Dehumidifier and method for controlling same

Abstract

The present invention relates to a dehumidifier and a method for controlling same. The dehumidifier according to an embodiment of the present invention comprises: a main body provided with a suction unit and a fan; a dehumidification module comprising dehumidification members for separating moisture from the air sucked in by the suction unit by running the fan; a vacuum pump for providing driving power for discharging the moisture separated from the dehumidification module to the outside; a heat exchanger, connected fluid-wise to the vacuum pump, for condensing the separated moisture; a drain tank for storing the water condensed in the heat exchanger; and a control unit that variably controls the output of the vacuum pump on the basis of the operation mode.

Description

Dehumidifier and its control method

[0001] The present invention relates to a dehumidifier and a control method thereof.

[0002] A dehumidifier is a type of home appliance that lowers the humidity in a desired space by sucking in air from a desired space, removing the moisture contained in the air, and discharging the dehumidified air into the desired space.

[0003] Conventional dehumidifiers remove moisture by sucking in air from a desired space and passing it through a heat exchanger consisting of a condenser and an evaporator, thereby exchanging heat between the refrigerant flowing through the condenser and the air passing through the evaporator.

[0004] The evaporator absorbs heat from the surrounding air by evaporating the liquid refrigerant, and the condenser releases heat by condensing the gaseous refrigerant, thereby transferring heat to the surrounding air. In other words, the air passing through the heat exchanger exchanges heat with the refrigerant as it passes through the evaporator, thereby lowering its humidity, and the air with reduced humidity exchanges heat with the refrigerant as it passes through the condenser, thereby undergoing a drying process.

[0005] The dried air passing through the above heat exchanger is discharged to the desired space, thereby lowering the humidity in the air of the desired space.

[0006] These conventional dehumidifiers had the problem of causing discomfort to the user due to the temperature of the discharged air rising.

[0007] Information on prior literature is as follows.

[0008] (1) First patent document

[0009] Republic of Korea Patent Publication No. 10-2023-0083058 (Publication date: June 9, 2023)

[0010] Title of the invention: Air circulation system including membrane dehumidification module

[0011] (2) Second patent document

[0012] Republic of Korea Patent No. 10-1328447 (Registration date: November 6, 2013)

[0013] Title of the invention: Dehumidifying duct using a hollow fiber membrane module

[0014] (3) Third patent document

[0015] Republic of Korea Patent No. 10-1980257 (Registration date: May 14, 2019)

[0016] Title of the invention: Hybrid dehumidifying air conditioning device including a separation membrane

[0017] (4) Patent Document No. 4

[0018] Republic of Korea Patent No. 10-1980284 (Registration date: May 14, 2019)

[0019] Title of the invention: Dehumidification system using a membrane installed in a duct pipe

[0020] The purpose of the present invention is to provide a dehumidifier and a control method thereof that can achieve constant temperature dehumidification without increasing the temperature of an indoor space by selectively separating moisture in the air through a dehumidification module including a membrane without operating a refrigeration cycle.

[0021] The present invention aims to provide a dehumidifier and a control method thereof, which can shorten the dehumidification time by allowing dehumidification to be performed by passing through a dehumidification module without requiring time for stabilization of the refrigeration cycle.

[0022] The purpose of the present invention is to provide a dehumidifier and a control method thereof that can easily perform separation and condensation of moisture by generating a first suction flow of air to remove moisture and a second suction flow of air to perform heat exchange.

[0023] The purpose of the present invention is to provide a dehumidifier and a control method thereof, which are equipped with a bidirectional suction fan so that the first suction flow and the second suction flow can be sucked into the dehumidifier in opposite directions.

[0024] The present invention aims to provide a dehumidifier and a control method thereof, which can improve moisture separation performance by configuring a first direction of intake flow of air to remove moisture and a second direction of flow of separated water vapor to be perpendicular to each other.

[0025] The purpose of the present invention is to provide a dehumidifier and a control method thereof that can move water vapor in air passing through a dehumidifying module into the interior of a membrane by generating a pressure difference between the inside and the outside of the membrane using a vacuum pump.

[0026] The purpose of the present invention is to provide a dehumidifier and a control method thereof that facilitates the removal of condensed moisture by introducing water vapor separated from a dehumidifying module into a heat exchanger via a vacuum pump and exchanging heat with indoor air in the heat exchanger.

[0027] The purpose of the present invention is to provide a dehumidifier and a control method thereof, in which a first part in which a fan for generating air flow is arranged is arranged in an upper space of the dehumidifier, so that air intake from an indoor space can be easily achieved.

[0028] The present invention aims to provide a dehumidifier and a control method thereof, in which a dehumidifying module for separating moisture in the air is arranged in the first part, so that the separated moisture vapor falls in the direction of gravity, thereby facilitating the collection of moisture vapor and enabling a compact configuration of a pipe connected to a vacuum pump.

[0029] The present invention aims to provide a dehumidifier and a control method thereof, in which a heat exchanger is arranged in the first part, so that a main flow of indoor air requiring dehumidification and a sub flow for the heat exchanger can easily be generated in two directions using one fan.

[0030] The present invention aims to provide a dehumidifier and a control method thereof, in which the first part is divided by a partition wall and a dehumidification module and a heat exchanger are arranged in the divided area, thereby easily generating a main flow in which a relatively large amount of suction is performed and a sub flow in which a small amount of suction is performed, and preventing pressure loss.

[0031] The present invention aims to provide a dehumidifier and a control method thereof, in which a vacuum pump for sucking water vapor separated from a dehumidifying module is disposed in a second part, and the second part forms a lower space of the dehumidifier, so that the separated water vapor can be easily sucked into the vacuum pump by the effect of gravity.

[0032] The present invention aims to provide a dehumidifier and a control method thereof, in which the vacuum pump is arranged in the second part at the lower side of the heat exchanger, so that high-temperature steam passing through the vacuum pump is quickly transferred to the heat exchanger, noise generated from the vacuum pump is easily blocked, and accessibility for maintenance is effective.

[0033] The present invention aims to provide a dehumidifier and a control method thereof in which a drain tank for storing condensed water from a heat exchanger is arranged in the second part, thereby facilitating the flow of condensed water in the direction of gravity.

[0034] The present invention aims to provide a dehumidifier and a control method thereof, in which a water supply tank for supplying water to a dehumidifying module is arranged in the second part, thereby efficiently utilizing the upper space of the dehumidifier and improving the user's accessibility to the water supply tank.

[0035] The purpose of the present invention is to provide a dehumidifier and a control method thereof capable of setting the dehumidification intensity according to a user's selection.

[0036] The purpose of the present invention is to provide a dehumidifier and a control method thereof in which dehumidification operation is automatically performed based on a set target humidity.

[0037] The purpose of the present invention is to provide a dehumidifier and a control method thereof in which dehumidification operation is automatically performed based on absolute humidity.

[0038] A dehumidifier according to an embodiment of the present invention may include a main body having a suction part and a fan, a dehumidifying module including a dehumidifying member that separates moisture in air sucked in from the suction part by driving the fan, and a vacuum pump that provides a driving force for discharging moisture separated from the dehumidifying module to the outside of the dehumidifying module.

[0039] The dehumidifier may be fluidly connected to the vacuum pump and may include a heat exchanger that condenses the separated moisture, a drain tank that stores the water condensed in the heat exchanger, and a control unit that differently controls the output of the vacuum pump depending on the operation mode.

[0040] The above control unit can control the rotation speed of the fan differently depending on the driving mode.

[0041] The above control unit can compare the set target humidity with the reference humidity and control the output of the vacuum pump according to the comparison result.

[0042] The above target humidity may include a humidity value input by the user.

[0043] The above reference humidity may include a relative humidity value corresponding to a certain percentage of the indoor relative humidity.

[0044] The above reference humidity may include an absolute humidity value corresponding to a certain percentage of the indoor absolute humidity.

[0045] The above standard humidity may include a first standard humidity and a second standard humidity that is higher than the first standard humidity.

[0046] The above control unit can set the output of the vacuum pump to the first output when the target humidity is less than the first reference humidity.

[0047] The above control unit can set the output of the vacuum pump to a second output that is lower than the first output when the target humidity is equal to or higher than the first reference humidity and less than the second reference humidity.

[0048] The above control unit can set the output of the vacuum pump to a third output that is lower than the second output when the target humidity is higher than the second reference humidity and lower than the current indoor humidity.

[0049] The above control unit can stop the operation of the vacuum pump if the target humidity is higher than the indoor humidity.

[0050] A control method of a dehumidifier according to an embodiment of the present invention includes, when power is supplied, a step of determining whether a tank for storing water is mounted; a step of determining a water level of the tank if the tank is mounted; a step of receiving an operation mode of the dehumidifier if the water level of the tank is lower than a reference water level; and a step of driving a vacuum pump and a fan based on the input operation mode, wherein the output of the vacuum pump can be controlled differently depending on the operation mode.

[0051] According to an embodiment of the present invention, by selectively separating moisture in the air through a dehumidification module including a membrane without driving a refrigeration cycle, constant temperature dehumidification can be easily implemented without increasing the temperature of an indoor space.

[0052] According to an embodiment of the present invention, dehumidification can be performed by passing through a dehumidification module without requiring time for stabilization of the refrigeration cycle, so that the dehumidification time can be shortened.

