JP2010032094A - Drain discharge method, air conditioner, air conditioning system and drain socket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain discharge method capable of securely discharging drain generated in an air conditioner to a drain discharge treatment space, and to provide the air conditioner, an air conditioning system and a drain socket. <P>SOLUTION: The air conditioning system 1 is provided with a first indoor unit 4 having a first heat exchanger 51, a first drain pan 52 arranged below the first heat exchanger 51 to store drain and a first drain pump 53 for discharging the drain stored in the first drain pan 52; a second indoor unit 9 having a second heat exchanger 91 and a second drain pan 92 arranged below the second heat exchanger 91 to store drain; first piping 71 for guiding drain discharged from the second indoor unit 9 to the first drain pan 52 of the first indoor unit 4; and second piping 72 for guiding the drain stored in the first drain pan 52 to the drain discharge treatment space. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drain drainage method, an air conditioner, an air conditioner system, and a drain socket that are generated in an air conditioner disposed on a ceiling or the like of a building.

  In the air conditioner, air is cooled by the heat exchanger in accordance with the cooling operation of the air conditioner, and condensed water is generated. For this reason, in the ceiling cassette type air conditioner arranged on the ceiling surface of the room or the like, it is necessary to reliably discharge this condensed water from the back of the ceiling to the waste water treatment space.

Therefore, conventionally, a drain pan is disposed below the heat exchanger to collect the condensed water generated. And the dew condensation water (henceforth drain) collected with the drain pan is sucked up with a pump etc., and is discharged | emitted to the waste water treatment space through the drain piping connected to this pump.
JP-A-9-296938

  When the drain pipe is used as described above, in order to guide the drained water to the waste water treatment space along the back of the ceiling, for example, it is necessary to provide a downward slope of 1/100 or more in the drain pipe. However, it is difficult to always ensure a gradient in a narrow ceiling space. In addition, there are many restrictions on the drain piping, such as architectural concrete beams protruding into the ceiling space. For this reason, it is not possible to ensure a sufficiently similar gradient of the drain pipe, and drain clogging or contamination may occur in the drain pipe.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and is capable of reliably draining the drain generated by the air conditioning apparatus to the wastewater treatment space, the drainage draining method, the air conditioning apparatus, the air conditioning system, and the drain socket. The purpose is to provide.

  A drain drainage method according to a first aspect of the present invention is a drain drainage method of an air conditioning system including at least two indoor units of a first indoor unit and a second indoor unit, wherein the drain generated in the second indoor unit is the first. The pipe is led to the first indoor unit, and the drain is drained from the first indoor unit to the waste water treatment space through the second pipe.

  Here, the drain generated in the second indoor unit is guided to the first indoor unit, and the drain generated in the first indoor unit and the drain led to the first indoor unit are collectively discharged into the waste water treatment space. Yes.

  A plurality of second indoor units arranged on the upstream side in the drain discharge direction and a plurality of first indoor units arranged on the downstream side may be provided.

  Conventionally, when draining from an indoor unit using piping, for example, it is necessary to provide a descending gradient of 1/100 or more, and it is difficult to construct the piping well in a ceiling space where concrete beams or the like are present. For this reason, there is a case where the drain generated in the indoor unit cannot be guided to a predetermined waste water treatment space.

  Therefore, the drain drainage method of the present invention is an air conditioning system including at least two indoor units of the first indoor unit and the second indoor unit. The drain generated in the second indoor unit is discharged from the first indoor unit via the first pipe. The drain is drained from the first indoor unit to the waste water treatment space through the second pipe.

  Thereby, the distance of the 1st piping which discharges the drain which generate | occur | produces in a 2nd indoor unit can be shortened rather than leading directly to a waste water treatment space from a 2nd indoor unit. That is, if the distance of 1st piping becomes short, it will become possible to raise the freedom degree with respect to the construction for ensuring a predetermined drainage gradient.

  As a result, the drain generated by the indoor unit of the air conditioner can be reliably discharged to the outside.

  An indoor unit of an air conditioner according to a second invention is an indoor unit of an air conditioner in which a heat exchange part and a drain pump for discharging drain generated in the heat exchange part are housed in a casing. And a receiving portion that is provided in the casing and introduces the drain generated in the indoor unit of the other air conditioner into the casing.

  Here, the receiving part for introducing the drain generated in the indoor unit of another air conditioner into the casing is provided in the casing.

  Conventionally, when draining from an indoor unit using piping, for example, it is necessary to provide a descending gradient of 1/100 or more, and it is difficult to construct the piping well in a ceiling space where concrete beams or the like are present. For this reason, there is a case where the drain generated in the indoor unit cannot be guided to a predetermined waste water treatment space.

  Therefore, the indoor unit of the air conditioner of the present invention is provided with a receiving portion in the casing for introducing the drain generated in the indoor unit of the other air conditioner into the casing, and the drain generated in the other air conditioner is reduced. The air conditioner of the present invention can be introduced into the indoor unit.

  Thereby, compared to the case of laying the pipe from the indoor unit of the other air conditioner to the waste water treatment space, it is possible to shorten the laying distance of the pipe by guiding to the indoor unit in the air conditioner of the present invention. It becomes possible to raise the freedom degree with respect to construction for ensuring a predetermined drainage gradient.

  As a result, the drain generated in the indoor unit of the other air conditioner is guided to the indoor unit in the air conditioner of the present invention, so that the pipe is laid from the indoor unit of the other air conditioner to the waste water treatment space. Thus, the piping laying distance can be shortened. That is, if the distance of piping becomes short, it becomes possible to raise the freedom degree with respect to construction for ensuring a predetermined drainage gradient.

  As a result, the drain generated by the indoor unit of the air conditioner can be reliably discharged to the outside.

  An indoor unit of an air conditioner according to a third aspect of the invention is an indoor unit of an air conditioner according to the second aspect of the invention, wherein the receiving unit is configured to discharge drain generated in the indoor unit of another air conditioner. A drain socket for connecting to the incoming pipe is formed so that it can be attached.

  Thereby, it becomes possible to connect to the piping from which drain is discharged from other indoor units via the drain socket.

  An air conditioner indoor unit according to a fourth aspect of the present invention is the air conditioner indoor unit according to the second or third aspect of the present invention, wherein the receiving part is provided in the casing for discharging the drain to the outside of the casing. It is arrange | positioned vertically lower than the discharge part which is.

  An indoor unit of an air conditioner according to a fifth aspect of the present invention is the indoor unit of the air conditioner according to any one of the second to fourth aspects of the present invention, further comprising a humidifier that humidifies the conditioned air blown from the casing. The receiving part can also guide the drain generated in the humidifier into the casing.

  Here, both the drain generated in the humidifier and the drain generated in the indoor unit of the other air conditioner described above are introduced from the receiving unit.

  Thereby, even if it is an indoor unit of the air conditioning apparatus provided with the humidifier, it becomes possible to process the drain which generate | occur | produces in a humidifier, without providing the receiving part for humidifiers separately.

  The air conditioning system which concerns on 6th invention is provided with the 1st indoor unit, the 2nd indoor unit, 1st piping, and 2nd piping. The first indoor unit includes a first heat exchange unit, a first drain pan that is disposed below the first heat exchange unit and stores drainage, and a first drain pump that discharges the drain stored in the first drain pan. is doing. The second indoor unit includes a second heat exchange unit and a second drain pan that is disposed below the second heat exchange unit and stores the drain. The first pipe guides the drain discharged from the second indoor unit to the first drain pan of the first indoor unit. The second pipe guides the drain stored in the first drain pan to the waste water treatment space.

  Here, the drain generated in the second indoor unit is guided to the first indoor unit, and the drain generated in the first indoor unit and the drain led to the first indoor unit are collectively discharged into the waste water treatment space. Yes.

  A plurality of second indoor units arranged on the upstream side in the drain discharge direction and a plurality of first indoor units arranged on the downstream side may be provided.

  Conventionally, when draining from an indoor unit using piping, for example, it is necessary to provide a descending gradient of 1/100 or more, and it is difficult to construct the piping well in a ceiling space where concrete beams or the like are present. For this reason, there is a case where the drain generated in the indoor unit cannot be guided to a predetermined waste water treatment space.

