JPH10300118A - Control method of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent water from overflowing a drain pan when the draining function has declined due to dust, etc., choking a draining member connected to the drainage hole of the drain pan. SOLUTION: An air conditioner has for its control a casing, an indoor heat exchanger 10 provided in the casing and having a heat-exchanger pipe for guiding a low-temperature fluid, a drain pan 30 which has a drainage hole 31, is provided under the indoor heat exchanger 10, and collects water falling in droplets through condensation on the outside surface of the indoor heat exchanger 10, a drainage member 32 which is connected to the drainage hole 31 of the drain pan 30 and leads the water in the drain pan 30 to the outside of the casing, and a detective member 34 which detects whether or not the water stored in a drain pan 30 has surpassed a certain fixed level. When the detective member 36 finds that the water in the drain pan 30 has risen above the fixed level, low-temperature fluid is stopped from being guided into the heat-exchanger pipe so as to reduce the quantity of the condensate produced on the outside surface of the indoor heat exchanger 10 and prevent the water stored in the drain pan 30 from overflowing the drain pan 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an air conditioner, and more particularly to a method in which a drain member connected to a drain outlet of a drain pan is clogged with dirt and the like and the drain function deteriorates, and water overflows from the drain pan. The present invention relates to a method for controlling an air conditioner, which can prevent the air conditioner from occurring.

[0002]

2. Description of the Related Art Conventionally, in an air conditioner, a drain pan is provided below an indoor heat exchanger in a casing, and a drain member (for example, a drain hose) is provided at a drain port of the drain pan. Water is condensed and dropped on the outer surface of the indoor heat exchanger and is guided to the outside of the casing through a drain pan and a drainage member.

[0003]

However, the drainage member connected to the drainage port of the drain pan may be clogged with small debris or the like that cannot be removed by the filter, and the drainage function may be deteriorated. Garbage is
Before heat exchange with the indoor heat exchanger, it is removed by a filter, but small dust cannot be removed by the filter, and drops into the drain pan together with water condensed on the outer surface of the indoor heat exchanger. If such a state is left unattended, there is a problem that the water level of the drain pan gradually rises, and eventually the water overflows from the drain pan and wets the floor and ceiling.

An object of the present invention is to provide a method of operating an air conditioner which eliminates the above-mentioned conventional problems.

[0005]

In order to achieve the above object, a method for controlling an air conditioner according to the present invention comprises: a casing;
An indoor heat exchanger having a heat exchanger pipe provided in the casing and guiding a low-temperature fluid, and the water condensed and dropped on the outer surface of the indoor heat exchanger. A drain pan provided below the indoor-side heat exchanger and having a drain port, a drain member connected to the drain port of the drain pan, and guiding water in the drain pan to outside the casing, and a drain pan. A detecting member for detecting whether or not the stored water exceeds a certain value, and when the water stored in the drain pan exceeds a certain value by the detecting member, a low-temperature fluid flows into the heat exchanger pipe. , The amount of water condensed on the outer surface of the indoor heat exchanger is reduced, and the water stored in the drain pan is prevented from overflowing the drain pan.

[0006] The control method of the air conditioner of the present invention is as follows.
A casing, an indoor heat exchanger having a heat exchanger pipe provided in the casing and guiding a low-temperature fluid, and water condensed and dropped on the outer surface of the indoor heat exchanger. A drain pan provided below the indoor heat exchanger and provided with a drain port for receiving the water, and a drain member connected to the drain port of the drain pan and guiding water in the drain pan to outside the casing. A detection member for detecting whether or not the water stored in the drain pan has exceeded a certain value, and when the water stored in the drain pan by the detection member exceeds a certain value, it is determined that an abnormality has occurred. The notification is made by a sound, a lamp, or the like.

[0007] The method of controlling an air conditioner of the present invention comprises:
A casing, an indoor heat exchanger having a heat exchanger pipe provided in the casing and guiding a low-temperature fluid, and water condensed and dropped on the outer surface of the indoor heat exchanger. A drain pan provided below the indoor heat exchanger and provided with a drain port for receiving the water, and a drain member connected to the drain port of the drain pan and guiding water in the drain pan to outside the casing. A detection member for detecting whether or not the water stored in the drain pan exceeds a certain value, and when the water stored in the drain pan exceeds a certain value by the detection member, the heat exchanger pipe In order not to guide the low-temperature fluid into the inside heat exchanger, the amount of water condensed on the outer surface of the indoor heat exchanger is reduced, and the water stored in the drain pan is prevented from overflowing from the drain pan and abnormally. is there Sound the door, but to inform the lamp.