[0053] According to an embodiment of the present invention, separation and condensation of moisture can be easily performed by generating a first suction flow of air to remove moisture and a second suction flow of air to perform heat exchange.

[0054] According to an embodiment of the present invention, a two-way suction fan is provided so that the first suction flow and the second suction flow can be easily sucked into the dehumidifier in opposite directions.

[0055] According to an embodiment of the present invention, the first direction of the intake flow of air to remove moisture and the second direction of the flow of water vapor to be separated are configured to be perpendicular to each other, thereby improving moisture separation performance.

[0056] According to an embodiment of the present invention, by generating a pressure difference between the inside and outside of the membrane using a vacuum pump, water vapor in the air passing through the dehumidification module can be moved to the inside of the membrane.

[0057] According to an embodiment of the present invention, water vapor separated from a dehumidifying module is introduced into a heat exchanger via a vacuum pump and exchanges heat with indoor air in the heat exchanger, thereby facilitating the removal of condensed moisture.

[0058] According to an embodiment of the present invention, a first part in which a fan for generating air flow is arranged is arranged in the upper space of the dehumidifier, so that air intake in the indoor space can be easily achieved.

[0059] According to an embodiment of the present invention, a dehumidifying module for separating moisture in the air is arranged in the first part, so that the separated moisture vapor falls in the direction of gravity, thereby facilitating the collection of moisture vapor and enabling a compact configuration of a pipe connected to a vacuum pump.

[0060] According to an embodiment of the present invention, since the heat exchanger is arranged in the first part, a main flow of indoor air requiring dehumidification and a sub flow for the heat exchanger can be easily generated in two directions using one fan.

[0061] According to an embodiment of the present invention, the first part is divided by a partition wall, and a dehumidification module and a heat exchanger are arranged in the divided area, so that a main flow in which a relatively large amount of suction is performed and a sub flow in which a small amount of suction is performed can be easily generated, and pressure loss can be prevented.

[0062] According to an embodiment of the present invention, a vacuum pump for sucking water vapor separated from a dehumidifying module is disposed in a second part, and the second part forms a lower space of the dehumidifier, so that the separated water vapor can be easily sucked into the vacuum pump by the effect of gravity.

[0063] According to an embodiment of the present invention, the vacuum pump is arranged in the second part at the lower side of the heat exchanger, so that high-temperature steam passing through the vacuum pump is quickly transferred to the heat exchanger, noise generated from the vacuum pump is easily blocked, and accessibility for maintenance is also effective.

[0064] According to an embodiment of the present invention, a drain tank for storing condensed water from a heat exchanger is arranged in the second part, thereby facilitating the flow of condensed water in the direction of gravity.

[0065] According to an embodiment of the present invention, a water supply tank for supplying water to the dehumidifying module is arranged in the second part, thereby enabling efficient use of the upper space of the dehumidifier and improving the user's accessibility to the water supply tank.

[0066] According to an embodiment of the present invention, since the output of the vacuum pump is controlled according to the set operation mode, there is an advantage in that indoor space can be dehumidified quickly and dehumidified with low noise.

[0067] According to an embodiment of the present invention, the output of the vacuum pump is automatically adjusted by comparing the indoor humidity and the target humidity, so there is an advantage in that the dehumidification time is shortened and the convenience of use is improved.

[0068] According to an embodiment of the present invention, since dehumidification operation is performed based on absolute humidity rather than relative humidity, there is an advantage in that a more comfortable indoor environment can be created without considering the amount of change in relative humidity even if a temperature change occurs due to external conditions.

[0069] Figure 1 is a perspective view showing the appearance of a dehumidifier according to an embodiment of the present invention.

[0070] Figure 2 is a rear perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention.

[0071] Figure 3 is a front perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention.

[0072] Figure 4 is a left-side perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention.

[0073] Figure 5 is a right-side perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention.

[0074] Figure 6 is an exploded perspective view of a dehumidifier according to an embodiment of the present invention.

[0075] Figure 7 is a cross-sectional view taken along line 7-7 of Figure 1.

[0076] Figure 8 is a top perspective view showing the configuration of a dehumidifying module according to an embodiment of the present invention.

[0077] Figure 9 is a bottom perspective view showing the configuration of a dehumidifying module according to an embodiment of the present invention.

[0078] Figure 10 is an exploded perspective view of a dehumidifying module according to an embodiment of the present invention.

[0079] Fig. 11 is a drawing showing the configuration of a dehumidifying member according to an embodiment of the present invention.

[0080] Figure 12 is a drawing showing how the first suction flow and discharge flow are generated in a dehumidifier according to an embodiment of the present invention.

[0081] Fig. 13 is a top perspective view showing the configuration of the first part and the second part in a dehumidifier according to an embodiment of the present invention.

[0082] Fig. 14 is a perspective view showing the internal configuration of a dehumidifier with the dehumidifying module removed according to an embodiment of the present invention.

[0083] FIG. 15 is a bottom perspective view showing the configuration of the first part and the second part in a dehumidifier according to an embodiment of the present invention.

[0084] Fig. 16 is a drawing showing a part of the configuration of a dehumidifier according to an embodiment of the present invention.

[0085] Fig. 17 is a drawing showing a portion of the discharge flow of a fan according to an embodiment of the present invention flowing into an inlet guide.

[0086] Fig. 18 is a drawing showing the configuration of a display unit according to an embodiment of the present invention.

[0087] Figure 19 is a flowchart showing a basic operation control method of a dehumidifier according to an embodiment of the present invention.

[0088] Figure 20 is a flowchart showing an inverter operation control method of a dehumidifier according to an embodiment of the present invention.

[0089] Figure 21 is a flowchart showing an absolute humidity operation control method of a dehumidifier according to an embodiment of the present invention.

[0090] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components will be given the same reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, detailed descriptions of related known structures or functions will be omitted if they are deemed to hinder understanding of the embodiments of the present invention.

[0091] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of embodiments of the present invention. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0092] FIG. 1 is a perspective view showing the appearance of a dehumidifier according to an embodiment of the present invention, FIG. 2 is a rear perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention, FIG. 3 is a front perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention, FIG. 4 is a left-side perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention, and FIG. 5 is a right-side perspective view showing the configuration of a dehumidifier according to an embodiment of the present invention.

[0093] Referring to FIGS. 1 to 5, a dehumidifier (10) according to an embodiment of the present invention may have a three-dimensional shape in which the height in the vertical direction is greater than the width in the front-back direction.

[0094] Define the direction. In Fig. 1, the surface where the first suction part (110) is formed is defined as the front surface, in Fig. 2, the surface where the second suction part (115) is formed is defined as the rear surface, and the surface where the discharge part (106) is formed is defined as the upper surface.

[0095] The above dehumidifier (10) may include a main body (100) forming an exterior. The main body (100) may accommodate a number of components for sucking in air, removing moisture from the sucked air, and discharging the dehumidified air.

[0096] The above body (100) may include a front portion (101), a rear portion (102), a first side portion (103), a second side portion (104), an upper portion (105), and a bottom portion. The bottom portion may be defined by a base (210).

[0097] The front portion (101) may include a first suction portion (110a) for sucking air. A first suction grill (110) may be provided in the first suction portion (110a). Air in an indoor space to be dehumidified may be sucked in through the first suction portion (110a). The air flow sucked in through the first suction portion (110a) may be referred to as "first suction flow (first flow)" or "main flow."

[0098] The rear part (102) can be arranged to face the front part (101).

[0099] The rear portion (102) may include a second suction portion (115a) for sucking air. A second suction grill (115) may be provided in the second suction portion (115a). Through the second suction portion (115a), air in the indoor space to be introduced into the heat exchanger (160) may be sucked in. The air flow sucked in the second suction portion (115a) may be referred to as "second suction flow (second flow)" or "sub flow."

[0100] The above first side portion (103) connects one side of the front portion (101) and the rear portion (102) and can form one side of the dehumidifier.

[0101] The second side portion (104) may connect the other side of the rear portion (102) to the front portion (101) and form the other side of the dehumidifier. The second side portion (104) may be arranged to face the first side portion (103).

[0102] The upper surface (105) may form a discharge portion (106) that discharges air from the dehumidifier (10). The discharge portion (106) may be provided with a discharge vane (107) that controls the opening or closing of the discharge portion (106).

[0103] The upper surface (105) may include a display unit (108) that outputs operating information of the dehumidifier (10). The display unit (108) may be provided with an input unit for inputting an operating command.

[0104] The display portion (108) may be positioned adjacent to the front portion (101) of the upper surface portion (105), and the discharge portion (106) may be formed adjacent to the rear portion (102) of the upper surface portion (105).

[0105] When a user approaches the dehumidifier (10), the user can approach in a direction closer to the front part (101) to easily operate the display part (108). In addition, since the tank (250, 260) provided in the dehumidifier (10) is provided to be detachable from the front part (101), the user's accessibility and convenience of operation can be improved.

[0106] A tank (250, 260) for storing water may be provided in a mountable or detachable manner at the bottom of the above dehumidifier (10).

[0107] The above tank (250, 260) may include a drain tank (250) in which condensate is stored after water vapor separated from the dehumidification module (300) is condensed in the heat exchanger (160). The drain tank (250) may include a first handle (258) that a user can grip.

[0108] The above tank (250, 260) may include a water supply tank (260) that stores water to be supplied to the dehumidification module (300) in order to improve the moisture separation characteristics in the dehumidification module (300). The water supply tank (260) may include a second handle (268) that a user can hold.

