Air duct assembly and refrigeration equipment

Abstract

The utility model discloses an air duct assembly and refrigeration equipment, when a fan of the air duct assembly works, an air door is opened to an open state under the action of airflow generated by the fan, and the fan is communicated with an airflow channel; when the fan stops working, the air door is in a shielding state under the action of the gravity of the air door, and the fan and the airflow channel are isolated by the air door. The air flue assembly and the air door of the refrigeration equipment do not need an external power supply, so that the cost of the air door can be very low, the problem that heat for heating the fan is transferred to the airflow channel and then enters the refrigeration chamber during defrosting can be avoided, the structure of the air flue assembly simultaneously meets the design requirements for arranging the air door and low cost, and the air flue assembly is suitable for popularization and application. And the market competitiveness of the refrigeration equipment with the air duct assembly is higher.

Description

Technical Field

[0001] The utility model relates to an air duct component, in particular to a refrigeration device with the air duct component. Background Art

[0002] At present, the dampers installed in the air duct components are generally electric. They are driven to open when they need to be opened and to close when they need to be closed. Correspondingly, they need to be configured with a drive module, a power supply module, a control module, etc. For low-priced refrigeration equipment, dampers with these functions increase the cost burden. However, if the damper is not installed, when defrosting is required in the refrigeration equipment, the heat generated will pass through the position of the original damper to the refrigeration compartment, thereby heating the refrigeration compartment, which may cause the internal food to thaw or even deteriorate. The high cost of the damper and the many problems caused by not installing the damper have led to design contradictions. Summary of the invention

[0003] In order to solve the problem in the prior art that the damper of the air duct assembly is high in cost and has to be provided, the purpose of the utility model is to provide a lower-cost air duct assembly and a refrigeration device having the air duct assembly.

[0004] To achieve the above-mentioned utility model object, an embodiment of the utility model provides an air duct assembly, comprising an air duct body, a fan disposed in the air duct body and a plurality of air flow channels, the air duct assembly further comprising a damper, the damper being disposed at an air outlet between the fan and the air flow channel, the damper having an open state away from the air outlet, and a shielding state shielding the air outlet;

[0005] When the fan is working, the damper is opened to an open state under the action of the airflow generated by the fan, and the fan and the airflow channel are connected;

[0006] When the fan stops working, the damper is in a shielding state due to its own gravity, and the fan and the air flow channel are isolated by the damper.

[0007] As a further improvement of the present utility model, the damper includes a rotating shaft and a wind shield plate connected to the rotating shaft, the damper is rotatably connected to the air duct assembly via the rotating shaft, and the wind shield plate is used to shield the air outlet.

[0008] As a further improvement of the utility model, the air duct body includes an air duct back plate and an air duct cover plate, the air duct back plate is provided with a fan slot for accommodating a fan, and an air flow channel connected to the fan slot, and the air duct cover plate is covered on the air duct back plate.

[0009] As a further improvement of the utility model, a first shaft groove is set on the air duct back plate, and a second shaft groove is set on the air duct cover plate. One end of the rotating shaft is inserted into the first shaft groove, and the other end is inserted into the second shaft groove.

[0010] As a further improvement of the present invention, the air duct body includes a non-circulation cavity, the non-circulation cavity includes an opening toward the air flow channel, the rotating shaft is arranged in the non-circulation cavity, and the swing range of the damper is limited within the range of the opening.

[0011] As a further improvement of the utility model, the wind shield is provided with a line contact protrusion on the side facing the fan, and when the damper is in a shielding state, the line contact protrusion is in contact with the peripheral line of the air outlet.

[0012] As a further improvement of the present invention, when the damper is in the shielding state, the lowest point of the line contact protrusion is higher than the lowest point of the wind shielding plate.

[0013] As a further improvement of the present invention, a plurality of antifreeze protrusions are provided on the side of the wind shield away from the fan, and when the damper is in an open state, the wind shield abuts against the air duct body through the antifreeze protrusions.

[0014] As a further improvement of the present invention, a plurality of dampers are provided, and the air flow passage corresponding to each damper faces a different direction.

