KR102138093B1 - Apparatus for anti-freezing of draining hose of washing machine and method for the same - Google Patents

Abstract

An apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention includes: a drain body unit connected to a drain hose as a pump housing for draining washing water; a wire-shaped vibration unit provided in a lengthwise direction inside the drain hose and vibrating; at least one excitation unit provided at a part where the drain body unit and the drain hose are connected, and vibrating the vibration unit using ultrasonic waves generated by receiving an external electric signal; and a control unit that senses the temperature and flow rate of the washing water remaining in the drain hose, and controls the excitation unit based on a detection result.

Description

Anti-freezing device of washing machine drain hose and its method{APPARATUS FOR ANTI-FREEZING OF DRAINING HOSE OF WASHING MACHINE AND METHOD FOR THE SAME}

The present invention relates to an apparatus for preventing freezing of a drain hose of a washing machine, and more particularly, to an apparatus for preventing freezing of a drain hose of a washing machine and a method for preventing freezing of a drain hose by applying ultrasonic vibration to the drain side of the washing machine. .

In general, a washing machine is a device that removes foreign substances from a laundry cloth due to friction between water and a laundry cloth. The washing machine includes a water supply device for supplying water to a water tank, and a drainage device for discharging water in the water tank to the outside of the washing machine. Is provided. At this time, the water supply device is composed of a water supply valve and a curved water supply pipe, and the drainage device is composed of a drain pump and a drain pipe.

In using the washing machine, there is no freezing problem in the summer season, but the residual water remaining in the water tank, water supply and drainage system after washing is frozen in the winter season makes the normal operation of the washing machine difficult and shortens the life of the washing machine. do.

In order to prevent this, in the prior art, a method of maintaining the temperature of the residual water as an image by sensing the temperature or detecting a change in the water level in the water storage tank or heating the supply/reception unit or applying power to the heating wire, the inside of the washing machine when the anti-icing mode is activated in the standby state In order to circulate the residual water, a method of rapidly draining water at a predetermined cycle has been used.

However, these technologies have a disadvantage in that they take a relatively long time to thaw when the residual water is frozen.

In the case of a method using a hot wire or hot air, energy is additionally consumed because a lot of thermal energy must be applied to reach the target temperature according to the external temperature, and a difference between the wall of the drain hose and the external temperature is formed to form a difference between the outer peripheral surface of the drain hose and the washing machine. It can promote condensation.

In the case of the method of controlling the timing of the drainage by detecting the change in the water level, there is the inconvenience of having to wait while thawing to the condition where the drainage stroke is possible because it does not prevent freezing.

When using the freezing prevention mode, there is a disadvantage in that the inside of the washing tank must be emptied in advance for smooth water supply and additional water is consumed in that water is supplied only for freezing prevention.

As a related prior art, there is Republic of Korea Patent Publication No. 10-2010-0116050 (name of the invention: a faucet for preventing freezing using a piezoelectric actuator, publication date: October 29, 2010).

Embodiments of the present invention is to generate the ultrasonic vibration on the drain side of the washing machine to vibrate the wire inside the drain hose to prevent freezing of residual water in the drain hose exposed to temperatures below the freezing point, or to quickly thaw during freezing. Provided is a device for preventing freezing of a washing machine drain hose and a method therefor.

The problem to be solved by the present invention is not limited to the problem(s) mentioned above, and another problem(s) not mentioned will be clearly understood by those skilled in the art from the following description.

The apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention is a pump housing for draining laundry, a drainage body part connected to the drain hose, and provided in a longitudinal direction inside the drain hose to vibrate the wire shape. In the eastern part, at least one is provided at a portion where the drainage body portion and the drainage hose are connected, an oscillating portion that vibrates the vibration portion using ultrasonic waves generated by receiving an external electric signal, and washing water remaining in the drainage hose It includes a control unit for sensing the temperature and flow rate of, and controls the operation of the excitation unit based on the detection result.

In addition, the vibrating unit according to an embodiment of the present invention may be a spiral wire for vibrating in a direction parallel to the drainage direction of the washing water.

