JP2012068000A - Unit for generating active species - Google Patents

Abstract

Provided is an active species generating unit capable of easily realizing interlocking control with an air conditioning unit when installed in addition to an air conditioning unit having a fan.
The active species generating unit is connected to an air conditioning unit having an indoor fan. The pleat filter captures viruses or bacteria, and the viruses or bacteria captured by the pleat filter by discharge. An active species generation unit 12 that generates active species for inactivation, a fan drive status reception unit 21 that receives a signal indicating the drive state of the indoor fan 92, and an active species control unit 22 are provided. The active species control unit 22 determines whether or not the indoor fan 92 is being driven based on the signal received by the fan drive status receiving unit 21, and when it is determined that the indoor fan 92 is being driven, the active species Discharge by the generator 12 is started.
[Selection] Figure 1

Description

  The present invention relates to an active species generating unit.

  Conventionally, for example, as described in Patent Document 1 (Japanese Patent Laid-Open No. 8-131880), a ceiling cassette type air cleaner has been proposed. This ceiling cassette type air purifier is provided with a collecting element that charges and traps bacteria in the air and an ultraviolet lamp for killing the bacteria trapped by the collecting element. The ceiling cassette type air cleaner is provided with a control circuit that operates based on a command from a remote controller to be operated.

  This control circuit controls the charge of bacteria by operating the high voltage generator, controls the fan by operating the fan drive circuit, and operates the UV lamp on / off circuit to operate the UV lamp. The start / stop control is performed.

  The ceiling cassette type air cleaner as described in the above-mentioned Patent Document 1 (JP-A-8-131880) can control both the fan drive circuit and the ultraviolet lamp on / off circuit in advance. Since both are connected to the control circuit, it is possible to link the drive control of the fan and the start / stop control of the ultraviolet lamp.

  On the other hand, there is a case where such an additional means is desired to be installed later for an air conditioning unit that is not provided with an additional means for killing bacteria or the like captured by the filter. However, in such a case, it is difficult to realize the interlock control as described above.

  In the air conditioning unit, it is particularly difficult to realize the interlock control when there is no connection terminal capable of bidirectional communication of control signals with additional means attached later. become.

  This invention is made | formed in view of the point mentioned above, and when the subject of this invention is additionally installed with respect to the air conditioning unit which has a fan, implement | achieves interlocking control with an air conditioning unit easily. It is to provide an active species generating unit capable of.

  An active species generation unit according to a first aspect is an active species generation unit connected to an air conditioning unit having a fan, and includes a filter, an active species generation unit, a first reception unit, and a control unit. ing. In addition, as a connection aspect of an air-conditioning unit and an active species production | generation unit, it may be connected through the duct for conveying conditioned air, and the active species production | generation unit is built in with respect to an air-conditioning unit. It may be connected. The filter captures viruses or bacteria contained in the air flow generated by the fan. The active species generating unit generates active species for inactivating the virus or bacteria captured by the filter by discharging. The first receiving unit receives a signal indicating the driving state of the fan. The control unit determines whether or not the fan is being driven based on the signal received by the first receiving unit, and starts the discharge by the active species generating unit when determining that the fan is being driven. When the control unit determines that the fan is being driven, it is only necessary to start the discharge by the active species generating unit, and it is not necessary to stop the discharge by the active species generating unit at the same time when the fan is stopped. The case where the discharge by the active species generator is stopped is also included in the control by the controller.

  Since the active species generating unit is provided with the first receiving unit, it can receive a signal indicating the driving state of the fan in the air conditioning unit. For this reason, the control unit can grasp the driving status of the fan based on the signal received by the first receiving unit, and can start the discharge by the active species generating unit during driving of the fan. . Therefore, the virus and bacteria caught by the filter when the fan is driven can be killed by the active species generated from the active species generating unit.

  Thus, even when control by sending a control command from the control unit of the active species generation unit to both the fan and the active species generation unit is not possible, the first reception unit sends a signal indicating the drive state of the fan. With the simple configuration of receiving, discharge by the active species generating unit can be started while the fan is driven.

  The active species generation unit according to the second aspect is the active species generation unit according to the first aspect, and the air conditioning unit has a terminal for sending out a signal indicating the driving state of the fan. The first receiving unit is connected to the terminal for receiving a signal indicating the driving state of the fan sent out from the terminal.

  This active species generating unit is used together with an air conditioning unit having a terminal for sending out a signal indicating the driving state of the fan. Therefore, the control unit of the active species generation unit can easily grasp the driving state of the fan only by connecting the signal indicating the driving state of the fan sent out from the terminal so that the first receiving unit can receive the signal. It becomes possible.

