JP2019132459A - Air conditioning system - Google Patents

Abstract

To provide an air conditioning system which has suppressed dew condensation or mold generating in an air supply air passage.SOLUTION: An air conditioning system 50 includes: an indoor unit 1 including a heat exchanger 12 for heating or cooling the air, a blower 11 for delivering the air passing through the heat exchanger 12, and an operation control part 13 for controlling the heat exchanger 12 and the blower 11; and an air supply air passage 41 for allowing the air delivered from the heat exchanger 12 by the blower 11 to go to a habitable room 42 different from an installation place of the indoor unit 1. The operation control part 13 continues the operation of the blower 11 for certain time after a cooling operation for cooling the air by the heat exchanger 12 is stopped.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioning system for air conditioning a living room in a building.

  Patent Document 1 uses an underfloor space of a double floor as an air supply path for air conditioning or ventilation, and provides an opening with a damper capable of adjusting the air volume on the floor surface of each living room. An air conditioning system is disclosed in which warm air is supplied from an opening in accordance with the air conditioning load of each room and air conditioning is performed in each room.

Japanese Patent No. 5137599

  The air forming the cold air sent out from the indoor unit during the cooling operation has a higher relative humidity than the air taken into the indoor unit.

  When the location where the indoor unit is installed and the living room subject to air conditioning are separated, the air supply air passage connecting the indoor unit and the living room becomes long, and air with high relative humidity remaining in the air supply air passage is naturally supplied. Difficult to be discharged from the air path. Therefore, in the invention disclosed in Patent Document 1, after the cooling operation is stopped, the state where air with high relative humidity stays in the supply air passage continues for a long time, and condensation or mold is likely to occur in the supply air passage. There was a problem.

  This invention is made in view of the above, Comprising: Obtaining the air conditioning system which suppressed that dew condensation or mold | fungi generate | occur | produce in the air supply air path which leads to the living room different from the installation location of an indoor unit from an indoor unit. Objective.

  In order to solve the above-described problems and achieve the object, the present invention provides a heat exchanger that heats or cools air, a blower that sends out air passing through the heat exchanger, and an operation control that controls the heat exchanger and the blower. And an air supply air passage that allows the air sent from the heat exchanger by the blower to pass through a room different from the installation location of the indoor unit. The operation control unit continues the operation of the blower for a predetermined time after stopping the cooling operation for cooling the air with the heat exchanger.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that it can suppress that dew condensation or mold | fungi generate | occur | produce in an air supply air path in the air supply air path which leads from the indoor unit to the living room different from the installation location of an indoor unit.

The figure which shows the structure of the air conditioning system which concerns on Embodiment 1 of this invention. Functional block diagram of the air-conditioning system according to Embodiment 1. The flowchart which shows the flow of operation | movement of the air conditioning system which concerns on Embodiment 1. FIG. Functional block diagram of the operation control unit of the air-conditioning system according to Embodiment 2 of the present invention. The flowchart which shows the flow of operation | movement of the air conditioning system which concerns on Embodiment 2. FIG. The figure which shows the structure which implement | achieved the function of the operation control part which concerns on Embodiment 1 or Embodiment 2 with hardware. The figure which shows the structure which implement | achieved the function of the operation control part which concerns on Embodiment 1 or Embodiment 2 with software.

  Below, the air conditioning system concerning an embodiment of the invention is explained in detail based on a drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
1 is a diagram showing a configuration of an air conditioning system according to Embodiment 1 of the present invention. The air conditioning system 50 according to Embodiment 1 is a return that connects the indoor unit 1 installed inside the building 4, the heat pump units 2 a and 2 b installed outside the building 4, the living room 42, and the indoor unit 1. The air supply passage 43, the supply air passage 41 leading to the air outlet 32 provided on the floor of the living room 42, and the air duct 44 connecting the indoor unit 1 and the supply air passage 41 are provided. The indoor unit 1 includes a heat exchanger 12 connected to the heat pump units 2a and 2b through refrigerant flow paths 21a and 21b. The heat exchanger 12 forms one refrigeration cycle with the heat pump unit 2a and the refrigerant flow path 21a, and forms another refrigeration cycle with the heat pump unit 2b and the refrigerant flow path 21b. That is, the heat exchanger 12 includes two independent refrigeration cycles. The heat exchanger 12 exchanges heat between the air taken in from the living room 42 and the refrigerant circulating between the heat pump units 2a and 2b through the refrigerant flow paths 21a and 21b. The indoor unit 1 also includes a blower 11 that sends the air after heat exchange to the supply air passage 41 through the blower duct 44.