[0109] The dehumidifier (10) may further include an auxiliary display unit (280) that provides information regarding whether the tank (250, 260) is installed. The auxiliary display unit (280) may be provided at the front of the first partition wall (121). The auxiliary display unit (280) may provide a notification regarding the emptying or supply of water in the tank (250, 260) based on the water level of the tank (250, 260).

[0110] When the above tank (250, 260) is mounted, the auxiliary display unit (280) may be provided at a location shielded by the tank (250, 260). For example, the tank (250, 260) is made of a transparent material, so that even when the tank (250, 260) is mounted, information output from the auxiliary display unit (280) can be viewed from the outside.

[0111] The lower surface of the dehumidifier (10) is provided with a base (210), and the base (210) can function as a support plate forming a machine room of the dehumidifier (10). A plurality of legs (109) placed on the ground can be provided on the lower side of the base (210).

[0112] The above dehumidifier (10) may include a first part (A) forming an upper portion and a second part (B) forming a lower portion. The first part (A) may be referred to as an “upper part” and the second part (B) may be referred to as a “lower part.”

[0113] The interior of the main body (100) may include a first partition wall (121) that divides a first space (upper space) in which components constituting the first part (A) are installed, and a second space (lower space) in which components constituting the second part (B) are installed.

[0114] The components constituting the above first part (A) may include a dehumidification module (300), a fan (150), and a heat exchanger (160).

[0115] The components constituting the first part (A) may further include a valve device (170) and a supply pipe (172) that supply at least a portion of the air discharged from the fan (150) to the dehumidifying module (300).

[0116] The components constituting the second part (B) may include a vacuum pump (230) and a tank (250, 260). The tank (250, 260) may include a drain tank (250) and a water supply tank (260).

[0117] The vacuum pump (230) may be aligned to the lower side of the fan (150) and the heat exchanger (160), and the tank (250, 260) may be aligned to the lower side of the dehumidification module (300).

[0118] The components constituting the first part (A) or the second part (B) may include a water pump (180) and a water supply connection pipe (185) connected to the water supply tank (260) to transfer water from the water supply tank (260) to the dehumidification module (300).

[0119] The above dehumidification module (300) can be installed on the upper surface of the first bulkhead (121).

[0120] The dehumidifying module (300) may be placed inside the first suction portion (110a). Accordingly, the dehumidifying module (300) may be placed so that air introduced into the first part (A) through the first suction portion (110a) passes therethrough.

[0121] The above first part (A) may further include a second partition wall (123) that divides the installation space of the dehumidification module (300) and the installation space of the fan (150). The second partition wall (123) may separate the first suction flow passing through the dehumidification module (300) from the first suction part (110a) and the second suction flow passing through the heat exchanger (160) from the second suction part (115a).

[0122] The flow rates of the first suction flow and the second suction flow can be formed differently. Since the first suction flow and the second suction flow are flow-separated by the second partition wall (123), flow loss caused by the pressure difference between the mutual flows can be prevented.

[0123] The flow rate of the first suction flow may be formed to be greater than that of the second suction flow. For example, the flow rate of the second suction flow may be formed at about 60% of the flow rate of the first suction flow. For example, the first suction flow rate may be generated at about 170 CMH, and the second suction flow rate may be generated at about 100 CMH.

[0124] The above first suction flow is a flow of air to be dehumidified and requires a large amount, but the above second suction flow may require a relatively small amount to condense moisture in the heat exchanger (160).

[0125] The above fan (150) can be controlled so that the first suction side, where the first suction flow is sucked, has a greater suction flow rate than the second suction side, where the second suction flow is sucked.

[0126] The dehumidification module (300) may be placed in the space between the second partition wall (123) and the first suction unit (110a). The space between the second partition wall (123) and the first suction unit (110a) may be called a “dehumidification module space.”

[0127] The fan (150) and the heat exchanger (160) may be placed in the space between the second partition wall (123) and the second suction part (115a). The space between the second partition wall (123) and the second suction part (115a) may be called a “fan space” or a “heat exchanger space.”

[0128] The air sucked through the first suction portion (110a) can be separated from moisture after passing through the dehumidifying module (300). The air from which moisture has been separated can be sucked into the suction side of the fan (150) after passing through the second partition wall (123).

[0129] The fan (150) may include a bidirectional suction fan that sucks in air from both directions and discharges it. For example, the fan (150) may include a bidirectional centrifugal fan that sucks in air in the axial direction on both sides and discharges it in the radial direction.

[0130] The suction side of the fan (150) through which air passing through the dehumidifying module (300) is sucked in can be referred to as the “first suction side.” That is, the first suction flow can be understood as air flow flowing from the first suction portion (110a) to the first suction side of the fan (150).

[0131] The above dehumidification module (300) can be detachably mounted inside the main body (100).

[0132] The above dehumidifier (10) may further include a module mounting guide (125) that guides mounting of the dehumidifying module (300). The module mounting guide (125) may constitute a part of the first part (A).

[0133] The above module mounting guide (125) is provided on the inside of the main body (100) and can be connected to the second partition wall (123). The module mounting guide (125) can extend from the second partition wall (123) in a direction toward the first suction portion (110a).

[0134] The above module mounting guides (125) are provided in multiple numbers, and the multiple module mounting guides (125) can be spaced apart from each other. The dehumidifying module (300) can be mounted in the space between the multiple module mounting guides (125).

[0135] The above plurality of module mounting guides (125) can be arranged adjacent to or in contact with both sides of the dehumidifying module (300).

[0136] The heat exchanger (160) may be placed inside the second suction portion (115a). Accordingly, the heat exchanger (160) may be placed so that air introduced into the first part (A) through the second suction portion (115a) passes therethrough.

[0137] The heat exchanger (160) may be placed between the second suction part (115a) and the fan (150). Accordingly, the air sucked in through the second suction part (115a) may pass through the heat exchanger (160) and then be sucked into the suction side of the fan (150). At this time, the air may condense the water vapor separated from the dehumidification module (300) while exchanging heat with the water vapor.

[0138] The suction side of the fan (150) into which air passing through the heat exchanger (160) is sucked can be called the “second suction side.” That is, the second suction flow can be understood as air flow flowing from the second suction part (115a) to the second suction side of the fan (150).

[0139] The above first suction flow and the above second suction flow can be sucked in the axial direction of the fan (150) and discharged in the radial direction, and then discharged through the discharge portion (106) provided on the upper surface (105) of the dehumidifier (10).

[0140] The above second part (B) may be provided on the lower side of the first bulkhead (121).

[0141] The second part (B) may further include a third partition wall (126) that divides the installation space of the vacuum pump (230) and the installation space of the tank (250, 260). The third partition wall (126) may divide the installation space of the vacuum pump (230) and the installation space of the tank (250, 260) in the front-rear direction.

[0142] By the third partition wall (126), the noise generated from the vacuum pump (230) can be prevented from being transmitted to the front side of the dehumidifier (10), i.e., the installation space of the tank (250, 260) that users frequently access.

[0143] The above third bulkhead (126) can easily provide an installation area for a sensor (256, 266) for detecting the water level of the tank (250, 260) and a transmission path for condensate transferred to the drain tank (250).

[0144] The third bulkhead (126) is connected to the base (210) forming the lower surface of the dehumidifier (10) and may be configured to protrude upward from the base (210).

[0145] The above second part (B) may further include a fourth partition wall (127, see FIG. 13) that divides the installation space of the tank (250, 260) into an installation space of the drain tank (250) and an installation space of the water supply tank (260). The fourth partition wall (127) may divide the installation space of the drain tank (250) and the installation space of the water supply tank (260) in the left and right directions.

[0146] The above tank (250, 260) can be detachably mounted on the dehumidifier (10).

[0147] The second part (B) may include a tank mounting guide (128) provided on both left and right sides of the base (210) to guide mounting of the tank (250, 260).

[0148] The above tank mounting guide (128) may include a first mounting guide (128a) that guides the mounting of the drain tank (250). The first mounting guide (128a) may be connected to the base (210) and configured to protrude upward from the base (210).

[0149] The above drain tank (250) can be detachably mounted in the space between the fourth bulkhead (127) and the first mounting guide (128a). The first mounting guide (128a) can be positioned adjacent to or in contact with one side of the drain tank (250).

[0150] The above tank mounting guide (128) may include a second mounting guide (128b) that guides the mounting of the water supply tank (260). The second mounting guide (128b) may be connected to the base (210) and configured to protrude upward from the base (210).

[0151] The above water supply tank (260) can be detachably mounted in the space between the fourth bulkhead (127) and the second mounting guide (128b). The second mounting guide (128b) can be positioned adjacent to or in contact with one side of the water supply tank (260).

[0152] The above base (210) may include a rail (215) that guides the mounting of the tank (250, 260). The rail (215) may be configured to protrude from the base (210) and extend in the direction in which the tank (250, 260) is mounted, i.e., in the front-back direction. The rail (215) may be provided on the lower side of the drain tank (250) and the lower side of the water supply tank (260), respectively.

[0153] The above plurality of rails (215) can be inserted into a rail groove formed on the bottom surface of the drain tank (250) and a rail groove formed on the bottom surface of the water supply tank (260).

[0154] The above dehumidifier (10) may include an air supply device (170, 172) that supplies air to the dehumidification module (300) in order to improve the dehumidification performance in the dehumidification module (300). The air supply device (170, 172) may be configured to supply at least a portion of the air discharged from the fan (150) to the dehumidification module (300).

