Humidity Control System

Abstract

To provide a humidity conditioning system for improving comfortableness of a dwelling.SOLUTION: A humidity conditioning system 1 is for conditioning humidity of a dwelling 2 having heat-insulated foundation 3, an underfloor space 4 partitioned by the foundation 3, and an above-floor space 5 provided on the underfloor space 4. The humidity conditioning system 1 includes a first air supply port 18 capable of supplying outer air Ao to the underfloor space 4, a second air supply port 19 provided at a position different from the first air inlet port 18 and capable of supplying outer air Ao to the underfloor space 4, a supply device 20 for supplying air Au of the underfloor space 4 to the above-floor space 5, a first humidity acquiring device 21 for acquiring first absolute humidity of the outer air Ao supplied from the first air supply port 18, a second humidity acquiring device 22 for acquiring second absolute humidity of the outer air Ao supplied from the second air supply port 19, and a control device 23 supplying outer air Ao from any one of the first air supply port 18 and the second air supply port 19 to the underfloor space 4, on the basis of a relation of the first absolute humidity to the second absolute humidity.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a humidity control system. [Background technology]

[0002] The following Patent Document 1 describes a house. This house is equipped with an underfloor space that is surrounded by the ground, an insulated foundation, and a first floor floor and is capable of exchanging heat with the ground, an above-floor space that is adjacently disposed above the underfloor space via the floor, and a ventilation means for supplying air from the underfloor space to the above-floor space. At least one opening is formed in the foundation for introducing outside air into the underfloor space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-172889 A Summary of the Invention [Problem to be solved by the invention]

[0004] The absolute humidity of the outside air changes from moment to moment depending on the season and time, and the absolute humidity of the air in the underfloor space also changes from moment to moment due to the influence of the outside air. Therefore, in order to improve the comfort of a home, it is important to adjust the humidity in the underfloor space according to the absolute humidity of the outside air.

[0005] The present invention has been devised in view of the above circumstances, and has as its main object to provide a humidity control system capable of improving the comfort of a home. [Means for solving the problem]

[0006] The present invention is a system for controlling humidity in a house having an insulated foundation, an underfloor space partitioned by the foundation, and an above-floor space provided above the underfloor space, and is characterized in including a first air intake port capable of supplying outside air to the underfloor space, a second air intake port provided at a position different from the first air intake port and capable of supplying outside air to the underfloor space, a supply device for supplying air from the underfloor space to the above-floor space, a first humidity acquisition device for acquiring a first absolute humidity, which is the absolute humidity of the outside air supplied from the first air intake port, a second humidity acquisition device for acquiring a second absolute humidity, which is the absolute humidity of the outside air supplied from the second air intake port, and a control device for supplying outside air to the underfloor space from either the first air intake port or the second air intake port based on the relationship between the first absolute humidity and the second absolute humidity.

[0007] In the humidity control system of the present invention, the control device may execute a first operating mode in which outside air is supplied to the underfloor space from the second air intake port when it is currently summer and the first absolute humidity is higher than the second absolute humidity.

[0008] In the humidity control system of the present invention, the control device may execute a second operating mode in which outside air is supplied to the underfloor space from the first air intake port when it is currently summer and the first absolute humidity is lower than or equal to the second absolute humidity.

[0009] In the humidity control system of the present invention, the control device may execute a third operating mode in which outside air is supplied to the underfloor space from the first air intake port when it is currently winter and the first absolute humidity is higher than the second absolute humidity.

[0010] In the humidity control system of the present invention, the control device may execute a fourth operating mode in which outside air is supplied to the underfloor space from the second air intake port when it is currently winter and the first absolute humidity is lower than or equal to the second absolute humidity.

[0011] In the humidity control system according to the present invention, the first air supply port and the second air supply port may be provided at opposing positions in the underfloor space.

[0012] The humidity control system according to the present invention may further include a humidity control material provided in the underfloor space.

[0013] The humidity control system according to the present invention may further include an above-floor exhaust device for exhausting air in the above-floor space to the outdoors. Effect of the Invention

[0014] By employing the above-described configuration, the humidity control system of the present invention can improve the comfort of a home. [Brief description of the drawings]

[0015] [Figure 1] 1 is a cross-sectional view conceptually showing a house provided with a humidity control system of the present embodiment. [Diagram 2] FIG. 2 is a conceptual diagram showing the configuration of a control device according to the present embodiment. [Diagram 3] 4 is a flowchart showing a control procedure of the humidity adjustment system of the present embodiment. [Figure 4] 5 is a flowchart showing a processing procedure of a summer humidity adjustment mode in the present embodiment. [Diagram 5] FIG. 2 is a conceptual diagram illustrating a first operation mode and a fourth operation mode. [Figure 6] 10 is a flowchart showing a control procedure of a humidity adjustment system according to another embodiment of the present invention. [Figure 7] 10 is a flowchart showing a processing procedure of a winter humidity control mode. [Figure 8] 13 is a flowchart showing a control procedure of a humidity adjustment system according to still another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be understood that the drawings include exaggerated expressions and expressions different from the dimensional ratio of the actual structure in order to help understand the contents of the invention. Furthermore, the same or common elements are given the same reference numerals throughout the embodiments, and duplicated explanations are omitted. Furthermore, the specific configurations shown in the embodiments and drawings are for understanding the contents of the present invention, and the present invention is not limited to the specific configurations shown in the drawings.

