Dehumidifier

Abstract

The utility model relates to a dehumidifier. According to the utility model's fan can include: hub, install fan motor to suck in air along the axial direction and along radial direction and spit out, a plurality of blades, surround the hub. The chord length of the blade is formed to be greater than the distance from the lower end of the hub to the blade, thereby being able to stably guide the air flow spitting out along the radial direction and increase the spit-out flow.

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] During the process of dehumidifying the air and expelling it through the exhaust section, it is necessary to improve the exhaust performance and prevent the generation of large 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 that can reduce flow resistance and noise caused by the flow resistance by improving the structure and configuration of the fan and fan cover.

[0012] The purpose of this invention is to provide a dehumidifier that can achieve a small-capacity fan while making the blade chord length relatively long, thereby enabling the air drawn in along the axial direction to be easily expelled along the radial direction of the blade.

[0013] The purpose of this invention is to provide a dehumidifier that reduces curvature changes in the negative pressure surface by forming a larger radius at the leading edge end of the blade, thereby reducing flow stripping phenomena that may occur in the negative pressure surface.

[0014] The purpose of this invention is to provide a dehumidifier in which the blades are configured to include a straight section, a first curved section, and a second curved section, thereby improving the stability of the flow through the positive and negative pressure surfaces of the blades.

[0015] The purpose of this invention is to provide a dehumidifier in which the axial height of the blades is designed to be different in the outer radial direction from the leading edge to the trailing edge of the blades, thereby improving the stability of the airflow from the fan hub to the blades.

[0016] The purpose of this invention is to provide a dehumidifier that uses the center line of the fan as a reference, so that multiple blades adjacent to the discharge side flow path of the fan cover overlap with the cut, thereby preventing the re-intake of the discharged flow and concentrating the discharge into the discharge section.

[0017] means for solving problems

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] A centerline running vertically through the center of the fan can pass through the second region.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The fan according to this invention may include: a hub on which a fan motor is mounted so as to be able to draw in air axially and expel air radially; and a plurality of blades surrounding the hub.

[0029] The chord length of the blade is formed to be greater than the distance from the lower end of the hub to the blade, thereby enabling stable guidance of the radially ejected airflow and increasing the ejection flow rate.

[0030] The lower end of the hub can be understood as the end where the fan's mainboard and hub connect.

[0031] The blade may include at least three surfaces extending in different directions from each other.

[0032] The blade includes a straight section connected to the leading edge and extending toward the trailing edge, which can guide a uniform and smooth flow when air is expelled radially from the leading edge.

[0033] The straight section can be formed with a constant thickness in the direction from the positive pressure surface of the blade toward the negative pressure surface.

[0034] The blade has a larger radius at the leading edge end, which allows the leading edge end to have an arc shape, thereby reducing curvature changes in the negative pressure surface and reducing flow stripping phenomena that may occur on the negative pressure surface.

[0035] The blade may include a first curved face that is connected to the straight face and extends toward the trailing edge.

[0036] The first curved surface is formed to have a first radius of curvature relative to the first curvature center, thereby increasing the force that drives the flow radially outward from the blade surface.

[0037] The blade may include a second curved face that is connected to the first curved face and extends toward the trailing edge.

[0038] The second curved surface is formed to have a second radius of curvature relative to the second curvature center, thereby enabling air to be easily directed outwards along the radial direction of the fan.

[0039] This invention improves the stability of airflow from the fan hub to the blades by designing the axial height of the blades to be different in the outer radial direction from the leading edge to the trailing edge of the blades.

[0040] In particular, by making the height of the leading edge side smaller and the height of the trailing edge side relatively larger, the flow resistance in the region adjacent to the hub can be reduced and the positive pressure performance in the trailing edge side can be improved.

[0041] This invention may include at least one blade that overlaps with the cut among a plurality of blades.

[0042] The overlapping blades can be blades adjacent to the exhaust flow path with the fan's centerline as a reference. With this blade and slit configuration, the exhaust air encounters the slits before passing the fan's center, based on the fan's rotation direction, thus preventing the re-intake of the exhaust flow.

[0043] In one aspect of this invention, a dehumidifier may include: a body having an intake section and an exhaust section; a heat exchanger disposed inside the body and exchanging heat with air drawn in through the intake section; a fan disposed on the outlet side of the heat exchanger and axially drawing in air flowing through the heat exchanger and radially exhausting it; and a fan housing having a vortex section configured to surround the outer peripheral surface of the fan.

[0044] The fan may include: a main board, mounted on the fan housing; a hub, protruding from the center of the main board and housing a fan motor; and a plurality of blades arranged circumferentially along the main board and having leading and trailing edges.

[0045] The radial length L1 of the blade can be configured to be greater than the distance L2 from the leading edge of the blade to the hub.

[0046] The hub may include: an upper end portion of the hub, forming a shaft connection portion through which the shaft of the fan motor passes; a first bend portion extending from the upper end portion of the hub with a first curvature; and a second bend portion extending from the first bend portion with a second curvature.