  Therefore, the air conditioning system of the present invention guides the drain stored in the second drain pan to the first drain pan of the first indoor unit via the first pipe. Then, the drain led to the first indoor unit and the drain generated in the first heat exchange section are sucked up by the first drain pump from the first drain pan, and drained into the waste water treatment space through the second pipe. Is leading.

  Thereby, the distance of the 1st piping which discharges the drain which generate | occur | produces in a 2nd indoor unit can be shortened rather than leading directly to a waste water treatment space from a 2nd indoor unit. That is, if the distance of 1st piping becomes short, it will become possible to raise the freedom degree with respect to the construction for ensuring a predetermined drainage gradient.

  As a result, the drain generated by the indoor unit of the air conditioner can be reliably discharged to the outside.

  An air conditioning system according to a seventh aspect of the present invention is the air conditioning system according to the sixth aspect of the present invention, wherein the first indoor unit further includes a detection unit that detects a water level abnormality in the first drain pan.

  Here, for example, a float switch or the like is arranged to detect a water level abnormality in the first drain pan. Thereby, before the drain stored in the first drain pan overflows, for example, the operation of the second indoor unit is controlled, or the first drain pump in the first indoor unit is operated, etc. Is possible.

  An air conditioning system according to an eighth invention is the air conditioning system according to the sixth or seventh invention, wherein the first drain pump is based on the operating status of the second indoor unit or the detection result of the detection unit. The 1st control part which controls is further provided.

  Here, when the first indoor unit is not operating, the first drain pump may not operate. For this reason, if the first indoor unit is stopped when the drain is discharged from the second indoor unit, the drain may overflow from the first drain pan. Therefore, the present invention includes a first control unit that controls the first drain pump based on the operation status of the second indoor unit or the detection result of the detection unit. Accordingly, based on the operation status of the second indoor unit (for example, presence or absence of operation, operation type such as cooling / heating, strength of operation) or the detection result of the detection unit, the operation status of the first drain pump (operation Presence / absence, driving strength, etc.) can be controlled.

  An air conditioning system according to a ninth aspect is the air conditioning system according to the eighth aspect, wherein the first control unit operates the first drain pump when the detection unit detects a water level abnormality.

  As a result, the drain can be discharged before the drain overflows from the first drain pan.

  An air conditioning system according to a tenth invention is the air conditioning system according to the eighth invention, wherein the first control unit operates the first drain pump while the second indoor unit is performing the cooling operation. Let it be done.

  Thereby, it is possible to reliably prevent the drain discharged from the second indoor unit from the first drain pan from overflowing.

  An air conditioning system according to an eleventh aspect of the present invention is the air conditioning system according to the tenth aspect of the present invention, further comprising a first setting unit capable of setting the control content of the first control unit, and the control content is Whether the first drain pump is operated while the second indoor unit is performing the cooling operation.

Thereby, according to a situation, it becomes possible to set the said control content with respect to a 1st drain pump.

An air conditioning system according to a twelfth aspect of the invention is the air conditioning system according to the seventh aspect of the invention, further comprising a second control unit that controls the second indoor unit based on the detection result of the detection unit.

  Accordingly, before the drain stored in the first drain pan overflows, for example, it is possible to take measures such as stopping the operation of the second indoor unit.

  An air conditioning system according to a thirteenth aspect is the air conditioning system according to the twelfth aspect, wherein the second control unit stops the cooling operation of the second indoor unit when the detection unit detects a water level abnormality. Or when the 2nd drain pump which discharges the drain stored by the 2nd drain pan was installed in the 2nd indoor unit, the 2nd drain pump is stopped.

Thereby, the drain which flows into the 1st drain pan from the 2nd indoor unit can be stopped,
It is possible to reliably prevent the drain from overflowing from the first drain pan.

  An air conditioning system according to a fourteenth aspect of the present invention is the air conditioning system according to the thirteenth aspect of the present invention, further comprising a second setting unit capable of setting the control content of the second control unit, and the control content is When the detection unit detects a water level abnormality, whether or not to stop the cooling operation of the second indoor unit, or the second drain pump for discharging the drain stored in the second drain pan is installed in the second indoor unit. If this is the case, whether or not to stop the second drain pump.

  Thereby, according to a condition, it becomes possible to set the said control content with respect to a 2nd indoor unit or a 2nd drain pump.

  An air conditioning system according to a fifteenth aspect of the present invention is the air conditioning system according to any one of the sixth to fourteenth aspects of the invention, wherein the first pipe has an electromagnetic valve that adjusts the flow rate in the first pipe. The first control unit closes the solenoid valve when the detection unit detects a water level abnormality.

  Thereby, it is possible to reliably prevent the drain discharged from the first drain pan from the second indoor unit from overflowing.

  An air conditioning system according to a sixteenth invention is the air conditioning system according to any one of the sixth to fifteenth inventions, wherein the first indoor unit and the second indoor unit are arranged in the same refrigerant system. Has been.

  As a result, it is possible to easily realize control for interlocking the first indoor unit and the second indoor unit.

  An air conditioning system according to a seventeenth aspect of the invention is the air conditioning system according to any one of the sixth to sixteenth aspects of the invention, wherein the first pipe is a pressure relief part for reducing the pressure in the first pipe. have.

  Here, when the first indoor unit side is on the positive pressure side compared to the second indoor unit side, air or the like flows backward through the first pipe, and an air leak sound or the like is generated in the second indoor unit. Therefore, in the air conditioning system of the present invention, a pressure relief portion is provided in the first pipe, and here, the air that flows backward is released. Thereby, it is possible to prevent a leakage sound of air on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side through the first pipe.

  An air conditioning system according to an eighteenth aspect of the present invention is the air conditioning system according to the seventeenth aspect of the present invention, wherein the open end of the pressure relief portion faces downward in the vertical direction.

  Thereby, it becomes possible to prevent foreign matter from entering from the opening end of the pressure relief portion.

  An air conditioning system according to a nineteenth aspect of the present invention is the air conditioning system according to the seventeenth or eighteenth aspect of the present invention, wherein the opening end of the pressure relief part is covered with a net.

  Thereby, it becomes possible to more reliably prevent foreign matter from entering from the opening end of the pressure relief portion.

  An air conditioning system according to a twentieth aspect of the present invention is the air conditioning system according to any one of the sixth to sixteenth aspects of the present invention, wherein the first pipe stores a drain by bending a part of the first pipe. It has a trap part.

  Here, when the first indoor unit side is on the positive pressure side compared to the second indoor unit side, air or the like flows backward through the first pipe, and an air leak sound or the like is generated in the second indoor unit. Therefore, in the air conditioning system of the present invention, a trap portion for storing drainage is provided in the first pipe to block backflow of air. Thereby, it is possible to prevent a leakage sound of air on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side through the first pipe.

  An air conditioning system according to a twenty-first aspect of the present invention is the air conditioning system according to any one of the sixth to sixteenth aspects of the present invention, wherein the first piping is configured such that the fluid flows backward to the first indoor unit side. Has a check valve to prevent.

  Here, when the first indoor unit side is on the positive pressure side compared to the second indoor unit side, air or the like flows backward through the first pipe, and an air leak sound or the like is generated in the second indoor unit. Therefore, in the air conditioning system of the present invention, a check valve that prevents the fluid from flowing backward is provided in the first pipe to prevent the air from flowing backward. Thereby, it is possible to prevent a leakage sound of air on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side through the first pipe.

  A drain socket according to a twenty-second invention is a drain socket that is attached to an indoor unit of an air conditioning system including at least two indoor units of a first indoor unit and a second indoor unit, and includes a pipe line part, an attachment part, It has. The pipe line portion is connected to the tip of a pipe extending from the second indoor unit that discharges the drain generated in the second indoor unit, and introduces the drain into the casing of the first indoor unit. The attachment portion is attached to the casing in the first indoor unit.

  Here, the drain socket attached to the casing of the indoor unit is connected to a pipe for discharging the drain generated in the second indoor unit, and a conduit portion for introducing the drain into the casing of the first indoor unit, And an attachment portion for attaching to a casing in one indoor unit.

