Air duct components and refrigerator

Abstract

The present invention discloses an air duct assembly and a refrigerator, comprising an air duct bottom plate and an EPS insulation board, an upper cover plate is installed on the EPS insulation board, a plurality of second air outlet holes are provided on the air duct bottom plate, an EPS air duct is installed between the air duct bottom plate and the EPS insulation board, and an air supply slot is formed between the EPS air duct and the EPS insulation board, a first air outlet hole adapted to the second air outlet hole is provided on the EPS air duct, a heat-conducting metal plate is installed at the bottom of the air duct bottom plate, and an air outlet is provided on the heat-conducting metal plate. The present invention mainly ensures the temperature distribution of the compartment by transmitting cold air through the heat-conducting metal plate and by adding a small number of air outlets to assist refrigeration, thereby ensuring temperature uniformity, improving the fresh-keeping performance of the refrigerator, and effectively avoiding the problem of food frostbite or excessive temperature deterioration and decay during food storage caused by the air outlet being blocked.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration components, and in particular to an air duct component and a refrigerator. Background Art

[0002] With the continuous development of science and technology and the continuous improvement of people's living standards, more and more families have purchased refrigerators to preserve the food that needs to be stored. Due to the advantages of good preservation effect, fast cooling and environmental protection, the market share of air-cooled refrigerators is also increasing. However, the price of air-cooled refrigerators on the market is not low, which also limits the choice of users to a certain extent. At the same time, air-cooled refrigerators have very high requirements for the sealing of the air duct. If there is a problem with the sealing of the air duct, it will cause the loss of cold air, and the lost air volume will spread from the surrounding of the air duct, causing the temperature in the storage room of the air-cooled refrigerator to lose control. If the sealing of the air duct is poor, the user frequently opens and closes the air-cooled refrigerator door during the use of the air-cooled refrigerator, so that the indoor air enters the storage room of the air-cooled refrigerator, and the water vapor in the air will condense and freeze at the air inlet pipe of the air duct. After long-term accumulation, the air inlet pipe will be blocked.

[0003] Existing air-cooled refrigerators mainly ensure the temperature uniformity of the refrigerator compartment by setting multiple air outlets on the air duct to circulate cold air in the refrigerator compartment. However, after the user places food, the air outlet is easily blocked, resulting in the phenomenon that the temperature of the food at the air outlet is too low and freezes, and the problem that the food rots and deteriorates due to the lack of cold air circulation and the temperature of the local area is too high. Therefore, how to provide an air duct assembly and a refrigerator is a problem that technicians in this field need to solve urgently. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one purpose of the present invention is to provide an air duct assembly and a refrigerator, which mainly ensures the temperature distribution of the compartment by transferring cold air through a heat-conducting metal plate and by adding a small number of air outlets to assist in refrigeration, thereby ensuring temperature uniformity, improving the fresh-keeping performance of the refrigerator, and effectively avoiding the problem of food being frozen or spoiled due to excessive temperature during food storage caused by the air outlet being blocked.

[0005] According to an embodiment of the present invention, an air duct component includes an air duct base plate and an EPS thermal insulation board, wherein an upper cover plate is installed on the EPS thermal insulation board, a plurality of second air outlet holes are provided on the air duct base plate, an EPS air duct is installed between the air duct base plate and the EPS thermal insulation board, and an air supply groove is formed between the EPS air duct and the EPS thermal insulation board, the EPS air duct is provided with first air outlet holes matched with the second air outlet holes, a heat-conducting metal plate is installed at the bottom of the air duct base plate, and an air outlet is provided on the heat-conducting metal plate.

[0006] Preferably, an annular wind shield is installed at the bottom of the air duct base plate, and a plurality of screw columns for installing screws are provided at the bottom of the air duct base plate inside the annular wind shield, and the heat-conducting metal plate is installed under the screw columns by screws, and the heat-conducting metal plate is clamped and installed in the annular wind shield.

[0007] Preferably, a groove body is provided on the top of the air duct bottom plate, and the EPS air duct is assembled and installed in the groove body.

[0008] Preferably, a main air inlet is opened at one end of the air supply slot, and the main air inlet is connected to the air supply slot.

[0009] Preferably, a fixing block for snap-fitting and assembling connection with the main air inlet is provided at the bottom of the EPS insulation board near the main air inlet, and a raised structure is provided in a ring shape at the bottom of the EPS insulation board.

[0010] Preferably, a groove matched with the raised structure is provided on the top of the EPS air duct, and the EPS insulation board is mounted on the EPS air duct by snap-fitting the raised structure.

[0011] Preferably, a button module including a plurality of temperatures or temperature intervals is installed on the upper cover plate, and the button module is electrically connected to the control panel below.

