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; blowers 11, 12 which are provided in at least one of the first circulation part 20 and the second circulation part 30 and cause air to circulate in a predetermined direction; and a heat exchanger 40 which conducts heat exchange between air circulating in the passage of the first circulation part 20 and air circulating in the passage of the second circulation part 30.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 result in a reduction in the air conditioning efficiency of an air conditioner, and it has been difficult to use them in combination with an air conditioner in an appropriate manner 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 blower provided in at least one of the first circulating portion and the second circulating portion to circulate air in a predetermined direction; a heat exchanger that performs heat exchange between air flowing through a flow path of the first circulation portion and air flowing through a flow path of the second circulation portion; 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 based on the temperature difference, stops the air conditioning device and operates the ventilation device without performing heat exchange.

[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 without performing heat exchange.

[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 only 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] This is a cross-sectional view along a plane along the front-to-back direction and the vertical up-down direction of a ventilation register in which a blower is installed only in the second circulation section. [Figure 6] FIG. 6 is a cross-sectional view of the ventilation register taken along line CC in FIG. 5 . [Figure 7] 11 is a cross-sectional view of a ventilation register of a second embodiment taken along a plane along the front-to-back direction and the vertical up-down direction. FIG. [Figure 8] FIG. 8 is a cross-sectional view of the ventilation register taken along line DD in FIG. [Figure 9] 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 only in the first flow section. [Figure 10] FIG. 10 is a cross-sectional view of the ventilation register taken along line EE in FIG. [Figure 11] 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 only in the second circulation section. [Figure 12] FIG. 12 is a cross-sectional view of the ventilation register taken along line FF in FIG. 11 . [Figure 13] FIG. 11 is a front view of the opening device of the third embodiment. [Figure 14] FIG. 14 is a cross-sectional view of the ventilation device taken along line GG in FIG. 13. [Figure 15] FIG. 14 is a cross-sectional view of the ventilation device taken along line HH in FIG. 13. [Figure 16] FIG. 16 is a cross-sectional view of the ventilation device taken along line II in FIGS. 14 and 15. [Figure 17] FIG. 17 is a cross-sectional view of the ventilation device taken along line JJ in FIGS. [Figure 18] FIG. 16 is a cross-sectional view of the ventilation device taken along line KK in FIGS. 14 and 15. [Figure 19] FIG. 2 is a block diagram showing a schematic configuration of a ventilation system. [Figure 20] 13 shows cross-sectional views along the front-to-back and top-to-bottom directions of a configuration in which a heat exchange avoidance mechanism is installed in a ventilation register in a heat exchange enabled state. [Figure 21] 13 shows a cross-sectional view along the front-to-back and top-to-bottom directions of a configuration in which a heat exchange avoidance mechanism is mounted in a ventilation register in a heat exchange avoidance state. [Figure 22] 14 is a cross-sectional view taken along line GG in FIG. 13 showing a configuration in which a heat exchange avoidance mechanism is mounted in a ventilation device. [Figure 23] 14 is a cross-sectional view taken along line HH in FIG. 13 showing a configuration in which a heat exchange avoidance mechanism is mounted in a ventilation device. [Figure 24] FIG. 2 is a block diagram showing a schematic configuration of a ventilation device or a ventilation register of the ventilation system. [Diagram 25] FIG. 1 is a conceptual diagram of outdoor air cooling control in a ventilation system. [Figure 26] 11 is a flowchart of outdoor air cooling control in the ventilation system. [Figure 27] FIG. 1 is a conceptual diagram of CO2 concentration adjustment control in a ventilation system. [Figure 28] 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 forms a flow path for circulating air from outdoors to indoors, a second circulation section 30 that forms a flow path for circulating air from indoors to outdoors, fans 11, 12 provided separately in the first circulation section 20 and the second circulation section 30, and a heat exchanger 40 that exchanges heat between air circulating through the flow path of the first circulation section 20 and air circulating 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 upper end of the indoor duct 22 is open toward the top, and the lower end 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 is connected to 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. An upper end of the indoor duct 22 serves as an outlet 221 for outdoor air.

[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 lower end of the indoor duct 32 is open downward, and the upper end is connected to the main duct 31. The indoor duct 32 is a tubular body with 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. A lower end of the indoor duct 32 serves as an intake port 321 for indoor air.

[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] The first flow section 20 and the second flow section 30 are formed from a material having necessary strength and weather resistance, such as resin or 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.

[0029] 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 flow section 20 and the indoor duct 32 of the second flow section 30 may be integrally formed by connecting their opposing ends and have a partition wall therein. 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 the integrated outdoor pipes 23, 33 may be integrally connected to each other by a method such as joining, bonding, or screwing.

[0030] In addition, the cross-sectional shapes of the indoor pipes 22, 32 and the outdoor pipes 23, 33 are 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 and the outdoor pipes 23, 33 can be arranged along the indoor surface and outdoor surface of the wall W, respectively, and the amount of protrusion from the indoor surface or outdoor surface of the wall W can be reduced.

