WO2020245986A1

WO2020245986A1 - Air conditioning ventilation system, device for controlling air conditioning ventilation system, and method for controlling air conditioning ventilation system

Info

Publication number: WO2020245986A1
Application number: PCT/JP2019/022566
Authority: WO
Inventors: 齊藤　信
Original assignee: 三菱電機株式会社
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-12-10
Also published as: JP7195423B2; JPWO2020245986A1

Abstract

The present invention provides an air conditioning ventilation system equipped with a ventilation device, an air conditioner, one or more blowers installed near an inner wall, surface temperature detectors disposed at a plurality of locations on the inner wall, an indoor dew point temperature acquisition unit, and a control device. The control device has: a behavior storage unit for storing the change over time of various types of detectors including the surface temperature detectors; a condensation risk assessment unit for assessing, on the basis of the values detected by the plurality of surface temperature detectors and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit, whether a condensation occurrence risk has arisen; a condensation factor estimation unit for estimating a factor for an increase in the condensation occurrence risk; and a selection unit for selecting a corresponding condensation avoidance operation from among a plurality of condensation avoidance operations set in accordance with the factor for an increase in the condensation occurrence risk.

Description

Air-conditioning ventilation system, air-conditioning ventilation system control device and air-conditioning ventilation system control method

The present invention relates to an air-conditioning ventilation system including a ventilation device, an air conditioner, and a blower, a control device for the air-conditioning ventilation system, and a control method for the air-conditioning ventilation system.

In recent years, due to the progress of high airtightness and high heat insulation of the housing frame, it has become common to perform mechanical ventilation continuously for 24 hours. As a result, when there is no moisture generation or dehumidification function indoors, the absolute humidity indoors becomes equal to the humidity of the outside air. Therefore, in winter, the relative humidity in the room may be 20% or less due to heating. However, when humidification is performed in combination with air heating, dew condensation may occur on a low temperature surface such as a window or the inside of an outer wall. There is concern that the occurrence of dew condensation will adversely affect the life of the frame or hygiene.

Recently, a humidity control method has been considered in which temperature sensors are installed at a plurality of places where a low temperature surface may be formed on the indoor side, and a control target is set at the humidity before the start of dew condensation. As a result, both the adverse effect of excessive drying and the adverse effect of dew condensation are suppressed. However, if a low temperature surface is formed on either side due to poor heat insulation or the like, excessive drying cannot be avoided.

In order to avoid such a problem, an air-conditioning control system has been proposed that allows the occurrence of dew condensation in a part of the area according to the dew condensation permission information instructed by the user and maintains an appropriate indoor humidity control target (for example, a patent). Reference 1).

In addition, an air conditioner for vehicles that switches dew condensation avoidance operation such as an increase in ventilation volume or an increase in total air volume to a low temperature surface depending on the magnitude or margin of the possibility of dew condensation has been proposed (see, for example, Patent Document 2). ..

JP-A-2017-96511 Japanese Unexamined Patent Publication No. 61-193921

However, in the technique of Patent Document 1 above, there is a concern about contamination by water droplets generated in an area where dew condensation is allowed. In addition, it is necessary for the user to determine whether or not the dew condensation is allowed due to an increase in the risk of dew condensation that occurs temporarily, which causes troublesome work for the user.

Further, in the technique of Patent Document 2 above, the dew condensation avoidance operation is performed without specifying the cause of the increase in the dew condensation risk. For this reason, there is a possibility that the indoor comfort may be deteriorated due to the avoidance operation which is originally unnecessary, or the humidity may be lowered which cannot be recovered.

The present invention is for solving the above problems, and controls an air-conditioning ventilation system and an air-conditioning ventilation system in which dew condensation avoidance operation for avoiding dew condensation is appropriately carried out and dew condensation can be avoided while ensuring indoor comfort. It is an object of the present invention to provide a control method of an apparatus and an air conditioning ventilation system.

The air-conditioning ventilation system according to the present invention includes a ventilation device, an air conditioner, a blower, a plurality of surface temperature detection units arranged at a plurality of locations on the inner wall, an indoor dew point temperature acquisition unit, and a control device. The control device is composed of a behavior storage unit that stores time changes of detection values of various detection units including the plurality of surface temperature detection units, each detection value of the plurality of surface temperature detection units, and the indoor dew point temperature acquisition unit. The dew condensation risk determination unit that determines whether or not the dew condensation occurrence risk has occurred based on the acquired indoor dew point temperature, the dew condensation factor estimation unit that estimates the dew condensation occurrence risk increase factor, and the dew condensation occurrence risk increase factor It has a selection unit for selecting the corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set accordingly.

The control device of the air conditioning ventilation system according to the present invention ventilates according to the detection results of a plurality of surface temperature detection units arranged at a plurality of locations on the inner wall and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit. A control device for an air-conditioning ventilation system that controls an apparatus, an air conditioner, and a blower, and a behavior storage unit that stores time changes in detection values of various detection units including the plurality of surface temperature detection units, and the above-mentioned A dew condensation risk determination unit that determines whether or not a dew condensation risk has occurred based on each detection value of a plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit, and an increase in the dew condensation risk. It has a dew condensation factor estimation unit that estimates the factors, and a selection unit that selects the corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set according to the factors that increase the dew condensation occurrence risk.

The control method of the air conditioning ventilation system according to the present invention ventilates according to the detection results of a plurality of surface temperature detecting units arranged at a plurality of locations on the inner wall and the indoor dew point temperature acquired by the indoor dew point temperature acquiring unit. A control method for an air-conditioning ventilation system that controls an apparatus, an air conditioner, and a blower, the behavior storage step of storing the time change of the detection value of various detection units including the plurality of surface temperature detection units, and the above-mentioned. A dew condensation risk determination step for determining whether or not a dew condensation occurrence risk has occurred based on each detection value of a plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit, and an increase in the dew condensation occurrence risk. It includes a dew condensation factor estimation step for estimating a factor, and a selection step for selecting a corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set according to the factor for increasing the dew condensation occurrence risk.

According to the air-conditioning ventilation system, the control device of the air-conditioning ventilation system, and the control method of the air-conditioning ventilation system according to the present invention, the control unit responds from a plurality of dew condensation avoidance operations set according to factors that increase the risk of dew condensation. Select the dew condensation avoidance operation. As a result, the optimum dew condensation avoidance operation can be carried out according to the factors that increase the risk of dew condensation. Therefore, the dew condensation avoidance operation for avoiding the dew condensation is appropriately carried out, and the dew condensation can be avoided while ensuring the indoor comfort.