  The supply air passage 41 is a space sandwiched between the foundation 45 of the building 4 and the building material 46, and leads from the indoor unit 1 to a living room 42 different from the installation location of the indoor unit 1. The supply air passage 41 passes the air sent out from the heat exchanger 12 by the blower 11 through a living room 42 different from the installation location of the indoor unit 1. A heat insulating layer 47 is formed on the surface of the base 45. A water repellent layer 48 is formed on the surface of the building material 46. Note that a non-water-absorbing material may be applied to the building material 46 and the water-repellent layer 48 may be omitted. Examples of the building material 46 include floor materials, pillar materials, and wall materials. In FIG. 1, the air supply air passage 41 is provided in the underfloor space, but may be provided in a space behind the ceiling or a space between the inner wall and the outer wall. Further, the supply air passage 41 may be a dedicated duct installed in the building 4.

  The indoor unit 1 includes an operation control unit 13 that controls the air conditioning system 50. The room controller 31 installed in the living room 42 can communicate with the operation control unit 13.

  The air after the heat exchange sent to the supply air passage 41 by the blower 11 is supplied to the living room 42 from the air outlet 32 provided on the floor of the living room 42 in the building 4, and the living room 42 is air-conditioned. Since the air in the living room 42 that has been air conditioned returns to the indoor unit 1 through the return air passage 43, air conditioning of the living room 42 is performed while circulating air in the building 4.

  FIG. 2 is a functional block diagram of the air-conditioning system according to Embodiment 1. The room controller 31 receives a user's input operation, a room temperature detection unit 313 that detects the room temperature of the living room 42, a notification unit 311 that notifies the user by a visual or auditory method such as a character string, an image, and a sound. And an operation unit 312 which is a user interface. The notification unit 311 can be exemplified by a liquid crystal display device and a speaker. Examples of the operation unit 312 include a touch panel and a keyboard.

  The operation control unit 13 sends an operation instruction to the blower 11 and the heat exchanger 12 to control the air conditioning operation, the blower operation time measurement unit 132 that measures the operation time of the blower 11, and the cooling operation is stopped. Whether or not to perform the dehumidifying operation, the blower operation duration storage unit 133 that stores the time for which the operation of the blower 11 is continued, the heat exchanger operation time measurement unit 134 that measures the operation time of the heat exchanger 12 A dehumidifying operation determination unit 135 that determines whether or not and a blower continuous operation end determination unit 136 that determines whether or not to end the operation of the blower 11 are included. Information on the operation time of the blower 11 is sent from the blower operation time measurement unit 132 to the integrated control unit 131. Further, the integrated control unit 131 receives information on the time when the heat exchanger 12 has performed the cooling operation, the heating operation, or the dehumidifying operation from the heat exchanger operation time measuring unit 134. The integrated control unit 131 controls the air conditioning operation based on the information received from the blower operation time measurement unit 132 and the heat exchanger operation time measurement unit 134.

  The room controller 31 is communicably connected to the integrated control unit 131, and exchanges information with each other. As a specific example, information on the operation received by the operation unit 312 of the room controller 31 and information on the room temperature detected by the room temperature detection unit 313 are sent to the integrated control unit 131. Further, the control content determined by the integrated control unit 131 is sent to the room controller 31 and notified to the user from the notification unit 311.