In addition, the vibrating unit according to an embodiment of the present invention may be a straight wire for vibrating in a direction crossing the drainage direction of the washing water.

In addition, the apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention has a rod shape between the vibration unit and the drain hose, and further includes a support unit for supporting the vibration unit. It can be arranged at predetermined intervals along the drainage direction of the wash water.

In addition, the apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention may further include a filling unit provided to fix the support between the outside of the vibration unit and the inside of the drain hose.

In addition, the vibrating unit according to an embodiment of the present invention may be provided with one wire on the inner circumferential surface of the drain hose, or a plurality of wires may be provided along the inner circumferential surface of the drain hose.

In addition, the vibrator according to an embodiment of the present invention may be arranged radially along an inner circumferential surface at the inlet portion of the drain hose connected to the drain body.

In addition, the apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention includes a fixing member provided at both ends of the drain hose connected to the drain body portion in a radial direction so that both ends are fixed inside the drain hose. And, the vibrating portion may be coupled to one surface of the fixing member.

In addition, the apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention is provided at an inlet portion of the drain hose connected to the drain body part in a radial direction so that both ends have elastic force inside the drain hose and are fixed. A member and a transmission member provided on the elastic member to transmit the elastic force to the vibration unit, the excitation unit may be coupled to one end of the elastic member.

In addition, the resonance frequency of the vibration unit according to an embodiment of the present invention may be 10 kHz to 30 kHz.

In addition, the control unit according to an embodiment of the present invention is a sensor unit for sensing the temperature and flow rate of the wash water remaining in the drain hose, the freezing unit determining the freezing condition of the drain hose according to the temperature and flow rate, And a driving unit configured to control driving of the excitation unit based on the determination result.

In addition, the apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention further includes a hollow drainage connecting portion connecting the drainage body portion and the drainage hose, and an annular member formed on an outer circumferential surface of the drainage connection portion. The sensor unit may be arranged at regular intervals along the circumference of the annular member.

In the method of preventing freezing of a drain hose of a washing machine according to an embodiment of the present invention, a method of preventing freezing of the drain hose using a vibrating unit provided in the drain hose of the washing machine and a vibrator vibrating the vibration unit through ultrasonic waves , Sensing the temperature and flow rate of the washing water remaining in the drain hose of the washing machine, determining the freezing condition of the drain hose according to the temperature and flow rate, and controlling the driving of the exciter based on the determination result It includes the steps.

The freezing condition according to an embodiment of the present invention may include a temperature condition in which the temperature of the drain hose is below a preset temperature threshold, and a flow condition in which the flow rate of the drain hose is greater than or equal to a preset flow threshold.

According to an embodiment of the present invention, by generating ultrasonic vibration on the drain side of the washing machine to vibrate the wire inside the drain hose to prevent freezing of residual water in the drain hose exposed to temperatures below the freezing point, or to quickly thaw upon freezing. Can.

In addition, according to an embodiment of the present invention, bubbles generated by cavitation caused by ultrasonic vibration applied to the drain hose strike the wall surface of the drain hose, thereby agglomerating and accumulating fine contaminants to adhere to the inside of the wall. Can be suppressed.

1 is a state diagram showing a state in which a freeze prevention device of a washing machine drain hose according to an embodiment of the present invention is used.
2A and 2B are views illustrating a device for preventing freezing of a washing machine drain hose according to an embodiment of the present invention.
3A to 3D are diagrams illustrating various embodiments of the vibrating unit in one embodiment of the present invention.
4A to 4C are diagrams for explaining various embodiments of an exciter in an embodiment of the present invention.
5 is a view illustrating a mechanism in which solidification of residual water in a drain hose is suppressed according to ultrasonic vibration in an embodiment of the present invention.
6 is a block diagram illustrating the configuration of a control unit in an embodiment of the present invention.
7 is a flowchart illustrating a method for preventing freezing of a washing machine drain hose according to an embodiment of the present invention.
8 is a flowchart illustrating a method for specifically preventing the freezing of FIG. 7.

