JP2012237458A - Air cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaning apparatus that can reduce effectively the leakage of discharge noise generated by an ion generator to the outside while preventing the disappearance of ions in an air duct, and can make compatible a high cleaning function and a quiet operation.SOLUTION: The air cleaning apparatus includes: a fresh air inlet 12; an air supply inlet 17; and an outer casing 1 in which an air duct connecting the fresh air inlet and the air supply inlet is disposed and which incorporates a blower 2 and the ion generator 3 inside where the ions generated by the ion generator 3 are conveyed by an air flow flowing from the fresh air inlet 12 to the air supply inlet 17 by the operation of the blower 2 and ejected through the air supply inlet 17, and thereby air in the installation space is cleaned. Furthermore, the blower 2 is an axial blower which has an impeller 22 rotating around an axis along a flowing direction of the air flow, and the ion generator 3 is disposed at the upstream side rather than the blower 2 in the flowing direction of the air flow.

Description

  The present invention relates to an air cleaning device that releases positive ions and negative ions to clean air in a discharge space.

  2. Description of the Related Art In recent years, air purifiers aimed at purifying air in living spaces have been widely used in accordance with an increase in health consciousness. Air purifiers have been put to practical use in various configurations, and as one of them, positive ions and negative ions are released into a living space, and bacteria and viruses floating in the living space are inactivated, and There is an air cleaning device configured to clean and remove the odorous components and clean the air in the living space (see, for example, Patent Document 1).

This air purifier includes a blower and an ion generator in a blower passage provided inside the outer casing. The air passage is provided so as to communicate between the air inlet and the air inlet provided in the outer casing. The blower includes an impeller that rotates when driven by a motor, and an airflow is generated inside the air passage by the rotation of the impeller. The ion generator generates a plasma discharge by applying a high-voltage AC driving voltage between the opposing electrodes, charges water molecules in the air, and generates H ⁺ (H ₂ O) _m (positive ions) and O _2. ^- generating a (H ₂ O) _n (negative ions).

  The air cleaning device sucks the air in the installed room from the air inlet into the air passage through the operation of the blower, flows through the air passage, and sends it out to the room through the air inlet. Positive ions and negative ions (hereinafter simply referred to as ions) generated by the ion generator are transported by the air flow in the air passage, discharged into the room through the air supply port, spread throughout the room, and bacteria, viruses It adheres to various odor components and changes to OH radicals, extracts hydrogen from the deposit, and decomposes or inactivates the deposit.

JP 2010-55960 A

  The air cleaning device configured as described above cleans the air by ions released into the living space acting on bacteria, viruses, odorous components, etc., and decomposing or inactivating them. Therefore, in order to enhance the cleaning effect, it is necessary to increase the released amount of ions as much as possible. On the other hand, when the ions generated by the ion generator are mixed in the airflow and flow through the air passage, there is a problem that they tend to disappear by contacting each part of the air passage.

  In the conventional air cleaning apparatus, attention is paid to the fact that ions mixed in the airflow easily collide with the impeller of the blower. On the downstream side, an ion generator is disposed in the vicinity of the air supply opening that opens at the end of the air passage so that ions generated by the ion generator can be discharged without waste.

  However, the ion generator is configured to generate ions by plasma discharge between the counter electrodes, and it is inevitable that a discharge sound is generated along with the ion generation operation. When an ion generator is arranged near the mouth, most of the discharge sound generated by the ion generator leaks into the room through the air supply port.

  An air purifier is a device that is generally used even in a quiet environment such as at night or while sleeping. If there is a lot of discharge sound that leaks into the room, the leaked sound may be annoying to the user. There is a problem that it is heard and causes a deterioration in the feeling of use.

  The sound generated by the ion generator is small compared to the sound generated by the blower (operating sound of the driving motor, wind noise of the impeller, etc.). While it can be reduced by changing the conditions, the sound generated by the ion generator is a sound caused by discharge that is indispensable for ion generation. There was a problem of inviting.

