Method For Operating Dehumidifying Water Purifier In Low Temperature Environment

Abstract

A method for operating a dehumidifying water purifier capable of operating in a low-temperature environment comprises: a first step of operating an intake fan to guide external air to a moisture adsorption unit; a second step of measuring the weight of the moisture adsorption unit using a weight measuring unit; a third step of determining whether the weight of the moisture adsorption unit is greater than or equal to a reference weight; and a fourth step of, if the weight of the moisture adsorption unit is greater than or equal to the reference weight, operating a heating unit to evaporate the adsorbed moisture of the moisture adsorption unit and operating a condensate generation unit to condense the evaporated moisture to generate condensate.

Description

Technology Field

[0001] The present invention relates to a dehumidifying water purifier, and more specifically, to a method of operating a dehumidifying water purifier that can operate smoothly even in a low-temperature environment (e.g., 15℃ or lower). Background Technology

[0002] A dehumidifying water purifier is a device that captures moisture from the air and converts it into drinking water, equipped with both dehumidification and water purification functions.

[0003] Dehumidification involves capturing moisture from the air, which is typically performed through an adsorption unit containing an adsorbent, and water purification can be performed through a water purification unit that converts the moisture captured by the dehumidification function into condensate and purifies (filters) it to supply it as drinking water.

[0004] Condensate generation can be achieved using compressor methods, thermoelectric methods, etc. The compressor method utilizes the principle that the compressed refrigerant cools the surrounding air by absorbing external heat as it expands during the compression (condensation) / expansion (evaporation) cycle, while the thermoelectric method utilizes the principle of cooling the surrounding air through a cooling plate placed on one side.

[0005] However, in the case of a compressor system that repeats compression and expansion, moisture condensation proceeds smoothly at temperatures lower than the air temperature in high-temperature and high-humidity environments, but in low-temperature environments (e.g., 15℃ or lower), moisture condensation often does not proceed smoothly as phenomena such as the compressor's cooling nozzle freezing occur.

[0006] In addition, in conventional technologies such as compressor methods and thermoelectric methods, the efficiency of converting adsorbed moisture in the adsorption section into purified water is low, and especially in low-temperature environments (e.g., 15°C or lower), it is difficult for the adsorbed moisture to escape from the adsorption section, which increases the difficulty in fully utilizing the adsorbed moisture.

[0007] [Prior Patent]

[0008] 1. Korean Patent Registration No. 10-2451979 (Air Purifying Dehumidifying Water Purifier)

[0009] 2. Korean Patent Registration No. 10-2264599 (Dehumidification device using a thermoelectric element)

[0010] 3. Korean Patent Registration No. 10-2291446 (Dehumidifier equipped with a multi-circulating evaporator and a secondary condenser coil) The problem to be solved

[0011] The present invention is intended to solve the problems of such prior art,

[0012] First, it can operate smoothly even in low-temperature environments (e.g., below 15℃), enabling a stable supply of purified drinking water regardless of environmental changes, and

[0013] Second, we aim to provide a method for operating a dehumidifying water purifier that can significantly increase the efficiency of converting airborne moisture into purified drinking water through capture and condensation. means of solving the problem

[0014] The method for operating a dehumidifying water purifier according to the present invention for achieving such an objective may include a first step of operating an intake fan to guide external air to a moisture adsorption unit, a second step of measuring the weight of the moisture adsorption unit using a weight measuring unit, a third step of determining whether the weight of the moisture adsorption unit is greater than or equal to a reference weight, and a fourth step of, if the weight of the moisture adsorption unit is greater than or equal to the reference weight, operating a heating unit to evaporate the adsorbed moisture of the moisture adsorption unit and operating a condensate generation unit to condense the evaporated moisture to generate condensate.

[0015] The method for driving a dehumidifying water purifier according to the present invention may include, after the fourth step, a fifth step of measuring the weight of a moisture adsorption unit using a weight measuring unit, a sixth step of determining whether the weight of the moisture adsorption unit is less than a reference weight, a seventh step of stopping the heating unit and operating an exhaust fan to cool the moisture adsorption unit if the weight of the moisture adsorption unit is less than the reference weight, an eighth step of determining whether the temperature of the moisture adsorption unit is less than the external air temperature, and a ninth step of stopping or decelerating the exhaust fan if the temperature of the moisture adsorption unit is less than the external air temperature.