  Conventionally, when draining from an indoor unit using piping, for example, it is necessary to provide a descending gradient of 1/100 or more, and it is difficult to construct the piping well in a ceiling space where concrete beams or the like are present. For this reason, there is a case where the drain generated in the indoor unit cannot be guided to a predetermined waste water treatment space.

  Accordingly, the drain socket of the present invention is attached to a first pipe that discharges the drain generated in the second indoor unit and leads the drain to the inside of the first indoor unit, and is attached to the casing in the first indoor unit. And a drain that is generated in the second indoor unit can be introduced into the first indoor unit.

  Thereby, it is possible to make the distance of the pipe for discharging the drain generated in the second indoor unit shorter than directly leading from the second indoor unit to the waste water treatment space. That is, if the distance of 1st piping becomes short, it will become possible to raise the freedom degree with respect to the construction for ensuring a predetermined drainage gradient.

  As a result, the drain generated by the indoor unit of the air conditioner can be reliably discharged to the outside.

  A drain socket according to a twenty-third invention is the drain socket according to the twenty-second invention, wherein the conduit is in contact with a drain pan that stores drain in the first indoor unit at a downstream end of the conduit. Has a part.

  Here, when there is a distance in the vertical direction between the downstream end of the duct portion and the bottom of the drain pan, the sound when the drain falls on the drain pan becomes loud. Therefore, in the drain socket of the present invention, a guide portion such as a rubber plate, a chain, a string, or the like, which is brought into contact with the bottom portion of the drain pan, is disposed at the downstream end of the conduit portion. As a result, the drain discharged from the pipe line portion flows into the drain pan through the guide portion, so that it is possible to prevent the sound generated by dropping.

  A drain socket according to a twenty-fourth aspect of the invention is the drain socket according to the twenty-second or twenty-third aspect of the invention, wherein the pipe line part has a pressure relief part for reducing the pressure in the pipe.

  Here, when the first indoor unit side is on the positive pressure side compared to the second indoor unit side, air or the like flows backward through the piping, and air leakage sound or the like is generated in the second indoor unit. Therefore, in the drain socket of the present invention, a pressure relief part is provided in the pipe line part, and here, the air that flows backward is escaped. As a result, it is possible to prevent air leakage sound and the like on the second indoor unit side, which are generated by connecting the first indoor unit side and the second indoor unit side with the pipe.

  A drain socket according to a twenty-fifth aspect of the present invention is the drain socket according to the twenty-fourth aspect of the present invention, wherein the opening end portion of the pressure relief portion faces downward in the vertical direction.

  Thereby, it becomes possible to prevent foreign matter from entering from the opening end of the pressure relief portion.

The drain socket according to a twenty-sixth aspect of the invention is the drain socket according to the twenty-fourth or twenty-fifth aspect of the invention, wherein the opening end of the pressure relief part is covered with a net.
Thereby, it becomes possible to more reliably prevent foreign matter from entering from the opening end of the pressure relief portion.

  A drain socket according to a twenty-seventh aspect of the present invention is the drain socket according to the twenty-second or twenty-third aspect of the present invention, wherein the pipe line part has a trap part for collecting a drain by bending a part of the pipe line part. ing.

  Here, when the first indoor unit side is on the positive pressure side compared to the second indoor unit side, air or the like flows backward through the piping, and air leakage sound or the like is generated in the second indoor unit. Therefore, in the drain socket of the present invention, a trap part for collecting drain is provided in the pipe line part to block backflow of air. As a result, it is possible to prevent air leakage sound and the like on the second indoor unit side, which are generated by connecting the first indoor unit side and the second indoor unit side with the pipe.

  A drain socket according to a twenty-eighth aspect of the present invention is the drain socket according to the twenty-seventh aspect of the present invention, wherein the conduit portion has a storage portion that stores the antibacterial agent at a position adjacent to the trap portion, The drain accumulated in the trap portion and the antibacterial agent are in contact with each other.

  Thereby, it is possible to prevent bacteria from being generated in the drain accumulated in the trap portion.

  A drain socket according to a twenty-ninth aspect of the invention is the drain socket according to the twenty-second or twenty-third aspect of the invention, wherein the pipe line portion prevents fluid from flowing back to the indoor unit side of another air conditioner. It has a check valve.

  Here, when the first indoor unit side is on the positive pressure side compared to the second indoor unit side, air or the like flows backward through the piping, and air leakage sound or the like is generated in the second indoor unit. Therefore, in the drain socket of the present invention, a check valve for preventing the fluid from flowing backward is provided in the pipe line portion to prevent the air from flowing backward. As a result, it is possible to prevent air leakage sound and the like on the second indoor unit side, which are generated by connecting the first indoor unit side and the second indoor unit side with the pipe.

  A drain socket according to a thirtieth aspect of the present invention is the drain socket according to any one of the twenty-second to twenty-ninth aspects of the present invention, wherein the conduit portion is capable of at least one of expansion and contraction and bending in the longitudinal direction of the conduit portion. Flexible part.

  Thereby, it becomes possible to connect easily with piping which discharges the drain extended from the 2nd indoor unit at the time of construction.

  According to the drainage method according to the first aspect of the invention, the drain can be reliably discharged to the wastewater treatment space.

  According to the indoor unit of the air conditioner according to the second aspect, the drain generated by the indoor unit of the air conditioner can be reliably discharged to the outside.

  According to the indoor unit of the air conditioner pertaining to the third aspect of the invention, it is possible to connect to a pipe from which drain is discharged from another indoor unit via a drain socket.

  According to the indoor unit of the air conditioner according to the fourth aspect of the present invention, it is possible to discharge the drain to a farther discharge space by draining up.

  According to the indoor unit of an air conditioner according to the fifth aspect of the present invention, even in an indoor unit of an air conditioner equipped with a humidifier, the drain generated in the humidifier can be generated without providing a separate receiving portion for the humidifier. It becomes possible to process.

  According to the air conditioning system pertaining to the sixth aspect of the invention, it is possible to reliably discharge the drain generated by the indoor unit of the air conditioning apparatus to the outside.

  According to the air conditioning system according to the seventh aspect of the invention, before the drain stored in the first drain pan overflows, for example, the operation of the second indoor unit is controlled, or the first drain pump in the first indoor unit is controlled. It is possible to take measures such as driving.

  According to the air conditioning system according to the eighth aspect of the present invention, based on the operation status of the second indoor unit (for example, whether or not it is operated, the type of operation such as cooling / heating, the strength of operation), or the detection result of the detection unit. It is possible to control the operation status (the presence or absence of operation, the strength of operation, etc.) of the first drain pump.

  According to the air conditioning system according to the ninth aspect of the present invention, the drain can be discharged before the drain overflows from the first drain pan.

  According to the air conditioning system pertaining to the tenth aspect of the present invention, it is possible to reliably prevent the drain discharged from the second indoor unit from the first drain pan from overflowing.

  According to the air conditioning system pertaining to the eleventh aspect of the invention, the control content for the first drain pump can be set according to the situation.

  According to the air conditioning system of the twelfth aspect of the invention, it is possible to take measures such as stopping the operation of the second indoor unit before the drain stored in the first drain pan overflows. .

  According to the air conditioning system pertaining to the thirteenth aspect of the present invention, it is possible to reliably prevent the drain discharged from the first drain pan from the second indoor unit from overflowing.

  According to the air conditioning system pertaining to the fourteenth aspect of the present invention, it is possible to set the control content for the second indoor unit or the second drain pump depending on the situation.

  According to the air conditioning system of the fifteenth aspect of the present invention, it is possible to reliably prevent the drain discharged from the second indoor unit from the first drain pan from overflowing.

  According to the air conditioning system pertaining to the sixteenth aspect of the present invention, it is possible to easily realize control for interlocking the first indoor unit and the second indoor unit.

  According to the air conditioning system pertaining to the seventeenth aspect of the present invention, air leakage sound or the like on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side through the first pipe is prevented. It becomes possible.

  According to the air conditioning system pertaining to the eighteenth aspect of the present invention, it is possible to prevent foreign matter from entering from the opening end of the pressure relief portion.