  The blower operation continuation time storage unit 133 includes a first determination time used to determine whether or not the heat exchanger 12 has been operated longer than a certain time during the cooling operation, and the cooling operation stop. A second determination time which is a blower operation continuation time used to determine whether or not the blower 11 has been operated alone for a certain time later, and a dehumidifying operation by the heat exchanger 12 after the cooling operation is stopped, and the blower 11 is kept for a certain time. A third determination time that is a blower operation continuation time used to determine whether or not the vehicle has been operated is stored.

  The dehumidifying operation determination unit 135 measures the humidity of the air downstream of the heat exchanger 12 and the temperature of the air upstream of the heat exchanger 12 to measure the temperature of the air. The air temperature detection unit 15 before heat exchange for estimating the humidity of the air on the downstream side and the temperature of the air on the downstream side of the heat exchanger 12 are measured, and the humidity of the air on the downstream side of the heat exchanger 12 is measured. At least one of the estimated post-heat exchange air temperature detector 16 is connected. The air temperature detection unit 15 before heat exchange and the air temperature detection unit 16 after heat exchange may calculate the humidity of the air downstream from the heat exchanger 12 based on the temperature measurement result, or the temperature measurement result The humidity of the air downstream of the heat exchanger 12 may be estimated with reference to a table in which the humidity of the air downstream of the heat exchanger 12 is associated. In addition, the dehumidifying operation determination unit 135 includes the first determination condition of the dehumidifying operation used to determine whether or not the dehumidifying operation after the cooling operation is necessary, and whether the dehumidifying operation after the cooling operation is no longer necessary. The second determination condition of the dehumidifying operation used to determine whether or not is stored. The first determination condition of the dehumidifying operation is that the humidity of the air downstream from the heat exchanger 12 is higher than the first humidity, and the second determination condition of the dehumidifying operation is higher than that of the heat exchanger 12. The humidity of the downstream air is lower than the second humidity. Therefore, the first humidity is a threshold for determining whether or not the dehumidifying operation after the cooling operation is necessary, and the second humidity is a determination whether or not the dehumidifying operation after the cooling operation is not necessary. Is the threshold value. Note that the second humidity is equal to or lower than the first humidity.

  The air humidity detector 14 is installed in the supply air passage 41 and transmits information on the humidity of the air in the supply air passage 41 to the dehumidifying operation determination unit 135. The air humidity detector 14 is built in the room controller 31 or the indoor unit 1, measures the humidity of the air in the living room 42 or the return air flow path 43, and estimates the humidity of the air downstream from the heat exchanger 12. Also good. When the dehumidifying operation determining unit 135 makes a determination based on the information received from the air humidity detecting unit 14, the dehumidifying operation determining unit 135 dehumidifies when the humidity of the air in the supply air passage 41 is higher than the first humidity. It determines with satisfy | filling the 1st criteria of a driving | operation, and when it becomes lower than 2nd humidity, it determines with satisfy | filling the 2nd criteria of a dehumidification driving | operation.

  The humidity downstream of the heat exchanger 12 estimated by the pre-heat exchange air temperature detection unit 15 is higher than the first humidity when the temperature of the air before heat exchange is higher than the first temperature. When the temperature is lower than the second temperature, the value is lower than the second humidity. Therefore, when the dehumidification operation determination unit 135 determines based on the humidity of the air downstream from the heat exchanger 12 estimated by the pre-heat exchange air temperature detection unit 15, the dehumidification operation determination unit 135 When the temperature of the air upstream is higher than the first temperature, it is determined that the first determination condition for the dehumidifying operation is satisfied, and when the temperature is lower than the second temperature, the second determination for the dehumidifying operation is performed. It is determined that the condition is satisfied. That is, the first determination condition of the dehumidifying operation stored in the dehumidifying operation determining unit 135 is the first temperature, and the second determination condition of the dehumidifying operation is the second temperature. Therefore, the first temperature is a threshold for determining whether or not the dehumidifying operation after the cooling operation is necessary, and the second temperature is a determination whether or not the dehumidifying operation after the cooling operation is no longer necessary. Is the threshold value. The pre-heat exchange air temperature detector 15 is provided in the indoor unit 1 on the upstream side of the heat exchanger 12. The room temperature detector 313 of the room controller 31 may also serve as the pre-heat exchange air temperature detector 15.

