TWI725587B - Air purifier - Google Patents

Abstract

The air cleaner (1) includes: a main body shell (4) with: an air supply port (2), an exhaust port (3), and a ventilation path (6) connecting the air supply port (2) and the exhaust port (3) Air blower (5), which is an air supply device installed in the main body casing (4), sucking indoor air from the air inlet (2) and exhausting it from the exhaust port (3); electric dust collector (8) and HEPA filter (9) It serves as a plurality of air purifiers installed in the ventilation path (6) to purify the indoor air sucked in from the air inlet (2); and the control unit (13) as a control device for controlling the operation of the air blowing device. The control device makes the functions of the plural air cleaning devices effective or ineffective based on specific conditions.

Description

Air purifier

The present invention relates to an air purifier that cleans dirty air in a target space.

The air purifier is a device that has the function of removing dirt, dust, odor, etc., in the air of the target room to make the air clean. For example, what is shown in Patent Document 1 is such an air cleaner. Patent Document 1 discloses electric dust collection and HEPA filter (High Efficiency Particulate Air Filter) as a means for removing dust in polluted air in an air cleaning device.

Here, electric dust collection is to apply a high voltage of several kV (for example, 10 kV) between metal electrodes to form a discharge space, so that the dust in the air passing through it is positively charged or negatively charged, so that the charged dust is borrowed A method of collecting dust by Coulomb force adsorption on a conductive dust-collecting filter with a potential opposite to dust. The electric dust collector has the following characteristics. (1) If it is a small device installed in an air cleaner for general residential use, the dust collection rate is about 10% (for example, 60%), which is lower than that of a HEPA filter. (2) The size of the gap between the electrodes reaches several mm to tens of mm (for example, 10 mm), so the pressure loss is as low as several Pa to several tens of Pa (for example, 10 Pa). (3) Metal electrodes and dust collection filters can be cleaned by washing with water, so they generally do not need to be replaced.

In addition, HEPA filters are mainly formed of glass fibers with a diameter of 1 μm to 10 μm or less, and the size of the voids between the fibers is several tens of μm. In the JIS standard, the HEPA filter is defined as an "air filter with the following performance. At a fixed air volume, it has a particle collection rate (dust collection rate) of 99.97% or more for particles with a particle size of 0.3μm, and the initial pressure The loss is less than 245Pa". The HEPA filter is very fragile and difficult to clean when it is clogged. Therefore, it is generally replaced after a certain period of use.

Advanced technical literature Patent literature: Patent Document 1: Japanese Patent Laid-Open No. 2002-174443

The problem to be solved by the invention

As the dust collection method of the conventional air purifier as mentioned above, the HEPA filter has a high dust collection capacity, but if it becomes dirty, it must be thrown out and replaced. The electrical dust collector does not need to be replaced (washable), but it collects dust. The capacity is lower than the HEPA filter. That is, in the conventional air purifier, the characteristics of the air purifying action that can be performed are determined by the air purifying device it is equipped with, and it is difficult to respond to the use of environmental conditions such as air pollution, or the ease of use for users, etc. Appropriately implement air cleaning action.

The present invention was developed in order to solve the above-mentioned problems, and its object is to provide an air purifier that implements an appropriate air purifying operation in accordance with the environmental conditions or usage patterns of use. Means to solve the problem

The air cleaner of the invention includes: a main body housing with: an air supply port, an exhaust port, and a ventilation path connecting the air supply port and the exhaust port; an air blowing device, which is provided in the main body housing, sucks indoor air from the air supply port and from Exhaust from the exhaust port; multiple air purifiers are installed in the ventilation path to make the indoor air sucked in from the air inlet clean; and a control device to control the operation of the air supply device; the control device, based on specific conditions, makes the multiple air purifiers The functions are valid or invalid respectively. Invention effect

The present invention is configured as described above, and therefore, it is possible to provide an air purifier that implements an appropriate air purifying operation in accordance with use environmental conditions such as air pollution or the user's use mode.

Hereinafter, an embodiment of the air cleaner of the present invention will be described in detail based on the drawings.

Implementation mode 1. Fig. 1 is a cross-sectional configuration diagram of the air purifier according to Embodiment 1 of the present invention. Figs. 2 and 3 are diagrams showing the operating state of the air purifier when the bypass passage is closed and opened. Figs. 4, 6 to 8 To show an example of the function switching of the air purifier according to the amount of air pollution, FIG. 5 is a flowchart showing the control of the air purifier.

First, the structure of the air cleaner 1 of Embodiment 1 is demonstrated using FIG. 1. FIG. In FIG. 1, the air purifier 1 has a main body casing 4, which is provided with an air inlet 2 for sucking indoor air in the room where the air purifier 1 is installed, and for supplying air cleaned by the air purifier described later to The indoor exhaust port 3 is provided with a ventilation path 6 connecting the air inlet 2 and the exhaust port 3 in the main body casing 4, and a blower as a blowing device composed of a fan 5a and a motor 5b arranged in the ventilation path 6 5. In addition, the ventilation path 6 is equipped with an electric dust collector 8 as the first air cleaning device. When viewed from the air supply port 2, it is located downstream of the fan 5a, and it is the air that electrically collects the sucked air. Cleaning device; and the HEPA filter 9 as the second air cleaning device, which is located further downstream of the electric dust collector 8, which is an air cleaning device that collects dust from the air that has passed through the electric dust collector 8. In addition, the ventilation path 6 is provided with a bypass ventilation path 7 so that the air that has passed through the electric dust collector 8 is guided to the exhaust port 3 without passing through the HEPA filter 9; and an air brake 10 is used to switch so that the air that has passed through the electric dust collector 8 The air passes through the HEPA filter 9 side, or passes through the bypass duct 7 side. Furthermore, the air cleaner 1 has a control unit 13 as a control device for controlling the operation of the blower 5, the electric dust collector 8 and the air brake 10, and the remote controller 11 is connected to the control unit 13 through a communication line 12. Furthermore, in the following description, the remote controller is referred to as a remote controller. The remote control 11 has a dust sensor 14 that detects the amount of dust in the indoor air, and it will be based on the button operation of the remote control 11 (start or stop the air cleaning operation, etc.) and the room detected by the dust sensor 14 The operation command of the amount of dust in the air is sent to the control unit 13.

Furthermore, in FIG. 1, the solid arrow A indicates that the air flow from the air supply port 2 through the electric dust collector 8 and the HEPA filter 9 and discharged from the exhaust port 3 by the blower 5 indicates that the dashed arrow B indicates that it does not pass The HEPA filter 9 passes through the bypass passage 7 and exhausts the air flow from the exhaust port 3.

