Dehumidifier

CN224932865UActive Publication Date: 2026-11-03LG ELECTRONICS INC
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Patent Information

Application Number
CN202390000777.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2023-09-08
Filing Date
2023-09-26
Publication Date
2026-11-03
Estimated Expiration
2033-09-26

AI Technical Summary

Technical Problem

现有除湿机在空气吐出性能和噪音控制方面存在不足,尤其是在流动阻力和噪音产生方面,且吐出部的设计导致空气流动不均匀和死区的存在。

Method used

The design employs a vortex shroud, aligning the fan's exhaust portion with the centerline of the exhaust section. A fastening mechanism is used to combine the shroud body and the throttling orifice, forming a circular or elliptical exhaust section. This reduces flow path bends and dead zones, improving flow performance. Furthermore, the cutouts and chamfers prevent air re-intake and reduce noise.

Benefits of technology

It improves airflow velocity and discharge performance, reduces flow resistance and noise, ensures uniform air discharge, reduces flow loss and noise generation, and stabilizes the dehumidifier's center of gravity balance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a dehumidifier. According to the utility model's scroll cover body includes the cutout part of the boundary of the suction side and the discharge side of the fan, and the center line of the up-down direction through the cutout part can pass through the first area in the left and right first area and the second area of dehumidifier upper surface. When defining the suction side flow path and the discharge side flow path of air divided into two sides relative to the rotation direction of the fan with the center of the fan as the reference, the cutout part can be configured in the discharge side flow path.
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Description

Technical Field

[0001] This utility model relates to a dehumidifier. Background Technology

[0002] A dehumidifier is a household appliance that draws in air from a desired space, removes moisture from the air through heat exchange, and then releases the dehumidified air into the desired space, thereby reducing the humidity of the desired space.

[0003] The dehumidifier draws in air from the required space and passes it through a heat exchanger consisting of a condenser and an evaporator, thereby exchanging heat between the refrigerant flowing in the condenser and evaporator and the air flowing through it to remove moisture.

[0004] The evaporator absorbs heat from the surrounding air by evaporating liquid refrigerant, and the condenser releases heat by condensing gaseous refrigerant, thereby transferring heat to the surrounding air.

[0005] That is, the air flowing through the heat exchanger exchanges heat with the refrigerant while flowing through the evaporator, thereby reducing the humidity. The air with reduced humidity then flows through the condenser and exchanges heat with the refrigerant, thereby carrying out the drying process.

[0006] As it flows through the heat exchanger, the dried air is expelled into the desired space, thereby reducing the humidity in the air of the desired space.

[0007] As the dehumidified air is expelled through the exhaust section, it is necessary to improve the exhaust performance and prevent excessive noise. Utility Model Content

[0008] Problems to be solved by utility models

[0009] The purpose of this invention is to provide a dehumidifier that can increase the airflow velocity and improve the discharge performance by centrally generating the airflow discharged from the fan.

[0010] Another objective of this invention is to provide a dehumidifier with a circular or elliptical discharge portion having a distance from the center of the discharge portion to the edge of the discharge portion that is the same or similar, so as to reduce dead zones in the discharge portion.

[0011] Another objective of this invention is to provide a dehumidifier in which the discharge part of the dehumidifier is directly connected to the discharge part of the fan cover, thereby reducing the discharge flow resistance and increasing the airflow from the fan.

[0012] Another objective of this invention is to provide a dehumidifier that reduces the curvature of the discharge path or the change in the flow area and improves the flow performance by constructing a circular discharge portion corresponding to the discharge portion.

[0013] Another objective of this invention is to provide a dehumidifier that reduces noise caused by airflow biased to one side of the dehumidifier by positioning the center of the discharge section on the centerline of the dehumidifier.

[0014] Another objective of this invention is to provide a dehumidifier in which the center of the discharge portion of the fan housing connected to the discharge portion is also located on the centerline of the dehumidifier, thereby enabling the flow discharged from the discharge portion to be quickly discharged through the discharge portion without loss.

[0015] Another objective of this invention is to provide a dehumidifier that can form a stable center of gravity by fastening the body of the fan housing and the throttling hole along the centerline of the dehumidifier.

[0016] Another objective of this invention is to provide a dehumidifier that easily ensures the flow path space of the fan installed on the shroud body and the installation space of the heat exchanger supported by the throttling orifice by placing the fastening area of ​​the shroud body and the throttling orifice on the center line of the discharge portion.

[0017] Another objective of this invention is to provide a dehumidifier that can reduce flow resistance and noise caused by the flow resistance by improving the structure and configuration of the fan and fan cover.

[0018] Another objective of this invention is to provide a dehumidifier that improves the heat exchange performance and flow performance of air by placing the heat exchanger closer to the exhaust side flow path of the fan housing and arranging the center of the exhaust portion adjacent to the center of the exhaust side flow path.

[0019] Another objective of this invention is to provide a dehumidifier that prevents air expelled from the fan from being re-inhaled by constructing a vortex portion that expands the fan flow path in a circumferential direction and positioning the center of the cut portion between the center of the fan and the center of the discharge portion.

[0020] Another objective of this invention is to provide a dehumidifier in which the cut portion is configured to protrude from the inner surface of the cover body toward the center of the discharge portion, thereby improving the flow performance.

[0021] Another objective of this invention is to provide a cutout having multiple portions extending with different curvatures or directions to clearly distinguish the boundaries between the intake and exhaust sides of a fan.

[0022] Another objective of this invention is to provide a funnel-shaped chamfered portion disposed on the exhaust side of a fan housing to expand the flow path of the air exhausted from the fan.

[0023] Another objective of this invention is to provide a guide rib disposed on the intake side of the fan housing to prevent air flowing through the fan from being re-inhaled into the fan during the exhaust process.

[0024] Another objective of this invention is to provide a vortex portion in which the fan flow path can be expanded based on the cutout portion, thereby allowing the circular discharge portion and the discharge portion of the fan cover to be combined in corresponding shapes.

[0025] means for solving problems

[0026] The dehumidifier according to an embodiment of the present invention may include: a fan that draws in air axially and discharges it radially; and a vortex shroud.

[0027] The center of the discharge portion of the vortex cover and the center of the discharge section can be arranged adjacent to each other or on the same center line so that the airflow discharged from the fan can be concentrated and discharged through the discharge section.

[0028] The center of the discharge section can be located on the center line of the dehumidifier.

[0029] The center of the discharge section can be located on the center line of the dehumidifier.

[0030] The centerline of the dehumidifier can be defined as an imaginary line passing through the center of gravity of the dehumidifier.

[0031] The center of the ejection portion and the center of the ejection part can be the same.

[0032] The discharge portion of the fan housing can be formed by combining a first discharge portion of the housing body and a second discharge portion of the throttling orifice.

[0033] The cover body and the throttling orifice can be joined together by a fastening mechanism disposed on the outer peripheral surface of the vortex.

[0034] The fastening mechanism may include a plurality of fastening mechanisms arranged spaced apart from each other along the outer peripheral surface of the vortex.

[0035] The fastening mechanism can be located on the center line of the dehumidifier or on a straight line that divides the discharge section into two equal parts.

[0036] The ejector portion may include a circular or elliptical ejector portion with a distance of the same or similar distance from the center of the ejector portion to its outer peripheral surface.

[0037] The dehumidification mechanism draws in air from the back and discharges it upwards, with the discharge portion formed on the top surface of the dehumidifier.

[0038] The discharge portion can be formed in a first region within a first region and a second region defined on both sides of the top surface center of the dehumidifier.

[0039] The ejector portion may be located adjacent to the side edge of the top surface, and the two ends of the ejector portion may be located in the first region.

[0040] A centerline running vertically through the center of the fan can pass through the second region.

[0041] The center of the discharge section is off-center relative to the center of the fan, and the vertical centerline passing through the center of the heat exchanger or the center of the dehumidifier can be located between the vertical centerline passing through the center of the discharge section and the vertical centerline passing through the center of the fan.

[0042] The vortex cover may include a cutout that forms the boundary between the intake and exhaust sides of the fan, and a center line in the vertical direction passing through the center of the cutout may pass through a first region of the top surface.

[0043] When the air intake flow path and exhaust flow path are defined on both sides relative to the fan's rotation direction, with the center of the fan as the reference, the cutout can be configured in the exhaust flow path.

[0044] When the intersection of the extended line passing through the center of the fan in the vertical direction is defined as the starting point (0 degrees), the cut-out portion is formed at a location within a range of 270 degrees or more and 360 degrees, with the fan's rotation direction as the reference.

[0045] The cutout can be positioned off-center from the center of the fan towards the discharge portion.

[0046] The cutout may include a first end closest to the outer peripheral surface of the fan and a second end closest to the ejection portion of the fan housing.

[0047] The cut portion can be formed such that its thickness is greatest at the first end.

[0048] The outer surface of the cut extends obliquely from the first end to the second end relative to the center line in the vertical direction.

[0049] The outer surface of the cut portion may include a first curved surface extending with a first curvature to separate the exhaust side flow path of the fan and the intake side flow path of the fan.

[0050] The outer surface of the cut portion may also include a straight portion extending linearly from the curved portion toward the exhaust portion of the fan housing.

[0051] The outer surface of the cut portion may also include a second curved portion extending from the straight portion to the exhaust portion of the fan housing with a second curvature.

[0052] The fan housing may be configured to include an exhaust portion that expels air, and protrude from one end of the exhaust portion toward the center of the exhaust portion.

