Refrigeration equipment

Abstract

The utility model relates to the field of electric appliances, and particularly discloses refrigeration equipment, which comprises a box body, a first chamber and a second chamber formed in the box body, an evaporation chamber arranged in the first chamber, an evaporator arranged in the evaporation chamber, and an air return duct assembly, the air return duct assembly comprises an air duct body communicating with the second chamber and the evaporation cavity and an air blocking structure arranged in the air duct body and close to the evaporation cavity, and the air blocking structure is arranged to only allow airflow to flow to the evaporation cavity from the second chamber. According to the refrigeration equipment provided by the utility model, the problems of condensation and freezing in the second chamber caused by the fact that cold air at the evaporator reversely enters the second chamber can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of electrical appliances, in particular to a refrigeration device. Background Art

[0002] In a single-system refrigerator, there is only one evaporator and the evaporator is generally located in the freezer compartment. In order to cool the refrigerator compartment, the cold air generated at the evaporator is driven by a fan and enters the refrigerator compartment from the freezer compartment through the air supply duct assembly, and then returns to the freezer compartment from the refrigerator compartment through the return air duct assembly, thus forming an air circulation. Since the return air duct assembly connects the evaporators of the refrigerator compartment and the freezer compartment, and the temperature at the evaporator is relatively low (can reach minus 30°), the cold air at the evaporator enters the refrigerator compartment in the reverse direction through the return air duct, which will make the temperature of the refrigerator compartment near the return air duct below 0°, thereby causing condensation and ice formation in the refrigerator compartment. Utility Model Content

[0003] The utility model aims to provide a refrigeration device which can prevent the cold air at the evaporator from entering the refrigerated compartment in reverse direction through the return air duct component.

[0004] To achieve the above-mentioned purpose, the utility model proposes a refrigeration device, including a box body, a first chamber and a second chamber formed in the box body, an evaporation chamber arranged in the first chamber, and an evaporator arranged in the evaporation chamber. The refrigeration device also includes a return air duct assembly, the return air duct assembly includes a duct body connecting the second chamber and the evaporation chamber, and a wind shield structure arranged in the duct body and close to the evaporation chamber, wherein the wind shield structure is arranged to only allow airflow to flow from the second chamber to the evaporation chamber.

[0005] As a further improvement of the present utility model, the wind shielding structure includes a baffle arranged in the air duct main body, the air duct main body includes a connecting portion protruding from its inner wall surface, the baffle is rotatably connected to the connecting portion, and a blocking portion is also formed on the connecting portion for supporting the baffle so that the airflow flowing from the evaporation chamber to the second chamber cannot blow the baffle.

[0006] As a further improvement of the present invention, the blocking portion is located on a side of the baffle plate close to the second chamber, and the rotation axis of the baffle plate is located above the blocking portion.

[0007] As a further improvement of the utility model, the wind shield structure includes a baffle fixed in the air duct main body, at least two vents opened on the baffle, and at least two flaps corresponding to each vent close to the evaporation chamber side and rotatably connected to the baffle, the flap having a first position in which it is attached to the baffle to cover the corresponding vent, and a second position in which the vent is opened after flipping from the first position, and when the flap is in the first position, a partial area thereof is against the baffle.

[0008] As a further improvement of the present utility model, the first chamber and the second chamber are arranged in the transverse direction, the air duct main body includes an upper wall and a lower wall of the air duct arranged opposite to each other in the up and down directions, and a connecting wall connecting the upper wall and the lower wall of the air duct, the upper wall and the lower wall of the air duct are both inclined relative to the horizontal plane, and a gap is formed between the bottom end of the baffle and the lower wall of the air duct.

[0009] As a further improvement of the present utility model, the refrigeration equipment includes a first inner liner and a second inner liner that respectively form the first chamber and the second chamber, the first inner liner and the second inner liner both include an inner liner upper wall and an inner liner lower wall that are relatively arranged in the up and down directions, and two inner liner side walls that are relatively arranged in the transverse direction, and a first opening and a second opening are respectively opened on the two inner liner side walls that are respectively located on the first inner liner and the second inner liner and are close to each other, the first opening is connected to the evaporation chamber, the second opening is connected to the second chamber, and the air duct main body is connected to the first opening and the second opening.

[0010] As a further improvement of the utility model, the air duct main body further comprises two edges respectively connected to the two ends in the length direction thereof, and the two edges are respectively attached to the outer wall surfaces of the first inner liner and the second inner liner.

[0011] As a further improvement of the present invention, the lower wall of the first inner liner is funnel-shaped, and a drainage port is provided in the middle of the lower wall of the first inner liner.

[0012] As a further improvement of the utility model, a heating element is provided on the evaporator.