[0017] [Overall structure of the house] 1 shows a cross-sectional view conceptually illustrating a house 2 equipped with a humidity control system 1 according to the present embodiment. The house 2 according to the present embodiment is configured as, for example, an industrialized house with excellent thermal insulation performance. However, the house 2 is not limited to an industrialized house.

[0018] A house 2 of this embodiment is configured to include an insulated foundation 3, an underfloor space 4 partitioned by the foundation 3, and an above-floor space 5 provided above the underfloor space 4.

[0019] [Basics] The foundation 3 is disposed continuously around the periphery of the house 2. The foundation 3 in this embodiment is configured as, for example, a strip footing made of reinforced concrete, but may also be a mat footing. The foundation 3 in this embodiment includes a base portion 6 and a rising portion 7. The base portion 6 extends horizontally underground. The rising portion 7 extends upward from the center of the base portion 6 in the width direction. A heat insulating material 8 is disposed in the rising portion 7 in this embodiment.

[0020] [Thermal insulation] The heat insulating material 8 in this embodiment extends vertically along the side surface of the foundation 3 (in this example, the rising portion 7) facing the underfloor space 4. Such heat insulating material 8 can block heat from the outside air transmitted through the foundation 3. This allows the house 2 to reduce temperature changes in the air in the underfloor space 4 (hereinafter sometimes simply referred to as "underfloor air"). For example, polystyrene foam or the like can be appropriately used as the heat insulating material 8.

[0021] [Underfloor space] In this embodiment, the underfloor space 4 is defined by the foundation 3, the floor 9, and the earthen floor 10.

[0022] [floor] The floor 9 extends between the foundations 3, 3. The floor 9 in this embodiment is configured as flooring in which a plurality of board panels are arranged, for example.

[0023] [Doma] The dirt floor 10 constitutes the bottom surface of the underfloor space 4. In this embodiment, the dirt floor 10 is constituted as a dirt floor concrete laid between the foundations 3, 3, but is not limited to this form.

[0024] Geothermal heat, which has little temperature change throughout the year, is transmitted to the earthen floor 10. Therefore, the earthen floor 10 is configured as a heat exchanger that can exchange heat between the geothermal heat and the underfloor air Au. As a result, the underfloor air Au that is cooler than the outside air Ao in summer and warmer than the outside air Ao in winter is stored in the underfloor space 4. The underfloor space 4 of this embodiment can effectively store the above-mentioned underfloor air Au due to the insulated foundation 3.

[0025] [Humidity control material] In the present embodiment, a humidity control material 11 is provided in the underfloor space 4. The humidity control material 11 in the present embodiment has a humidity control function of adsorbing (absorbing) moisture (water vapor) and releasing (releasing) moisture according to the amount of moisture contained in the air (underfloor air Au in this example). By controlling the humidity of the underfloor air Au (outside air Ao), such humidity control material 11 can, for example, suppress condensation that is likely to occur in the underfloor space 4 in summer and humidify the underfloor space 4 that is likely to dry out in winter. Furthermore, by supplying the humidity-controlled underfloor air Au to the above-floor space 5, the comfort of the above-floor space 5 can be maintained.

[0026] The humidity control material 11 of the present embodiment is formed in a panel shape, but is not limited to this form and may be formed in, for example, a block shape, a powder shape, etc. The humidity control material 11 of the present embodiment is disposed on the inner surface of the floor 9 (the surface facing the underfloor space 4), but may be disposed on the earthen floor 10, for example.

[0027] For example, a humidity-conditioning material (not shown) having a porous surface structure is blended in the humidity-conditioning material 11. For example, diatomaceous earth, siliceous shale, allophane, imogolite, acid clay, theoiolite, zeolite, calcium silicate, silica gel, bentonite, montmorillonite, or charcoal may be used as the humidity-conditioning material. The humidity-conditioning material 11 may be formed by combining a plurality of these humidity-conditioning materials.

[0028] The moisture-conditioning material 11 of this embodiment has good moisture absorption and desorption performance in the relative humidity range of 60%RH to 70%RH. Here, the moisture absorption and desorption performance (moisture control performance) is defined as moisture permeability measured at a temperature of 23±0.5°C in a low humidity range (relative humidity 30%RH to 50%RH), a medium humidity range (relative humidity 50%RH to 75%RH), a high humidity range (relative humidity 70%RH to 95%RH), and a wide range (relative humidity 40%RH to 80%RH) in accordance with JIS A 1470-1 (moisture absorption and desorption test method for moisture control building materials). The moisture control performance can be appropriately set according to the combination and blending amount of the moisture control material (not shown), but it is desirable to have high moisture absorption in the high humidity range and the wide range.

[0029] [Floor space] The above-floor space 5 is provided above the under-floor space 4. The above-floor space 5 in this embodiment is partitioned by a floor 9, a ceiling 12, an exterior wall 13, and a partition wall 14.

[0030] [Above-floor exhaust system] In this embodiment, an above-floor exhaust device 16 is provided to exhaust air Ai in the above-floor space 5 (hereinafter simply referred to as "above-floor air") to the outdoors 15. The above-floor exhaust device 16 is configured to include an exhaust fan 17. The exhaust fan 17 in this embodiment is provided in a hole (not shown) formed in the exterior wall 13.