  According to the air conditioning system pertaining to the nineteenth aspect of the present invention, it is possible to more reliably prevent foreign matter from entering from the opening end of the pressure relief portion.

  According to the air conditioning system of the twentieth aspect of the invention, air leakage sound or the like on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side through the first pipe is prevented. It becomes possible.

  According to the air conditioning system pertaining to the twenty-first aspect of the present invention, air leakage sound or the like on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side through the first pipe is prevented. It becomes possible.

  According to the drain socket of the twenty-second aspect, it is possible to reliably discharge the drain generated by the indoor unit of the air conditioner to the outside.

  According to the drain socket of the twenty-third aspect, the drain discharged from the conduit portion flows into the drain pan through the guide portion, so that it is possible to prevent the sound generated by falling.

  According to the drain socket of the twenty-fourth aspect of the invention, it is possible to prevent an air leak sound or the like on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side with a pipe. It becomes.

  According to the drain socket of the twenty-fifth aspect of the present invention, it is possible to prevent foreign matter from entering from the opening end of the pressure relief portion.

  According to the drain socket of the twenty-sixth aspect of the present invention, it is possible to more reliably prevent foreign matter from entering from the opening end of the pressure relief portion.

  According to the drain socket pertaining to the twenty-seventh aspect of the invention, it is possible to prevent air leakage sound or the like on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side with piping. It becomes.

  According to the drain socket of the twenty-eighth aspect, it is possible to prevent bacteria from being generated in the drain accumulated in the trap portion.

  According to the drain socket of the twenty-ninth aspect of the present invention, it is possible to prevent air leakage sound or the like on the second indoor unit side that is generated by connecting the first indoor unit side and the second indoor unit side with a pipe. It becomes.

  According to the drain socket which concerns on 30th invention, it becomes possible to connect easily with piping which discharges | emits the drain extended from a 2nd indoor unit at the time of construction.

  It will be as follows if the air conditioning system 1 which concerns on one Embodiment of this invention is demonstrated using FIGS.

[Configuration of Air Conditioning System 1]
<Overall>
FIG. 1 is a schematic configuration diagram of an air conditioning system 1 according to an embodiment of the present invention.

  In the present embodiment, the air conditioning system 1 is an air conditioning system used for indoor air conditioning, and mainly includes an outdoor unit 2, a first indoor unit 4, a second indoor unit 9, and a first refrigerant communication pipe. 6 and a second refrigerant communication pipe 7, a so-called separate type air conditioning system. That is, in the present embodiment, the outdoor unit 2, the first indoor unit 4, and the second indoor unit are connected to each other by the refrigerant communication pipes 6 and 7 that are installed at the site after being shipped and installed at the installation site. It is constituted by. And the refrigerant circuit 10 of the air conditioning system 1 of this embodiment is comprised by connecting the outdoor unit 2, the 1st indoor unit 4, and the 2nd indoor unit 9 via the refrigerant | coolant communication pipes 6 and 7. FIG. ing.

  The air conditioning system 1 includes a controller 80 that controls the first indoor unit 4 and the second indoor unit 9. The controller 80 includes a first control unit 81 and a second control unit 82. The contents of control of the first control unit 81 and the second control unit 82 will be described in detail later.

  A first remote controller 83 and a second remote controller 84 are connected to the first indoor unit 4 and the second indoor unit 9, respectively. The first and second remote controllers 83 and 84 can set control in the first indoor unit 4 and the second indoor unit 9.

<Outdoor unit 2>
Next, the configuration of the outdoor unit 2 will be described with reference to FIG.

  The outdoor unit 2 is connected to the first indoor unit 4 via the first refrigerant communication pipe 6 and the second refrigerant communication pipe 7, and constitutes an outdoor refrigerant circuit 10 a as a part of the refrigerant circuit 10. .

  The outdoor unit 2 is an electrical component unit for controlling the operation of the outdoor refrigerant circuit components (described later) constituting the outdoor refrigerant circuit 10a (described later), the outdoor fan 36, and the respective parts constituting the outdoor unit 2 (see FIG. Not shown).

  The outdoor refrigerant circuit components constituting the outdoor refrigerant circuit 10a mainly include an accumulator 21, a compressor 22, a four-way switching valve 23, an outdoor heat exchanger 24, expansion valves 25a and 25b, There are a first closing valve 26 and a second closing valve 27.

  The accumulator 21 is a container for temporarily storing low-pressure refrigerant circulating in the refrigerant circuit 10 connected between the suction port of the compressor 22 and the four-way switching valve 23. The outlet of the accumulator 21 is connected to the suction port of the compressor 22 by a first suction pipe 28, and the inlet of the accumulator 21 is connected to the four-way switching valve 23 by a second suction pipe 29.

  The compressor 22 is a compressor having a function of sucking and compressing a low-pressure refrigerant to form a high-pressure refrigerant and then discharging it. The discharge port of the compressor 22 is connected to the four-way switching valve 23 by a discharge pipe 30.

  The four-way switching valve 23 is a valve for switching the flow direction of the refrigerant when switching between cooling and heating. During cooling, the discharge port of the compressor 22 and the outdoor heat exchanger 24 are connected and the accumulator 21 is connected. It is possible to connect the second closing valve 27, connect the discharge port of the compressor 22 and the second closing valve 27 during heating, and connect the accumulator 21 and the outdoor heat exchanger 24. The four-way switching valve 23 is connected to the outdoor heat exchanger 24 by the first refrigerant pipe 31 and is connected to the second closing valve 27 by the third refrigerant pipe 34.

  The outdoor heat exchanger 24 functions as a refrigerant cooler that uses outdoor air as a heat source during cooling, and functions as a refrigerant heater that uses outdoor air as a heat source during heating. One end of the outdoor heat exchanger 24 is connected to the first refrigerant pipe 31, and the other end of the outdoor heat exchanger 24 is connected to the second refrigerant pipe 32.

  The expansion valves 25a and 25b reduce the pressure of the high-pressure refrigerant cooled in the outdoor heat exchanger 24 before cooling to the heat exchanger (heat exchanger) 51 during cooling, and are cooled in the heat exchangers 51 and 91 during heating. This is an electric expansion valve that can decompress the high-pressure refrigerant before sending it to the outdoor heat exchanger 24. The expansion valves 25 a and 25 b are disposed between the first indoor unit 4 and the second indoor unit 9 and the first closing valve 26.

  The first closing valve 26 is a valve provided at a connection portion between the second refrigerant pipe 32 and the first refrigerant communication pipe 6. The second closing valve 27 is a valve provided at a connection portion between the third refrigerant pipe 34 and the second refrigerant communication pipe 7. The second closing valve 27 is connected to the four-way switching valve 23 by a third refrigerant pipe 34.

  The outdoor fan 36 takes in air to the outdoor heat exchanger 24 side. The outdoor fan 36 is a propeller fan driven by an outdoor fan motor 36 a and is disposed on the front side of the outdoor heat exchanger 24.

  The electrical component unit mainly controls the rotation speed of the compressor motor 22a, the outdoor fan motor 36a, and the like.

<First indoor unit 4, second indoor unit 9>
Next, the configuration of the first indoor unit 4 and the second indoor unit 9 will be described.

  As shown in FIG. 1, the first indoor unit 4 and the second indoor unit 9 are connected to the outdoor unit 2 via a first refrigerant communication pipe 6 and a second refrigerant communication pipe 7, and the same refrigerant circuit The indoor refrigerant circuit 10 b is configured as a part of the indoor unit 10. Furthermore, as shown in FIG. 5, the first indoor unit 4 and the second indoor unit 9 guide the drain generated in the second indoor unit 9 to the first indoor unit 4 via the first pipe 71. It is configured.

  The first indoor unit 4 is configured as a ceiling-embedded first indoor unit 4 that is embedded and installed in an installation opening that opens in the ceiling 70. As shown in FIGS. 2 to 5, the first indoor unit 4 mainly includes a fan 45, a heat exchanger 51, a drain pan 52, a drain pump 53, and a float switch (detection unit) in the casing 40. 54 is housed, and a discharge side drain socket (discharge unit) 55 and a reception side drain socket 56 are attached to the casing 40.

