WO2019056415A1

WO2019056415A1 - Refrigerator

Info

Publication number: WO2019056415A1
Application number: PCT/CN2017/105172
Authority: WO
Inventors: 魏中; 史慧新
Original assignee: 合肥华凌股份有限公司; 合肥美的电冰箱有限公司; 美的集团股份有限公司
Priority date: 2017-09-21
Filing date: 2017-09-30
Publication date: 2019-03-28
Also published as: CN107560270B; CN107560270A

Abstract

A refrigerator. The refrigerator comprises a refrigerator liner (30), an evaporator (40), a fan (50), and an air duct assembly. The air duct assembly is mounted inside the refrigerator liner (30) and comprises a heat conducting plate (10) and a partition plate assembly provided on one side of the heat conducting plate (10). An edge of the heat conducting plate (10) abuts against the refrigerator liner (30) to define an air cooling space with the refrigerator liner (30). The partition plate assembly is used for partitioning the air cooling space into a first air duct (101) and second air ducts (102), and air inlets (13) and air return ports (14) which are used for making the first air duct (101) and the second air ducts (102) in communication are formed on the partition plate assembly. The evaporator (40) and the fan (50) are provided inside the first air duct (101), so that air in the first air duct (101) can enter the second air ducts (102) through the air inlets (13) and then flow back to the lower end, where the evaporator (40) is provided, of the first air duct (101) through the air return ports (14). Using the refrigerator can resolve the problem of low relative humidity in the storage space of an existing refrigerator.

Description

Refrigerator

Technical field

The invention relates to the technical field of refrigeration, and in particular to a refrigerator.

Background technique

Refrigerators have become one of the most common appliances in people's daily life because they can keep food fresh. The existing air-cooled refrigerator usually cools the air inside the refrigerator through an evaporator and then feeds it into the storage space to cool the air in the storage space. However, when the air inside the refrigerator passes through the evaporator, the humidity of the air is lowered due to frosting, so the relative humidity in the storage space of the air-cooled refrigerator is generally low, which is not conducive to food preservation in the storage space.

Summary of the invention

The main object of the present invention is to provide a refrigerator which aims to solve the problem of low relative humidity in the existing storage space of the refrigerator.

In order to achieve the above object, the refrigerator provided by the present invention comprises a tank, an evaporator, a fan and a duct assembly, wherein the duct assembly is installed in the tank, and the duct assembly comprises a heat conducting plate and a heat conducting plate. a side baffle assembly, the edge of the heat conducting plate abuts the tank to form an air-cooled space with the tank, and the partition assembly is configured to divide the air-cooled space into a first air duct And the second air duct, wherein the partition plate assembly is provided with an air inlet and a return air inlet extending through the first air passage and the second air passage, and the evaporator and the fan are disposed in the first air passage So that the air in the first air passage enters the second air passage through the air inlet, and flows back to the lower end of the first air duct provided with the evaporator through the air return port.

Preferably, the partition assembly includes two first partitions, and the two first partitions are spaced apart to form the first air passage, and the first partition is opposite to the first air passage. One side space is the second air passage; the air inlet and the return air opening are disposed on the first partition, and the evaporator and the fan are located at a lower end of the first air passage.

Preferably, the baffle assembly further includes a plurality of second baffles connected to a side of the first baffle facing away from the first air duct.

Preferably, the number of the return air openings is two, two of the air return openings are located below the evaporator, and the air inlets are located above the evaporator.

Preferably, the second partition plate includes a connecting end connecting the first partition plate and an extending end away from the first partition plate, and the extending end forms a space for air circulation between the edge of the heat conducting plate The gap.

Preferably, the size of the plurality of said indentations decreases as the distance from the evaporator increases.

Preferably, the second partition comprises a fixed end connecting the heat conducting plate and an abutting end abutting the tank, and the length of the fixed end is greater than the length of the abutting end.

Preferably, the size of the air inlet increases as the distance from the evaporator increases.

