House, dehumidification system, and method of dehumidifying a house

Abstract

We provide a house that can dehumidify the floor space while suppressing the rise in room temperature above the floor. [Solution] This is a house 2. This house 2 includes an underfloor space 5, an upper floor space 6, a supply port 7 for introducing outside air Ao into the underfloor space 5, a heat pump type dehumidifier 16 located in the underfloor space 5 for dehumidifying the outside air Ao introduced from the supply port 7, a sensible heat exchanger 18 located in the underfloor space for supplying air that has had its temperature lowered while maintaining the absolute humidity of the dehumidified air Ad to the underfloor space 5, and an air supply device 17 for supplying the air Au from the underfloor space to the upper floor space 6.

Description

Technical Field

[0001] The present invention relates to a house, a dehumidification system, and a method for dehumidifying a house.

Background Art

[0002] The following Patent Document 1 describes a ventilation and air-conditioning system for air-conditioning a living room of a building while ventilating it.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Generally, in summer when the humidity is high, the living room may be dehumidified. In this case, for example, it is conceivable to install a heat pump type dehumidifier in the living room and operate the dehumidifier for dehumidification. However, there is a problem that the room temperature of the living room rises due to the heat generation of the dehumidifier.

[0005] The present invention has been devised in view of the above actual situation, and the main object thereof is to provide a house capable of dehumidifying the floor space while suppressing an increase in the room temperature of the floor space.

Means for Solving the Problems

[0006] The present invention relates to a house comprising: a floor; a foundation; an underfloor space partitioned by the floor, the foundation, and the ground; an upper floor space provided above the floor; a supply port provided in the foundation for introducing outside air into the underfloor space; a heat pump type dehumidifier located in the underfloor space for dehumidifying the outside air introduced from the supply port; a sensible heat exchanger located in the underfloor space for supplying air to the underfloor space with its temperature lowered while maintaining the absolute humidity of the dehumidified air; and an air supply device for supplying air from the underfloor space to the upper floor space. [Effects of the Invention]

[0007] By adopting the above configuration, the house of the present invention makes it possible to dehumidify the floor space while suppressing the rise in room temperature in the floor space. [Brief explanation of the drawing]

[0008] [Figure 1] This is a conceptual cross-sectional view showing an example of a house equipped with a dehumidification system. [Figure 2] This is a conceptual diagram showing an example of a heat pump type dehumidifier. [Figure 3] This is an exploded conceptual diagram showing an example of a sensible heat exchanger. [Figure 4] This is a conceptual diagram showing an example of the configuration of a control device. [Figure 5] This flowchart shows an example of a procedure for dehumidifying a house. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below with reference to the drawings. It should be understood that the drawings contain exaggerations and representations that differ from the actual dimensional ratios of the structures in order to aid in understanding the content of the invention. Furthermore, the same or common elements are denoted by the same reference numerals throughout each embodiment, and redundant explanations are omitted. Moreover, the specific configurations shown in the embodiments and drawings are for the purpose of understanding the content of the present invention, and the present invention is not limited to the specific configurations shown in the drawings.

[0010] [Housing] Figure 1 is a conceptual cross-sectional view showing an example of a house 2 equipped with a dehumidification system 1. In this embodiment, house 2 is configured, for example, as an industrialized house with excellent thermal insulation performance. However, house 2 is not limited to an industrialized house.

[0011] The house 2 of this embodiment is composed of a floor 3, a foundation 4, an underfloor space 5, an upper floor space 6, and a supply port 7.

[0012] [floor] The floor 3 is placed on the foundation 4. In this embodiment, the floor 3 is configured as flooring made up of multiple plank panels, but it is not particularly limited.

[0013] [Basic] Foundation 4 is arranged continuously around the perimeter of house 2. In this embodiment, foundation 4 is constructed as, for example, a strip foundation made of reinforced concrete, but is not particularly limited and may be a raft foundation.

[0014] The foundation 4 of this embodiment is composed of a base portion 4a and a rising portion 4b. The base portion 4a extends horizontally underground. The rising portion 4b extends upward from near the center in the width direction of the base portion 4a.

[0015] For the foundation 4 of this embodiment, a foundation heat insulating material 8 for insulating the under-floor space 5 from the outside air Ao may be provided. With such a foundation heat insulating material 8, the temperature change of the air in the under-floor space (hereinafter sometimes referred to as "under-floor air") Au becomes small. The foundation heat insulating material 8 of this embodiment extends vertically along the side surface on the under-floor space 5 side at the rising portion 4b of the foundation 4. For this foundation heat insulating material 8, for example, polystyrene foam or the like can be appropriately adopted.

[0016] The foundation 4 of this embodiment is configured to include a first portion 4A and a second portion 4B. The first portion 4A supports the first outer wall 9A among the outer walls 9 constituting the house 2. On the other hand, the second portion 4B supports the second outer wall 9B among the outer walls 9 constituting the house 2. The second outer wall 9B of this embodiment is provided facing the first outer wall 9A, but is not limited to such a mode. For example, it may be arranged in an L-shape or the like with the first outer wall 9A.

[0017] [Under-floor space] The under-floor space 5 is a space partitioned by the floor 3, the foundation 4, and the ground 10. The ground 10 constitutes the bottom surface of the under-floor space 5. In the ground 10 of this embodiment, a dirt floor concrete 11 is laid between the first portion 4A and the second portion 4B. This dirt floor concrete 11 does not have substantial heat insulating performance and no heat insulating material is arranged either. Therefore, heat exchange can occur between the under-floor air Au and the ground heat H (for example, 〈0000087〉10 to 20°C) with little temperature change throughout the year through the dirt floor concrete 11 (ground 10).

[0018] [Above-floor space] The above-floor space 6 is provided above the floor 3. In the above-floor space 6 of this embodiment, a living room 6A and a non-living room (not shown) are provided.

[0019] The above-floor space 6 is partitioned, for example, by the floor 3, the outer wall 9, the ceiling 12, and a partition wall (not shown). The outer wall 9 of this embodiment includes the above-mentioned first outer wall 9A and second outer wall 9B. The ceiling 12 of this embodiment extends horizontally between the first outer wall 9A and the second outer wall 9B.

[0020] It is preferable that the outer wall 9 (including the first outer wall 9A and the second outer wall 9B) and the ceiling 12 of the present embodiment are provided with a heat insulating material (not shown) for heat insulation from the outside 13 and the attic 14. Thereby, the floor space 6 can be configured as a heat insulating space. For example, polystyrene foam or the like can be appropriately adopted for this heat insulating material.

[0021] An exhaust fan 15 may be provided in the floor space 6 to exhaust the air (hereinafter sometimes referred to as "floor air") Ai in the floor space 6 to the outside 13. In this specification, the "fan" including the exhaust fan 15 is a machine for pumping air. Therefore, the exhaust fan 15, the fan 30 described later, the air supply fan 32, and the outside air supply fan 52 are not particularly limited as long as they can pump air.