It is a schematic block diagram which shows the air-conditioning ventilation system which concerns on Embodiment 1. FIG. It is a schematic block diagram which shows the ventilation apparatus which concerns on Embodiment 1. FIG. It is a functional block diagram which shows the air-conditioning ventilation system which concerns on Embodiment 1. FIG. It is a hardware block diagram which shows the control device which concerns on Embodiment 1. FIG. It is a time series graph which shows the environmental information which the control device which concerns on Embodiment 1 has. It is a main flowchart which shows the control of the air conditioning ventilation system which concerns on Embodiment 1. It is a sub-flow chart which shows the control of the air-conditioning ventilation system which concerns on Embodiment 1.

The embodiments are described below based on the drawings. In each figure, those having the same reference numerals are the same or equivalent thereof, and they are common in the entire text of the specification. Further, in the cross-sectional view, hatching is appropriately omitted in view of visibility. Furthermore, the forms of the components shown in the full text of the specification are merely examples and are not limited to these descriptions.

Embodiment 1.
<Configuration of air conditioning ventilation system>
FIG. 1 is a schematic configuration diagram showing an air conditioning ventilation system 100 according to the first embodiment. As shown in FIG. 1, the air conditioning ventilation system 100 performs air conditioning, ventilation, and ventilation for the target room 1. The target room 1 is an outer wall in which two surfaces, a south surface with a bay window and a west surface with a bay window, are in contact with the outside world. The target room 1 is provided with an air supply port 2 for introducing fresh outside air into the ceiling and an exhaust port 3 for exhausting indoor air.

The air conditioning ventilation system 100 includes a plurality of surface temperature detection units 4, an indoor temperature detection unit 5, and an indoor humidity detection unit 6. The plurality of surface temperature detecting units 4 are arranged at a plurality of locations on the inner wall near the floor surface, which is assumed to easily form a low temperature surface. The room temperature detection unit 5 detects the room temperature. The indoor humidity detection unit 6 detects the indoor humidity. The plurality of surface temperature detection units 4, the indoor temperature detection unit 5, and the indoor humidity detection unit 6 perform detection at predetermined time intervals, and remotely transmit the detection information to the control device 7.

The air conditioning ventilation system 100 includes a ventilation device 8, an air conditioner 9, a first blower 10, and a second blower 11. The ventilation device 8 is arranged in the space behind the ceiling, and ventilates the indoor air of the target room 1 and the outside air of the outside world continuously for 24 hours. The ventilation device 8 controls the amount of air flowing through each of the air supply port 2 and the exhaust port 3. The air conditioner 9 cools or heats the indoor air of the target room 1. The air conditioner 9 is a heat pump device or the like that utilizes the outside air by using a refrigerant circuit. The air conditioner 9 is equipped with an indoor temperature detection unit 5 and an indoor humidity detection unit 6. The first blower 10 and the second blower 11 generate a flow for agitating the indoor air in the target chamber 1. The first blower 10 and the second blower 11 are arranged at positions where the air near the inner wall can be easily agitated. The number of blowers may be 1 or more. The ventilation device 8, the air conditioner 9, the first blower 10 and the second blower 11 are remotely controlled by the control device 7.

The air conditioning ventilation system 100 includes a control device 7. The control device 7 is a centralized control device for the air conditioning ventilation system 100. The control device 7 remotely receives the detection information of the plurality of surface temperature detection units 4, the indoor temperature detection unit 5, and the indoor humidity detection unit 6. The control device 7 remotely controls the ventilation device 8, the air conditioner 9, the first blower 10, and the second blower 11, respectively. The control device 7 has a touch panel unit 7a that displays environmental information, operation information, notification information, warning information, and the like to the user and can be operated by the user.

<Structure of ventilation device 8>
FIG. 2 is a schematic configuration diagram showing the ventilation device 8 according to the first embodiment. As shown in FIG. 2, the ventilation device 8 includes an outside air temperature detecting unit 12, a first ventilation blower 13, a second ventilation blower 14, and a heat exchanger 15.

The outside air temperature detection unit 12 is arranged in the air supply flow path from the outside to the air supply port 2, and detects the fresh outside air temperature taken into the target chamber 1. The outside air temperature detection unit 12 performs detection at predetermined time intervals and remotely transmits the detection information to the control device 7.

The first ventilation blower 13 is arranged in the air supply flow path from the outside to the air supply port 2, and blows the air supply SA taken in from the fresh outside air taken into the target room 1. The first ventilation blower 13 controls the amount of air blown by the air supply SA by a control command from the control device 7.

The second ventilation blower 14 is arranged in the exhaust flow path from the exhaust port 3 to the outside, and blows the exhaust EA discharged to the outside. The second ventilation blower 14 controls the amount of exhaust air blown by a control command from the control device 7.

The heat exchanger 15 exchanges heat between the outside air OA taken into the target room 1 from the outside and the exhaust RA discharged to the outside from the target room 1. The outside air OA taken into the target chamber 1 recovers the heat in the target chamber 1 by the heat exchanger 15, reaches a temperature close to the exhaust RA, and is supplied to the target chamber 1 as an air supply SA. The exhaust EA after heat exchange becomes low temperature and is discharged to the outside. The action of recovering the heat of the supply air SA by heat exchange can suppress an increase in the load of the air conditioner 9 due to ventilation.

<Functional configuration of air conditioning ventilation system 100>
FIG. 3 is a functional block diagram showing the air conditioning ventilation system 100 according to the first embodiment. As shown in FIG. 3, the control device 7 has various detections transmitted at predetermined time intervals by each of the plurality of surface temperature detection units 4, the outside air temperature detection unit 12, the indoor temperature detection unit 5, and the indoor humidity detection unit 6. Receive information. Further, the indoor temperature detection unit 5 and the indoor humidity detection unit 6 constitute an indoor dew point temperature acquisition unit 17 that acquires the indoor dew point temperature. The control device 7 transmits control commands according to calculation results based on various detection information to the ventilation device 8, the air conditioner 9, the first blower 10 and the second blower 11, respectively, and the ventilation device 8, the air conditioner 9, and the second The first blower 10 and the second blower 11 are controlled, respectively.

The control device 7 includes a behavior storage unit 71, a dew condensation risk determination unit 72, a dew condensation factor estimation unit 73, a selection unit 74, a continuation unit 75, a notification unit 76, a dew condensation occurrence determination unit 77, and a warning unit 78. And a dew condensation removing unit 79.

The behavior storage unit 71 stores the time change of each detection value of various detection units such as the plurality of surface temperature detection units 4, the room temperature detection unit 5, the room humidity detection unit 6, and the outside air temperature detection unit 12.

