Air duct assembly and dehumidifier having the same

Abstract

The present invention provides an air duct assembly and a dehumidifier having the same. The air duct assembly includes a top cover, an outer shell, a partition, a refrigeration electrode and a fan. An air inlet is arranged on the top cover; the outer shell includes an outer shell bottom wall and an outer shell side wall, the outer shell bottom wall and the outer shell side wall form a containing portion, and an air outlet is arranged on the outer shell side wall; the top cover cooperates with the outer shell to form an air cavity; the partition divides the air cavity into an air inlet and an air outlet, the partition cooperates with the top cover to form the air inlet, and cooperates with the outer shell to form the air outlet; the inlet of the air inlet is connected to the air inlet, the outlet of the air inlet is connected to the inlet of the air outlet, and the outlet of the air outlet is connected to the air outlet; the fan accelerates the wind speed of the air inlet and / or the air outlet; the refrigeration electrode is arranged in the air outlet along the extension direction of the air outlet, including a cold surface and a hot surface, a first sub-air outlet is formed between the cold surface and the partition, and a second sub-air outlet is formed between the hot surface and the outer shell. The air duct assembly is small in size, and the dehumidifier having the air duct assembly has high dehumidification efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidification, and in particular to an air duct component and a dehumidifier having the same. Background Art

[0002] Dehumidifiers are also called dehumidifiers, dryers, and dehumidifiers. They can generally be divided into two categories: civil dehumidifiers and industrial dehumidifiers. They are part of an air-conditioned home. Usually, a conventional dehumidifier consists of a compressor, a heat exchanger, a fan, a water container, a casing, and a controller. Its working principle is: the fan draws humid air into the machine, passes through the heat exchanger, and the water molecules in the air condense into water droplets. The treated dry air is discharged out of the machine. This cycle keeps the indoor humidity at an appropriate relative humidity. At present, semiconductor dehumidifiers are commonly used for dehumidification. The air duct structure of existing semiconductor dehumidifiers often consumes power and has a large volume while meeting sufficient dehumidification capacity, and cannot work in crowded and narrow environments; while smaller volumes often have low dehumidification efficiency and insufficient dehumidification depth. Summary of the invention

[0003] In view of this, the present invention provides an air duct assembly and a dehumidifier having the same to solve the above problems, specifically:

[0004] A first aspect of the present invention provides an air duct assembly, the air duct assembly comprising: a top cover, a shell, a partition, a refrigeration electrode and a fan,

[0005] The top cover is provided with an air inlet;

[0006] The shell comprises a shell bottom wall and a shell side wall surrounding the shell bottom wall, the shell bottom wall and the shell side wall form a receiving portion, wherein the shell side wall is provided with an air outlet;

[0007] The top cover cooperates with the outer shell to form an air cavity;

[0008] The partition divides the air cavity into an air inlet and an air outlet. The partition cooperates with the top cover to form the air inlet and cooperates with the shell to form the air outlet.

[0009] The inlet of the air inlet duct is connected to the air inlet, the outlet of the air inlet duct is connected to the inlet of the air outlet duct, and the outlet of the air outlet duct is connected to the air outlet;

[0010] The fan is used to accelerate the wind speed of the air inlet duct and / or the air outlet duct;

[0011] The cooling electrode is arranged in the air outlet duct along the extension direction of the air outlet duct, and includes a cold surface and a hot surface. A first sub-air outlet duct is formed between the cold surface and the partition, and a second sub-air outlet duct is formed between the hot surface and the shell.

[0012] Further optionally, the cross-sectional area of ​​the first sub-air outlet duct gradually increases along the air supply flow direction of the air outlet duct; and the cross-sectional area of ​​the second sub-air outlet duct gradually decreases along the air supply flow direction.

[0013] Further optionally, the side wall of the outer shell adopts a cylindrical structure, including a first end of the side wall and a second end of the side wall, the first end of the side wall is connected to the bottom wall of the outer shell, and the second end of the side wall is assembled with the top cover, wherein the barrel mouth of the side wall of the outer shell gradually increases along the direction from the first end of the side wall to the second end of the side wall.

