Humidification system

Abstract

To improve humidification capacity of humidifying air that is taken from the outdoor and to be supplied into an indoor space.SOLUTION: A humidification system includes: an air supply part for taking air from the outdoor and supplying the air into an indoor space; an exhaust part for discharging air from the indoor space to the outdoor; a heating part for heating water that is supplied from water service piping; a water supply part for supplying the water that is heated by the heating part from the heating part to a facility that uses hot water and the air supply part; and a humidification part for humidifying the air that is supplied from the air supply part into the indoor space using the water that is supplied by the water supply part toward the air supply part.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Patent document 1 discloses a floor heating system including a floor heating panel, a heat source unit that supplies hot water to the floor heating panel, a floor heating controller, and a humidity regulator, wherein the floor heating controller is equipped with a room temperature sensor, a humidity sensor, and a means for transmitting an on / off signal to the humidity regulator, the humidity regulator is equipped with a means for receiving an on / off signal from the floor heating controller, and further comprises a means for maintaining specified comfortable indoor environmental conditions by performing hot water supply control and humidity control based on the detection values ​​of the room temperature sensor and humidity sensor of the floor heating controller. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-32888 A Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 is a technology for humidifying a room in which a floor heating panel is placed in a floor heating system, and does not perform humidification in a ventilation system. In addition, Patent Document 1 uses a humidifier installed in the room in which the floor heating panel is placed, and since it is necessary to refill the water supply tank of the humidifier with water, there is a limit to the humidifying capacity to continuously humidify a large amount of air.

[0005] An object of the present invention is to improve the humidifying capacity of air conditioners for humidifying air taken in from outdoors and supplied to an indoor space. [Means for solving the problem]

[0006] The first aspect includes an air supply unit that takes in air from outdoors and supplies it to an indoor space, an exhaust unit that exhausts air from the indoor space to outdoors, a heating unit that heats water supplied from a water pipe, a water supply unit that sends the water heated by the heating unit from the heating unit to equipment that uses hot water and the air supply unit, and a humidification unit that uses the water sent by the water supply unit to the air supply unit to humidify the air supplied to the indoor space from the air supply unit.

[0007] According to the first aspect, the air supply unit takes in air from outdoors and supplies it to the indoor space, and the exhaust unit exhausts air from the indoor space to outdoors. The heating unit heats water supplied from a water pipe, and the water supply unit sends water from the heating unit to equipment that uses the hot water and to the air supply unit. The humidification unit uses the water sent by the water supply unit to the air supply unit to humidify the air supplied to the indoor space from the air supply unit.

[0008] In this way, in the first aspect, the water supply unit sends water supplied from the water pipe and heated from the heating unit to the air supply unit, and the water is used to humidify the air supplied from the air supply unit to the indoor space. Therefore, the air can be humidified continuously and in large quantities compared to when the air supplied to the indoor space is humidified using a humidifier installed in the indoor space and which needs to be replenished with water. Therefore, according to the first aspect, the humidifying capacity for humidifying the air taken in from outdoors and supplied to the indoor space can be improved.

[0009] The second aspect is the first aspect, further comprising a detection unit that detects the relative humidity and temperature of the air discharged from the indoor space to the outdoors by the exhaust unit, and a control unit that calculates absolute humidity from the relative humidity and temperature detected by the detection unit and controls the humidification unit so that the absolute humidity becomes a target absolute humidity.

[0010] According to the second aspect, the control unit controls the humidifier so that the absolute humidity of the air discharged from the indoor space to the outdoors becomes the target absolute humidity. Therefore, the air can be humidified to an appropriate humidity level according to the absolute humidity of the air discharged from the indoor space to the outdoors.

[0011] The third aspect is the first aspect, further comprising a detection unit that detects the relative humidity of the air discharged from the indoor space to the outdoors by the exhaust unit, and a control unit that controls the humidification unit so that the relative humidity detected by the detection unit becomes a target relative humidity.

[0012] According to the third aspect, the control unit controls the humidifier so that the relative humidity of the air discharged from the indoor space to the outdoors becomes the target relative humidity. Therefore, the air can be humidified to an appropriate humidity level according to the relative humidity of the air discharged from the indoor space to the outdoors.

