JPH0692839B2 - Air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention provides an air conditioner in which a heat source for changing the temperature of air and a blower are provided in a casing, and the air sucked into the casing by the operation of the blower is blown out. Regarding the machine,
In particular, the present invention relates to a casing having a suction port provided with a filter for purifying air.

[Prior Art] As an air conditioner, for example, in a hot air heater that blows heated air into a room, if dust in the room passes through the equipment and is blown out, it feels uncomfortable. A filter is provided in the equipment casing to prevent passage.

In addition, recently, when operating the air conditioner, there are some that have an air purifying function that simultaneously collects not only dust but also dust, cigarette smoke, and fine particles such as pollen. Is equipped with an activated carbon filter.

In this case, since it is generally necessary to blow out a large amount of heated or cooled air in the air conditioner, an activated carbon filter is used that has an air passage such as a honeycomb shape so that the air can easily pass through. .

[Problems to be Solved by the Invention] As described above, in the air conditioner provided with the activated carbon filter, when the air passes through the air passage of the activated carbon filter, it is adsorbed on the fine particles by the adsorption force of the activated carbon filter. Since it is removed, there is a limit to the effect as a filter, and there is a problem that a sufficient purifying action is not always obtained as compared with, for example, a dedicated air cleaner.

The present invention, in an air conditioner that heats or cools passing air, improves the air purifying action of removing fine particles in passing air while securing a sufficient amount of air passing through the device without impairing the cooling and heating effect. The purpose is to

[Means for Solving the Problem] The present invention provides a heat source and a blower in a casing having an inlet and an outlet, and sucks air into the casing from the inlet by the operation of the blower, and the heat source In the air conditioner that changes the temperature by the above and blows out from the blowout port, the suction port is provided with a plurality of filter members for purifying the air sucked into the casing, and the plurality of filter members are It consists of a wire net for removing dust of air sucked into the casing, an insulating resin net, an electromagnetic pair consisting of a positive electrode and a negative electrode for charging particles in the air, and an activated carbon filter, which are outside the casing. The technical means is that they are arranged in order from the inside to the inside.

[Operation] In the present invention, when the air conditioner operates, air is sucked into the casing from the suction port, heated or cooled, and blown out from the blowout port.

When the air passes through the suction port, dust in the air is removed by the wire mesh, and fine particles in the air are charged by the positive electrode and the negative electrode.

The charged fine particles are easily adsorbed on the electrode or the activated carbon filter having a polarity opposite to that of the fine particles, and are adsorbed when passing through the activated carbon filter.

[Advantages of the Invention] In the present invention, since the activated carbon filter is provided with the communication hole, a sufficient amount of air is sucked into the casing from the suction port and blown out from the air outlet.

Also, since the fine particles in the air that are sucked in are charged,
As it is easily adsorbed when passing through an activated carbon filter, it is also possible to adsorb O ₃ generated by high voltage,
Purification effect is improved.

Further, since the dust and the like are removed by the wire mesh in advance, the ventilation holes of the activated carbon filter are unlikely to be clogged.

Further, even if the wire net is removed to clean the wire net for removing dust and the like, since the resin net is provided inside the wire net, it is safe because a person does not come into contact with the positive electrode or the negative electrode. .

EXAMPLES Next, the present invention will be described based on examples.

The gas warm air heater 1 shown in FIG. 1 is improved so that it can be used as a heating device during cold weather such as in winter, and as an air purifier when heating is not required. A burner 20 as a heating means is arranged in the lower portion of the floor-standing main body case 10 sheet-metal processed by the metal member, and a suction port 11 and a burner 20 for sucking indoor air are provided on the surface of the main body case 10. Warm air outlets 12 for blowing heated air are provided on the rear surface and the front surface of the main body case 10, respectively, and further, on the upper part of the main body case 10, formed by resin to cover the upper surface of the main body case 10. Upper outlet from which air is blown when used as
A cover member 14 with 13 is provided.

