JP2009228992A - Filter clogging monitoring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter clogging monitoring device detecting clogging in a filter member and notifying a user when clogging occurs in the filter member that removes contaminated substances in an exhaust flow discharged from the indoor side to the outdoor side. <P>SOLUTION: The filter clogging monitoring device is equipped with an electric blower 6 in a downstream space 15 of a deodorizing filter 5 for removing an malodor component in the exhaust flow G discharged to the outdoor side through a blow duct 1, a pressure detecting sensor 11 disposed in the downstream space 15 and detecting static pressure of the exhaust flow G, a determination means 12 for comparing a detected static pressure value P<SB>n</SB>with a static pressure value P and making a determination, a timer circuit 13 for accumulating a time when it has been determined that there is a change in the static pressure of the exhaust flow G by the determination means 12, and a notifying means 14 for notifying the user of the occurrence of clogging in the deodorizing filter 5 when an accumulated time T<SB>Σn</SB>reaches a set time T or exceeds the set time T. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a filter clogging monitoring device that removes contaminants such as odor components and oil components contained in an exhaust flow exhausted indoors to outdoors by the suction force of an electric blower. A deodorizing device that is connected in the middle of the flow path of a ventilation duct that is piped outdoors and that contains a deodorizing filter that removes odorous components in the exhaust flow, together with an electric blower, in a case body having a suction port and a discharge port Alternatively, the present invention relates to a filter clogging monitoring apparatus in a range hood that is installed almost directly above a heating cooker and removes a fat and oil component in an exhaust stream generated during cooking in a hood.

In recent years, there are many areas where houses are approaching due to housing circumstances, and in apartment houses, etc., each house is separated by a narrow passage.
For this purpose, exhaust flows exhausted from each home through the air duct, such as oil, steam, waste gas, etc. generated during cooking are exhaust ports provided on the outer wall from the range hood through the air duct. When the air is exhausted to the outside, the exhaust air exhausted to the outside may be sucked into the room of an adjacent house, and the neighbors are not allowed due to pollutants such as odor components contained in the exhaust air flow. There is a risk of giving pleasure.
That is, when the exhaust port of one adjacent house and the air supply port (ventilation port) provided on the outer wall of the other house are close to each other, during cooking that is exhausted from the exhaust port, etc. The exhaust flow may be sucked into the next house from the air intake.
Therefore, in recent years, it is desired to exhaust the odor component contained in the exhaust stream after deodorizing (deodorizing) it.

Therefore, there is known a range hood having a deodorizing (deodorizing) function for removing odor components disclosed in Patent Document 1 and Patent Document 2 from the exhaust stream to make them non-brominated.
The range hood having the deodorizing function disclosed in Patent Document 1 and Patent Document 2 can be said to be an effective measure because the exhaust stream can be exhausted outdoors in a substantially non-brominated state after deodorizing odor components. .

However, the provision of a deodorizing device (deodorizing mechanism) in the hood of the range hood installed in the room (ceiling) located almost directly above the heating cooker leads to an increase in the size of the hood. There is a tendency that the balance with kitchen shelves (hanging shelves) installed adjacent to (side by side) is poor.
However, in recent years, various kitchens that incorporate Western styles such as counter kitchens and island kitchens have been proposed, and range hoods are subject to design constraints in order to be in harmony with these system kitchens. .
That is, because a range hood having a slim and novel design that is in harmony with a kitchen shelf or the like is attracting attention, it is not preferable to increase the size of the hood body as described above.

Therefore, as disclosed in Patent Document 3, the deodorizing device is installed in the air duct that is piped from the range hood to the exhaust port on the outer wall, so that the range hood is designed to match the system kitchen. A deodorizing system that enables this is also proposed.
Japanese Patent Laid-Open No. 9-220439 (see paragraph numbers 0011 and 0012 and FIG. 1) Japanese Patent Laying-Open No. 2006-97982 (see paragraph numbers 0017, 0018, 0023, and FIGS. 1 and 2) JP 2001-218823 A (refer to paragraph number 0018 and FIG. 1)

By the way, as described above, the odor components contained in the exhaust flow exhausted outdoors from the range hood through the air duct are separated and removed through the deodorizing filter, for example, adsorbed and removed from the exhaust flow by the adsorption action. In the deodorization method that deodorizes (deodorizes), there is a limit to the amount of adsorption of odor components.
In other words, the deodorizing filter is clogged by the gradually accumulated odor components and the adsorption performance of the deodorizing filter is lowered. Therefore, maintenance such as periodically removing and removing the deodorizing filter or replacing with a new deodorizing filter is performed. Is required. In particular, in the case of a range hood, since a large amount of odorous components (odorous substances) are generated during cooking, the deodorizing filter is clogged in a shorter time, and frequent maintenance is required.

However, as disclosed in Patent Document 3, it is psychologically impossible for the user to frequently check the clogged state of the deodorizing filter when the deodorizing device is installed in the middle of the air duct. Yes, the situation is that it is cleaned or replaced with a new one at the time of a general cleaning once every six months.
That is, since the piping of the air duct from the indoor to the outdoor is mainly performed using the space behind the ceiling, the deodorizing device is installed in the midway of the piping of the air duct using the space behind the ceiling. Therefore, when cleaning or replacing the deodorizing filter, it is necessary to remove the inspection port lid provided on the ceiling, look into the back of the ceiling, remove the deodorizing filter from the back of the ceiling, and check for clogging. For this reason, it is psychologically impossible to do frequently.

As described above, conventionally, the deodorizing filter is often continuously used in a clogged state in which the deodorizing performance is lowered, and therefore, the deodorizing apparatus is operated (operated) with 100% performance. In fact, the odor component is not completely deodorized and part of the odor component remains in the exhaust stream and is exhausted outdoors.
Moreover, conventionally, the clogged state of the deodorizing filter of the deodorizing device installed in the middle of the air duct that is an air passage for exhausting the exhaust flow generated during cooking to the outside from the range hood is left unattended. As a result, the exhaust performance of the range hood itself deteriorated.

Therefore, the present invention was devised to solve the above-mentioned problems, and when clogging occurs in a filter member that removes contaminants in an exhaust stream exhausted indoors to outdoors, the clogging occurs. It is an object of the present invention to provide a filter clogging monitoring device that can detect and notify the user of the above.
In addition, the present invention prevents the filter member from being erroneously determined to be clogged due to a temporary environmental change indoors and outdoors, for example, noise caused by outdoor strong winds, and can perform accurate monitoring. The object is to provide a filter clogging monitoring device.
Further, in the present invention, when a deodorizing device for deodorizing odor components in the exhaust flow is installed in the air duct that is piped from the range hood to the outside, a grease filter provided in the range hood, Another object of the present invention is to provide a filter clogging monitoring device capable of detecting clogging of both filter members of a deodorizing filter provided in the deodorizing device and notifying the user.

In order to solve the above problems, in the present invention, a filter member for removing contaminants contained in an exhaust stream exhausted indoors to outdoors, and a downstream side of the filter member, the exhaust stream is disposed. In a facility comprising an electric blower that generates suction force, a monitoring device configured to detect and notify a clogged state of the filter member of the facility,
Detection means for detecting clogging of the filter member, and notification means for notifying that the filter member is in a clogged state when the detection means detects clogging of the filter member. It is characterized by being.
Here, it is preferable that the facility is a deodorizing device that is connected to a ventilation duct that is piped from the indoor to the outdoor, and the filter member is a deodorizing filter.
In addition, it is preferable that the facility is a range hood that collects an exhaust stream generated during cooking and exhausts the exhaust stream to the outside through the air duct, and the filter member is a grease filter.

