KR20100032226A - Ductless dryer and controlling method thereof - Google Patents

Abstract

PURPOSE: A ductless dryer and a control method thereof are provided to discharge air, in which the temperature and humidity are controlled, to outside, and to appropriately supply cooling water. CONSTITUTION: A control method of a ductless dryer is as follows. Water is sprayed to a heat exchanging unit for a predetermined time(SP1). The pressure of the water supplied to the dryer is sensed based on the sprayed water. If the sprayed water is more than standard water, the water is decided as full water(SP3). A normal water pressure is decided if the sprayed water is more than the standard water before the determined time passes(SP4).

Description

Ductless Dryer And Controlling Method Thereof

The present invention relates to a ductless dryer and its control method, and more particularly, to determine whether the water supplied to the dryer and the low water pressure of the water supplied to the dryer based on the amount of water sprayed by the heat exchange unit to perform a drying administration. It relates to a ductless dryer and its control method.

In general, a clothes dryer is a device that blows hot air generated by a heater into a drum to absorb moisture of a drying object and to dry the drying object. Treatment of wet air generated by drying a drying object by absorbing moisture According to the method, it is classified into exhaust type clothes dryer and condensation clothes dryer.

Exhaust type clothes dryer uses a method of exhausting the humid air discharged from the drum to the outside of the dryer. However, an exhaust duct for exhausting the vaporized water in the drum to the outside is required, and in particular, since the combustion product carbon monoxide and the like are exhausted, there is a disadvantage in that the exhaust duct must be extended to be installed outside.

On the other hand, the condensation type clothes dryer uses a method of condensing the humid air exhausted from the drum in the heat exchanger to remove moisture, and then sending the removed dry air back to the drum for recycling. However, it is not easy to use gas as a heat source because dry flow forms a closed loop.

The ductless dryer is a dryer that overcomes the disadvantages of the exhaust type clothes dryer and the condensation type clothes dryer. That is, the ductless dryer can be maintained at low cost by using gas as a heat source, and there is an advantage of not having to install a separate exhaust duct extending to the outside.

However, the conventional ductless dryer has a problem that it does not detect the single stage or low water pressure does not properly supply the cooling water.

In addition, the conventional ductless dryer has a problem of discharging the uncontrolled temperature and humidity of the dry laundry by supplying the cooling water and drying the dry laundry in the state of not detecting the single or low water pressure.

The present invention is to solve the above problems, an object of the present invention, by spraying water to the heat exchange unit to remove the moisture contained in the air discharged from the drum and the number of water supplied to the dryer based on the amount of water injected and The present invention provides a ductless dryer and a control method thereof in which cooling water is appropriately supplied by determining low water pressure, a drying stroke is performed using the cooling water, and a temperature and humidity of the dry laundry are discharged to the outside. have.

Ductless dryer according to the present invention for achieving the above object is a drum containing a drying object, rotatably installed in the main body, a heat exchange unit for removing moisture contained in the air discharged from the drum, and the heat exchange unit And a control unit which determines the pressure of the water supplied to the dryer based on the amount of water sprayed by spraying water.

Control method of the ductless dryer according to the present invention for achieving the above object is provided with a drum rotatably installed in the main body, a heat exchange unit for removing moisture contained in the air discharged from the drum, a predetermined time (t1) And spraying water onto the heat exchange unit, and sensing pressure of water supplied to the dryer based on the injected quantity.

According to the present invention it is possible to determine whether the water supplied to the ductless dryer and the low water pressure.

In addition, according to the present invention has the effect of supplying the appropriate cooling water by judging whether the water supplied to the ductless dryer and the low water pressure.

In addition, according to the present invention has the effect of reducing the environmental pollution by supplying a suitable cooling water to discharge the controlled air to the outside.

Hereinafter, with reference to the accompanying drawings will be described in detail a ductless dryer and its control method according to the present invention.

1 is a view schematically showing a ductless dryer according to the present invention, Figure 2 is a plan view showing the interior of the ductless dryer according to the present invention. 3 is a view schematically showing a heat exchange unit and a sensing unit part of a ductless dryer according to the present invention, and FIG. 4 is a view schematically showing a storage unit part of a ductless dryer according to the present invention.

1 to 4, the ductless dryer according to the first embodiment of the present invention accommodates a drying object, the drum 120 rotatably installed in the main body 110, and discharged from the drum 120. A heat exchange unit 150 for removing water contained in the air, and a control unit (not shown) for determining the pressure of the water supplied to the dryer based on the amount of water sprayed by spraying water to the heat exchange unit 150. It is configured to include. In addition, the cleaning unit for spraying water to the heat exchange unit 150 to clean the foreign matter adsorbed outside the heat exchange unit.

