JP2022122645A - Air cleaner - Google Patents

Abstract

To provide an air cleaner for deactivating an object contained in a gas by a simple structure inexpensively, and having small power consumption.SOLUTION: An air cleaner 1 includes: a suction part 2 for sucking a gas containing an object; a cyclone chamber 3 for collecting the object contained in the gas by revolving the sucked gas; a fun 4 for forming a gas stream toward the cyclone chamber 3 from the suction part 2; ultraviolet ray-irradiating means 5 having wavelengths for deactivating the object in the cyclone chamber; a discharge part 6 for discharging the gas from the cyclone chamber; air flow control means 7 for controlling an air quantity of the fun 4; and light quantity control means 8 for controlling a light quantity of the ultraviolet ray-irradiating means 5.SELECTED DRAWING: Figure 1

Description

The present invention relates to air cleaners.

Conventionally, there is known a fluid sterilization device that sterilizes fluid flowing through a flow path by irradiating it with ultraviolet rays. (For example, see Patent Document 1) The fluid sterilization device of Patent Document 1 is configured so that the fluid is irradiated with ultraviolet rays for a longer time by extending the flow path in a complicated shape relative to the size of the device. It is Also, a configuration has been proposed in which ultraviolet rays are applied also in the cyclone chamber.
The air purifier described in Patent Document 2 proposes a configuration in which the swirling air in the cyclone collecting portion is irradiated with ultraviolet rays.
The gas purifier described in Patent Document 3 proposes a configuration in which contaminants are purified by a photocatalyst using ultraviolet rays in a cyclone-shaped chamber.

JP 2020-175258 JP 2019-120436 Special table 2014-522317

The fluid sterilization device of Patent Document 1 described above has a structure in which the flow path between the suction part that sucks the fluid and the discharge part that discharges the fluid is set to be non-linear and the distance is set long, and ultraviolet rays are continuously irradiated during that time to perform sterilization. It has become.
However, this configuration has the problem of increasing the size and weight of the apparatus in order to realize a labyrinth-like flow path. In addition, there is a problem that the flow path is complicated and the pressure loss is large, and the fan is required to have a large maximum static pressure.
On the other hand, in order to reduce the number of ultraviolet lamps, a method has been proposed in which the wall of the channel is made of an ultraviolet-transmitting material. There is a problem that the ultraviolet light transmitted through a plurality of sheets is greatly attenuated due to the transmittance thereof, and the required amount of light cannot be obtained.
In addition, the cyclone chamber, which is intended for dust collection of foreign matter, cannot sufficiently sterilize toxic objects, and there is a problem that power consumption increases due to continuous ultraviolet irradiation in the cyclone chamber.

The air purifier of Patent Document 2 mentioned above has been proposed to irradiate ultraviolet rays onto the swirling air in the cyclone collection unit. There is a problem that the power consumption becomes large because it is performed at the same time.

The gas purifier of Patent Document 3 described above has been proposed to purify contaminants by a photocatalyst using ultraviolet rays in a cyclone-shaped chamber. there is a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air purifier which has a simple structure, is inexpensive, inactivates objects contained in gas, and consumes little power. do.

The air purifier of the present invention includes an inhalation section for inhaling gas containing an object, a cyclone chamber for swirling the inhaled gas to collect the object contained in the gas, and a direction from the inhalation section to the cyclone chamber. A fan for forming a gas flow, an ultraviolet irradiation means having a wavelength for inactivating an object in the cyclone chamber, a discharge section for discharging the gas from the cyclone chamber, and an air volume control means for controlling the air volume of the fan. and light amount control means for controlling the light amount of the ultraviolet irradiation means.

Further, in the air purifier of the present invention, the light amount control means performs ultraviolet irradiation control of one or both of the amount of ultraviolet light necessary for inactivating the object and the irradiation period, and the ultraviolet irradiation control is performed for a certain period of time. It is characterized by repeating every interval.

Further, in the air cleaner of the present invention, the light quantity control means controls at least the light quantity of ultraviolet rays necessary for deactivating the object, the irradiation period, and the ultraviolet irradiation control according to the air quantity controlled by the air quantity control means. It is characterized by changing the time interval for repeating one.

