Ventilation device, opening device, ventilation register, ventilation system, and control method of ventilation system

Abstract

To provide a ventilation device which can be preferably used with an air conditioner.SOLUTION: A ventilation device includes: a first circulation part 20 forming a passage for circulating air from an outdoor space to an indoor space; a second circulation part 30 forming a passage for circulating air from the indoor space to the outdoor space; a mixed flow circulation part 60 forming a passage for mixing air from the indoor space into air flowing from the outdoor space to the indoor space in the first circulation part 20; and blowers 11, 12 which cause air in the passage of at least one of the first circulation part 20 and the second circulation part 30 and in the passage of the mixed flow circulation part 60 to circulate.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a ventilation device, an opening device, a ventilation register, a ventilation system, and a method for controlling a ventilation system. [Background technology]

[0002] Conventionally, attempts have been made to improve indoor environments by opening windows for ventilation in order to cool the room, exchange air, adjust humidity, and so on. For example, the ventilation window shown in Patent Document 1 has a sliding screen that opens by rotating the bottom frame outward, and is structured so that it opens to the maximum when there is no wind and opens less when wind blows from the inside of the room. In this way, a ventilation window has been proposed that adjusts the amount of air taken into the room depending on the wind volume, providing suitable opening ventilation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-095894 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, the spread of air conditioning has made it common to maintain a comfortable indoor temperature. However, opening windows for ventilation still remains highly necessary, even in environments with air conditioning, because it has the effect of purifying the air indoors and reducing carbon dioxide concentrations. However, the above-mentioned conventional ventilation windows reduce the air conditioning efficiency of the air conditioner, and it is difficult to use them in combination with the air conditioner from the viewpoint of energy saving.

[0005] An object of the present invention is to provide a ventilation device, an opening device, a ventilation register, a ventilation system, and a control method for a ventilation system that can be suitably used in combination with an air conditioning device. [Means for solving the problem]

[0006] The present invention relates to a ventilation device, A first flow section that configures a flow path for flowing air from outdoors to indoors; A second flow section that configures a flow path for flowing air from indoors to outdoors; a mixing and circulating section that configures a flow path that mixes air from the indoors with air from the outdoors in the first circulating section; a blower for circulating air through a flow path of each of the first flow section, the second flow section, and the mixed flow section; The present invention is characterized by comprising:

[0007] The present invention also provides an opening device, An opening device provided at an opening in a structure of a building, The ventilation device is provided inside a frame body attached to the opening.

[0008] The present invention also provides a ventilation register comprising: The ventilation device is characterized in that at least a portion of the flow path of the first circulation section and the flow path of the second circulation section are arranged inside a through hole in a body of a building.

[0009] The present invention also provides a ventilation system, comprising: the ventilation device including a wireless communication device and a ventilation control device that controls the operation of the heat exchange avoidance mechanism and the blower based on an external command received by the wireless communication device; An air conditioning device that adjusts the temperature inside the building; an external temperature detection device for detecting an external temperature of the building; An internal temperature detection device for detecting a temperature inside the building; a control device capable of communicating with the ventilation device, the air conditioning device, the external temperature detection device, and the internal temperature detection device; The control device is characterized in that it calculates the temperature difference between the outside and inside of the room using the external temperature detection device and the internal temperature detection device, and, depending on the temperature difference, stops the air conditioning device and operates the ventilation device while stopping the flow of air through the flow path of the mixed circulation section.

[0010] The present invention also provides a ventilation system, comprising: The ventilation device; A carbon dioxide concentration detection device for detecting a carbon dioxide concentration in a room; A control device capable of communicating with the ventilation device and the carbon dioxide concentration detection device, The control device is characterized in that it operates the ventilation device in response to the carbon dioxide concentration detected by the carbon dioxide concentration detection device.

[0011] The present invention also provides a method for producing a semiconductor device comprising the steps of: the ventilation device including a wireless communication device and a ventilation control device that controls the operation of the heat exchange avoidance mechanism and the blower based on an external command received by the wireless communication device; An air conditioning device that adjusts the temperature inside the building; an external temperature detection device for detecting an external temperature of the building; An internal temperature detection device for detecting a temperature inside the building; A method for controlling a ventilation system comprising: The temperature difference between the outside and inside of the room is calculated using the external temperature detection device and the internal temperature detection device, and depending on the temperature difference, the air conditioning device is stopped and the ventilation device is operated with the flow of air in the flow path of the mixed flow section stopped.

[0012] The present invention also provides a method for producing a semiconductor device comprising the steps of: The ventilation device; A carbon dioxide concentration detection device for detecting a carbon dioxide concentration in a room; A method for controlling a ventilation system comprising: The ventilation device is controlled to operate in accordance with the carbon dioxide concentration detected by the carbon dioxide concentration detection device. Effect of the Invention

[0013] The present invention makes it possible to provide a ventilation device, an opening device, a ventilation register, a ventilation system, and a control method for a ventilation system that can be suitably used in combination with an air conditioner from the viewpoint of energy saving. [Brief description of the drawings]

[0014] [Figure 1] 1 is a cross-sectional view of the ventilation register of the first embodiment along a plane along the front-to-back direction and the vertical up-down direction. FIG. [Diagram 2] FIG. 2 is a cross-sectional view of the ventilation register taken along line AA in FIG. 1. [Diagram 3] This is a cross-sectional view along a plane along the inward / outward direction and the vertical up / down direction of a ventilation register in which a blower is installed in the first flow section. [Figure 4] FIG. 4 is a cross-sectional view of the ventilation register taken along line BB in FIG. 3 . [Diagram 5] 1 is a cross-sectional view of a ventilation register having a blower in a second flow section, taken along a plane along the front-to-back direction and the vertical up-down direction. [Figure 6] FIG. 6 is a cross-sectional view of the ventilation register taken along line CC in FIG. 5 . [Figure 7] FIG. 11 is a front view of the opening device of the second embodiment. [Figure 8] FIG. 8 is a rear view of the ventilation device of FIG. [Figure 9] FIG. 9 is a cross-sectional view of the ventilation device taken along line DD in FIG. 8. [Figure 10] FIG. 2 is a block diagram showing a schematic configuration of a ventilation system. [Figure 11] FIG. 1 shows a cross-sectional view of a ventilation register equipped with an inside air mixing stop mechanism along the front-to-back and up-to-down directions. [Figure 12] 1 shows a cross-sectional view of a ventilation register equipped with an internal air mixing stop mechanism and having a blower in the first flow section along the front-to-back and up-to-down directions. [Figure 13]1 shows a cross-sectional view of a ventilation register equipped with an internal air mixing stop mechanism and having a blower in the second circulation section along the front-to-back and up-to-down directions. [Figure 14] 10 is a cross-sectional view of the ventilation device of FIG. 7 equipped with an inside air mixing stop mechanism, taken along line DD of FIG. 8. [Figure 15] FIG. 2 is a block diagram showing a schematic configuration of a ventilation device or a ventilation register of the ventilation system. [Figure 16] FIG. 1 is a conceptual diagram of outdoor air cooling control in a ventilation system. [Figure 17] 11 is a flowchart of outdoor air cooling control in the ventilation system. [Figure 18] FIG. 1 is a conceptual diagram of CO2 concentration adjustment control in a ventilation system. [Figure 19] 1 is a flowchart of CO2 concentration adjustment control in a ventilation system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] [First embodiment] A first embodiment of the ventilation device according to the present invention will be described with reference to the drawings. Note that each embodiment described below is merely an example of the present invention, and the present invention is not limited to the embodiments described below, and can be modified as appropriate within the scope of the technical concept of the present invention.