Preferably, a side of the heat conducting plate forming the first air passage is provided with a heat insulating layer, and a width of the heat insulating layer is consistent with a width of the first air duct, and an extension length of the heat insulating layer is The separator assembly has the same extension length.

Preferably, a side of the heat conducting plate facing away from the partition plate assembly is provided with a shelf, a flow chamber for circulating air is formed in the shelf, and the flow passage passes through the air cooling space.

In the technical solution provided by the present invention, the air-cooling space is partitioned into a first air passage and a second air passage by a partition plate assembly, and the air in the first air passage is cooled by the evaporator, and is circulated to one side by the action of the fan. The air inlet on the plate assembly enters the second air passage, and is returned to the lower portion of the first air passage through the evaporator through the air return port, and is again cooled by the evaporator. Further, the air in the air-cooled space realizes a refrigeration cycle between the first air passage and the second air passage, and does not need to exchange heat with the storage space through the air circulation, thereby ensuring a humidity environment of the storage space.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without any creative work.

1 is a schematic structural view of an embodiment of a refrigerator according to the present invention;

2 is a schematic structural view of an air duct assembly of the refrigerator of FIG. 1 with an evaporator and a fan installed therein;

Figure 3 is a cross-sectional view of the air duct assembly of Figure 2;

4 is a cross-sectional view showing the shelf of the refrigerator of FIG. 1 mounted on a heat conducting plate.

Description of the reference numerals:

标号Label	名称 name	标号 Label	名称 Name
10 10	导热板Thermal plate	20 20	搁架 Shelf
30 30	箱胆 Box gall	40 40	蒸发器 Evaporator
5050	风机 Fan	11 11	第一隔板 First partition
12 12	第二隔板 Second partition	13 13	进风口 Inlet
14 14	回风口 Return air outlet	15 15	缺口 Gap
16 16	送风孔 Air supply hole	1717	出风孔 Vent hole
1818	档条 Bar	19 19	保温层 Insulation
21twenty one	流通腔 Flow chamber	101101	第一风道 First air duct
102 102	第二风道 Second air duct

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present invention are only used to explain between components in a certain posture (as shown in the drawing). Relative positional relationship, motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "connected", "fixed" and the like should be understood broadly, unless otherwise clearly defined and limited. For example, "fixed" may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In addition, the technical solutions between the various embodiments of the present invention may be combined with each other, but must be based on the realization of those skilled in the art, and the combination of technical solutions should be considered when the combination of technical solutions is contradictory or impossible to implement. It does not exist and is not within the scope of protection required by the present invention.

The invention proposes a refrigerator.

Referring to FIG. 1 to FIG. 3, in an embodiment of the present invention, the refrigerator includes a tank 30, an evaporator 40, a fan 50, and a duct assembly (not shown). The duct assembly is installed in the tank 30, and the air duct is installed. The assembly includes a heat conducting plate 10 and a baffle assembly (not shown) disposed on a side of the heat conducting plate 10. The edge of the heat conducting plate 10 abuts against the tank 30 to form an air-cooled space with the tank 30, and the partition assembly is used for The air-cooling space is partitioned into a first air passage 101 and a second air passage 102, and the air gap 13 and the air return opening 14, which pass through the first air passage 101 and the second air passage 102, and the evaporator 40 and the fan are disposed on the partition plate assembly. The air is disposed in the first air passage 101 so that the air in the first air passage 101 enters the second air passage 102 through the air inlet 13 and is returned to the lower end of the first air passage 101 where the evaporator 40 is disposed via the air return port 14. .