[0014] Further optionally, the partition adopts a cylindrical structure, including a first end of the partition and a second end of the partition, the first end of the partition is a free end, and the second end of the partition is detachably connected to the top cover, wherein the cylindrical mouth of the partition gradually increases along the direction from the first end of the partition to the second end of the partition.

[0015] Further optionally, the cooling electrode adopts a cylindrical structure, including a first end of the cooling electrode and a second end of the cooling electrode, wherein the tube mouth of the cooling electrode gradually increases along the direction from the first end of the cooling electrode to the second end of the cooling electrode.

[0016] Further optionally, the first end of the refrigeration electrode is arranged close to the outlet of the fan, and separates the inlet of the air outlet to form a first sub-air outlet inlet and a second sub-air outlet inlet, wherein: the inlet of the first sub-air outlet is communicated with the outlet of the fan, and the inlet of the second sub-air outlet is communicated with the outlet of the fan,

[0017] The second end of the refrigeration electrode is detachably connected to the side wall of the shell.

[0018] Further optionally, a first position-limiting support member and a second position-limiting support member are provided on the side wall of the housing, wherein:

[0019] The first limiting support member is arranged on the inner side of the shell side wall, and is used to abut the hot surface according to a preset wedge angle between the cooling electrode and the shell side wall, so as to support the cooling electrode and limit the position of the cooling electrode in its axial direction;

[0020] The second limiting support member is arranged on the inner side of the shell side wall, and is used to abut against the second end of the cooling electrode to support the cooling electrode and limit the position of the cooling electrode in its axial direction.

[0021] Further optionally, the top cover includes a top cover lower concave portion, a top surface and a top cover connecting portion which are concentrically arranged outward from the center of the top cover.

[0022] The lower recessed portion of the top cover comprises a lower recessed side wall and a lower recessed bottom wall, wherein: the lower recessed side wall is a cylindrical structure, comprising a lower recessed side wall first end connected to the lower recessed bottom wall and a lower recessed side wall second end connected to the top surface, wherein along the direction from the lower recessed side wall first end to the lower recessed side wall second end, the barrel opening of the lower recessed side wall gradually increases;

[0023] The top surface is provided with the air inlet;

[0024] The top cover connecting portion is used to be connected to the outer shell.

[0025] Further optionally, the side wall of the shell, the cooling electrode, the partition, and the side wall of the recessed portion are all coaxially arranged.

[0026] Further optionally, the bottom wall of the recessed portion is located on a side close to the first end of the side wall, the first end of the partition is located on a side close to the first end of the side wall, the first end of the cooling electrode is located on a side close to the first end of the side wall, and the air outlet is arranged close to the second end of the side wall.

[0027] Further optionally, the fan includes a motor and a centrifugal wind wheel connected to the motor, the motor is fixed on the bottom wall of the lower recess; the centrifugal wind wheel is arranged in the wind cavity and located between the outlet of the air inlet duct and the inlet of the air outlet duct, wherein:

[0028] The inlet of the fan is communicated with the outlet of the air inlet duct, and the outlet of the fan is communicated with the inlet of the air outlet duct.

[0029] Further optionally, the gap between the first end of the cooling electrode and the wind wheel is no more than 5 mm, the distance between the second end of the cooling electrode and the side wall of the shell is 3 mm-5 mm, and the preset wedge angle is 5°-6°.

[0030] A second aspect of the present invention discloses a dehumidifier, which includes any one of the above-mentioned air duct components.

[0031] Beneficial effects: The present invention improves the semiconductor dehumidifier and provides an air duct assembly and a dehumidifier, which can be suitable for a smaller space, can quickly condense and discharge moisture in the air, and has a good dehumidification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail its exemplary embodiments with reference to the accompanying drawings. The accompanying drawings described below are only some embodiments of the present disclosure, and it is clear to a person skilled in the art that other accompanying drawings can be obtained from these accompanying drawings without creative work.