[0031] The exhaust fan 17 is installed in a direction to blow air from the above-floor space 5 toward the outdoors 15. This allows the above-floor exhaust device 16 to exhaust the above-floor air Ai to the outdoors 15. The air volume of the exhaust fan 17 can be set appropriately. It is desirable to set the air volume based on the ventilation frequency required for the house 2, for example.

[0032] [Humidity control system] The humidity control system 1 of this embodiment includes a first air intake 18, a second air intake 19, a supply device 20, a first humidity acquisition device 21, a second humidity acquisition device 22, and a control device 23. Furthermore, the humidity control system 1 of this embodiment includes a first opening / closing unit 27 and a second opening / closing unit 28.

[0033] [1st air supply port] The first air intake port 18 is for supplying outside air Ao to the underfloor space 4. The first air intake port 18 in this embodiment is formed by a hole penetrating the foundation 3 (in this example, the rising portion 7) and the heat insulating material 8. Note that the first air intake port 18 is not limited to this aspect as long as it can supply the outside air Ao (hereinafter, the outside air supplied from the first air intake port 18 may be referred to as "first outside air A1") to the underfloor space 4. In this embodiment, one first air intake port 18 is provided, but multiple first air intake ports 18 may be provided depending on the size of the house 2.

[0034] [Second air supply port] The second air intake port 19, like the first air intake port 18, is for supplying outside air Ao to the underfloor space 4. The second air intake port 19 in this embodiment is formed in the same manner as the first air intake port 18, but is not limited to this form as long as it is capable of supplying outside air Ao (hereinafter, outside air supplied from the second air intake port 19 may be referred to as "second outside air A2") to the underfloor space 4. In this embodiment, one second air intake port 19 is provided, but multiple second air intake ports 19 may be provided.

[0035] The second air intake 19 in this embodiment is provided at a position different from the first air intake 18. Generally, the outdoor air Ao around the house 2 has a uniform absolute humidity, but there are cases where the absolute humidity around the building (house 2) varies locally, for example, depending on the condition of the ground surface. For this reason, by providing the second air intake 19 at a position different from the first air intake 18, it becomes possible to supply the underfloor space 4 with outdoor air Ao (second outdoor air A2) having a different absolute humidity from the outdoor air Ao (first outdoor air A1) supplied from the first air intake 18.

[0036] The position P1 where the first air supply port 18 is provided (hereinafter, sometimes simply referred to as the "first position") and the position P2 where the second air supply port 19 is provided (hereinafter, sometimes simply referred to as the "second position") are not particularly limited as long as the absolute humidity of the first outdoor air A1 and the second outdoor air A2 can be made different. In addition, for example, if the second air supply port 19 is provided adjacent to the first air supply port 18 in the underfloor space 4, the absolute humidity of the outdoor air Ao at those positions may become approximately the same. For this reason, it is desirable that the first air supply port 18 (first position P1) and the second air supply port 19 (second position P2) are provided at positions facing each other in the underfloor space 4. This makes it possible to make the absolute humidity of the outdoor air Ao at the first position P1 and the second position P2 different from each other.

[0037] In this embodiment, the first air intake port 18 and the second air intake port 19 are arranged to face each other in the underfloor space 4, but are not limited to this. For example, as long as the first air intake port 18 and the second air intake port 19 are respectively arranged in a pair of foundations 3, 3 (rising portions 7, 7) facing each other in the underfloor space 4, they may be misaligned with each other in the circumferential direction of the house 2 (foundation 3) or in the vertical direction.

[0038] [Feeding device] The supply device 20 is for supplying air (underfloor air) Au from the underfloor space to the above-floor space 5. The supply device 20 of this embodiment is configured to include an air flow path 25 and a fan .

[0039] The air flow path 25 in this embodiment is configured, for example, by a duct arranged in a piping space of the house 2. Note that the air flow path 25 is not limited to a duct, and may be configured, for example, by a space (not shown) surrounded by a partition wall or the like. One end of the air flow path 25 is disposed in the underfloor space 4. The other end of the air flow path 25 is disposed in the above-floor space 5.

[0040] The fan 26 in this embodiment is installed in a direction to blow air from the underfloor space 4 toward the air flow path 25 (above-floor space 5). By driving the fan 26 in this manner, the supply device 20 can supply the underfloor air Au (outside air Ao) to the above-floor space 5 via the air flow path 25, so that the above-floor space 5 can be ventilated. Furthermore, in this embodiment, the above-floor air Ai is exhausted to the outdoors 15 by the above-floor exhaust device 16, so that the above-floor space 5 can be ventilated efficiently. The air volume of the fan 26 can be set appropriately. For example, the air volume is desirably set based on the number of ventilations required for the house 2, similar to the exhaust fan 17 of the above-floor exhaust device 16.

[0041] [First humidity acquisition device] The first humidity acquisition device 21 is for acquiring a first absolute humidity, which is the absolute humidity of the outside air Ao (first outside air A1) supplied from the first air supply port 18. The first humidity acquisition device 21 in this embodiment is configured with a sensor capable of measuring relative humidity, but may be, for example, a sensor capable of measuring absolute humidity.