It can be understood that the tank 30 of the refrigerator is recessed to form a refrigerating space for storing, such as a storage space, and the heat conducting plate 10 is disposed on the back side of the tank 30, that is, the box door facing the refrigerator. The edge of the heat conducting plate 10 is provided with a frame extending toward the box 30, and the frame abuts against the box 30, so that the heat conducting board 10 is surrounded by the frame and the box 30 to form a closed air-cooling space, and the air-cooling space passes through the heat-conducting board. 10 is independent of the storage space, the evaporator 40 works to lower the temperature in the air-cooled space, and transmits the low temperature to the storage space through the heat conducting plate 10, thereby preventing the air-cooling space and the storage space from being exchanged for heat through the air, that is, Even if the air is frosted by the evaporator 40, the humidity in the storage space is not affected, and the humidity environment in the storage space is ensured. Further, the air-cooling space is partitioned into a first air passage 101 and a second air passage 102 by a partition plate assembly, and the evaporator 40 and the fan 50 are disposed in the first air passage 101, and the air in the first air passage 101 passes through the evaporator. 40 is cooled and circulated to one side by the action of the fan 50, enters the second air passage 102 through the air inlet 13 on the partition assembly, and is returned to the first air passage 101 via the air return port 14 to be provided with the evaporator 40. Below it, it is cooled again by the evaporator 40. Further, the air in the air-cooled space realizes a refrigeration cycle between the first air passage 101 and the second air passage 102, and does not need to exchange heat with the storage space through air circulation, thereby ensuring a humidity environment of the storage space.

Referring to FIG. 2 in detail, the partition assembly includes two first partitions 11 spaced apart to form a first air passage 101, and one of the first partitions 11 facing away from the first air passage 101 The side space is the second air passage 102; the air inlet 13 and the air return port 14 are provided in the first partition plate 11, and the evaporator 40 and the fan 50 are located at the lower end of the first air passage 101. In this embodiment, the first partition 11 is parallel to the longitudinal edge of the heat conducting plate 10, that is, the first partition 11 is vertically disposed, the evaporator 40 and the fan 50 are located at the lower end of the first air passage 101, and the fan 50 is immediately adjacent to the evaporation. The upper end of the device 40 also causes the flow of air in the first air passage 101 to flow from the bottom to the top and through the air inlet 13 on the first partition 11 to the second air passage 102. Moreover, the number of the first partitions 11 is two, and the two first partitions 11 also separate two second air passages 102, and the two second air passages 102 are respectively located at the left and right of the first air passage 101. side. It should be noted that the width of the first air channel 101 is smaller than the width of the second air channel 102, so that the cold air in the first air channel 101 can flow into the second air channel 102 more quickly, and the heat conduction plate 10 is realized. Overall cooling.

Further, the baffle assembly further includes a plurality of second baffles 12 connected to one side of the first baffle 11 facing away from the first air channel 101, and adjacent to the second two baffles 12 Settings. In a preferred embodiment of the present application, the second partition 12 is perpendicular to the first partition 11, that is, the second partition 12 is horizontally disposed. The plurality of second partitions 12 are disposed such that the second air passage 102 is partitioned into a plurality of flow passages. The first partition plate 11 is provided with a plurality of air inlets 13 , for example, one air inlet 13 is connected to one circulation passage and the first air passage 101 , or a plurality of air inlets 13 may be connected to one circulation passage and the first air passage 101 to It is ensured that the cold air in the first air passage 101 can flow more into the second air passage 102, thereby lowering the temperature of the heat conducting plate 10 and ensuring temperature uniformity in the storage space.

Further, the heat conducting plate 10 may be a flat plate structure, and the flat plate type heat conducting plate 10 is disposed on the back side of the refrigerator, that is, the side opposite to the refrigerator door; or the heat conducting plate 10 may cover the back surface and the top surface of the refrigerator to A reduction in the storage space is achieved on a larger scale.

With continued reference to FIG. 2, the number of return air ports 14 is two, two air return ports 14 are located below the evaporator 40, and the air inlet ports 13 are located above the evaporator 40. In this embodiment, the second partition 12 disposed at the lowermost portion is located above the evaporator 40, and the blower 50 is disposed adjacent to the evaporator 40 and located above the evaporator 40, so that after the air in the first air passage 101 is cooled by the evaporator 40, The fan 50 flows upward and flows from the air inlet 13 located above the evaporator 40 to the second air duct 102. The second partition 12 disposed at the lowermost portion of the second air passage 102 forms a return passage with the frame of the heat conducting plate 10, and the return passage communicates with the first passage through the return air opening 14 provided on the first partition plate 11, and the air return port 14 faces the side wall of the evaporator 40 or is located below the evaporator 40, so that the air flowing through the air return port 14 to the first air passage 101 is again cooled by the evaporator 40, and then blown by the fan 50 toward the first air passage 101. And in the second air passage 102 to achieve a refrigeration cycle of the air.

