JP2021135019A - Air conditioner, control method therefor, and control program therefor - Google Patents

Abstract

To provide an air conditioner, etc. that can prevent the inside of an installation room for an indoor unit from getting wet with water during a water discharge inspection for water housed in a drain pan.SOLUTION: An air conditioner 1 comprises: a case 11 comprising a suction port 11a and a discharge port 11b, and arranged in a computer room; indoor heat exchangers 12 and 13 arranged in the case 11; a drain pan 14 arranged in the case 11, and including a water housing part 36 for receiving water generated in the indoor heat exchangers 12 and 13; a water tank 32 to which water from a water pipe 41 is supplied; a water passage 34 for guiding water in the water tank 32 to the water housing part 36; a water valve 35 for adjusting water flowing from the inside of the water tank 32 to the water housing part 36; an operation part 76 capable of executing opening/closing operation of the water valve 35; and a control device 20 for controlling the water valve 35 so as to perform the opening/closing operation corresponding to a signal indicating the opening/closing operation of the water valve 35 from the operation part 76 on the basis of the signal.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to an air conditioner, a control method for the air conditioner, and a control program for the air conditioner.

Conventionally, as described in Patent Document 1, the indoor unit of an air conditioner is a heat exchanger arranged in a case and a drain pan arranged in the case and receiving condensed water generated and dropped by the heat exchanger. , And a drain pump for discharging the condensed water contained in the drain pan to the outside.

Japanese Patent No. 6614389

Various foreign substances such as organic substances, dust, and microorganisms are suspended in the indoor air of the indoor unit of the air conditioner, and these foreign substances sucked together with the air in the indoor unit accumulate in the indoor unit such as the drain pan and drain pump. Will be done. Furthermore, the inside of the indoor unit is humid, and the drain pan and the drain pump are kept wet with the drain water for a long time, and a muddy slime is formed on the surface of the drain pan due to the propagation of microorganisms. When foreign matter, slime, or the like accumulates and becomes large in size, the drainage portion of the drain pump or the like is likely to be clogged, and the drain water overflowing from the drain pan causes water leakage into the room. Further, even when the drain pump deteriorates over time and the pumping power of the drain pump is reduced, the drain water overflowing from the drain pan may cause water leakage into the room.

Therefore, it is necessary to regularly carry out tests to inspect the drainage performance of the condensed water contained in the drain pan. In this inspection, for example, a maintenance worker carries the water filled in the bucket to the vicinity of the air conditioner, and then uses a manual pump (oil pump (kerosene pump)) to move the water in the bucket to the drain pan and move it. It is executed by visually confirming the drainage operation of the water.

In this test method, when the bucket is moved or the water is moved using a manual pump, the water may splash or scatter and the room where the indoor unit is located gets wet with water, and the room may become dirty with the water. .. In particular, when the air conditioner is a stationary package air conditioner in which the indoor unit cools the information device (server, workstation, etc.) installed in the computer room or server room, water in the room causes the information device to malfunction. Not allowed because there is a risk of connection.

Therefore, an object of the present disclosure is to provide an air conditioner capable of preventing the indoor unit in which the indoor unit is installed from getting wet with water during a drainage inspection of the water contained in the drain pan, a control method thereof, and a control program thereof. To do.

In order to solve the above problems, the air conditioner according to the present disclosure has a suction port and an air outlet, and is arranged in a case, a heat exchanger arranged in the case, and the case. A drain pan including a water accommodating portion for receiving water generated by the heat exchanger, a water tank to which water is supplied from a water pipe, and a water passage for guiding the water in the water tank to the water accommodating portion. A water valve that adjusts the water flowing from the water tank to the water storage portion, an operation unit that can perform an opening / closing operation of the water valve, and an opening / closing of the water valve from the operation unit. A control device for controlling the water valve so as to perform the opening / closing operation corresponding to the signal based on the signal representing the operation is provided.

According to the present disclosure, water can be automatically supplied from the water pipe to the water tank, and further, when performing a drainage test, the water valve can be opened and closed by simply operating the operation unit. Water can be supplied to the drain pan from the water tank. Therefore, it is not necessary for a person to carry water using a bucket or the like, and it is not necessary to transfer water to a drain pan using a manual pump. Therefore, it is possible to prevent the indoor unit of the indoor unit from getting wet with water during the drainage inspection of the water contained in the drain pan.

Further, in the present disclosure, the control device includes a sensor for detecting that water has reached a predetermined water level in the water accommodating portion, and when the control device receives a signal from the sensor indicating that water has reached the predetermined water level, the control device receives a signal. The water valve may be controlled to close.

According to this configuration, when the water reaches the predetermined water level of the water storage part of the drain pan, the water is not supplied to the water storage part. Therefore, the water does not overflow from the water accommodating portion during the drainage inspection, and it is possible to prevent the water overflowing from the water accommodating portion from getting wet in the installation room of the indoor unit.

Further, in the present disclosure, the cleaning liquid tank for accommodating the cleaning liquid, the cleaning liquid passage for guiding the cleaning liquid in the cleaning liquid tank to the water accommodating portion, and the cleaning liquid flowing from the cleaning liquid tank to the water accommodating portion are referred to. A cleaning liquid valve to be adjusted is provided, the operation unit can open and close the cleaning liquid valve, and the control device is based on a signal from the operation unit indicating an opening and closing operation of the cleaning liquid valve. , The cleaning liquid valve may be controlled so as to perform the opening / closing operation corresponding to the signal.

According to this configuration, the cleaning liquid in the cleaning liquid tank can be supplied to the drain pan. Therefore, it is easy to dissolve and remove the drain pan and the foreign matter (slime, etc.) in the drainage path located downstream of the drain pan with the cleaning liquid. Further, after the cleaning liquid is supplied, the water from the water tank can be supplied to the drain pan, and in that case, the dissolved foreign matter can be efficiently discharged.

Further, in order to cool the information device, the case is installed in the room where the information device is installed, the suction port opening is provided on the upper end surface of the case, and the air outlet opening is provided. It may be provided on the bottom surface of the case.

As described above, a computer room or a server room is not allowed because if it gets wet with water, it may lead to a failure of an information device. Against this background, indoor units of air conditioners installed in rooms where information equipment is installed, for example, in computer rooms and server rooms, generally have a suction port opening in order to efficiently cool the information equipment. While provided on the top surface of the case, an outlet opening is provided on the bottom surface of the case.

According to this configuration, the room in which the information device is installed, for example, the computer room or the server room, does not get wet during the water drainage inspection. Therefore, the effect of preventing water from getting wet in the room becomes exceptional and remarkable.

Further, in the present disclosure, the water tank may be arranged horizontally adjacent to the upper side wall of the case.

According to this configuration, the opening of the suction port is located on the upper end surface of the case, and the water can be supplied from the water tank to the drain pan by its own weight. Therefore, the room in which the information device is installed is not wet with water, and the manufacturing cost can be suppressed.

Further, in the present disclosure, a second sensor for detecting whether or not a predetermined amount of water is contained in the water tank, and water supplied from the water pipe to the water tank are controlled and outside the room. A water supply control valve to be arranged is provided, and when the control device determines that a predetermined amount of water is not contained in the water tank based on a signal from the second sensor, the water supply control valve is opened. While controlling the degree to a predetermined opening degree that is not fully closed, when it is determined that a predetermined amount of water is contained in the water tank based on the signal from the second sensor, the opening degree of the water supply control valve is fully adjusted. It may be controlled to be closed.

According to this configuration, the water supplied to the water tank can be temporarily blocked outdoors. Therefore, even if the water pipe is damaged, it is possible to prevent the room from being flooded.

Further, the operation unit is a valve opening operation operation unit for setting the opening degree of the water valve to a predetermined opening degree which is not fully closed, and a valve closing operation operation unit for closing the opening degree of the water valve fully. It may include a part.

According to this configuration, a person can supply water to the drain pan by using the valve opening operation operation unit, and can stop the supply of water to the drain pan by using the valve closing operation operation unit. Therefore, for example, a person can easily perform a visual inspection of water drainage.