[0031] [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.

[0032] The blower 11 is disposed in the indoor duct 22 of the first flow section 20, and circulates air from the outdoor side to the indoor side. It is preferable that a sealant is inserted between the blower 11 and the duct wall of the indoor duct 22 so that no gap is generated. The blower 11 may be disposed inside the outdoor duct 23 or may be disposed near the outside of the indoor duct 22 or the outdoor duct 23.

[0033] The blower 12 is disposed in the indoor duct 32 of the second flow section 30, and circulates air from the indoor side to the outdoor side. It is preferable that a sealant is inserted between the blower 12 and the duct wall of the indoor duct 32 so that no gap is generated. The blower 12 may be disposed inside the outdoor duct 33 , or may be disposed near the outside of the indoor duct 32 or the outdoor duct 33 .

[0034] [Heat exchange body] The heat exchanger 40 exchanges heat between the air flowing through the flow passage of the first circulating section 20 and the air flowing through the flow passage of the second circulating section 30. For example, when there is a temperature difference between the air flowing through the flow passage of the first circulating section 20 and the air flowing through the flow passage of the second circulating section 30, the heat exchanger 40 absorbs heat from the air with a higher temperature and releases heat to the air with a lower temperature.

[0035] The heat exchange element 40 has a first portion 41 exposed to air flowing through the flow passage of the first flow section 20 and a second portion 42 exposed to air flowing through the flow passage of the second flow section 30 . Both the first portion 41 and the second portion 42 are made of a material having a high thermal conductivity. The first section 41 and the second section 42 are preferably formed from a material having a higher thermal conductivity than the first flow section 20 and the second flow section 30 . The higher the thermal conductivity of the first portion 41 and the second portion 42, the better. Here, the first portion 41 and the second portion 42 are formed of a metal having a high thermal conductivity, such as gold, silver, copper, aluminum, or an alloy thereof.

[0036] Here, the main pipe 21 of the first flow section 20 and the main pipe 31 of the second flow section 30 are integrally formed by a circular pipe, and the partition wall that forms the boundary between the flow path in the main pipe 21 and the flow path in the main pipe 31 is mostly cut out, and a heat exchanger 40 is disposed therein. The first portion 41 of the heat exchange body 40 is disposed within the main duct 21 , and the second portion 42 is disposed within the main duct 31 .

[0037] The first portion 41 and the second portion 42 each have a rectangular flat plate-shaped base portion 411, 421 and a plurality of fins 412, 422 provided vertically on one side of the base portion 411, 421. The width in the left-right direction of each of the base plate portions 411 and 421 is approximately equal to the inner diameter of the circular pipe that integrates the main pipes 21 and 31, as shown in FIG. 1, the length of each of the base plate portions 411, 421 in the front-rear direction is approximately equal to the length of each of the main pipes 21, 31 in the front-rear direction. The substrate portions 411 and 421 are integrally connected in an overlapping state, and the heat exchange body 40 is arranged inside the circular pipe such that they divide the inside of the circular pipe integrating the main pipes 21 and 31 into upper and lower halves. As a result, the substrate portion 411 and the substrate portion 421 function integrally as a partition between the main pipe line 21 and the main pipe line 31 .

[0038] The substrate portion 411 of the first section 41 and the substrate portion 421 of the second section 42 are connected to each other so that there is as little gap as possible between their opposing surfaces in order to maintain a high thermal conductivity. The connection method may be any known method such as gluing, welding, or screwing. However, when bonding, an adhesive with as high a thermal conductivity as possible should be used. Also, when screwing, etc., a metal paste with a high thermal conductivity may be inserted between the contacting surfaces. Alternatively, the substrate portion 411 of the first portion 41 and the substrate portion 421 of the second portion 42 may be configured as a single flat plate made of a metal or the like having a high thermal conductivity. In other words, the first portion 41 and the second portion 42 may be integrated together.

[0039] The multiple fins 412 erected on one side of the base plate portion 411 all face upward as shown in FIG. 2, and extend to a length that minimizes gaps between the inner wall surface of the main pipe 21 and the main pipe 21. Similarly, the multiple fins 422 erected on one side of the base portion 421 are all directed downward as shown in FIG. 2 and extend to a length that minimizes gaps between them and the inner wall surface of the main pipe 31. The fins 412 and the substrate portion 411 of the first portion 41 are preferably integrally formed of the same material. Similarly, the fins 422 and the substrate portion 421 of the second portion 42 are preferably integrally formed of the same material.