In this embodiment, the second partition 12 includes a connecting end connecting the first partition 11 and an extending end away from the first partition 11. The extending end forms a gap 15 with air flowing between the edge of the heat conducting plate 10. That is, the second partition plate 12 does not abut against the frame of the heat conducting plate 10, so that the air in the second air passage 102 can flow downward through the notch 15. Specifically, the air in the first air passage 101 flows upward through the action of the fan 50 disposed at the lower end, and flows from the air inlet 13 on the first partition 11 to the second air passage 102, and the second air passage 102 The air flows downward through the notch 15 due to the action of the blower 50. A plurality of second partitions 12 are disposed on one side of each of the first partitions 11, and a plurality of notches 15 are formed, and the plurality of notches 15 form a return air passage. The air flowing through the return air passage of the second air passage 102 passes through the return air hole and flows into the first air passage 101, thereby realizing the refrigeration cycle of the air in the first air passage 101 and the second air passage 102, thereby conducting heat conduction. The board 10 achieves cooling.

In a preferred embodiment of the invention, the size of the plurality of air inlets 13 increases as the distance from the evaporator 40 increases. It can be understood that the temperature of the air of the evaporator 40 facing the fan 50 is the lowest, the heat exchange is continuously performed during the circulation of the air, and the temperature of the air in the first air passage 101 increases with the distance from the evaporator 40. Increase. The closer the first partition 11 is to the evaporator 40, the lower the air temperature here, and the smaller the size of the air inlet 13 is, so that the amount of air entering the second air passage 102 through the air inlet 13 is small, and The heat exchange efficiency of the heat conducting plate 10 is also slow; the farther the first baffle 11 is from the evaporator 40, the temperature of the air flowing therethrough is higher than the temperature of the air at the fan 50, so the first baffle 11 is here. The size of the tuyere 13 is increased so that the amount of air flowing into the second duct 102 through the air inlet 13 therethrough is large, and the heat exchange efficiency with the heat conducting plate 10 is faster. The overall heat exchange efficiency and temperature uniformity of the heat conducting plate 10 are better ensured by changing the size of the air inlet 13.

It should be noted that, in other embodiments of the present invention, the size of the air inlet 13 is uniform; or, the size of the air inlet 13 decreases as the distance from the evaporator increases. It can be understood that the air inlet 13 is arranged to realize the circulation of air in the first air passage 101 and the second air passage 102, and the above function can be realized as long as the air inlet 13 is provided.

Preferably, the size of the plurality of indentations 15 decreases as the distance from the evaporator 40 increases. It can be understood that, due to the action of the fan 50, the flow direction of the air in the notch 15 is from top to bottom to flow to the evaporator 40 disposed at the lower end. Therefore, the more the notch 15 through which the air flows, the higher the air temperature. The air temperature in the plurality of notches 15 increases as the distance from the evaporator 40 decreases. By arranging the size of the notch 15, the closer the distance from the evaporator 40 is, the larger the amount of air flowing through the notch 15 is, so that the circulation speed of the air having a higher temperature is faster, and the heat of the air is prevented from affecting the temperature of the heat conducting plate 10, Make sure that the heat conducting plate 10 is cold.

In this embodiment, the second partition 12 includes a fixed end that connects the heat conducting plate 10 and an abutting end that abuts the tank 30. The length of the fixed end is greater than the length of the abutting end. In this embodiment, the connecting end of the second baffle 12 is connected to the first baffle 11 , and the extending end and the frame of the heat conducting plate 10 form a notch 15 , and the length of the fixed end is greater than the length of the abutting end, so that the second baffle 12 is The trapezoidal structure, the oblique side of the trapezoidal second partition 12 is the extended end, which enlarges the size of the notch 15 and is more conducive to the circulation of air at the notch 15.