[0053] The fan housing may include a fan mounting section for mounting the fan and a vortex section surrounding the fan and expanding the airflow path along the fan's rotation direction.

[0054] The fan housing may also include an exhaust guide recessed in the fan mounting portion, thereby expanding the airflow path to the exhaust portion.

[0055] The ejection guide can be formed by bending with a curvature corresponding to the curvature of the ejection portion, so as to correspond to the circular shape of the ejection portion.

[0056] The fan housing may also include a chamfered portion, which widens the airflow path as the air flows from the exhaust side path to the exhaust portion of the fan housing.

[0057] The chamfered portion can extend obliquely from the support plate supporting the heat exchanger to the discharge portion in the direction of expanding the flow path.

[0058] The chamfered portion may have a funnel-shaped portion.

[0059] The fan housing includes a flared opening forming an intake section, and guide ribs are provided adjacent to the flared opening to prevent air expelled from the fan from being drawn back into the fan's intake side.

[0060] The fan housing includes an exhaust guide portion that extends in an arc shape corresponding to the circular exhaust portion, and a chamfered portion, thereby significantly increasing the area of ​​the exhaust side flow path based on the fan's rotation direction.

[0061] In one aspect of this invention, a dehumidifier may include: a main body comprising a rear portion having an intake portion, a front portion facing the rear portion, a top portion having an exhaust portion, and a side portion connecting the rear portion and the front portion; and a heat exchanger disposed inside the main body and exchanging heat with air drawn in through the intake portion.

[0062] The dehumidifier may further include: a fan disposed on the outlet side of the heat exchanger, which axially draws in air flowing through the heat exchanger and radially discharges it; and a fan shroud having a vortex portion extending arcuately around the outer peripheral surface of the fan to expand the flow path in the direction of rotation of the fan, and a discharge portion connected to the discharge portion.

[0063] The ejector portion can be configured as a circular ejector portion having a center C2 located on the center line lo in the left-right direction that bisects the top surface. Corresponding to the circular ejector portion, the ejector part can be configured as a circular ejector portion having centers C3 and C4 located on the center line lo. The circular ejector portion can be formed by combining a first ejector portion having a semi-circular shape based on center C3 and a second ejector portion having a semi-circular shape based on center C4.

[0064] The fan housing may include: a housing body having a mounting portion for the fan; and a throttling orifice forming an intake port for drawing air into the fan, wherein the housing body and the throttling orifice may be joined by a fastening mechanism.

[0065] The fastening mechanism may include: a cover fastening part disposed around the periphery of the vortex part; and a throttling orifice fastening part disposed around the periphery of the throttling orifice and connected to the cover fastening part.

[0066] The cover fastening part and the throttling hole fastening part can be provided in multiples at intervals along the circumferential direction.

[0067] A portion of the vortex portion is located between the cover fastening portion and the first discharge portion, and may include a connecting wall that extends arcuately between the throttling orifice fastening portion and the second discharge portion and abuts against a portion of the vortex portion.

[0068] The cover body can form the first discharge portion, and the throttling orifice can form the second discharge portion.

[0069] The mating surface between the cover body and the throttling orifice can be located on the centerline lo.

[0070] The center C2 of the circular ejection portion and the centers C3 and C4 of the circular ejection portion can be the same.

[0071] The ejection portion and the ejection section can be combined with substantially the same width, thereby enabling the concentrated ejection of air.

[0072] The first curved portion of the outer peripheral surface of the ejector portion, which is closest to the side portion of the body, can be formed to have a curvature corresponding to the second curved portion of the first side portion, and the curvature centers of the first curved portion and the second curved portion can be formed at the center C2 of the ejector portion.

[0073] The dehumidifier may also include a blade assembly attached to the discharge section, the blade assembly being supported at the upper end of the discharge section.

[0074] The area of ​​the ejector portion can be located only in the first region of the first region and the second region, which are divided based on the center line lc that divides the top surface into two equal parts.

[0075] In another view, the dehumidifier may include a fan housing having a vortex portion that extends arcuately around the outer peripheral surface of the fan to widen the flow path in the direction of rotation of the fan, and a discharge portion connected to the discharge portion.

[0076] The fan housing may include: a housing body having a mounting portion for the fan; and a throttling orifice forming an intake for drawing air into the fan and supporting a heat exchanger, wherein the housing body and the throttling orifice may have mating surfaces that are fastened to each other on the left-right centerline lo of the top surface.

[0077] The centerline lo can divide the ejection portion into two equal parts along the front-to-back direction.

[0078] The centerline lo can divide the ejected portion into two equal parts along the front-to-back direction.

[0079] The ejection section and the ejection portion have a circular shape to form a concentric circle.

[0080] Utility Model Effect

[0081] According to an embodiment of the present invention, the airflow emitted from the fan is concentrated, thereby increasing the airflow velocity and improving the emission performance.

[0082] According to an embodiment of the present invention, since the ejector portion is circular or elliptical in shape with the distance from the center of the ejector portion to the edge of the ejector portion being the same or similar, the dead zone in the ejector portion can be reduced.

[0083] According to an embodiment of the present invention, by directly connecting the discharge part of the dehumidifier to the discharge part of the fan cover, the resistance to the discharge flow can be reduced and the airflow from the fan can be increased.

[0084] According to an embodiment of the present invention, by constructing a circular discharge portion corresponding to the circular discharge portion, the bending of the discharge flow path or the change of the flow path area can be reduced, thereby improving the flow performance.

[0085] According to an embodiment of the present invention, by positioning the center of the discharge section on the centerline of the dehumidifier, flow loss and noise generation caused by the phenomenon of airflow deviating to one side of the dehumidifier can be reduced.

[0086] According to an embodiment of the present invention, by making the center of the discharge portion of the fan cover connected to the discharge portion also located on the center line of the dehumidifier, the flow discharged from the discharge portion can be quickly discharged through the discharge portion without loss.

[0087] According to an embodiment of the present invention, by fastening the body of the fan housing and the throttling hole along the center line of the dehumidifier, the weight balance of the dehumidifier can be stabilized.

[0088] According to an embodiment of the present invention, by placing the fastening area of ​​the cover body and the throttling orifice on the center line of the discharge portion, it is easy to ensure the flow path space of the fan installed on the cover body and the installation space of the heat exchanger supported by the throttling orifice.

[0089] In particular, when the fastening area is biased towards the intake of the fan housing, the space of the heat exchanger supported by the throttling orifice becomes narrower, which may lead to a problem of larger product size, but this embodiment can solve this problem.

[0090] Furthermore, if the fastening area is biased to the opposite side of the fan housing's intake, the space for installing the fan, i.e., the flow space, will be narrowed, which may lead to a decrease in airflow performance. However, this embodiment can solve this problem.

[0091] According to embodiments of the present invention, the composition and configuration of the fan and fan housing can be improved, thereby reducing flow resistance and noise generated by the flow resistance.

[0092] According to an embodiment of the present invention, by placing the heat exchanger closer to the exhaust side flow path of the fan housing and arranging the center of the exhaust portion and the center of the exhaust side flow path adjacent to each other, the heat exchange performance and flow performance of the air can be improved.

[0093] According to an embodiment of the present invention, by configuring the vortex portion to expand the fan flow path in the circumferential direction and positioning the center of the cut portion between the center of the fan and the center of the discharge portion, it is possible to prevent the air discharged from the fan from being re-inhaled.

[0094] According to an embodiment of the present invention, since the cut protrudes from the inner surface of the cover body toward the center of the discharge portion, the flow performance can be improved.

[0095] According to an embodiment of the present invention, by providing a cutout having multiple portions extending with different curvatures or directions, the boundary between the intake side and the exhaust side of the fan can be clearly distinguished.

[0096] According to an embodiment of the present invention, a funnel-shaped chamfered portion is provided on the exhaust side of the fan housing, thereby expanding the airflow path from the fan.

[0097] According to an embodiment of the present invention, guide ribs are provided on the intake side of the fan cover to prevent air flowing through the fan from being re-inhaled into the fan during the exhaust process.

[0098] According to an embodiment of the present invention, by providing a vortex portion that can expand the fan flow path based on the cut-out portion, the circular discharge portion and the discharge portion of the fan cover can be easily combined in corresponding shapes. Attached Figure Description

[0099] Figure 1 This is a front perspective view of a dehumidifier according to an embodiment of the present invention.

[0100] Figure 2 This is a rear perspective view of a dehumidifier according to an embodiment of the present invention.

[0101] Figure 3 This is a front perspective view of a dehumidifier according to an embodiment of the present invention.

[0102] Figure 4 This is a top perspective view of a dehumidifier according to an embodiment of the present invention.

[0103] Figure 5 This is an exploded perspective view of a dehumidifier according to an embodiment of the present invention.

[0104] Figure 6 This is a perspective view of a fan assembly according to an embodiment of the present invention.

[0105] Figure 7 This is a front view of a fan assembly according to an embodiment of the present invention.

[0106] Figure 8 This is a side view of a fan assembly according to an embodiment of the present invention.

[0107] Figure 9 This is a top view of a dehumidifier showing the relative positions of the fan, heat exchanger, and discharge section according to an embodiment of the present invention.

[0108] Figure 10 This is a top view of a fan assembly according to an embodiment of the present invention.

[0109] Figure 11 This is an exploded perspective view of the fan cover according to an embodiment of the present invention.

[0110] Figure 12 This is an exploded plan view of the fan and fan housing according to an embodiment of the present invention.