Advantages and/or features of the present invention and methods for achieving them will become apparent by referring to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

The environment in which the washing machine that we use in everyday life is provided is mainly an environment in which heating is difficult, such as a veranda or toilet. In particular, when the washing machine is exposed to an environment at a sub-zero temperature for a long time, the washing water discharge function frequently occurs due to the residual water freezing of the washing machine drain hose, which not only causes inconvenience to the user but also maintains additionally due to the washing machine failure. There will be a maintenance cost.

Accordingly, the present invention is to propose an apparatus and method for preventing residual water from freezing by applying vibrations of an ultrasonic band inside the drain pump housing and the drain hose.

1 is a state diagram showing a state in which a freeze-prevention device of a washing machine drain hose according to an embodiment of the present invention is used, a freeze-prevention device may be coupled to a side where washing water is drained to the washing machine 10.

In the pump housing, a hollow washing water inlet body portion (not shown) connected to a drain hose 20 connected to allow washing water from a washing tank to flow in, and a hollow drain body portion connected to a drain hose 20 to drain washing water. Each of 100 may be provided, and a motor 30 for performing a drainage operation of washing water may be provided and configured.

Although the present invention has been described based on an embodiment for preventing freezing of the drainage body portion 100 and the drain hose 20, it is sufficiently applicable to the washing water inlet body portion and the water supply portion.

In addition, the present invention has been described based on the washing machine using the forced pressurized drainage method, but it is possible to sufficiently apply the shape of the drainage body portion 100 to the natural drainage system in which no drainage pump is present.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2A and 2B are views illustrating a device for preventing freezing of a washing machine drain hose according to an embodiment of the present invention, and FIGS. 3A to 3D are various embodiments of a vibration unit in an embodiment of the present invention 4A to 4C are diagrams for explaining various embodiments of the exciter, and FIG. 5 is for an embodiment of the present invention. It is a block diagram showing to explain the configuration of the control unit.

2A and 2B, the apparatus for preventing freezing of a washing machine drain hose according to an embodiment of the present invention includes a drainage body part 100, a vibration part 200, an excitation part 300, and a control part 400. Can be configured.

The drain body 100 may be connected to the drain hose 20 as a pump housing for draining the washing water of the washing machine.

Here, the pump housing may have a structure in which hollow housings having a predetermined length communicate with each other.

The drain body 20 may be in communication with the drain hose 20 in a direction perpendicular to the longitudinal direction.

The drain hose 20 is empty to allow washing water to flow, and may be formed to extend a predetermined length from a part of the drain body 100.

On the other hand, it may further include a hollow drainage connecting portion 110 connecting between the drainage body portion 100 and the drain hose 20.

The drain connecting portion 110 may serve as a medium for the washing water to be discharged from the drain body portion 100 to the drain hose 20, and preferably has a diameter smaller than the diameter of the drain hose 20.

At this time, a ring-shaped annular member 120 may be formed on the outer circumferential surface of the drain connection part 110.

The annular member 120 is a ring-shaped member formed along the circumference of the drainage connection portion 110 between the drainage body portion 100 and the drainage hose 20, and a control unit 400 to be described later may be provided.

For example, the sensor unit 410 of the control unit 400 may be disposed at regular intervals along the circumference of the annular member 120.

For reference, the drain hose 20 without the drain connection 110 may have a structure in direct communication with the drain body 100, in this case the sensor unit 410 is a drain body 100 or drain hose ( 20) may be provided.

The vibration unit 200 may be provided in the longitudinal direction inside the drain hose 20 to vibrate.

The vibrating part 200 has elasticity, such as a wire or a spring, and is preferably made of a metal material that does not react or corrode water and air.

The vibration unit 200 may be provided along the longitudinal direction from the inlet to the outlet of the drain hose 20, and may vibrate by receiving ultrasonic waves from the excitation unit 300, which will be described later.

Accordingly, a cavitation phenomenon occurs inside the drain hose 20, and the movement of the water molecules receiving the vibration becomes active, so that the residual water can be drained without solidification. The mechanism in which clotting of the washing water to the residual water is suppressed will be described later in detail with reference to FIG. 5.