Here, the cleaning unit includes a spray unit 161a for injecting water into the heat exchange unit, and a first valve 161 for opening and closing the movement of the sprayed water. In addition, if necessary, it may include a pump for supplying water to the injection unit from the outside. In addition, it is preferable to use a spray nozzle as the injection unit 161a, and to use the solenoid valve as the first valve 161. Of course, similar devices or mechanisms can be used.

A door 111 for injecting clothes into the drum 120 is installed on the front surface of the main body 110, and a foot 113 for supporting the main body 110 is installed below the main body 110. In the main body 110, a belt 131 for rotating the drum 120 and a motor 135 for providing a driving force to the belt 131 are installed. The shaft of the motor 135 is provided with a pulley on which the belt 131 is caught.

The drum 120 is a barrel having an inner space to allow the clothes to be dried, etc. to be inserted therein, and a plurality of lifters 121 are installed therein to lift the clothes.

In addition, the ductless dryer further comprises a hot air supply unit 140 for supplying hot air into the drum 120, the hot air supply unit 140 is a gas valve 141 and a gas valve for supplying and blocking gas The gas burner 143 which mixes the gas exhausted from 141 with the air provided from the outside and ignites it to generate hot air, and the gas burner 143 and the drum 120 so that the generated hot air is supplied to the drum 120. It includes a hot air supply duct 145 for connecting. The flame wind may be installed in the hot air supply unit 140 by extending to the edge of the flame to detect the flame current and indirectly determine the generation amount of carbon monoxide (CO) through the value of the flame current. The gas valve 141 preferably uses a solenoid valve so as to adjust the gas injection amount sensitively. The gas combustor 143 is connected to the gas valve 141 and mixes and combusts the gas exhausted from the gas valve 141 and external air, and heats air with heat generated at this time. The hot air generated by heating is provided to the drum 120 through the hot air supply duct 145.

The heat exchange unit 150 is composed of a fin 151 and a tube 153, by condensing the hot and humid air exiting the drum 120 by the low-temperature water to a dry state by the heat exchange method of air to water. . The inlet of the heat exchange unit 150 is connected to the drum 120 by the circulation unit 180, and the outlet thereof is connected to the exhaust duct 181. The pin 151 is a thin metal plate having excellent conductivity, and the plurality of thin plates are stacked such that the plurality of thin plates contact and pass vertically with hot and humid air at minute intervals from each other. The tube 153 circulates with low temperature (eg, 22 ° C.) water and penetrates the fin 151 in a reciprocating manner. Both ends of the tube 153 are connected to a water hose (not shown) for supplying and recovering low temperature water. The bottom of the heat exchange unit 150 is provided with a drip tray (not shown) for collecting condensed water generated during the condensation process.

In addition, the ductless dryer according to the first embodiment of the present invention further includes a storage unit 170 for storing the water sprayed from the cleaning unit, that is, the cleaning water. At this time, the control unit determines the pressure of the water supplied to the dryer based on the quantity stored in the storage unit. Here, the control unit determines that only the number is stored if the stored quantity is more than the predetermined reference quantity. In addition, the control unit determines the normal water pressure when the quantity stored for a predetermined time t1 is greater than or equal to the preset reference quantity, and determines the low water pressure if the quantity stored for the predetermined time t2 is greater than or equal to the preset reference quantity. If the quantity stored during t2) is less than the predetermined reference quantity, it is determined as the singular.

The control unit may include a setting unit for setting the reference quantity, a comparison unit for comparing the preset reference quantity with the quantity stored in the storage unit 170, and a singular, low value based on a comparison result of the comparison unit. It may be configured to include a determination unit for determining whether the water pressure or full water.

In addition, in the ductless dryer according to the second embodiment of the present invention, the drying object is accommodated, and the drum 120 rotatably installed in the main body 110 and moisture contained in the air discharged from the drum 120. A heat exchange unit 150 to remove, a control unit (not shown) to determine the pressure of the water supplied to the dryer based on the amount of water injected by spraying water onto the heat exchange unit 150, and the heat exchange unit 150. The cleaning unit for cleaning the foreign matter adsorbed to the outside of the heat exchange unit by spraying water to the storage unit, a storage unit 170 for storing the water sprayed from the cleaning unit, and installed in the storage unit 170, It comprises a sensing unit 175 for sensing.

Description of some of the components of the ductless dryer according to the second embodiment of the present invention is replaced with the description of the components of the ductless dryer according to the first embodiment, and will be omitted below.

Here, the cleaning unit includes a spray unit 161a for injecting water into the heat exchange unit, and a first valve 161 for opening and closing the movement of the sprayed water. In addition, if necessary, it may include a pump for supplying water to the injection unit from the outside. In addition, it is preferable to use a spray nozzle as the injection unit 161a, and to use the solenoid valve as the first valve 161. Of course, similar devices or mechanisms can be used. In addition, the storage unit 170 includes a first storage unit 171, a second storage unit 173, and a sensing unit 175 for sensing the stored quantity. Here, it is preferable to use a water level sensor for sensing the height of the stored water as the detection unit 175.