  When the temperature of the air downstream of the heat exchanger 12 estimated by the post-heat exchange air temperature detection unit 16 is lower than the third temperature, When the temperature is higher than the first humidity and is higher than the fourth temperature, the value is lower than the second humidity. Therefore, when the dehumidification operation determination unit 135 makes a determination based on the humidity of the air downstream of the heat exchanger 12 estimated by the post-heat exchange air temperature detection unit 16, the dehumidification operation determination unit 135 When the temperature of the downstream air is lower than the third temperature, it is determined that the first determination condition for the dehumidifying operation is satisfied, and when the temperature is higher than the fourth temperature, the second determination for the dehumidifying operation is performed. It is determined that the condition is satisfied. That is, the first determination condition for the dehumidifying operation stored in the dehumidifying operation determining unit 135 is the third temperature, and the second determination condition for the dehumidifying operation is the fourth temperature. Therefore, the third temperature is a threshold for determining whether or not the dehumidifying operation after the cooling operation is necessary, and the fourth temperature is a determination whether or not the dehumidifying operation after the cooling operation is no longer necessary. Is the threshold value.

  Note that the dehumidifying operation determination unit 135 determines whether the air humidity detection unit 14 determines whether the first determination condition for the dehumidifying operation is satisfied and whether the second determination condition for the dehumidifying operation is satisfied. The humidity of the air downstream from the measured heat exchanger 12 and the air humidity downstream of the heat exchanger 12 estimated by the pre-heat exchange air temperature detection unit 15 and the post-heat exchange air temperature detection unit 16 estimated. Different air out of the heat exchanger 12 may be used.

  The first determination condition for the dehumidifying operation is that the relative humidity of the air downstream of the heat exchanger 12 is 90% or more, and the relative humidity of the air downstream of the heat exchanger 12 is less than 70%. By setting this as the second determination condition of the dehumidifying operation, it is possible to suppress the inside of the air supply air passage 41 from being in a high humidity state.

  When performing the dehumidifying operation, one of the two heat pump units 2a and 2b performs the heating operation, and the other performs the cooling operation, thereby cooling the air with the heat exchanger 12 and dehumidifying it, and then heating the air again. Reheating dehumidification operation is performed and it can control that the temperature of living room 42 falls.

  FIG. 3 is a flowchart showing an operation flow of the air-conditioning system according to Embodiment 1. In step S <b> 1, when the integrated control unit 131 stops the cooling operation, the blower operation time measurement unit 132 resets the operation time of the blower 11. In step S <b> 2, the integrated control unit 131 performs the first determination on the operation time of the heat exchanger 12 during the cooling operation based on the information on the operation time of the heat exchanger 12 received from the heat exchanger operation time measurement unit 134. Determine if it was longer than the time. If the operation time of the heat exchanger 12 during the cooling operation is longer than the first determination time, the result becomes Yes in step S2 and the process proceeds to step S3. If the operation time of the heat exchanger 12 during the cooling operation is equal to or shorter than the first determination time, No is determined in step S2 and the process proceeds to step S9.

  In step S3, the dehumidification operation determination unit 135 satisfies the first determination condition of the dehumidification operation and determines whether the dehumidification operation is necessary. If the first determination condition for the dehumidifying operation is satisfied, the determination in Step S3 is Yes, and the process proceeds to Step S6. If the first determination condition for the dehumidifying operation is not satisfied, No is determined in step S3, and the process proceeds to step S4.

