KR20100005501A - System and method for judging the noninstalling of humidification filter of natural humidification air cleaner - Google Patents

Abstract

PURPOSE: A system for judging the noninstalling of humidification filter in a natural humidification air cleaner and a method therefor are provided to recognize a state of the natural humidification air cleaner, and to mount a humidification filter rapidly. CONSTITUTION: A system for judging the noninstalling of humidification filter in a natural humidification air cleaner includes a driving mode determining part(310), a motor speed measurement part(320), a pulse signal detecting part(330), and an operation part(340). The driving mode determining part determines a state of the natural humidification air cleaner. The motor speed measurement part measures the speed of a motor. The pulse signal detecting part detects a pulse signal produced by the motor. The operation part compares the duty ratio of the pulse signal in a general clean mode and the duty ratio of the duty ratio of the pulse signal of a humidification clean mode.

Description

System and method for judging the noninstalling of humidification filter of natural humidification air cleaner}

One aspect of the present invention relates to a system and method for determining a humidification filter not mounted in a natural humidifying air purifier, and more particularly, to a system and a method for determining whether a humidification filter is installed without disassembling the natural humidifying air purifier.

In general, the air purifier is a device for removing indoor dust and bacteria contained in the indoor air, or by deodorizing the smell of cigarettes, sweat and the like to purify the indoor air.

정도까지의 미세한 먼지나 세균 등을 집진하여 제거하도록 이루어지며, 실내공기의 오염에 의해 감소된 음이온을 발생시켜 쾌적한 실내환경을 제공한다.Such air cleaners typically draw contaminated air into the fan and allow 0.03

It is made to collect and remove fine dust or bacteria to a degree, and provides a comfortable indoor environment by generating negative ions reduced by pollution of indoor air.

1 is a block diagram of a motor drive system provided in a conventional air purifier. As shown in FIG. 1, the power supply unit 20 includes a switching mode power supply (SMPS) to convert an AC voltage, which is a commercial power supply, to a DC voltage, and the switching device driver 40 is converted from the power supply unit 20. The DC voltage is applied to generate the switching control signal. In addition, the switching element 50 converts the DC voltage applied from the power supply unit 20 into a three-phase voltage according to the switching control signal and applies it to the motor 10.

Due to the three-phase voltage, the winding (not shown) of the motor 10 generates a magnetic field so that the rotor (not shown) of the motor 10 rotates. The compressor (not shown) is driven by the rotation of the rotor of the motor 10.

As the rotor of the motor 10 rotates, the counter electromotive force is output to the winding, and the counter electromotive force detection unit 70 detects the counter electromotive force and applies it to the microcomputer 60. In response to the detection of the counter electromotive force, the microcomputer 60 controls the switching element driver 40 so that the motor 10 operates correctly.

The DC voltage converted by the power supply unit 20 is supplied to the high pressure generator 30 to generate a high pressure, and the dust collecting filter 80 performs the dust collection using the high voltage input from the high pressure generator 30. In addition, the DC voltage converted by the power supply unit 20 is supplied to the microcomputer 60, and the microcomputer 60 functions as air volume control, pollution degree display, timer correction, and negative ion generation. The negative ion generator 90 generates high pressure. As shown in the section 30, the negative high voltage is induced and the output of the negative ion is supplied to the negative ion generating needle, thereby causing the negative ions to flow out.

The voltage applied to the motor 10 is a pulse width modulation (PWM) waveform. If the duty ratio is large, the driving force of the motor 10 is strong, and if the duty ratio is small, the driving force of the motor 10 is weak. Become. The driving circuit of the motor 10 adjusts the rotational speed of the motor 10 by adjusting the duty ratio of PWM, and the motor 10 rotates the fan.

In using the air purifier as described above may be used by additionally equipped with a humidification filter, such a natural humidifying air purifier has a different function due to the installation or non-installation of the humidification filter. In other words, when the humidification filter is mounted, the humidification function of evaporating moisture into the air may be performed by sprinkling the humidifying water.

However, if the user determines that the humidification filter is installed without installing the humidification filter in the natural humidification air purifier and does not continuously install the humidification filter, the humidification function cannot be performed as in a general air purifier. There is this.

One aspect of the present invention is to make it possible to know whether the humidification filter is installed without disassembling the natural humidifying air purifier.

Another aspect of the present invention aims to enable a user to know that a humidification filter is not installed in a natural humidifying air purifier so that the humidification filter can be quickly installed.

