JPH03204564A - Air conditioner - Google Patents

Abstract

PURPOSE:To sufficiently obtain an air amount and to improve air purifying action for removing fine particles in the air by providing an electric duct collector in which an actived charcoal filter is arranged in a suction port, and used as a duct collecting electrode. CONSTITUTION:A filter unit 40 is provided in a suction port 11. In the unit 40, as a plurality of filter composing members are arranged in a unit case 41, sequentially from the outside a wire netting 42, a resin gauze 43, a positive electrode 44, a resin frame 45, a negative electrode 46 and an actived charcoal filter 47, the members are engaged with engaging grooves 41a, 41b inside the case 41, and a retaining cover 48 is engaged with the upper end of the case 41. The filter 47 is engaged between the side bent parts 46b, 46c of the electrode 46 in the case 41 engaged with the electrode 46. Thus, the filter 47 is connected to the negative electrode of a high voltage circuit through the electrode 46. Since the particles charged to positive charge are attracted to the filter 47, the particles can be easily collected.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides an air conditioner in which a heat source and a blower for changing the temperature of air are provided in a casing, and air sucked into a gauging is blown out by the operation of the blower. Regarding the machine,
In particular, the air inlet of the casing is equipped with a filter for purifying the air.

[Prior Art] As an air conditioner, for example, in a warm air heater that blows heated air into a room, if dust inside the room is blown out through the device, people feel uncomfortable. A filter is provided within the casing of the device to prevent its passage.

In addition, recently, some air conditioners have an air purification function that collects not only dust but also fine particles such as cigarette smoke and pollen, and gas when operating. Equipped with activated carbon filter.

In this case, since air conditioners generally need to blow out a large amount of heated or cooled air, activated carbon filters are used that have honeycomb-shaped air passages to allow the air to pass through easily. .

[Problems to be Solved by the Invention] As described above, in an air conditioner equipped with an activated carbon filter, when air passes through the activated carbon filter, gases, etc. are adsorbed and removed by the adsorption power of the activated carbon filter. Therefore, there is a limit to its effectiveness as a filter, and when compared with, for example, a dedicated air cleaner, there is a problem in that a sufficient purifying action is not necessarily obtained.

In an air conditioner that heats or cools passing air, the present invention improves the air purification effect by removing particulates from the passing air while ensuring a sufficient amount of air passing through the device without impairing the cooling/heating effect. The purpose is to

[Means for Solving the Problems] The present invention provides a heat source and a blower in a casing having an inlet and an outlet, and operates the blower to draw air into the casing from the inlet, and the heat source In an air conditioner that changes the temperature and blows air from the outlet, the inlet is provided with an activated carbon filter and an electrostatic precipitator using the activated carbon filter as a dust collection electrode. Use as a means.

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

When air passes through the suction port, dust and the like in the air is charged by the electrostatic precipitator and adsorbed when it passes through the air passage of the activated carbon filter.

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

In addition, since fine particles such as dust in the air that are inhaled are charged, they are more likely to be adsorbed when passing through an activated carbon filter, and they can also adsorb 03 generated by high voltage, so it is not necessary to simply incorporate an electrostatic precipitator. The purification effect is improved compared to the case where

[Example] Next, the present invention will be explained based on examples.

The gas hot air heater 1 shown in Fig. 1 has been improved so that it can be used as a heating device during cold and cold times such as winter, and as an air purifier when heating is not required. A burner 20 as a heating means is installed in the lower part of the floor-standing main body case 10 made of sheet-metal-processed metal members.
are arranged on the surface of the main body case 10, and a suction port 11 through which indoor air is sucked and a hot air outlet 12 through which air heated by the burner 20 is blown out are provided on the surface of the main case 10, respectively.
0 is provided on the rear and front surfaces of the main body case 10, and is further provided with an upper air outlet 13 formed of resin to cover the upper surface of the main body case 10, through which air is blown out when used as an air cleaner. A covering member 14 is provided.

Inside the main body case 10, there is a suction port 11 and a hot air outlet I'12.
d for communicating with the room and circulating indoor air.
The convection tact 16 forming the fan casing of the flow-type convection fan 15 is turned off 3Q, and air is sucked in through the suction port 11 by the operation of the 2-i diversion fan 15 and blown out from the hot air outlet 12.

