JPH0148458B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an air purifier for maintaining a constant temperature and humidity for a highly purified supply air stream and supplying the same to an air purification room. The present invention relates to a room air conditioner.

[Prior art]

Figure 1 shows a conventional air conditioner of this type. In this figure, 1 is a front-stage filter for removing coarse foreign matter from supplied outside air, 2 is a cooler/heater, and 3 is for outside air supply. 4 is a water scrubber for cleaning, 5 is a medium-performance post-filter that removes fine foreign matter, for example, 50 to 50% of foreign matter with a particle size of 0.3 μm or more is removed.
More than 80% of them are now being collected. 6 is a heater for the supply air flow, which serves to ultimately control the outlet temperature to the room A to be constant. 7 is a dehumidifier, which similarly serves to ultimately control the humidity of the air supplied to the room A at a constant level. 8
is a HEPA (High Efficiency) installed on the indoor ceiling.
Particulate Air) filter (hereinafter referred to as the final filter) removes ultrafine foreign matter with a particle size of 0.1 μm or more.
It has become possible to capture more than 99.97%. Reference numeral 9 denotes an outside air supply duct to the air space A, in which each of the above-mentioned necessary members is arranged in the above-mentioned order from the upstream side to the downstream side of the circulating air.

In the above configuration, the outside air taken in by the drive of the blower 3 passes through the outside air supply duct 9 and is blown into the room A, but at this time, the outside air is first passed through the pre-filter 1 for removing coarse particles. The water is purified and temperature-controlled in the cooler/heater 2, then passed through the blower 3 and then in the water scrubber 4.
In particular, ionized mist or ionized substances such as various types of dirt are dissolved in water droplets and collected.

Next, the medium-performance second-stage filter 5 removes foreign matter having a particle size of 0.3 μm or more that has passed through the water scrubber 4 with a collection efficiency of 50 to 80% or more. Next, the heater 6 controls the temperature at a constant temperature, and the dehumidifier 7 controls the humidity at a constant temperature, with a collection efficiency of 99.97% for foreign matter of 0.1 μm or larger.
The water is sent into the room A through the final filter 8, which removes the water with the above performance.

Since the conventional air conditioner is configured as described above, the water scrubber 4 removes ionized substances such as dust, ionized mist, and water droplets with a size of 3 μm or more, but smaller ultrafine particles are removed. In addition, since the cleaning water itself increases the relative humidity of the circulating air, the medium-performance latter-stage filter 5 re-disperses the collected foreign matter.
The final filter 8 is caused to become clogged. Also,
The medium-performance second-stage filter 5 and the final filter 8 themselves have properties that make it difficult to collect moisture such as mist and water droplets, so as a result, the indoor A
Foreign substances such as ionized mist and water droplets enter the water, resulting in contamination with so-called water-soluble ionized substances. In particular, this phenomenon often occurs under outside air conditions with a large amount of fine mist, such as during a typhoon or heavy rain.

[Summary of the invention]

This invention was made in order to eliminate the drawbacks of the conventional ones as described above.In particular, the use of the problematic water scrubber was stopped and the intake of the outside air supply duct was replaced with a wire mesh of mesh number 60 to 100. The filter is characterized in that a heater for removing water-soluble ionized substances is provided immediately before the upstream side of the closed and medium-performance downstream filter. The present invention will be explained below with reference to the drawings.

[Embodiments of the invention]

FIG. 2 is a diagram showing an embodiment of the present invention.
Note that the same reference numerals as in FIG. 1 indicate the same things, but for convenience of explanation, they will be explained in the same way as the other reference numerals. In this figure, reference numeral 10 denotes a wire mesh of No. 60 to No. 100 which is stretched in a sealed manner at the entrance of the outside air supply duct 9, and is used for both dehumidification and dehumidification; 1 is a pre-stage filter for removing coarse particles of, for example, 3 μm or more; and 11 is a An eliminator provided after this pre-stage filter 1, and a wire mesh 10
and the remaining 3 to 5μ that passed through pre-stage filter 1
Removes coarse foreign matter such as mist, water droplets, and fine particles of 60 m or more.
It serves to remove about 70%. 3 is a blower for supplying outside air; 12 is a second front-stage filter for removing coarse particles similar to the above, which is provided after the blower 3;
Reference numeral 13 denotes a second eliminator installed opposite to this, and its material and performance are the same as those of the eliminator 11 described above. Reference numeral 6 denotes a heater installed after the eliminator 13, which controls the relative humidity of the circulating air.
It serves to make it lower. 5 is a medium-performance latter-stage filter installed after this heater 6, with a particle size of 0.3μ.
It serves to remove about 50 to 80% of fine particles of m or more. Reference numeral 14 denotes a second medium-performance rear-stage filter, which has the effect of removing 90% or more of fine foreign matter with a particle size of 0.3 μm or more.