The electric dust collector 8 is configured with a metal positive electrode (not shown) to which a high voltage of about 10kV is applied, a metal ground electrode (not shown) with the same potential as the ground potential, and a positive electrode The rear section of the ventilation path 6 and the ground electrode is a conductive dust collection filter (not shown) with the same potential as the ground potential. A high voltage is applied between the positive electrode and the ground electrode to form a discharge space, whereby the dust passing through the discharge space is charged, and the charged dust is adsorbed on the ground electrode or the dust filter by the Coulomb force. To collect dust.

The HEPA filter 9 is formed of glass fibers with a diameter of about 1 μm to 10 μm or less than 10 μm, and the gap between the fibers is about several 10 μm. As mentioned above, it has a higher dust collection rate than the electric dust collector 8.

Next, the basic operation of the air purifier 1 will be briefly described using FIGS. 2 and 3. Fig. 2 is a diagram showing the operating state of the air purifier when the bypass passage is closed. By the switching control of the air brake 10, when the bypass passage 7 is closed, the air that has passed through the electric dust collector 8 passes through the HEPA filter 9 and is supplied to the room from the exhaust port 3. The arrows shown in FIG. 2 indicate the air flow when the bypass passage 7 is closed.

Fig. 3 is a diagram showing the operating state of the air purifier when the bypass passage is opened. By the switching control of the air brake 10, when the bypass passage 7 is opened, the air that has passed through the electric dust collector 8 does not pass through the HEPA filter 9, but instead passes through the bypass passage 7 and is supplied to the room from the exhaust port 3. The arrows shown in FIG. 3 indicate the air flow when the bypass passage 7 is opened. That is, the air brake 10 is controlled to close or open the bypass passage 7, thereby switching to allow air to pass through or not to pass through the HEPA filter 9, in other words, it can be switched to make the function of the HEPA filter 9 effective or ineffective. Furthermore, for the electric dust collector 8, the function of the electric dust collector 8 can be switched to be effective or ineffective by whether or not a high voltage is applied to the electrodes of the electric dust collector 8.

The control unit 13 determines the operation mode of the air cleaner 1 based on the combination of the above-mentioned switching control of the air brake 10 and the power control of the electric dust collector 8 (ON and OFF of applying a high voltage to the electrodes). The operation modes include the following 3 types. (1) Use electric dust collector 8 and HEPA filter 9 to collect dust (dual dust collection operation) (2) Use only the electric dust collector 8 to collect dust (electric dust collection operation) (3) Use only HEPA filter 9 to collect dust (HEPA dust collection operation)

Next, describe the characteristics of each operating mode. (1) Double dust collection operation The electric dust collector 8 is operated (a high voltage is applied between the electrodes) to electrically collect dust, and the bypass air passage 7 is closed with the air lock 10, thereby also collecting dust with the HEPA filter 9. In this way, a very high dust collection rate is obtained. In addition, the air after the electrical dust collection is passed through the HEPA filter 9, thereby reducing the amount of dust collected by the HEPA filter 9 and extending the refresh cycle of the HEPA filter 9. (2) Electric dust collection operation Operate the electric dust collector 8 (apply a high voltage between the electrodes) to collect electric dust, and open the bypass passage 7 with the air lock 10, so that the air after electric dust collection does not pass through the side of the HEPA filter 9 but passes through the side of the bypass passage 7 . Therefore, the HEPA filter 9 is not used for dust collection. Thereby, the dust collection rate is lower than that of the double dust collection operation, but it is possible to prevent dust from adhering to the HEPA filter 9, so the refresh cycle of the HEPA filter 9 can be extended. (3) HEPA dust collection operation Stop the electric dust collector 8 (no high voltage is applied between the electrodes) to prevent electric dust collection, and close the bypass passage 7 with the air brake 10, so that the air passing through the electric dust collector 8 is collected by the HEPA filter 9 . As a result, the dust collection rate is slightly lower than the double dust collection operation, but almost the same high dust collection rate can be obtained. In addition, since electric dust collection is not performed, power consumption can be reduced.

Next, using FIGS. 4 and 5, the control unit 13 of the air purifier 1 will be described based on the amount of dust in the air detected by the dust sensor 14 and select one of three operation modes to perform air cleaning. The action of running. Fig. 4 is a diagram showing an example of the function switching of the air purifier according to the amount of air pollution, and Fig. 5 is a flowchart showing the control of the air purifier in this case.

In FIG. 4, the control unit 13 has two thresholds, namely, a first threshold on the side with a smaller dust amount level and a second threshold on the side with a higher dust amount level. When the amount of dust detected by the dust sensor 14 is less than the first threshold value, the electric dust collector 8 is used. Because of the small amount of dust collected, it is difficult to expect the effect of reducing the amount of dust in the indoor air more than the current situation. However, the use of HEPA filter 9 can obtain high dust collection effect, so the operation mode is set to (3) HEPA dust collection operation (electric dust collection function: invalid (high voltage stop), HEPA dust collection function: effective (make air Pass the HEPA filter 9 side)). In this case, the amount of dust collected by the HEPA filter 9 can be reduced because the clean air that is less than the first threshold is collected. In addition, the electric dust collector 8 that cannot be expected to have a dust collection effect is stopped, thereby making it possible to reduce unnecessary power consumption. In addition, in Fig. 4 and Figs. 6, 7 and 8 described later, "○" means valid, and "×" means invalid. The control unit 13 makes the function of the electric dust collector 8 match when the amount of dust is lower than the first threshold value, when the amount of dust is greater than or equal to the second threshold value, and when the amount of dust is greater than or equal to the first threshold value and lower than the second threshold value. The combination of effective and ineffective functions of the HEPA filter 9 is different.

When the amount of dust detected by the dust sensor 14 is greater than the first threshold and less than the second threshold, because the indoor air is already dirty, a high dust collection rate is required, but if only the HEPA filter 9 is used for collection Dust, the amount of dust collected by the HEPA filter 9 will increase, and the update cycle of the HEPA filter 9 may be shortened. Therefore, the operation mode is (1) dual dust collection operation (electric dust collection function: effective (high voltage application), HEPA dust collection function: effective (passing air through the HEPA filter 9 side)). In this case, dust is collected by the HEPA filter 9 for the air collected by the electric dust collector 8, so that the amount of dust collected in the HEPA filter 9 can be reduced.

When the amount of dust detected by the dust sensor 14 is greater than the second threshold, because the indoor air is very dirty, if the HEPA filter 9 is used for dust collection, even if it is used in conjunction with the electric dust collector 8, the HEPA filter The amount of dust collected in the filter 9 is also increased, which shortens the update cycle of the HEPA filter 9. Therefore, the operation mode is (2) Electric dust collection operation (electric dust collection function: effective (high voltage application), HEPA collection Dust function: ineffective (to pass air through the side of the bypass duct 7)). In this case, since the amount of dust in the air is inherently large, even if only the electric dust collector 8 with a low dust collection rate is operated, a dust collection effect can be expected. In addition, since the HEPA filter 9 is not used, the update cycle of the HEPA filter 9 can be lengthened.