  In step S <b> 4, the integrated control unit 131 continues the operation of the blower 11. In step S5, the integrated control unit 131 determines whether the operation time of the blower 11 after stopping the cooling operation is longer than the second determination time based on the information on the operation time of the blower 11 received from the blower operation time measuring unit 132. Judge whether or not. If the operation time of the blower 11 after the cooling operation is stopped is longer than the second determination time, Yes in step S5, and the process proceeds to step S9. If the operation time of the blower 11 after the cooling operation is stopped is equal to or shorter than the second determination time, No is returned in step S5, and the process returns to step S4.

  In step S6, the integrated control unit 131 starts dehumidification by the heat exchanger 12, continues operation of the blower 11, and performs dehumidification operation. In step S <b> 7, the dehumidifying operation determination unit 135 determines whether or not the dehumidifying operation is unnecessary because the second determination condition of the dehumidifying operation is satisfied. If the second determination condition for the dehumidifying operation is satisfied, Yes in step S7 and the process proceeds to step S9. If the second determination condition for the dehumidifying operation is not satisfied, No in step S7, and the process proceeds to step S8.

  In step S <b> 8, based on the information on the operation time of the blower 11 received from the blower operation time measurement unit 132, the integrated control unit 131 is longer than the third determination time after the cooling operation is stopped. Judge whether or not. If the operation time of the blower 11 after the cooling operation is stopped is longer than the third determination time, Yes is determined in step S8, and the process proceeds to step S9. If the operation time of the blower 11 after the cooling operation is stopped is equal to or shorter than the third determination time, No is returned in step S8, and the process returns to step S7.

  In step S <b> 9, the integrated control unit 131 stops the operation of the blower 11 and the heat exchanger 12. In step S <b> 10, the blower operation time measuring unit 132 resets the operation time of the blower 11. Further, the heat exchanger operation time measuring unit 134 resets the operation time of the heat exchanger 12.

  As described above, the air-conditioning system 50 according to Embodiment 1 continues the operation of the blower 11 after the cooling operation is completed, and the dehumidifying operation by the heat exchanger 12 is performed when the supply air passage 41 is in a high humidity. Therefore, it is possible to shorten the time until the state where the air supply air passage 41 is in a high humidity state is eliminated after the cooling operation is completed. Therefore, the air conditioning system 50 according to Embodiment 1 can prevent the occurrence of condensation and suppress the occurrence of mold. In addition, the air conditioning system 50 according to Embodiment 1 can reduce power consumption by performing the dehumidifying operation only when the air supply air passage 41 is in high humidity. Moreover, since the air conditioning system 50 which concerns on Embodiment 1 stops the air blower 11 if the state where the inside of the supply air path 41 becomes high humidity is eliminated, it can aim at reduction of power consumption.

  The blower operation duration storage unit 133 may store a plurality of second determination times and third determination times having a positive correlation with the length of time during which the cooling operation is performed. By storing a plurality of second determination times and third determination times in the blower operation duration storage unit 133, the time for which the blower 11 is continuously operated can be changed according to the length of the cooling operation. Thus, power consumption can be reduced. In addition, since the air conditioning system 50 according to the first embodiment includes the water repellent layer 48 on the surface of the building material 46, the deterioration of the building material 46 can be suppressed and the generation of mold in the supply air passage 41 can be suppressed.

Embodiment 2. FIG.
FIG. 4 is a functional block diagram of the operation control unit of the air-conditioning system according to Embodiment 2 of the present invention. The operation control unit 13 of the air conditioning system 50 according to Embodiment 2 does not include the blower operation time measurement unit 132, the blower operation duration storage unit 133, the dehumidification operation determination unit 135, and the blower continuous operation end determination unit 136. In addition, the operation control unit 13 of the air-conditioning system 50 according to Embodiment 2 includes a maintenance determination unit 137 that determines whether maintenance is necessary. Others are the same as those of the operation control unit 13 of the air-conditioning system 50 according to Embodiment 1.