The dew condensation risk determination unit 72 determines whether or not a dew condensation risk has occurred based on each detection value of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17. The dew condensation risk determination unit 72 calculates the indoor dew point temperature based on the detected values of the indoor temperature detection unit 5 and the indoor humidity detection unit 6. The process of calculating the indoor dew point temperature is a process of acquiring the indoor dew point temperature by the indoor dew point temperature acquisition unit 17. The indoor dew point temperature may be obtained by another well-known method using, for example, a dew point thermometer. The dew condensation risk determination unit 72 calculates the smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units 4 and the indoor dew point temperature. The dew condensation risk determination unit 72 determines that a dew condensation risk has occurred when the minimum difference is less than the first threshold value of 2 ° C. The dew condensation risk determination unit 72 determines that there is no dew condensation risk when the minimum difference does not satisfy the first threshold value of less than 2 ° C.

The dew condensation factor estimation unit 73 estimates the factors that increase the risk of dew condensation. The dew condensation factor estimation unit 73 first increases the case where the indoor dew point temperature based on the time change of each detection value of the time-changed indoor temperature detection unit 5 and the indoor humidity detection unit 6 stored in the behavior storage unit 71 tends to increase. Presumed to be a factor. The dew condensation factor estimation unit 73 estimates that the case where all the detected values of the time-varying surface temperature detection units 4 stored in the behavior storage unit 71 decrease is the second increasing factor.

The selection unit 74 selects one or more corresponding dew condensation avoidance operations from a plurality of dew condensation avoidance operations according to factors that increase the risk of dew condensation. The selection unit 74 includes a first dew condensation avoidance operation in which the ventilation volume is increased by the ventilation device 8, a second dew condensation avoidance operation in which the air volume of the air conditioner 9, the first blower 10 and the second blower 11 is increased, and the air conditioner 9. Select one or more of the third dew condensation avoidance operation that raises the set temperature and the corresponding dew condensation avoidance operation according to the factors that increase the risk of dew condensation.

When the selection unit 74 selects the corresponding dew condensation avoidance operation, the continuation unit 75 continues the corresponding dew condensation avoidance operation until the dew condensation risk determination unit 72 determines that there is no dew condensation risk.

The notification unit 76 notifies the user that the dew condensation risk determination unit 72 has determined that the dew condensation risk has occurred. The notification unit 76 causes, for example, the touch panel unit 7a to display the notification information.

The dew condensation occurrence determination unit 77 determines whether or not dew condensation has occurred. The dew condensation generation determination unit 77 calculates the indoor dew point temperature based on the detected values of the indoor temperature detection unit 5 and the indoor humidity detection unit 6. The dew condensation generation determination unit 77 calculates the smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units 4 and the indoor dew point temperature. The dew condensation generation determination unit 77 determines that dew condensation has occurred when the minimum difference is less than the second threshold value of 0 ° C.

The warning unit 78 warns the user of the determination result that dew condensation has occurred by the dew condensation occurrence determination unit 77. The warning unit 78 causes, for example, the touch panel unit 7a to display warning information.

When the dew condensation removing unit 79 determines that dew condensation has occurred by the dew condensation generation determining unit 77, the dew condensation removing operation is performed by the ventilation device 8 to increase the ventilation volume.

<Configuration of control device 7>
FIG. 4 is a hardware configuration diagram showing the control device 7 according to the first embodiment. The control device 7 is responsible for controlling the ventilation device 8, the air conditioner 9, the first blower 10, the second blower 11, and the like. As shown in FIG. 4, the control device 7 is a processing circuit having a microcomputer including a memory such as a CPU, ROM and RAM, and an input / output device such as an I / O port. Various functional units of the control device 7 are configured in a memory or the like.

<Status of environmental information>
FIG. 5 is a time series graph showing the environmental information possessed by the control device 7 according to the first embodiment. Here, in the air conditioning ventilation system 100, basically, the ventilation device 8 operates continuously for 24 hours, and the air conditioner 9 operates according to the operation instruction of the user.

The control device 7 transmits a control command as an operation instruction to the ventilation device 8, the air conditioner 9, the first blower 10 and the second blower 11. The control device 7 receives and stores the indoor temperature information and the indoor humidity information of the air conditioner 9, and the wall surface temperature information of a plurality of surface temperature detecting units 4 for detecting the wall surface temperature. That is, the control device 7 acquires the temperature information as shown in FIG. 5 and holds it for a certain period of time.

FIG. 5 shows an example of indoor environment information in winter. As shown in FIG. 5, the temperature of the room is adjusted to around 20 ° C. by the air conditioner 9. On the other hand, the outside air temperature is around 0 ° C. In such a case, the wall surface temperature group becomes a temperature between the indoor temperature and the outside air temperature. Here, the target room 1 is assumed to be a highly insulated house. Therefore, the wall surface temperature group becomes 15 ° C. to 16 ° C., which is close to the room temperature. The difference A between the indoor temperature and the wall surface temperature is determined by the convective heat transfer action of the indoor side wall surface. The difference B between the outside air temperature and the wall surface temperature is mainly determined by the heat insulating property of the outer wall members. The ratio of difference A and difference B is almost unchanged under various conditions.

By the way, the indoor dew point temperature is maintained at about 10 ° C due to the generation of moisture or humidification in the room. Generally, when the indoor temperature is about 20 ° C., if the indoor dew point temperature is 8 ° C. or higher, the adverse effect due to excessive drying can be avoided.

As described above, in the target room 1 having high heat insulating properties, the wall surface temperature is lower than the indoor dew point temperature, that is, dew condensation does not occur. However, for some reason, the wall surface temperature and the indoor dew point temperature may approach each other, increasing the risk of dew condensation.

When the difference ΔTmin between the wall surface temperature and the indoor dew point temperature becomes small, the indoor dew point temperature may rise or the wall surface temperature may decrease. When the difference ΔTmin becomes small, it can be classified into a case where the temperature decreases only in a specific region and a case where a plurality of wall surface temperatures decrease in conjunction with each other. In the air-conditioning ventilation system 100, the optimum dew condensation avoidance control is carried out according to these states.

<Control of air conditioning ventilation system 100>
FIG. 6 is a main flowchart showing the control of the air conditioning ventilation system 100 according to the first embodiment. FIG. 7 is a sub-flow chart showing the control of the air conditioning ventilation system 100 according to the first embodiment. The control of the air conditioning ventilation system 100 is basically carried out periodically at predetermined intervals.

As shown in FIG. 6, when the control of the air-conditioning ventilation system 100 is performed, the control device 7 receives the wall surface temperature group of the inner wall surface from the plurality of surface temperature detection units 4 and the ventilation device 8 in step S1. The temperature information of the outside air temperature, the room temperature and the room humidity from the air conditioner 9 is acquired. The control device 7 stores various temperature information in the behavior storage unit 71 at any time as the time changes.

