JPH0668390B2 - Wastewater treatment equipment for air conditioners - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to drain water generated from an indoor heat exchanger by exchanging heat of indoor air during cooling, and heat exchange with an outdoor heat exchanger during heating. It is related to the treatment of drain water that occurs during operation.

2. Description of the Related Art Generally, when humid air is cooled by an indoor heat exchanger, drain water is generated. As one method for discharging this drain water to the outside of the room, there is a method of atomizing it with a sprayer and discharging it to the outside of the room.

An example of the above-described conventional air conditioner will be described below with reference to the drawings.

FIG. 6 is a side view showing a state in which a conventional air conditioner is installed on a window, in which 1 is an air conditioner body and 2 is fog.

FIG. 7 is a sectional view of the conventional air conditioner main body (hereinafter referred to as the main body) of FIG. 6, in which 3 is an indoor heat exchanger, 4 is a water tray, 5 is a sprayer, 6 is a discharge port, Reference numeral 7 is an outdoor heat exchanger.

First, the drain water treatment of the air conditioner configured as described above will be described.

First, in FIG. 7, dew generated by heat exchange with the air in the room is collected in the water receiving tray 4, atomized by the sprayer 5, and then scattered from the discharge port to the outside. That is, as shown in FIG. 7, the fog 2 is scattered from the main body 1 installed on the window to the outside.

A conventional air conditioner having such a configuration is disclosed in Japanese Utility Model Laid-Open No. 58-85123.

Problems to be Solved by the Invention However, in the above-mentioned configuration, the particles of the mist 2 generated by the atomizer 5 have only a small initial velocity given by the vibrator of the atomizer 5, etc. There was a problem in that it stayed in the neighborhood as smoke, giving the user anxiety as if smoke was being generated due to a device failure.

Further, in the defrosting cycle during heating, it was not possible to discharge the water generated by melting the frost adhering to the outdoor heat exchanger into mist and to discharge it outdoors in winter.

In view of the above problems, the present invention atomizes the drain water generated during the cooling operation and the molten water generated during the heating operation and the defrosting cycle, and retains the mist as smoke near the outdoor side of the main body 1. It is intended to provide an air conditioner that can be discharged to the outside without causing it.

Means for Solving the Problems In order to solve the above problems, the wastewater treatment device for an air conditioner of the present invention has an outdoor heat exchanger and air that has passed through the outdoor heat exchanger and has undergone heat exchange. An outdoor side blower for sending the air from the outdoor side air outlet of the air conditioner main body (hereinafter referred to as the main body) to the outside, and below the outdoor side heat exchanger, and below the outdoor side air outlet of the main body. In order to atomize the water collected in the water receiving tray and the water receiving tray provided in the water receiving tray,
A sprayer provided below the outdoor outlet of the main body, a thermostat that operates the sprayer according to the temperature of the outdoor heat exchanger, and a water level switch that operates the sprayer according to the water level of the water collected in the water pan It is a thing.

Action The present invention, by the above-mentioned configuration, the drain water generated by the cooling operation and the heating operation is collected in the water receiving tray, and due to the capillary phenomenon, the level of the drain water collected in the water receiving tray is higher than that of the spray hole of the sprayer. When the water level at which spraying is possible is caused by the vibration of the vibrator of the sprayer, the sprayer is operated by the water level switch on the water pan, and the spray speed of the sprayed mist is passed through the outdoor heat exchanger by the outdoor blower. It can be accelerated by the blown air sent out, and then the water collected in the water tray can be atomized and discharged from the main body to the outside.

However, when the outside air temperature becomes low, the frost phenomenon occurs in the outdoor heat exchanger, but when the frost layer grows above a certain level, the spray particles that should originally be scattered to the outside adhere to the outdoor heat exchanger. As a result, the heating capacity is significantly reduced. Therefore, to prevent this, the growth of the frost layer on the outdoor heat exchanger is detected by the temperature of the outdoor heat exchanger,
When the temperature of the outdoor heat exchanger falls below a predetermined temperature, the sprayer is stopped to prevent the heating capacity from decreasing.

Example Hereinafter, an air conditioner of an example of the present invention will be described with reference to FIGS. 1 to 5.

In the figure, 11 is an air conditioner main body (hereinafter referred to as the main body), 12 is an indoor heat exchanger, 13 is an outdoor heat exchanger,
Reference numeral 14 is an outdoor fan, 15 is a water tray, and 16 is a dew tray. Reference numeral 17 is an outdoor air outlet, and 18 is a sprayer. A is the ejected spray particles. Reference numeral 20 is water collected in the water pan, 21 is a water level switch for operating the sprayer according to the water level of the water 20 collected in the water pan 15, and 22 is the sprayer 18
Reference numeral 23 is a jetting hole of the sprayer 18. Reference numeral 19 is a thermostat for operating the sprayer 18 according to the temperature of the outdoor heat exchanger 13, and a circuit is configured as shown in FIG.