[0040] Each of the fins 412, 422 is plate-shaped. Each of the fins 412, 422 is preferably thin, and the number of fins is preferably large. In addition, the gap between adjacent fins 412, 422 is preferably narrow. Furthermore, each of the fins 412, 422 may be rod-shaped instead of plate-shaped. In that case, too, it is better for each of the fins 412, 422 to have a large number of fins, a small outer diameter, and narrow gaps. As a result, the surface areas of the first portion 41 and the second portion 42 are increased, and the air passing through the main ducts 21 and 31 can transfer heat effectively.

[0041] [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.

[0042] 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. At this time, the indoor air passes through gaps between the multiple fins 422 in the second portion 42 of the heat exchange body 40 in the main duct 31. Since the indoor air has been cooled by the air conditioner, it cools the heat exchange body 40 through the multiple fins 422.

[0043] Meanwhile, the blower 11 takes in outdoor air from the inlet 231 of the outdoor duct 23 of the first flow section 20. The outdoor air passes from the main duct 21 to the indoor duct 22 and is discharged from the outlet 221 into the room. At this time, the outdoor air passes through gaps between the multiple fins 412 in the first section 41 of the heat exchange body 40 in the main duct 21. Since the second section 42 side of the heat exchange body 40 is cooled, heat is removed from the outdoor air as it passes through the first section 41, and the cooled outdoor air is discharged into the room from the exhaust port 221.

[0044] The ventilation register 100 cools the outdoor air and ventilates the room 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 air inside the room is warmer than the air outside due to the heating function of the air conditioner. That is, even when the air conditioner is using the heating function, the heat exchanger 40 warms the outside air with the air inside the room to perform ventilation, so ventilation can be performed while suppressing a drop in the indoor temperature.

[0045] [Technical effect of ventilation registers] In this way, the ventilation register 100 is equipped with a heat exchange body 40 that exchanges heat between the air flowing through the flow path of the first flow section 20 and the air flowing through the flow path of the second flow section 30, so that ventilation can be performed while heat is being exchanged between the air inside the room and the air outside the room. 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.

[0046] In addition, in the ventilation register 100, a heat exchanger 40 is disposed so as to penetrate the partition wall between the flow passages of the first flow section 20 and the flow passages of the second flow section 30. Therefore, the high temperature side and the low temperature side of the heat exchange body 40 can be closely spaced, and heat exchange can be performed with high efficiency. Therefore, it is possible to perform suitable ventilation while more effectively suppressing a decrease in the cooling or heating efficiency of the air conditioner.

[0047] 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.

[0048] Furthermore, the indoor duct 22 of the first flow section 20 and the indoor duct 32 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. 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.

[0049] [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.

[0050] In the case of a ventilation register 100 having only a blower 11, the outside air is sent into the room through the first circulating section 20 by driving the blower 11. The air pressure inside the room increases due to the airtightness, and the air inside the room can be sent to the outside through the second circulating section 30. 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.

[0051] In the case of the ventilation register 100 having only the blower 12, the driving of the blower 12 sends indoor air to the outside through the second circulating section 30. The air pressure inside the room decreases due to the airtightness, and the outdoor air can be taken into the room through the first circulating section 20. 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.

[0052] [Second embodiment] A second embodiment of the ventilation device according to the present invention will be described with reference to the drawings. FIG. 7 is a cross-sectional view of a ventilation register 100A according to the second embodiment, taken along a plane perpendicular to a wall W and extending in the vertical direction, and FIG. 8 is a cross-sectional view taken along line DD in FIG.

[0053] The ventilation register 100A is characterized by a heat exchange body 40A. The configuration of the ventilation register 100A other than the heat exchange body 40A is the same as that of the ventilation register 100. Therefore, the configuration other than the heat exchange body 40A is given the same reference numerals as the ventilation register 100 and the description thereof is omitted.

[0054] In the heat exchange body 40A, a Peltier element 43A is provided between the substrate portion 411 of the first section 41 and the substrate portion 421 of the second section 42 as an element that absorbs and releases heat using electric power. Peltier element 43A absorbs heat from the surface of substrate portion 411 on which fins 412 are not provided, and dissipates heat from the surface of substrate portion 421 on which fins 422 are not provided. Between the substrate portion 411 and the substrate portion 421, a partition wall between the main pipe line 21 and the main pipe line 31 is interposed, and the substrate portion 411 and the substrate portion 421 are disposed so as not to come into direct contact with each other. A cable for supplying power to the Peltier element 43A is wired, for example, in a through hole or groove (not shown) formed in the flat plate of the partition wall between the main duct 21 and the main duct 31.

[0055] A case where ventilation is performed by the ventilation register 100A in the cooling state will be described. The blower 11 of the first flow section 20 and the blower 12 of the second flow section 30 are driven. When indoor air is taken in from inlet 321 of indoor pipe 32 of second flow section 30 by blower 12, the air passes through gaps between multiple fins 422 of second portion 42 of heat exchanger 40A. Since the indoor air is cooled by an air conditioner, second portion 42, which is the heat dissipation side of Peltier element 43A, is cooled through multiple fins 422.