Further, in the air cleaner of the present invention, the air volume control means stops or rotates the fan at a low speed during the ultraviolet irradiation period by the ultraviolet irradiation means.

Further, the air cleaner of the present invention further comprises at least one sensor selected from a temperature sensor, a humidity sensor, a noise sensor, an illuminance sensor, a human sensor, and a biosensor. It is characterized by controlling the ultraviolet irradiation means.

Further, the air purifier of the present invention includes operation mode instruction means for instructing an operation mode, a first operation mode that prioritizes inactivation of objects, a second operation mode that prioritizes quietness, and a low power consumption mode. At least two or more operation modes among a third operation mode that prioritizes electric power, a fourth operation mode that operates fully automatically, and operation mode selection means for selecting one of the operation modes. It is characterized by

Further, the air purifier of the present invention is characterized in that the fully automatic fourth operation mode is controlled by a neural network.

Further, the air purifier of the present invention includes either or both of a timer for turning off the power after a specified time and a timer for turning on the power in one of the operation modes specified after the specified time, The operation mode instruction means is characterized by being controlled by the timer.

Further, the air cleaner of the present invention includes at least one sensor selected from an acceleration sensor, a gyro sensor, and a geomagnetic sensor, and based on the detection of the sensor, the air volume control means emergency stops the fan and controls the amount of light. The control means is characterized in that it makes an emergency stop of the ultraviolet irradiation means.

Further, the air cleaner of the present invention is characterized in that the ultraviolet irradiation means is arranged in the lower part of the cyclone chamber so as to irradiate in the direction of the discharge section.

Further, the air cleaner of the present invention is characterized by further comprising a heat radiating means for radiating heat generated from the ultraviolet irradiation means, wherein the fan radiates heat from the heat radiating means.

Further, the air cleaner of the present invention is characterized in that an outer wall portion of the cyclone chamber constitutes a part of a gas passage connecting the suction portion and the cyclone chamber.

Further, in the air purifier of the present invention, a gas flow path connecting the suction section and the cyclone chamber is helical.

Further, the air cleaner of the present invention is characterized in that the direction of rotation of the helical gas passage and the direction of rotation of the gas in the cyclone chamber are the same.

Moreover, the air cleaner of the present invention is characterized in that the inner wall of the cyclone chamber is made of an ultraviolet reflecting material.

ADVANTAGE OF THE INVENTION According to this invention, while inactivating the target object contained in gas with a simple structure and low cost, an air cleaner with small power consumption can be provided.

It is a figure which shows an example of the air cleaner of this invention. 4 is a timing diagram showing states of ultraviolet irradiation means; It is a table|surface which shows the operation example of an ultraviolet-ray irradiation means. 4 is a timing diagram showing fan states; It is a figure which shows an example of the air cleaner of this invention. It is a figure which shows an example of the air cleaner of this invention. 1 is a schematic diagram showing a configuration example of a neural network; FIG. It is a figure which shows an example of the air cleaner of this invention. It is a figure which shows an example of the air cleaner of this invention. It is a figure which shows an example of the air cleaner of this invention. It is a figure which shows an example of the air cleaner of this invention. It is a figure which shows an example of the air cleaner of this invention. FIG. 4 is a diagram showing a gas flow path of the air cleaner of the present invention;

<First Embodiment>
A first embodiment of the air cleaner of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of the air purifier of the present invention.
The air purifier 1 includes an inhalation part 2 that inhales gas containing an object, a cyclone chamber 3 that swirls the inhaled gas to collect the object contained in the gas, and the inhalation part that goes to the cyclone chamber. A fan 4 for forming a gas flow, an ultraviolet irradiation means 5 having a wavelength for inactivating an object in the cyclone chamber, an exhaust section 6 for discharging the gas from the cyclone chamber, and an air volume for controlling the air volume of the fan. It comprises control means 7 and light amount control means 8 for controlling the light amount of the ultraviolet irradiation means.
Here, the target refers to pathogens such as viruses and bacteria, and objects that move together with gas such as droplets and aerosols containing them.