In the main body case 10, a convection duct that connects the suction port 11 and the hot air outlet 12 and forms a fan casing of a cross-flow type convection fan 15 for circulating indoor air.
16 is provided, and the suction port 11 is operated by the operation of the convection fan 15.
Air is sucked in from and is blown out from the warm air outlet 12.

The convection duct 16 communicates with the upper outlet 13 so that the upper duct 16a is branched downstream of the impeller 15a of the convection fan 15.
The convection duct 16 is provided with a switching damper 17 for changing the direction of the air flow by the convection fan 15 to select between the warm air outlet 12 and the upper outlet 13 at the branch portion of the convection duct 16. .

The switching damper 17 includes a drive motor 17a having a reduction mechanism.
Is equipped with a
When the upper duct 16a on the 13 side is closed and used as an air cleaner, the convection duct 16 on the warm air outlet 12 side is closed.

The burner 20 is a mixing box having a ceramic burner plate 23 at the lower end of a combustion duct 22 that forms a combustion chamber 21.
24 is provided, and around the burner plate 23 in the combustion duct 22, a flame holding wall 22a is provided so as to surround the burner plate 23. The burner 20 has combustion air as shown in FIG. A combustion fan 25 for supplying the

The mixing box 24 is provided with a substantially conical air supply pipe 26 for controlling the air supplied into the mixing box 24 at the supply port 24a to which the fuel gas and the combustion air are supplied. A nozzle 30 for injecting fuel gas is arranged in the central portion at a distance from the air supply pipe 26.

The air supply pipe 26 is adapted to automatically change the combustion state of the burner 20 to all primary air combustion and Bunsen combustion according to the operating state of the combustion fan 25, and in response to this,
A blower duct for directly supplying the combustion air supplied by the combustion fan 25 into the combustion chamber 21 is provided outside the combustion duct 22, and the combustion duct 22 has an outer portion corresponding to the flame retaining wall 22a. A plurality of air supply holes 22b are formed to connect the combustion chamber 21 and the air duct 27 to each other.

The combustion fan 25 uses a centrifugal blower, and below the suction port 11 on the rear surface of the body case 10, an air supply port 28a communicated with an air supply duct 28 is provided. The air supply duct 28 is provided with a resin filter 29 and a resin cotton 29a to pass the air supplied to the mixing box 24.

The combustion duct 22 extends upward from the burner 20, and the upper end thereof is a convection duct 16 in the upstream portion of the convection fan 15.
And the combustion chamber 21 communicates with the suction port 11.

Upstream of the nozzle 30, there is provided a valve mechanism 31 in which a double solenoid valve and a proportional valve for adjusting the fuel supply amount are integrally configured, and a fuel corresponding to the control state of the valve mechanism 31 is provided. Gas is supplied.

In the gas warm air heater 1 having the above configuration, the suction port 11 is provided with a filter unit 40 for removing dust in the passing air, cigarette smoke, dust such as pollen.

The filter unit 40 has a suction port as shown in FIG.
It is made slightly smaller than the suction port 11 so that it can be fitted inside 11, and its lower end is rotatably supported by the main body case 10 so that it can swing toward the outside of the main body case 10. .

As shown in FIG. 4, the filter unit 40 has a plurality of filter constituent members arranged in a unit case 41 whose upper side is opened. The filter constituent members are a wire mesh 42, a resin net 43, and a regular mesh in order from the outside. Electrode 44, resin frame 45, negative electrode 4
6. There is an activated carbon filter 47, and these filter constituent members are fitted in the fitting grooves 41a, 41b inside the unit case 41, and a holding lid 48 is fitted on the upper end of the unit case 41.

The wire net 42 is provided with a relatively fine net in a metal frame and collects relatively large dust such as cotton dust in the room.For easy cleaning and maintenance in normal use, the wire net 42 has
A take-out portion 42a for pulling up the wire net 42 from inside the unit case 41 is formed so as to be bent outward.

Corresponding to the take-out portion 42a, the holding lid 48 is formed with a cutout portion 48a for not covering the wire net 42.

