KR101111511B1 - structure for preventing reverse water pressure drum type washing machine with laundry drying function - Google Patents

Abstract

The present invention provides a dry combined drum washing machine employing a new flow path structure that improves the drying efficiency and drying performance compared to the conventional combined drying drum washing machine of the flow path structure. It is to provide a suitable structure to prevent the structure that flows back through the water supply pipe to the water supply pipe side.

To this end, the present invention is installed in the cabinet, the front of the front (front surface) is formed with a hot air inlet is formed on the bottom of the rear side of the approximately cylindrical tub is formed hot air outlet; A drum rotatably installed in the tub and having a hot air passing hole formed on the front surface thereof so that hot air passing through the hot air inlet of the tub flows into the drum; A drying duct mounted on a heater and a blowing fan on an inner flow path to generate hot air, and fixed to one side of an outer circumferential surface of the tub; A condensation duct for removing moisture contained in the hot air discharged through the hot air discharge port in the lower rear portion of the tub; A condensate supply pipe connected to supply condensate to the condensation duct; A water supply hose connected to the condensate supply pipe; A water supply valve connected to the water supply hose to determine whether to supply condensate; A connector installed in the water supply hose, the back pressure preventing hole being formed to maintain a constant internal pressure and an external pressure of the condensation duct to prevent backflow of the wash water; And, provides a combined drum washing machine characterized in that it comprises a detergent container: installed on the inner upper side of the cabinet.

Drum Washing Machine, Condensation Duct, Connector, Reverse Pressure Prevention Hole

Description

Structure for preventing reverse water pressure drum type washing machine with laundry drying function}

1 is a side cross-sectional view showing an example of a conventional drum washing machine

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

Figure 3 is a perspective view showing the top of the drum washing machine according to the present invention

Figure 4 is an exploded perspective view showing a state in which the connector according to the present invention is installed.

DESCRIPTION OF REFERENCE NUMERALS

10: cabinet 10a: detergent container

20: Tub 20a: Hot air inlet

30: drum 30a: hot air passing

40: drying duct 41: heater

42: blower fan 43: heat sink

50: condensation duct 51: condensate supply pipe

52: water supply hose 61: shaft

62: rotor 63: stator

70: water supply valve 100: connector

110: connector 120: branch pipe

121: back pressure prevention hole 130: connection hose

140: clamp P: drain pump

H: Drain hose

The present invention relates to a drum washing machine, and more particularly, to providing a dry drum washing machine adopting a new flow path structure that can improve drying efficiency and drying performance, when washing water in a tub takes reverse water pressure to condensate water. It is to provide a suitable structure to prevent the phenomenon of backflow into the water supply line supplying the.

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 has the advantage of less damage to the laundry and the laundry is not tangled well, knocking and rubbing the washing effect.

Hereinafter, a structural example of a drum washing machine according to the prior art will be described with reference to FIG. 1.

1 is a side cross-sectional view schematically showing a drum washing machine according to the prior art, the existing drum washing machine is installed to open and close the door (2; door) in the laundry inlet formed in the front of the cabinet (1), the cabinet (1) ) Tub (3; tub) is installed inside to store the wash water.

In the tub 3, a drum 4 having a hole formed on an outer circumferential surface thereof is rotatably installed, and a motor device 5 transmitting a driving force to the drum 4 outside the tub 3. Is installed.

In addition, 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 damper (not shown) 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 mainly applied to an indirect drive system that rotates the drum 4 by transmitting the driving force generated from the motor 5a to the washing shaft 5c by the belt 5b.

On the other hand, the drying duct 7 is installed on the upper inner surface of the cabinet (1). At this time, the drying duct 7 has a heater 7b and a blowing fan 7a are built in so as to generate and forcibly blow hot air.

One end of the drying duct 7 is connected to a gasket 8 connecting the front opening edge of the tub 3 and the door periphery of the front of the cabinet 1.

That is, the gasket 8 is installed along the front inner edge of the tub 3 and has a corrugated shape to accommodate the 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 condensate supply pipe 9a for supplying condensate 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 condensate water supply pipe 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, such a conventional drum washing machine has a drying duct connected to one side of the gasket and is supplied into the drum through this portion, and the supplied drying air is discharged through the front side of the tub again to circulate the drying efficiency. And there was a problem in many ways, such as the limit on the drying performance.