[0013] The fourth aspect is the first aspect, further comprising a detection unit that detects the relative humidity and temperature of the indoor space, and a control unit that calculates the absolute humidity from the relative humidity and temperature detected by the detection unit and controls the humidification unit so that the absolute humidity becomes a target absolute humidity.

[0014] According to the fourth aspect, the control unit controls the humidifier unit so that the absolute humidity in the indoor space becomes the target absolute humidity. Therefore, the air can be humidified to an appropriate humidity level according to the absolute humidity in the indoor space.

[0015] A fifth aspect is the air conditioner of the first aspect, further comprising a detection unit that detects a relative humidity in the indoor space, and a control unit that controls the humidifier so that the relative humidity detected by the detection unit becomes a target relative humidity.

[0016] According to the fifth aspect, the control unit controls the humidifier unit so that the relative humidity of the indoor space becomes the target absolute humidity. Therefore, the air can be humidified to an appropriate humidity level according to the relative humidity of the indoor space.

[0017] In a sixth aspect, in the first aspect, the air supply unit has a branch duct that branches off to each of the multiple indoor spaces and supplies air to each of the multiple indoor spaces, and the humidifier unit humidifies the air supplied to each of the multiple indoor spaces in one go, upstream of the branch duct.

[0018] According to the sixth aspect, the humidifier humidifies the air supplied to each of the multiple indoor spaces collectively upstream of the branch ducts branching into each of the multiple indoor spaces. Therefore, compared to the case where the air supplied to each of the multiple indoor spaces is individually humidified, the number of points where moisture is supplied to the air can be reduced, and the number of parts of the humidifier can be reduced.

[0019] In a seventh aspect, in the first aspect, the air supply unit has a branch duct that branches off to each of the multiple indoor spaces and supplies air to each of the multiple indoor spaces, and the humidification unit individually humidifies the air supplied to each of the multiple indoor spaces in the branch duct.

[0020] According to the seventh aspect, the humidifying unit humidifies the air supplied to each of the indoor spaces in the branch ducts that branch off to each of the indoor spaces, individually. Therefore, the humidity of each of the indoor spaces can be adjusted individually, compared to when the air supplied to each of the indoor spaces is humidified collectively. Effect of the Invention

[0021] Since the present invention has the above-mentioned configuration, it is possible to improve the humidifying capacity for humidifying air taken in from outdoors and supplied to an indoor space. [Brief description of the drawings]

[0022] [Figure 1] 1 is a schematic diagram illustrating an example of a humidification system according to an embodiment of the present invention. [Diagram 2] 1 is a schematic diagram showing an example of a heat exchange device and its peripheral configuration of a humidification system according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a block diagram showing an example of a control device of the humidification system according to the present embodiment. [Figure 4] 2 is a block diagram showing an example of a functional configuration of a processor in the control device of the humidification system according to the present embodiment. FIG. [Diagram 5] FIG. 11 is a schematic diagram illustrating an example of a humidification system according to a modified example. [Figure 6]FIG. 11 is a schematic diagram illustrating an example of a humidifier in a humidification system according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

[0024] <Humidification System 10> A humidification system 10 according to this embodiment will be described below. Fig. 1 is a schematic diagram showing an example of a humidification system 10 according to this embodiment.

[0025] The humidification system 10 shown in Fig. 1 is a system that supplies air from an outdoor area 90 to an indoor space 92 and humidifies the air. As shown in Fig. 1, the humidification system 10 includes a ventilation system 12, a hot water supply system 40, a humidifier 70, and a control device 60. Each part of the humidification system 10 will be described below.

[0026] <Ventilation System 12> 1 is a system that takes in air from the outdoors 90 and expels air from an indoor space 92. That is, the ventilation system 12 is a system that replaces air in the indoor space 92 with air from the outdoors 90. The indoor space 92 may be, for example, a living room 92A, a bedroom 92B, or the like.