[0033] Figure 1 An exploded view of an air duct assembly according to an embodiment of the present invention is shown;

[0034] Figure 2 A front view of an air duct assembly according to an embodiment of the present invention is shown;

[0035] Figure 3 A top view of an air duct assembly according to an embodiment of the present invention is shown;

[0036] Figure 4 A cross-sectional view of an air duct assembly according to an embodiment of the present invention is shown;

[0037] Figure 5 An enlarged view of the connection between the motor and the wind wheel in the wind duct assembly of an embodiment of the present invention is shown;

[0038] Figure 6 A partial enlarged view of an air inlet and an air outlet in an air duct assembly according to an embodiment of the present invention is shown;

[0039] In the figure: 1-top cover; 2-partition; 3-housing; 4-cooling electrode; 5-motor; 6-wind wheel; 7-motor screw; 8-hexagonal nut; 9-elastic washer; 10-flat washer; 11-support rib; 12-spring buckle; 13-blade reinforcement ring. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0042] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0044] The air duct structure of existing semiconductor dehumidifiers often consumes power and has a large volume while meeting the requirement of sufficient dehumidification, and cannot work in crowded and narrow environments; while those with a smaller volume often have low dehumidification efficiency and insufficient dehumidification depth. Therefore, the present invention improves the air duct assembly in the dehumidifier so that it can also have a high dehumidification efficiency under the condition of a small volume. The air duct assembly and the dehumidifier having it can effectively reduce the relative humidity in the space, solving the technical problems of low energy efficiency and large cooling loss of general semiconductor dehumidifiers. While improving the refrigeration energy efficiency, it also achieves the technical effect of reducing noise, and at the same time promotes the miniaturization of the overall structural design of the dehumidifier.

[0045] To further illustrate the present invention, Figure 1-6 As shown, the following specific embodiments are now provided.

[0046] Example 1

[0047] In the present embodiment, a duct assembly is provided, and the duct assembly includes: a top cover, an outer shell, a partition, a refrigeration electrode and a fan. The air inlet of the duct assembly is arranged on the top cover; the outer shell includes an outer shell bottom wall and an outer shell side wall surrounding the outer shell bottom wall, and the outer shell bottom wall and the outer shell side wall form a receiving portion, wherein the air outlet of the duct assembly is arranged on the outer shell side wall. The top cover is detachably connected to the outer shell, and cooperates with the outer shell to form an air cavity. The partition separates the air cavity, and the air cavity is separated into an air inlet and an air outlet by the partition, wherein the partition cooperates with the top cover to form the air inlet, and cooperates with the outer shell to form the air outlet. Further, the air outlet extends in the direction of the outer shell side wall, wherein: the inlet of the air inlet is connected to the air inlet, the outlet of the air inlet is connected to the inlet of the air outlet, and the outlet of the air outlet is connected to the air outlet.

[0048] The fan in the air duct assembly can accelerate the wind speed of the air inlet and / or the air outlet. Preferably, the fan is arranged between the outlet of the air inlet and the inlet of the air outlet.

[0049] The cooling electrode is arranged in the air outlet duct along the extension direction of the air outlet duct, and comprises a cold surface and a hot surface. A first sub-air outlet duct is formed between the cold surface and the partition, and a second sub-air outlet duct is formed between the hot surface and the shell.

[0050] The air duct assembly achieves negative pressure air intake and controls the air flow rate on the cold and hot surfaces of the semiconductor cooling electrode by setting the position angle of the air outlet (of the centrifugal wind wheel in the fan) and the semiconductor cooling electrode, and at the same time uses the low-temperature air outlet of the cold surface of the cooling electrode to pre-cool the dehumidifier air intake. This improved structure increases the wet load of the cooling electrode, improves the dehumidification efficiency, and effectively reduces the relative humidity in the space where the dehumidifier (using the air duct assembly) is located.