One aspect of the invention, the operation mode determination unit for determining whether the natural humidification air purifier is set to the humidification clean mode; A motor speed measuring unit configured to measure a speed of a motor for driving a fan of the natural humidifying air purifier when it is determined that the natural humidifying air purifier is set to a humidifying clean mode; A pulse signal detector for detecting a pulse signal generated by the motor of the natural humidifying air cleaner; And receiving a speed signal of the motor from the motor speed measuring unit to determine whether a difference between the rotational speed of the motor and a preset reference speed is smaller than a difference of a preset speed, and receiving a pulse signal of the motor from the pulse signal detection unit. If the difference between the duty ratio of the pulse signal in the normal clean mode and the humidification of the pulse signal in the clean mode is less than the difference between the preset ratio, if the two conditions are satisfied, the humidification air purifier Computing unit for determining that the filter is not mounted; provides a determination system without a humidification filter of a natural humidifying air cleaner comprising a.

In one embodiment of the present invention, when the difference between the duty ratio of the pulse signal in the normal clean mode and the duty ratio of the pulse signal in the humidification clean mode is less than the difference between the preset ratio, the operation unit is not equipped with a humidification filter The present invention provides a determination system without a humidification filter of a natural humidifying air purifier, wherein a message or an alarm signal is displayed on a display unit.

In another embodiment of the present invention, the predetermined speed difference provides a determination system without a humidification filter of a natural humidifying air cleaner, characterized in that within 20rpm.

Another aspect of the invention, the first step of determining whether the natural humidifying air purifier is set to the humidifying clean mode; A second step of measuring a speed of a motor for driving a fan of the natural humidifying air purifier when it is determined that the natural humidifying air purifier is set to a humidifying clean mode; Receiving a speed signal of the motor to determine whether a difference between a rotation speed of the motor and a predetermined reference speed is smaller than a difference between a preset speed; A fourth step of detecting a pulse signal generated by a motor of the natural humidifying air cleaner; A fifth step of receiving a pulse signal of the motor and determining whether a difference between a duty ratio of a pulse signal in a general clean mode and a duty ratio of a pulse signal in a humidified clean mode is smaller than a difference between a preset ratio; And a sixth step of determining that the natural humidifying air purifier is not equipped with a humidification filter when all of the determination conditions of the third and fifth steps are satisfied. The humidification filter of the natural humidifying air purifier is not installed. Provide a method of judgment.

In one embodiment of the present invention, if both determination conditions are satisfied, the humidification filter of the natural humidifying air purifier, characterized in that it further comprises a seventh step of displaying a message or an alarm signal that the humidification filter is not mounted. Provide a method of determining no mounting.

According to an aspect of the present invention, it is possible to know whether or not the humidification filter is installed without disassembling the natural humidifying air cleaner.

According to another aspect of the present invention, by allowing the user to know that the humidification filter is not equipped with a natural humidifying air purifier, it is possible to quickly install the humidification filter, thereby maintaining a humid indoor environment This can help improve the living environment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Shapes and sizes of the elements in the drawings may be exaggerated for clarity, elements denoted by the same reference numerals in the drawings are the same elements.

2 is a configuration diagram of a system for determining a humidification filter without a natural humidifying air purifier of the present invention, and FIG. 3 is a configuration diagram of the controller of FIG. 2. 2 and 3, the determination system without the humidification filter of the natural humidifying air cleaner includes an operation unit 100, a power supply unit 200, a control unit 300, a display unit 400, and a control unit 300. The driving mode determining unit 310, the motor speed measuring unit 320, a pulse signal detecting unit 330, and a calculating unit 340 may be included.

The operation unit 100 receives desired driving information (eg, general clean mode or humidified clean mode) and other operation signals from the user.

The power supply unit 200 supplies power to the natural humidifying air purifier. The rectifier unit rectifies and smoothes the AC power and supplies the DC power, and the three-phase AC power source having a pulse frequency having an arbitrary variable frequency of the DC power supplied from the rectifier. Inverter may be configured to supply to the motor.

The driving mode determination unit 310 determines whether the natural humidifying air purifier is set to the humidifying clean mode. When the natural humidifying air purifier is set to the general clean mode, the humidification effect of evaporating moisture into the air by sprinkling the humidifying water is not performed, and when the humidifying clean mode is set as the above humidifying action.

The motor speed measuring unit 320 measures the speed of the motor driving the fan of the natural humidifying air cleaner. The rotational speed of the motor is usually expressed in revolutions per minute (rpm). The rotational speed of the motor can be measured by measuring the number of pulses generated by the motor.

The pulse signal detector 330 detects a pulse signal generated by the motor of the natural humidifying air cleaner.

