WO2021261773A1

WO2021261773A1 - Sensing device for dryer

Info

Publication number: WO2021261773A1
Application number: PCT/KR2021/006329
Authority: WO
Inventors: 이정윤; 최호; 김도윤; 노태균; 최형진; 최지훈; 홍관우
Original assignee: 삼성전자주식회사
Priority date: 2020-06-26
Filing date: 2021-05-21
Publication date: 2021-12-30
Also published as: KR20220000580A

Abstract

A sensing device for a dryer comprises: an energy harvester that generates electric power; a humidity sensor that senses humidity by receiving the electric power generated by the energy harvester; a circuit board on which the humidity sensor is mounted; a case that supports the circuit board; and a damper that surrounds at least a portion of the case and protects the case from external impact.

Description

Sensing device for dryer

The present disclosure relates to a dryer, and more particularly, to a sensing device for a dryer used in the dryer.

In general, a dryer includes a drum having a cylindrical shape into which an object to be dried is put, an air circulating device for circulating air in the drum, and a heater for heating medium temperature and high humidity air discharged from the drum into high temperature and low humidity air.

In order to effectively dry the object to be dried, the drum is formed to continuously rotate so that air of high temperature and low humidity can uniformly contact the object to be dried.

In order to check the drying state of the object to be dried, it is necessary to install a humidity sensor inside the drum. However, since the drum continuously rotates, there is a problem in that it is difficult to install a humidity sensor inside the drum and supply electricity.

Therefore, in the dryer according to the prior art, an electrode sensor is installed on a part of the drum that does not rotate, and the contact time and voltage with the object to be dried are measured to determine the degree of drying of the object to be dried.

However, although the humidity measurement method according to the prior art is simple to install, there is a problem in that the measured dryness of the object to be dried is inaccurate.

For example, the object to be dried does not contact the electrode sensor due to the eccentricity of the object to be dried. Alternatively, there may be a case in which only the dryness of a specific part of the object to be dried is measured because the object to be dried is not mixed well. In this case, the dryer incorrectly judges the degree of dryness of the object to be dried.

When the drying object is less dried, the consumer may feel inconvenience because it is necessary to further dry the object. Conversely, if the drying object is too dry, the drying object may be damaged.

Accordingly, there is a need for a method capable of accurately and conveniently measuring the degree of drying of an object to be dried when drying with a dryer.

The present disclosure has been made in view of the above-described problems, and relates to a sensing device for a dryer capable of accurately and conveniently measuring the degree of drying of an object to be dried.

A sensing device for a dryer according to an aspect of the present disclosure includes: an energy harvester generating electric power; a humidity sensor for sensing humidity by receiving power generated by the energy harvester; a circuit board on which the humidity sensor is mounted; a case supporting the circuit board; and a damper that surrounds at least a portion of the case and protects the case from external impact.

At this time, the case may be provided with an inlet so that external air can be introduced.

In addition, the case includes an upper case and a lower case, the upper case is provided with an inlet so that external air can be introduced into the case, and the lower case has an outlet so that the air inside the case can be discharged. can be provided.

In addition, a filter may be provided in the inlet or outlet to prevent water from flowing in.

In addition, the damper may include: a first damper forming an air chamber in upper and lower portions of the case; and a second damper forming an air chamber along the side of the case.

In addition, the damper may be provided with an inlet so that external air can be introduced into the damper and an outlet so that the air inside the damper can be discharged.

In addition, the case may be made of a rigid material, and the damper may be made of an elastic material.

In addition, the energy harvester may include: a cylinder; a coil wound around the cylinder; and a permanent magnet slidably inserted into the cylinder.

In addition, the sensing device for the dryer may include: a wireless communication unit configured to transmit data sensed by the humidity sensor to the outside; and a power supply unit for storing power generated by the energy harvester and supplying power to the humidity sensor and the wireless communication unit; and the wireless communication unit and the power supply unit may be mounted on the circuit board.

A sensing device according to another aspect of the present disclosure includes a humidity sensor; a communication module for wirelessly transmitting the data sensed by the humidity sensor to the outside; a circuit board on which the communication module is mounted; a case supporting the circuit board; and a damper that surrounds at least a portion of the case and protects the case from external impact.

In this case, the case may provide an internal space in which at least a portion of the circuit board is disposed, and the humidity sensor may be isolated from the internal space of the case and disposed outside the case.

In addition, the damper may be disposed such that air chambers are formed in upper and lower portions of the case.

In addition, the damper may be arranged to form an air chamber along the circumference of the case.

In addition, the damper may be provided with an inlet to allow air to be introduced from the outside.

In addition, it may further include a power supply for supplying power to the communication module.

In addition, the power supply unit may include an energy harvester that generates power according to the movement of the magnet.

In addition, the communication module may communicate using a Bluetooth method.

The sensing device for a dryer according to an embodiment of the present disclosure having the structure as described above is put into the drum of the dryer to measure the humidity and wirelessly transmit the humidity data. It has the advantage of being able to measure accurately.

1 is a perspective view illustrating a sensing device for a dryer according to an embodiment of the present disclosure;

2 is an exploded perspective view of a sensing device for a dryer according to an embodiment of the present disclosure;

3 is an exploded perspective view in which a damper is separated from a sensing device for a dryer according to an embodiment of the present disclosure;

4 is a cross-sectional view taken along line I-I of the sensing device for the dryer of FIG. 1;

5 is a cross-sectional view of the sensing device for the dryer of FIG. 1 taken along line II-II;

6 is a perspective view illustrating a case of a sensing device for a dryer according to an embodiment of the present disclosure;

7 is a perspective view illustrating a state in which the upper case is separated from the case of FIG. 6 ;

Fig. 8 is a bottom perspective view of the upper case of the case of Fig. 6;

9 is a rear perspective view illustrating a case of a sensing device for a dryer according to an embodiment of the present disclosure;

10 is a bottom perspective view illustrating an upper damper of a sensing device for a dryer according to an embodiment of the present disclosure;

11 is a perspective view illustrating a state in which a case is coupled to a lower damper of a sensing device for a dryer according to an embodiment of the present disclosure;

12 to 17 are plan views illustrating various examples of a plurality of ribs of a damper of a sensing device for a dryer according to an embodiment of the present disclosure;

18 is a front view illustrating another example of a case of a sensing device for a dryer according to an embodiment of the present disclosure;

19 is a plan view illustrating a sensing device for a dryer according to an embodiment of the present disclosure including the case of FIG. 18;

20 is a view showing a dryer using a sensing device for a dryer according to an embodiment of the present disclosure;

21 is a functional block diagram of a sensing device for a dryer and a dryer according to an embodiment of the present disclosure;

It should be understood that the embodiments described below are illustratively shown to help the understanding of the present disclosure, and the present disclosure may be implemented with various modifications different from the embodiments described herein. However, in the following description of the present disclosure, if it is determined that a detailed description of a related well-known function or component may unnecessarily obscure the gist of the present disclosure, the detailed description and specific illustration thereof will be omitted. In addition, the accompanying drawings are not drawn to scale in order to help understanding of the disclosure, but dimensions of some components may be exaggerated.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms may be used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

Unless otherwise defined, terms used in the embodiments of the present disclosure may be interpreted as meanings commonly known to those of ordinary skill in the art.