The air volume control means 7 operates the fan 4, adjusts the air volume, and stops the operation. The gas sucked from the intake section 2 by the fan 4 is sent to the cyclone chamber 3, and the target object is collected in the gas flowing into the cyclone chamber 3 by the whirling air current, and the air separated from the target object is discharged from the discharge section 6. Ejected. The light amount control means 8 turns on, adjusts the light amount of, and stops the ultraviolet irradiation means 5 according to the collected object. According to such a configuration, it is possible to irradiate ultraviolet rays necessary for inactivation according to the collected object, so that it is possible to achieve both reliable inactivation of the object and low power consumption. can.

Next, an example of control of the ultraviolet irradiation means 5 by the light quantity control means 8 will be described using the timing diagram of FIG.
The effect of deactivating an object by ultraviolet rays is evaluated by the energy per unit area obtained by multiplying the illuminance on the surface of the object by the irradiation time. For example, when the ultraviolet irradiation means 5 is configured using UV-LEDs, parameters such as the peak wavelength, light output, directivity, the shape of the cyclone chamber 3, the number of UV-LEDs to be arranged, etc. Set the UV irradiation time.

In FIG. 2 , the light amount control signal is an output signal from the light amount control means 8 and is input to the ultraviolet irradiation means 5 . The ultraviolet irradiation means 5 is controlled so as to irradiate ultraviolet rays during a period t1 when the light amount control signal is at a high level, and to stop ultraviolet irradiation during a period t2 when the light amount control signal is at a low level.
Here, as an example, if the ultraviolet irradiation time required for deactivation is t1, and control is performed so that the irradiation and stop of ultraviolet irradiation are repeated at a certain ultraviolet lighting period t3, the power consumption of the ultraviolet irradiation means is constantly turned on. Compared to the case, it can be reduced to t1/t3.

According to such control, it is possible to achieve both reliable inactivation of the object and further reduction in power consumption by periodically performing ultraviolet irradiation necessary for deactivation.
Here, as a method of controlling the ultraviolet irradiation means 5, a method using a light amount control signal is shown, but other wired or wireless communication may be used, and the method is not limited to this control signal.

Next, the operation of the ultraviolet irradiation means 5 when the air volume control means 7 is changed will be described using the table of FIG.
Air purifiers generally have a function of adjusting the air volume. When adjusting the air volume in this embodiment, the air volume control means 7 changes the amount of gas sucked from the suction portion 2 . Here, the cyclone chamber 3 collects the object by a whirling air current, and the speed of the whirling air current in the cyclone chamber 3 changes depending on the amount of air taken in from the suction unit 2 .
In general, in the separation of fine particles by a cyclone, increasing the velocity of the air stream produces a large centrifugal force, resulting in a smaller separation diameter and a larger amount of fine particles taken in. Conversely, if the air velocity is slowed down, the separation diameter will increase, so some objects will be discharged without being captured, but the air velocity will be slow, so the time they stay in the cyclone chamber will be longer.

Therefore, in this embodiment, the following control is performed.
When the air volume is increased, more objects are collected, so the inactivation is ensured by increasing the light intensity of the ultraviolet irradiating means 5, prolonging the irradiation period, or both.
Further, when the air volume is reduced, the target remains in the cyclone chamber for a long time, but some of the target is discharged from the discharge section 6 . Therefore, the irradiation time of the ultraviolet irradiating means 5 may be lengthened, the ultraviolet lighting cycle may be shortened, or the ultraviolet ray may be lit all the time. Furthermore, it is also preferable to increase the amount of light.

According to such control, even when the air volume of the air purifier 1 is adjusted, the ultraviolet light is irradiated with an appropriate amount of ultraviolet light, irradiation period, and ultraviolet lighting cycle according to each air volume. A reliable inactivation can be performed.
The table in FIG. 3 shows an example of such control, but the intensity of the ultraviolet rays, the irradiation time, and the ultraviolet light-up period may not necessarily be as shown in this table. , the optimal UV irradiation method for inactivating the object may be different.

Next, using the timing diagram of FIG. 4, the operation of the air volume control means 7 during the UV irradiation period by the UV irradiation means 5 will be described.
In FIG. 4, the air volume control signal is an internal signal of the air volume control means 7, the fan 4 is operated during the period t2 when the air volume control signal is high level, and the fan 4 is stopped during the period t1 when the air volume control signal is low level, or It is controlled to rotate at low speed.
Here, the air volume control signal is a signal whose logic is inverted with respect to the light volume control signal. That is, the object is collected during the fan operation period t2, and the object is deactivated during the ultraviolet irradiation period t1.