[0047] The radial length L1 of the blade can be formed to be greater than the distance L2 from the leading edge of the blade to the second bend of the hub.

[0048] The radial length L1 of the blade can form the length of a chord that runs straight from the leading edge to the trailing edge.

[0049] The blade includes: a plate connection portion, which is coupled to the main plate; and a tip, which forms an opposing surface of the plate connection portion, the tip being configured to vary in distance from the main plate in a direction from the leading edge to the trailing edge.

[0050] The tip can be configured such that the distance between it and the motherboard increases in the direction from the leading edge to the trailing edge.

[0051] The tip includes: a first tip end connected to the leading edge; and a second tip end connected to the trailing edge, wherein the distance from the motherboard to the tip can be configured such that the distance from the second tip end to the motherboard is greater than the distance from the first tip end to the motherboard.

[0052] The leading edge has an arc shape extending from a set curvature center Cb1, which can be formed inside the blade.

[0053] The blade may include a straight section that is connected to the leading edge and extends linearly toward the trailing edge.

[0054] The blade includes: a positive pressure surface Pr1 facing the direction of air blowing; and a negative pressure surface Pr2 forming the opposite side of the positive pressure surface, and the distance from the positive pressure surface Pr1 to the negative pressure surface Pr2 can be formed to be constant across the straight section.

[0055] The blade may include: a first curved facet connected to the straight facet and extending in an arc toward the trailing edge; and a second curved facet extending in an arc from the first curved facet and connected to the trailing edge.

[0056] The curvature centers of the first curved surface and the curvature centers of the second curved surface can be formed at different locations.

[0057] The first curved face is connected to the leading edge and has a shape that protrudes in a direction away from the motherboard.

[0058] With the center of the fan as a reference, the outer peripheral surface of the fan and the vortex section can be divided into an intake flow path and an exhaust flow path.

[0059] The fan housing also includes a cutout protruding from the vortex section to prevent air flowing through the discharge side flow path from being drawn back into the intake side flow path. The plurality of blades may include blades that overlap with the cutout in the discharge side flow path.

[0060] The ejection portion may include a circular ejection portion formed on the top surface of the body, the circular ejection portion having the same width as the ejection side flow path.

[0061] The cutout may be formed at an angle relative to a centerline in the vertical direction passing through the center of the fan, and the distance between the cutout and the fan may correspond to the minimum width of the intake side flow path and the exhaust side flow path.

[0062] In another aspect of this invention, the fan of the dehumidifier may include: a main board, mounted on the fan housing; a hub, protruding from the center of the main board and housing the fan motor; and a plurality of blades, arranged along the circumferential direction of the main board and having a leading edge and a trailing edge.

[0063] The blade may include: a straight section connected to the leading edge with respect to the outer radial direction; a first curved section connected to the straight section and having a first radius of curvature; and a second curved section connected to the first curved section and having a second radius of curvature.

[0064] The first radius of curvature and the second radius of curvature may be different.

[0065] Based on the motherboard, the height of the leading edge can be made smaller than the height of the trailing edge.

[0066] The chord length from the leading edge to the trailing edge of the blade can be substantially the same as the radial length of the mainboard.

[0067] The first radius of curvature may be different from the radius of curvature of the leading edge, and the second radius of curvature may be different from both the radius of curvature of the leading edge and the first radius of curvature.

[0068] Utility Model Effect

[0069] 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.

[0070] 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.

[0071] 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.

[0072] According to the embodiments of this utility model, a small-capacity fan can be achieved while making the blade chord length relatively long, thereby making it easy to expel air drawn in along the axial direction along the radial direction of the blade.

[0073] According to an embodiment of the present invention, by forming a larger radius at the leading edge end of the blade to reduce curvature changes in the negative pressure surface, flow stripping phenomena that may occur in the negative pressure surface can be reduced.

[0074] According to an embodiment of the present invention, by configuring the blade to include a straight section, a first curved section, and a second curved section, the stability of the flow through the positive and negative pressure surfaces of the blade can be improved.

[0075] According to an embodiment of the present invention, by designing the axial height of the blades to be different in the outer radial direction from the leading edge to the trailing edge of the blades, the stability of the airflow from the fan hub to the blades can be improved.

[0076] According to an embodiment of the present invention, with the center line of the fan as a reference, a plurality of blades adjacent to the discharge side flow path of the fan cover overlap with the cut, thereby preventing the re-intake of the discharge flow and concentrating the discharge towards the discharge section. Attached Figure Description

[0077] Figure 1 This is a front perspective view of a dehumidifier according to an embodiment of the present invention.

[0078] Figure 2 This is a rear perspective view of a dehumidifier according to an embodiment of the present invention.

[0079] Figure 3 This is a front perspective view of a dehumidifier according to an embodiment of the present invention.

[0080] Figure 4 This is a top perspective view of a dehumidifier according to an embodiment of the present invention.

[0081] Figure 5 This is an exploded perspective view of a dehumidifier according to an embodiment of the present invention.

[0082] Figure 6 This is a perspective view of a fan assembly according to an embodiment of the present invention.