[0016] The dehumidifying water purifier driving method of the present invention can move to the second step after the ninth step and repeat steps 2 through 9.

[0017] In the method for driving a dehumidifying water purifier according to the present invention, step 7 may further include a step of stopping the intake fan, and in this case, after step 9, the process may move to step 1 and repeat steps 1 through 9.

[0018] The dehumidifying water purifier driving method of the present invention may separate the condensate generating unit into a first condensate generating unit and a second condensate generating unit in the fourth step, and in this case, the fourth step may sequentially perform a 4-1 step of generating a primary condensate from the evaporated moisture of the moisture adsorption unit in the first condensate generating unit and a 4-2 step of generating a secondary condensate from the residue of the evaporated moisture that was not condensed in the second condensate generating unit. Effects of the invention

[0019] The dehumidifying water purifier driving method of the present invention having such a configuration can smoothly operate the dehumidification / water purification function even in a low-temperature environment (e.g., 15℃ or lower) by heating the moisture adsorption part through the heating part as needed, and as a result, can stably supply purified drinking water regardless of environmental changes, and furthermore, by supplying evaporated moisture to the condensate generating part, it can effectively prevent phenomena such as the cooling part nozzle of the compressor freezing in a low-temperature environment (e.g., 15℃ or lower).

[0020] In addition, the dehumidifying water purifier driving method of the present invention can heat the moisture adsorption part as needed using a heating part, thereby significantly increasing the efficiency of capturing and condensing air moisture to convert it into purified drinking water. Brief explanation of the drawing

[0021] FIG. 1 is a configuration diagram of a dehumidifying water purifier capable of operating in a low-temperature environment according to the present invention. FIG. 2 is a flowchart illustrating a first driving method of a dehumidifying water purifier that can be driven in a low-temperature environment according to the present invention. FIG. 3 is a flowchart illustrating a second driving method of a dehumidifying water purifier that can be driven in a low-temperature environment according to the present invention. Specific details for implementing the invention

[0022] The present invention will be described in detail below with reference to the attached drawings.

[0024] FIG. 1 is a configuration diagram of a dehumidifying water purifier capable of operating in a low-temperature environment according to the present invention.

[0025] As illustrated in FIG. 1, the dehumidifying water purifier of the present invention includes a dehumidifying unit (10), a condensate generating unit (20), a storage tank (30), a water purification unit (40), an intake fan (F1), an exhaust fan (F2), etc.

[0026] The dehumidification unit (10) adsorbs moisture from the air and may include a moisture adsorption unit (11), a weight measuring unit (12), a heating unit (13), etc.

[0027] The moisture adsorption unit (11) adsorbs moisture from the incoming air and may include a moisture adsorbent. It is desirable for the moisture adsorbent to have characteristics such as high hygroscopicity and a low regeneration temperature. High hygroscopicity allows for a longer regeneration / dehumidification cycle, and a low regeneration temperature makes it easier to configure the heating unit.

[0028] Moisture adsorbents may include zeolite, silica gel, alumina, or compounds containing these materials.

[0029] Zeolites are a general term for minerals that are hydrated aluminum silicates of alkali and alkaline earth metals. Types include barbiturite, oxeye nitrate, cabazite, soda arsenite, heulandite, stilbite, lomontite, and inesite. Due to their crystal structure, the bonds between atoms are loose, and since the bonding structure is maintained even when moisture filling the spaces between them is released at high temperatures, they possess excellent properties for adsorbing moisture and fine particles. Among zeolites, ferroaluminophosphate exhibits characteristics of a moisture adsorption capacity of 0.2g or less per gram within a P / Po range of 0.1 to 0.3, and a regeneration temperature of 60 to 80°C. Aluminophosphate among zeolites exhibits characteristics of a moisture adsorption capacity of 0.2g or less per gram within a P / Po range of 0.15 to 0.35, and a regeneration temperature of 60 to 80°C.

[0030] Silica gel has the chemical formula SiO2 + nH2O and consists of amorphous particles formed by small pores interconnected to form a network structure in which solvents such as water are trapped and solidified. Due to its large surface area, it has excellent moisture absorption capabilities.