[0022] The air volume of the exhaust fan 15 can be set as appropriate. In the present embodiment, it is preferable that the air volume of the exhaust fan 15 is set based on the required ventilation rate (for example, 0.5 times / h) of the house 2.

[0023] [Supply port] The supply port 7 is provided to introduce outside air Ao into the underfloor space 5. This supply port 7 is provided in the foundation 4.

[0024] The supply port 7 of the present embodiment is formed by a hole penetrating the first part 4A (rising part 4b) and the foundation heat insulating material 8. In the present embodiment, one supply port 7 is provided, but it is not limited to such a mode. For example, a plurality of supply ports 7 may be provided according to the size of the underfloor space 5 and the floor space 6, and the required ventilation rate of the house 2.

[0025] [Dehumidification system] The dehumidification system 1 is configured to include a heat pump type dehumidifier 16, an air supply device 17, and a sensible heat exchanger 18.

[0026] [Heat pump type dehumidifier] A heat pump type dehumidifier (hereinafter sometimes referred to as "dehumidifier") 16 is installed to dehumidify the outside air Ao introduced from the supply port 7. This dehumidifier 16 is located in the underfloor space 5. As a result, the above-floor space 6 can be utilized more effectively compared to, for example, the case where the dehumidifier 16 is installed in the above-floor space 6.

[0027] A known dehumidifier 16 may be used. Furthermore, while the dehumidifier 16 in this embodiment is mainly operated in the summer when the outside air Ao is hot and humid, it is not particularly limited.

[0028] Figure 2 is a conceptual diagram showing an example of a heat pump type dehumidifier 16. The dehumidifier 16 of this embodiment includes an inlet 20, a cooler 23, a compressor 24, a heat sink 26, and an expansion valve 28, similar to conventional dehumidifiers. Furthermore, unlike conventional dehumidifiers, the dehumidifier 16 of this embodiment may also be provided with a first path 21, a second path 22, an exhaust section 25, and a partition section 27. Of these components, the inlet 20 is formed in the housing 29 of the dehumidifier 16. On the other hand, the first path 21, the second path 22, the partition section 27, the cooler 23, the compressor 24, the heat sink 26, and the expansion valve 28 are arranged inside the housing 29. The exhaust section 25 is located outside the housing 29.

[0029] [entrance] The inlet 20 is for drawing outside air Ao, introduced from the supply port 7 (shown in Figure 1), into the dehumidifier 16 (casing 29). In this embodiment, the inlet 20 is formed by a hole that penetrates the inside and outside of the casing 29. In this embodiment, the inlet 20 is provided on the first part 4A side of the foundation 4 shown in Figure 1.

[0030] The inlet 20 in this embodiment includes a first inlet 21i and a second inlet 22i, but is not limited to this configuration. For example, there may be only one inlet (not shown), or other inlets may be included. Also, a filter 19 for filtering dust and other particles contained in the outside air Ao may be placed on the inlet 20 side (first inlet 21i in this example).

[0031] [First Route] In this embodiment, the first path 21 is partitioned by the inner surface of the housing 29 and the partition portion 27. This first path 21 communicates from the first inlet 21i to the first exhaust port 21o, but is not limited to this configuration. The first path 21 may, for example, branch off from a single inlet (not shown) shared by the first path 21 and the second path 22 and communicate with the first exhaust port 21o.

[0032] Furthermore, the first exhaust port 21o may be provided at a position opposite to the inlet 20 (first inlet 21i) (i.e., on the side of the second part 4B of the foundation 4 shown in Figure 1). This allows the outside air Ao introduced from the first inlet 21i to be smoothly (linearly) guided to the first exhaust port 21o. However, the first exhaust port 21o is not limited to being provided at a position opposite to the first inlet 21i.

[0033] [Second Route] In this embodiment, the second path 22 is demarcated by the inner surface of the housing 29 and the partition 27. This second path 22 communicates from the second inlet 22i to the second exhaust port 22o, but is not limited to this configuration. The second path 22 may, for example, branch off from a single inlet (not shown) shared by the first path 21 and the second path 22 and communicate with the second exhaust port 22o.

[0034] Furthermore, the second exhaust port 22o may be provided at a position opposite to the inlet 20 (second inlet 22i) (i.e., on the side of the second section 4B). This allows the outside air Ao introduced from the second inlet 22i to be smoothly (linearly) guided to the second exhaust port 22o. However, the second exhaust port 22o is not limited to being provided at a position opposite to the second inlet 22i.

[0035] [Partition section] The partition 27 is used to prevent air Ae from the second path 22 from mixing into the first path 21. In this embodiment, the partition 27 extends continuously from the first inlet 21i and the second inlet 22i to the first exhaust port 21o and the second exhaust port 22o. As a result, the first path 21 and the second path 22 are continuously partitioned, and air Ae from the second path 22 can be effectively prevented from mixing into the first path 21.

[0036] [Cooler] Cooler 23 is used to dehumidify the outside air Ao. This cooler 23 uses a refrigerant and is installed in the first path 21.

[0037] [Radiator] The radiator 26 is used to heat the air cooled by the cooler 23. A refrigerant is used in the radiator 26, and it is located in the first path 21. In this embodiment, the radiator 26 is positioned in the first path 21 on the side of the first exhaust port 21o relative to the cooler 23.

[0038] [Compressor] The compressor 24 is located in the second path 22 and is used to compress the refrigerant. This compression of the refrigerant can generate a high-temperature, high-pressure refrigerant. This high-temperature, high-pressure refrigerant is supplied to the heat exchanger 26. Furthermore, since the compressor 24 generates heat through the compression of the refrigerant, it is important to efficiently dissipate the heat.

[0039] [Expansion valve] The expansion valve 28 is used to expand the refrigerant and generate a low-temperature, low-pressure refrigerant. This low-temperature, low-pressure refrigerant is supplied to the cooler 23. In this embodiment, the expansion valve 28 is provided in the first path 21, but it is not limited to this configuration and may be provided in, for example, the second path 22 or outside the housing 29.

[0040] [Exhaust section] As shown in Figures 1 and 2, the exhaust section 25 is for connecting the second exhaust port 22o of the second path 22 to the outside (outdoors 13) of the underfloor space 5. The exhaust section 25 in this embodiment extends between the second exhaust port 22o and the discharge port 25o (shown in Figure 1). The exhaust section 25 in this embodiment is configured as a duct, but is not particularly limited and may be configured as, for example, a space enclosed by a partition wall or the like (not shown).

[0041] As shown in Figure 1, the discharge port 25o is provided in the foundation 4. In this embodiment, the discharge port 25o is formed by a hole that penetrates the first portion 4A (rising portion 4b) and the foundation insulation material 8, but it is not limited to this configuration. The discharge port 25o may also be formed by a hole that penetrates, for example, the second portion 4B (rising portion 4b) and the foundation insulation material 8.