[0111] Figure 13This is a front view of the cover body according to an embodiment of the present utility model.

[0112] Figure 14 This is a diagram showing the partial configuration of the fan housing and fan according to an embodiment of the present invention.

[0113] Figure 15 This is a diagram showing a fan arranged inside the cover body according to an embodiment of the present invention.

[0114] Figure 16 This is a diagram showing the back side configuration of the throttling orifice according to an embodiment of the present invention.

[0115] Figure 17 It is along Figure 6 A sectional view taken along line 17-17.

[0116] Figure 18 This is a diagram showing the configuration of the vortex portion and the cutout portion of the fan housing according to an embodiment of the present invention.

[0117] Figure 19 It is along Figure 18 A sectional view taken along line 19-19.

[0118] Figure 20 It is along Figure 1 A sectional view taken along line 20-20.

[0119] Figure 21 It is along Figure 1 A sectional view taken along line 21-21. Detailed Implementation

[0120] Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that when adding reference numerals to the constituent elements of the various drawings, even if the same constituent elements are shown in different drawings, they should be labeled as similarly as possible. Furthermore, when describing embodiments of the present invention, detailed descriptions will be omitted if it is determined that a specific description of a known configuration or function might hinder the understanding of the embodiments of the present invention.

[0121] Furthermore, when describing the constituent elements of embodiments of this utility model, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the constituent elements from other constituent elements, and the nature, order, or sequence of the constituent elements are not limited by these terms. It should be understood that if any constituent element is described as being "connected," "combined," or "coupled" to another constituent element, then although the constituent element may be directly connected or coupled to another constituent element, each constituent element may also be "connected," "combined," or "coupled" to yet another constituent element.

[0122] Figure 1 This is a front perspective view of a dehumidifier according to an embodiment of the present invention. Figure 2 This is a rear perspective view showing a dehumidifier according to an embodiment of the present invention. Figure 3 This is a front perspective view of a dehumidifier according to an embodiment of the present invention. Figure 4 This is a top perspective view of a dehumidifier according to an embodiment of the present invention.

[0123] Reference Figures 1 to 4 According to an embodiment of the present invention, the dehumidifier 10 may have a slender shape with a relatively thin thickness along the front-to-back direction.

[0124] The dehumidifier 10 may have a three-dimensional shape and may have a first directional length L1, a second directional length L2, and a third directional length L3. The directions are defined below.

[0125] The first direction is the direction in which the water tank 130, compressor 161, and electrical device 170 are arranged, as described later, and can correspond to the left-right direction (x-axis direction) of the dehumidifier. Furthermore, the first direction can be understood as the direction from the first side portion 103 to the second side portion 104, as described later.

[0126] The second direction is the direction in which the air flowing through the fan 230 is discharged through the exhaust section 140, which can correspond to the vertical direction (y-axis direction) of the dehumidifier.

[0127] The third direction refers to the arrangement of the suction unit 112, heat exchanger 180, and fan 230, which can correspond to the front-to-back direction (z-axis direction) of the dehumidifier.

[0128] For example, when defining the first direction length L1, the second direction length L2, and the third direction length L3 of the dehumidifier 10, the second direction length L2 can be greater than the first direction length L1, and the first direction length L1 can be greater than the third direction length L3.

[0129] The dehumidifier 10 may include a body 100, which forms an exterior and houses a plurality of components for discharging dehumidified air. The body 100 may include a first housing 110 and a second housing 120.

[0130] The outer surface of the body 100 can be defined by the first housing 110 and the second housing 120. Specifically, the body 100 may include a front portion 101, a back portion 102, a first side portion 103, a second side portion 104, a top portion 105, and a bottom portion 106.

[0131] The first housing 110 is disposed on the upper side of the second housing 120, and the first housing 110 and the second housing 120 can be joined together. A fastening mechanism 115 can be provided at the joint surface of the first housing 110 and the second housing 120. For example, the fastening mechanism 115 may include a bracket and a fastening member.

[0132] Inside the first housing 110, a fan assembly 200 for generating airflow and a heat exchanger 180 for heat exchange of air can be configured.

[0133] A compressor 161, a water tank 130, and an electrical device 170 may be configured inside the housing 120.

[0134] The first housing 110 and the second housing 120 are configured such that the left and right ends extend in an arc shape with a predetermined curvature, and the aesthetics can be improved by forming smooth surfaces. That is, the first side portion 103 and the second side portion 104 may include smooth, arc-shaped curved surfaces.

[0135] The curvature of the portion forming the top portion 105 in the first side portion 103 can be configured to correspond to the curvature of the ejection portion 140, which will be described later.

[0136] The dehumidifier 10 may include a water tank 130 for storing water condensed in the air. The water tank 130 may be detachably disposed at the lower part of the dehumidifier 10. For example, the water tank 130 may be detachably disposed in the second housing 120.

[0137] The water tank 130 can be separated to the side of the dehumidifier 10. Since the water tank 130 is located at the bottom of the dehumidifier, the weight stability of the dehumidifier is improved, and the risk of water stored in the dehumidifier flowing into the internal components of the dehumidifier is reduced.

[0138] When the dehumidifier is in operation, outside air is drawn in from the rear portion 102 of the dehumidifier 10 and discharged through the top portion 105. The rear portion 102 has an intake portion 112 for air intake, and the top portion 105 may have an exhaust portion 140.

[0139] The inhalation portion 112 is formed on the back surface portion 102 of the first housing 110, and the exhalation portion 140 can be formed by opening a portion of the top surface portion 105 of the first housing 110.

[0140] The discharge section 140 can guide the air flowing through the fan 230 to be discharged upwards from the dehumidifier. The discharge section 140 can be configured to have a width substantially the same as the maximum width of the discharge side flow path of the fan 230.

[0141] For example, the ejection portion 140 may include a circular ejection portion with the width as its diameter.

[0142] The side edge of the top surface 105 includes an arc-shaped curved portion, and a portion of the outer peripheral surface of the circular ejector portion can form a curvature corresponding to the side edge of the top surface 105.

[0143] The center of curvature of a portion of the outer peripheral surface of the circular ejector can be formed to be the same as the center of curvature of the side edge of the top surface 105. According to this configuration, a portion of the outer peripheral surface of the circular ejector can extend parallel to the side edge of the top surface 105.

[0144] The dispensing portion 140 may be formed at a position offset to one side relative to the center in the left-right direction of the top surface portion 105. For example, the dispensing portion 140 may be formed closer to the first side surface portion 103 in the first side surface portion 103 and the second side surface portion 104.

[0145] The discharge section 140 may be equipped with discharge blades 145 for adjusting the direction of the discharged airflow. The discharge blades 145 may be movable or rotatable.

[0146] The interior of the body 100 may be configured with a flow section and a drive section. The flow section includes components for generating airflow and performing heat exchange, and the drive section includes the main drive components and processing components required for the operation of the dehumidifier.

[0147] The flow section and the drive section can be configured vertically. For example, the flow section can be configured above the drive section, and an internal frame 150 can be configured between the flow section and the drive section to separate them.

[0148] The flow section may include a heat exchanger 180 disposed inside the intake section 112 and a fan assembly 200 disposed in front of the heat exchanger 180 and drawing in air flowing through the heat exchanger 180.

[0149] The heat exchanger 180 may include an evaporator 181 and a condenser 183. The evaporator 181 and the condenser 183 may be arranged side by side along the direction of airflow, i.e., in the front-to-back direction.

[0150] The heat exchanger 180 may also include a pipe section 185 disposed on the side of the evaporator 181 and the condenser 183 to guide the flow of refrigerant into and out of the evaporator 181 and the condenser 183.

[0151] The evaporator 181 can be disposed between the intake section 112 and the condenser 183, so that the air drawn in through the intake section 112 is first cooled by flowing through the evaporator 181 and then heated by flowing through the condenser 183.

[0152] If the air is cooled as it flows through the evaporator 181, the moisture in the air is condensed to form condensate, thereby dehumidifying the air. The condensate can be stored in a water tank 130.

[0153] The dehumidified air can be heated as it flows through the condenser 183 and then drawn into the fan assembly 200. The air flowing through the fan assembly 200 can be discharged through the exhaust portion 140 located at the upper end of the fan assembly 200.

[0154] The drive unit may include a water tank 130 for storing condensate generated in the evaporator 181. For example, the water tank 130 may be configured to protrude toward a second side portion 104 of the body 100. A user can pull the water tank 130 out from the side of the second side portion 104.

[0155] The drive section may further include a compressor 161, which compresses refrigerant to operate a refrigeration cycle. The refrigerant compressed in the compressor 161 flows into the condenser 183 through the conduit 185.

[0156] The pipe section 185 is connected to the outlet port of the compressor 161 and can be connected to the condenser 183 by passing through or around the internal frame 150.

[0157] The drive section may also include an electrical device 170 having electrical components of a dehumidifier.

[0158] The water tank 130, the compressor 161, and the electrical device 170 can be arranged in a left-right direction, for example, they can be arranged from the second side portion 104 toward the first side portion 103.

[0159] The internal frame 150 may include a partition 151 that divides the internal space of the body 100 vertically to separate the flow portion and the drive portion.

[0160] The internal frame 150 may also include a plurality of partition walls 153, 155 extending from the partition plate 151 toward the drive portion and separating the receiving space of the components of the drive portion.

[0161] The plurality of partition walls 153, 155 may include a first partition wall 153, which defines the receiving space of the water bucket 130. The first partition wall 153 extends downward from the partition plate 151 and is supported by the bottom surface 106. The body 100, the first partition wall 153, and the partition plate 151 define the receiving space of the water bucket 130.