[0083] Figure 7 This is an exploded perspective view of the fan cover according to an embodiment of the present invention.

[0084] Figure 8 This is a perspective view of a fan according to an embodiment of the present invention.

[0085] Figure 9 This is a top view of a fan according to an embodiment of the present invention.

[0086] Figure 10 It is along Figure 9 A sectional view taken along line 10-10.

[0087] Figure 11 It is magnification Figure 8 The diagram of part "A".

[0088] Figure 12 This is a perspective view of the blade according to an embodiment of the present invention.

[0089] Figure 13 This is a front view of the blade according to an embodiment of the present invention.

[0090] Figure 14 This is a top-down view of the fan components according to an embodiment of the present invention.

[0091] Figure 15a This is a schematic diagram illustrating the configuration of the blades and edges of a fan according to the prior art, as well as the flow state.

[0092] Figure 15b This is a schematic diagram illustrating the configuration of the blades and edges of a fan according to an embodiment of the present invention, as well as the flow state.

[0093] Figure 16 This is a diagram showing the state in which the fan is arranged inside the fan housing according to an embodiment of the present invention.

[0094] Figure 17a This is a diagram showing the configuration of a fan and fan housing according to the prior art.

[0095] Figure 17b It is based on comparison Figure 17a Experimental performance curves of fans according to existing technology and embodiments of the present invention.

[0096] Figure 18 It is along Figure 1 A sectional view taken along line 18-18.

[0097] Figure 19 It is along Figure 1 A cross-sectional view taken along line 19-19. Detailed Implementation

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] A compressor 161, a water tank 130, and an electrical device 170 may be configured inside the housing 120.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] For example, the ejection portion 140 may include a circular ejection portion with the width as its diameter.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] The drive section may also include an electrical device 170 having electrical components of a dehumidifier.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] On the other hand, the center line l3 in the vertical direction passing through the center of the fan 230 (refer to...) Figure 18 It can pass through the second region.

[0146] 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 18 The centerline l4, located vertically through the center of the ejector section 140, can be referenced. Figure 18 Between the center line in the vertical direction passing through the center of the fan.

[0147] The fan housing 201 may include a cutout 215 forming the boundary between the intake and exhaust sides of the fan 230, and a centerline l5 in the vertical direction passing through the cutout 215 (see [reference]). Figure 18 It can pass through the first region of the top surface 105.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] That is, the left-right center line lo can bisect the ejection part 140 in the front-back direction and at the same time bisect the top part 105 in the front-back direction.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] The throttling orifice 220 may include an upper support plate 228 located at the upper end of the heat exchanger 180.

[0157] 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.

[0158] The contact surfaces of the cover body 210 and the throttling orifice 220 can be located on the left-right centerline lo.

[0159] 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.

[0160] Figure 5 This is an exploded perspective view of a dehumidifier according to an embodiment of the present invention. Figure 6 This is a perspective view of a fan assembly according to an embodiment of the present invention. Figure 7 This is an exploded perspective view of the fan cover according to an embodiment of the present invention.

[0161] Reference Figures 5 to 7 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] The heat exchanger support 152a may include a support bracket 152d that supports the bottom surface of the heat exchanger 180.

[0170] 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 18 ).

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] The fan assembly 200 may include a housing body 210 that houses a fan 230 and has an open rear end. The housing body 210 may include a fan mounting portion 211 for mounting the fan 230. To allow the fan 230 to rotate, the fan 230 may be positioned slightly spaced from the fan mounting portion 211.

[0180] The surface forming the fan mounting portion 211 can form the "bottom surface" of the cover body 210.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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 16 Since the downstream flow path 205b is connected to the discharge section 140, it can be named the "discharge side flow path".

[0185] The upstream flow path 205a and the downstream flow path 205b can be distinguished with the center of the fan 230 as a reference.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] The cover body 210 may also include a cutout 215 that serves as the boundary between the expulsion and re-inhalation of airflow.

[0193] 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.

[0194] 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.

[0195] For example, the cutout portion 215 may include a first end portion 215a connected to the boundary portion 217 (see reference). Figure 18 ) and the second end portion 215b connected to the starting portion of the vortex section 213 (refer to Figure 18 ).

[0196] 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.

[0197] The upper end of the ejection guide 214 may correspond to the upper end of the cut portion 215. The blade assembly 142 is disposed at the upper end of the ejection guide 214, and the ejection blade 145 of the blade assembly 142 can open or close the ejection portion 140 by operation.

[0198] 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.

[0199] With this configuration, it is possible to prevent the air expelled from the fan 230, i.e., the air flowing in the downstream flow path 205b, from being re-inhaled into the intake side of the fan 230.

[0200] 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.

[0201] However, these problems can be prevented by configuring the cutout 215 to be off-center from the center of the fan 230 toward the discharge side flow path and to protrude sharply from the inner surface of the cover body 210.

[0202] 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.

[0203] 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.

[0204] The throttling orifice 220 may be disposed at the upper end of the throttling orifice body 221, and may include a second discharge portion 226 that cooperates with the first discharge portion 216 of the cover body 210. If the first discharge portion 216 and the second discharge portion 226 are assembled, a discharge portion having a shape (circular) corresponding to the discharge portion 140 can be formed.