  The present invention has been made in view of such circumstances, effectively reducing leakage of discharge sound generated by the ion generator to the outside while preventing the disappearance of ions in the air passage, and achieving high cleanliness. An object of the present invention is to provide an air purifying device capable of achieving both a function and a quiet operation.

  The air purifying apparatus according to the present invention includes a blower and an ion generator inside an outer casing provided with an intake port and an air supply port and an air passage that communicates the air inlet and the air supply port, and the ion generator is disposed in the air passage. The generated ions are transported by an airflow flowing from the intake port toward the air supply port by the operation of the blower, and are discharged to the installation space of the outer casing through the air supply port. The air cleaner is an axial fan having an impeller that rotates about an axis along the flow direction of the airflow, and the ion generator has a flow direction of the airflow that is higher than that of the fan. It is arranged on the upstream side.

  In the present invention, the disposition position of the ion generator in the air passage is set at the upstream side of the air flow direction of the air flow, that is, the position away from the air supply port, and the discharge sound generated by the ion generator is set. Prevents leakage to the outside through the air inlet and realizes quiet operation. The ions generated by the ion generator are in contact with the impeller of the blower disposed on the downstream side of the ion generator and the inner wall of the air passage while flowing in the air passage along with the air flow. Ion due to contact with the impeller and the inner wall of the air passage because it is an axial blower having an impeller that rotates around its axis and has a large passage area between the blades and can be arranged in a straight air passage. Annihilation can be minimized, and a sufficient amount of ions can be released to achieve a desired cleaning effect.

  Moreover, the air purifying apparatus which concerns on this invention is equipped with a sound absorption means downstream in the flow direction of the said air flow rather than the said ion generator inside the said ventilation path.

  In the present invention, the discharge sound generated by the ion generator is absorbed by the sound absorbing means provided on the downstream side, and the leakage sound to the outside is suppressed, thereby enabling a quieter operation.

  Moreover, the air purifying apparatus according to the present invention is characterized in that the sound absorbing means is configured by attaching a sound absorbing material to at least a part of a surface of the impeller facing the upstream side in the air flow direction. To do.

  In this invention, the sound absorbing material is applied to the surface facing the upstream side in the flow direction of the airflow of the impeller of the axial blower, specifically, the front surface of the impeller and the hub portion. A sound absorbing means capable of sound absorption is realized with a simple configuration.

  Further, in the air purifying apparatus according to the present invention, the outer casing is detachably connected to an intake casing provided with the intake port, and an air supply casing provided with the air supply port and a mounting portion of the blower and the ion generator. It is characterized by being comprised.

  In the present invention, the intake housing and the air supply housing are separated from each other, making it possible to make contact with the ion generator attached to each of the attachment portions of the air supply housing, thereby facilitating inspection and maintenance work.

  In the air purifying apparatus according to the present invention, the mounting portion of the blower is provided facing the connection portion with the intake housing, and the mounting portion of the ion generator is connected to the intake housing from the mounting portion of the blower. It is characterized by projecting inward.

  In this invention, the mounting portion of the blower in the air supply housing is provided facing the connection portion with the intake housing, and the user separates the intake housing from the air supply housing, thereby It is possible to check the state and contact the blower, and to easily perform inspection and maintenance work. The ion generator is attached to an attachment portion projecting from the attachment portion of the blower toward the inside of the intake housing, and is disposed on the upstream side of the blower inside the intake housing. When the air intake case and the air supply case are separated, the ion generator is separated from the air intake case together with the air supply case, and the user can check the state of the ion generator and contact the ion generator. Maintenance work can be easily performed.

  In the air cleaning apparatus according to the present invention, the ion generator is detachably attached.

  In this invention, an ion generator can be removed from an attachment part, for example, delicate operations, such as cleaning of a counter electrode, can be implemented in the stable state.

  Moreover, the air purifying apparatus according to the present invention is detachably attached to the inside of the intake housing, and includes a dust collection filter that covers the intake port.