  FIG. 5 is a flowchart showing an operation flow of the air-conditioning system according to Embodiment 2. In step S11, the integrated control unit 131 stops the cooling operation. In step S <b> 12, the maintenance determination unit 137 determines whether the accumulated time of the cooling operation of the heat exchanger 12 stored in the integrated control unit 131 exceeds the time threshold. If the integrated time of the cooling operation of the heat exchanger 12 exceeds the time threshold value, Yes is determined in step S12 and the process proceeds to step S13. If the integrated time of the cooling operation of the heat exchanger 12 does not exceed the time threshold, No is determined in step S12 and the process proceeds to step S14.

  In step S13, the integrated control unit 131 outputs information indicating that maintenance is necessary from the notification unit 311 and notifies the user. The information notified to the user by the notification unit 311 prompts inspection or cleaning of the air supply air passage 41, and includes a method for displaying text on a display, a method for notifying by voice, and a method for displaying a specific error code. It can be illustrated. Also, a contract is made with a house management company, a house maintenance company, or a maintenance company of the air conditioning system 50, the maintenance information is directly notified to the management company or the maintenance company, and the maintenance time is announced to the user from the management company or the maintenance company. You may do it.

  In step S14, the integrated control unit 131 updates and stores the accumulated cooling operation time of the heat exchanger 12.

  In step S <b> 15, the integrated control unit 131 stops the operation of the blower 11 and the heat exchanger 12.

  After performing appropriate inspection and cleaning by a management company, a maintenance company, or a user, the maintenance time can be continuously notified to the user at an appropriate timing by resetting the accumulated time of the cooling operation time. When regularly informing the maintenance time, the integrated time of the cooling operation for determining the maintenance time may be the same integrated time every time, or the integrated time until the next maintenance increases as the number of maintenance information notifications increases. May be shortened.

  In the above description, whether or not the maintenance is necessary is determined based on whether or not the accumulated time of the cooling operation time of the heat exchanger 12 exceeds the threshold value, but the post-heat exchange air temperature detection unit 16 as in the first embodiment. The time when the temperature of the air downstream of the heat exchanger 12 detected by the air temperature detection unit 16 after heat exchange during the cooling operation exceeds the threshold is integrated, and the integrated time is determined for maintenance. Maintenance information may be notified when the standard is exceeded. Moreover, it is set as the structure provided with the air humidity detection part 14 similarly to Embodiment 1, the humidity of the air downstream from the heat exchanger 12 is detected in the air humidity detection part 14 during air_conditionaing | cooling operation, and a heat exchanger The time when the humidity of the air downstream of 12 exceeds the threshold value may be integrated, and the maintenance information may be notified when the integrated time exceeds the maintenance criterion.

  In the above description, in the air conditioning system 50 according to the second embodiment, the operation control unit 13 includes the blower operation time measurement unit 132, the blower operation duration storage unit 133, the dehumidifying operation determination unit 135, and the blower continuous operation end determination unit. 136 is not provided, but a configuration in which a maintenance determination unit 137 is added to the operation control unit 13 of the air-conditioning system 50 according to Embodiment 1 may be employed.

  The function of the operation control unit 13 of the first embodiment or the second embodiment is realized by a processing circuit. That is, the operation control unit 13 performs a process for continuing the operation of the blower 11 for a certain time after stopping the cooling operation for cooling the air by the heat exchanger 12, and the maintenance determination unit 137 that the operation time of the cooling operation has exceeded a threshold value. Is provided with a processing circuit that performs processing for notifying the user of information prompting maintenance of the air supply air passage 41 from the notification unit 311. The processing circuit may be dedicated hardware or an arithmetic device that executes a program stored in the storage device.

  If the processing circuit is dedicated hardware, the processing circuit may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit, a field programmable gate array, or a combination thereof Is applicable. FIG. 6 is a diagram illustrating a configuration in which the function of the operation control unit according to the first embodiment or the second embodiment is realized by hardware. The processing circuit 29 includes a process for continuing the operation of the blower 11 for a certain time after stopping the cooling operation for cooling the air by the heat exchanger 12, and the maintenance determining unit 137 that the operation time of the cooling operation has exceeded a threshold value. When the determination is made, a logic circuit 29 a that implements a process for notifying the user of information for prompting maintenance of the air supply air passage 41 from the notification unit 311 is incorporated.