[0015] To achieve one of the purposes of the utility model, an embodiment of the utility model provides a refrigeration device, which includes the above-mentioned air duct assembly.

[0016] Compared with the commonly used technology, the utility model has the following beneficial effects: the air duct assembly and the damper of the refrigeration equipment do not require an external power supply, so the cost of the damper can be very low, and the damper is in an open state by the force of the airflow when the fan is working, and is in a shielded state under the action of its own gravity when the fan is not working, so that the problem of heat heated by the fan being transferred to the air flow channel and then entering the refrigeration chamber during defrosting can be avoided, so the structure of the air duct assembly simultaneously meets the design requirements of setting the damper and low cost, making the refrigeration equipment with the air duct assembly more competitive in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of an air duct assembly of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of an air duct assembly according to an embodiment of the utility model when the fan stops working;

[0019] Figure 3This is a schematic diagram of an air duct assembly according to an embodiment of the utility model when the fan is working;

[0020] Figure 4 It is a structural schematic diagram of a damper of an embodiment of the utility model from one perspective;

[0021] Figure 5 It is a structural schematic diagram of the damper of one embodiment of the utility model from another perspective;

[0022] Figure 6 It is a side view of a damper of an embodiment of the utility model;

[0023] Among them, 100, air duct assembly; 10, air duct body; 11, air duct back plate; 111, air flow channel; 112, fan slot; 113, non-circulation cavity; 12, air duct cover; 121, second shaft slot; 20, fan; 30, damper; 31, wind shield; 311, line contact protrusion; 312, antifreeze protrusion; 32, rotating shaft; S1, shielding state; S2, opening state. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0025] It should be understood that the terms used herein, such as "upper", "above", "lower", "below", etc., indicating spatial relative positions, are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0026] An embodiment of the utility model provides a lower-cost air duct assembly and a refrigeration device having the air duct assembly.

[0027] The refrigeration equipment of this embodiment can be a refrigerator, a freezer, a vertical refrigerator, a wine cabinet, etc. The embodiments below can be described by taking a refrigerator as an example. The refrigerator includes a box body and a door body. The door body and the box body together enclose a refrigeration chamber. An air duct assembly 100 is arranged in the box body. The air duct assembly 100 is used to discharge air. That is to say, the refrigerator of this embodiment is an air-cooled refrigerator. The refrigerator can also include a fan 20 and a defrost module. The air blown by the fan 20 is blown toward the refrigeration chamber through the air duct assembly 100. The surface of the fan 20 may be frosted after long-term operation. The defrost module can heat the fan 20 to melt the frost on its surface. Figure 1 An air duct assembly 100 is shown.

[0028] To clearly express the positions and directions described in this embodiment, in this embodiment, the direction of reference gravity is defined as down, and the opposite direction is up. The door of the refrigerator is located in front of the box body, and the opposite direction is the rear. The user stands in front of the refrigerator, and the two sides in the horizontal direction are the left and right sides respectively.

[0029] The air duct assembly 100 of this embodiment includes an air duct body 10, a fan 20 disposed in the air duct body 10, and a plurality of air flow channels 111. The air duct assembly 100 also includes a damper 30, which is disposed at the air outlet between the fan 20 and the air flow channel 111. The damper 30 has an open state S2 away from the air outlet and a shielding state S1 shielding the air outlet.

[0030] When the fan 20 is working, the damper 30 is opened to the open state S2 under the action of the airflow generated by the fan 20, and the fan 20 and the airflow channel 111 are connected;

[0031] When the fan 20 stops working, the damper 30 is in the shielding state S1 due to its own gravity, and the fan 20 and the air flow channel 111 are isolated by the damper 30 .

[0032] When the fan 20 stops working, the refrigerator may be in a defrosting state. Figure 2 As shown, the damper 30 can be placed on the air outlet under the action of its own gravity, that is, the air outlet can be tilted upward, or in a vertical state, at least not in a downward state, so that the damper 30 can close the air outlet under the action of gravity.

[0033] When the damper 30 is not blown by the air flow blown out by the fan 20, the damper 30 falls downward to the lowest point it can fall to, and the lowest point is designed to close the air outlet.