[0042] [fan] As shown in Figures 1 and 2, the dehumidification system 1 of this embodiment may include a fan 30 for pressurizing outside air Ao to the inlets 20 (first inlet 21i and second inlet 22i) of the dehumidifier 16. The fan 30 of this embodiment includes a first fan 30a and a second fan 30b.

[0043] The first fan 30a is for pressurizing and sending outside air Ao, introduced from the supply port 7 shown in Figure 1, to the first inlet 21i shown in Figure 2. The airflow of this first fan 30a can be set as appropriate. In this embodiment, the airflow of the first fan 30a can be set based on the number of ventilations required for the house 2.

[0044] The second fan 30b is for pressurizing the outside air Ao introduced from the supply port 7 shown in Figure 1 and sending it to the second inlet 22i shown in Figure 2. The airflow of this second fan 30b can be set as appropriate. The outside air Ao supplied from the second fan 30b is not used for ventilation of the house 2, but is exhausted to the outside (outdoors 13) of the underfloor space 5 shown in Figure 1 via the second path 22 and exhaust section 25. For this reason, the airflow of the second fan 30b may be less than the airflow based on the ventilation rate.

[0045] In this embodiment, the fan 30 is exemplified as being composed of a first fan 30a and a second fan 30b, but is not limited to this configuration. The fan 30 may consist of only one fan capable of pressurizing outside air Ao to both the first inlet 21i and the second inlet 22i, or it may consist of three or more fans.

[0046] [Sensible heat exchanger] As shown in Figure 1, the sensible heat exchanger 18 is installed to supply air that has been dehumidified by the dehumidifier 16 (dehumidified air) Ad, with its temperature lowered while maintaining its absolute humidity, to the underfloor space 5. This sensible heat exchanger 18 is located within the underfloor space 5. This allows for more effective use of the above-floor space 6 compared to, for example, a case where the sensible heat exchanger 18 is installed in the above-floor space 6. A known type of sensible heat exchanger 18 may be used.

[0047] Figure 3 is an exploded conceptual diagram showing an example of a sensible heat exchanger 18. As shown in Figures 1 and 3, the sensible heat exchanger 18 of this embodiment is composed of a housing 41 and a sensible heat exchange element 42, and a third path 43 and a fourth path 44 are formed.

[0048] The housing 41 has a space for housing the sensible heat exchange element 42. As shown in Figure 3, the housing 41 has an inlet 43i and an outlet 43o for the third path 43, and an inlet 44i and an outlet 44o for the fourth path 44.

[0049] The sensible heat exchange element 42 is for exchanging heat between the air flowing through the third path 43 (in this example, dehumidified air Ad) and the air flowing through the fourth path 44 (in this example, outside air Ao) while maintaining the absolute humidity of the air. These third path 43 and fourth path 44 are composed of a plurality of liners 45 and a core (spacer) 46 placed between adjacent pairs of liners 45, 45. These liners 45 and core 46 have moisture-proof and heat-exchange properties and are stacked, for example, in a double-layered or honeycomb pattern (in this example, double-layered).

[0050] In this embodiment, the liner 45 and core 46 are stacked in a predetermined stacking direction D1. In this stacking direction D1, of a pair of adjacent cores 46a and 46b separated by a single liner 45, one core 46a is positioned rotated 90 degrees relative to the other core 46b around a rotation axis extending in the stacking direction D1.

[0051] Multiple hollow sections 47 are formed by one core 46a and a pair of adjacent liners 45, 45 connected via the other core 46a. These multiple hollow sections 47 form a third path 43. Additionally, multiple hollow sections 47 are formed by the other core 46b and a pair of adjacent liners 45, 45 connected via the other core 46b. These multiple hollow sections 47 form a fourth path 44 that is perpendicular to the third path 43.

[0052] An inlet 43i formed in the housing 41 is provided at one end of the third path 43. In this embodiment, the inlet 43i of the third path 43 is supplied with air (dehumidified air Ad) discharged from the first exhaust port 21o of the dehumidifier 16 shown in Figure 2. This air (dehumidified air Ad) may be supplied, for example, via a duct 48 (shown in Figures 1 and 3) connecting the first exhaust port 21o of the dehumidifier 16 and the inlet 43i of the sensible heat exchanger 18, or it may be supplied without using the duct 48. This allows the air (dehumidified air Ad) from the dehumidifier 16 to be supplied to the third path 43 via the inlet 43i.

[0053] On the other hand, an outlet 43o formed in the housing 41 is located at the other end of the third path 43. In this embodiment, the outlet 43o opens into the underfloor space 5 shown in Figure 1. As a result, the air (dehumidified air Ad) that has passed through the third path 43 can be supplied to the underfloor space 5 via the outlet 43o.

[0054] As shown in Figure 3, an inlet 44i formed in the housing 41 is provided at one end of the fourth path 44. In this embodiment, air at a lower temperature than the dehumidified air Ad supplied from the first exhaust port 21o (shown in Figure 2) of the dehumidifier 16 is supplied to the inlet 44i so as to lower the temperature of the dehumidified air Ad. Such low-temperature air can be used as appropriate, as long as it can lower the temperature of the dehumidified air Ad (for example, to about 37°C to 43°C). In this embodiment, outside air Ao (for example, to about 28 to 33°C) is supplied to the inlet 44i of the fourth path 44. The temperature of the dehumidified air Ad is lowered by heat exchange with such outside air Ao (for example, to about 31 to 36°C). The outside air Ao may be supplied, for example, via the outside air supply duct 51 and outside air supply fan 52 shown in Figure 1.

[0055] As shown in Figure 1, the outside air supply duct 51 has one end connected to the outside air supply port 53 and the other end connected to the inlet 44i of the fourth path 44 (shown in Figure 3). The outside air supply port 53 penetrates the foundation 4 and the foundation insulation 8. The outside air supply fan 52 is for pressurizing and pumping outside air Ao from the outside air supply port 53 toward the inlet 44i of the fourth path 44. These outside air supply duct 51 and outside air supply fan 52 allow the outside air Ao supplied from the outside air supply port 53 to be supplied directly to the inlet 44i of the fourth path 44 without being supplied to the underfloor space 5.

[0056] As shown in Figure 3, an outlet 44o formed in the housing 41 is located at the other end of the fourth path 44. One end of an outside air exhaust duct 54 is connected to the outlet 44o in this embodiment. The other end of the outside air exhaust duct 54 is connected to the outside air exhaust port 55 shown in Figure 1. This outside air exhaust port 55 penetrates the foundation 4 and the foundation insulation material 8. With this outside air exhaust duct 54, the outside air Ao discharged from the outlet 44o of the fourth path 44 can be discharged to the outdoors 13 without being supplied to the underfloor space 5.