Further, in the present disclosure, the operation unit includes a test operation unit for executing a test as to whether or not the amount of drainage of water flowing into the water storage unit per unit time is equal to or more than a predetermined amount, and the amount of drainage is A notification unit for notifying that the amount is less than a predetermined amount is further provided, and when a test start operation using the test operation unit is performed, the control device adjusts the opening degree of the water valve to a predetermined opening degree that is not fully closed. When the test is controlled and the test is started and the water does not reach the predetermined water level before the predetermined time elapses after the test is started, when the predetermined time elapses after the test is started, the control device starts the test. When the test is completed by controlling the opening degree of the water valve to be fully closed, and the water reaches the predetermined water level before a predetermined time elapses from the start of the test, the control device causes the water. The opening degree of the valve may be controlled to be fully closed, and the control device may cause the notification unit to perform notification indicating that the amount of drainage is less than a predetermined amount.

According to this configuration, the drainage inspection of the water contained in the drain pan can be easily and accurately performed only by a person operating the test operation unit.

Further, in the present disclosure, the operation unit includes a test operation unit for executing a test as to whether or not the amount of drainage of water flowing into the water storage unit per unit time is equal to or more than a predetermined amount, and stores the cleaning liquid. A cleaning liquid tank, a cleaning liquid passage that guides the cleaning liquid in the cleaning liquid tank to the water storage portion, a cleaning liquid valve that adjusts the cleaning liquid that flows from the cleaning liquid tank to the water storage portion, and the drainage amount. Is further provided with a notification unit for notifying that the amount of water is less than a predetermined amount, and when a test start operation using the test operation unit is performed, the control device sets the opening degree of the cleaning liquid valve for a first predetermined time. When the test is started by controlling the opening to a predetermined opening that is not fully closed only during the period, a predetermined amount of the cleaning liquid flows into the water accommodating portion, and a second predetermined time elapses after the test is started, the control device However, the opening degree of the water valve is controlled to a predetermined opening degree that is not fully closed, water injection into the water accommodating portion is started, and the water is discharged before a third predetermined time elapses after the water injection is started. When the predetermined water level is not reached, when the third predetermined time elapses from the start of the water injection, the control device controls the opening degree of the water valve to be fully closed, and the test is completed, while the water injection is completed. When the water reaches the predetermined water level before the lapse of the third predetermined time after the start of the operation, the control device controls the opening degree of the water valve to be fully closed, and the control device controls the notification unit. May execute a notification indicating that the amount of drainage is less than a predetermined amount.

The drainage performance test is preferably performed after the cleaning solution has dissolved foreign matter such as slime in the drainage path. Further, it is preferable that the cleaning liquid is discharged together with the dissolved foreign matter and the water in the water tank after the foreign matter such as slime is dissolved, that is, after a predetermined time after being supplied to the drain pan.

The predetermined time may be 0 or more, and the predetermined time includes 0 hours.

According to this configuration, the drainage inspection of water can be performed after the cleaning liquid dissolves at least a part of foreign substances such as slime in the drainage route, and after removing the foreign substances that can be easily removed, high quality drainage is performed. Can perform inspections. In addition to the water drainage inspection, the drain pan and the drainage path downstream of the drain pan can also be washed with the cleaning liquid. Therefore, maintenance of the air conditioner can also be performed.

Further, in the present disclosure, the notification unit includes a display unit, and while the test is being executed, the display unit makes a display indicating that the test is being executed, and the test is started. If the water does not reach the predetermined water level until the test is completed, the display unit displays that the drainage performance of the water contained in the drain pan is normal, while the display unit displays the above. When the water reaches the predetermined water level during the test, the display unit may display that the amount of drainage is less than the predetermined amount.

According to this configuration, it is possible to surely know that a person is in the middle of a drainage test and that the drainage performance is normal, and it is possible to give a sense of security to the person. In addition, a person can recognize that the amount of drainage is less than a predetermined amount, and in that case, it is possible to recognize that measures such as cleaning are necessary.

Further, in the present disclosure, the notification unit may include a display unit, and the operation unit and the display unit may be provided on a remote controller for performing air conditioning control.

According to this configuration, there is no possibility that a person does not know the location of the operation unit, and the person can surely receive the notification regarding the drainage test.

Further, the control method of the air conditioner according to the present disclosure includes a drain pan including a water accommodating portion for receiving water generated by a heat exchanger, a water tank to which water is supplied from a water pipe, and a water tank in the water tank. A water passage that guides water to the water accommodating portion, a water valve that adjusts water flowing from the water tank to the water accommodating portion, and detection that water has reached a predetermined water level in the water accommodating portion. Sensor, a test operation unit for executing a test as to whether or not the amount of drainage of water flowing into the water storage unit per unit time is equal to or greater than a predetermined amount, and a notification that the amount of drainage is less than a predetermined amount. It is a control method of the water valve and the air conditioner that controls the notification unit using a computer that receives a signal from the test operation unit and a signal from the sensor in the air conditioner including the notification unit. When the computer receives a signal indicating the start of the test from the test operation unit, the computer executes an opening control for controlling the opening degree of the water valve to a predetermined opening degree which is not fully closed. When the computer determines that the water has not reached the predetermined water level before the elapse of a predetermined time after the test is started based on the signal from the sensor, the computer determines that the test has not started. After the lapse of the predetermined time, the first fully closed control for controlling the opening degree of the water valve to be fully closed is executed, while the computer determines after the test is started based on the signal from the sensor. When it is determined that the water has reached the predetermined water level before the lapse of time, the computer controls the opening of the water valve to be fully closed, and the notification unit receives the predetermined amount of drainage. It includes a notification control for executing notification, which means that it is less than, and a second step for executing the notification.

According to the present disclosure, it is possible to easily and accurately perform a drainage inspection of water contained in a drain pan simply by operating a test operation unit.

Further, the control program of the air conditioner according to the present disclosure includes a drain pan including a water accommodating portion for receiving water generated by a heat exchanger, a water tank to which water is supplied from a water pipe, and a water tank in the water tank. A water passage that guides water to the water accommodating portion, a water valve that adjusts water flowing from the water tank to the water accommodating portion, and detection that water has reached a predetermined water level in the water accommodating portion. Sensor, a test operation unit for executing a test as to whether or not the amount of drainage of water flowing into the water storage unit per unit time is equal to or greater than a predetermined amount, and a notification that the amount of drainage is less than a predetermined amount. Air harmony that causes a computer that receives a signal from the test operation unit and a signal from the sensor in an air conditioner including the notification unit to control the water valve and control the notification unit. In the control program of the machine, the computer controls the opening control of controlling the opening degree of the water valve to a predetermined opening degree which is not fully closed when the computer receives a signal indicating the start of the test from the test operation unit. When the computer determines that the water has not reached the predetermined water level before the elapse of a predetermined time after the test is started based on the signal from the sensor, the test is started. After the predetermined time has elapsed, the computer is made to execute the first fully closed control for controlling the opening degree of the water valve to be fully closed, while the computer starts the test based on the signal from the sensor. When it is determined that the water has reached the predetermined water level before the elapse of a predetermined time, the second fully closed control for controlling the opening degree of the water valve to be fully closed and the drainage amount to the notification unit are a predetermined amount. The computer is made to execute the notification control for executing the notification meaning that the value is less than or equal to.

According to the present disclosure, it is possible to easily and accurately perform a drainage inspection of water contained in a drain pan simply by operating a test operation unit.

According to the air conditioner, the control method thereof, and the control program thereof according to the present disclosure, it is possible to prevent the installation room of the indoor unit from getting wet with water during the drainage inspection of the water contained in the drain pan.