The calculating unit 340 receives the speed signal of the motor from the motor speed measuring unit 320 to determine whether the difference between the rotational speed of the motor and the preset reference speed is smaller than the difference between the preset speeds, and the pulse signal detecting unit 330. 2) determine whether the difference between the duty ratio of the pulse signal of the general clean mode and the duty ratio of the pulse signal of the humidified clean mode is smaller than the difference of the preset ratio by receiving the pulse signal of the motor If all conditions are satisfied, it is determined that the natural humidification air purifier does not have a humidification filter installed. Preferably, the difference in the preset speed is within 20 rpm.

When the difference between the duty ratio of the pulse signal in the general clean mode and the duty ratio of the pulse signal in the humidification clean mode is smaller than the difference between the preset ratios, the operation unit 340 displays a message indicating that the humidification filter is not installed or an alarm signal. 400). The user knows that the humidification filter is not installed in the natural humidifying air purifier through a message or an alarm signal, and can quickly install the humidification filter.

4 is a diagram illustrating an operation state when the natural humidification air purifier of the present invention is operated in a general clean mode when the humidification filter is mounted (a) and when operated in a humidified clean mode (b). As shown in FIG. 4, the natural humidifying air purifier is switched on such that a fan 800 rotated by a motor, a humidification filter 700 for sprinkling humidification water with air, and air passes through the humidification filter 700. And a housing 900 having a discharge port 900a for discharging air passing through the fan 800 to the outside.

When the natural humidifying air purifier is set to the normal clean mode as shown in (a), since the blower plate 600 is switched off, air does not pass through the humidification filter 700 so that no humidification action occurs. . However, when the natural humidifying air purifier is set to the humidifying clean mode as shown in (b), since the blower plate 600 is switched on, the air passes through the humidifying filter 700 and a humidifying action occurs. .

If the natural humidifying air purifier is set to the humidifying clean mode as shown in (b), if the natural humidifying air purifier is not equipped with the humidification filter 700, the humidifying function is performed as in the general clean mode as shown in (a). You will not be able to.

FIG. 5 is a graph comparing pulse signals generated by a motor when the humidification filter is not installed in the natural humidifying air purifier of the present invention (a) and when the humidification filter is mounted (b). As shown in FIG. 5, the motor repeatedly generates the same pulse signal while rotating the fan. In this case, the duty ratio is changed when the normal clean mode and the humidified clean mode are set.

When the natural humidifying air purifier is set to the normal clean mode as shown in (a), the duty ratio is smaller than when it is set to the humidified clean mode as shown in (b). For example, the duty ratio of (a) may be expressed as Equation 1, and the duty ratio of (b) may be expressed as Equation 2. Here, the plurality of pulse signals generated by the motor in the same clean mode have the same magnitude and period.

It can be seen from Equations 1 and 2 that the duty ratio is higher in the humidified clean mode than in the normal clean mode.

When the humidification filter is installed, the differential pressure is generated because air passes through the humidification filter, and the rotational speed of the motor is reduced due to the generation of the differential pressure. Therefore, the rotational speed of the motor in the humidified clean mode is different from the rotational speed of the motor in the normal clean mode.

At this time, since the duty ratio of the pulse signal generated by the motor is increased to compensate for the reduction in the rotational speed of the motor, the duty ratio of the pulse signal generated by the motor in the humidified clean mode is determined by the pulse signal generated by the motor in the normal clean mode. There is a difference with the duty ratio.

From this fact, it is determined that the humidification filter is not installed if the rotational speed of the motor and the duty ratio of the pulse signal are within a certain range compared with the normal clean mode when the natural humidifying air purifier is set to the humidifying clean mode.

6 is a flowchart illustrating a method for determining whether a humidification filter is not mounted in the natural humidifying air purifier of the present invention. Referring to FIG. 6 together with FIGS. 2 and 3, a method of determining whether a humidification filter is not mounted in a natural humidifying air cleaner is as follows.

First, the operation mode determination unit 310 determines whether the natural humidifying air purifier is set to the humidification clean mode (S100).

Thereafter, the motor speed measuring unit 320 measures the speed of the motor driving the fan of the natural humidifying air cleaner (S200).

Thereafter, the calculating unit 340 receives the speed signal of the motor from the motor speed measuring unit 320 to determine whether the difference between the rotational speed of the motor and the preset reference speed is smaller than the difference between the preset speeds (S300). When the humidification filter is installed, the differential pressure is generated because the air passes through the humidification filter, and the rotational speed of the motor is reduced due to the generation of the differential pressure, and thus the primary determination is whether the humidification filter is installed.

Thereafter, the pulse signal detector 330 detects a pulse signal generated by the motor of the natural humidifying air cleaner (S400).