[0031] For example, Korean Patent Registration No. 0542613 discloses a method for manufacturing a moisture adsorbent by impregnating activated diatomite with a solution of nitrates or sodium sulfate (Na2SO4) in an amount of 5-30% by weight relative to the raw material and a sulfate additive which is an antioxidant in an amount of 5-10% by weight relative to the raw material, drying the mixture in a drying oven at 150-600°C for 30 minutes to 1 hour and 30 minutes, and then naturally cooling the mixture. Furthermore, it discloses a method of using activated clayey or porous natural minerals (zeolite, diatomite, bentonite, vermiculite) or mixing them in appropriate amounts, and then adding a solution of nitrates or sodium sulfate (Na2SO4) to impregnate the granules. The moisture adsorbent of the present invention may use the moisture adsorbent disclosed in such prior art.

[0032] The moisture adsorption part (11) can be configured, for example, in the form of a clay-like plate with dimensions of 150 × 150 × 8 mm, and an adsorption plate with holes of 5 mm in diameter formed at regular intervals can be used.

[0033] The moisture adsorption portion (11) can be formed by coating a moisture adsorbent thin film on a substrate. For example, a copolymer such as TEOS, MTES, or Brij-76 as a silica precursor and a solvent such as EtOH or acetone can be mixed in a sol state, and then spin-coated or immersed on a substrate to form a moisture adsorbent thin film.

[0035] The weight measuring unit (12) measures the weight of the moisture adsorption unit (11) and may include, for example, a load cell.

[0036] A load cell is a device that detects changes in physical force (pressure or load) applied from the outside and converts them into electrical signals, and has a strain gauge attached to its surface. When force is applied to the load cell, the load cell deforms, and at this time, the strain gauge deforms and the resistance value changes. At this time, when voltage is applied to the power terminal of the load cell, a voltage proportional to the change in the resistance value of the strain gauge is output from the output terminal, and the change in weight of the moisture adsorption part (11) can be measured using this output voltage.

[0038] The heating unit (13) heats the moisture adsorption unit (11) to evaporate the adsorbed moisture, and can be operated when the weight of the moisture adsorption unit (11) received from the weight measuring unit (12) reaches a reference weight. Here, the reference weight may refer to the weight in which the moisture adsorbed in the moisture adsorption unit (11) has accumulated to the amount necessary to provide purified water. For example, the reference weight can be selected in the range of 30 to 100% based on the moisture saturation of the moisture adsorbent. Generally, since adsorption does not occur further when the moisture adsorbent is saturated with moisture, it may be desirable to operate the heating unit (13) before the point at which moisture saturation occurs so that the dehumidification function can be performed smoothly.

[0039] The heating unit (13) may include a microwave heater. The microwave heater may include an oscillator that generates a wavelength of 300 MHz to 300 GHz. In the present invention, a 2.45 GHz oscillator may be used for the microwave heater. The microwave heater may be equipped with a shield member on the moisture adsorption unit (11) to block leakage to the outside of the moisture adsorption unit (11) when the microwave directly irradiates the moisture adsorption unit (11).

[0041] The condensate generating unit (20) generates condensate by condensing the evaporated moisture discharged from the moisture adsorption unit (11). In the present invention, two or more condensate generating units may be included to increase condensation efficiency.

[0042] As illustrated in FIG. 1, the condensate generating unit (20) may include a first condensate generating unit (21) and a second condensate generating unit (22).

[0043] The first condensate generating unit (21) generates primary condensate by condensing the evaporated moisture of the moisture adsorption unit (11) in a primary manner, and can be configured as a compressor cooling method of a compressor / condenser / expansion valve / evaporator with relatively high condensation efficiency.

[0044] The compressor can increase the temperature and pressure of the refrigerant by pressurizing the low-temperature / low-pressure refrigerant (usually in a gaseous state) flowing in along the refrigerant line.

[0045] A condenser can cool high-temperature / high-pressure refrigerant (usually in a gaseous state) entering from a compressor to produce medium-temperature / high-pressure refrigerant (usually in a liquid state). The condenser may include a heat exchanger, such as a fan, to cool the refrigerant.

[0046] The expansion valve can reduce the pressure of medium-temperature / high-pressure refrigerant (usually in liquid state) flowing in from the condenser to generate low-temperature / low-pressure refrigerant (usually in liquid state).

[0047] The evaporator can lower the surrounding heat by absorbing external heat and evaporating the low-temperature / low-pressure refrigerant (usually in liquid state) flowing in from the expansion valve. At this time, as the air surrounding the evaporator is cooled, the evaporated moisture in the gaseous state can be condensed to produce primary condensate.