  The active species generation unit according to the third aspect is the active species generation unit according to the first aspect or the second aspect, and further includes a wind speed sensor and a second receiver. The wind speed sensor detects the speed of the air flow generated by the fan. The second receiving unit receives a signal from the wind speed sensor. Based on the signals received by the first receiver and the second receiver, the controller determines that the wind speed grasped by the second receiver is less than the predetermined wind speed even though the fan is about to be driven. In some cases, the discharge by the active species generator is reduced or stopped.

  According to the signal received by the first receiver, the active species generating unit can grasp that the fan of the air conditioning unit is driven, and the second receiver receives a predetermined signal according to the signal received from the wind speed sensor. It may be possible to grasp that the wind speed is less than the wind speed. In this case, since the control unit can perform control to reduce or stop the discharge by the active species generating unit, it is possible to avoid a state where an excessive amount of active species is generated.

  The active species generating unit according to the fourth aspect is the active species generating unit according to any one of the first to third aspects, and the control unit performs any one of the following controls. In one control, the control unit continues discharging by the active species generation unit after the first reception unit no longer receives a signal indicating the driving state of the fan until the predetermined first condition is satisfied. In the other control, after the first receiving unit stops receiving the signal indicating the driving state of the fan, the control unit restarts the discharge of the active species generating unit in the discharge stopped state until the predetermined second condition is satisfied. Continue discharging.

  This active species generation unit does not stop the discharge by the active species generation unit when the fan of the air conditioning unit stops, but from when the fan of the air conditioning unit stops until the predetermined first condition or the predetermined second condition is satisfied. During this time, discharge by the active species generator is continued. As a result, even if viruses or bacteria that have not been killed remain in the state of being captured by the filter when the fan of the air conditioning unit is stopped, these can be further killed.

  An active species generation unit according to a fifth aspect is the active species generation unit according to any one of the first to fourth aspects, further comprising an air filter and an active species generation unit display unit. The air filter is provided to pass the air flow generated by the fan. The air conditioning unit has an air conditioning unit display unit that displays and outputs the operation state. The active species generation unit display unit is connected to the control unit, and displays and outputs a state related to the air filter separately from the air conditioning unit display unit. Here, the “state relating to the air filter” can be specified, for example, by measuring the accumulated operation time of the fan after the start of use of a new air filter or a cleaned air filter, or the pressure loss increases. The degree of clogging or dirt specified by detecting the presence or absence of contamination is included.

  This active species generating unit is provided with an air filter that is separate from a filter that traps viruses and bacteria, and this air filter may become clogged and dirty with prolonged use. Here, even if it is difficult or impossible to transmit the display output related to the contamination of the air filter to the air conditioning unit display unit and display it, the air conditioning unit display unit Separately from the above, it is possible to display and output to an original active species generating unit display unit. Thereby, even if the display output is difficult or impossible in the display unit for the air conditioning unit, the user can easily grasp the replacement or maintenance time of the air filter.

  In the active species generating unit according to the first aspect, even when control by sending a control command from the control unit of the active species generating unit to both the fan and the active species generating unit is impossible, the driving state of the fan is changed. With the simple configuration in which the first signal is received by the first receiver, it is possible to start the discharge by the active species generator while the fan is being driven.

  In the active species generating unit according to the second aspect, the control unit of the active species generating unit can easily connect the signal indicating the driving state of the fan sent out from the terminal so that the first receiver can receive the signal. It becomes possible to grasp the driving state of

  In the active species generation unit according to the third aspect, it is possible to avoid a state in which an excessive amount of active species is generated.

  In the active species generation unit according to the fourth aspect, even when viruses or bacteria that have not been killed remain in the state of being caught by the filter when the fan of the air conditioning unit is stopped, it is possible to further kill these. .

  In the active species generation unit according to the fifth aspect, even when the display output for the air conditioning unit display unit is difficult or impossible, the user can easily grasp the time for replacement or maintenance of the air filter. it can.

It is a schematic block diagram of the air-conditioning unit and active species production | generation unit concerning one Embodiment of this invention. It is a schematic block diagram inside an active species production | generation unit. It is a general | schematic disassembled perspective view of an active species production | generation part. It is sectional drawing of a deodorizing filter. It is a figure which shows a mode that the upstream deodorizing filter and the downstream deodorizing filter are arrange | positioned away. It is a schematic block diagram of the air conditioning unit and active species production | generation unit concerning other embodiment (D). It is a schematic block diagram of the air-conditioning unit and active species production | generation unit concerning other embodiment (J).

  Hereinafter, an embodiment of an active species generation unit that is used by being connected to an air conditioning unit having a fan will be described as an example with reference to the drawings.

(1) Overall Configuration FIG. 1 shows a schematic configuration diagram of an active species generation unit 1 connected to the air conditioning unit 9 via a duct 80.