The vibrating unit 200 of the present invention may be implemented as either a spiral wire for vibrating in a direction parallel to the drainage direction of washing water or a straight wire for vibrating in a direction crossing the drainage direction of washing water.

When the vibrator 200 is implemented as a spiral wire, it may vibrate in the form of a longitudinal wave within the drain hose 20, and when implemented as a straight wire, it may vibrate in the form of a transverse wave within the drain hose 20.

A support part 210 for supporting the vibration part 200 may be further included between the vibration part 200 and the drain hose 20.

The support part 210 may be implemented in a rod shape as a wire form having elastic force, such as the vibration part 200.

The support part 210 may be provided as a set with a predetermined distance along the radial direction of the vibration part 200 between the outside of the vibration part 200 and the inside of the drain hose 20.

The support 210 may be arranged at predetermined intervals along the drainage direction of the washing water, and in this embodiment, it is preferable to be arranged at regular intervals.

Hereinafter, various embodiments of the vibration unit 200 will be described with reference to FIGS. 3A to 3D.

In one embodiment, as shown in Figure 3a, when the vibration unit 200 is implemented with a straight wire, the two support portions 210 have a 180-degree interval and the vibration unit 200 and the drain hose 20 It may be provided as one set in between, it may be implemented as a total of four sets along the drainage direction of the wash water.

In another embodiment, as shown in Figure 3b, when the vibrating unit 200 is implemented as a spiral wire, the three support parts 210 have a 120-degree interval and the vibrating part 200 and the drain hose 20 It may be provided as one set in between, it may be implemented as a total of four sets along the drainage direction of the wash water.

In this case, the filling part 220 may be further included to securely fix the support part 210 between the vibration part 200 and the drain hose 20.

That is, referring to FIGS. 3A and 3B, the filling part 220 is filled in a space between the outside of the vibration part 200 that is the space where the support part 210 is formed and the inside of the drain hose 20, rubber, latex As can be implemented with a material that can absorb the impact.

On the other hand, the vibration unit 200 may be provided inside the drain hose 20 without the support 210 to vibrate.

For example, as shown in FIG. 3C, one vibration unit 200 is provided on the inner circumferential surface of the drain hose 20, or as shown in FIG. 3D, a plurality of vibration units 200 are provided with the drain hose 20. It may be provided along the inner peripheral surface. In the drawing, the vibrating unit 200 is shown as a spiral wire, but may be applied by changing to a straight wire.

The vibrating part 300 may be provided with at least one portion where the drainage body part 100 and the drainage hose 20 are connected.

That is, the excitation part 300 is disposed at the inlet portion of the drain hose 20 and can directly apply vibration to the vibration part 200 or indirectly apply vibration using a transmission member 330, etc. This will be described in detail with reference to FIGS. 4A to 4C.

The vibrating unit 300 according to the present invention is made of a piezoelectric ceramic and can vibrate the vibrating unit 200 using ultrasonic waves generated by receiving an external electric signal.

That is, the vibrating unit 300 receives an AC electric signal of a constant cycle from the outside to generate ultrasonic waves in the ultrasonic band, and the generated ultrasonic waves are transmitted to the vibrating unit 200 so that the vibrating unit 200 is in the direction of drainage of washing water. Based on, it will vibrate in the form of longitudinal or transverse waves.

At this time, the ultrasonic wave generated from the excitation unit 300 is preferably set so that the resonant frequency of the vibration unit 200 exceeds the audible frequency band, and the AC electric signal received from the outside is also preferably set correspondingly.

For example, the resonance frequency of the vibration unit 200 may be 10 kHz to 30 kHz, and specifically, it is preferable that it is 20 kHz or more. The above range corresponds to a range in which the user does not suffer from noise damage and can obtain a high effect on freezing and thawing of the drain hose 20.

Hereinafter, various embodiments of the exciter 300 will be described with reference to FIGS. 4A to 4C.

In one embodiment, as shown in Figure 4a, the excitation portion 300 may be disposed radially along the inner circumferential surface of the inlet portion of the drain hose 20 connected to the drainage body portion 100.