[0012] Preferably, it includes a box casing, a refrigeration duct assembly is installed on the inner side of the box casing, a main air supply outlet compatible with the main air inlet is provided on the refrigeration duct assembly, the air duct assembly is horizontally mounted on the bottom side of the refrigeration duct assembly, a storage drawer is arranged below the air duct assembly, and the storage drawer is pull-out mounted in the box casing.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The refrigeration cycle between the box, the refrigeration duct assembly, the duct assembly and the storage drawer is used to realize the technical problem to be solved by the present invention. The main air supply port on the refrigeration duct assembly supplies the air in the box through the main air inlet to the EPS duct of the duct assembly. After passing through the air supply slot of the EPS duct, the cold air reaches the duct bottom plate from the first air outlet, and enters the heat-conducting metal plate below from the second air outlet at the bottom of the duct bottom plate. Then part of the cold air is directly sent to the storage room or storage drawer through the air outlet of the heat-conducting metal plate, and the rest is transferred to the storage room or storage drawer after the cold storage of the heat-conducting metal plate. The present invention ensures the temperature distribution of the compartment by transferring cold air through the heat-conducting metal plate and by adding a small number of air outlets to assist in refrigeration, thereby ensuring temperature uniformity, improving the fresh-keeping performance of the refrigerator, and effectively avoiding the problem of food frostbite or excessive temperature deterioration and decay during food storage caused by the air outlet being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of the air duct assembly and the refrigerator proposed by the present invention;

[0017] Figure 2 For the present invention Figure 1 Schematic diagram of the external structure of the air duct assembly proposed in;

[0018] Figure 3 For the present invention Figure 1 Schematic diagram of the exploded structure of the air duct assembly proposed in;

[0019] Figure 4 For the present invention Figure 1 A side cross-sectional view of the proposed air duct assembly.

[0020] In the figure: 1-box, 2-refrigeration air duct assembly, 3-air duct assembly, 31-upper cover, 311-button module, 312-control panel, 32-EPS insulation board, 321-fixing block, 322-raised structure, 33-EPS air duct, 332-groove, 333-air supply slot, 334-first air outlet, 34-air duct bottom plate, 341-annular wind shield, 342-screw column, 343-second air outlet, 35-heat-conducting metal plate, 351-air outlet, 36-main air inlet, 4-storage drawer, 5-main air supply outlet. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] refer to Figure 1-4 A duct assembly 3 includes a duct base plate 34 and an EPS insulation board 32, an upper cover plate 31 is installed on the EPS insulation board 32, a plurality of second air outlet holes 343 are opened on the duct base plate 34, an EPS duct 33 is installed between the duct base plate 34 and the EPS insulation board 32, and an air supply groove 333 is formed between the EPS duct 33 and the EPS insulation board 32, the EPS duct 33 is opened with first air outlet holes 334 matched with the second air outlet holes 343, a heat-conducting metal plate 35 is installed at the bottom of the duct base plate 34, and an air outlet 351 is opened on the heat-conducting metal plate 35.

[0025] The duct bottom plate 34 is assembled and positioned with the main air supply port 5 through the EPS insulation board 32 and the EPS duct 33. An annular wind shield 341 is installed at the bottom of the duct bottom plate 34. The annular wind shield 341 can be set to an inward bending shape. After bending, a plurality of narrow grooves are opened on the flange. The heat-conducting metal plate 35 is provided with a small flange. The small flange of the heat-conducting metal plate 35 is inserted into the narrow groove and then bent 90° to fix the heat-conducting metal plate 35 on the annular wind shield 341 at the lower part of the duct bottom plate 34. A plurality of screw columns 342 for installing screws are provided at the bottom of the duct bottom plate 34 on the inner side of the annular wind shield 341. The height of the screw column 342 is slightly lower than the height of the annular wind shield 341. The heat-conducting metal plate 35 is installed below the screw column 342 by screws, and the heat-conducting metal plate 35 is clamped and installed in the annular wind shield 341. After the metal heat-conducting plate is installed, the remaining duct bottom plates 34 maintain a certain gap, and the gap height is lower than the height of the duct floor wind shield.

[0026] A groove body having the same outer dimensions as the EPS air duct 33 is formed on the top of the air duct bottom plate 34, and the EPS air duct 33 is assembled and installed in the groove body.

[0027] A main air inlet 36 is formed at one end of the air supply slot 333 , and the main air inlet 36 is communicated with the air supply slot 333 .

[0028] A fixing block 321 for snap-fitting and assembling with the main air inlet 36 is provided at the bottom of the EPS insulation board 32 near the main air inlet 36. A raised structure 322 is provided in a ring shape at the bottom of the EPS insulation board 32. A wire groove is provided on the EPS insulation board 32 for fixing the wiring harness.

[0029] A groove 332 matched with the raised structure 322 is provided on the top of the EPS air duct 33, and the EPS insulation board 32 is mounted on the EPS air duct 33 by snapping the raised structure 322, so as to ensure that the positions of the EPS insulation board 32 and the EPS air duct 33 are fixed.

