WO2021233745A1

WO2021233745A1 - Dryer assembly and refrigeration device

Info

Publication number: WO2021233745A1
Application number: PCT/EP2021/062548
Authority: WO
Inventors: Ming Zhang; Yegui Huang; Qiwu Zhu; Andreas Vogl; Johannes BILZ
Original assignee: BSH Hausgeräte GmbH
Priority date: 2020-05-22
Filing date: 2021-05-11
Publication date: 2021-11-25
Also published as: CN113701408A

Abstract

202000611 18 / 18 ABSTRACT Embodiments of this application provide a dryer assembly and a refrigeration device. The dryer assembly includes: a drying tube, adapted to dry refrigerants; at least two capillary tubes; an adapter tube, including an input segment, a bent segment, and an output segment communicating in sequence, where the input segment communicates 5 with the drying tube hermetically, the output segment communicates with each of the at least two capillary tubes hermetically, and the bent segment is lower than the input segment and the output segment. Compared with the prior art, according to the dryer assembly provided in the embodiments of this application, the refrigerant from the drying tube may be first gathered in the bent segment under a gravity effect of the 10 refrigerant, and then flow, from bottom to top, from the bent segment through the output segment and simultaneously flow in the same phase state to the at least two capillary tubes, to ensure that the refrigerant may be distributed in the at least two capillary tubes in a balanced manner, so as to ensure balanced refrigeration effects of the compartments in the refrigeration device.15 Fig. 3

Description

DRYER ASSEMBLY AND REFRIGERATION DEVICE

BACKGROUND

Technical Field

The present invention relates to the field of household appliance technologies, and in particular, to a dryer assembly and a refrigeration device.

Related Art

In an existing refrigeration device, a refrigerant is usually filtered by a drying tube, then divided by a plurality of capillary tubes, and finally enters different compartments for refrigeration. However, when the refrigerant enters the plurality of capillary tubes, distribution of the refrigerant in the capillary tubes is often very unbalanced. Some capillary tubes are mainly filled with the liquid-phase refrigerant, and some other capillary tubes are mainly filled with the gas-phase refrigerant. As a result, refrigeration effects of the compartments in the refrigeration device are unbalanced.

SUMMARY

An objective of embodiments of the present invention is to provide an improved dryer assembly and refrigeration device.

The dryer assembly provided in the embodiments of the present invention includes: a drying tube, adapted to dry refrigerants; at least two capillary tubes; an adapter tube, including an input segment, a bent segment, and an output segment communicating in sequence, where the input segment communicates with the drying tube hermetically, the output segment communicates with each of the at least two capillary tubes hermetically, and the bent segment is lower than the input segment and the output segment. The positions of the segments refer to the spatial arrangement of the dryer assembly within a refrigeration device in operating condition.

Optionally, a vacuum tube is further included, where the output segment communicates with the vacuum tube hermetically.

Optionally, the output segment includes an outlet, and both the vacuum tube and the at least two capillary tubes pass through the outlet and extend toward inside of the output segment.

Optionally, the vacuum tube is formed at a portion of the adapter tube including at least the output segment.

Optionally, the at least two capillary tubes pass through a tube wall of the output segment and extend toward inside of the output segment; and lowest points, in the output segment, to which the at least two capillary tubes extend are both higher than a highest bent part of the bent segment.

Optionally, the lowest points, in the output segment, to which the at least two capillary tubes extend are at different heights. Optionally, the tube wall is provided with at least a connecting hole, adapted to enable the at least two capillary tubes to communicate with the output segment hermetically.

Optionally, a quantity of connecting holes is the same as a quantity of the at least two capillary tubes, and each connecting hole of the connecting holes is adapted to enable one of the capillary tubes to communicate with the output segment hermetically.

Optionally, a cross section of the bent segment is set so small that the refrigerant flowing through the bent segment is only in a liquid state, a gaseous state, or a uniform gas-liquid mixed state.

Optionally, an end of the vacuum tube far away from the drying tube is closed. The embodiments of the present invention further provide a refrigeration device, including a refrigeration system, where the foregoing dryer assembly is disposed in the refrigeration system.

Optionally, the refrigeration device includes a first compartment and a second compartment. A refrigeration temperature of the first compartment is higher than a refrigeration temperature of the second compartment. The at least two capillary tubes include a first capillary tube and a second capillary tube. A lowest point, in the output segment, to which the first capillary tube extends is lower than a lowest point, in the output segment, to which the second capillary tube extends. The first capillary tube communicates with a first evaporator configured to cool the first compartment, and the second capillary tube communicates with a second evaporator configured to cool the second compartment.