At this time, there is no limit to the number of vibrating parts 300 arranged, and the vibrating part 200 may be directly connected to one side of the vibrating part 300 as a spiral wire.

In another embodiment, as shown in Figure 4b, the inlet portion of the drain hose 20 connected to the drain body portion 100 is provided with a fixing member 310, both ends are fixed to the inside of the drain hose 20 It may be, the vibrating part 300 may be coupled to one surface of the fixing member (310).

Here, the fixing member 310 is a member provided in the radial direction of the hose at the inlet portion of the drain hose 20, and the excitation part 300 is preferably disposed at the center of the fixing member 310.

In addition, the vibration unit 200 may be directly connected to one side of the vibrating unit 300 as a spiral wire.

In another embodiment, as shown in Figure 4c, the elastic member is fixed at both ends of the inlet portion of the drain hose 20 connected to the drainage body portion 100 has an elastic force inside the drain hose 20 ( 320, and is provided on the elastic member 320 may further include a transmission member 330 for transmitting the elastic force to the vibration unit 200, the excitation unit 300 is one end of the elastic member 320, that is It may be coupled to the inside of the drain hose (20).

At this time, the elastic member 320 is a member provided in the radial direction of the hose at the inlet portion of the drain hose 20, and the transmission member 330 transmits the elastic force of the elastic member 320 to the vibration unit 200. It is preferable that the eastern part 200 is disposed at the center of the elastic member 320 so that it can vibrate effectively.

In addition, the vibration unit 200 may be indirectly connected to the vibrating unit 300 as a straight wire.

By this structure, the ultrasonic waves generated in the vibrating part 300 are transmitted to the elastic member 320, and the elastic force of the elastic member 320 generated according to the transmitted ultrasonic waves is transmitted to the transmission member 330, and the transmission member It is possible to vibrate the straight wire 200 in the transverse direction by the elastic force transmitted to (330).

The control unit 400 may detect the temperature and flow rate of the washing water remaining in the drain hose 20, and control the operation of the excitation unit 300 based on the detection result.

To this end, as illustrated in FIG. 5, the control unit 400 may include a sensor unit 410, a freezing determination unit 420, and a driving unit 430.

The sensor unit 410 may include a temperature sensor and a flow sensor, and may detect the temperature and flow rate of washing water remaining in the drain hose 20.

As described above, the sensor unit 410 may be directly provided in the drain body portion 100 or the drain hose 20, or may be disposed along the circumference of the annular member 120.

The freezing determination unit 420 may determine freezing conditions of the drain hose 20 according to temperature and flow rate.

The freezing unit 420 may determine freezing conditions in consideration of both the temperature change and the flow rate change of the residual water in the drain hose 20.

Specifically, the freezing condition may include a temperature condition in which the temperature of the drain hose 20 is less than or equal to a preset temperature threshold and a flow condition in which the flow rate of the drain hose 20 is greater than or equal to a preset flow threshold.

In other words, the freezing determination unit 420 is based on the case where the temperature of the drain hose 20 is lower than the preset temperature threshold and the flow rate of the drain hose 20 is higher than the preset flow threshold. It is possible to determine whether there is freezing.

The driving unit 430 may control driving of the excitation unit 300 based on the determination result.

Specifically, the driving unit 430 has a part in which the temperature of the drain hose 20 is lower than the preset temperature threshold and the flow rate of the drain hose 20 is higher than the preset flow threshold. 300) can be driven.

For reference, in addition to the sensor unit 410, the freezing determining unit 420 and the driving unit 430 may also be directly provided in the drain body 100 or the drain hose 20, or be disposed along the circumference of the annular member 120. Can.

Thus, according to an embodiment of the present invention, by generating ultrasonic vibrations on the drain side of the washing machine to vibrate the drain hose to prevent freezing of residual water in the drain hose 20 exposed to temperatures below the freezing point or quickly upon freezing. Can be thawed.

FIG. 6 is a view illustrating a mechanism in which solidification of residual water in a drain hose is suppressed according to ultrasonic vibration.