  As shown in FIG. 2, the casing 40 includes a box-shaped main body casing 41 that opens downward, and a decorative panel 42 that covers the bottom opening of the main body casing 41. The main body casing 41 includes a top plate 41a and a side plate 41b extending downward from the outer edge of the top plate 41a. As shown in FIG. 3, the decorative panel 42 is configured by a substantially square plate member. And the decorative panel 42 is attached to the lower end part of the side plate 41b of the main body casing 41, and is attached along the ceiling 70 so that the peripheral part contacts the lower surface of the ceiling 70. As shown in FIG. 3, a suction port 43 is opened at a substantially central portion of the decorative panel 42. The suction port 43 is provided with an air filter 44 (see FIG. 2) for removing floating substances such as dust contained in room air. Further, as shown in FIG. 3, the decorative panel 42 has four air outlets 42a. The air outlet 42 a is formed in an elongated rectangular shape so as to extend along the four sides of the decorative panel 42 outside the suction port 43. The blower outlet 42a is provided with a substantially rectangular plate-like flap 47 extending along the blower outlet 42a.

  As shown in FIG. 2, the fan 45 is disposed at a substantially central position inside the casing 40 and is attached to the casing 40 via a fan motor 46. The fan 45 is rotationally driven by the driving force of the fan motor 46 and sends out the air sucked from the suction port 43 to the outside in the radial direction of the fan 45.

  As shown in FIGS. 2 and 3, the heat exchanger 51 is disposed so as to surround the fan 45. The heat exchanger 51 is connected to the outdoor unit 2 via the refrigerant communication pipes 6 and 7. The heat exchanger 51 operates as an evaporator during the cooling operation and as a condenser during the heating operation, and is configured to generate conditioned air by cooling or heating the air sent from the fan 45. ing.

  As shown in FIG. 2, the drain pan 52 is provided below the heat exchanger 51 and receives and stores the drain generated in the heat exchanger 51.

  As shown in FIGS. 3 and 4, the drain pump 53 is a pump for pumping up and draining the drain stored in the drain pan 52, and is provided above the drain pan 52.

  The float switch 54 is a sensor that detects drainage, and is disposed at a position that is a predetermined distance away vertically above the bottom 52a of the drain pan 52, as shown in FIGS. Accordingly, when a predetermined amount of drain is stored in the drain pan 52, the drain operates the float switch 54.

  The discharge side drain socket 55 is a socket for connecting the drain to the second pipe 72 for guiding the drain to the waste water treatment space, and is disposed above the side plate 41b as shown in FIGS. As a result, the drain stored in the drain pan 52 is drained up by the drain pump 53 and discharged toward the waste water treatment space via the discharge side drain socket 55 and the second pipe 72.

  The receiving-side drain socket 56 is a socket for connecting to the first pipe 71 for discharging the drain generated in the second indoor unit 9, and as shown in FIGS. 3 and 4, below the side plate 41b in the casing 40. Is arranged. And the receiving side drain socket 56 has the pipe line part 57 and the attaching part 58, as shown to Fig.6 (a) and FIG.6 (b). The pipe line part 57 is formed so as to be connectable to the first pipe 71 that discharges the drain generated in the second indoor unit 9. The attachment portion 58 is a portion for attachment to the side plate 41b in the casing 40, and has a screw hole 58a for attachment screws. And the attaching part 58 is attached to the side plate 41b with the screw | thread 59, as shown to Fig.6 (a) and FIG.6 (b). As a result, the drain generated in the second indoor unit 9 is guided to the drain pan 52 via the first pipe 71 and the pipe line portion 57. Further, the receiving-side drain socket 56 is disposed below in the vertical direction as compared with the discharging-side drain socket 55.

  The second indoor unit 9 is configured in the same manner as the first indoor unit 4 described above except that the receiving side drain socket 56 is not provided. Therefore, the description of the second indoor unit 9 is omitted here. Hereinafter, the heat exchanger in the first indoor unit 4 is the first heat exchanger 51, the heat exchanger in the second indoor unit 9 is the second heat exchanger 91, the drain pan in the first indoor unit 4 is the first drain pan 52, The drain pan in the second indoor unit 9 is the second drain pan 92, the drain pump in the first indoor unit 4 is the first drain pump 53, the drain pump in the second indoor unit 9 is the second drain pump 93, and the float switch in the first indoor unit 4 The first float switch 54, the float switch in the second indoor unit 9 as the second float switch 94, the discharge side drain socket in the first indoor unit 4 as the first discharge side drain socket 55, and the discharge side drain in the second indoor unit 9. The socket is indicated as a second discharge side drain socket 95.

  Here, a method of attaching the receiving side drain socket 56 to the first indoor unit 4 will be described.

  The first indoor unit 4 shipped to the installation location is provided with a receiving part 60 formed so that a receiving-side drain socket 56 can be attached. As shown in FIGS. 7A and 7B, the receiving part 60 has an opening 61, a lid part 62, and an attachment part 63. The opening 61 is a hole that guides the duct portion 57 in the receiving-side drain socket 56 to the inside of the casing 40, and is formed in a part of the side plate 41b. The lid 62 has a shape that can be fitted into the opening 61. The attachment portion 63 is molded or fixed integrally with the lid portion 62 and has a screw hole 63a for attachment screws. 7A and 7B, the lid portion 62 and the attachment portion 63 are attached to the side plate 41b with screws 64 in a state where the lid portion 62 is fitted in the opening portion 61. It is attached.

  Since the first indoor unit 4 has the receiving portion 60 as described above, the receiving-side drain socket 56 can be easily attached at the installation location. That is, a person who constructs the air conditioning system 1 of the present embodiment locally removes the lid portion 62 and the attachment portion 63 that are fixed by the screws 64 in the receiving portion 60 first. Then, as shown in FIG. 6A, a receiving-side drain socket 56 having a pipe line portion 57 and an attachment portion 58 is attached.

<Operation control in the first indoor unit and the second indoor unit>
In the air conditioning system 1 of the present embodiment, the drain generated in the second indoor unit 9 is guided to the first indoor unit 4 and discharged to the wastewater treatment space by the first drain pump 53 of the first indoor unit 4. . For this reason, when the first indoor unit 4 is stopped, the first drain pump 53 does not operate and the drain is stored in the first drain pan 52. And the problem that drain overflows from the 1st drain pan 52 generate | occur | produces.

  Therefore, in the air conditioning system 1 of the present embodiment, the controller 80 is provided with a first control unit 81 that controls the first drain pump 53 so that the first float switch 54 can be detected at all times. That is, as shown in FIG. 8, the first control unit 81 controls the first drain pump 53 to operate when the first float switch 54 of the first indoor unit 4 is activated. Thereby, before the drain overflows from the first drain pan 52, the first drain pump 53 can be operated to drain the drain. Further, whether or not the first control unit 81 operates the first drain pump 53 under the above conditions can be set by the first remote controller 83. This makes it possible to make the above settings arbitrarily.

  Furthermore, in the air conditioning system 1 of the present embodiment, the controller 80 is provided with a second control unit 82. As shown in FIG. 9, when the second control unit 82 detects that a predetermined time has elapsed while the float switch 54 in the first indoor unit 4 is operating, the second control unit 82 operates the second drain pump 93 of the second indoor unit 9. Control to stop. That is, the second control unit 82 determines that the first drain pump 53 is not functioning based on the operating state of the float switch 54 and stops the operation of the second drain pump 93 of the second indoor unit 9. Is controlling. Thereby, since the drain discharged from the second indoor unit 9 can be stopped, it is possible to prevent the drain from overflowing from the first drain pan 52. Further, whether or not the second control unit 82 operates the second drain pump 93 under the above conditions can be set by the first remote controller 83. This makes it possible to make the above settings arbitrarily.

[Characteristics of air conditioning system 1]
(1)
The air conditioning system 1 of this embodiment guides the drain generated in the second indoor unit 9 to the first indoor unit 4 and discharges it to the waste water treatment space together with the drain generated in the first indoor unit 4.