(1-1) Air conditioning unit 9
The air conditioning unit 9 includes an indoor unit casing 91 installed near the ceiling of the room, an indoor fan 92, an indoor heat exchanger 93, an indoor control unit 94, an indoor unit controller 95, and the like provided therein. is doing. The indoor heat exchanger 93 forms a part of a refrigeration cycle (not shown) through which refrigerant flows. Other components of the refrigeration cycle include a compression mechanism, a heat source side heat exchanger, an expansion mechanism, etc. (not shown). The indoor heat exchanger 93 performs heat exchange between the refrigerant flowing inside and the air passing outside, and harmonizes the air. Air thus harmonized is supplied to the outside of the indoor unit casing 91 (to the indoor space). The indoor control unit 94 operates by receiving power from the external power source 96, and controls the operation of the indoor fan 92 based on commands input by the user to the indoor unit controller 95, information obtained from various sensors (not shown), and the like. I do. The indoor control unit 94 can adjust the drive control of the indoor fan 92 in a plurality of stages, and can select and control the air volume level sent to the indoor heat exchanger 93. The indoor control unit 94 has a connection terminal 94a for sending out a signal indicating a driving state indicating whether or not the indoor fan 92 is driven. In addition, when the indoor fan 92 is driven, an air flow F is generated as shown in each drawing.

(1-2) Duct 80
The duct 80 guides the air to be treated whose temperature is controlled by the air conditioning unit 9, and is provided so as to extend from the indoor unit casing 91 toward the windward side of the indoor fan 92. The end of the duct 80 opposite to the air conditioning unit 9 may be provided to take in indoor air or may be provided to take in outdoor air.

(1-3) Active species generating unit 1
The active species generation unit 1 includes an active species generation unit casing 10 connected in the middle of a duct 80 and an air filter 11 provided therein, as shown in FIG. The pleated filter 13, the deodorizing filter 14, the active species generating unit 12 and the control board 20, a filter sign output unit 23 connected to the control board 20, and an odor sensor 24 are provided.

  The active species generation unit casing 10 has an upstream opening 10a that opens to the upstream side in the air flow direction, and an outlet opening 10b that opens to the downstream side in the air flow direction, and is connected to the duct 80, respectively. . The active species generating unit casing 10 houses therein an active species generating unit 12, a pleat filter 13, and a deodorizing filter 14.

  The air filter 11 is disposed on the upstream side in the active species generating unit casing 10 and captures relatively large dust collection in the air.

  The active species generating unit 12 is disposed downstream of the upstream opening 10 a of the active species generating unit casing 10 in the air flow direction and upstream of the pleat filter 13 and the deodorizing filter 14. As shown in FIG. 2, the active species generating unit 12 includes a linear electrode 12 a, a counter electrode 12 b, and a discharge casing 15. The discharge casing 15 includes a linear electrode side casing 15a and a counter electrode side casing 15b that are fitted to each other. The linear electrode 12 a and the counter electrode 12 b are accommodated in the discharge casing 15. The linear electrode 12a has four needle-like needle portions N. The counter electrode 12b has a plurality of electrode openings 12h. The counter electrode side casing 15b has a casing opening 15bh provided at a position overlapping the electrode opening 12h of the counter electrode 12b in a state where the counter electrode 12b is accommodated in the discharge casing 15. As shown in FIG. 1, the active species generation unit 12 receives power from an external power supply 25 and discharges by applying a voltage between the linear electrode 12a and the counter electrode 12b. A streamer discharge is generated from the needle-like portion N of 12a toward the counter electrode 12b. Active species are generated by this streamer discharge. The active species generated by the streamer discharge pass through the electrode opening 12h of the counter electrode 12b and the casing opening 15bh of the counter electrode side casing 15b, and are carried downstream by the air flow F. In addition, with the generation of active species in this way, ozone is generated from oxygen present in the air.

  The pleated filter 13 is made of a filter medium such as polypropylene and can adsorb viruses and bacteria. Viruses and bacteria adsorbed on the pleated filter 13 are inactivated, killed, and removed by supplying active species generated by discharge by the active species generating unit 12.

  The deodorizing filter 14 includes an upstream deodorizing filter 14a disposed on the upstream side, and a downstream deodorizing filter 14b disposed on the downstream side with a predetermined interval from the upstream deodorizing filter 14a. Yes. The upstream deodorization filter 14a and the downstream deodorization filter 14b are configured such that activated carbon as an adsorbent is supported on a support having a substantially corrugated cut surface in a plane perpendicular to the air flow direction. Odor components that could not be captured by the pleated filter 13 can be adsorbed. The odor component adsorbed here is decomposed by supplying ozone generated from the active species generated by the discharge in the active species generating unit 12.

  As shown in FIG. 4, the upstream deodorization filter 14 a and the downstream deodorization filter 14 b are configured by laminating a plurality of plate-like members having a substantially corrugated cross section in the thickness direction. As shown in FIG. 4, the thickness LT per plate member is about 2 to 5 mm. Further, the interval LB per unit wave of the corrugated shape of the plate member is about 4 to 10 mm as shown in FIG. A plurality of spaces partitioned by the plate-like member and the wave-like member arranged curved in the thickness direction of the plate-like member are air in the upstream deodorization filter 14a and the downstream deodorization filter 14b. Each extends independently from the upstream side to the downstream side in the flow direction. As a result, the upstream side deodorizing filter 14a and the downstream side deodorizing filter 14b are provided with a plurality of fine flow paths R1, R2, and R3 that independently extend in the air flow direction.