It is a schematic block diagram which shows the outline of the computer room which installed the indoor unit of the air conditioner which concerns on one Embodiment of this invention. It is a schematic block diagram explaining the main configuration in the indoor unit of the said air conditioner. It is the refrigerant circuit diagram of the said air conditioner, and is the simplified refrigerant circuit diagram which illustrated only the main parts. It is a block diagram of the part related to the drainage performance test of the drain pan of the air conditioner. It is a flowchart which shows the processing procedure which a control device performs when the 1st test operation part of the said air conditioner is operated. It is a flowchart which shows the processing procedure which a control device performs when the 2nd test operation part of the said air conditioner is operated. It is a schematic block diagram which shows the outline of the computer room in which the indoor unit of the air conditioner of a modification is installed.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. When a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that a new embodiment is constructed by appropriately combining the characteristic portions thereof. Further, in the following examples, the same components are designated by the same reference numerals in the drawings, and duplicate description will be omitted. In addition, the plurality of drawings include schematic views, and the dimensional ratios such as length, width, and height of each member do not always match between different drawings. Further, among the components described below, the components not described in the independent claims indicating the highest level concept are arbitrary components and are not essential components. In addition, when the word "abbreviation" is used in this specification, it is used in the same meaning as the word "roughly speaking", and the requirement "abbreviation" is used if the person looks like "abbreviation". It is filled. For example, the requirement of a substantially circular shape is met if a person looks roughly circular.

FIG. 1 is a schematic configuration diagram showing an outline of a computer room (server room, arrangement room) 5 in which the indoor units 10 of the air conditioners 1 and 1 according to the embodiment of the present invention are installed. In FIG. 1, the movement of hot air is indicated by a solid arrow, and the movement of cold air is indicated by a dotted arrow. Further, in the following, the computer room 5 may be referred to as an installation room 5, or may be simply referred to as a room 5. As shown in FIG. 1, in the computer chamber 5, for example, a plurality of servers 3 are arranged side by side in one direction, and each server 3 dissipates heat generated by a built-in electronic component. The air conditioners 1 and 1 arranged in the computer chamber 5 cool the computer chamber 5, for example, keep the temperature in the computer chamber 5 at a constant temperature, and prevent the electronic components in the server 3 from being thermally deteriorated.

The computer chamber 5 has an above-floor chamber 5a and an underfloor chamber 5b, and the two above-floor and underfloor chambers 5a and 5b are separated by a mesh-like floor plate 6 having a plurality (many) through holes. The hot air generated by the heat released from each server 3 flows upward from the server 3 as shown by the arrow a, and then flows in the path indicated by the arrow b, and flows into the indoor unit 10 of the air conditioners 1 and 1. It is sucked into the indoor unit 10 from the suction port provided on the upper side of the indoor unit 10 and cooled in the indoor unit 10. The indoor unit 10 blows cold air from the air outlet provided on the lower side to the lower side in the direction indicated by the arrow c.

The cold air blown from the indoor unit 10 flows into the underfloor chamber 5b through the plurality of through holes provided around the lower side of the indoor unit 10 among the large number of through holes provided in the floor plate, and then the arrow. It flows in the direction indicated by d and collides with the bottom side of the server 3 through a plurality of through holes provided around the lower side of each server 3 among a large number of through holes provided in the floor plate 6. The server 3 is cooled by the collision of the cold air.

Since a precision machine such as a server 3 is arranged in the computer chamber 5, the computer chamber 5 is not allowed to get wet with water. Therefore, for example, a plurality of water leakage sensors (not shown) are stretched under each of the air conditioners 1 and 1, and the presence or absence of water leakage from the air conditioners 1 and 1 is constantly and strictly monitored. In the example shown in FIG. 1, the indoor units 10 of the two air conditioners 1 and 1 having the same structure are installed in the computer chamber 5, but the indoor unit of the air conditioner is based on the scale of the computer room. Needless to say, the number of installed units fluctuates. The cooling operation by the indoor unit 10 will be described in detail later.

FIG. 2 is a schematic configuration diagram illustrating a main configuration of the indoor unit 10 of the air conditioner 1. The internal configuration of the indoor unit 10 is invisible and must be shown by a dotted line, but is shown by a solid line for easy understanding. The air conditioner 1 is a so-called floor-standing package air conditioner. As shown in FIG. 2, the indoor unit 10 includes a main body 15, a water supply device 30, and a cleaning liquid supply device 60. Further, the main body 15 includes a box-shaped case 11 mounted on the floor plate 6, indoor heat exchangers 12 and 13, a drain pan 14, a blower 17, a first sensor 19, and a control device 20. The case 11 has a suction port 11a on the top plate and an air outlet 11b on the bottom plate. The drain pan 14 receives the dew condensation water generated and dropped by the indoor heat exchangers 12 and 13 by the cooling operation described below.

The blower 17 is arranged at a position facing the air outlet 11b in the case 11, and the air sucked from the suction port 11a is blown out from the air outlet 11b via the indoor heat exchangers 12 and 13. Further, the first sensor 19 detects whether or not the water level of the water accumulated in the water storage portion 36 of the drain pan 14 has reached a predetermined water level, and determines whether or not the water level of the water has reached a predetermined water level. A signal including possible information is output to the control device 20. The first sensor 19 may be composed of any sensor capable of detecting the water level, and may be composed of, for example, a water pressure type water level gauge, a light wave type water level gauge, a float type water level gauge, a capacitance type water level gauge, or the like. can. The control executed by the control device 20 will be described in detail later.

Next, the cooling operation of the air conditioner 1 will be briefly described. As shown in FIG. 1, the air conditioner 1 includes an outdoor unit 25 outside the computer chamber 5, and the outdoor unit 25 has one or more compressors, one or more outdoor heat exchangers, an expansion valve, and the like. .. FIG. 3 is a refrigerant circuit diagram of the air conditioner 1, and is a simplified refrigerant circuit diagram showing only the main parts. When performing the cooling operation, the compressor 21 of the outdoor unit 25 receives a signal from the control device 20 and drives the compressor 21 to discharge the gas refrigerant. The gas refrigerant discharged from the compressor 21 reaches the outdoor heat exchanger 22 of the outdoor unit 25.

Since the temperature of the refrigerant is high, the refrigerant is cooled by the outdoor heat exchanger 22 even in the extremely hot summer air (air of 30 to 40 degrees), and the gas refrigerant takes heat from the outdoor heat exchanger 22. It becomes a liquid refrigerant. This liquid refrigerant passes through the expansion valve 23. The liquid refrigerant passes through the expansion valve 23 to become a mist-like low-temperature liquid refrigerant, and then flows into the indoor heat exchangers 12 and 13. The atomized, low-temperature liquid refrigerant that has flowed into the indoor heat exchangers 12 and 13 draws heat from the indoor heat exchangers 12 and 13 to cool the air in the computer chamber 5, while the indoor heat exchangers 12 and 13 It is given heat and vaporized. In this way, the refrigerant removes heat from the indoor heat exchangers 12 and 13, while releasing heat to the outdoor heat exchanger 22 cools the interior of the computer chamber 5. The vaporized gas refrigerant flows from the indoor heat exchangers 12 and 13 into the suction port of the compressor 21. In the cooling operation, this series of operations is repeated.

Again, with reference to FIG. 2, the water supply device 30 includes a water tank 32, a water passage 34, a water valve 35, a second sensor 37, and a water supply control valve 39. The water tank 32 is a container capable of accommodating water, and is fixed to the upper side of the side wall portion on one side in the width direction of the box-shaped case 11 by using mounting means, for example, a fastening member, welding, an adhesive, or the like. NS. The water passage 34 extends downward from the water tank 32 to the drain pan 14 side, and guides the water in the water tank 32 to the water storage portion 36 of the drain pan 14.

The water passage 34 has two first and second water passages 34a and 34b, and the water valve 35 connects the first water passage 34a and the second water passage 34b. Specifically, the first water passage portion 34a connects the water tank 32 and the water valve 35. Further, the upper end portion of the second water passage portion 34b is connected to the water valve 35, and the second water passage portion 34b guides the water from the water valve 35 to the water storage portion 36 of the drain pan 14. Therefore, when the water valve 35 is not in the fully closed state, the water in the water tank 32 passes through the first water passage portion 34a, the water valve 35, and the second water passage portion 34b. It flows into the water accommodating portion 36 of the drain pan 14. The amount of water flowing per unit time varies depending on the opening degree of the water valve 35.