[0056] Meanwhile, the outdoor air taken in by the blower 11 from the inlet 231 of the outdoor pipe 23 of the first flow section 20 passes through gaps between the multiple fins 412 of the first portion 41 of the heat exchanger 40. Since the first portion 41 of the heat exchanger 40A is cooled by the Peltier element 43A, heat is removed from the outdoor air as it passes through the first portion 41, and the cooled outdoor air is discharged from the outlet 221 into the room.

[0057] The Peltier element 43A has a characteristic that the temperature difference between the heat absorption side and the heat radiation side is limited to a predetermined range, but the ventilation register 100A can cool the second part 42 connected to the heat radiation side of the Peltier element 43A with the exhausted indoor air. Therefore, the outdoor air taken in for ventilation can be efficiently cooled by the first part 41 connected to the heat absorption side of the Peltier element 43A.

[0058] In addition, the heat absorption side and heat radiation side of Peltier element 43A can be reversed by switching the direction of current flow between forward and reverse. Therefore, even when ventilation is performed using the ventilation register 100A in heating mode, the outside air taken in for ventilation can be efficiently heated by the first part 41 connected to the heat absorption side of the Peltier element 43A.

[0059] Therefore, the ventilation register 100A can ventilate the room while exchanging heat between the indoor air and the outdoor air, thereby suppressing the effects of the temperature difference between the indoor air and the outdoor air and enabling ventilation between the indoor and outdoor air while suppressing a decrease in the efficiency of the air conditioning system's cooling and heating functions.

[0060] In addition, the ventilation register 100A may also be configured to have only one of the fans 11 and 12. FIG. 9 is a cross-sectional view of a ventilation register 100A having only a blower 11, taken along a plane perpendicular to a wall W and extending in the vertical direction, and FIG. 10 is a cross-sectional view taken along line EE in FIG. 11 is a cross-sectional view of a ventilation register 100A having only a blower 12, taken along a plane perpendicular to a wall W and extending in the vertical direction, and FIG. 12 is a cross-sectional view taken along line FF in FIG. In the case of the ventilation register 100A equipped only with a blower 11 or a blower 12, like the ventilation register 100A shown in Figures 7 and 8, it is possible to perform ventilation effectively while suppressing a decrease in the efficiency of the cooling or heating of the air conditioner.

[0061] [Third embodiment] A third 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.

[0062] FIG. 13 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".

[0063] 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 the frame body 1100B is fixedly fitted. However, the opening device 1000B may be an openable and closable shoji screen with the frame body 1100B as a frame. In this case, the transom 1001B functions as a middle rail.

[0064] A ventilation device 100B is disposed inside a frame body 1100B of the opening device 1000B and above a transom 1001B. 14 is a cross-sectional view of the ventilation device 100B taken along line GG in FIG. 13, FIG. 15 is a cross-sectional view taken along line HH in FIG. 13, FIG. 16 is a cross-sectional view taken along line II in FIGS. 14 and 15, FIG. 17 is a cross-sectional view taken along line JJ in FIGS. 14 and 15, and FIG. 18 is a cross-sectional view taken along line KK in FIGS. 14 and 15.

[0065] The ventilation device 100B has a first circulating section 20B that forms a flow path for circulating air from outdoors to indoors, arranged in an upper level within the area inside the frame body 1100B and above the interlining 1001B, and a second circulating section 30B that forms a flow path for circulating air from indoors to outdoors, arranged in a lower level within the same area. Furthermore, a blower 11B is provided in the first flow section 20B, and a blower 12B is provided in the second flow section 30B. A heat exchanger 40B is arranged to vertically penetrate the partition 13B that separates the first circulation section 20B and the second circulation section 30B, and to exchange heat between the air flowing through the flow path in the first circulation section 20B and the air flowing through the flow path in the second circulation section 30B.

[0066] [First Distribution Department] The first flow portion 20B constitutes a flow path that extends in the left-right direction and has a rectangular cross section. The first flow portion 20B is made of the same metal material as the frame 1100B and the interposer 1001B, for example, an extruded aluminum alloy material.

[0067] The front side of the first circulating section 20B is the outdoors, and the rear side is the indoors. As shown in Fig. 14, the first circulating section 20B has an outdoor air intake port 231B formed as an opening on the front right end side, and an outdoor air exhaust port 221B formed as an opening on the rear left end side. It is preferable to provide a cover or the like on the outside of the intake port 231B to prevent rainwater from entering. A first portion 41B of a heat exchange element 40B is disposed in the center in the left-right direction of the first flow portion 20B. A blower 11B is disposed at the right end of the first flow section 20B, inside the inlet 231B.