Compared with the prior art, the technical solutions of the embodiments of the present invention have beneficial effects. For example, a refrigerant from a drying tube may be first gathered in a bent segment under a gravity effect of the refrigerant, and then flow, from bottom to top, from the bent segment through an output segment and simultaneously flow in the same phase state to at least two capillary tubes, to ensure that the refrigerant may be distributed in the at least two capillary tubes in a balanced manner, so as to ensure balanced refrigeration effects of compartments in the refrigeration device.

In another example, heights to which the at least two capillary tubes extend in an adapter tube are set to be the same, so that the dryer assembly may be applicable to a case that refrigeration temperatures of the compartments in the refrigeration device are the same or have little difference.

In another example, the heights to which the at least two capillary tubes extend in the adapter tube are set to be different, so that the dryer assembly may be applicable to a case that refrigeration temperatures of the compartments in the refrigeration device have large difference. In another example, the dryer assembly has a simple structure and relatively low costs, and is universally applicable to the refrigeration device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a refrigeration device according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a refrigeration circuit of a refrigeration system according to an embodiment of the present invention;

FIG. 3 is a first schematic structural diagram of a dryer assembly according to an embodiment of the present invention; FIG. 4 is a schematic exploded view of the dryer assembly shown in FIG. 3;

FIG. 5 is a schematic diagram of a first working state of a dryer assembly according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a second working state of a dryer assembly according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a third working state of a dryer assembly according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a fourth working state of a dryer assembly according to an embodiment of the present invention; FIG. 9 is a schematic diagram of a fifth working state of a dryer assembly according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a sixth working state of a dryer assembly according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a seventh working state of a dryer assembly according to an embodiment of the present invention;

FIG. 12 is a second schematic structural diagram of a dryer assembly according to an embodiment of the present invention; and

FIG. 13 is a third schematic structural diagram of a dryer assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

In an existing refrigeration device, when a refrigerant is filtered by a drying tube and then enters a plurality of capillary tubes, distribution of the refrigerant in the capillary tubes is often very unbalanced. Some capillary tubes are mainly filled with the liquid-phase refrigerant, and some other capillary tubes are mainly filled with the gas-phase refrigerant. As a result, refrigeration effects of the compartments in the refrigeration device are unbalanced.

Different from the prior art, in technical solutions provided in the embodiments of the present invention, a dryer assembly includes: a drying tube, adapted to dry refrigerants; at least two capillary tubes; an adapter tube, including an input segment, a bent segment, and an output segment communicating in sequence, where the input segment communicates with the drying tube hermetically, the output segment communicates with each of the at least two capillary tubes hermetically, and the bent segment is lower than the input segment and the output segment.

Compared with the prior art, according to the dryer assembly provided in the embodiments of the present invention, the refrigerant from the drying tube may be first gathered in the bent segment under a gravity effect of the refrigerant, and then flow, from bottom to top, from the bent segment through the output segment and simultaneously flow in the same phase state to the at least two capillary tubes, to ensure that the refrigerant may be distributed in the at least two capillary tubes in a balanced manner, so as to ensure balanced refrigeration effects of the compartments in the refrigeration device. To make the objectives, features, and beneficial effects of the embodiments of the present invention more comprehensible, the specific embodiments of the present invention are described in detail with reference to the accompanying drawings.

In the embodiments of the present invention, the refrigeration device may include at least two compartments. For ease of description, descriptions are provided by using two compartments as an example.

FIG. 1 is a schematic structural diagram of a refrigeration device according to an embodiment of the present invention.

As shown in FIG. 1, the refrigeration device 1 includes a first compartment 10 and a second compartment 20. In the embodiments of the present invention, the refrigeration device 1 may further include a refrigeration system.

FIG. 2 is a schematic diagram of a refrigeration circuit of a refrigeration system according to an embodiment of the present invention.

As shown in FIG. 2, the refrigeration system 30 includes a compressor 31, a condenser 32, an evaporator, and a dryer assembly 40.

