JPH05154332A - Deodorizing device - Google Patents

Abstract

PURPOSE:To automatically adjust the deodorizing capacity of a deodorizing device corresponding to the concn. of the offensive smell in a room. CONSTITUTION:The concn. of an offensive smell component is measured on the basis of the detection output of an offensive smell sensor 6 and the spray amount, spray time or spray area of a liquid deodorizing agent or the number of rotations of a fan motor 21 is automatically adjusted corresponding to the measured concn. value. By this constitution, air conditioning control not troubling the hand of a user can be realized with respect to sensation large in individual difference represented by an offensive smell.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing machine, and more particularly to a deodorizing machine for removing odors in the air passing through the deodorizing filter by the deodorizing filter.

[0002]

2. Description of the Related Art Conventionally, a dry deodorizing deodorizer for adsorbing an odorous substance to a porous portion of a deodorizing filter such as an activated carbon filter has been generally provided. Further, in recent years, a wet type deodorizing method in which a deodorizing liquid agent is chemically deodorized is also provided (see, for example, Japanese Utility Model Laid-Open No. 63-77614). This wet deodorizing type deodorizer has a configuration in which the deodorizing liquid agent is repeatedly sprayed onto the deodorizing filter disposed in the air flow path to repeatedly impregnate the deodorizing liquid agent into the deodorizing filter.

[0003]

In both the dry and wet deodorizing systems, the flow rate of air passing through the filter is adjusted according to the odor concentration in the room. The regulation standard of the flow rate is human sense. For example, when many customers enter the "sports club" and "sauna" and have a strong odor,
Set the flow rate to "strong", and set it to "medium" or "weak" when there are few customers and the odor is weak. In the case of the wet deodorizing method, the liquid spray amount and the spray time interval of the deodorizing filter may be adjusted instead of adjusting the flow rate.

However, since it is desirable that the deodorizer should not notice its existence, it is desirable that the above adjustment be performed automatically. The present invention has been made in view of the above problems, and an object of the present invention is to provide a deodorizer capable of automatically adjusting the deodorizing ability of the deodorizer.

[0005]

A deodorizing machine for achieving the above object comprises a deodorizing filter arranged in an air passage, a fan for forcibly circulating the air in the air passage, and an air The odor sensor for detecting the concentration of the odor component contained therein, the comparing means for comparing the concentration of the odor component with a predetermined reference value based on the detection output of the odor sensor, and the deodorizing according to the comparison result of the comparing means. Drive control means for automatically changing the capacity.

According to the above invention, it is possible to automatically change the deodorizing ability according to the concentration of the odorous components contained in the air without the need for human hands. The drive control means, as long as it has a spraying means for spraying the deodorizing liquid agent on the deodorizing filter, may be changed deodorizing ability by adjusting the spraying amount of the deodorizing liquid agent, the spraying time or the spraying area, The deodorizing ability may be changed by adjusting the rotation speed of the fan motor.

[0007]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 2 is a perspective view showing a wall-mounted deodorizer. In the deodorizing machine, a fan 1 for air circulation, a deodorizing filter 3, and a deodorizing liquid agent are sprayed on the casing 1 having a suction port 10 formed on the lower surface and an air outlet 11 formed on the upper surface. The sprayer 4 and the control board 5 are built in.

The deodorizing filter 3 is arranged in the middle of the flow path A of the air that is moved upward by the fan 2. The deodorizing filter 3 is composed of an upper element 31 and a lower element 32, and both elements 31 and 32 are separated by a predetermined distance and arranged in upper and lower two stages. Further, the fan 2 is, for example, a multi-base type in which two sirocco-shaped fans are connected to respective rotary shafts of a biaxial fan motor 21, and the blowout portion faces the blowout port 11 of the casing 1. It is provided to do.

The elements 31 and 32 constituting the deodorizing filter 3 are obtained by alternately and repeatedly laminating flat paper and corrugated paper made of a porous water absorbing paper or the like,
A corrugated structure having parallel narrow passages in multiple rows and multiple stages is cut into a substantially rectangular parallelepiped shape, and the bottom portion of the lower element 32 has a boat bottom shape. The sprayer 4 includes a pressure container 41 filled with a deodorizing liquid agent, and the pressure container 41.
A spray nozzle 43 for spraying the deodorizing liquid agent fed from the liquid feeding pipe 42 to the deodorizing filter 3 and an opening / closing device 44 for spraying the deodorizing liquid agent and stopping the spraying are provided.

The spray nozzle 43 is for spraying the deodorizing liquid agent at an acute angle in one direction, and is located between the upper element 31 and the lower element 32, and each element 31,
It is arranged at a position corresponding to the center of the width direction 32 (the front-back direction of the casing 1) (see FIG. 3). The spray nozzle 43 can spray the deodorizing liquid agent on the entire bottom surface of the upper element 31 and the entire upper surface of the lower element 32.