[0057] [Air supply system] As shown in Figure 1, the air supply device 17 is used to supply underfloor air Au to the space above the floor 6. The air supply device 17 in this embodiment is composed of an air supply path 31 and an air supply fan 32.

[0058] The air supply route 31 is, for example, composed of a duct placed in the piping space of the house 2. The air supply route 31 is not limited to a duct; it may also be composed of a space enclosed by partition walls, etc. (not shown). One end 31a of the air supply route 31 is located in the underfloor space 5. The other end 31b of the air supply route 31 is located in the above-floor space 6. This air supply route 31 allows the underfloor space 5 and the above-floor space 6 to communicate with each other.

[0059] The air supply fan 32 is for pressurizing and sending underfloor air Au to the above-floor space 6 via the air supply path 31. In this embodiment, the air supply fan 32 is located on one end 31a of the air supply path 31, but is not particularly limited. The airflow of the air supply fan 32 can be set as appropriate. In this embodiment, it is preferable that the airflow of the air supply fan 32 be set based on the number of ventilations required for the house 2, similar to the fan 30 (first fan 30a).

[0060] [Function of a residential (dehumidification system)] In the house 2 (dehumidification system 1) of this embodiment, when the dehumidifier 16 is started, the outside air Ao introduced from the supply port 7 is taken into the first path 21 and the second path 22 via the inlets 20 (first inlet 21i and second inlet 22i) shown in Figure 2. In this embodiment, the outside air Ao introduced from the supply port 7 can be smoothly pumped (guided) to the first inlet 21i and the second inlet 22i by the operation of the fan 30 (first fan 30a and second fan 30b).

[0061] As shown in Figure 2, the outside air Ao taken into the first path 21 is cooled by the cooler 23, causing condensation. This allows the outside air Ao to be cooled and dehumidified. The water droplets (not shown) generated by condensation are preferably discharged to the outdoors 13 (shown in Figure 1). Furthermore, the air Ad that has been cooled and dehumidified by the cooler 23 (hereinafter sometimes referred to as "dehumidified air") is heated by the heat sink 26. This allows the relative humidity to be effectively lowered while preventing a drop in the temperature of the dehumidified air.

[0062] The dehumidified air Ad can be discharged from the first exhaust port 21o of the first path 21 to the third path 43 of the sensible heat exchanger 18 shown in Figure 3. On the other hand, air at a lower temperature than the dehumidified air Ad (in this example, outside air Ao) is supplied to the fourth path 44 of the sensible heat exchanger 18. In this embodiment, the outside air Ao is pressurized and sent to the fourth path 44 by the operation of the outside air supply fan 52 shown in Figure 1.

[0063] As shown in Figure 3, heat exchange occurs between the air flowing through the fourth path 44 (outside air Ao) and the dehumidified air Ad flowing through the third path 43 of the sensible heat exchanger 18. As a result, the sensible heat exchanger 18 can supply air (dehumidified air Ad) whose temperature has been lowered while maintaining the absolute humidity of the dehumidified air Ad in the third path 43 to the underfloor space 5 (shown in Figure 1) via the outlet 43o. Furthermore, the outside air Ao, whose temperature has risen due to heat exchange with the dehumidified air Ad, is exhausted to the outdoors 13 shown in Figure 1 via the outside air exhaust duct 54 from the outlet 44o of the fourth path 44, thus preventing an increase in the humidity of the air in the underfloor space 5.

[0064] As shown in Figure 1, the underfloor air Au, which includes dehumidified air Ad supplied from the sensible heat exchanger 18 (i.e., air whose temperature has been reduced while maintaining absolute humidity), can be supplied to the above-floor space 6 via the supply air path 31 by operating the supply air fan 32. As a result, the house 2 (dehumidification system 1) of this embodiment can dehumidify the above-floor space 6 while ventilating it.

[0065] In the house 2 (dehumidification system 1) of this embodiment, a heat pump type dehumidifier 16 is used to dehumidify the outside air Ao. Therefore, compared to the case in which, for example, an air conditioner capable of cooling and dehumidifying operation (not shown) is used, excessive temperature drops in the dehumidified air Ad are prevented, and thus the room temperature in the floor space 6 can be prevented from becoming unnecessarily low.

[0066] Furthermore, in the house 2 (dehumidification system 1) of this embodiment, the dehumidified air Ad, whose temperature has risen due to heating by the radiator 26, is cooled by the sensible heat exchanger 18 while maintaining absolute humidity. By supplying such dehumidified air Ad to the space above the floor 6, it is possible to dehumidify the space above the floor 6 (living room 6A) while effectively suppressing the rise in room temperature in the space above the floor 6 (living room 6A).

[0067] As shown in Figure 2, in the house 2 (dehumidification system 1) of this embodiment, outside air Ao taken in through the second path 22 comes into contact with the compressor 24, which is generating heat due to the compression of the refrigerant, thereby efficiently dissipating heat to the compressor 24. This enables stable operation of the dehumidifier 16 (compressor 24).

[0068] Unlike conventional dehumidifiers (not shown), the dehumidifier 16 of this embodiment allows the air Ae heated by the exhaust heat from the compressor 24 to be discharged from the second exhaust port 22o through the exhaust section 25 to the outside (outdoors 13) of the underfloor space 5 shown in Figure 1. This can suppress the temperature rise of the dehumidified air Ad and underfloor air Au discharged from the first exhaust port 21o. For example, if the temperature of the outside air Ao before dehumidification is around 28-33°C, the temperature of the dehumidified air Ad immediately after exhaust from the dehumidifier 16 (at the first exhaust port 21o) will be around 37-43°C. On the other hand, in conventional dehumidifiers (not shown) that do not have a second path 22 and an exhaust section 25, the temperature of the dehumidified air (not shown) immediately after exhaust becomes high (around 43-48°C) due to the influence of the exhaust heat (heated air Ae) from the compressor 24. Furthermore, in order to prevent heated air Ae from being directly introduced into the supply port 7 (so-called short circuit), it is preferable that the discharge port 25o be installed at a certain distance from the supply port 7 (preferably at a distance of 90 cm or more from the supply port 7).

[0069] Thus, in the house 2 (dehumidification system 1) of this embodiment, the air Ae heated by the exhaust heat from the compressor 24 is discharged to the outside of the underfloor space 5 shown in Figure 1 (outdoors 13 in this example), which can suppress the temperature rise of the underfloor air Au, including the dehumidified air Ad. Therefore, the house 2 (dehumidification system 1) of this embodiment can dehumidify the upper floor space 6 (living room 6A) while suppressing the rise in the room temperature of the upper floor space 6 (living room 6A) to which the underfloor air Au (including the dehumidified air Ad) is supplied.

[0070] As shown in Figure 2, in this embodiment, the partition 27 prevents the air Ae from the second path 22 from mixing with the first path 21. This minimizes the impact of the exhaust heat from the compressor 24 on the dehumidified air Ad. Therefore, the house 2 (dehumidification system 1) of this embodiment can effectively prevent the rise in room temperature in the floor space 6 (living room 6A). To effectively achieve this effect, the housing 29 including the partition 27 may be fitted with an insulating material (e.g., polystyrene foam).