Specifically, the compressor 31, the condenser 32, the dryer assembly 40, the evaporator, and the compressor 31 are connected in sequence and form a refrigeration circuit adapted to refrigerant circulation. In the refrigeration circuit, the compressor 31 is adapted to compress a low-temperature and low-pressure gas refrigerant from the evaporator into a high-temperature and high-pressure gas refrigerant. The condenser 32 is adapted to condense the high-temperature and high-pressure gas refrigerant from the compressor 31 into a low-temperature and high-pressure liquid refrigerant. The dryer assembly 40 is adapted to remove moisture and impurities from the low-temperature and high-pressure liquid refrigerant from the condenser 32 and perform throttling and pressure reduction to obtain a low-temperature and low-pressure liquid refrigerant. The evaporator is adapted to evaporate the low-temperature and low-pressure liquid refrigerant from the dryer assembly 40 into a low-temperature and low-pressure gas refrigerant. In the process that the low-temperature and low-pressure liquid refrigerant is evaporated into the low-temperature and low-pressure gas refrigerant, heat in the refrigeration device 1 may be continuously absorbed, so as to implement cooling and refrigeration of the refrigeration device 1.

In some specific examples, the evaporator includes a first evaporator 33 adapted to perform cooling and refrigeration on the first compartment 10 and a second evaporator 34 adapted to perform cooling and refrigeration on the second compartment 20. The first evaporator 33 and the second evaporator 34 are connected in parallel with each other and are jointly connected in series between the dryer assembly 40 and the compressor 31. Therefore, the refrigeration circuit may include a first refrigeration circuit adapted to perform cooling and refrigeration on the first compartment 10 and a second refrigeration circuit adapted to perform cooling and refrigeration on the second compartment 20. The first refrigeration circuit is formed by connecting the compressor 31, the condenser 32, the dryer assembly 40, the first evaporator 33, and the compressor 31 in sequence, and the second refrigeration circuit is formed by connecting the compressor 31, the condenser 32, the dryer assembly 40, the second evaporator 34, and the compressor 31 in sequence.

In the process that the low-temperature and low-pressure liquid refrigerant in the first refrigeration circuit is evaporated into the low-temperature and low-pressure gas refrigerant, the heat in the first compartment 10 may be continuously absorbed, so as to implement cooling and refrigeration in the first compartment 10.

In the process that the low-temperature and low-pressure liquid refrigerant in the second refrigeration circuit is evaporated into the low-temperature and low-pressure gas refrigerant, the heat in the second compartment 20 may be continuously absorbed, so as to implement cooling and refrigeration in the second compartment 20.

Referring to FIG. 2, the refrigeration system 30 may further include a valve connected between the dryer assembly 40 and the evaporator. The valve is adapted to adjust a flow rate of the refrigerant flowing through the dryer assembly 40 to the evaporator, and/or adapted to control opening and closing of the refrigeration circuit.

In some specific examples, the valve may include a first valve 35 disposed in the first refrigeration circuit and a second valve 36 disposed in the second refrigeration circuit.

FIG. 3 is a first schematic structural diagram of a dryer assembly according to an embodiment of the present invention, and FIG. 4 is a schematic exploded view of the dryer assembly shown in FIG. 3.

As shown in FIG. 3 and FIG. 4, the dryer assembly 40 provided in the embodiments of the present invention includes a drying tube 41, an adapter tube 45, and at least two capillary tubes connected in sequence. Specifically, the drying tube 41 includes a desiccant 411, adapted to dry the refrigerant from the condenser 32 and remove impurities therein. Each capillary tube of the at least two capillary tubes is connected to one evaporator in the refrigeration system 30. The adapter tube 45 includes an input segment 451, a bent segment 452, and an output segment 453 communicating in sequence. The input segment 451 of the adaptation tube 45 communicates with the drying tube 41 in a sealed manner, the output segment 453 of the adaptation tube 45 communicates with the at least two capillary tubes in a sealed manner, and the bent segment 452) is lower than the input segment 451 and the output segment 453. In an ideal state, the refrigerant flowing through the dryer assembly 40 should be kept in a single liquid state. However, in practical work, because of inadequate condensation, inadequate refrigerant, and the like, the refrigerant flowing through the dryer assembly 40 may appear in a gaseous state.

In some specific examples, a cross section of the bent segment 452 may be set so small that the refrigerant flowing through the bent segment 452 is only in a liquid state, a gaseous state, or a uniform gas-liquid mixed state.

Specifically, the cross section of the bent segment 452 may be set to be less than or equal to 25p square millimeters.