[0027] Here, there are three types of ventilation systems: Type 1 ventilation, Type 2 ventilation, and Type 3 ventilation. Type 1 ventilation is a system that performs mechanical ventilation for both intake and exhaust air. Type 2 ventilation is a system that performs mechanical ventilation for the intake air, out of the intake and exhaust air. Type 3 ventilation is a system that performs mechanical ventilation for the exhaust, out of the intake and exhaust air.

[0028] The ventilation system 12 is, for example, a ventilation system that employs the first type ventilation method among the first type ventilation method, the second type ventilation method, and the third type ventilation method. Specifically, the ventilation system 12 has an air intake section 20, an exhaust section 30, and a heat exchanger 16, as shown in FIG.

[0029] The air supply section 20 is a component that takes in air from the outdoors 90 and supplies it to an indoor space 92. Specifically, as shown in FIG. 1, the air supply section 20 has an air supply duct 21, a branch duct 22, an air supply fan 24 (see FIG. 2), and a filter 25.

[0030] Air supply duct 21 is composed of a pipe having one end connected to the outdoors 90 and the other end connected to heat exchanger 16. Air supply duct 21 takes in air from the outdoors 90 through intake port 21A provided at one end, and sends the air to heat exchanger 16. Filter 25 is attached to air supply duct 21, and removes foreign matter that has become mixed in the air sent from the outdoors 90 to heat exchanger 16.

[0031] The branch duct 22 is composed of multiple pipes branching off from the heat exchange device 16, with one end connected to the heat exchange device 16 and the other end connected to each of the multiple indoor spaces 92. This branch duct 22 supplies air from the heat exchange device 16 to each of the multiple indoor spaces 92 through an air supply port 22A provided at the other end.

[0032] The supply air fan 24 shown in FIG. 2 is provided in the heat exchange device 16, and when the supply air fan 24 is operated, the air from the outside 90 is sent to each of the indoor spaces 92 through the supply air duct 21 and the branch duct 22.

[0033] The exhaust unit 30 is a component that exhausts air from an indoor space 92 to the outdoors 90. Specifically, as shown in Fig. 1, the exhaust unit 30 has an exhaust duct 31, a branch duct 32, and an exhaust fan 34 (see Fig. 2).

[0034] The branch duct 32 is composed of a plurality of pipes branching off from the heat exchange device 16, with one end connected to each of the plurality of indoor spaces 92 and the other end connected to the heat exchange device 16. This branch duct 32 takes in air from each of the plurality of indoor spaces 97 through an intake port 32A provided at one end, and sends the air to the heat exchange device 16. The indoor spaces 97 include a washroom 97C and a bathroom 97D.

[0035] The exhaust duct 31 is configured with a pipe having one end connected to the heat exchange device 16 and the other end connected to the outdoors 90. The exhaust duct 31 exhausts the air from the heat exchange device 16 to the outdoors 90 through an exhaust port 31A provided at the other end.

[0036] The exhaust fan 34 shown in FIG. 2 is provided in the heat exchange device 16, and when the exhaust fan 34 is operated, the air in the indoor space 92 is exhausted to the outside 90 through the branch duct 32 and the exhaust duct 31.

[0037] The heat exchanger 16 is a device that exchanges heat between the air supplied to the indoor space 92 by the air supply unit 20 and the air discharged to the outdoors 90 by the air exhaust unit 30. Specifically, the heat exchanger 16 has a housing 17, a heat exchange element 18, a first air supply flow path 15A, a second air supply flow path 15B, a first exhaust flow path 19A, and a second exhaust flow path 19B. The housing 17 is formed in a box shape such as a rectangular parallelepiped. Inside the housing 17, the heat exchange element 18, the air supply fan 24, and the exhaust fan 34 are arranged as shown in FIG. 2.

[0038] The heat exchange element 18 is configured, for example, by stacking a large number of air supply flow paths 18A formed by gluing corrugated paperboard (corrugated sheet) onto flat paperboard, and an exhaust flow path 18B formed by gluing corrugated paperboard (corrugated sheet) onto flat paperboard, so that the flow directions of the air supply flow paths 18A and the exhaust flow paths 18B are perpendicular to each other.