  The upstream deodorizing filter 14a is provided with an upstream photocatalyst portion 14aa which is a layer containing a photocatalyst applied to the upstream end surface in the air flow direction. This photocatalyst is a photocatalyst titanium apatite, and the odor component, harmful component (for example, formaldehyde), organic compound, virus, bacteria, etc. that could not be captured by the pleat filter 13 are obtained from other parts of the pleat filter 13 and the deodorizing filter 14. Can also be strongly adsorbed. The odor components, harmful components (for example, formaldehyde), organic compounds, viruses, and bacteria adsorbed here are decomposed by the active species generated by the discharge by the active species generating unit 12 and the ozone generated by the active species. Inactivated, killed, removed. Furthermore, since the photocatalyst is activated by receiving the supply of active species, the effects of the decomposition, inactivation, killing, and removal can be further enhanced. As shown in FIG. 5, the upstream photocatalyst portion 14aa is provided so as to border the upstream end portion of the member constituting the upstream deodorizing filter 14a without blocking the entire upstream end surface of the upstream deodorizing filter 14a. It has been. The thickness of the upstream photocatalyst portion 14aa in the air flow direction is 100 μm. Moreover, as shown in FIG. 5, the thickness L1 in the air flow direction of the upstream deodorizing filter 14a is 5 to 120 mm.

  The downstream deodorizing filter 14b has the same shape, structure, and dimensions as the upstream deodorizing filter 14a, and is configured such that activated carbon as an adsorbent is supported on a carrier having a substantially corrugated cross section. As shown in FIG. 5, the thickness L2 of the downstream deodorizing filter 14b in the air flow direction is the same as the thickness L1 of the upstream deodorizing filter 14a, and is 5 to 120 mm. The downstream deodorizing filter 14b is also provided with a downstream photocatalyst portion 14ba that is a layer containing a photocatalyst applied to the upstream end surface in the air flow direction. This downstream photocatalyst part 14ba is the same component as the upstream photocatalyst part 14aa, and does not block the entire upstream end face of the downstream deodorization filter 14b so as to border the upstream end part of the member constituting the downstream deodorization filter 14b. Is provided. The thickness of the downstream photocatalyst portion 14ba in the air flow direction is 100 μm.

  Note that the distance LD in the air flow direction provided between the downstream end face of the upstream deodorizing filter 14a and the upstream end face of the downstream deodorizing filter 14b (more precisely, the upstream end face of the downstream photocatalytic portion 14ba) is It is 20-30 mm.

  As shown in FIG. 1, the control board 20 operates by receiving power from an external power supply 25, and receives a signal for controlling the active species generating unit 12, and an active species control unit 21. Part 22. A communication line having a connector at the end extends from the fan drive status reception unit 21 and is connected to a connection terminal 94 a provided in the indoor control unit 94 of the air conditioning unit 9. Thereby, the fan drive status receiving part 21 receives the signal which shows the drive status of the indoor fan 92 from the connection terminal 94a by one-way communication. Here, since the connection terminal 94a provided in the indoor control unit 94 of the air conditioning unit 9 is not configured to receive information from the outside (in this case, the active species generation unit 1), as described above. Only one-way communication from the air conditioning unit 9 side toward the active species generation unit 1 side is established. Thus, when the fan drive status receiving unit 21 receives the signal indicating the drive status of the indoor fan 92, the active species control unit 22 provided on the control board 20 is activated based on the received signal. The timing for performing discharge by the seed generation unit 12 is controlled. In addition, the aspect which establishes the one-way communication which goes to the active species production | generation unit 1 side from the air-conditioning unit 9 side is not specifically limited, A wired connection or a wireless connection may be sufficient. For example, in the case of wireless connection, an oscillator is connected to the connection terminal 94a, and a corresponding receiver is connected to the fan drive status receiving unit 21.

  The filter sign output unit 23 is connected to the control board 20 and can output the maintenance timing of the air filter 11. Specifically, the degree of contamination of the air filter 11 is estimated based on the accumulated operation time of the indoor fan 92, and when it is determined that the contamination exceeds a certain condition, the active species control unit 22 causes the air filter The filter sign output unit 23 outputs information indicating that 11 maintenance time has come. Here, it is informed that the maintenance time has come by causing a lamp such as an LED to emit light.