[0068] The blower 11B has a casing, blades, and a motor. The blower 11B is a blower fan that, for example, draws in air from the top or bottom of the casing in FIG. 16 and ejects the air from an outlet 111B facing leftward. Reference numeral 112B in FIG. 14 denotes a seal material for preventing the air blown out from the blower 11B from returning to the air inlet 231B side. With this configuration, the fan 11B can circulate the outdoor air taken in through the inlet 231B from right to left through the first flow section 20B and discharge the air into the room through the outlet 221B. It should be noted that other types of fans (axial flow fans, centrifugal fans, etc.) may be used for blower 11B.

[0069] [Second Distribution Department] The second flow passage portion 30B constitutes a flow path extending in the left-right direction and having a rectangular cross section. The first flow passage portion 20B and the second flow passage portion 30B are disposed adjacent to each other vertically over the entire length via the partition wall 13B described above. The second flow portion 30B is made of the same metal material as the frame 1100B and the interposer 1001B, for example, an extruded aluminum alloy material.

[0070] The front side of the second circulating section 30B is the outdoors, and the rear side is the indoors. As shown in Fig. 15, the second circulating section 30B has an indoor air intake port 321B formed as an opening on the rear right end side, and an indoor air exhaust port 331B formed as an opening on the front left end side. The second portion 42B of the heat exchange element 40B is disposed in the center in the left-right direction of the second flow portion 30B. A blower 12B is disposed at the left end of the second flow section 30B, inside the exhaust port 331B.

[0071] Blower 12B is of the same type as blower 11B, and for example, sucks air from the upper or lower surface of the casing in FIG. 18 and ejects the air from ejection port 121B facing forward. Reference numeral 122B in FIG. 15 denotes a sealant for preventing the air blown from the blower 12B from being exhausted from the exhaust port 331B and returning into the second flow section 30B. This configuration enables blower 12B to circulate indoor air taken in through inlet 321B from right to left in second circulation section 30B, and to discharge the air to the outside through outlet 331B. Note that other types of fans (axial flow fans, centrifugal fans, etc.) may be used for the blower 12B. The power supply method for the blowers 11B and 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, power supply by magnetic connection, etc. Wireless power supply and power supply by magnetic connection are particularly suitable when using an openable and closable shoji screen with the frame body 1100B as a frame body.

[0072] [Heat exchange body] The heat exchange body 40B has a first portion 41B exposed to air flowing through the flow passages of the first flow section 20 and a second portion 42B exposed to air flowing through the flow passages of the second flow section 30. The material and structure of the heat exchange element 40B are almost the same as those of the heat exchange element 40 described above. That is, as shown in FIG. 17, the first portion 41B and the second portion 42B each have a rectangular flat plate-shaped substrate portion 411B, 421B and a plurality of fins 412B, 422B provided vertically on one side of the substrate portion 411B, 421B.

[0073] The width in the front-rear direction of the base plate portions 411B and 421B is somewhat narrower than the width in the front-rear direction of the flow paths inside the first flow path portion 20B and the second flow path portion 30B. As a result, a heat insulating material 44B is inserted in the gaps between the front and rear inner walls of the flow paths generated for the heat exchange body 40B. Furthermore, substrate portion 411B and substrate portion 421B function integrally as a partition between the flow path in first flow section 20 and the flow path in second flow section 30.

[0074] The substrate portion 411B and the fins 412B of the first portion 41B and the substrate portion 421B and the fins 422B of the second portion 42B are the same as those of the heat exchange element 40 described above. As shown in FIG. 17, the fins 412B of the first portion 41B and the fins 422B of the second portion 42B extend to the vicinity of the inner upper wall surface of the first flow section 20B and the inner lower wall surface of the second flow section 30B, respectively, and insulation material 45B is also inserted in the gap between each tip and the wall surface. In this way, the heat exchange body 40B is surrounded on all sides except the left and right sides by the heat insulating materials 44B, 45B. Therefore, the heat exchange body 40B can perform heat exchange between the air flowing through the flow passage of the first flow section 20 and the air flowing through the flow passage of the second flow section 30 with high efficiency due to the insulating effect.

[0075] [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.

[0076] 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. 15, air from inside the room is taken in through inlet 321B of second circulating section 30B by blower 12B, passes through the flow path of second circulating section 30B, and is discharged outside the room through outlet 331B. At this time, the air in the room passes through gaps between the multiple fins 422B of the second portion 42B of the heat exchange body 40B, cools the heat exchange body 40B, and is discharged to the outside.

[0077] On the other hand, as shown in FIG. 14, 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. At this time, the outdoor air passes through gaps between the multiple fins 412B of the first portion 41B of the heat exchange body 40B, is cooled by the heat exchange body 40B that is already in a cooled state, and is discharged into the room.

[0078] The ventilation device 100B cools the outdoor air to perform ventilation even when the air conditioner is in cooling mode, so that ventilation can be performed while suppressing an increase in the indoor 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.