[0034] When the damper 30 is blown by the airflow from the fan 20, the damper 30 moves upward to the highest point it can reach, which is at least a position that ensures that the air outlet is not blocked by the damper 30. The highest point can be a point where the wind force and the gravity of the damper 30 are balanced, or a position where a limiting structure is set and abuts against the limiting structure.

[0035] When the fan 20 is working, it can be a state where the fan 20 works normally to deliver cold air to the refrigeration room. At this time, under the action of wind force, the damper 30 is blown, that is, the damper 30 will not become an obstacle to the flow of air. When there is no airflow, it will only become an obstacle to heat transfer, thereby improving the refrigeration efficiency of the refrigeration room and the defrosting efficiency of the refrigeration equipment.

[0036] Furthermore, if Figures 1 to 3As shown, the damper 30 includes a shaft 32 and a wind shield 31 connected to the shaft 32. The damper 30 is rotatably connected to the air duct assembly 100 via the shaft 32, and the wind shield 31 is used to shield the air outlet. In other words, the damper 30 switches between the open state S2 and the shielding state S1 by rotating.

[0037] like Figure 1 As shown, the air duct body 10 includes an air duct back plate 11 and an air duct cover plate 12 . The air duct back plate 11 is provided with a fan slot 112 for accommodating the fan 20 and an air flow channel 111 connected to the fan slot 112 . The air duct cover plate 12 is covered on the air duct back plate 11 .

[0038] In addition, multiple dampers 30 are provided, and the air flow channel 111 corresponding to each damper 30 faces different directions. The damper 30 can prevent the diffusion of heat in each direction when the fan 20 stops working, and allow air flow to each direction when the fan 20 is working. Such an air duct assembly 100 adopts a design of multiple dampers 30, in which each damper 30 corresponds to an air flow channel 111 in a different direction. This design is suitable for scenes where the air flow direction needs to be flexibly controlled.

[0039] Furthermore, a first shaft groove is provided on the air duct back plate 11, and a second shaft groove 121 is provided on the air duct cover plate 12. Figure 1 As shown, one end of the rotating shaft 32 is inserted into the first shaft groove, and the other end is inserted into the second shaft groove 121, so as to realize the rotation connection of the damper 30 and ensure the smooth rotation of the damper 30 between the open and closed states. In this way, the damper 30 is assembled between the duct back plate 11 and the duct cover plate 12, that is, a method for installing the damper 30 on the duct body 10 is provided here, which is convenient for installation and production.

[0040] The air duct body 10 includes a non-circulating cavity 113, such as Figure 2 and 3 As shown, the non-circulation cavity 113 includes an opening toward the airflow channel 111, the rotating shaft 32 is arranged in the non-circulation cavity 113, and the swing range of the damper 30 is limited within the range of the opening. The meaning of the non-circulation cavity 113 is that the airflow cannot circulate at this position. The non-circulation cavity 113 has only one opening, and there is no air inlet and air outlet. Since the airflow cannot be formed at this position, the cold air will not enter the non-circulation cavity 113, that is to say, the rotating shaft 32 arranged therein will not be frozen, thereby ensuring its flexible rotation and preventing excessive swinging.

[0041] Furthermore, the wind shield 31 is provided with a line contact protrusion 311 on the side facing the fan 20, such as Figure 4 and 6As shown, when the damper 30 is in the shielding state S1, the line contact protrusion 311 is in line contact with the peripheral edge of the air outlet. In the figure, the line contact protrusion 311 is arranged along a circle of the wind shield plate 31, thereby ensuring the line contact between the wind shield plate 31 and the peripheral edge of the air outlet and ensuring the sealing. In addition, even if there is water on the line contact protrusion 311, since the area of ​​the line contact is very small and the tension of the water is small, it is easier to blow up the damper 30 when the fan 20 rotates.