[0205] The blade assembly 142 can be installed on the portion where the first ejection portion 216 and the second ejection portion 226 are assembled. The blade assembly 142 can be installed on the upper end of the first ejection portion 216 and the second ejection portion 226.

[0206] The throttling orifice 220 can be located above the suction port 223, and an upper support plate 228 can be provided to support the upper end of the heat exchanger 180. The heat exchanger 180 can be configured in the space between the upper support plate 228 and the partition plate 151.

[0207] 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.

[0208] 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.

[0209] 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 can be stably supported in front of the suction port 223 by the support plates 228, 229a, and 229b.

[0210] 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.

[0211] 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 a direction that increases the discharge area of ​​the air.

[0212] The chamfered portion 227 may have an upwardly enlarged flow path cross-sectional area, so that the air discharged through the downstream flow path 205b expands and is discharged to the discharge portion 140.

[0213] 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.

[0214] The fan assembly 200 may further include a fan 230 disposed in the space defined by the housing body 210 and the throttle orifice 220.

[0215] 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.

[0216] 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.

[0217] The motherboard 231 can be mounted on the fan mounting section 211 of the fan cover 201.

[0218] 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 236 for engagement with the motor shaft.

[0219] The hub 232 can protrude from the center of the main board 231 toward the intake port 223. The motor shaft can pass through the protruding portion of the hub 232 and be coupled to the fan motor 237.

[0220] 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.

[0221] The edge 233 can be annular. The edge 233 can be parallel to the motherboard.

[0222] 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.

[0223] The fan 230 will now be described in more detail with reference to the accompanying drawings.

[0224] Figure 8 This is a perspective view of a fan according to an embodiment of the present invention. Figure 9 This is a top view of a fan according to an embodiment of the present invention. Figure 10 It is along Figure 9 A sectional view taken along line 10-10. Figure 11 It is magnification Figure 8 The diagram of part "A".

[0225] Reference Figures 8 to 10 According to an embodiment of the present invention, the fan 230 may include a hub 232 forming a central portion Cf of the fan. The hub 232 may form a shaft engagement portion 236 for shaft engagement with a fan motor 237, and the shaft engagement portion 236 may form the central portion Cf of the fan 230.

[0226] The shaft connection portion 236 may include an opening in a portion of the upper end of the hub 232.

[0227] The hub 232 may include an upper hub end portion 232a that protrudes axially from the main board 231 and forms the shaft connection portion 236. The upper hub end portion 232a can be understood as the part of the hub 232 that is furthest from the main board 231.

[0228] The upper end portion 232a of the hub may include reinforcing ribs 235 extending radially from the shaft connection portion 236 to enhance the strength of the hub 232. A plurality of reinforcing ribs 235 may be spaced apart along the circumferential direction of the shaft connection portion 236.

[0229] The hub 232 may include a first curved portion 232b that extends arcuately from the upper end portion 232a toward the main board 231 with a first radius of curvature. The first curved portion 232b may surround the upper end portion 232a and may extend arcuately around the outer periphery of the upper end portion 232a.

[0230] The hub 232 may include a second curved portion 232c that extends arcuately from the first curved portion 232b toward the main board 231 with a second radius of curvature. The second curved portion 232c may extend arcuately around the outer periphery of the first curved portion 232b.

[0231] Based on the extension direction of the motherboard 231, the first curved portion 232b can be formed to protrude upward in an arc shape, and the second curved portion 232c can be formed to be formed to be recessed downward in an arc shape.

[0232] The radial length L4 of the first curved portion 232b can be formed to be greater than the radial length L3 of the second curved portion 232c.

[0233] The second curved portion 232c can be connected to the main board 231. Specifically, the main board 231 may include a flat, plate-shaped straight portion 231a that extends radially outward from the end of the second curved portion 232c.

[0234] Blade 234 may be disposed on the straight portion 231a. The blade 234 may be configured to be radially spaced from the second curved portion 232c and extend radially along the main plate 231.

[0235] The structure of the blade 234 will be described.

[0236] The blade 234 may include: a leading edge 234a, which forms the front end through which the exhaust air flows when air drawn in along the fan axis is discharged radially; and a trailing edge 234b, which forms the rear end through which the exhaust air flows.

[0237] The leading edge 234a can form the innermost radial side of the blade 234, and the trailing edge 234b can form the outermost radial side of the blade 234.

[0238] The trailing edge 234b can be attached to the inner side of the edge 233.

[0239] The blade 234 may be configured to have a predetermined height along the axial direction of the fan 230. The upper end of the blade 234 may form a tip 234c, and the lower end of the blade 234 may form a board connection portion 234d connected to the main board 231.

[0240] The board connection portion 234d can be formed to connect to the first end of the main board 231, and the tip 234c can be formed to connect to the second end of the edge 233.

[0241] The blade 234 may be configured to have a vertical height from the plate connection portion 234d to the tip 234c.