[0042] When the relative humidity is measured as in the first humidity acquisition device 21 of this embodiment, it is desirable to convert the relative humidity to absolute humidity based on the SONNTAG formula in accordance with the provisions of JIS-Z8806. This makes it possible to acquire the absolute humidity of the outside air Ao. In this embodiment, the conversion from the relative humidity to absolute humidity is performed by the control device 23.

[0043] The first humidity acquisition device 21 of this embodiment is provided at the first air supply port 18 (inside the outer surface of the foundation 3 (rising portion 7) in this example). This allows the first humidity acquisition device 21 to acquire the absolute humidity (relative humidity) of the first outside air A1 while being protected from exposure to rain and sunlight.

[0044] [Second humidity acquisition device] The second humidity acquisition device 22 is for acquiring a second absolute humidity, which is the absolute humidity of the outside air Ao (second outside air A2) supplied from the second air supply port 19. As the second humidity acquisition device 22 of the present embodiment, one similar to the first humidity acquisition device 21 can be adopted.

[0045] The second humidity acquisition device 22 of this embodiment is provided at the second air supply port 19 (in this example, inside the outer surface of the foundation 3 (rising portion 7)). This allows the second humidity acquisition device 22 to acquire the absolute humidity (relative humidity) of the second outside air A2 while being protected from exposure to rain and sunlight.

[0046] [First opening and closing section] The first opening / closing unit 27 of this embodiment is for opening and closing the first air supply port 18. When the first opening / closing unit 27 opens the first air supply port 18, the outdoor space 15 and the underfloor space 4 are connected to each other at the first air supply port 18. This allows the first air supply port 18 to supply the outdoor air Ao (first outdoor air A1) to the underfloor space 4. On the other hand, when the first opening / closing unit 27 closes the first air supply port 18, the outdoor space 15 and the underfloor space 4 are blocked at the first air supply port 18, and the supply of the outdoor air Ao (first outdoor air A1) to the underfloor space 4 can be stopped. The first opening / closing unit 27 is not particularly limited as long as it can open and close the first air supply port 18. For the first opening / closing unit 27 of this embodiment, a damper or the like that operates by electrical control can be used.

[0047] [Second opening and closing section] The second opening / closing section 28 in this embodiment is for opening and closing the second air supply port 19. When the second air supply port 19 is opened by the second opening / closing section 28, the outdoor space 15 and the underfloor space 4 are communicated at the second air supply port 19. This allows the second air supply port 19 to supply the outdoor air Ao (second outdoor air A2) to the underfloor space 4. On the other hand, when the second air supply port 19 is closed by the second opening / closing section 28, the outdoor space 15 and the underfloor space 4 are blocked at the second air supply port 19, and the supply of the outdoor air Ao (second outdoor air A2) to the underfloor space 4 can be stopped. The second opening / closing section 28 can be similar to the first opening / closing section 27.

[0048] [Control device] The control device 23 is for supplying the outside air Ao to the underfloor space 4 from either the first air supply port 18 or the second air supply port 19 based on the relationship between the first absolute humidity and the second absolute humidity. The control device 23 in this embodiment is configured with a computer. The control device 23 is installed, for example, on a partition wall or the like, but is not limited to such an embodiment. Fig. 2 is a conceptual diagram showing the configuration of the control device 23 in this embodiment.

[0049] The control device 23 of this embodiment is composed of a calculation unit 31 consisting of a CPU (central processing unit), a memory unit 32 in which processing procedures are stored, and a working memory 33 for reading the processing procedures, etc. stored in the memory unit 32.

[0050] The calculation unit 31 is connected to the input means 34. The input means 34 in this embodiment is configured, for example, with an operation button, a touch panel, or the like provided on the housing (shown in FIG. 1) of the control device 23. For example, information input by a resident or the like can be transmitted to the calculation unit 31 by such input means 34.

[0051] The calculation unit 31 is connected to the output means 35. The output means 35 in this embodiment is configured as a display provided in the housing (shown in FIG. 1) of the control device 23. The calculation unit 31 transmits a signal to the output means 35, thereby making it possible to display, for example, the operating status of the humidity control system 1 on the output means 35.

[0052] The supply device 20 (fan 26), the first humidity acquisition device 21, the second humidity acquisition device 22, the first opening / closing unit 27, the second opening / closing unit 28, and the above-floor exhaust device 16 (exhaust fan 17) are connected to the calculation unit 31 of this embodiment. As a result, the calculation unit 31 can transmit signals to the supply device 20, the first humidity acquisition device 21, the second humidity acquisition device 22, the first opening / closing unit 27, the second opening / closing unit 28, and the above-floor exhaust device 16, for example, to control their operation and grasp their operating conditions.

[0053] The control device 23 of this embodiment controls the operation of the first opening / closing unit 27 and the second opening / closing unit 28 based on the relationship between the first absolute humidity acquired by the first humidity acquisition device 21 and the second absolute humidity acquired by the second humidity acquisition device 22.

[0054] [First embodiment of humidity control system (humidity control method)] 3 is a flowchart showing a control procedure (hereinafter, sometimes simply referred to as a "humidity control method") of the humidity control system 1 of this embodiment. This processing procedure is performed based on a control procedure stored in the control device 23 (shown in FIG. 2).