The resin net 43 is a protective net for preventing the user or the like from directly touching the positive electrode 44 described later when the wire net 42 is taken out from the unit case 41, and prevents the fingers of young children from passing through. It has a degree of eyes.

The positive electrode 44 is a discharge electrode for charging dust passing through the filter unit 40 and facilitating adsorption to the negative electrode 46 and the activated carbon filter 47 described later.

The positive electrode 44 has a plurality of substantially rectangular openings formed on a metal plate such as a plate-shaped metal plate whose periphery is bent outwardly of the main body case 10.
As shown in FIG. 5, a protrusion 44b having a point is formed in each opening 44a toward the inside of the opening 44a.

On the other hand, the negative electrode 46 is provided as a part of the dust collecting electrode corresponding to the positive electrode 44, is made of a metal plate such as aluminum, and the main body case 10 is bent outward in the upper part. The upper bent part 46a has side bent parts 46b, 46c bent in the left-right direction inward of the body case,
Further, corresponding to each opening 44a of the positive electrode 44, there is provided a louver portion 46b that is bent toward the outside of the main body case 10 so as to penetrate through the opening 44a.

The positive electrode 44 is arranged inside the resin frame 45, and the above-mentioned protective wire net 42 is fitted into the resin frame 45, whereby the positive electrode 44 is fixed in the resin frame 45.

On the other hand, the negative electrode 46 is a fitting groove into which the resin frame 45 is fitted.
The unit case 41 is fitted into a fitting groove 41b larger than 41a and is provided in the unit case 41, and is insulated from the positive electrode 44 by a resin frame 45.

As a result, as shown in FIG. 5, the positive electrode 44 and the negative electrode 46 are arranged such that the opening 44a of the positive electrode 44 is located around the louver portion 46d of the negative electrode 46 arranged in parallel to the louver portion 46d. Positive electrode 44 is arranged in a right angle direction, and further, protrusions 44b having sharp points are arranged on both sides of the louver portion 46d at a predetermined distance from the louver portion 46d, so that between each of these electrodes 44, 46. When a DC high voltage (about 4.0 k to 6.0 kV) is applied, particles such as dust and dust passing through are easily charged.

At this time, the negative electrode 46 is provided with a not-shown claw portion in the resin frame 45.
Positioning is carried out by mounting it in a fitting hole (not shown), and an appropriate space is secured between the positive electrode 44 and the projection 44b.

The activated carbon filter 47 is formed by adhering a large number of activated carbon particles to the surface of a filter member 47b having a honeycomb structure having a large number of through holes 47a with an adhesive, and the filter member 47b itself has conductivity.

In the activated carbon filter 47, a filter member 47b is fixed by a metal filter frame 47c, and a take-out portion 47b is formed at an upper end of the filter frame 47c so that the activated carbon filter 47 can be taken out easily.

The activated carbon 47 is fitted between the side bent portions 46b and 46c of the negative electrode 46 in the unit case 41 to which the negative electrode 46 is fitted.

As a result, the activated carbon filter 47 is connected to the negative electrode of the high voltage circuit (not shown) via the negative electrode 46,
Since the positively charged particles are attracted to the activated carbon filter 47, these particles can be easily collected.

The main body case 10 is provided with a unit detection switch 49 inside the upper portion of the suction port 11 in order to detect that the unit case 41 is attached, and the activated carbon filter is also provided.
In order to detect whether or not 47 is accommodated in the unit case 41, an opening 41c for filter detection is provided at the center of the lower end of the unit case 41, and the filter detection opening 41c is provided in the opening 41c. A switch 49a is provided.

In the gas warm air heater 1 having the above configuration, the convection fan 15 circulates the indoor air to generate the convection duct 16
There are a heating operation in which the air circulating inside is heated by the burner 20 and a cleaning operation in which only the convection fan 15 is operated without heating by the burner 20 and used as an air cleaner. Each operation is controlled according to the operation state of 51 or the purification switch 52.