[0162] The plurality of partition walls 153, 155 may further include a second partition wall 155 for defining a receiving space for the compressor 161 and the electrical device 170. The second partition wall 155 may extend downward from the partition plate 151 and be supported by a bottom surface 106. The second partition wall 155 may be configured to be laterally spaced from the first partition wall 153.

[0163] The first partition wall 153, the second partition wall 155, and the partition plate 151 define the accommodating space of the water bucket 130. Additionally, the main body 100, the second partition wall 155, and the partition plate 151 define the accommodating space of the electrical device 170.

[0164] Reference Figure 4 When viewed from above, the exhaust section 140 can be tilted to one side from the center C1 of the top surface 105.

[0165] Specifically, when a center line lc is defined that extends from the left-right center C1 to the front-back direction, the center line lc can divide the top surface 105 into a first region where the ejection portion 140 is located and a second region on the opposite side.

[0166] That is, the dispensing portion 140 can be formed in a first region defined on both sides of a first region and a second region relative to the center of the top surface portion 105. The dispensing portion 140 can be located adjacent to the side edge of the top surface portion 105, and the two ends of the dispensing portion 140 can be located in the first region.

[0167] On the other hand, the center line l3' in the vertical direction passing through the center of the fan 230 (refer to...) Figure 20 It can pass through the second region.

[0168] The center of the discharge section 140 is off-center relative to the center of the fan 230, and the vertical centerline lc' passes through the center of the heat exchanger 180 or the center of the dehumidifier (refer to...). Figure 20 It can be located on the centerline l1' in the vertical direction passing through the center of the ejector section 140 (refer to...). Figure 20 Between the center line in the vertical direction passing through the center of the fan.

[0169] The fan housing 201 includes a cutout 215 that forms the boundary between the intake and exhaust sides of the fan 230, and a centerline l5 (refer to) passing through the center of the cutout 215 in the vertical direction. Figure 20 It can pass through the first region of the top surface 105.

[0170] The entire area of ​​the ejection portion 140 can be formed to be closer to the first side portion 103 than the second side portion 104.

[0171] The first curved portion 140a, which is closest to the first side portion 103 on the outer peripheral surface of the ejection portion 140, can be formed to have a curvature corresponding to the second curved portion 103a of the first side portion 103, and the first curved portion and the second curved portion can have the same curvature center.

[0172] The dispensing portion 140 may have a circular shape. When a left-right center line lo is defined that passes through the center of the dispensing portion 140 and bisects the dispensing portion 140 in the front-back direction, the left-right center line lo can bisect the top portion 105 in the front-back direction.

[0173] That is, the left-right center line lo can bisect the ejection part 140 in the front-back direction and the top part 105 in the front-back direction.

[0174] The left-right centerline lo can pass through the center C2 of the ejector 140 in the left-right direction.

[0175] The discharge section 140 is movably provided with a plurality of discharge blades 145, which can be connected by blade connecting rods 144 extending in the left-right direction. The blade connecting rods 144 can be located on the center line lo in the left-right direction.

[0176] By moving the blade connecting rod 144 in the left and right direction, the plurality of ejector blades 145 rotate together, thereby selectively opening and closing the ejector section 140. For example, the plurality of ejector blades 145 can be operated manually.

[0177] Inside the main body 100, a fan shroud 201 can be configured to form the airflow path of the fan 230. The fan shroud 201 can be understood as a "vortex shroud" that expands the airflow path along the rotation direction of the fan 230.

[0178] The fan housing 201 may include a housing body 210 for housing the fan 230 and a throttling orifice 220 connected to the housing body 210 and drawing in air flowing through the heat exchanger 180.

[0179] The throttling orifice 220 may include an upper support plate 228 located at the upper end of the heat exchanger 180.

[0180] The fan housing 201 may include a joint portion 202 that defines the interface between the housing body 210 and the throttling orifice 220, and the housing body 210 and the throttling orifice 220 may be in surface contact through the joint portion 202.

[0181] The joint 202 can form a joint surface.

[0182] The contact surfaces of the cover body 210 and the throttling orifice 220 can be located on the left-right centerline lo.

[0183] Specifically, the cover body 210 and the throttling orifice 220 can be connected to each other through the first fastening mechanisms 271 and 281. The first fastening mechanisms 271 and 281 may include a first cover fastening part 271 provided on the cover body 210 and a first throttling orifice fastening part 281 provided on the throttling orifice 220.

[0184] The first cover fastening part 271 and the first throttle hole fastening part 281 are fastened by fastening member 290 (see reference). Figure 11 The fastening surfaces of the first cover fastening part 271 and the first throttling hole fastening part 281 can form the joint part 202.

[0185] With this configuration, the heat exchanger 180 and the fan 230 form a stable center of gravity in a position that is approximately symmetrical about the front and back of the dehumidifier, and facilitates the uniform discharge of air flowing through the fan 230 through the entire area of ​​the discharge section 140.

[0186] The throttling orifice 220 may include a connecting wall 260 disposed between the first fastening mechanisms 271, 281 and the discharge portion 140.

[0187] Figure 5 This is an exploded perspective view of a dehumidifier according to an embodiment of the present invention.

[0188] Reference Figure 5 The dehumidifier 10 according to this utility model may include a first housing 110 forming an intake portion 112 and an exhaust portion 140. The intake portion 112 is formed on the back side of the first housing 110, and the exhaust portion 140 may be formed on the top surface of the first housing 110.

[0189] The air drawn in through the intake section 112 can flow upward after passing through the heat exchanger 180 and the fan 230, and then be discharged through the exhaust section 140.

[0190] A blade assembly 142 can be installed in the discharge portion 140. The blade assembly 142 may have a disc shape so as to fit tightly into the inner circumferential surface of the discharge portion 140.

[0191] The blade assembly 142 may include an annular support edge 143 and a discharge blade 145 movably disposed inside the support edge 143. A blade connecting rod 144 movable in the left-right direction may be provided at the center of the discharge blade 145 to guide the movement of the discharge blade 145.

[0192] A flow section may be provided inside the first housing 110. The flow section may include a heat exchanger 180 disposed inside the suction section 112. The heat exchanger 180 may include an evaporator 181, a condenser 183 on the outlet side of the evaporator 181, and a pipe section 185 on the side of the evaporator 181 and the condenser 183.

[0193] The flow section may further include a fan assembly 200 disposed on the outlet side of the heat exchanger 180 and forming a fan flow path. The configuration of the fan assembly 200 will be described in detail later with reference to the accompanying drawings.

[0194] An internal frame 150 may be provided inside the body 100 to separate the flow section and the drive section vertically. The internal frame 150 may include a partition plate 151 that supports the heat exchanger 180 and the fan assembly 200.

[0195] The partition plate 151 may include a heat exchanger support portion 152a supporting the lower part of the heat exchanger 180 and a fan support portion 152b supporting the lower part of the fan assembly 200. The heat exchanger support portion 152a and the fan support portion 152b may be arranged in a front-back direction.

[0196] The heat exchanger support 152a may include a support bracket 152d that supports the bottom surface of the heat exchanger 180.

[0197] A drain port 152c for discharging condensate generated in the heat exchanger 180 can be formed in the heat exchanger support 152a (see reference). Figure 20 ).

[0198] The internal frame 150 may further include a first partition wall 153 extending downward from the partition plate 151 and a second partition wall 155 separated from the first partition wall 153 in a left-right direction.

[0199] A water tank accommodating space 157, where the water tank 130 is located, can be formed between the first partition wall 153 and the main body 100. The water tank accommodating space 157 can be formed to be adjacent to the second side surface 104.

[0200] An electrical accommodating space 158, where the electrical device 170 is located, can be formed between the second partition wall 155 and the main body 100. The electrical accommodating space 158 can be formed to be adjacent to the first side surface portion 103.

[0201] A compressor housing space 156, where the compressor 161 is located, can be formed between the first partition wall 153 and the second partition wall 155. The compressor housing space 156 can be formed between the water tank housing space 157 and the electrical housing space 158.

[0202] The interior of the second housing 120 can form a space 122 for accommodating the drive components, namely the water tank 130, the compressor 161, and the electrical device 170. As described above, the water tank 130, the compressor 161, and the electrical device 170 can be arranged in a left-right direction.

[0203] The portion of the second side surface 104 formed in the second housing 120 may form a housing opening 123 that opens to the side, so as to allow the water bucket 130 to be pulled out and inserted. The housing opening 123 may communicate with the water bucket receiving space 157.

[0204] The bottom surface of the second housing 120 may include a base 121 that supports the water tank 130, the compressor 161 and the electrical device 170.

[0205] The base 121 may include a first base portion supporting the water tank 130, a second base portion supporting the compressor 161, and a third base portion supporting the electrical device 170.

[0206] Figure 6 This is a perspective view of a fan assembly according to an embodiment of the present invention. Figure 7 This is a front view of a fan assembly according to an embodiment of the present invention. Figure 8 This is a side view of a fan assembly according to an embodiment of the present invention. Figure 9 This is a top view of a dehumidifier showing the relative positions of the fan, heat exchanger, and discharge section according to an embodiment of the present invention. Figure 10 This is a top view of a fan assembly according to an embodiment of the present invention. Figure 11 This is an exploded perspective view of the fan cover according to an embodiment of the present invention.