The detection means is a pressure detection means for detecting a static pressure of the exhaust flow, and includes a determination means for comparing a detected static pressure value detected by the pressure detection means with a set static pressure value. When the determination means determines that there is a change in the static pressure, it is preferable that the notification means notifies that the filter member is in a clogged state.
Further, a differential pressure detecting means can be used as the detecting means for detecting the static pressure of the exhaust flow. In this case, it is preferable to detect the static pressure of the exhaust flow on the upstream side and the downstream side of the filter member accommodated in the facility.

According to such a configuration, the pollutant in the exhaust flow exhausted from the indoor to the outdoor by the suction force (suction force) of the electric blower is removed in the process of passing through the filter member, and the filter member is removed by the adhesion of the pollutant. When clogging is caused, the clogging is detected by the detecting means and notified to the user by the notifying means.
Thereby, the user can perform maintenance such as removing the filter member and washing it, or replacing it with a new one. That is, since the clogging monitoring device can notify the user of the occurrence of clogging of the filter member (maintenance time of the filter member), it is possible to prevent the performance of the filter member from being deteriorated due to clogging.
In this way, when the clogging of the filter member can be notified to the user, for example, when the pollutant in the exhaust stream is an odor component and the filter member is a deodorization filter provided in the deodorization device. Can prevent a decrease in adsorption performance of a deodorizing filter that removes odorous components by adsorption. That is, the deodorizing apparatus can be operated (operated) at a performance close to 100% at all times, and a clean exhaust stream from which the odor components are deodorized can be exhausted outdoors.
In addition, when the pollutant in the exhaust stream is a fat and oil component generated during cooking and the filter member is a grease filter provided in the range hood, the grease filter captures and removes the fat and oil component by contact or collision Performance degradation can be prevented in advance, and the oil hood capture performance and exhaust flow performance degradation due to clogging of the grease filter are prevented in advance, and the range hood is always operated at a performance close to 100% ( Operation).

  Further, when the detection means for detecting clogging of the filter member is a pressure detection means or a differential pressure detection means for detecting the static pressure of the exhaust flow, the detection detected by the pressure detection means or the differential pressure detection means The determination means compares the static pressure value or the detected differential pressure value with the set static pressure value or the set differential pressure value, and changes the exhaust flow static pressure (the detected static pressure against the set static pressure value or the set differential pressure value) When it is determined that there is a change such as a value or a detected differential pressure value being large or small), the notification means notifies the user of the occurrence of clogging of the filter member. Thereby, the occurrence of clogging of the filter member is notified to the user.

Furthermore, by detecting the static pressure of the exhaust flow using the differential pressure detection means, for example, when the equipment is installed and connected to the air duct that is piped indoors to outdoors as described above. The effect of the difference in the pressure loss of the exhaust flow in the air duct, which varies depending on the duct configuration (installation environment), such as the length of the duct of the air duct and the direction of the pipe meandering at a substantially right angle Can be reduced.
That is, although the static pressure value of the exhaust flow in the air duct is different depending on the installation environment of the equipment, the differential pressure value of the static pressure value of the exhaust flow at two locations on the upstream side and the downstream side of the filter member is detected. Since the change in the pressure loss state (clogging state) that the filter gives to the exhaust flow as the filter member is clogged is directly detected, the influence due to the difference in the installation environment can be reduced.
Therefore, the upstream side and the downstream side using the differential pressure detection means are compared with the case where the change in the static pressure of the exhaust flow accompanying the clogging of the filter member is detected only on one of the upstream side and the downstream side of the filter member. It is effective to detect in both directions and can be detected more remarkably.

Further, the present invention includes a timer unit that starts an operation when a count signal is input from the determination unit and starts accumulating time,
The timer means continues to accumulate time while the count signal is output from the determination means without interruption at a predetermined time interval, and the accumulated time reaches a predetermined set time, It is configured to output a notification signal to the notification lamp when the time is exceeded.

According to such a configuration, the occurrence of clogging of the deodorizing filter can be accurately and accurately notified to the user via the notification means without malfunction.
That is, the comparison determination by the determination unit between the detected static pressure value of the exhaust flow continuously output from the pressure detection unit and the set static pressure value is repeated several times within a preset time set in the timer unit. Thus, it is possible to remove noise when the static pressure is detected by the pressure detection means. Thereby, the occurrence of clogging of the deodorizing filter can be accurately and accurately notified to the user via the notification means without malfunction.

  Moreover, in this invention, the said deodorizing apparatus is installed in the middle of piping of the said ventilation duct piped toward the outdoors from the said range hood, It is characterized by the above-mentioned.

According to such a configuration, when the grease filter provided in the range hood and the deodorizing filter provided in the deodorizing device are clogged, the detection by the detection unit and the determination by the detection unit are determined as described above. Thus, the occurrence of clogging of the filter members of both the grease filter and the deodorizing filter is notified to the user by the notification means.
Thereby, as above-mentioned, the fall of the exhaust performance of a range hood can be prevented beforehand, and also the fall of the deodorizing performance of the deodorizing apparatus which deodorizes the odor component which generate | occur | produces in large quantities during cooking can be prevented beforehand.

The filter clogging monitoring device of the present invention is configured as described above, and when the filter member that removes contaminants in the exhaust flow exhausted indoors to the outside is clogged, A clog can be detected and notified to the user.
As a result, the user can perform maintenance such as washing the filter member or replacing it with a new one before the performance of the filter member is significantly reduced. It can be exhausted outdoors as a clean exhaust stream from which contaminants have been removed.
For example, when the pollutant in the exhaust stream is an odor component and the filter member is a deodorization filter of a deodorization device, it is possible to prevent a decrease in adsorption performance of the deodorization filter that adsorbs and removes the odor component. Therefore, the clean exhaust stream from which the odor component is deodorized can be exhausted outdoors.

  Further, in the present invention, the comparison determination by the determination unit between the detected static pressure value of the exhaust flow continuously output from the pressure detection unit and the set static pressure value is performed within a preset time set in the timer unit. By being repeated several times, it is possible to remove noise when the static pressure is detected by the pressure detection means. Thereby, the occurrence of clogging of the deodorizing filter can be accurately and accurately notified to the user via the notification means without malfunction.

Further, in the present invention, when a deodorizing device that adsorbs and removes odorous components in the exhaust flow is installed in the air duct that is piped from the range hood to the outside, the grease filter provided in the range hood The clogging of both filter members of the deodorizing filter provided in the deodorizing device can be detected and notified to the user.
As a result, as described above, the exhaust gas can be exhausted outdoors as a clean exhaust stream from which the odor components are completely deodorized, and the deterioration of the exhaust performance of the range hood due to clogging of the grease filter can be prevented. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a schematic view showing an example of a case where a deodorizing apparatus monitored by the filter clogging monitoring apparatus of the present invention according to the first embodiment is installed behind a ceiling, and FIG. 2 shows the same deodorizing apparatus. FIG.
Here, in an apartment house such as a general house or a condominium, as shown in FIG. 1, it extends over an intake port 2 provided on an indoor (indoor) ceiling or the like and an exhaust port 3 provided on an outdoor (outdoor) outer wall or the like. A filter clogging monitoring device (hereinafter referred to as “clogging” of the deodorizing filter 5 of the deodorizing device B that is connected to the air duct 1 that is piped through a space such as the ceiling back C and is installed in the ceiling back C or the like. An example of A) will be described.

≪Configuration of deodorization device≫
As shown in FIG. 2, the deodorizing apparatus B includes a case body 4, and a deodorizing filter 5 and an electric blower 6 disposed in the case body 4.
The deodorizing apparatus B is operated by the operation unit 101 shown in FIG. 4 described later. When an electric blower (not shown) is installed in the air inlet 2 such as a ceiling, the operation of the electric blower is performed. It can be operated in conjunction with the operation unit.

≪Case body structure≫
The case body 4 is formed in a substantially rectangular shape in plan view having an appropriate volume. As shown in FIG. 2, the case body 4 includes a suction port 4a on one side of the short side and a discharge port 4b on the other side of the short side. Thereby, as shown in FIG. 1, it connects and arrange | positions in the middle of the ventilation duct 1. As shown in FIG.
Further, the case body 4 includes mounting brackets 7 fixed to the ceiling wall or the like directly by screws or suspension bolts at the four corners.