  The odor sensor 24 is the active species generation unit casing 10 and is disposed on the downstream side of the air filter 11 and the upstream side of the pleat filter 13, and detects the concentration of the odor component of the air passing therethrough. The odor sensor 24 is connected to the control board 20 so that the active species control unit 22 can grasp the concentration of the odor component of the air passing around the odor sensor 24. Here, the odor component detected by the odor sensor 24 is, for example, any one of acetaldehyde, hydrogen sulfide, ammonia, formaldehyde and the like.

(2) Start of Discharge by Active Species Generation Unit 12 The active species control unit 22 of the active species generation unit 1 receives the signal indicating the drive status of the indoor fan 92 when the fan drive status reception unit 21 receives the active species generation unit. By starting the discharge by 12, an active species is generated.

In the present embodiment, when the fan drive status receiving unit 21 receives a signal indicating the drive status of the indoor fan 92, the air volume is approximately 500 m ³ / h and the wind speed is approximately 0. 0 depending on the controlled air volume level. An air flow F of about 7 m / sec is generated in the active species generating unit casing 10.

  Specifically, when the fan drive status reception unit 21 receives a signal indicating the drive status of the indoor fan 92, the active species control unit 22 determines whether the active species generation unit 12 is connected between the linear electrode 12a and the counter electrode 12b. The active species are generated by causing streamer discharge from the needle-like portion N of the linear electrode 12a toward the counter electrode 12b. As a result, it becomes possible to control the indoor fan 92 of the air conditioning unit 9 and the active species generating unit 12 of the active species generating unit 1 in conjunction with each other, so that active species can be generated at a necessary timing. ing.

  Here, the amount of active species generated by the active species control unit 22 is determined by fixing the voltage to be applied between the linear electrode 12a and the counter electrode 12b of the active species generating unit 12 to a set value. It is controlled by adjusting the frequency of switching between the applied ON state and the OFF state that is not applied. That is, when trying to increase the amount of active species generated by the active species control unit 22, when attempting to decrease the amount of active species generated while controlling the ON state per unit time to be long Is controlled so as to shorten the ON state per unit time.

  The active species controller 22 controls the active species generator 12 so that the frequency of the ON state to which the voltage is applied increases as the concentration of the odor component detected by the odor sensor 24 increases.

  This active species passes through the electrode opening 12h of the counter electrode 12b and the casing opening 15bh of the counter electrode side casing 15b, and by the air flow F, the pleated filter 13, the upstream photocatalyst portion 14aa, It supplies to the upstream deodorizing filter 14a, the downstream photocatalyst part 14ba, and the downstream deodorizing filter 14b in order.

  The photocatalysts of the upstream photocatalyst part 14aa and the downstream photocatalyst part 14ba are activated by supplying the above-described active species. The activated photocatalyst decomposes or inactivates the components and the like adsorbed by the upstream photocatalyst portion 14aa and the downstream photocatalyst portion 14ba more strongly.

  Of the upstream deodorization filter 14a and the downstream deodorization filter 14b, the odor components adsorbed on the portions other than the upstream photocatalyst portion 14aa and the downstream photocatalyst portion 14ba are decomposed by supplying ozone generated by the active species. .

  As described above, the active species are generated by the active species generating unit 12, and the functions of the pleated filter 13, the upstream photocatalyst unit 14aa, the upstream deodorizing filter 14a, the downstream photocatalyst unit 14ba, and the downstream deodorizing filter 14b are maintained. Yes.

  As shown in FIG. 4, the upstream photocatalyst portion 14aa, the upstream deodorization filter 14a, the downstream photocatalyst portion 14ba, and the downstream deodorization filter 14b have a thickness LT of about 2 to 5 mm per plate member. Since the interval LB per unit wave of the corrugated shape is designed to be about 4 to 10 mm, innumerable small flow paths independent from each other are formed. Thus, by designing the passage area of one channel to be small, the surface area contributing to adsorption can be increased, and the amount of adsorbed component retained can be increased (the concentration of the adsorbent also increases). As a result, the cleaning ability can be improved.

(3) Residual Operation of Active Species Generation Unit 12 As described above, when the fan drive status reception unit 21 receives a signal indicating the drive status of the indoor fan 92, the active species generation unit 12 starts discharging. The active species control unit 22 performs control, but when the fan drive status reception unit 21 receives a signal indicating the stop status of the indoor fan 92, the active species control unit 22 immediately stops the discharge by the active species generation unit 12. Instead, the discharge state by the active species generator 12 is maintained for a predetermined time. Thereby, in the pleat filter 13, the upstream photocatalyst part 14aa, the upstream deodorization filter 14a, the downstream photocatalyst part 14ba, and the downstream deodorization filter 14b, the remaining amount of viruses, bacteria, and odor components is reduced.

(4) Features (4-1)
When the active species generation unit 1 is to be installed at the same time or later with respect to the air conditioning unit 9 that does not have the function of the active species generation unit 1 of the above embodiment, In order to control the active species generation unit 12 in conjunction with each other, it may be necessary to take measures such as separately providing a controller capable of bidirectional communication with the control unit of each unit.