[0016] The ventilation device described below consists of a ventilation register installed using a ventilation penetration hole B that penetrates the building's structural wall W from the inside to the outside. In the following embodiment, the present invention is applied to a building constituting a residence, such as a detached house or an apartment building, but is not limited to a residence and can also be applied to buildings such as offices, commercial facilities, hospitals, and public facilities where people stay for only a part of the day.

[0017] FIG. 1 is a cross-sectional view of a ventilation register 100 taken along a plane perpendicular to a wall W and extending in the vertical direction, and FIG. 2 is a cross-sectional view taken along line AA in FIG. The wall W of the structure extends vertically, and the through hole B is formed perpendicular to the wall W.

[0018] In the following description, the upper side in the vertical direction is referred to as "up" and the lower side as "down". Additionally, the direction perpendicular to the wall W that faces the inside of the building is referred to as "rear", and the direction that faces the outside of the building is referred to as "front". Furthermore, when facing the front, the left hand side is referred to as "left" and the right hand side is referred to as "right".

[0019] The ventilation register 100 includes a first circulation section 20 that constitutes a flow path for circulating air from outdoors to indoors, a second circulation section 30 that constitutes a flow path for circulating air from indoors to outdoors, a mixed circulation section 60 that constitutes a flow path for mixing air from indoors with air from outdoors to indoors in the first circulation section 20, a blower 11 that circulates air through both the flow paths of the first circulation section 20 and the mixed circulation section 60, and a blower 12 that circulates air through the flow path of the second circulation section 30.

[0020] [First Distribution Department] The aforementioned through hole B is a through hole having a circular cross section and a uniform inner diameter along the front-rear direction. The first flow section 20 has a main pipe 21 made of a tubular body with a semicircular cross section that passes through the upper half of a region obtained by vertically dividing the through hole B in the front-rear direction. The indoor end of the main pipe 21 is connected to the indoor pipe 22, and the outdoor end of the main pipe 21 is connected to the outdoor pipe 23.

[0021] The lower end of the indoor duct 22 is connected to the main duct 21. The indoor duct 22 is a tubular body having a rectangular cross section that is uniformly rectangular along the vertical direction. The inner flow path of the indoor duct 22 communicates with the inner flow path of the main duct 21. The indoor duct 22 is parallel to and in contact with the indoor surface of the wall W, and is flat along the indoor surface. The inside of the indoor duct 22 merges with the inside of a mixing and circulating section 60 described below near the upper end, and an outdoor air outlet 221 shared by the indoor duct 22 and the mixing and circulating section 60 is formed at the upper end of the indoor duct 22 and the mixing and circulating section 60.

[0022] The outdoor pipe 23 has an upper end that opens upward and a lower end that is connected to the main pipe 21. The outdoor pipe 23 is a tubular body with a rectangular cross section that is uniformly rectangular along the vertical direction. The inner flow path of the outdoor pipe 23 communicates with the inner flow path of the main pipe 21. The outdoor duct 23 is parallel to and in contact with the outdoor surface of the wall W, and is flat along the outdoor surface. An upper end of the outdoor duct 23 serves as an intake port 231 for outdoor air. It is preferable to provide a cover or the like around intake 231 to prevent rainwater from entering.

[0023] With the above-described configuration, the first flow section 20 integrally connects the flow path in the outdoor pipe 23, the flow path in the main pipe 21, and the flow path in the indoor pipe 22, forming a flow path that circulates air from outdoors to indoors.

[0024] [Second Distribution Department] The second flow section 30 has a main pipe 31 made of a tubular body with a semicircular cross section that passes through the lower half of a region obtained by dividing the through hole B into upper and lower halves along the front-rear direction. The indoor end of the main pipe 31 is connected to the indoor pipe 32 , and the outdoor end of the main pipe 31 is connected to the outdoor pipe 33 .

[0025] The indoor duct 32 has an upper end connected to the main duct 31. The indoor duct 32 is a tubular body having a rectangular cross section that is uniformly rectangular along the vertical direction. The inner flow path of the indoor duct 32 communicates with the inner flow path of the main duct 31. The indoor duct 32 is parallel to and in contact with the indoor surface of the wall W, and is flat along the indoor surface. The inside of the indoor duct 32 merges with the inside of a mixing and circulating section 60 described below near the lower end, and an indoor air intake port 321 shared by the indoor duct 32 and the mixing and circulating section 60 is formed at the lower end thereof.

[0026] The lower end of the outdoor pipe 33 opens downward, and the upper end is connected to the main pipe 31. The outdoor pipe 33 is a tubular body with a rectangular cross section that is uniformly rectangular along the vertical direction. The inner flow path of the outdoor pipe 33 communicates with the inner flow path of the main pipe 31. The outdoor duct 33 is parallel to and in contact with the outdoor surface of the wall W, and is flat along the outdoor surface. A lower end of the outdoor duct 33 serves as an exhaust port 331 for indoor air.

[0027] With the above-described configuration, the second circulation section 30 integrally connects the flow path in the indoor pipe 32, the flow path in the main pipe 31, and the flow path in the outdoor pipe 33, forming a flow path that circulates air from indoors to outdoors.

[0028] [Mixed distribution department] The indoor duct 22 of the first flow section 20 and the indoor duct 32 of the second flow section 30 have the same width in the left-right direction and the same thickness in the front-rear direction. The lower end of the indoor duct 22 and the lower end of the indoor duct 32 are butted against each other and are integrated in a state overlapping each other when viewed from the up-down direction. The mixing and circulating section 60 is made up of pipes provided on the rear side of the indoor pipes 22 and 32 which are aligned vertically and integrated as described above, over the entire vertical length of these pipes. The mixed flow section 60, together with the indoor pipes 22 and 32, has the same width in the left-right direction and thickness in the front-rear direction, and constitutes a flat pipe whose cross-sectional shape and dimensions are constant over its entire length.

[0029] As described above, the inside of the mixed circulation section 60 near the upper end merges with the inside of the indoor pipe 22 near the upper end, and the discharge port 221 is shared. As described above, the inside of the mixed circulation section 60 near the lower end merges with the inside of the indoor pipe 32 near the lower end, and the intake port 321 is shared. The mixing circulation section 60 can use the blower 11 described later to take in indoor air through the inlet 321 at the lower end, and mix the taken-in indoor air with the outdoor air circulating within the first circulation section 20 at the upper end.

[0030] The first flow section 20, the second flow section 30 and the mixed flow section 60 have the necessary strength and are formed from a material having weather resistance, such as a resin or a metal. The main pipe 21, the indoor pipe 22, and the outdoor pipe 23 of the first flow section 20 may all be made of separate members and integrally connected to each other by joining, gluing, screwing, etc. Similarly, the main pipe 31, the indoor pipe 32, and the outdoor pipe 33 of the second flow section 30 may all be made of separate members and integrally connected to each other by joining, gluing, screwing, etc.

[0031] The main pipe 21 of the first flow section 20 and the main pipe 31 of the second flow section 30 may be formed from a single circular pipe, and may have a partition wall dividing the inside into upper and lower parts. The indoor duct 22 of the first circulating section 20 and the indoor duct 32 of the second circulating section 30 may be integrally formed with their opposing ends butted together. In this case, a mixing circulating section 60 may be further integrally formed on the rear side of the indoor duct 22 and the indoor duct 32 that are integrated by butting their opposing ends together. Similarly, the outdoor pipe 23 of the first flow section 20 and the outdoor pipe 33 of the second flow section 30 may be integrally formed by connecting their opposing ends and have a partition wall therein. Furthermore, the integrated main pipes 21, 31, the integrated indoor pipes 22, 32 (and further, the mixed circulation section 60) and the integrated outdoor pipes 23, 33 may be integrally connected to each other by a method such as joining, bonding, or screwing.

