KR101513626B1 - Ductless Dryer And Controlling Method Thereof - Google Patents

Abstract

A ductless dryer is started. The ductless dryers and the control method thereof according to the present invention include a condensing unit for condensing hot and humid air discharged from a drum into low temperature dried air, a cleaning unit for removing foreign substances adsorbed to the condensing unit by using cleaning water, And a drain unit for discharging the condensed water and the cleaning water condensed through the condensing unit to the outside. Thus, it is possible to overcome the disadvantages of the exhaust type clothes dryer and the condensation type clothes dryer, to maintain the low cost by using gas as a heat source, There is no need to provide a separate exhaust duct that is elongated in the longitudinal direction.

Ductless Dryer, Condensate, Drain, Clean

Description

[0001] Ductless Dryer and Controlling Method Thereof [0002]

The present invention relates to a ductless dryer and a control method thereof that overcomes disadvantages of an exhaust type clothes dryer and a condensable clothes dryer. More particularly, the present invention relates to a ductless dryer that can maintain a low cost by using gas as a heat source, The present invention relates to a ductless dryer and a control method thereof, in which a separate exhaust duct is not required to be provided.

Generally, a clothes dryer is a device for blowing hot air generated by a gas burner into a drum to absorb moisture of a drying object and to dry the object to be dried. The dryer is a device for absorbing moisture and drying Depending on the type of treatment, it is classified into an exhaust type clothes dryer and a condensation type clothes dryer.

The exhaust-type clothes dryer uses a method of exhausting the wet machine exhausted from the drum to the outside of the dryer. However, there is a problem in that an exhaust duct for exhausting the evaporated moisture in the drum to the outside is required, and carbon monoxide, which is a combustion product, is exhausted together, so that the exhaust duct must be extended to the outside.

On the other hand, the condensing clothes dryer uses a method of condensing the moisture vapor exhausted from the drum in the heat exchanger to remove moisture, and then recycling the moisture-free dry air to the drum again. However, there is a problem that it is not easy to use gas as a heat source because the dry flow forms a closed loop.

The present invention solves the above-described problems, and provides a ductless dryer and a control method thereof that do not require a separate exhaust duct that can be maintained at a low cost by using gas as a heat source and extend long outdoors. .

In order to achieve the above object, a ductless dryers according to the present invention are provided with a main body for forming an external appearance, a drum accommodating a drying object, a drum rotatably installed in the main body, a hot air supply unit for supplying hot air into the drum, A condensing unit for condensing the high-temperature and high-humidity air discharged from the drum using the cooling water into low-temperature dried air, a cleaning unit for removing foreign matter adsorbed to the condensing unit by using cleaning water, And a drainage unit for discharging the cleaning water to the outside.

According to another aspect of the present invention, there is provided a method of controlling a ductless dryers, the method comprising: drying an object to be dried using hot air; heating the hot and humid air generated in the drying step using cooling water to low- The method according to any one of the preceding claims, further comprising the steps of: condensing the condensed water, cleaning the foreign matter contained in the hot and humid air generated in the drying step using the cleaning water, and discharging the condensed condensed water through the cooling water, .

In the ductless dryers and the control method thereof according to the present invention, it is possible to maintain the ductless dryers at a low cost by using gas as a heat source, and it is not necessary to provide a separate exhaust duct extending to the outside.

In addition, according to the present invention, it is possible to prevent carbon monoxide, which is a combustion product, from being discharged, thereby preventing environmental pollution.

Meanwhile, by using gas as a heat source according to the present invention, user convenience can be improved.

In order to achieve the above object, a ductless dryers according to the present invention are provided with a main body for forming an external appearance, a drum accommodating a drying object, a drum rotatably installed in the main body, a hot air supply unit for supplying hot air into the drum, A condensing unit for condensing high temperature and high humidity air discharged from the drum by using low temperature and drying air using cooling water, a cleaning unit for removing foreign substances adsorbed by the condensing unit using cleaning water, And a drainage unit for discharging the cleaned water to the outside. The drainage unit discharges the cooling water to the outside according to the structure of the dryer. The apparatus further includes a driving motor for rotating the drum. Here, the hot air supply unit includes a gas combustor for heating the air supplied to the drum.

The condensing unit includes a heat exchange unit for heat-exchanging the high-temperature and high-humidity air discharged from the drum using the cooling water, and a water supply valve for opening and closing the movement of the cooling water. Further, it may further include a water supply pump for supplying the cooling water to the heat exchange unit from the outside as the case may be.