[0055] [Underfloor air supply begins] In the humidity control system 1 (humidity control method) of this embodiment, first, as shown in Fig. 1, the control device 23 starts supplying air (underfloor air) Au from the underfloor space to the above-floor space 5 (step S1). In step S1 of this embodiment, first, the control device 23 starts operation of the fan 26 of the supply device 20. Furthermore, in step S1 of this embodiment, the control device 23 opens the first air supply port 18 with the first opening / closing unit 27 and closes the second air supply port 19 with the second opening / closing unit 28.

[0056] In step S1 of this embodiment, the fan 26 starts operating, creating a negative pressure in the underfloor space 4, so that the outside air Ao (first outside air A1) can be supplied to the underfloor space 4 via the first air supply port 18. Then, in step S1, the outside air Ao (underfloor air Au) supplied to the underfloor space 4 is supplied to the above-floor space 5 via the supply device 20, so that the above-floor space 5 can be ventilated.

[0057] In step S1, the control device 23 may start the operation of the above-floor exhaust device 16 (exhaust fan 17). As a result, in step S1, the above-floor air Ai can be exhausted to the outdoors 15, so that the above-floor space 5 can be efficiently ventilated.

[0058] [Determine the current season] Next, as shown in Fig. 3, in the humidity control system 1 (humidity control method) of this embodiment, it is determined which season the current time belongs to (step S2). In this embodiment, the determination of the current season is performed by the control device 23 (shown in Fig. 2), but it may also be performed by a resident of the house 2.

[0059] The current season may be determined, for example, based on a calendar set in the control device 23, or based on the outside air temperature, etc. The seasons determined in this embodiment include summer and seasons other than summer (for example, spring, autumn, and winter). The periods corresponding to these seasons may be set appropriately depending on the region of the house 2. In this embodiment, June to August are considered to be summer, and September to May are considered to be seasons other than summer, but are not particularly limited thereto.

[0060] If it is determined in step S2 that it is currently summer, the control device 23 executes the summer humidity control mode (step S3). In the summer humidity control mode (step S3) of the present embodiment, condensation in the underfloor space 4 that is likely to occur in summer is suppressed based on the procedure described below.

[0061] On the other hand, in seasons other than summer, condensation is unlikely to occur in the underfloor space 4. For this reason, if it is determined in step S2 that the current season is other than summer (for example, spring, autumn, or winter), the next step S4 is executed.

[0062] [Summer humidity control mode] FIG. 4 is a flowchart showing the processing procedure of the summer humidity adjustment mode in this embodiment.

[0063] [Get the first absolute humidity] In the summer humidity adjustment mode (step S3) of this embodiment, first, the control device 23 acquires a first absolute humidity (step S31). In step S31 of this embodiment, as shown in Fig. 1, the control device 23 causes the first humidity acquisition device 21 to measure the relative humidity of the outside air Ao (first outside air A1) supplied from the first air supply port 18. Then, the measured relative humidity is converted to absolute humidity by the control device 23. As a result, the first absolute humidity is acquired in step S31. Note that if the first humidity acquisition device 21 is capable of measuring absolute humidity, the above conversion is omitted.

[0064] [Get the second absolute humidity] Next, in the summer humidity adjustment mode (step S3) of this embodiment, first, the control device 23 acquires the second absolute humidity (step S32). In step S32 of this embodiment, the control device 23 causes the second humidity acquisition device 22 to measure the relative humidity of the outside air Ao (second outside air A2) supplied from the second air supply port 19. Then, the measured relative humidity is converted to absolute humidity by the control device 23. As a result, the second absolute humidity is acquired in step S32. Note that if the second humidity acquisition device 22 is capable of measuring absolute humidity, the above conversion is omitted.

[0065] [Determining absolute humidity] Next, as shown in Fig. 4, in the summer humidity adjustment mode (step S3) of this embodiment, the control device 23 determines whether the first absolute humidity is higher than the second absolute humidity (step S33). The determination in step S33 is performed by the control device 23 (shown in Fig. 1).

[0066] If it is determined in step S33 that the first absolute humidity is higher than the second absolute humidity ("Yes" in step S33), the control device 23 executes the first operation mode (step S34). On the other hand, if it is determined in step S33 that the first absolute humidity is equal to or lower than the second absolute humidity ("No" in step S33), the control device 23 executes the second operation mode (step S35).

[0067] [First operation mode] In this embodiment, when it is currently summer and the first absolute humidity is higher than the second absolute humidity as determined in step S2 (shown in FIG. 3) and step S33 (shown in FIG. 4), the first operation mode (step S34) is executed. FIG. 5 is a conceptual diagram for explaining the first operation mode and the fourth operation mode.

[0068] In the first operating mode (step S34), the control device 23 supplies outside air Ao (second outside air A2) to the underfloor space 4 from the second air supply port 19. In this embodiment, the control device 23 closes the first air supply port 18 with the first opening / closing unit 27 and opens the second air supply port 19 with the second opening / closing unit 28.

[0069] In the first operation mode, the second outdoor air A2 having a lower absolute humidity than the first outdoor air A1 can be supplied from the second air supply port 19 to the underfloor space 4, so the relative humidity in the underfloor space 4 can be reduced compared to when the first outdoor air A1 having a high absolute humidity is supplied (as shown in FIG. 1). Therefore, the humidity control system 1 of this embodiment can suppress condensation in the underfloor space 4. Furthermore, the humidity control system 1 of this embodiment can suppress the underfloor air Au having a high relative humidity from being supplied to the above-floor space 5. Therefore, in this embodiment, the comfort of the house 2 (above-floor space 5) can be improved. Furthermore, since the latent heat load of the above-floor air Ai can be reduced, the energy consumption of the air conditioning equipment can also be reduced.