  On the other hand, in the above-described embodiment, a signal sent from the connection terminal 94a that is generally provided in the indoor control unit 94 of the air conditioning unit 9 is provided on the control board 20 of the active species generation unit 1. Since the fan drive status receiving unit 21 is configured to be able to receive, the control of the indoor fan 92 and the active species generating unit 12 can be linked. Moreover, even if the indoor control unit 94 of the air conditioning unit 9 is configured not to receive and process information from the active species generation unit 1 side, the indoor control unit 94 of the air conditioning unit 9 is configured. By simply establishing one-way communication from the connection terminal 94a toward the fan drive status receiving unit 21 of the control board 20 of the active species generating unit 1, the interlock control between the indoor fan 92 and the active species generating unit 12 is easily realized. Be able to.

  Thereby, when the power of the air conditioning unit 9 is turned on, the active species generator 12 does not always discharge, but the indoor fan 92 is driven, and the air containing the cleaning target component is pleated filter 13. In the situation where it is supplied to the deodorizing filter 14, the active species generator 12 can be discharged. Thereby, it can suppress producing | generating an active species unnecessarily and can prevent that an ozone concentration rises too much.

(4-2)
In the active species generating unit 1 of the above embodiment, when the indoor fan 92 and the active species generating unit 12 are linked and controlled, the discharge by the active species generating unit 12 is stopped immediately when the indoor fan 92 stops. Instead, the residual operation is performed to maintain the discharge state by the active species generator 12 for a predetermined time.

  Therefore, in the pleat filter 13, the upstream photocatalyst portion 14aa, the upstream deodorization filter 14a, the downstream photocatalyst portion 14ba, and the downstream deodorization filter 14b, the remaining amount of viruses, bacteria, odor components, and the like can be reduced. At the start of operation of the fan 92, it is possible to prevent leakage of viruses, bacteria, and odor components into the room.

(4-3)
In the active species generation unit 1 of the above embodiment, a filter sign output unit 23 is connected to the control board 20 so that the maintenance timing of the air filter 11 can be output.

  For this reason, the indoor control unit 94 of the air conditioning unit 9 is configured not to receive and process information transmitted from the control board 20 side of the active species generation unit 1. Even when it is not possible to display and output, the active species generation unit 1 has the filter sign output unit 23 as its own output unit, indicating that the maintenance time of the air filter 11 has arrived. Information can be notified to the user.

(4-4)
In general, when the adsorbing component of the member that performs the adsorbing process is densely supported, the flow path through which the air flow passes becomes small, and the air flow resistance of the air flow increases. In particular, when the member that performs the adsorption treatment is long in the air flow direction, such an increase in ventilation resistance becomes significant, and the air is purified despite the dense adsorption component. The ability may decrease.

  On the other hand, in the deodorizing filter 14 of the said embodiment, the several filter divided | segmented into the upstream deodorizing filter 14a and the downstream deodorizing filter 14b is arrange | positioned by providing the space | interval LD in the air flow direction. For this reason, compared with the case where the upstream deodorizing filter 14a and the downstream deodorizing filter 14b are provided integrally, ventilation resistance can be suppressed low.

  Further, by arranging the upstream deodorization filter 14a and the downstream deodorization filter 14b separately in this way, the air that has flowed out through each flow path of the upstream deodorization filter 14a flows into the downstream deodorization filter 14b. To reduce the unevenness of the position where the deodorizing function is exerted, compared to the case where the upstream deodorizing filter 14a and the downstream deodorizing filter 14b are integrally provided. Thus, the entire deodorizing filter 14 can be used evenly.

  Moreover, since the upstream end face can be increased by dividing the deodorizing filter 14 into the upstream deodorizing filter 14a and the downstream deodorizing filter 14b, not only the upstream deodorizing filter 14a but also the downstream deodorizing filter. 14b can be provided. For this reason, compared with the structure which touches a photocatalyst only once, the air cleaning capability can be increased.

(5) Other Embodiments One embodiment of the present invention has been described above with reference to the drawings. However, the present invention is not limited to this, and may be modified as appropriate without departing from the scope of the invention. included.

(A)
In the above embodiment, the case where the active species generation unit 1 is connected to the air conditioning unit 9 via the duct 80 has been described as an example.

  However, the present invention is not limited to this. For example, when the air conditioning unit has a space that can accommodate the active species generating unit, the active species generating unit 12 is incorporated in the air conditioning unit. You may connect both.

(B)
In the above-described embodiment, the control in which the discharge in the active species generation unit 12 is continued for a while after the drive of the indoor fan 92 is stopped by performing the residual control has been described as an example.

  However, the present invention is not limited to this.

  For example, the discharge control in the active species generation unit 12 may be any control that is controlled in relation to the driving status of the indoor fan 92, and may be control synchronized with the driving status of the indoor fan 92, for example. The control may be such that the discharge is intermittently performed only while the indoor fan 92 is being driven.