Reference numeral 15 denotes a humidity control device for the so-called downstream circulating air discharged from each of the above-mentioned members, and serves to humidify and dehumidify the circulating air to maintain a constant humidity.
Reference numeral 16 denotes a temperature control device provided at a later stage, which serves to maintain the circulating air at a constant temperature. 8 is the final filter installed on the ceiling of the room, which functions to send clean air into room A after removing more than 99.97% of ultrafine particles with a particle size of 0.1 μm or more. 9 is outdoor and indoor A
An outside air supply duct 17 connecting the outside air supply duct 9 is a drain pipe for draining water that has been removed and accumulated by a wire mesh 10 provided at the entrance of this outside air supply duct 9.

In the above configuration, when there are large water droplets in the outside air due to a typhoon or heavy rain, they are first removed by the wire mesh 10 and discharged to the outside by the drain pipe 17. By passing through the filter 1, eliminator 11, blower 3, second pre-stage filter 12 and eliminator 13 provided downstream of the blower 3, the conventional water scrubber 4 is abolished,
Particle size 5μ that was not removed by this water scrubber 4
Coarse particles such as dust, water droplets, and mist are removed. Then, the relative humidity of the circulating air is lowered to a predetermined deliquescent humidity of the ionized substance to be removed or less by a heater 6 provided on the downstream side thereof.

By doing so, the mist and water droplets in the circulating air are reliably removed by each of these front-stage members, and in particular, the medium-performance rear-stage filter 5 and the second medium-performance rear-stage filter 1, which are weak in these, are reliably removed.
After that, a medium-performance second-stage filter 5 removes about 50 to 80% of fine foreign matter with a particle size of 0.3 μm or more, and then a second high-performance second-stage filter 14 removes about 90% of fine particles with a particle size of 0.3 μm or more. % or more removed.

In this way, the highly purified circulating air is maintained at a constant humidity by the humidity controller 15 and at a constant temperature by the temperature controller 16 before being sent to the final filter 8. For example, 99.97% or more of ultrafine particles with a particle diameter of 0.1 μm or more are removed and sent to room A.

In the above embodiment, the wire mesh 10, the pre-stage filter 1, the eliminator 11, the blower 3, and the second pre-stage filter 12 and the eliminator 13 on the downstream side thereof are provided in this order, but it is possible to change the combination of these or The increase or decrease in the number of filters used is
There is no problem in performing this after considering the control ability of the heater used at that time and the burden on the medium-performance downstream filter, and the same effect as described above can be obtained. Others, drain pipe 1
Of course, the entrance 7 is not limited to the wire mesh 10, and may be provided for each filter along the way.

〔Effect of the invention〕

As explained above, the air conditioner for an air cleaning room of the present invention includes a wire mesh for removing bulky debris and water droplets at the outside air intake of the outside air supply duct, and a second front stage filter and a heater at the rear stage of the blower. established,
In addition, multiple post-stage filters are provided, and a humidity control device and a temperature control device are provided after these post-stage filters, so that foreign substances such as dust, water droplets, and mist can be accurately removed even during a typhoon or heavy rain. In addition, there is no indoor contamination caused by ionized mist, which has been a problem in the past, and the room can be kept in a highly clean state at all times.

[Brief explanation of drawings]

FIG. 1 is an internal configuration diagram showing a conventional air conditioner for an air cleansing room, and FIG. 2 is an internal configuration diagram showing an embodiment of the air conditioner for an air cleansing room according to the present invention. In the figure, 1 and 12 are front stage filters, 3 is a blower,
5 and 14 are rear-stage filters, 6 is a heater, 9 is an outside air supply duct, 10 is a wire mesh, 11 and 13 are eliminators, 15 is a humidity controller, 16 is a temperature controller, and 17 is a drain pipe. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. In an air conditioner equipped with an outside air supply duct for sending clean air indoors, a front-stage filter for removing coarse foreign matter, a blower, a rear-stage filter for eliminating fine foreign matter, and a final filter for eliminating extremely fine foreign matter, The outside air intake of the outside air supply duct is provided with gold steel for removing bulky debris and water droplets, a second front-stage filter and a heater are installed at the rear stage of the blower, and a plurality of rear-stage filters are provided, and these rear-stage filters An air conditioner for an air cleaning room, characterized in that a humidity control device and a temperature control device are provided at a subsequent stage.