[0155] The above air supply device (170, 172) may include a valve device (170) arranged on the discharge side of the fan (150). For example, the valve device (170) may be arranged on the second partition wall (123). In particular, the valve device (170) may be arranged at a position adjacent to the upper end of the second partition wall (123) adjacent to the discharge side of the fan (150).

[0156] At least a portion of the air discharged from the fan (150) may be introduced into the valve device (170) through the guide hole. The guide hole may be formed in the second partition wall (123).

[0157] The above valve device (170) can be installed in the above guide hole.

[0158] The above air supply device (170, 172) is connected to the valve device (170) and may further include a supply pipe (172) that supplies air passing through the valve device (170) to the dehumidifying module (300). The supply pipe (172) may be connected to a connection port of the dehumidifying module (300).

[0159] The above dehumidifier (10) may include a connection pipe (235) through which water vapor separated from the dehumidifying module (300) flows and a vacuum pump (230) connected to the connection pipe (235). The connection pipe (235) may be referred to as a “water vapor connection pipe.”

[0160] The above connecting pipe (235) is connected to the dehumidifying module (300) and includes a first connecting pipe connected to the suction side of the vacuum pump (230), and water vapor separated from the dehumidifying module (300) can be sucked into the vacuum pump (230) through the first connecting pipe.

[0161] The first connecting pipe extends from the bottom surface of the first partition wall (121), and a port communication hole (121c, see FIG. 6) connected to the dehumidifying module (300) may be formed in the first partition wall (121).

[0162] The above connecting pipe (235) is connected to the discharge side of the vacuum pump (230) and includes a second connecting pipe connected to the heat exchanger (160), and high-temperature steam discharged from the vacuum pump (230) can be introduced into the heat exchanger (160) through the second connecting pipe.

[0163] The water vapor passing through the vacuum pump (230) may have a high temperature, for example, a temperature of about 45 to 50°C, while being compressed by the vacuum pump (230).

[0164] The water vapor passing through the vacuum pump (230) can form a flow rate less than about 5% of the total suction flow rate of the system, i.e., the flow rate sucked through the first suction unit (110a). Therefore, the water vapor can be sufficiently converted into condensate through heat exchange with the air sucked through the second suction unit (115a).

[0165] The second connecting pipe may be connected to the inlet port (121a, see FIG. 6) of the first bulkhead (121). The inlet port (121a) may be coupled to the inlet of the heat exchanger (160).

[0166] The above heat exchanger (160) may be configured to exchange heat between air sucked in from the second suction portion (115a) and steam introduced through the second connecting pipe. For example, the second connecting pipe may be connected to the lower end of the heat exchanger (160).

[0167] The above dehumidifier (10) further includes a condensate pipe (236) through which condensed water from the heat exchanger (160) flows, and the condensate pipe (236) can be connected to the discharge side of the heat exchanger (160). For example, the condensate pipe (236) can be connected to the lower end of the heat exchanger (160).

[0168] The above condensate pipe (236) is connected to the discharge port (121b, see FIG. 6) of the first bulkhead (121) and can extend from the bottom surface of the first bulkhead (121).

[0169] The above condensate pipe (236) is provided in the second part (B) and can be arranged to communicate with the space where the drain tank (260) is installed.

[0170] The above dehumidifier (10) may further include a water pump (180) that is fluidly connected to the water supply tank (260) and provides driving force to supply water from the water supply tank (260) to the dehumidification module (300).

[0171] For example, the water pump (180) may be placed in the first part (A) and mounted on the upper side of the first bulkhead (121). However, this is not limited to the first part (A), and the water pump (180) may also be placed in the second part (B).

[0172] The above dehumidifier (10) is connected to the water pump (180) and may further include a water supply connection pipe (185) that transfers water from the water supply tank (260) to the dehumidification module (300).

[0173] The above water supply connection pipe (185) is connected to the tank duct (263) of the water supply tank (260) and may include a first connection pipe (185a) that transfers water from the water supply tank (260) to the water pump (180). The first connection pipe (185a) may pass through the first bulkhead (121) and be connected to the water pump (180).

[0174] The above first bulkhead (121) may include a water supply through hole (121d, see FIG. 6) through which the first connecting pipe (185a) passes.

[0175] The above water supply connection pipe (185) is connected to the water pump (180) and may include a second connection pipe (185b) extending to the dehumidification module (300). The second connection pipe (185b) may be connected to the water supply port of the dehumidification module (300).

[0176] FIG. 6 is an exploded perspective view of a dehumidifier according to an embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 1.

[0177] Referring to FIG. 6, a dehumidifier (10) according to an embodiment of the present invention may include a main body (100) that accommodates a plurality of components for dehumidifying air.

[0178] The above body (100) may include the front part (101), the rear part (102), two side parts (103, 104), and the upper part (105).

[0179] The upper surface (105) may be composed of a detachable plate. The upper surface (105) may be coupled to the open upper portion of the main body (100).

[0180] The upper surface (105) may include a discharge portion (106) for discharging air, a discharge vane (107) for opening and closing the discharge portion (106), and a display portion (108).

[0181] A sealing member (105a) may be provided between the open upper portion of the main body (100) and the upper surface (105) to prevent air leakage.

[0182] The above body (100) may include a first suction portion (110a) through which a first suction flow is suctioned. The first suction portion (110a) is formed by penetrating at least a portion of the front portion (101), and a first suction grill (110) may be mounted on the first suction portion (110a).

[0183] The above body (100) may include a second suction portion (115a) through which a second suction flow is suctioned. The second suction portion (115a) is formed by penetrating at least a portion of the rear portion (102), and a second suction grill (115) may be mounted on the second suction portion (115a).

[0184] Between the first suction part (110a) and the second suction part (115a), a dehumidification module (300), a fan (150), and a heat exchanger (160) can be sequentially arranged in a direction from the first suction part (110a) toward the second suction part (115a).

[0185] A communication portion (121a, 121b, 121c) through which steam or condensate passes may be formed in the first partition wall (121) that divides the dehumidifier (10) into a first part (A) and a second part (B). The communication portion (121a, 121b, 121c) may include a port communication hole (121c) that guides steam separated from the dehumidifying module (300) to flow to the vacuum pump (230).

[0186] The above-mentioned communication portion (121a, 121b, 121c) may include an inlet port (121a) that guides high-temperature steam passing through the vacuum pump (230) to flow to the heat exchanger (160).

[0187] The above-mentioned communication portion (121a, 121b, 121c) may include a discharge port (121b) that guides the condensate condensed in the heat exchanger (160) to flow to the drain tank (250).

[0188] The above dehumidifier (10) may include a second partition wall (123) extending upward from the first partition wall (121) and dividing the internal space of the first part (A) into a space where the dehumidification module (300) is located and a space where the fan (150) and the heat exchanger (160) are located.

[0189] The second partition wall (123) is formed on the outlet side of the dehumidifying module (300) based on the first suction flow, and can form a fan suction part (123a) that guides air passing through the dehumidifying module (300) to the suction side of the fan (150).

[0190] The above fan suction part (123a) may include a suction guide (bell mouth) formed in a round shape so that air can be smoothly sucked in the axial direction of the fan (150).

[0191] The above dehumidifier (10) may include two module mounting guides (125) that protrude from the second partition wall (123) and guide the mounting of the dehumidifying module (300). The module mounting guides (125) may protrude from the second partition wall (123) in a direction toward the first suction portion (110a).

[0192] The two module mounting guides (125) above can be arranged on both sides of the fan suction portion (123a). The front-rear width of the dehumidifying module (300) supported by the two module mounting guides (125) can be formed to be larger than the diameter of the fan suction portion (123a). Accordingly, the dehumidifying module (300) can cover the fan suction portion (123a).

[0193] The above first suction flow passes through the second partition wall (123) via the fan suction portion (123a) and can be sucked into the first suction side of the fan (150).

[0194] The second suction flow sucked through the second suction portion (115a) can be sucked into the second suction side of the fan (150) after passing through the heat exchanger (160).

[0195] The dehumidifier (10) may further include a plate (124) coupled to the second partition wall (123). For example, the plate (124) may be coupled to the upper portion of the second partition wall (123) and may protrude in a direction toward the front portion (101).

[0196] The above plate (124) may be arranged to divide the space between the upper surface (105) and the upper end of the dehumidifying module (300). By driving the vacuum pump (230), vacuum pressure is applied to the dehumidifying module (300), and the plate (124) can block the vacuum pressure from applying to the upper surface (105).

[0197] The above body (100) may include an opening for forming an inlet space in which a tank (250, 260) is mounted. The opening is formed from the front portion (101) to both side portions (103, 104), and may be configured to open in the direction in which the tank (250, 260) is withdrawn or introduced.

[0198] Referring to Fig. 7, the first part (A) may include a fan motor (155) for driving the fan (150). The fan motor (155) may be coupled to a central hub of the fan (150). The shaft of the fan motor (155) may be coupled to the hub (151) in an axial direction (front-backward direction).

[0199] The center line (ℓ1) passing through the center of the fan motor (155) in the front-back direction can pass through the dehumidifying module (300), the fan suction part (123a), and the heat exchanger (160). For example, the center line (ℓ1) can pass through the center of the dehumidifying module (300), the center of the fan suction part (123a), and the center of the heat exchanger (160).

