KR102043170B1 - Overload protection method and apparatus for air cleaning dehumidifier - Google Patents

Overload protection method and apparatus for air cleaning dehumidifier Download PDF

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Publication number
KR102043170B1
KR102043170B1 KR1020120097692A KR20120097692A KR102043170B1 KR 102043170 B1 KR102043170 B1 KR 102043170B1 KR 1020120097692 A KR1020120097692 A KR 1020120097692A KR 20120097692 A KR20120097692 A KR 20120097692A KR 102043170 B1 KR102043170 B1 KR 102043170B1
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South Korea
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air
overload
dehumidifying
compressor
heat exchanger
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KR1020120097692A
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Korean (ko)
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KR20130054908A (en
Inventor
홍현진
박찬정
박명진
강상우
이찬용
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웅진코웨이 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Drying Of Gases (AREA)

Abstract

The present invention relates to an overload control method and a dehumidifying air purifier using the same, the dehumidifying air purifier according to an embodiment of the present invention includes a filter for filtering contaminants contained in the air introduced into the interior; Dehumidifying unit for removing the water vapor contained in the incoming air; A blowing fan that rotates by a motor and introduces outside air into the inside; And a control unit for monitoring whether an overload is applied to the dehumidifying unit and increasing the rotational speed of the blowing fan when the overload is detected.

Description

Overload control method and dehumidifier air cleaner using the same {Overload protection method and apparatus for air cleaning dehumidifier}

The present invention relates to an overload control method and a dehumidified air purifier using the same, and more particularly, to an overload control method and a dehumidified air purifier using the same that can eliminate the overload generated when heat exchange is not smooth in the dehumidified air purifier. .

Maintaining adequate humidity (eg, 40% to 60%) of indoor air can help prevent breathing disorders and diseases, and create a pleasant indoor atmosphere. If the humidity in the air is too high, decay, corrosion and condensation may occur, odor and bacterium may also occur, it is necessary to control the humidity in the air.

The dehumidifier is a device that controls the humidity of the indoor space by removing the moisture contained in the air, the dehumidifier can remove the moisture in the air by using a refrigeration cycle consisting of a compressor, a condenser and a heat exchanger. That is, moisture in the air is removed by condensing water vapor contained in the air into water in the heat exchanger.

However, in the case of using the dehumidifier, especially when used in a high temperature environment, such as summer, when the heat exchange in the heat exchanger is not made smoothly, the compressor is overheated and damaged or the operation of the compressor is stopped May occur.

That is, there is a problem such as not providing a dehumidification function properly in a high temperature environment, such as summer, there was a user complaints about this.

The present invention is to provide an overload control method and a dehumidified air cleaner using the same.

Dehumidifying air purifier according to an embodiment of the present invention, the filter unit for filtering the contaminants contained in the air flowing into the interior; Dehumidifying unit for removing the water vapor contained in the incoming air; A blowing fan that rotates by a motor and introduces outside air into the inside; And a control unit for monitoring whether an overload is applied to the dehumidifying unit and increasing the rotational speed of the blowing fan when the overload is detected.

Here, the control unit may increase the rotational speed of the blowing fan to an overload driving speed of 400rpm or more and 1000rpm or less.

Here, the controller may monitor whether an overload is applied to the dehumidifying unit by using at least one of a temperature value of the dehumidifying unit and a supply current supplied to the dehumidifying unit.

Here, the dehumidifying unit, a compressor for compressing the refrigerant gas; A condenser for liquefying the compressed refrigerant gas; And a heat exchanger that vaporizes the liquefied refrigerant gas to cool the introduced air, and converts water vapor in the introduced air into water by removing the cooled air.

Here, the controller may monitor whether the overload is applied to the dehumidifying unit by using at least one of the surface temperature of the heat exchanger and the supply current supplied to the compressor.

The control unit may determine that an overload is applied to the dehumidifying unit when at least one of the case where the surface temperature of the heat exchanger is equal to or greater than the reference temperature and the magnitude of the supply current supplied to the compressor is equal to or greater than the reference current. can do.

The controller may increase the rotational speed of the blower fan to a preset rotational speed when the surface temperature of the heat exchanger is not measured or when the measured surface temperature is out of a preset temperature range.

The controller may increase the rotational speed of the blower fan to a preset rotational speed when the supply current supplied to the compressor is not measured or the measured supply current is out of a preset supply current range.

The controller may measure an external humidity when a recommended humidity operation signal is input, and operate the dehumidifying unit when the measured humidity is greater than 60%.