[0039] One first connection port 17A (specifically, the same number as the air supply duct 21) is formed in the housing 17, and the air supply duct 21 is connected to the first connection port 17A. The first air supply flow path 15A is a flow path that allows air to flow from the first connection port 17A to the heat exchange element 18.

[0040] A plurality of second connection ports 17B (specifically, the same number as the branch ducts 22) are formed, and each of the plurality of second connection ports 17B is connected to each of the plurality of branch ducts 22. The second air supply passage 15B is a passage through which air flows from the heat exchange element 18 to the second connection port 17B.

[0041] A plurality of third connection ports 17C (specifically, the same number as the branch ducts 32) are formed, and each of the plurality of third connection ports 17C is connected to each of the plurality of branch ducts 32. The first exhaust flow path 19A is a flow path that allows air to flow from the third connection port 17C to the heat exchange element 18.

[0042] One fourth connection port 17D (specifically, the same number as the exhaust ducts 31) is formed in the housing 17, and the exhaust duct 31 is connected to the fourth connection port 17D. The second exhaust flow path 19B is a flow path that allows air to flow from the heat exchange element 18 to the fourth connection port 17D.

[0043] Then, air from the air supply duct 21 flows through the first air supply passage 15A, the air supply passage 18A, and the second air supply passage 15B in this order, and is sent to the branch duct 22. Air from the branch duct 32 flows through the first exhaust passage 19A, the exhaust passage 18B, and the second exhaust passage 19B in this order, and is sent to the exhaust duct 31. Then, in the heat exchange element 18, heat exchange is performed between the air flowing through the air supply passage 18A and the air flowing through the exhaust passage 18B. This reduces the temperature difference between the air supplied to the indoor space 92 through the branch duct 22 and the air in the indoor space 92, and reduces the temperature change in the indoor space 92.

[0044] <Hot water supply system 40> 1 is a system that heats water supplied from a water supply pipe 94 and delivers the water to a facility that uses the hot water (hereinafter, referred to as a usage facility 93). Examples of the usage facility 93 include a bath 93A, a washstand 93B, and a kitchen. Specifically, the hot water supply system 40 has a heating unit 42 and a water delivery unit 44.

[0045] The heating unit 42 is a component that heats the water supplied from the water supply pipe 94. In the heating unit 42, for example, while the water supplied from the water supply pipe 94 flows through a pipe (not shown), the pipe is heated by igniting gas, thereby heating the water. As a result, the water supplied from the water supply pipe 94 becomes hot water.

[0046] The heating unit 42 may be, for example, a unit that heats water supplied from the water supply pipe 94 in a stored state. The heating unit 42 may also be a unit that heats water using electricity.

[0047] The water supply unit 44 is a component that sends water heated by the heating unit 42 (hereinafter, referred to as hot water) from the heating unit 42 toward the usage equipment 93 and the air supply unit 20. Specifically, the water supply unit 44 has a water supply pipe 46 that extends from the heating unit 42 toward the usage equipment 93 and the air supply unit 20, and a branch pipe 48 that branches from the water supply pipe 46 to each of the usage equipment 93 and the air supply unit 20. The water supply unit 44 supplies hot water by sending the hot water through the water supply pipe 46 and the branch pipe 48 to each of the usage equipment 93 and the air supply unit 20. The branch pipe 48A branching to the air supply unit 20 is connected to a humidifier 70 provided in the housing 17 of the heat exchanger 16.

[0048] In addition to the function of supplying hot water to the usage equipment 93, the hot water supply system 40 may also have the function of circulating hot water between the usage equipment that uses heat (e.g., a floor heating system, a bathroom dryer, etc.).

[0049] <Humidification unit 70> The humidifier 70 is a component that humidifies the air supplied from the air supply unit 20 to the indoor space 92, using water (specifically, hot water) sent by the water supply unit 44 toward the air supply unit 20. The humidifier 70 humidifies the air supplied to each of the multiple indoor spaces 92 collectively, upstream of the branch duct 22. In this embodiment, the humidifier 70 is disposed in the second air supply flow path 15B provided inside the housing 17 of the heat exchanger 16, and humidifies the air in the second air supply flow path 15B (i.e., between the air supply fan 24 and the branch duct 22).