[0071] The inlets 20 (first inlets 21i and second inlets 22i) may be provided adjacent to the supply port 7 (first portion 4A), as shown in Figure 1. This allows the outside air Ao introduced from the supply port 7 to be dehumidified before it is introduced into the underfloor space 5, or at an early stage after it has been introduced into the underfloor space 5, and the dehumidified air Ad can be supplied to the underfloor space 5 via the sensible heat exchanger 18. This allows for efficient dehumidification of the above-floor space 6 while suppressing condensation in the underfloor space 5.

[0072] It is preferable that the inlets 20 (first inlets 21i and second inlets 22i) are positioned to face the supply port 7 (first portion 4A). This allows the outside air Ao introduced from the supply port 7 to be directly dehumidified before it is introduced into the underfloor space 5. This allows for efficient dehumidification of the above-floor space 6 while effectively suppressing condensation in the underfloor space 5.

[0073] Furthermore, in the house 2 (dehumidification system 1) of this embodiment, for example, the operation of the dehumidifier 16 is stopped during seasons when dehumidification is not required. In this case, the outside air Ao taken in through the first path 21 is supplied from the first exhaust port 21o to the sensible heat exchanger 18 (third path 43) shown in Figure 2 without being dehumidified. Furthermore, the outside air Ao supplied to the third path 43 of the sensible heat exchanger 18 is supplied to the underfloor space 5 (shown in Figure 1) via the outlet 43o. Then, the underfloor air Au, including the outside air Ao, is supplied to the above-floor space 6 via the supply air path 31 by the operation of the supply air fan 32 shown in Figure 1. As a result, in the house 2 (dehumidification system 1) of this embodiment, it is possible to ventilate the above-floor space 6 without dehumidifying it.

[0074] Since the outside air Ao supplied to the third path 43 of the sensible heat exchanger 18 is not heated by the radiator 26 of the dehumidifier 16, there is no need to lower its temperature using the sensible heat exchanger 18. For this reason, from the viewpoint of improving energy efficiency, the operation of the outside air supply fan 52 of the sensible heat exchanger 18 shown in Figure 1 may be stopped.

[0075] The outside air Ao taken into the second path 22 of the dehumidifier 16 shown in Figure 2 can be discharged directly to the outside of the underfloor space 5 (in this example, the outdoors 13). The second fan 30b, which pumps the outside air Ao into the second path 22, may be stopped from operation for energy-saving purposes.

[0076] [Heat exchange pathway] As shown in Figure 1, the house 2 of this embodiment may further include a heat exchange path 34 for exchanging heat between the air (dehumidified air Ad) supplied from the sensible heat exchanger 18 to the underfloor space 5 and the geothermal heat H. As described above, in the ground 10 (floor concrete slab 11) of this embodiment, heat exchange between the underfloor air Au and the geothermal heat H is possible. Furthermore, in this embodiment, the sensible heat exchanger 18 is located on the first section 4A side, and the air supply device 17 (air supply fan 32) and one end 31a of the air supply path 31 are located on the second section 4B side, so they are spaced apart. Therefore, the underfloor air Au, including the dehumidified air Ad supplied from the sensible heat exchanger 18 to the underfloor space 5, is guided to the air supply device 17 while exchanging heat with the geothermal heat H in the ground 10 (floor concrete slab 11). As a result, a heat exchange path 34 for exchanging heat between dehumidified air Ad and geothermal heat H can be formed between the sensible heat exchanger 18 and the air supply device 17 within the underfloor space 5.

[0077] Through this heat exchange path 34, heat exchange can take place between the dehumidified air Ad (for example, around 31-36°C) whose temperature has been lowered by the sensible heat exchanger 18 and the geothermal heat H (for example, around 10-20°C). This can further lower the temperature of the dehumidified air Ad. When this underfloor air Au, containing the dehumidified air Ad, is supplied to the above-floor space 6 via the air supply device 17, it becomes possible to dehumidify the space while effectively suppressing the rise in room temperature in the above-floor space 6.

[0078] [Methods for dehumidifying homes] Next, the dehumidification method for house 2 (hereinafter sometimes referred to as the "dehumidification method") will be described. In the dehumidification method of this embodiment, house 2 is dehumidified using the dehumidification system 1 (including a heat pump type dehumidifier 16, an air supply device 17, and a sensible heat exchanger 18) shown in Figures 1, 2, and 3.

[0079] [Control device] The dehumidification method in this embodiment is carried out by the control device 35, but is not particularly limited and may be carried out by the occupants. The control device 35 in this embodiment constitutes part of the dehumidification system 1. This control device 35 is capable of controlling the heat pump type dehumidifier 16, the air supply device 17 (air supply fan 32), the fan 30 (first fan 30a and second fan 30b), and the outside air supply fan 52 (sensible heat exchanger 18). Furthermore, the control device 35 may also be capable of controlling the exhaust fan 15. The control device 35 in this embodiment is composed of a computer and is installed, for example, in a partition wall.

[0080] Figure 4 is a conceptual diagram showing an example of the configuration of the control device 35. The control device 35 is composed of, for example, an arithmetic unit (CPU) 36, a storage device 37 for storing processing procedures, etc., and a working memory 38 for reading processing procedures, etc., from the storage device 37.

[0081] The control device 35 (arithmetic unit 36) is connected to an input device 39 and an output device 40. The input device 39 consists of operation buttons, a touch panel, etc. (not shown) provided on the housing of the control device 35 shown in Figure 1. Through such an input device 39, data (information) entered by, for example, a user (resident), can be transmitted to the control device 35. On the other hand, the output device 40 consists of a display (not shown) provided on the housing of the control device 35 shown in Figure 1. When data from the control device 35 is received by such an output device 40, the operating status of the dehumidification system 1 (including the dehumidifier 16, the air supply device 17 (air supply fan 32), and the fan 30, etc.) can be displayed.

[0082] [Arithmetic device] The computing device 36 in this embodiment is composed of, for example, a CPU (Central Processing Unit). The computing device 36 in this embodiment is communicatively connected to the exhaust fan 15, the dehumidifier 16, the fan 30 (first fan 30a and second fan 30b), the supply fan 32, and the outside air supply fan 52. As a result, the operating status of the exhaust fan 15, the dehumidifier 16, the fan 30, the supply fan 32, and the outside air supply fan 52 can be grasped by the computing device 36. Furthermore, the operation of the exhaust fan 15, the dehumidifier 16, the fan 30, the supply fan 32, and the outside air supply fan 52 (including, for example, starting and stopping operation) can be controlled by the computing device 36. Figure 5 is a flowchart showing an example of the processing procedure for a residential dehumidification method.