[0013] As a further improvement of the present invention, the refrigeration device also includes a heat conductive member arranged at the first opening, the heat conductive member is at least partially attached to the inner wall surface of the first inner tank and the inner wall surface of the air duct body, and the baffle is arranged close to the heat conductive member.

[0014] Beneficial effects of the utility model:

[0015] The utility model provides a refrigeration device, wherein a wind shielding structure is arranged on one side of an air duct main body close to an evaporation chamber, and the wind shielding structure is arranged to only allow airflow from a second chamber to flow to the evaporation chamber, so that the problem of condensation and ice in the second chamber caused by the cold air at the evaporator entering the second chamber in the reverse direction can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view schematic diagram of the structure of a refrigeration device provided in the first embodiment of the utility model;

[0017] Figure 2A rear structural schematic diagram of a refrigeration device provided in the first embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the explosion structure of a refrigeration device provided in the first embodiment of the utility model;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure of the first inner liner;

[0020] Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure of the center return air duct assembly;

[0021] Figure 6 for Figure 2 Schematic diagram of the internal structure of the center return air duct assembly;

[0022] Figure 7 for Figure 3 A schematic diagram of the structure of the first inner tank and the heat conducting member;

[0023] Figure 8 This is a schematic structural diagram of a return air duct assembly in a second embodiment of the present utility model;

[0024] Fig. 9 for Figure 8 A schematic diagram of the structure of the middle baffle;

[0025] Fig.10 for Figure 8 Structural schematic diagram of the middle windshield structure. DETAILED DESCRIPTION

[0026] The terms used herein, such as "upper", "lower", "left", "right", "front", "back", etc., which indicate relative spatial positions, are used for the purpose of convenience to describe the relationship between one feature and another feature as shown in the accompanying drawings. It is understood that, depending on the placement of the product, the terms of relative spatial positions may be intended to include different orientations other than those shown in the drawings, and should not be construed as limitations on the claims. In addition, the descriptor "horizontal" used herein is not completely equivalent to being perpendicular to the direction of gravity, and a certain angle of inclination is allowed.

[0027] like Figure 1-7As shown, the first embodiment of the utility model provides a refrigeration device 100, which includes a box body 10, a first chamber 1 and a second chamber 2 formed in the box body 10, an evaporation chamber 11 arranged in the first chamber 1, and an evaporator (not shown in the figure) arranged in the evaporation chamber 11. In this embodiment, the first chamber 1 is a freezing chamber, and the second chamber 2 is a refrigeration chamber. The cold air generated at the evaporator in the evaporation chamber 11 is used to cool the first chamber 1, and flows from the first chamber 1 to the second chamber 2 through an air supply duct assembly (not shown in the figure) connecting the first chamber 1 and the second chamber 2 to cool the second chamber 2. The refrigeration device 100 also includes a return air duct assembly 3 connecting the second chamber 2 and the evaporation chamber 11, so that the cold air in the second chamber 2 returns to the evaporation chamber 11 to form an air path circulation. Generally, the air supply duct assembly is arranged above the return air duct assembly 3. In other embodiments, the second chamber 2 can also be a variable temperature chamber.

[0028] The return air duct assembly 3 includes an air duct body 31 connecting the second chamber 2 and the evaporation chamber 11, and a wind shielding structure 32 arranged in the air duct body 31. The cold air in the second chamber 2 can return to the evaporation chamber 11 through the air duct body 31 to contact the evaporator. The air duct body 31 is in the shape of a cylinder with two ends connected. The wind shielding structure 32 is arranged close to the evaporation chamber 11 and is arranged to only allow airflow from the second chamber 2 to the evaporation chamber 11, so as to prevent the cold air in the evaporation chamber 11 from flowing back to the second chamber 2 through the air duct body 31.

[0029] The wind shielding structure 32 includes a baffle 321 disposed in the air duct body 31. The air duct body 31 includes a connecting portion 311 formed by protruding from its inner wall surface. The baffle 321 is rotatably connected to the connecting portion 311, and a blocking portion 312 is formed on the connecting portion 311 for resisting the baffle 321 so that the airflow from the evaporation chamber 11 to the second chamber 2 cannot blow the baffle 321. With this design, the cold air flowing from the second chamber 2 to the evaporation chamber 11 can blow the baffle 321 and pass through the air duct body 31, and the cold air flowing from the evaporation chamber 11 to the second chamber 2 cannot blow the baffle 321 and cannot pass through the air duct body 31.