[0008] The control method of the air conditioner of the present invention includes:
The casing, the indoor heat exchanger and the humidifier provided in the casing, the water condensed and dropped on the outer surface of the indoor heat exchanger, and remained without being humidified by the humidifier. In order to receive water, a drain pan provided below the indoor heat exchanger and the humidifier and provided with a drain port,
A drain member connected to the drain port of the drain pan to guide the water in the drain pan out of the casing; and a detecting member for detecting whether the water stored in the drain pan exceeds a predetermined value. The water to be supplied to the humidifier is supplied through a water supply passage, and when the water stored in the drain pan by the detection member exceeds a certain value, water is not supplied to the humidifier. Thus, the water stored in the drain pan is prevented from overflowing from the drain pan.

Further, the control method of the air conditioner of the present invention is as follows.
The casing, the indoor heat exchanger and the humidifier provided in the casing, the water condensed and dropped on the outer surface of the indoor heat exchanger, and remained without being humidified by the humidifier. In order to receive water, a drain pan provided below the indoor heat exchanger and the humidifier and provided with a drain port,
A drain member connected to the drain port of the drain pan to guide the water in the drain pan out of the casing; and a detecting member for detecting whether the water stored in the drain pan exceeds a predetermined value. The water to be supplied to the humidifier is supplied through a water supply passage, and when the water stored in the drain pan exceeds a predetermined value by the detection member, a sound, a lamp, or the like is provided to notify that the water is abnormal. Is to do so.

[0010] The control method of the air conditioner of the present invention includes:
The casing, the indoor heat exchanger and the humidifier provided in the casing, the water condensed and dropped on the outer surface of the indoor heat exchanger, and remained without being humidified by the humidifier. In order to receive water, a drain pan provided below the indoor heat exchanger and the humidifier and provided with a drain port,
A drain member connected to the drain port of the drain pan to guide the water in the drain pan out of the casing; and a detecting member for detecting whether the water stored in the drain pan exceeds a predetermined value. The water to be supplied to the humidifier is supplied through a water supply passage, and when the water stored in the drain pan by the detection member exceeds a predetermined value, water is not supplied to the humidifier. Thus, the water stored in the drain pan is prevented from overflowing from the drain pan, and the fact that the water is abnormal is notified by a sound or a lamp.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 to 6, reference numeral 1 denotes an air conditioner. It is suspended and supported.

A suction port 4 and an air outlet 5 are provided on the ceiling, and the air inlet 4 and the air inlet of the air conditioner 1 are connected by the suction duct 6 to the air outlet 5 and the air outlet of the air conditioner 1. , And the outlet duct 7.

Inside the casing 1a of the air conditioner 1, there is provided an indoor heat exchanger 10 having a heat exchanger pipe for guiding a low-temperature fluid during cooling and a high-temperature fluid during heating. The heat exchanger pipe is, for example, cold and hot water, and may be configured to flow a refrigerant such as Freon in addition to the cold and hot water.

A humidifier 20 for humidifying during heating is provided near the indoor heat exchanger 10, and water is supplied to the humidifier 20 from outside the casing 1a via a water supply passage 21. An opening / closing valve 22 is provided in the middle of the water supply passage 21 so that the supply of water can be controlled. For example, as shown in FIG. 8 of Japanese Patent Application Laid-Open No. 4-116326, the humidifier 20 is provided with a corrugated flat bag 23 holding water supplied through a water supply passage 21. The separators 24 are stacked in a roll and the whole is rolled and placed in the outer frame 25.
When the air passes through the air passage 26 formed on the outer surface of the bag 23, it is humidified. 27 is a drain pipe.

The humidifier 20 is not limited to the one described above.
If water is supplied from outside the casing 1a through the water supply passage 21 and humidified, for example, Japanese Patent Laid-Open No. 7-103520
The humidifier may be a unit-type evaporative humidifier described in Japanese Patent Application Laid-Open Publication No. H11-15095 or a humidifier using ultrasonic waves.

