JPH08121807A - Air conditioner - Google Patents

Abstract

(57) [Summary] [Structure] In the cabinet 1, a float switch having floats 6a and 6b for detecting drain water generated from the heat exchanger 3 is arranged in a straight line, and a drain pump 5 and an air conditioner are provided. Controls the operation and shutdown of the main unit. [Effect] By arranging multiple floats in a straight line, it is possible to accurately grasp the drain water level, properly control the operation of the drain pump and the operation of the air conditioner body, and It is possible to avoid the occurrence and prevent water leakage from the water receiving section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner.

[0002]

2. Description of the Related Art A float switch provided in a conventional air conditioner has one float on a straight line and a fixed moving distance of the float. Therefore, the drain pump was forced to operate regardless of the drain water level.

[0003]

In the above prior art, one float is arranged in the float switch,
The position where the float switch is fixed was changed for each amount of water retained in the water receiver. The purpose of the float switch is to stop the operation of the air conditioner body when the float exceeds a certain height. Therefore, the drain pump was forced to operate at the same time as the start of cooling operation. This means that the drain pump is operated even when there is no drain water, which is so-called idle operation, and operation is outside the proper operation range of the drain pump. Also,
Since the forced operation is carried out even near the lowest pumped water level of the drain pump, (a) the drain water and air are discharged together, which causes abnormal noise from the air conditioner. Further, (b) the water scale and the like accumulated in the bottom portion of the water receiver are sucked into the drain pump together, causing the drain pump to malfunction.

[0004]

In an air conditioner including a blower section, a heat exchanger section, a water receiving section, and a drain pump in a cabinet, a float switch having a plurality of floats is arranged in a straight line. Characterize. Further, in the above air conditioner, it is possible to freely set the movement distance of a plurality of floats arranged on a straight line, eliminating the need to change the member fixing the float switch for each water retention amount of the water receiver, The fixing member can be commonly used, and the operation and stop of the drain pump and the air conditioner main body are controlled in association with the change in the drain water level accumulated in the water receiving portion.

[0005]

By providing the float switch in which the moving distances of a plurality of floats arranged on a straight line can be freely set, it is possible to share the member for fixing the float switch. Further, by operating this float switch in conjunction with the change in the drain water level accumulated in the water receiving portion, the drain pump can be operated properly. This makes it possible to operate the drain pump within an appropriate operating range.

[0006] Further, a float of the plurality of floats detects the vicinity of the lowest drain pump water level to control the operation and stop of the drain pump. This makes it possible to stop the drain pump when the drain water level is below the drain pump pumping water level and to operate the drain pump when the drain water level is higher than the drain pump pumping water level. To do.

Further, by detecting a certain float out of the plurality of floats near the maximum water holding amount of the water receiving portion,
Controls the operation and shutdown of the air conditioner body. This prevents the drain water from exceeding the maximum water holding capacity of the water receiving part, prevents the drain water from overflowing from the water receiving part, and allows the drain water to be forcibly discharged to continuously operate the drain pump. As a result, it is possible to automatically restore the operation of the air conditioner main body when the position of the float falls below the maximum water holding capacity of the water receiving portion.

[0008]

EXAMPLES Examples of the present invention will be described below with reference to FIGS.
This will be described with reference to FIGS. 3 and 4. The embodiment shown in FIG.
FIG. 4 is a detailed view of an air conditioner including a blower 2, a heat exchanger 3, a water receiver 4, and a drain pump 5 in the cabinet 1 shown in FIGS. 2 and 3, and detects a drain water level generated by the heat exchanger 3. A float 6 that is waterproof and floats on water.
The figure which arranged the float switch which has a and 6b on a straight line is shown.

With this structure, the movable stoppers 6c and 6 can be moved.
floats 6a, 6 arranged in a straight line by d, 6e
The moving distance of b can be freely changed. As a result, it is not necessary to change the fixing position and the structure of the member 7 for fixing the float switch for each water holding amount of the water receiver 4, and the member 7 can be shared. Also, float 6
By arranging a and 6b in a straight line, the drain water level can be accurately grasped, and the drain pump 5
It is possible to more appropriately control the operation of.