[0079] [Technical effect of ventilation system] In this way, the ventilation device 100B is equipped with a heat exchange body 40B that performs heat exchange between the air flowing through the flow path of the first flow section 20B and the air flowing through the flow path of the second flow section 30B, and therefore can perform ventilation while performing heat exchange between the air inside the room and the air outside the room. 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.

[0080] Also, in the case of the ventilation device 100B, the heat exchange body 40B is disposed so as to penetrate the partition wall 13B of the flow path of the first flow section 20B and the flow path of the second flow section 30B, so that heat exchange can be performed with high efficiency. In addition, since the heat exchange body 40B is surrounded by insulation materials 44B and 45B at all sides except the ends in the air flow direction, heat dissipation and absorption to anything other than the circulating air is suppressed, making it possible to perform heat exchange between the outdoor air and the indoor air with high efficiency.

[0081] Furthermore, as shown in Figures 14, 15 and 16, in the ventilation device 100B, the flow path of the first circulation section 20B and the flow path of the second circulation section 30B are arranged adjacent to each other via a partition 13B and are parallel to each other, and the outdoor air inlet 231B of the first circulation section 20B and the outdoor air outlet 331B of the second circulation section 30B are arranged at one end and the other end in the left-right direction. Therefore, during ventilation, it is possible to prevent indoor air discharged from exhaust port 331B from being directly taken in from intake port 231B, thereby making it possible to effectively exchange indoor air with outdoor air.

[0082] 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. Moreover, by disposing the ventilation device 100B inside the frame body 1100B of the opening device 1000B, the installation work for the ventilation device 100B can be easily carried out. Furthermore, 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 air between the outdoors and the indoors.

[0083] Similarly to the ventilation register 100, the ventilation device 100B may also be configured so that the blower 11B or 12B is provided only in the first flow section 20B or the second flow section 30B. Also in the case of the ventilation device 100B, a Peltier element that absorbs and releases heat by thermoelectric conversion may be disposed between the substrate portion 411B of the first portion 41B and the substrate portion 421B of the second portion 42B of the heat exchange body 40B.

[0084] [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. 19 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] [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 without heat exchange in the ventilation register 100 or the ventilation device 100B. For this reason, the ventilation register 100 and the ventilation device 100B used in the ventilation system 2000C may be configured to include the heat exchange avoidance mechanism 46C or 46D. These will be described with reference to the drawings.

[0096] 20 and 21 are cross-sectional views along the front-rear and up-down directions of a configuration in which the heat exchange avoidance mechanism 46C is mounted in the ventilation register 100. Fig. 20 shows a state in which heat exchange is possible, and Fig. 21 shows a state in which heat exchange is avoided. The heat exchange avoidance mechanism 46C is a direct acting actuator such as a solenoid, and a movable core is connected to the second portion 42 of the heat exchange body 40. By driving the heat exchange avoidance mechanism 46C, the first portion 41 is separated from the second portion 42 and is structured to move away from the main pipe 21 (e.g., upward). For this reason, the main pipe 21 has an opening formed therein so that the first portion 41 can be retreated to the outside. On the other hand, the first portion 41 is provided with a lid that closes the opening of the main pipe 21 in a heat exchangeable state. Furthermore, when the heat exchange avoidance mechanism 46C is mounted on the ventilation register 100, a retraction area B1 for retracting the first portion 41 is formed in the through hole B of the wall W. Furthermore, the main body of the heat exchange avoidance mechanism 46C is embedded within the wall W and fixedly supported therein.

[0097] When ventilating in a state in which heat exchange is possible, the ventilation register 100 equipped with the heat exchange avoidance mechanism 46C holds the first portion 41 in a position in which it abuts the second portion 42, as shown in FIG. Therefore, the indoor air flowing through the second flow section 30 passes through the gaps between the fins 422 of the second section 42 in the main duct 31, and cools the heat exchange body 40. As a result, the outdoor air flowing through the first flow section 20 is cooled by the heat exchange body 40 and then led into the room.

[0098] On the other hand, when ventilation is performed in a heat exchange avoiding state, the heat exchange avoiding mechanism 46C separates the first portion 41 from the second portion 42 and moves them to the evacuation area B1 outside the main pipe 31, as shown in FIG. As a result, the outdoor air flowing through the first flow section 20 passes through an empty flow path in the main pipe 21 where the first section 41 has been removed, and is not cooled by the heat exchange body 40. As a result, the outdoor air flowing through the first flow section 20 is led into the room at its original temperature without being cooled by the heat exchange body 40.

[0099] The heat exchange avoidance mechanism 46C may be configured such that the second portion 42, rather than the first portion 41, is separated from the first portion 41 and retreats to the outside of the main pipe 31. In addition, the ventilation register 100 incorporated in the ventilation system 2000C may be configured to have only one of the fans 11 and 12.