According to the dryer assembly 40 provided in the embodiments of the present invention, the refrigerant from the drying tube 41 may be first gathered in the bent segment 452 under a gravity effect of the refrigerant, and then flow, from bottom to top, from the bent segment 452 through the output segment 453 and simultaneously flow in the same phase state to the at least two capillary tubes, to ensure that the refrigerant may be distributed in the at least two capillary tubes in a balanced manner, so as to ensure balanced refrigeration effects of the compartments in the refrigeration device 1.

In this embodiment of the present invention, the same phase state includes a single liquid state, a single gaseous state or a gas-liquid mixed state. The refrigerant may be distributed in the at least two capillary tubes in a balanced manner to represent that the refrigerant distributed in each of the at least two capillary tubes is in a liquid state, or in a gaseous state, or in a gas-liquid mixed state.

Referring to FIG. 4, the output segment 453 includes an outlet 454. Each of the at least two capillary tubes can pass through the outlet 454 and extend toward inside of the output segment 453.

In some specific examples, the at least two capillary tubes may include a first capillary tube 43 and a second capillary tube 44. The first capillary tube 43 is connected to the first evaporator 33 adapted to perform cooling and refrigeration on the first compartment 10, and the second capillary tube 44 is connected to the second evaporator 34 adapted to perform the cooling and refrigeration on the second compartment 20. Referring to FIG. 3 and FIG. 4, the dryer assembly 40 further includes a vacuum tube 42 adapted to perform vacuumizing on the refrigeration circuit. One end of the vacuum tube 42 communicates with the output segment 453 hermetically, and the other end thereof is adapted to be closed after vacuumizing is performed and before the refrigeration circuit works. In some specific examples, the vacuum tube 42 can pass through the outlet 454 and extend toward inside of the output segment 453.

FIG. 5 to FIG. 11 are schematic diagrams of seven working states of a dryer assembly according to the embodiments of the present invention respectively. The refrigerant in the refrigeration circuit is sequentially decreased in examples shown in FIG. 5 to FIG. 11.

In this embodiment of the present invention, when the refrigerant in the refrigeration circuit is adequate, a liquid refrigerant 50 flowing to the drying tube 41 is also adequate. When the refrigerant in the refrigeration circuit is inadequate, the liquid refrigerant 50 flowing to the drying tube 41 is also inadequate. Referring to FIG. 5, when the liquid refrigerant 50 in the drying tube 41 is adequate, the liquid refrigerant 50 from the drying tube 41 may be first gathered in and fill the bent segment 452 under a gravity effect of the refrigerant, and then flow, from bottom to top, from the bent segment 452 through the output segment 453 and simultaneously flow to the first capillary tube 43, the second capillary tube 44, and the vacuum tube 42 in the form of the liquid refrigerant 50.

Referring to FIG. 6, as the liquid refrigerant 50 in the drying tube 41 decreases relative to the example shown in FIG. 5, the liquid refrigerant 50 from the drying tube 41 may still fill the bent segment 452, and flow, from bottom to top, from the bent segment 452 through the output segment 453 and simultaneously flow to the first capillary tube 43 and the second capillary tube 44 in the form of the liquid refrigerant 50.

Referring to FIG. 7, as the liquid refrigerant 50 in the drying tube 41 decreases relative to the example shown in FIG. 6, the liquid refrigerant 50 from the drying tube 41 cannot fill the bent segment 452, a gas refrigerant 60 from the drying tube 41 starts to enter the bent segment 452 and the output segment 453. However, the refrigerant from the adapter tube 45 can still simultaneously flow to the first capillary tube 43 and the second capillary tube 44 in the form of the liquid refrigerant 50.

It should be noted that when the liquid refrigerant 50 in the drying tube 41 is adequate, the liquid refrigerant 50 from the drying tube 41 descends and gathers in the bent segment 452 because of large gravity of the liquid refrigerant, while the gas refrigerant 60 from the drying tube 41 ascends because of small gravity of the gas refrigerant. However, only when the liquid refrigerant 50 in the drying tube 41 is inadequate, the gas refrigerant 60 is sucked back and enters the bent segment 452 and the output segment 453.

Referring to FIG. 8, as the liquid refrigerant 50 in the drying tube 41 decreases relative to the example shown in FIG. 7, the liquid refrigerant 50 from the drying tube 41 cannot fill the bent segment 452, the gas refrigerant 60 from the drying tube 41 increasingly enters the bent segment 452 and the output segment 453. However, the refrigerant from the adapter tube 45 can still simultaneously flow to the first capillary tube 43 and the second capillary tube 44 in the form of the liquid refrigerant 50.

