KR20090081868A - Air washer with water level sensor - Google Patents

Abstract

A water level sensing type air washer is provided to prevent equipment from being broken down by preventing water from flowing in a control part connected to a water level sensor. A water level sensing type air washer comprises an upper case(20), a lower case(22), a water level sensor(50), a control part(30), and a contact point part(40). The lower case is connected to the bottom side of the upper case and stores water therein. The water level sensor is installed in the lower case to measure a level of the water. The control part is installed on the upper case and generates a control signal by receiving a measured value of the water level sensor. The contact point part is installed on a portion at which the upper and lower cases are contacted to electrically connect the control part and water level sensor. The contact point part includes an elastic contact point member(42) which has an elastically variable length and is selectively installed on the upper or lower case, and a fixed contact point member(44) which faces the elastic contact point member and is fixedly installed on the upper or lower case.

Description

Air washer with water level sensor

The present invention relates to a wet air purifier, and more particularly, when the upper case and the lower case are coupled, the water level sensor provided in the control unit and the lower case provided in the upper case by the electrical contact is made by the contact portion; The present invention relates to a level sensor-type wet air cleaner that prevents water from flowing into the controller in advance.

In general, an air purifier is a mechanism that discharges clean air after removing contaminants through a purification medium for air containing fine dust, various harmful gases, various germs, molds, viruses, and the like.

The air purifier as described above is equipped with a variety of functions, such as air odor removal function, removal of life odor, mites, pollen, small particles such as pet hair, disease caused by air infection.

The air cleaner as described above is divided into two types, dry and wet.

Compared with the dry type, a wet air cleaner has a merit of lowering noise and functioning as a humidifier by contacting inhaled air with water to precipitate suspended matter in water.

Hereinafter, a conventional wet air cleaner will be described with reference to the accompanying drawings.

As shown in FIG. 1, the wet air cleaner includes an upper case 1 having an inlet 3, an outlet case 15 having an outlet 16, and a lower case 19 having a space for storing water. ) To form the case part.

The upper case 1 and the discharge case 15 are combined to form an upper case 5, and the lower case 19 is coupled to the lower side of the upper case 5.

In addition, a driving unit 12 having a motor and a blower fan 10 that are rotated by being coupled to the motor are installed below the suction port 3.

The disk member 17 which is submerged in water stored in the lower case 19 is formed by stacking a plurality of disk-shaped disk members 17.

The operating state of the conventional wet air cleaner having the configuration as described above will be described.

Due to the rotation of the blower fan 10, the outside air moves downward through the suction port 3, and foreign matters in the air are buried on the surface of the disk member 17.

The disk member 17 is rotated by a separate driving device while the foreign matter on the surface is washed while passing through the water and then contact with the air again to remove the foreign matter in the air.

However, the inside of the lower case 19 is cleaned of the inside of the lower case 19 by using water or a cleaning agent by pinching water or the like. Therefore, when the control unit for detecting the water level inside the lower case 19 is installed in the lower case 19, water is introduced into the control unit, which causes a failure of the device. Therefore, there is a need for improvement.

The present invention has been created by the necessity as described above, the water level sensing type wet air cleaner that can prevent the cause of the device failure by the water flow into the control unit connected to the water level sensing device for detecting the water level of the lower case The purpose is to provide.

The water level sensing wet air purifier according to the present invention includes: an upper case, a lower case coupled to the lower side of the upper case and storing water therein, and a water level sensing device installed inside the lower case to measure the water level; A control signal is generated by receiving the measured value of the water level sensor, and is provided at a contact portion between the upper case and the lower case to electrically connect the control unit installed in the upper case and the control unit and the water level sensing device. It comprises a contact portion formed.

Preferably, it is configured to further include a disk member which is rotated by being partially locked to the stored water of the lower case.

In addition, the water level detecting device is installed around the sensor member and the body member including a body member installed in the vertical direction inside the lower case, a plurality of reed sensors spaced apart in the vertical direction inside the body member and installed of water It is configured to include a float that is moved up and down by the change of the water level and the magnet is fixed for operating the reed sensor.

The water level sensing device includes a capacitive sensor unit for measuring the water level by changing the dielectric constant according to the height of the stored water of the lower case.