In step S2, the control device 7 calculates the indoor dew point temperature based on the temperature information of the indoor temperature and the indoor humidity of the indoor temperature detection unit 5 and the indoor humidity detection unit 6 constituting the indoor dew point temperature acquisition unit 17. Further, in step S2, the control device 7 compares each of the plurality of wall surface temperatures with the calculated indoor dew point temperature and calculates a plurality of differences. Then, in step S2, the control device 7 calculates the smallest minimum difference among the plurality of differences, and sets the minimum difference as the difference ΔTmin, which is a dew condensation risk index.

In step S3, the control device 7 determines whether or not the difference ΔTmin is less than 2 ° C. as the first threshold value. When the control device 7 determines that the difference ΔTmin is less than 2 ° C. and there is a risk of dew condensation, the control device 7 shifts the process to step S4. When the control device 7 determines that the difference ΔTmin is 2 ° C. or higher and there is no risk of dew condensation, the control device 7 shifts the process to step S5.

The first threshold value is not limited to 2 ° C., and can be appropriately set to an appropriate value exceeding 0 ° C. The processing of step S2 and step S3 constitutes a dew condensation risk determination unit 72 that determines whether or not a dew condensation occurrence risk has occurred.

The control device 7 implements dew condensation avoidance control in step S4. The details of the dew condensation avoidance control are the processing of the sub-flow chart shown in FIG. 7 described later. After the dew condensation avoidance control is performed, the control device 7 shifts the process to step S6.

In step S5, the control device 7 sets the dew condensation avoidance control flag to 0, does not perform the dew condensation avoidance control, and ends the process. The process of step S5 is the process of the end point where the corresponding dew condensation avoidance operation is continued until the dew condensation risk is eliminated by the continuation unit 75. Therefore, if the control device 7 has performed the corresponding dew condensation avoidance operation, the control device 7 ends the corresponding dew condensation avoidance operation. Further, if the control device 7 has performed the dew condensation removing operation, the control device 7 ends the dew condensation removing operation. Further, the control device 7 also ends the display of the notification information and the warning information on the touch panel unit 7a.

In step S6, the control device 7 determines whether or not the difference ΔTmin is less than 0 ° C. as the second threshold value. When the difference ΔTmin is less than 0 ° C., the control device 7 determines that dew condensation has occurred on the wall surface, and shifts the process to step S8. When the difference ΔTmin is 0 ° C. or higher, the control device 7 determines that no dew condensation has occurred on the wall surface, and shifts the process to step S7.

The processing of step S2 and step S6 constitutes a dew condensation occurrence determination unit 77 for determining whether or not dew condensation has occurred.

In step S8, the control device 7 displays the warning information on the occurrence of dew condensation on the touch panel unit 7a. The warning information may be an alarm notification or the like. Further, the warning information may be displayed or notified on a mobile terminal, a remote controller, or the like if the user can recognize it. After the process of step S8, the control device 7 shifts the process to step S9.

The process of step S8 constitutes a warning unit 78 that warns the user of the determination result that dew condensation has occurred by the dew condensation generation determination unit 77.

In step S9, the control device 7 carries out a dew condensation removing operation in which the ventilation volume is increased by the ventilation device 8. After the process of step S9, the control device 7 shifts the process to step S1.

The process of step S9 constitutes a dew condensation removing unit 79 that executes a dew condensation removing operation for increasing the ventilation volume by the ventilation device 8 when the dew condensation generation determining unit 77 determines that dew condensation has occurred.

In step S7, the control device 7 switches the warning information for the occurrence of dew condensation from the touch panel unit 7a to non-display. The reason for switching to non-display is that the difference ΔTmin is 0 ° C. or higher and no dew condensation has occurred. After the processing in step S7, the control device 7 shifts the processing to step S1.

<Condensation avoidance control>
As shown in FIG. 7, when the dew condensation avoidance control is executed, the control device 7 determines in step S41 whether or not the dew condensation avoidance control is currently being performed. In terms of waterfall, the control device 7 determines whether or not the dew condensation avoidance control flag is 1. When the control device 7 determines that the dew condensation avoidance control flag is not 1, the process proceeds to step S42. When the control device 7 determines that the dew condensation avoidance control flag is 1, the control device 7 shifts the process to step S43.

In step S42, the control device 7 receives information on the wall surface temperature group of the inner wall surface from the plurality of surface temperature detection units 4, the outside air temperature from the ventilation device 8, and the temperature information of the room temperature and the room humidity from the air conditioner 9. Calculate the amount of time change. As a result, it is possible to distinguish between an increasing tendency of the indoor dew point temperature due to a time change and a decreasing tendency of the entire wall surface temperature group due to a time change. After the process of step S42, the control device 7 shifts the process to step S44. The process of step S42 is a process of calculating the time change of the temperature of each part from the past temperature history when the dew condensation avoidance control is newly started, that is, the timing when the difference ΔTmin becomes less than 2 ° C. The control device 7 estimates a factor that increases the risk of dew condensation from the amount of time change of the calculation result, and performs the dew condensation avoidance operation most suitable for the factor.

In step S44, the control device 7 determines whether or not the indoor dew point temperature tends to increase with time. When the control device 7 determines that the indoor dew point temperature tends to increase due to a change in time, the control device 7 shifts the process to step S45. When the control device 7 determines that the indoor dew point temperature does not tend to increase due to the time change, the control device 7 shifts the process to step S46.

In the process of step S44, the indoor dew point temperature tends to increase based on the time change of the temperature information of the indoor temperature and the indoor humidity detected by the indoor temperature detection unit 5 and the indoor humidity detection unit 6 that have changed with time stored in the behavior storage unit 71. It constitutes a dew condensation factor estimation unit 73 that estimates the first increasing factor that estimates a certain case.

In step S45, the control device 7 carries out the first dew condensation avoidance operation in which the ventilation volume is increased by the ventilation device 8. After the process of step S45, the control device 7 shifts the process to step S46.

If the indoor dew point temperature is on the rise, it is considered that a new source of moisture has been generated in the room, so moisture discharge is the most effective dew condensation avoidance operation. Therefore, the control device 7 instructs the ventilation device 8 to increase the ventilation volume as a dew condensation avoidance operation. As a result, the inflow of outside air having a low water content increases, so that the indoor dew point temperature tends to decrease. Here, the increase in ventilation volume is the most reliable dew condensation avoidance operation. Therefore, the control device 7 instructs to increase the ventilation volume even in the dew condensation generation state where ΔTmin is less than 0 ° C. as in step S9.