[0048] The first condensate generating unit (21) having this configuration can generate primary condensate by condensing 60 to 90% of the evaporated moisture discharged from the moisture adsorption unit (11).

[0050] The second condensate generating unit (22) generates secondary condensate by secondarily condensing (i.e., additionally condensing) the evaporated moisture that has passed through the first condensate generating unit (21) (strictly speaking, the excess evaporated moisture that has not been condensed in the first condensate generating unit (21)) and can be configured as a thermoelectric cooling method with relatively low condensation efficiency.

[0051] The second condensate generating unit (22) may include a thermoelectric element, a cooling plate, a heat sink, etc. The cooling plate is installed in close contact with one side of the thermoelectric element and can condense excess evaporated moisture on the surface using the cooling heat generated on one side of the thermoelectric element. The heat sink is installed in close contact with the other side of the thermoelectric element and can release heat generated on the other side of the thermoelectric element to the outside. The cooling plate may be configured in a zigzag shape with alternating convex and concave shapes to increase the surface area. The heat sink may be formed from a metal with high thermal conductivity, such as aluminum or copper, and, if necessary, may be configured to allow heat exchange by forming a fluid channel inside.

[0053] The storage tank (30) can store condensate generated in the condensate generating unit (20). The storage tank (30) can be connected to the condensate generating unit (20) via piping.

[0055] The water purification unit (40) purifies the condensate stored in the storage tank (30) and converts it into drinking water, and may include a condensate pump, a filter unit, a water purification tank, a hot and cold water generation unit, a discharge tap, etc.

[0056] The condensate pump can transfer the condensate from the storage tank (30), which is located at the bottom of the housing, to the filter section, which is located at the top of the housing.

[0057] The filter unit can purify the transported condensate by removing foreign substances. The filter unit can be configured in a form in which multiple filters are sequentially combined, for example, in a multi-stage form in which carbon filters, hollow fiber membrane filters, membrane filters, etc. are sequentially combined.

[0058] The water purification tank stores purified water that has passed through a filter section, and an ultraviolet (UV) sterilizer can be additionally installed for water sterilization.

[0059] The water purification tank is equipped with a water level sensor to detect whether the stored water exceeds a set water level. If the stored water exceeds the set water level, a request can be made to stop the generation of condensate to a control unit (not shown) or a condensate generation unit (20).

[0060] The water purification tank may be additionally equipped with an auxiliary water purification tank. In this case, if the water level of the water purification tank exceeds a set level, the purified water in the water purification tank can be transferred to the auxiliary water purification tank. The transfer of purified water can be implemented using an overflow, shut-off valve, etc.

[0061] The hot and cold water generating unit generates hot or cold water by heating or cooling purified water, and may include a heat pipe, etc.

[0062] The discharge tap discharges purified water to the outside, and, for example, a push-type tap can be used.

[0064] The intake fan (F1) is located at the front (inlet end) of the dehumidification unit (10), specifically the moisture adsorption unit (11), and draws external air toward the moisture adsorption unit (11), and may include a blade, a motor, etc.

[0066] The exhaust fan (F2) is located at the rear (outlet end) of the condensate generating section (20) to discharge incoming air to the outside, and may include blades, a motor, etc., in the same way as the intake fan (F1).

[0068] At least one intake fan (F1) and an exhaust fan (F2) are included. It is desirable to have both when distinguishing between intake and exhaust, or when using the intake fan (F1) and the exhaust fan (F2) for a specific purpose (function). For example, the intake fan (F1) contributes significantly to collecting moisture in the moisture adsorption unit (11), and the exhaust fan (F2) creates a strong airflow within the housing, which actually hinders moisture adsorption in the moisture adsorption unit (11), but contributes significantly to lowering the heat of the moisture adsorption unit (11). Therefore, both the intake fan (F1) and the exhaust fan (F2) are provided so that they can be operated (controlled) according to each purpose, that is, when moisture collection in the moisture adsorption unit (11) is required, only the intake fan (F1) is operated or the exhaust fan (F2) is decelerated, and when the temperature of the moisture adsorption unit (11) rises due to the operation of the heating unit (13) and the moisture collection capacity decreases, the exhaust fan (F2) is mainly operated.