[0070] In this embodiment, since the humidity control material 11 is provided in the underfloor space 4, the water vapor adsorbed in the humidity control material 11 can be efficiently released by the reduction in relative humidity in the underfloor space 4 in the first operation mode. This makes it possible to restore the humidity control performance of the humidity control material 11 (i.e., to restore it so that it can dehumidify again). Therefore, the humidity control system 1 of this embodiment can continuously suppress condensation in the underfloor space 4.

[0071] [Second operating mode] In this embodiment, if it is currently summer and the first absolute humidity is equal to or lower than the second absolute humidity as determined in step S2 (shown in FIG. 3) and step S33 (shown in FIG. 4), the second operating mode (step S35) is executed.

[0072] 1, in the second operating mode of this embodiment, the control device 23 supplies outside air Ao (first outside air A1) to the underfloor space 4 from the first air supply port 18. In this embodiment, the control device 23 opens the first air supply port 18 with the first opening / closing unit 27, and closes the second air supply port 19 with the second opening / closing unit 28.

[0073] In the second operation mode, the first outside air A1, which has a lower absolute humidity than the second outside air A2, can be supplied to the underfloor space 4 from the first air supply port 18. As a result, in the second operation mode, the relative humidity in the underfloor space 4 can be reduced compared to the case in which the second outside air A2, which has a higher absolute humidity, is supplied (as shown in FIG. 5). Therefore, in the humidity control system 1 of this embodiment, it is possible to suppress condensation in the underfloor space 4 and improve the comfort of the house 2 (above-floor space 5). Furthermore, since the latent heat load of the above-floor air Ai can be reduced, the energy consumption of air conditioning equipment can also be reduced.

[0074] In this way, in the humidity control system 1 (humidity control method) of the present embodiment, based on the relationship between the first absolute humidity and the second absolute humidity, which change from moment to moment, it is possible to supply outside air Ao, which has a relatively low absolute humidity, to the underfloor space 4 from either the first air supply port 18 or the second air supply port 19. Therefore, in the humidity control system 1 (humidity control method) of the present embodiment, it is possible to suppress the occurrence of condensation in the underfloor space 4, and to improve the comfort of the house 2 (above-floor space 5).

[0075] Furthermore, in the humidity control system 1 of this embodiment, the effect (condensation prevention effect) on the relative humidity of the underfloor space 4 due to the supply of the first outside air A1 and the second outside air A2 can be grasped based on the absolute humidity (amount of water vapor) that does not vary with the temperature at the first position P1 and the second position P2. As a result, in the humidity control system 1 of this embodiment, condensation in the underfloor space 4 can be more reliably prevented.

[0076] [Determine whether a suspension order has been issued] 3, in the humidity control system 1 (humidity control method) of the present embodiment, the control device 23 determines whether or not there is a stop command (step S4). The stop command can be input to the control device 23 by, for example, a resident.

[0077] If it is determined in step S4 that a stop command has been issued ("Yes" in step S4), the control device 23 stops the humidity control system 1 (humidity control method) (step S5). In step S5 of this embodiment, for example, in order to maintain ventilation of the house 2, the first air intake vent 18 may be opened and the fan 26 of the supply device 20 and the exhaust fan 17 of the above-floor exhaust device 16 may be kept operating.

[0078] On the other hand, if it is determined in step S4 that there is no stop command ("No" in step S4), the control device 23 executes steps S2 to S4 again.

[0079] In this way, in the humidity control system 1 (humidity control method) of the present embodiment, the outside air Ao can be supplied to the underfloor space 4 from either the first air supply port 18 or the second air supply port 19 based on the relationship between the first absolute humidity and the second absolute humidity until a stop command is received. Therefore, the humidity control system 1 of the present embodiment can continuously suppress condensation in the underfloor space 4, and can improve the comfort of the house 2 (above-floor space 5).

[0080] [Second embodiment of control procedure (humidity control method) of humidity control system] In the humidity control system 1 (humidity control method) of the embodiments described above, when it is currently summer, the summer humidity control mode is executed, but the present invention is not limited to this. Fig. 6 is a flowchart showing a control procedure (humidity control method) of the humidity control system 1 of another embodiment of the present invention. In this embodiment, the same components as those of the embodiments described above are given the same reference numerals, and the description thereof may be omitted.

[0081] 5, in step S1 of this embodiment, the control device 23 opens the second air supply port 19 with the second opening / closing unit 28 and closes the first air supply port 18 with the first opening / closing unit 27. As a result, in this embodiment, the second outside air A2 can be supplied to the underfloor space 4 via the second air supply port 19.

[0082] In step S2 of this embodiment, the seasons to be determined include winter and seasons other than winter (for example, spring, summer, and autumn). The periods corresponding to these seasons can be set appropriately depending on the region of the house 2. In this embodiment, December to March are considered to be winter, and April to November are considered to be seasons other than winter, but are not particularly limited.

