KR101431436B1 - Dryer - Google Patents

Abstract

An invention for a dryer is disclosed. The disclosed invention relates to: a cabinet; A drum rotatably received in the cabinet; An intake pipe forming a passage through which air is sucked by the drum; A heater installed in the intake pipe; An exhaust pipe forming a passage through which air having passed through the drum is exhausted to the outside; And a heat exchanger for circulating the heat medium to transfer the heat energy of the air passing through the exhaust pipe to the air sucked by the intake tube.

According to the present invention, since the heat energy of the air discharged to the exhaust pipe through the heat exchanging unit is recovered and the air sucked by the intake pipe is heated, the energy efficiency is high and the drying time can be shortened. There is an advantage that the electric power can be reduced or the heater of low calorie can be used compared to the conventional one.

Intake pipe, exhaust pipe, heat exchange

Description

Dryer {DRYER}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dryer, and more particularly, to a dryer that generates hot air to dry laundry.

BACKGROUND ART Generally, a clothes drying apparatus is a device for drying clothes and the like by blowing dry hot air heated by a heater in a housing space containing clothes such as clothes, and is classified into an exhaust type and a condensation type depending on the circulation of the air in which laundry is dried.

1 is a schematic view showing the internal structure of an exhaust type dryer according to the prior art.

1, the conventional exhaust type drier includes a cabinet 2, a drum 4 disposed inside the cabinet 2 to receive a canister, and a drum 4 installed to suck air into the drum 4. [ A heater 8 installed to heat the air sucked into the suction passage 6 and an exhaust passage 10 provided so that air in the drum 4 is exhausted to the outside of the cabinet 2 .

A blowing fan 12 is installed at one side of the suction flow path 6 and the exhaust flow path 10 so that air is supplied into the drum 4 through the suction flow path 6 and then exhausted through the exhaust flow path 10 .

The cabinet 2 is provided with driving means for rotating the drum 4 and rotating the blowing fan 12 together with the rotation of the drum 4.

According to the conventional exhaust type drier constructed as described above, the laundry in the drum 4 flows when the drum 4 rotates.

Then, when the blower fan 12 is rotated with the heater 8 being operated, the air is heated by the heater 8 to become high temperature / low humidity air, and then flows into the drum 4 through the inhalation flow path 6 do.

The high temperature / low-humidity air introduced into the drum 4 is transferred to the laundry 4 through the drum 4 to exchange heat and materials with the laundry. After the high temperature / high humidity air is introduced into the drum 4, 2).

According to the dryer of the prior art, only a part of the thermal energy supplied to the air from the heater is used to dry the cloth, and a considerable amount of heat energy is used not only for reducing the moisture of the laundry but also for raising the temperature of the air, There is a problem that the energy efficiency is low. Therefore, there is a need to improve this.

It is an object of the present invention to provide a dryer that is improved in structure to improve energy efficiency.

The dryer according to the invention comprises: a cabinet; A drum rotatably received in the cabinet; An intake pipe forming a passage through which air is sucked into the drum; A heater installed in the intake pipe; An exhaust pipe forming a passage through which air that has passed through the drum is exhausted to the outside; And a heat exchange unit circulating the heat medium to transfer the heat energy of the air passing through the exhaust pipe to the air sucked by the intake pipe.

Here, the heat exchanger may include: a first heat exchanger for recovering heat energy of air passing through the exhaust pipe and transferring the heat energy to the heat medium; A second heat exchanger for transferring the heat energy transferred through the heat medium to the air sucked by the intake pipe; And a circulation unit for circulating the heating medium.

The first heat exchanger may include a fin coil contacting the exhaust pipe; Preferably, the second heat exchanger includes a fin coil contacting the intake pipe.

In addition, it is preferable that the circulation unit includes a circulation pump.

It is also preferable that a fan connected to the exhaust pipe and a fan motor for driving the fan are further provided.

Preferably, the circulation pump is connected to the fan motor and is driven by the fan motor.

According to the dryer of the present invention, the heat energy of the air discharged to the exhaust pipe through the heat exchanger is recovered and the air taken in by the intake tube is heated, so that the energy efficiency is high, the drying time can be shortened, There is an advantage that the power consumption of the heater can be reduced by the heat energy or the heater of the low heat quantity can be used compared with the conventional one.