An overload control method of a dehumidifying air cleaner according to an embodiment of the present invention includes a filtering step of filtering contaminants by using a filter on air introduced by an air flow formed by a blower fan; A dehumidifying step of operating the dehumidifying mode by compressing the refrigerant gas by using a compressor, liquefying the refrigerant gas by a condenser, and then vaporizing the refrigerant gas by a heat exchanger to cool the air introduced therein, thereby removing the water vapor in the introduced air. ; Monitoring whether the overload is applied to the compressor, and overload mode switching step of increasing the rotational speed of the blower fan when the overload is detected; And a dehumidification mode returning step of returning to the dehumidification step when the overload applied to the compressor is eliminated.

The overload mode switching step may monitor whether the overload is applied to the compressor using at least one of the surface temperature of the heat exchanger and the supply current supplied to the compressor.

In the overload mode switching step, it is determined that an overload is applied to the compressor when at least one of the case where the surface temperature of the heat exchanger is equal to or greater than the reference temperature and the supply current supplied to the compressor is equal to or greater than the reference current. can do.

Here, the overload control method of the dehumidifying air cleaner may further include a recommended humidity operation step of measuring an external humidity when a recommended humidity operation signal is input, and performing the dehumidification step when the measured humidity is greater than 60%.

An overload control method and a dehumidifying air cleaner using the same according to an embodiment of the present invention can provide a dehumidifying function stably even in a high temperature environment such as in summer. In addition, since it is possible to eliminate the overload generated in the dehumidified air cleaner without additional configuration, it is possible to save energy and reduce costs.

The overload control method and the dehumidified air cleaner using the same according to an embodiment of the present invention have an effect of automatically controlling the indoor humidity to maintain the recommended humidity.

1 is a block diagram showing a dehumidifying air purifier according to an embodiment of the present invention.
2 is a flowchart illustrating a method for controlling overload in a dehumidifying air cleaner according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. However, in describing the preferred embodiment of the present invention in detail, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when a part is 'connected' to another part, it is not only 'directly connected' but also 'indirectly connected' with another element in between. Include. In addition, the term 'comprising' of an element means that the element may further include other elements, not to exclude other elements unless specifically stated otherwise.

1 is a block diagram showing a dehumidifying air purifier according to an embodiment of the present invention.

Referring to Figure 1, the dehumidifying air purifier according to an embodiment of the present invention, the filter unit 10, 10 ', the dehumidifying unit 20, the blowing fan 30, the control unit 40, the temperature sensor 50 And a humidity sensor 60.

Hereinafter, a dehumidifying air purifier according to an embodiment of the present invention will be described with reference to FIG. 1.

The filter units 10 and 10 ′ may filter out contaminants contained in air introduced into the filter unit 10 and 10 ′. The filter units 10 and 10 ′ may remove the contaminants by adsorbing contaminants in the air introduced by the blowing fan 30.

The filter unit 10, 10 ′ may be divided into a first filter unit 10 and a second filter unit 10 ′ as shown in the drawing, and a plurality of filter units 10. Filters may be included. The first filter unit 10 may include a prefilter and a functional filter, and the second filter unit 10 'may include a HEPA filter, a high efficiency particulate air filter, a deodorization filter, and the like. This may be included. The pretreatment filter may perform a function of removing a relatively large dust, hair, pet hair, etc., the functional filter may remove antibacterial, pollen, mites, bacteria, bacteria and the like. In addition, the hepa filter may remove various dusts such as fine dust, indoor mold, and the like, and the deodorization filter may perform a function of removing various odors and harmful gases in the room. As used herein, the filter units 10 and 10 'may be any type of filter generally used in an air cleaner.

The dehumidifying unit 20 may remove water vapor contained in the introduced air. The dehumidifying unit 20 may be a cooling method for reducing the amount of water vapor included in the air by cooling the air introduced. Specifically, the dehumidifying unit 20 may include a compressor 21, a condenser 22, a heat exchanger 23, and a drip tray 23.

The compressor 21 may compress the refrigerant gas, and the condenser 22 may liquefy the refrigerant gas compressed by the compressor 21. After the refrigerant gas is evaporated and expanded in the heat exchanger 23, the refrigerant gas may flow into the compressor 21 and be compressed again. That is, the refrigerant gas may be repeatedly phase changed while circulating the compressor 21, the condenser 22, and the heat exchanger.

