KR20000002190A - Electric heater of drum washer - Google Patents

Abstract

PURPOSE: An electric heater of a drum washer is provided to use minimal amount of water and to make the electric connection easy. CONSTITUTION: An electric heater of a drum washer comprises: a cylindrical fixed tub(20) installed to suspend horizontally inside a housing(10) and to contain water; a rotary tub(30) installed at a certain interval around a circle inside the fixed tub and having many dehydration holes(31); a rotary shaft(33), its one end is connected to the center of the backward end of the rotary tub and having a pulley(36) on the other end of itself; and a drive motor(38) fixed via a bracket(39) on the lowest end of the backward of the fixed tub and connected to the pulley via a belt(37) and to rotate the rotary tub using the rotary shaft.

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 this problem, the main object of the present invention is to install the electric heater in the space between the fixed bath and the rotating bath to heat the wash water fresh water in the fixed bath during the stroke to wash the laundry, the electric heater By installing in the horizontal direction immediately above the bottom of the fixing tank, it is possible to utilize 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.

In addition, an object of the present invention is to provide an electric connection of a drum washing machine that facilitates electrical connection with a wire harness by separately configuring a connection member having one end connected to the terminal portion of the electric heater exposed to the outside of the fixing tank and having a female terminal provided at the front end thereof. To provide a heater.

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 perspective view showing an electric heater according to the present invention.

* 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 53. Connection member

53a..wire 53b..female terminal

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 coupled to the center of the rear end portion 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, fixed In the drum washing machine provided in the space between the bath and the rotating tank and equipped with an electric heater for heating the fresh water in the fixed bath during the stroke to boil the laundry,

The electric heater is installed in the horizontal direction in the space directly above the bottom surface of the front side of the fixing tank, which is coincident with the vertical axis of the fixing tank.

The terminal portion of the electric heater exposed to the outside of the fixing tank is characterized in that the connection member is provided with a wire harness for guiding the power supply to the electric heater and coupled to be detachable.

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 perspective view showing an electric heater according to the present invention.

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.

In addition, the terminal member 53 of the electric heater 50 exposed to the outside of the bottom surface 21 of the fixing tub 20 is provided with a connecting member 53 provided to be attached to and detached from the wire harness 70. The connecting member 53 is composed of a wire 53a having a predetermined length, one end of which is integrally joined by the terminal portion 52 and the welding means of the electric heater 50, and the other end of the female terminal 53b. Is composed. Therefore, the wire harness 70 for guiding the power supply to the electric heater 50 is provided by the control unit 60 to be described later, wherein the female terminal 53b is provided at the mail terminal 71 provided at the separated wire end. The power is supplied to the electric heater 50 by being fitted. The separate connection member 53 is configured in the electric heater 50 as described above to facilitate the assembly of the electric heater 50. That is, as described above, the connecting member 53 is provided with the electric heater 50 provided in the terminal portion 52 on the bottom surface 21 of the fixing tub 20, and then the female terminal of the connecting member 53. Power is supplied by electrically connecting the wire harness 70 through the 53b and the mail terminal 71. At this time, the electric heater 50 is displaced from the drive motor 38 and the assembly is performed in the disassembled state from the wire harness 70 can facilitate the assembly installation thereof as a whole.

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 through the wire and the connecting member 53 of the wire harness 70 generates heat supply.

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 is installed in the space between the fixed bath and the rotating bath to heat the wash water in the fixed bath during the stroke to wash the laundry, the electric heater to the bottom of the fixed bath By installing horizontally in the space directly above the surface, it is possible to utilize the minimum amount of wash water enough to lock the electric heater can reduce the power consumption. In addition, one end portion is connected to the terminal portion of the electric heater exposed to the outside and a connecting member provided with a female terminal at the front end is provided separately, thereby facilitating electrical connection with the wire harness.

Claims (2)

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, The electric heater 50 is installed in the transverse direction in the space immediately above the bottom surface 21 of the front side of the fixing tank 20 to match the vertical axis of the fixing tank 20, A connection member connected to the terminal portion 52 of the electric heater 50 exposed to the outside of the fixing tank 20 and attached to and detachable from the wire harness 70 for guiding power supply to the electric heater 50. 53) is provided with an electric heater of a drum washing machine. The wire 53a of claim 1, wherein one end portion of the connection member 53 is connected to the terminal portion 52 of the electric heater 50 by welding means and extends to a predetermined length. An electric heater of a drum washing machine, comprising: a female terminal (53b) provided at the other end and inserted into the mail terminal (71) of the wire harness (70) to be electrically connected.