Next, the flow of the operation control of the air cleaner 1 based on the amount of dust in the air shown in FIG. 4 will be described with reference to FIG. 5. The control unit 13 of the air purifier 1 starts the air purifying operation in accordance with the operation command from the remote controller 11. First, in step S1 of FIG. 5, when the blower 5 is operated, an air flow from the air supply port 2 to the exhaust port 3 through the ventilation path 6 is generated. Thereby, indoor air is sucked in from the air inlet 2. On the other hand, the dust sensor 14 provided in the remote controller 11 measures the amount of dust in the indoor air (step S2). The control unit 13 compares the amount of dust measured in step S2 with the second threshold value (step S3). Here, if the amount of dust is greater than or equal to the second threshold value, step S4 is performed, the electric dust collector 8 is activated (ON, a high voltage is applied between the electrodes), and the bypass passage 7 is opened by the air lock 10. Therefore, the air sucked in from the air inlet 2 only passes through the electric dust collector 8 which is performing electric dust collection operation, and is supplied to the room again from the exhaust port 3 via the bypass duct 7 (implementation (2) electric dust collection operation).

In step S3, if the amount of dust is greater than the second threshold value, step S5 is performed, and the control unit 13 compares the amount of dust measured in step S2 with the first threshold value. Here, if the amount of dust is greater than or equal to the first threshold value, step S6 is performed, the electric dust collector 8 is activated (ON, a high voltage is applied between the electrodes), and the bypass duct 7 is closed by the air lock 10. Therefore, the air sucked in from the air inlet 2 passes through the electric dust collector 8 and the HEPA filter 9 which are performing electric dust collection operation, and is supplied to the room again from the exhaust port 3 (implementation (1) dual dust collection operation).

In step S5, if the amount of dust is greater than the first threshold value, step S7 is performed, the electric dust collector 8 is turned off (OFF, no voltage is applied between the electrodes), and the bypass air passage 7 is closed by the air lock 10. Therefore, the air sucked in from the air inlet 2 passes through the electric dust collector 8 and the HEPA filter 9 that have not performed the electric dust collection operation, and is again supplied to the room from the exhaust port 3 (implementation (3) HEPA dust collection operation).

After the processing of step S4, step S6, and step S7, return to step S2 and repeat the subsequent control. Furthermore, the first threshold and the second threshold may be set in the control unit 13 at the time of shipment, or may be set by the user through the operation of the remote control 11. In addition, in step S7, since it is judged that the indoor air is very clean, the dust collection operation is unnecessary. Therefore, the electric dust collector 8 may be turned off, and the air brake 10 may be used to open the bypass passage 7.

In addition, the operation command to start the air cleaning operation is not only sent according to the button operation of the remote controller 11, but the amount of dust detected by the dust sensor 14 is the first threshold when the air cleaning machine 1 is in a stopped state. It can also be sent when it is above or above the second threshold, and the air cleaning operation is automatically transferred to ((1) dual dust collection operation or (2) electric dust collection operation).

According to the above control, when the indoor air is very dirty, even if the electric dust collector 8 with low dust collection capacity is used, the air can be sufficiently cleaned. Therefore, the electric dust collector 8 can be mainly operated. In addition, when the indoor air is relatively clean, the air can be cleaned sufficiently. To be cleaner, you can mainly make the HEPA filter 9 function.

In addition, when the indoor air is very dirty, it does not pass through the HEPA filter 9, and when the indoor air is relatively clean, it passes through the HEPA filter 9. Therefore, the amount of dust collected in the HEPA filter 9 can be reduced and the replacement of the HEPA filter 9 can be extended. cycle. Furthermore, in the double dust collection operation performed when the indoor air is relatively dirty, the HEPA filter 9 is arranged behind the electric dust collector 8 that is performing the electric dust collection operation, so the amount of dust collected in the HEPA filter 9 can be reduced. , Extend the update cycle of HEPA filter 9.

In addition, in the above description, although the example using FIGS. 4 and 5 is used, the same effect can be obtained by implementing the control shown in FIGS. 6 and 7. FIG. 6 shows a control example in which the operation mode of the air cleaner 1 is only the dual dust collection operation and the electric dust collection operation, and the operation mode is switched between these two modes. When the amount of dust detected by the dust sensor 14 is less than the second threshold, the control unit 13 sets the operation mode to dual dust collection operation, and the amount of dust detected by the dust sensor 14 is greater than the second threshold. In the case of, set the operation mode to electric dust collection operation. In this case, even in a clean air state where the amount of dust is less than the first threshold value, the HEPA dust collection operation is not performed as shown in Fig. 4, but the operation mode of continuous double dust collection operation. Therefore, the HEPA filter can be reduced. The amount of dust collected in 9 further extends the renewal cycle of the HEPA filter 9. Furthermore, the second threshold in FIG. 6 may not be the same value as the second threshold in FIG. 4.

FIG. 7 shows a control example in which the operation mode of the air cleaner 1 is only the electric dust collection operation and the HEPA dust collection operation, and the operation mode is switched between these two modes. The control unit 13 sets the operation mode to HEPA dust collection operation when the amount of dust detected by the dust sensor 14 is less than the first threshold value, and the amount of dust detected by the dust sensor 14 is the first When the threshold value is higher than the threshold value, the operation mode is the electric dust collection operation. In this case, only when the amount of dust is small (less than the first threshold value), dust collection by the HEPA filter 9 is performed, so the update cycle of the HEPA filter 9 can be further extended. Furthermore, the first threshold in FIG. 7 may not be the same value as the first threshold in FIG. 4. It may be the same as the second threshold value in FIG. 4, or may be an intermediate value between the first threshold value and the second threshold value in FIG. 4.

The example shown in Figure 4, Figure 6 and Figure 7 is that in order to trap the dust in the air and make it clean, according to the comparison of the amount of dust in the air and the threshold value, different methods are used (electric dust collector 8 and HEPA filter 9). ), but it is also possible to use the same method but different combinations as multiple air purifiers, or use the same method but different price combinations. For example, it can be used in a way that lengthens the renewal cycle of an expensive air cleaning device as much as possible.