In addition, terms such as 'tip', 'rear end', 'upper', 'lower', 'top', and 'bottom' used in the present disclosure are defined based on the drawings, and the shape of each component and Location is not limited.

Hereinafter, a sensing device for a dryer according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a sensing device for a dryer according to an embodiment of the present disclosure. 2 is an exploded perspective view of a sensing device for a dryer according to an embodiment of the present disclosure; 3 is an exploded perspective view of a damper separated from the sensing device for a dryer according to an embodiment of the present disclosure;

1 to 3 , the sensing device 1 for a dryer according to an embodiment of the present disclosure includes an energy harvester 10 , a sensing circuit unit 20 , a case 30 , and a damper 50 . can

The energy harvester 10 is formed to convert the movement of the sensing device 1 for a dryer into electricity. In other words, the energy harvester 10 may generate electric power by using the movement of the sensing device 1 for the dryer.

For example, if the dryer 100 is operated while the sensing device 1 for the dryer is placed in the drum 120 of the dryer 100 (refer to FIG. 20 ), the drum 120 is rotated. When the drum 120 rotates, the sensing device 1 for the dryer inserted into the drum 120 performs a free fall motion. That is, according to the rotation of the drum 120, the sensing device 1 for the dryer falls down from the upper part of the inner space of the drum. Then, the energy harvester 10 may convert the movement of the sensing device 1 for the dryer, ie, free-fall motion, into electricity. In other words, it can be said that the energy harvester 10 of the sensing device 1 for the dryer converts the rotational motion of the drum 120 into electricity.

To this end, the energy harvester 10 is formed to generate electric power using the permanent magnet 11 and the coil 12 .

4 is a cross-sectional view of the sensing device for the dryer of FIG. 1 taken along line I-I.

Referring to FIG. 4 , the energy harvester 10 may include a cylinder 13 , a coil 12 , and a permanent magnet 11 .

The cylinder 13 is formed as a hollow cylinder and may be fixed to the inside of the case 30 . Both ends of the cylinder 13 are closed with a cap 14 .

The coil 12 is provided around the cylinder 13 . That is, the coil 12 is installed in the central portion of the cylinder 13 and is provided to surround the outer circumferential surface of the cylinder 13 .

The permanent magnet 11 is inserted into the cylinder 13 and is provided to be movable along the cylinder 13 inside the cylinder 13 . That is, the permanent magnet 11 is formed in a cylindrical shape having an outer diameter smaller than the inner diameter of the cylinder 13 . When the permanent magnet 11 slides along the cylinder 13 inside the cylinder 13 , electric power is generated in the coil 12 .

The coil 12 is electrically connected to the power supply 25 . The power supply unit 25 is configured to store power generated by the energy harvester 10 , and supply the stored power to the humidity sensor 21 and the wireless communication unit 23 . The power supply unit 25 may include a power conversion unit that converts the stored power into a form required by the humidity sensor 21 and the wireless communication unit 23 .

On the other hand, since the power production of the coil 12 is maximized when the permanent magnet 11 is completely deviating from the coil 12 , the length of the cylinder 13 in which the permanent magnet 11 moves is the length of the cylinder 13 wound around the cylinder 13 . It may be made to be three times or more of the width of the coil 11 . Accordingly, when the permanent magnet 11 is on the left side of the cylinder 13 , the right end of the permanent magnet 11 is spaced apart from the coil 12 . In addition, when the permanent magnet 11 is on the right side of the cylinder 13 , the left end of the permanent magnet 11 is spaced apart from the coil 12 .

When the energy harvester 10 is formed in the structure shown in FIG. 4 , when the sensing device 1 for the dryer inputted to the drum 120 moves by the drum 120 , the energy harvester 10 may generate electric power. . That is, the energy harvester 10 of the sensing device 1 for the dryer may convert the rotation of the drum 120 of the dryer 100 into electric power.

The sensing circuit unit 20 may be configured to measure the state of the outside air using the power generated by the energy harvester 10 and transmit the measurement data to the outside. For example, when the sensing device 1 for the dryer is put into the drum 120 of the dryer 100 , the sensing circuit unit 20 may be formed to measure the humidity of the air inside the drum 120 . .

Specifically, the sensing circuit unit 20 includes a humidity sensor 21 capable of measuring the humidity of the air, a wireless communication unit 23 that transmits humidity data measured by the humidity sensor 21 to the outside, and a humidity sensor 21 . and a power supply unit 25 for supplying power to the wireless communication unit 23 .

The humidity sensor 21 is formed to measure the humidity of the air. The humidity sensor 21 is installed in the case 30 to measure the humidity by contacting the external air passing through the air passage 40 provided in the case 30 . To this end, the humidity sensor 21 may be installed in the air passage 40 through which external air passes.

In the present embodiment, the sensing circuit unit 20 includes the humidity sensor 21 for measuring the humidity of the outside air, but as another example, when it is necessary to measure the temperature with the sensing device 1 for a dryer, the sensing circuit unit 20 may include a temperature sensor.

The wireless communication unit 23 is configured to receive a signal output from the humidity sensor 21 , that is, humidity data of external air and wirelessly transmit it to the outside of the sensing device 1 for the dryer. Therefore, when the sensing device 1 for the dryer is put into the drum 120 of the dryer 100, the humidity inside the drum 120 is measured by the humidity sensor 21, and the dryer ( 100) may be transmitted to the outside of the processor 150 or the dryer 100. The wireless communication unit 23 may be implemented as a communication module configured to wirelessly transmit data sensed by the humidity sensor 21 to the outside.

The wireless communication unit 23 may be formed to satisfy various communication standards. For example, the wireless communication unit 23 may be implemented with Bluetooth. As another example, the wireless communication unit 23 may be formed to implement a communication standard such as Wi-Fi, Zig bee, Z-wave, or the like.

The humidity sensor 21 , the wireless communication unit 23 , and the power supply unit 25 may be installed on the circuit board 27 . The circuit board 27 may be supported by the case 30 . For example, the circuit board may be fixed so as not to move inside the case 30 . The circuit board 27 may be implemented as a printed circuit board.

