JPH0752495Y2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an air conditioner including a drain pump and a drain water overflow prevention sensor, such as a ceiling-embedded air conditioner.

[Conventional technology]

A conventional technique will be described with reference to FIG. 2 showing an embodiment of the present invention. In FIG. 2, when the cooling operation is performed, the air heat exchanger 8 dehumidifies and the drain collects in the drain pan 4.
It is drained up to the drain pipe connection port 3 by the drain pump 5, and the drain water is discharged by the drain pipe connected at the site. However, if the drain water is not discharged due to the drain piping being connected to the reverse slope due to poor construction at the site or the drain piping being clogged after being used for many years, the drain water will collect in the drain pan 4 and eventually the drain water overflow prevention sensor 7 activates and stops the unit. Conventionally, as a method for draining the accumulated drain water, drainage is performed through a trap drain port 6 provided in the lower portion of the drain pan 4, or the drain pump 5 attached to the main body after removing the cause of the problem. It was forcibly drained by the trial run switch. Therefore, when draining from the auxiliary drain port 6, there is a problem that the surroundings are leaked with water, and when using the trial run switch, the decorative panel 9 must be removed first, and there is a problem of shortening the drain pump life due to forgetting to turn off the trial run switch. there were.

[Problems to be solved by the invention]

As a drain water discharge method at the time of abnormality in the conventional air conditioner, as described above, it is necessary to leak the surroundings with drain water or remove the decorative panel, and decrease the drain pump life due to forgetting to turn off the trial run switch. There was a problem.

An object of the present invention is to solve the above-mentioned conventional problems and to provide an air conditioner capable of draining drain water easily and quickly.

[Means for solving problems]

The air conditioner according to the present invention comprises a drain pump for discharging the drain generated in the air conditioner, and a drain water overflow prevention sensor for detecting the dress water level and stopping the air conditioner when the water level is equal to or higher than a predetermined water level. (A) means for forcibly operating the drain pump by setting the operation mode to a mode other than the cooling mode by a remote controller when the sensor is activated and turned on, and (B) the drain pump A means for stopping the operation of the drain pump when the sensor is turned off after the forced operation or when the on time of the sensor does not turn off even after a set time has passed. An air conditioner.

[Action]

According to the present invention, when the drain water overflow prevention sensor is activated during the cooling operation, the operation mode of the changeover switch of the remote control switch (remote control) is switched to the heating or air blowing mode so that the heating or air blowing operation is not performed. , By forcibly operating only the drain pump to discharge the drain, thereby stopping the operation of the drain pump when the sensor returns or when the forced operation set time of the drain pump has elapsed, Drain can be discharged quickly.

〔Example〕

FIG. 1 is an external perspective view of a ceiling-embedded air conditioner according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and 1 is a ceiling-embedded air conditioner main body, 2 is a drain pump box, 3 is a drain pipe connection port, 4 is a drain pan, 5 is a drain pump, 6 is an auxiliary drain port, 7 is an overflow prevention sensor, 8 is an air heat exchanger, 9 is a decorative panel, and 10 is a ceiling. Show.

The operation of the embodiment of the present invention will be described.

In FIG. 1 and FIG. 2, for example, when drain water is accumulated in the drain pan 4 due to defective drain and the drain water overflow prevention sensor 7 is activated and the air conditioner (air conditioner) is stopped, the operation mode of the air conditioner is set to other than the cooling mode. The forced operation of the drain pump 5 will be described with reference to the flowchart of FIG.

In FIG. 3, when the air conditioner abnormally stops (the drain pump 5 also stops), the drain water overflow prevention sensor 7 may be turned on as one of the causes. At that time, when the drain pump 5 is normal, the drain pipe may have a reverse slope, or the drain pipe may be clogged. Therefore, by correcting those problems, the remote controller shown in FIG.
When 11 is set to a mode other than the cooling operation (for example, air blowing operation), only the drain pump 5 is forcibly turned on and the drain water is forcibly discharged. As a result of forced drainage of drain water,
When the drain water overflow prevention sensor 7 returns, the drain pump 5 is stopped and the forced operation is ended. If the drain water overflow prevention sensor 7 does not recover even after a preset time (for example, 5 minutes), the forced operation of the drain pump 5 is stopped and stopped.