The cleaning unit includes a spray unit for spraying the cleaning water to the condensing unit, and a cleaning valve for opening and closing movement of the cleaning water to be sprayed. In addition, the cleaning unit may further include a cleaning pump for supplying the cleaning water from the outside to the injection unit.

The drainage unit includes a drain valve that opens and closes the movement of the condensed water and the cleaning water. The drainage unit may further include a drain pump for discharging the condensed water and the cleaning water to the outside. The drainage unit may further comprise a storage unit for storing the condensed water and the cleaning water. The drainage unit discharges the cooling water to the outside according to the structure of the dryer.

According to another aspect of the present invention, there is provided a method of controlling a ductless dryers, the method comprising: drying an object to be dried using hot air; heating the hot and humid air generated in the drying step using cooling water to low- The method comprising the steps of: condensing the water, cleaning the foreign matter contained in the hot and humid air generated in the drying step using the cleaning water, and draining the condensed condensed water through the cleaning water and the condensing step .

Hereinafter, a ductless dryers according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic plan view of a ductless dryers according to the present invention, FIG. 2 is a plan view schematically illustrating the inside of the ductless dryers of FIG. 1, FIG. 3 is a cross- Fig. FIG. 4 is an enlarged view of the inside of the ductless dryers of FIG. 1. FIG.

1 to 4, a ductless dryer according to the present invention includes a main body 110 forming an outer appearance, a drum 120 accommodating a drying object and rotatably installed in the main body 110, A hot air supply unit 140 for supplying hot air to the inside of the drum 120, a condensing unit for condensing the hot and humid air discharged from the drum using low-temperature drying air using the cooling water, Cleaning units 161 and 161a for removing impurities adhered to the condensing unit 150 and a drain unit 170 for discharging the condensed water and the cleaning water condensed through the condensing unit 150 to the outside . The drain unit 170 discharges the cooling water to the outside according to the structure of the dryer. The apparatus further includes a driving motor 135 for rotating the drum 120.

A door 111 for putting 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 on the bottom side. A belt 131 for rotating the drum 120 and a driving motor 135 for providing driving force to the belt 131 are installed in the main body 110. [ On the shaft of the drive motor 135, a pulley to which the belt 131 is attached is provided.

The drum 120 includes a plurality of lifters 121 capable of lifting clothes, and a drum 120 having an inner space to allow the clothes or the like to be dried to be inserted.

The hot air supply unit 140 includes a gas valve 141 for supplying and blocking a gas and a gas combustor 143 for generating hot air by mixing the gas exhausted from the gas valve 141 with air supplied from the outside, And a hot air supply duct 145 connecting the gas combustor 143 and the drum 120 so that the generated hot air is supplied to the drum 120. Flame rods may be installed in the hot air supply unit 140 to detect the flame current and indirectly determine the amount of carbon monoxide (CO) generated from the flame current by extending the edge of the flame. The gas valve 141 preferably uses a solenoid valve so that the gas injection amount can be sensitively controlled. The gas combustor 143 is connected to the gas valve 141 to mix the gas exhausted from the gas valve 141 and the outside air to burn the mixture, and then heat the air with heat generated at this time. The hot air generated by the heating is supplied to the drum 120 through the hot air supply duct 145.

The condensing unit includes a heat exchange unit (150) for heat-exchanging hot and humid air discharged from the drum using the cooling water. A water supply valve 163 for opening and closing the movement of the cooling water and a water supply pump for supplying the cooling water to the heat exchange unit 150 from outside are further included.

The heat exchanging unit 150 is composed of a fin 151 and a tube 153. The heat exchanging unit 150 condenses the hot and humid air that has passed through the drum 120 by the heat exchange between air and water, . The inlet of the heat exchange unit 150 is connected to the drum 120 by the circulation unit 180, and the outlet of the heat exchange unit 150 is connected to the exhaust duct 181. The fins 151 are laminated so as to allow a plurality of thin plates to vertically contact and pass through hot and humid air at fine intervals with a thin metal sheet having excellent conductivity. The tube 153 circulates water at a low temperature (for example, 22 ° C) inside and passes through the pin 151 in a reciprocating manner. At both ends of the tube 153, a water hose (not shown) is connected to supply and recover low-temperature water. A storage unit 170 is provided at the lower portion of the heat exchange unit 150 to collect the condensed water generated during the condensation process.

The cleaning unit includes a spraying unit 161a for spraying the cleaning water to the condensing unit and a cleaning valve 161 for opening and closing the movement of the cleaning water to be sprayed. In addition, the cleaning unit further includes a cleaning pump for supplying cleaning water from the outside to the injection unit 161a.