Water from the water pipe 41 is supplied to the water passage 34. Further, a water supply control valve 39 is connected to the water pipe 41, and the amount of water supplied to the water tank 32 can be adjusted by controlling the opening degree of the water supply control valve 39. The water supply control valve 39 is arranged outside the computer chamber 5. Each of the water valve 35 and the water supply control valve 39 is composed of an electromagnetic valve and an electric valve whose opening degree is controlled by electricity, and the opening degree of each of the valves 35 and 39 is controlled by a control signal of the control device 20. It may be like this. Further, the second sensor 37 is installed in, for example, the water tank 32, detects whether or not the water has reached the predetermined water level in the water tank 32, and has the water level reached the predetermined water level. A signal including information that can determine whether or not the control device 20 is output. Like the first sensor 19, the second sensor 37 may be composed of any sensor capable of detecting the water level, for example, a water pressure type water level gauge, a light wave type water level gauge, a float type water level gauge, or a capacitance type water level. It can be composed of a meter or the like.

The air conditioner 1 further includes a cleaning liquid tank 62, a cleaning liquid passage 64, and a cleaning liquid valve 65. The cleaning liquid tank 62 is a container that can store the cleaning liquid, and is fixed to the upper side of the side wall portion on the other side in the width direction of the box-shaped case 11 by using mounting means, for example, a fastening member, welding, an adhesive, or the like. NS. The cleaning liquid tank 62 has a lid portion 62a at the upper portion, and the lid portion 62a is screwed into, for example, the main body 62b of the cleaning liquid tank 62. When a person rotates the lid portion 62a to one side, the lid portion 62a is removed from the main body 62b, and the cleaning liquid can be replenished in the cleaning liquid tank 62.

The cleaning liquid passage 64 extends downward from the cleaning liquid tank 62 to the drain pan 14 side, and guides the cleaning liquid in the cleaning liquid tank 62 to the water storage portion 36 of the drain pan 14. The cleaning liquid passage 64 has two first and second cleaning liquid passage portions 64a and 64b, and the cleaning liquid valve 65 connects the first cleaning liquid passage portion 64a and the second cleaning liquid passage portion 64b. Specifically, the first cleaning liquid passage portion 64a connects the cleaning liquid tank 62 and the cleaning liquid valve 65. Further, the upper end portion of the second cleaning liquid passage portion 64b is connected to the cleaning liquid valve 65, and the second cleaning liquid passage portion 64b guides the cleaning liquid from the cleaning liquid valve 65 to the water storage portion 36 of the drain pan 14.

Therefore, when the cleaning liquid valve 65 is not in the fully closed state, the cleaning liquid in the cleaning liquid tank 62 passes through the first cleaning liquid passage portion 64a, the cleaning liquid valve 65, and the second cleaning liquid passage portion 64b. It flows into the water accommodating portion 36 of the drain pan 14. The amount of flow of the cleaning liquid per unit time varies depending on the opening degree of the cleaning liquid valve 65. The cleaning liquid valve 65 is composed of an electromagnetic valve or an electric valve whose opening degree is controlled by electricity. The opening degree of the cleaning liquid valve 65 may be controlled by the control signal of the control device 20.

The air conditioner 1 further includes a drain pump 70 and a timer 71. In the drain pump 70, the tip 70a including the suction port is housed in the lower region inside the water storage 36, and when water reaches the tip 70a, the drain pump 70 sucks up the water and discharges it to the outside of the air conditioner 1 to discharge the water. Prevents the water from rising to a predetermined water level in the water accommodating portion 36. Further, the timer 71 starts timing when it receives a signal indicating the start of timing from the control device 20, and outputs time information from the start of timing to the control device 20.

The air conditioner of the present disclosure does not have to be provided with a drain pump. In this case, for example, an inclined portion may be provided on the bottom surface of the water accommodating portion so that water can be collected in a predetermined area of the water accommodating portion. It may have a pipe extending to the outside. This pipe extends so that the height of the installation position gradually decreases as the distance from the water storage portion increases. In this way, the water in the drain pan can be smoothly flowed to the outside of the air conditioner without using a drain pump.

Next, the control performed by the control device 20 at the time of the drainage performance test of the drain pan 14 will be described with reference to FIGS. 4 to 6. FIG. 4 is a block diagram of a portion related to the drainage performance test of the drain pan 14. With reference to FIG. 4, the control device 20 is suitably configured by a computer, for example, a microcomputer, and includes a control unit 73 and a storage unit 74. The control unit 73, that is, the processor includes, for example, a CPU (Central Processing Unit). The storage unit 74 is composed of a hard disk drive (HDD), a semiconductor memory, or the like, and the semiconductor memory is a non-volatile memory such as a ROM (Read Only Memory) or a volatile memory such as a RAM (Random Access Memory). It is composed. The storage unit 74 may be composed of only one storage medium, or may be composed of a plurality of different storage media. The CPU reads and executes a program or the like stored in advance in the storage unit 74. Further, the non-volatile memory stores a control program, a predetermined threshold value, and the like in advance. In addition, the volatile memory temporarily stores the read program and processing data.

As shown in FIGS. 2 and 4, the air conditioner 1 includes a remote controller (hereinafter, simply referred to as a remote controller) 75, and the remote controller 75 includes an operation unit 76 and a display unit 77 as an example of a notification unit. The operation unit 76 is composed of a touch panel, a plurality of push buttons, and the like, and the display unit 77 is composed of a liquid crystal panel, an organic EL panel, and the like. The remote controller 75 is adapted to perform two-way wireless communication with the control device 20. As the wireless communication, for example, infrared communication, wireless communication using a Bluetooth (registered trademark) standard, or the like can be adopted. The operation unit 76 includes a water valve opening operation unit 81, a water valve closing operation unit 82, a cleaning liquid valve opening operation unit 83, a cleaning liquid valve closing operation unit 84, a first test operation unit 85, and a first. 2 Includes a test operation unit 86.

When a person operates the water valve opening operation unit 81, the control unit 73 that receives the signal from the water valve opening operation unit 81 operates the water valve opening operation unit 81 stored in the storage unit 74. With reference to the control program at the time, the water valve 35 is controlled so that the opening degree of the water valve 35 becomes a predetermined opening degree other than the fully closed opening (for example, the fully opened opening degree). Further, when a person operates the water valve closing operation operation unit 82, the control unit 73 that receives the signal from the water valve closing operation operation unit 82 is stored in the storage unit 74, and the water valve closing operation operation unit 82 is stored. The water valve 35 is controlled so that the opening degree of the water valve 35 becomes 0 (fully closed state) with reference to the control program at the time of operation.

Further, when a person operates the cleaning liquid valve opening operation operation unit 83, the control unit 73 that receives the signal from the cleaning liquid valve opening operation unit 83 is stored in the storage unit 74, and the cleaning liquid valve opening operation unit 83 is stored in the storage unit 74. With reference to the control program at the time of operation, the cleaning liquid valve 65 is controlled so that the opening degree of the cleaning liquid valve 65 becomes a predetermined opening degree other than fully closed (for example, the fully opened opening degree). Further, when a person operates the cleaning liquid valve closing operation operation unit 84, the control unit 73 that receives the signal from the cleaning liquid valve closing operation unit 84 causes the cleaning liquid valve closing operation operation unit 84 stored in the storage unit 74 to operate. The cleaning liquid valve 65 is controlled so that the opening degree of the cleaning liquid valve 65 becomes 0 (fully closed state) with reference to the control program at the time of operation.

Further, when a person operates the first test operation unit 85, the control unit 73 that receives the signal from the first test operation unit 85 operates the first test operation unit 85 stored in the storage unit 74. With reference to the control program at the time, information on the water level of the water accommodating unit 36 is acquired from the first sensor 19, bidirectional communication is performed with the timer 71, and the water valve 35 and the display unit 77 are further controlled. .. Specific control when the first test operation unit 85 is operated will be described in detail with reference to FIG.

Further, when a person operates the second test operation unit 86, the control unit 73 that receives the signal from the second test operation unit 86 operates the second test operation unit 86 stored in the storage unit 74. With reference to the control program at the time, information on the water level of the water storage unit 36 is acquired from the first sensor 19, and bidirectional communication is performed with the timer 71. Further, the water valve 35, the cleaning liquid valve 65, and the display The unit 77 is controlled. The specific control when the second test operation unit 86 is operated will be described in detail next with reference to FIG.