The configuration of the compressor 21 and the condenser 22 may be generally used in the dehumidifier. The refrigerant gas may be R-22 which is generally utilized as a refrigerant such as a dehumidifier, and may be used as long as the refrigerant gas may be utilized as a refrigerant in a dehumidifier. In addition, the compressor 21 may compress the refrigerant gas by using an electric motor, and the operation of the compressor 21, that is, the electric motor may be controlled by the controller 40. The magnitude of the current supplied to the electric motor may be input to the controller 40.

The heat exchanger 23 may vaporize the liquefied refrigerant gas to cool the introduced air, and convert the water vapor in the introduced air into water by removing the cooled air. The heat exchanger 23 may vaporize the refrigerant gas compressed and liquefied by the compressor 21 and the condenser 22. The refrigerant gas is vaporized to absorb the heat of the surroundings, and thus the air introduced into the heat exchanger 23 may be cooled. The cooled air reaches a dew point, and water vapor in the air can be liquefied into water and removed from the air. The liquefied water may be collected in the drip tray 24 provided at the lower end of the heat exchanger 23. Therefore, the air passing through the heat exchanger 23 may be replaced with dry air by removing the water vapor contained therein. That is, the dehumidifying unit 20 may include the compressor 21, the condenser 22, and the heat exchanger 23 to perform a dehumidifying function of removing water vapor from the air introduced therein.

However, heat exchange in the heat exchanger 23 may be greatly affected by the surface temperature of the heat exchanger 23. That is, when the surface temperature of the heat exchanger 23 rises above a specific temperature (overload temperature), it may be difficult to cool the air introduced into the heat exchanger 23 to the dew point. Therefore, it is necessary to liquefy more refrigerant gas in order to cool the introduced air, in which case a larger current can be applied to the compressor 21.

At this time, if the current value supplied to the compressor rises above the preset current value, the compressor 21 may be overheated and damaged. Therefore, when the magnitude of the current applied to the compressor 21 is greater than or equal to the preset current value, the compressor protection device provided in the compressor 21 may operate to automatically stop the operation of the compressor 21. . Specifically, the compressor protection device may block the power supply applied to the compressor 21.

The blowing fan 30 is rotated by a motor and can introduce external air into the inside. The motor for rotating the blower fan 30 may be a motor separate from the electric motor for operating the compressor 21. The rotational speed of the blower fan 30 may be controlled by the controller 40, and the amount of external air introduced into the dehumidifying air cleaner may vary according to the rotational speed.

The rotational speed of the blower fan 30 may vary depending on the mode of the dehumidified air purifier, and when the dehumidified air purifier operates in the air cleaning mode, it may operate at a higher rotation speed than when operating in the normal dehumidification mode. Can be. Therefore, the dehumidifying air cleaner according to an embodiment of the present invention may have a rotation speed range of the blowing fan 30 wider than a general dehumidifying apparatus.

The blowing fan 30 may rotate at an overload driving speed in the overload mode, and the overload driving speed may be higher than a rotation speed used in a general dehumidifier. That is, in the overload mode, the dehumidifying unit 20 may be cooled by increasing the rotation speed of the blowing fan 30. Specifically, external air supplied by the blower fan 30 absorbs heat from the compressor 21 and prevents the compressor 21 from overheating. Therefore, the compressor protection device of the compressor 21 does not operate, and the dehumidifying unit 20 may continue to perform a dehumidifying function. However, since the speed of the blower fan 30 is higher than the rotation speed used in the general dehumidification mode in the overload mode, the dehumidification performance of the dehumidifying unit 20 may be degraded in the overload mode.

The controller 40 may monitor whether the overload is applied to the dehumidifying unit 20, and may increase the rotation speed of the blowing fan 30 when the overload is detected. As described above, when the temperature of the dehumidifying unit 20 such as the heat exchanger 23 rises above the overload temperature, the dehumidifying unit 20 may be overloaded, so that the control unit 40 may control the dehumidifying unit 20. Control to relieve overload.

In order to eliminate the overload, it is first necessary to first determine whether the overload has occurred in the dehumidifying unit 20. To this end, the control unit 40 may measure the temperature of the dehumidifying unit 20 by using the temperature sensor 50 or receive the magnitude of the current flowing into the electric motor from the compressor 21. . That is, the controller 40 determines whether an overload has occurred in the dehumidifying unit 20 using at least one of a temperature value of the dehumidifying unit 20 and a supply current supplied to the dehumidifying unit 20. can do.