As shown in FIG. 6, when the vibrating unit 200 vibrates according to the above-described structure, a cavitation phenomenon occurs in a portion where the pressure of the residual water in the drain hose 20 suddenly decreases, so that the surrounding water receiving the vibration is transmitted. The kinetic energy of the molecule increases.

As a result, hydrogen bonding for the water to solidify into ice is hindered, resulting in a partially supercooled state due to failure to solidify despite exposure to temperatures below the freezing point.

Consequently, the residual water is discharged along the draining direction in a liquid or slurry state without remaining in the drain hose 20.

Thus, according to an embodiment of the present invention, bubbles generated by cavitation caused by ultrasonic vibration applied to the drain hose 20 strikes the wall surface of the drain hose 20, thereby causing micro-contamination to stick to the inside of the wall surface. Agglomeration and accumulation of substances can be suppressed.

7 is a flowchart illustrating a method for preventing freezing of a washing machine drain hose according to an embodiment of the present invention, and FIG. 8 is a flowchart illustrating a method for specifically preventing the freezing of FIG. 7.

The freezing prevention method of the washing machine drain hose 20 according to an embodiment of the present invention uses the above-described freezing prevention device of the washing machine drain hose 20, and is provided in the drain hose 20 of the washing machine to vibrate. It corresponds to a method of preventing freezing of the drain hose 20 using 200) and an excitation part 300 that vibrates the vibration part 200 through ultrasonic waves.

2A, 2B, and 7, a method of preventing freezing of a washing machine drain hose 20 according to an embodiment of the present invention detects the temperature and flow rate of washing water remaining in the drain hose 20 of the washing machine. Step (S710), the step of determining the freezing condition of the drain hose 20 according to the temperature and flow rate (S720) and the step of controlling the driving of the excitation unit 300 based on the determination result may include (S730). .

First, in the sensing step (S710 ), the temperature and flow rate of the residual water may be respectively detected using the sensor unit 410 in the control unit 400 of the freeze prevention device of the washing machine drain hose 20.

Next, in the determining step S720, the temperature of the drain hose 20 may be determined by considering both the temperature condition below the preset temperature threshold and the flow rate condition of the drain hose 20 above the preset flow rate threshold.

Specifically, as illustrated in FIGS. 2A, 2B, and 8, the temperature of the residual water in the drain hose 20, which is the first condition of the determination unit in the control unit 400 of the freeze prevention device of the washing machine drain hose 20, is shown. It may be determined whether or not a predetermined temperature threshold is lowered (S722 ).

As a result of the determination, when the temperature of the residual water is below the temperature threshold (YES in S722), it can be determined whether the flow rate of the residual water in the drain hose 20, which is the second condition, is greater than or equal to a preset flow threshold (S724). . For reference, when the temperature of the residual water is greater than or equal to the temperature threshold ("No" in S722), step S710 may be repeatedly performed.

As a result of the determination, when the flow rate of the residual water is equal to or higher than the flow rate threshold (YES in S724), the control unit (S70) may drive the excitation unit 300 of the freeze protection device of the washing machine drain hose 20. For reference, if the flow rate of the residual water is less than or equal to the flow rate threshold ("No" in S724), the process returns to step S722 to determine whether the temperature of the residual water is below the temperature threshold.

Next, referring to FIGS. 2A, 2B, and 7 again, in the controlling step S730, when the result of the determination in step S720 is satisfied, when the freezing condition is satisfied, the driving unit of the freezing preventing device of the washing machine drain hose 20 The exciter 300 may be driven using 430, and the exciter 300 may not be driven when the freezing condition is not satisfied.

So far, specific embodiments according to the present invention have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the claims and equivalents.

As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and modifications from these descriptions will be made by those skilled in the art to which the present invention pertains. Deformation is possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will be said to fall within the scope of the spirit of the present invention.