As shown in FIG. 2 , the energy harvester 10 may be installed on the upper side of the circuit board 27 . Accordingly, the coil 12 wound around the outer circumferential surface of the cylinder 13 of the energy harvester 10 is electrically connected to the power supply unit 25 provided on the circuit board 27 . Accordingly, the power generated by the energy harvester 10 may be stored in the power supply 25 .

The case 30 may be formed to surround and support the energy harvester 10 and the sensing circuit unit 20 . The case 30 is formed in a substantially spherical or spherical shape, and the energy harvester 10 and the sensing circuit unit 20 are installed inside the case 30 .

A space is provided inside the case 30 , and a circuit board 27 is disposed in the inner space of the case 30 . The humidity sensor 21 installed on the circuit board 27 is disposed to be isolated from the inner space of the case 30 . That is, the humidity sensor 21 is disposed in the air passage 40 isolated from the inner space of the case 30 .

The case 30 has rigidity to protect the energy harvester 10 and the sensing circuit unit 20 installed therein, and may be formed of a material such as plastic, which is light in weight. For example, the case 30 may be formed of polypropylene (PP).

5 and 6 , the case 30 may include an air flow path 40 through which external air passes. Accordingly, the air outside the case 30 may be guided to the humidity sensor 21 of the sensing circuit unit 20 through the air passage 40 .

5 is a cross-sectional view taken along the line II-II of the sensing device for the dryer of FIG. 1 . 6 is a perspective view illustrating a case of a sensing device for a dryer according to an embodiment of the present disclosure.

5 and 6 , the air flow path 40 of the case 30 may be formed in a structure that allows external air to flow in a U-shape.

Specifically, the air passage 40 may include an inlet 41 , an outlet 42 , and an inner duct 43 . The inlet 41 is formed on the outer surface of the case 30 , and external air is introduced into the inner duct 43 through the inlet 41 . The outlet 42 is formed to be spaced apart from the inlet 41 by a predetermined distance on the outer surface of the case 30 , and the air of the inner duct 43 is discharged to the outside through the outlet 42 . The inlet 41 and the outlet 42 may be formed in a straight line on the outer surface of the case 30 .

The inner duct 43 connects the inlet 41 and the outlet 42 , and blocks external air from flowing into the inner space of the case 30 . The upper end of the inner duct 43 adjacent to the inlet 41 is blocked, and the lower end of the inner duct 43 adjacent to the outlet 42 is positioned with a humidity sensor 21 installed on the circuit board 27 .

Accordingly, the external air introduced through the inlet 41 moves downward along the inner duct 43 to contact the humidity sensor 21 , and then is discharged to the outside of the case 30 through the outlet 42 . Accordingly, the outside air moves along a U-shaped path by the air flow passage 40 .

A filter 44 that blocks water and passes outside air may be installed at the inlet 41 and the outlet 42 of the air flow path 40 . The filter 44 is formed to pass air containing moisture and prevent foreign substances such as water or fluff from entering the inner duct 43 . The filter 44 may be formed of a mesh. Alternatively, the filter 44 may be formed using a Gore-Tex fabric that passes air and blocks water, polytetrafluoroethylene (PTFE), or the like.

In order to install the energy harvester 10 and the sensing circuit unit 20 therein, the case 30 may include a lower case 32 and an upper case 31 . The lower case 32 and the upper case 31 are coupled to each other so as not to be separated. For example, the upper case 31 may be coupled to the lower case 32 with an adhesive.

7 is a perspective view illustrating a state in which the upper case is removed from the case of FIG. 6 , and FIG. 8 is a bottom perspective view of the upper case of the case of FIG. 6 .

2 and 7 , the lower case 32 has a substantially hemispherical shape, and a flat portion 32a may be provided at the lower end thereof. A seating part 33 in which the circuit board 27 of the sensing circuit part 20 is installed is provided on the inner bottom surface of the lower case 32 .

A pair of cylinder support parts 34 for supporting the cylinder 13 of the energy harvester 10 are provided at both ends of the seating part 33 . The upper end of the cylinder support portion 34 is formed with a curved groove (34a) corresponding to the outer peripheral surface of the cylinder (13). In addition, a pair of fixing walls 35 for fixing the circuit board 27 are provided on the left and right sides of the seating portion 33 to face each other. Accordingly, when the circuit board 27 is placed in the seating portion 33 , the four side surfaces of the circuit board 27 are fixed by the pair of cylinder support portions 34 and the pair of fixing walls 35 .

An outlet 42 is provided on the outer peripheral surface of the lower case 32 . The outlet 42 is formed so that when the circuit board 27 is installed in the seating portion 33 , the humidity sensor 21 provided on the circuit board 27 is adjacent to the outlet 42 .

Referring to FIG. 8 , the upper case 31 is formed in a substantially hemispherical shape corresponding to the lower case 32 , and when combined with the lower case 32 , has a substantially ball or spherical shape. A flat part 31a may be provided at an upper end of the upper case 31 .

A pair of cylinder fixing parts 36 for fixing the cylinder 13 of the energy harvester 10 are provided on the inner upper surface of the upper case 31 . The pair of cylinder fixing parts 36 are spaced apart from each other by a predetermined distance, and are formed to protrude downward from the upper surface of the upper case 31 . A curved groove 36a corresponding to the outer peripheral surface of the cylinder 13 is formed at the lower end of the pair of cylinder fixing parts 36 .

Accordingly, when the circuit board 27 and the energy harvester 10 are installed in the lower case 32 and the upper case 31 is combined, the energy harvester 10 is a pair of cylinder fixing parts of the upper case 31 . The circuit board 27 is fixed by the pair of cylinder supports 34 of the

lower case

32 and 36 and the pair of cylinder supports 34 of the lower case 32 and the pair of fixing walls ( 35) is fixed by Accordingly, even when the sensing device 1 for the dryer moves, the circuit board 27 and the energy harvester 10 installed inside the case 30 can maintain a fixed state.

In addition, the upper case 31 is provided with an inlet 41 and an inner duct 43 . The inlet 41 is provided to communicate with the inner duct 43 . The inner duct 43 is formed in an angle bar shape to protrude downward from the upper surface of the upper case 31 . The inner duct 43 is formed to protrude from the lower end of the upper case 31 and extend to the inside of the lower case 32 .

When the upper case 31 is coupled to the lower case 32 , the lower end of the inner duct 43 comes into contact with the upper surface of the circuit board 27 installed on the lower surface of the lower case 32 . Then, the humidity sensor 21 installed on the circuit board 27 is positioned in the inner duct 43 . Accordingly, the air introduced into the inlet 41 moves along the inner duct 43 to contact the humidity sensor 21 , and then is discharged to the outside of the case 30 through the outlet 42 .