[0200] The dehumidification module (300) can be installed on the first bulkhead (121).

[0201] The above dehumidification module (300) may include a dehumidification member (320) that performs selective separation of moisture.

[0202] The above dehumidifying module (300) may further include a fixing member (330) that supports an end of the dehumidifying member (320) and a first cap (340) that fills the fixing member (330).

[0203] The above dehumidification module (300) may further include a second cap (350) covering the first cap (340).

[0204] The above-mentioned fixing member (330), the first cap (340), and the second cap (350) may be provided on each side of the dehumidifying member (320). That is, the above-mentioned fixing member (330), the first cap (340), and the second cap (350) may be provided on the upper and lower sides of the dehumidifying member (320), respectively.

[0205] The bottom surface of the above dehumidification module (300) can be coupled to the first bulkhead (121).

[0206] The dehumidifying module (300) may include a connection port (360) that protrudes from the second cap (350) in a direction toward the first partition wall (121). The connection port (360) may be coupled to a protrusion (122) of the first partition wall (121). The protrusion (122) may protrude downward from the bottom surface of the first partition wall (121).

[0207] For example, the connection port (360) can be inserted into the inside of the protrusion (122).

[0208] A sealing member (365) may be provided on the outer surface of the connection port (360) to seal the space between the protrusion (122) and the connection port (360). By the sealing member (365), the connection port (360) and the protrusion (122) can be firmly connected.

[0209] The above sealing member (365) may be provided in multiple pieces.

[0210] A cap hole (355) is formed in the second cap (350), and the cap hole (355) can be extended to the connection port (360). Moisture (water vapor) separated from the dehumidifying module (300) can be discharged to the outside of the dehumidifying module (300) through the cap hole (355).

[0211] A connecting pipe (235) that guides the flow of steam, i.e., a first connecting pipe, may be connected to the protrusion (122). The first connecting pipe may extend from the protrusion (122) to the vacuum pump (230) and be connected to the vacuum pump (230).

[0212] The above first connecting pipe can be connected to the connecting port (360) inside the above protrusion (122).

[0213] FIG. 8 is an upper perspective view showing the configuration of a dehumidifying module according to an embodiment of the present invention, FIG. 9 is a lower perspective view showing the configuration of a dehumidifying module according to an embodiment of the present invention, FIG. 10 is an exploded perspective view of a dehumidifying module according to an embodiment of the present invention, and FIG. 11 is a drawing showing the configuration of a dehumidifying member according to an embodiment of the present invention.

[0214] Referring to FIG. 7 and FIG. 8 to FIG. 11 together, the dehumidifying module (300) according to the embodiment of the present invention can be detachably mounted on the dehumidifier (10).

[0215] The above dehumidification module (300) may include a dehumidification member (320) capable of selectively separating moisture from the inhaled air.

[0216] The above dehumidifying member (320) may include a membrane.

[0217] In detail, the dehumidifying member (320) may include a polymer membrane fiber (321) having a hollow fiber structure with excellent selectivity for moisture. The polymer membrane fiber (321) may be cut to a predetermined length and used. The polymer membrane fiber (321) may be referred to as a "hollow fiber membrane."

[0218] The above polymer film fiber (321) may be configured to have a diameter of, for example, about 400 to 420 μm.

[0219] The above polymer membrane fiber (321) can be provided in multiple strands.

[0220] The above dehumidifying member (320) may further include a packing member (323) that surrounds the plurality of polymer film fibers (321) to fix the polymer film fibers (321) composed of the plurality of strands.

[0221] The plurality of polymer film fibers (321) can be formed into a bundle by the above packing member (323). The bundle of dehumidifying members (320) can form a single dehumidifying member.

[0222] The above-mentioned packing member (323) is composed of a resin material, has strong water resistance, and can suppress bacterial growth and mold growth. In addition, the packing member (323) can perform the function of protecting the dehumidifying member (321) by blocking large dust particles in the air. For example, the packing member (323) can be composed of a polypropylene material.

[0223] The above dehumidifying module (300) may be configured to provide a plurality of dehumidifying members (320). For example, as illustrated in FIG. 8, the dehumidifying module (300) may be configured to have approximately 10 dehumidifying members (320) arranged in parallel.

[0224] The above dehumidifying module (300) may further include a fixing member (330a, 330b) configured by a potting method to fix the dehumidifying member (320). The fixing member (330a, 330b) may be configured to be filled in the interior of the first cap (340a, 340b) in a liquid form and solidified to fix the positions of a plurality of dehumidifying members (320).

[0225] For example, the above-mentioned fixed part (330a, 330b) may be made of urethane or epoxy material.

[0226] The above fixing part (330a, 330b) may include a first fixing part (330a) for fixing one end of the dehumidifying member (320) and a second fixing part (330b) for fixing the end of the tatsu.

[0227] The above first cap (340a, 340b) may be called a “porting cap”.

[0228] The first fixing member (330a) may be placed inside the upper cap (340a) provided on the upper side of the dehumidifying member (320) among the first caps (340a, 340b). The second fixing member (330b) may be placed inside the lower cap (340b) provided on the lower side of the dehumidifying member (320) among the first caps (340a, 340b).

[0229] A potting space (343) may be formed inside the first cap (340a, 340b) so that the above-mentioned fixed portion (330a, 330b) can be placed.

[0230] The end (320a) of the dehumidifying member (320) fixed by the above-mentioned fixing member (330a, 330b) can be exposed to the outside of the above-mentioned fixing member (330a, 330b).

[0231] The above dehumidifying module (300) may further include a second cap (350a, 350b) covering the first cap (340a, 340b). The second cap (350a, 350b) may be referred to as an “end cap.”

[0232] The second cap (350a, 350b) may include a first end cap (350a) covering the upper cap (340a) and a second end cap (350b) covering the lower cap (340b).

[0233] The first end cap (350a) may be provided with a connection port (354) through which at least a portion of the air discharged from the fan (150) is introduced. Air that has passed through the valve device (170) and the supply pipe (172) may flow into the interior of the first end cap (350a) through the connection port (354).

[0234] The above dehumidifying module (300) may further include a distribution plate (356) provided on the inside of the first end cap (350a). The distribution plate (356) may be supported at an end of the upper cap (340a) and shielded by the first end cap (350a).

[0235] The above connection port (354) can be connected to the space (distribution space) between the distribution plate (356) and the upper surface of the first end cap (350a). Accordingly, air can flow into the distribution space through the connection port (354) and toward the distribution plate (356).

[0236] A plurality of distribution holes (356a) may be formed in the above distribution plate (356). Air may flow toward the end (320a) of the dehumidifying member (320) through the plurality of distribution holes (356a) and may flow toward the inner peripheral surface forming the hollow portion of the dehumidifying member (320).

[0237] Due to the pressure difference between the inside and outside of the dehumidifying member (320), when water vapor passes through the dehumidifying member (320), a phenomenon of accumulation on the inner wall of the dehumidifying member (320) may occur. Such water vapor may deteriorate the dehumidifying performance of the dehumidifying member (320).

[0238] In order to solve this problem, at least a portion of the air discharged from the fan (150) is bypassed to pass through the distribution hole (356a) and supplied to the dehumidifying member (320), thereby removing the water vapor accumulated on the inner wall.

[0239] A recessed portion (353) may be formed in the second cap (350a, 350b). The recessed portion (353) may form a space between the end portion (320a) of the dehumidifying member (320) and the end surface of the second cap (350a, 350b).

[0240] The recessed portion (353) of the first end cap (350a) forms a space between the distribution plate (356) and the upper surface of the first end cap (350a), thereby forming a path for air flowing into the distribution hole (356a).

[0241] The recessed portion (353) of the second end cap (350b) can form a path through which moisture (water vapor) separated from the dehumidifying member (320) flows to the cap hole (355).

[0242] The above dehumidifying module (300) may further include a support (314) to reinforce the one-way supporting force of the dehumidifying member (320). For example, the support (314) may reinforce the vertical supporting force of the dehumidifying member (320).

[0243] Since the above dehumidifying member (320) is formed to be relatively long in the vertical direction, the support (314) can provide support in the vertical direction.

[0244] The support (314) may extend between the upper cap (340a) and the lower cap (340b). One end of the support (314) may be connected to the upper cap (340a), and the other end may be connected to the lower cap (340b).

[0245] For example, the support (314) may have a bar shape.

[0246] The above support (314) is provided in multiple numbers, and the multiple supports (314) may include a first support (314a) provided on one side of the upper cap (340a) and the lower cap (340b) and a second support (314b) provided on the other side.

[0247] The dehumidifying module (300) may include a housing (310) arranged to surround at least a portion of the dehumidifying member (320). The housing (310) may include a part covering both sides of the plurality of dehumidifying members (320) and a part covering a portion of the upper portion and a portion of the lower portion of the plurality of dehumidifying members (320).

[0248] The above housing (310) can function as a member that blocks the open space around the dehumidifying members (320) to prevent air from leaking (losing) into the space around the plurality of dehumidifying members (320) and the support (314).

[0249] In the above housing (310), a joining hole (311) to which the support (314) is joined can be formed.

[0250] The housing (310) may include a water supply duct (315) for supplying water to the dehumidifying member (320). The water supply duct (315) may be provided on a part that covers a portion of the upper portion of the plurality of dehumidifying members (320).