[0242] The following defines the direction. The top and bottom of fan 230 can indicate the axial direction. In addition, the top of fan 230 can be the direction in which hub 232 protrudes from motherboard 231, indicating the direction of air intake, and the bottom of fan 230 can indicate the direction in which air is drawn in axially.

[0243] The blade 234 can have a generally polygonal shape through the leading edge 234a, trailing edge 234b, tip 234c, and plate connection portion 234d.

[0244] A radial straight line connecting the leading edge 234a to the trailing edge 234b of the blade 234 is defined as a chord, and the chord may have a specified length L1.

[0245] The leading edge 234a can be formed adjacent to the second curved portion 232c of the hub 232. That is, the straight portion 231a of the main board 231 can be formed very short between the leading edge 234a and the second curved portion 232c.

[0246] In another view, the length L1 of the chord of the blade 234 can be formed to be greater than the length L2 of the straight portion 231a located between the leading edge 234a and the second curved portion 232c.

[0247] The length L2 of the straight section 231a can be understood as the distance from the leading edge 234a of the blade 234 to the hub 232.

[0248] The length L2 of the straight section 231a can be made very small; for example, the length L2 can have a value close to 0.

[0249] With this configuration, the radial length of the main plate 231 extending from the hub 232 and the radial length of the blade 234 can be made approximately the same. That is, the radial length of the blade 234 can be made relatively long.

[0250] Therefore, the air drawn in along the fan's axial direction and discharged radially can act directly on the blades 234 and be easily guided.

[0251] Furthermore, since the space between the leading edge 234a of the blade 234 and the hub 232 is reduced, interference between the radial airflows discharged from said space can be prevented. As a result, noise can be reduced and the exhaust air volume can be increased.

[0252] The blade 234 may include: a positive pressure surface Pr1, which faces the direction in which the air blows, with the rotation direction of the blade 234 as a reference; and a negative pressure surface Pr2, which forms the opposite side of the positive pressure surface. It can be understood that the positive pressure surface Pr1 is the surface that is pressurized by the air, and the negative pressure surface Pr2 is the surface that is subjected to an outward pulling force.

[0253] by Figure 9 Based on the reference direction, the fan 230 rotates counterclockwise. With the counterclockwise direction as the reference, the left side of the blade 234 can form a positive pressure surface Pr1, and the right side can form a negative pressure surface Pr2.

[0254] Reference Figure 8 and Figure 11 Multiple blades 234 can be arranged spaced apart along the circumference of the fan 230.

[0255] The plurality of blades 234 extend radially, and the negative pressure surface Pr2 of one blade 234 can be configured to face the positive pressure surface Pr1 of another blade 234 adjacent to the one blade 234.

[0256] A radial airflow path f1 can be formed between the negative pressure surface Pr2 of one blade 234 and the positive pressure surface Pr1 of the other blade 234. The airflow path f1 may include a plurality of flow paths corresponding to the number of the plurality of blades 234.

[0257] The tip 234c forming the upper end of the blade 234 may include a curved surface that extends in an arc with a prescribed curvature.

[0258] The tip 234c may include a first tip end 234c1 connected to the leading edge 234a and a second tip end 234c2 connected to the trailing edge 234b.

[0259] The first tip 234c1 can be connected to the upper end of the leading edge 234a. The tip 234c can protrude upward from the first tip 234c1 and extend in an arc shape, and extend radially outward. In this case, the tip 234c can be configured to have a curvature that changes more significantly towards the outer radial direction and to have a smooth curved surface.

[0260] The tip 234c can be connected from the second tip end 234c2 to the upper end of the trailing edge 234b.

[0261] As air drawn in along the axial direction of the fan 230 is discharged radially, it first encounters the leading edge 234a and the first tip 234c1, and then flows through the flow path f1.

[0262] At this time, the first tip 234c1 can be formed at a relatively low position to prevent eddies from forming on the leading edge 234a and the side of the first tip 234c1 due to flow resistance. The height can be understood as the distance from the main board 231.

[0263] That is, the height of the leading edge 234a is relatively small.

[0264] The height of the tip 234c can increase as it approaches the outer radial direction, and can reach its maximum height at the second tip end 234c2. The height of the second tip end 234c2 can be greater than the height of the first tip end 234c1.

[0265] That is, the height of the trailing edge 234b can be made relatively large.

[0266] Therefore, based on the motherboard 231, the height of the trailing edge 234b can be made greater than the height of the leading edge 234a.

[0267] The shape of blade 234 will now be described in more detail with reference to the accompanying drawings.

[0268] Figure 12 This is a perspective view of the blade according to an embodiment of the present invention. Figure 13 This is a front view of the blade according to an embodiment of the present invention. Figure 14 This is a top-down view of the fan components according to an embodiment of the present invention. Figure 15a This is a schematic diagram illustrating the configuration of the blades and edges of a fan according to the prior art, as well as the flow pattern. Figure 15b This is a schematic diagram illustrating the configuration of the blades and edges of a fan according to an embodiment of the present invention, as well as the flow state.