In this embodiment, the drain pump 5 is forcibly operated only when set to a mode other than the cooling operation, but the drain pump may be forcibly operated in combination with other conditions other than the operation mode. Absent. (For example, blow operation, forced operation only when the room temperature is set to 30 ℃).

Explaining further according to the block diagram of FIG. 5, the current water level by the drain water level detecting means 12 and the preset value of the reference drain water level setting means 13 are determined by the water level comparing means 14, 15 to set the water level. If it is lower than the value, the air conditioner continues to operate, and if the water level is higher than the set value, the drain water overflow prevention sensor turns on and the air conditioner abnormally stops 17.

Thus, the drain pump 5 is inspected by means not shown, and when the drain pump 5 is normal, a defect such as a reverse inclination of the drain pipe or a clogging of the drain pipe is corrected.

After that, by operating the remote controller 11 in a mode other than the cooling operation and sending a signal from the remote controller 11 to the drain pump forced operation command output means 18, the drain pump 5 starts operation.

The drain water is discharged by the operation of the drain pump 5, and the comparison means 19 determines that the water level of the drain water level detection means 12 is lower than the set value of the reference drain water level setting means 13, and when the prevention sensor 7 is turned off, the drain pump stop command is issued. The drain pump 5 is stopped via the means 23.

On the other hand, when the drain pump 5 starts operating, the operating time detecting means 20 detects the ON time of the prevention sensor 7 via the comparing means 19. The comparison means 21 compares the ON time with the set value of the reference operating time setting means 22, and when the ON time reaches the set value, the drain pump 5 is stopped via the drain pump stop command means 23.

[Effect of device]

Conventionally, in order to drain the drain water collected in the drain pan, it is drained from the auxiliary drain port provided at the bottom of the drain pan, or the drain water is forcibly discharged by the trial run switch of the drain pump. The surroundings were wetted with water, or the test run switch was forgotten to be turned off, which shortened the drain pump life. According to the present invention, it is possible to solve the above-mentioned problems and eliminate the need to remove the decorative panel.
Excellent effects such as easy and quick drainage of drain water can be obtained.

[Brief description of drawings]

FIG. 1 is an external perspective view of a ceiling-embedded air conditioner according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 shows the operation of the embodiment of the present invention. FIG. 4 is a flow chart showing the example of the remote controller according to the embodiment of the present invention.
FIG. 5 is a block diagram showing the construction of an embodiment of the present invention. [Explanation of symbols] 1 ... Main body of air conditioner embedded in ceiling, 2 ... Drain pump box, 3 ... Drain piping connection port, 4 ... Drain pan, 5 ...
... Drain pump, 6 ... Auxiliary drain port, 7 ... Overflow prevention sensor, 8 ... Air heat exchanger, 9 ... Decorative panel, 10 ... Ceiling, 11 ... Remote control, 12 ... Drain water level detection means, 13 …… Standard drain water level setting means, 14 …… OFF
Point comparison means, 15 …… ON point comparison means, 16 …… Air conditioner operation continues, 17 …… Air conditioner abnormal stop, 18 …… Drain pump forced operation command output means, 19 …… First comparison means, 20 …… Operating time Detecting means, 21 ... second comparing means, 22 ... standard operating time setting means, 23 ... drain pump stop commanding means.

Claims (1)

[Scope of utility model registration request] 1. A drain pump (5) for discharging drain generated in an air conditioner, and a drain water overflow prevention sensor (7) for detecting a drain water level and stopping the air conditioner when the water level is equal to or higher than a predetermined water level. (A) When the sensor (7) is activated and turned on,
A means (18) for forcibly operating the drain pump (5) with the operation mode other than the cooling mode by the remote controller (11), and (B) the sensor (7) after the drain pump (5) is forcibly operated. ) Is turned off, or when the on time of the sensor (7) does not turn off even after the set time has elapsed, means (23) for stopping the operation of the drain pump (5) is provided. A characteristic air conditioner.