  In addition, although illustration is abbreviate | omitted, the case body 4 is formed so that a part in which the deodorizing filter 5 is installed, or one side whole surface (for example, lower case wall) can be opened and closed by screwing etc. Has been. Thereby, the deodorizing filter 4 can be taken out from the case body 4 when the deodorizing filter 4 is washed or replaced with a new one.

≪Configuration of deodorizing filter≫
FIG. 3 is a perspective view showing a deodorizing filter. Here, description will be made with reference to FIG. 2 as appropriate.
As shown in FIG. 2, the deodorizing filter 5 has a size that can partition the inside of the case body 4 into a suction port 4a side and a discharge port 4b side, and a lattice-shaped support frame 5a having an appropriate thickness. The deodorizing material 5b is arranged in the support frame 5a so as to be arranged in a substantially grid pattern.
As shown in FIG. 3, the support frame 5 a includes a case portion 5 a-1 provided with recesses 8 for accommodating a plurality of deodorizing materials 5 b arranged in a substantially grid pattern, and each recess 8 of the case portion 5 a-1. After the deodorizing material 5b is stored, the lid portion 5a-2 that closes the case portion 5a-1 is formed.

The deodorizing material 5b is formed in the substantially square shape (substantially block shape) matched with the dent 8 of the support frame 5a.
The deodorizing material 5b is a continuous porous structure formed using a deodorizing material mainly composed of hydrous magnesium silicate clay mineral. For example, 20-90 parts by weight of attapulgite, 20-90 parts by weight of sepiolite, 20-90 parts by weight of silica as an aggregate, and several parts by weight of methylcellulose as a binder are kneaded by a wet method and molded by extrusion molding, and then dried. Therefore, the honeycomb structure is fired at 500 ° C. or lower (see the enlarged view of FIG. 3).
Thereby, the odor component contained in the exhaust stream G is removed by the decomposition action.

In addition, although illustration is abbreviate | omitted, the deodorizing filter 5 is formed so that attachment or detachment is possible in the fixed position in the case body 4 by screwing or other attachment means.
The deodorizing material 5b is provided in the case body 4 by mixing photocatalyst powders such as titanium oxide, manganese oxide, tungsten oxide, zinc oxide, and copper oxide in the kneading step described above in addition to the materials described above. The removal of the odorous component contained in the exhaust stream can be promoted by the decomposition action of the photocatalyst powder by the ultraviolet light irradiated from the light source such as a black light (not shown) and the reflection plate.

≪Configuration of electric blower≫
The electric blower 6 has a known structure.
That is, as shown in FIG. 2 and FIG. 13 to be described later, a fan motor (AC motor) 6b is attached to a fan casing 6a formed in a volute shape in a substantially coaxial upright manner. The exhaust fan 6c is attached to the motor shaft of the fan motor 6b that faces the motor casing 6a in the fan casing 6a substantially coaxially. The exhaust fan 6c is a sirocco fan.
As shown in FIG. 2, the electric blower 6 includes a suction port 10 that is opened in a substantially trumpet shape on the same axis as the motor shaft by a bell mouth 9 on one side wall surface of the fan casing 6 a. .

And, as shown in FIG. 2, the electric blower 6 formed in this way has the opening of the fan casing 6a faced to the outside from the other side (downstream side) of the short side of the case body 4, It is arranged in the case body 4.
Thus, the electric blower 6 sucks into the suction port 4a side of the case body 4 connected to the blower duct 1 through the deodorizing filter 5 by the suction force generated at the suction port 10 of the fan casing 6a by the rotation of the exhaust fan 6c. By generating a force, the indoor (indoor) exhaust flow G sucked and collected in the air duct 1 from the air inlet 2 is sucked into the case body 4 from the air inlet 4a and passes through the deodorizing filter 5. The exhaust flow G flowing toward the downstream space 15 is discharged into the downstream air duct 1 from the discharge port 4b connected to the air duct 1 through the fan casing 6a.

<< Configuration of Monitoring Device According to First Embodiment >>
FIG. 4 is a functional block diagram showing a schematic configuration of the monitoring apparatus of the present invention according to the first embodiment. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
The monitoring device A monitors the clogged state (degree) of the deodorizing filter 5 (deodorizing material 5b) during the operation of the deodorizing device B, and the deodorizing filter 5 is clogged (for example, clean with no clogging at all). When the degree of clogging is 60% from the normal state), the user is informed that the deodorizing filter 5 is clogged.

As shown in FIG. 4, the monitoring device A is based on a pressure detection sensor 11 as pressure detection means for detecting the static pressure of the exhaust flow G, and a detected static pressure value P _n detected by the pressure detection sensor 11. The microcomputer 100 includes a microcomputer 100 that determines the degree of clogging of the deodorizing filter 5 and notifies the user when it is determined that the deodorizing filter 5 is clogged.

As shown in FIG. 4, the microcomputer 100 includes a determination unit 12 that compares a detected static pressure value P _n detected by the pressure detection sensor 11 with a preset static pressure value P, and this determination unit. 12, when the static pressure is determined to have changed, the timer means 13 that starts operation and accumulates (counts) time, and the accumulated time T _Σn by the timer means 13 is a predetermined set time T Or when the set time T is exceeded, the deodorizing filter 5 is clogged and the deodorizing filter 5 is in a maintenance period. Has been.
The pressure detection sensor 11, the determination unit 12, the timer unit 13, and the notification unit 14 are set to function during operation of the deodorizing apparatus B.

Further, as shown in FIG. 4, a driving operation unit 101 for starting and stopping the operation of the deodorizing device B, and a command signal for starting and stopping operation by operating the driving operation unit 101 are input to the microcomputer 100. When the operation is performed, an operation circuit 102 for controlling the start and stop of the operation of the deodorizing apparatus B is provided.
The driving operation unit 101 is provided on the wall surface of the room where the deodorizing apparatus B is installed in the ceiling C, similarly to the lighting switch.

≪Configuration of pressure detection sensor≫
The pressure detection sensor 11 includes a Venturi tube, a Pitot tube, or a Bourdon tube, and a diaphragm type pressure sensor, and detects the static pressure of the exhaust flow G while the electric blower 6 of the deodorizing device B is in operation. The detected static pressure value _Pn is output to the determination means 12.
The pressure detection sensor 11 is arranged in a downstream space (blower installation space) 15 of the deodorizing filter 5 in the case body 4 of the deodorizing apparatus B shown in FIG. The static pressure of the exhaust gas flow G flowing in is detected.
That is, when clogging of the deodorizing filter 5 proceeds, the static pressure of the exhaust flow G in the air duct 1 and the case body 4 of the deodorizing device B changes. Thereby, the clogging information of the deodorizing filter 5 can be accurately obtained by detecting the change in the static pressure of the exhaust flow G.

  The pressure detection sensor 11 is set in a detection circuit (not shown) so as to detect static pressure at a predetermined time interval Δt, for example, at an interval of about 1 to 4 seconds.

  The pressure detection sensor 11 is disposed in the air duct 1 on the downstream side of the electric blower 6 or upstream of the deodorizing filter 5 (on the suction port 4a side of the case body 4) so as to detect the static pressure of the exhaust flow G. It can also be.

<< Configuration of judgment means >>
Judging means 12, during the operation of the deodorizing apparatus B (electric blower 6), comparing the detected static pressure P _n coming output from the pressure detection sensor 11 and the set static pressure P, the detection static pressure value P _n Is smaller than the set static pressure value P, it is determined that the deodorizing filter 5 is clogged, and a count signal is output to the timer means 13.
Further, the determination unit 12 continuously compares the detected static pressure value P _n output from the pressure detection sensor 11 at a predetermined time interval Δt and the set static pressure value P during the operation of the deodorizing apparatus B. The detected static pressure value P _n is determined to be smaller or larger than the set static pressure value P.