[0032] In addition, the cross-sectional shapes of the indoor pipes 22, 32, the outdoor pipes 23, 33, and the mixed circulation section 60 are all exemplified as rectangles that are wider in the left-right direction than in the front-back direction, but are not limited thereto. However, even if the cross-sectional shapes are other shapes, it is preferable to use a shape that is wider in the left-right direction than in the front-back direction. This is because the indoor pipes 22, 32, the mixed circulation section 60, and the outdoor pipes 23, 33 can be arranged along the indoor and outdoor surfaces of the wall W, respectively, and the amount of protrusion from the indoor or outdoor surface of the wall W can be reduced. In addition, the indoor ducts 22, 32 and the mixed circulation section 60 are arranged in a front-to-back manner, but may be arranged in a left-to-right manner. In that case, it is possible to make the front-to-rear thickness of the indoor ducts 22, 32 and the mixed circulation section 60 thinner.

[0033] [Blower] The first flow section 20 and the second flow section 30 are provided with fans 11 and 12, respectively. Both fans 11 and 12 are of the same type and include a casing, blades, and a motor. The blowers 11 and 12 are, for example, blower fans that suck in air from the lower end of the casing and blow air out from the upper end. If installation space can be secured or the casing structure allows installation, other types of fans (axial flow fans, centrifugal fans, etc.) may be used.

[0034] The blower 11 is mounted so that its air suction port straddles the indoor duct 22 of the first flow section 20 and the mixed flow section 60, inside the upper end of the indoor duct 22 of the first flow section 20 and inside the upper end of the mixed flow section 60. Therefore, the air can be circulated through both the first flow section 20 and the mixed flow section 60 by using the blower 11 alone. It is preferable that a sealant be inserted between the air blower 11 and the pipe wall of the indoor pipe 22 and the pipe wall of the mixing and flow section 60 so that no gap is generated between them. In addition, when there is another blower that circulates through the mixed flow section 60, the blower 11 may be arranged so as to be connected only to the outdoor duct 23 side. In addition, the blower 11 may be arranged near the outside of the indoor duct 22 or the outdoor duct 23.

[0035] The blower 12 is disposed inside the intake port 321 of the indoor duct 32 of the second flow section 30 so as to draw indoor air only to the indoor duct 32 side. Therefore, the blower 12 does not contribute to the flow of air to the mixed flow section 60. The blower 12 circulates air from the indoor side to the outdoor side through the second circulation section 30. It is preferable that a sealant is inserted between the blower 12 and the pipe wall of the indoor pipe 32 so that no gap is generated. The blower 12 may be disposed on the outdoor duct 33 side, or may be disposed near the outside of the indoor duct 32 or the outdoor duct 33.

[0036] [Ventilation register operation] A case will be described in which ventilation is performed by the ventilation register 100 when an air conditioner is installed in a room of a building and the air inside the room is at a lower temperature than the air outside due to the cooling function of the air conditioner.

[0037] The blower 11 of the first flow section 20 and the blower 12 of the second flow section 30 are driven. The blower 12 takes in indoor air from the inlet 321 of the indoor duct 32 of the second flow section 30. The indoor air passes from the main duct 31 through the outdoor duct 33 and is discharged from the outlet 331 to the outside of the room.

[0038] Meanwhile, the blower 11 takes in outdoor air from the inlet 231 of the outdoor duct 23 of the first circulating section 20, and at the same time, takes in indoor air from the mixed circulating section 60. The outdoor air passes from the main duct 21 through the indoor duct 22 and is sucked into the blower 11 at the outlet 221. The indoor air flows from the lower end to the upper end of the mixed circulating section 60, and is sucked into the blower 11. As a result, the outdoor air and the indoor air are mixed and discharged into the room through the exhaust port 221. In this case, even if the outdoor air is hotter than the indoor air, it is mixed with the low-temperature indoor air, so the outdoor air can be taken in at a lower temperature.

[0039] The ventilation register 100 lowers the temperature of the outdoor air to ventilate even when the air conditioner is in cooling mode, so ventilation can be performed while suppressing an increase in the indoor temperature. The same applies when ventilation is performed using the ventilation register 100 when the indoor air is warmer than the outdoor air due to the heating function of the air conditioner. That is, even when the air conditioner is using the heating function, the temperature of the outdoor air is increased by the mixing and circulating section 60 for ventilation, so that ventilation can be performed while suppressing a drop in the indoor temperature.

[0040] The mixing ratio of indoor air to outdoor air in the first circulation section 20 can be adjusted by design values ​​such as the cross-sectional area of ​​the mixing circulation section 60, the allocated opening area on the mixing circulation section 60 side of the intake port 321, and the allocated opening area on the mixing circulation section 60 side of the air suction port of the blower 11. A throttle device with an adjustable opening degree may be provided at any position along the entire length of the flow path of the mixed circulation section 60, thereby adjusting the mixing ratio of indoor air to outdoor air.

[0041] [Technical effect of ventilation registers] In this manner, the ventilation register 100 includes a mixing and circulating section 60 that configures a flow path for mixing the air from the outdoors to the indoors in the first circulating section 20 with the air from the indoors. Therefore, the ventilation register 100 is capable of ventilating the inside and outside of the room by suppressing the effects of the temperature difference between the indoor air and the outdoor air, and is capable of ventilating the inside and outside of the room while suppressing a decrease in the efficiency of the air conditioning system's cooling and heating functions.

[0042] In addition, since the ventilation register 100 is provided with fans 11, 12 in each of the first flow section 20 and the second flow section 30, good ventilation is possible even if the airtightness of the room to be ventilated is low. In addition, since air is circulated through the flow path of the mixed circulation section 60 by the blower 11 provided in the first circulation section 20, the number of blowers required can be reduced, and it is possible to reduce the number of parts of the device, reduce manufacturing costs, make the device smaller and lighter, reduce noise, and reduce power consumption.

[0043] In addition, since the ventilation register 100 is in the form of a register, it can be installed by utilizing a ventilation through hole B that penetrates a wall W of the building frame. In addition, in the ventilation register 100, the main pipes 21, 31 of the first and second flow sections 20, 30 are arranged so as to divide the through hole B in two, so that the single through hole B can be divided into a flow path on the indoor side and a flow path on the outdoor side and used separately. In addition, the cash register can be installed by utilizing the existing through hole B opened in the wall W, which makes it possible to easily carry out the installation work.

[0044] Furthermore, the indoor pipe 22 of the first flow section 20, the indoor pipe 32 of the second flow section 30, and the mixed flow section 60 are integrated when viewed from the outside, and the indoor pipes 22, 32 are in contact with the wall W and have an overall flat shape in the front-to-rear direction. Similarly, the outdoor pipe 23 of the first flow section 20 and the outdoor pipe 33 of the second flow section 30 are integrated when viewed from the outside, are in contact with the wall W, and have a flat shape in the front-rear direction. Therefore, when the ventilation register 100 is installed on a wall W of a building structure, it does not protrude from the inner and outer surfaces of the wall W and does not get in the way of the surrounding area.

[0045] [Other forms of ventilation registers] When the interior of a building has a certain degree of airtightness, the ventilation register 100 may be configured to have only one of the blowers 11 and 12. 3 is a cross-sectional view of a ventilation register 100 having only a blower 11, taken along a plane perpendicular to a wall W and extending in the vertical direction, and FIG. 4 is a cross-sectional view taken along line BB in FIG. 5 is a cross-sectional view of a ventilation register 100 having only a blower 12, taken along a plane perpendicular to a wall W and extending in the vertical direction, and FIG. 6 is a cross-sectional view taken along line CC in FIG.