A blower 9 is disposed on the leeward side of the indoor heat exchanger 10 and the humidifier 20, and a drain pan 30 is provided below the indoor heat exchanger 10 and the humidifier 20.
The drain pan 30 has a drain port 31, and the drain port 31 has a drain pan.
A drainage member 32 (for example, a drain hose) for guiding the water inside 30 to the outside of the casing 1a is connected.

As a result, the water condensed and dropped on the outer surface of the indoor heat exchanger 10 and the water remaining without being humidified by the humidifier 20 are received by the drain pan 30 and then discharged by the drain member 32.
As a result, the water in the drain pan 30 is guided to the outside of the casing 1a.

Further, inside the drain pan 30, a detecting member 34 for detecting whether or not the water stored in the drain pan 30 has exceeded a predetermined value (the detecting member 34 is, for example, stored in the drain pan 30). When the water exceeds a certain value, a float switch that operates the switch and two electrode rods provided oppositely cause electricity to flow through the water when the water level reaches the two electrode rods, and the water is kept constant. And the like, which can detect whether or not a value has been exceeded.).

Therefore, if there is no clogging in the drain port 31 and the drain member 32, the water in the drain pan 30 becomes as shown in FIG.
It is led out of the casing 1a through the drainage member 32.

However, if the drain port 31 and the drain member 32 are clogged during cooling due to long-term use, the water level in the drain pan 30 rises as shown in FIG.
If the water stored in the drain pan 30 exceeds a certain value by the controller 34, the control device 100 prevents the low-temperature fluid from being introduced into the heat exchanger pipe of the indoor heat exchanger 10, for example, the indoor heat exchanger. 10 three-way valve on the inflow side and three-way valve on the outflow side
12 is switched from the state of FIG. 5 to the state of FIG. 6 to reduce the amount of water condensed on the outer surface of the indoor heat exchanger 10 and prevent the water stored in the drain pan 10 from overflowing the drain pan 10 I do. In some cases, the three-way valve 12 on the outflow side may be omitted. In the case where refrigerant such as chlorofluorocarbon flows into the heat exchanger pipe, the water level in the drain pan 30 rises,
When the water stored in the drain pan 30 by the detection member 34 exceeds a certain value, the control device 100 may stop the compressor (not shown) as the supply source.

When the amount of water stored in the drain pan 30 by the detecting member 34 exceeds a predetermined value, the control device 100 activates the abnormality evoking means 101 so that the abnormality is evoked by a sound or a lamp. I have to.

Therefore, according to the control method of the air conditioner, the water stored in the drain pan 30 is detected by the detecting member 34 for detecting whether the water stored in the drain pan 30 exceeds a predetermined value. Above, the amount of water condensed on the outer surface of the indoor heat exchanger 30 is reduced by not guiding the low-temperature fluid into the heat exchanger pipe, and the water stored in the drain pan 30 is Prevent it from overflowing,
Floor and ceiling etc. can be kept wet,
If the water in the drain pan 30 exceeds a certain value by the detecting member 34, the abnormality is notified by sound, lamp, etc., and the abnormality is aroused.
Cleaning work for removing clogging can be positively performed.

Note that the above is not limited to cooling only.
This also occurs during heating using the humidifier 20. That is, in order to humidify the water, water is supplied from outside the casing 1a to the water supply passage 21.
Humidified by supplying the water, but water remaining without humidification is finally led to the drain pan 30. As in the case of cooling described above, humidification also requires
When the drainage member 32 is clogged, the remaining water without being humidified is guided to the drain pan 30, as shown in FIG.
When the water level in the drain pan 30 rises and the water stored in the drain pan 30 by the detection member 34 exceeds a certain value, the control device 100 controls the on-off valve 22 provided in the middle of the water supply passage 21.
Is closed, the supply of water from the water supply passage 21 is stopped, and the water is not supplied to the humidifier 20 to prevent the water stored in the drain pan 30 from overflowing from the drain pan 30.

Further, when the water stored in the drain pan 30 by the detecting member 34 exceeds a certain value, the control device 100 activates the abnormality evoking means 101 so that the abnormality is evoked by a sound or a lamp. It has become.

Therefore, according to the control method of the air conditioner, the detecting member 34 for detecting whether the water stored in the drain pan 30 has exceeded a certain value allows the water stored in the drain pan 30 to have a certain value. Above, the water stored in the drain pan 30 is prevented from overflowing from the drain pan 30 by not supplying water to the humidifier 20, and the floor, the ceiling, etc. can be prevented from getting wet. Further, when the water in the drain pan 30 exceeds a certain value by the detecting member 34, the abnormality is notified by a sound, a lamp, or the like, and the abnormality is aroused. Therefore, the clogging of the drainage member 32 is removed. Cleaning work can be actively performed.