According to such control, the operation of the fan 4 is stopped or rotated at a low speed during the UV irradiation period. can be reduced to
Moreover, since the peak current of the sum of the ultraviolet ray irradiation means 5 and the fan 4 can be reduced, it is suitable for driving with a battery and the operation time with the battery can be lengthened.
Here, the air volume control signal as an internal signal operates the fan 4 at a high level and stops the fan 4 or rotates at a low speed at a low level. Other control methods such as operating the fan 4 at the high level and stopping the fan 4 at the high level or rotating the fan at a low speed may be used.

<Second embodiment>
A second embodiment of the air cleaner of the present invention will be described below with reference to the drawings. FIG. 5 is a diagram showing an example of the air purifier of the present invention.
The difference from the first embodiment is that the air purifier 1a further includes at least one sensor among a temperature sensor 9, a humidity sensor 10, a noise sensor 11, an illuminance sensor 12, a human sensor 13, and a biosensor 14, The difference is that the fan 4 and the ultraviolet irradiation means 5 are controlled based on the sensor information.

It is generally known that pathogens such as viruses and bacteria become more viable when the temperature and humidity are low, and droplets and aerosols are more likely to disperse when the humidity is low. That is, by controlling the light intensity of the ultraviolet irradiation means 5 and the air volume of the fan 4 based on the sensor information of the temperature sensor 9 and/or the humidity sensor 10, viruses and bacteria can be detected more reliably than in the first embodiment. can be inactivated.

In addition, since the noise of the fan increases when the air volume increases and decreases when the air volume decreases, the air volume of the fan 4 is reduced by the air volume control means 7 based on the sensor information of the noise sensor 11 so as not to be offensive. With such control, it is possible to provide an air purifier 1a that does not cause noise.

Furthermore, when the illuminance sensor 12 or the human sensor 13 or both of them detect, the operation of the air purifier 1a is started, and when neither sensor detects, the operation of the air purifier 1a is stopped. . In addition, by performing automatic maintenance or the like when neither sensor detects anything for a long time, it is possible to provide an energy-saving air purifier 1a and improve usability.

In addition, the biosensor 14 detects viruses and bacteria, and when these are detected, the operation of the air purifier 1a is started. By controlling the amount of light, it is possible to provide an air purifier 1a that is more convenient to use.

According to such a configuration, at least one of the temperature sensor 9, the humidity sensor 10, the noise sensor 11, the illuminance sensor 12, the human sensor 13, and the biosensor 14 is provided. By controlling the irradiation means 5 and the fan 4, the survival rate of viruses and bacteria, more reliable inactivation according to the easiness of scattering of droplets and aerosols, low noise and automatic operation Air purifier. 1a can be provided.

<Third Embodiment>
A third embodiment of the air cleaner of the present invention will be described below with reference to the drawings. FIG. 6 is a diagram showing an example of the air cleaner of the present invention.
The difference from the second embodiment is the operation mode instruction means 20 for instructing the operation mode, the first operation mode 15 that prioritizes inactivation of the object, the second operation mode 16 that prioritizes quietness, At least two or more operation modes selected from a third operation mode 17 that prioritizes low power consumption and a fourth operation mode 18 that operates fully automatically, and operation mode selection means for selecting one of the operation modes. 19 is further provided.

A first operation mode 15 is a mode in which priority is given to the inactivation of the object. Based on the sensor information of at least one of the temperature sensor 9, humidity sensor 10, noise sensor 11, illuminance sensor 12, human sensor 13, and biosensor 14, the control is most suitable for inactivating the object. Control information is output to air volume control means 7 and light volume control means 8 .
For example, specifically, from the sensor information of the temperature sensor 9 and the humidity sensor 10, the air volume is controlled so as to maximize the collection performance of the target object in the cyclone chamber 3, and according to the sensor information of the biosensor 14, Control is performed such as increasing the amount of ultraviolet irradiation light and lengthening the ultraviolet irradiation period.