  In the present invention, a dust collection filter that covers the intake port is attached to the inside of the intake housing so that it can be separated together with the intake housing. The dust collection filter captures dust that is about to enter the air passage through the air inlet. The dust collection filter clogged by dust trapping can be exchanged easily and without polluting the surroundings by carrying it with the air intake housing and attaching / detaching it in a separated state.

  Moreover, the air purifying apparatus according to the present invention is characterized in that the dust collection filter is arranged upstream of the ion generator in the air flow direction.

  In this invention, since almost the entire amount of the airflow sucked into the air passage from the intake port through the dust collecting filter and flowing in the air passage passes through the position where the ion generator is disposed, Almost the entire amount can be discharged to the installation space through the air supply port, and the cleaning effect by the action of ions can be realized satisfactorily.

  Further, the air purifying apparatus according to the present invention includes a detecting means for detecting the connection between the intake housing and the air sending housing, and a means for prohibiting the operation of the ion generator and the blower when the detecting means is in a non-detection state. It is characterized by providing.

  In the present invention, when the intake housing and the air supply housing are separated, the operation of the ion generator and the blower is prohibited according to the non-detection of the detection means. Therefore, there is no fear that the ion generator and the blower will be operated by an inadvertent operation during inspection and maintenance work performed in a separated state, and safe work can be performed.

  Furthermore, the air purifying apparatus according to the present invention is characterized in that the detection means is a contact switch that is attached to one of the intake housing and the air supply housing and is turned on by contact with the other.

  In this invention, since the contact switch attached to one of the intake housing and the air supply housing is turned on in contact with the other, the connection between the two housings is detected with a simple configuration, and the operation of the ion generator and the blower when not connected It is possible to implement safety measures that prohibit this.

  In the air cleaning device according to the present invention, since the ion generator is arranged upstream of the blower that generates an air flow in the air passage, the discharge sound generated by the ion generator is opened at the downstream end of the air passage. It is possible to effectively prevent leaking to the outside through the mouth, and since the blower is an axial blower, the flow area between the blades is sufficiently secured, and the air flow path is made straight to generate ions. It is possible to suppress annihilation due to the contact of ions generated by the vessel, to secure a sufficient amount of ions released from the air supply port, and to achieve both quiet operation and a good air cleaning effect. The present invention has excellent effects.

1 is a perspective view schematically showing an external appearance of an air cleaning device according to an embodiment. It is front sectional drawing which shows the internal structure of the air purifying apparatus which concerns on embodiment schematically. It is a sectional side view which briefly shows the internal structure of the air purifying apparatus which concerns on embodiment. It is sectional drawing which shows the state which isolate | separated the intake housing. It is sectional drawing which shows the state which isolate | separated the air_supply casing. It is a sectional side view which briefly shows the internal structure of the air purifying apparatus which concerns on other embodiment.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a perspective view schematically showing an external appearance of an air purifying apparatus according to an embodiment, FIG. 2 is a front sectional view schematically showing an internal configuration of the air purifying apparatus according to the embodiment, and FIG. It is sectional drawing.

  As shown in FIGS. 2 and 3, the air purifier includes a blower 2 and an ion generator 3 inside the outer casing 1. The outer casing 1 is formed by connecting an intake casing 10 and an air supply casing 11 having a hollow cylindrical shape with a rectangular cross section, with one end portions thereof being coaxially aligned with each other.

  For connection between the intake housing 10 and the air supply housing 11, for example, engaging claws (not shown) that can be elastically deformed are provided at a plurality of positions on the peripheral edge of one connection side end portion, and the other connection side end portion is connected. An engagement recess (not shown) corresponding to each of the engagement claws is provided on the periphery of the engagement claw, and each engagement claw is engaged with the corresponding engagement recess. This connection can be easily released by an appropriate operation, and the intake housing 10 and the air supply housing 11 are detachable.