Specifically, when the surface temperature of the heat exchanger 23 is received from the temperature sensor 50 and the dehumidifying unit 20 is received, and the received temperature value is equal to or greater than a reference temperature value, the heat exchanger 23 is overloaded. It can be determined that there is a jam. Alternatively, when the magnitude of the supply current supplied to the dehumidification unit 20 is received, more specifically, the magnitude of the supply current supplied to the compressor 21 is input, and the magnitude of the supply current is greater than or equal to a reference current value, the dehumidification unit 20 is provided. ) Can be determined to be overloaded. Here, it is determined that the dehumidifying unit 20 is overloaded when the surface temperature value of the heat exchanger 23 is equal to or greater than the reference temperature value and the magnitude of the supply current applied to the compressor 21 is equal to or greater than the reference current value. Alternatively, when the surface temperature value of the heat exchanger 23 is equal to or greater than the reference temperature value or the magnitude of the supply current applied to the compressor 21 is equal to or greater than the reference current value, it may be determined that an overload is applied.

In addition, when the temperature sensor 50 measuring the temperature of the dehumidifying unit 20 is broken, for example, the surface temperature of the heat exchanger 23 is not measured or the measured surface temperature is measured by the temperature sensor 50. When the temperature is outside the measurable range, the rotation speed of the blowing fan 30 may be increased to a preset speed. When the temperature sensor 50 is broken, it is not possible to determine whether an overload occurs in the dehumidifying unit 20, and thus, to prevent the overload by increasing the rotation speed of the blower fan 30 in advance. In addition, when the temperature sensor 50 has failed, it is also possible to operate in the overload mode for each preset overload period. Instead of maintaining the rotational speed of the blower fan 30 continuously, it is possible to periodically enter the overload mode to prevent the overload of the dehumidifying unit 20.

Similarly, when a configuration of an ammeter or the like which measures the magnitude of the supply current applied to the dehumidifying unit 20 is broken, for example, the supply current supplied to the compressor 21 is not measured or the measured supply current is preset. When it is measured that it is out of the range of the supply current, the rotational speed of the blowing fan 30 can be increased to a predetermined speed. If the ammeter for measuring the magnitude of the supply current is broken, it is not possible to determine whether an overload occurs in the dehumidifying unit 20, and thus, by increasing the rotational speed of the blowing fan 30 in advance, it is possible to prevent the overload. . As a result of the determination of the overload, if it is determined that the dehumidifying unit 20 is overloaded, the control unit 20 may switch the operation mode of the dehumidifying air cleaner to the overload mode.

In the overload mode, the dehumidified air cleaner may first perform an operation for releasing the overload of the dehumidifying unit 20. Specifically, it may be to increase the rotational speed of the blowing fan (30). Specifically, the overload driving speed is a rotational speed of at least the minimum rotational speed at which the blowing fan 30 operates in a general dehumidification operation, for example, may be 400rpm or more and 1000rpm or less. The blowing fan 30 may cool the dehumidifying unit 20 by operating at the overload driving speed. When the dehumidifying unit 20, more specifically, the compressor 21 is cooled, the overload of the dehumidifying unit 20 may be eliminated.

In addition, the controller 40 may operate in a recommended humidity mode. The recommended humidity mode may be a mode in which the dehumidifying operation is performed such that the external humidity is included in a preset recommended humidity range (for example, 40% to 60%). The recommended humidity mode may be activated according to a recommended humidity operation command input by a user using an interface unit (not shown) attached to the outside of the dehumidified air cleaner. That is, when the user inputs the recommended humidity operation command, the humidity control unit 20 operates the dehumidifying unit 20 to input the recommended humidity operation signal to the control unit 40 so that the humidity value of the outside air is included in the preset recommended humidity range. Can be. The controller 40 may receive an external humidity value measured by the humidity sensor 60 when the recommended humidity operation signal is input. When the external humidity value is greater than 60%, the control unit 40 may operate the dehumidification unit 20 to remove water vapor in the air so that the external humidity value is lowered to 60% or less, and the external humidity value. When the amount is between 40% and 60%, the dehumidification operation can be stopped.

2 is a flowchart illustrating a method for controlling overload of a dehumidifying air cleaner according to an embodiment of the present invention.

2, the overload control method of the dehumidified air purifier according to an embodiment of the present invention, the filtering step (S10), dehumidification step (S20), overload mode switching steps (S30, S40), dehumidification mode return step ( S50) and the recommended humidity operation step (S60).