The control device 50 includes a drive circuit that drives the fans 15 and 25, the drive motor 17a of the switching damper 17 or the valves of the valve mechanism 31, respectively, centering on the microcomputer, dust by the activated carbon filter 47, cigarette smoke, and pollen. Consists of a high-voltage generating circuit that generates a high voltage to improve the adsorption of particles such as a temperature setter 51a for setting a desired indoor temperature in heating operation, for detecting the indoor temperature. A temperature sensor 53 is provided, and in addition, an ignition electrode 54 for igniting the burner 20, a thermocouple 55 for detecting ignition of the burner 20, and the like are provided.

Further, in the cleaning operation, an air volume setting device 52a for setting the rotation speed of the convection fan 15 is provided in order to change the air volume by the convection fan 15.

In the controller 50, the sequence controller 57, the combustion controller 58, the convection controller 59, and the charger are provided in order to control the heating switch 51 or the purification switch 52 according to the operation.
60 functional units are provided.

The sequence control unit 57 controls each unit in a predetermined order according to the condition when the operation signal is given from the purification switch 52 or the heating switch 51.

Particularly here, the discrimination control for the mounting confirmation regarding the activated carbon filter 47 is performed, and the purification switch 52 or the heating switch 51 is performed.
If the unit detection switch 49 and the filter detection switch 49a do not close the contacts when is operated, no operation is started and the above-mentioned detection switches 49, 49a are contacted during the operation. If is opened, stop the operation.

In the convection duct 16 and the combustion duct 22, a temperature switch that operates at a predetermined temperature is provided, and a temperature fuse that blows when the temperature becomes high is provided in the convection duct 16 to prevent clogging of the filter unit 40. When it is detected that the hot air outlet 12 is blocked and the temperature inside each duct rises, the heating operation is stopped.

Also, a fall switch is provided in the main body case 10,
If the body case 10 is not installed properly and is tilted, all operations are stopped.

Hereinafter, the control operation in each operating state will be described.

(1) Single heating operation When the heating switch 51 is operated and the heating operation is instructed,
After performing the above-described attachment confirmation determination control, if properly attached, the combustion control unit 58 is controlled to perform the ignition control of the burner 20 in a predetermined sequence to operate the ignition electrode 54 and the combustion fan 25. At the same time as starting, each solenoid valve and the proportional valve in the valve mechanism 31 are opened to perform the ignition operation of the burner 20 to burn the burner 20.

Further, the convection control unit 59 drives the convection fan 15 in response to the ignition control of the burner 20 to circulate the indoor air.

At this time, the switching damper 17 closes the upper duct 16a on the side of the upper outlet 13 so that the suction port 11 and the warm air outlet 12 communicate with each other.

As a result, the combustion gas of the burner 20 is mixed with the indoor air sucked by the convection fan 15 and blown out from the warm air outlet 12.

When the stop of the heating operation is instructed, the combustion of the burner 20 is stopped by a predetermined fire extinguishing control, and then, when the temperature in the convection duct 16 decreases, the convection fan 15 stops.

In the heating operation, the convection fan 15 is controlled according to the combustion control state in the combustion control unit 58 and does not accept the setting by the air flow rate setting device 25a.

(2) Single purification operation When the purification switch 52 is operated and the purification operation is instructed,
When the above-mentioned mounting confirmation determination control is performed and if there is no abnormality, the convection control unit 59 is controlled to drive the convection fan 15, and at this time, the switching damper 17 causes the convection duct 16 on the warm air outlet 12 side.
Is closed, and the suction port 11 and the upper air outlet 13 are made to communicate with each other.

Further, the rotation speed of the convection fan 15 is set by the air volume setting device 52a, and the air is blown from the upper air outlet 13 at an air volume corresponding to the rotation speed.

(3) Purification / Heating Operation When the heating switch 51 and the purification switch 52 are operated and the heating operation and the purification operation are instructed, the purification / heating operation is performed.