[0100] It is also possible to incorporate the ventilation register 100A, in which the Peltier element 43A is disposed between the first section 41 and the second section 42, into the ventilation system 2000C. In this case, it is not necessary to mount the heat exchange avoidance mechanism 46C on the ventilation register 100A. This is because when ventilation is performed in a heat exchange avoidance state, it is sufficient to turn off the power supply to the Peltier element 43A.

[0101] [Configuration of ventilation equipment suitable for ventilation system] Fig. 22 shows a cross-sectional view of the ventilation device 100B equipped with a heat exchange avoidance mechanism 46D along line GG in Fig. 13, and Fig. 23 shows a cross-sectional view of the ventilation device 100B along line HH in Fig. 13. Note that Fig. 22 shows the right half of the ventilation device 100B, and Fig. 23 shows the left half. The heat exchange avoidance mechanism 46D has a first shutter mechanism 461D provided between the blower 11B and the first portion 41B of the heat exchange body 40B in the first circulation section 20 as shown in FIG. 22, and a second shutter mechanism 462D provided between the blower 12B and the second portion 42B of the heat exchange body 40B in the second circulation section 30B as shown in FIG. 23.

[0102] As shown in FIG. 22, a heat exchange avoidance outlet 221D that opens toward the rear (indoor side) is formed in the pipe between the fan 11B and the first portion 41B in the first flow section 20B. The first shutter mechanism 461D has a rotating shutter plate and an actuator (not shown) that rotates the shutter plate. The shutter plate of the first shutter mechanism 461D can be switched by rotation between a state in which the exhaust port 221D for avoiding heat exchange is closed (shown by a two-dot chain line) and a state in which the first flow section 20 is closed between the first part 41 and the exhaust port 221D for avoiding heat exchange (shown by a solid line).

[0103] As shown in FIG. 23, the duct between the fan 12B and the second portion 42B in the second flow section 30B is provided with an intake port 321D for avoiding heat exchange, which opens toward the rear (indoor side). The second shutter mechanism 462D has a rotating shutter plate and an actuator (not shown) that rotates the shutter plate. The shutter plate of the second shutter mechanism 462D can be switched by rotation between a state in which the heat exchange avoidance inlet 321D is closed (shown by a two-dot chain line) and a state in which the second flow section 30 is closed between the second part 42 and the heat exchange avoidance inlet 321D (shown by a solid line).

[0104] In the ventilation device 100B equipped with the heat exchange avoidance mechanism 46D, when ventilation is performed in a state in which heat exchange is possible, the first shutter mechanism 461D closes the exhaust port 221D for avoiding heat exchange, and the second shutter mechanism 462D closes the intake port 321D for avoiding heat exchange. Therefore, the indoor air flowing through the second flow portion 30B and the outdoor air flowing through the first flow portion 20B exchange heat in the heat exchange body 40B.

[0105] On the other hand, when ventilation is performed in a heat exchange avoiding state, the first shutter mechanism 461D closes the first flow section 20, and the second shutter mechanism 462D closes the second flow section 30B. As a result, the outdoor air flowing through the first flow portion 20B is discharged directly into the room from the exhaust port 221D without passing through the heat exchange body 40B. Furthermore, the air inside the room that flows through the second flow section 30B is taken in directly from the room through the inlet 321D without passing through the heat exchange body 40B.

[0106] The ventilation device 100B incorporated in the ventilation system 2000C may have only one of the fans 11B and 12B. Moreover, when the ventilation device 100B is configured to place a Peltier element between the first portion 41B and the second portion 42B, it is not necessary to mount the heat exchange avoidance mechanism 46D. When ventilating in a heat exchange avoidance state, it is sufficient to turn off the power supply to the Peltier element, as in the case of the ventilation register 100A.

[0107] 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. 24, 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 heat exchange avoidance mechanism 46C (or 46D) based on the received commands.

[0108] 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.

[0109] [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. 25 and the flowchart of Fig. 26. The flowchart of Fig. 26 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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 heat exchange avoidance mechanism 46C or 46D to switch to the heat exchange avoidance state (step S9). Then, the CPU transmits a ventilation start command to the ventilation register 100 or the ventilation device 100B (step S11). This allows the outside air to be taken into the room without heat exchange, lowering the room temperature.

[0114] 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.

[0115] 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.

[0116] [CO2 concentration adjustment control] The CO2 concentration adjustment control in the ventilation system 2000C will be described based on the conceptual diagram of Fig. 27 and the flowchart of Fig. 28. The flowchart of Fig. 28 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.

[0117] 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.

[0118] On the other hand, if there is a command to execute the CO2 concentration adjustment control or if a person is 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.

[0119] 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 a heat exchangeable state.

[0120] 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.

[0121] 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.

[0122] [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.

[0123] 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.

[0124] 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, 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.

[0125] [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.

[0126] 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 be one that does not have the heat exchange avoidance mechanisms 46C and 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.