Hereinafter, an overload control method of a dehumidifying air cleaner according to an embodiment of the present invention will be described with reference to FIG. 2.

In the filtering step S10, the contaminant may be filtered using a filter with respect to the air introduced by the air flow formed by the blowing fan. The filter may be divided into a first filter part that filters contaminants when air enters the dehumidified air purifier, and a second filter part that filters contaminants when the introduced air is discharged to the outside of the dehumidification air purifier. Each filter unit may include a plurality of filters. The first filter unit may include a pretreatment filter, a functional filter, and the like, and the second filter unit may include a hepa filter, a deodorization filter, and the like.

Dehumidifying step (S20), by compressing the refrigerant gas using a compressor, liquefied the refrigerant gas with a condenser, and then vaporizing the refrigerant gas with a heat exchanger to cool the incoming air to remove water vapor in the incoming air Can operate in dehumidification mode. When the dehumidifying air cleaner performs a dehumidifying operation of removing water vapor in the air, the dehumidifying air cleaner may operate in a dehumidifying mode using the compressor, the condenser, the heat exchanger, and the like.

However, heat exchange in the heat exchanger may be greatly affected by the surface temperature of the heat exchanger, and when the surface temperature of the heat exchanger is higher than the overload temperature, the heat exchange in the heat exchanger may not be performed smoothly. . In this case, the compressor may be overheated and a high current may flow in the compressor, and the operation of the compressor may be stopped to protect the compressor. Since the heat exchange in the heat exchanger is not smooth, the state in which the compressor is overheated and a high current flows may be referred to as an overload.

In the overload mode switching step (S30), it is possible to monitor whether the overload is applied to the dehumidifying unit, and if the overload is detected, increase the rotational speed of the blowing fan. When the compressor is stopped due to the overload, the dehumidified air cleaner stops the dehumidification operation, so that the control to prevent this may be performed.

First, in order to determine whether the compressor is overloaded, the surface temperature of the heat exchanger or the magnitude of the current supplied to the compressor may be measured, and the measured values may be compared with reference values. That is, it is possible to determine whether to switch to the overload mode by using at least one of the surface temperature of the heat exchanger and the supply current supplied to the compressor. Specifically, when the measured surface temperature of the heat exchanger and the magnitude of the compressor supply current are larger than the reference temperature value and the reference current value, the overload may be determined. If it is determined that the overload, the dehumidification air purifier may be operated in the overload mode for releasing the overload in order to eliminate the overload.

Thereafter, when the overload mode is switched, the rotation speed of the blowing fan may be increased. The blowing fan is to introduce external air into the dehumidified air purifier, and may form a flow of air through rotation. The blowing fan not only has a dehumidification function but also performs an operation for an air cleaning function, and thus may have a wider rotation speed range than a general dehumidifier. Accordingly, the blowing fan may operate at an overload driving speed that is faster than the rotation speed of a general dehumidifier in the overload mode, and the external air supplied by the blowing fan may absorb heat of the compressor to cool the compressor. have. In general, the overload driving speed may be a rotational speed exceeding a minimum rotational speed at which the blowing fan performs a dehumidification function, and the overload driving speed may be, for example, 400 rpm or more and 1000 rpm or less. Like the salpin bar, when the compressor is cooled, it is no longer necessary to stop the operation of the compressor for protecting the compressor, and the dehumidification operation may be continuously performed.

In addition, when the temperature sensor for measuring the surface temperature of the heat exchanger is broken, for example, when the surface temperature of the heat exchanger is not measured or the measured surface temperature is outside the preset temperature range, the rotational speed of the blower fan It is also possible to increase the to a predetermined rotation speed. If the temperature sensor is broken, it is not possible to determine whether an overload occurs in the compressor, so that the overload may be prevented by increasing the rotation speed of the blowing fan in advance. Further, it is also possible to prevent the overload of the compressor by operating in the overload mode at each preset overload period. That is, instead of continuing to maintain the state of increasing the rotational speed of the blowing fan, it is possible to prevent the overload of the dehumidifying unit by entering the overload mode at regular intervals. Here, a case where the temperature sensor has failed is illustrated, but the present invention can also be applied to a case where the ammeter for measuring the supply current applied to the compressor has failed.