The drainage unit includes a drain valve 165 for opening and closing the movement of the condensed water and the cleaning water. Further, the drainage unit further includes a drain pump for discharging the condensed water and the cleaning water to the outside. In addition, the drainage unit further includes a storage unit 170 in which the condensed water and the cleaning water are stored. The drainage unit discharges the cooling water to the outside according to the structure of the dryer.

Hereinafter, the operation of the ductless dryers and the method of controlling the ductless dryers according to the present invention will be described in detail with reference to FIG. 5 to FIG.

5 is a flowchart schematically illustrating a method of controlling a ductless dryers according to an embodiment of the present invention.

Referring to FIG. 5, the step SP10 of drying the object using hot air, the step SP20 of condensing the high temperature and high humidity air generated in the drying step using the cooling water into the low temperature dried air, (SP30) for cleaning the foreign substances contained in the high temperature and high humidity air generated in the drying step using the cleaning water, and a step (SP40) for draining the condensed condensed water through the cleaning water and the condensing step .

In the step SP10 of drying the object to be dried, the gas combustor (heater 143) provided in the hot air supply unit 140 mixes the gas exhausted from the gas valve 141 with the air supplied from outside, And hot air is supplied to the drum 120 through the hot air supply duct 145 to dry the object to be dried contained in the drum 120 by using the hot air.

The condensing step SP20 supplies the cooling water from the outside through the water feed pump and the water feed valve 163 and the hot and humid air discharged from the drum 120 through the heat exchanging unit 150 is cooled Heat exchange occurs. The high temperature and high humidity air exiting the drum 120 is condensed by the low temperature water to be dried by the heat exchanging method of the air to water through the heat exchanging unit 150. The air thus produced is discharged through the exhaust duct 181 do.

The cleaning step SP30 is a step of using the heat exchange unit 150 as a filter to adsorb foreign substances in the air discharged from the drum 120 and then to remove the foreign substances from the heat exchange unit 150 through the spray unit 161a, And the cleaning water supplied through the cleaning valve 161 is sprayed. The foreign matter removed by the cleaning water and the cleaning water falls into the drainage unit. Here, the filter further includes a filter installed in the circulation unit 180 to filter the lint contained in the air discharged from the drum 120, so that the foreign matter can be removed more cleanly. As the filter 200, it is preferable to use a V filter that increases the lint collection rate by reducing the volume of the filter.

The drainage step SP40 discharges the condensed water and the cleaning water collected in the storage unit 170 to the outside through the drain pump and the drain valve 165. [ Here, the draining step SP40 is performed during or after the drying step SP10, or after the cleaning step SP30. Of course, the draining step SP40 can be carried out with other steps according to different control algorithms of the ductless dryers, or independently. In the draining step, the cooling water is discharged to the outside according to the structure of the dryer.

FIG. 6 is a view illustrating the operation of each component according to the passage of time in the method of controlling the ductless dryers according to another embodiment of the present invention, and FIG. 7 is a schematic view illustrating a control method of the ductless dryers of FIG. It is a flow chart.

Referring to FIGS. 6 and 7, first, it is determined whether air is to be dried (SP100). If the air is dried, both the water supply valve, the cleaning valve, and the drain pump are turned off and air drying is performed SP101, SP102).

If it is determined in the air drying determination step (SP100) that the air drying step is not performed, a drying stroke is performed according to the load of the dry laundry. It is first determined whether it is the drying period t1 or the cooling period t2 or the cleaning period t3 and if the drying period t1 or the cooling period t2, the water supply valve is opened to supply the cooling water, Thereby opening the drain pump (SP202, SP203). Here, the driving motor 135 supplies power during the drying period t1 and the cooling period t2 to rotate the drum 120. [ It is possible to perform the step of draining during the drying period t1 and the cooling period t2. The drainage pump is opened (SP203), and it is determined whether the drain pump ON time is longer than a predetermined time t11 (SP204). When the drainage pump is turned off for a predetermined time t11 or more ). In step SP206, it is determined whether the drain pump OFF time is equal to or greater than a predetermined number of times (SP206). If the drain pump OFF time is longer than the predetermined time t12, ). When the drain pump ON time is more than a predetermined number of times, the drain pump is closed (SP208). For example, the predetermined time t11 is 5 seconds, the predetermined time t12 is 255 seconds, and the predetermined number of times is 5 times in advance If set, the drain pump is turned OFF when the drain pump ON time is 5 seconds or more, and the drain pump is turned ON again when the drain pump OFF time is 255 seconds or more, and ON / OFF is repeated 5 times.