≪Configuration of timer means≫
The timer means 13 is configured to start operation when a count signal is input from the determination means 12, and to start time accumulation (count).
The timer means 13 continues to accumulate time while the count signal from the determination means 12 is output without interruption at a predetermined time interval Δt, and this accumulated time T _Σn is set in advance. When the time T is reached or exceeded, a notification signal is output to the notification means 14.
Here, the cumulative time T _Σn is a predetermined time interval Δt at which the count signal is output from the determination unit 12 and an output cumulative time T _{Σn−1 of} the count signal output from the determination unit 12 until the previous time. Cumulative.

When the count signal is interrupted before the accumulated time T _{Σn of the} count signal output from the determining means 12 at a predetermined time interval Δt reaches the set time T, the timer means 13 accumulates. The operation is stopped while the time T _Σn is reset (initialized).
For example, assuming that the set time T is about 60 seconds and the predetermined time interval Δt is 2 seconds, when the accumulated time T _Σn reaches 8 seconds after the accumulation of the time has started, the determination means 12 to the timer circuit 13 When the output of the count signal is interrupted, the accumulated time T _Σn , 8 seconds is reset to 0, and the operation of the timer circuit 13 is stopped.
As a result, the timer unit 13 starts its operation when a new count signal is output from the determination unit 12, and starts to accumulate time from zero.

By using the timer means 13 configured in this manner, the occurrence of clogging of the deodorizing filter 5 can be accurately and accurately detected by the user via the notification lamp 14-1 of the notification means 14 without malfunction. Can be well informed.
In other words, the comparison determination by the determination unit 12 between the detected static pressure value P _n of the exhaust flow G continuously output from the pressure detection sensor 11 and the set static pressure value P is set in the timer unit 13 in advance. By repeating several times within the time T, noise when the pressure detection sensor 11 detects static pressure can be removed. Thereby, the determination means 12 determines the occurrence of clogging of the deodorizing filter 5 without malfunction, outputs a notification signal to the notification means 14, accurately and accurately to the user via the notification lamp 14-1. Can be well informed.

≪Configuration of notification means≫
The notification means 14 serves to notify the user that the deodorizing filter 5 of the deodorizing device B is clogged when receiving the notification signal output from the timer means 13.
The notification means 14 includes a notification lamp 14-1 from a light emitting diode, an incandescent bulb, a halogen lamp, a fluorescent lamp, an HID lamp, or the like. Thereby, it is comprised so that it may alert | report to a user that the deodorizing filter 5 is the maintenance time of a clogging state by lighting or blinking the notification lamp 14-1.
The notification lamp 14-1 is installed on a ceiling, a wall surface, or the like, and is turned on when a lighting command is received from the notification means 14, and is turned off when a light-off command is received.

[Description of operation]
Next, filter clogging monitoring of the deodorizing apparatus B by the monitoring apparatus A according to the first embodiment configured as described above will be described.
FIG. 5 is a flowchart showing an example of the clogging monitoring operation of the deodorizing device (deodorizing filter) by the monitoring device.

When the user operates the operating unit 101 to operate the deodorizing apparatus B, the exhaust flow G is sucked and collected from the air inlet 2 into the air duct 1, and passes through the air duct 1 toward the outdoor air outlet 3. Flowing. At this time, the exhaust flow G is introduced into the case body 4 from the suction port 4a of the case body 4 by the electric blower 6 of the deodorizing device B installed in the middle of the deodorization device B, and is disposed on the suction port 4a side. When passing through 5, the odor component in the exhaust stream G is deodorized by the deodorizing material 5b.
By passing through the deodorizing filter 5, the purified exhaust flow G is sucked into the fan casing 6a from the suction port 10 of the electric blower 6, and passes through the downstream air duct 1 connected to the discharge port 4b. The air is exhausted from the outdoor exhaust port 3.

In this way, the static pressure of the exhaust flow is monitored by the monitoring device in the downstream space of the deodorizing filter 5 during the operation of the deodorizing device B in which the odor components in the exhaust flow G are deodorized by the deodorizing filter 5.
Specifically, during operation of the deodorizing apparatus B, the static pressure of the exhaust flow G that has passed through the deodorizing filter 5 and flows into the downstream space 15 is detected by the pressure detection sensor 11 (step 16), and the detected static pressure value detected. P _n is output to the determination means 12. When the detected static pressure value P _n is input to the determining means 12, a determination is made to compare the detected static pressure value P _n by the determining means 12 with the set static pressure value P (step 17). At this time, the detection by the pressure detection sensor 11 and the determination by the determination means 12 are continuously repeated at a predetermined time interval (for example, an interval of about 1 to 4 seconds) Δt.
When the determination means 12 determines that the detected static pressure value P _n is smaller than the set static pressure value P (determined as YES), a count signal is output to the timer circuit 13. When the count signal is input from the determination means 12, the timer means 13 starts operation and accumulates time (step 18). At this time, if it is determined that the detected static pressure value P _n is greater than the set static pressure value P (determined as NO), the process returns to step 16. At this time, the accumulated time _TΣn that has not reached the set time T is reset (step 19).

Accumulation of time by the timer means 13 is executed, and when the accumulated time _TΣn reaches or exceeds the set time T (step 20), a notification signal is output from the timer means 13 to the notification means 14. The notification means 14 turns on the notification lamp 14-1 in response to the notification signal (step 21).

As described above, according to the monitoring device A according to the first embodiment, when the odor filter 5 of the odor device B installed in the ceiling back C or the like is clogged, the exhaust flow G generated by the pressure detection sensor 11 is reduced. The deodorizing filter 5 is clogged accurately and accurately by detecting the static pressure, comparing and determining the detected static pressure value _Pn and the set static pressure value P by the determining means 12, and removing the noise by the timer means 13. The user can be notified by the notification means 14 (lighting of the notification lamp 14-1).

<< Configuration of Monitoring Device According to Second Embodiment >>
FIG. 6 is a functional block diagram showing a schematic configuration of the monitoring apparatus of the present invention according to the second embodiment. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
The monitoring device A-1 according to the second embodiment is configured by using an air volume detection sensor 22 that detects the air volume of the exhaust flow G as a detection unit that detects the occurrence of clogging of the deodorizing filter 5. Since the same reference numerals are given to the same components since the components are basically the same as those in the first embodiment, the duplicated explanation is omitted.

That is, as shown in FIG. 6, the monitoring device A-1 uses an air volume detection sensor 22 that is an air volume detection means for detecting the air volume of the exhaust flow G and a detected air volume value Q _n detected by the air volume detection sensor 22. The microcomputer 100 is configured to determine the degree of clogging of the deodorizing filter 5 based on the microcomputer 100 and notify the user when it is determined that the deodorizing filter 5 is clogged.

As shown in FIG. 6, the microcomputer 100 includes a determination unit 12 that compares the detected air volume value Q _n detected by the air volume detection sensor 22 with a preset air volume Q, and the determination unit 12 determines the air volume. When it is determined that there is a change, the timer means 13 that starts the operation and accumulates (counts) time, the accumulated time T _Σn by the timer means 13 reaches a predetermined set time T, When the set time T is exceeded, the deodorizing filter 5 is clogged, and the notification means 14 for notifying the user that the deodorizing filter 5 is in a maintenance period by turning on the notification lamp 4-1. Each of these functions is built-in.

≪Configuration of air volume detection sensor≫
The air volume detection sensor 22 includes a squeeze type flow meter, a differential pressure type flow meter, a float type flow meter, a hot wire type flow meter, and the like. The detected air volume value Q _n detected is output to the determination means 12.
This air volume detection sensor 22 is disposed in the downstream space 15 of the deodorizing filter 5 in the case body 4 of the deodorizing apparatus B, and the air volume of the exhaust flow G flowing through the deodorizing filter 5 and flowing into the downstream space 15. Is supposed to be detected.