[0083] [Introduce outside air into the supply port] In the dehumidification method of this embodiment, first, outside air Ao is introduced into the supply port 7 provided in the foundation 4 shown in Figure 1 (step S1). In step S1 of this embodiment, the control device 35 starts the operation of the fan 30 (first fan 30a and second fan 30b). If the fan 30 has already started operating, the fan 30 will continue to operate.

[0084] In step S1 of this embodiment, outside air Ao can be introduced into the supply port 7 by starting operation of the fan 30 (first fan 30a and second fan 30b). The outside air Ao introduced into the supply port 7 can be supplied to the inlets (first inlet 21i and second inlet 22i) of the dehumidifier 16 shown in Figure 2. The airflow of the fan 30 can be set, for example, based on the number of ventilations required for the house 2. Note that if the house 2 is not equipped with a fan 30, operation of the fan 30 may be omitted.

[0085] [Determine whether it is currently summer or not] Next, in the dehumidification method of this embodiment, as shown in Figure 5, it is determined whether the current season is summer or not (step S2). In this embodiment, the control device 35 shown in Figures 1 and 4 determines whether the current season is summer or not, but this is not particularly limited, and may be done, for example, by the resident of the house 2.

[0086] The current season may be determined, for example, based on a calendar stored in the control device 35, or based on the temperature of the outside air Ao shown in Figure 1. The period corresponding to summer is set appropriately according to the region of the house 2. In this embodiment, June to August is considered summer and September to May is considered the non-summer season, but this is not particularly limited.

[0087] If it is determined that the current season is summer (Yes in step S2), then it is determined that the outside air Ao is hot and humid, and that dehumidification is necessary in house 2. In this case, steps S3 to S6 are performed. Note that the order in which steps S3 to S6 are performed is not particularly limited; for example, they may be performed simultaneously.

[0088] On the other hand, if it is determined that the current season is not summer (No in step S2), it is determined that dehumidification is not necessary in house 2. In this case, steps S7 to S8 are performed. Note that the order in which steps S7 to S8 are performed is not particularly limited; for example, they may be performed simultaneously.

[0089] [Dehumidifying the outside air with a heat pump type dehumidifier] Next, the dehumidification method of this embodiment uses a heat pump type dehumidifier 16 located in the underfloor space 5 shown in Figure 1 to dehumidify the outside air Ao introduced from the supply port 7 (step S3). In step S3 of this embodiment, the control device 35 starts the operation of the heat pump type dehumidifier 16. If the operation of the dehumidifier 16 has already started, the dehumidifier 16 will continue to operate.

[0090] In step S3 of this embodiment, the outside air Ao introduced from the supply port 7 is taken into the first path 21 via the inlet (first inlet 21i) of the dehumidifier 16 shown in Figure 2, due to the operation of the fan 30 (first fan 30a) in step S1.

[0091] The outside air Ao taken into the first path 21 is cooled by the cooler 23, causing condensation. This allows the outside air Ao to be cooled and dehumidified. Furthermore, the cooled and dehumidified outside air Ao is heated by the heat exchanger 26. This allows the relative humidity of the dehumidified air Ad to be effectively lowered. The dehumidified air Ad can be supplied from the first exhaust port 21o of the first path 21 to the third path 43 of the sensible heat exchanger 18 shown in Figure 3. In addition, it is preferable that the water droplets (not shown) generated by condensation are discharged to the outdoors 13 (shown in Figure 1), for example.

[0092] [Dehumidified air, whose temperature has been lowered by a sensible heat exchanger, is supplied to the underfloor space.] Next, in the dehumidification method of this embodiment, as shown in Figure 1, dehumidified air (dehumidified air Ad) is supplied to the underfloor space 5 with its temperature lowered while maintaining its absolute humidity (step S4). In step S4 of this embodiment, a sensible heat exchanger 18 located in the underfloor space 5 is used.

[0093] In step S4 of this embodiment, the outside air supply fan 52 is operated to pump outside air Ao into the fourth path 44, as shown in Figure 3. Heat exchange takes place between the air flowing through this fourth path 44 (outside air Ao) and the dehumidified air Ad flowing through the third path 43 of the sensible heat exchanger 18. As a result, in step S4, the dehumidified air Ad, whose temperature has been lowered while maintaining its absolute humidity in the third path 43, can be supplied to the underfloor space 5 shown in Figure 1 via the outlet 43o.

[0094] The outside air Ao, whose temperature has risen due to heat exchange with the dehumidified air Ad, is exhausted to the outdoors 13 via the outside air exhaust duct 54 from the outlet 44o of the fourth path 44 (shown in Figure 3). This prevents the humidity of the air in the underfloor space 5 from rising in this dehumidification method. In order to prevent the outside air Ao (whose temperature has risen due to heat exchange with the dehumidified air Ad) exhausted to the outdoors 13 from the outside air exhaust duct 54 from being directly introduced into the fourth path 44 via the outside air supply duct 51 from the outside air supply port 53 (so-called short circuit), it is preferable that the outside air exhaust port 55 be installed at a certain distance from the outside air supply port 53 (preferably at a distance of 90 cm or more from the outside air supply port 53).

[0095] [The compressor's exhaust heat is discharged to the outside of the underfloor space.] Next, in the dehumidification method of this embodiment, as shown in Figure 1, air Ae heated by the exhaust heat from the compressor 24 of the heat pump type dehumidifier 16 is discharged to the outside of the underfloor space 5 (step S5). In step S5 of this embodiment, the outside air Ao introduced from the supply port 7 is taken into the second path 22 via the inlet of the dehumidifier 16 (second inlet 22i) shown in Figure 2, due to the operation of the fan 30 (second fan 30b) in step S1.

[0096] The outside air Ao taken into the second path 22 comes into contact with the compressor 24, which is generating heat due to the compression of the refrigerant, allowing the compressor 24 to efficiently dissipate heat. The air Ae heated by the heat dissipated from the compressor 24 can be discharged from the second exhaust port 22o through the exhaust section 25 to the outside (outdoors 13) of the underfloor space 5 shown in Figure 1. This enables stable operation of the dehumidifier 16 (compressor 24) while suppressing the temperature rise of the underfloor air Au, which includes the dehumidified air Ad.

[0097] [Supplying air from the underfloor space to the space above the floor] Next, in the dehumidification method of this embodiment, as shown in Figure 1, the air (underfloor air) Au from the underfloor space 5 is supplied to the upper floor space 6 (step S6). In step S6 of this embodiment, the control device 35 starts the operation of the supply air fan 32 of the supply air device 17. If the supply air fan 32 has already started operating, it continues to operate. The airflow of the supply air fan 32 can be set, for example, based on the number of ventilations required for the house 2.

[0098] In step S6, the operation of the supply fan 32 supplies underfloor air Au, which includes dehumidified air (dehumidified air whose temperature has been lowered while maintaining absolute humidity) Ad supplied from the sensible heat exchanger 18, to the above-floor space 6 via the supply path 31.

