KR101053584B1 - Drum washing machine - Google Patents

Abstract

The present invention relates to a dry drum washing machine employing a new flow path structure that improves the drying efficiency and drying performance compared to a conventional drum washing machine, in particular, when a new drying system is applied. The purpose of the present invention is to improve the strength of the tub so as to prevent deformation of the tub, which may be generated due to the heat supplied from the drying duct.

To this end, the present invention is installed in the cabinet to store the wash water, the tub made of plastic material hot air inlet formed in the upper front; A drum rotatably installed in the tub; It is fixedly installed to be in close contact with the outer peripheral surface of the upper side of the tub, and a heater and a blowing fan are built therein to generate hot air, one end of which is connected to the hot air inlet of the tub to the hot air generated therein into the drum. A drying duct supplied; A condensation duct installed at the rear side of the tub such that one end is connected to the rear surface of the tub and the other end is connected to the drying duct, and removes moisture contained in air discharged from the tub to guide the drying duct to the drying duct: It is configured to include; It provides a drum washing machine characterized in that the rib for strength reinforcement is provided around the hot air inlet of the tub.

Drum Washing Machine, Tub, Drum, Drying Duct, Condensation Duct

Description

Drum type washing machine

Figure 1 is a side cross-sectional view schematically showing a drum washing machine according to the prior art

Figure 2 is a side cross-sectional view showing the configuration of a drum washing machine according to the present invention.

3 is an exploded perspective view showing the main parts of FIG.

4 is a front view showing a form in which the tub front part of FIG. 2 is viewed from the inside;

Explanation of symbols on the main parts of the drawings

10: cabinet 20: tub

20a: Hot air inlet 30, 130: Drum

30a, 130a: Hot air suction hole 40: Drying duct

41: heater 42: blowing fan

43: Heat shield bracket 50: Condensation duct

51: water supply 61: shaft

62: rotor 63: stator

The present invention relates to a drum washing machine, and more particularly, to a drum washing machine to improve the drying efficiency and drying performance by improving the drying system of the combined drying drum washing machine.

In general, the drum washing machine is a device for washing laundry by rotating the drum by the driving force of the motor in a state in which detergent, washing water and laundry are put into the drum. The drum washing machine is less damage to the laundry and the laundry is not tangled well, knocking and rubbing has the advantage of producing a laundry effect.

Hereinafter, with reference to the accompanying Figure 1 with respect to the drum washing machine according to the prior art as follows.

1 is a side cross-sectional view schematically showing a drum washing machine according to the prior art.

As shown in FIG. 1, the drum washing machine according to the related art includes a cabinet 1 having a laundry inlet formed on a front surface thereof, a door 2 installed to be opened and closed at a laundry inlet of the cabinet 1, and the cabinet ( 1) a metal tub 3 installed to store wash water therein, a drum 4 rotatably installed in the tub 3, and a drum 3 installed in the tub 3. It comprises a motor device (5) for transmitting a driving force to.

Here, the door 2 is provided with a door glass 2a to protrude toward the opening side of the tub 3.

In addition, a hanging spring 6 supporting the tub 2 is installed between the inside of the upper surface of the cabinet 1 and the upper side of the outer peripheral surface of the tub 2, and although not shown, a lower surface of the cabinet 1. A friction damper is provided between the inner side and the lower side of the outer circumferential surface of the tub 2 to damp the vibration of the tub 2 generated when the drum washing machine is operated.

In addition, the motor device 5 is an indirect driving method for transmitting the driving force generated from the motor 5a to the washing shaft 5c by the belt 5b to rotate the drum 4.

On the other hand, the drying duct 7 is installed on the upper inner surface of the cabinet (1). In this case, a blowing fan 7a and a heater 7b are built in the drying duct 7 so as to discharge hot air. One end of the drying duct 7 is installed in communication with the opening of the door 2 side of the tub 3.

Here, one end of the drying duct 7 and the opening of the tub 3 are connected by a gasket 8. The gasket 8 is installed along the front inner edge of the tub 3 and has a corrugated shape to accommodate vibration of the tub 3. Accordingly, the hot air is prevented from leaking through the connection portion between the drying duct 7 and the tub 3.