First, the air supplied into the drum is discharged through the tub front side in a state where the air is not penetrated deeply into the drum, and thus, 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.

Next, the conventional drying drum washing machine has a drying duct (7) is connected to the gasket, the drying duct is fixed, the gasket (8) flows during the vibration of the tub due to wear and tear of the gasket occurs There was a disadvantage.

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

In addition, 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, thereby causing resistance.

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

In addition, 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 as described above, the door 2 Has the disadvantage that it is unnecessarily heated.

On the other hand, as the drying duct 7 is connected to the outer circumferential surface of the upper side of the gasket 8, the upper side and the lower side of the gasket 8 form an asymmetrical structure, so that the gasket 8 of the tub 3 There is a problem that can not balance the front.

In addition, when the reverse water pressure is applied to the condensate supply pipe 9a through the condensation duct 9, the washing water in the tub 3 flows back through the water supply line for supplying condensed water and drains to the water supply pipe side. .

The present invention has been made to solve the above-mentioned problems, the present invention provides 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, the purpose of the present invention is to provide a suitable structure for preventing the phenomenon that the wash water in the tub backflow through the water supply pipe for supplying condensate when the water supply pipe is subjected to reverse water pressure.

In order to achieve the above object, the present invention is installed in the cabinet, the front of the front (front side) is formed with a hot air inlet is formed in a substantially cylindrical tub with a hot air outlet on the lower rear side; A drum rotatably installed in the tub and having a hot air passing hole formed on the front surface thereof so that hot air passing through the hot air inlet of the tub flows into the drum; A drying duct mounted on a heater and a blowing fan on an inner flow path to generate hot air, and fixed to one side of an outer circumferential surface of the tub; A condensation duct for removing moisture contained in the hot air discharged through the hot air discharge port in the lower rear portion of the tub; A condensate supply pipe connected to supply condensate to the condensation duct; A water supply hose connected to the condensate supply pipe; A water supply valve connected to the water supply hose to determine whether to supply condensate; A connector installed in the water supply hose, the back pressure preventing hole being formed to maintain a constant internal pressure and an external pressure of the condensation duct to prevent backflow of the wash water; And, provides a combined drum washing machine characterized in that it comprises a detergent container: installed on the inner upper side of the cabinet.

Hereinafter, with reference to the accompanying drawings for a dry-use drum washing machine according to an embodiment of the present invention will be described in detail as follows.

First, Figure 2 is a side cross-sectional view showing the overall configuration of a dry-use drum washing machine according to the invention, Figure 3 is a schematic view showing an upper portion of the dry-use drum washing machine according to the invention, Figure 4 is a connector according to the present invention is installed An exploded perspective view showing a state.

2 and 3, the combined drum washing machine according to the present invention is installed in the cabinet 10 to store the washing water, and a hot air inlet 20a is formed on the front side and the bottom of the rear side. Tub 20 having a hot air discharge hole (20b) is formed on the side, and the drum 30 is rotatably installed in the tub 20 and formed with a plurality of hot air passing holes (30a) having a predetermined arrangement on the front surface And a heater 41 and a blower fan 42 are installed inside the tub 20 so as to be fixed on the upper outer peripheral surface of the tub 20 and generate hot air therein, and one end of the tub 20 has a hot air inlet ( One end is connected to a drying duct 40 connected to 20a to supply the hot air generated therein to the drum 30, and a hot air discharge hole 20b at a lower rear side of the tub 20. The tub 20 is installed at the rear side of the tub 20 so that the other end is connected to the duct 40. From to remove the moisture contained in the discharged air it can be configured to include a condensing duct 50 is sent to the drying duct (40).

In addition, the condensate water supply pipe 51 connected to supply the condensate water to the condensation duct 50, the water supply hose 52 connected to the condensate water supply pipe 51, and the condensate water supply 52 are connected to each other. It is installed in the water supply valve 70 and the water supply hose 52 to determine the back pressure prevention hole for preventing the back flow of the wash water by maintaining a constant pressure of the inside and outside pressure of the condensation duct 50 It is configured to include a connector (100) formed with a 121, and a detergent container (10a) installed on the upper inside of the cabinet.

