KR20000002187A - Electric heater of drum washing machine - Google Patents

Abstract

PURPOSE: An electric heater of a drum washing machine is provided to reduce the power consumption by using the minimum washing water, prevent the overheating of an electric heater. CONSTITUTION: An electric heater of a drum washing machine comprises: a cylinder-shaped fixing container(20) for carrying washing water, horizontally suspended inside of a housing(10); a rotation container(30) where many dehydrating holes(31) are drilled, established to be separated at a certain interval in a concentric circle inside of the fixing container(20); a rotation pivot(33) having one end part connected with the center of the rear end part of the rotation container(30), and also having the other end part equipped in a pulley(36); a driving motor(38) for rotating the rotation container(30) through the rotation pivot(33), connected with the pulley(36) mediating a belt(37), fixed through a bracket(39) at the rear of the lowest part of the fixing container(20).

Description

Electric heater of drum washing machine

The present invention relates to a drum washing machine, and more particularly, to an electric heater installation structure of the drum washing machine is installed between the rotating tank and the fixing tank heating the washing water.

In general, the washing machine is a washing machine is performed by the drop caused by the rotation of the rotating tub having a drum shape, washing, rinsing, dehydration drying is automatically performed according to a pre-programmed. In addition, depending on the laundry to be washed can be divided into washing, standard washing, wool washing. 1 is a schematic view showing the overall structure of such a conventional drum washing machine.

As shown in the related art, the drum washing machine is provided with a fixing tank (2) for fresh water in a rectangular cylindrical housing (1) forming an exterior by hanging with a buffer spring (4). The drum-like rotary tub 3 is built in 2). And the shock absorbing member (4a) for buffering the lower portion of the fixing tank (2) is provided.

The rotating tub 3 is driven by a driving motor 5 mounted on the lowermost end of the fixed tub 2, and for this purpose, the rotating shaft 6 coupled with the center of the rotating tub 3 at the side end of the fixed tub 2 is provided. The pulley 6a is configured, and the pulley 6a is connected to the driving motor 5 and the belt 6b to receive the rotational force of the driving motor 5. The rotating tank 3 is formed with a plurality of dehydration holes (3a) over the entire surface, the lifter (not shown) made to project inward is configured at intervals of 120 degrees. The dewatering hole 3a guides the water to flow between the fixing tank 2 and the rotating tank 3 during washing, and the water centrifuged from the fines in the rotating tank 3 to the fixing tank 2 during dewatering. Guide them out. The lifter (not shown) serves to lift and drop the laundry.

On the other hand, the lower portion of the rotary tub (3) the electric heater (7) is installed can function to boil off the washed laundry. That is, the electric heater (7) is built in the lower space between the rotary tank 3 and the fixed tank (2), the washing water is heated to about 90 degrees to boil the laundry.

The drum washing machine configured as described above puts laundry into the rotating tub 3 and performs washing. The rotating tub 3 rotates while receiving the rotational force of the driving motor 5 through the belt 6b. The laundry in the interior is rotated by the rotary motion of the rotating tub 3 or is lifted by a lifter (not shown) to be washed by being dropped. And during the dehydration administration, the laundry is dewatered by the high speed rotation of the rotating tub (3). The dewatered water exits to the fixed tank 2 through the dehydration hole 3a, and is subsequently drained to the outside by a drainage device (not shown).

On the other hand, in the case of washing the washed laundry, a predetermined amount of washing water is supplied to the fixing tank 2, and power is supplied to the electric heater 7 provided at the lower end of the rotating tank 3 to heat the washing water. Therefore, the washing water is heated by the heat generated by the electric heater 7, and thus the laundry is boiled and steamed easily.

However, such a conventional drum washing machine, as shown in Figure 1, because the electric heater (7) is installed in a position slightly raised from the lower end of the space between the rotating tank (3) and the fixed tank (2), a large amount of washing water There is a problem that needs to be heated.

That is, the washing water level must be always kept higher than the electric heater 7 at a certain level so that the electric heater 7 is not exposed to air so as not to overheat. Therefore, a lot of washing water is supplied to the electric heater (7) located slightly above the upper portion always locked, and the heating time of the electric heater (7) becomes long because it has to be heated. In addition, the washing water level is higher than the lowest end of the rotary tub 3 in which the laundry is contained, so that the washing water must be supplied in consideration of the amount absorbed by the laundry. In fact, a drum washing machine with a maximum washing capacity of 6 Kg requires about 21 liters of washing water when the laundry is boiled, causing power waste.