  As shown in FIG. 2, the other end portion of the intake housing 10 is provided with an intake port 12 that opens to substantially the entire surface. A dust collection filter 13 is attached inside the intake housing 10. The dust collection filter 13 is integrally or separately held by a filter holder 14 having a bottomed cylindrical shape so as to form substantially the entire bottom surface and a part of the peripheral surface continuous to the bottom surface. The filter holder 14 includes a flange 14a that is provided around the outer surface of the other side. As shown in FIG. 2, the dust collection filter 13 is provided with the flange 14a of the filter holder 14 provided around the inner surface of the opening of the intake housing 10. By mounting on the flange portion 10a, the inside of the intake housing 10 is attached so as to cover the entire surface of the intake port 12.

  Support legs 15 protrude from the outer surface of the intake housing 10 on the same side as the intake port 12 at each of the four corners. As shown in FIGS. 2 and 3, the air cleaning device is supported on the mounting surface A by the support legs 15 in a standing posture with the intake housing 10 facing down and the air feeding housing 11 facing up. used. At this time, the air inlet 12 provided in the air intake casing 10 faces the mounting surface A in a state of being separated by the height of the support leg 15. The mounting surface A is appropriately selected in a floor surface, a top surface of a desk or a shelf, and a room where an air purifier is installed.

  On the other hand, a cylindrical ventilation duct 16 is fixed inside the air supply casing 11 so as to be coaxial, and a rectifying grid is provided at one end of the ventilation duct 16 at the other end of the air supply casing 11. An air supply port 17 configured and provided is established.

  The blower 2 includes a housing 20 having a single cylindrical shape, a motor 21 coaxially fixed at the center of the housing 20, and an impeller 22 attached to an output end of the motor 21. It is a blower, and the housing 20 is fitted in and fixed to the ventilation duct 16 and attached so that the impeller 22 is located on the connection side with the intake housing 10 as shown in FIGS.

  The impeller 22 of the blower 2 is rotated by driving the motor 21, and generates an air flow that flows in the axial direction from the lower side to the upper side inside the housing 20. As a result, as shown by an arrow in FIG. 2, outside air is sucked into the air intake housing 10 through the air inlet 12 that opens at the lower end. In this state, the dust flows upward and reaches the blower 2 in a state where dust is captured and removed, and is sent upward by the blower 2, and is sent to the outside through an air supply port 17 that opens at the upper end of the ventilation duct 16.

  The sound absorbing material 23 is deposited on substantially the entire surface of the hub of the impeller 22 and the lower surface of the blade, that is, the surface facing the upstream side in the airflow direction. The sound absorbing material 23 is a porous material formed by molding glass wool or rock wool into a sheet shape, for example, and is attached by adhesion to a hub and blades. These sound absorbing materials 23 absorb the sound energy of the sound wave propagating in the airflow, and suppress the propagation to the downstream side.

  The ion generator 3 includes a pair of counter electrodes 30 and 31 spaced apart on one side, and a high-voltage AC driving voltage is applied between them to generate a plasma discharge, and water molecules in the surrounding air are removed. It has a known structure that generates a positive ion and a negative ion of substantially the same amount by being charged, and is supported by a support body 32 protruding from the connection side end of the air supply casing 11. , 31 are mounted so as to be located inside the intake casing 10.

  As shown in FIG. 3, the support body 32 has an engaging claw 33 at the tip, and a stop plate 34 at the base so as to face the engaging claw 33, and the ion generator 3 It is attached in a state of being held between the claw 33 and the stop plate 34. The stop plate 34 is provided with a power supply projection 35 that contacts the ion generator 3 mounted as described above, and is driven between the counter electrodes 30 and 31 of the ion generator 3 by power supply from the power supply projection 35. A voltage is applied.

  The ion generator 3 operates by applying a drive voltage, and generates positive ions and negative ions inside the intake casing 10 where the counter electrodes 30 and 31 are located. The generated ions are transported by the air flowing through the intake casing 10 as described above, and are sent to the outside through the air duct 16 and the air inlet 17.

  The positive ions and negative ions sent out in this way are dispersed inside the room where the air purifier is installed and spread throughout, and adhere to bacteria, viruses, various odorous components, etc. contained in the air and become OH radicals. To remove hydrogen from the deposit, decompose or inactivate the deposit, and clean the air in the room.