[0251] Water supplied from the water pump (180) can flow through the water supply duct (315). A water supply hole (315a) for supplying water toward the dehumidifying member (320) can be formed on the bottom surface of the water supply duct (315).

[0252] The above water supply holes (315a) are formed in multiple numbers, and the multiple water supply holes (315a) can be arranged in the direction in which the multiple dehumidifying members (320) are arranged, that is, in the left-right direction based on FIG. 1.

[0253] The above water supply hole (315a) may be located at the upper front side of the dehumidifying member (320). Even if water is sprayed toward the front of the dehumidifying member (320) through the water supply hole (315a), the water may come into contact with the dehumidifying member (320) due to the suction force of the fan (150).

[0254] Water supply through the above water supply hole (315a) can be intermittent.

[0255] The housing (310) may include a water supply port (317) connected to the water supply connection pipe (185), i.e., the second connection pipe (185b). The water supply port (317) may be connected to the water supply duct (315). For example, the water supply port (317) may pass through the housing (310) and be connected to a side of the water supply duct (315).

[0256] Water pumped from the above water pump (180) flows into the water supply port (317) through the second connecting pipe (185b) and can flow into the inside of the water supply duct (315).

[0257] When the dehumidifier (10) is operated in an environment with very low absolute humidity, the moisture separation performance of the dehumidifying member (320) may be weakened. Therefore, in order to improve the moisture separation performance, water may be supplied to the dehumidifying member (320) (improving the wettability of the dehumidifying member).

[0258] In order to form such a water supply path, the present embodiment may provide the above-described water pump (180), connecting pipe (185), and water supply duct (315).

[0259] The above dehumidifying module (300) may further include a sealer (371, 372) for sealing the space between the first cap (340a, 340b) and the second cap (350a, 350b).

[0260] The above sealer (371, 372) may include a first sealer (371) provided between the upper cap (340a) and the first end cap (350a). The first sealer (371) may be in contact with the upper cap (340a) and the first end cap (350a).

[0261] The above sealer (371, 372) may include a second sealer (372) provided between the lower cap (340b) and the second end cap (350b). The second sealer (372) may be in contact with the lower cap (340b) and the second end cap (350b).

[0262] FIG. 12 is a drawing showing a state in which a first suction flow and a discharge flow are generated in a dehumidifier according to an embodiment of the present invention, FIG. 13 is an upper perspective view showing the configuration of a first part and a second part in a dehumidifier according to an embodiment of the present invention, FIG. 14 is a perspective view showing the internal configuration of a dehumidifier with a dehumidifying module removed according to an embodiment of the present invention, FIG. 15 is a lower perspective view showing the configuration of a first part and a second part in a dehumidifier according to an embodiment of the present invention, FIG. 16 is a drawing showing a part of a dehumidifier according to an embodiment of the present invention, and FIG. 17 is a drawing showing a part of a discharge flow of a fan according to an embodiment of the present invention flowing into an inlet guide.

[0263] Referring to FIGS. 12 and 13, in the dehumidifier (10) according to the embodiment of the present invention, a first suction flow can be generated as the main flow of air to be dehumidified by driving the fan (150).

[0264] When the above fan (150) is driven, air can be sucked in through the first suction part (110a) in a direction crossing the front part (101), for example, in a vertical direction.

[0265] The air sucked in from the first suction portion (110a) can pass in the direction in which the plurality of dehumidifying members (320) extend, i.e., in the direction crossing the vertical direction (front-back direction).

[0266] By driving the vacuum pump (230), a negative pressure lower than the external pressure can be formed inside the dehumidifying member (320) due to the pressure difference between the outside and inside of the dehumidifying member (320).

[0267] As air passes through the dehumidifying member (320), moisture contained in the air may come into contact with the surface of the dehumidifying member (320) and be adsorbed. Then, the adsorbed moisture may be selectively separated from the air by diffusing and then being desorbed from the surface.

[0268] The separated moisture flows downward inside the dehumidifying member (320) and can flow into the cap hole (355) of the second end cap (350b). That is, the flow direction (downward) of the separated moisture (dotted arrow in FIG. 12) can form a direction perpendicular to the flow direction (front-back direction) of the air (solid arrow in FIG. 12).

[0269] Referring to Fig. 14, the air from which the moisture has been separated can be sucked in the axial direction of the fan (150). At this time, the air that has passed through the dehumidifying module (300) can be sucked into the hub (151) of the fan (150) through the fan suction portion (123a) of the second partition wall (123). A fan motor (155) can be coupled to the hub (151).

[0270] The fan (150) may include a plurality of blades (152) arranged in the circumferential direction of the hub (151). By the rotation of the plurality of blades (152), air sucked in the axial direction (front-back direction) of the fan (150) may be discharged in the radial direction of the fan (150).

[0271] The refrigerant discharged from the above fan (150) flows upward toward the upper surface (105) and can be discharged from the discharge portion (106).

[0272] Referring to FIGS. 15 and 16, the dehumidification module (300) and the heat exchanger (160) may be spaced apart from each other with a fan (150) therebetween. When the fan (150) is driven, a first suction flow flowing from the dehumidification module (300) to the first suction side of the fan (150) and a second suction flow flowing from the heat exchanger (160) to the second suction side of the fan (150) may be generated.

[0273] The above fan (150) may be configured as a two-way suction fan so that the first suction flow and the second suction flow can be generated.

[0274] Based on the first partition wall (121), a first connecting pipe (235a) that forms a path for water vapor separated from the dehumidifying module (300) may be provided on the lower side of the first partition wall (121).

[0275] The first connecting pipe (235a) may extend from the bottom of the dehumidifying module (300) to the suction side of the vacuum pump (230). At this time, the first connecting pipe (235a) may extend to the vacuum pump (230) by passing through the first through hole of the third partition wall (126).

[0276] A second connecting pipe (235b) may be provided on the lower side of the first bulkhead (121) to form a path for steam flowing into the heat exchanger (160) through the vacuum pump (230). The second connecting pipe (235b) may extend from the discharge side of the vacuum pump (230) to the bottom surface of the heat exchanger (160).

[0277] A condensate pipe (236) for discharging condensate generated in the heat exchanger (160) may be provided on the lower side of the first bulkhead (121). The condensate pipe (236) extends from the bottom surface of the heat exchanger (160) and may be coupled to the second through-hole of the second bulkhead (126). The condensate flowing through the condensate pipe (236) may flow into the drain tank (250) through the second bulkhead (126).

[0278] Referring to FIG. 17, the second suction flow of air sucked in from the second suction portion (115a) can be sucked into the second suction side of the fan (150) after passing through the heat exchanger (160).

[0279] And, the air is discharged in the radial direction of the fan (150) and can flow upward by hitting the fan discharge part (157) provided at the top of the fan (150).

[0280] At least a portion of the air passing through the fan (150) may be introduced into the guide hole (123b) adjacent to the upper end of the fan (150). The guide hole (123b) may be formed by penetrating the second partition wall (123).

[0281] The second partition wall (123) may include an inlet guide (175) that guides air to flow into the guide hole (123b). The inlet guide (175) may protrude from the second partition wall (123) toward the space where the fan (150) is located.

[0282] The bottom surface of the above-mentioned inlet guide (175) is open, and the open bottom surface can be introduced into the guide hole (123b). Air can be introduced into the valve device (170) provided in the partition wall (123) through the above-mentioned inlet guide (175) and the guide hole (123b).

[0283] The above valve device (170) can be placed in the space where the dehumidifying module (300) is installed in the guide hole (123b). That is, the inlet guide (175) and the valve device (170) can be placed opposite each other with respect to the second partition wall (123).

[0284] A supply pipe (172) is connected to the above valve device (170), and the supply pipe (174) can be connected to the connection port (354) of the dehumidification module (300).

[0285] The above valve device (170) is provided so as to be openable or closed, and when the valve device (170) is opened, air can be supplied to the distribution plate (356) side of the dehumidifying module (300) through the valve device (170) and the supply pipe (172).

[0286] Fig. 18 is a drawing showing the configuration of a display unit according to an embodiment of the present invention.

[0287] Referring to Fig. 18, as described above, a display unit (108) for outputting operation information of the dehumidifier (10) may be provided on the upper surface (105) of the main body (100). The display unit (108) may include an input unit for inputting an operation command and an output unit for outputting operation information.

[0288] Specifically, the display unit (108) may be provided with a power button (108a) for turning on the power of the dehumidifier (10) and an operation mode selection button (108b) for selecting the operation mode of the dehumidifier (10).

[0289] The user can turn on the dehumidifier (10) by pressing the power button (108a) and select one of the various operation modes of the dehumidifier (10) by pressing the operation mode selection button (108b). For example, the operation mode of the dehumidifier (10) may include at least one of basic operation, inverter operation, and absolute humidity operation.

[0290] The above basic operation is a basic operation mode that dehumidifies an indoor space by driving a fan (150) and a vacuum pump (230), and can be understood as an operation mode that allows the user to end operation at a desired time based on a timer.

[0291] In this embodiment, the basic operation may include a strong dehumidification operation, an intermediate dehumidification operation, and a low-noise dehumidification operation. The strong dehumidification operation, the intermediate dehumidification operation, and the low-noise dehumidification operation may be distinguished according to the rotation speed of the fan (150) and / or the output (motor rotation speed) of the vacuum pump (230).

[0292] The above inverter operation is an operation mode that operates based on the target humidity (relative humidity) set by the user, and can be understood as an operation mode that operates automatically until the relative humidity of the indoor space reaches the target relative humidity.