Further, when the control device 20 recognizes that the water level of the water tank 32 is lower than the predetermined water level based on the signal received from the second sensor 37, the control device 20 controls the water supply control valve 39 to be fully open for water use. While supplying tap water to the tank 32, when it is recognized that the water level of the water tank 32 has reached a predetermined water level or higher, the water supply control valve 39 is controlled to be fully closed and the supply of tap water to the water tank 32 is stopped. do. This makes it possible to prevent the water tank 32 from running out of water. By providing the water supply control valve 39 outside the computer chamber 5, the inflow of water into the water tank 32 can be temporarily stopped outside the computer chamber 5. Therefore, it is possible to prevent the computer chamber 5 from being flooded due to damage to the water pipe 41 or the like.

Next, the control executed by the control device 20 when the first test operation unit 85 is operated will be described. FIG. 5 is a flowchart showing a processing procedure performed by the control device 20 when the first test operation unit 85 is operated. With reference to FIG. 5, when a person operates the first test operation unit 85, the control is started, and in step S1, the control device 20 has a predetermined opening degree in which the opening degree of the water valve 35 is not fully closed. The water valve 35 is controlled so as to be the same, and subsequently, in step S2, the display unit 77 is made to display a word meaning that the test is being executed, for example, a word such as “drainage test in progress”.

In step S3 after step S2, the control device 20 determines whether or not the water level in the water accommodating portion 36 of the drain pan 14 has reached a predetermined water level based on the signal from the first sensor 19. If an affirmative determination is made in step S3, the process proceeds to step S4, the control device 20 controls the water valve 35 so that the opening degree of the water valve 35 becomes 0 (fully closed), and then step S5. The display unit 77 displays a word meaning that the amount of drainage is less than a predetermined amount, for example, a word such as "the drainage performance is not normal." After that, the control ends.

On the other hand, if a negative determination is made in step S3, the process proceeds to step S6, and the control device 20 determines whether or not a predetermined time has elapsed from the start of the test based on the signal from the timer 71. If a negative determination is made in step S6, steps S3 and subsequent steps are repeated. On the other hand, if an affirmative determination is made in step S6, the process proceeds to step S7, and the control device 20 controls the water valve 35 so that the opening degree of the water valve 35 becomes 0 (fully closed). The process proceeds to step S8, and the display unit 77 displays a word indicating that the drainage performance is normal, for example, a wording such as "the drainage performance is normal." After that, the control ends.

Subsequently, the control executed by the control device 20 when the second test operation unit 86 is operated will be described. FIG. 6 is a flowchart showing a processing procedure performed by the control device 20 when the second test operation unit 86 is operated. With reference to FIG. 6, when a person operates the second test operation unit 86, the control is started, and in step S11, the control device 20 does not fully close the opening of the cleaning liquid valve 65 for the first predetermined time. The cleaning liquid valve 65 is controlled so as to have a predetermined opening degree, and then, in step S12, a wording indicating that the test is being executed, for example, a wording such as "drainage test in progress" is given to the display unit 77. Display it.

After that, in step S13, the control device 20 determines whether or not a second predetermined time has elapsed after the opening degree of the cleaning liquid valve 65 reaches a predetermined opening degree that is not fully closed, based on the information from the timer 71. If a negative determination is made in step S13, step S13 is repeated. On the other hand, if an affirmative determination is made in step S13, the process proceeds to step S14, and the control device 20 controls the water valve 35 so that the opening degree of the water valve 35 is a predetermined opening degree that is not fully closed.

In step S15 after step S14, the control device 20 determines whether or not the water level in the water accommodating portion 36 of the drain pan 14 has reached a predetermined water level based on the signal from the first sensor 19. If an affirmative determination is made in step S15, the process proceeds to step S16, the control device 20 controls the water valve 35 so that the opening degree of the water valve 35 becomes 0 (fully closed), and then step S17. The display unit 77 displays a word meaning that the amount of drainage is less than a predetermined amount, for example, a word such as "the drainage performance is not normal." After that, the control ends.

On the other hand, if a negative determination is made in step S15, the process proceeds to step S18, and whether or not a third predetermined time has elapsed since the opening degree of the water valve 35 of the water valve 35 became a predetermined opening degree that was not fully closed. Is determined. If a negative determination is made in step S18, step S15 and subsequent steps are repeated. On the other hand, if an affirmative determination is made in step S18, the process proceeds to step S19, and the control device 20 controls the water valve 35 so that the opening degree of the water valve 35 becomes 0 (fully closed). The process proceeds to step S20, and the display unit 77 displays a word indicating that the drainage performance is normal, for example, a wording such as "drainage performance is normal." After that, the control ends.

As described above, the air conditioner 1 according to the present disclosure has a suction port 11a and an outlet 11b, and has a case 11 arranged in the computer chamber (chamber) 5 and an indoor heat exchanger 12 arranged in the case 11. , 13 and a drain pan 14 which is arranged in the case 11 and includes a water accommodating portion 36 which receives water generated by the indoor heat exchangers 12 and 13. Further, the air conditioner 1 is provided from the water tank 32 to which the water from the water pipe 41 is supplied, the water passage 34 that guides the water in the water tank 32 to the water accommodating portion 36, and the water tank 32. Based on the water valve 35 that adjusts the water flowing in the water storage unit 36, the operation unit 76 that can execute the opening / closing operation of the water valve 35, and the signal representing the opening / closing operation of the water valve 35 from the operation unit 76. A control device 20 that controls the water valve 35 so as to perform an opening / closing operation corresponding to the signal is provided.

According to the present disclosure, water can be automatically supplied from the water pipe 41 to the water tank 32, and further, when performing a drainage test, the water valve 35 is opened and closed only by a person operating the operation unit 76. It is possible to supply water from the water tank 32 to the drain pan 14. Therefore, it is not necessary for a person to carry the water using a bucket or the like, and it is not necessary to transfer the water to the drain pan 14 using a manual pump. Therefore, it is possible to prevent the inside of the installation room 5 of the indoor unit 10 from getting wet with water during the drainage inspection of the water contained in the drain pan 14.

Further, the air conditioner 1 includes a first sensor 19 that detects that the water has reached the predetermined water level of the water accommodating portion 36, and the control device 20 indicates that the water has reached the predetermined water level from the first sensor 19. Upon receiving the signal, the water valve 35 may be controlled to be closed.

According to this configuration, when the water reaches the predetermined water level of the water accommodating portion 36 of the drain pan 14, no further water is supplied to the water accommodating portion 36. Therefore, the water does not overflow from the water accommodating portion 36 during the drainage inspection, and the water overflowing from the water accommodating portion 36 can be prevented from getting wet in the installation chamber 5 of the indoor unit 10.

It should be noted that this configuration is preferably adopted, but may not be adopted, and the air conditioner does not have to have the first sensor. In this case, for example, a person may use an operation unit to introduce water into the water storage unit 36 of the drain pan 14 with the water valve 35 not fully closed for a predetermined time. Then, by visually observing the degree of decrease in water from the drain pan, the quality of the drain pan and the drainage performance in the downstream area thereof may be inspected.

Further, the air conditioner 1 flows from the cleaning liquid tank 62 for accommodating the cleaning liquid, the cleaning liquid passage 64 for guiding the cleaning liquid in the cleaning liquid tank 62 to the water accommodating portion 36, and the cleaning liquid tank 62 into the water accommodating portion 36. A cleaning liquid valve 65 for adjusting the cleaning liquid to be used may be provided. Then, the operation unit 76 can open and close the cleaning liquid valve 65, and the control device 20 opens and closes the operation corresponding to the signal based on the signal representing the opening and closing operation of the cleaning liquid valve 65 from the operation unit 76. The cleaning liquid valve 65 may be controlled so as to perform the above.

According to this configuration, the cleaning liquid in the cleaning liquid tank 62 can be supplied to the drain pan 14. Therefore, it is easy to dissolve and remove the drain pan 14 and the foreign matter (slime or the like) in the drainage path located downstream of the drain pan 14 with the cleaning liquid. Further, after supplying the cleaning liquid, the water from the water tank 32 can be supplied to the drain pan, and in that case, the dissolved foreign matter can be efficiently discharged. It is preferable that this configuration is adopted, but it may not be adopted, and the air conditioner does not have to be provided with a cleaning liquid tank.