[0207] Reference Figures 6 to 11The fan assembly 200 according to this utility model may include a cover body 210 that houses a fan 230 and has an open rear end. The cover body 210 may include a fan mounting portion 211 for mounting the fan 230. In order for the fan 230 to rotate, the fan 230 may be disposed slightly spaced from the fan mounting portion 211.

[0208] The surface forming the fan mounting portion 211 can form the "bottom surface" of the cover body 210.

[0209] The fan mounting portion 211 may be provided approximately at its central part to support the fan motor 237 (see reference). Figure 19 The motor support portion 212 may have an annular shape that protrudes rearward from the fan mounting portion 211 and surrounds the outer periphery of the fan motor 237.

[0210] The cover body 210 may also include a vortex portion 213 extending along the circumferential direction of the fan to surround the outer peripheral surface of the fan 230.

[0211] The vortex portion 213 may include an inner circumferential surface that gradually moves away from the center of the fan 230 along the direction of fan rotation, thereby expanding the fan flow path 205 along the direction of fan rotation 230. For example, the vortex portion 213 may have a volute shape.

[0212] The cover body 210 may further include an outlet guide 214, which is connected to the fan mounting portion 211 and forms a downstream flow path 205b of the fan 230 in the fan flow path 205 (see reference). Figure 18 Since the downstream flow path 205b is connected to the discharge section 140, it can be named the "discharge side flow path".

[0213] The upstream flow path 205a and the downstream flow path 205b can be distinguished with the center of the fan 230 as a reference.

[0214] The discharge guide 214 can be connected to the discharge side portion of the vortex section 213. The discharge side portion of the vortex section 213 may include the portion of the fan flow path 205 that is maximized.

[0215] The discharge guide 214 can be configured to be recessed forward to increase the area of ​​the downstream flow path 205b. The area of ​​the downstream flow path 205b can be increased by increasing the size of the recess. By increasing the flow path area, a sufficient flow rate of air discharged to the discharge section 140 can be ensured.

[0216] The ejection guide 214 may include a curved portion that extends in an arc shape. The ejection guide 214 corresponds to the shape (circular) of the ejection portion 204 and may have a radius of curvature corresponding to the radius of curvature of the ejection portion 204.

[0217] The end of the ejection guide 214 may include a first ejection portion 216 connected to the ejection portion 140. The first ejection portion 216 may be formed at the end of the vortex portion 213.

[0218] The first ejection portion 216 may have a semi-circular shape.

[0219] The cover body 210 may further include a boundary portion 217 that defines the interface between the fan mounting portion 211 and the discharge guide portion 214. The boundary portion 217 may extend linearly along the vertical direction of the fan cover 201.

[0220] With the boundary portion 217 as a reference, the distance between the fan 230 and the discharge guide portion 214 can be made greater than the distance between the fan 230 and the fan mounting portion 211.

[0221] The cover body 210 may also include a cutout 215 that serves as the boundary between the expulsion and re-inhalation of airflow.

[0222] The cutout 215 may be formed at an angle relative to a centerline in the vertical direction passing through the center of the fan 230. The cutout 215 may define the starting point of the fan flow path 205. The distance between the cutout 215 and the fan 230 may correspond to the minimum width in the fan flow path 205.

[0223] The cutout 215 can be configured to span the starting portion of the vortex portion 213 and the portion formed by the boundary portion 217, with the rotation direction of the fan 230 as a reference.

[0224] For example, the cut portion 215 may include a first end portion 215a connected to the boundary portion 217 and a second end portion 215b connected to the starting portion of the vortex portion 213.

[0225] The first end portion 215a can be understood as the end portion closest to the ejection guide portion 214 in the inclined shape of the cut portion 215. The boundary portion 217 can extend downward from the end portion 215a as the starting point towards the fan cover 201.

[0226] The upper end of the ejection guide 214 may correspond to the upper end of the cut portion 215. A blade assembly 142 is installed on the upper end of the ejection guide 214, and the ejection blades 145 of the blade assembly 142 can open or close the ejection portion 140 by operation.

[0227] The cutout 215 may be configured to protrude sharply from the inner surface of the cover body 210 toward the fan 230. For example, the cutout 215 may protrude from the inner surface of the cover body 210 with a relatively small radius of curvature.

[0228] The radius of curvature of the cutout 215 can be formed to be smaller than the radius of curvature of the inner surface of the cover body 210 extending along the rotation direction of the fan 230.

[0229] In addition, the cutout 215 can be configured with the center of the fan 230 as a reference, biased towards the downstream flow path 205b from the upstream flow path 205a.

[0230] According to this configuration, the protruding cutout 215 can prevent air expelled from the fan 230, i.e., air flowing in the downstream flow path 205b, from being re-drawn into the intake side of the fan 230.

[0231] In particular, in the structure of this utility model that forms a circular discharge section 140 and circular discharge portions 216 and 226, there may be a problem that the fluid may be drawn back into the fan 230 along the curved surface of the smooth, arc-shaped discharge side portion, thereby increasing the flow resistance.

[0232] However, these problems can be prevented by configuring the cutout 215 to be biased toward the exhaust side flow path with reference to the center of the fan 230 and to protrude sharply from the inner surface of the cover body 210.

[0233] The fan assembly 200 may further include a throttling orifice 220 covering a portion of the open end of the shroud body 210. The throttling orifice 220 may be attached to the front of the shroud body 210.

[0234] The orifice 220 may include an orifice body 221 that forms an intake port 223 for drawing in air flowing through the heat exchanger 180. The intake port 223 may be formed on one axial side of the fan 230 and may be generally circular in shape.

[0235] The throttling orifice 220 may include a second discharge portion 226 disposed at the upper end of the throttling orifice body 221 and cooperating with the first discharge portion 216 of the cover body 210. The second discharge portion 226 may be semi-circular.

[0236] If the first ejection portion 216 and the second ejection portion 226 are assembled, an ejection portion having a shape (circular) corresponding to the ejection portion 140 can be formed.

[0237] The blade assembly 142 can be installed on the part where the first ejection portion 216 and the second ejection portion 226 are assembled. The blade assembly 142 can be placed on the upper end of the first ejection portion 216 and the second ejection portion 226.

[0238] The throttling orifice 220 may have an upper support plate 228 disposed above the suction port 223 and supporting the upper end of the heat exchanger 180. The heat exchanger 180 may be disposed in the space between the upper support plate 228 and the partition plate 151.

[0239] The upper support plate 228 can be positioned corresponding to a portion of the downstream flow path 205b through which the air flowing through the fan 230 is discharged toward the discharge section 140. Alternatively, the upper support plate 228 can be positioned corresponding to the cutout 215.

[0240] The throttling orifice 220 is disposed on both sides of the suction port 223, and side support plates 229a and 229b supporting the left and right ends of the heat exchanger 180 can be provided. The side support plates 229a and 229b may include a first side support plate 229a disposed on the left side of the suction port 223 and a second side support plate 229b disposed on the right side of the suction port 223.

[0241] The heat exchanger 180 can be configured within the space defined by the upper support plate 228, the first side support plate 229a, and the second side support plate 229b. The heat exchanger 180 is stably supported in front of the suction port 223 by the support plates 228, 229a, and 229b.

[0242] The distance between the first side support plate 229a and the second side support plate 229b can be made larger than the diameter of the suction port 223. Therefore, the heat exchanger 180 disposed between the first side support plate 229a and the second side support plate 229b can be configured to cover the suction port 223.

[0243] The throttling orifice 220 may also include a chamfer portion 227 that expands from the upper support plate 228 toward the second discharge portion 226 in the direction of increasing air discharge area.

[0244] The chamfered portion 227 may have an upwardly enlarging flow path cross-sectional area so that the air discharged through the downstream flow path 205b can expand and be discharged to the discharge portion 140.

[0245] For example, the chamfered portion 227 may be configured to expand in a funnel shape from the lower end of the chamfered portion 227 upwards.

[0246] Specifically, the chamfered portion 227 may include a lower chamfered end portion 227a that defines the minimum cross-sectional area of ​​the internal flow path of the chamfered portion 227 and an upper chamfered end portion 227b that defines the maximum cross-sectional area of ​​the internal flow path of the chamfered portion 227.

[0247] The chamfered portion 227 can be tilted at a first angle α1 from the lower end 227a toward the upper end 227b relative to the vertical reference line and extend therefrom.

[0248] The chamfered portion 227 can be configured to expand from the upper support plate 228 toward the second discharge portion 226 to increase the flow path cross-sectional area.

[0249] For this purpose, the lower chamfered end 227a of the chamfered portion 227 is formed at a position corresponding to the upper support plate 228, for example, it can be connected to the upper support plate 228.

[0250] The chamfered upper end portion 227b of the chamfered portion 227 can be connected to the second discharge portion 226. That is, the flow path cross-sectional area in the chamfered upper end portion 227 can correspond to the flow path cross-sectional area of ​​the second discharge portion 226. With this configuration, it has the advantage of increasing the discharge area of ​​the discharged air.

[0251] The fan assembly 200 may also include a fan 230 disposed in the space defined by the housing body 210 and the throttle orifice 220.

[0252] The fan 230 may include a centrifugal fan that draws in air axially and discharges it radially. For example, the centrifugal fan may include a multi-bladed fan.

[0253] The fan 230 may include a mainboard 231 attached to the motor shaft of the fan motor 237. For example, the mainboard 231 may be disc-shaped.

[0254] The fan 230 may be disposed at approximately the center of the motherboard 231 and may include a hub 232 that provides rotational force to the fan 230. The hub 232 may include a shaft engagement portion 232a that is coupled to the motor shaft.