[0293] The above absolute humidity operation is an operation mode that operates based on the target humidity (absolute humidity) set by the user, and can be understood as an operation mode that automatically operates until the absolute humidity of the indoor space reaches the target absolute humidity.

[0294] The above display unit (108) may be provided with an operation mode display window (108c) that shows the selected operation mode. The operation mode selected among the strong dehumidification operation, medium dehumidification operation, and low-noise dehumidification operation may be highlighted and displayed on the operation mode display window (108c).

[0295] The display unit (108) may be provided with a relative humidity information display window (108e) for displaying relative humidity information of an indoor space. The relative humidity information display window (108e) may display indoor dry bulb temperature and indoor relative humidity. In addition, the relative humidity information display window (108e) may selectively display a target dry bulb temperature and a target relative humidity.

[0296] The above display unit (108) may be equipped with an absolute humidity information display window (108f) for displaying absolute humidity information of an indoor space. The absolute humidity information display window (108f) may display indoor absolute humidity or target absolute humidity. Here, absolute humidity may refer to the mass of water vapor contained in a unit volume of air.

[0297] The above display unit (108) may be provided with a wind volume button (108g) for controlling the rotation speed of the fan (150).

[0298] The above display unit (108) may be equipped with a lock button (108h) that maintains the set function even when another button is pressed when the set function is in operation.

[0299] The above display unit (108) may be equipped with a timer button (108i) that allows the user to turn off the device at a desired time. The user can select the timer button (108i) to schedule the device to be turned off at a desired time.

[0300] The above display unit (108) may be equipped with a UV button (108j) for ultraviolet sterilization. The user can select the UV button (108j) to perform ultraviolet sterilization on the air discharged from the dehumidifier (10).

[0301] Figure 19 is a flowchart showing a basic operation control method of a dehumidifier according to an embodiment of the present invention.

[0302] Referring to Fig. 19, the control unit of the dehumidifier (10) starts operation of the dehumidifier (10) when power is supplied. The dehumidifier (10) may be set to operate in the basic operation mode. The user may turn on the power of the dehumidifier (10) through the display unit (108) (S110).

[0303] When the dehumidifier (10) starts operating, the control unit determines whether there is a problem with the electrical components. For example, the control unit can determine whether there is a problem with the components such as the power supply, circuit, communication unit, fan (150), and vacuum pump (230) provided in the dehumidifier (10) (S120).

[0304] If it is determined that there is no abnormality in the electrical components, the control unit determines whether the water supply tank (260) and the drain tank (250) are installed. For example, the control unit can detect the magnets provided in the water supply tank (260) and the drain tank (250) through a sensor to determine whether the water supply tank (260) and the drain tank (250) are correctly installed at the bottom of the dehumidifier (10) (S130).

[0305] If it is determined that a water supply tank (260) and a drain tank (250) are installed, the control unit determines whether the water level of the drain tank (250) is below the reference water level. The control unit can detect the water level of the drain tank (250) using a water level sensor (S140).

[0306] If there is a problem with the electric components, the water supply tank and drain tank are not installed, or the water level of the drain tank is higher than the standard water level, the control unit can display an error notification (S150).

[0307] If the water level of the above water supply tank (250) is determined to be below the standard water level, the control unit checks the operation mode and drives the vacuum pump (230) and fan (150) based on the operation mode.

[0308] The user can select one of the strong dehumidification operation, intermediate dehumidification operation, and low-noise dehumidification operation through the display unit (108). In addition, the control unit can drive the vacuum pump (230) and fan (150) with an output (rotation speed) corresponding to the corresponding operation mode (S160, S170).

[0309] When the dehumidifying operation of the above dehumidifier (10) is performed, the control unit can determine whether a timer has been set. The user can schedule the dehumidifier to be turned off at a desired time through the display unit (108).

[0310] If it is determined that the timer is not set, the control unit determines whether a command to terminate the dehumidifier operation is input, and if the command to terminate the operation is not input, it proceeds to step S120 to continuously perform the dehumidification operation (S180, S190).

[0311] If it is determined that a timer has been set, the control unit determines whether the set timer has arrived. That is, the control unit can continuously perform dehumidification operation until the set timer has arrived (S200).

[0312] When a command to terminate the dehumidifier operation is input or it is determined that the set timer has arrived, the control unit stops the operation of the vacuum pump (230) and the fan (150) and terminates the operation of the dehumidifier (10) (S210, S220).

[0313] Figure 20 is a flowchart showing an inverter operation control method of a dehumidifier according to an embodiment of the present invention.

[0314] Referring to Fig. 20, the control unit of the dehumidifier (10) starts operation of the dehumidifier (10) when power is supplied. The dehumidifier (10) may be set to operate in inverter operation mode. The user can turn on the power of the dehumidifier (10) through the display unit (108) (S310).

[0315] When the dehumidifier (10) starts operating, the control unit determines whether there is a problem with the electrical components. For example, the control unit can determine whether there is a problem with the components such as the power supply, circuit, communication unit, fan (150), and vacuum pump (230) provided in the dehumidifier (10) (S320).

[0316] If it is determined that there is no abnormality in the electrical components, the control unit determines whether the water supply tank (260) and the drain tank (250) are installed. For example, the control unit can detect the magnets provided in the water supply tank (260) and the drain tank (250) through a sensor, thereby determining whether the water supply tank (260) and the drain tank (250) are correctly installed at the bottom of the dehumidifier (10) (S330).

[0317] If it is determined that a water supply tank (260) and a drain tank (250) are installed, the control unit determines whether the water level of the drain tank (250) is below the reference water level. The control unit can detect the water level of the drain tank (250) using a water level sensor (S340).

[0318] If there is a problem with the electric components, the water supply tank and drain tank are not installed, or the water level of the drain tank is higher than the standard water level, the control unit can display an error notification (S350).

[0319] If the water level of the above water tank (250) is determined to be below the standard water level, the control unit operates the vacuum pump (230) and fan (150) to perform dehumidification operation and detects the indoor temperature and indoor humidity.

[0320] The above control unit can detect the temperature and humidity of the air sucked into the dehumidifier (10) or the air discharged from the dehumidifier (10) while the dehumidification operation is being performed. And the indoor relative humidity can be calculated using the detected indoor temperature and indoor humidity (S360, S370).

[0321] The above control unit can check the target humidity. The target humidity may refer to the humidity of the indoor space desired by the user. The target humidity can be set via the display unit (108). The target humidity can be understood as the target relative humidity (S380).

[0322] The above control unit can compare the target humidity with the reference humidity and control the output of the vacuum pump (230) based on the comparison result. Here, the reference humidity may include a relative humidity value corresponding to a certain percentage of the indoor relative humidity. There may be multiple reference humidity values.

[0323] According to this embodiment, if the target humidity is less than the first reference humidity, the control unit controls the vacuum pump (230) to operate at the first output.

[0324] Here, the target humidity being lower than the first reference humidity can be understood as meaning that the target humidity is relatively lower than the indoor humidity, requiring a relatively large amount of dehumidification. Accordingly, in this case, the vacuum pump (230) is operated at a relatively high output to remove a relatively large amount of moisture from the indoor space.

[0325] For example, the first reference humidity can be defined as a humidity value corresponding to 0.8 times the current indoor humidity (S390, S400).

[0326] If the target humidity is higher than the first reference humidity and lower than the second reference humidity, the control unit controls the vacuum pump (230) to operate at the second output. At this time, the second reference humidity may be higher than the first reference humidity, and the second output may be lower than the first output.

[0327] Here, the target humidity being above the first reference humidity and below the second reference humidity can be understood as a condition requiring a moderate amount of dehumidification. Accordingly, in this case, the vacuum pump (230) is operated at medium output to remove an appropriate amount of moisture from the indoor space.

[0328] For example, the second reference humidity can be defined as a humidity value that is 0.9 times the current indoor humidity (S410, S420).

[0329] If the target humidity is higher than the second reference humidity and lower than the indoor humidity, the control unit controls the vacuum pump (230) to operate at a third output. At this time, the third output may be lower than the second output.

[0330] Here, the target humidity being higher than the second reference humidity and lower than the indoor humidity can be understood as a state in which the target humidity is similar to the indoor humidity and thus requires a relatively small amount of dehumidification. Accordingly, in this case, the vacuum pump (230) is operated at a relatively low output to remove a relatively small amount of moisture from the indoor space (S430, S440).

[0331] That is, the control unit can automatically control the output of the vacuum pump (230) by comparing the indoor humidity and the target humidity.

[0332] The above control unit determines whether a command to terminate the dehumidifier operation is input, and if no command to terminate the operation is input, the control unit proceeds to step S320 to continuously perform the dehumidifying operation (S450).

[0333] When a command to terminate the dehumidifier operation is input or the target humidity is higher than the indoor humidity, the control unit stops the operation of the vacuum pump (230) and the fan (150) and terminates the operation of the dehumidifier (10) (S460, S470).

[0334] Figure 21 is a flowchart showing an absolute humidity operation control method of a dehumidifier according to an embodiment of the present invention.

[0335] Referring to Fig. 21, the control unit of the dehumidifier (10) starts operation of the dehumidifier (10) when power is supplied. The dehumidifier (10) may be set to operate in absolute humidity operation mode. The user may turn on the power of the dehumidifier (10) through the display unit (108) (S510).