Referring to FIG. 9, as the liquid refrigerant 50 in the drying tube 41 completely decreases relative to the example shown in FIG. 8, and the drying tube 41 is not continuously replenished with the liquid refrigerant 50, the liquid refrigerant 50 from the drying tube 41 cannot fill the bent segment 452. Not only does the gas refrigerant 60 from the drying tube 41 increasingly enter the bent segment 452 and the output segment 453, but also the gas refrigerant 60 entering the bent segment 452 and the output segment 453 starts to flow to the first capillary tube 43.

It should be noted that, in the example shown in FIG. 9, the second capillary tube 44 is disposed close to a tube wall of the adapter tube 45. When the refrigerant enters the second capillary tube 44 along the tube wall of the adapter tube 45, resistance is also relatively large. The first capillary tube 43 is not disposed close to the tube wall of the adapter tube 45, and the refrigerant can enter the first capillary tube 43 without being along the tube wall of the adapter tube 45.

When a gas-liquid mixed refrigerant enters the capillary tube through the adapter tube 45, the gas refrigerant 60 preferentially enters the first capillary tube 43, and the liquid refrigerant 50 enters the second capillary tube 44.

Referring to FIG. 10, although the drying tube 41 is replenished with the liquid refrigerant 50, the liquid refrigerant 50 in the entire dryer assembly 40 still decreases relative to the example shown in FIG. 9. The liquid refrigerant 50 from the drying tube 41 cannot fill the bent segment 452, and the gas refrigerant 60 from the drying tube 41 increasingly enters the bent segment 452 and the output segment 453 and simultaneously flows to the first capillary tube 43 and the second capillary tube 44 in the form of the gas refrigerant 60.

It should be noted that, in the example shown in FIG. 9, although the gas refrigerant 60 first enters the first capillary tube 43, in the example shown in FIG. 10, as the liquid refrigerant continuously decreases, the gas refrigerant 60 still simultaneously flows to the first capillary tube 43 and the second capillary tube 44 subsequently. Referring to FIG. 11, as the liquid refrigerant 50 in the entire dryer assembly 40 decreases relative to the example shown in FIG. 10, the liquid refrigerant 50 from the drying tube 41 still cannot fill the bent segment 452, and the gas refrigerant 60 from the drying tube 41 increasingly enters the bent segment 452 and the output segment 453 and simultaneously flows to the first capillary tube 43 and the second capillary tube 44 in the form of the gas refrigerant 60.

Meanwhile, because of severe shortage of the liquid refrigerant 50, pressure of the bent segment 452 gradually decreases. When the pressure of the bent segment 452 decreases to be below pressure of a closed end of the vacuum tube 42, the liquid refrigerant 50 in the vacuum tube 42 returns to the output segment 453 of the adapter tube 45 because of the gravity effect of the liquid refrigerant.

When the refrigeration circuit is subsequently replenished with adequate refrigerant and the liquid refrigerant 50 in the drying tube 41 is also adequate, the liquid refrigerant 50 from the drying tube 41 may still be gathered in and fill the bent segment 452 under the gravity effect of the liquid refrigerant, and then flow, from bottom to top, from the bent segment 452 through the output segment 453 and simultaneously flow to the first capillary tube 43, the second capillary tube 44, and the vacuum tube 42 in the form of the liquid refrigerant 50.

In this embodiment of the present invention, when the refrigerant in the refrigeration circuit is adequate and the liquid refrigerant 50 flowing to the drying tube 41 is also adequate, the refrigerant can simultaneously flow to the first capillary tube 43 and the second capillary tube 44 in the form of the liquid refrigerant 50.

When the refrigerant in the refrigeration circuit is gradually inadequate and the liquid refrigerant 50 flowing to the drying tube 41 is also gradually inadequate, the refrigerant first simultaneously flows to the first capillary tube 43 and the second capillary tube 44 in the form of the liquid refrigerant 50, and then simultaneously flows to the first capillary tube 43 and the second capillary tube 44 in the form of the gas refrigerant 60.

When the refrigerant in the refrigeration circuit is severely inadequate and the liquid refrigerant 50 flowing to the drying tube 41 is also severely inadequate, the refrigerant simultaneously flows to the first capillary tube 43 and the second capillary tube 44 in the form of the gas refrigerant 60.