  Conventionally, when draining from an indoor unit using piping, for example, it is necessary to provide a descending gradient of 1/100 or more. And when there is a concrete beam or the like, it is necessary to make a pipe to avoid the concrete beam, and it is difficult to construct the pipe well to a far position due to the regulation such as the gradient.

  In response to these problems, in the air conditioning system 1 of the present embodiment, the distance of the first pipe 71 that discharges the drain generated in the second indoor unit 9 is directly guided from the second indoor unit 9 to the wastewater treatment space. Can also be shortened. Specifically, as shown in FIG. 5, the first pipe 71 may be led from the second indoor unit 9 to the first indoor unit 4, so that the length of the drain pipe is set rather than being led directly to the wastewater treatment space. Can be shortened. Further, since the first drain pump 53 of the first indoor unit 4 can be drained up once, the drain pipe can be extended to a farther waste water treatment space.

  Thereby, it becomes possible to raise the freedom degree with respect to construction for ensuring a predetermined drainage gradient. For example, as shown in FIG. 19, even if the concrete beam B existing on the path of the first pipe 71 is avoided, a predetermined drainage gradient can be secured. As a result, the drain generated by the second indoor unit 9 of the air conditioning system 1 can be reliably discharged to the waste water treatment space.

(2)
The first indoor unit 4 in the air conditioning system 1 of the present embodiment has a receiving unit 60 for introducing drain generated in another indoor unit (second indoor unit 9 in the present embodiment) into the casing 40. It is provided on the side plate 41 b in the casing 40. Thereby, it is possible to introduce the drain generated in the second indoor unit 9 into the first indoor unit 4.

(3)
In the air conditioning system 1 of the present embodiment, the drain is sucked up by the second drain pump 93 from the second drain pan 92 of the second indoor unit 9 and is transferred to the first drain pan 52 of the first indoor unit 4 via the first pipe 71. Guided. Then, the drain led to the first indoor unit 4 and the drain generated by the first heat exchanger 51 are sucked up by the first drain pump 53 from the first drain pan 52 and stored via the second pipe 72. Drain is introduced into the wastewater treatment space.

  Thereby, the distance of the 1st piping 71 can be shortened, and it becomes possible to raise the freedom degree with respect to the construction for ensuring a predetermined drainage gradient. As a result, the drain generated by the second indoor unit 9 of the air conditioning system 1 can be reliably discharged to the waste water treatment space.

[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the air conditioning system 1 of the above embodiment, as shown in FIGS. 6 (a) and 6 (b), an example in which the receiving-side drain socket 56 is formed from a pipe line portion 57 and an attachment portion 58 is given. Explained. However, the present invention is not limited to this.

  For example, as shown in FIG. 10, the receiving-side drain socket 200 includes a pipe line part 201, an attachment part 202, a guide part 203, a pressure relief part 204, a net 205, and a flexible part 206. Also good. The pipe line part 201 is formed so as to be connectable to the first pipe 71 that discharges the drain generated in the second indoor unit 9. The attachment part 202 is a part for attaching to the side plate 41b in the casing 40, and is attached to the side plate 41b by screws (not shown). The guide portion 203 is a rubber plate, is attached to the most downstream end portion of the conduit portion 201, and is in contact with the bottom portion 52 a of the first drain pan 52. As a result, the drain discharged from the pipe line portion 201 flows into the first drain pan 52 through the guide portion 203, so that it is possible to prevent the sound generated by dropping. The pressure relief portion 204 is an opening portion of the first pipe 71 that is provided to reduce the pressure in the first pipe 71 that connects the first indoor unit 4 and the second indoor unit 9. Thereby, the leakage sound of the air in the 2nd indoor unit 9 side etc. which generate | occur | produce by connecting the 1st indoor unit 4 side and the 2nd indoor unit 9 side by the 1st piping 71 are prevented. And the opening edge part 204a of the pressure relief part 204 has faced the perpendicular direction lower side. This prevents foreign matter from entering from the opening end portion 204a. The opening end portion 204 a is covered with a net 205. Thereby, it is possible to more reliably prevent foreign matter from entering from the opening end portion 204a. The flexible part 206 is a part that can be expanded and contracted or bent in the longitudinal direction of the pipe line part 201, and is disposed upstream of the pressure relief part 204 in the drain drain direction. Thereby, since the position of the upstream end of the drain socket 200 can be freely moved in the vertical direction or the horizontal direction at the time of construction, the first pipe 71 can be easily connected. Note that the flexible portion 206 may be able to expand and contract and bend in the longitudinal direction of the conduit portion 201.

  By connecting the receiving-side drain socket 200 having the structure described above, the drain generated in the second indoor unit 9 is guided to the first drain pan 52 via the first pipe 71, the flexible part 206, and the pipe line part 201. It comes to be.

  As shown in FIG. 11, the receiving-side drain socket 210 includes a duct portion 211, an attachment portion 212, a guide portion 203, a trap portion 214, and an antibacterial agent storage portion (storage portion) 215. May be. The pipe line part 211 is formed so as to be connectable to the first pipe 71 that discharges the drain generated in the second indoor unit 9. The attachment part 212 is a part for attaching to the side plate 41b in the casing 40, and is attached to the side plate 41b by screws (not shown). The guide portion 213 is a chain, is attached to the most downstream end portion of the conduit portion 211, and is in contact with the bottom portion 52 a of the first drain pan 52. As a result, the drain discharged from the pipe line section 211 flows into the first drain pan 52 through the guide section 213, so that it is possible to prevent the sound generated by falling. The trap part 214 is formed so that a part of the pipe line part 211 can be bent and the drain can be collected. As a result, the backflow of air is blocked by the drain accumulated in the trap portion 214. As a result, it is possible to prevent an air leak sound or the like on the second indoor unit 9 side that is generated by connecting the first indoor unit 4 side and the second indoor unit 9 side through the first pipe 71. The antibacterial agent storage box (storage part) 215 is a box part for storing the antibacterial agent 216, and a part facing the pipe line part 211 or the trap part 214 is formed in a slit shape. Thereby, the drain accumulated in the trap part 214 can come into contact with the antibacterial agent 216, and the drain in the trap part 214 can be kept clean.

  By connecting the receiving side drain socket 210 having the structure described above, the drain generated in the second indoor unit 9 is guided to the first drain pan 52 via the first pipe 71, the trap part 214, and the pipe line part 211. It comes to be.

  In addition, as shown in FIG. 12, the receiving-side drain socket 220 may include a conduit portion 221, a mounting portion 222, a guide portion 223, and a check valve 224. The pipe line part 221 is formed so as to be connectable to the first pipe 71 that discharges the drain generated in the second indoor unit 9. The attaching part 222 is a part for attaching to the side plate 41b in the casing 40, and is attached to the side plate 41b by screws (not shown) having the same size as the diameter of the pipe line part 211. The guide portion 223 is a string, is attached to the most downstream end portion of the conduit portion 221, and is in contact with the bottom portion 52 a of the first drain pan 52. As a result, the drain discharged from the pipe line part 221 flows into the first drain pan 52 through the guide part 223, so that it is possible to prevent the sound generated by falling. The check valve 224 is disposed in a part of the pipe line part 221 and prevents a fluid such as air or drain from flowing backward from the downstream side to the upstream side in the drain discharge direction. Thereby, it becomes possible to prevent the leakage sound of the air in the 2nd indoor unit 9 side etc. which generate | occur | produce by connecting the 1st indoor unit 4 side and the 2nd indoor unit 9 side by the 1st piping 71.

  By connecting the receiving-side drain socket 220 having the structure described above, the drain generated in the second indoor unit 9 is transferred to the first drain pan 52 via the first pipe 71, the check valve 224, and the pipe line part 221. Be guided.

(B)
In the air conditioning system 1 of the said embodiment, the 1st control part 81 gave and demonstrated the example which controls to operate the 1st drain pump 53, when the float switch 54 of the 1st indoor unit 4 act | operates. However, the present invention is not limited to this.