The capacitive sensor unit may include: a sensing sensor installed according to a set level so as to detect a level according to a change in dielectric constant of the capacitance; And a capacitive semiconductor installed on the other side of the printed circuit board to receive the measured value of the sensing sensor and generate an output signal.

The contact part may include an elastic contact member that is selectively installed on the upper case and the lower case, the length of which is elastically variable, and a fixed contact member fixed to the upper case or the lower case facing the elastic contact member. It is composed.

The elastic contact member and the fixed contact member are installed at edge portions of the upper case and the lower case.

And, the elastic contact member is characterized in that the spring.

As described above, the water level sensing type wet air cleaner according to the present invention, unlike the conventional invention, the control unit is installed in the upper case, the water level sensing device in the lower case, the connection between the control unit and the water level sensing device is the upper case and the lower It is possible to block the inflow of water into the control unit by the contact portion is in contact with the case.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of a water level sensing wet air cleaner according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 2 is a side cross-sectional view showing the main configuration of the water-level sensing wet air cleaner according to an embodiment of the present invention, Figure 3 is a view showing a state in which the upper case and the lower case shown in FIG. 4 is an exploded perspective view of the float switch shown in FIG. 2, FIG. 5 is a side cross-sectional view of the float switch shown in FIG. 4, and FIG. 6 is an enlarged view of the capacitive sensor unit shown in FIG. 2. .

Water level sensing type wet air purifier according to an embodiment of the present invention, the upper case 20, the lower case 22 is coupled to the lower side of the upper case 20 and the water is stored inside, and the lower case ( 22) a control unit 30 installed inside the upper case 20 to generate a control signal received from the level sensor 50 for measuring the water level and the water level sensing device 50 is installed inside; In order to electrically connect the control unit 30 and the water level detecting device 50 includes a contact portion 40 provided at a contact portion of the upper case 20 and the lower case 22 to be electrically connected. It is composed.

The upper case 20 is a combination of the upper case provided with the suction port and the discharge case provided with the discharge port, the blower fan 80 is rotated by the motor inside the upper case 20.

Air is introduced into the upper case 20 and the lower case 22 so that the air comes into contact with the water contained in the lower case 22 so that only the purified air is introduced again into the room while foreign matter remains in the water. .

In order to increase the air purification ability while increasing the contact area of the air and water, the disk member is rotated by being partially locked in the stored water of the lower case 22 in the water level sensing wet air cleaner according to an embodiment of the present invention. It is comprised further including 24.

The detailed configuration of the wet air cleaner having the above configuration will be referred to the background of the present invention.

2 and 3 show the state in which the upper case 20 and the lower case 22 are coupled to each other and the state before the upper case 20 and the lower case 22 have been combined, respectively.

Inside or side of the upper case 20 is equipped with a control unit 30 for receiving a water level measurement value to generate a control signal.

The upper connection line 32 connected to the control unit 30 is installed along the upper case 20, and the lower case 22 installed below the upper case 20 detects a water level for detecting a water level. The device 50 is installed.

In the water level detecting device 50, the float switch 60 and the capacitive sensor unit 70 may be used at the same time, and only one may be selectively used as necessary.

The lower connection line 34 is connected to the water level sensing device 50 to transmit the measured value to the control unit 30.

The lower connection line 34 is installed along the lower case 22, and is connected to the upper connection line 32 by the contact portion 40.

The contact portion 40 is selectively installed on the upper case 20 and the lower case 22 to face the elastic contact member 42 and the elastic contact member 42, the length of which is elastically variable. It is configured to include a fixed contact member 44 fixed to the upper case 20 or lower case 22.

The contact portion 40 is various within the technical concept for the controller 30 and the water level sensing device 50 to be electrically connected only when the upper case 20 and the lower case 22 are coupled to each other. Change will be possible.

The elastic contact member 42 is installed on the upper case 20, and the fixed contact member 44 is installed on the lower case 22 facing the upper case 20, and the fixed contact member 44 is attached to the upper case 20. ) Is installed and the elastic contact member 42 is installed in the lower case 22 facing the same will be an embodiment of the present invention.

In addition, the elastic contact member 42 may be variously changed in the technical concept for pressing the fixed contact member 44 with a constant force in a state where the upper case 20 and the lower case 22 are coupled to each other. In the exemplary embodiment of the present invention, a spring is used as the elastic contact member 42 but is not limited thereto.