On the outer peripheral surface of the lower end of the upper case 31, the upper coupling end 37 is formed to protrude. The upper coupling end 37 may be formed along the entire circumference of the outer peripheral surface of the lower end of the upper case 31 .

In addition, a lower coupling end 38 coupled to the upper coupling end 37 of the upper case 31 is formed on the outer peripheral surface of the upper end of the lower case 32 . The lower coupling end 38 may be formed in a step along the entire circumference of the outer peripheral surface of the upper end of the lower case 32 . Accordingly, when the upper case 31 and the lower case 32 are coupled, the upper coupling end 37 of the upper case 31 is inserted into the lower coupling end 38 of the lower case 32 , the upper case 31 and the lower case 32 may be firmly coupled.

At least one coupling groove on the outer surface of the case 30 for coupling the case 30 to the damper 50 and determining the direction of the inlet 41 and the outlet 42 of the case 30 with respect to the damper 50 . (49a, 49b, 49c) may be formed. The case 30 according to the embodiment shown in FIGS. 6 and 9 includes three

coupling grooves

49a, 49b, and 49c.

6 and 9 , three

coupling grooves

49a , 49b , 49c are formed at regular intervals along the outer periphery of the central portion of the case 30 . Specifically, the three

coupling grooves

49a , 49b , 49c are formed along the outer peripheral surface of the case 30 between the upper surface 31a of the upper case 31 and the lower surface 32a of the lower case 32 . The first coupling groove 49a is formed in a cross section of an arc shape, the second coupling groove 49b is formed in a cross section of a right-angled triangle shape, and the third coupling groove 49c is formed in a cross section of a substantially rectangular shape.

Half of the three

coupling grooves

49a, 49b, 49c are formed in the upper case 31 and the lower case 32, respectively. Accordingly, when the upper case 31 and the lower case 32 are coupled, the three

coupling grooves

49a, 49b, and 49c are completed.

The damper 50 is installed to surround at least a portion of the case 30 on the outside of the case 30 , and is formed to protect the case 30 from external impact. That is, the damper 50 is formed to buffer the shock applied from the outside of the damper 50 . The damper 50 may buffer an impact applied from all directions around the damper 50 . The damper 50 is closely attached to the outer surface of the case 30 and is formed to fix the case 30 .

1 and 5 , the damper 50 may include a first damper 51 and a second damper 52 .

The first damper 51 is installed perpendicularly to the case 30 , and is formed to cushion an impact applied to the case 30 in a vertical direction. To this end, the first damper 51 forms a first air chamber 53 in the upper and lower portions of the case 30 . The first damper 51 is formed in a substantially hollow cylindrical or barrel shape with both ends blocked. The case 30 is located in the center of the first damper 51 . Here, the barrel shape refers to a barrel shape in which the diameter of both ends is smaller than the diameter of the center, such as a wine barrel.

For example, the first damper 51 includes a first upper damper 51a extending vertically from an upper portion of the case 30 and a first lower damper 51b extending vertically from a lower portion of the case 30 . can do. The first upper damper 51a forms a first upper air chamber 53a on the upper side of the case 30 , and the first lower damper 51b has a first lower air chamber 53b on the lower side of the case 30 . to form The first upper air chamber 53a and the first lower air chamber 53b form a first air chamber 53 supporting the case 30 from above and below.

Support ribs

54 and 55 formed to support the upper and lower surfaces of the case 30 are provided on inner surfaces of the upper and lower ends of the first damper 51 . For example, the upper support rib 54 of the first upper damper 51a is formed in a cylindrical shape and is formed to support the flat portion 31a of the upper end of the case 30 . The lower support rib 55 of the first lower damper 51b has a cylindrical shape and is formed to support the flat portion 32a of the lower end of the case 30 .

The second damper 52 is installed to surround the outer periphery of the case 30 , and is formed to cushion an impact applied to the case 30 in a horizontal direction. Since the case 30 is located inside the first damper 51 , the second damper 52 is installed to surround the central portion of the first damper 51 in the longitudinal direction. To this end, the second damper 52 forms a second air chamber 56 to surround the case 30 over the entire outer circumference of the case 30 . The second damper 52 is formed in a substantially hollow donut shape surrounding the first damper 51 . The inner peripheral surface 57 of the second damper 52 may be formed to be in close contact with the outer peripheral surface of the first damper 51 .

A plurality of ribs 58 arranged to surround the periphery of the case 30 are provided inside the second damper 52 to buffer external impact. A plurality of ribs 58 are formed in the second air chamber 56 of the second damper 52 . The plurality of ribs 58 may be formed in various shapes as long as they can buffer external impact. For example, the plurality of ribs 58 may be formed in a shape having a cross section of any one of an X-shape, an O-shape, a semicircle shape, and a straight-line shape.

The combined first damper 51 and the second damper 52 are formed such that an outer circumferential surface has a substantially spherical or spherical shape. To this end, both upper and lower ends of the first damper 51 are formed as spherical surfaces protruding to the outside, and the outer peripheral surface 59 of the second damper 52 has a curvature similar to the curved surfaces of the upper and lower ends of the first damper 51 . It is formed as a curved surface with

The second damper 52 may be integrally formed with the first damper 51 . For example, the first damper 51 and the second damper 52 may be integrally formed using an elastic material. The first damper 51 and the second damper 52 may be formed of a flexible and elastic material. For example, the damper 50 , that is, the first damper 51 and the second damper 52 may be formed of rubber, a thermoplastic elastomer (TPE), or the like.

In addition, the second damper 52 may include at least one air channel 60 communicating with the inlet 41 and the outlet 42 of the case 30 . In the case of the embodiment shown in FIG. 1 , one air channel 60 is provided in the second damper 52 . Accordingly, the inlet 41 and the outlet 42 of the case 30 communicate with the outside through the air channel 60 of the second damper 52 .

The lower portion of the air channel 60 is provided with two through-

holes

67 and 68 corresponding to the inlet 41 and the outlet 42 of the case 30 . The through hole 67 of the damper 50 corresponding to the inlet 41 of the case 30 functions as an inlet through which external air flows into the inside of the damper 50 , and the outlet 42 of the case 30 . ), the through hole 68 of the damper 50 functions as an outlet through which the air inside the damper 50, ie, the air discharged from the case 30, is discharged to the outside.

Although not shown, when two inlets and outlets are formed in the case 30 , two air channels are formed in the second damper 52 to correspond to the two inlets and outlets of the case 30 .