The cleaning period t3 is selected in the step SP201 for determining whether the drying period t1 or the cooling period t2 is not the drying period t1 or the cooling period t3. In the cleaning step, the cleaning valve is opened to supply cleaning water to the condensation unit, that is, the heat exchange unit 150 (SP301). Here, it is possible to carry out the step of cleaning, or the step of draining after cleaning. 6 and 7, it is determined whether the drain pump OFF time is equal to or longer than a predetermined time t31 (SP302, SP303). If the drain pump OFF time is longer than the predetermined time t31, ). If the drain pump ON time is longer than a certain time (t32), close the drain pump. Here, the predetermined time t31, the predetermined time t32, and the predetermined time t33 are predetermined values. For example, the predetermined time t31 is 5 seconds, the predetermined time t32 is 40 seconds, If the interval t33 is preset to 45 seconds, the drying section t1 and the cooling section t2 are completed for 45 seconds before the end of the entire stroke, and the cleaning valve is opened for 45 seconds to supply cleaning water to the heat exchange unit for cleaning Step is performed, and after the cleaning valve is opened, the drain pump is opened and drained after 5 seconds for 40 seconds.

According to the present invention, the progress of the drying of the object to be dried is checked using the electrode sensor during the entire drying stroke through the ductless dryers.

1 is a schematic view of a structure of a ductless dryers according to the present invention;

FIG. 2 is a plan view schematically showing the interior of the ductless dryers of FIG. 1; FIG.

FIG. 3 is a side view of the ductless dryers of FIG. 1; FIG.

FIG. 4 is an enlarged view of the inside of the ductless dryers of FIG. 1;

FIG. 5 is a flowchart schematically illustrating a control method of a ductless dryers according to an embodiment of the present invention; FIG.

FIG. 6 is a diagram illustrating the operation of each component according to the passage of time in the control method of the ductless dryers according to another embodiment of the present invention; FIG. And

7 is a flowchart schematically showing a control method of the ductless dryers of FIG.

Claims (15)

A body forming an outer appearance; A drum accommodating the object to be dried and rotatably installed in the body; A driving motor for rotating the drum; A hot air supply unit for supplying hot air into the drum; A condensing unit for condensing the high-temperature and high-humidity air discharged from the drum with low-temperature drying air by using cooling water; A cleaning unit for removing foreign matter adsorbed on the condensing unit by using cleaning water; And And a drain unit for discharging the condensed water condensed through the condensing unit and the cleaning water to the outside, Wherein the operation is performed in the order of the drying operation, the cooling operation, the cleaning operation, and the drain operation according to the passage of time. The method according to claim 1, Each of the drying operation, the cooling operation, the cleaning operation, Wherein the operation time is set so as to operate for a predetermined period of time. The method according to claim 1, The condensing unit includes: A heat exchange unit for heat-exchanging hot and humid air discharged from the drum using the cooling water; And And a water supply valve for opening / closing the movement of the cooling water. The cleaning apparatus according to claim 1, A spraying unit for spraying the cleaning water to the condensing unit; A cleaning valve for opening / closing movement of the cleaning water to be sprayed; And And a cleaning pump for supplying the cleaning water from the outside to the spray unit. delete The method according to claim 1, Wherein the drainage unit comprises: A drain valve for opening / closing the movement of the condensed water and the cleaning water; A drain pump for discharging the condensed water and the cleaning water to the outside; And And a storage unit for storing the condensed water and the cleaning water. delete delete The method according to claim 1, The hot air supply unit, And a gas burner for heating the air supplied to the drum. Drying the object to be dried using hot air; Condensing the high-temperature and high-humidity air generated in the drying step with cooling water into low-temperature dried air; Cleaning the foreign substances contained in the high temperature and high humidity air generated in the drying step using cleaning water; And And discharging the condensed water through the cleaning water and the condensing water. 11. The method of claim 10, The drying may comprise: Rotating the object to be dried using a driving motor; Heating the air introduced from the outside; And And supplying the heated air to the object to be dried. 11. The method of claim 10, Wherein the condensing comprises: Supplying the cooling water; Exchanging heat using the cooling water; And And discharging the condensed condensed water to the outside of the duct. 11. The method of claim 10, Wherein the cleaning step comprises: Wherein the drying step is performed after the drying step is performed. 12. The method of claim 11, Wherein the draining comprises: Wherein the heating step is performed according to a predetermined period of time during which the heating step is performed. 14. The method of claim 13, Wherein the draining comprises: Wherein the cleaning step is performed while the cleaning step is performed.

Images