[0046] In the case of a ventilation register 100 having only a blower 11, outdoor air is sent into the room through the first circulation section 20 by driving the blower 11. The air pressure inside the room increases due to the airtightness, and the indoor air can be sent to the outside through the second circulation section 30. Also, the blower 11 takes in indoor air through the mixing circulation section 60, mixes it with the outdoor air taken in through the first circulation section 20, and exhausts it into the room. As a result, similar to the ventilation register 100 shown in Figs. 1 and 2, it is possible to perform suitable ventilation while suppressing a decrease in the cooling or heating efficiency of the air conditioner.

[0047] In the case of a ventilation register 100 having only a blower 12, as shown in Fig. 5, the blower 12 is installed so that the air suction port takes in air from the entire indoor air intake port 321. The blower 12 is attached so that the outlet thereof straddles the indoor duct 32 of the second circulation section 30 and the mixed circulation section 60. This allows air to flow through both the second flow section 30 and the mixed flow section 60 by using the blower 12 alone. In this case, it is preferable that a sealant be inserted between the blower 12 and the pipe wall of the indoor pipe 32 and the pipe wall of the mixing and flow section 60 so that no gap is generated between them. In the above configuration, by driving the blower 12, indoor air is sent to the outside through the second circulating section 30. The air pressure inside the room is lowered due to the airtightness, and outdoor air can be taken into the room through the first circulating section 20. In addition, indoor air is taken in through the mixing circulating section 60 by the blower 12, mixed with the outdoor air taken in through the first circulating section 20, and discharged into the room. As a result, similar to the ventilation register 100 shown in Figs. 1 and 2, it is possible to perform suitable ventilation while suppressing a decrease in the cooling or heating efficiency of the air conditioner.

[0048] [Second embodiment] A second embodiment of the ventilation device according to the present invention will be described with reference to the drawings. In this embodiment, a ventilation device 100B incorporated in an opening device 1000B provided in an opening in the framework of a building will be illustrated. The following embodiment also illustrates an example of application to a building constituting a residence such as a detached house or an apartment building, although like the first embodiment, this embodiment is not limited to a residence.

[0049] FIG. 7 is a front view of the opening device 1000B as seen from the front (outside the building). In this embodiment, the vertical directions are referred to as "up" and "down", respectively, the direction toward the inside of the building is referred to as "rear", the direction toward the outside of the building is referred to as "front", and when facing the front, the left hand side is referred to as "left" and the right hand side is referred to as "right".

[0050] The opening device 1000B of this embodiment has a rectangular frame body 1100B, a transverse frame 1001B provided on the upper inside part of the frame body 1100B, a glass panel 1002B fixedly held inside the frame body 1100B and below the transverse frame 1001B, and a ventilation device 100B. This opening device 1000B is exemplified as a so-called fixed window in which a glass panel 1002B is fixedly fitted. However, the opening device 1000B may be an openable and closable shoji screen with a frame body 1100B as a frame. In this case, the transom 1001B functions as a middle rail.

[0051] A ventilation device 100B is disposed inside the frame body 1100B of the opening device 1000B, above and to the right of the transom 1001B. FIG. 8 is a rear view of the ventilation device 100B, and FIG. 9 is a cross-sectional view taken along line DD in FIG.

[0052] In the ventilation device 100B, a first circulating section 20B constituting a flow path for circulating air from outdoors to indoors is arranged in the upper part of the right area on the upper side of the transom 1001B inside the frame 1100B, and a second circulating section 30B constituting a flow path for circulating air from indoors to outdoors is arranged in the lower part of the same area. In addition, a mixed circulating section 60B is provided between the first circulating section 20 and the second circulating section 30. Furthermore, a blower 11B is provided in the first flow section 20B, and a blower 12B is provided in the second flow section 30B.

[0053] [First Distribution Department] The above-mentioned transom 1001B is made of a mold material having a substantially rectangular closed cross-sectional shape as shown in Fig. 9. A front cover 1003B is provided slightly above the front side of the transom 1001B. Furthermore, a rear cover 1004B is provided slightly above the rear side of the transom 1001B. The frame 1100B, the interposer 1001B, the front cover 1003B and the rear cover 1004B are made of a metal material, for example, an extruded aluminum alloy.

[0054] The frame 1100B is a rectangular frame when viewed from the front, and has upper and lower frames aligned in the left-right direction, and left and right frames aligned in the up-down direction. Meanwhile, a plate-shaped partition portion 1003Ba is provided on the rear surface of the front cover 1003B and extends rearward from the rear surface. The area between the upper frame 1100Ba of the framework 1100B and the partition portion 1003Ba of the front cover 1003B serves as a first flow section 20B.

[0055] An outdoor air intake port 231B, which is an opening that opens toward the front, is formed at the upper end of the front cover 1003B. It is preferable to provide a cover or the like on the outside of this intake port 231B to prevent rainwater from entering. Further, at the upper end of the rear cover 1004B, an outlet 221B for outdoor air is formed as an opening that opens toward the rear.

[0056] The blower 11B is disposed in the first flow section 20B such that the outlet 111B blows the air in the first flow section 20B out to the indoor side from the exhaust port 221B. It is preferable to insert a sealant between the outlet 111B and the exhaust port 221B of the blower 11B so that no gap is generated. The blower 11B is a blower fan, but other types of fans (axial flow fan, centrifugal fan, etc.) may be used.

[0057] The blower 11B sucks in air in the area between the upper frame 1100Ba of the framework 1100B and the partition 1003Ba of the front cover 1003B, and discharges it indoors through the exhaust port 221B. Therefore, by operating the blower 11B, outdoor air is taken in through the intake port 231B, circulates through the first circulation section 20B, and is discharged indoors through the exhaust port 221B.

[0058] [Second Distribution Department] The second flow section 30 has a flow path on the rear side, an upper side, and a front side of the interposer 1001B, which are connected to each other to form a flow path from the indoor air inlet 321B to the exhaust outlet 331B. That is, a flow path on the rear side of the transom 1001B is formed between the rear surface of the transom 1001B and the front surface of the rear cover 1004B. An indoor air intake port 321B is formed between the lower end of the rear cover 1004B and the rear surface of the transom 1001B. An upper flow path of the interlining 1001B is formed between the upper surface of the interlining 1001B and the lower surface of the partition portion 1003Ba of the front cover 1003B. A flow path on the front side of the transom 1001B is formed between the front side of the transom 1001B and the rear side of the front cover 1003B. An exhaust port 331B for indoor air is formed between the lower end of the front cover 1003B and the front side of the transom 1001B.

[0059] The blower 12B is disposed in the flow path behind the interdigital shutter 1001B of the second flow section 30B. The blower 12B is a blower fan, but other types of fans (axial flow fans, centrifugal fans, etc.) may be used. The method of power supply to the blowers 11B, 12B is not limited to a specific power supply method, and may be appropriately used, such as power supply by direct wiring, wireless power supply, and power supply by magnetic connection. Wireless power supply and power supply by magnetic connection are particularly suitable when using an openable and closable paper door with the frame body 1100B as a frame. The outlet 121B of the blower 12B is disposed so as to send air from the flow path behind the interlining 1001B of the second flow section 30B to the flow path above the interlining 1001B. It is preferable to insert a sealant between the outlet 121B of the blower 12B and the inner wall of the second flow section 30B to prevent a gap from occurring.