[0050] Specifically, the humidifying section 70 has a nozzle 72 and an on-off valve 74. The nozzle 72 is provided at the downstream end of the branch pipe 48A, and hot water can flow into the nozzle 72 through the branch pipe 48A. The on-off valve 74 is provided in the branch pipe 48A on the upstream side of the nozzle 72. When the on-off valve 74 is opened, hot water flows into the nozzle 72 through the branch pipe 48A, and when the on-off valve 74 is closed, the inflow of hot water into the nozzle 72 stops.

[0051] With the on-off valve 74 open, the nozzle 72 sprays hot water into the second air supply passage 15B by the tap pressure of the hot water flowing through the branch pipe 48A. This humidifies the air flowing through the second air supply passage 15B. That is, in this embodiment, the humidifier 70 humidifies the air supplied to each of the multiple indoor spaces 92 collectively, upstream of the branch ducts 22 that branch into each of the multiple indoor spaces 92.

[0052] <Humidity sensor 80 and temperature sensor 82> The humidity sensor 80 is a sensor that detects the relative humidity of the air that the exhaust unit 30 exhausts from the indoor space 92 to the outdoors 90. The temperature sensor 82 is a sensor that detects the temperature of the air that the exhaust unit 30 exhausts from the indoor space 92 to the outdoors 90. The humidity sensor 80 and the temperature sensor 82 are examples of a detection unit.

[0053] 2, the humidity sensor 80 and the temperature sensor 82 are disposed, for example, in the first exhaust flow path 19A and detect the relative humidity and temperature of the air flowing through the first exhaust flow path 19A. That is, the humidity sensor 80 and the temperature sensor 82 detect the relative humidity and temperature of the air between the branch duct 23 and the heat exchange element 18. The humidity sensor 80 and the temperature sensor 82 transmit information on the detected relative humidity and temperature of the air to the control device 60.

[0054] <Input section 64> The input unit 64 is a component where instructions from the user are input. Specifically, the input unit 64 is composed of, for example, an operation unit (specifically, a remote control) such as input keys and a touch panel on which the user performs input operations. The operation unit is installed, for example, on a wall surface of the indoor space 92, as shown in Fig. 1. An example of an input operation by the user is an operation to set a desired humidity of the indoor space 92 desired by the user.

[0055] <Control device 60> The control device 60 is an example of a control unit, and is a device that controls the humidifying unit 70. Specifically, the control device 60 has a function as a computer, and has a processor 61, a memory 62, a storage 63, and a communication unit 65, as shown in Fig. 3. The processor 61 may be understood as an example of a control unit.

[0056] For example, a general-purpose processor such as a CPU (Central Processing Unit) is used as the processor 61. Note that an example of the processor may be a dedicated processor configured with a circuit designed specifically to execute a specific process.

[0057] The storage 63 stores various programs including a control program 63A (see FIG. 4) and various data. Specifically, the storage 63 is realized by a recording device such as a hard disk drive (HDD), a solid state drive (SSD), or a flash memory.

[0058] The memory 62 is a working area for the processor 61 to execute various programs, and temporarily records various programs or various data when the processor 61 executes processing. The processor 61 reads various programs including the control program 63A from the storage 63 into the memory 62, and executes the programs using the memory 62 as a working area.

[0059] The communication unit 65 is a component for communicating with other components such as the input unit 64, the humidifier 70, the humidity sensor 80, and the temperature sensor 82. The communication unit 65 communicates with the other components by using communication means such as wired, wireless, the Internet, and an intranet.

[0060] In the control device 60, the processor 61 executes the control program 63A to realize various functions. The following describes the functional configuration realized by the cooperation of the processor 61 as a hardware resource and the control program 63A as a software resource. Figure 4 is a block diagram showing the functional configuration of the processor 61.

[0061] As shown in FIG. 4, in the control device 60, the processor 61 executes a control program 63A to function as an acquisition unit 61A, a calculation unit 61B, and a humidification control unit 61C.