(C)
In the above embodiment, an example is a residual operation in which the active species generator 12 that has been discharged when the indoor fan 92 is stopped continues to discharge for a predetermined time even after the indoor fan 92 has stopped. And explained.

  However, the present invention is not limited to this.

  For example, such a control that there is a state in which the discharge by the active species generation unit 12 is stopped even during the operation of the indoor fan 92, such as intermittent discharge by the active species generation unit 12 during the operation of the indoor fan 92. It may be done. And even if it is in the state where discharge by active species generating part 12 was not performed at the time of indoor fan 92 stopping, unlike residual operation of the above-mentioned embodiment, after indoor fan 92 was stopped, active species You may make it start discharge by the production | generation part 12 and continue discharge for a while (until predetermined time or predetermined conditions are satisfy | filled).

  In addition, the length of time from when the indoor fan 92 stops until the discharge by the active species generating unit 12 during the remaining operation may be a predetermined time, or the indoor fan 92 is driven. The time length may be proportional to the previous accumulated operation time.

(D)
The above embodiment has been described by taking as an example a case where it is assumed that the information regarding the driving status of the indoor fan 92 acquired by the receiving unit via the connection terminal 94a is correct.

  However, the present invention is not limited to this.

  For example, as shown in FIG. 6, an active species generating unit in which a wind speed sensor 297, a wind speed receiving unit 226, an active species control unit 222, and a fan drive status receiving unit 21 similar to the above-described embodiment are provided on the control board 220. 201 may be sufficient.

  The wind speed sensor 297 is provided in a portion where the air flow F is generated (in FIG. 6, the inside of the air conditioning unit 9 is illustrated), and detects the speed of the air flow F passing therethrough. The wind speed receiving unit 226 receives a signal from the wind speed sensor 297. The active species control unit 222 grasps whether or not the air conditioning unit 9 is going to drive the indoor fan 92 based on the signal received by the fan drive status reception unit 21 and based on the signal received by the wind speed reception unit 226. To ascertain whether or not the air flow F actually occurs. Thereby, although the active species control unit 222 is trying to drive the indoor fan 92 by the air conditioning unit 9, the wind speed of the air flow F actually generated is predetermined according to the signal received by the wind speed receiving unit 226. When it is determined that the state is less than the wind speed, the active species control unit 222 stops the discharge by the active species generation unit 12.

  As a result, a signal indicating that the indoor fan 92 is being driven is received from the connection terminal 94a of the air conditioning unit 9 in spite of the fact that the air flow F is not actually generated for some reason. It is possible to suppress discharge by the seed generation unit 12, and it is possible to avoid a state where an excessive amount of active species is generated.

  Note that the active species control unit 222 may reduce the discharge amount by the active species generation unit 12 instead of stopping the discharge by the active species generation unit 12.

(E)
In the above embodiment, the air conditioning unit 9 that can send out a signal indicating whether or not the indoor fan 92 is driven from the connection terminal 94a has been described as an example.

  However, the present invention is not limited to this.

  For example, the signal that can be sent out from the connection terminal 94a is not limited to information on whether or not the indoor fan 92 is being driven, and may be a signal that can also grasp the air volume level. Even in this case, the active species control unit 22 can perform the discharge control by the active species generation unit 12 according to the driving state of the indoor fan 92. Further, when the fan drive status receiving unit 21 can also receive the air volume level of the indoor fan 92, the active species control unit 22 controls the discharge amount of the active species generating unit 12 according to the air volume level of the indoor fan 92. You may do it.

(F)
In the said embodiment, the case where the deodorizing filter 14 was comprised by the some filter of the upstream deodorizing filter 14a and the downstream deodorizing filter 14b was mentioned as an example, and was demonstrated.

  However, the present invention is not limited to this.

  For example, when it is desired to reduce the pressure loss, or when only one deodorizing filter is provided, the required cleaning ability can be sufficiently achieved, and only one may be provided.

(G)
In the said embodiment, the photocatalyst titanium apatite was mentioned as an example and demonstrated as a photocatalyst in the deodorizing filter 14. FIG.

  However, the photocatalyst in the above embodiment may be, for example, titanium oxide.

(H)
In the above embodiment, the case where activated carbon is supported as the adsorbent in the deodorizing filter 14 has been described as an example.

  However, the adsorbent in the above embodiment may be, for example, silica gel or zeolite.

(I)
In the above embodiment, the amount of the active species generated by the active species control unit 22 is adjusted according to the concentration of the odor component detected by the odor sensor 24 with respect to the frequency of application of the fixed voltage to the active species generation unit 12. The case has been described as an example.

  On the other hand, the amount of the active species generated by the active species control unit 22 is, for example, a higher voltage applied to the active species generating unit 12 as the concentration of the odor component detected by the odor sensor 24 is higher. You may control so that it may become.