  The air volume detection sensor 22 detects the air volume at a predetermined time interval Δt, for example, an interval of about 1 to 4 seconds, like the static pressure detection sensor 11 described in detail in the first embodiment. It is configured as follows. That is, the air volume of the exhaust flow G in the downstream space 15 is detected at a predetermined time interval Δt by a control program input to a memory (not shown) of the microcomputer 100.

[Description of operation]
Next, filter clogging monitoring of the deodorizing apparatus B by the monitoring apparatus A-1 according to the second embodiment configured as described above will be described.
FIG. 7 is a flowchart illustrating an example of the clogging monitoring operation of the deodorizing device (deodorizing filter) by the monitoring device according to the second embodiment.

During operation of the deodorizing device B, the air volume of the exhaust flow G that has passed through the deodorizing filter 5 and flowed into the downstream space 15 is detected by the air volume detection sensor 22 (step 23), and the detected detected air volume value Q _n is determined. Output to means 12. When the detection air amount value Q _n coming inputted to the determining means 12, the determination for comparing the detected air amount value Q _n by the determining means 12 and the set static pressure Q is executed (step 24). At this time, the detection by the air volume detection sensor 22 and the determination by the determination means 12 are continuously repeated at a predetermined time interval (for example, an interval of about 1 to 4 seconds) Δt.

The determining means 12, whether the detected air amount value Q _n reaches the set air amount value Q, when it is small and the determination (YES as determination) than the count signal is output to the timer circuit 13. The timer circuit 13 starts the operation at the time when the count signal is input from the determination means 12, and executes accumulation of time (step 25). At this time, _{if it} is determined that the detected airflow value Qn is greater than the set value static pressure Q (determined as NO), the process returns to step 23. At this time, the accumulated time _TΣn that has not reached the set time T is reset (step 26).

Accumulation of time by the timer circuit 13 is executed, and when the accumulated time _TΣn reaches or exceeds the set time T (step 27), a notification signal is output from the timer circuit 13 to the notification means 14. The notification means 14 turns on the notification lamp 14-1 in response to the notification signal (step 28).

As described above, according to the monitoring device A-1 according to the second embodiment, when clogging occurs in the odor filter 5 of the deodorizing device B installed on the ceiling or the like, the exhaust flow G generated by the air volume detection sensor 22 is detected. The deodorizing filter 5 is clogged accurately and accurately by detecting the air volume of the air, by comparing and determining the detected air volume value Q _n and the set air volume value Q by the determination means 12, and by removing the noise by the timer circuit 13. Can be notified to the user by the notification means 14 (lighting of the notification lamp 14-1).

<< Configuration of Monitoring Device According to Third Embodiment >>
FIG. 8 is a functional block diagram showing a schematic configuration of the monitoring apparatus of the present invention according to the third embodiment. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
Note that the monitoring device A-2 according to the third embodiment detects the rotation speed of the electric blower 6 (fan motor 6b) of the deodorizing device B as detection means for detecting the occurrence of clogging of the deodorizing filter 5. Since the constituent elements other than those configured by using the rotational speed detecting means are basically the same as those in the first embodiment, the same reference numerals are given to the same constituent elements, and redundant description will be omitted.

That is, as shown in FIG. 8, the monitoring device A-2 detects a rotational speed detection sensor 29 that is a rotational speed detection means that detects the rotational speed of the fan motor 6b of the electric blower 6 and the rotational speed detection sensor 29. A microcomputer 100 for determining the degree of clogging of the deodorizing filter 5 based on the detected rotation numerical value N _n and notifying the user when it is determined that the deodorizing filter 5 is clogged; It is configured.

As shown in FIG. 8, the microcomputer 100 includes a determination unit 12 that compares a detected rotation number N _n detected by the rotation number detection sensor 29 with a preset rotation number N, and the determination unit 12. When it is determined that there is a change in the rotational speed of the electric blower, the timer unit 13 that starts operation and accumulates (counts) time, and the accumulated time T _Σn by the timer unit 13 is set in advance. When the time T is reached or the set time T is exceeded, the deodorizing filter 5 is clogged and the maintenance time for the deodorizing filter 5 is turned on. The notifying means 14 for notifying, each of these functions and the like are incorporated.

≪Configuration of rotational speed detection sensor≫
The rotation speed detection sensor 29 is composed of an optical sensor or the like, detects the rotation speed of the fan motor 6b while the electric blower 6 of the deodorizing apparatus B is in operation, and uses the detected rotation speed value N _n to the determination means 12. It is configured to output.
That is, when the clogging of the deodorizing filter 5 proceeds, the deodorizing device B that is sucked into the air duct 1 from the room by the electric blower (not shown) provided in the ceiling air inlet 2 and connected to the air duct 1. The air volume of the exhaust stream G containing the odorous component flowing into the deodorizing device B from the suction port 4a of the exhaust gas decreases.
Thus, as the airflow resistance (load) of the exhaust flow G with respect to the electric blower 6 (exhaust fan 6c) decreases, the rotational speed of the fan motor 6b increases. For this reason, the clogging information of the deodorizing filter 5 can be obtained by detecting the rotation speed of the fan motor 6b.

  Further, the rotational speed detection sensor 29 detects the rotational speed at a predetermined time interval Δt, for example, an interval of about 1 to 4 seconds, like the static pressure detection sensor 11 described in detail in the first embodiment. Is configured to run. That is, the rotational speed of the fan motor 6b is detected at a predetermined time interval Δt by a control program input to a memory (not shown) of the microcomputer 100.

[Description of operation]
Next, filter clogging monitoring of the deodorizing apparatus B by the monitoring apparatus A-2 according to the third embodiment configured as described above will be described.
FIG. 9 is a flowchart illustrating an example of the clogging monitoring operation of the deodorizing device (deodorizing filter) by the monitoring device according to the third embodiment.

During the operation of the deodorizing apparatus B, the rotation speed of the fan motor 6c of the electric blower 6 is detected by the rotation speed detection sensor 29 (step 30), and the detected rotation speed value N _n is output to the determination means 12. When the detected rotation numerical value N _n is input to the determining means 12, a determination is made to compare the detected rotational numerical value N _n by the determining means 12 with the set rotational numerical value N (step 31). At this time, the detection by the rotation speed detection sensor 29 and the determination by the determination means 12 are continuously repeated at a predetermined time interval (for example, an interval of about 1 to 4 seconds) Δt.

When the determination means 12 determines that the detected rotation value N _n reaches or exceeds the set rotation value N (YES), a count signal is output to the timer circuit 13. The timer circuit 13 starts the operation at the time when the count signal is input from the determination means 12, and executes accumulation of time (step 32). At this time, _{if it} is determined that the detected rotational numerical value N _n is smaller than the set rotational numerical value N (determined as NO), the process returns to step 30. At this time, the accumulated time _TΣn that has not reached the set time T is reset (step 33).

Accumulation of time by the timer circuit 13 is executed, and when the accumulated time _TΣn reaches or exceeds the set time T (step 34), a notification signal is output from the timer circuit 13 to the notification means 14. The notification means 14 turns on the notification lamp 14-1 in response to the notification signal (step 35).

As described above, according to the monitoring device A-2 according to the third embodiment, when the odor filter 5 of the odor device B installed in the space such as the ceiling C is clogged, the rotation speed detection sensor 29 is used. By detecting the number of rotations of the fan motor 6b of the electric blower 6 by means of the above, by comparing and determining the detected rotation number _Nn and the set rotation number N by the determination means 12, and by removing noise by the timer circuit 13, the deodorization can be performed accurately and accurately. The notification means 14 can notify the user that the filter 5 is clogged.