The convection duct 16 is provided with an upper duct 16a that branches downstream of the impeller 15a of the convection fan 15 in order to communicate with the upper outlet 13. A switching damper 17 is provided for changing the traveling direction and selecting between the hot air outlet 12 and the upper outlet 13.

The switching damper 17 includes a drive motor 1 equipped with a speed reduction mechanism.
7a is provided, and when used as a heating device, the upper duct 16a on the upper outlet 13 side is closed, and when used as an air cleaner, the convection duct 16 with 12 hot air outlets is closed.
Close.

The burner 20 includes a combustion tough l-22 forming a combustion chamber 21.
A mixing box 24 equipped with a ceramic burner plate 23 is provided at the lower end of the combustion duct 22, and a flame stabilizing wall 22a is provided around the burner plate I 23 in the combustion duct 22 so as to surround the burner plate 23. As shown in FIG. 2, the burner 20 is equipped with a combustion fan 25 for supplying combustion air.

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 a supply port 24a through which fuel gas and combustion air are supplied. In the center part, there is a nozzle 30 that spouts fuel gas.
is arranged at a distance from the air supply pipe 26.

The air supply pipe 26 operates according to the operating state of the combustion fan 25.
The combustion state of the burner 20 can be automatically changed between full-air combustion and Bunsen combustion. A ventilation duct 27 for directly supplying air into the combustion chamber 21 is provided, and the combustion duct 22
A plurality of air supply holes 22b are formed in the outer portion corresponding to the flame-holding wall 22a to communicate the combustion chamber 21 and the air duct 27.

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

The combustion duct 22 extends upward from the burner 20, and its upper end is connected to the convection duct 16 upstream of the convection fan 15, and the combustion chamber 21 communicates with the suction port 11.

Upstream of the nozzle 30 , an organic PR 31 is provided which integrally includes a dual electromagnetic valve and a proportional valve for adjusting the amount of fuel supplied. is supplied.

In the gas hot air heater 1 having the above configuration, the suction port 11 is equipped with a filter unit 40 for removing dust, cigarette smoke, pollen, and other dust from the passing air.

As shown in FIG. 3, the filter unit 40 is made slightly smaller than the suction port 11 so that it can be fitted into the suction port 11, and its lower end is rotatably supported by the main body case 10. It is provided so that it can swing toward the outside of 10.

As shown in FIG. 4, the filter unit 40 has a plurality of filter components disposed inside a unit case 41 that is open at the top.The filter components include, in order from the outside, a wire mesh 42, a resin mesh 43, and a main filter. Electrode 44, resin frame 4
5. There are a negative electrode 46 and an activated carbon filter 47, and these filter components are fitted into respective fitting grooves 41a and 41b inside the unit case 41, and the unit case 4
A presser foot M2S is fitted to the upper end of 1.

The wire mesh 42 is a relatively fine mesh placed inside a metal frame, and is used to collect relatively large dust such as wire rings in the room.The wire mesh 42 has a wire mesh at the upper end for easy cleaning and maintenance during normal use. A take-out portion 42a for pulling up the wire mesh 42 from inside the unit case 41 is formed so as to be bent outward.

In addition, a notch 48a is formed in the presser foot i48 so as not to cover the wire mesh 42, corresponding to the take-out portion 42a.

The resin net 43 is a protective net to prevent the user from directly touching the positive electrode 44, which will be described later, when the wire net 42 is taken out from the unit case 41, and is designed to prevent the fingers of young people from passing through. It has a certain degree of appearance.

The positive electrode 44 is a discharge electrode that charges dust and dust passing through the filter unit 40 to facilitate adsorption to a negative electrode 46 and an activated carbon filter 47, which will be described later.

The positive electrode 44 is formed by providing a plurality of approximately rectangular openings 44a in a metal plate made of iron or the like whose periphery is bent toward the outside of the main body case 10 into a dish shape. As shown in FIG. 2, a protrusion 44b with a pointed end is formed toward the inside of the opening 44a.

On the other hand, the negative electrode 46 is provided as a part of the dust collection electrode corresponding to the above-mentioned positive electrode 44, and is made of a metal plate made of aluminum or the like. In the left and right direction, the upper bent portion 46a is bent toward the inside of the main body case l\side bent portion 46
b, 46c are further inserted into the main body case 10 so as to correspond to each opening 44a of the positive electrode 44 and penetrate through the inside of the opening 44a.
A portion of the louver 46d that is bent toward the outside of the
is provided.