[0026]

According to the control method of the air conditioner of the present invention, the water stored in the drain pan is kept constant by the detecting member for detecting whether the water stored in the drain pan has exceeded a predetermined value. Exceeding the value, the low temperature fluid is not guided into the heat exchanger pipe, the amount of water condensed on the outer surface of the indoor heat exchanger is reduced, and the water stored in the drain pan does not overflow from the drain pan To prevent the floor, ceiling, etc. from getting wet.

According to the control method of the air conditioner of the second aspect, the water stored in the drain pan is detected by the detecting member for detecting whether the water stored in the drain pan exceeds a predetermined value. If the water in the drain pan exceeds a certain value by a detecting member that detects whether or not the value exceeds a certain value, the abnormal condition is sounded by a sound or a lamp, etc. Cleaning operation to stop the operation of the machine, prevent the water stored in the drain pan from overflowing from the drain pan, prevent the floor, ceiling, etc. from getting wet, and remove clogging of drainage members Can also be actively performed.

According to the control method of the air conditioner of the third aspect, the water stored in the drain pan is kept constant by the detecting member for detecting whether the water stored in the drain pan exceeds a predetermined value. Exceeding the value, the low temperature fluid is not guided into the heat exchanger pipe, the amount of water condensed on the outer surface of the indoor heat exchanger is reduced, and the water stored in the drain pan does not overflow from the drain pan To prevent the floor,
It is possible to prevent the ceiling etc. from getting wet, and if the water in the drain pan exceeds a certain value by the detection member, it is notified by a sound, a lamp, etc., to alert the user of the abnormality. Therefore, the cleaning operation for removing the clogging of the drainage member can be positively performed.

According to the control method of the air conditioner of the fourth aspect, the water stored in the drain pan can be kept constant by the detecting member for detecting whether the water stored in the drain pan exceeds a predetermined value. When the value exceeds the value, water is not supplied to the humidifier, the water stored in the drain pan is prevented from overflowing from the drain pan, and the floor, the ceiling and the like can be prevented from getting wet.

According to the control method of the air conditioner of the fifth aspect, the water stored in the drain pan is detected by the detecting member for detecting whether the water stored in the drain pan exceeds a predetermined value. If it exceeds a certain value, it will be notified by a sound, a lamp, etc. that it is abnormal, and it will evoke the abnormality, so stop the operation of the air conditioner,
Water stored in the drain pan can be prevented from overflowing the drain pan to prevent the floor, ceiling, etc. from getting wet, and cleaning work to remove clogging of drainage members can be actively performed. it can.

According to the control method of the air conditioner of the present invention, the water stored in the drain pan is kept constant by the detecting member for detecting whether the water stored in the drain pan has exceeded a predetermined value. Exceeding the value, it is possible to prevent water from being supplied to the humidifier, prevent the water stored in the drain pan from overflowing from the drain pan, and prevent the floor, ceiling, etc. from getting wet. When the water in the drain pan exceeds a certain value by the detection member, the abnormality is notified by a sound, a lamp, etc., and the abnormality is aroused. Can be actively performed.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing a state in which an air conditioner for implementing a method of controlling an air conditioner according to an embodiment of the present invention is mounted inside a ceiling.

FIG. 2 is a schematic side sectional view of the air conditioner of FIG. 1;

FIG. 3 is a schematic sectional view taken along line AA of FIG. 2;

FIG. 4 is a schematic perspective view of the humidifier of FIG. 1;

FIG. 5 is a schematic explanatory diagram for schematically explaining a control relationship for implementing the control method of the air conditioner of FIG. 1; water stored in a drain pan exceeds a certain value; FIG. 7 is a schematic explanatory diagram of a normal state where there is not.

FIG. 6 is a schematic explanatory diagram for schematically explaining a control relationship for implementing the control method of the air conditioner of FIG. 1, wherein water stored in a drain pan exceeds a certain value; It is a schematic explanatory view of the abnormal state which occurred.