[0042] When the damper 30 is in the shielding state S1, Figure 6 As shown, the lowest point of the line contact protrusion 311 is higher than the lowest point of the wind shield 31, which can reduce the possibility of water accumulation at the sealing contact position. That is, even if there is dew on the damper 30, the dew will flow to the lowest point of the wind shield 31 instead of the line contact protrusion 311. This ensures that the line contact protrusion 311 will not freeze with the peripheral edge of the air outlet, thereby ensuring the smooth opening and shielding of the damper 30.

[0043] Furthermore, the wind shield 31 is provided with a plurality of antifreeze protrusions 312 on the side away from the fan 20, such as Figure 5 and 6 As shown, the antifreeze protrusion 312 is a spherical protrusion. When the damper 30 is in the open state S2, the wind shield 31 abuts against the air duct body 10 through the antifreeze protrusion 312. Figure 3 As shown, the antifreeze protrusion 312 contacts the air guide ribs at the non-circulation cavity 113 or the air flow channel 111, and the air door 30 is in a stable blowing state. The air door 30 and the air guide ribs are only in point contact to prevent the air door 30 from being frozen when in contact with the air guide ribs.

[0044] Compared with the prior art, this embodiment has the following beneficial effects:

[0045] The air duct assembly 100 and the damper 30 of the refrigeration equipment do not require an external power supply, so the cost of the damper 30 can be very low. The damper 30 is in an open state S2 by the force of the airflow when the fan 20 is working. When the fan 20 is not working, the damper 30 is in a shielding state S1 due to its own gravity. In this way, the problem of heat from heating the fan 20 being transferred to the air flow channel 111 and then entering the refrigeration chamber during defrosting can be avoided. Therefore, the structure of the air duct assembly 100 simultaneously meets the design requirements of setting the damper 30 and low cost, making the refrigeration equipment with the air duct assembly 100 more competitive in the market.

[0046] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0047] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An air duct assembly, comprising an air duct body, a fan arranged in the air duct body and a plurality of air flow channels, characterized in that: The air duct assembly further includes a damper, which is disposed at an air outlet between the fan and the air flow channel, and has an open state away from the air outlet and a shielding state shielding the air outlet; When the fan is working, the damper is opened to an open state under the action of the airflow generated by the fan, and the fan and the airflow channel are connected; When the fan stops working, the damper is in a shielding state due to its own gravity, and the fan and the air flow channel are isolated by the damper.

2. The air duct assembly according to claim 1, characterized in that: The damper comprises a rotating shaft and a wind shielding plate connected to the rotating shaft. The damper is rotatably connected to the air duct assembly via the rotating shaft, and the wind shielding plate is used to shield the air outlet.

3. The air duct assembly according to claim 2, characterized in that: The air duct body comprises an air duct back plate and an air duct cover plate. The air duct back plate is provided with a fan slot for accommodating a fan and an air flow channel connected to the fan slot. The air duct cover plate is covered on the air duct back plate.

4. The air duct assembly according to claim 3, characterized in that: The air duct back plate is provided with a first shaft groove, the air duct cover plate is provided with a second shaft groove, one end of the rotating shaft is inserted into the first shaft groove, and the other end is inserted into the second shaft groove.

5. The air duct assembly according to claim 4, characterized in that: The air duct body includes a non-circulation cavity, the non-circulation cavity includes an opening facing the air flow channel, the rotating shaft is arranged in the non-circulation cavity, and the swing range of the damper is limited within the range of the opening.

6. The air duct assembly according to claim 2, characterized in that: The wind shield plate is provided with a line contact protrusion on a side facing the fan, and when the damper is in a shielding state, the line contact protrusion is in contact with the peripheral line of the air outlet.

7. The air duct assembly according to claim 6, characterized in that: When the damper is in the shielding state, the lowest point of the line contact protrusion is higher than the lowest point of the wind shielding plate.

8. The air duct assembly according to claim 2, characterized in that: The wind shield is provided with a plurality of antifreeze protrusions on a side away from the fan. When the damper is in an open state, the wind shield abuts against the air duct body through the antifreeze protrusions.

9. The air duct assembly according to claim 1, characterized in that: A plurality of dampers are provided, and the air flow channels corresponding to each damper face in different directions.

10. A refrigeration device, characterized in that: It comprises the air duct assembly as claimed in any one of claims 1 to 9.

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