A second operation mode 16 is a mode that prioritizes quietness. Based on sensor information from at least one of the temperature sensor 9, humidity sensor 10, noise sensor 11, illuminance sensor 12, human sensor 13, and biosensor 14, the air volume control means 7 and the light intensity are controlled so as to make the noise as unobtrusive as possible. It outputs control information to the control means 8 .
For example, specifically, while detecting the approach of a person from the sensor information of the noise sensor 11 and the human sensor 13, the air volume of the fan 4 is reduced by the air volume control means 7 so as not to be offensive to the approaching person, and the air volume is reduced. In response to the above, the ultraviolet irradiation means 5 is controlled by the light amount control means 8 necessary for inactivation.

A third operation mode 17 is a mode that prioritizes low power consumption. Based on the sensor information of at least one of the temperature sensor 9, the humidity sensor 10, the noise sensor 11, the illuminance sensor 12, the human sensor 13, and the biosensor 14, the power consumption is the smallest, and the air purifier 1b as a whole Control information is output to the air volume control means 7 and the light amount control means 8 so as to reduce the peak current.
For example, specifically, the operation of the fan 4 by the air volume control means 7 and the operation of the ultraviolet irradiation means 5 by the light amount control means 8 are performed in a time-sharing manner. , and control such as minimizing the irradiation of the ultraviolet irradiation means 5 .

A fourth operating mode 18 is a fully automatic operating mode. Based on the sensor information of at least one of the temperature sensor 9, humidity sensor 10, noise sensor 11, illuminance sensor 12, human sensor 13, and biosensor 14, the balance of inactivation, quietness and power consumption of the object is adjusted. Control information is output to the air volume control means 7 and the light amount control means 8 so as to achieve the control in consideration.
For example, specifically, from the above sensor information, the viability of target pathogens such as viruses and bacteria, the ease of scattering of droplets and aerosols containing them, the noise that people feel uncomfortable, and air cleaning Perform control such as considering the balance of power consumption of the entire machine.

The operation mode instructing means 20 instructs the operation mode through a user interface such as a switch or a touch panel, but is not necessarily limited to this configuration.
The operation mode selection means 19 selects any one of the first operation mode 15, the second operation mode 16, the third operation mode 17, or the fourth operation mode 18 according to the instruction of the operation mode instruction means 20. Then, the control information output from the operation mode is output to the air volume control means 7 and the light amount control means 8. FIG.

According to such a configuration, by instructing the operation mode to the operation mode instructing means 20, the first operation mode 15 prioritizing the inactivation of the object and the second operation mode 16 prioritizing quietness can be selected. , a third operation mode 17 that prioritizes low power consumption, and a fourth operation mode 18 that operates fully automatically. 1b can be provided.

Next, with reference to FIG. 7, a control example of the fourth operation mode that operates fully automatically will be described. FIG. 7 is a schematic diagram showing a configuration example of a neural network.
Regarding separation performance of fine particles in a cyclone, the present inventors have investigated the shape of the cyclone chamber, the shape of the suction part, the shape of the discharge part including the air outlet pipe, the air speed, the air volume, the structure of the fan, the pressure loss, the temperature, the humidity, etc. , various fluid simulations etc. have been carried out while changing a number of parameters. As a result, it has been obtained from simulations and experimental results that the fine particle separation performance behaves more complicatedly depending on these parameters.
In FIG. 7, training data is created from such behavior, and from the information of the temperature sensor 9, humidity sensor 10, noise sensor 11, illuminance sensor 12, human sensor 13, and biosensor 14, inactivation of the object, silence This is a configuration example of a learned neural network that outputs control information to the air volume control means 7 and the light volume control means 8 optimized in terms of efficiency, low power consumption, and the like.

According to such a configuration, the fourth operation mode 18, which operates fully automatically, can realize a more accurate fully automatic mode, and further learns the user's preferences to update the neural network. can provide the air purifier 1b.

<Fourth Embodiment>
A fourth embodiment of the air cleaner of the present invention will be described below with reference to the drawings. FIG. 8 is a diagram showing an example of the air cleaner of the present invention.
The difference from the third embodiment is that the timer has the function of either or both of a timer that turns off the power after a specified time and a timer that turns on the power in one of the operation modes specified after the specified time. 21 is further provided.

According to such a configuration, the air purifier is capable of either or both of automatically turning off the power after the specified time and automatically turning on the power in the specified operation mode after the specified time. 1c can be provided.