Referring to FIG. 3, a side of the heat conducting plate 10 on which the first air passage 101 is formed is provided with a heat insulating layer 19, and the width of the heat insulating layer 19 is consistent with the width of the first air passage 101, and the extending length of the heat insulating layer 19 and the partition assembly The extension length is the same. The evaporator 40 is disposed in the first air passage 101 such that the temperature of the air in the first air passage 101 is low, and condensation is easily generated on the surface of the heat conducting plate 10. The thermal insulation layer 19 can maintain the surface of the heat conducting plate 10 forming the first air passage 101, prevent direct contact with the cold air, and avoid the occurrence of condensation.

Referring to FIG. 1 and FIG. 4, a shelf 20 is disposed on a side of the heat conducting plate 10 facing away from the partition plate assembly, and a flow passage 21 through which air flows is formed in the shelf 20, and the flow passage 21 penetrates the air cooling space. The shelf 20 is disposed such that cold air in the air-cooled space can flow into the flow-through chamber 21, thereby achieving temperature reduction of the shelf 20, so as to achieve low-temperature refrigeration of the food placed on the shelf 20, ensuring storage space. The low temperature environment inside ensures the food preservation effect of the storage space.

Referring to FIG. 4 , the heat conducting plate 10 includes a blowing hole 16 and an air outlet hole 17 . The air blowing hole 16 penetrates the first air channel 101 and the circulation cavity 21 , and the air outlet hole 17 penetrates the second air channel 102 and the circulation cavity 21 . It can be understood that the air temperature in the first air passage 101 is lower than the air temperature in the second air passage 102, and the air having a lower temperature flows through the air blowing hole 16 into the circulation chamber 21 of the shelf 20 to the shelf. 20 heat exchange is performed to reduce the temperature of the shelf 20, ensure a low temperature environment in the storage space, and better preserve the food. Further, the air after the heat exchange can flow into the second air passage 102 through the air outlet hole 17 and flow into the return air passage formed by the notch 15.

Preferably, the number of the air outlet holes 17 is two, and the air supply holes 16 are disposed between the two air outlet holes 17; a baffle 18 is disposed between each of the air outlet holes 17 and the ventilation holes, and the baffle 18 The heat conducting plate 10 extends into the flow chamber 21. The arrangement of the baffle 18 also better defines the flow path of the air in the flow passage 21, and ensures that the air flowing into the flow passage 21 at the blow hole 16 flows through the air outlet hole 17 to the second air passage 102. The air in the circulation chamber 21 is prevented from flowing back. In this embodiment, the width of the air inlet hole is the same as the width of the first air channel 101, and the shelf 20 and the second partition plate 12 are on the same plane, and the air outlet hole 17 faces the notch 15.

In a preferred embodiment of the present application, the shelf 20 is a metal piece or is made of a material having a relatively high thermal conductivity. Alternatively, the upper and lower sides of the shelf 20 may be made of materials of different heat conduction systems. For example, the thermal conductivity of the upper layer of the shelf 20 is higher than the thermal conductivity of the lower layer of the shelf 20, so that the heat exchange of the upper layer of the shelf 20 in contact with the food is made. More efficient, better to achieve cold storage of food.

Further, the heat conducting plate 10 is made of metal or made of a material having a high thermal conductivity.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural transformations made by the present specification and the drawings are directly or indirectly utilized in the concept of the present invention. Other related technical fields are included in the scope of patent protection of the present invention.