  Air from which dust has been removed by passing through the dust collection filter 13 flows at the position where the ion generator 3 is disposed. The positive ions and negative ions generated by the ion generator 3 are sent out into the room together with clean air that does not contain dust, and the air in the room has the above-described action of positive ions and negative ions and the dust collected by the dust collection filter 13. Is effectively cleaned.

  The dust collection filter 13 is attached through the filter holder 14 so as to cover the entire surface of the intake port 12 inside the intake housing 10, and as shown in FIG. 2, upstream of the ion generator 3 in the airflow direction. Is located. Therefore, substantially the entire amount of airflow sucked from the intake port 12 through the dust collecting filter 13 passes through the position where the ion generator 3 is disposed, and the positive ions and negative ions generated by the ion generator 3 together with the airflow. It is reliably discharged through the air supply port 17, and the above-described cleaning effect due to the action of positive ions and negative ions can be satisfactorily realized.

  The ion generator 3 generates a discharge sound accompanying the plasma discharge between the counter electrodes 30 and 31 during the ion generation operation. The discharge sound reaches the air supply port 17 through the ventilation duct 16 in the intake housing 10 and the air supply housing 11 and is emitted from the air supply port 17. However, the ion generator 3 generates more airflow than the blower 2. Since it is arranged on the upstream side in the flow direction and is located away from the air supply port 17, it is possible to reduce the discharge sound that leaks into the installation chamber through the air supply port 17.

  The impeller 22 of the blower 2 is covered with the sound absorbing material 23 as described above, and the discharge sound generated by the ion generator 3 is absorbed by the sound absorbing material 23 located on the downstream side. It is possible to further reduce the discharge sound that leaks from the opening 17 into the installation room, and quiet operation is possible. As described above, the sound absorbing material 23 is attached to substantially the entire surface of the impeller 22 facing the upstream side of the airflow and occupies substantially the entire area of the air passage through which the airflow flows. Absorption is effectively performed, and the effect of reducing leakage sound can be enhanced. The sound absorbing material 23 may be attached only to a part of the impeller 22 such as only the hub or only the blade.

  Ions generated by the ion generator 3 come into contact with downstream parts (the impeller 22 of the blower 2, the inner surface of the ventilation duct 16, etc.) in the process of being transported as described above, and there is a possibility of disappearing due to this contact. However, the blower 2 is an axial flow blower, has a large flow path area between the blades of the impeller 22, and the air passage including the ventilation duct 16 can be linear as shown in the figure, so that ion generation is performed. The disappearance of ions generated by the vessel 3 can be suppressed to a small level, and a sufficient amount of ions can be released from the air supply port 17 to maintain a high cleaning function.

  In the air cleaning device configured as described above, the dust collection filter 13 in the intake housing 10 is clogged with dust trapped during operation, and the blower 2 and the ion generator 3 pass through the dust collection filter 13. Since these fine dusts or dust that has entered from other parts during operation stoppage adhere, these inspections and maintenance are necessary.

  In the air purifying apparatus of the embodiment, an intake casing 10 and an air supply casing 11 constituting the outer casing 1 are detachably connected, and inspection and maintenance of the dust collection filter 13, the blower 2 and the ion generator 3 are performed. Can be carried out by separating the intake housing 10 and the air supply housing 11 from each other.

  FIG. 4 is a cross-sectional view showing a state where the intake housing 10 is separated. As shown in the figure, the dust collection filter 13 and the filter holder 14 can be removed together with the air intake housing 10 and can be easily attached and detached from the connection side opening with the air supply housing 11 as indicated by arrows in the drawing. This attachment / detachment is performed to replace the clogged dust collection filter 13. The replacement of the dust collection filter 13 can be carried with the intake housing 10 to an appropriate place, and the possibility that the dust trapped by the dust collection filter 13 during the replacement may become dirty and the surroundings may be soiled can be avoided. .