<Fifth Embodiment>
A fifth embodiment of the air purifier of the present invention will be described below with reference to the drawings. FIG. 9 is a diagram showing an example of the air cleaner of the present invention.
The air purifier 1d of the present embodiment further includes at least one sensor selected from the acceleration sensor 22, the gyro sensor 23, and the geomagnetic sensor 24, and an emergency stop instructing means 25. The stop instructing means 25 is configured to instruct the air volume control means 7 to urgently stop the fan 4 and to instruct the light amount control means 8 to urgently stop the ultraviolet irradiation means 5 .

It is generally known that the centrifugal separation of fine particles by a cyclone is affected by the centrifugal force acting on the particles, the reaction force from the wall surface, and the gravity. If the air purifier 1d overturns, the cyclone chamber 3 also overturns, resulting in a decrease in collection efficiency.
Also, if the air purifier 1d is subjected to a strong impact or is broken by hand, the fan 4 may be exposed during operation and injured. Furthermore, if the ultraviolet irradiation means 5 is exposed during irradiation, depending on the wavelength used, there is a concern that diseases such as damage to the eyes and DNA damage to the skin may be induced.

In this embodiment, at least one of an acceleration sensor 22, a gyro sensor 23, and a geomagnetic sensor 24 is provided. The acceleration sensor 22 can detect impact, and the gyro sensor 23 can detect changes in posture. It is possible, and the geomagnetic sensor 24 can detect the direction. By combining these sensor information, it is possible to detect the posture with high accuracy and little error.
By emergency stopping the fan 4 and the ultraviolet irradiation means 5 of the air purifier 1d based on the impact, the change in direction, and the detection of the attitude, the object containing viruses and bacteria is not scattered, and the fan 4 and the It is possible to provide an air purifier 1d that minimizes the risk of injury, disability, disease, etc. by safely stopping the body even if the ultraviolet irradiation means 5 is exposed.

<Sixth Embodiment>
A sixth embodiment of the air purifier of the present invention will be described below with reference to the drawings. FIG. 10 is a diagram showing an example of the air purifier of the present invention.
In the air purifier 1e of this embodiment, the ultraviolet irradiation means 5 is arranged in the lower part of the cyclone chamber 3 so as to irradiate in the direction of the discharge section 6. As shown in FIG.
Here, as an example, the cyclone chamber 3 includes a cylindrical portion 3a mainly having a cylindrical shape, a conical portion 3b formed continuously from the cylindrical portion and having a conical shape, and a conical portion continuing from the conical portion and taken into the cyclone chamber 3. It has a collecting portion 3c for collecting the objects that have been picked up. In the air cleaner 1e of the present embodiment, the ultraviolet irradiation means 5 is arranged so as to irradiate the collection portion 3c in the direction of the discharge portion 6. As shown in FIG.

According to such a configuration, since the ultraviolet rays emitted from the ultraviolet irradiation means 5 are emitted to the entire cyclone chamber 3, both the collected objects and the objects contained in the swirling air are irradiated. Therefore, it is possible to provide an air purifier 1e that can efficiently perform deactivation.

In FIG. 10, the cyclone chamber 3 is composed of the cylindrical portion 3a, the conical portion 3b, and the collecting portion 3c. A structure composed of the cylindrical portion 3a and the collecting portion 3c without the conical portion 3b, or a structure having only the cylindrical portion 3a or only the conical portion 3b without the collecting portion 3c may be employed. Moreover, the same applies to other embodiments.

<Seventh embodiment>
A seventh embodiment of the air purifier of the present invention will be described below with reference to the drawings. FIG. 11 is a diagram showing an example of the air purifier of the present invention.
The air purifier 1f of the present embodiment further includes heat dissipation means 26 connected to the ultraviolet irradiation means 5 for dissipating heat generated from the ultraviolet irradiation means 5. The difference is that the heat dissipation means 26 is configured to dissipate heat by the fan 4 that forms the flow.