In addition, although only the fixed contact member 44 may be installed in the upper case 20 and the lower case 22, the reason for installing the elastic contact member 42 in the upper case 20 or the lower case 22 is provided. When the upper case 20 and the lower case 22 are in contact with each other, even if a gap occurs, the elastic contact member 42 has elasticity and is in contact with the fixed contact member 44, resulting in a more stable electrical connection state. Will be supplied.

The elastic contact member 42 is connected to the upper connection line 32, and the fixed contact member 44 is connected to the lower connection line 34.

In addition, in order for the upper case 20 to be more stably fixed to the lower case 22, a mounting protrusion 46 protrudes from an edge of the upper case 20, and the mounting protrusion 46 is inserted into the upper case 20. In the lower case 22 to be mounted, the mounting guide 48 surrounding the side surface of the mounting protrusion 46 is formed to protrude.

The elastic contact member 42 and the fixed contact member 44 are installed at corner portions of the upper case 20 and the lower case 22. Preferably, the contact portion 40 faces diagonally. And two are installed.

In addition, the water level sensing device 50 includes a float switch 60 and a capacitance sensor unit 70, wherein the float switch 60 is installed in the vertical direction inside the lower case 22. It is installed to surround the body member 62 and the sensor member 66 and the body member 62 including a plurality of lead sensors 67 spaced apart in the vertical direction inside the body member 62 and the body member 62 to change the water level. It is configured to include a float 64 is moved up and down by a fixed magnet 65 for operating the reed sensor 67.

5 and 6, the float switch 60 includes a float 64 provided with a magnet 65 and a sensor member 66 provided with a reed sensor 67.

The float switch 60 includes a body member 62 installed in the vertical direction inside the lower case 22 and a plurality of reed sensors 67 spaced apart in the vertical direction inside the body member 62. It includes a sensor member 66 and the body portion including the float 64 is moved up and down by the change of the water level and the magnet 65 for operating the reed sensor 67 is fixed.

The lead sensor 67 is installed at a predetermined interval on the mounting panel 68 so that the lead sensor 67 is installed at the body member 62 at regular intervals, and the mounting panel 68 is the body member 62. ) Inserted and installed inside.

The float 64 and the magnet 65 attached thereto are formed in a ring shape, but other shapes may be applied within a technical concept of moving up and down the body member 62 according to a change in water level.

By measuring the water level of the water inside the lower case 22 by the magnet 65 mounted on the float 64 to send the measurement value to the control unit 30, so that the user can easily determine the water level do.

In addition, the water level detecting device 50 is configured to include a capacitive sensor unit 70 for measuring the water level by changing the dielectric constant according to the height of the stored water of the lower case (22).

The capacitive sensor unit 70 is provided with a sensing sensor 74 provided for each set level to detect a water level according to a change in dielectric constant of the capacitance, and the sensing sensor 74 is provided on one side of the sensing sensor 74. A printed circuit board 72 having a circuit electrically connected to the printed circuit board, and a capacitance semiconductor 76 installed on the other side of the printed circuit board 72 to receive a measurement value of the sensing sensor 74 to generate an output signal. It is configured to include).

The capacitive sensor unit 70 is operated by a change in capacitance, the capacitance is proportional to the dielectric constant and the cross-sectional area of the conductor, it is inversely proportional to the spacing between the conductors.

The capacitive sensor unit 70 is different from the dielectric constant of air and the dielectric constant of water, and detects a change in dielectric constant caused by such a difference, thereby measuring the water level by a non-contact method.

The dielectric constant of air, which is a medium affecting the capacitive sensor unit 70, is about 1, and the dielectric constant of water is about 80, and the difference between the dielectric constant between air and water is relatively large, whereby the capacitive sensor unit 70 and water Even if the side wall member 90 is located between the inner side of the lower case 22 to be contained, the change in the dielectric constant from water to air generated due to the water level is easily measured by the capacitive sensor unit 70.

The capacitive sensor unit 70 is inserted into the lower case 22 or installed inside the side case member 90 protruding from the lower case 22 to form an accommodation space.

An operating state of the water level sensing wet air cleaner according to the embodiment of the present invention having the configuration as described above will be described.