[0051] In this embodiment, after the air outlet is divided by the cooling electrode, the cross-sectional area of ​​the first sub-air outlet gradually increases along the air supply flow direction of the air outlet; and the cross-sectional area of ​​the second sub-air outlet gradually decreases along the air supply flow direction.

[0052] In some optional implementations, the side wall of the shell adopts a cylindrical structure, including a first end of the side wall and a second end of the side wall, the first end of the side wall is connected to the bottom wall of the shell, and the second end of the side wall is assembled with the top cover, wherein the barrel opening of the side wall of the shell gradually increases along the direction from the first end of the side wall to the second end of the side wall. That is, at this time, the accommodating portion formed by the side wall of the shell and the bottom wall of the shell is a structure with a large top and a small bottom. In order to achieve miniaturization, the refrigeration electrode separator and part of the top cover can be built into the accommodating portion. At this time, the complete air supply duct connected by the air inlet duct and the air outlet duct adopts a folded arrangement, and the air inlet duct and the air outlet duct are separated by only one plate, such as Figure 4 Preferably, the air outlet is arranged near the second end of the side wall, and the air outlet comprises: a plurality of small air outlets corresponding to the rotation direction of the air supply in the air outlet duct.

[0053] Correspondingly, in order to match the outer shell, the partition also adopts a cylindrical structure, including a first end of the partition and a second end of the partition, the first end of the partition is a free end, and the second end of the partition is detachably connected to the top cover, wherein along the direction from the first end of the partition to the second end of the partition, the cylindrical mouth of the partition gradually increases.

[0054] Accordingly, the cooling electrode adopts a cylindrical structure, including a first end of the cooling electrode and a second end of the cooling electrode, wherein the cylindrical opening of the cooling electrode gradually increases from the first end of the cooling electrode to the second end of the cooling electrode. This structure can make full use of the air outlet space in the air outlet duct, so that it is more in contact with the air outlet.

[0055] In some optional implementations, the first end of the cooling electrode is disposed near the outlet of the fan and separates the inlet of the air outlet to form a first sub-air outlet inlet and a second sub-air outlet inlet. The inlet of the first sub-air outlet is connected to the outlet of the fan, and the inlet of the second sub-air outlet is connected to the outlet of the fan. The second end of the cooling electrode is detachably connected to the side wall of the housing.

[0056] In order to achieve stable installation of the cooling electrode in the air outlet duct, a first limiting support and a second limiting support are provided on the side wall of the outer shell. Wherein: the first limiting support is arranged on the inner side of the side wall of the outer shell, and can abut against the hot surface. Optionally, when the first limiting support adopts a supporting rib, the supporting rib is wedge-shaped, and its wedge angle is consistent with a preset wedge angle, wherein: the wedge angle of the supporting rib refers to the angle formed between the side of the wedge close to the cooling electrode and the side wall of the outer shell, and the preset wedge angle is the angle between the hot surface of the cooling electrode and the inner wall of the side wall of the outer shell. At this time, when the cooling electrode is installed in the air duct, the supporting rib can be used to support the cooling electrode and limit the position of the cooling electrode in its axial direction, so that the cooling electrode cannot move further after reaching the preset position when installed toward the bottom of the outer shell.

[0057] The second limiting support is also arranged on the inner side of the side wall of the housing, and is used to abut against the second end of the cooling electrode to support the cooling electrode and limit the position of the cooling electrode in its axial direction. Optionally, the second limiting support is a spring buckle, and when the second end of the cooling electrode slides into the spring buckle, it is clamped to prevent it from sliding out again.

[0058] Furthermore, to ensure the symmetrical fixation of the cooling electrode in the air outlet, the number of the first limit support members is at least three. When three are used, the angle between the two first limit support members is 120°. When more first limit support members are used, the number is determined according to specific needs, as long as the distribution is uniform. The number and arrangement of the second limit support members are similar to those of the first limit support members. Preferably, the second limit support members correspond to the first limit support members one by one.