It is generally known that a UV-LED that emits ultraviolet rays, which is an example of the ultraviolet irradiation means 5, consumes a large amount of power. If the power consumption is large, the UV-LED itself will generate heat, which will have the effect of lowering the luminous efficiency and shifting the peak wavelength, and there is a risk that the effect of inactivating the target will be reduced. For this reason, a heat dissipation means such as a heat sink is sometimes used, but forced air cooling is required to efficiently dissipate the heat.
In this embodiment, the number of fans can be reduced by using part of the gas flow from the intake section 2 to the cyclone chamber 3 when the heat dissipation means 26 for dissipating the heat generated from the ultraviolet irradiation means 5 is forcedly air-cooled. No need to increase.

According to such a configuration, it is possible to provide an inexpensive air cleaner 1f without increasing the number of fans while efficiently dissipating heat from the ultraviolet irradiation means 5.
In FIG. 11, the position of the ultraviolet irradiation means 5 is the same as in the sixth embodiment, but similar effects can be obtained even if it is in the position of the first embodiment.

<Eighth Embodiment>
An eighth embodiment of the air purifier of the present invention will be described below with reference to the drawings. FIG. 12 is a diagram showing an example of the air purifier of the present invention.
In the air purifier 1g of the present embodiment, the gas flow path connecting the suction portions 2a and 2b and the cyclone chamber 3 is configured such that the outer wall portion of the cyclone chamber forms a part of the flow path. . In FIG. 12, the description of the air volume control means 7 and the light amount control means 8 is omitted, but these are the same as those of the other embodiments.

In general, the centrifugal separation of fine particles by a cyclone requires a certain or higher inlet air velocity to the cyclone chamber. Moreover, it turns out that the following numerical formulas are materialized for an air volume and an air velocity.
Air volume Q = passing area S x wind speed V
Therefore, it can be seen that in order to increase the air velocity at the entrance of the cyclone chamber using a fan with a certain air volume, the area through which the gas passes should be gradually decreased.

In FIG. 12, the fan 4 is a fan that forms a flow of gas from the suction portions 2a and 2b to the cyclone chamber 3, and a part of this gas flow path is formed along the outer wall of the cyclone chamber.
Here, the shape of the lower portion of the cyclone chamber 3 is narrower than that of the cylindrical portion 3a, and the air flowing from the fan 4 toward the cyclone chamber 3 has a smaller area to pass toward the entrance of the cyclone chamber 3, so the wind velocity is high. Become.

According to such a configuration, by making the outer wall of the cyclone chamber 3 part of the flow path of the gas heading to the cyclone chamber 3, the wind speed is increased, and the number of parts is reduced to reduce the price and size. It is possible to provide an air purifier 1g that can realize the reduction.

<Ninth Embodiment>
A ninth embodiment of the air cleaner of the present invention will be described below with reference to the drawings. FIG. 13 is a diagram showing an example of the air purifier of the present invention.
In the air purifier 1h of this embodiment, part of the gas flow path connecting the suction portions 2a and 2b and the cyclone chamber 3 is formed by a spiral groove (not shown) on the outer wall of the cyclone chamber 3 as shown in FIG. As shown, the gas sucked from the suction portions 2a and 2b is configured so that the wind velocity increases while ascending in a spiral shape.

According to such a configuration, the gas flow path connecting the suction portions 2a and 2b and the cyclone chamber 3 smoothly changes in a spiral shape, thereby reducing the pressure loss. Therefore, a fan with a low maximum static pressure and low power consumption can be used, so an air cleaner 1h with low power consumption can be provided.
In FIG. 13, description of the ultraviolet irradiation means 5 and the heat dissipation means 26 is omitted, but these are the same as in the eighth embodiment. Also, although the cyclone chamber 3 and the discharge portion 6 have different shapes, the effect of this embodiment is not affected.

Further, in FIG. 13, the direction of rotation of the spiral shape of the gas passage connecting the suction portions 2a and 2b and the cyclone chamber 3 and the direction of rotation of the gas in the cyclone chamber 3 are the same.

According to such a configuration, the gas, which has increased in speed while ascending in a spiral shape, can be taken into the cyclone chamber 3 from the entrance of the cyclone chamber 3 while maintaining the speed, so that the gas can be taken into the cyclone chamber 3 more reliably and efficiently. It is possible to provide an air purifier 1h capable of centrifuging fine particles by a cyclone.