Further, in the air conditioner 1, the case 11 may be installed in the computer room 5 in which the information device is installed in order to cool the information device. Further, the opening of the suction port 11a may be provided on the upper end surface of the case 11, while the opening of the air outlet 11b may be provided on the bottom surface of the case 11.

As described above, a computer room or a server room is not allowed because if it gets wet with water, it may lead to a failure of an information device. Against this background, indoor units of air conditioners installed in rooms where information equipment is installed, for example, in computer rooms and server rooms, generally have a suction port opening in order to efficiently cool the information equipment. While provided on the top surface of the case, an outlet opening is provided on the bottom surface of the case.

According to this configuration, the inside of the room 5 in which the information device is installed, for example, the computer room and the server room, does not get wet during the drainage inspection of the water contained in the drain pan 14. Therefore, the effect of preventing water from getting wet in the chamber 5 becomes exceptionally remarkable.

The indoor unit of the air conditioner of the present disclosure may be arranged in any room other than the computer room 5, and may be set in, for example, a showroom of a company or the inside of a passenger ship. Further, the suction port opening does not have to be provided on the upper end surface of the case, and may be provided at any place of the air conditioner, and the air outlet opening may be provided at any place of the air conditioner. It may be provided, for example, on the front surface of the case.

Further, as shown in FIG. 2, the water tank 32 may be arranged so as to be adjacent to the upper side wall of the case 11 in the horizontal direction.

According to this configuration, the opening of the suction port 11a is located on the upper end surface of the case, and it is possible to easily realize a configuration in which water is supplied from the water tank 32 to the drain pan 14 by its own weight. Therefore, the inside of the room 5 in which the information device is installed is not wet with water, and the manufacturing cost can be suppressed.

The water tank does not have to be arranged so as to be adjacent to the upper side wall of the case in the horizontal direction. For example, as described above, the opening of the suction port may be provided at a place other than the upper end surface of the case, but in that case, if the water tank is arranged above the upper surface of the main body of the air conditioner, it is compact and stylish. It is preferable to be able to configure an air conditioner. The water tank may be mounted on the mounting surface of the air conditioner, and when the water in the water tank is used, the water in the water tank is drained upward by using a pump. It may be configured to be sent to the water storage unit of. In that way, water may be reliably prevented from pouring from above if the water pipe is damaged.

Further, the air conditioner 1 controls the second sensor 37 that detects whether or not a predetermined amount of water is contained in the water tank 32, and the water supplied from the water pipe 41 to the water tank 32. A water supply control valve 39 arranged outside the room 5 is provided, and the control device 20 determines that the water tank 32 does not contain a predetermined amount of water based on the signal from the second sensor 37, and determines that the water supply is not contained. While controlling the opening degree of the control valve 39 to a predetermined opening degree that is not fully closed, when it is determined that the water tank 32 contains a predetermined amount of water based on the signal from the second sensor 37, the water supply control valve 39 The opening degree of may be controlled to be fully closed.

According to this configuration, the water supplied to the water tank 32 can be temporarily blocked outside the room 5. Therefore, even if the water pipe 41 is damaged, it is possible to prevent the inside of the chamber 5 from being flooded. Note that this configuration does not have to be adopted, and the flow of water supplied from the water pipe may be controlled only by the water valve located on the downstream side of the water tank 32.

Further, the operation unit 76 has a water valve opening operation operation unit 81 for making the opening degree of the water valve 35 not fully closed, and a water valve for making the opening degree of the water valve 35 fully closed. The closing operation operation unit 82 may be included.

According to this configuration, a person can supply water to the drain pan 14 by using the water valve opening operation operation unit 81, and can stop the supply of water to the drain pan 14 by using the water valve closing operation operation unit 82. Therefore, for example, a person can visually inject an appropriate amount of water into the drain pan 14 by using the operation units 81 and 82, and a visual drainage inspection of water can be easily performed.

Further, the operation unit 76 includes a first test operation unit 85 for executing a test as to whether or not the amount of drainage of water flowing into the water storage unit 36 per unit time is equal to or more than a predetermined amount, and the amount of drainage is a predetermined amount. When a test start operation using the first test operation unit 85 is further provided with a display unit (notification unit) 77 for notifying that the amount is less than, the control device 20 fully closes the opening degree of the water valve 35. The test may be started by controlling the opening to a predetermined degree. Then, when the water does not reach the predetermined water level of the water accommodating portion 36 before the predetermined time elapses from the start of the test, the control device 20 adjusts the opening degree of the water valve 35 after the predetermined time elapses from the start of the test. When the test is completed by controlling it to be fully closed, and the water reaches the predetermined water level of the water accommodating portion 36 before the elapse of a predetermined time from the start of the test, the control device 20 adjusts the opening degree of the water valve 35. It may be controlled to be fully closed, and the control device 20 may cause the display unit 77 to execute a notification indicating that the amount of drainage is less than a predetermined amount.

According to this configuration, the drainage inspection of the water contained in the drain pan 14 can be easily and accurately performed only by a person operating the first test operation unit 85. In the above embodiment, when the notification unit includes the display unit 77 and the amount of drainage is less than the predetermined amount, the display unit 77 displays a wording meaning that the amount of drainage is less than the predetermined amount. .. However, when the amount of drainage is less than the predetermined amount, the display unit may give an image indicating that the amount of drainage is less than the predetermined amount, or the notification unit may not include the display unit. Further, in this case, if the water reaches the predetermined water level of the water storage unit 36 before the lapse of a predetermined time from the start of the test, the notification unit outputs a sound such as an alarm sound in addition to the notification by the display unit. By doing so, it may be notified that the water has reached the predetermined water level of the water accommodating portion 36 before the lapse of a predetermined time from the start of the test. Alternatively, when the water reaches the predetermined water level of the water storage unit 36 before the lapse of a predetermined time from the start of the test, the notification unit outputs a sound such as an alarm sound instead of the notification by the display unit for the test. It may be notified that the water has reached the predetermined water level of the water accommodating portion 36 before the elapse of a predetermined time after the start of. Further, the air conditioner does not have to have the first test operation unit.

Further, in the present disclosure, the operation unit 76 includes a second test operation unit 86 for executing a test as to whether or not the amount of drainage of water flowing into the water storage unit 36 per unit time is equal to or more than a predetermined amount. The air conditioner 1 has a cleaning liquid tank 62 that stores the cleaning liquid, a cleaning liquid passage 64 that guides the cleaning liquid in the cleaning liquid tank 62 to the water storage unit 36, and a cleaning liquid that flows from the cleaning liquid tank 62 to the water storage unit 36. A cleaning liquid valve 65 for adjusting the temperature and a display unit (an example of the notification unit) 77 for notifying that the amount of drainage is less than a predetermined amount may be further provided. Further, when the test start operation using the second test operation unit 86 is performed, the control device 20 controls the opening degree of the cleaning liquid valve 65 to a predetermined opening degree that is not fully closed only during the first predetermined time for the test. A predetermined amount of the cleaning liquid flows into the water accommodating portion 36 after the start of the test, and a second predetermined time elapses from the start of the test (the second predetermined time may be any time of 0 hours or more, for example, 1 hour, or Then, the control device 20 may control the opening degree of the water valve 35 to a predetermined opening degree that is not fully closed, and the water injection into the water accommodating portion 36 may be started. Then, when the water does not reach the predetermined water level of the water accommodating portion 36 before the lapse of the third predetermined time after the start of the water injection, the control device 20 sets the water valve 35 when the third predetermined time elapses after the start of the water injection. The test may be completed by controlling the opening degree of the valve to be fully closed. Further, when the water reaches the predetermined water level of the water accommodating portion 36 before the lapse of the third predetermined time after the start of the water injection, the control device 20 controls the opening degree of the water valve 35 to be fully closed for control. The device 20 may cause the display unit 77 to perform notification indicating that the amount of drainage is less than a predetermined amount.

The drainage performance test is preferably performed after the cleaning solution has dissolved foreign matter such as slime in the drainage path. Further, it is preferable that the cleaning liquid is discharged together with the dissolved foreign matter and the water in the water tank after the foreign matter such as slime is dissolved, that is, after a predetermined time after being supplied to the drain pan.