(J)
In the above embodiment, the case where the active species control unit 22 adjusts the amount of the active species generated in the active species generating unit 12 according to the concentration of the odor component detected by the odor sensor 24 has been described as an example.

  On the other hand, for example, as shown in FIG. 7, an active species generation unit 301 having an ozone sensor 27 may be used.

  The ozone sensor 27 is disposed in the active species generation unit casing 10 on the downstream side of the pleat filter 13 and the upstream side of the deodorizing filter 14, and detects the concentration of ozone contained in the passing air. The ozone sensor 27 is connected to the control board 20 so that the active species control unit 22 can grasp the ozone concentration of the air passing around the ozone sensor 27. Here, the ozone detected by the ozone sensor 27 is mainly derived from the active species generated by the active species generating unit 12.

  In addition, although the pleat filter 13 is easy to let ozone pass, since the deodorizing filter 14 consumes ozone for deodorizing, it is hard to let ozone pass. However, if the active species generating unit 12 generates more active species than necessary, ozone may leak through the deodorizing filter 14 to the indoor side. Therefore, in this other embodiment (J), the active species control unit 22 suppresses the frequency of applying a fixed voltage to the active species generation unit 12 when the ozone concentration detected by the ozone sensor 27 is high. I have control. Thereby, it is possible to suppress the generation of ozone more than necessary and the outflow to the indoor side.

  The active species control unit 22 gives priority to the control according to the ozone concentration detected by the ozone sensor 27 over the control according to the concentration of the odor component detected by the odor sensor 24. That is, even if the odor component increases, the generation of active species is suppressed when ozone is likely to flow out indoors.

  Other configurations are substantially the same as those in the above embodiment.

  The active species generation unit of the present invention is particularly useful, for example, when it is additionally installed on an air conditioning unit having a fan.

1 Active Species Generation Unit 9 Air Conditioning Unit 11 Air Filter 12 Active Species Generation Unit 13 Pleated Filter (Filter)
14 Deodorizing filter 20 Control board (board)
21 Fan drive status receiver (first receiver)
22 Active species control unit (control unit)
23 Filter sign output unit (display unit for active species generation unit)
92 Indoor fans (fans)
94 Indoor control unit 94a Connection terminal (terminal)
95 Indoor unit controller (display unit for air conditioning unit)
201 Active Species Generation Unit 222 Active Species Control Unit (Control Unit)
226 Wind speed receiver (second receiver)
297 Wind Speed Sensor 301 Active Species Generation Unit

JP-A-8-131880

Claims (5)

An active species generation unit (1, 201, 301) connected to an air conditioning unit (9) having a fan (92),
A filter (13) for capturing viruses or bacteria contained in the air flow generated by the fan (92);
An active species generating unit (12) for generating active species for inactivating the virus or bacteria captured by the filter (13) by discharge;
A first receiver (21) for receiving a signal indicating a driving state of the fan (92);
Based on the signal received by the first receiver (21), it is determined whether or not the fan (92) is being driven, and when it is determined that the fan (92) is being driven, the active species A controller (22) for starting discharge by the generator (12);
An active species generating unit (1, 201, 301). The air conditioning unit (9) has a terminal (94a) for sending out a signal indicating the driving state of the fan (92),
The first receiving unit (21) is connected to the terminal (94a) to receive a signal indicating a driving state of the fan (92) sent out from the terminal (94a).
The active species generating unit (1, 201, 301) according to claim 1. A wind speed sensor (297) for detecting the speed of the air flow generated by the fan (92);
A second receiver (226) for receiving a signal from the wind speed sensor (297);
Further comprising
The control unit (222) is configured to drive the fan (92) based on signals received by the first receiving unit (21) and the second receiving unit (226). 2 When it is determined that the wind speed grasped by the receiver (226) is less than the predetermined wind speed, the discharge in the active species generator (12) is reduced or stopped,
The active species generation unit (201) according to claim 1 or 2. The control unit (22)
Whether the active species generator (12) continues to discharge until the first condition is satisfied after the first receiver (21) stops receiving the signal indicating the driving state of the fan (92). ,
Or
After the first receiving unit (21) no longer receives a signal indicating the driving state of the fan (92), the discharge of the active species generating unit (12) in the discharge stopped state is resumed to perform a predetermined second condition. Continue to discharge until
The active species generation unit (1, 201, 301) according to any one of claims 1 to 3. An air filter (11) provided to pass an air flow generated by the fan (92);
The air conditioning unit (9) has an air conditioning unit display unit (95) for displaying and outputting an operating state,
An active species generating unit display unit (23) connected to the control unit (22), for displaying and outputting a state related to the air filter (11) separately from the air conditioning unit display unit (95). Prepared,
The active species generation unit (1, 201, 301) according to any one of claims 1 to 4.

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