[0062] The acquisition unit 61A acquires information on the relative humidity and temperature of the air detected by the humidity sensor 80 and the temperature sensor 82. The acquisition unit 61A is also a functional unit that acquires various instructions and information input by the user through the input unit 64. In this embodiment, the acquisition unit 61A acquires information on the desired humidity input through the input unit 64, for example.

[0063] The calculation unit 61B calculates the absolute humidity of the air exhausted from the indoor space 92 to the outdoors 90 by the exhaust unit 30, based on the information on the relative humidity and the temperature acquired by the acquisition unit 61A.

[0064] The humidification control unit 61C sets a target absolute humidity based on information about the desired humidity, and controls the humidification unit 70 so that the absolute humidity of the air exhausted by the exhaust unit 30 from the indoor space 92 to the outdoors 90 becomes the target absolute humidity.

[0065] Specifically, in this embodiment, the humidification amount per unit time of the humidifier 70 (specifically, the nozzle 72) is measured in advance, and the humidification amount per unit time is known. Then, the humidification control unit 61C performs feedback control on the humidification amount of the humidifier 70 by controlling the humidification time of the humidifier 70 (specifically, the open time of the on-off valve 74) so ​​that the absolute humidity calculated by the calculation unit 61B becomes the target absolute humidity.

[0066] <Effects of this embodiment> In this embodiment, the air supply unit 20 takes in air from the outdoors 90 and supplies it to the indoor space 92, and the exhaust unit 30 exhausts air from the indoor space 92 to the outdoors 90. The heating unit 42 heats water supplied from a water supply pipe 94, and the water supply unit 44 sends the water from the heating unit 42 toward the equipment used 93 and the air supply unit 20. Then, the humidifying unit 70 humidifies the air supplied from the air supply unit 20 to the indoor space 92, using the water sent by the water supply unit 44 toward the air supply unit 20.

[0067] Thus, in this embodiment, the water supplied from the water supply pipe 94 and heated is sent from the heating section 42 to the air supply section 20 by the water supply section 44, and the water is used to humidify the air supplied from the air supply section 20 to the indoor space 92. Therefore, compared to a case where the air supplied to the indoor space 92 is humidified using a humidifier installed in the indoor space 92 and which needs to be replenished with water, the air can be humidified continuously and in large quantities. Therefore, according to this embodiment, the humidifying capacity for humidifying the air taken in from the outdoors 90 and supplied to the indoor space 92 can be improved.

[0068] Furthermore, in this embodiment, the control device 60 controls the humidifier 70 so that the absolute humidity of the air discharged from the indoor space 92 to the outdoors 90 becomes the target absolute humidity. Therefore, the air can be humidified to an appropriate humidity level according to the absolute humidity of the air discharged from the indoor space 92 to the outdoors 90.

[0069] Furthermore, in this embodiment, the humidifier 70 humidifies the air supplied to each of the multiple indoor spaces 92 collectively, upstream of the branch ducts 22 that branch off to each of the multiple indoor spaces 92. For this reason, the number of points where moisture is supplied to the air can be reduced, and the number of parts of the humidifier 70 can be reduced, compared to when the air supplied to each of the multiple indoor spaces 92 is humidified individually.

[0070] <Modifications of the humidifier 70> The humidification system 10 may include a humidification unit 70 arranged for each of the air inlets 29A, as shown in Fig. 5 and Fig. 6, in addition to the humidification unit 70 arranged in the housing 17. In the humidification unit 70, as shown in Fig. 6, when the on-off valve 74 is open, the nozzle 72 sprays hot water into the space in the air inlet 29A by the water pressure of the hot water flowing through the branch pipe 48A. This humidifies the air discharged from the air inlet 29A to the indoor space 92. The humidification unit 70 can be used, for example, when the control device 60 determines that the humidification unit 70 arranged in the housing 17 has malfunctioned due to a clogged nozzle or the like, or when the control device 60 determines that the amount of humidification is insufficient with the humidification unit 70 arranged in the housing 17.