  When the processing circuit 29 is an arithmetic unit, a maintenance determination is made that the process of continuing the operation of the blower 11 for a certain time after the cooling operation for cooling the air by the heat exchanger 12 is stopped and the operation time of the cooling operation has exceeded a threshold value When the unit 137 determines, the process of notifying the user of information prompting the maintenance of the supply air passage 41 from the notification unit 311 is realized by software, firmware, or a combination of software and firmware.

  FIG. 7 is a diagram illustrating a configuration in which the function of the operation control unit according to the first or second embodiment is realized by software. The processing circuit 29 includes an arithmetic device 291 that executes the program 29b, a random access memory 292 that the arithmetic device 291 uses as a work area, and a storage device 293 that stores the program 29b. The arithmetic unit 291 develops and executes the program 29b stored in the storage device 293 on the random access memory 292, thereby stopping the cooling operation for cooling the air by the heat exchanger 12, and then the blower 11 for a certain period of time. When the maintenance determination unit 137 determines that the operation time of the cooling operation has exceeded the threshold, the notification unit 311 notifies the user of information that prompts maintenance of the supply air passage 41. Is done. Software or firmware is written in a program language and stored in the storage device 293. The arithmetic unit 291 can be exemplified by a central processing unit, but is not limited thereto.

  The processing circuit 29 implements each process by reading and executing the program 29b stored in the storage device 293. That is, the operation control unit 13, when executed by the processing circuit 29, continues the operation of the blower 11 for a certain time after stopping the cooling operation for cooling the air by the heat exchanger 12, and the cooling operation When the maintenance determination unit 137 determines that the operation time has exceeded the threshold value, the program 29b that results in the step of notifying the user of information that prompts maintenance of the supply air passage 41 from the notification unit 311 is stored. A storage device 293 is provided. The program 29b can also be said to cause a computer to execute the above procedures and methods.

  The processing circuit 29 may be partially realized by dedicated hardware and partially realized by software or firmware.

  As described above, the processing circuit 29 can realize the above-described functions by hardware, software, firmware, or a combination thereof.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  DESCRIPTION OF SYMBOLS 1 Indoor unit, 2a, 2b Heat pump unit, 4 Building, 11 Blower, 12 Heat exchanger, 13 Operation control part, 14 Air humidity detection part, 15 Air temperature detection part before heat exchange, 16 Air temperature detection part after heat exchange, 21a, 21b Refrigerant flow path, 29 processing circuit, 29a logic circuit, 29b program, 31 room controller, 32 outlet, 41 supply air path, 42 living room, 43 return air air path, 44 air duct, 45 foundation, 46 building material, 47 Thermal insulation layer, 48 water repellent layer, 50 air conditioning system, 131 integrated control unit, 132 blower operation time measurement unit, 133 blower operation duration storage unit, 134 heat exchanger operation time measurement unit, 135 dehumidification operation determination unit, 136 blower Continuous operation end determination unit, 137 maintenance determination unit, 291 arithmetic unit, 292 random access Mori, 293 storage device, 311 notification unit, 312 operation unit, 313 at room temperature detecting unit.