In addition, since heat energy is recovered by using the fin coil, heat energy can be recovered without being affected by the moisture contained in the air exhausted to the exhaust pipe, and the circulation pump is driven using the fan motor for driving the fan. There is no need to provide a driving motor for the motor and there is no additional power increase factor.

Hereinafter, an embodiment of a dryer according to the present invention will be described with reference to the accompanying drawings. For convenience of explanation, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 2 is a perspective view showing a dryer according to an embodiment of the present invention, and FIG. 3 is a sectional perspective view showing a part of the dryer shown in FIG.

2 and 3, a dryer 100 according to an embodiment of the present invention includes a cabinet 110, a drum 120, an intake pipe 130, a heater 140, an exhaust pipe 150, a pan portion 160, and a heat exchange portion 170.

The cabinet 110 forms the appearance of the dryer 100 of the present embodiment and accommodates the drum 120 therein. The drum 120 accommodates laundry therein and is rotatably installed in the cabinet 110.

The intake tube 130 forms a passage for allowing air to be sucked into the drum 120. One end of the intake tube 130 communicates with the outside and the other side communicates with the inside of the drum 120. The other side of the intake tube 130 is coupled to the rear supporter 112 that rotatably supports the rear end of the drum 120. An intake hole (not shown) is formed in the rear supporter 112 at a joint portion with the intake tube And the other end of the intake pipe 130 can communicate with the inside of the drum 120. [

The heater 140 is installed inside the intake pipe 130, preferably the intake pipe 130. The heater 140 heats the air sucked into the intake tube 130. The air heated by the heater 140 flows into the drum 120 through the intake pipe 130.

The exhaust pipe 150 forms a passage so that air passing through the drum 120 can be exhausted to the outside. One end of the exhaust pipe 150 is connected to the outside and the other end is connected to the inside of the drum 120. The other side of the exhaust pipe 150 is connected to the fan unit 160 communicated with the inside of the drum 120 so that the other side of the exhaust pipe 150 can communicate with the inside of the drum 120.

Here, the fan unit 160 is provided to induce the suction and discharge of air, and is provided between the drum 120 and the exhaust pipe 150. The fan section 160 includes a fan housing 162, a fan 164, and a fan motor 166.

The fan housing 162 houses the fan 164 therein. One side of the fan housing 162 is connected to the exhaust pipe 150 and the other side thereof is connected to the lint duct 114. The lint duct 114 is installed to communicate with the outlet of the drum 120. The lint duct 114 is equipped with a filter 116 inside the lint duct 114 to allow foreign substances such as seams in the exhausted air to pass therethrough. do.

The fan 164 is housed inside the fan housing 162 and is driven by the fan motor 166 to generate a flow of air.

The fan unit 160 having the fan 164 discharges the air passing through the drum 120 to the outside through the exhaust pipe 150 and the outside air is exhausted to the inside of the drum 120 through the intake pipe 130 And to induce the flow to be introduced.

The heat exchanging unit 170 transfers the heat energy of the air passing through the exhaust pipe to the air sucked into the intake tube 130 and the first heat exchanging unit 172 and the second heat exchanging unit 174 and the circulating unit 176 ).

The first heat exchanging portion 172 is disposed on the exhaust pipe 150. The first heat exchanging part 172 includes a fin coil 171 contacting the exhaust pipe 150. A heating medium such as water or oil is received in the fin coil 171.

The first heat exchanger 172 is connected to the exhaust pipe 150 through the fin coil 171 and the second heat exchanger 172 is connected to the first heat exchanger 172. The first heat exchanger 172 is connected to the exhaust pipe 150 through the drum 120, And recovers the thermal energy of the hot / humid air passing through the exhaust pipe 150, and transfers the heat energy to the heating medium.

The second heat exchanger 174 is disposed on the intake pipe 130. The second heat exchanger 174 is disposed on the intake pipe 130 and is disposed farther from the drum 120 than the heater 140. The second heat exchanger 174 includes a fin coil 171 connected to the first heat exchanger 172.