As shown in FIG. 4, the connector 100 according to the present invention connects a water supply hose 52a on the condensate supply pipe 51 side and a water supply hose 52b on the water supply valve 70 side. 110 and branched to one side of the connecting pipe 110 to maintain a constant pressure of the internal pressure and the external pressure of the above-mentioned condensation duct 50 to the washing water flows back through the condensation duct 50 In order to prevent the back flow prevention hole 121 is formed with a branch pipe 120 is formed.

At this time, the connection hose 130 for connecting with the side of the branch pipe 120 and the detergent container (10a) formed with the back pressure preventing hole 121 is further configured.

At this time, one end of the connection hose 130 is connected to the branch pipe 120, the other end is connected to one side of the detergent container (10a) so that the internal pressure of the condensation duct 50 is constant with the external pressure. do.

More specifically, since the detergent container 10a is normally installed to be opened and closed from the outside, the inside of the detergent container 10a has the same pressure as the external atmospheric pressure. Therefore, when the connection hose 130 connected to the branch pipe 120 is connected to the detergent container 10a, the internal pressure of the condensation duct 50 communicated with the branch pipe 120 is equal to the external pressure. This prevents the wash water from flowing back due to back water pressure.

And, the installation height of the connector 100 is preferably installed lower than the installation height of the detergent container (10a). When the water supply valve 70 is turned off in the drying operation, the condensed water flows to the condensation duct 50 and then flows back to the water supply valve 70, to the branch pipe 120. This is to prevent the flow into the detergent container 10a side.

In addition, the connector 100 is installed in the water supply hose 52 connecting the condensate water supply pipe 51 and the water supply valve 70, but is installed closer to the water supply valve 70 side than the condensate supply pipe 51 side. It is more preferable.

For example, it is preferable to be installed in the water supply hose 52 that is approximately 55mm away from the water supply valve 70 side, and when installed closer to the water supply valve 70 can obtain a better effect, but due to the surrounding components Because of the difficulty, the position presented above is an appropriate position.

In addition, the water supply hose 52 and the connection hose 130 connected to the connector 100 are preferably provided with a clamp 140 to prevent leakage of condensed water to the interconnected portions.

On the other hand, the tub 20 is connected to the drain hose (H), the drain hose (H) on the drain pump (P) is installed.

In addition, between the tub 20 and the drying duct 40 is provided with a heat sink 43 (passivation) for blocking the heat transfer of the drying duct 40 directly to the tub 20.

At this time, the heat sink 43 is preferably made of a metal material such as an iron plate, but may be a plastic material without heat deformation, the heat sink 43 is covered to the extent to which radiant heat is transmitted from the heater of the drying duct 40 It is formed to have an area capable of.

On the other hand, it is preferable that the hot air passing through hole 30a formed in the drum 30 is radially formed as a whole.

The drum 30 penetrates the tub 20 and is axially connected to the drum 30, a rotor 62 coupled to a rear end of the shaft 61, and the rotor 62. Preferably rotated in a direct drive method by the outer rotor type motor consisting of a stator 63 located inside, but is not necessarily limited thereto.

In addition, the upper surface of the drying duct 40 may be provided with a heat dissipation means such as a heat radiation fin 44 to increase the heat dissipation area to prevent overheating of the upper surface of the drying duct.

The action of the dry-use drum washing machine of the present invention configured as described above is as follows.

First, the hot air inlet 20a is formed at the upper front side of the tub 20, and the hot air outlet 20b is formed at the lower rear side of the tub 20.

The reason for this is that the hot air flowing into the drum 30 and the hot air discharged to the condensation duct 50 are in a diagonal direction, so that the hot air is entirely deep inside the drum 30. This is to discharge the laundry evenly after drying evenly.

Next, the hot air inlet 20a of the tub 20 is formed in the upper portion of the front of the tub 20, the hot air passing through hole 30a of the front of the drum 30 to form a concentric circle on the front of the drum (30) It is arranged, but is formed to be arranged in a radial form in the form of a straight letter, or is formed to be arranged in a zigzag form in the radial direction.

That is, the hot air passing through the front of the drum 30 is formed in such a way that the strength of the front part of the drum 30 is not reduced but the flow passage cross section is maximized.

Thus, the hot air inlet hole 20a and the hot air inlet hole 20a communicate with each other even though the drum 30 is rotated by forming the hot air passage hole 30a in an effective arrangement form over the entire front surface of the drum 30. The hot air introduced into the tub 20 through the inlet 20a may be smoothly supplied into the drum 30 through the hot air passing hole 30a provided in the front of the drum 30.