[0099] [Mechanisms of dehumidification methods for homes] In this embodiment, steps S3 to S6 allow underfloor air Au, which contains dehumidified air Ad obtained by dehumidifying the outside air Ao, to be supplied to the above-floor space 6 during the summer when dehumidification is necessary. As a result, the dehumidification method of this embodiment can dehumidify the above-floor space 6 while ventilating it. Furthermore, in the dehumidification method of this embodiment, a heat pump type dehumidifier 16 is used to dehumidify the outside air Ao, so compared to the case in which, for example, an air conditioner (not shown) capable of cooling and dehumidifying operation is used, excessive temperature drops in the dehumidified air Ad are prevented. Therefore, in the dehumidification method of this embodiment, it is possible to suppress the room temperature of the above-floor space 6 from becoming unnecessarily low.

[0100] Furthermore, in this embodiment, the dehumidified air Ad is cooled by the sensible heat exchanger 18 while maintaining its absolute humidity. By supplying this underfloor air Au, which includes the dehumidified air Ad, to the above-floor space 6, it becomes possible to dehumidify the above-floor space 6 (living room 6A) while suppressing the rise in room temperature in the above-floor space 6 (living room 6A).

[0101] Furthermore, in the dehumidification method of this embodiment, the air Ae heated by the exhaust heat from the compressor 24 of the dehumidifier 16 is discharged to the outside of the underfloor space 5, thereby suppressing the temperature rise of the underfloor air Au, which includes the dehumidified air Ad. Therefore, the dehumidification method of this embodiment makes it possible to dehumidify the upper floor space 6 (living room 6A) while effectively suppressing the rise in the room temperature of the upper floor space 6 (living room 6A) to which the underfloor air Au is supplied.

[0102] Furthermore, in the dehumidification method of this embodiment, the dehumidified air Ad supplied from the sensible heat exchanger 18 is heat-exchanged with geothermal heat H in the heat exchange path 34. As a result, the temperature of the dehumidified air Ad, which has been reduced in the sensible heat exchanger 18, can be further reduced in temperature by the geothermal heat H. By supplying the underfloor air Au containing such dehumidified air Ad to the above-floor space 6, it becomes possible to dehumidify the above-floor space 6 (living room 6A) while more effectively suppressing the rise in room temperature in the above-floor space 6.

[0103] Furthermore, in the dehumidification method of this embodiment, for example, in any of steps S3 to S6, the control device 35 may start operating the exhaust fan 15. As a result, the floor air Ai is discharged to the outdoors 13, and the floor space 6 can be efficiently ventilated.

[0104] [Stopping operation of the heat pump dehumidifier] Next, in the dehumidification method of this embodiment, as shown in Figure 5, if it is determined that the current season is not summer (No in step S2), the operation of the heat pump type dehumidifier 16 shown in Figure 1 is stopped (step S7). In step S7 of this embodiment, the control device 35 stops the operation of the dehumidifier 16. If the operation of the dehumidifier 16 has already been stopped, the operation of the dehumidifier 16 will continue to be stopped.

[0105] In this embodiment, the operation of the first fan 30a and the second fan 30b in step S1 causes the outside air Ao introduced from the supply port 7 to be taken into the first path 21 and the second path 22 via the first inlet 21i and the second inlet 22i of the dehumidifier 16 shown in Figure 2.

[0106] The outside air Ao taken in through the first path 21 is supplied from the first exhaust port 21o shown in Figure 2 to the third path 43 of the sensible heat exchanger 18 shown in Figure 3, without being cooled by the cooler 23 or heated by the heat exchanger 26. This prevents the outside air Ao from being dehumidified during seasons when dehumidification is not required. On the other hand, the outside air Ao taken in through the second path 22 shown in Figure 2 can be discharged to the outside of the underfloor space 5 (outdoors 13 in this example). The second fan 30b may be turned off from the viewpoint of energy saving.

[0107] Furthermore, the outside air Ao supplied to the third path 43 of the sensible heat exchanger 18 shown in Figure 3 is supplied to the underfloor space 5 (shown in Figure 1) via the outlet 43o. Note that the outside air Ao supplied to the third path 43 of the sensible heat exchanger 18 is not heated by the radiator 26 of the dehumidifier 16 shown in Figure 1, so there is no need to lower its temperature using the sensible heat exchanger 18. For this reason, from the viewpoint of improving energy efficiency, the operation of the outside air supply fan 52 of the sensible heat exchanger 18 may be stopped.

[0108] [Supplying air from the underfloor space to the space above the floor] Next, in the dehumidification method of this embodiment, the air in the underfloor space 5 (underfloor air) Au is supplied to the upper floor space 6 (step S8). In step S8 of this embodiment, the control device 35 starts the operation of the supply air fan 32 of the supply air device 17. If the supply air fan 32 has already started operating, it continues to operate. As a result, the underfloor air Au, which includes undehumidified outside air Ao, is supplied to the upper floor space 6 via the supply air path 31. The airflow of the supply air fan 32 can be set, for example, based on the number of ventilations required for the house 2.

[0109] In the dehumidification method of this embodiment, steps S7 and S8 make it possible to ventilate the floor space 6 without dehumidifying it during seasons when dehumidification is not required. Furthermore, in the dehumidification method of this embodiment, prior to the supply of underfloor air Au to the floor space 6, the air (outside air) Ao supplied from the sensible heat exchanger 18 is heat-exchanged with geothermal heat H in the heat exchange path 34. As a result, for example, in winter when dehumidification is not required, the low-temperature outside air Ao can be warmed by the geothermal heat H. By supplying such outside air Ao to the floor space 6, the floor space 6 can be ventilated while preventing drying of the floor space 6 and an increase in the air conditioning load.

[0110] Furthermore, in the dehumidification method of this embodiment, for example, in either step S7 or step S8, the control device 35 may start operating the exhaust fan 15. As a result, the floor air Ai is discharged to the outdoors 13, and the floor space 6 can be efficiently ventilated.

[0111] [Determine whether or not there is an instruction to stop the dehumidification system.] Next, in the dehumidification method of this embodiment, the control device 35 determines whether or not there is an instruction to stop the operation of the dehumidification system 1 (including the heat pump type dehumidifier 16, the air supply fan 32, and the outside air supply fan 52) (step S9). The determination of whether or not there is an instruction to stop operation is made, for example, based on instruction information entered by a user (resident) or the like into the input device 39 (shown in Figure 4) or the occurrence of an abnormal termination such as an interrupt process.

[0112] If it is determined that there is an instruction to stop operation ("Yes" in step S9), step S10 is performed to stop the operation of the dehumidification system 1 shown in Figure 1. On the other hand, if it is determined that there is no instruction to stop operation ("No" in step S9), steps S2 to S9 are performed again.