[0060] The blower 12B sucks in air in the flow path behind the interlining 1001B and discharges it into the flow path above the interlining 1001B. Therefore, by operating the blower 12B, air from inside the room is taken in through the intake port 321B, flows through the second flow section 30B, and is discharged outside the room through the exhaust port 331B.

[0061] [Mixed distribution department] An opening is formed between the rear end of the partition 1003Ba of the front cover 1003B and the front surface of the rear cover 1004B. The area including this opening constitutes a mixed flow section 60B that communicates with the flow path of the second flow section 30B formed around the interlining 1001B and the first flow section 20B formed between the upper frame 1100Ba of the frame body 1100B and the partition 1003Ba of the front cover 1003B. Depending on the arrangement, the mixing and circulating portion 60B can mix a part of the indoor air taken in by the second circulating portion 30B with the outdoor air circulating through the first circulating portion 20B.

[0062] [Ventilation system operation] A case will be described in which an air conditioner is installed in a room of a building, and ventilation is performed by the ventilator 100B in a state in which the air inside the room is at a lower temperature than the air outside the room due to the cooling function of the air conditioner.

[0063] The fan 11B of the first flow section 20B and the fan 12B of the second flow section 30B are driven. As shown in FIG. 9, outdoor air is taken in from inlet 231B of first circulating section 20B by blower 11B, passes through the flow path of first circulating section 20B, and is discharged into the room from outlet 221B. Meanwhile, air from inside the room is taken in through intake port 321B of second circulating section 30B by blower 12B, passes through the flow path of second circulating section 30B, and is discharged to the outside of the room through exhaust port 331B. At this time, a portion of the indoor air taken in through the inlet 321B flows into the flow path in the first circulation section 20B through the mixing circulation section 60B, and is mixed with the outdoor air taken in through the inlet 231B of the first circulation section 20B by the blower 11B and discharged into the room through the exhaust outlet 221B.

[0064] In this way, the ventilator 100B takes in outdoor air mixed with indoor air even during cooling operation of the air conditioner, and therefore can ventilate the room while suppressing an increase in the room temperature. In the case of the ventilation device 100B as well, when ventilation is performed during heating by the air conditioner, ventilation can be performed while suppressing a drop in the room temperature.

[0065] The mixing ratio of the indoor air to the outdoor air in the first circulation section 20B can be adjusted by changing the design value of the opening width of the mixing circulation section 60B which is an opening. Furthermore, a throttle device capable of adjusting the opening degree may be provided at the opening of the mixed circulation section 60B, thereby adjusting the mixing ratio of the indoor air to the outdoor air.

[0066] [Technical effect of ventilation system] In this way, the ventilation device 100B is equipped with a mixing circulation section 60B that forms a flow path that mixes air from indoors with air from outdoors flowing indoors in the first circulation section 20B, so that ventilation can be performed by mixing indoor air with outdoor air and taking in the air. Therefore, the ventilation device 100B is capable of ventilating the inside and outside of the room by suppressing the effects of the temperature difference between the indoor air and the outdoor air, and is capable of ventilating the inside and outside of the room while suppressing a decrease in the efficiency of the cooling and heating of the air conditioner.

[0067] In addition, in the case of the ventilation device 100B, fans 11B and 12B are provided in the first circulation section 20B and the second circulation section 30B, respectively, so that good ventilation can be achieved even if the airtightness of the room to be ventilated is low. In addition, since air is circulated through the flow path of the mixed circulation section 60B by the blower 12B provided in the second circulation section 30B, the number of blowers required can be reduced, and it is possible to reduce the number of parts of the device, reduce manufacturing costs, make the device smaller and lighter, reduce noise, and reduce power consumption.

[0068] Moreover, since the ventilation device 100B is disposed inside the frame body 1100B of the opening device 1000B, it is easy to secure an installation space for the ventilation device 100B. Furthermore, by disposing the ventilation device 100B inside the frame body 1100B of the opening device 1000B, it is easy to access the ventilation device 100B between the inside and outside of the room, so that it is possible to greatly reduce the workload of the installation work. Moreover, since the ventilation device 100B is disposed inside the frame body 1100B of the opening device 1000B, it is located at the boundary between the outdoors and the indoors, and can extremely easily take in and exhaust the air between the outdoors and the indoors.

[0069] In the case of the ventilation device 100B, the blower 11B or 12B may be installed only in the first circulation section 20B or the second circulation section 30B, similarly to the case of the ventilation register 100. In this case, it is preferable to appropriately adjust the opening width of the mixed circulation section 60B formed of an opening so that it does not become too wide.

[0070] [Ventilation system] A ventilation system 2000C using the above-mentioned ventilation register 100 or the ventilation device 100B will be described with reference to the drawings. Fig. 10 is a block diagram showing a schematic configuration of the ventilation system 2000C. The ventilation system 2000C may include either the ventilation register 100 or the ventilation device 100B. The ventilation system 2000C described below is applied to one room of a building constituting a residence, such as a detached house or an apartment building. However, the ventilation system 2000C is not limited to residences and can also be applied to buildings where people stay for only part of the day, such as offices, commercial facilities, hospitals, and public facilities.

[0071] The ventilation system 2000C includes a ventilation register 100 or ventilation device 100B, an outdoor temperature sensor 2002C as an external temperature detection device that detects the temperature outside the room, an indoor temperature sensor 2003C as an internal temperature detection device that detects the temperature inside the room, a human presence sensor 2004C as a human presence detection device that detects people inside the room, a CO2 concentration sensor 2005C as a carbon dioxide concentration detection device that detects the carbon dioxide concentration inside the room, an air conditioning device 2006C that adjusts the temperature inside the room, a communication device 2001C capable of wireless communication with each of the above components, and an external server 2200C capable of communicating with the communication device 2001C through a specified communication network N. The ventilation system 2000C also includes a portable terminal 2300C capable of communicating through the communication network N.

[0072] The outdoor temperature sensor 2002C is installed outside the building near the ventilation register 100 or the ventilation device 100B. Since the outdoor temperature sensor 2002C is installed outside the building, it is preferable that the sensor be water-resistant and weather-resistant. The outdoor temperature sensor 2002C has a temperature detection element capable of detecting air temperature, a communication device capable of wirelessly communicating with the communication device 2001C, and a control circuit that converts the detection output of the temperature detection element into digital data and transmits it to the communication device 2001C via the communication device. The temperature detection element is a thermocouple, a thermistor, a platinum resistance thermometer, or the like. The communication device is for the control circuit to perform wireless communication with the outside. The communication device may be, for example, a device that uses a short-range communication network using radio waves conforming to a protocol such as WiFi or Bluetooth (registered trademark), or a device that uses infrared rays. Since the outdoor temperature sensor 2002C is installed outside the room, it is preferable that the communication device be one that uses radio waves. The control circuit is formed, for example, by a microprocessor. The outdoor temperature sensor 2002C is equipped with a battery as a power source. The battery may be a rechargeable secondary battery. Also, the outdoor temperature sensor 2002C may be configured to be connected to an outdoor outlet to use AC power.

[0073] The indoor temperature sensor 2003C is installed inside the building. The indoor temperature sensor 2003C may be installed near the ventilation register 100 or the ventilation device 100B. The indoor temperature sensor 2003C is generally configured in the same manner as the outdoor temperature sensor 2002C, but the communication device may be one that uses infrared rays. Also, the indoor temperature sensor 2003C may have low water resistance and weather resistance. The indoor temperature sensor 2003C is also equipped with a battery, but may be configured so that it can be connected to an indoor outlet to use AC power.