[0030] A button module 311 including a plurality of temperatures or temperature ranges is mounted on the upper cover plate 31 , and the button module 311 is electrically connected to a control board 312 below.

[0031] It includes a box liner 1, on the inner side of which a refrigerated air duct assembly 32 is installed, on the refrigerated air duct assembly 32 is provided a main air supply port 5 matched with the main air inlet port 36, on the main air supply port 5 is installed an air damper, and at the same time, there is a temperature sensor on the air duct assembly 3, when the temperature sensor detects that the temperature of the storage drawer 4 reaches the temperature set by the button module 311, the temperature sensor transmits a signal to the control board 312, and the control board 312 controls the air damper to close, when the temperature sensor detects that the temperature of the storage drawer 4 rises to the set temperature threshold, the temperature sensor transmits a signal to the control board 312, and the control board 312 controls the air damper to open, the air duct assembly 3 is horizontally assembled on the bottom side of the refrigerated air duct assembly 32, and a storage drawer 4 is arranged below the air duct assembly 3, and the storage drawer 4 is assembled in the box liner 1 in a pull-out manner.

[0032] Working principle: The present invention relates to a refrigeration cycle between the box 1, the refrigerated air duct assembly 32, the air duct assembly 3 and the storage drawer 4. When the temperature sensor detects that the temperature of the storage drawer 4 rises to a set temperature threshold, the damper opens, and the main air supply port 5 on the refrigerated air duct assembly 32 supplies the air in the box 1 to the EPS air duct 33 of the air duct assembly 3 through the main air inlet 36. After passing through the air supply slot 333 of the EPS air duct 33, the cold air reaches the air duct bottom plate 34 from the first air outlet 334, and enters the heat-conducting metal plate 35 below from the second air outlet 343 at the bottom of the air duct bottom plate 34. Then, a part of the cold air is directly delivered to the storage room or the storage drawer 4 through the air outlet 351 of the heat-conducting metal plate 35, and the rest is transferred to the storage room or the storage drawer 4 after being cooled by the heat-conducting metal plate 35. When the temperature sensor detects that the temperature of the storage drawer 4 reaches the temperature set by the button module 311, the damper closes and the cycle ends.

[0033] The present invention mainly ensures the temperature distribution of the compartment by transferring cold air through the heat-conducting metal plate 35 and by adding a small number of air outlets 351 to assist in refrigeration, thereby ensuring temperature uniformity, improving the refrigerator's freshness-keeping performance, and effectively avoiding the problem of food being frozen or spoiled due to excessive temperature during food storage caused by the air outlets 351 being blocked.

[0034] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air duct assembly, It is characterized in that It includes an air duct base plate and an EPS insulation board, wherein an upper cover plate is installed on the EPS insulation board, a plurality of second air outlet holes are opened on the air duct base plate, an EPS air duct is installed between the air duct base plate and the EPS insulation board, and an air supply groove is formed between the EPS air duct and the EPS insulation board, the EPS air duct is opened with first air outlet holes matched with the second air outlet holes, a heat-conducting metal plate is installed at the bottom of the air duct base plate, and an air outlet is opened on the heat-conducting metal plate; there is a certain gap between the heat-conducting metal plate and the air duct base plate.

2. The air duct assembly according to claim 1, It is characterized in that An annular wind shield is installed at the bottom of the air duct base plate, and a plurality of screw columns for installing screws are provided at the bottom of the air duct base plate inside the annular wind shield. The heat-conducting metal plate is installed under the screw columns by screws, and the heat-conducting metal plate is clamped and installed in the annular wind shield.

3. The air duct assembly according to claim 1, It is characterized in that A slot body is provided on the top of the air duct bottom plate, and the EPS air duct assembly is installed in the slot body.

4. The air duct assembly according to claim 1, It is characterized in that A main air inlet is provided at one end of the air supply slot, and the main air inlet is communicated with the air supply slot.

5. The air duct assembly according to claim 4, It is characterized in that A fixing block for being snap-fitted and assembled with the main air inlet is provided at the bottom of the EPS insulation board near the main air inlet, and a raised structure is provided in an annular shape at the bottom of the EPS insulation board.

6. The air duct assembly according to claim 5, It is characterized in that The top of the EPS air duct is provided with a groove matched with the raised structure, and the EPS insulation board is mounted on the EPS air duct by snapping the raised structure.

7. The air duct assembly according to claim 1, It is characterized in that A key module including a plurality of temperatures or temperature intervals is installed on the upper cover plate, and the key module is electrically connected to the control panel below.

8. A refrigerator comprising the air duct assembly according to any one of claims 1 to 7, It is characterized in that It includes a box casing, a refrigeration duct assembly is installed on the inner side of the box casing, a main air supply port adapted to the main air inlet is provided on the refrigeration duct assembly, the duct assembly is horizontally mounted on the bottom side of the refrigeration duct assembly, a storage drawer is arranged below the duct assembly, and the storage drawer is pull-out mounted in the box casing.

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