In the ductless dryer according to the second embodiment of the present invention, the control unit is stored in the storage unit 170, the pressure of the water supplied to the dryer based on the quantity detected through the detection unit 175 To judge. Here, the control unit determines that the detected number is full if the quantity is more than the predetermined reference quantity. In addition, the control unit determines the normal water pressure when the quantity stored for a predetermined time t1 is greater than or equal to the preset reference quantity, and determines the low water pressure if the quantity stored for the predetermined time t2 is greater than or equal to the preset reference quantity. If the quantity stored during t2) is less than the predetermined reference quantity, it is determined as the singular.

The control unit may include a setting unit for setting the reference quantity, a comparison unit for comparing the preset reference quantity with the quantity stored in the storage unit 170, and a singular, low value based on a comparison result of the comparison unit. It may be configured to include a determination unit for determining whether the water pressure or full water.

In FIG. 3, reference numeral 163 denotes a second valve for supplying cooling water to the heat exchange unit 150, and reference numeral 165 denotes a cooling water connected to a drain pump and condensed water condensed through the heat exchange unit 150 to the first storage unit, or A third valve for draining the cleaning water and the like stored in the second storage unit to the outside.

In FIG. 4, reference numeral 171 denotes a first storage unit in which condensed water removed from a drying object by cooling water or cooling water is stored, and reference numeral 173 denotes a first storage unit in which cleaning water sprayed to remove lint adsorbed to the heat exchange unit 150 is stored. 2 storage unit.

Hereinafter, the configuration of the ductless dryer according to the present invention and the control method of the ductless dryer according to the present invention with reference to the accompanying Figure 5 will be described in detail.

Referring to FIG. 5, the control method of the ductless dryer according to the present invention includes spraying water to the heat exchange unit for a predetermined time t1 (SP1, SP5) and supplying the dryer to the dryer based on the quantity injected. It comprises a step (SP2-SP4, SP6-SP9) to detect the pressure of the water.

The step of detecting the pressure of the water includes a step of setting a reference amount of water (SP2), and the step of determining that the number of water is full (sp3) if the sprayed water is more than the set reference amount. In addition, the step of detecting the pressure of the water is configured to further include the step of determining the normal water pressure (SP4) if the sprayed water amount is more than the set reference water amount before a predetermined time (t1). At this time, if it is determined that the normal water pressure, the ductless dryer performs a drying stroke (SP11).

The step of detecting the pressure of the water is a step of setting a reference quantity (SP2), and if the injected quantity is more than the set reference quantity (SP3) and the sprayed quantity is less than the set reference quantity And spraying water to the heat exchanger for a predetermined time t2 (SP8), deciding full water based on the injected water quantity (SP6), and based on the determination result, And re-sensing the pressure. Here, the step of re-sensing the pressure of the water includes the step of determining the low water pressure (SP7) if the sprayed water quantity is more than the set reference amount before the predetermined time (t2) elapsed. Alternatively, the step of re-sensing the pressure of the water may include determining the number of stages (SP9) if the sprayed quantity is less than the set reference quantity. In this case, if it is determined that the low water pressure or the singular, it may further include the step of outputting an error message (SP10).

In general, after passing through the drum 120 in the ductless dryer through the heat exchange unit 150 before the high-temperature, high-humidity discharge air is discharged directly to the interior of the dryer outside the moisture is removed and the temperature is reduced. In this process, if the dryer is operated in a state in which the supply of the cooling water that causes condensation is not smooth or cut off due to various causes, the temperature and humidity of the room are rapidly increased. There is a need for a control algorithm that first determines whether the coolant is supplied at the proper water pressure or not at the stage, which can be solved according to the present invention.

As shown in FIG. 5, the control method according to the present invention sprays water in advance through an injection unit 161a (for example, a spray nozzle) for cleaning to the heat exchange unit 150 before the dryer operation, and detects the same. Check whether the quantity sprayed through the unit 175 (e.g., an electrode sensor, a water level sensor) reaches an appropriate quantity (standard quantity), and then, if the supply amount is sufficient as cooling water for dehumidification or externally, Determine whether or not.

Hereinafter, the case of the standard water pressure 2.5kgf / cm ² , when the injection for 5 seconds through the injection unit will be described by taking an example of a quantity of about 500g. First, the injection into the heat exchange unit 150 through the injection unit (161a) to determine the number and pressure (SP1). The 500g is set as the reference amount (SP2) and water is sprayed for a predetermined time (t1, for example, 5 seconds) to check whether the quantity stored in the storage unit is 500g. The injected water fills the second storage unit 173 first, and then fills the first storage unit 171. Here, it is determined whether the water is full on the basis of the quantity stored in the second storage unit 173 (SP3), if the water is full before the predetermined time (t1) (SP4). If it is determined that the normal water pressure, the user is notified by the notification message, or does not generate an error message to allow the user to perform the drying stroke (SP11).