[0074] The human presence sensor 2004C is preferably installed indoors at a position that allows detection over a wide range. The human presence sensor 2004C has a detection element capable of detecting the presence of a human being, a communication device capable of wirelessly communicating with the communication device 2001C, and a control circuit that converts the detection output of the detection element into digital data and transmits it to the communication device 2001C via the communication device. The detection element may be of an ultrasonic detection type, an infrared detection type, or the like, as long as it is capable of detecting the presence or absence of a human being in a room. The communication device has the same configuration as the indoor temperature sensor 2003C. The control circuit is formed, for example, by a microprocessor. The power supply for the human presence sensor 2004C has the same configuration as that for the indoor temperature sensor 2003C.

[0075] The CO2 concentration sensor 2005C is preferably installed indoors at a position lower than the height of a human being. The CO2 concentration sensor 2005C has a detection element capable of detecting the concentration of carbon dioxide in a room, a communication device capable of wirelessly communicating with the communication device 2001C, and a control circuit that converts the detection output of the detection element into digital data and transmits it to the communication device 2001C via the communication device. The detection element is, for example, a carbon dioxide concentration sensor of the NDIR (Non Dispersive InfraRed) type. The communication device has the same configuration as the indoor temperature sensor 2003C. The control circuit is formed, for example, by a microprocessor. The power supply for the CO2 concentration sensor 2005C has the same configuration as that for the indoor temperature sensor 2003C.

[0076] The air conditioner 2006C is, for example, a well-known air conditioner. The air conditioner 2006C has at least a cooling function, and is capable of switching the power on and off wirelessly, and more preferably, is capable of adjusting the set temperature. It is even better if the air conditioner 2006C has a heating function and is capable of switching between cooling and heating wirelessly. The wireless communication device may be the same as that of the indoor temperature sensor 2003C. Also, the communication device may be an infrared communication device used in the remote controller of the air conditioner 2006C.

[0077] The communication device 2001C has a function of communicating with the ventilation register 100 or the ventilation device 100B, the outdoor temperature sensor 2002C, the indoor temperature sensor 2003C, the human presence sensor 2004C, the CO2 concentration sensor 2005C, the air conditioner 2006C, and the server 2200C. The communication device 2001C may be capable of communication based on a plurality of wireless communication standards. The communication device 2001C can wirelessly communicate with various sensors 2002C to 2005C, the ventilation register 100, the ventilation device 100B, or the air conditioner 2006C using, for example, a short-range communication network conforming to a protocol such as WiFi or Bluetooth (registered trademark) or using infrared communication. Furthermore, the communication device 2001C is capable of communicating with the server 2200C using a communication network N such as a mobile communication network terminated in a base station, a satellite communication network using communication satellites in the sky, or an Internet communication network.

[0078] The communication device 2001C, with the above configuration, receives detection results from the various sensors 2002C to 2005C and transmits them to the server 2200C. Furthermore, the communication device 2001C transmits the operation command received from the server 2200C to the ventilation register 100 or the ventilation device 100B and the air conditioner 2006C.

[0079] The portable terminal 2300C is an information processing terminal capable of communicating with the server 2200C, and is preferably portable. For example, the portable terminal 2300C is a smartphone, a tablet, a portable PC (personal computer), etc. The portable terminal 2300C functions as a command input device for inputting a command to the ventilation system 2000C by a person carrying the portable terminal 2300C.

[0080] The server 2200C is a server device mainly composed of one or more server computers. The server device may be a server owned by an individual, or may be a rental server. The server 2200C may be a so-called cloud server. The server 2200C may be a general-purpose computer terminal of a fixed or portable type. The server 2200C controls the operation of the entire ventilation system 2000C through the communication device 2001C. The details of the operation control will be described later.

[0081] [Configuration of ventilation register suitable for ventilation system] Here, a suitable configuration for incorporating the ventilation register 100 or ventilation device 100B into the ventilation system 2000C will be described. Due to the nature of its control, the ventilation system 2000C may be required to perform ventilation in the ventilation register 100 or ventilation device 100B using the mixing and circulation section 60 or 60B to take in indoor air without mixing it with the outdoor air. For this reason, the ventilation register 100 and the ventilation device 100B used in the ventilation system 2000C may be configured to include the inside air mixing stop mechanism 46C or 46D. These will be described with reference to the drawings.

[0082] FIG. 11 shows a cross-sectional view of a surface along the front-rear and up-down directions of a configuration in which the inside air mixing stop mechanism 46C is mounted in the ventilation register 100. The inside air mixing stop mechanism 46C is composed of a shutter mechanism capable of closing the range where the indoor air is taken in through the air inlet 321 toward the mixing and circulating section 60. The shutter can be opened and closed by an actuator, and the flow of indoor air through the mixing and circulating section 60 can be blocked by an external command. The ventilation register 100 is equipped with an inside air mixing stop mechanism 46C, which makes it possible to perform ventilation by switching between an inside air mixing ventilation state in which outside air is mixed with indoor air and taken in, and an inside air mixing stop ventilation state in which outside air is taken in without mixing it with indoor air. The inside air mixing stop mechanism 46C may be provided on the blower 11 side of the mixing and circulating section 60 relative to the above-mentioned position.

[0083] In addition, the inside air mixing stop mechanism 46C may be mounted on a ventilation register 100 having only one of the blowers 11 or 12. As shown in FIG. 12, in the case of a ventilation register 100 equipped only with a blower 11, the internal air mixing stop mechanism 46C is arranged in the mixed circulation section 60 at a position where the mixed circulation section 60 merges with the second circulation section 30, or at a position closer to the exhaust outlet 221 than the merged position and up to the position just before the merged position with the first circulation section 20. Also, as shown in FIG. 13, in the case of a ventilation register 100 equipped only with a blower 12, the internal air mixing stop mechanism 46C is arranged in the mixed circulation section 60 at a position where the mixed circulation section 60 merges with the second circulation section 30, or at a position closer to the exhaust outlet 221 than the merged position and up to the position just before the merged position with the first circulation section 20.

[0084] [Configuration of ventilation equipment suitable for ventilation system] FIG. 14 shows a cross-sectional view taken along line DD in FIG. 8 of a configuration in which an inside air mixing stop mechanism 46D is mounted in a ventilation device 100B. The inside air mixing stop mechanism 46D is provided at the position of the mixed circulation section 60B, which is an opening between the rear end of the partition section 1003Ba of the front cover 1003B and the front surface of the rear cover 1004B, and is composed of a shutter mechanism capable of closing the opening. The shutter can be opened and closed by an actuator, and the flow of indoor air through the mixed circulation section 60B can be blocked by an external command.

[0085] The ventilation device 100B is equipped with an inside air mixing stop mechanism 46D, and is therefore capable of performing ventilation by switching between an inside air mixing ventilation state in which outside air is mixed with indoor air and taken in, and an inside air mixing stop ventilation state in which outside air is taken in without mixing with indoor air. The ventilation device 100B incorporated in the ventilation system 2000C may have only one of the fans 11B and 12B. In this case as well, the inside air mixing stop mechanism 46D is provided at the position of the mixed circulation section 60B, which is the opening.

[0086] In addition, in the ventilation system 2000C, the ventilation register 100 or the ventilation device 100B needs to perform wireless communication with the communication device 2001C. Therefore, as shown in FIG. 15, the ventilation register 100 or the ventilation device 100B is configured to include a communication device 52C that receives commands from the outside, and a control device 51C that controls the blower 11, 12 (or 11B, 12B) and the internal air mixing stop mechanism 46C (or 46D) based on the received commands.

[0087] The communication device 52C has a similar configuration to the indoor temperature sensor 2003C. The control device 51C is configured with, for example, a microprocessor. The power supply for the ventilation register 100 or ventilation device 100B is configured similarly to the indoor temperature sensor 2003C.