Claims (10)

An indoor unit comprising: a heat exchanger that heats or cools air; a blower that sends out air passing through the heat exchanger; and an operation control unit that controls the heat exchanger and the blower;
An air supply air passage through which air sent out from the heat exchanger by the blower passes through a living room different from the installation location of the indoor unit,
The said operation control part continues the driving | operation of the said air blower for a fixed time after stopping the cooling operation which cools air with the said heat exchanger, The air conditioning system characterized by the above-mentioned. The operation controller is
A heat exchanger operating time measuring unit for measuring the time of performing the cooling operation,
A blower operation duration storage unit that stores a blower operation duration time that is a time to continue the operation of the blower after stopping the cooling operation;
2. The air conditioning system according to claim 1, wherein the blower operation duration storage unit stores a plurality of blower operation durations having a positive correlation with a length of time during which the cooling operation is performed. The operation controller is
An air humidity detector that measures the humidity of the air downstream from the heat exchanger;
A dehumidifying operation determination unit that determines whether or not it is necessary to perform a dehumidifying operation while continuing the operation of the blower,
The dehumidifying operation determination unit determines that the dehumidifying operation is necessary when the humidity of the air downstream of the heat exchanger is higher than a threshold value,
The operation control unit, when the dehumidifying operation determination unit determines that a dehumidifying operation is necessary, uses the dehumidifying operation for reducing the humidity of the air while continuing the operation of the blower. Item 3. The air conditioning system according to Item 1 or 2. The operation controller is
An air temperature detector before heat exchange that measures the temperature of the air upstream of the heat exchanger;
A dehumidifying operation determination unit that determines whether or not it is necessary to perform a dehumidifying operation while continuing the operation of the blower,
The dehumidifying operation determination unit determines that the dehumidifying operation is necessary when the temperature of the air upstream of the heat exchanger is higher than a threshold value,
The operation control unit, when the dehumidifying operation determination unit determines that a dehumidifying operation is necessary, uses the dehumidifying operation for reducing the humidity of the air while continuing the operation of the blower. Item 3. The air conditioning system according to Item 1 or 2. The operation controller is
A post-heat exchange air temperature detector that measures the temperature of the air downstream from the heat exchanger;
A dehumidifying operation determination unit that determines whether or not it is necessary to perform a dehumidifying operation while continuing the operation of the blower,
The dehumidifying operation determination unit determines that the dehumidifying operation is necessary when the temperature of the air downstream of the heat exchanger is lower than a threshold value,
The operation control unit, when the dehumidifying operation determination unit determines that a dehumidifying operation is necessary, uses the dehumidifying operation for reducing the humidity of the air while continuing the operation of the blower. Item 3. The air conditioning system according to Item 1 or 2. The operation control unit includes a blower continuous operation end determination unit that determines whether or not to end the operation of the blower that has been continued.
The blower continuous operation end determination unit stops the blower when the dehumidification operation determination unit determines that it is not necessary to perform the dehumidification operation after the combined use of the dehumidification operation. The air conditioning system according to any one of 1 to 5. The heat exchanger includes two independent refrigeration cycles,
7. The heat exchanger performs reheat dehumidification by cooling the air on one side of the refrigeration cycle and heating the air on the other side of the refrigeration cycle during the dehumidifying operation. The air conditioning system according to any one of the above. An indoor unit comprising a heat exchanger that heats or cools the air to adjust the temperature, and a blower that sends out air passing through the heat exchanger;
A supply air passage for passing air sent out from the heat exchanger by the blower through a living room different from the installation location of the indoor unit,
A heat exchanger operation time measuring unit for measuring the operation time of the cooling operation by the heat exchanger;
A maintenance determination unit that determines whether or not the operation time of the cooling operation by the heat exchanger exceeds a threshold;
An informing unit for informing information,
When the maintenance determination unit determines that the operation time of the cooling operation has exceeded a threshold value, the notification unit notifies the user of information that prompts maintenance of the supply air passage. The air supply path is
The foundation of the building where the room is located;
It is a space sandwiched between the building materials of the building,
The air conditioning system according to any one of claims 1 to 8, further comprising a heat insulating layer formed on the surface of the foundation and a water repellent layer formed on the surface of the building material. The air supply path is
The foundation of the building where the room is located;
It is a space sandwiched between the building materials of the building,
Comprising a heat insulating layer formed on the surface of the foundation;
The air conditioning system according to any one of claims 1 to 8, wherein the building material is formed of a non-water-absorbing material.

Images