The positive electrode 44 is arranged inside the resin frame 45, and the above-mentioned protective wire mesh 42 is fitted to the resin frame 45, so that the positive electrode 44 is fixed within the resin frame 45.

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

As a result, as shown in FIG.
The opening 4.1a of the positive electrode 44 is located around d, the positive electrode 44 is arranged perpendicularly to the louver part 46d, and a protrusion 44 with a pointed end is located on both sides of the louver part 46d.
b is disposed at a predetermined distance from the louver portion 46d, a high DC voltage (approximately 4.4 mm) is applied between each of these electrodes 44 and 46.
When a voltage of 0 to 6.0 kV is applied, passing particles such as dirt and dust are easily charged.

At this time, the negative electrode 46 is connected to the resin frame 4 by a claw (not shown).
Positioning is performed by attaching it to the not-illustrated fitting hole 5, and an appropriate distance is secured between it and the protrusion 44b of the positive electrode 44.

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

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

The activated carbon filter 47 is fitted between the side bent portions 46b and 46c of the negative electrode 46 within the unit case 41 into which the stationary mold 46 is fitted.

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

In addition, in order to detect that the unit case 41 is attached to the main body case 10, there is a
, unit 1 to four detection switches are provided, and in order to detect whether or not the activated carbon filter 47 is housed in the unit case 41, a filter detection switch is provided at the center of the lower end of the unit case 41. There is an opening 41C, and a filter detection switch 49a is mounted within this opening 11c.

This gas hot air heating 1i consists of the above configuration! In II,
A heating operation in which the indoor air is circulated by the convection fan 15 and the air circulating in the convection duct 16 is heated by the burner 20, and a heating operation is not performed by the burner 20.
There is a purification operation in which only the convection fan 15 is operated and used as an air cleaner, and each operation is controlled by the control device M50 according to the operating state of the heating switch 51 or the purification switch 52.

The control device 50 mainly includes a microcomputer,
Drive motor 1 for each fan 15.25 and switching damper 17
7a or the response of the valve mechanism 31, a high voltage generation circuit that generates a high voltage to improve the adsorption of particles such as dust, cigarette smoke, pollen, etc. by the activated carbon filter 47, and the like. , a temperature setting device 51a for setting a desired indoor temperature during heating operation, a temperature sensor 53 for detecting the indoor temperature, and an ignition electrode 54 for igniting the burner 20,
A thermocouple 55 and the like for detecting ignition of zero is provided.

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

In the control device 50, each functional section of a sequence control section 57, a combustion control section 58, a convection control section 59, and a charging section 60 is configured to perform control according to the operation of the heating switch 51 or the purification switch 52. It is provided.

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

Particularly here, determination control is performed to check the installation of the activated carbon filter 47, and when the purification switch 52 or the heating switch 51 is operated, the unit detection switch 4
9 and the filter detection switch 49a do not close their contacts, the -off operation is not started, and if each of the detection switches 49 and 49a open their contacts during operation, the operation is stopped. Stop.

Note that inside the convection duct 16 and inside the combustion duct 22,
Temperature switches that operate when each temperature reaches a predetermined temperature are provided, and a temperature fuse that melts when the temperature reaches a high temperature is provided in the convection duct 16 to prevent clogging of the filter unit 40,
When it is detected that the temperature inside each duct has increased due to the hot air outlet 12 being blocked, the heating operation is stopped.

Further, a fall switch is provided inside the main body case 10, and if the main body case 10 is not properly installed and is tilted, all operations are stopped.

Control operations in each operating state will be explained below.

(1) Heating only operation When the heating switch 51 is operated and heating operation is instructed, the above-mentioned determination control is performed to confirm that the unit is installed, and if the unit is installed correctly, the combustion control unit 58 is controlled to perform a predetermined operation. The ignition of the burner 20 is controlled in sequence, the ignition electrode 54 and the combustion fan 25 are started, and the valve mechanism 3 is activated.
The burner 20 is ignited by opening each of the solenoid valves and proportional valves 1 and igniting the burner 20, causing the burner 20 to burn.