[0059] In some optional embodiments, the top cover includes a top cover lower recess, a top surface and a top cover connecting portion which are concentrically arranged in sequence from the center of the top cover to the outside. The top cover lower recess includes a lower recess side wall and a lower recess bottom wall. Wherein: the lower recess side wall is a cylindrical structure, including a lower recess side wall first end connected to the lower recess bottom wall and a lower recess side wall second end connected to the top surface, wherein the barrel mouth of the lower recess side wall gradually increases along the direction from the first end of the lower recess side wall to the second end of the lower recess side wall. The lower recess cooperates with the partition to form a regular air inlet duct, which adopts a ring cone design method, and the cross-sectional area of ​​the air inlet duct gradually decreases along the air inlet flow direction. An air inlet is provided on the top surface; the top cover connecting portion is used to connect with the outer shell.

[0060] In this embodiment, preferably, the side wall of the housing, the cooling electrode, the partition, and the side wall of the lower recess are all coaxially arranged. The bottom wall of the lower recess is located on a side close to the first end of the side wall, the first end of the partition is located on a side close to the first end of the side wall, the first end of the cooling electrode is located on a side close to the first end of the side wall, and the air outlet is arranged close to the second end of the side wall.

[0061] In some implementations, the fan includes a motor and a wind wheel connected to the motor. The motor is fixed on the bottom wall of the lower recess; the wind wheel is arranged in the wind cavity and is located between the outlet of the air inlet and the inlet of the air outlet. Among them: the inlet of the fan is connected to the outlet of the air inlet, and the outlet of the fan is connected to the inlet of the air outlet. When the fan adopts a centrifugal fan, its wind wheel is a centrifugal wind wheel. At this time, the air supplied at the outlet of the air inlet enters the centrifugal wind wheel axially, and is radially sent out through the centrifugal wind wheel, and at this time, it enters the inlet of the first sub-outlet and the inlet of the second sub-outlet, respectively.

[0062] The air duct assembly in the present invention controls the air flow rate on the cold and hot surfaces of the semiconductor refrigeration electrode by cleverly setting the position angle of the centrifugal wind wheel outlet and the semiconductor refrigeration electrode, so that the wind speed passing through the cold surface of the refrigeration electrode is less than the wind speed passing through the hot surface of the refrigeration electrode, thereby greatly reducing the proportion of the sensible heat of the air passing through the cold surface of the refrigeration electrode in the refrigeration capacity of the semiconductor refrigeration electrode, and effectively increasing the proportion of the phase change latent heat of water vapor in the air in the refrigeration capacity of the refrigeration electrode, thereby ensuring that the cold surface of the semiconductor refrigeration electrode filters moisture from the air under low relative humidity conditions.

[0063] The partition of the air duct assembly is made of thin sheet metal, so that the air inlet duct has a thin sheet metal that can effectively transfer heat. The low-temperature air outlet of the cold surface of the cooling electrode is used to pre-cool the dehumidifier inlet air, thereby reducing the inlet air temperature and increasing the relative humidity, making it close to saturated wet air or saturated air. When the pre-cooled air enters the cold surface of the cooling electrode, the wet load of the cooling electrode is increased, the dehumidification efficiency is improved, and the relative humidity in the space where the dehumidifier is located is effectively reduced.

[0064] The entire air duct structure is designed in a conical shape, which makes the air inlet and outlet area larger, thereby accelerating the heat exchange and improving the dehumidification efficiency of the entire dehumidifier compared to existing ordinary semiconductor dehumidifiers.

[0065] Reference below Figure 1-Figure 6 The invention discloses an air duct assembly applicable to a semiconductor dehumidifier and provides a specific installation method thereof.

[0066] The air duct assembly suitable for semiconductor dehumidifiers includes a top cover 1, a partition 2, a housing 3, a cooling electrode 4, a motor 5 and a centrifugal fan wheel 6, a motor screw 7, a hexagonal nut 8, an elastic washer 9, a flat washer 10, a supporting rib 11, a spring buckle 12, and a blade reinforcement ring 13. The partition 2 is stamped from a hot-dip galvanized sheet with a thickness of 0.5 mm.