The heat energy of the hot / humid air of the exhaust pipe 150 recovered by the first heat exchanger 172 is transferred to the second heat exchanger 174 through the heating medium circulating in the fin coil 171, 2 heat exchanger 174 transfers the heat energy to the inside of the intake pipe 130 through the fin coil 171. [ The air introduced into the drum 120 through the intake pipe 130 is heated by the heat energy transferred into the intake pipe 130.

The heat medium inside the fin coil 171 circulates through the first heat exchanging part 172 and the second heat exchanging part 174 by the circulating part 176. The circulation unit 176 includes a circulation pump 177. Circulating pump 177 is connected to fan motor 166 and is driven by fan motor 166. Preferably, the circulation pump 177 can be driven with the fan 164 by its drive shaft being connected in series with the drive shaft of the fan motor 166.

Hereinafter, the operation of the dryer 100 according to the present embodiment will be described.

When the fan unit 160 is operated as the dryer 100 is operated, external air is sucked into the intake tube 130. The air sucked into the intake tube 130 is heated by the heater 140 and flows into the drum 120. The high temperature / low humidity air introduced into the drum 120 is supplied to the drum 120, And is exhausted to the outside through the exhaust pipe 150.

At this time, the heat medium contained in the fin coil 171 of the heat exchanging unit 170 is circulated by the circulation pump 177 of the circulation unit 176 driven together with the fan 164 to the first heat exchanging unit 172 and the second heat exchanging unit 172 The heat exchanger 174 is circulated. The first heat exchanger 172 recovers thermal energy from the hot / humid air passing through the exhaust pipe 150 through the fin coil 171 and transfers the heat energy to the second heat exchanger 174 through the heat medium do. The heat energy transferred to the second heat exchanger 174 heats the air sucked into the intake pipe 130 through the fin coil 171.

The dryer 100 of the present embodiment recovers the thermal energy of the air discharged to the exhaust pipe 150 through the heat exchanger 170 and heats the air sucked into the intake pipe 130 as described above, The drying time can be shortened, the power consumption of the heater can be reduced by the recovered heat energy, or the heater of the low heat quantity can be used compared to the conventional one.

According to the dryer 100 of the present embodiment, thermal energy is recovered using the fin coil 171, so that heat energy can be recovered without being affected by the moisture contained in the air discharged to the exhaust pipe 150, Since the circulation pump 177 is driven by using the fan motor 166 for driving the fan 164, there is no need to provide a separate driving motor and there is no additional power increase factor.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of protection of the present invention should be defined by the following claims.

1 is a schematic view showing the internal structure of an exhaust type dryer according to the prior art.

2 is a perspective view illustrating a dryer according to an embodiment of the present invention.

3 is a cross-sectional perspective view of a portion of the dryer shown in FIG.

Description of the Related Art [0002]

100: dryer 110: cabinet

120: drum 130: intake pipe

140: heater 150: exhaust pipe

160: pan part 170: heat exchange part

172: first heat exchanger 174: second heat exchanger

176:

Claims (6)

cabinet; A drum rotatably received in the cabinet; An intake pipe forming a passage through which air is sucked into the drum; A heater installed in the intake pipe; An exhaust pipe forming a passage through which air that has passed through the drum is exhausted to the outside; And And a heat exchange unit circulating the heat medium to transfer heat energy of air passing through the exhaust pipe to air sucked by the intake pipe, The heat- A first heat exchanger for recovering heat energy of the air passing through the exhaust pipe and transferring the heat energy to the heat medium; A second heat exchanger for transferring the heat energy transferred through the heat medium to the air sucked by the intake pipe; And And a circulation unit for circulating the heat medium, Wherein the circulation unit comprises a circulation pump. delete The method according to claim 1, Wherein the first heat exchanger includes a fin coil contacting the exhaust pipe; Wherein the second heat exchanger includes a fin coil that contacts the intake pipe. delete The method according to claim 1, A fan connected to the exhaust pipe, and a fan motor for driving the fan. 6. The method of claim 5, Wherein the circulation pump is connected to the fan motor and is driven by the fan motor.

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