[0030] In this embodiment, the blocking portion 312 is located on the side of the baffle 321 close to the second chamber 2, and the rotation axis of the baffle 321 should be located above the blocking portion 312. Specifically, the baffle 321 includes a baffle body 3211, a rotation shaft portion 3212 protruding from both ends of the baffle body 3211 in the width direction, a connecting hole 3111 is provided on the connecting portion 311 to be rotatably connected to the rotation shaft portion 3212, and the rotation shaft portion 3212 is rotatably connected to the connecting hole 3111. In other embodiments, the rotation axis of the baffle 321 can also be located below the blocking portion 312, in which case the blocking portion 312 should be located on the side of the baffle 321 close to the evaporation chamber 11.

[0031] In order to make the baffle plate 321 easily blown by the cold wind flowing from the second chamber 2 to the evaporation chamber 11, the baffle plate 321 is preferably made of a lighter foam material such as EPS or EPP.

[0032] The first chamber 1 and the second chamber 2 are arranged in the transverse direction, and the air duct body 31 includes an upper wall 314 and a lower wall 313 of the air duct arranged in a vertical direction, and a connecting wall 315 connecting the upper wall 314 and the lower wall 313 of the air duct. The upper wall 314 and the lower wall 313 of the air duct are both arranged to be inclined relative to the horizontal plane, so that the water droplets condensed in the air duct body 31 can flow to the first chamber 1 or the second chamber 2. Generally, in the direction in which the second chamber 2 approaches the first chamber 1, the upper wall 314 and the lower wall 313 of the air duct are both arranged to be inclined downward, so that the water droplets condensed in the air duct can flow to the first chamber 1. A gap 4 is formed between the bottom end of the baffle 321 and the lower wall 313 of the air duct, and the gap 4 should have a sufficient height for the water droplets to pass through, so as to avoid the water droplets being blocked by the baffle 321 and freezing to form ice blockage.

[0033] The refrigeration device 100 includes a first liner 5 and a second liner 6 that respectively form a first chamber 1 and a second chamber 2. The first liner 5 and the second liner 6 both include an liner upper wall and a liner lower wall 52 that are arranged oppositely in the up-down direction, and two liner side walls 53 that are arranged oppositely in the transverse direction. The two liner side walls 53 that are respectively located on the first liner 5 and the second liner 6 and are close to each other are respectively provided with a first opening 54 and a second opening 61. The first opening 54 is connected to the evaporation chamber 11, and the second opening 61 is connected to the second chamber 2. The air duct body 31 is connected to the first opening 54 and the second opening 61. The first liner 5 may also include an liner rear wall located at the rear side thereof. The evaporation chamber 11 is formed by the liner rear wall and the air duct cover plate located at the front side of the liner rear wall. In this embodiment, the air duct body 31 is located between the first liner 5 and the second liner 6 in the transverse direction, rather than being located at the rear side of the first liner 5 or the second liner 6, so as to avoid an increase in the overall thickness of the refrigeration device 100.

[0034] The lower wall 52 of the first inner liner 5 is funnel-shaped, and a drain port 521 is provided in the middle of the lower wall 52 of the first inner liner 5. The defrost water in the first chamber 1 and the water drops flowing into the first chamber 1 from the air duct body 31 can be discharged to the outside of the refrigeration device 100 from the drain port 521. The lower wall 52 of the first inner liner 5 in the funnel shape includes a plurality of inclined surfaces, and the angle between the inclined surfaces and the horizontal plane should be greater than 6°.

[0035] Furthermore, the air duct body 31 further includes two edges 316 respectively connected to the two ends in the length direction thereof, and the two edges 316 are respectively attached to the outer wall surfaces of the first inner liner 5 and the second inner liner 6, so as to prevent the foaming material from overflowing into the air duct body 31 and the first chamber 1 and the second chamber 2. The air duct body 31 can be designed in two halves, that is, the air duct body 31 is formed by connecting two shells.

[0036] Water droplets on and around the baffle 321 may condense into ice, so in this embodiment, a heating element is provided on the evaporator, and since the baffle 321 is provided near the evaporation chamber 11, the heat radiation of the heating element can melt the ice on and around the baffle 321. The heating element may be a heating wire that generates heat through electricity.

[0037] Furthermore, the refrigeration device 100 also includes a heat conductive member 7 arranged at the first opening 54, and the heat conductive member 7 is at least partially attached to the inner wall surface of the first inner tank 5 and the inner wall surface of the air duct body 31. The baffle 321 is arranged close to the heat conductive member 7. The heat conductive member 7 can absorb the heat radiation of the heating element and conduct it to the vicinity of the baffle 321, so that the baffle 321 and the surrounding ice can melt as soon as possible.