[0255] The hub 232 may protrude from the center of the main board 231 toward the intake port 223. The motor shaft may pass through the protruding portion of the hub 232 and be coupled to the fan motor 237.

[0256] The fan 230 may include an edge 233 spaced axially from the motherboard 231 and a plurality of blades 234 connecting the spaced portions of the motherboard 231 and the edge 233.

[0257] The edge 233 can be annular. The edge 233 can be parallel to the motherboard.

[0258] The plurality of blades 234 may be configured to have a length extending along the motor shaft in the front-to-back direction. The plurality of blades 124 may be configured to be arranged in a circumferential direction.

[0259] Reference Figure 9 When viewed from above the dehumidifier 10, the heat exchanger 180 and the fan 230 can be arranged in the front-to-back direction, and the discharge section 140 can be arranged to the side of the heat exchanger 180 and the fan 230.

[0260] A first center line l1 passing through the center of the heat exchanger 180 or the top surface 105 in a front-back direction, a second center line l1 passing through the center of the discharge section 140 in a front-back direction, and a third center line l3 passing through the center of the fan 230 in a front-back direction can be defined.

[0261] The first center line l1, the second center line l1, and the third center line l3 may be offset from each other. The third center line l3 may be separated from the first center line l1 by a first distance S1 in the direction toward the second side portion 104, and the second center line l1 may be separated from the first center line l1 by a second distance S2 in the direction toward the first side portion 103.

[0262] The first center line l1 can be located between the third center line l3 and the second center line l1.

[0263] The center C2 of the discharge section 140 can be located closer to the first side portion 103 than the outermost end 230a of the fan 230, so that the air discharged from the fan 230 along the vortex portion 213 can flow a short distance to the discharge section 140 and be discharged in a concentrated manner.

[0264] That is, the distance from the center C2 of the discharge portion 140 to the first side portion 103 can be less than the distance from the outermost end 230a of the fan 230 to the first side portion 103.

[0265] The ejector portion 104 of the blade assembly 142 can be formed adjacent to the first side portion 103.

[0266] Specifically, the first curved portion 140a closest to the first side surface 103 on the outer peripheral surface of the dispensing portion 140 can be formed to have a curvature corresponding to the second curved portion 103a of the first side surface 103, and the first and second curved portions can have the same center of curvature. Furthermore, the center of curvature can form the center C2 of the dispensing portion 140.

[0267] Reference Figure 10 When viewed from above, the circular discharge portions 216 and 226 and the fan 230 can be defined as a second center line l1 passing through the center of the circular discharge portions 216 and 226 in the front-back direction and a fourth center line l2 passing through the side end of the fan 230 in the front-back direction.

[0268] The circular ejection portions 216 and 226 can be formed by combining the first ejection portion 216 and the second ejection portion 226. The first ejection portion 216 and the second ejection portion 226 can each be semi-circular.

[0269] C3 can be formed at the center of the first protruding part 216 of the semicircle (see reference). Figure 12 The center of the semi-circular second ejection portion 226 can form C4 (see reference). Figure 12 The centers C3 and C4 are formed at the same location and may coincide with the center C2 of the discharge section 140.

[0270] The second center line l1 can pass through the center of the ejector section 140 in the front-back direction.

[0271] The side end of the fan 230 can be understood as the end closest to the downstream flow path 205b. Furthermore, the second center line l1 can be the same as the extension line passing through the center of the discharge section 140 in the front-rear direction.

[0272] The second center line l1 and the fourth center line l2 can be separated by a first distance S1 in the left-right direction. Furthermore, the fourth center line l2 can be positioned between the second center line l1 and the center line that passes through the center of the fan 230 in the front-back direction.

[0273] The cutout portion 215 can be configured at an angle relative to the fourth centerline l2. Specifically, the cutout portion 215 can be configured at an angle from the first end portion 215a connected to the boundary portion 217 toward the second end portion 215b that defines the starting point of the suction side of the fan 230.

[0274] The cut portion 215 can extend along the cut reference line lf. The cut reference line lf and the fourth center line l2 can be formed in directions that intersect each other. Furthermore, the cut reference line lf and the second center line l1 can be formed in directions that intersect each other.

[0275] In addition, the cutout 215, by protruding sharply from the inner surface of the cover body 210 toward the direction of the fan 230, can prevent air from flowing (re-inhaling) from the boundary portion 217 toward the intake side 230 of the fan 230.

[0276] Figure 12 This is an exploded plan view of the fan and fan housing according to an embodiment of the present invention. Figure 13 This is a front view of the cover body according to an embodiment of the present utility model.

[0277] Reference Figure 7 , Figure 12 as well as Figure 13 The fan housing according to the present invention may include a housing body 210 having a mounting portion for a fan 230 and a throttling orifice 220 forming an intake port.

[0278] A heat exchanger 180 may be configured upstream of the intake port, with reference to airflow. The throttling orifice 220 may include support plates 228, 229a, and 229b for supporting the heat exchanger 180.

[0279] The upper end of the cover body 210 may form a first discharge portion 216, which may be arc-shaped with respect to the center C3. For example, the first discharge portion 216 may be semi-circular.

[0280] The upper end of the throttling orifice 220 forms a second discharge portion 226, which may be arc-shaped with respect to the center C4. For example, the second discharge portion 226 may be semi-circular.

[0281] The first ejection portion 216 and the second ejection portion 226 may have the same shape. The first ejection portion 216 and the second ejection portion 226 may have the same size.

[0282] The motor of the fan 230 can be installed in the cover body 210, and a wire bracket 219 for supporting the wires connected to the motor can be provided on the front side of the cover body 210.

[0283] With the fan 230 installed inside the fan housing, the housing body 210 and the throttling orifice 220 can be fastened.

[0284] The dehumidifier 10 may also include a fastening mechanism that combines the cover body 210 and the throttling orifice 220.

[0285] The fastening mechanism can be configured along the periphery of the cover body 210 and the throttling orifice 220.

[0286] Specifically, the fastening mechanism may include first fastening mechanisms 271 and 281 located on the sides of the discharge portions 216 and 226. The first fastening mechanisms 271 and 281 may include a first cover fastening part 271 disposed on the cover body 210 and a first throttling hole fastening part 281 disposed on the throttling hole 220.

[0287] The first cover fastening part 271 may include a fastening bracket protruding outward from the outer periphery of the vortex part 213. A fastening hole 271a may be formed in the first cover fastening part 271.

[0288] The first throttling orifice fastening portion 281 may include a fastening bracket protruding from the upper end of the throttling orifice body 221. A fastening hole 281a may be formed in the first throttling orifice fastening portion 281.

[0289] The first cover fastening part 271 and the first throttling hole fastening part 281 can be aligned to cooperate with each other, and the fastening member 290 can be fastened to the fastening holes 271a and 281a.

[0290] The first cover fastening part 271 and the first throttling hole fastening part 281 can be located at a position that is laterally separated from the discharge parts 216 and 226.

[0291] A portion 213a of the vortex section 213 may be located between the first cover fastening portion 271 and the first discharge portion 216. That is, the portion 213a extends to have a predetermined curvature and surrounds a portion of the outer peripheral surface of the fan 230.

[0292] The connecting wall 260 can be disposed between the first throttling orifice fastening part 281 and the second discharge part 226. That is, one end of the connecting wall 260 is connected to the second discharge part 226, and the other end of the connecting wall 260 is connected to the first throttling orifice fastening part 281.

[0293] The connecting wall 260 can extend in an arc shape.

[0294] The connecting wall 260 is a portion that abuts against a portion 213a of the vortex section 213, and may include a portion having a curvature (set curvature) corresponding to the curvature of the portion 213a.

[0295] For example, the upper end of the connecting wall 260 may extend in an arc shape with the set curvature.

[0296] The fastening mechanism may also include an additional fastening mechanism.

[0297] The additional fastening mechanism may include a second cover fastening part 272 located at a second location in the vortex part 213 and a second throttling hole fastening part 282 located at a second location in the throttling hole body 211.

[0298] The second cover fastening portion 272 may include a fastening bracket protruding outward from the outer periphery of the vortex portion 213. A fastening hole 272a may be formed in the second cover fastening portion 272.

[0299] The second throttling orifice fastening part 282 may include a fastening bracket protruding outward from the outer periphery of the throttling orifice body 221. The second throttling orifice fastening part 282 may be connected to the first side support plate 229a.

[0300] A fastening hole 282a may be formed in the second throttling orifice fastening part 282.

[0301] The second cover fastening part 272 and the second throttling hole fastening part 282 can be aligned to cooperate with each other, and the fastening member 290 can be fastened to the fastening holes 272a and 282a.

[0302] The additional fastening mechanism may include a third cover fastening part 273 located at a third location in the vortex part 213 and a third throttling hole fastening part 283 located at a third location in the throttling hole body 211.

[0303] The third cover fastening part 273 may include a fastening bracket protruding outward from the outer periphery of the vortex part 213. A fastening hole 273a may be formed in the third cover fastening part 273.

[0304] The third throttling orifice fastening part 283 may include a fastening bracket protruding from the outer peripheral surface of the throttling orifice body 221. The third throttling orifice fastening part 283 may be connected to the second side support plate 229b.

[0305] A fastening hole 283a may be formed in the third throttling hole fastening part 283.