Further, in response to ignition control of the burner 20, a convection control section 59
The convection fan 15 is driven to circulate indoor air.

At this time, the upper duct 16a on the upper outlet 13 side is closed by the switching damper 17, and the suction inlet 11 and the hot air outlet 12 are communicated with each other.

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

When the heating operation is instructed to stop, combustion of the burner 20 is stopped by predetermined fire extinguishing control, and then the convection duct 1
When the temperature inside 6 falls, the convection fan 15 stops.

Note that in the case of heating operation, the convection fan 15 is controlled according to the combustion control state in the combustion control section 58, and does not accept settings by the air volume setting device 52a.

(2) Purification independent operation When the purification switch 52 is operated and purification operation is instructed, the above-mentioned installation confirmation discrimination control is performed, and if there is no abnormality,
Controlling the convection control unit 59 to drive the convection fan 15;
At this time, the convection duct 16 on the hot air outlet 12 side is closed by the switching damper 17, and the suction inlet 11 and the upper outlet 13 are communicated with each other.

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

(3) Purification and heating operation When heating switch 51 and purification switch 52 are operated to instruct heating operation and purification operation, purification and heating operation is performed. At this time, the upper duct 16a on the upper air outlet 13 side is blocked by the switching damper 17, and the air inlet 11 and the hot air outlet 1 are closed.
2 and communicate with 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-only operation If heating operation is in progress and the change is made to purification-only operation, combustion of the burner 20 is stopped while only the convection fan 15 is driven, and the switch is made. The damper 17 is driven to open the convection duct 16 on the side of the hot air outlet 12, 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 burner 2
Since the temperature at 0 does not drop immediately, if air is blown out from the upper outlet 13 as it is, there is a risk that the cover member 14 forming the upper outlet 13 will be deformed or damaged by the heat. The cover member 14 is protected by delaying the switching of the duct by the switching damper 17 until a predetermined period of time has elapsed until the temperature drops to a level that does not affect the cover member 14 made of resin.

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

In each of the above operations, when indoor air passes through the suction port 11 due to the operation of the convection fan 15, the high voltage applied between each electrode 4 and 4.46 of the filter unit 40 causes cigarette smoke, pollen, etc. The activated carbon filter 4 is charged with particles and dust and is charged with a positive charge, and is connected to the negative electrode 46.
7 to remove dust, etc.

As described above, in this embodiment, the wire mesh 42 is provided at the suction port 11,
Since the resin net 43, the positive electrode 44, the electricity purchasing fi 46, and the activated carbon filter 47 are provided in this order, the filtering effect is good.
Also, when cleaning the gold #1i42, it is safe because each electrode is covered with the resin net 43.

In addition, in the case of a purification standalone operation in which no heating is performed by a burner, air is blown out from the upper outlet, so the air is less likely to hit the person directly, and the person does not feel a cold breeze. Therefore, you can spend your time comfortably without feeling like you are in purifying operation.

In the above example, a gas burner was shown as the heat source, but
The burner fuel may be petroleum, or an F
An F-type heater may also be used. The heat source may be an electric heat source other than a burner, and the heat source may be a cooling source for cooling as well as heating.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a gas hot air heater showing an embodiment of the present invention, FIG. 2 is a cutaway front view of the gas hot air heater, and FIG. 3 is a cross section showing the structure of the filter unit of this embodiment. Figure, 4th
The figure is a diffusion exploded view of the filter unit, and Figure 5 is a front sectional view of the filter unit showing the relationship between the positive and negative electrodes.
FIG. 6 is a functional block diagram for explaining the control device of this embodiment. In the diagram, 1... gas hot air heater (air conditioner), 10...
...Body case (casing), 11...Suction port, 1
2... Warm air outlet (outlet), 13... Upper outlet (outlet), 15... Convection fan (blower), 20
・Burner (heat source), 47...Activated carbon filter, 60...
Charging section (electrostatic precipitator). 5th cause

Claims (1)

[Claims] 1) A heat source and a blower are provided in a casing having an inlet and an outlet, and air is sucked into the casing from the inlet by the operation of the blower, and the temperature is changed by the heat source. An air conditioner that blows air from the outlet, wherein the inlet is provided with an activated carbon filter and an electrostatic precipitator using the activated carbon filter as a dust collection electrode.