In addition, in the case of using a combination of air purifiers with different capabilities, the following methods of use can be used. Fig. 8 shows an example of switching control of an air purifier equipped with a high-capacity air purifier and a low-capacity air purifier. It is assumed that a two-level threshold value (first threshold value, second threshold value) is set in advance for the amount of contaminant components D of the air. When the amount of contaminant components D of the air is large (D≧the second threshold value), control is performed so that the functions of both the high-performance air cleaning device and the low-power air cleaning device are effective. That is, the air purifier 1 runs at full speed to achieve rapid air purification. In addition, when the contaminant component amount D of the air is at a moderate level (the second threshold value>D≧the first threshold value), control is performed so that only the function of the high-capacity air cleaning device is effective, and the function of the low-capacity air cleaning device is invalid. That is, the air purifier 1 is operated at a medium speed. In addition, when the amount of contaminant components D of the air is small (first threshold value>D), control is performed so that the function of the high-performance air purifier is invalid, and only the function of the low-performance air purifier is effective. That is, the air cleaner 1 is operated at a low speed. The control unit 13, when the amount of dust is lower than the first threshold value, when the amount of dust is greater than or equal to the second threshold value, and when the amount of dust is greater than or equal to the first threshold value and lower than the second threshold value, functions as a high-performance air cleaning device The combination of the effective or ineffective function of the low-capacity air purifier is different.

Therefore, as in the case of FIGS. 4, 6 and 7, it is possible to perform an appropriate air cleaning operation in accordance with the use environmental conditions such as air contamination, and provide a comfortable air environment. Furthermore, in the above description, two air cleaning devices and one air brake 10 are used to switch the air cleaning method. However, the same switching can be performed with three or more air cleaning devices or two or more air brakes. control.

The air purifier 1 of the first embodiment is configured as described above, and therefore can perform an appropriate air purifying operation in accordance with the use environmental conditions such as the contamination of the air, and provide a comfortable air environment. In addition, with the configuration shown in Figs. 4, 6, and 7, for air purifiers such as the HEPA filter 9 that must be renewed, the renewal cycle can be extended by the operation of an appropriate operation mode, so that it is possible to reduce the amount of renewal. Homework and expenses.

In addition, the air purifier 1 of the first embodiment implements an air cleaning operation based on the amount of dust detected by the dust sensor 14 provided in the remote control 11, but the information on the amount of dust is not limited to the remote control 11 The dust sensor 14 may obtain the amount of dust detected by devices other than the air purifier 1 using a wired or wireless communication device.

Implementation form 2. The air purifier 1 in the first embodiment is configured to switch the operation mode performed by a plurality of air purifiers to perform an air purifying operation based on a comparison result of the amount of contaminant components in the indoor air and a threshold value set in advance. The air purifier 1 in the second embodiment is configured to switch the operation mode performed by a plurality of air purifiers in consideration of the elapsed time in the specific operation mode.

FIG. 9 is a flowchart showing an example of control of the air purifier according to Embodiment 2 of the present invention, and FIG. 10 is a flowchart showing another example of control of the air purifier according to Embodiment 2 of the present invention. First, an example of the control operation of the second embodiment will be described with reference to FIG. 9.

The control unit 13 of the air purifier 1 starts the air purifying operation in accordance with the operation command from the remote controller 11. First, in step S11 in FIG. 9, the operation of the blower 5 is started. Thereby, indoor air is sucked in from the air inlet 2. In addition, in step S12, the electric dust collecting operation timer provided in the control unit 13 is first reset to zero. In step S13, the dust sensor 14 measures the amount of dust in the indoor air. The control unit 13 compares the amount of dust measured in step S13 with the second threshold value (step S14). Here, if the amount of dust is greater than or equal to the second threshold value, step S15 is performed, and the counting of the electric dust collecting operation timer is performed. Subsequently, in step S16, it is determined whether the electric dust collecting operation timer is equal to or greater than a predetermined value (for example, 60 minutes). When the electric dust collection operation timer is less than the predetermined value, step S17 is performed, and the electric dust collection operation is performed by starting the electric dust collector 8 and opening the bypass passage 7. In the determination of step S16, when the electric dust collection operation timer is equal to or greater than the predetermined value, step S18 is performed, and the double dust collection operation is performed by starting the electric dust collector 8 and closing the bypass duct 7. That is, if the electric dust collection operation is continuously performed for a predetermined time (60 minutes) or more, and the amount of dust is still above the second threshold value, it is determined that the dust collection capacity of the electric dust collection operation is insufficient, and the operation is switched to the dual dust collection operation. Improve the dust collection capacity and reduce the amount of dust in the room.

In step S14, if the amount of dust is greater than the second threshold value, step S19 is performed to reset the electric dust collecting operation timer to zero. Subsequently, the control unit 13 compares the amount of dust measured in step S13 with the first threshold value (step S20). Here, when the amount of dust ≧ the first threshold value, step S18 is performed, and the double dust collecting operation is performed by starting the electric dust collector 8 and closing the bypass duct 7. In addition, in the determination of step S20, if the amount of dust is greater than the first threshold value, step S21 is performed, and the HEPA dust collection operation is performed by closing the electric dust collector 8 and closing the bypass duct 7. After the processing of step S17, step S18, and step S21, the control returns to step S13 to repeat the subsequent control.

The example shown in Fig. 9 performs the above-mentioned control. Therefore, when the air cleaning operation in an appropriate operation mode corresponding to the amount of dust in the air is executed, the air cannot be improved even if the selected operation mode is used for a certain period of time or longer. In the case of a medium amount of dust, switching to a higher performance air cleaning operation can further promote the indoor air cleaning operation. That is, FIG. 9 shows an example of control in the case where priority is given to air cleaning power.

Next, another example of the control operation of Embodiment 2 will be described with reference to FIG. 10. The control unit 13 of the air purifier 1 starts the air purifying operation in accordance with the operation command from the remote controller 11. First, in step S31, the operation of the blower 5 is started. Thereby, indoor air is sucked in from the air inlet 2. Subsequently, in step S32, the dual dust collecting operation timer provided in the control unit 13 is first reset to zero. In step S33, the dust sensor 14 measures the amount of dust in the indoor air. The control unit 13 compares the amount of dust measured in step S33 with the second threshold value (step S34). Here, if the amount of dust is greater than or equal to the second threshold value, the dual dust collecting operation timer is reset (step S35), and the electric dust collecting operation is performed by starting the electric dust collector 8 and opening the bypass duct 7 (step S36) .