<< Configuration of Monitoring Device According to Fourth Embodiment >>
FIG. 10 is a functional block diagram showing a schematic configuration of the monitoring apparatus of the present invention according to the fourth embodiment. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
The monitoring device A-3 according to the fourth embodiment detects power consumption flowing in the electric blower 6 (fan motor 6b) as detection means for detecting occurrence of clogging of the deodorizing filter 5. Since the constituent elements other than those configured by using the means are basically the same as those in the first embodiment, the same reference numerals are given to the same constituent elements, and redundant description is omitted.

That is, as shown in FIG. 10, the monitoring device A-3 includes a power consumption detection sensor 36 that is power consumption detection means for detecting power consumption flowing in the fan motor 6b, and detection detected by the power consumption detection sensor 36. The microcomputer 100 includes a microcomputer 100 that determines the degree of clogging of the deodorizing filter 5 based on the power consumption W _n and notifies the user when it is determined that the deodorizing filter 5 is clogged. Yes.

As shown in FIG. 10, the microcomputer 100 includes a determination unit 12 for comparing the detected power consumption value W _n detected by the power consumption detection sensor 36 with a predetermined set power consumption value W. When the determination means 12 determines that there is a change in power consumption, the timer circuit 13 that starts operation and accumulates (counts) time, and the accumulated time T _Σn by the timer circuit 13 is set in advance. When the time T is reached or the set time T is exceeded, the deodorizing filter 5 is clogged and the maintenance time for the deodorizing filter 5 is turned on. The notifying means 14 for notifying, each of these functions and the like are incorporated.

≪Configuration of power consumption detection sensor≫
Power detection sensor 36 is made and power meter, while the electric blower 6 is the operation of the deodorizing apparatus B, detects the power consumed by the fan motor 6b, determination means for detecting the power consumption W _n that the detected 12 It is configured to output to.

  The power consumption detection sensor 36 detects the air volume at a predetermined time interval Δt, for example, about 1 to 4 seconds, as in the static pressure detection sensor 11 detailed in the first embodiment. Is configured to do. In other words, the control program input to the memory (not shown) of the microcomputer 100 is set to detect the power consumption flowing through the fan motor 6b at a predetermined time interval Δt.

[Description of operation]
Next, filter clogging monitoring of the deodorizing apparatus B by the monitoring apparatus A-3 according to the fourth embodiment configured as described above will be described.
FIG. 11: is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus which concerns on 4th Embodiment.

During operation of the deodorizing apparatus B, the power consumed by the fan motor 6b of the electric blower 6 is detected by the power detection sensor 36 (step 37), the detected detection power value W _n are the to decision means 12 Is output. When the detected power consumption value W _n is input to the determination unit 12, a determination is made to compare the detected power consumption value W _n by the determination unit 12 with a predetermined set power consumption value W (step). 38). At this time, the detection by the power consumption detection sensor 36 and the determination by the determination means 12 are continuously repeated at a predetermined time interval (for example, an interval of about 1 to 4 seconds) Δt.

When the determination unit 12 determines that the detected power consumption value W _n reaches the set power consumption value W or is smaller than that (determination is YES), a count signal is output to the timer circuit 13. The timer circuit 13 starts the operation at the time when the count signal is input from the determination means 12, and executes accumulation of time (step 39). At this time, _{if it} is determined that the detected power consumption value W _n is greater than the set power consumption value W (determined as NO), the process returns to step 37. At this time, the accumulated time _TΣn that has not reached the set time T is reset (step 40).

Accumulation of time by the timer circuit 13 is executed, and when the accumulated time _TΣn reaches or exceeds the set time T (step 41), a notification signal is output from the timer circuit 13 to the notification means 14. The notification means 14 turns on the notification lamp 14-1 in response to the notification signal (step 42).

As described above, according to the monitoring device A-3 according to the fourth embodiment, when the odor filter 5 is clogged during the operation of the deodorizing device B installed in the ceiling C or the like, the fan motor 6b. The power consumption detected by the power consumption detection sensor 36, the determination power consumption value W _n by the determination means 12 and the comparison of the power consumption value W and the set power consumption value W, and the noise removal by the timer circuit 13 are accurately and accurately performed. The notification means 14 (lighting of the notification lamp 14-1) can inform the user that the deodorizing filter 5 is clogged.

<< Configuration of Monitoring Device According to Fifth Embodiment >>
FIG. 12 is a functional block diagram showing a schematic configuration of the monitoring apparatus of the present invention according to the fifth embodiment. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
The monitoring device A-4 according to the fifth embodiment is a pressure detecting sensor (1) according to the first embodiment described above as a detecting means for detecting the static pressure of the exhaust flow G in the case body 4 of the deodorizing device B. The pressure detection means) is replaced with a differential pressure detection means, and the components other than those using the differential pressure detection means are basically the same as those of the first embodiment, and thus have the same configuration. The duplicated explanation is omitted by giving the same reference numerals to the elements.

That is, as shown in FIG. 12, the monitoring device A-4 includes a differential pressure detection sensor 60 as a differential pressure detection means for detecting the static pressure of the exhaust flow G, and a detection difference detected by the differential pressure detection sensor 60. based on the pressure values S _n determines clogging degree of the deodorizing filter 5, and, indicator lamp 14-1 deodorizing filter 5 is care is determined that the clogging of lighting by the lighting signal from the notification means 14 And a microcomputer 100 that informs the user via the computer.

The microcomputer 100, as shown in FIG. 12, determination means 12 for comparing the detected differential pressure value S _n detected by the differential pressure detection sensor 60, and a set differential pressure value S which is set in advance, the When the determination means 12 determines that there is a change in power consumption, the timer circuit 13 that starts operation and accumulates (counts) time, and the accumulated time T _Σn by the timer circuit 13 is set in advance. When the time T is reached or the set time T is exceeded, the deodorizing filter 5 is clogged and the maintenance time for the deodorizing filter 5 is turned on. The notifying means 14 for notifying, each of these functions and the like are incorporated.

≪Configuration of differential pressure detection sensor≫
The differential pressure detection sensor 60 is a static pressure generated between the upstream side (the suction port 4a side) and the downstream side (the downstream side space 15 side) sandwiching the deodorizing filter 5 in the case body 4 of the deodorizing device B. detecting the differential pressure value, it is configured to output to the determination unit 12 that differential pressure as detected pressure value S _n.
As the differential pressure detection sensor 60, sensors having various structures are known. As an example, for example, a sensor body having a diaphragm therein is provided on the upstream side of the deodorizing filter 5 in the case body 4. Detected when the diaphragm is deformed by the differential pressure of the static pressure between the upstream side and the downstream side, connected to the inlet side (suction port 4a side) and downstream side (downstream space 15 side) via a bypass. It is configured to output a detection pressure value S _n that the determination means 12.

[Description of operation]
Next, filter clogging monitoring of the deodorizing apparatus B by the monitoring apparatus A-4 according to the fifth embodiment configured as described above will be described.
FIG. 13: is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus which concerns on 5th Embodiment.

During the operation of the deodorizing apparatus B, the differential pressure generated between the upstream side (suction port 4 side) and the downstream side (downstream space 15 side) of the deodorizing filter 5 in the case body 4 is detected by the differential pressure detection sensor 60. is detected as a pressure value S _n (step 61), the detected detection pressure value S _n are is output to the decision means 12. When the detection pressure value S _n come inputted to the determining means 12, the determination for comparing the detected differential pressure value S _n by the determining means 12 and the set pressure value S is performed (step 62). At this time, the detection by the differential pressure detection sensor 60 and the determination by the determination means 12 are continuously repeated at a predetermined time interval (for example, an interval of about 1 to 4 seconds) Δt.
The determining means 12, when it is determined that the detected pressure value S _n is larger than the set static pressure S (YES as determination), the count signal is output to the timer circuit 13. When the count signal is input from the determination unit 12, the timer unit 13 starts operation and accumulates time (step 63). At this time, _{if it} is determined that the detected differential pressure value Sn is smaller than the set differential pressure value S (determined as NO), the process returns to step 16. At this time, the accumulated time _TΣn that has not reached the set time T is reset (step 64).