The operation of the wastewater treatment device for an air conditioner configured as above will be described.

First, considering the cooling operation, the drain water condensed on the fin surface of the indoor heat exchanger 12 is collected in the dew tray 16 and drops on the fin surface of the outdoor heat exchanger 13, and then the water tray 15 is filled. Be recovered.

Next, during the heating operation, the outdoor heat exchanger 13 functions as an evaporator, and the condensed water thereof is also stored in the water receiving tray 15.

On the other hand, when the water 20 is gradually collected in the water receiving tray 15 and the water level gradually rises, due to the capillary phenomenon, the sprayer 18 in the water level higher than the water level of the water 20 collected in the water receiving tray 15 is used. When the water in the ejection hole 23 is at a height at which it can be sprayed by the vibration of the vibrator 22 of the sprayer 18, a water level switch 21 for operating the sprayer is provided by the water level of the water 20 collected in the water pan 15, that is, the fifth level. In the figure, the contact of the water level switch 21 is closed, the second control device 26 that drives the sprayer 18 is overpowered, and the sprayer 18 is operated, and the mist A can be sprayed.

Further, after the air is blown through the outdoor heat exchanger 13 by the outdoor blower 14, the discharged spray particles A are accelerated by the air blown out from the outdoor air outlet 17 of the main body 11 indicated by the arrow. The spray particles A can be scattered far away without being retained near the outdoor side of the main body 11.

However, during heating operation, when the outside air temperature decreases, a frost phenomenon occurs in the outdoor heat exchanger, and when the growth of the frost layer reaches a certain level or higher, spray particles that should originally be scattered to the outside A does not scatter far away, is sucked into the outdoor heat exchanger 13, and then adheres to the outdoor heat exchanger 13 to freeze, thereby significantly reducing the heating capacity.

Therefore, based on the property that the temperature of the outdoor heat exchanger 13 decreases as the frost layer grows, the thermostat 1 that operates when the temperature of the outdoor heat exchanger 13 falls below a predetermined temperature.
The sprayer 18 is stopped by 9 to prevent the heating capacity from being lowered and the outdoor heat exchanger 13 to be frozen.

Effects of the Invention As described above, the present invention is an outdoor blower for sending out to the outdoors from the outdoor outlet of the air body that has passed through the outdoor heat exchanger, and is disposed below the outdoor heat exchanger, and By providing a water tray extending below the outdoor outlet of the main body and a sprayer below the main outlet to atomize the water collected in the water tray, the outdoor outlet is provided. The mist discharged by the air blown out from the outlet can be accelerated, and the mist can be scattered far away without being retained near the outside of the main body chamber.

Also, by providing a water level switch that operates the sprayer according to the water level of the water collected in the water pan, it is possible to eliminate the idle operation of the sprayer, and further, even in the heating operation at low outdoor temperature, the outdoor heat exchanger By the thermostat operated by the temperature, the frosting of the outdoor heat exchanger can be prevented by stopping the sprayer at the time of frosting above a certain level, and it is possible to prevent a significant decrease in heating capacity.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an essential part of an air conditioner according to an embodiment of the present invention, FIG. 2 is a schematic perspective view showing an internal configuration of the air conditioner, and FIG. 3 is a rear view of the air conditioner. FIG. 4 is a side view in which a part of the air conditioner is cut away, FIG. 5 is an electric circuit diagram of a water level switch and a thermostat in a wastewater treatment device of the air conditioner, and FIG. 6 is a conventional air conditioner. FIG. 7 is a side view showing a state in which the air conditioner is installed on a window, and FIG. 7 is a vertical sectional view of the air conditioner. 11 ... Air conditioner body, 13 ... Outdoor heat exchanger,
Ventilator, 14 ... Outdoor blower, 15 ... Water pan, 17 ...
Outdoor air outlet, 18 ... atomizer, 19 ... thermostat, 21 ... water level switch, 22 ... atomizer oscillator,
23 ... A spray hole of a sprayer.

Claims (2)

[Claims] 1. An outdoor heat exchanger, an outdoor blower for sending the heat-exchanged air passing through the outdoor heat exchanger to the outside from an outdoor air outlet of an air conditioner body, and the outdoor air. A water pan provided below the heat exchanger and extending below the outdoor air outlet of the air conditioner body, and an air conditioner for atomizing the water collected in the water pan. A sprayer provided below the outdoor outlet of the machine body, a thermostat that operates the sprayer according to the temperature of the outdoor heat exchanger, and a water level switch that operates the sprayer according to the water level of the water collected in the water pan Wastewater treatment equipment for air conditioners. 2. When the water in the ejection hole of the atomizer, which is at a higher water level than the water level recovered in the water pan due to the capillary phenomenon, is at a water level at which atomization is possible due to the vibration of the vibrator of the atomizer, The wastewater treatment device for an air conditioner according to claim 1, wherein the sprayer is operated by a signal from a detection unit that detects the water level of the water collected in the water receiving tray.