In step S34, if the amount of dust is greater than the second threshold value, step S37 is performed to compare the amount of dust measured in step S33 with the first threshold value. Here, when the amount of dust is ≥ the first threshold value, step S38 is performed, and the time of the dual dust collection operation timer is performed. Subsequently, it is determined in step S39 whether or not the dual dust collecting operation timer is equal to or greater than a predetermined value (for example, 60 minutes). When the double dust collection operation timer is less than the predetermined value, step S40 is performed, and the double dust collection operation is performed by starting the electric dust collector 8 and closing the bypass duct 7. In the determination of step S39, if the electric dust collection operation timer is equal to or greater than the predetermined value, step S36 is performed, and the electric dust collection operation is performed by starting the electric dust collector 8 and opening the bypass duct 7. In other words, even if the dual dust collection operation is continued for a predetermined time (60 minutes) or more, if the amount of dust is still above the first threshold value, it is assumed that the state of the HEPA filter 9 with a large amount of dust continues, and there is a concern that Advance the update cycle of HEPA filter 9. Therefore, switching to the electric dust collecting operation performed by only the electric dust collector 8 reduces the use of the HEPA filter 9 for dust collection, thereby making it possible to extend the renewal cycle of the HEPA filter 9.

Furthermore, in the determination of step S37, if the amount of dust is greater than the first threshold value, the dual dust collection operation timer is reset (step S41), and step S42 is performed. The electric dust collector 8 is turned off and the bypass duct 7 is turned off. The closure of the implementation of HEPA dust collection operation. After the processes of step S36, step S40, and step S42, return to step S33 to repeat the control after step S33.

In the example shown in FIG. 10, the above-mentioned control is performed. Therefore, when the air cleaning operation in an appropriate operation mode corresponding to the amount of dust in the air is performed, even if the selected operation mode is used for a certain period of time or longer, the air When there is still a lot of dust in the air, the dust collection of the air cleaning device such as the HEPA filter 9 that needs to be updated can be suppressed, and the maintenance cycle can be extended. That is, FIG. 10 is a control example in which maintenance is reduced to achieve a situation where the user's ease of use is given priority.

The air purifier 1 of the second embodiment is configured as described above, and therefore, as in the first embodiment, it is possible to perform an appropriate air purifying operation corresponding to the use environmental conditions such as the contamination of the air, and provide a comfortable air environment. In addition, in addition to the contamination of the air, the operation duration is also used as a condition for selecting an appropriate air purifying operation, which can achieve an air purifying operation that promotes the corresponding situation and improves the ease of use for the user.

Implementation mode 3. The air purifier 1 in the first embodiment is configured to detect the amount of dirt components in the indoor air with a sensor provided in the remote control 11. The air purifier 1 in the third embodiment is configured such that the sensor is installed in the vicinity of the air inlet 2 in the main body casing 4. Fig. 11 is a cross-sectional configuration diagram of an air purifier according to Embodiment 3 of the present invention. First, the configuration of the air cleaner 1 in the third embodiment will be described.

In FIG. 11, a dust sensor 15 for detecting the amount of dust in the indoor air is provided near the air inlet 2 of the main body casing 4 of the air cleaner 1. The dust sensor 15 is connected to the control unit 13 via a signal line (not shown). The other structure is the same as that of the first embodiment (FIG. 1), so the description is omitted. Furthermore, although the remote controller 11 is not shown in FIG. 11, the remote controller 11 may or may not be present. In other words, the air purifier 1 operated by the remote controller 11 or the air purifier 1 having an operating unit on the main body without the remote controller 11 can achieve the effects shown in the third embodiment.

Next, the operation of the air cleaner 1 in the third embodiment will be described. The dust sensor 15 installed in the vicinity of the air inlet 2 opening toward the indoor space detects the amount of dust in the indoor air, and transmits the information to the control unit 13. The control unit 13 selects an appropriate operation mode (combination of plural air cleaning devices) based on the information of the amount of dust in the air transmitted from the dust sensor 15 and controls the blower 5, the electric dust collector 8, the air brake 10, and the like. In addition, the detailed description is the same as in the first embodiment, so it is omitted.

When the dust sensor 15 is located near the air inlet 2, it has the following advantage: it can directly monitor the contamination of the air actually processed by the air cleaning device. That is, when selecting and switching to an appropriate operation mode corresponding to the contamination of the air such as the amount of dust, directly monitoring the air to be treated can perform more accurate and appropriate control of the treatment target.

However, when the air cleaner 1 is stopped (the blower 5 is stopped), the air in the room moves less, and the air stays near the dust sensor 15, the amount of dust detected by the dust sensor 15 and the location of the user will appear. When the value of the amount of dust in the vicinity of the location is different. At this time, it may happen that, for example, the air near the user's location is quite dirty, but the air purifier 1 is still in a state where the operation is stopped. In contrast, even when the operation of the air cleaner 1 is stopped (the blower 5 is stopped), the control unit 13 causes the blower 5 to periodically operate weakly (for example, for a period of only 3 minutes out of 30 minutes), and the dust sensor The air flow from the room is generated near the device 15 so that the state of the air near the user can be monitored. Thereby, the air purifier 1 can perform an operation start operation based on the air environment of the user's location.

According to the above configuration, the air purifier 1 can select the most appropriate operation mode and switch operation based on the dust sensor 15 regardless of whether the remote controller 11 is present or not. In addition, since it directly monitors the contamination of the air that is actually cleaned, it is possible to more accurately switch the appropriate operation mode. In addition, even in the case where the dust sensor 15 is installed on the side of the main body away from the user, by periodically operating the blower 5 to inhale and monitor the air near the user, it is possible to respond to the contamination of the air near the user. Start of proper air cleaning operation.

The air purifier 1 of the third embodiment is configured as described above, and therefore, as in the first embodiment, it can perform an appropriate air purifying operation corresponding to the use environmental conditions such as the contamination of the air, and provide a comfortable air environment. In addition, switching of an appropriate operation mode of the air cleaner 1 can be performed more accurately.

Furthermore, when the remote control 11 is also equipped with a dust sensor 14, when the air purifier 1 is in a stopped state, it can be performed based on the amount of dust detected by the dust sensor 14 on the remote control 11 side. The operation starts to move. Thereby, it is not necessary to periodically operate the blower 5 weakly (for example, only for 3 minutes out of 30 minutes), and power consumption can be suppressed. In addition, it is also possible for the user to set from the remote control 11, which of the dust sensor 14 provided in the remote control 11 and the dust sensor 15 provided in the vicinity of the air inlet 2 in the main body casing 4 is used for operation Mode switching.

In addition, the air purifier 1 described in the third embodiment is configured to take in indoor air and blow it into the room after the air is cleaned. It can also be applied to an air purifier that takes in outdoor air and blows it into the room after the air is cleaned. Gas machine. For example, in the vicinity of an urban arterial road, the following situation can be imagined: the amount of dust is high in the time zone with high traffic volume during the day, and the amount of dust is small in the time zone with low traffic volume at night. In the ventilating equipment used in this environment, as in the first embodiment, it is possible to perform an appropriate air cleaning operation corresponding to the use environment conditions such as air contamination, and provide a comfortable air environment. In addition, for air purifiers such as the HEPA filter 9 that must be renewed, the renewal cycle can be extended by the operation of an appropriate operation mode, so the work and cost accompanying renewal can be reduced.