[0088] [Outdoor air cooling control in ventilation systems] The outdoor air cooling control in the ventilation system 2000C will be described with reference to the conceptual diagram of Fig. 16 and the flowchart of Fig. 17. The flowchart of Fig. 17 shows the control performed by the CPU of the server 2200C on each component via the communication device 2001C by executing a predetermined program. This control may be repeatedly performed periodically. This outdoor air cooling control is a control in which the indoor temperature becomes higher than the outdoor temperature, and the indoor temperature is cooled by taking in outdoor air. For example, during the period from spring to early summer or autumn, when warm air remains indoors during the day and the outdoor temperature drops at night, the indoor temperature is cooled without using the air conditioner 2006C.

[0089] First, in the outdoor air cooling control, the CPU of the server 2200C (hereinafter, simply referred to as the CPU) determines whether or not there is a command to execute outdoor air cooling from the portable terminal 2300C (step S1). If the CPU determines that an outside air cooling execution command has been issued, the CPU advances the process to step S3. On the other hand, if it is determined that there is no command to perform outdoor air cooling, the detection result of the human presence sensor 2004C is obtained to determine whether or not a person is present in the target room (step S2). If no one is present, the control ends.

[0090] On the other hand, if there is a command to execute outdoor air cooling or if someone is present, the CPU acquires the detection result of the indoor temperature sensor 2003C and determines whether the temperature is equal to or higher than a predetermined execution temperature for outdoor air cooling (step S3). If the temperature does not reach the implementation temperature, the control ends.

[0091] On the other hand, when the indoor temperature is equal to or higher than the outdoor air cooling implementation temperature, the CPU acquires the detection result of the outdoor temperature sensor 2002C, subtracts the outdoor temperature from the indoor temperature, and calculates the temperature difference. Furthermore, the CPU determines whether or not the temperature difference is greater than a predetermined threshold value for starting outdoor air cooling (step S5). As a result, if the temperature difference between the indoor temperature and the outdoor temperature is not greater than the start threshold value, the control is ended.

[0092] On the other hand, if the temperature difference between the indoor temperature and the outdoor temperature is greater than the start threshold, and if air conditioner 2006C is operating, the CPU sends a stop command to air conditioner 2006C (step S7). Furthermore, the CPU transmits a command to the ventilation register 100 or the ventilation device 100B to control the inside air mixing stop mechanism 46C or 46D to switch to the inside air mixing stop ventilation state (step S9). Then, the CPU transmits a ventilation start command to the ventilation register 100 or the ventilation device 100B (step S11). As a result, outside air is taken into the room in a ventilation state with inside air mixing stopped, thereby lowering the temperature inside the room.

[0093] After that, the CPU again obtains the detection results of the outdoor temperature sensor 2002C and the indoor temperature sensor 2003C, subtracts the outdoor temperature from the indoor temperature, and calculates the temperature difference. Furthermore, it determines whether the temperature difference between the outdoor temperature and the indoor temperature is greater than a preset threshold value for stopping outdoor air cooling (step S13). When the temperature difference between the indoor temperature and the outdoor temperature is greater than a preset threshold value for stopping outdoor air cooling, ventilation is continued.

[0094] On the other hand, if the temperature difference between the indoor temperature and the outdoor temperature becomes equal to or less than the preset threshold for stopping outdoor air cooling, the CPU sends a ventilation stop command to the ventilation register 100 or the ventilation device 100B (step S11) and terminates control.

[0095] [CO2 concentration adjustment control] The CO2 concentration adjustment control in the ventilation system 2000C will be described based on the conceptual diagram of Fig. 18 and the flowchart of Fig. 19. The flowchart of Fig. 19 shows the control performed by the CPU of the server 2200C for each component through the communication device 2001C by executing a predetermined program. This control may be repeatedly performed periodically. This CO2 concentration adjustment control is a control that adjusts the CO2 concentration to a specified level or lower by ventilating the room.

[0096] First, in the CO2 concentration adjustment control, the CPU of the server 2200C (hereinafter, simply referred to as the CPU) determines whether or not there is a command to execute the CO2 concentration adjustment control from the portable terminal 2300C (step S21). Then, when the CPU determines that there is a command to execute the CO2 concentration adjustment control, the CPU advances the process to step S23. On the other hand, if it is determined that there is no command to execute the CO2 concentration adjustment control, the detection result of the human presence sensor 2004C is acquired to determine whether or not a person is present in the target room (step S22). If no one is present, the control ends.

[0097] On the other hand, if there is a command to execute the CO2 concentration adjustment control or if there is a person present, the CPU acquires the detection result of the CO2 concentration sensor 2005C and determines whether or not the result is greater than a predetermined execution threshold for the CO2 concentration adjustment control (step S23). If the indoor CO2 concentration is equal to or lower than the implementation threshold, the control ends.

[0098] On the other hand, if the CO2 concentration in the room exceeds the implementation threshold, the CPU transmits a ventilation start command to the ventilation register 100 or the ventilation device 100B (step S25). This allows outside air to be drawn into the room, lowering the CO2 concentration inside the room. In addition, in the case of CO2 concentration adjustment control, the ventilation register 100 or the ventilation device 100B performs ventilation in the inside air mixing ventilation state.

[0099] After that, the CPU again acquires the detection result of the CO2 concentration sensor 2005C and determines whether or not the indoor CO2 concentration is greater than a preset threshold value for stopping the CO2 concentration adjustment control (step S27). When the CO2 concentration in the room is higher than a preset threshold value for stopping the CO2 concentration adjustment control, ventilation is continued.

[0100] On the other hand, if the CO2 concentration in the room falls below a preset threshold for stopping the CO2 concentration adjustment control, the CPU sends a ventilation stop command to the ventilation register 100 or the ventilation device 100B (step S29) and terminates the control.

[0101] [Technical effect of ventilation system] As described above, the ventilation system 2000C can cool the room with outside air without using the air conditioner 2006C by executing outside air cooling control, and can implement excellent ventilation from the viewpoint of energy saving.

[0102] Furthermore, by executing the CO2 concentration adjustment control, the ventilation system 2000C can suppress an increase in the CO2 concentration in the room even if people do not notice it, and can maintain the CO2 concentration at an appropriate level.

[0103] In addition, the above-mentioned outdoor air cooling control is executed when people are present in the room, but this is not limited thereto, and outdoor air cooling may be executed automatically even when no one is present in the room. In particular, since the ventilation system 2000C can communicate with the portable terminal 2300C through the communication network N, if it is determined that the resident is not present in step S2 of the outdoor air cooling control of the outdoor air cooling control, the server 2200C can communicate with the portable terminal 2300C to obtain the resident's current location information, and if the resident is approaching within a specified distance of the target building, control can be performed to continue processing from step S3 onwards.

[0104] [others] Above, each embodiment of the present invention has been described. However, the present invention is not limited to the above-mentioned embodiments. For example, in the embodiments, a component integrally formed from a single member may be replaced with a component divided into a plurality of members and connected or fixed to each other. Also, a component formed by connecting a plurality of members may be replaced with a component integrally formed from a single member. In addition, the details shown in the embodiments can be appropriately changed without departing from the spirit of the invention.

[0105] For example, in the above-described ventilation system 2000C, when the outside air cooling control is performed and the CO2 concentration adjustment control is not performed, the CO2 concentration sensor 2005C may be omitted from the configuration. In addition, in the case where the ventilation system 2000C performs the CO2 concentration adjustment control and does not perform the outdoor air cooling control, the outdoor temperature sensor 2002C, the indoor temperature sensor 2003C, and the air conditioner 2006C may be removed from the configuration. In addition, the ventilation register 100 or the ventilation device 100B may not have the inside air mixing stop mechanisms 46C, 46D. Furthermore, in the ventilation system 2000C, when the outdoor air cooling control or the CO2 concentration adjustment control is executed only in response to an execution command from the portable terminal 2300C, the human presence sensor 2004C may be omitted from the configuration.