Accumulation of time by the timer means 13 is executed, and when the accumulated time _TΣn reaches or exceeds the set time T (step 65), a notification signal is output from the timer means 13 to the notification means 14. The notification means 14 turns on the notification lamp 14-1 in response to the notification signal (step 66).

As described above, according to the monitoring device A-4 according to the fifth embodiment, if the odor filter 5 of the odor device B installed in the ceiling C or the like is clogged, the deodorization by the differential pressure detection sensor 60 is performed. detection differential pressure S _n detected by the static pressure of the two-way exhaust flow G in two places between the upstream and downstream sides sandwiching the filter _5, and the detection pressure value S _n by the determining means 12 set differential pressure value S And the noise removal by the timer means 13 can notify the user with the notification lamp 14 that the deodorizing filter 5 is clogged accurately and accurately.

In the monitoring device A-4 according to the fifth embodiment, as another embodiment of the differential pressure detection sensor 60, the upstream side (the suction port 4a side) sandwiching the deodorizing filter 5 and the downstream space 15 side are arranged. to the static pressure of the exhaust stream G respectively detected, it calculates a differential pressure value from the upstream static pressure and the downstream static pressure, and outputs the calculated differential pressure value to the determination unit 12 as a detection pressure value S _n It can also be configured.

[Description of Other Embodiments]
FIG. 14 is a schematic diagram illustrating an example in which the deodorizing apparatus B is installed in the middle of the piping of the air duct that is piped outward from the range hood. Here, description will be made with reference to FIGS. 2, 4 and 5 as appropriate.
In such an embodiment, for example, the deodorizing device B whose clogging of the deodorizing filter 5 is monitored by the monitoring device A according to the first embodiment is directed from the range hood D to the outside through the ceiling back C. The example is shown in the middle of the piping of the air duct 1-1 to be piped, and the other components are basically the same as those of the first embodiment, and the same reference numerals are given to the same components. Thus, duplicate explanation is omitted.

  That is, as shown in FIGS. 14 and 15, an air duct 1-1 having one end connected to a range hood D installed almost directly above a heating cooker (not shown) and piped through a space such as the ceiling C The deodorizing device B shown in FIG. 2 is installed in the middle of the pipe, and the monitoring device shown in FIG. 4 is configured to detect clogging of the deodorizing filter 5 of the deodorizing device B by the static pressure of the exhaust flow G. A is used for monitoring.

In this embodiment, the monitoring device A monitors the clogging of the grease filter, which will be described later, of the range hood D.
In this case, clogging of the deodorizing filter 5 of the deodorizing device B and clogging of the grease filter of the range hood are individually monitored by the respective monitoring devices, monitoring of clogging of the grease filter, and monitoring of clogging of the deodorizing filter. Can be used together by a monitoring device.

  In the range hood D, the operation of the exhaust capacity of the electric blower 44, which will be described later, is switched between strong and weak in three stages according to the amount of exhaust gas G generated during cooking. It is configured to be. For this purpose, the operation of the electric blower 6 of the deodorizing device B is synchronized with the three-stage operation of the range hood D, so that the exhaust flow G sucked and captured by the range hood D is taken outside through the air duct 1-1. Can be smoothly exhausted.

≪Configuration of range hood≫
FIG. 15 is a longitudinal sectional view showing an example of a range hood.
The range hood D is a well-known deep type range hood.
That is, as shown in FIG. 14 and FIG. 15, the electric blower 44 is vertically installed with being positioned on the kitchen wall K- 1 side in the deep hood body 43. Thereby, in the front (front side) of the electric blower 44, a capture space 45 for the exhaust flow G that is deep in the height direction (the height direction of the kitchen ceiling K-2) and opened downward is formed. .
As a result, the exhaust flow G generated during cooking and rising toward the range hood D is sucked and captured in the capture space 45 by the suction force of the electric blower 44 and passes through the blower duct 1-1 from the electric blower 44. The air is exhausted from the outdoor exhaust port 3.

As shown in FIG. 13, the range hood D includes a grease filter 46 in front of the electric blower 44 so as to partition the hood body 43 into the electric blower 44 side and the capture space 45 side.
Further, the range hood D is disposed in the front-rear direction of the hood body 43 extending from the lower edge position of the grease filter 46 to the lower side of the electric blower 44 so as to detachably support the lower edge of the grease filter 46. A partition panel 47 is provided to partition the downward opening side and the electric blower 44 side.

≪Composition of food body≫
As shown in FIG. 15, the hood body 43 opens downward from a hood portion 43a having an open front surface and a lower surface and a front panel 43b that is detachably attached to the front opening portion of the hood portion 43a. It is formed in a box shape having a deep capture space 45 in the vertical direction.

≪Configuration of electric blower≫
Since the basic components of the electric blower 44 are the same as those of the electric blower 6 of the deodorizing apparatus B described above, the same components are denoted by the same reference numerals, and redundant description is omitted.
As shown in FIG. 15, the electric blower 44 is vertically mounted in the hood body 43 by being screwed to the upper surface wall of the hood portion 43 a and protrudes from the upper wall toward the kitchen ceiling K-2. One end of the air duct 1-1 is connected to the discharge port 48 of the fan casing 6a.

≪Grease filter configuration≫
FIG. 16 is a perspective view and an enlarged sectional view showing an example of the grease filter.
As is well known, the grease filter 46 has a size that partitions the inside of the hood body 43 into an electric blower 44 side and a capture space 45 side by a slot type, a punching metal type, a mesh type made of a wire mesh or a lath mesh, and the like. It is formed in a flat plate shape.
For example, in the slot type shown in FIG. 16, for example, in the metal thin plate 46a, multiple rows are arranged in one direction orthogonal to the flow direction when the exhaust flow G passes at a pitch interval of several millimeters. A slit 46b is provided. Then, the exhaust flow collision piece 46c, which is a plane portion partitioned by the slits 46b, is cut and raised so as to be refracted toward the one side surface of the metal thin plate 46a without leaving the plane portion. The vent hole 46d inclined toward one direction is opened.

  As shown in FIG. 15, the grease filter 46 configured in this way has a lower end edge detachably engaged with a lower engagement portion 49 provided at the front edge of the partition panel 47, and an upper end The edge is detachably locked to the upper locking portion 50 provided on the upper surface wall of the hood body 43 so that the inside of the hood body 43 can be detachably separated into the electric blower 44 side and the capture space 45 side. Prepared for.

And clogging monitoring of the grease filter 46 of the range hood D comprised in this way can be performed using the monitoring apparatus A which concerns on the said 1st Embodiment. Here, description will be made with reference to FIG. 4 as appropriate.
That is, when monitoring the clogging of the grease filter 46 using the monitoring device A for a range hood, the pressure detection sensor 11 that detects the static pressure of the exhaust flow G is connected between the grease filter 46 and the electric blower 44. Is placed in the downstream space (blower installation space) 51 of the grease filter 46 in FIG. 5 so that the monitoring device A monitors the occurrence of clogging of the grease filter 46 due to the adhesion of the oil and fat components contained in the exhaust flow G. Can do.

[Description of operation]
Here, description will be made with reference to FIG. 5 as appropriate.
During the operation of the range hood D, the monitoring device A performs the clogging monitoring of the grease filter 46 together with the clogging monitoring operation shown in FIG. 5 of the deodorizing filter 5 of the deodorizing device B that operates in synchronization with the range hood D. Can do.
Specifically, the static pressure of the exhaust stream (exhaust material such as oil smoke, hot smoke, waste gas, etc.) G sucked and collected in the hood 43 and passed through the grease filter 46 to the downstream space 51 side is a pressure detection sensor. 11 (step 16), and the detected static pressure value P _n detected is output to the determination means 12. When the detected static pressure value P _n is input to the determining means 12, a determination is made to compare the detected static pressure value P _n by the determining means 12 with the set static pressure value P (step 17). At this time, the detection by the static pressure detection sensor 11 and the determination by the determination means 12 are continuously repeated at a predetermined time interval (for example, an interval of about 1 to 4 seconds) Δt.