The present invention is to solve such a problem, an object of the present invention is to install the electric heater in the space between the drum washing machine fixing tank and the rotating tank to heat the wash water in the fixed tank during the stroke to wash the laundry, electric heater By installing in the upper space of the bottom of the fixing tank coincides with the lowermost end of the fixing tank vertical axis line, it is possible to use the minimum amount of wash water enough to lock the electric heater to provide an electric heater of the drum washing machine to reduce the power consumption.

1 is a perspective view schematically showing a conventional drum washing machine.

Figure 2 is a side cross-sectional view showing the overall structure of a drum washing machine to which the present invention is applied.

3 is a cross-sectional view taken along the line A-A of FIG. 2, showing the installation position of the electric heater.

* Description of the symbols for the main parts of the drawings *

10. Housing 20. Fixing tank

21. Bottom 22. Forming part

30. Rotating tank 33. Rotating shaft

37. Belt 38. Drive motor

50. Electric heater 60. Control part

The present invention for achieving the object, the suspension is installed in the transverse direction in the housing and the cylindrical tub fixed in wash water, installed in a fixed interval spaced concentrically spaced in the interior of the fixed tub, a plurality of dewatering holes perforated rotary tub, One end is combined with the center of the rear end of the rotary tub, the other end is provided with a rotating shaft, the rear end of the fixed tub is fixed via a bracket and connected to the pulley via a belt, the drive motor for rotating the rotary tub through the rotating shaft, In the drum washing machine is provided in the space between the rotating tank and equipped with an electric heater for heating the fresh water in the fixed tank during the stroke to boil the laundry,

On the bottom surface of the front side of the fixing tank which is coincident with the vertical axis of the fixing tank, a forming part protruding downward is provided.

The electric heater is characterized in that it is installed in the transverse direction in the space immediately above the bottom surface of the fixing tank through the forming unit.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. Figure 2 is a side cross-sectional view showing the overall structure of the drum washing machine according to the present invention, Figure 3 is a cross-sectional view showing the installation position of the electric heater installed in the space immediately above the bottom surface of the fixing tank.

The drum washing machine to which the present invention is applied is suspended in a fixed tub 20 in which a drum-shaped rotary tub 30 is rotatably mounted in a rectangular cylindrical housing 10 forming an external appearance. . Cylindrical fixing tank 20 is suspended in the transverse direction to the fresh water, a plurality of buffer spring (buffer spring, 11) is coupled to the ceiling of the housing 10 for this purpose, the fixing tank 20 The shock absorbing member 12 is provided.

The drum-shaped rotating tub 30 is installed in the fixed tub 20 so as to be spaced apart at regular intervals, and the dewatering hole 31 is drilled over the entire surface so that the water is fixed in the tub 20 and the rotating tub ( 30) flows through, and the dewatered water from the rotating tub 30 during the dehydration is discharged to the fixed tank (20). The inner circumferential surface of the rotating tub 30 is provided with a plurality of lifters 32 protruding inwardly in a "V" shape to form a 120-degree interval so that laundry is pulled up and dropped again when the rotating tub 30 is rotated. In addition, the can balancer 40 in which the plurality of steel balls 41 are built in the circumferential direction is installed at both end portions of the rotating tub 30 to solve the imbalance caused by the eccentricity of the laundry during washing or dehydration stroke. Reduce.

As a means for rotating the rotating tub 30, the rotating shaft 33, the pulley 36, the driving motor 38, and the like are configured outside the fixing tub 20. The rear plate of the rotating tub 30 is coupled to the end portion of the rotary shaft 33, the rotary shaft 33 is rotatably supported by the bearing 35 of the bearing housing 34 coupled with the fixed tub 20 A pulley 36 is provided at the tip. The drive motor 38 is fixed to the lowermost end of the rear side of the fixing tank 20 by using a bracket 39, and the pulley 36 and the drive motor 38 are connected to each other via a belt 37. The rotational force of 38 is transmitted to the pulley 36 by the belt 37, and the rotating shaft 33 is rotated accordingly.