When the upper case 20 and the lower case 22 are separated by supplying water to the inside of the lower case 22 or by replacing and cleaning the stored water, the elastic contact member 42 and the fixed contact member 44 are separated. Are spaced apart from each other to stop the operation of the water level detecting device (50).

In addition, when the upper case 20 and the lower case 22 are coupled to each other, the mounting protrusion 46 of the upper case 20 is inserted into the mounting guide 48 of the lower case 22 more stable. The elastic contact member 42 is in contact with the fixed contact member 44, and the power and control signals in the upper connection line 32 connected to the controller 30 are controlled by the elastic contact member 42. ) And then pass through the fixed contact member 44, and are transmitted to the float switch 60 and the capacitive sensor unit 70 along the lower connection line 34.

As a result, the water level detecting device 50 operates, and transmits the water level in the lower case 22 to the control unit 30 mounted on the upper case 20.

The control unit 30 is not mounted to the lower case 22, but is mounted on the upper case 20, thereby preventing water from penetrating into the control unit 30 by cleaning or supply of water in advance, thereby ensuring operational reliability. Will be improved.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

1 is an exploded perspective view of a wet air cleaner according to the prior art.

Figure 2 is a side cross-sectional view showing the main configuration of the water level sensing wet air purifier according to an embodiment of the present invention.

3 is a view illustrating a state in which the upper case and the lower case shown in FIG. 2 are separated.

4 is an exploded perspective view illustrating the float switch shown in FIG. 2.

FIG. 5 is a side cross-sectional view of the float switch shown in FIG. 4. FIG.

6 is an enlarged view of the capacitive sensor shown in FIG. 2.

<Description of Symbols for Main Parts of Drawings>

20: upper case 22: lower case

24 disc member 30 control unit

32: upper connection line 34: lower connection line

40: contact portion 42: elastic contact member

44: fixed contact member 46: mounting projection

48: mounting guide 50: water level detection device

60: float switch 62: body member

64: float 65: magnet

66: sensor member 67: reed sensor

68: mounting panel 70: capacitive sensor unit

72: printed circuit board 74: detection sensor

76: capacitive semiconductor 80: blowing fan

90 side wall member

Claims (8)

Upper case; A lower case coupled to a lower side of the upper case and having water stored therein; A water level sensing device installed inside the lower case to measure a water level; A controller installed in the upper case to generate a control signal by receiving the measured value of the water level sensor; And A contact portion provided at the contact portion of the upper case and the lower case to electrically connect the control unit and the water level sensing device. Water level detection type wet air purifier, characterized in that configured to include a. The method of claim 1, The water level sensing type wet air purifier, characterized in that it further comprises a disk member which is rotated by being locked to the stored water of the lower case. The method of claim 1, The water level detecting device, the body member is installed in the vertical direction inside the lower case; A sensor member including a plurality of reed sensors spaced apart in the up and down direction inside the body member; And It is installed to surround the body member is moved up and down by the change of water level, and the float is fixed with a magnet for operating the reed sensor Water level detection type wet air purifier, characterized in that configured to include a. The method of claim 1, The water level detection device, the capacitive sensor unit for measuring the water level by changing the dielectric constant according to the height of the water stored in the lower case Water level detection type wet air purifier, characterized in that configured to include a. The method of claim 4, wherein The capacitive sensor unit, and a sensing sensor installed for each set level to detect the water level according to the change in the dielectric constant of the capacitance, A printed circuit board provided with one side of the sensing sensor and printed with a circuit electrically connected to the sensing sensor; Capacitive semiconductor is installed on the other side of the printed circuit board to receive the measured value of the sensor and generate an output signal Water level detection type wet air purifier, characterized in that configured to include a. The method of claim 1, The contact portion is provided in the upper case and the lower case and the elastic contact member is elastically variable in length and; A fixed contact member fixed to an upper case or a lower case facing the elastic contact member Water level detection type wet air purifier, characterized in that configured to include a. The method of claim 6, The level contact type wet air cleaner, characterized in that the elastic contact member and the fixed contact member is installed in the corner portion of the upper case and the lower case. The method of claim 6, The water level sensing type wet air cleaner, characterized in that the elastic contact member is a spring.

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