On the other hand, due to the increase in ventilation volume, outside air at a lower temperature than the indoor air flows in. Therefore, there is a disadvantage that the heating load increases and the power consumption of the air conditioner 9 increases. Further, once the water is discharged from the target room 1, there is a disadvantage that the inside of the target room 1 continues to be excessively dry even after the risk of dew condensation is eliminated. Therefore, in the case where the indoor dew point temperature does not rise, the countermeasure control that does not increase the ventilation volume, that is, the dew condensation avoidance operation in step S47 or step S48 described later is performed.

The process of step S45 constitutes a selection unit 74 that selects the first dew condensation avoidance operation that increases the ventilation volume by the ventilation device 8.

In step S46, the control device 7 determines whether or not the entire wall surface temperature group tends to decrease with time. When the control device 7 determines that the entire wall surface temperature group does not tend to decrease due to the time change, the control device 7 shifts the process to step S47. When the control device 7 determines that the entire wall surface temperature group tends to decrease due to the time change, the control device 7 shifts the process to step S48.

The process of step S46 constitutes a dew condensation factor estimation unit 73 that estimates that the case where all the temperature information of the wall surface temperature of the plurality of time-changed surface temperature detection units 4 stored in the behavior storage unit 71 is lowered is the second increase factor. doing.

In step S47, the control device 7 performs a second dew condensation avoidance operation for increasing the air volume of the air conditioner 9, the first blower 10, and the second blower 11. After the process of step S47, the control device 7 shifts the process to step S49.

When only a specific wall surface temperature drops, it is considered that the air movement around the part where the temperature has dropped is hindered. For example, when the fixture 16 or luggage is placed so as to hide the wall surface where the temperature has dropped, or when the curtain is closed so as to be in contact with the window surface. In such a case, a dew condensation avoidance operation is carried out to promote the movement of indoor air by instructing the operation of the air conditioner 9, the first blower 10 and the second blower 11 to increase the air volume so as to promote the movement of air near the wall surface. Will be done. The promotion of convection near the inner wall by the wind is a countermeasure control that hardly increases the power consumption and does not increase the energy consumption. On the other hand, since the ventilation noise and the draft feeling increase, there is a concern that the indoor comfort may deteriorate. Therefore, the countermeasure control for increasing the air volume is used as a temporary dew condensation avoidance operation.

The process of step S47 constitutes a selection unit 74 that selects a second dew condensation avoidance operation that increases the air volume of the air conditioner 9, the first blower 10, and the second blower 11.

In step S48, the control device 7 carries out a third dew condensation avoidance operation for raising the set temperature of the air conditioner 9. After the processing in step S48, the control device 7 shifts the processing to step S49.

Even if the wall surface temperature drops while the indoor dew point temperature remains unchanged, the risk of dew condensation increases. When all of the plurality of wall surface temperatures are lowered, it is considered that the indoor temperature is lowered or the outside air temperature is lowered. Therefore, as a countermeasure control, a dew condensation avoidance operation is carried out in which the temperature control target value, which is the set temperature of the air conditioner 9, is raised in order to raise the indoor temperature. If the room temperature rises, the risk of dew condensation can be reduced without lowering the room humidity, and excessive drying in the target room can be avoided. The rise in the set temperature of the air conditioner 9 is accompanied by a temporary increase in the power consumption of the air conditioner 9. However, if the set temperature of the air conditioner 9 is lowered after the risk of dew condensation is avoided, the power consumption of the air conditioner 9 can be reduced. As a result, dew condensation avoidance operation can be realized without a large increase in power consumption.

The process of step S48 constitutes a selection unit 74 that selects a third dew condensation avoidance operation that raises the set temperature of the air conditioner 9.

The control device 7 sets the dew condensation avoidance control flag to 1 in step S49. After the process of step S49, the control device 7 ends the process of dew condensation avoidance control, and shifts the process to step S6 of FIG.

On the other hand, when the control device 7 determines in step S43 following step S41 that the dew condensation avoidance control flag is 1, the current corresponding dew condensation avoidance operation, that is, the first dew condensation avoidance operation being carried out. , Any one or a combination of two or more of the second dew condensation avoidance operation and the third dew condensation avoidance operation is continued. After the process of step S43, the control device 7 ends the process of dew condensation avoidance control, and shifts the process to step S6 of FIG.

The process of step S43 constitutes a continuation unit 75 that, when the selection unit 74 selects the corresponding dew condensation avoidance operation, continues the corresponding dew condensation avoidance operation until the dew condensation risk determination unit 72 determines that there is no dew condensation risk. ing.

The processing of steps S44 and S46 constitutes a dew condensation factor estimation unit 73 that estimates factors that increase the risk of dew condensation.

The processes of steps S45, S47, and S48 constitute a selection unit 74 that selects one or more corresponding dew condensation avoidance operations from a plurality of dew condensation avoidance operations according to factors that increase the risk of dew condensation.

<Effect of Embodiment 1>
According to the first embodiment, the air conditioning ventilation system 100 includes a ventilation device 8, an air conditioner 9, a first blower 10 and a second blower 11 installed near the inner wall, and surfaces arranged at a plurality of locations on the inner wall. It includes a temperature detection unit 4, an indoor dew point temperature acquisition unit 17 that acquires an indoor dew point temperature based on the detection values of the indoor temperature detection unit 5 and the indoor humidity detection unit 6, and a control device 7. The control device 7 has a behavior storage unit 71 that stores time changes of detection values of various detection units including a plurality of surface temperature detection units 4, an indoor temperature detection unit 5, and an indoor humidity detection unit 6. The control device 7 includes a dew condensation risk determining unit 72 that determines whether or not a dew condensation risk has occurred based on each detected value of the plurality of surface temperature detecting units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquiring unit 17. Have. The control device 7 has a dew condensation factor estimation unit 73 that estimates factors that increase the risk of dew condensation. The control device 7 has a selection unit 74 that selects a corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set according to factors that increase the risk of dew condensation.

According to this configuration, the optimum dew condensation avoidance operation can be carried out according to the factors that increase the risk of dew condensation. Therefore, the dew condensation avoidance operation for avoiding the dew condensation is appropriately carried out, and the dew condensation can be avoided while ensuring the indoor comfort. As a result, the dew condensation avoidance operation can be selected depending on the factor that increases the dew condensation risk, and dew condensation can be reliably avoided even when the indoor moisture content increases, for example. Further, as a factor of increasing the risk of dew condensation due to a temporary decrease in room temperature or a decrease in outside air temperature, a dew condensation avoidance operation that does not discharge indoor moisture can be carried out, and a comfortable environment that does not cause excessive drying can be maintained. Furthermore, for factors that increase the risk of dew condensation in specific areas, dew condensation avoidance operation that promotes convection near the inner wall can be carried out, and the risk of dew condensation can be quickly eliminated without deteriorating comfort or increasing power consumption. ..