[0306] The third cover fastening part 273 and the third throttling hole fastening part 283 can be aligned to cooperate with each other, and the fastening member 290 can be fastened to the fastening holes 273a and 283a.

[0307] The first to third cover fastening parts 271, 272, and 273 can be spaced apart from each other along the outer peripheral surface of the vortex part 213 and arranged in a circumferential direction.

[0308] The first to third throttling orifice fastening parts 281, 282, and 283 can be spaced apart from each other along the outer peripheral surface of the throttling orifice body 221 and arranged in a circumferential direction.

[0309] Figure 13 This is a front view showing the partial configuration of the fan housing and fan according to an embodiment of the present invention. Figure 14 This is a diagram showing a fan arranged inside the cover body according to an embodiment of the present invention.

[0310] Reference Figure 13 as well as Figure 14 According to an embodiment of the present invention, a fan flow path 205 can be formed between the inner surface 210a of the cover body 210 and the outer peripheral surface of the fan 230.

[0311] The cover body 210 may include a vortex section 213 to allow air drawn into the fan 230 to flow while expanding its flow path along the rotation direction of the fan 230. The vortex section 213 may form the outer peripheral surface of the cover body 210.

[0312] The starting point of the vortex section 213 can be understood as the point where the distance between the vortex section 213 and the fan 230 is the shortest. The cutout section 215 can be set at the starting point of the vortex section 213 to prevent air flowing toward the discharge section 140 from being drawn back into the fan 230.

[0313] The cutout 215 may be configured to protrude from the inner surface 210a of the cover body 210, that is, from the inner surface corresponding to the starting point of the vortex portion 213.

[0314] The cutout 215 may have a three-dimensional shape extending in a direction close to the fan 230, in a direction close to the discharge guide 214 of the cover body 210, and in a direction close to the first discharge portion 216.

[0315] Specifically, the cutout portion 215 may include a first end portion 215a connected to the boundary portion 217 and a second end portion 215b having the shortest distance from the outer peripheral surface of the fan 230. The second end portion 215b may form the most protruding part of the protruding shape of the cutout portion 215.

[0316] Therefore, the second end portion 215b can form a cut portion 215 with the maximum thickness Wc protruding most from the inner surface 210a of the cover body 210. Additionally, the cut portion 215 can have a shape that thins towards both sides of the second end portion 215b.

[0317] The cutout 215 may include a flow guide portion extending from the first end 215a to the second end 215b.

[0318] The flow guiding portion may include a first curved surface 215c forming a front end portion (the first contact portion) based on the flow direction of the air discharged toward the discharge portions 216, 226. The first curved surface 215c may define the portion where the air begins to expand based on the rotation direction of the fan 230.

[0319] The flow guiding portion may further include a straight portion 215d extending linearly from the first curved portion 215c toward the discharge portions 216, 226. The straight portion 215d may perform a guiding function, causing the discharged air to flow upward toward the discharge portion 140 without being drawn into the first curved portion 215c.

[0320] The flow guiding portion may include a second curved portion 215e extending arcuately from the straight portion 215d in the direction of air discharge. The second curved portion 215e may be connected to the first discharge portion 216. The second curved portion 215e may smoothly connect the first discharge portion 216 and the cut-out portion 215 to perform the function of reducing flow resistance.

[0321] The radius of curvature of the first curved surface 215c and the radius of curvature of the second curved surface 215e can be formed differently.

[0322] The cover body 210 may include an exhaust guide 214 that extends in an arc shape along the direction of increasing the flow path cross-sectional area in the exhaust portions 216 and 226. The exhaust guide 214 can be distinguished from the fan mounting portion 211 by the boundary portion 217.

[0323] The fan mounting section 211 may have a flat plate shape for mounting the fan 230.

[0324] On the other hand, the discharge guide 214 is disposed in the downstream flow path 205b and has a concave shape in the direction away from the fan 230, thereby increasing the flow path area of ​​the discharged air.

[0325] The upper end of the ejection guide 214 may form a first ejection portion 216. Since the ejection portion 140, the first ejection portion 216, and the second ejection portion 226 have circular shapes, the ejection guide 214 may be configured to have the same radius of curvature as the ejection portion 140 and the first ejection portion 216.

[0326] Reference Figure 15 The front-to-back width of the portion of the cover body 210 that forms the discharge guide portion 214 may be greater than the front-to-back width of the portion that forms the fan mounting portion 211.

[0327] Specifically, when viewed from above, the discharge guide 214 and the first discharge portion 216 can protrude forward by a first height △H1 beyond the fan mounting portion 211. Corresponding to this further protrusion of the first height, the cross-sectional area of ​​the discharge flow path can be increased.

[0328] In another viewpoint, the radius (1 / 2 * D3) of the first ejection portion 216 can be formed to be larger than the front-rear width Ws of the vortex portion 213 by the first height ΔH1. The diameter of the ejection portions 216 and 226 can be formed as D3.

[0329] The first discharge portion 216 may have a generally semi-circular shape. In addition, the second discharge portion 226 of the throttle orifice 220 also has a generally semi-circular shape, and the first discharge portion 216 and the second discharge portion 226 can be combined to form circular discharge portions 216 and 226.

[0330] The first dispensing portion 216 having a semi-circular shape may include a first end portion 216a located adjacent to the first curved portion 140a side of the dispensing portion 140 and a second end portion 216b located adjacent to the cut portion 215.

[0331] The distance between the second portion end 216b and the center of the dehumidifier 10 can be made shorter than the distance between the first portion end 216a and the center of the dehumidifier 10. In addition, the distance between the first portion end 216a and the second portion end 216b can correspond to the diameter of the discharge portions 216, 226 and the discharge section 140.

[0332] Therefore, by constructing an arc-shaped first discharge portion 216 and a second discharge portion 226 corresponding to the circular discharge portion and by distributing a cut portion 215 at one end of the arc-shaped first discharge portion 216 and the second discharge portion 226, the air discharge area is increased and re-intake into the fan is prevented.

[0333] Figure 16This is a diagram showing the back side configuration of the throttling orifice according to an embodiment of the present invention. Figure 17 It is along Figure 6 A sectional view taken along line 17-17.

[0334] Reference Figure 16 and Figure 17 According to an embodiment of the present invention, the throttling orifice 220 may include an anti-backflow structure to prevent the expelled air from flowing back towards the intake side of the fan. The anti-backflow structure may include a guide rib 224 protruding along the intake port 223 in the direction of air intake.

[0335] Specifically, the throttle orifice 220 may include the throttle orifice body 221 on the front appearance of the fan shroud 201.

[0336] The edge of the throttling orifice body 221 may be provided with an assembly rib 225 for assembly with the cover body 210. The assembly rib 225 may protrude from the throttling orifice body 221 toward the rear of the throttling orifice 220.

[0337] The throttling orifice body 221 may include a flared opening 222 forming an intake port 223. The flared opening 222 can be understood as the peripheral area of ​​the intake port 223, including an arc portion with a defined curvature, so that air can be smoothly drawn into the intake port 223.

[0338] The back of the horn 222 may be provided with guide ribs 224, which have an annular shape around the intake 223 and protrude along the axial direction of the fan 230.

[0339] The guide rib 224 can be configured to shield a portion of the outer peripheral surface of the fan 230. Therefore, the guide rib 224 can block airflow toward the outer peripheral surface of the fan 230.

[0340] The configuration of the guide rib 224 prevents air expelled from the fan 230 from being drawn back into the fan 230 around the intake 223 of the fan 230.

[0341] Figure 18 This is a diagram showing the configuration of the vortex portion and the cutout portion of the fan housing according to an embodiment of the present invention. Figure 19 It is along Figure 18 A cross-sectional view taken along line 19-19.

[0342] Reference Figure 18 and Figure 19 According to an embodiment of the present invention, the fan housing 201 can form a fan flow path. The fan flow path may include an upstream flow path 205a and a downstream flow path 205b, which are divided based on a centerline l3' passing through the center of the fan 230 in the vertical direction.

[0343] The upstream side flow path 205a can be understood as an "intake side flow path", which is the flow path through which the air drawn into the fan 230 begins to expand. The downstream side flow path 205b can be understood as an "outflow side flow path" that expands and begins to be expelled along the rotation direction of the fan 230.

[0344] The cutout 215 is configured biased toward the downstream flow path 205b with reference to the centerline l3' passing through the center of the fan 230.

[0345] By not placing the cutout 215 in the downstream flow path 205b at a position beyond the centerline l3′ passing through the center of the fan 230, i.e. not in the upstream flow path 205a, air is prevented from being drawn back into the fan.

[0346] This is because, by positioning the circular discharge portion 140 to the side end of the top surface of the dehumidifier, the cut portion 215 that defines the boundary between the discharged and re-inhaled air can be positioned close to the downstream flow path 205b.

[0347] A first center line l51 can be defined to connect the center of the fan 230 and the cutout 215. The position of the first center line l51 can be referred to as the position of the reference angle (0 degrees).

[0348] From a positional perspective, the first centerline l51 can be considered as being located in the downstream flow path 205b, and since it is the area where the cutout 215 is located, it can also be understood as the starting position of the fan 230's intake.

[0349] By rotating the first centerline l51 by a predetermined angle α along the rotation direction of the fan 230, the second centerline l52 can be defined at a location where the vortex portion 213 begins to intersect with the boundary portion 217.

[0350] In addition, the second center line l52 is rotated along the rotation direction of the fan 230, and a third center line l53 is defined at a height corresponding to the upper end of the cut-out portion 215 and intersecting with the vortex portion 213.