In addition, the tub 3 is provided with a condensation duct 9 to communicate with the drying duct (7). At this time, one end of the condensation duct 9 is connected to the outer surface of the tub 3, the other end of the condensation duct 9 is connected to the drying duct (7). The condensation duct 9 is provided with a water supply 9a for supplying cooling water to condense moisture in the air to remove moisture.

The drum washing machine configured as described above performs washing, rinsing, dehydrating and drying operations. Hereinafter, the drying operation of the drum washing machine will be described.

When the drying operation of the drum washing machine starts, power is applied to the heater 7b of the drying duct 7. At this time, as the blowing fan 7a and the heater 7b are operated, the blowing fan 7a blows hot air.                         

The hot air hits the inclined portion of the door glass 2a by the guide of the drying duct 7 and flows into the drum 4.

The hot air introduced into the drum 4 heats the laundry to evaporate moisture contained in the laundry. At this time, by stirring the laundry while the drum 4 is rotated at a low speed, the laundry is evenly exposed to hot air to help evaporation of moisture.

The evaporated water is discharged through the condensation duct 9 while being contained in the air. At this time, water is sprayed from the water supply 9a of the condensation duct 9 to remove moisture in the air. Air dehumidified in this way is introduced into the drying duct (7) and the air introduced into the drying duct (7) is converted into hot air by the heater (7b) and the blowing fan (7a) is reflowed into the drum (4) Drying is performed on the laundry.

The laundry is dried while repeatedly performing this series of procedures.

However, in the conventional drum washing machine, a drying duct is connected to one side of the gasket and supplied to the drum through this portion, and the supplied drying air is discharged through the front side of the tub and circulated so that drying efficiency is improved. There were problems in many ways.

First, since air supplied into the drum is discharged through the tub front side in a state where the drum does not penetrate deeply inside the drum, drying is not performed properly in the drum.

Therefore, the existing flow path structure has a disadvantage in reducing the drying efficiency and drying performance.

Second, the conventional drying drum washing machine has a drying duct is connected to the gasket, the drying duct is fixed, the gasket has a disadvantage that the gasket wear and tear due to the flow of the vibration of the tub.

Therefore, since an expensive gasket 8 having a relatively small thermal deformation must be installed, there is a problem in that the manufacturing cost increases.

Third, the drying duct 7 is discharged vertically downward through the gasket, which is displaced from the axial direction of the drum, and the hot air is discharged by hitting the door glass so that the hot air cannot be introduced deep into the drum. There is this.

Therefore, to overcome this, a blower having a larger capacity must be installed.

Fourth, since the hot air of the drying duct 7 is switched from the inclined portion of the door glass 2a via the gasket 8 to flow into the drum 4, the door 2 and the tub ( There is a disadvantage that 3) is unnecessarily heated.

The present invention has been made in order to solve the above problems, the present invention relates to a dry double drum washing machine employing a new flow path structure that improves the drying efficiency and drying performance compared to the conventional dry double drum washing machine, In particular, it is an object of the present invention to provide a tub structure that is suitable for preventing the thermal deformation of the tub, which may be generated due to the heat supplied from the drying duct when the modified system is applied.

In order to achieve the above object, the present invention is a tub with a hot air inlet formed on the front upper portion; A drum rotatably installed in the tub; It is fixedly installed to be in close contact with the outer peripheral surface of the upper side of the tub, and a heater and a blowing fan are built therein to generate hot air, one end of which is connected to the hot air inlet of the tub to the hot air generated therein into the drum. A drying duct supplied; One end is connected to the lower rear of the tub and the other end is connected to the drying duct is installed on the rear side of the tub to remove the moisture contained in the air discharged from the tub to guide the drying duct It is made, including: a drum washing machine characterized in that the rib for strength reinforcement is provided around the hot air inlet of the tub.

Hereinafter, a drum washing machine according to the present invention will be described with reference to the accompanying drawings.

Figure 2 is a side cross-sectional view showing the configuration of a drum washing machine according to the present invention, Figure 3 is an exploded perspective view showing the main portion of Figure 2, Figure 4 is a front view showing the front of the tub of Figure 2 from the inside.