  FIG. 5 is a cross-sectional view showing a state where the air supply housing 11 is separated. As described above, since the support 32 of the ion generator 3 protrudes from the connection side end of the air supply housing 11, the ion generator 3 can be detached together with the air supply housing 11 and used. A person can hold the ion generator 3 outside the air supply housing 11 and easily attach and detach it to / from the support body 32, for example. A delicate maintenance operation such as removing dust adhering to the counter electrodes 30 and 31 can be easily performed with the ion generator 3 removed from the support portion 32. As shown by a two-dot chain line in FIG. 5, the support body 32 is an elastic body that can be bent and deformed, and the ion generator 3 is attached and detached by bending the support body 32 and engaging the engagement claws 33. It can be easily implemented by canceling.

  The blower 2 is attached in the vicinity of the connecting portion of the air supply housing 11 so as to face the connecting portion. Therefore, in the separated state shown in FIG. 5, the user can easily approach each part of the blower 2, in particular, the impeller 22 from the opening on the connection side of the air supply housing 11. Maintenance work such as removal of dust adhering to the blade surface can be easily performed.

  As shown in FIGS. 3 and 5, the contact switch 4 is attached to the outside of the ventilation duct 16 at the connection side end of the air supply housing 11. The contact switch 4 has a switch piece 40 protruding toward the connection side of the intake housing 10. As shown in FIG. 3, the switch piece 40 is a part of the air intake housing 10 in a state where the air supply housing 11 is connected to the air intake housing 10, more specifically, the filter holder 14 attached in the air intake housing 10. Contact the flange 14a. The contact switch 4 is turned on in this state, and functions as detection means for detecting that the intake housing 10 and the air supply housing 11 are in a connected state.

  When the air supply housing 11 is separated, the switch piece 40 of the contact switch 4 protrudes as shown in FIG. The contact switch 40 is turned off in this state and becomes a non-detection state. When the air purifier is in such a non-detection state, the operation, more specifically, the operation of the blower 2 and the ion generator 3 is prohibited. Therefore, there is no possibility that the blower 2 and the ion generator 3 operate during the above-described inspection and maintenance work, and the work can be performed safely.

  The prohibition of the operation of the blower 2 and the ion generator 3 may be realized by the operation of the operation control unit to which the ON / OFF signal of the contact switch 40 is given, and the contact switch 40 is supplied with power from the blower 2 and the ion generator 3. You may implement | achieve by the structure which is interposed in a circuit and an electric power supply is interrupted | blocked by contact switch 40 being turned off. Furthermore, the detection means for detecting that the intake housing 10 and the air supply housing 11 are in a connected state may be configured by an appropriate sensor other than the contact switch 40.

  FIG. 6 is a side cross-sectional view schematically showing an internal configuration of an air cleaning device according to another embodiment. In the air purifying apparatus shown in this figure, the sound absorbing material 23 is attached not only to the impeller 22 of the blower 2 but also to the outer surface of the filter holder 14 in the intake housing 10 and the outer surface of the ventilation duct 16 in the air supply housing 11. It is. In the filter holder 14, a number of through holes 18 are formed in the peripheral wall downstream of the ion generator 3 in the airflow direction, and the sound absorbing material 23 is attached to the entire outer surface of the formation region of the through holes 18. It is. In addition, the ventilation duct 16 has a large number of through holes 19 formed in the peripheral wall on the downstream side in the airflow direction from the fitting portion of the blower 2, and the sound absorbing material 23 is formed on the entire outer surface of the formation region of the through holes 19. It is attached to.

  The sound absorbing material 23 provided in this way absorbs the discharge sound generated by the ion generator 3 through the through holes 18 or 19. By the synergistic action with the sound absorbing material 23 provided in the impeller 22, the sound leaking outside through the air supply port 17 can be effectively reduced, and a quiet operation can be realized. The sound-absorbing material 23 is not limited to the above-described form, and can be appropriately provided in the air passage on the downstream side of the ion generator 3. Further, the sound absorbing means for absorbing the discharge sound can be realized by an appropriate configuration capable of absorbing sound, but the sound absorbing material 23 provided as shown in the embodiment is easy to install, and the flow of the air current is reduced. It is preferable in that it does not disturb.