The pressure container 41 is a cylindrical container generally called an aerosol, and is detached from the partition chamber 14 partitioned by the partition member 13 from the air flow path A with the injection port portion facing downward. It is fixed as possible. As shown in FIG. 1, an on-off valve 4 having a push rod elastically applied by a spring (not shown) is provided at the injection port of the pressure vessel 41.
1a is provided, and the deodorant liquid agent can be ejected from the ejection port portion by pushing the push rod against the biasing force of the spring.

The pressure vessel 41 is filled with a deodorizing liquid agent containing a flavonoid made from green tea as a component and a liquefied gas as a propellant, for example, liquefied petroleum gas (liquefied propane gas), and an on-off valve. When 41a is opened, the deodorizing liquid agent is ejected from the ejection port portion at high speed with the pressurization (3 to 4 kg / cm ² ) due to the evaporation and vaporization of the liquefied gas in the pressure vessel 41. The deodorant liquid agent ejected from the spout is
The liquid is sprayed from the spray nozzle 43 in the form of fine liquid particles through a liquid feed pipe 42 made of a resin tube having a small diameter, which connects the on-off valve 41a and the spray nozzle 43 to each other.

The opening / closing device 44 is provided adjacent to the pressure vessel 41. One end of the opening / closing device 44 is axially stopped and the middle portion of the opening / closing device 41a.
The rotary lever 44a is connected to the push rod and the solenoid 44b is connected to the other end of the rotary lever 44a via a spring. The solenoid 44b is excited to move the plunger upward. By moving the rotary lever 44a to the other end of the rotary lever 44a, the push rod of the on-off valve 41a can be pushed.

Reference numeral 16 in FIG. 2 is a remote control device for performing a driving operation at a position apart from the main body, and 45 is a micro switch for detecting that the pressure vessel 41 is set at a predetermined position. .. In the deodorizer having the above configuration, the odor sensor 6 is attached to the bottom surface of the lower element 32. As the odor sensor 6, various types such as an ammonia gas sensor, a sulfur-based gas sensor, a hydrocarbon-based gas sensor, an amine-based gas sensor, etc. can be adopted. FIG. 4 is a graph showing the correspondence between the concentration of the odor component (for example, the concentration of ammonia gas) and the output of the odor sensor 6 (which appears as a change in impedance). The darker the odor component, the lower the impedance, and as a result, the voltage across the odor sensor 6 decreases.

In the deodorizer, the output of the odor sensor 6 is used to determine whether the gas concentration is equal to or higher than a predetermined reference value. A drive controller 62 for controlling the rotation speed of the axial fan motor 21 is provided on the control board 5 (see FIG. 1). FIG. 5 illustrates specific circuits of the comparison unit 61 and the drive control unit 62. The output of the odor sensor 6 is the comparator 6
1a, 61b, 61c, and the reference voltage E respectively
a, Eb, Ec. The reference voltage Ea is
It is the concentration of the odorous component which can be perceived as having an odor although it is unknown what the odor is. Normally, this concentration is set to a voltage corresponding to the concentration Na at which the deodorizer is operated "weakly". The reference voltage Eb is the concentration of the odorous component that can be easily sensed, and normally this concentration is set to a voltage corresponding to the concentration Nb at which the deodorizer is operated "medium". The reference voltage Ec is the concentration of the odorous component that is strongly felt, and normally, this concentration is set to a voltage corresponding to the concentration Nc at which the deodorizer is operated "strongly".

The output of the comparator 61c is taken out from the comparator 61 alone. The output of the comparator 61b and the negation of the output of the comparator 61c enter the logic circuit 61e, from which a signal corresponding to the logical product is output. The output of the comparator 61a and the negation of the output of the comparator 61b enter the logic circuit 61d, and a signal corresponding to the logical product is output from here. Comparator 61
The output of c, the output of the logic circuit 61e, and the output of the logic circuit 61d drive the relays MR1, MR2, and MR3, respectively.

The operations of the comparison section 61 and the drive control section 62 are shown in FIG. When the odor concentration N is N <Na, the relays MR1, MR2 and MR3 are all off, but when Na <N <Nb, only the relay MR3 is on, and when Nb <N <Nc, only the relay MR2 is on. .. When Nb <N <Nc, only the relay MR2 is turned on.

FIG. 7 is a connection diagram of the fan motor 21. The fan motor 21 includes relay switches MR1 and MR.
Power is supplied from the power source Eg via the MR element 2 or MR3. When the relay switch MR1 is turned on, the fan motor 21 rotates at a rotation speed corresponding to “weak” operation,
When the relay switch MR2 is turned on, it rotates at a rotation speed corresponding to "medium" operation, and when the relay switch MR3 is turned on, it rotates at a rotation speed corresponding to "weak" operation.

The operation of the deodorizer having the above structure is as follows. When an operation command is transmitted by the remote control device 16, a command from a control unit (not shown) of the control board 5 causes
The fan motor 21 is driven and the solenoid 4
The pulse output is periodically sent to 4b. As a result, the solenoid 44b is excited, the rotary lever 44a is pulled up, the on-off valve 41a is opened, and the deodorizing liquid agent in the pressure vessel 41 is delivered and sprayed from the spray nozzle 43 onto the deodorizing filter 3.