On the other hand, the heat dissipation plate 43 installed in the lower portion of the drying duct 40 to prevent the heat generated from the drying duct 40 is transmitted to the tub 20.

That is, when the drying duct 40 having a heater that generates heat is directly fixed to the tub 20, the tub 20 made of plastic receives heat, which may cause deformation. It is to block directly through the heat sink 43, which is a separate member to be delivered to the tub 20.

In addition, the drying combined drum washing machine of the present invention vibrates at a portion where the drying duct 40 and the tub 20 are connected as the drying duct 40 is fixed on the outer circumferential surface of the tub 20 via the heat sink 43. There is no need to install a gasket to absorb the water. This is because the drying duct 40 is fixed to the tub 20, so that when the tub 20 flows or vibrates, the drying duct 40 also flows or vibrates with the tub.

Of course, it is easily understood by those skilled in the art 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.

In addition, since the condensation duct 50 is directly fixed to the rear surface of the tub 20, the condensation duct 50 and the tub 20 do not need to separately install a gasket for absorbing vibration.

On the other hand, when a water supply pipe (not shown) is jointly managed by a public apartment, there may be a case where water is drained in the reverse direction by applying a reverse water pressure to the pipe for cleaning the water supply pipe, etc. When the negative pressure is applied through the water supply hose 52 connected to the water supply pipe while the washing water is full in the tub 20, the water inside the drum washing machine is discharged through the water supply path.

That is, when the reverse water pressure is not released and is delivered to the tub 20 as it is, the wash water filled in the tub is transferred through the condensation duct 50, the condensate water supply pipe 51, the water supply hose 52, and the water supply valve 70. Backflow is discharged to the water supply pipe (not shown).

Then, when the wash water contaminated by the washing, etc. flows back into the water supply pipe, a problem occurs that the clean water on the water supply pipe is contaminated by the backwashed water.

However, according to the present invention, the back pressure preventing hole 121 communicating with the detergent container 10a is formed in the water supply hose 52 connecting the condensed water supply pipe 51 and the water supply valve 70. Even if reverse water pressure is applied, the washing water inside the tub 20 is not affected.

That is, pressure equalization is achieved by being connected to the air in the atmosphere by the back pressure preventing hole 121 formed in the branch pipe 120 of the connector 100 is connected to the detergent container (10a) through the connection hose 130. The backflow of the wash water due to the back water pressure is prevented.

On the other hand, the connector 100 is installed at a lower point than the detergent container (10a), it is installed closer to the water supply valve 70 side than the condensate water supply pipe side, which is the condensate flowing into the condensation duct 50, the flow back, This is to prevent the flow into the detergent container (10a) is introduced into the branch pipe 120 side of the connector 100.

Particularly, in order to satisfy the requirements of developed countries, in order to satisfy the regulations of developed countries, the export drying drum washing machine does not take reverse water pressure even if the water in the tub 20 is full. Drum washing machines have the advantage of being able to meet these specifications even under new drying systems.

Hereinafter, referring to the drying process of the combined drying drum washing machine of the present invention for reference.

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 power is supplied to the blower fan 42. Accordingly, the heater and the blower fan operate to generate hot air. Generate.

The hot air generated in the drying duct 40 sequentially passes through the hot air inlet 20a of the front surface of the tub 20 and the hot air passing hole 30a of the front surface of the drum 30. Inflow.

At this time, the hot air passing through hole 30a is formed on the front surface of the drum 30 in such a way that the strength of the flow passage area can be maximized, but the drum 30 is formed entirely over the front of the drum 30. ) Is rotated, the hot air through hole 30a is always located at a position corresponding to the hot air inlet 20a.

For this reason, the hot air introduced into the tub 20 through the hot air inlet 20a immediately flows into the drum 30 directly without being bypassed to another path.

Subsequently, the hot air introduced into the drum 30 proceeds toward the hot air outlet 20b of the tub 20 formed in a diagonal direction, thereby absorbing moisture contained in the laundry and 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.

In addition, the drum 30 is rotated at a low speed and the laundry is mixed with the zoom, and in the mixed state, the laundry flows up to a speed such that the laundry does not fall off the inner surface of the drum 30, and You may be able to increase your contact time with laundry.