On the other hand, in the space between the fixing tank 20 and the rotating tank 30 is provided with an electric heater 50 of 2500W class to boil slung laundry, which is a characteristic element of the present invention, the fixing tank installed in the horizontal direction (20) It is configured at the lowest end of the interior and can be sufficiently submerged even by the minimum amount of washing water. To this end, a forming part 22 protruding outwardly inclined is formed on the front bottom surface 21 that is aligned with the vertical axis line of the fixing bath 20, and the electric heater 50 passes through the forming part 22. (20) It is fixed in the transverse direction through the rubber gasket 51 in the space immediately above the bottom surface. As a result, the driving motor 38 is positioned so as not to interfere with the assembly process or after-sales service.

The driving of the electric heater 50 is made by an operation command of the control unit 60 provided on the upper portion of the housing 10. When the user performs a boiling stroke by operating the operation button 61, a predetermined amount of washing water is performed. After flowing into the fixing tank 20, the electric power to the electric heater 50 generates heat.

Next will be described the operation and effect of the drum washing machine according to the invention configured as described above.

First, when a user puts laundry into the rotating tub 30 and operates the control unit 50, the washing water in which detergent is dissolved is introduced into the fixing tub 20. In addition, washing, rinsing, and dehydration are performed according to the washing course selected by the user. That is, when the standard washing is selected, the rotating tub 30 rotates by receiving the rotational force of the driving motor 38 through the belt 37. Accordingly, the laundry in the rotary tub 30 is rolled up or pulled up by the lifter 32 to be washed. During the dehydration stroke, the laundry is dewatered by the high speed rotation of the rotary tub 30, and the dehydrated water is drained to the fixed tub 20 through the dehydration hole 31 and drained to the outside.

On the other hand, in the case of dirty laundry, the user operates the control unit 60 to perform a washing operation boiled. In this case, a small amount of washing water is temporarily introduced into the fixing tank 20 and the electric heater 50 is driven to heat it, so that the washing water on the bottom surface of the fixing tank 20 is heated to boil steam. It's easy to get rid of steam during the laundry administration. Since the electric heater 50 is installed in the transverse direction in the space immediately above the bottom surface 21 on the front side of the fixing tank 20, it can be displaced from the driving motor 38 and facilitates its assembly and after-sales service. , The electric heater 50 may perform a boil function through the minimum amount of washing water can be locked.

That is, by supplying only the washing water that the electric heater 50 located at the bottom of the fixing tank 20 can be locked during the washing operation of the drum washing machine, a small amount of washing water can be utilized to drive the electric heater 50. It can reduce and prevent the overheating phenomenon of the electric heater (50). In fact, as a result of the inventors' experiment, the electric heater 50 was installed in this way, even if the washing water of approximately 2 L was supplied to the fixing tank 20, the washing of the drum washing machine could be sufficiently performed.

As described in detail above, the drum washing machine according to the present invention heats the fresh water in the fixing tank during the stroke of washing the laundry by installing an electric heater in the space between the fixing tank and the rotating tank, the electric heater is fixed vertical axis It was installed in the transverse direction in the space directly above the bottom of the fixing tank coinciding with the bottom end of the ship. Therefore, it is possible to use the minimum amount of washing water to lock the electric heater can reduce the power consumption, there is an advantage that the overheating of the electric heater is prevented.

Claims (1)

Suspended in the transverse direction in the housing 10 and the cylindrical fixed tank 20 is the wash water is freshly installed, a predetermined interval spaced concentrically spaced in the interior of the fixing tank 20 and a plurality of dehydration holes (31) Perforated rotary tub 30, one end is coupled to the central portion of the rear end of the rotary tub 30, the other end of the rotary shaft 33 is provided with a pulley 36, the lower end of the rear side of the fixing tank 20 of the bracket ( 39 and a driving motor 38 and the fixing tank 20 which are connected to the pulley 36 via the belt 37 to rotate the rotating tub 30 through the rotating shaft 33. In the drum washing machine provided in the space between the rotating tub 30 and equipped with an electric heater 50 for heating the wash water freshened in the fixed tank 20 during the stroke to wash the laundry, On the bottom surface 21 of the front side of the fixing tank 20 which is coincident with the vertical axis of the fixing tank 20, a forming part 22 is formed to protrude downward. The electric heater 50 penetrates through the forming unit 22, the electric heater of the drum washing machine, characterized in that it is installed in the horizontal direction immediately above the bottom surface 21 of the fixing tank (20).