As shown in Figure 2 to 4, the drum washing machine according to the present invention is installed in the cabinet 10 to store the wash water and injection-molded tub 20 made of a plastic material formed with a hot air inlet (20a) formed in the upper portion of the front And a drum 30 rotatably installed inside the tub 20 and having a hot air suction hole 30a formed on the front surface thereof, and fixed to be in close contact with the outer peripheral surface of the upper side of the tub 20 to generate hot air. The heater 41 and the blower fan 42 are embedded in the inside thereof, and one end thereof is connected to the hot air inlet 20a of the tub 20 to supply hot air generated therein to the drum 30. Air is discharged from the tub 20 is installed at the rear side of the tub 20 so that one end is connected to the duct 40, the rear end of the tub 20 and the other end is connected to the drying duct 40 The moisture contained in the guide to the drying duct 40 It is configured to include a condensing duct (50).

Here, the tub 20 around the hot air inlet 20a of the tub 20 to prevent the deformation of the hot air inlet of the tub 20 due to the influence of hot air discharged from the drying duct 40. The strength reinforcing rib 21 which improves the strength of () is formed.

At this time, the hot air inlet 20a of the tub 20 is formed in a substantially rectangular shape, and the strength reinforcing rib 21 has a tub so as to have a length in a direction orthogonal to each side of the rectangular hot air inlet 20a. Protruding on the inner side of the (20).

On the other hand, the hot air suction hole (30a) formed in the drum 30 is formed in a predetermined arrangement over the entire surface of the drum (30).

Therefore, even when the drum 30 rotates, the hot air intake hole 30a is positioned at a position corresponding to the hot air inlet 20a formed at the tub 20 at all times, and thus, through the hot air inlet 20a of the tub 20. Hot air flowing from the drying duct 40 is smoothly supplied into the drum 30.

In addition, the drying duct 40 is fastened and fastened by a fastening member such as a screw to the upper side outer surface of the tub 20, and the drying duct 40 between the tub 20 and the drying duct 40. Heat blocking bracket 43 for preventing the heat generated in the heat transfer to the tub 20 is installed.

On the other hand, the drum 30 penetrates the tub 20 and is axially connected to the drum 30, a rotor 62 coupled to the rear end of the shaft 61, and the rotor 62. Is shown to be rotated in a direct drive by an outer rotor type motor consisting of a stator (63) located inside, but is not necessarily limited thereto.

Referring to the structure of the drum washing machine according to the present invention configured as described above in more detail.

The hot air inlet 20a of the tub 20 is formed on the front of the tub 20, the hot air suction hole 30a of the drum 30 is spaced apart a predetermined interval along the front of the drum 30 The hot air suction hole 30a is formed at a position corresponding to the hot air inlet 20a formed in the tub 20 in the circumferential direction with respect to the central axis of the drum 30.

Therefore, even if the drum 30 rotates, the hot air inlet 20a formed at the fixed position of the tub 20 and the hot air intake hole 30a of the drum 30 can be positioned to correspond to the hot air inlet 20a. Hot air flowing through is continuously supplied into the drum 30.

Here, since the rib 21 for strength reinforcement is formed around the hot air inlet 20a of the tub 20, the hot air inlet of the tub 20 is generated by the hot air being supplied from the drying duct 40. 20a) Even if the site is heated, it is not easily deformed.                     

On the other hand, the lower portion of the drying duct 40 is provided with a heat shielding bracket 43, the heat shielding bracket 43 is to prevent the heat generated in the drying duct 40 is transmitted to the tub 20 and In addition, to support the drying duct 40.

At this time, the heat shield bracket 43 is fixed to the outer surface of the tub 20, the drying duct 40 is fixed to the tub 20 by a fastening member such as a screw.

Of course, it is also understood that a sealing member may be installed at the connection portion of the drying duct 40 and the tub 20 to prevent leakage of heat generated from the drying duct 40.

On the other hand, it is preferable that one end of the condensation duct 50 is connected to the rear surface of the tub 20. This is to face the inflow direction of the hot air flowing into the drum 30 and the discharge direction of the hot air discharged to the condensation duct 50 diagonally, so that the hot air can dry the laundry evenly without leakage of heat.