The damper 50 may be formed of an upper damper 61 and a lower damper 62 for convenience of manufacture. The upper damper 61 and the lower damper 62 may be formed in a symmetrical shape with respect to an imaginary plane that cuts the center of the damper 50 .

2, 3, and 10 , the upper damper 61 may include a first upper damper 51a and a second upper damper 52a.

The first upper damper 51a has a substantially truncated cone shape, and an upper end of the first upper damper 51a has a spherical shape. The second upper damper 52a is formed to surround the periphery of the lower end of the first upper damper 51a. The second upper damper 52a is formed in a ring shape having a substantially U-shaped cross section. The upper surface of the first upper damper 51a and the outer peripheral surface of the second upper damper 52a are formed to have a substantially hemispherical shape. Accordingly, the upper end of the second upper damper 52a is located at a lower position than the upper end of the first upper damper 51a.

The lower end of the first upper damper 51a and the lower end of the second upper damper 52a are formed to be positioned on the same plane. In addition, the lower end of the first upper damper 51a is connected to the inner peripheral surface of the second upper damper 52a. Accordingly, a groove 63 is formed between the first upper damper 51a and the second upper damper 52a along the entire circumference of the first upper damper 51a.

Referring to FIG. 10 , an upper support rib 54 is provided inside the first upper damper 51a of the upper damper 61 , that is, in the first upper air chamber 53a. The upper support rib 54 extends downward from the upper surface of the first upper damper 51a to support the upper end of the case 30 . Accordingly, the lower end of the upper support rib 54 is formed to contact the upper end of the case 30 . A pair of sub support ribs 54a are provided on both sides of the upper support rib 54 of the first upper damper 51a. The pair of sub support ribs 54a are formed to support the case 30 by contacting the upper end of the case 30 .

A through hole 67 is formed in a side surface of the first upper damper 51a. The through hole 67 is formed at a position corresponding to the inlet 41 of the case 30 . Therefore, when the upper case 30 is inserted into the first upper damper 51a, the through hole 67 of the first upper damper 51a and the inlet 41 of the case 30 coincide with each other to allow outside air to enter the case ( 30) may be introduced into the air passage 40. That is, the through hole 67 of the first upper damper 51a serves as an inlet through which external air flows into the damper 50 .

In addition, at least one

coupling protrusion

69a, 69b, 69c is provided on the inner surface of the lower end of the first upper damper 51a. At least one

coupling protrusion

69a, 69b, 69c is for fixing the case 30 and the damper 50, and can be coupled to at least one

coupling groove

49a, 49b, 49c provided in the case 30. formed to be

In the case of this embodiment, three engaging projections (69a, 69b, 69c) are provided to correspond to the three engaging grooves (49a, 49b, 49c) provided in the case (30). The first coupling protrusion 69a of the first upper damper 51a is formed as a protrusion having an arc-shaped cross section corresponding to the first coupling groove 49a of the case 30 . The second coupling protrusion 69b is formed as a protrusion having a cross section of a right-angled triangular shape corresponding to the second coupling groove 49b of the case 30 , and the third coupling protrusion 69c is the third of the case 30 . It is formed as a projection having a cross section of a substantially rectangular shape corresponding to the engaging groove 49c.

An upper air channel 60a is formed in the second upper damper 52a at a position corresponding to the through hole 67 of the first upper damper 51a. Accordingly, the through hole 67 of the first upper damper 51a may be exposed to the outside through the upper air channel 60a.

In addition, a plurality of ribs 58 are provided in the inner space of the second upper damper 52a, that is, the second upper air chamber 56a. The plurality of ribs 58 are formed at regular intervals along the inner surface of the outer circumferential surface 59 of the second upper damper 52a to buffer the impact applied to the second upper damper 52a.

The plurality of ribs 58 are formed in a hollow cylindrical shape, and the cylinder is in contact with the inner surface of the outer circumferential surface 59 of the second upper damper 52a but not in contact with the inner circumferential surface 57 of the second upper damper 52a. will be prepared That is, a certain distance exists between the plurality of cylinders 58 and the inner peripheral surface 57 of the second upper damper 52a. Accordingly, when an impact is applied in the lateral direction of the second upper damper 52a, the outer peripheral surface 59 and the plurality of ribs 58 of the second upper damper 52a are deformed to absorb the impact.

In addition, the upper coupling end 65 is formed to protrude from the outer peripheral surface of the second upper damper 52a. The upper coupling end 65 may be formed along the entire circumference of the outer peripheral surface of the second upper damper 52a.

The lower damper 62 is formed symmetrically with the upper damper 61, and when the upper damper 61 and the lower damper 62 are combined, the upper damper 61 and the lower damper 62 form a substantially spherical shape. . Accordingly, the lower damper 62 has substantially the same structure as the upper damper 61 .

2 and 3 , the lower damper 62 may include a first lower damper 51b and a second lower damper 52b.

The first lower damper 51b has a substantially truncated cone shape, and a lower end of the first lower damper 51b has a spherical shape. The second lower damper 52b is formed to surround an upper end of the first lower damper 51b. The second lower damper 52b is formed in a ring shape having a substantially U-shaped cross section. The lower surface of the first lower damper 51b and the outer peripheral surface of the second lower damper 52b are formed to have a substantially hemispherical shape. Accordingly, the lower end of the second lower damper 52b is positioned higher than the lower end of the first lower damper 51b.

The upper end of the first lower damper 51b and the upper end of the second lower damper 52b are formed to be positioned on the same plane. The upper ends of the first lower damper 51b and the second lower damper 52b are formed to be the same as the lower ends of the first upper damper 51a and the second upper damper 52a. Accordingly, the upper ends of the first lower damper 51b and the second lower damper 52b and the lower ends of the first upper damper 51a and the second upper damper 52a may be bonded to each other with an adhesive. That is, the upper damper 61 and the lower damper 62 may be combined with an adhesive to form the damper 50 having a substantially spherical shape.

The combined first upper damper 51a and the first lower damper 51b may form the above-described first damper 51, and the combined second upper damper 52a and the second lower damper 52b The above-described second damper 52 may be formed.

In addition, the upper end of the first lower damper 51b is connected to the inner peripheral surface 77 of the second lower damper 52b. Accordingly, a groove is formed between the first lower damper 51b and the second lower damper 52b along the entire circumference of the first lower damper 51b.

2 and 3 , a lower support rib 55 is provided on a lower surface of the first lower damper 51b of the lower damper 62 . The lower support rib 55 is formed to support the lower end of the case 30 . Accordingly, the upper end of the lower support rib 55 is formed to contact the lower surface of the case 30 . A pair of sub support ribs 55a are provided on both sides of the lower support ribs 55 of the first lower damper 51b. The pair of sub support ribs 55a are formed to support the case 30 by contacting the lower surface of the case 30 .