In this way, the refrigerant may simultaneously flow to the first capillary tube 43 and the second capillary tube 44 in the same phase state, thereby ensuring that the refrigerant is distributed in the first capillary tube 43 and the second capillary tube 44 in a balanced manner, and ensuring balanced refrigeration effects of the first compartment 10 and the second compartment 20 in the refrigeration device 1.

FIG. 12 is a second schematic structural diagram of a dryer assembly according to an embodiment of the present invention. Different from the example shown in FIG. 3, in an example shown in FIG. 12, the vacuum tube 42 is formed at a portion of the adapter tube 45 including at least the output segment 453. The first capillary tube 43 and the second capillary tube 44 pass through the tube wall 455 of the output segment 453 and extend toward inside of the output segment 453, and the lowest point Al, in the output segment 453, to which the first capillary tubes 43 extends and the lowest point A2, in the output segment 453, to which the second capillary tube 44 extends are both higher than a highest bent part B of the bent segment 452.

Referring to FIG. 12, two ends of the bent segment 452 are bent from bottom to top relative to the middle of the bent segment, and two bent parts located below and above are formed in the middle of the bent segment. The bent part located below is a lowest bent part B', and the bent part located above is the highest bent part B.

In the example shown in FIG. 12, the lowest point Al, in the output segment 453, to which the first capillary tubes 43 extends and the lowest point A2, in the output segment 453, to which the second capillary tube 44 extends are both higher than the highest bent part B of the bent segment 452, so as to ensure that the liquid refrigerant 50 from the drying tube 41 may first be integrated in and fill the bent segment 452, and then flow, from bottom to top, from the bent segment 452 through the output segment 453 and simultaneously flow to the first capillary tube 43 and the second capillary tube 44 in the form of the liquid refrigerant 50, to prevent the gas refrigerant 60 from entering the first capillary tube 43 and the second capillary tube 44 more preferentially than the liquid refrigerant 50.

Each of the foregoing technical solutions provided in the embodiments of the present invention is applicable to a case that refrigeration temperatures of the compartments in the refrigeration device 1 are the same or have little difference.

However, the refrigeration temperatures of the compartments in the refrigeration device 1 are usually different.

In some specific examples, a refrigeration temperature of the first compartment 10 may be higher than a refrigeration temperature of the second compartment 20. For example, the first compartment 10 may be a refrigerating compartment, and the second compartment 20 may be a freezing compartment.

Because the refrigeration temperature of the first compartment 10 is higher than the refrigeration temperature of the second compartment 20, pressure required to supply the refrigerant in the first refrigeration circuit to the first evaporator 33 is higher than pressure required to supply the refrigerant in the second refrigeration circuit to the second evaporator 34, and resistance of supplying the refrigerant in the first refrigeration circuit to the first evaporator 33 is larger than resistance of supplying the refrigerant in the second refrigeration circuit to the second evaporator 34. In this case, if the lowest points, in the output segment 453, to which the first capillary tube 43 and the second capillary tube 44 extend are at the same height, the liquid refrigerant 50 from the bent segment 452 preferentially enters the second capillary tube 44 with relatively small resistance, resulting in a severe imbalance in distribution of the liquid refrigerant 50 between the first capillary tube 43 and the second capillary tube 44.

Referring to 12, the height of the lowest point Al, in the output segment 453, to which the first capillary tube 43 extends is set to be lower than the height of the lowest point A2, in the output segment 453, to which the second capillary tube 44 extends, so that the liquid refrigerant 50 from the bent segment 452 preferentially enters the first capillary tube 43 with relatively large resistance and then enters the second capillary tube 44 with relatively small resistance, so as to ensure that the liquid refrigerant 50 is distributed in the first capillary tube 43 and the second capillary tube 44 in a balanced manner.

In some specific examples, the tube wall 455 may be provided with at least one connecting hole adapted to enable the first capillary tube 43 and the second capillary tube 44 to pass through the at least one connecting hole to communicate with the output segment 453 hermetically.

In this embodiment of the present invention, a quantity of connecting holes may be the same as a quantity of the at least two capillary tubes, and each connecting hole of the connecting holes is adapted to enable one of the capillary tubes to communicate with the output segment 453 hermetically.

Referring to FIG. 12, the tube wall 455 is provided with a first connecting hole 456 and a second connecting hole 457. The first capillary tube 43 passes through the first connecting hole 456 to communicate with the output segment 453 hermetically, and the second capillary tube 44 passes through the second connecting hole 457 to communicate with the output segment 453 hermetically.