[0336] When the dehumidifier (10) starts operating, the control unit determines whether there is a problem with the electrical components. For example, the control unit can determine whether there is a problem with the components such as the power supply, circuit, communication unit, fan (150), and vacuum pump (230) provided in the dehumidifier (10) (S520).

[0337] If it is determined that there is no abnormality in the electrical components, the control unit determines whether the water supply tank (260) and the drain tank (250) are installed. For example, the control unit can detect the magnets provided in the water supply tank (260) and the drain tank (250) through a sensor, thereby determining whether the water supply tank (260) and the drain tank (250) are correctly installed at the bottom of the dehumidifier (10) (S530).

[0338] If it is determined that a water supply tank (260) and a drain tank (250) are installed, the control unit determines whether the water level of the drain tank (250) is below the reference water level. For example, the control unit can detect the water level of the drain tank (250) using a water level sensor (S540).

[0339] If there is a problem with the electric components, the water supply tank and drain tank are not installed, or the water level of the drain tank is higher than the standard water level, the control unit can display an error notification (S550).

[0340] If the water level of the above water tank (250) is determined to be below the standard water level, the control unit operates the vacuum pump (230) and fan (150) to perform dehumidification operation and detects the indoor temperature and indoor humidity.

[0341] The above control unit can detect the temperature and humidity of the air sucked into the dehumidifier (10) or the air discharged from the dehumidifier (10) while the dehumidification operation is being performed. And the indoor absolute humidity can be calculated using the detected indoor temperature and indoor humidity (S560, S570).

[0342] The above control unit can check the target absolute humidity and calculate the target dehumidification amount.

[0343] The target absolute humidity may refer to the absolute humidity of an indoor space desired by the user. The target absolute humidity may be set via the display unit (108).

[0344] The above control unit can calculate the amount of water vapor to be removed from the water vapor contained in the air so that the indoor absolute humidity reaches the target absolute humidity. That is, in the present embodiment, dehumidification operation can be performed based on absolute humidity rather than relative humidity.

[0345] Specifically, conventional dehumidifiers only consider relative humidity. Therefore, they fail to account for changes in relative humidity due to temperature fluctuations at the same absolute humidity. This results in the device displaying dehumidification even when the indoor moisture content has not decreased, making it difficult to achieve accurate dehumidification. Furthermore, conventional dehumidifiers utilize constant-speed compressors or dual inverter compressors, making it difficult to achieve a constant humidity level.

[0346] However, since the dehumidifier of the present invention does not cause temperature changes during dehumidification operation, there is no need to worry about changes in relative humidity due to temperature changes at the same absolute humidity, and dehumidification operation is possible based on absolute humidity even if temperature changes occur due to external conditions. Therefore, the present invention has the advantage of being able to cope with changes in relative humidity caused by simple temperature changes (S580, S590).

[0347] The above control unit can compare the target absolute humidity with the reference absolute humidity and control the output of the vacuum pump (230) based on the comparison result. Here, the reference absolute humidity may include an absolute humidity value corresponding to a certain percentage of the indoor absolute humidity. There may be multiple reference absolute humidity values.

[0348] According to this embodiment, if the target absolute humidity is less than the first reference absolute humidity, the control unit controls the vacuum pump (230) to operate at the first output.

[0349] Here, the target absolute humidity being lower than the first reference absolute humidity can be understood as meaning that the target absolute humidity is relatively lower than the indoor absolute humidity, requiring a relatively large amount of dehumidification. Accordingly, in this case, the vacuum pump (230) is operated at a relatively high output to remove a relatively large amount of moisture from the indoor space.

[0350] For example, the first reference absolute humidity can be defined as a humidity value corresponding to 0.8 times the indoor absolute humidity (S600, S610).

[0351] If the target absolute humidity is greater than or equal to the first reference absolute humidity and less than the second reference absolute humidity, the control unit controls the vacuum pump (230) to operate at the second output. At this time, the second reference absolute humidity may be higher than the first reference absolute humidity, and the second output may be lower than the first output.

[0352] Here, the target absolute humidity being greater than the first reference absolute humidity and less than the second reference absolute humidity can be understood as a condition requiring a moderate amount of dehumidification. Accordingly, in this case, the vacuum pump (230) is operated at medium output to remove an appropriate amount of moisture from the indoor space.

[0353] For example, the second reference absolute humidity can be defined as a humidity value corresponding to 0.9 times the indoor absolute humidity (S620, S630).

[0354] If the target humidity is higher than the second reference absolute humidity and lower than the indoor absolute humidity, the control unit controls the vacuum pump (230) to operate at a third output. At this time, the third output may be lower than the second output.

[0355] Here, the fact that the target absolute humidity is greater than the second reference absolute humidity and less than the indoor absolute humidity can be understood as meaning that the target absolute humidity is similar to the indoor absolute humidity, requiring a relatively small amount of dehumidification. Accordingly, in this case, the vacuum pump (230) is operated at a relatively low output to remove a relatively small amount of moisture from the indoor space (S640, S650).

[0356] That is, the control unit can automatically control the output of the vacuum pump (230) by comparing the indoor absolute humidity with the target absolute humidity.

[0357] The above control unit determines whether a command to terminate the dehumidifier operation is input, and if no command to terminate the operation is input, it proceeds to step S520 to continuously perform the dehumidifying operation (S660).

[0358] When a command to terminate the dehumidifier operation is input or the target absolute humidity is higher than the indoor absolute humidity, the control unit stops the operation of the vacuum pump (230) and the fan (150) and terminates the operation of the dehumidifier (10) (S670, S680).

Claims

1. A main body equipped with a suction part and a fan; A dehumidifying module including a dehumidifying member that separates moisture from air sucked in from the suction unit by driving the fan; A vacuum pump that provides driving force to discharge moisture separated from the dehumidifying module to the outside of the dehumidifying module; A heat exchanger fluidly connected to the vacuum pump and condensing the separated moisture; A drain tank for storing water condensed in the above heat exchanger; and A dehumidifier characterized by including a control unit that controls the output of the vacuum pump differently depending on the driving mode.

2. In paragraph 1, A dehumidifier in which the above control unit controls the rotation speed of the fan differently depending on the above operation mode.

3. In paragraph 1, A dehumidifier in which the above control unit compares the set target humidity with the reference humidity and controls the output of the vacuum pump according to the comparison result.

4. In paragraph 3, A dehumidifier wherein the target humidity includes a humidity value input by the user.

5. In paragraph 3, The above standard humidity is a dehumidifier that includes a relative humidity value corresponding to a certain percentage of the indoor relative humidity.

6. In paragraph 3, The above standard humidity is a dehumidifier that includes an absolute humidity value corresponding to a certain percentage of the indoor absolute humidity.

7. In paragraph 3, The above standard humidity is a dehumidifier including a first standard humidity and a second standard humidity higher than the first standard humidity.

8. In paragraph 7, The above control unit, If the target humidity is less than the first reference humidity, the output of the vacuum pump is set to the first output, A dehumidifier that sets the output of the vacuum pump to a second output that is lower than the first output when the target humidity is higher than the first reference humidity and lower than the second reference humidity.

9. In paragraph 8, The above control unit, A dehumidifier that sets the output of the vacuum pump to a third output that is lower than the second output when the target humidity is higher than the second reference humidity and lower than the current indoor humidity.

10. In paragraph 9, The above control unit, A dehumidifier that stops the operation of the vacuum pump when the target humidity is higher than the indoor humidity.

11. When power is applied, a step of determining whether a tank for storing water is installed; If the above tank is equipped, a step of determining the water level of the tank; If the water level of the above tank is below the reference water level, a step of entering the operation mode of the dehumidifier; and A step of driving a vacuum pump and a fan based on an input driving mode is included, A control method for a dehumidifier, characterized in that the output of the vacuum pump is controlled differently according to the above driving mode.

12. In paragraph 11, A control method for a dehumidifier in which the rotation speed of the fan is controlled differently depending on the above driving mode.

13. In paragraph 11, The step of driving the vacuum pump and fan based on the input driving mode is as follows: A step of comparing the set target humidity with the reference humidity; and A control method for a dehumidifier, comprising a step of controlling the output of the vacuum pump according to the comparison result.

14. In paragraph 13, A control method for a dehumidifier, wherein the target humidity includes a humidity value input by a user.

15. In paragraph 13, The above standard humidity is a control method for a dehumidifier including a relative humidity value corresponding to a certain percentage of the indoor relative humidity.

16. In paragraph 13, The above standard humidity is a control method for a dehumidifier including an absolute humidity value corresponding to a certain percentage of the indoor absolute humidity.

17. In paragraph 13, The above standard humidity is a control method for a dehumidifier including a first standard humidity and a second standard humidity higher than the first standard humidity.

18. In paragraph 17, If the target humidity is less than the first reference humidity, the output of the vacuum pump is set to the first output, A control method for a dehumidifier in which the output of the vacuum pump is set to a second output that is lower than the first output when the target humidity is equal to or higher than the first reference humidity and less than the second reference humidity.

19. In paragraph 18, A control method for a dehumidifier in which the output of the vacuum pump is set to a third output that is lower than the second output when the target humidity is higher than the second reference humidity and lower than the current indoor humidity.

20. In paragraph 19, The above control unit, A control method for a dehumidifier in which the operation of the vacuum pump is stopped when the target humidity is higher than the indoor humidity.

Images