A through hole 68 is formed in a side surface of the first lower damper 51b. The through hole 68 is formed at a position corresponding to the outlet 42 of the case 30 . Therefore, when the lower case 32 is inserted into the first lower damper 51b, the through hole 68 of the first lower damper 51b and the outlet 42 of the case 30 coincide with the case 30. Air of the air passage 40 may be discharged to the outside. That is, the through hole 68 of the first lower damper 51b serves as an outlet through which the air inside the damper 50 is discharged.

In addition, at least one

coupling protrusion

69a, 69b, 69c is provided on the inner surface of the upper end of the first lower damper 51b. At least one

coupling protrusion

69a, 69b, 69c is for fixing the case 30 to the damper 50, and may be coupled to at least one

coupling groove

49a, 49b, 49c provided in the case 30. formed to be

In the case of this embodiment, three engaging projections (69a, 69b, 69c) are provided to correspond to the three engaging grooves (49a, 49b, 49c) provided in the case (30). The first coupling protrusion 69a of the first lower damper 51b is formed as a protrusion having an arc-shaped cross section corresponding to the first coupling groove 49a of the case 30 . The second coupling protrusion 69b is formed as a protrusion having a cross section of a right-angled triangular shape corresponding to the second coupling groove 49b of the case 30 , and the third coupling protrusion 69c is the third of the case 30 . It is formed as a projection having a cross section of a substantially rectangular shape corresponding to the engaging groove 49c.

Referring to FIG. 11 , the case 30 is coupled to the lower damper 62 . At this time, the first coupling protrusion 69a, the second coupling protrusion 69b, and the third coupling protrusion 69c of the lower damper 30 are the first coupling groove 49a of the case 30, the second coupling protrusion, respectively. It is inserted into the groove 49b and the third engagement groove 49c. Accordingly, the case 30 coupled to the lower damper 62 does not flow with respect to the lower damper 62 . In addition, since the three

coupling protrusions

69a, 69b, 69c and the three

coupling grooves

49a, 49b, 49c are all formed differently in shape, when the case 30 is inserted into the lower damper 62, the case ( The outlet 42 of 30 , coincides with the air channel 60 of the lower damper 62 . Accordingly, it is possible to prevent erroneous assembly of the case 30 and the lower damper 62 .

Similarly, when coupling the upper damper to the case coupled to the lower damper as shown in FIG. 11, the three

coupling protrusions

69a, 69b, 69c of the upper damper are inserted into the three

coupling grooves

49a, 49b, 49c of the case. Therefore, the inlet 41 of the case 30 coincides with the air channel 60 of the upper damper 61 . Accordingly, it is possible to prevent erroneous assembly of the case 30 and the upper damper 61 .

A lower air channel 60b is formed in the second lower damper 52b at a position corresponding to the through hole 68 of the first lower damper 51b. Accordingly, the through hole 68 of the first lower damper 51b may be exposed to the outside through the lower air channel 60b. The lower air channel 60b forms an air channel 60 for guiding external air to the air passage 40 of the case 30 together with the upper air channel 60a.

In addition, a plurality of ribs 58 are provided in the inner space of the second lower damper 52b, that is, the second lower air chamber 53b. The plurality of ribs 58 are formed at regular intervals along the inner surface of the outer circumferential surface 79 of the second lower damper 52b to buffer the impact applied to the second lower damper 52b.

The plurality of ribs 58 are formed in a hollow cylindrical shape, and the plurality of cylinders 58 are in contact with the inner surface of the outer circumferential surface 79 of the second lower damper 52b, but the inner circumferential surface 77 of the second lower damper 52b. ) to avoid contact with That is, a certain distance exists between the plurality of cylinders 58 and the inner peripheral surface 77 of the second lower damper 52b. Accordingly, when an impact is applied in the lateral direction of the second lower damper 52b, the outer peripheral surface 79 and the plurality of ribs 58 of the second lower damper 52b are deformed to absorb the impact.

In addition, a lower coupling end 75 coupled to the upper coupling end 65 of the second upper damper 52a is formed on the outer peripheral surface 79 of the second lower damper 52b. The lower coupling end 75 may be formed with a step difference along the entire circumference of the outer peripheral surface of the second upper damper 52a. Therefore, when the upper damper 61 and the lower damper 62 are coupled, the upper coupling end 65 of the second upper damper 52a of the upper damper 61 is the second lower damper ( When it is inserted into the lower coupling end 75 of 52b), the upper damper 61 and the lower damper 62 can be firmly coupled.

In the above description, the case in which the plurality of ribs 58 formed inside the second upper damper 52a and the second lower damper 52b are formed in a cylindrical shape has been described, but the shape of the plurality of ribs 58 is not limited thereto. no. The plurality of ribs 58 may be formed in various shapes as long as they can absorb external shock.

Hereinafter, various shapes of the plurality of ribs will be described with reference to FIGS. 12 to 17 .

12 to 17 are plan views illustrating various examples of a plurality of ribs of a damper of a sensing device for a dryer according to an embodiment of the present disclosure. For reference, FIGS. 12 to 17 illustrate a plurality of ribs formed in the second lower damper 52b of the lower damper 62 .

Referring to FIG. 12 , the plurality of ribs 81 are formed in an X-shape, and are provided at regular intervals along the outer peripheral surface 79 of the second lower damper 52b. Specifically, one end of the X-shaped rib 81 is fixed to the inner surface of the outer peripheral surface 79 of the second lower damper 52b, and the other end of the X-shaped rib 81 is the inner peripheral surface of the second lower damper 52b. It is fixed to the inner surface of (77).

Referring to FIG. 13 , the plurality of ribs 82 are formed in a triangular shape and are provided at regular intervals along the outer peripheral surface 79 of the second lower damper 52b. Specifically, both ends of the triangular-shaped rib 82 are fixed to the inner surface of the outer peripheral surface 79 of the second lower damper 52b, and the vertex of the triangular rib 82 is the inner peripheral surface 77 of the second lower damper 52b. ) is formed so as not to contact the inner surface of The vertex of the triangular rib 82 may be spaced apart from the inner surface of the inner peripheral surface 77 of the second lower damper 52b by a predetermined distance.