[0269] First, refer to Figure 12 and Figure 13 According to this invention, the blade 234 can extend radially from the leading edge 234a toward the trailing edge 234b. In this case, the blade 234 can be configured to change direction from the leading edge 234a to the trailing edge 234b to form a flow that bends with the outer radial direction as a reference.

[0270] The blade 234 may include a board connection portion 234d connected to the main board 231 and a tip 234c on the opposite side of the board connection portion 234d.

[0271] The board connection portion 234d can be formed to have a straight surface so as to be combined with the flat motherboard 231.

[0272] The tip 234 may be configured such that its height from the main board 231 varies in the direction from the leading edge 234a toward the trailing edge 234b, for example, by increasing.

[0273] The height H1 of the first tip end 234c1 forming the front end of the tip 234 can be made smaller than that of the second tip end 234c2 forming the rear end.

[0274] With this configuration, when air is drawn in along the axial direction of the fan 230, interference between the air and the blades 234 can be prevented on the side relatively close to the leading edge 234a of the hub 232.

[0275] In addition, the air flowing radially out of the hub 232 can easily flow from the leading edge 234a toward the trailing edge 234b, thereby reducing noise and increasing the exhaust volume.

[0276] Reference Figure 14 According to an embodiment of the present invention, the leading edge 234a of the blade 234 can be configured to have a relatively large radius of curvature, thereby having a short and stout shape. For example, the leading edge 234a can have an arcuate shape.

[0277] Specifically, the leading edge 234a may extend in an arc shape, such that it has a predetermined radius with respect to the center of curvature (Cb1). The center of curvature Cb1 may be formed in the region of the blade 234, i.e., inside the blade 234.

[0278] The blade 234 may include a straight section 2341 extending linearly from the leading edge 234a toward the trailing edge 234b. Airflow divided into a positive pressure surface Pr1 and a negative pressure surface Pr2 in the leading edge 234a can be stably formed along the straight section 2341.

[0279] The straight section 2341 can extend from both ends of the leading edge 234a toward the trailing edge 234b.

[0280] The thickness t1 of the straight section 2341, that is, the distance from the positive pressure surface Pr1 to the negative pressure surface Pr2, can be formed to be constant across the straight section 2341.

[0281] The blade 234 may include a first curved section 2342 that extends arcuately from the straight section 2341 toward the trailing edge 234b.

[0282] The first curved portion 2342 may extend in an arc shape, such that it has a predetermined radius with respect to the center of curvature Cb2. The radius of curvature of the first curved portion 2342 may be different from the radius of curvature of the leading edge 234a.

[0283] The first curved portion 2342 is connected to the leading edge 234a and may have a shape that protrudes in a direction away from the main board 231.

[0284] refer to Figure 15bWhen a tangent lp parallel to the straight portion 2341 is defined at the intersection point P1 of the straight portion 2341 and the first curved portion 2342, the angle θ1 formed by the tangent lp and the first curved portion 2342 can be relatively small.

[0285] That is, the curvature on the surface of the blade 234 does not change abruptly. Therefore, a stable airflow f1 (steady flow) can be generated from the leading edge 234a through the straight portion 2341 toward the first curved portion 2342.

[0286] on the other hand, Figure 15a It can have the shape of an existing blade. The existing blade may not include the straight section according to this embodiment.

[0287] However, when a tangent lp′ is defined from a location similar to location P1 in this embodiment, the angle θ1′ formed by the tangent lp′ and the curved portion of the blade can be relatively large. This angle θ1′ can be larger than the angle θ1 according to this embodiment.

[0288] That is, based on the existing blade configuration, due to the drastic change in the curvature of the blade surface, unstable airflow f1' (generating vortices fv) may be generated when air flows from the leading edge to the trailing edge.

[0289] The blade 234 may include a second curved portion 2343 that extends arcuately from the first curved portion 2342 toward the trailing edge 234b. The second curved portion 2343 may be connected to the trailing edge 234b.

[0290] The second curved surface 2343 may extend in an arc shape, such that it has a predetermined radius with respect to the center of curvature Cb3. The center of curvature Cb3 of the second curved surface 2343 may be formed at a different position than the center of curvature Cb2 of the first curved surface 2342.

[0291] In addition, the radius of curvature of the second curved surface 2343 may be different from the radius of curvature of the leading edge 234a and the radius of curvature of the first curved surface 2342.

[0292] With this configuration, a stable airflow is generated along the blades 234, which reduces noise and increases the exhaust volume.

[0293] exist Figure 14 In this paper, the straight surface 2341, the first curved surface 2342, and the second curved surface 2343 are described based on the negative pressure surface Pr2. However, the straight surface, the first curved surface, and the second curved surface can also be formed in the positive pressure surface Pr1.

[0294] Figure 16 This is a diagram showing the state in which the fan is arranged inside the fan housing according to an embodiment of the present invention. Figure 17a This is a diagram illustrating the configuration of a fan and fan housing according to the prior art. Figure 17b It is based on comparison Figure 17a Experimental performance curves of fans according to existing technology and embodiments of the present invention.

[0295] First, refer to Figure 16 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 with the vertical center line l3 of the fan 230 as a reference.