The dehumidification mode returning step S50 may return to the dehumidification step when the overload applied to the compressor is eliminated. In the overload mode switching step (S30, S40) to increase the speed of the blower fan to the overload driving speed in order to cool the compressor, the dehumidification performance may be lower than the normal dehumidification operation. Therefore, when the surface temperature of the heat exchanger falls below the reference temperature or the supply current of the compressor falls below the reference current value, the heat exchanger may return to the dehumidification mode from the overload mode.

Recommended humidity operation step (S60), if the humidity value of the outside air is more than 60% by performing the dehumidification step (S20), the humidity value of the introduced air is set to the predetermined recommended humidity range (for example, 40% ~ 60%). The dehumidified air cleaner may operate in a recommended humidity mode for maintaining external air in a preset recommended humidity range, which is recommended by a user using an interface unit that can be attached to the outside of the dehumidified air cleaner. It can be activated by a signal. In the recommended humidity mode, the external humidity value measured by the humidity sensor may be input, and when the external humidity value is more than 60%, the dehumidification step S20 may be performed. Thereafter, when the external humidity value is between 40% and 60%, the operation of the dehumidifying step S20 may be stopped.

For reference, in the above description, although each step is expressed as being performed sequentially, these steps may be performed in parallel as necessary, or the order may be changed.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It is intended that the scope of the invention be defined by the appended claims, and that various forms of substitution, modification, and alteration are possible without departing from the spirit of the invention as set forth in the claims. Will be self-explanatory.

10: filter unit 20: dehumidifying unit
21: Compressor 22: Condenser
23: heat exchanger 24: water reservoir
30: blowing fan 40: control unit
50: temperature sensor 60: humidity sensor
S10: filtering step S20: dehumidification step
S30, S40: Overload mode switching step S50: Dehumidification mode returning step
S60: recommended humidity level

Claims (13)

Filter unit for filtering the contaminants contained in the air flowing into the interior;
A dehumidifying unit including a heat exchanger for converting and removing water vapor contained in the introduced air into water;
A blowing fan that rotates by a motor and introduces outside air into the inside; And
When the surface temperature of the heat exchanger is higher than the reference temperature value, the control unit for increasing the rotational speed of the blowing fan,
The dehumidifying unit
A compressor for compressing the refrigerant gas; And
Further comprising a condenser for liquefying the compressed refrigerant gas,
The heat exchanger is a dehumidified air purifier for vaporizing the liquefied refrigerant gas to cool the introduced air, and converts the water vapor in the introduced air into water by cooling the introduced air.
The method of claim 1, wherein the control unit
Dehumidifier air cleaner to increase the rotational speed of the blowing fan to overload driving speed of 400rpm or more and 1000rpm or less
The method of claim 1, wherein the control unit
Dehumidifying air cleaner to increase the rotational speed of the blowing fan when the supply current supplied to the dehumidifying unit is more than the reference current value.
delete delete delete The method of claim 1, wherein the control unit
When the surface temperature of the heat exchanger is not measured or the measured surface temperature is out of a predetermined temperature range, the dehumidifying air cleaner to increase the rotational speed of the blower fan to a predetermined rotational speed at each preset overload cycle.
The method of claim 1, wherein the control unit
The dehumidifier air purifier may increase the rotational speed of the blower fan at a predetermined rotational speed every predetermined overload period when the supply current supplied to the compressor is not measured or the measured supply current is out of a preset supply current range.
The method of claim 1, wherein the control unit
Dehumidifying air purifier to operate the dehumidifying unit when the measured humidity of the outside air is measured when the recommended humidity operation signal is input to include the humidity value of the outside air in the preset recommended humidity range.
A filtering step of filtering contaminants from the air introduced by the air flow formed by the blower fan using a filter;
A dehumidifying step of operating the dehumidifying mode by compressing the refrigerant gas by using a compressor, liquefying the refrigerant gas by a condenser, and then vaporizing the refrigerant gas by a heat exchanger to cool the air introduced therein, thereby removing the water vapor in the introduced air. ;
An overload mode switching step of increasing a rotation speed of the blower fan when the surface temperature of the heat exchanger is equal to or greater than a reference temperature value; And
And a dehumidification mode returning step of returning to the dehumidification step when the overload applied to the compressor is eliminated.
delete delete The method of claim 10,
If the humidity value of the outside air is more than 60% by performing the dehumidification step, the overload control method of the dehumidification air cleaner further comprises a recommended humidity operation step of maintaining the humidity value of the outside air within a preset recommended humidity range.
KR1020120097692A 2011-11-17 2012-09-04 Overload protection method and apparatus for air cleaning dehumidifier KR102043170B1 (en)

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