Subsequently, the operation unit 340 receives the pulse signal of the motor from the pulse signal detection unit 330 and the difference between the duty ratio of the pulse signal in the general clean mode and the pulse signal in the humidification clean mode is the difference between the preset ratio. It is determined whether it is smaller (S500). Due to the reduction in the rotational speed of the motor in step S3OO, the duty ratio of the pulse signal generated by the motor is increased to compensate for the reduction in the rotational speed of the motor, and thus it may be secondarily determined whether the humidification filter is installed.

Subsequently, when both determination conditions of steps S300 and S500 are satisfied, the calculator 340 determines that the natural humidifying air purifier is not equipped with a humidification filter, and displays a message or an alarm signal indicating that the humidification filter is not installed. Indicated at 400 (S600). In this way, the user knows that the humidification filter is not installed in the natural humidification air purifier through a message or an alarm signal, and can quickly install the humidification filter.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It is intended that the scope of the invention be defined by the appended claims, and that various forms of substitution, modification, and alteration are possible without departing from the spirit of the invention as set forth in the claims. Will be self-explanatory.

1 is a block diagram of a motor drive system provided in a conventional air purifier.

Figure 2 is a block diagram of a determination system without a humidification filter of a natural humidifying air purifier of the present invention.

3 is a configuration diagram of the controller of FIG. 2.

4 is a diagram illustrating an operation state when the natural humidification air purifier of the present invention is operated in a general clean mode when the humidification filter is mounted (a) and when operated in a humidified clean mode (b).

FIG. 5 is a graph comparing pulse signals generated by a motor when the humidification filter is not installed in the natural humidifying air purifier of the present invention (a) and when the humidification filter is mounted (b).

6 is a flowchart illustrating a method for determining whether a humidification filter is not mounted in the natural humidifying air purifier of the present invention.

                 <Explanation of symbols for the main parts of the drawings>

100: operation unit 200: power supply unit

300: control unit 310: operation mode determination unit

320: motor speed measurement unit 330: pulse signal detection unit

340: calculation unit 400: display unit 500: motor 600: blower plate

700: humidification filter 800: fan

900 housing 900a discharge port

Claims (5)

An operation mode determination unit which determines whether the natural humidification air purifier is set to a humidification clean mode; When it is determined that the natural humidifying air purifier is set to the humidification clean mode, the motor speed measuring unit for measuring the speed of the motor for driving the fan of the natural humidifying air cleaner; A pulse signal detector for detecting a pulse signal generated by the motor of the natural humidifying air cleaner; And Receiving the speed signal of the motor from the motor speed measuring unit to determine whether the difference between the rotational speed of the motor and the predetermined reference speed is smaller than the difference between the preset speed, and receives the pulse signal of the motor from the pulse signal detection unit It is determined whether the difference between the duty ratio of the pulse signal in the general clean mode and the duty ratio of the pulse signal in the humidification clean mode is smaller than the difference between the preset ratios. When both of the two conditions are satisfied, the natural humidifying air purifier uses a humidification filter. Computing unit for determining not to install; Determination system without a humidification filter of a natural humidifying air purifier, characterized in that it comprises a. The method of claim 1, When the difference between the duty ratio of the pulse signal in the normal clean mode and the duty ratio of the pulse signal in the humidification clean mode is smaller than the difference between the preset ratios, the operation unit displays a message or an alarm signal indicating that the humidification filter is not installed on the display unit. Determination system without a humidification filter of a natural humidifying air purifier, characterized in that. The method of claim 1, The predetermined speed difference is not equipped with a humidification filter of the natural humidifying air purifier, characterized in that less than 20rpm. A first step of determining whether the natural humidifying air purifier is set to a humidifying clean mode; If it is determined that the natural humidifying air purifier is set to a humidifying clean mode, a second step of measuring a speed of a motor for driving a fan of the natural humidifying air purifier; Receiving a speed signal of the motor to determine whether a difference between a rotation speed of the motor and a predetermined reference speed is smaller than a difference between a preset speed; A fourth step of detecting a pulse signal generated by a motor of the natural humidifying air cleaner; A fifth step of receiving a pulse signal of the motor and determining whether a difference between a duty ratio of a pulse signal in a general clean mode and a duty ratio of a pulse signal in a humidified clean mode is smaller than a difference between a preset ratio; And A sixth step of determining that the natural humidifying air purifier is not equipped with a humidification filter when all of the determination conditions of the third and fifth steps are satisfied; Humidification filter not mounted determination method of a natural humidifying air purifier, characterized in that it comprises a. The method of claim 4, wherein And the seventh step of displaying a message or an alarm signal indicating that the humidification filter is not installed when both of the two determination conditions are satisfied.

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