[0296] 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 "exhaust side flow path" that expands and begins to be expelled along the rotation direction of the fan 230.

[0297] The cutout 215 can be eccentrically configured towards the downstream flow path 205b with reference to the center line l3 of the fan 230.

[0298] By not placing the cutout 215 in the downstream flow path 205b at a position that crosses the center line l3 of the fan 230, i.e., not in the upstream flow path 205a, air is prevented from being drawn back into the fan.

[0299] This is because, by eccentrically positioning the circular discharge portion 140 toward the side end of the upper surface of the dehumidifier, the cut portion 215 that defines the boundary between air discharge and re-inhalation can be positioned close to the downstream flow path 205b.

[0300] The cutout 215 and the blades 234 of the fan 230 can be configured to overlap vertically within a defined overlap interval A1. The overlapping plurality of blades 234 are located in the downstream flow path 205b with the centerline l3 of the fan 230 as a reference.

[0301] The radial width of the upstream flow path 205a, i.e., the distance from the outer peripheral surface of the fan 230 to the vortex section 213, can be defined as the first distance △S1. Furthermore, the radial width of the downstream flow path 205b, i.e., the distance from the outer peripheral surface of the fan 230 to the vortex section 213, can be defined as the second distance △S1'.

[0302] The second interval can be formed to be larger than the first interval. As described above, since the discharge side flow path is formed to be larger than the suction side flow path according to the shape of the vortex section 213, the discharge air volume can be increased.

[0303] Figure 17a A fan housing according to the prior art is shown. In the fan housing according to the prior art, when a centerline l3' is defined passing through the center Cf' of the fan 230' in the vertical direction, the cutout 215' can be configured in the upstream flow path.

[0304] In addition, the blades 234' of the fan 230' can have a relatively short length in the radial direction, and the distance ΔS2 between the hub of the fan and the leading edge of the blades 234' can be made relatively large.

[0305] Therefore, when the air drawn into the hub side of the fan is discharged into the flow path between the plurality of blades 234', flow interference may occur in the region forming the distance ΔS2.

[0306] A plurality of blades overlapping the cutout portion 215' in the vertical direction can be configured in the upstream flow path.

[0307] Figure 17b Show comparison based on Figure 16 The flow performance in the fan housing of the embodiment and according to Figure 17a Experimental results of the flow performance in the existing fan casing. In the graph, the horizontal axis represents the fan flow rate, the first vertical axis represents the pressure, and the second vertical axis represents the efficiency (%).

[0308] Figure 16 The fan shown according to this embodiment can be compared to Figure 17a The fan shown is smaller than that of existing technology.

[0309] In both this embodiment and the prior art, the system resistance increases as the fan flow rate (vertical axis value) increases. By configuring the fan housing according to this embodiment to be smaller than the fan housing according to the prior art, the system resistance (solid line) in the fan housing according to this embodiment can be made slightly larger than the system resistance (dashed line) of the prior art.

[0310] However, as described above, by changing the design of the fan blades and fan housing, the positive pressure performance of the fan according to this embodiment can be made to be higher than that of the prior art.

[0311] On the other hand, regarding the fan flow rate at the intersection of the system resistance line and the line representing positive pressure performance, the flow rate Q2 according to this invention can be substantially the same as the flow rate Q1 of the prior art. As a result, it can be seen that even if the fan is configured to be small, the exhaust air volume is formed to be almost the same.

[0312] Furthermore, the operating efficiency of the fan according to this embodiment (approximately 41%) is higher than that of the fan according to the prior art (approximately 34%). This can be seen as an increase in the ratio of output power to input power applied to the fan as the fan is miniaturized, thus increasing the fan's operating efficiency.

[0313] Although not shown in the graph, from a noise perspective, the noise of the fan according to this embodiment is reduced by approximately 2 dB compared to the noise of a fan according to the prior art.

[0314] Figure 18 It is along Figure 1 A sectional view taken along line 18-18. Figure 19 It is along Figure 1 A sectional view taken along line 19-19.

[0315] Reference Figure 18 and Figure 19 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 of the fan 230.

[0316] The vertical center line l5 of the cutout portion 215 can be located between the center line l3 of the fan 230 and the vertical center line l4 of the discharge portion 140.

[0317] The center line lc′ passing through the center of the top part 105 in the left-right direction along the vertical direction can be located between the center line l3 of the fan 230 and the vertical center line l5 of the cutout 215.

[0318] The downstream flow path 205b extends upward and laterally from the fan 230, thereby connecting 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, to which the blade assembly 142 can be attached.

[0319] 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.

[0320] 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.

[0321] The center of the ejection section 140 can be concentric with the center of the ejection sections 216 and 226.

[0322] For example, since the discharge portion 140 can be configured as a circular discharge portion, 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.

[0323] 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.

[0324] 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.

[0325] The airflow of the dehumidifier is explained.

[0326] 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.

[0327] 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.

[0328] 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.

[0329] 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.

[0330] The cutout 215 prevents air flowing through the discharge guide 214 from being re-inhaled and facilitates discharge into the discharge section 140.