[0083] In step S2 of this embodiment, if it is determined that the current season is winter, the control device 23 executes the winter humidity control mode (step S6). In the winter humidity control mode (step S6) of this embodiment, the relative humidity of the underfloor space 4, which tends to dry out in winter, is increased based on the procedure described below to humidify the above-floor space 5.

[0084] On the other hand, in seasons other than winter, it is difficult to dry the underfloor space 4 and the above-floor space 5. Therefore, if it is determined in step S2 that the current season is other than winter (for example, spring, summer, or autumn), the next step S4 is performed.

[0085] [Winter humidity control mode] FIG. 7 is a flowchart showing the processing procedure of the winter humidity control mode.

[0086] [Get the first and second absolute humidity values] In the winter humidity control mode (step S6) of this embodiment, first, the control device 23 acquires a first absolute humidity (step S61) and acquires a second absolute humidity (step S62). These absolute humidities are acquired in the same procedure as in the summer humidity control mode (step S3) shown in FIG.

[0087] [Determining absolute humidity] Next, in the winter humidity adjustment mode of this embodiment, it is determined whether the first absolute humidity is higher than the second absolute humidity (step S63). The determination in step S63 is performed by the control device .

[0088] In step S63, if it is determined that the first absolute humidity is higher than the second absolute humidity ("Yes" in step S63), the control device 23 executes the third operation mode (step S64). On the other hand, in step S63, if it is determined that the first absolute humidity is equal to or lower than the second absolute humidity ("No" in step S63), the control device 23 executes the fourth operation mode (step S65).

[0089] [Third operation mode] In this embodiment, if it is currently winter and the first absolute humidity is higher than the second absolute humidity as determined in step S2 (shown in FIG. 6) and step S63 (shown in FIG. 7), a third operation mode (step S64) is executed. In this third operation mode, as shown in FIG. 1, the control device 23 supplies outside air Ao (first outside air A1) to the underfloor space 4 from the first air supply port 18. In this embodiment, the control device 23 opens the first air supply port 18 with the first opening / closing unit 27 and closes the second air supply port 19 with the second opening / closing unit 28.

[0090] In the third operation mode, the first outside air A1, which has a higher absolute humidity than the second outside air A2, can be supplied from the first air supply port 18 to the underfloor space 4, so that the relative humidity in the underfloor space 4 can be increased compared to when the second outside air A2, which has a lower absolute humidity, is supplied (as shown in FIG. 5). Then, the underfloor air Au, whose relative humidity has been increased, is supplied to the above-floor space 5 via the supply device 20, so that the above-floor space 5 can be humidified. As a result, the humidity control system 1 of this embodiment can improve the comfort of the house 2 (above-floor space 5), and furthermore, it becomes possible to reduce the energy consumption of air-conditioning equipment.

[0091] In this embodiment, since the humidity control material 11 is provided in the underfloor space 4, the relative humidity of the underfloor space 4 is increased by the third operation mode, and the water vapor contained in the underfloor air Au can be efficiently adsorbed by the humidity control material 11. This makes it possible to recover the humidity control performance of the humidity control material 11 (i.e., to recover so that it can humidify again). Therefore, the humidity control system 1 of this embodiment can continuously humidify the underfloor space 4, and can improve the comfort of the house 2 (above-floor space 5).

[0092] [Fourth operation mode] In this embodiment, if it is currently winter and the first absolute humidity is equal to or lower than the second absolute humidity as determined in step S2 (shown in FIG. 6) and step S63 (shown in FIG. 7), the fourth operating mode (step S65) is executed.

[0093] In the fourth operating mode of this embodiment, as shown in Fig. 5, outside air Ao (second outside air A2) is supplied to the underfloor space 4 from the second air supply port 19. In this embodiment, the control device 23 closes the first air supply port 18 with the first opening / closing unit 27 and opens the second air supply port 19 with the second opening / closing unit 28.

[0094] In the fourth operation mode, the second outside air A2, which has a higher absolute humidity than the first outside air A1, can be supplied to the underfloor space 4 from the second air supply port 19. As a result, in the fourth operation mode, the relative humidity in the underfloor space 4 can be made higher than when the first outside air A1, which has a lower absolute humidity, is supplied (as shown in FIG. 1). Therefore, in the humidity control system 1 of this embodiment, the relative humidity in the underfloor space 4, which tends to dry out in winter, can be increased, and the energy consumption of the air conditioning equipment can be reduced while improving the comfort of the house 2 (above-floor space 5).

[0095] In this way, in the humidity control system 1 (humidity control method) of this embodiment, based on the relationship between the first absolute humidity and the second absolute humidity, which change from moment to moment, it is possible to supply outside air Ao, which has a relatively high absolute humidity, to the underfloor space 4 from either the first air supply port 18 or the second air supply port 19. Therefore, in the humidity control system 1 (humidity control method) of this embodiment, it is possible to increase the absolute humidity (and therefore the relative humidity) in the underfloor space 4, which tends to dry out in winter, and improve the comfort of the house 2 (above-floor space 5).

[0096] Furthermore, in the humidity control system 1 of this embodiment, the impact (humidification effect) on the relative humidity of the underfloor space 4 due to the supply of the first outside air A1 and the second outside air A2 can be grasped based on the absolute humidity (amount of water vapor) that does not vary with the temperatures at the first position P1 and the second position P2. As a result, in the humidity control system 1 of this embodiment, it is possible to increase the absolute humidity (and therefore the relative humidity) of the underfloor space 4, which tends to dry out in winter, and improve the comfort of the house 2 (above-floor space 5).