According to the first embodiment, when the selection unit 74 selects the corresponding dew condensation avoidance operation, the control device 7 continues the corresponding dew condensation avoidance operation until the dew condensation risk determination unit 72 determines that there is no dew condensation risk. It has a continuation portion 75 to be operated.

According to this configuration, the corresponding dew condensation avoidance operation is continued until the risk of dew condensation disappears, so that dew condensation can be completely avoided while ensuring indoor comfort.

According to the first embodiment, the dew condensation risk determination unit 72 calculates the smallest minimum difference between the detected values of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17. To do. The dew condensation risk determination unit 72 determines that a dew condensation risk has occurred when the minimum difference is less than 2 ° C., which is less than the first threshold value.

According to this configuration, the control device 7 can reliably determine whether or not there is a risk of dew condensation.

According to the first embodiment, the dew condensation risk determination unit 72 determines that there is no dew condensation risk when the minimum difference does not satisfy less than 2 ° C., which is less than the first threshold value.

According to this configuration, the control device 7 can reliably determine that there is no risk of dew condensation.

According to the first embodiment, the indoor dew point temperature acquisition unit 17 has an indoor temperature detection unit 5 and an indoor humidity detection unit 6. The indoor dew point temperature acquisition unit 17 calculates the indoor dew point temperature based on the detected values of the indoor temperature detection unit 5 and the indoor humidity detection unit 6.

According to this configuration, the indoor dew point temperature acquisition unit 17 can easily acquire the indoor dew point temperature from the detected values of the indoor temperature detection unit 5 and the indoor humidity detection unit 6.

According to the first embodiment, the dew condensation factor estimation unit 73 estimates that the case where the indoor dew point temperature acquired by the time-varying indoor dew point temperature acquisition unit 17 tends to increase is the first increasing factor. The dew condensation factor estimation unit 73 estimates that the case where all the detected values of the time-varying surface temperature detection units 4 stored in the behavior storage unit 71 decrease is the second increasing factor.

According to this configuration, the control device 7 can estimate the factors that increase the risk of dew condensation, which are the first factor or the second factor.

According to the first embodiment, the dew condensation factor estimation unit 73 raises the indoor dew point temperature based on the time change of each detection value of the time-changed indoor temperature detection unit 5 and the indoor humidity detection unit 6 stored in the behavior storage unit 71. The case of tendency is presumed to be the first increasing factor.

According to this configuration, the control device 7 can estimate the factor that increases the risk of dew condensation, which is the first factor.

According to the first embodiment, the selection unit 74 has a first dew condensation avoidance operation in which the ventilation volume is increased by the ventilation device 8, and a second dew condensation in which the air volume of the air conditioner 9, the first blower 10 and the second blower 11 is increased. One or more dew condensation avoidance operations corresponding to the factors that increase the risk of dew condensation are selected from the avoidance operation and the third dew condensation avoidance operation that raises the set temperature of the air conditioner 9.

According to this configuration, the corresponding dew condensation avoidance operation can be selected from one or a plurality of combinations of the first dew condensation avoidance operation, the second dew condensation avoidance operation, and the third dew condensation avoidance operation according to the factors that increase the risk of dew condensation. ..

According to the first embodiment, the control device 7 is selected when the dew condensation factor estimation unit 73 estimates the first increasing factor in which the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17 that has changed with time tends to increase. The unit 74 selects the first dew condensation avoidance operation in which the ventilation volume is increased by the ventilation device 8.

According to this configuration, the indoor dew point temperature tends to rise, so the indoor moisture content increases. In this case, the first dew condensation avoidance operation for increasing the ventilation volume is selected by the ventilation device 8, and dew condensation can be reliably avoided.

According to the first embodiment, the control device 7 is a second increasing factor in which all the detected values of the plurality of time-varying surface temperature detecting units 4 stored in the behavior storage unit 71 by the dew condensation factor estimating unit 73 are reduced. When it is estimated that there is no such operation, the selection unit 74 selects the second dew condensation avoidance operation for increasing the air volume of the air conditioner 9, the first blower 10, and the second blower 11.

According to this configuration, since all the detected values of the plurality of surface temperature detecting units 4 that have changed with time do not decrease, a factor that increases the risk of dew condensation at a specific part occurs. In this case, dew condensation avoidance operation can be carried out by increasing the air volume of the air conditioner 9, the first blower 10 and the second blower 11 to promote convection near the inner wall, which is accompanied by deterioration of comfort or increase in power consumption. The risk of dew condensation can be eliminated quickly.

According to the first embodiment, the control device 7 determines the second increasing factor in which all the detected values of the plurality of surface temperature detecting units 4 whose behaviors are changed by the behavior storage unit 71 stored by the dew condensation factor estimation unit 73 are reduced. When estimated, the selection unit 74 selects the third dew condensation avoidance operation that raises the set temperature of the air conditioner 9.

According to this configuration, since all the detected values of the plurality of surface temperature detection units 4 that have changed with time decrease, a factor of increasing the risk of dew condensation due to a temporary decrease in room temperature or a decrease in outside air temperature occurs. In this case, the set temperature of the air conditioner 9 can be raised to carry out a dew condensation avoidance operation that does not discharge indoor moisture, and a comfortable environment that does not cause excessive drying can be maintained.

According to the first embodiment, the control device 7 has a notification unit 76 that notifies the user that the dew condensation risk determination unit 72 has determined that the dew condensation risk has occurred.

According to this configuration, the user can recognize that the risk of dew condensation has occurred.

According to the first embodiment, the control device 7 has a dew condensation occurrence determination unit 77 for determining whether or not dew condensation has occurred.

According to this configuration, the control device 7 can determine whether or not dew condensation has occurred.

According to the first embodiment, the dew condensation generation determination unit 77 determines the smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17. Calculate. The dew condensation generation determination unit 77 determines that dew condensation has occurred when the minimum difference is less than 0 ° C., which is less than the second threshold value.

According to this configuration, the control device 7 can determine that dew condensation has occurred.

According to the first embodiment, the control device 7 has a warning unit 78 that warns the user of the determination result that dew condensation has occurred by the dew condensation generation determination unit 77.

According to this configuration, the user can recognize that dew condensation has occurred.

According to the first embodiment, when the control device 7 determines that the dew condensation has occurred, the dew condensation removing unit 79 performs a dew condensation removing operation for increasing the ventilation volume by the ventilation device 8. Have.