[0067] like Figure 1 As shown, the top cover 1 is rotatably connected to the outer shell 3 by means of a spiral buckle. The upper end of the outer shell 3 in the figure is shown as a circular air outlet of the semiconductor dehumidifier.

[0068] like Figure 2As shown, the motor 5 is fixedly connected to the top cover 1 through three motor screws 7. The upper end surface of the top cover 1 in the figure shows the annular air inlet of the semiconductor dehumidifier.

[0069] like Figure 3-5 As shown. The air duct assembly of the semiconductor dehumidifier of the present invention, wherein the top cover 1 is rotatably connected to the outer shell 3 by means of a spiral buckle, which can be quickly disassembled and assembled; the partition 2 and the top cover 1 can be connected by means of screws or buckles, and a ring-shaped air inlet channel is formed between the partition 2 and the top cover 1 (the partition 2 and the top cover 1 are also connected by means of a screw mouth, and a ring-shaped air inlet channel is formed between the partition 2 and the top cover 1); the ring-shaped conical cooling electrode 4 can be fixed on the outer shell 3 by means of a snap-fit ​​or snap-fastening method (the ring-shaped conical cooling electrode 4 is supported by four supporting ribs 11 evenly distributed circumferentially on the outer shell 3, and the four snap-fastenings 12 evenly distributed circumferentially on the outer shell 3 are used for limiting), and a wedge-shaped circumferential air outlet channel is formed between the cooling electrode 4 and the outer shell 3 (a first sub-air outlet channel of the wedge-shaped circumferential air outlet is formed, and preferably, the wedge angle is within 5 -6°, the upper air outlet gap is between 3-5mm), and a gradually widening circumferential air outlet channel (a gradually widening circumferential air outlet second sub-air outlet channel) is formed between the partition 2 and the cooling electrode 4; the motor 5 is placed on the motor mounting support protrusion of the top cover 1 (the motor 5 is vertically downwardly mounted on the motor mounting boss inside the top cover 1), and is fixedly connected to the top cover 1 by three motor screws 7, and the motor shaft extends out through the small hole reserved at the bottom of the top cover 1; the centrifugal wind wheel 6 is fixed to the motor shaft end by using a hexagonal nut 8, an elastic washer 9 and a flat washer 10, and the blade reinforcement ring 13 on the upper end edge of the centrifugal wind wheel 6 is just below the first end of the partition to ensure smooth air intake; at the same time, the upper half of the centrifugal wind wheel 6 is located inside the cooling electrode 4, and the horizontal single-sided gap between the centrifugal wind wheel 6 and the cooling electrode 4 is controlled within 5mm. (The centrifugal wind wheel 6 is divided into two upper and lower areas by the cooling electrode. The centrifugal wind wheel 6 occupies half of each area. To prevent air circulation between the upper and lower areas, the horizontal single-side gap between the centrifugal wind wheel 6 and the cooling electrode 4 is controlled within 5 mm.)

[0070] like Figure 6 As shown, the air in the embodiment of the present invention flows into the air inlet duct formed by the top cover 1 and the partition 2 under the negative pressure generated by the centrifugal wind wheel 6, and is thrown out in the circumferential direction under the action of the centrifugal force, and respectively enters the two air outlet channels formed by the cooling electrode 4 and the housing 3 and the partition 2, and finally flows out through the air outlet. Among them, the inner side of the cooling electrode 4 is the cold side, and the outer side is the hot side.