  For example, the first control unit 81 may control the first drain pump 53 to operate in accordance with the cooling operation of the second indoor unit 9. Further, whether or not the first control unit 81 operates the first drain pump 53 in accordance with the cooling operation of the second indoor unit 9 can be set by the first remote controller 83. Also in this case, the same effect as the air conditioning system 1 according to the above embodiment can be obtained.

(C)
In the air conditioning system 1 of the above embodiment, when the second control unit 82 detects that a predetermined time has passed with the float switch 54 of the first indoor unit 4 operating, the second drain pump of the second indoor unit 9 The example of controlling to stop the operation of 93 has been described. However, the present invention is not limited to this.

  For example, the second control unit 82 may control to stop the cooling operation of the second indoor unit 9 when detecting that a predetermined time has passed with the float switch 54 of the first indoor unit 4 operating. . Even in this case, the same effect as the air conditioning system 1 according to the above embodiment can be obtained.

(D)
In the air conditioning system 1 of the above-described embodiment, the first indoor unit 4 or the second indoor unit 9 is controlled to prevent the drain from overflowing from the first drain pan 52. However, the present invention is not limited to this.

  For example, as shown in FIG. 13, an electromagnetic valve 73 capable of adjusting the flow rate in the first pipe 71 is provided in the first pipe 71 that communicates the first indoor unit 4 and the second indoor unit 9. When it is detected that the predetermined time has passed with the float switch 54 of the machine 4 operating, the first control unit 81 may perform control so that the electromagnetic valve 73 is closed. Even in this case, it is possible to prevent the drain from overflowing from the first drain pan 52.

(E)
In the air conditioning system 1 of the above-described embodiment, the first indoor unit 4 and the second indoor unit 9 are connected in a control manner to prevent drain from overflowing from the first drain pan 52. However, the present invention is not limited to this.

  For example, as shown in FIG. 13, an electromagnetic valve 73 capable of adjusting the flow rate in the first pipe 71 is provided in the first pipe 71 that communicates the first indoor unit 4 and the second indoor unit 9. Then, the first indoor unit 4 and the electromagnetic valve 73 are interlocked to prevent drain from overflowing from the first drain pan 52 without connecting the first indoor unit 4 and the second indoor unit 9 in terms of control. It becomes possible. That is, it is possible to prevent drain leakage in the first indoor unit 4 by individual control in each of the indoor units 4 and 9.

  Specifically, when the float switch 54 of the first indoor unit 4 detects an abnormality, the operation of the first indoor unit 4 is forcibly stopped. Here, the solenoid valve 73 disposed on the first pipe 71 is closed. Thereby, the drain does not flow through the first pipe 71, and the water level of the second drain pan 92 of the second indoor unit 9 rises. Then, when a float switch (not shown) provided in the second indoor unit 9 detects an abnormality, the operation of the second indoor unit 9 is forcibly stopped. Even in this case, the same effect as the air conditioning system 1 according to the above embodiment can be obtained.

(F)
In the air conditioning system 1 of the above-described embodiment, an example in which the first indoor unit 4 shipped to the installation location includes a receiving unit 60 as shown in FIGS. 7A and 7B is given. explained. However, the present invention is not limited to this.

  For example, as shown in FIGS. 14A and 14B, the receiving portion 160 has a slit hole 162 formed in the side plate 41b of the casing 40 and a screw hole 163a for a mounting screw. Also good. In this case, a person who constructs the air conditioning system 1 of the present embodiment locally cuts the slit hole 162 first and provides an opening in the side plate 41b. Then, as shown in FIG. 6A, a receiving-side drain socket 56 having a pipe line portion 57 and an attachment portion 58 is attached. Also in this case, the same effect as the air conditioning system 1 according to the above embodiment can be obtained.

(G)
In the air conditioning system 1 of the present invention, as shown in FIGS. 15 and 16, the first indoor unit 4 may include a natural evaporation humidifier (humidifier) 100 separately.

  Hereinafter, the natural evaporation humidifier 100 will be described. In addition, description of the site | part which is common in the 1st indoor unit 4 is abbreviate | omitted here.

  As shown in FIGS. 15 and 16, the natural evaporation humidifier 100 includes a humidifying element 101, a water supply pan 102, a drain pan 103, and a drain pipe 104. The humidifying element 101 humidifies the conditioned air blown from the fan motor 46 side. The water supply pan 102 supplies water to the humidifying element 101. The drain pan 103 is disposed below the humidifying element 101 and the water supply pan 102 and collects the drain generated in the humidifying element 101. The drain pipe 104 guides the drain collected in the drain pan 103 into the casing of the first indoor unit 4.

  Here, the receiving-side drain socket 56 can guide the drain from both the first pipe 71 and the drain pipe 104 into the casing 40. In the air conditioning system 1 of the present embodiment, the first pipe 71 and the drain pipe 104 are joined and then connected to the receiving-side drain socket 56. Thereby, even if it is an air conditioning system provided with the natural evaporation type humidifier 100, it becomes possible to process a drain, without providing the drainage equipment for the natural evaporation type humidifier 100 separately.

  Furthermore, although the natural evaporative humidifier 100 has been described with an example in which the first pipe 71 and the drain pipe 104 are joined and then connected to the receiving-side drain socket 56, the invention is not limited thereto.

  For example, as shown in FIG. 17, a drain socket 56 as shown in FIGS. 6 (a) and 6 (b) is attached to the casing 105 of the natural evaporation humidifier 100, and the drain from the first pipe 71 is removed. It may be guided to the drain pan 103.

(H)
In the air conditioning system 1 of the said embodiment, in order to connect the 1st piping 71 to the 1st indoor unit 4, it gave and demonstrated the example attached through the receiving side drain socket 56. FIG. However, the present invention is not limited to this.

  For example, the first pipe 71 may be led directly into the casing 40 of the first indoor unit 4 without using the receiving-side drain socket 56. Also in this case, the same effect as the air conditioning system 1 according to the above embodiment can be obtained.

(I)
In the air conditioning system 1 of the above embodiment, the example in which the second indoor unit 9 has the second drain pump 93 has been described. However, the present invention is not limited to this.

  The second indoor unit 9 may be configured to naturally drain from the second drain pan 92 via the first pipe 71 as shown in FIG. Also in this case, the same effect as the air conditioning system 1 according to the above embodiment can be obtained.

(J)
In the air conditioning system 1 of the above embodiment, the example in which the indoor unit connected to the first indoor unit 4 via the first pipe is one of the second indoor units 9 has been described. However, the present invention is not limited to this.

  For example, two or more indoor units may be arranged on the upstream side of the drain pipe. Two or more indoor units may be disposed on the downstream side of the drain pipe. Moreover, the 1st indoor unit and the 2nd indoor unit do not need to be arrange | positioned in the same refrigerant | coolant.