According to this configuration, when dew condensation occurs, the ventilation device 8 can carry out a dew condensation removing operation for increasing the ventilation volume, and the dew condensation can be removed.

According to the first embodiment, the control device 7 of the air conditioning ventilation system 100 has the detection results of the plurality of surface temperature detecting units 4 arranged at a plurality of locations on the inner wall and the indoor dew point acquired by the indoor dew point temperature acquiring unit 17. The ventilation device 8, the air conditioner 9, and the first blower 10 and the second blower 11 installed near the inner wall are controlled according to the temperature. The control device 7 of the air-conditioning ventilation system 100 has a behavior storage unit 71 that stores time changes of detection values of various detection units including a plurality of surface temperature detection units 4. The control device 7 of the air-conditioning ventilation system 100 determines whether or not a dew condensation risk has occurred based on each detection value of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17. It has a discriminating unit 72. The control device 7 of the air conditioning ventilation system 100 has a dew condensation factor estimation unit 73 that estimates factors that increase the risk of dew condensation. The control device 7 of the air-conditioning ventilation system 100 has a selection unit 74 that selects a corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set according to factors that increase the risk of dew condensation.

According to this configuration, dew condensation avoidance operation for avoiding dew condensation is appropriately carried out, and dew condensation can be avoided while ensuring indoor comfort.

According to the first embodiment, the control device 7 of the air conditioning ventilation system 100 has the detection results of the plurality of surface temperature detecting units 4 arranged at a plurality of locations on the inner wall and the indoor dew point acquired by the indoor dew point temperature acquiring unit 17. The ventilation device 8, the air conditioner 9, and the first blower 10 and the second blower 11 installed near the inner wall are controlled according to the temperature. The smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17, ΔTim, is less than the first threshold value, and the room changes with time. When the indoor dew point temperature acquired by the dew point temperature acquisition unit 17 tends to rise, the first dew condensation avoidance operation for increasing the ventilation volume is performed by the ventilation device 8. The smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17, ΔTim is less than the first threshold value, and the plurality of time-varying ones If all of the detected values of the surface temperature detecting unit 4 of the above are not lowered, the second dew condensation avoiding operation for increasing the air volume of the air conditioner 9, the first blower 10 and the second blower 11 is performed. The smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17, ΔTim is less than the first threshold value, and the plurality of time-varying ones When all of the detected values of the surface temperature detecting unit 4 of the above are lowered, the third dew condensation avoiding operation for raising the set temperature of the air conditioner 9 is carried out.

According to the first embodiment, when one or more of the first dew condensation avoidance operation, the second dew condensation avoidance operation, or the third dew condensation avoidance operation is performed, a plurality of corresponding dew condensation avoidance operations are performed. It is continued until the smallest minimum difference ΔTim among the differences between each detected value of the surface temperature detecting unit 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquiring unit 17 exceeds the first threshold value.

According to the first embodiment, when the smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detecting units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquiring unit 17 is less than the first threshold value. Notifies the user that it has determined that the risk of condensation has occurred.

According to the first embodiment, the smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detecting units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquiring unit 17 is less than the second threshold value. If so, warn the user that condensation has occurred.

According to the first embodiment, the smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detecting units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquiring unit 17 is less than the second threshold value. In this case, the dew condensation removing operation for increasing the ventilation volume is carried out by the ventilation device 8.

According to the first embodiment, the control method of the air conditioning ventilation system 100 includes the detection results of the surface temperature detection units 4 arranged at a plurality of locations on the inner wall, the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17, and the indoor dew point temperature. The ventilation device 8, the air conditioner 9, and the first blower 10 and the second blower 11 installed in the vicinity of the inner wall are controlled accordingly. The control method of the air-conditioning ventilation system 100 includes a behavior memory step of storing the time change of the detection value of various detection units including the plurality of surface temperature detection units 4. The control method of the air-conditioning ventilation system 100 is a dew condensation risk determination method for determining whether or not a dew condensation risk has occurred based on each detection value of the plurality of surface temperature detection units 4 and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit 17. Including steps. The control method of the air conditioning ventilation system 100 includes a dew condensation factor estimation step for estimating a factor that increases the risk of dew condensation. The control method of the air-conditioning ventilation system 100 includes a selection step of selecting a corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations according to an increasing factor of the dew condensation occurrence risk.

1 Target room, 2 Air supply port, 3 Exhaust port, 4 Surface temperature detection unit, 5 Indoor temperature detection unit, 6 Indoor humidity detection unit, 7 Control device, 7a Touch panel unit, 8 Ventilation device, 9 Air conditioner, 10th 1st Blower, 11 2nd blower, 12 outside air temperature detector, 13 1st ventilation blower, 14 2nd ventilation blower, 15 heat exchanger, 16 fixtures, 17 indoor dew point temperature acquisition unit, 71 behavior storage unit, 72 dew condensation risk determination unit , 73 Dew condensation factor estimation unit, 74 selection unit, 75 continuation unit, 76 notification unit, 77 dew condensation occurrence determination unit, 78 warning unit, 79 dew condensation removal unit, 100 air conditioning ventilation system.