[0071] The specific implementation process of the present invention is as follows: the air duct structure of the existing semiconductor dehumidifier often consumes power and has a large volume while meeting the requirement of sufficient dehumidification, and cannot work in a crowded and narrow environment. The smaller volume often has low dehumidification efficiency and insufficient dehumidification depth, and it is generally difficult to reduce the relative humidity to below 50%. In the air duct structure of the semiconductor dehumidifier of the present invention, the motor 5 starts to drive the centrifugal wind wheel 6 to rotate to generate negative pressure, and the air is pressed into the air inlet duct and thrown out in the circumferential direction under the action of the centrifugal wind wheel 6. The cooling electrode 4 divides the air outlet of the centrifugal wind wheel 6 into two parts, the upper and lower parts. The first sub-air outlet (upper air outlet channel) is formed by the partition 2 and the cooling electrode 4, and is a gradually widened structure, and the channel cross-section gradually increases from the inside to the outside; the second sub-air outlet (lower air outlet channel) is formed by the cooling electrode 4 and the shell 3, and is a wedge-shaped structure, and the channel cross-section gradually decreases from the inside to the outside. When the speed of the centrifugal wind wheel remains unchanged, the air intake per unit time remains basically unchanged, and the air intake per unit time entering the upper air outlet channel and the lower air outlet channel is also fixed. According to the principle of fluid mechanics, the air flow rate of the lower air outlet channel will be significantly higher than that of the upper air outlet channel. Then, the air flow rate passing through the cold surface of the cooling electrode 4 is significantly lower than the air flow rate passing through the hot surface of the cooling electrode 4, so that the proportion of the sensible heat of the air passing through the cold surface in the cooling capacity of the semiconductor cooling electrode 4 is greatly reduced, and the proportion of the phase change latent heat of water vapor in the air in the cooling capacity of the cooling plate is effectively increased, ensuring that the cold surface of the semiconductor cooling plate filters moisture from the air under low relative humidity conditions. At the same time, by making the partition 2 into a thin sheet metal part that can effectively transfer heat (at the same time, part of the cold in the upper air outlet channel is transferred to the air intake channel through the partition 2), the low-temperature air outlet of the cold surface of the cooling electrode 4 is used to pre-cool the dehumidifier intake air, thereby reducing the intake air temperature and increasing the relative humidity, making it close to saturated wet air or saturated air. When the pre-cooled air enters the cold surface of the cooling electrode 4, the wet load of the cooling plate is increased, the dehumidification efficiency is improved, and the relative humidity in the space where the dehumidifier is located is effectively reduced to below 50%. At the same time, when the pre-cooled air enters the hot surface of the cooling electrode 4, it can further absorb more heat and accelerate the discharge of heat from the hot surface of the cooling electrode 4. In addition, because the hot surface of the cooling electrode 4 is close to the casing, a considerable part of the heat is directly radiated to the environment through the casing.

[0072] Example 2

[0073] In this embodiment, a dehumidifier is provided, which is any one of the air duct components in the dehumidifier embodiment 1. Based on the above air duct component, the dehumidifier has a special air duct structure of "top inlet and side outlet", so that the air flow resistance in the air duct is small, and only a centrifugal fan is arranged at the bottom of the annular cone-shaped semiconductor refrigeration electrode to realize the flow of air in the air duct, which simplifies the structure of the whole dehumidifier and saves the energy consumption of the whole dehumidifier.

[0074] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. An air duct assembly, characterized in that: The air duct assembly includes: a top cover, a shell, a partition, a refrigeration electrode and a fan. The top cover is provided with an air inlet; The shell comprises a shell bottom wall and a shell side wall surrounding the shell bottom wall, the shell bottom wall and the shell side wall form a receiving portion, wherein the shell side wall is provided with an air outlet; The top cover cooperates with the outer shell to form an air cavity; The partition divides the air cavity into an air inlet and an air outlet, wherein the partition cooperates with the top cover to form the air inlet and cooperates with the housing to form the air outlet; The inlet of the air inlet duct is connected to the air inlet, the outlet of the air inlet duct is connected to the inlet of the air outlet duct, and the outlet of the air outlet duct is connected to the air outlet; The fan is used to accelerate the wind speed of the air inlet duct and / or the air outlet duct; The cooling electrode is arranged in the air outlet along the extension direction of the air outlet, and comprises a cold surface and a hot surface, a first sub-air outlet is formed between the cold surface and the partition, and a second sub-air outlet is formed between the hot surface and the shell; The cross-sectional area of ​​the first sub-air outlet duct gradually increases along the air supply flow path direction of the air outlet duct; the cross-sectional area of ​​the second sub-air outlet duct gradually decreases along the air supply flow path direction; One end of the refrigeration electrode is arranged close to the outlet of the fan and separates the inlet of the air outlet to form a first sub-air outlet inlet and a second sub-air outlet inlet, wherein: the inlet of the first sub-air outlet is connected to the outlet of the fan, and the inlet of the second sub-air outlet is connected to the outlet of the fan.