According to this configuration, the drainage inspection of water can be performed after the cleaning liquid dissolves at least a part of foreign substances such as slime in the drainage path, and after removing the foreign substances that can be easily removed, high quality drainage is performed. Can perform inspections. Further, in addition to the water drainage inspection, the drain pan 14 and the drainage path on the downstream side of the drain pan 14 can also be washed with the cleaning liquid. Therefore, maintenance of the air conditioner 1 can also be performed. The air conditioner does not have to have the second test operation unit.

Further, while the notification unit includes the display unit 77 and the test is being executed, the display unit 77 displays that the test is being executed, and from the start of the test to the end of the test. When the water does not reach the predetermined water level of the water storage unit 36, the display unit 77 displays that the drainage performance of the water stored in the drain pan 14 is normal, while the water is water during the test. When the predetermined water level of the accommodating unit 36 is reached, the display unit 77 may display that the amount of drainage is less than the predetermined amount.

According to this configuration, it is possible to surely know that a person is in the middle of a drainage test and that the drainage performance is normal, and it is possible to give a sense of security to the person. In addition, a person can recognize that the amount of drainage is less than a predetermined amount, and in that case, it is possible to recognize that measures such as cleaning are necessary.

Further, the notification unit may include the display unit 77, and the operation unit 76 and the display unit 77 may be provided on the remote controller 75 for performing air conditioning control.

According to this configuration, there is no possibility that a person does not know the location of the operation unit 76, and the person can surely receive the notification regarding the drainage test. The operation unit may not necessarily be provided on the remote control, may be provided on the outer surface of the case of the air conditioner, and the display unit may also be provided on the outer surface of the case. Further, the notification unit (display unit) does not have to exist.

Further, it is preferable to use the control method of the air conditioner 1 and the control program of the air conditioner that satisfy the following conditions. Specifically, the control method of the air conditioner 1 includes a drain pan 14 including a water accommodating portion 36 that receives water generated by the indoor heat exchangers 12 and 13, and a water tank 32 to which water is supplied from the water pipe 41. , A water passage 34 that guides the water in the water tank 32 to the water storage unit 36, a water valve 35 that adjusts the water flowing from the water tank 32 to the water storage unit 36, and a predetermined water storage unit 36. The first sensor 19 for detecting that the water has reached the water level, and the first test operation for executing a test as to whether or not the amount of drainage of the water flowing into the water storage unit 36 per unit time is equal to or more than a predetermined amount. Receives the signal from the first test operation unit 85 and the signal from the first sensor 19 in the air conditioner 1 including the unit 85 and the display unit (notification unit) 76 for notifying that the amount of drainage is less than a predetermined amount. This is a control method of the air conditioner 1 that controls the water valve 35 and the display unit 77 using a computer.

Further, in the control method of the air conditioner 1, when the computer receives a signal indicating the start of the test from the first test operation unit 85, the computer controls the opening degree of the water valve 35 to a predetermined opening degree which is not fully closed. When the computer determines that the water has not reached the predetermined water level within a predetermined time after the test is started based on the signal from the first sensor 19, the computer determines that the first step of executing the opening control is performed. After a lapse of a predetermined time from the start of the test, the first fully closed control for controlling the opening degree of the water valve 35 to be fully closed is executed, while the computer performs the test based on the signal from the first sensor 19. When it is determined that the water has reached the predetermined water level before the lapse of a predetermined time from the start, the computer controls the opening of the water valve 35 to be fully closed, and the display unit 77 shows the amount of drainage. It includes a notification control for executing notification, which means that the amount is less than a fixed amount, and a second step for executing the notification.

Further, the control program of the air conditioner 1 includes a drain pan 14 including a water accommodating portion 36 that receives water generated by the indoor heat exchangers 12 and 13, a water tank 32 to which water is supplied from the water pipe 41, and a water tank 32. A water passage 34 that guides the water in the water tank 32 to the water storage unit 36, a water valve 35 that adjusts the water flowing from the water tank 32 to the water storage unit 36, and a predetermined water level of the water storage unit 36. The first sensor 19 that detects that water has reached the water, and the first test operation unit for executing a test as to whether or not the amount of drainage of water flowing into the water storage unit 36 per unit time is equal to or greater than a predetermined amount. Receives a signal from the first test operation unit 85 and a signal from the first sensor 19 in the air conditioner 1 including the 85 and the display unit (notification unit) 77 for notifying that the amount of drainage is less than a predetermined amount. This is a control program for the air conditioner 1 that causes a computer to control the water valve 35 and the display unit 77.

Further, the control program of the air conditioner 1 controls the opening degree of the water valve 35 to a predetermined opening degree that is not fully closed when the computer receives a signal indicating the start of the test from the first test operation unit 85. When the computer is made to execute the open control and the computer determines that the water has not reached the predetermined water level of the water accommodating portion 36 within a predetermined time after the test is started based on the signal from the first sensor 19. The computer is made to execute the first fully closed control for controlling the opening degree of the water valve 35 to be fully closed after a predetermined time has elapsed from the start of the test, while the computer is based on the signal from the first sensor 19. When it is determined that the water has reached the predetermined water level before the lapse of a predetermined time from the start of the test, the second fully closed control for controlling the opening degree of the water valve 35 to be fully closed and the amount of drainage on the display unit 77 are displayed. The computer is made to execute the notification control for executing the notification which means that the amount is less than a predetermined amount.

As is clear from the description of the above-described embodiment, by using these methods and programs, a person can easily and accurately perform a drainage inspection of water contained in the drain pan 14 simply by operating the first test operation unit 85. can.

The present disclosure is not limited to the above-described embodiment and its modifications, and various improvements and changes can be made within the scope of the claims of the present application and the equivalent scope thereof. For example, in the above embodiment, the water passage 34 and the cleaning liquid passage 64 are different passages from each other, but the water passage and the cleaning liquid passage may be connected on the downstream side to form one passage portion.

Further, in the above embodiment, the case where the air conditioner 1 is an air-cooled package air conditioner has been described. However, the air conditioner may be a water-cooled packaged air conditioner. Specifically, it became hot as shown in FIG. 7, that is, a schematic configuration diagram showing an outline of the computer room (server room, installation room) 105 in which the indoor units 110 of the air conditioners 101 and 101 of the modified examples are installed. The liquid refrigerant may be cooled with water cooled by the cooling tower 140 by using a heat exchanger 130 composed of a water-cooled condenser (for example, a double-tube water-cooled condenser) or the like. Even in this case, by installing the water tank 32 in the air conditioner 101, the inside of the installation room 105 of the indoor unit 110 during the drainage inspection of the water contained in the drain pan, or in the computer room 5 in the case shown in FIG. However, it can be prevented from getting wet with water.

1,101 Air conditioner, 3 servers, 5,105 Computer room (server room, installation room), 10,110 Indoor unit, 11 cases, 11a suction port, 11b outlet, 12,13 Indoor heat exchanger, 14 drain pan , 19 1st sensor, 20 controller, 21 compressor, 22 outdoor heat exchanger, 23 expansion valve, 25 outdoor unit, 30 water supply device, 32 water tank, 34 water passage, 35 water valve, 36 drain pan water Containment unit, 37 2nd sensor, 39 Water supply control valve, 41 Water pipe, 60 Cleaning liquid supply device, 62 Cleaning liquid tank, 64 Cleaning liquid passage, 65 Cleaning liquid valve, 70 Drain pump, 71 Timer, 73 Control unit, 74 Storage unit , 75 remote control, 76 operation unit, 77 display unit, 81 water valve open operation operation unit, 82 water valve closing operation operation unit, 83 cleaning liquid valve open operation operation unit, 84 cleaning liquid valve closing operation operation unit, 85 1st test operation unit , 86 2nd test operation unit, 130 heat exchanger, 140 cooling tower.