[0113] In the dehumidification method of this embodiment, steps S2 to S9 shown in Figure 5 are performed again, thereby switching the start and stop of the heat pump type dehumidifier 16 operation according to the current season. As a result, in the summer when dehumidification is necessary, it is possible to dehumidify the floor space 6 while suppressing the rise in room temperature in the floor space 6. On the other hand, in seasons when dehumidification is not necessary (such as winter), unnecessary dehumidification is prevented, so it is possible to ventilate while preventing the floor space 6 from drying out and increasing the air conditioning load.

[0114] [Stop the dehumidification system] Next, in the dehumidification method of this embodiment, the operation of the dehumidification system 1 shown in Figure 1 is stopped (step S10). In step S10 of this embodiment, the control device 35 stops the operation of the dehumidifier 16. If the operation of the dehumidifier 16 has already been stopped, the operation of the dehumidifier 16 will continue to be stopped. In addition, the operation of the supply fan 32, fan 30 and exhaust fan 15 may continue in order to continue ventilating the space above the floor 6.

[0115] Although particularly preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be implemented in various modified forms.

[0116] [Note] The present invention includes the following embodiments.

[0117] [Invention 1] It is a house, A floor, a foundation, and an underfloor space partitioned by the floor, the foundation, and the ground, A space above the floor, A supply port is provided in the aforementioned foundation and for introducing outside air into the underfloor space, A heat pump type dehumidifier is placed in the underfloor space and is used to dehumidify the outside air introduced from the supply port, A sensible heat exchanger is placed in the underfloor space and supplies air to the underfloor space with the temperature reduced while maintaining the absolute humidity of the dehumidified air. Includes an air supply device for supplying air from the underfloor space to the above-floor space, A house. [Invention 2] The aforementioned dehumidifier is The inlet for taking in outside air introduced from the supply port, A first path communicating from the aforementioned inlet to the first exhaust port, A second path that communicates from the aforementioned inlet to the second exhaust port, A cooler provided in the first path and using a refrigerant for dehumidifying the outside air, A compressor provided in the second path for compressing the refrigerant, The house according to the present invention 1, further comprising an exhaust unit that connects the second exhaust port to the outside of the underfloor space. [Invention 3] The dehumidifier includes a partition to prevent air from the second path from mixing with the first path, as described in the second version of the present invention. [4th Invention] The dwelling according to the present invention 2 or 3, wherein the dehumidifier is provided in the first path and includes a heat radiator using the refrigerant for heating the air cooled by the cooler. [5th ​​Invention] A house according to any one of inventions 2 to 4, further comprising a fan for pressurizing the outside air to the inlet of the dehumidifier. [Invention 6] A house according to any one of claims 1 to 5 of the present invention, further comprising a heat exchange path for exchanging heat with geothermal energy for the air supplied from the sensible heat exchanger to the underfloor space. [7th Invention] A floor, a foundation, and an underfloor space partitioned by the floor, the foundation, and the ground, A space above the floor, A dehumidification system provided in a house, comprising: a foundation provided therein and a supply port for introducing outside air into the underfloor space, A heat pump type dehumidifier is placed in the underfloor space and is used to dehumidify the outside air introduced from the supply port, A sensible heat exchanger is placed in the underfloor space and supplies air to the underfloor space with the temperature reduced while maintaining the absolute humidity of the dehumidified air. Includes an air supply device for supplying air from the underfloor space to the above-floor space, Dehumidification system. [8th Invention] A floor, a foundation, and an underfloor space partitioned by the floor, the foundation, and the ground, A space above the floor, A method for dehumidifying a house, comprising: a foundation provided therein and a supply port for introducing outside air into the underfloor space, The steps include: using a heat pump type dehumidifier placed in the underfloor space to dehumidify the outside air introduced from the supply port; The steps include supplying air to the underfloor space using a sensible heat exchanger located in the underfloor space, which maintains the absolute humidity of the dehumidified air while lowering its temperature, The step includes supplying the air from the underfloor space to the above-floor space, Methods for dehumidifying a house. [Explanation of symbols]

[0118] 2 Housing 5 Underfloor space 6 Above-floor space 7 Supply port 16 Dehumidifier 17. Air supply system 18 Sensible heat exchanger

Claims

1. It is a house, A floor, a foundation, and an underfloor space partitioned by the floor, the foundation, and the ground, A space above the floor, A supply port is provided in the aforementioned foundation and for introducing outside air into the underfloor space, A heat pump type dehumidifier is placed in the underfloor space and is used to dehumidify the outside air introduced from the supply port, A sensible heat exchanger is placed in the underfloor space and supplies air to the underfloor space with the temperature reduced while maintaining the absolute humidity of the dehumidified air. Includes an air supply device for supplying air from the underfloor space to the above-floor space, A house.

2. The aforementioned dehumidifier is The inlet for taking in outside air introduced from the supply port, A first path communicating from the aforementioned inlet to the first exhaust port, A second path communicating from the aforementioned inlet to the second exhaust port, A cooler provided in the first path and using a refrigerant for dehumidifying the outside air, A compressor provided in the second path for compressing the refrigerant, The dwelling according to claim 1, further comprising an exhaust unit that connects the second exhaust port to the outside of the underfloor space.

3. The dwelling according to claim 2, wherein the dehumidifier includes a partition to prevent the air from the second path from mixing with the air from the first path.

4. The dwelling according to claim 2, wherein the dehumidifier is provided in the first path and includes a radiator using the refrigerant for heating the air cooled by the cooler.

5. The dwelling according to claim 2, further comprising a fan for pressurizing the outside air to the inlet of the dehumidifier.

6. The house according to claim 2, further comprising a heat exchange path for exchanging heat with geothermal energy for the air supplied from the sensible heat exchanger to the underfloor space.

7. A floor, a foundation, and an underfloor space partitioned by the floor, the foundation, and the ground, A space above the floor, A dehumidification system provided in a house, comprising: a foundation provided therein and a supply port for introducing outside air into the underfloor space, A heat pump type dehumidifier is placed in the underfloor space and is used to dehumidify the outside air introduced from the supply port, A sensible heat exchanger is placed in the underfloor space and supplies air to the underfloor space with the temperature reduced while maintaining the absolute humidity of the dehumidified air. Includes an air supply device for supplying air from the underfloor space to the above-floor space, Dehumidification system.

8. A floor, a foundation, and an underfloor space partitioned by the floor, the foundation, and the ground, A space above the floor, A method for dehumidifying a house, comprising: a foundation provided therein and a supply port for introducing outside air into the underfloor space, The steps include: using a heat pump type dehumidifier placed in the underfloor space to dehumidify the outside air introduced from the supply port; The steps include supplying air to the underfloor space using a sensible heat exchanger located in the underfloor space, which maintains the absolute humidity of the dehumidified air while lowering its temperature, The step includes supplying the air from the underfloor space to the above-floor space, Methods for dehumidifying a house.

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