Claims

It is provided with a ventilator, an air conditioner, a blower, a plurality of surface temperature detectors arranged at a plurality of locations on the inner wall, an indoor dew point temperature acquisition unit, and a control device.
The control device
A behavior storage unit that stores time changes in the detection values of various detection units including the plurality of surface temperature detection units, and a behavior storage unit.
A dew condensation risk determination unit that determines whether or not a dew condensation risk has occurred based on each detection value of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit.
The dew condensation factor estimation unit that estimates the factors that increase the risk of dew condensation,
A selection unit that selects the corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set according to the factors that increase the risk of dew condensation.
Has an air conditioning ventilation system.
The control device
The first aspect of claim 1, wherein the selection unit has a continuation unit that, when the corresponding dew condensation avoidance operation is selected, continues the corresponding dew condensation avoidance operation until the dew condensation risk determination unit determines that there is no dew condensation risk. Air conditioning ventilation system.
The dew condensation risk determination unit
The smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit is calculated.
The air-conditioning ventilation system according to claim 1 or 2, wherein it is determined that the risk of dew condensation has occurred when the minimum difference is less than the first threshold value.
The dew condensation risk determination unit
The air-conditioning ventilation system according to claim 3, wherein it is determined that there is no risk of dew condensation when the minimum difference does not satisfy less than the first threshold value.
The indoor dew point temperature acquisition unit
It has an indoor temperature detection unit and an indoor humidity detection unit.
The air-conditioning ventilation system according to any one of claims 1 to 4, wherein the indoor dew point temperature is calculated based on the detected values of the indoor temperature detection unit and the indoor humidity detection unit.
The dew condensation factor estimation unit
The case where the indoor dew point temperature acquired by the time-varying indoor dew point temperature acquisition unit tends to increase is presumed to be the first increasing factor.
The item according to any one of claims 1 to 5, wherein it is presumed that the case where all the detected values of the plurality of surface temperature detecting units that have changed over time stored in the behavior storage unit decrease is the second increasing factor. Air conditioning ventilation system.
The dew condensation factor estimation unit
A claim that presumes that the case where the indoor dew point temperature tends to increase based on the time change of each detection value of the indoor temperature detection unit and the indoor humidity detection unit that has changed with time stored in the behavior storage unit is the first increasing factor. The air-conditioning ventilation system according to claim 6, which is subordinate to claim 5.
The selection unit
The first dew condensation avoidance operation that increases the ventilation volume by the ventilation device,
The second dew condensation avoidance operation that increases the air volume of the air conditioner and the blower, and
The third dew condensation avoidance operation that raises the set temperature of the air conditioner and
The air-conditioning ventilation system according to any one of claims 1 to 7, wherein one or more dew condensation avoidance operations corresponding to the factors for increasing the risk of dew condensation are selected.
The control device
When the first increasing factor that the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit that has changed over time by the dew condensation factor estimating unit is estimated, the selection unit increases the ventilation volume by the ventilation device. The air-conditioning ventilation system according to any one of claims 1 to 8, wherein the first dew condensation avoidance operation is selected.
The control device
When it is estimated by the dew condensation factor estimation unit that all of the detected values of the plurality of surface temperature detection units that have changed over time stored in the behavior storage unit are not the second increasing factor, the selection unit performs the air conditioning. The air-conditioning ventilation system according to any one of claims 1 to 9, wherein a second dew condensation avoidance operation for increasing the air volume of the machine and the blower is selected.
The control device
When the dew condensation factor estimation unit estimates the second increasing factor in which all the detected values of the plurality of surface temperature detection units that have changed over time stored in the behavior storage unit are reduced, the selection unit is the air conditioner. The air conditioning ventilation system according to any one of claims 1 to 10, wherein the third dew condensation avoidance operation for raising the set temperature is selected.
The control device
The air-conditioning ventilation system according to any one of claims 1 to 11, further comprising a notification unit that notifies the user that the dew condensation risk determination unit has determined that the dew condensation risk has occurred.
The control device
The air-conditioning ventilation system according to any one of claims 1 to 12, further comprising a dew condensation generation determining unit for determining whether or not dew condensation has occurred.
The dew condensation occurrence determination unit is
The smallest minimum difference among the differences between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit is calculated.
The air-conditioning ventilation system according to claim 13, wherein it is determined that dew condensation has occurred when the minimum difference is less than the second threshold value.
The control device
The air-conditioning / ventilation system according to claim 13, further comprising a warning unit that warns the user of the determination result that dew condensation has occurred by the dew condensation generation determination unit.
The control device
The invention according to any one of claims 13 to 15, further comprising a dew condensation removing unit for carrying out a dew condensation removing operation for increasing the ventilation volume by the ventilation device when it is determined by the dew condensation generation determining unit that dew condensation has occurred. The described air conditioning ventilation system.
The ventilation device, the air conditioner, and the blower are controlled according to the detection results of the plurality of surface temperature detection units arranged at a plurality of locations on the inner wall and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit. It is a control device for the air conditioning and ventilation system.
A behavior storage unit that stores time changes in the detection values of various detection units including the plurality of surface temperature detection units, and a behavior storage unit.
A dew condensation risk determination unit that determines whether or not a dew condensation risk has occurred based on each detection value of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit.
The dew condensation factor estimation unit that estimates the factors that increase the risk of dew condensation,
A selection unit that selects the corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set according to the factors that increase the risk of dew condensation.
Control device for air conditioning and ventilation system.
The ventilation device, the air conditioner, and the blower are controlled according to the detection results of the plurality of surface temperature detection units arranged at a plurality of locations on the inner wall and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit. It is a control device for the air conditioning and ventilation system.
The smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit was less than the first threshold value, and changed over time. When the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit tends to rise, the first dew condensation avoidance operation for increasing the ventilation volume is carried out by the ventilation device.
The smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit was less than the first threshold value, and changed over time. If all of the detected values of the plurality of surface temperature detection units have not decreased, a second dew condensation avoidance operation for increasing the air volume of the air conditioner and the blower is performed.
The smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit was less than the first threshold value, and changed over time. A control device for an air conditioner / ventilation system that performs a third dew condensation avoidance operation for raising the set temperature of the air conditioner when all of the detected values of the plurality of surface temperature detection units are lowered.
When one or more of the first dew condensation avoidance operation, the second dew condensation avoidance operation, or the third dew condensation avoidance operation is performed, the corresponding dew condensation avoidance operation is detected by the plurality of surface temperature detections. The control of the air-conditioning ventilation system according to claim 18, wherein the smallest minimum difference ΔTim among the differences between each detected value of the unit and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit is continued until it exceeds the first threshold value. apparatus.
If the smallest minimum difference ΔTim between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit is less than the first threshold value, a dew condensation risk has occurred. The control device for an air conditioning / ventilation system according to claim 18 or 19, which notifies the user that the determination has been made.
Condensation occurred when the smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit was less than the second threshold value. The control device for an air conditioning / ventilation system according to any one of claims 18 to 20, which warns the user of the fact.
When the smallest minimum difference ΔTim among the differences between the detected values of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit is less than the second threshold value, the ventilation device is used. The control device for an air-conditioning ventilation system according to any one of claims 18 to 21, which carries out a dew condensation removing operation for increasing the ventilation volume.
The ventilation device, the air conditioner, and the blower are controlled according to the detection results of the plurality of surface temperature detection units arranged at a plurality of locations on the inner wall and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit. It is a control method of the air conditioning ventilation system.
A behavior memory step that stores time changes in the detection values of various detection units including the plurality of surface temperature detection units, and a behavior memory step.
A dew condensation risk determination step for determining whether or not a dew condensation risk has occurred based on each detection value of the plurality of surface temperature detection units and the indoor dew point temperature acquired by the indoor dew point temperature acquisition unit.
The dew condensation factor estimation step for estimating the factors that increase the risk of dew condensation, and
A selection step of selecting the corresponding dew condensation avoidance operation from a plurality of dew condensation avoidance operations set according to the factors that increase the risk of dew condensation.
How to control an air conditioning ventilation system, including.