Implementation mode 4. The air purifier 1 in Embodiments 1 to 3 is configured to detect the amount of dirt components in the indoor air with a sensor to select an appropriate operation mode. The air purifier 1 in the fourth embodiment is configured to switch the solid-line operation mode without using a sensor. Fig. 12 is a cross-sectional configuration diagram of an air cleaner according to Embodiment 4 of the present invention, and Fig. 13 is a flowchart showing the control thereof.

Based on FIG. 12, the structure of the air cleaner 1 of Embodiment 4 is demonstrated. The point that it does not have the remote controller 11 of the air purifier 1 of the first to third embodiments or the dust sensors 14, 15 provided in the main body casing 4 is different, and the others have the same structure.

Next, an example of the control operation of Embodiment 4 will be described based on FIG. 13. The control unit 13 of the air purifier 1 starts the air purifying operation in accordance with the operation command from the remote controller 11. First, in step S51 in FIG. 13, the operation of the blower 5 is started. Thereby, indoor air is sucked in from the air inlet 2. In addition, in step S52, the air purging operation timer provided in the control unit 13 is first reset to zero.

Subsequently, in step S53, the air purifying operation timer is counted, and in step S54, it is determined whether the air purifying operation timer is greater than or equal to the predetermined value T1 (whether or not the time for performing the air purifying operation has passed T1). When the air cleaning operation timer is less than the predetermined value T1, step S55 is performed, and the electric dust collecting operation is performed by the activation of the electric dust collector 8 and the opening of the bypass duct 7.

In the determination of step S54, if the air purifying operation timer is greater than or equal to the predetermined value T1, step S56 is performed to determine whether the air purifying operation timer is greater than or equal to the predetermined value T2 (whether or not the time for performing the air purifying operation has passed T2). When the air cleaning operation timer is less than the predetermined value T2, step S57 is performed, and the double dust collecting operation is performed by starting the electric dust collector 8 and closing the bypass duct 7.

In the determination of step S56, if the air purifying operation timer is greater than or equal to the predetermined value T2, step S58 is performed to determine whether the air purifying operation timer is greater than or equal to the predetermined value T3 (whether or not the time for performing the air purifying operation has passed T3). When the air cleaning operation timer is less than the predetermined value T3, step S59 is performed, and the HEPA dust collecting operation is performed by closing the electric dust collector 8 and closing the bypass duct 7.

After the processing of step S55, step S57, and step S59, return to step S53 and repeat the subsequent control. In the determination of step S58, if the air purifying operation timer is equal to or greater than the predetermined value T3, step S60 is performed to stop the blower 5 (the operation of the air purifier 1 is stopped).

According to the above configuration, the control described later is executed: every time a specific time elapses after the operation of the air cleaner 1 starts, the operation mode is sequentially switched in the order of electric dust collection operation, dual dust collection operation, and HEPA dust collection operation, and finally stopped. In other words, it is assumed in advance how much air pollution can be improved by continuing a certain operation mode for a specific period of time, and the control for switching the operation mode based on the actual operation time is executed.

The air purifier 1 of the fourth embodiment is configured as described above, and therefore, as in the first embodiment, it is possible to perform an appropriate air purifying operation corresponding to the use environment conditions such as the contamination of the air, and provide a comfortable air environment. In addition, since the improvement of air contamination is estimated by the operating time, it is possible to provide an inexpensive air purifier 1 that does not require the dust sensors 14, 15. Furthermore, even the air purifier 1 equipped with dust sensors 14, 15 can be operated by a remote control, etc., to select based on the amount of dirt components detected by the sensor and the operating time. Perform control to switch the operation mode.

Implementation mode 5. The air cleaner 1 in Embodiments 1 to 4 is configured to target dust as a contaminant component in indoor air, and use an electric dust collector 8 and a HEPA filter 9 for dust collection as an air cleaner device. The air purifier system in Embodiment 5 is configured to target odor as a contaminant component in indoor air, and use a deodorizing filter or the like as an air purifier. Fig. 14 is a cross-sectional configuration diagram of an air purifier according to Embodiment 5 of the present invention.

First, the structure of the air cleaner 100 of Embodiment 5 is demonstrated using FIG. 14. FIG. In FIG. 14, the air purifier 100 has a main body casing 4, which is provided with an air inlet 2 for sucking in indoor air and an exhaust port 3 for supplying air cleaned by the air purifier into the room. The casing 4 includes a ventilation passage 6 connecting the air supply port 2 and the exhaust port 3 and a blower 5 composed of a fan 5 a and a motor 5 b arranged in the ventilation passage 6. In addition, in the ventilation path 6, on the downstream side of the fan 5a when viewed from the air supply port 2, an ozone generator 108 (which generates ozone for deodorizing the inhaled air) as a first air cleaning device is arranged. The air cleaning device of the ozone generator 108), and on the further downstream side of the ozone generator 108, a deodorizing filter 109 as a second air cleaning device (which is an air cleaning device that deodorizes the air that has passed through the ozone generator 108 Device). In addition, there is also provided a bypass passage 7 for directing the air that has passed through the ozone generator 108 to the exhaust port 3 without passing through the deodorizing filter 109, and a switch to allow the air that has passed through the ozone generator 108 to pass through the deodorization filter 109. The odor filter 109 side or the air lock 10 on the side of the bypass passage 7 is passed. Furthermore, there is a control unit 13 that controls the actions of the blower 5, the ozone generator 108, and the air brake 10, and the remote controller 11 is connected to the control unit 13 through a communication line 12. The remote controller 11 is equipped with an odor sensor 114 that detects the amount of odor components in the indoor air, and is based on the button operation of the remote controller 11 (start or stop of the air cleaning operation, etc.) and the odor sensor The operation command of the detected amount of odorous components in the indoor air 114 is sent to the control unit 13.

Furthermore, in FIG. 14, the solid arrow A indicates that the air flow from the air supply port 2 through the ozone generator 108 and the deodorizing filter 109 and discharged from the exhaust port 3 by the blower 5, the dotted arrow B It shows the air flow that passes through the bypass passage 7 and is discharged from the exhaust port 3 without passing through the deodorizing filter 109.

