JPH0224012Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to an air conditioner equipped with an electrostatic air purifier.

<Prior art> As a conventional example of this type of air conditioner, the one shown in FIG. The air conditioner includes a ventilation path 17' formed by the heat exchanger 7' and the outlet 15', and a blower fan 16' in the ventilation path 17'. In between, an electrostatic dust collection unit 12' is installed at approximately the same height as the heat exchanger 7'.
It was equipped with

<Problems to be solved by the invention> Although this conventional example has a large dust collection effect, the thickness of the electrostatic dust collection unit 12' makes it difficult to use in general air conditioners that are not equipped with the dust collection unit 12'. In comparison, it is thicker in depth and heavier in weight, and its appearance does not suit the current trend of thinner, lighter, and more compact air conditioners.

<Means for solving the problem> In order to solve the conventional problem, a thin part is provided in a part of the heat exchanger, and an electrostatic dust collection unit (hereinafter referred to as It is equipped with a dust collection unit).

<Function> Large dust particles are removed from the air sucked into the air conditioner by the prefilter 6. Next, some of the air passes directly through the heat exchanger 7, and other air passes through the dust collection unit 12 for air purification. As it passes through, fine dust, smoke, bad odor, dust mites, and other floating matter in the air are sufficiently removed, and the air passes through the heat exchanger 7 where heat is exchanged and blown into the room by the blower fan 16.

At this time, many relatively large holes are opened in the dust collection unit 12, and the dust collection unit 1
The thin width part 8 of the heat exchanger 7 to which the heat exchanger 2 is attached has a smaller resistance than the conventional example due to the part of the dense fins 9 being removed, and this part can effectively collect dust without reducing the air volume. will be carried out.

Of course, a sufficient amount of air flows into the heat exchanger 7 other than the thin width portion 8, and sufficient air conditioning can be achieved.

<Example> To explain an example of FIG. 3 from FIG. 1, 1
1 is a front panel that covers the front surface of the indoor unit of the air conditioner, and has a front door 3 in which a suction port 2 is opened in the form of a slit in most of the front panel except for a part on the right side of the front surface.

An opening/closing fitting 4 is attached to the upper back surface of the front door 3 so that the front door 3 can be opened and closed freely.

Numeral 5 is a casing that covers the rear surface while retaining air from the front panel 1, and 6 is a pre-filter that removes relatively large dust, which is detachably attached to the rear surface of the suction port 2. Reference numeral 7 denotes a horizontally long flat heat exchanger located behind the pre-filter 6, with a heat exchanger located above or below the side facing the pre-filter 6, preferably in a part of the upper part in the vertical and width directions in order to prevent dew condensation and the air volume. about 1/
A fin 9 other than the thin width portion 8 is provided with a meandering heat exchange tube 10.

A dust collection unit 12 is attached to the thin width part 8 via a frame-shaped insulating member 11 so as not to protrude. The dust collection unit 12 has two on the left and right, and is a collection unit in which a plurality of square holes 12b each side of which is approximately 15 mm are regularly opened in a discharge counter electrode 12a connected to a positive power source and one side of which is bent downstream. It is a combination of unit plates 12d, 12d, 12d, each having a dust pole piece 12e and a needle-shaped discharge electrode 12c connected to a negative power source from the back side located toward the center of each square hole 12b (Fig. 3). a, b, c),
A handle 13 for use in removing the dust collecting unit 12 is provided at the lower front surface, and the dust collecting unit 12 is fixed to end plates 14 at both ends of the heat exchanger 7 via insulating members 11.

In addition, when the dust collection unit 12 is energized, a voltage of about 7kV DC boosted by a transformer (not shown) is loaded (negative discharge) between the discharge counter electrode 12a and the discharge electrode 12c, causing fine dust, smoke, and bad odors in the air. , electrifying floating matter such as mites, and each dust collection pole piece 12e
Attracts and adsorbs to.

15 is an air outlet, 16 is a fan provided in the ventilation path 17, 18 is a wind direction plate provided in the air outlet 15,
19 is a dew saucer.

Also, when the front door 3 is opened, the dust collection unit 12
A stabilizing means (not shown) is provided to automatically stop energization.

Note that the heat exchanger 7 has been made smaller to ensure space for the dust collection unit 12, and in order to prevent the cooling and heating capacity from decreasing, the heat exchanger tube 10 may be made of a grooved copper tube or the fins 9 may be improved. This increases efficiency.

Next, a cleaning performance graph shown in FIG. 4 based on experimental results when cigarette smoke is used as dust will be explained.

Measurement method 1 Measuring room; Western-style room, floor area 8 tatami 2 Dust source: 10 cigarettes (Seven Star) 3 Dust removal concentration measuring device: Shida Chemical dust counter 4 Measuring procedure: Smoke from 10 cigarettes in the measuring room After filling the room uniformly, the air conditioner/air purifier was operated, and the dust concentration in the room was measured at regular intervals.

Natural sedimentation in the graph refers to the residual rate of dust in the natural state, general air conditioners refer to those that do not have air purifying functions, and filter type air purifiers refer to those manufactured by M Company (model MS-R20), or The conventional air conditioner is the air conditioner shown in Fig. 5, and the electrode type air purifier is manufactured by M Company (model MS-R400).

What can be seen from this figure is that even though the size of the dust collection unit 12 in the air conditioner of this invention is approximately 1/2 that of the conventional air conditioner, 30 minutes after measurement, In the conventional example, the dust residual rate is
Compared to 10%, this invention has a 24% difference, so although there is a numerical difference of 14%, there is not a big difference in reality, considering that the filter type air purifier has a 48% difference. This invention has sufficient performance as a household air purifier, and moreover, when operating for a long time, it exhibits almost the same performance as a conventional air conditioner.

Therefore, when this air conditioner is operated, even if the dust collection unit 12 and heat exchanger 7 are each smaller than the conventional example, the dust collection capacity and the air conditioner's original capacity (cooling/heating) will not decrease. However, compared to general air conditioners and filter-type air purifiers, the dust collection effect is extremely large. Furthermore, the overall width and weight of the air conditioner has the advantage of being lighter and more compact than the conventional example.

<Effect of the invention> By providing a thin width part in a part of the heat exchanger and attaching an electrostatic dust collection unit for air purification to the thin width part, air conditioning can be achieved while having sufficient dust collection effect. Of course, it is thinner, lighter, and more compact than the conventional example. Furthermore, the heat exchanger and the electrostatic precipitator unit can be miniaturized and therefore provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an embodiment of this invention, Fig. 2 is a detailed view of the main parts, Fig. 3 is an exploded explanatory view of the electrostatic dust collection unit, Fig. 4 is a graph of performance test results, and Fig. 4 is a graph of performance test results. FIG. 5 shows a conventional example. 2...Suction port, 6...Filter, 7...Heat exchanger, 8...Thin width section, 12...Electrostatic dust collection unit, 15...Blower outlet, 16...Blower fan, 17
...Ventilation route.

Claims (1)

[Scope of utility model registration request] In an air conditioner in which a ventilation path 17 is formed by the suction port 2, the heat exchanger 7, and the air outlet 15, and a blower fan 16 is provided in the ventilation path 17, heat exchange on the side facing the suction port 2 is performed. Thin width part 8 in part of container 7
An air conditioner characterized in that the thin width part 8 is provided with an electrostatic dust collection unit 12 for air purification.