[0071] The humidification system 10 may include a humidification unit 70 arranged for each of the air intake ports 29A, instead of the humidification unit 70 arranged in the housing 17. In addition, the humidification system 10 may have, for example, a humidification unit 70 that humidifies the air supplied to each of the multiple indoor spaces 92 individually in the branch duct 22. With this configuration, the humidity of each of the multiple indoor spaces 92 can be adjusted individually, compared to when the air supplied to each of the multiple indoor spaces 92 is humidified collectively.

[0072] <Other Modifications> In this embodiment, the control device 60 calculates the absolute humidity of the air discharged from the indoor space 92 to the outdoors 90, and controls the humidifier 70 so that the absolute humidity becomes the target absolute humidity, but this is not limited to this.

[0073] For example, the humidifier 70 may be controlled so that the relative humidity detected by the humidity sensor 80 becomes the target relative humidity. With this configuration, the air can be humidified to an appropriate humidity level according to the relative humidity of the air discharged from the indoor space 92 to the outdoors 90.

[0074] In the present embodiment, the humidity sensor 80 and the temperature sensor 82 detect the relative humidity and temperature of the air exhausted by the exhaust unit 30 from the indoor space 92 to the outdoors 90, respectively, but this is not limited to this. For example, the humidity sensor 80 and the temperature sensor 82 may be disposed in the indoor space 92, and the humidity sensor 80 and the temperature sensor 82 may detect the relative humidity and temperature of the indoor space 92, respectively.

[0075] In this case, the control device 60 can calculate the absolute humidity from the relative humidity and temperature of the indoor space 92 detected by the humidity sensor 80 and the temperature sensor 82, and control the humidifier 70 so that the absolute humidity becomes the target absolute humidity. With this configuration, the air can be humidified to an appropriate humidity level according to the absolute humidity of the indoor space 92.

[0076] Furthermore, when the humidity sensor 80 detects the relative humidity of the indoor space 92, for example, the humidifier 70 may be controlled so that the relative humidity of the indoor space 92 detected by the humidity sensor 80 becomes a target relative humidity. With this configuration, the air can be humidified to an appropriate humidity level according to the relative humidity of the indoor space 92.

[0077] In the present embodiment, the ventilation system 12 is a ventilation system that employs the first type ventilation method among the first type ventilation method, the second type ventilation method, and the third type ventilation method, but is not limited to this. The ventilation system 12 may be a ventilation system that employs the second type ventilation method or the third type ventilation method.

[0078] The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements are possible without departing from the spirit and scope of the present invention. For example, the above-described modified examples may be combined in combination as appropriate.

[0079] <Additional Notes> [Aspect 1] An air supply section that takes in air from outdoors and supplies it to the indoor space; An exhaust section that exhausts air from the indoor space to the outdoors; A heating unit that heats water supplied from a water supply pipe; A water supply unit that sends the water heated by the heating unit from the heating unit to a facility that uses hot water and the air supply unit; a humidification unit that humidifies the air supplied from the air supply unit to the indoor space by using the water sent by the water supply unit to the air supply unit; A humidification system comprising:

[0080] [Aspect 2] A detection unit that detects the relative humidity and temperature of the air exhausted from the indoor space to the outdoors by the exhaust unit; a control unit that calculates an absolute humidity from the relative humidity and temperature detected by the detection unit and controls the humidification unit so that the absolute humidity becomes a target absolute humidity; 2. The humidification system of embodiment 1, comprising:

[0081] [Aspect 3] A detection unit that detects the relative humidity of the air exhausted from the indoor space to the outdoors by the exhaust unit; a control unit that controls the humidifier unit so that the relative humidity detected by the detection unit becomes a target relative humidity; 2. The humidification system of embodiment 1, comprising:

[0082] [Aspect 4] A detection unit that detects the relative humidity and temperature of the indoor space; a control unit that calculates an absolute humidity from the relative humidity and temperature detected by the detection unit and controls the humidification unit so that the absolute humidity becomes a target absolute humidity; 2. The humidification system of embodiment 1, comprising:

[0083] [Aspect 5] A detection unit that detects the relative humidity of the indoor space; a control unit that controls the humidifier unit so that the relative humidity detected by the detection unit becomes a target relative humidity; 2. The humidification system of embodiment 1, comprising:

[0084] [Aspect 6] The air supply unit has a branch duct branched to each of the indoor spaces, and supplies air to each of the indoor spaces; The humidifying unit humidifies air supplied to each of the indoor spaces at the same time upstream of the branch duct. A humidification system according to any one of aspects 1 to 5.