[0070] The dehumidifying water purifier of the present invention may additionally be equipped with an air purification unit at the housing inlet end, that is, in front of the intake fan (F). The air purification unit purifies the incoming air by removing foreign substances and may include a purification filter, an air quality meter, etc. The purification filter may include a carbon filter, a HEPA filter, etc., to remove foreign substances from the air, and the air quality meter may be installed on one side of the housing to determine whether the air purification unit is operating by measuring the air quality.

[0071] The dehumidifying water purifier of the present invention may include an adsorption unit temperature sensor for measuring the temperature of the moisture adsorption unit (11) in relation to the operation of the exhaust fan (F2), and an outside air temperature sensor for measuring the temperature of the outside air. Through this, the exhaust fan (F2) can be operated to cool the moisture adsorption unit (11) until the temperature of the moisture adsorption unit (11) becomes lower than the temperature of the outside air.

[0072] The dehumidifying water purifier of the present invention may include a control unit (not shown). The control unit controls the operation of an intake fan (F1), an exhaust fan (F2), etc., according to the difference between the temperature of the moisture adsorption unit (11) and the external air temperature, and controls the operation of a heating unit (13), a condensate generating unit (20), etc., according to the weight of the moisture adsorption unit (11).

[0074] FIG. 2 is a flowchart illustrating a first driving method of a dehumidifying water purifier that can be driven in a low-temperature environment according to the present invention.

[0075] As illustrated in FIG. 2, the first driving method of the dehumidifying water purifier according to the present invention may, in the first step (S10), operate an intake fan (F1) to introduce external air into the moisture adsorption part (11). The intake fan (F1) may be located at the front (inlet end) of the moisture adsorption part (11).

[0076] In the second step (S20), the weight measuring unit (12) can measure the weight of the moisture adsorption unit (11) and transmit it to the control unit (not shown). The weight of the moisture adsorption unit (11) can be used as data to determine whether the adsorbed moisture of the moisture adsorption unit (11) has reached a level sufficient to generate purified water.

[0077] In the third step (S30), the control unit (not shown) can determine whether the weight of the moisture adsorption unit (11) is greater than or equal to the reference weight.

[0078] In the fourth step (S40), if the weight of the moisture adsorption unit (11) is greater than or equal to the reference weight, the control unit (not shown) can operate the heating unit (13). The heating unit (13) can apply microwaves to the moisture adsorption unit (11) to evaporate the adsorbed moisture. The evaporated moisture can be moved to the condensate generation unit (20) by the intake fan (F1).

[0079] In the fourth step (S40), the control unit (not shown) may operate the condensate generating unit (20) simultaneously with or sequentially with the operation of the heating unit (13). The condensate generating unit (20) may generate condensate by condensing evaporated moisture.

[0080] In the fourth step (S40), the condensate generating unit (20) can be separated into a first condensate generating unit (21) and a second condensate generating unit (22). In this case, the condensate generation can be performed sequentially in the fourth step (4-1) of generating a first condensate by condensing the evaporated moisture in the first condensate generating unit (21) and in the fourth step (4-2) of generating a second condensate by condensing the residue of the evaporated moisture in the second condensate generating unit.

[0081] In the fifth step (S50), the weight measuring unit (12) can measure the weight of the moisture adsorption unit (11) again and transmit it to the control unit (not shown). The weight of the moisture adsorption unit (11) may gradually decrease due to the evaporation of the adsorbed moisture, and as a result, the weight of the moisture adsorption unit (11) measured in the fifth step (S50) can be used as data to determine whether the moisture adsorption unit (11) can perform moisture adsorption again.

[0082] In step 6 (S60), the control unit (not shown) can determine whether the weight of the moisture adsorption unit (11) is less than the reference weight.

[0083] In step 7 (S70), if the weight of the moisture adsorption unit (11) is less than the reference weight, the control unit (not shown) may stop the heating unit (13) to terminate moisture evaporation. At this time, since the moisture adsorption unit (11) is heated by the heating unit (13) and has a high temperature, it must be lowered to a temperature suitable for moisture adsorption. To this end, in step 7 (S70), the exhaust fan (F2) may be operated simultaneously with or sequentially with the stopping of the heating unit (13) to cool the moisture adsorption unit (11).

[0084] In step 7 (S70), the control unit (not shown) may stop the condensate generating unit (20) when the heating unit (13) is stopped, but since evaporated moisture may remain around the condensate generating unit (20) even when the heating unit (13) is stopped, it is acceptable to keep the condensate generating unit (20) running.