[0127] 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 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]

[0128] 11,11B,12,12B Blower 13B Bulkhead 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 40, 40A, 40B Heat exchanger 41,41B First part 42,42B Second part 43A Peltier element 44B, 45B Insulation material 46C,46D Heat exchange avoidance mechanism 51C Control device (ventilation control device) 52C Communication equipment (wireless communication equipment) 100,100A Ventilation Register (Ventilation Equipment) 100B Ventilation equipment 111B spout 121B spout 221,221B,221D,331B Outlet 231, 231B, 321, 321B, 321D intake port 411,411B,421,421B Board part 412,422,412B,422B Fins 461D First Shutter Mechanism 462D Second Shutter Mechanism 1000B opening device 1001B Eyeless 1002B Glass Panel 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 B1 Evacuation Area 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 section that configures a flow path for flowing air from indoors to outdoors; a blower provided in at least one of the first circulating portion and the second circulating portion to circulate air in a predetermined direction; a heat exchanger that performs heat exchange between air flowing through a flow path of the first circulation portion and air flowing through a flow path of the second circulation portion; A ventilation device comprising:

2. the flow path of the first circulation portion and the flow path of the second circulation portion are arranged so that at least a part of the flow path is adjacent to each other via a partition wall, The ventilation device according to claim 1 , wherein the heat exchange body is disposed so as to penetrate the partition wall.

3. The ventilation device according to claim 1 , wherein the heat exchange body includes an element that absorbs and releases heat by means of electric power.

4. the flow path of the first circulation portion and the flow path of the second circulation portion are arranged adjacent to each other via a partition wall and are parallel to each other, The ventilation device according to claim 1, characterized in that the outdoor air intake port of the first circulation section and the outdoor air exhaust port of the second circulation section are arranged at one end and the other end in a direction along the flow path.

5. The ventilation device described in claim 1, characterized in that a heat exchange avoidance mechanism is provided for at least one of the flow paths of the first circulation section and the second circulation section, which switches between a state in which air passes through the heat exchange body and a state in which air does not pass through the heat exchange body.

6. The heat exchange element is separable into a first portion exposed to air flowing through a flow path of the first circulation portion and a second portion exposed to air flowing through a flow path of the second circulation portion, The ventilation device according to claim 5 , wherein the heat exchange avoidance mechanism separates at least one of the first portion and the second portion of the heat exchange body from the other and moves it to outside the flow path.

7. an exhaust port for avoiding heat exchange is provided between an intake port for taking in air from the outdoors of the first circulation portion and the heat exchange body; an intake port for avoiding heat exchange is provided between the heat exchange body and an exhaust port for exhausting air to the outside of the second circulation part; The heat exchange avoidance mechanism includes: a first shutter mechanism switchable between a state in which the exhaust port for avoiding heat exchange is closed and a state in which a first flow section is closed between the heat exchange body and the exhaust port for avoiding heat exchange; The ventilation device according to claim 5, further comprising a second shutter mechanism that can be switched between a state in which the inlet for avoiding heat exchange is blocked and a state in which the second flow section is blocked between the heat exchange body and the inlet for avoiding heat exchange.

8. 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.

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

10. An opening device provided at an opening in a structure of a building, An opening device comprising the ventilation device according to any one of claims 1 to 9, which is provided inside a frame body attached to the opening.

11. A ventilation register equipped with a ventilation device described in any one of claims 1 to 9, 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.

12. A ventilation device according to claim 9; 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 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 without performing heat exchange.

13. A command input device is provided for a person to input a command, The ventilation system according to claim 12, characterized in that the control device stops the air conditioning device and operates the ventilation device without performing heat exchange in response to the temperature difference and an execution command from the command input device.

14. a human presence detection device for detecting a human being inside the building; The ventilation system described in claim 12, characterized in that the control device stops the air conditioning device and operates the ventilation device without performing heat exchange depending on the temperature difference and the presence or absence of a human being in the room detected by the human detection device.

15. A ventilation device according to claim 8 or claim 9; 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.

16. A command input device is provided for a person to input a command, The ventilation system according to claim 15, 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.

17. Equipped with a human presence detection device that detects people in the room, The ventilation system according to claim 15, 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.

18. A ventilation device according to claim 9; 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: A method for controlling a ventilation system, comprising: determining the temperature difference between the outside and inside of a room using the external temperature detection device and the internal temperature detection device; and, depending on the temperature difference, stopping the air conditioning device and operating the ventilation device without performing heat exchange.

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, 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 without performing heat exchange.

20. The ventilation system includes a human presence detection device that detects a human being inside the building, The control method for a ventilation system according to claim 18, characterized in that, depending on the temperature difference and the presence or absence of a human being in the room detected by the human presence detection device, the air conditioning device is stopped and the ventilation device is operated without performing heat exchange.

21. A ventilation device according to claim 8 or claim 9; 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.

22. 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 21, 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.

23. 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 21, 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