[0085] [Aspect 7] The air supply unit has a branch duct branched to each of the indoor spaces, and supplies air to each of the indoor spaces; The humidifying unit individually humidifies the air supplied to each of the indoor spaces through the branch duct. A humidification system according to any one of aspects 1 to 5. [Explanation of symbols]

[0086] 10 Humidification System 12 Ventilation System 15A First air supply flow path 15B Second air supply flow path 16 Heat exchange equipment 17. Cabinet 17A First Connection Port 17B Second connection port 17C Third connection port 17D Fourth Connection Port 18 Heat exchange element 18A Air supply passage 18B Exhaust passage 19A First exhaust flow path 19B Second exhaust flow path 20 Air supply section 21 Air supply duct 21A Intake port 22 Branch Duct 22A air supply port 23 Branch Duct 24 Intake fan 25 Filters 30 Exhaust section 31 Exhaust Duct 31A Exhaust port 32 Branch Duct 32A intake port 34 Exhaust fan 40 Hot Water System 42 Heating section 44 Water supply section 46 Water supply pipe 48 Branch Pipe 48A Branch Pipe 60 Control device (an example of a control unit) 61 processors 61A Acquisition Department 61B Calculation part 61C Humidification control unit 62 Memory 63 Storage 63A Control Program 64 Input section 65 Communications Department 70 Humidification unit 72 Nozzle 74 On-off valve 80 Humidity sensor (an example of a detection unit) 82 Temperature sensor (an example of a detection unit) 90 Outdoor 92 Indoor space 92A Living Room 92B Bedroom 92C Washroom 92D Bathroom 93 Equipment used 93A Bath 93B Wash basin 94 Water piping

Claims

1. An air supply section that takes in air from outdoors and supplies it to the indoor space; An exhaust section that exhausts air from the indoor space to the outdoors; A heating unit that heats water supplied from a water supply pipe; A water supply unit that sends the water heated by the heating unit from the heating unit to a facility that uses hot water and the air supply unit; a humidification unit that humidifies the air supplied from the air supply unit to the indoor space by using the water sent by the water supply unit to the air supply unit; A humidification system comprising:

2. A detection unit that detects the relative humidity and temperature of the air exhausted from the indoor space to the outdoors by the exhaust unit; a control unit that calculates an absolute humidity from the relative humidity and temperature detected by the detection unit and controls the humidification unit so that the absolute humidity becomes a target absolute humidity; The humidification system of claim 1 .

3. A detection unit that detects the relative humidity of the air exhausted from the indoor space to the outdoors by the exhaust unit; a control unit that controls the humidifier unit so that the relative humidity detected by the detection unit becomes a target relative humidity; The humidification system of claim 1 .

4. A detection unit that detects the relative humidity and temperature of the indoor space; a control unit that calculates an absolute humidity from the relative humidity and temperature detected by the detection unit and controls the humidification unit so that the absolute humidity becomes a target absolute humidity; The humidification system of claim 1 .

5. A detection unit that detects the relative humidity of the indoor space; a control unit that controls the humidifier unit so that the relative humidity detected by the detection unit becomes a target relative humidity; The humidification system of claim 1 .

6. The air supply unit has a branch duct branched to each of the indoor spaces, and supplies air to each of the indoor spaces; The humidifying unit humidifies air supplied to each of the indoor spaces at the same time upstream of the branch duct. The humidification system of claim 1 .

7. The air supply unit has a branch duct branched to each of the indoor spaces, and supplies air to each of the indoor spaces; The humidifying unit individually humidifies the air supplied to each of the indoor spaces through the branch duct. The humidification system of claim 1 .

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