Referring to FIG. 14 , the plurality of ribs 83 are formed as protrusions having a rectangular cross section, and are provided at regular intervals along the outer circumferential surface 79 of the second lower damper 52b. Specifically, the rib 84 having a rectangular cross section is formed to protrude from the inner surface of the outer circumferential surface 79 of the second lower damper 52b, and the other end of the rectangular rib 84 is formed to protrude from the inner circumferential surface 77 of the second lower damper 52b. ) is spaced apart from the inner surface of the

Referring to FIG. 15 , the plurality of ribs 84 includes a plurality of first ribs 84a formed on the inner surface of the outer circumferential surface 79 of the second lower damper 52b and the inner circumferential surface 77 of the second lower damper 52b. ) includes a plurality of second ribs (84b) formed on the inner surface. The plurality of first ribs 84a are formed as protrusions having a rectangular cross section, and are provided at regular intervals along the outer circumferential surface 79 of the second lower damper 52b. The plurality of second ribs 84b are formed as protrusions having a rectangular cross section, and are provided at regular intervals along the inner circumferential surface 77 of the second lower damper 52b.

Specifically, the plurality of first ribs 84a protrude from the inner surface of the outer peripheral surface 79 of the second lower damper 52b toward the inner peripheral surface 77 of the second lower damper 52b. The plurality of second ribs 84b protrude from the inner surface of the inner peripheral surface 77 of the second lower damper 52b toward the outer peripheral surface 79 of the second lower damper 52b. One end of the plurality of second ribs 84b is connected to each other by a circular rib 84c. One end of the plurality of first ribs 84a is formed so as not to contact the circular ribs 84c connecting the plurality of second ribs 84b. That is, one end of the plurality of first ribs 84a is spaced apart from the circular ribs 84c by a predetermined distance.

Referring to FIG. 16 , the plurality of ribs 85 includes a plurality of first ribs 85a formed on the inner surface of the outer circumferential surface 79 of the second lower damper 52b and the inner circumferential surface 77 of the second lower damper 52b. ) includes a plurality of second ribs (85b) formed on the inner surface. The plurality of first ribs 85a are formed as protrusions having a rectangular cross section, and are provided at regular intervals along the outer circumferential surface 79 of the second lower damper 52b. The plurality of second ribs 85b are formed as protrusions having a rectangular cross section, and are provided at regular intervals along the inner circumferential surface 77 of the second lower damper 52b.

Specifically, the plurality of first ribs 85a protrude from the inner surface of the outer peripheral surface 79 of the second lower damper 52b toward the inner peripheral surface 77 of the second lower damper 52b. One end of the plurality of first ribs 85a is connected to each other by circular ribs 85c. The plurality of second ribs 85b protrude from the inner surface of the inner peripheral surface 77 of the second lower damper 52b toward the outer peripheral surface 79 of the second lower damper 52b. One end of the plurality of second ribs 85b is formed so as not to contact the circular ribs 85c connecting the plurality of first ribs 85a. That is, one end of the plurality of second ribs 85b is spaced apart from the circular rib 85c by a predetermined distance.

Referring to FIG. 17 , the plurality of ribs 86 are formed of a hollow cylinder 86a and an intermediate plate 86b partitioning the inside of the cylinder 86a. The plurality of ribs 86 are formed to be spaced apart from each other at regular intervals along the inner surface of the outer circumferential surface of the second lower damper. Each of the plurality of cylinders 86a is provided in contact with the inner surface of the outer peripheral surface 79 of the second lower damper 52b but not in contact with the inner peripheral surface 77 of the second lower damper 52b. That is, a certain distance exists between the plurality of cylinders 86a and the inner circumferential surface 77 of the second lower damper 52b. The intermediate plate 86b is formed perpendicular to the outer peripheral surface 79 of the second lower damper 52b.

In the above description, the case in which the air flow path 40 of the case 30 has a structure that allows external air to flow in a U-shape has been described, but the shape of the air flow path 40 is not limited thereto. As another example, the air flow path may be formed in a straight line shape. That is, an air flow path may be formed so that external air flows in a straight line through the inside of the case 30 .

Hereinafter, a case in which the air flow path of the case has a straight shape will be described in detail with reference to FIGS. 18 and 19 .

18 is a front view illustrating another example of a case of a sensing device for a dryer according to an embodiment of the present disclosure. 19 is a plan view illustrating a sensing device for a dryer according to an embodiment of the present disclosure including the case of FIG. 18 .

Referring to FIG. 18 , the case 30 ′ includes an air flow path 40 ′ having a straight line shape. The air flow path 40' includes an inlet 41' through which external air is introduced, an outlet 42' through which air is discharged, and an inner duct 43' connecting the inlet 41' and the outlet 42'. may include

The inlet 41' is formed on the outer peripheral surface of the case 30', and the outlet 42' is formed on the opposite side of the outer peripheral surface of the case 30' facing the inlet 41'. The inner duct 43' connects the inlet 41' and the outlet 42', and is formed so that air does not flow into the inside of the case 30'. A humidity sensor 21 may be installed in the inner duct 43 ′.

The case 30' is installed inside the damper 50'. The damper 50' may include an inlet opening 87 and an outlet opening 88 corresponding to the inlet 41' and the outlet 42' of the case 30'.

Referring to FIG. 19 , the case 30 ′ is fixed to the inside of the damper 50 ′. At this time, the inlet 41' of the case 30' faces the inlet opening 87 of the damper 50', and the outlet 42' of the case 30' is the outlet opening ( 88), the case 30' is installed on the damper 50'.

Then, the outside air is introduced into the inlet 41' of the case 30' through the inlet opening 87 of the damper 50'. External air introduced into the inlet 41' of the case 30' passes through the inner duct 43' and comes into contact with the humidity sensor 21, and then is discharged to the outlet 42' of the case 30'. . The air discharged through the outlet 42' of the case 30' is discharged to the outside of the damper 50' through the discharge opening 88 of the damper 50'.

Accordingly, the air flow path 40' of the sensing device 1' for the dryer shown in FIG. 19 allows external air to flow in a straight line and pass through the humidity sensor 21 of the case 30'.

Hereinafter, a dryer using a sensing device for a dryer according to an embodiment of the present disclosure having the above structure will be described with reference to FIGS. 20 and 21 .

20 is a diagram illustrating a dryer using a sensing device for a dryer according to an embodiment of the present disclosure. 21 is a functional block diagram of a sensing device for a dryer and a dryer according to an embodiment of the present disclosure.

20 and 21 , the dryer 100 according to an embodiment of the present disclosure may include a cabinet 110 and a drum 120 .

The cabinet 110 is provided with an inlet through which the object to be dried 101 can be put in and removed from the front side, and the inlet is opened and closed by the door 112 . The door 112 is hinged to open and close the inlet on the front of the cabinet 110 . The door 112 may be formed to be transparent so that the inside of the drying object 101 can be seen.

An operation panel 151 for controlling the dryer 100 is provided on the front upper portion of the cabinet 110 . The operation panel 151 may include a display 152 capable of displaying the state of the dryer 100 . The user may operate the dryer 100 by manipulating the operation panel 151 .