The ozone generator 108 applies an alternating high voltage between electrodes sandwiching a dielectric body such as glass, and dissociates or excites oxygen between the electrodes to change it into ozone (O ₃ ). Because ozone is very unstable and highly reactive, it reacts with bacteria and odor-causing molecules, and ozone itself returns to oxygen, and oxidatively decomposes the bacteria and odor-causing molecules. That is, by operating the ozone generator 108 (applying an alternating high voltage between the electrodes), it is possible to perform sterilization and deodorization in the air.

The deodorizing filter 109 absorbs odor-causing molecules to remove them. The deodorizing filter 109 does not decompose the odor-causing molecules, so the amount that it can absorb is limited. When the odor-causing molecules adsorbed by it increase, the deodorizing filter 109 itself will generate malodors. Therefore, it is necessary to update the deodorizing filter 109 regularly.

Next, the operation of the air cleaner 100 in the fifth embodiment will be described, but the operation is basically the same as that of the first embodiment. That is, the control unit 13 compares the amount of odor components in the indoor air detected by the odor sensor 114 with a preset threshold value, and based on the comparison result, follows the control of the ozone generator 108 (to the electrode The combination of the application of the AC high voltage (starting and closing) and the switching control of the air brake 10 determines the operation mode of the air cleaner 100. For example, the operation mode includes the following three types. (1) Deodorization using ozone generator 108 and deodorization filter 109 (double deodorization operation) (2) Deodorization using only the ozone generator 108 (ozone deodorization operation) (3) Deodorization using only deodorization filter 109 (filter deodorization operation)

Next, simply show the characteristics of each operation mode. (1) Double deodorization operation Operate the ozone generator 108 (applying AC high voltage between the electrodes) to generate ozone and thereby deodorize, and then close the bypass passage 7 with the air lock 10, thereby also deodorizing with the deodorizing filter 109 (ozone deodorization) Function: effective, filter deodorization function: effective). By this, a very high deodorizing effect is obtained. In addition, allowing the air after ozone deodorization to pass through the deodorizing filter 109 can reduce the adsorption amount of odor molecules in the deodorizing filter 109, and therefore, it is possible to extend the renewal period of the deodorizing filter 109. (2) Ozone deodorization operation Operate the ozone generator 108 (apply an AC high voltage between the electrodes) to generate ozone and deodorize it. The air lock 10 opens the bypass passage 7 so that the air after ozone deodorization does not pass through the deodorization filter 109. And through the side of the side ventilation path 7 (ozone deodorization function: effective, filter deodorization function: ineffective). Therefore, the deodorization filter 109 is not used for deodorization. Thereby, the deodorization effect is lower than that of the double deodorization operation, but the adsorption of odor molecules to the deodorization filter 109 can be suppressed, and therefore the renewal period of the deodorization filter 109 can be extended. (3) Filter deodorization operation The ozone generator 108 is stopped (no AC high voltage is applied between the electrodes), so that ozone is not generated for deodorization, but the bypass ventilation path 7 is closed by the air lock 10, so that the deodorization filter 109 will just pass through the ozone generator 108 air deodorization (ozone deodorization function: invalid, filter deodorization function: effective). Thereby, the deodorization effect is inferior to the double deodorization operation, but by stopping the ozone generator 108, power consumption can be reduced.

The air purifier 100 of the fifth embodiment is configured as described above, and therefore, as in the first embodiment, it is possible to perform an appropriate air purifying operation corresponding to the use environmental conditions such as the contamination of the air, and provide a comfortable air environment. In addition, for an air cleaning device that must be updated such as the deodorizing filter 109, the update cycle can be extended by the operation in an appropriate operation mode, and therefore, the work and cost associated with the update can be reduced.

Furthermore, the configuration or control of Embodiments 2 to 4 can also be applied to the configuration of Embodiment 5. In addition, the examples of dust collection in Embodiments 1 to 4 and the example of deodorization in Embodiment 5 are shown. However, these configurations are not limited to dust and odor, and can also be applied to carry to remove other chemical substances or PM2.5. And other products of various air purifiers.

Embodiment 6. The air purifiers 1, 100 in Embodiments 1 to 5 are configured to perform power control of the air purifier and control of the air passage of the air purifier by the air brake 10 and the bypass passage 7 to switch the operation mode. To perform proper air cleaning operation. The air purifier 200 in the sixth embodiment is configured as a device that performs an appropriate air purifying operation without providing the air brake 10 and the bypass duct 7. Fig. 15 is a cross-sectional configuration diagram of an air purifier according to Embodiment 6 of the present invention.

First, referring to Fig. 15, the configuration of the air cleaner 200 in the sixth embodiment will be described. In FIG. 15, the air purifier 200 has a main body casing 4, which is provided with an air inlet 2 for sucking indoor air and an exhaust port 3 for supplying air cleaned by the air purifier to the room. The casing 4 includes a ventilation passage 6 connecting the air supply port 2 and the exhaust port 3 and a blower 5 composed of a fan 5 a and a motor 5 b arranged in the ventilation passage 6. In addition, in the ventilation path 6, on the downstream side of the fan 5a when viewed from the air supply port 2, an electric dust collector 8 that electrically collects the sucked air is arranged, and further downstream of the electric dust collector 8, a The HEPA filter 9 collects dust by the air of the electric dust collector 8. In addition, a control unit 13 that controls the operation of the blower 5 and the electric dust collector 8 is provided, and the remote controller 11 is connected to the control unit 13 through a communication line 12. The remote control 11 is equipped with a dust sensor 14 that detects the amount of dust in the indoor air. The indoor air obtained by the remote control 11 (start or stop of the air cleaning operation, etc.) and the dust sensor 14 The operation command of the amount of dust is transmitted to the control unit 13.

Next, an example of the control operation of the sixth embodiment will be described. The control unit 13 of the air cleaner 200, based on the amount of dust in the indoor air detected by the dust sensor 14, controls the power supply of the electric dust collector 8 (starting and shutting down the application of high voltage to the electrodes), thereby determining the air cleaner 1 operation mode. For example, there are two types of operation modes as shown below. (1) Use electric dust collector 8 and HEPA filter 9 to collect dust (dual dust collection operation) (2) Use only HEPA filter 9 to collect dust (HEPA dust collection operation)

As mentioned above, the dual dust collection operation can obtain a very high dust collection rate, reduce the amount of dust collected by the HEPA filter 9 and prolong the renewal cycle of the HEPA filter 9. In addition, the HEPA dust collection operation has a dust collection rate slightly inferior to that of the dual dust collection operation, but can also obtain almost the same high dust collection rate, and because electric dust collection is not performed, power consumption can be reduced.

The air purifier 200 of the sixth embodiment is configured as described above, and therefore, as in the first embodiment, it can perform an appropriate air purifying operation in accordance with the use environmental conditions such as air contamination, and provide a comfortable air environment. In addition, for air purifiers such as the HEPA filter 9 that must be renewed, the renewal cycle can be extended by the operation in an appropriate operation mode, and therefore, the work and costs associated with renewal can be reduced.