FIG. 13 is a third schematic structural diagram of a dryer assembly according to an embodiment of the present invention. Different from the example shown in FIG. 12, in an example shown in FIG. 13, the tube wall 455 is provided with only one common connecting hole 458, and both the first capillary tube 43 and the second capillary tube 44 pass through the common connecting hole 458 to communicate with the output segment 453 hermetically.

Although specific embodiments are described above, the embodiments are not intended to limit the scope disclosed in the present invention, even if only a single embodiment is described relative to specific features. The feature examples provided in the present invention are intended to be illustrative rather than limiting, unless different expressions are made. In a specific implementation, according to an actual requirement, in a technically feasible case, the technical features of one or more dependent claims may be combined with the technical features of the independent claims, and the technical features from the corresponding independent claims may be combined in any appropriate way instead of using just specific combinations listed in the claims.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and the scope of the present invention, and therefore the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

CLAIMS What is claimed is:

1. A dryer assembly (40), characterized by comprising: a drying tube (41), adapted to dry refrigerants (50, 60); at least two capillary tubes (43, 44); and an adapter tube (45), comprising an input segment (451), a bent segment (452), and an output segment (453) communicating in sequence, wherein the input segment (451) communicates with the drying tube (41) hermetically, the output segment (453) communicates with each of the at least two capillary tubes (43, 44) hermetically, and the bent segment (452) is lower than the input segment (451) and the output segment (453).

2. The dryer assembly (40) according to claim 1, characterized by further comprising a vacuum tube (42), wherein the output segment (453) communicates with the vacuum tube (42) hermetically.

3. The dryer assembly (40) according to claim 2, characterized in that the output segment (453) comprises an outlet (454), both the vacuum tube (42) and the at least two capillary tubes (43, 44) pass through the outlet (454) and extend toward inside of the output segment (453).

4. The dryer assembly (40) according to claim 2, characterized in that the vacuum tube (42) is formed at a portion of the adapter tube (45) comprising at least the output segment (453).

5. The dryer assembly (40) according to claim 4, characterized in that the at least two capillary tubes (43, 44) pass through a tube wall (455) of the output segment (453) and extend toward inside of the output segment (453); and lowest points (Al, A2), in the output segment (453), to which the at least two capillary tubes (43, 44) extend are both higher than a highest bent part (B) of the bent segment (452).

6. The dryer assembly (40) according to claim 3 or 5, characterized in that the lowest points (Al, A2), in the output segment (453), to which the at least two capillary tubes (43, 44) extend are at different heights.

7. The dryer assembly (40) according to claim 5, characterized in that the tube wall (455) is provided with at least one connecting hole, adapted to enable the at least two capillary tubes (43, 44) to communicate with the output segment (453) hermetically.

8. The dryer assembly (40) according to claim 7, characterized in that a quantity of connecting holes is the same as a quantity of the at least two capillary tubes (43, 44), and each connecting hole of the connecting holes is adapted to enable one of the capillary tubes (43, 44) to communicate with the output segment (453) hermetically.

9. The dryer assembly (40) according to any one of claims 1 to 8, characterized in that a cross section of the bent segment (452) is set so small that the refrigerants (50, 60) flowing through the bent segment (452) are only in a liquid state, a gaseous state, or a uniform gas-liquid mixed state.

10. The dryer assembly (40) according to any one of claims 2 to 8, characterized in that an end of the vacuum tube (42) far away from the drying tube (41) is closed.

11. A refrigeration device (1), comprising a refrigeration system (30), characterized in that the dryer assembly (40) according to any one of claims 1 to 10 is disposed in the refrigeration system (30).

12. The refrigeration device (1) according to claim 11, characterized by comprising a first compartment (10) and a second compartment (20), wherein a refrigeration temperature of the first compartment (10) is higher than a refrigeration temperature of the second compartment (20), the at least two capillary tubes (43, 44) comprise a first capillary tube (43) and a second capillary tube (44), and a lowest point (Al), in the output segment (453), to which the first capillary tube (43) extends is lower than a lowest point (A2), in the output segment (453), to which the second capillary tube (44) extends; and the first capillary tube (43) communicates with a first evaporator configured to cool the first compartment (10); and the second capillary tube (44) communicates with a second evaporator configured to cool the second compartment (20).