[Explanation of symbols]

 1a Casing 10 Indoor heat exchanger 30 Drain pan 32 Drainage member 34 Detection member

Claims (6)

[Claims] An indoor heat exchanger having a casing, a heat exchanger pipe provided in the casing and guiding a low-temperature fluid, and condensed on an outer surface of the indoor heat exchanger. A drain pan provided below the indoor heat exchanger and provided with a drain port for receiving the water dripped, and connected to the drain port of the drain pan to remove water in the drain pan outside the casing. A drain member for guiding to the drain pan, and a detection member for detecting whether or not the water stored in the drain pan has exceeded a certain value, and when the water stored in the drain pan by the detection member exceeds a certain value, By preventing the low-temperature fluid from being guided into the heat exchanger pipe, the amount of water condensed on the outer surface of the indoor heat exchanger is reduced, and the water stored in the drain pan overflows from the drain pan. To prevent Control method of an air conditioner which is characterized and. 2. An indoor heat exchanger having a casing, a heat exchanger pipe provided in the casing and guiding a low-temperature fluid, and condensed on an outer surface of the indoor heat exchanger. A drain pan provided below the indoor heat exchanger and provided with a drain port for receiving the water dripped, and connected to the drain port of the drain pan to remove water in the drain pan outside the casing. A drain member for guiding to the drain pan, and a detection member for detecting whether or not the water stored in the drain pan has exceeded a certain value, and when the water stored in the drain pan by the detection member exceeds a certain value, A method for controlling an air conditioner, wherein the abnormality is notified by a sound, a lamp, or the like. 3. An indoor heat exchanger having a casing, a heat exchanger pipe provided in the casing and guiding a low-temperature fluid, and condensed on an outer surface of the indoor heat exchanger. A drain pan provided below the indoor heat exchanger and provided with a drain port for receiving the water dripped, and connected to the drain port of the drain pan to remove water in the drain pan outside the casing. A drain member for guiding to the drain pan, and a detection member for detecting whether or not the water stored in the drain pan has exceeded a certain value, and when the water stored in the drain pan by the detection member exceeds a certain value, By preventing the low-temperature fluid from being guided into the heat exchanger pipe, the amount of water condensed on the outer surface of the indoor heat exchanger is reduced, and the water stored in the drain pan overflows from the drain pan. To prevent Sound that are both abnormal, the control method of the air conditioner which is characterized in that to inform the lamp. 4. A casing, an indoor heat exchanger and a humidifier provided in the casing, and water condensed and dropped on the outer surface of the indoor heat exchanger and the humidifier. A drain pan provided below the indoor heat exchanger and the humidifier and provided with a drain port to receive water remaining without being humidified, and a drain pan connected to the drain port of the drain pan to remove water in the drain pan. A drainage member for guiding outside of the casing; and a detection member for detecting whether or not water stored in the drain pan has exceeded a predetermined value. Water supplied to the humidifier passes through a water supply passage. When the water stored in the drain pan by the detection member exceeds a certain value, the water stored in the drain pan overflows from the drain pan so as not to supply water to the humidifier. Prevent Control method of an air conditioner, characterized in that. 5. A casing, an indoor heat exchanger and a humidifier provided in the casing, water condensed and dropped on an outer surface of the indoor heat exchanger, and the humidifier. A drain pan provided below the indoor heat exchanger and the humidifier and provided with a drain port to receive water remaining without being humidified, and a drain pan connected to the drain port of the drain pan to remove water in the drain pan. A drainage member for guiding outside of the casing; and a detection member for detecting whether or not water stored in the drain pan has exceeded a predetermined value. Water supplied to the humidifier passes through a water supply passage. The method of controlling an air conditioner, characterized in that when the water supplied via the detection member and stored in the drain pan by the detection member exceeds a certain value, the abnormality is notified by a sound, a lamp or the like. 6. A case, an indoor heat exchanger and a humidifier provided in the case, water condensed and dropped on the outer surface of the indoor heat exchanger and the humidifier. A drain pan provided below the indoor heat exchanger and the humidifier and provided with a drain port to receive water remaining without being humidified, and a drain pan connected to the drain port of the drain pan to remove water in the drain pan. A drainage member for guiding outside of the casing; and a detection member for detecting whether or not water stored in the drain pan has exceeded a predetermined value. Water supplied to the humidifier passes through a water supply passage. When the water stored in the drain pan by the detection member exceeds a certain value, the water stored in the drain pan overflows from the drain pan so as not to supply water to the humidifier. Prevent Sound that together is abnormal, the control method of an air conditioner which is characterized in that to inform the lamp.