After spraying water (SP1), it is determined whether a predetermined time t1 has elapsed (SP5). That is, it is determined whether or not full water for a predetermined time (t1) continuously (SP3) when the full water is reached before reaching a predetermined time (t1) (SP4), if a predetermined time (t1) elapses, if a predetermined time (t2, Continue spraying water (for example, set to 10 seconds) (SP8).

In addition, it is determined whether or not the water level is continuously for a predetermined time (t2) (SP6) when the water level is reached before reaching the predetermined time (t2), it is determined to be low water pressure (SP7), it is determined that the number of stages after the predetermined time (t2) has elapsed (SP9)

In the case of low water pressure or water level, the user may be notified by outputting an error message through the user screen or other communication means (SP10).

1 schematically shows a ductless dryer according to the invention;

2 is a plan view showing the interior of the ductless dryer according to the present invention;

Figure 3 schematically shows a heat exchange unit and a sensing unit part of the ductless dryer according to the present invention;

Figure 4 shows schematically a storage unit part of a ductless dryer according to the invention;

5 is a flowchart illustrating a control algorithm of the ductless dryer according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110: main body 111: door

113: foot 114: circular duct

120: drum 131: belt

133: fan 135: motor

140: hot air supply unit 141: valve

143: gas burner 145: hot air supply duct

150: heat exchange unit 151: fin

153: tube 161, 163, 165: valve

170, 171, 173: storage unit 175: sensing unit

180: circulation unit 181: exhaust duct

Claims (16)

A drum containing a drying object and rotatably installed in the main body; A heat exchange unit for removing moisture contained in air discharged from the drum; And And a control unit for injecting water into the heat exchange unit and determining a pressure of water supplied to the dryer based on the amount of sprayed water. According to claim 1, And a cleaning unit for spraying water on the heat exchange unit to clean foreign substances adsorbed to the outside of the heat exchange unit. The method of claim 2, wherein the cleaning unit, An injection unit for injecting water into the heat exchange unit; And And a first valve for opening and closing the movement of the sprayed water. The method of claim 2, Ductless dryer further comprises a storage unit for storing the water sprayed from the cleaning unit. The method of claim 4, wherein the control unit, Ductless dryer for determining the pressure of the water supplied to the dryer based on the stored quantity. The method of claim 4, wherein the control unit, Ductless dryer is determined to be full if the stored quantity is more than the predetermined reference quantity. The method of claim 5, wherein the control unit, If the stored quantity for a predetermined time (t1) is more than the predetermined reference quantity is determined as normal water pressure, If the stored quantity for a predetermined time (t2) is more than the predetermined reference quantity is determined as low water pressure, Ductless dryer for determining the number of stages if the stored quantity for a predetermined time (t2) is less than the predetermined reference quantity. The method according to any one of claims 4 to 7, Ductless dryer further comprises a; sensing unit installed in the storage unit, for sensing the stored quantity. The method of claim 8, wherein the detection unit, Ductless dryer characterized in that the water level sensor for detecting the height of the stored water. In the control method of the ductless dryer having a drum rotatably installed in the main body, and a heat exchange unit for removing water contained in the air discharged from the drum, Spraying water on the heat exchange unit for a predetermined time (t1); And And detecting the pressure of the water supplied to the dryer based on the injected quantity. The method of claim 10, wherein the detecting of the pressure of the water comprises: Setting a reference quantity; And And determining that the water injected amount is more than the set reference water quantity. The method of claim 11, wherein the detecting of the pressure of the water comprises: The control method of the ductless dryer further comprising the step of determining that the normal water pressure if the injected quantity of water before the predetermined time (t1) elapsed. The method of claim 11, wherein the detecting of the pressure of the water comprises: Injecting water into the heat exchanger for a predetermined time t2 when the injected quantity is less than the set reference quantity; Judging full water based on the injected quantity; And And re-sensing the pressure of the water supplied to the dryer based on the determination result. The method of claim 13, wherein the re-sensing the pressure of the water, And determining the low water pressure if the injected water amount is equal to or greater than the set reference water amount before the predetermined time (t2) elapses. The method of claim 13, wherein the re-sensing the pressure of the water, And determining the number of stages when the injected quantity is less than the set reference quantity. The method of claim 14 or 15, wherein the re-sensing the pressure of the water, If it is determined that the low water pressure or the singular, outputting an error message; Control method of a ductless dryer further comprising.

Images