When the determination means 12 determines that the detected static pressure value P _n is smaller than the set static pressure value P (determined as YES), a count signal is output to the timer means 13. When the count signal is input from the determination means 12, the timer means 13 starts operation and accumulates time (step 18). At this time, if it is determined that the detected static pressure value P _n is greater than the set static pressure value P (determined as NO), the process returns to step 16. At this time, the accumulated time _TΣn that has not reached the set time T is reset (step 19).

Accumulation of time by the timer means 13 is executed (step 18), and when the accumulated time _TΣn reaches or exceeds the set time T (step 20), a notification signal is output from the timer means 13 to the notification means 14. The The notification means 14 turns on the notification lamp 14-1 in response to the notification signal (step 21).

Thus, according to monitoring device A concerning a 1st embodiment which monitors clogging of grease filter 46 of range hood D, when clogging occurs in grease filter 46 by passage of an exhaust flow which occurs during cooking. The static pressure detection sensor 11 detects the static pressure of the exhaust flow G, the determination means 12 compares the detected static pressure value _Pn with the set static pressure value P, and the timer means 13 eliminates noise, thereby accurately. The notification means 14 can notify the user that the grease filter 46 is clogged with high accuracy.

The specific configuration of the embodiment of the present invention is not limited to each of the above-described embodiments, and there are design changes and the like without departing from the gist of the present invention described in claims 1 to 5. However, it is included in the present invention.
For example, the monitoring devices A, A-1, A-2, A-3, and A-4 can be used as a clogging monitor for a filter member of an air supply device that takes in air from the outdoors.

Further, the pressure detection sensor 11 and the air volume detection sensor 22 can be arranged on the upstream side of the deodorizing filter 5 of the deodorizing apparatus B.
Furthermore, a DC motor can be used as the fan motor 6b of the electric blower 6. In this case, in the monitoring device A-2 according to the third embodiment, the rotational speed of the fan motor 6b can be detected without using the rotational speed detection sensor 29.
Furthermore, examples of the notification means include a buzzer and sound in addition to the lamp.
Moreover, a propeller fan, a turbo fan, etc. can be used as the exhaust fan 6c of the electric blower 6. In this case, a similar function can be provided by configuring the judging means in accordance with the characteristics of the static pressure, the change in the air volume, and the characteristics of the change in the rotational speed of the fan motor.

  Further, in each of the above-described embodiments, it has been shown that the counting (accumulation) of the accumulated time is performed by continuously repeating the count signal from the determination unit. However, when the determination unit 12 first determines that the abnormality is (YES). The timer means 13 outputs a count start signal to the timer means 14, and the timer means 13 automatically continues counting the time according to the count start signal. Thereafter, when the judging means 12 judges normal (NO), the timer means 14 counts. By outputting a stop signal, the timer means 13 can be configured to stop and reset.

  In addition, it is possible to automatically switch the clogging determination value of the filter member by the determination unit 12 according to the three stages of operation states of high operation, middle operation, and weak operation of the electric blower. In other words, the clogging determination value by the determination means 12 is automatically set to three stages of a high operation clogging determination value, a middle driving clogging determination value, and a weak driving clogging determination value in accordance with the three stages of operating states of the electric blower. The clogging of the switched filter member can be monitored. Thereby, it is possible to appropriately monitor the clogging of the filter member in accordance with the three-stage operation state of the electric blower.

It is the schematic which shows the example in case the deodorizing apparatus monitored by the filter clogging monitoring apparatus of this invention which concerns on 1st Embodiment is installed in the ceiling back. It is a cross-sectional view which shows the deodorizing apparatus which concerns on this embodiment. It is a perspective view which shows the deodorizing filter of the same deodorizing apparatus. It is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus which concerns on 1st Embodiment. It is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus. It is a functional block diagram which shows schematic structure of the monitoring apparatus of this invention which concerns on 2nd Embodiment. It is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus. It is a functional block diagram which shows schematic structure of the monitoring apparatus of this invention which concerns on 3rd Embodiment. It is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus. It is a functional block diagram which shows schematic structure of the monitoring apparatus of this invention which concerns on 4th Embodiment. It is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus. It is a functional block diagram which shows schematic structure of the monitoring apparatus of this invention which concerns on 5th Embodiment. It is a flowchart which shows an example of clogging monitoring operation | movement of the deodorizing apparatus (deodorizing filter) by the monitoring apparatus. It is the schematic which shows the example in case the deodorizing apparatus is installed in the middle of piping of the ventilation duct piped from the range hood toward the outdoors. It is a longitudinal cross-sectional view which shows an example of the same range hood. An example of the grease filter of the same range hood is shown, (a) is a perspective view, (b) is an enlarged cross-sectional view taken along the line bb of (a).

Explanation of symbols

A, A-1, A-2, A-3, A-4 Monitoring device B Deodorizing device (equipment)
C Ceiling back D Range hood (equipment)
DESCRIPTION OF SYMBOLS 1,1-1 Air duct 2 Intake port 3 Exhaust port 4 Case body 4a Suction port 4b Discharge port 5 Deodorizing filter 6,44 Electric blower 11 Pressure detection sensor (detection means)
DESCRIPTION OF SYMBOLS 12 Determination means 13 Timer means 14 Notification means 15, 51 Downstream space 22 Air volume detection sensor (detection means)
29 Rotational speed detection sensor (detection means)
36 Power consumption detection sensor (detection means)
60 Differential pressure detection sensor (detection means)
G exhaust flow

Claims (7)

A filter member for removing pollutants contained in the exhaust stream exhausted indoors to outdoors;
In the equipment provided with an electric blower that is arranged downstream of the filter member and generates the suction force of the exhaust flow,
A monitoring device configured to detect and notify a clogged state of the filter member of the facility,
Detecting means for detecting clogging of the filter member;
A filter clogging monitoring apparatus comprising: an informing means for informing a maintenance time of the filter member when the clogging of the filter member is detected by the detecting means.   The detection means is a pressure detection means for detecting a static pressure of the exhaust flow, and includes a determination means for comparing a detected static pressure value detected by the pressure detection means with a set static pressure value. Therefore, when it is determined that there is a change in the static pressure, the notification unit is configured to notify that the filter member is in a clogged state. Filter clogging monitoring device.   The detection means is a differential pressure detection means for detecting the static pressure of the exhaust flow on the upstream side and the downstream side of the filter member, and a detected differential pressure value detected by the differential pressure detection means and a set differential pressure A determination means for comparing the value, and when the determination means determines that there is a change in the static pressure, the notification means notifies that the filter member is clogged. The filter clogging monitoring apparatus according to claim 1, wherein the filter is clogged. A timer means for starting the operation at the time when the count signal from the determination means is input, and starting the accumulation of time;
The timer means continues to accumulate time while the count signal is output from the determination means without interruption at a predetermined time interval, and the accumulated time reaches or exceeds a set time. The filter clogging monitoring apparatus according to claim 2 or 3, wherein a notification signal is output to the notification means.   5. The deodorizing apparatus, wherein the equipment is a deodorizing device connected to the air duct that is piped from the indoor to the outdoor, and the filter member is a deodorizing filter. The filter clogging monitoring apparatus according to item 1.   5. The range hood according to claim 1, wherein the facility is a range hood that collects an exhaust flow generated during cooking and exhausts the exhaust flow to the outside through the air duct, and the filter member is a grease filter. The filter clogging monitoring apparatus according to any one of the preceding claims.   The filter clogging monitoring device according to claim 5 or 6, wherein the deodorizing device is installed in the middle of piping of the air duct that is piped from the range hood toward the outdoors.

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