Furthermore, by constructing the inner wall of the cyclone chamber 3 with an ultraviolet reflective material, the ultraviolet rays are reflected on the inner wall and irradiated more to the target within the cyclone chamber 3, thereby inactivating the target containing viruses and bacteria. It is preferable because the effect is further enhanced.

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h Air cleaner 2, 2a, 2b Suction part 3 Cyclone chamber 3a Cylindrical part 3b Conical part 3c Collection part 4 Fan 5 Ultraviolet irradiation means 6, 6a, 6b discharge section 7 air volume control means 8 light amount control means 9 temperature sensor 10 humidity sensor 11 noise sensor 12 illuminance sensor 13 human sensor 14 biosensor 15 first operation mode 16 second operation mode 17 third operation mode 18 third 4 operation modes 19 operation mode selection means 20 operation mode instruction means 21 timer 22 acceleration sensor 23 gyro sensor 24 geomagnetic sensor 25 emergency stop instruction means 26 heat dissipation means

Claims (15)

A suction section for sucking gas containing objects, a cyclone chamber for swirling the sucked gas to collect the objects contained in the gas, and a fan for forming a gas flow from the suction section to the cyclone chamber. , an ultraviolet irradiation means having a wavelength for inactivating an object in the cyclone chamber, a discharge section for discharging gas from the cyclone chamber, an air volume control means for controlling the air volume of the fan, and a light amount of the ultraviolet irradiation means. light amount control means for controlling;
An air purifier comprising: The light amount control means performs ultraviolet irradiation control of one or both of the amount of ultraviolet light necessary for inactivating the object and the irradiation period, and the ultraviolet irradiation control is repeated at regular time intervals. The air cleaner according to claim 1. The light amount control means changes at least one of the ultraviolet light amount necessary for deactivating the object, the irradiation period, and the time interval for repeating ultraviolet irradiation control, according to the air volume controlled by the air volume control means. The air purifier according to claim 2, characterized by: 4. The air purifier according to claim 2, wherein the air volume control means stops or rotates the fan at a low speed during the ultraviolet irradiation period by the ultraviolet irradiation means. further comprising at least one sensor among a temperature sensor, a humidity sensor, a noise sensor, an illuminance sensor, a human sensor, and a biosensor;
The air cleaner according to any one of claims 1 to 4, wherein the fan and the ultraviolet irradiation means are controlled based on detection by the sensor. an operation mode instructing means for instructing an operation mode; a first operation mode that prioritizes inactivation of an object; a second operation mode that prioritizes quietness; and a third operation mode that prioritizes low power consumption. 6. The apparatus according to claim 5, further comprising at least two operation modes among a fourth operation mode that operates fully automatically, and operation mode selection means for selecting one of the operation modes. air purifier. 7. The air purifier according to claim 6, wherein said fully automatic fourth operating mode is controlled by a neural network. Either or both of a timer that turns off the power after a specified time and a timer that turns on the power in one of the operation modes specified after the specified time,
8. An air purifier according to claim 6 or 7, wherein said operating mode instructing means is controlled by said timer. Equipped with at least one sensor among an acceleration sensor, a gyro sensor, and a geomagnetic sensor,
9. The apparatus according to any one of claims 1 to 8, wherein, based on the detection by said sensor, said air volume control means urgently stops said fan, and said light amount control means urgently stops said ultraviolet irradiation means. air purifier. The air purifier according to any one of claims 1 to 9, wherein the ultraviolet irradiation means is arranged in the lower part of the cyclone chamber so as to irradiate in the direction of the discharge section. Further comprising heat dissipation means for dissipating heat generated from the ultraviolet irradiation means,
The air cleaner according to any one of claims 1 to 10, wherein the fan dissipates heat from the heat dissipating means. A gas flow path that connects the suction section and the cyclone chamber,
The air cleaner according to any one of claims 1 to 11, wherein an outer wall portion of said cyclone chamber forms a part of said flow path. 13. The air purifier according to claim 12, wherein the gas flow path connecting the suction part and the cyclone chamber is spiral. 14. The air purifier according to claim 13, wherein the direction of rotation of the spiral gas passage is the same as the direction of rotation of the gas in the cyclone chamber. The air purifier according to any one of claims 1 to 14, wherein the inner wall of the cyclone chamber is made of an ultraviolet reflecting material.

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