[0038] like Figure 8-10 As shown, in the second embodiment of the utility model, the wind shielding structure 32 can also be arranged as follows: the wind shielding structure 32 includes a baffle 321 fixed in the air duct body 31, at least two vents 322 opened from the baffle 321, and at least two flaps 323 corresponding to each vent 322 close to the evaporation chamber 11 and rotatably connected to the baffle 321. The baffle 321 cannot rotate in the air duct body 31, and the flap 323 has a first position that fits the baffle 321 to cover the corresponding vent 322, and a second position that opens the vent 322 after flipping from the first position, and when the flap 323 is in the first position, a part of its area abuts against the baffle 321, so that the cold air flowing from the evaporation chamber 11 to the second chamber 2 cannot blow the flap 323 and cannot pass through the air duct body 31, while the cold air flowing from the second chamber 2 to the evaporation chamber 11 can blow the flap 323 and pass through the air duct body 31. The windshield structure 32 adopts the design of the second embodiment, and the flap 323 is light in weight and easily blown and turned. In this embodiment, three vents 322 are specifically provided along the up and down directions, and the number of flaps 323 corresponds to the number of vents 322, and three are also provided.

[0039] The other structures in the second embodiment of the present invention may be the same as those in the first embodiment, and will not be described in detail herein.

[0040] In summary, the utility model provides a refrigeration device 100, wherein a wind shielding structure 32 is provided on one side of the air duct body 31 close to the evaporation chamber 11, and the wind shielding structure 32 is configured to only allow airflow from the second chamber 2 to flow to the evaporation chamber 11, so that the problem of condensation and icing in the second chamber 2 caused by the cold air at the evaporator entering the second chamber 2 in the reverse direction can be avoided.

[0041] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0042] The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A refrigeration device, comprising a housing, a first chamber and a second chamber formed in the housing, an evaporation chamber arranged in the first chamber, and an evaporator arranged in the evaporation chamber, characterized in that: The refrigeration device also includes a return air duct assembly, which includes a duct body connecting the second chamber and the evaporation chamber, and a wind shielding structure arranged in the duct body and close to the evaporation chamber, wherein the wind shielding structure is arranged to only allow airflow from the second chamber to flow to the evaporation chamber.

2. The refrigeration equipment according to claim 1, characterized in that: The wind shielding structure includes a baffle plate arranged in the air duct main body, the air duct main body includes a connecting portion protruding from its inner wall surface, the baffle plate is rotatably connected to the connecting portion, and a blocking portion is also formed on the connecting portion for resisting the baffle plate so that the airflow flowing from the evaporation chamber to the second chamber cannot blow the baffle plate.

3. The refrigeration equipment according to claim 2, characterized in that: The blocking portion is located on a side of the baffle plate close to the second chamber, and the rotation axis of the baffle plate is located above the blocking portion.

4. The refrigeration equipment according to claim 1, characterized in that: The wind shielding structure includes a baffle fixed in the air duct body, at least two vents opened on the baffle, and at least two flaps corresponding to each vent close to the evaporation chamber and rotatably connected to the baffle. The flap has a first position where it fits the baffle to cover the corresponding vent, and a second position where the vent is opened after flipping from the first position. When the flap is in the first position, a partial area of ​​the flap is against the baffle.

5. The refrigeration device according to any one of claims 2 to 4, characterized in that: The first chamber and the second chamber are arranged in the transverse direction, the air duct body includes an upper wall and a lower wall of the air duct arranged opposite to each other in the up-down direction, and a connecting wall connecting the upper wall of the air duct and the lower wall of the air duct, the upper wall of the air duct and the lower wall of the air duct are both inclined relative to the horizontal plane, and a gap is formed between the bottom end of the baffle and the lower wall of the air duct.

6. The refrigeration device according to claim 5, characterized in that: The refrigeration device includes a first liner and a second liner that respectively form the first chamber and the second chamber, the first liner and the second liner both include an liner upper wall and an liner lower wall that are oppositely arranged in the up-down direction, and two liner side walls that are oppositely arranged in the lateral direction, and a first opening and a second opening are respectively opened on two liner side walls that are respectively located on the first liner and the second liner and are close to each other, the first opening is connected to the evaporation chamber, the second opening is connected to the second chamber, and the air duct main body is connected to the first opening and the second opening.

7. The refrigeration device according to claim 6, characterized in that: The air duct body also includes two edges respectively connected to the two ends of the air duct body in the length direction, and the two edges are respectively attached to the outer wall surfaces of the first inner liner and the second inner liner.

8. The refrigeration device according to claim 6, characterized in that: The lower wall of the first inner liner is funnel-shaped, and a drainage port is provided in the middle of the lower wall of the first inner liner.

9. The refrigeration device according to claim 6, characterized in that: The evaporator is provided with a heating element.

10. The refrigeration device according to claim 9, characterized in that: The refrigeration device further comprises a heat conducting member arranged at the first opening, wherein the heat conducting member is at least partially attached to the inner wall surface of the first inner tank and the inner wall surface of the air duct body, and the baffle is arranged close to the heat conducting member.

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