[0106] Further, as the ventilation system 2000C, a configuration in which the server 2200C executes the processes of outdoor air cooling control and CO2 concentration adjustment control through the communication network N has been exemplified, but the present invention is not limited to this. For example, a control device that processes information may be connected to the communication device 2001C via a wired connection or a local area network, without going through the communication network N, and the outdoor air cooling control and the CO2 concentration adjustment control may be performed by the control device connected to the communication device 2001C. Also, a control function that processes information may be added to the communication device 2001C, and the communication device 2001C may function as a control device that processes outdoor air cooling control and CO2 concentration adjustment control. In addition, an application executed by the portable terminal 2300C may execute the processes of outdoor air cooling control and CO2 concentration adjustment control, and control each component of the ventilation system 2000C through the communication network N. In this case, the portable terminal 2300C functions as a control device. [Explanation of symbols]

[0107] 11,11B,12,12B Blower 20,20B First Distribution Department 21 Main pipeline 22 Indoor pipeline 23 Outdoor pipe line 30,30B Second Distribution Department 31 Main pipeline 32 Indoor pipe line 33 Outdoor pipe line 46C, 46D Air mixture stop mechanism 51C Control device (ventilation control device) 52C Communication equipment 100 Ventilation register (ventilation device) 100B Ventilation equipment 111B spout 121B spout 221,221B,331,331B Outlet 231, 231B, 321, 321B Intake port 1000B opening device 1001B Eyeless 1002B Glass Panel 1003B Front cover 1004B Rear cover 1100B frame 2000C Ventilation System 2001C Communication equipment 2002C Outdoor Temperature Sensor 2003C Indoor Temperature Sensor 2004C Human Sensor 2005C CO2 concentration sensor 2006C Air Conditioner 2200C Server 2300C Portable terminal (command input device) B Through hole N Communication Network W Wall

Claims

1. A first flow section that configures a flow path for flowing air from outdoors to indoors; A second flow passage that configures a flow path for flowing air from indoors to outdoors; a mixing and circulating section that configures a flow path that mixes air from the indoors with air from the outdoors in the first circulating section; a blower for circulating air through a flow path of each of the first flow section, the second flow section, and the mixed flow section; A ventilation device comprising:

2. 2. The ventilation device according to claim 1, wherein the first flow section and the second flow section are each provided with the blower.

3. The ventilation device according to claim 1 , wherein air is circulated through the flow path of the mixed circulation section by the blower provided in the first circulation section or the second circulation section.

4. The ventilation device according to claim 1, further comprising an inside air mixing stop mechanism that stops the flow of air through the flow path of the mixed flow section.

5. A wireless communication device; a ventilation control device that controls the operation of the blower based on an external command received by the wireless communication device, 2. The ventilation device according to claim 1, characterized in that it is capable of communicating with the outside.

6. A wireless communication device; a ventilation control device that controls operation of the blower and the inside air mixing stop mechanism based on an external command received by the wireless communication device, 5. The ventilation device according to claim 4, characterized in that it is capable of communicating with the outside.

7. An opening device to be installed in an opening of a building frame, An opening device comprising the ventilation device according to any one of claims 1 to 6, which is provided inside a frame body attached to the opening.

8. A ventilation register equipped with a ventilation device described in any one of claims 1 to 6, in which at least a portion of the flow path of the first circulation section and the flow path of the second circulation section are arranged inside a through hole in the structure of a building.

9. A ventilation device according to claim 6; An air conditioning device that adjusts the temperature inside the building; An external temperature detection device for detecting the temperature outside the building; An internal temperature detection device for detecting the temperature inside a building; a control device capable of communicating with the ventilation device, the air conditioning device, the external temperature detection device, and the internal temperature detection device; The control device determines the temperature difference between the outside and inside of the room using the external temperature detection device and the internal temperature detection device, and, depending on the temperature difference, stops the air conditioning device and operates the ventilation device while stopping the flow of air through the flow path of the mixed circulation section.

10. A command input device is provided for a person to input a command, The ventilation system according to claim 9, characterized in that the control device stops the air conditioning device in response to the temperature difference and an execution command from the command input device, and operates the ventilation device in a state where air flow through the flow path of the mixed flow section is stopped.

11. a human presence detection device for detecting a human being inside the building; The ventilation system described in claim 9, characterized in that the control device stops the air conditioning device and operates the ventilation device with the flow of air stopped in the flow path of the mixed flow section depending on the temperature difference and the presence or absence of a human in the room detected by the human detection device.

12. The ventilation device according to claim 5 or 6, A carbon dioxide concentration detection device for detecting a carbon dioxide concentration in a room; A control device capable of communicating with the ventilation device and the carbon dioxide concentration detection device, The ventilation system is characterized in that the control device operates the ventilation device in response to the carbon dioxide concentration detected by the carbon dioxide concentration detection device.

13. A command input device is provided for a person to input a command, The ventilation system according to claim 12, wherein the control device operates the ventilation device in response to the carbon dioxide concentration detected by the carbon dioxide concentration detection device and an execution command from the command input device.

14. Equipped with a human presence detection device that detects people in the room, The ventilation system according to claim 12, characterized in that the control device operates the ventilation device depending on the carbon dioxide concentration detected by the carbon dioxide concentration detection device and the presence or absence of a human being in the room detected by the human presence detection device.

15. A ventilation device according to claim 6; An air conditioning device that adjusts the temperature inside the building; An external temperature detection device for detecting the temperature outside the building; An internal temperature detection device for detecting the temperature inside a building; A method for controlling a ventilation system comprising: A method for controlling a ventilation system, characterized in that the temperature difference between the outside and inside of a room is calculated using the external temperature detection device and the internal temperature detection device, and, depending on the temperature difference, the air conditioning device is stopped and the ventilation device is operated while the flow of air through the flow path of the mixed flow section is stopped.

16. The ventilation system includes a command input device for inputting a command by a person, The control method for a ventilation system according to claim 15, characterized in that, in response to the temperature difference and an execution command from the command input device, the air conditioning device is stopped and the ventilation device is operated in a state where air flow through the flow path of the mixed flow section is stopped.

17. The ventilation system includes a human presence detection device that detects a human in the room, The control method for a ventilation system as described in claim 15, characterized in that, depending on the temperature difference and the presence or absence of a human being in the room detected by the human detection device, the air conditioning device is stopped and the ventilation device is operated with the flow of air in the flow path of the mixed flow section stopped.

18. The ventilation device according to claim 5 or 6, A carbon dioxide concentration detection device for detecting a carbon dioxide concentration in a room; A method for controlling a ventilation system comprising: A method for controlling a ventilation system, comprising controlling the operation of the ventilation device in accordance with the carbon dioxide concentration detected by the carbon dioxide concentration detection device.

19. The ventilation system includes a command input device for inputting a command by a person, The control method for a ventilation system according to claim 18, characterized in that the operation of the ventilation device is controlled in response to the carbon dioxide concentration detected by the carbon dioxide concentration detection device and an execution command from the command input device.

20. The ventilation system includes a human presence detection device that detects a human in the room, The control method for a ventilation system according to claim 18, characterized in that the operation of the ventilation device is controlled depending on the carbon dioxide concentration detected by the carbon dioxide concentration detection device and the presence or absence of a human in the room detected by the human presence detection device.

Images