On the other hand, the dried hot air is discharged to the condensation duct 50 in the state containing the moisture instead of lowering the temperature, the condensation duct 50 is a tub forming a diagonal with the upper side of the hot air inflow direction of the drum ( Since it is connected to the lower rear side of the 20) to allow the air discharged from the drum 30 to be more smoothly discharged to the condensation duct (50).

That is, since the air at the hot air inlet 20a side of the tub 20 is light and warm, the air at the hot air outlet 20b side of the tub 20 is relatively heavy and cold, so that the tub 20 of the tub 20 is circulated in the air. The flow path structure of the present invention in which the hot air inlet 20a is formed at the top of the front surface and the hot air outlet 20b is formed at the bottom of the rear of the tub 20 conforms to the principle of air circulation by natural convection.

In addition, the drum washing machine of the present invention is discharged in a state where the hot air penetrates completely through the drum 30, and thus, the drying effect is improved because hot air reaches evenly even to laundrys located deep in the drum.

In addition, the wet air flowing out of the hot air outlet 20b and introduced into the condensation duct 50 flows cold condensate into the condensation duct 50 through the condensation water supply pipe 51, thereby condensing duct ( 50) can remove the moisture contained in the humid air discharged.

In addition, the dry air from which moisture is removed from the condensation duct 50 is introduced into the drying duct 40 by the blowing fan 42 embedded 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.

As the above cycle is repeatedly performed, the laundry is dried.

So far, the present invention has been described with reference to the embodiments, and those skilled in the art to which the present invention pertains may implement the modified forms of embodiments within the essential technical scope of the present invention. Here, the essential technical scope of the present invention is shown in the claims, and the modified forms within the equivalent range will be construed as being included in the present invention.

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

First, according to the present invention, when the new drying system is applied, the air supplied into the drum penetrates deeply into the drum, so that drying is uniformly performed on all the laundry, thereby improving drying efficiency and drying performance.

In other words, the hot air generated in the drying duct flows into the upper portion of the front of the drum flows in a diagonal direction and is discharged through the lower rear of the drum. Thus, the supply of hot air evenly deep inside the drum improves drying efficiency and drying performance.

Second, according to the present invention, as the drying duct is coupled to the turbo form of the upper side and the lower side of the gasket forms an accurate symmetrical structure, it is possible to evenly absorb the vibration of the tub.

Third, according to the present invention, since hot air flows into the drum through the tub without passing through the gasket, the phenomenon in which the door is unnecessarily heated is eliminated unlike the conventional art.

Fourth, according to the present invention, it is possible to prevent the backflow of the washing water in the tub through the water supply line for supplying condensed water when the water supply pipe is subjected to reverse water pressure.

Claims (5)

A cylindrical tub installed inside the cabinet and having a hot air inlet formed at a front upper side thereof and a hot air outlet formed at a lower rear side thereof; A drum rotatably installed in the tub and having a hot air passing hole formed on the front surface thereof so that hot air passing through the hot air inlet of the tub flows into the drum; A drying duct mounted on a heater and a blowing fan on an inner flow path to generate hot air, and fixed to one side of an outer circumferential surface of the tub; A condensation duct for removing moisture contained in the hot air discharged through the hot air discharge port in the lower rear portion of the tub; A condensate supply pipe connected to supply condensate to the condensation duct; A water supply hose connected to the condensate supply pipe; A water supply valve connected to the water supply hose to determine whether to supply condensate; A connector interposed in the water supply hose, the back pressure preventing hole being formed to maintain a pressure inside the condensation duct equal to an external atmospheric pressure to prevent backflow of the wash water; And, Drying drum washing machine characterized in that it comprises a detergent container: installed on the inner upper side of the cabinet. The method of claim 1, The connector A connection pipe connecting the water supply hose on the condensate supply pipe side to the water supply hose on the water supply valve side; Drying drum washing machine, characterized in that consisting of a branching pipe: branched to one side of the connecting pipe formed with a backflow prevention hole. The method of claim 2, Drying drum washing machine, characterized in that further comprises a connection hose connecting the branch pipe and the one side of the detergent container formed with the back pressure preventing hole. The method of claim 2, Drying drum washing machine, characterized in that the installation height of the connector is installed lower than the installation height of the detergent container. The method of claim 3, wherein Drying drum washing machine, characterized in that the clamp is installed on the water supply hose connected to the connector and the connection hose side to prevent leakage of condensed water to the interconnected portion.

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