The content of the drain pump is that when the air conditioner starts and is in the cooling operation, the float 6a must rise to a certain height 6c in order to detect the drain water level generated by the heat exchanger 3. The operation of No. 5 is controlled so that it cannot be started. Then, after the cooling operation of the air conditioner is stopped, control is performed so that the operation of the drain pump 5 cannot be stopped unless the float 6a descends to a certain height. On the other hand, if the drain water level reaches a certain height of 6d, the cooling operation of the air conditioner body is automatically stopped, and the drain pump itself has a drain water level of 6c.
It keeps driving until it recovers. The air conditioner restarts operation after a certain period of time has elapsed after the drain water level has recovered to the level of 6d.

Therefore, this operation will be described with reference to FIG. FIG. 4 shows the positional relationship between the change in the amount of drain water accumulated in the water receiver 4 from the start of the cooling operation and the floats 6a and 6b arranged on a straight line, and the operating state of the drain pump 5 and the air conditioning depending on the positions of the floats 6a and 6b. Indicates the operating status of the machine.

First, the cooling operation of the air conditioner is started.
Then, the water droplets condensed on the heat exchanger 3 are dropped as drain water on the water receiver 4, and the drain water is accumulated on the water receiver 4. Then, the drain water raises the float 6a to the lowest pumped water level 6c of the drain pump 5, and operates the drain pump 5. As a result, it becomes possible to avoid the operation of the drain pump 5 when the water receiver 4 is free of drain water.

When the float 6b rises above the maximum water retention level 6d of the water receiver 4, the operation of the air conditioner itself is stopped. This prevents the drain water from exceeding the maximum water holding capacity of the water receiver 4. As a result, the drain water is prevented from overflowing from the water receiver 4, and the drain pump 5 is continuously operated to forcibly discharge the drain water, and when the position of the float 6b becomes lower than the maximum water holding amount water level 6d of the water receiver 4, it is kept constant. Enables automatic return of the operation of the air conditioner body over time.

Further, after the cooling operation is stopped, the drain water generated from the heat exchanger 3 is continuously discharged, and the float 6a descends to the lowest pumping water level 6c of the drain pump 5, or after a certain period of time, the drain pump 5 To stop.
This makes it possible to operate the drain pump 5 in accordance with the drain water from the heat exchanger 3 generated after the cooling operation is stopped and the amount of water retained in the water receiver 4.

As a result, it is possible to operate the drain pump 5 within an appropriate operating range, prevent drain water and air from being discharged together in the vicinity of the lowest pumped water level of the drain pump 5, and prevent abnormal noise from being generated. Allows you to prevent.

[0016]

According to the present invention, the float switch having a plurality of floats is arranged on a straight line, and the float moving distance can be freely set. Therefore, the float switch is set for each water holding amount of the water receiving portion. Since it is not necessary to change the member for fixing the float switch, the member for fixing the float switch can be shared. Further, by arranging a plurality of floats in a straight line, it is possible to accurately grasp the drain water level, and it is possible to properly operate the drain pump. Furthermore, avoid operation of the drain pump near the lowest pumping position and below,
That is, it is possible to prevent the drain water and the air near the lowest pumped water level of the drain pump from being discharged together, and to prevent the generation of abnormal noise. Also, by detecting the vicinity of the maximum water holding amount of the water receiving part, the operation of the air conditioner main body is stopped and the drain water is prevented from exceeding the maximum water holding amount of the water receiving part. It is possible to prevent the water from overflowing and forcibly discharge the drain water by the drain pump, so that the operation of the air conditioner main body can be automatically restored.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of arrangement of another embodiment of the present invention.

FIG. 3 is an explanatory view showing an example of arrangement of another embodiment of the present invention.

FIG. 4 is a time chart of the present invention.

[Explanation of symbols]

1 ... Cabinet, 2 ... Blower, 3 ... Heat exchanger, 4 ... Water receiver, 5 ... Drain pump, 6a, 6b ... Float, 6c,
6d, 6e ... stopper, 7 ... float fixing member.

Claims (1)

[Claims] 1. A fan unit, a heat exchanger unit, and
In an air conditioner equipped with a water receiver and a drain water drainage device, a float switch having a plurality of floats which are waterproof and float on the water in a straight line in order to detect the drain water level generated from the heat exchanger part. An air conditioner characterized by being provided with.