Furthermore, a configuration in which the dust sensor 14 is not provided may be used as a modification of the sixth embodiment. That is, the air cleaner 200 always operates the electric dust collector 8 during the air cleaning operation (a high voltage is applied between the electrodes). Thereby, the air sucked in from the air inlet 2 is collected by the electric dust collector 8 and then collected by the HEPA filter 9. That is, the double dust collection operation is always performed during the air cleaning operation. Because of the dual dust collection operation, a very high dust collection rate can be obtained, and the dust collection amount of the HEPA filter 9 can be reduced, which can extend the renewal cycle of the HEPA filter 9. That is, the air cleaning operation with high dust collection rate provides a comfortable air environment and can reduce maintenance work.

The functions of the control unit 13 in the air cleaners 1, 100, and 200 of Embodiments 1 to 6 are realized by processing circuits. The air cleaners 1, 100, and 200 have processing circuits for controlling the operation of the air blowing device. The processing circuit can be dedicated hardware or a processor that executes programs stored in memory.

Fig. 16 is a configuration diagram of the control unit 13 in the case where the functions of the control unit 13 in the air cleaners 1, 100, 200 of the first to sixth embodiments are realized by dedicated hardware. The processing circuit 31 as a dedicated hardware is a single circuit, a composite circuit, a programming processor, a parallel programming processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof.

Fig. 17 is a configuration diagram of the control section 13 in the case where the functions of the control section 13 in the air cleaners 1, 100, and 200 of the first to sixth embodiments are realized by a processor that executes a program stored in a memory. The processor 32 is a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor). The functions of the control unit 13 are implemented by the processor 32, software, firmware, or a combination of software and firmware. The software or firmware is recorded as a program and stored in the memory 33. The memory 33 is non-volatile such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (registered trademark) (Electrically Erasable Programmable Read Only Memory), etc. Or built-in memory such as volatile semiconductor memory.

Furthermore, part of the function of the control unit 13 is realized by dedicated hardware, and other parts of the function of the control unit 13 may be realized by software or firmware. In this way, the function of the control unit 13 can be realized by hardware, software, firmware, or a combination thereof.

The configuration shown in the above embodiment shows an example of the content of the present invention, and can also be combined with other known technologies, and a part of the configuration can be omitted or changed without departing from the gist of the present invention.

1,100,200‧‧‧Air Purifier 2‧‧‧Give the air 3‧‧‧Exhaust port 4‧‧‧Body shell 5‧‧‧Blower 5a‧‧‧Fan 5b‧‧‧Motor 6‧‧‧Ventilation Road 7‧‧‧side ventilation road 8‧‧‧Electric dust collector 9‧‧‧HEPA filter 10‧‧‧Airlock 11‧‧‧Remote control 12‧‧‧Communication line 13‧‧‧Control Department 14‧‧‧Dust Sensor 31‧‧‧Processing circuit 32‧‧‧Processor 33‧‧‧Memory 108‧‧‧Ozone Generator 109‧‧‧Deodorizing filter 114‧‧‧Odor Sensor

[Fig. 1] A cross-sectional configuration diagram of the air purifier according to Embodiment 1 of the present invention. [Fig. 2] A diagram showing the operating state of the air purifier according to Embodiment 1 of the present invention when the bypass duct is closed. [Fig. 3] A diagram showing the operating state of the air purifier according to Embodiment 1 of the present invention when the bypass passage is open. Fig. 4 is a diagram showing an example of the function switching of the air purifier in accordance with the amount of air pollution in the air purifier according to the first embodiment of the present invention. [Fig. 5] A flowchart showing an example of control of the air purifier according to Embodiment 1 of the present invention. [Fig. 6] Fig. 6 is a diagram showing another example of the function switching of the air purifier in accordance with the amount of air contamination of the air purifier according to the first embodiment of the present invention. [Fig. 7] Fig. 7 is a diagram showing still another example of the function switching of the air purifier in accordance with the amount of air contamination of the air purifier according to the first embodiment of the present invention. [Fig. 8] A diagram showing another example of the function switching of the air purifier in accordance with the amount of air contamination of the air purifier according to Embodiment 1 of the present invention. [Fig. 9] A flowchart showing an example of control of the air cleaner according to Embodiment 2 of the present invention. [Fig. 10] A flowchart showing another example of control of the air purifier according to Embodiment 2 of the present invention. [Fig. 11] A cross-sectional configuration diagram of an air purifier according to Embodiment 3 of the present invention. [Fig. 12] A cross-sectional configuration diagram of an air purifier according to Embodiment 4 of the present invention. [Fig. 13] A flowchart showing an example of control of the air cleaner according to Embodiment 4 of the present invention. [Fig. 14] A cross-sectional configuration diagram of an air purifier according to Embodiment 5 of the present invention. [Fig. 15] A cross-sectional configuration diagram of an air purifier according to Embodiment 6 of the present invention. [Fig. 16] A configuration diagram of the control unit in the case where the function of the control unit in the air purifiers of Embodiments 1 to 6 is realized by dedicated hardware. [Fig. 17] A configuration diagram of the control unit in the case where the function of the control unit in the air purifiers of Embodiments 1 to 6 is realized by a processor that executes a program stored in a memory.

1‧‧‧Air Purifier

2‧‧‧Give the air

3‧‧‧Exhaust port

4‧‧‧Body shell

5‧‧‧Blower

5a‧‧‧Fan

5b‧‧‧Motor

6‧‧‧Ventilation Road

7‧‧‧side ventilation road

8‧‧‧Electric dust collector

9‧‧‧HEPA filter

10‧‧‧Airlock

11‧‧‧Remote control

12‧‧‧Communication line

13‧‧‧Control Department

14‧‧‧Dust Sensor

Claims (1)

An air purifier, comprising: a main body shell with: an air supply port, an exhaust port, and a ventilation path connecting the air supply port and the exhaust port; and a blowing device arranged on the main body shell to remove indoor air from the The air inlet is sucked in and discharged from the exhaust port; the electric dust collector is installed in the ventilation path; and the HEPA filter is installed in the ventilation path on the exhaust port side than the electric dust collector; the control device is based on specific conditions , Make the functions of the electric dust collector and the HEPA filter respectively effective or ineffective; the control device is set when the amount of pollutant components in the air is higher than the first threshold value and higher than the second threshold value higher than the first threshold value In the case of, the function of the HEPA filter is invalidated, and when the amount of the air contaminant component is lower than the second threshold value, the function of the HEPA filter is validated.

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