Claims (13)

A case that has a suction port and an outlet and is placed indoors,
The heat exchanger arranged in the case and
A drain pan, which is arranged in the case and contains a water accommodating portion for receiving water generated by the heat exchanger,
A water tank to which water is supplied from the water pipe and
A water passage that guides the water in the water tank to the water storage unit, and
A water valve that regulates the water flowing from the water tank to the water storage unit,
An operation unit that can open and close the water valve,
A control device that controls the water valve so as to perform the opening / closing operation corresponding to the signal based on a signal representing the opening / closing operation of the water valve from the operation unit.
Equipped with an air conditioner. A sensor for detecting that water has reached a predetermined water level in the water storage unit is provided.
The air conditioner according to claim 1, wherein the control device controls to close the water valve when receiving a signal from the sensor indicating that water has reached the predetermined water level. A cleaning liquid tank that houses the cleaning liquid, and
A cleaning liquid passage that guides the cleaning liquid in the cleaning liquid tank to the water accommodating portion, and
A cleaning liquid valve for adjusting the cleaning liquid flowing from the inside of the cleaning liquid tank to the water accommodating portion is provided.
The operation unit can open and close the cleaning liquid valve.
The control device controls the cleaning liquid valve so as to perform the opening / closing operation corresponding to the signal based on the signal representing the opening / closing operation of the cleaning liquid valve from the operation unit, according to claim 1 or 2. The described air conditioner. In order to cool the information device, the case is installed in the room where the information device is installed.
The air conditioner according to any one of claims 1 to 3, wherein the suction port opening is provided on the upper end surface of the case, while the air outlet opening is provided on the bottom surface of the case. The air conditioner according to claim 4, wherein the water tank is arranged so as to be adjacent to the upper side wall of the case in the horizontal direction. A second sensor that detects whether or not a predetermined amount of water is contained in the water tank, and
A water supply control valve that controls the water supplied from the water pipe to the water tank and is arranged outside the room is provided.
When the control device determines that the water tank does not contain a predetermined amount of water based on the signal from the second sensor, the control device controls the opening degree of the water supply control valve to a predetermined opening degree which is not fully closed. On the other hand, if it is determined that a predetermined amount of water is contained in the water tank based on the signal from the second sensor, the opening degree of the water supply control valve is controlled to be fully closed, according to claim 4 or 5. The described air conditioner. The operation unit includes a valve opening operation operation unit for setting the opening degree of the water valve to a predetermined opening degree which is not fully closed, and a valve closing operation operation unit for closing the opening degree of the water valve fully. The air conditioner according to any one of claims 1 to 6, comprising the above. The operation unit includes a test operation unit for performing a test as to whether or not the amount of drainage of water flowing into the water storage unit per unit time is equal to or greater than a predetermined amount.
A notification unit for notifying that the amount of drainage is less than a predetermined amount is further provided.
When the test start operation using the test operation unit is performed, the control device controls the opening degree of the water valve to a predetermined opening degree which is not fully closed, and the test is started.
If the water does not reach the predetermined water level before the predetermined time elapses from the start of the test, the control device fully closes the opening degree of the water valve when the predetermined time elapses from the start of the test. When the water reaches the predetermined water level before a predetermined time elapses after the test is started while the test is completed, the control device fully closes the opening degree of the water valve. The air conditioner according to claim 2, wherein the control device causes the notification unit to perform notification indicating that the amount of drainage is less than a predetermined amount. The operation unit includes a test operation unit for performing a test as to whether or not the amount of drainage of water flowing into the water storage unit per unit time is equal to or greater than a predetermined amount.
A cleaning liquid tank that houses the cleaning liquid, and
A cleaning liquid passage that guides the cleaning liquid in the cleaning liquid tank to the water accommodating portion, and
A valve for cleaning liquid that adjusts the cleaning liquid that flows from the inside of the tank for cleaning liquid to the water accommodating portion, and a valve for cleaning liquid.
A notification unit for notifying that the amount of drainage is less than a predetermined amount is further provided.
When the test start operation using the test operation unit is performed, the control device controls the opening degree of the cleaning liquid valve to a predetermined opening degree that is not fully closed only for the first predetermined time, and the test is started. A predetermined amount of the cleaning liquid flows into the water accommodating portion.
When a second predetermined time has elapsed from the start of the test, the control device controls the opening degree of the water valve to a predetermined opening degree that is not fully closed, and water injection into the water accommodating portion is started.
If the water does not reach the predetermined water level before the lapse of the third predetermined time after the start of the water injection, the control device opens the water valve when the third predetermined time elapses after the start of the water injection. When the test is completed by controlling the degree to fully closed and the water reaches the predetermined water level before the lapse of the third predetermined time after the start of the water injection, the control device controls the water valve. The air conditioner according to claim 2, wherein the control device controls the opening degree of the above to fully close, and causes the notification unit to perform notification indicating that the amount of drainage is less than a predetermined amount. The notification unit includes a display unit and includes a display unit.
While the test is being performed, the display unit makes a display indicating that the test is being performed.
When the water does not reach the predetermined water level from the start of the test to the end of the test, the display unit indicates that the drainage performance of the water contained in the drain pan is normal. The air conditioner according to claim 8 or 9, wherein when the water reaches the predetermined water level during the test, the display unit displays that the amount of drainage is less than the predetermined amount. Machine. The notification unit includes a display unit and includes a display unit.
The air conditioner according to any one of claims 8 to 10, wherein the operation unit and the display unit are provided on a remote controller for performing air conditioning control. A drain pan including a water accommodating portion for receiving water generated by a heat exchanger, a water tank to which water is supplied from a water pipe, a water passage for guiding water in the water tank to the water accommodating portion, and the above. A water valve that adjusts the water flowing from the water tank to the water storage unit, a sensor that detects that water has reached a predetermined water level in the water storage unit, and a unit of water that has flowed into the water storage unit. The test operation in an air conditioner including a test operation unit for executing a test as to whether or not the amount of drainage per hour is equal to or more than a predetermined amount, and a notification unit for notifying that the amount of drainage is less than the predetermined amount. It is a control method of the water valve and the air conditioner that controls the notification unit using a computer that receives a signal from the unit and a signal from the sensor.
When the computer receives a signal indicating the start of the test from the test operation unit, the computer executes an open control for controlling the opening degree of the water valve to a predetermined opening degree which is not fully closed.
When the computer determines that the water has not reached the predetermined water level before the elapse of a predetermined time after the test is started based on the signal from the sensor, the computer determines that the water has not reached the predetermined water level. After a lapse of a predetermined time, the first fully closed control for controlling the opening degree of the water valve to be fully closed is executed, while the predetermined time after the computer starts the test based on the signal from the sensor. If it is determined that the water has reached the predetermined water level before the lapse of time, the computer controls the opening of the water valve to be fully closed, and the notification unit has the amount of drainage less than the predetermined amount. The second step of executing the notification control for executing the notification, which means that
Control methods for air conditioners, including. A drain pan including a water accommodating portion for receiving water generated by a heat exchanger, a water tank to which water is supplied from a water pipe, a water passage for guiding water in the water tank to the water accommodating portion, and the above. A water valve that adjusts the water flowing from the water tank to the water storage unit, a sensor that detects that water has reached a predetermined water level in the water storage unit, and a unit of water that has flowed into the water storage unit. The test operation in an air conditioner including a test operation unit for executing a test as to whether or not the amount of drainage per hour is equal to or more than a predetermined amount, and a notification unit for notifying that the amount of drainage is less than the predetermined amount. A control program for an air conditioner that causes a computer that receives a signal from a unit and a signal from the sensor to control the water valve and the notification unit.
When the computer receives a signal indicating the start of the test from the test operation unit, the computer is made to execute an open control for controlling the opening degree of the water valve to a predetermined opening degree which is not fully closed.
When the computer determines that the water has not reached the predetermined water level before the predetermined time elapses from the start of the test based on the signal from the sensor, the predetermined time after the start of the test. After a lapse of time, the computer is made to execute the first fully closed control for controlling the opening degree of the water valve to be fully closed, while the computer determines after the test is started based on the signal from the sensor. When it is determined that the water has reached the predetermined water level before the lapse of time, the second fully closed control for controlling the opening degree of the water valve to be fully closed and the amount of drainage to the notification unit are less than the predetermined amount. A control program for an air conditioner that causes the computer to execute a notification control that executes a notification that means.

Images