[0097] [Third embodiment of humidity control system (humidity control method)] In the first embodiment, when it is currently summer, the summer humidity control mode is executed, and in the second embodiment, when it is currently winter, the winter humidity control mode is executed, but the present invention is not limited to such an embodiment. Fig. 8 is a flowchart showing a control procedure (humidity control method) of the humidity control system 1 of still another embodiment of the present invention. In this embodiment, the same components as those in the previous embodiments are given the same reference numerals, and the description thereof may be omitted.

[0098] In step S2 of this embodiment, the seasons to be determined include summer, winter, and other seasons (for example, spring and autumn). The periods corresponding to these seasons can be set appropriately depending on the region of the house 2.

[0099] In this embodiment, if it is determined in step S2 that the current season is summer, the control device 23 executes the summer humidity control mode (step S3). On the other hand, if it is determined in step S2 that the current season is winter, the control device 23 executes the winter humidity control mode (step S6). The processing procedures for the summer humidity control mode and the winter humidity control mode are as described in the previous embodiments.

[0100] In this way, the humidity control system 1 (humidity control method) of this embodiment can suppress condensation in the underfloor space 4 in the summer and can humidify the underfloor space 4 in the winter, thereby improving the comfort of the house 2 (above-floor space 5) throughout the year.

[0101] Although a particularly preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the illustrated embodiment and can be modified in various ways. [Explanation of symbols]

[0102] 1 Humidity Control System 2. Housing 3 Basics 4 Underfloor space 5 Above-floor space 18 1st air supply port 19 2nd air supply port 20 Feeding device 21 1st humidity acquisition device 22 Second humidity acquisition device 23 Control device Ao Outside air Au Underfloor air

Claims

1. A system for controlling humidity in a house having an insulated foundation, a floor space partitioned by the foundation, and an above-floor space provided above the floor space, A first air supply port capable of supplying outside air to the underfloor space; A second air supply port that is provided at a position different from the first air supply port and is capable of supplying outside air to the underfloor space; A supply device for supplying air from the underfloor space to the above-floor space; a first humidity acquisition device for acquiring a first absolute humidity, which is the absolute humidity of the outside air supplied from the first air supply port; a second humidity acquisition device for acquiring a second absolute humidity, which is the absolute humidity of the outside air supplied from the second air supply port; a control device that supplies outside air to the underfloor space from one of the first air supply opening and the second air supply opening by opening one of the first air supply opening and the second air supply opening and closing the other of the first air supply opening and the second air supply opening based on a relationship between the first absolute humidity and the second absolute humidity, Humidity control system.

2. The humidity control system of claim 1, wherein the control device executes a first operating mode in which outside air is supplied to the underfloor space from the second air intake when it is currently summer and the first absolute humidity is higher than the second absolute humidity.

3. The humidity control system of claim 1 or 2, wherein the control device executes a second operating mode in which outside air is supplied to the underfloor space from the first air intake when it is currently summer and the first absolute humidity is lower than or equal to the second absolute humidity.

4. A system for controlling humidity in a house having an insulated foundation, a floor space partitioned by the foundation, and an above-floor space provided above the floor space, comprising: A first air supply port capable of supplying outside air to the underfloor space; A second air supply port that is provided at a position different from the first air supply port and is capable of supplying outside air to the underfloor space; A supply device for supplying air from the underfloor space to the above-floor space; a first humidity acquisition device for acquiring a first absolute humidity, which is the absolute humidity of the outside air supplied from the first air supply port; a second humidity acquisition device for acquiring a second absolute humidity, which is the absolute humidity of the outside air supplied from the second air supply port; a control device that supplies outside air to the underfloor space from either the first air supply port or the second air supply port based on a relationship between the first absolute humidity and the second absolute humidity, the control device executes a third operation mode in which outside air is supplied to the underfloor space from the first air supply port when it is currently winter and the first absolute humidity is higher than the second absolute humidity. Humidity control system.

5. A system for controlling humidity in a house having an insulated foundation, a floor space defined by the foundation, and an above-floor space provided above the floor space, comprising: A first air supply port capable of supplying outside air to the underfloor space; A second air supply port that is provided at a position different from the first air supply port and is capable of supplying outside air to the underfloor space; A supply device for supplying air from the underfloor space to the above-floor space; a first humidity acquisition device for acquiring a first absolute humidity, which is the absolute humidity of the outside air supplied from the first air supply port; a second humidity acquisition device for acquiring a second absolute humidity, which is the absolute humidity of the outside air supplied from the second air supply port; a control device that supplies outside air to the underfloor space from either the first air supply port or the second air supply port based on a relationship between the first absolute humidity and the second absolute humidity, the control device executes a fourth operation mode in which outside air is supplied to the underfloor space from the second air supply port when it is currently winter and the first absolute humidity is equal to or lower than the second absolute humidity. Humidity control system.

6. The humidity control system according to claim 1 , wherein the first air supply port and the second air supply port are provided at opposing positions in the underfloor space.

7. The humidity control system according to claim 1 , further comprising a humidity control material provided in the underfloor space.

8. The humidity control system according to claim 1 , further comprising an above-floor exhaust device for exhausting air in the above-floor space to the outdoors.

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