10: washing machine
20: drain hose
100: drain body
110: drain connection
120: annular member
200: vibrating unit
210: support
220: filling part
300: having
310: fixing member
320: elastic member
330: transmission member
400: control unit
410: sensor unit
420: freezing unit
430: drive unit

Claims (14)

A pump body for draining laundry, a drain body part connected to a drain hose;
A wire-shaped vibration part provided in the longitudinal direction of the drain hose to vibrate;
It is provided with at least one in the portion where the drain body portion and the drain hose is connected, a vibrator for vibrating the vibration unit using ultrasonic waves generated by receiving an external electrical signal; And
Control unit for sensing the temperature and flow rate of the washing water remaining in the drain hose, and controlling the operation of the excitation unit based on the detection result
Freeze prevention device of a washing machine drain hose, characterized in that it comprises a.
According to claim 1,
The vibration unit is a freeze prevention device of the washing machine drain hose, characterized in that the spiral wire for vibrating in a direction parallel to the draining direction of the washing water.
According to claim 1,
The vibrating unit is a freeze prevention device for a washing machine drain hose, characterized in that the straight wire for vibrating in a direction crossing the direction of drainage of the washing water.
The method of claim 2 or 3,
It has a rod shape between the vibrating unit and the drain hose and is further provided with a support for supporting the vibrating unit,
The support portion freeze prevention device of the washing machine drain hose, characterized in that arranged at a predetermined interval along the draining direction of the washing water.
◈ Claim 5 was abandoned when payment of the set registration fee was made.◈ According to claim 4,
And a filling part provided to fix the support part between the outside of the vibration part and the inside of the drain hose.
According to claim 2,
The vibration unit
A device for freezing of a washing machine drain hose, characterized in that one wire is provided on the inner circumferential surface of the drain hose, or a plurality of wires are provided along the inner circumferential surface of the drain hose.
According to claim 2,
The excitation part
A freeze-prevention device for a washing machine drain hose, characterized in that it is arranged radially along an inner circumferential surface at an inlet portion of the drain hose connected to the drain body.
According to claim 2,
The inlet portion of the drain hose connected to the drain body portion is provided with a fixing member provided at both ends in a radial direction and fixed inside the drain hose,
The anti-freezing device of the washing machine drain hose, characterized in that the vibrating portion is coupled to one surface of the fixing member.
◈ Claim 9 was abandoned when payment of the set registration fee was made.◈ According to claim 3,
An inlet portion of the drain hose connected to the drain body portion is provided in a radial direction, and both ends have an elastic force inside the drain hose to be fixed, and an elastic member is provided on the elastic member to transmit the elastic force to the vibration unit It further includes a transfer member,
The vibrating unit freeze prevention device of the washing machine drain hose, characterized in that coupled to one end of the elastic member.
According to claim 1,
The resonant frequency of the vibration unit is 10 kHz to 30 kHz, characterized in that the freeze prevention device of the washing machine drain hose.
According to claim 1,
The control unit
A sensor unit for sensing the temperature and flow rate of the washing water remaining in the drain hose;
An icing determination unit to determine an icing condition of the drain hose according to the temperature and flow rate; And
A driving unit to control driving of the excitation unit based on the determination result
Freeze prevention device of a washing machine drain hose, characterized in that it comprises a.
The method of claim 11,
A hollow drainage connecting portion connecting between the drainage body portion and the drainage hose. Further comprising an annular member formed on the outer peripheral surface of the drain connection,
The sensor unit is arranged along the circumference of the annular member, the freeze prevention device of the washing machine drain hose.
As a pump housing for draining the wash water, a drain body part connected to a drain hose, a wire-shaped vibration part provided in the longitudinal direction inside the drain hose to vibrate, and the drain body part and the drain hose connected In at least one of the parts provided in the method of preventing the freezing of the drain hose by using an excitation unit that vibrates the vibration unit through ultrasonic waves generated by receiving an external electrical signal,
Sensing temperature and flow rate of washing water remaining in the drain hose of the washing machine;
Determining freezing conditions of the drain hose according to the temperature and flow rate; And
Controlling driving of the excitation unit based on a determination result
Method for preventing freezing of a washing machine drain hose, characterized in that it comprises a.
The method of claim 13,
The freezing conditions are
A temperature condition in which the temperature of the drain hose is below a preset temperature threshold; And
A method for preventing freezing of a washing machine drain hose, characterized in that it comprises a flow condition in which the flow rate of the drain hose is equal to or greater than a predetermined flow threshold.

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