2. The air duct assembly according to claim 1, characterized in that: The side wall of the shell adopts a cylindrical structure, including a first end of the side wall and a second end of the side wall, wherein the first end of the side wall is connected to the bottom wall of the shell, and the second end of the side wall is assembled with the top cover, wherein the barrel opening of the side wall of the shell gradually increases along the direction from the first end of the side wall to the second end of the side wall.

3. The air duct assembly according to claim 2, characterized in that: The separator adopts a cylindrical structure, including a first end of the separator and a second end of the separator, wherein the first end of the separator is a free end, and the second end of the separator is detachably connected to the top cover, wherein the barrel opening of the separator gradually increases along the direction from the first end of the separator to the second end of the separator.

4. The air duct assembly according to claim 3, characterized in that: The cooling electrode adopts a cylindrical structure, including a first end of the cooling electrode and a second end of the cooling electrode, wherein the tube opening of the cooling electrode gradually increases along the direction from the first end of the cooling electrode to the second end of the cooling electrode.

5. The air duct assembly according to claim 1, characterized in that: The second end of the refrigeration electrode is detachably connected to the side wall of the shell.

6. The air duct assembly according to claim 5, characterized in that: The side wall of the housing is provided with a first limiting support member and a second limiting support member, wherein: The first limiting support member is arranged on the inner side of the shell side wall, and is used to abut the hot surface according to a preset wedge angle between the cooling electrode and the shell side wall, so as to support the cooling electrode and limit the position of the cooling electrode in its axial direction; The second limiting support member is arranged on the inner side of the shell side wall, and is used to abut against the second end of the cooling electrode to support the cooling electrode and limit the position of the cooling electrode in its axial direction.

7. The air duct assembly according to any one of claims 4 to 6, characterized in that: The top cover comprises a top cover lower concave portion, a top surface and a top cover connecting portion which are arranged concentrically outward from the center of the top cover. The lower recessed portion of the top cover comprises a lower recessed side wall and a lower recessed bottom wall, wherein: the lower recessed side wall is a cylindrical structure, comprising a lower recessed side wall first end connected to the lower recessed bottom wall and a lower recessed side wall second end connected to the top surface, wherein along the direction from the lower recessed side wall first end to the lower recessed side wall second end, the barrel opening of the lower recessed side wall gradually increases; The top surface is provided with the air inlet; The top cover connecting portion is used to be connected to the outer shell.

8. The air duct assembly according to claim 7, characterized in that: The shell side wall, the cooling electrode, the partition, and the recessed portion side wall are all coaxially arranged.

9. The air duct assembly according to claim 8, characterized in that: The bottom wall of the recessed portion is located on a side close to the first end of the side wall, the first end of the partition is located on a side close to the first end of the side wall, the first end of the cooling electrode is located on a side close to the first end of the side wall, and the air outlet is arranged close to the second end of the side wall.

10. The air duct assembly according to claim 9, characterized in that: The fan comprises a motor and a centrifugal wind wheel connected to the motor, wherein the motor is fixed on the bottom wall of the lower recess; the centrifugal wind wheel is arranged in the wind cavity and located between the outlet of the air inlet duct and the inlet of the air outlet duct, wherein: The inlet of the fan is communicated with the outlet of the air inlet duct, and the outlet of the fan is communicated with the inlet of the air outlet duct.

11. A dehumidifier, characterized in that: The dehumidifier comprises the air duct assembly according to any one of claims 1-10.

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