[0085] In step 7 (S70), the exhaust fan (F2) is used to cool the moisture adsorption unit (11) because the exhaust fan (F2) is more effective than the intake fan (F1) in cooling the heat of the moisture adsorption unit (11). According to experiments, the intake fan (F1) contributes primarily to the moisture adsorption of the moisture adsorption unit (11), while the exhaust fan (F2) creates a strong airflow inside, which actually hinders the moisture adsorption of the moisture adsorption unit (11). Therefore, when the moisture adsorption unit (11) adsorbs moisture, it is desirable to operate the intake fan (F1) at the inlet end and stop or operate the exhaust fan (F2) at the outlet end very weakly. Conversely, when cooling the moisture adsorption unit (11), it is desirable to stop or operate the intake fan (F1) at the inlet end weakly and operate the exhaust fan (F2) strongly.

[0086] In step 8 (S80), the control unit (not shown) receives the temperature of the moisture adsorption unit (11) and the outside air temperature from the adsorption unit temperature sensor and the outside air temperature sensor, and then determines whether the temperature of the moisture adsorption unit (11) is lower than the outside air temperature.

[0087] In step 9 (S90), if the temperature of the moisture adsorption unit (11) is below the external air temperature, the control unit (not shown) can stop the exhaust fan (F2) or reduce it to a very low speed.

[0088] Afterward, the first driving method of the dehumidifying water purifier can move to the second step (S20) after the ninth step (S90), and then repeat the second step (S20) through the ninth step (S90).

[0090] FIG. 3 is a flowchart illustrating a second driving method of a dehumidifying water purifier that can be driven in a low-temperature environment according to the present invention.

[0091] As illustrated in FIG. 3, the second driving method of a dehumidifying water purifier according to the present invention may further include the step of stopping the intake fan (F1) in the seventh step (S70) of the first driving method described above. In this case, after the ninth step (S90), the process may be repeated by moving to the first step (S10) and performing the first step (S10) through the ninth step (S90).

[0092] Since the remaining steps of the second driving method are identical to the corresponding steps of the first driving method, the detailed description of the remaining steps of the second driving invention is replaced by the description of the corresponding steps of the first driving method.

[0094] The present invention has been described above by way of examples, which are intended to illustrate the invention. A person skilled in the art may modify or alter these examples in other forms. However, since the scope of the present invention is defined by the claims below, such modifications or alterations may be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0095] 10: Dehumidification unit 11: Moisture adsorption part 12: Weight measuring part 13: Heating part 20: Condensate generating unit 21: First condensate generating unit 22: Second condensate generating unit 30 : Storage tank 40 : Integer part F1 : Intake fan F2: Exhaust fan

Claims

Claim 1 A method for operating a dehumidifying water purifier capable of operating in a low-temperature environment, comprising: a first step of operating an intake fan to guide external air to a moisture adsorption unit; a second step of measuring the weight of the moisture adsorption unit using a weight measuring unit; a third step of determining whether the weight of the moisture adsorption unit is greater than or equal to a reference weight; a fourth step of, if the weight of the moisture adsorption unit is greater than or equal to the reference weight, operating a heating unit to evaporate the adsorbed moisture of the moisture adsorption unit and operating a condensate generation unit to condense the evaporated moisture to generate condensate; a fifth step of measuring the weight of the moisture adsorption unit using the weight measuring unit; a sixth step of determining whether the weight of the moisture adsorption unit is less than the reference weight; a seventh step of, if the weight of the moisture adsorption unit is less than the reference weight, stopping the heating unit and the intake fan and operating an exhaust fan to cool the moisture adsorption unit; an eighth step of measuring the temperature of the moisture adsorption unit to determine whether the temperature of the moisture adsorption unit is less than the external air temperature; and a ninth step of stopping the exhaust fan if the temperature of the moisture adsorption unit is less than the external air temperature, wherein after the ninth step, the method moves to the first step and repeats the first to ninth steps. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A method for operating a dehumidifying water purifier capable of operating in a low-temperature environment, wherein the fourth step separates the condensate generating unit into a first condensate generating unit and a second condensate generating unit, and sequentially performs a 3-1 step of generating a primary condensate from the evaporated moisture in the first condensate generating unit and a 3-2 step of generating a secondary condensate from the residue of the evaporated moisture in the second condensate generating unit.

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