The schematic block diagram of the air conditioning system which concerns on one Embodiment of this invention. Sectional drawing of the 1st indoor unit and the 2nd indoor unit which are included in the air conditioning system of FIG. The top view of the 1st indoor unit and the 2nd indoor unit which are included in the air conditioning system of FIG. The expanded sectional view of the drain pump periphery of the 1st indoor unit of FIG. Explanatory drawing which showed the arrangement | positioning method of the 1st indoor unit and the 2nd indoor unit contained in the air conditioning system of FIG. (A), (b) is the expanded sectional view of the receiving side drain socket periphery of the 1st indoor unit of FIG. 3, and an enlarged perspective view. (A), (b) is the expanded sectional view of the receiving part periphery of the 1st indoor unit of FIG. 3, and an enlarged perspective view. The functional block diagram of the air conditioning system which concerns on one Embodiment of this invention. The functional block diagram of the air conditioning system which concerns on one Embodiment of this invention. Sectional drawing of the receiving side drain socket contained in the air conditioning system which concerns on other embodiment of this invention. Sectional drawing of the receiving side drain socket contained in the air conditioning system which concerns on other embodiment of this invention. Sectional drawing of the receiving side drain socket contained in the air conditioning system which concerns on other embodiment of this invention. Explanatory drawing which showed the air conditioning system which concerns on other embodiment of this invention. (A), (b) is the expanded sectional view of the receiving part periphery of the 1st indoor unit contained in the air conditioning system which concerns on other embodiment of this invention, and an enlarged perspective view. The top view of the 1st indoor unit contained in the air conditioning system which concerns on other embodiment of this invention. Sectional drawing of the 1st indoor unit contained in the air conditioning system which concerns on other embodiment of this invention. Sectional drawing of the 1st indoor unit contained in the air conditioning system which concerns on other embodiment of this invention. Explanatory drawing explaining the air conditioning system which concerns on other embodiment of this invention. Explanatory drawing explaining the air conditioning system which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning system 2 Outdoor unit 4 1st indoor unit 6 1st refrigerant | coolant connecting pipe 7 2nd refrigerant | coolant connecting pipe 9 2nd indoor unit 10 Refrigerant circuit 10a Outdoor side refrigerant circuit 10b Indoor side refrigerant circuit 40 Casing 41 Main body casing 41a Top plate 41b Side plate 42 Cosmetic panel 42a Air outlet 43 Air inlet 44 Air filter 45 Fan 46 Fan motor 47 Flap 51 1st heat exchanger (1st heat exchange part)
52 1st drain pan 52a Bottom 53 1st drain pump 54 1st float switch (detection part)
55 Discharge side drain socket (discharge section)
56 Receiving side drain socket 57 Pipe portion 58 Mounting portion 58a Screw hole 59 Screw 60 Receiving portion 61 Opening portion 62 Cover portion 63 Mounting portion 63a Screw hole 64 Screw 70 Ceiling 71 First piping 72 Second piping 73 Solenoid valve 80 Controller 81 1st control part 82 2nd control part 83 1st remote control 84 2nd remote control 91 2nd heat exchanger (2nd heat exchange part)
92 2nd drain pan 93 2nd drain pump 94 2nd float switch 95 Discharge side drain socket (discharge part)
100 Natural evaporation humidifier (humidifier)
101 Humidifying element 102 Water supply pan 103 Drain pan 104 Drain pipe 105 Casing 160 Receiving portion 162 Slit hole portion 163a Screw holes 200, 210, 220 Receiving side drain sockets 201, 211, 221 Pipe portions 202, 212, 222 Mounting portions 203, 213 , 223 Guide part 204 Pressure relief part 204a Open end part 205 Net 206 Flexible part 214 Trap part 215 Antibacterial agent storage box (storage part)
216 Antibacterial agent 224 Check valve

Claims (30)

A drain drainage method for an air conditioning system 1 including at least two indoor units of a first indoor unit (4) and a second indoor unit (9),
Drain generated in the second indoor unit is guided to the first indoor unit via the first pipe (71), and the drain is drained from the first indoor unit to the waste water treatment space via the second pipe (72). Drain draining method. An air conditioner indoor unit (4) in which a heat exchange part (51) and a drain pump (53) for discharging drain generated in the heat exchange part are housed in a casing (40),
A receiving portion (60) provided in the casing and for introducing the drain generated in the indoor unit (9) of the other air conditioner into the casing;
Air conditioner indoor unit (4). The receiving part is formed so that a drain socket (56, 200, 210, 220) for connecting to a pipe (71) from which drain generated in the indoor unit of the other air conditioner is discharged can be attached. Yes,
The indoor unit of the air conditioning apparatus of Claim 2. The receiving portion is disposed vertically below a discharge portion (55) provided in the casing for discharging the drain to the outside of the casing.
The indoor unit of the air conditioning apparatus of Claim 2 or 3. A humidifier (100) for humidifying the conditioned air blown from the casing;
The receiving part can also guide the drain generated in the humidifier into the casing.
The indoor unit of the air conditioning apparatus of any one of Claim 2 to 4. A first heat exchanger (51), a first drain pan (52) disposed below the first heat exchanger to store drain, and a first drain pump for discharging the drain stored in the first drain pan. A first indoor unit (4) having (53);
A second indoor unit (9) having a second heat exchange part (91) and a second drain pan (92) that is disposed below the second heat exchange part and stores drainage;
A first pipe (71) for guiding the drain discharged from the second indoor unit to the first drain pan of the first indoor unit;
A second pipe (72) for guiding the drain stored in the first drain pan to a waste water treatment space;
An air conditioning system (1) comprising: The first indoor unit further includes a detection unit (54) that detects a water level abnormality in the first drain pan.
The air conditioning system according to claim 6. A first control unit (81) for controlling the first drain pump based on an operation status of the second indoor unit or a detection result of the detection unit;
The air conditioning system according to claim 6 or 7. The first control unit operates the first drain pump when the detection unit detects a water level abnormality.
The air conditioning system according to claim 8. The first control unit causes the first drain pump to operate while the second indoor unit is performing a cooling operation.
The air conditioning system according to claim 8. A first setting unit (83) capable of setting the control content of the first control unit;
The control content is whether or not the first drain pump is operated while the second indoor unit is performing the cooling operation.
The air conditioning system according to claim 10. A second control unit (82) for controlling the second indoor unit based on a detection result of the detection unit;
The air conditioning system according to claim 7. The second control unit stops the cooling operation of the second indoor unit or discharges the drain stored in the second drain pan to the second indoor unit when the detection unit detects a water level abnormality. When the second drain pump is installed, the second drain pump is stopped.
The air conditioning system according to claim 12. A second setting unit (83) capable of setting the control content of the second control unit;
The control content is whether the cooling operation of the second indoor unit is stopped when the detection unit detects a water level abnormality, or the drain stored in the second drain pan is discharged to the second indoor unit. If the second drain pump is installed, whether to stop the second drain pump,
The air conditioning system according to claim 13. The first pipe has a solenoid valve (73) for adjusting a flow rate in the first pipe,
The first control unit closes the solenoid valve when the detection unit detects a water level abnormality.
The air conditioning system according to any one of claims 6 to 14. The first indoor unit and the second indoor unit are arranged in the same refrigerant system (10).
The air conditioning system according to any one of claims 6 to 15. The first pipe has a pressure relief portion (204) for lowering the pressure in the first pipe.
The air conditioning system according to any one of claims 6 to 16. The opening end portion (204a) of the pressure relief portion is directed vertically downward.
The air conditioning system according to claim 17. The opening end of the pressure relief part is covered with a net (205),
The air conditioning system according to claim 17 or 18. The first pipe has a trap portion (214) for collecting the drain by bending a part of the first pipe.
The air conditioning system according to any one of claims 6 to 16. The first pipe has a check valve (224) that prevents a fluid from flowing back to the first indoor unit.
The air conditioning system according to any one of claims 6 to 16. A drain socket (56, 200, 210, 220) attached to the indoor unit of the air conditioning system (1) including at least two indoor units of a first indoor unit (4) and a second indoor unit (9). ,
A conduit for connecting the leading end of a pipe (71) extending from the second indoor unit for discharging the drain generated in the second indoor unit and for introducing the drain into the casing (40) of the first indoor unit. Parts (201, 211, 221) and attachment parts (202, 212, 222) for attaching to the casing in the first indoor unit,
Drain socket equipped with. The pipe section has a guide section (203, 213, 223) in contact with a drain pan (52) for storing the drain in the first indoor unit at a downstream end of the pipe section.
The drain socket according to claim 22. The pipe line portion has a pressure relief portion (204) for lowering the pressure in the pipe.
The drain socket according to claim 22 or 23. The opening end portion (204a) of the pressure relief portion is directed vertically downward.
The drain socket according to claim 24. The opening end of the pressure relief part is covered with a net (205),
The drain socket according to claim 24 or 25. The conduit portion has a trap portion (214) for collecting the drain by bending a part of the conduit portion.
The drain socket according to claim 22 or 23. The conduit portion has a storage portion (215) for storing an antibacterial agent (216) at a position adjacent to the trap portion,
The storage portion is formed so that the drain and the antibacterial agent stored in the trap portion are in contact with each other.
The drain socket according to claim 27. The pipe section has a check valve (224) for preventing fluid from flowing back to the indoor unit side of the other air conditioner.
The drain socket according to claim 22 or 23. The pipe line part has a flexible part (206) capable of at least one of expansion and contraction and bending in the longitudinal direction of the pipe line part.
The drain socket according to claim 22 to 29.

Images