The drum 120 is rotatably installed inside the cabinet 110 , and one end of the drum 120 is installed to communicate with the inlet of the cabinet 110 . A plurality of lifts may be provided on the inner surface of the drum 120 to raise the building.

A driving unit 131 is installed at the rear end of the drum 120 . Accordingly, when the driving unit 131 operates, the drum 120 rotates.

An air circulation unit 135 formed to circulate air to the drum 120 is provided inside the cabinet 110 .

In addition, a heater 133 is provided inside the cabinet 110 to heat the air circulated by the air circulation unit 135 .

Accordingly, when the air circulation unit 135 operates, the air in the drum 120 is discharged, passes through the heater 133 , and then is supplied to the drum 120 again. That is, the medium-temperature/high-humidity air discharged from the drum 120 passes through the air circulation unit 135 and the heater 133 as high-temperature/low-humidity air and is supplied to the drum 120 again. The object to be dried 101 inside the drum 120 is dried by this air circulation.

The sensing device 1 for a dryer according to an embodiment of the present disclosure may be inserted into the drum 120 through an inlet of the dryer 100 . The humidity sensor 21 of the sensing device 1 for the dryer may measure the humidity inside the drum 120 .

In addition, when the drum 120 rotates, the sensing device 1 for the dryer put into the drum 120 performs a free fall motion, so the energy harvester 10 generates electricity, and the humidity sensor 21 and the wireless communication unit 23 ) can be supplied with electricity.

In addition, a dryer wireless communication unit 153 capable of wirelessly communicating with the dryer sensing device 1 is provided inside the cabinet 110 . The dryer wireless communication unit 153 is formed to correspond to the wireless communication unit 23 of the sensing device 1 for the dryer. For example, the dryer wireless communication unit 153 may be formed to implement any one communication standard such as Bluetooth, Wi-Fi, Zig bee, Z-wave, etc. .

A processor 150 for controlling the dryer 100 may be provided inside the cabinet 110 .

The processor 150 controls each component of the dryer 1 . Specifically, the processor 150 may operate the dryer by controlling the driving unit 131 , the heater 133 , the air circulation unit 135 , the operation panel 151 , and the like.

In addition, the processor 150 may receive the humidity information from the sensing device 1 for the dryer and display it on the display 152 of the operation panel 151 . Also, the processor 150 may control the dryer 100 according to the received humidity information. For example, the processor 150 controls the dryer wireless communication unit 153 to receive the humidity information in the drum 120 measured by the humidity sensor 21 through the wireless communication unit 23 of the sensing device 1 for the dryer. can do.

The processor 150 may include, for example, a processing circuit such as an electronic circuit board, and various electronic components and/or program modules such as an ASIC, ROM, and RAM. Since the processor 150 controls the dryer 100 to dry the object to be dried, it is the same as or similar to the processor of the dryer according to the related art, and thus a detailed description of the configuration of the processor 150 will be omitted.

The sensing device for a dryer according to an embodiment of the present disclosure as described above is put into the drum of the dryer to measure the humidity and wirelessly transmits the humidity data, so it is possible to accurately and conveniently measure the degree of drying of the object to be dried in the drum. There are advantages to being able to

In addition, since the sensing device for a dryer according to an embodiment of the present disclosure uses electricity generated by using an energy harvester, a separate power source such as a battery is not required, so it has the advantage that it can be applied to a high-temperature environment such as the inside of the dryer. have.

In addition, since the sensing device for a dryer according to an embodiment of the present disclosure has a damper on the outside of the case, it is possible to minimize the noise generated by the free fall of the sensing device for the dryer when it is put into the drum, and sensing for the dryer There is an advantage in that it is possible to prevent breakage of the device and to prevent damage such as crushing of the drum.

In the above, the present disclosure has been described in an exemplary manner. The terms used herein are for the purpose of description and should not be construed in a limiting sense. Various modifications and variations of the present disclosure are possible according to the above contents. Accordingly, unless otherwise stated, the present disclosure may be practiced freely within the scope of the claims.

Claims

an energy harvester that generates electrical power;

a humidity sensor for sensing humidity by receiving power generated by the energy harvester;

a circuit board on which the humidity sensor is mounted;

a case supporting the circuit board; and

A sensing device for a dryer, including; a damper that surrounds at least a portion of the case and protects the case from external impact.
The method of claim 1,

A sensing device for a dryer in which an inlet is provided in the case to allow external air to flow in.
The method of claim 1,

The case includes an upper case and a lower case,

The upper case is provided with an inlet so that external air can be introduced into the case, and the lower case is provided with an outlet so that the air inside the case can be discharged.
4. The method of claim 3,

A sensing device for a dryer in which a filter is provided to prevent water from flowing into the inlet or the outlet.
The method of claim 1,

The damper is

a first damper forming an air chamber in upper and lower portions of the case; and

A sensing device for a dryer, including; a second damper for forming an air chamber along the side of the case.
The method of claim 1,

The damper is provided with an inlet so that external air can be introduced into the damper and an outlet so that the air inside the damper can be discharged.
The method of claim 1,

The case is made of a rigid material,

The damper is an elastic material, a sensing device for a dryer.
The method of claim 1,

The energy harvester is

cylinder;

a coil wound around the cylinder; and

A sensing device for a dryer, including; a permanent magnet slidably inserted into the cylinder.
The method of claim 1,

a wireless communication unit for transmitting the data sensed by the humidity sensor to the outside; and

Further comprising; a power supply unit for storing power generated by the energy harvester and supplying power to the humidity sensor and the wireless communication unit;

The wireless communication unit and the power supply unit are mounted on the circuit board, a sensing device for a dryer.
humidity sensor;

a communication module for wirelessly transmitting the data sensed by the humidity sensor to the outside;

a circuit board on which the communication module is mounted;

a case supporting the circuit board; and

A damper that surrounds at least a portion of the case and protects the case from external impact; including, a sensing device.
11. The method of claim 10,

The case provides an internal space in which at least a portion of the circuit board is disposed,

The humidity sensor is isolated from the inner space of the case and disposed outside the case, sensing device.
11. The method of claim 10,

The damper is disposed so that air chambers are formed in upper and lower portions of the case, the sensing device.
11. The method of claim 10,

The damper is arranged to form an air chamber along the circumference of the case, the sensing device.
11. The method of claim 10,

The damper is provided with an inlet so that air can be introduced from the outside, the sensing device.
11. The method of claim 10,

Further comprising a power supply for supplying power to the communication module,

The power supply unit includes an energy harvester for generating power according to the movement of the magnet, sensing device.