The condensation duct 50 is fixedly installed at the rear of the tub 20, and there is no need to separately install a gasket for absorbing vibration in a portion where the condensation duct 50 and the tub 20 are connected.

Hereinafter, the drying process of the drum washing machine configured as described above is as follows.

When the drying operation of the drum washing machine is started, power is applied to the heater 41 embedded in the drying duct 40 and hot air is generated as the blower fan 42 is operated.

As such, the hot air generated through the drying duct 40 sequentially passes through the hot air inlet 20a of the tub 20 and the hot air suction hole 30a of the drum 30 to be introduced into the drum 30. do.

At this time, since the hot air suction hole 30a is formed in the entire front surface of the drum 30, even if the diarrhea drum 30 is rotated, the hot air inlet 20a and the hot air suction hole 30a communicate with each other. Hot air introduced into the tub 20 through the 20a is easily supplied into the drum 30.

The hot air introduced into the drum 30 absorbs the moisture contained in the laundry while heating the laundry, thereby drying the laundry.

At this time, by stirring the laundry while the drum 30 rotates at a low speed, the laundry is evenly exposed to hot air, thereby improving the drying efficiency of the laundry.

And, the air after the drying process is discharged to the condensation duct 50, the condensation duct 50 is connected to the lower rear side of the tub 20 in a diagonal line with the upper side of the hot air inflow direction of the drum (30). Since the air discharged from the drum 30 is smoothly discharged to the condensation duct (50).

Subsequently, the condensed water is injected into the condensation duct 50 from the water supply 51 to remove moisture contained in the wet air discharged from the drum 30 to the condensation duct 50.

In addition, the air from which moisture is removed from the condensation duct 50 is introduced into the drying duct 40 by the blowing fan 42 built in the drying duct 40, and the heater (built in the drying duct 40) After being heated by 41, it is re-introduced into the drum 30 by the blowing force of the blowing fan 42.                     

Therefore, the laundry is dried while repeatedly performing the above-described circulation process.

As described above, the drum washing machine according to the present invention has the following effects.

First, air supplied into the drum penetrates deep into the drum, and drying is uniformly performed on all the laundry, thereby improving drying efficiency and drying performance.

That is, hot air generated in the drying duct flows into the upper part of the front side of the drum and is discharged into the lower part of the rear side of the drum which is diagonal to the inflow direction. Therefore, deep inside the drum Since hot air is supplied, drying efficiency and drying performance are improved.

Second, unlike the conventional dry-use drum washing machine, the drying duct is connected to the tub to eliminate wear and tear of the gasket.

Third, the hot air is discharged into the drum without being resisted by hitting the door glass, the hot air can be introduced deep into the drum, it is also possible to improve the drying efficiency.

Fourth, due to the strength reinforcing rib around the hot air inlet of the tub it is possible to prevent deformation around the inlet of the tub.

Fifth, since the drying duct and the condensation duct are fixed to the tub, there is no need to install a separate gasket in the connection portion as in the prior art, and the air flow path of each duct can be shortened.

Claims (3)

A tub formed of a plastic material installed in the cabinet to store the wash water and having a hot air inlet formed at an upper portion of the front surface thereof; A drum rotatably installed in the tub; It is fixedly installed to be in close contact with the outer peripheral surface of the upper side of the tub, and a heater and a blowing fan are built therein to generate hot air, one end of which is connected to the hot air inlet of the tub to the hot air generated therein into the drum. A drying duct supplied; A condensation duct installed at the rear side of the tub such that one end is connected to the rear surface of the tub and the other end is connected to the drying duct, and removes moisture contained in air discharged from the tub to guide the drying duct to the drying duct: Including; And a strength reinforcing rib provided around the hot air inlet so as to prevent the surrounding of the hot air inlet from being deformed by the hot air supplied from the drying duct. The method of claim 1, The strength reinforcing rib, Drum washing machine characterized in that it has a length in the direction orthogonal to each side forming the hot air inlet of the tub. The method according to claim 1 or 2, The strength reinforcing rib is a drum washing machine, characterized in that formed on the inner surface of the tub.

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