited in the freezing inner container;

8. The refrigerator of claim 7, wherein

At least one front return air inlet communicated with the freezing chamber is formed in the front side of the cooling chamber, so that return air flow of the freezing chamber enters the cooling chamber through the at least one front return air inlet to be cooled.

9. The refrigerator of claim 8, further comprising:

a top cover positioned above the evaporator;

at least one front cover group, wherein the front side of each front cover group is provided with at least one front return air inlet;

the top cover, the at least one front cover group and the rear wall, the bottom wall and the two transverse side walls of the freezing inner container jointly limit the cooling chamber.

10. The refrigerator of claim 9, wherein

The number of the front return air inlets is two, and the two front return air inlets are respectively marked as a first front return air inlet and a second front return air inlet;

the front cover group includes:

a front trim cover having a front end portion positioned in front of the front end of the evaporator and spaced apart from the front end of the evaporator, a front wall of the front end portion having a first opening formed therein, and a rear side of the front end portion being open;

and the front end part of the front air channel cover is positioned at the front end of the evaporator, and the front end part of the front air channel cover is inserted into the front decorative cover forwards from the rear open part of the front end part of the front decorative cover so as to divide the first opening into a first front return air inlet positioned below and a second front return air inlet positioned above.