[0331] 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.

[0332] 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.

[0333] 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."

[0334] Industrial applicability

[0335] The dehumidifier according to this invention, by improving the composition and configuration of the fan and fan housing, can reduce flow resistance and the noise generated by said flow resistance. Therefore, its industrial applicability is very significant.

Claims

1. A dehumidifier, characterized in that, include: The main body has an inhalation section and an exhalation section; 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 is provided with a vortex portion configured to surround the outer peripheral surface of the fan. The fan includes: a main board mounted on the fan housing; a hub protruding from the center of the main board and housing a fan motor; and a plurality of blades arranged circumferentially along the main board and having leading and trailing edges. The radial length of the blade is formed to be greater than the distance from the leading edge of the blade to the hub.

2. The dehumidifier according to claim 1, characterized in that, The hub includes: an upper end portion forming a shaft connection portion through which the shaft of the fan motor passes; a first bend extending from the upper end portion of the hub with a first curvature; and a second bend extending from the first bend with a second curvature. The radial length of the blade is formed to be greater than the distance from the leading edge of the blade to the second bend of the hub.

3. The dehumidifier according to claim 1, characterized in that, The radial length of the blade forms the length of a chord that runs straight from the leading edge to the trailing edge.

4. The dehumidifier according to claim 1, characterized in that, The blade includes: a plate connecting portion, which is coupled to the main plate; and a tip, forming an opposing surface of the plate connecting portion. The tip is formed such that its distance from the motherboard changes in the direction from the leading edge to the trailing edge.

5. The dehumidifier according to claim 4, characterized in that, The tip is formed such that the distance between it and the motherboard increases in the direction from the leading edge to the trailing edge.

6. The dehumidifier according to claim 4, characterized in that, The tip includes: a first tip end connected to the leading edge; and a second tip end connected to the trailing edge. The distance from the motherboard to the tip is such that the distance from the second tip end to the motherboard is greater than the distance from the first tip end to the motherboard.

7. The dehumidifier according to claim 1, characterized in that, The leading edge has an arcuate shape extending from a predetermined center of curvature, which is formed inside the blade.

8. The dehumidifier according to claim 1, characterized in that, The blade includes a straight section that is connected to the leading edge and extends linearly toward the trailing edge.

9. The dehumidifier according to claim 8, characterized in that, The blade includes: a positive pressure surface facing the direction in which the air blows; and a negative pressure surface forming the opposite side of the positive pressure surface. The distance from the positive pressure surface to the negative pressure surface across the straight section is constant.

10. The dehumidifier according to claim 8, characterized in that, The blade includes: The first curved face connects to the straight face and extends in an arc towards the rear edge; and The second curved face extends arcuately from the first curved face and connects to the trailing edge.

11. The dehumidifier according to claim 10, characterized in that, The curvature centers of the first curved surface and the curvature centers of the second curved surface are formed at different locations.

12. The dehumidifier according to claim 10, characterized in that, The first curved face is connected to the leading edge and has a shape that protrudes in a direction away from the motherboard.

13. The dehumidifier according to claim 1, characterized in that, With the center of the fan as a reference, the outer peripheral surface of the fan and the vortex section are divided into an intake flow path and an exhaust flow path. The fan housing also includes a slit protruding from the vortex section to prevent air flowing through the discharge side flow path from being drawn back into the intake side flow path. The plurality of blades includes the blades that overlap with the cut portion in the discharge side flow path.

14. The dehumidifier according to claim 13, characterized in that, The ejection portion includes a circular ejection portion formed on the top surface of the body, and the circular ejection portion may have the same width as the ejection side flow path.

15. The dehumidifier according to claim 13, characterized in that, The cutout is formed at an angle relative to the centerline in the vertical direction passing through the center of the fan, and the distance between the cutout and the fan corresponds to the minimum width of the suction side flow path and the discharge side flow path.

16. A dehumidifier, characterized in that, include: The main body has an inhalation section and an exhalation section; 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 is provided with a vortex portion configured to surround the outer peripheral surface of the fan. The fan may include: a mainboard mounted on the fan housing; a hub protruding from the center of the mainboard and housing a fan motor; and a plurality of blades arranged circumferentially along the mainboard and having leading and trailing edges. The blade includes: a straight section connected to the leading edge with respect to the outer radial direction; a first curved section connected to the straight section and having a first radius of curvature; and a second curved section connected to the first curved section and having a second radius of curvature.

17. The dehumidifier according to claim 16, characterized in that, The first radius of curvature and the second radius of curvature are different.

18. The dehumidifier according to claim 16, characterized in that, Based on the motherboard, the height of the leading edge is set to be less than the height of the trailing edge.

19. The dehumidifier according to claim 16, characterized in that, The chord length from the leading edge to the trailing edge of the blade is substantially the same as the radial length of the mainboard.

20. The dehumidifier according to claim 16, characterized in that, The first radius of curvature is different from the radius of curvature of the leading edge. The second radius of curvature is different from the radius of curvature of the leading edge and the first radius of curvature.

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