Claims

A refrigerator, comprising: a tank, an evaporator, a fan and a duct assembly, wherein the duct assembly is installed in the tank, the duct assembly comprises a heat conducting plate and a side of the heat conducting plate a baffle assembly, the edge of the heat conducting plate abuts the tank to form an air-cooled space with the tank, and the partition assembly is configured to divide the air-cooled space into a first air duct and a a second air duct, wherein the baffle assembly is provided with an air inlet and a return air inlet extending through the first air passage and the second air passage, and the evaporator and the fan are disposed in the first air passage so that The air in the first air passage enters the second air passage through the air inlet, and flows back to the lower end of the first air duct provided with the evaporator through the air inlet.
The refrigerator according to claim 1, wherein said partition assembly comprises two first partitions, and said first partitions are spaced apart to form said first air passage, said first partition One side space of the board facing away from the first air duct is the second air duct; the air inlet and the air return port are disposed on the first partition, and the evaporator and the fan are located at The lower end of the first air duct is described.
The refrigerator according to claim 2, wherein said partition assembly further comprises a plurality of second partitions, said second partition being connected to said first partition opposite said first air passage One side.
The refrigerator according to claim 3, wherein the number of the return air ports is two, two of the air return ports are located below the evaporator, and the air inlets are located above the evaporator.
The refrigerator according to claim 4, wherein the second partition comprises a fixed end connecting the heat conducting plate and an abutting end abutting the tank, the fixed end having a length greater than the abutting The length of the end.
The refrigerator according to claim 3, wherein the second partition comprises a connecting end connecting the first partition and an extending end away from the first partition, the extending end and the heat conduction A gap is formed between the edges of the plate to allow air to circulate.
A refrigerator according to claim 6, wherein a size of said plurality of said notches decreases as a distance from said evaporator increases.
The refrigerator according to any one of claims 4 to 7, wherein the size of the air inlet increases as the distance from the evaporator increases.
The refrigerator according to any one of claims 4 to 7, wherein a side of the heat conducting plate forming the first air passage is provided with a heat insulating layer, and a width of the heat insulating layer is different from the first The width of a duct is uniform, and the length of the insulating layer is the same as the length of the partition assembly.
The refrigerator according to any one of claims 4 to 7, wherein a side of the heat conducting plate facing away from the partition plate assembly is provided with a shelf, and the inside of the shelf is formed to be circulated by air. a flow chamber is passed through, and the flow chamber passes through the air-cooling space.
The refrigerator according to claim 3, wherein the second partition comprises a fixed end connecting the heat conducting plate and an abutting end abutting the tank, the length of the fixed end being greater than the abutting The length of the end.
The refrigerator according to claim 3, wherein the size of the air inlet increases as the distance from the evaporator increases.
The refrigerator according to claim 3, wherein a side of the heat conducting plate forming the first air passage is provided with a heat insulating layer, and a width of the heat insulating layer is consistent with a width of the first air passage. The length of the insulating layer is the same as the length of the spacer assembly.
The refrigerator according to claim 3, wherein a side of the heat conducting plate facing away from the partition plate assembly is provided with a shelf, and a space for circulating air is formed in the shelf, and The circulation chamber penetrates the air-cooled space.
The refrigerator according to claim 2, wherein the size of the air inlet increases as the distance from the evaporator increases.
The refrigerator according to claim 2, wherein a side of the heat conducting plate forming the first air passage is provided with a heat insulating layer, and a width of the heat insulating layer is consistent with a width of the first air passage. The length of the insulating layer is the same as the length of the spacer assembly.
The refrigerator according to claim 2, wherein a side of the heat conducting plate facing away from the partition plate assembly is provided with a shelf, and a space for circulating air is formed in the shelf, and The circulation chamber penetrates the air-cooled space.
The refrigerator according to claim 1, wherein the size of the air inlet increases as the distance from the evaporator increases.
The refrigerator according to claim 1, wherein a side of the heat conducting plate forming the first air passage is provided with a heat insulating layer, and a width of the heat insulating layer is consistent with a width of the first air passage. The length of the insulating layer is the same as the length of the spacer assembly.
The refrigerator according to claim 1, wherein a side of the heat conducting plate facing away from the partition plate assembly is provided with a shelf, and a space for circulating air is formed in the shelf, and The circulation chamber penetrates the air-cooled space.