[0351] The second centerline l52 and the third centerline l53 may intersect with the vortex portion 213 that defines the downstream flow path 205b. Additionally, air expansion may occur in the direction from the first centerline l51 toward the third centerline l53.

[0352] For example, the second centerline l52 can be formed in the range of approximately 210-230 degrees from the reference angle position, and the third centerline l53 can be formed in the range of approximately 300-320 degrees from the reference angle position.

[0353] Figure 20 It is along Figure 1 A sectional view cut along line 20-20. Figure 21 It is along Figure 1 A sectional view taken along line 21-21.

[0354] Reference Figure 20 and Figure 21 The upstream flow path 205a and the downstream flow path 205b of the fan flow path 205 can be formed on opposite sides of each other relative to the vertical centerline l3' passing through the center of the fan 230.

[0355] The vertical centerline l5 passing through the center of the cutout 215 can be located between the vertical centerline l3' passing through the center of the fan 230 and the vertical centerline l1' passing through the center of the discharge section 140.

[0356] The center line lc′ passing through the center of the top part 105 in the vertical direction can be located between the center line l3' passing through the center of the fan 230 and the center line l5 passing through the center of the cutout 215 in the vertical direction.

[0357] The downstream flow path 205b can extend from the side of the fan 230 to connect to the blade assembly 142. The uppermost end of the downstream flow path 205b defines a first discharge portion 216 of the shroud body 210 and a second discharge portion 226 of the throttling orifice 220, and the blade assembly 142 can be attached to the first discharge portion 216.

[0358] The flow path width w1 of the discharge portion defined by the first discharge portion 216 and the second discharge portion 226 can form the maximum width of the downstream flow path 205b.

[0359] The dispensing section 140 may be located directly above the dispensing portion. Furthermore, the flow path width w2 of the dispensing section 140 may be substantially the same as the flow path width w1 of the dispensing portions 216 and 226.

[0360] The center of the ejection portion 140 can be concentric with the center of the ejection portions 216 and 226.

[0361] For example, since the discharge portion 140 can be configured as a circular discharge portion, and the discharge portion has a circular shape, the widths w1 and w2 can be defined as the diameters of the circle. According to this configuration, air flowing through the discharge portion can be concentrated and discharged through the discharge portion 140.

[0362] A cutout 215 may be provided in the interface area between the downstream flow path 205b and the upstream flow path 205a to prevent air discharged through the downstream flow path 205b from being drawn back into the upstream flow path 205a.

[0363] The cutout portion 215 may include a first end portion 215a connected to the boundary portion 217 and a second end portion 215b defining the starting point of the upstream flow path 205a. The cutout portion 215 may extend obliquely from the first end portion 215a toward the second end portion 215b relative to a reference line in the vertical direction.

[0364] The airflow of the dehumidifier is explained.

[0365] When the fan motor 237 is driven and the fan 230 rotates, external air can be drawn into the dehumidifier through the intake section 112. The drawn-in air can then pass through the heat exchanger 180.

[0366] Specifically, the air first flows through the evaporator 181 in the heat exchanger 180 and is cooled. The condensate produced in this process can fall into the water tank 130 through the drain port 152c of the heat exchanger support 152a.

[0367] Air flowing through the evaporator 181 is heated as it flows through the condenser 183 located downstream of the evaporator 181. Air flowing through the condenser 183 can be drawn in along the axial direction of the fan 230 and discharged radially via the blades 234 of the fan 230.

[0368] The exhaust air flows through the fan flow path 205 between the vortex section 213 and the fan 230 while expanding in the direction of rotation of the fan 230. The air can flow through the discharge guide section 214 while flowing through the enlarged flow path, ensuring sufficient flow rate in the process.

[0369] The cutout 215 prevents air flowing through the discharge guide 214 from being re-inhaled and facilitates discharge into the discharge section 140.

[0370] On the other hand, the area of ​​the discharge side flow path can be increased by providing a chamfered portion 227 in the throttling orifice 220. The chamfered portion 227 is provided in a position opposite to the discharge guide portion 214 and can extend obliquely to increase the cross-sectional area of ​​the flow path upward.

[0371] With this configuration, the discharge flow rate can be ensured by increasing the area of ​​the discharge side flow path of the fan 230, and the discharge section 140 connected to the discharge side flow path can concentrate the discharged air. Therefore, the dehumidification performance of the object to be dried can be improved.

[0372] For the various components of the dehumidifier mentioned above, the imaginary line passing through the center of the component is called the "center line," but for ease of explanation, it can also be called the "extension line."

[0373] Industrial applicability

[0374] According to this invention, by directly connecting the dehumidifier's discharge section to the discharge section of the fan housing, the resistance to the discharged airflow can be reduced, and the airflow rate can be increased. Therefore, its industrial applicability is very significant.

Claims

1. A dehumidifier, characterized in that, include: The body includes a rear portion having an inhalation portion, a front portion facing the rear portion, a top portion having a circular discharge portion, and a side portion connecting the rear portion and the front portion. A heat exchanger is disposed inside the main body and exchanges heat with the air drawn in through the intake section; A fan is configured on the outlet side of the heat exchanger and draws in air flowing through the heat exchanger axially and discharges it radially. as well as The fan housing has a vortex portion that extends in an arc shape around the outer peripheral surface of the fan to expand the flow path along the direction of rotation of the fan, and a discharge portion connected to the discharge portion. The circular ejector portion has a center located on the center line in the left-right direction that bisects the top surface. The ejection portion corresponds to the circular ejection portion, forming a circular ejection portion with its center located on the center line.

2. The dehumidifier according to claim 1, characterized in that, The circular ejection portion is composed of a first ejection portion having a semi-circular shape with the center of the ejection portion as a reference, and a second ejection portion having a semi-circular shape with the center of the ejection portion as a reference.

3. The dehumidifier according to claim 2, characterized in that, The fan housing includes: The cover body has the fan mounting portion; and A throttling orifice forms an intake port for drawing air into the fan. The cover body and the throttling orifice are connected by a fastening mechanism.

4. The dehumidifier according to claim 3, characterized in that, The fastening mechanism includes: The cover fastening part is provided at the periphery of the vortex part; and A throttling orifice fastening part is provided around the periphery of the throttling orifice and is attached to the cover fastening part.

5. The dehumidifier according to claim 4, characterized in that, The cover fastening part and the throttling hole fastening part are provided in a plurality of spaced apart along the circumferential direction.

6. The dehumidifier according to claim 4, characterized in that, A portion of the vortex section is located between the cover fastening section and the first ejection section. The dehumidifier includes a connecting wall that extends in an arc shape between the throttling orifice fastening portion and the second discharge portion and abuts against a portion of the vortex portion.

7. The dehumidifier according to claim 3, characterized in that, The cover body forms the first discharge portion, and the throttling orifice forms the second discharge portion.

8. The dehumidifier according to claim 3, characterized in that, The mating surface between the cover body and the throttling orifice is located on the center line.

9. The dehumidifier according to claim 1, wherein, The center of the circular ejection portion coincides with the center of the circular ejection part.

10. The dehumidifier according to claim 1, characterized in that, The ejection portion and the ejection section are joined together with substantially the same width so as to concentrate the ejection of air.

11. The dehumidifier according to claim 1, characterized in that, The first curved portion of the outer peripheral surface of the ejector portion, closest to the main body, is formed to have a curvature corresponding to the second curved portion of the first side portion. The curvature centers of the first and second curved portions are formed at the center of the ejection portion.

12. The dehumidifier according to claim 1, characterized in that, It also includes a blade assembly attached to the ejector portion, the blade assembly being supported at the upper end of the ejector portion.

13. The dehumidifier according to claim 1, characterized in that, The ejection portion is located only in the first region of the first region and the second region, which are divided based on the center line in the front-back direction that bisects the top surface.

14. The dehumidifier according to claim 1, characterized in that, The circular ejector portion is positioned to the side relative to the center line that divides the top surface into two equal parts in the front-back direction.

15. The dehumidifier according to claim 3, characterized in that, The throttling orifice includes a throttling orifice body forming the suction inlet and a support plate protruding from the throttling orifice body to support the heat exchanger.

16. A dehumidifier, characterized in that, include: The body includes a rear portion having an inhalation portion, a front portion facing the rear portion, a top portion having an exhalation portion, and a side portion connecting the rear portion and the front portion. A heat exchanger is disposed inside the main body and exchanges heat with the air drawn in through the intake section; A fan is configured on the outlet side of the heat exchanger and draws in air flowing through the heat exchanger axially and discharges it radially. as well as The fan housing has a vortex portion that extends in an arc shape around the outer peripheral surface of the fan to expand the flow path along the direction of rotation of the fan, and a discharge portion connected to the discharge portion. The fan housing includes: The cover body has the mounting part for the fan; as well as A throttling orifice is formed to draw air into the fan's intake and to support the heat exchanger. The cover body and the throttling orifice have mating surfaces that are fastened to each other along the left-right center line of the top surface.

17. The dehumidifier according to claim 16, characterized in that, The center line bisects the ejection portion in the front-to-back direction.

18. The dehumidifier according to claim 17, characterized in that, The center line bisects the ejected portion in the front-to-back direction.

19. The dehumidifier according to claim 16, characterized in that, The ejection portion and the ejection part have a circular shape to form a concentric circle.

20. The dehumidifier according to claim 16, characterized in that, The ejection section and the ejection portion are positioned laterally relative to the center line in the front-back direction that divides the top surface into two equal parts.