DESCRIPTION OF SYMBOLS 1 Outer casing 2 Blower 3 Ion generator 4 Contact switch 10 Intake casing 11 Inlet casing 12 Inlet 13 Dust collection filter 17 Inlet 22 Impeller 23 Sound absorbing material (sound absorbing means)

FIG. 5 is a cross-sectional view showing a state where the air supply housing 11 is separated. As described above, since the support 32 of the ion generator 3 protrudes from the connection side end of the air supply housing 11, the ion generator 3 can be detached together with the air supply housing 11 and used. A person holds the ion generator 3 outside the air supply housing 11 and can easily attach and detach it to / from the support 32. For example , a delicate method such as removing dust attached to the counter electrodes 30 and 31 can be used. maintenance work can be easily carried out in a state where the support 32 is removed ion generator 3. As shown by a two-dot chain line in FIG. 5, the support body 32 is an elastic body that can be bent and deformed, and the ion generator 3 is attached and detached by bending the support body 32 and engaging the engagement claws 33. It can be easily implemented by canceling.

When the air supply housing 11 is separated, the switch piece 40 of the contact switch 4 protrudes as shown in FIG. The contact switch 4 is turned off in this state and becomes a non-detection state. When the air purifier is in such a non-detection state, the operation, more specifically, the operation of the blower 2 and the ion generator 3 is prohibited. Therefore, there is no possibility that the blower 2 and the ion generator 3 operate during the above-described inspection and maintenance work, and the work can be performed safely.

Operation prohibition of the blower 2 and the ion generator 3, on the contact switch 4 may be realized by the operation of the operation control unit off signal is applied, also the contact switch 4, feed blower 2 and the ion generator 3 You may implement | achieve by the structure which is interposed in a circuit and an electric power supply is interrupted | blocked by the OFF of the contact switch 4. FIG. Furthermore, detection means for the intake housing 10 and the air supply housing 11 is detected to be in the connected state may be configured by the contact switch 4 except appropriate sensors.

Claims (10)

An air blower and an ion generator are provided inside an outer casing provided with an air intake port and an air supply port and an air passage that communicates these, and ions generated by the ion generator in the air passage are operated by the air blower. In the air purifier for carrying the air flow flowing from the intake port toward the air supply port, discharging to the installation space of the outer casing through the air supply port, and purifying the air in the installation space,
The blower is an axial blower having an impeller that rotates about an axis along the flow direction of the airflow, and the ion generator is disposed upstream of the blower in the flow direction of the airflow. Features an air purifier.   The air purifying device according to claim 1, further comprising a sound absorbing means on the downstream side in the flow direction of the airflow with respect to the ion generator inside the air passage.   The air cleaner according to claim 2, wherein the sound absorbing means is configured by attaching a sound absorbing material to at least a part of a surface of the impeller facing the upstream side in the flow direction of the airflow. .   The outer casing is configured by detachably connecting an intake casing provided with the intake port, and an air supply casing provided with the air supply port and an attachment portion of the blower and the ion generator. The air purifier according to any one of claims 1 to 3.   The mounting portion of the blower faces the connecting portion with the intake housing, and the mounting portion of the ion generator protrudes from the mounting portion of the blower into the intake housing. The air purifier according to claim 4, wherein:   The air purifier according to claim 4 or 5, wherein the ion generator is detachably attached.   The air purifier according to any one of claims 4 to 6, further comprising a dust collecting filter that is detachably attached to the inside of the intake housing and covers the intake port.   The air cleaner according to claim 7, wherein the dust collection filter is disposed upstream of the ion generator in the air flow direction.   The detection means for detecting the connection between the intake casing and the air supply casing, and means for prohibiting the operation of the ion generator and the blower when the detection means is in a non-detection state. The air purifier according to any one of claims 4 to 7.   9. The air cleaning device according to claim 8, wherein the detection means is a contact switch that is attached to one of the intake housing and the air supply housing and is turned on by contact with the other.

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