On the other hand, the air that is moved upward by the rotation of the fan 2 passes through the deodorizing filter 3 impregnated with the deodorizing liquid agent, and its odorous components are removed by the reaction with the deodorizing liquid agent. The odor sensor 6 constantly detects an odor component in the air, and the comparison unit 61 supplies an output signal according to the detected concentration to the drive control unit 62. Then, one of the relays MR1, MR2, MR3 of the drive control unit 62 is turned on, and the fan motor 21 is “strong” according to the concentration of the odorous component.
Driven "medium" or "weak". Since the air flow rate can be adjusted according to the rotation speed of the fan motor 21,
Finally, the deodorizing ability of the deodorizing machine can be adjusted.

Since the automatic adjustment is performed as described above, for example, the "strong" operating state may continue for a long time. in this case,
Since it is desirable to constantly replenish the deodorizing filter 3 with the deodorizing liquid agent, it is desirable to adjust the spray amount and spray interval of the spray nozzle 43. FIG. 8 is a structural view of the essential parts showing another embodiment. In this embodiment, a drive control unit 63 that adjusts the excitation time of the solenoid 44b according to the comparison result of the comparison unit 61 is provided. The drive control unit 63
According to the odor component concentration detection result of the comparison unit 61, when the concentration is high, the one-time excitation time of the solenoid 44b is lengthened, and when the concentration is small, the one-time excitation time of the solenoid 44b is shortened. The deodorizing ability of the deodorizer can be adjusted according to the concentration of odorous components in the air.

In addition to the embodiment shown in FIG. 8, the time interval for spraying the deodorant liquid agent may be adjusted according to the result of the concentration detection of the odorous component of the comparison section 61. Furthermore, as shown in FIG. 9, the output of the odor sensor 6 is compared with the output of the comparators 61a and 61a.
b and 61c are compared with reference voltages Ea, Eb, and Ec, respectively, and three solenoid valves 64a, 64b, and 64c are output by the output of the comparator 61a, the output of the comparator 61b, and the output of the comparator 61c.
It is also conceivable to carry out driving. Solenoid valve 64
As shown in FIG. 10, a, 64b and 64c are connected in parallel to the pressure vessel 41, and the deodorizing liquid agent can be sprayed from the spray nozzle to the deodorizing filter 3 respectively. In this embodiment, the spray area of the deodorant liquid agent can be adjusted according to the concentration of the odorous component detected by the comparison unit 61.

The deodorizer of the present invention is not limited to the above embodiment. In the above embodiment, the comparison unit 61 is
Although the odor sensor 6 compares the concentrations of odor components based on three types of reference levels Ea, Eb, and Ec, the present invention is not limited to this, and even if the number of reference levels is increased and finely detected. Good. In this case, it is preferable that the fan motor 21 also be of an inverter type so that the rotation speed can be finely adjusted. Further, it goes without saying that it can be applied to a dry deodorizing deodorizer using activated carbon or the like.

Besides, various design changes can be made within the scope of the invention.

[0025]

As described above, according to the deodorizer of the present invention, the concentration of the odorous component is measured based on the detection output of the odor sensor, and the deodorizing ability is automatically changed according to the concentration. Therefore, it is possible to realize excellent air-conditioning control that does not bother the user, particularly regarding a sense of odor that causes a large individual difference.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts showing a deodorizer of the present invention.

FIG. 2 is a perspective view showing an internal configuration of a deodorizer.

FIG. 3 is a side view of a main part of a deodorizer.

FIG. 4 is a graph showing output characteristics of an odor sensor.

FIG. 5 is a main part electric circuit diagram of the deodorizer.

FIG. 6 is a graph showing the relationship between the detected concentration of odorous components and the operating state of a relay.

FIG. 7 is a connection diagram for a fan motor.

FIG. 8 is a block diagram of a main part showing another embodiment of the deodorizer.

FIG. 9 is a block diagram of a main part showing another embodiment of a deodorizer having a plurality of solenoid valves.

10 is a conceptual diagram showing a spraying state in the embodiment of FIG.

[Explanation of symbols]

 A air flow path, Ea, Eb, Ec reference voltage, 2 fan, 3 deodorizing filter, 4 sprayer, 6 odor sensor, 21 fan motor, 61 comparison means, 62, 63 drive control means

Claims (1)

[Claims] 1. A deodorizing filter arranged in an air flow path (A), a fan (2) forcibly circulating the air in the air flow path (A), and a concentration of odorous components contained in the air. An odor sensor (6) for detecting odor, a comparison means (61) for comparing the concentration of the odor component with one or more reference values (Ea, Eb, Ec) based on the detection output of the odor sensor (6), and a comparison means Drive control means (62, 6) that automatically changes the deodorizing ability according to the comparison result of (61).
3, 64) and a deodorizer.