At this time, the switching damper 17 closes the upper duct 16a on the upper outlet 13 side to connect the suction port 11 and the warm air outlet 12 to each other. Further, in this case, the setting by the air volume setting device 52a is not accepted.

(4) Change from heating operation to purification single operation When heating operation is performed and the mode is changed to purification operation, combustion of the burner 20 is stopped while only the convection fan 15 is driven, and the switching damper is used. 17 is driven to close the convection duct 16 on the warm air outlet 12 side, and air is blown into the room from the upper outlet 13.

At this time, even if the combustion of the burner 20 is stopped, the temperature of the burner 20 does not immediately drop. Therefore, if the air is blown out from the upper outlet 13 as it is, the cover member that forms the upper outlet 13
Since there is a risk that the 14 will be deformed or damaged by heat, the temperature of the air blown out here is the resin cover member 14
Delay the switching of the duct by the switching damper 17 until the time required to lower it so that it does not affect the
The covering member 14 is protected.

(4) Change from purification operation to heating operation In this case, the purification operation is temporarily stopped and the heating operation is started as described above.

In each of the above operations, when the indoor air passes through the suction port 11 due to the operation of the convection fan 15, the filter unit
Due to the high voltage applied between the electrodes 44 and 46 of the 40, particles such as cigarette smoke and pollen and dust are charged to be positively charged,
The activated carbon filter 47 connected to the negative electrode 46 adsorbs and removes dust and the like.

As described above, in the present embodiment, the suction port 11 is provided with the wire net 42, the resin net 43, the electrode pair composed of the positive electrode 44 and the negative electrode 46, and the activated carbon filter 47 in order, so that the filter effect is good and the wire net 42 When cleaning the
It is safe because it is covered by.

Further, in the case of the purifying operation in which the heating by the burner is not performed, the air is blown out from the upper outlet, so that the air is less likely to directly hit the person, and the feeling of cold air is not felt. Therefore, it is possible to spend comfortably without feeling the cleaning operation.

In the above embodiment, the electrode pair is arranged so that the positive electrode is on the outer side in the main body case, but the negative electrode may be on the outer side.

In the above example, the gas burner is shown as the heat source,
The fuel of the burner may be petroleum, may be electric heat other than the burner, and may be a heat source for cooling.

The present invention can also be applied to an FF type heater equipped with a heat exchanger.

[Brief description of drawings]

FIG. 1 is a side sectional view of a gas warm air heater showing an embodiment of the present invention, FIG. 2 is a cutaway front view of the gas warm air heater, and FIG. 3 is a cross section showing the structure of a filter unit of this embodiment. Figure, 4th
FIG. 5 is a diffusion exploded view of the filter unit, FIG. 5 is a front sectional view of the filter unit showing the relationship between the positive electrode and the negative electrode,
FIG. 6 is a functional block diagram for explaining the control device of this embodiment. In the figure, 1 ... Gas warm air heater (air conditioner), 10 ... Main body case (casing), 11 ... Suction port, 12 ... Warm air outlet (outlet), 15 ... Convection fan ( Blower), 20 ...
... Burner (heat source), 40 ... Filter unit (plural filter members), 42 ... Wire mesh, 43 ... Resin mesh, 44 ... Positive electrode, 46 ... Negative electrode, 47 ... Activated carbon filter, 47a ... Through hole (ventilation hole).

Claims (1)

[Claims] 1. A heat source and a blower are provided in a casing having an inlet and an outlet, air is sucked into the casing from the inlet by the operation of the blower, and the temperature is changed by the heat source to blow the air. In the air conditioner blown out from the outlet, the suction port is provided with a plurality of filter members for purifying air sucked into the casing, and the plurality of filter members are dust of air sucked into the casing. A metal mesh for removing particles, an insulating resin mesh, an electromagnetic pair consisting of a positive electrode and a negative electrode for charging particles in the air, and an activated carbon filter, which are sequentially arranged from the outside to the inside of the casing. An air conditioner characterized by that.