JP2023092551A - indoor ventilation system - Google Patents

Abstract

To provide an indoor ventilation system that can improve the work efficiency of maintenance through an inspection hatch.SOLUTION: An indoor ventilation system 10 in one aspect includes: a heat exchange unit 2 for exchanging heat between outdoor air taken in from outdoors and indoor air taken in from indoors; a supply-air sending unit 3 that sends the outdoor air from the heat exchange unit 2 to indoors; and an exhaust-air sending unit 4 that sends the indoor air from the heat exchange unit 2 to outdoors. The heat exchange unit 2, the supply-air sending unit 3, and the exhaust-air sending unit 4 are formed in sizes that allow them to be put in and out through an inspection hatch 90, and are independently disposed around the inspection hatch 90. The heat exchange unit 2, the supply-air sending unit 3, and the exhaust-air sending unit 4 respectively have, on their sides facing the inspection hatch 90, maintenance openings 22, 32, 42 through which predetermined maintenance target elements 24, 34, 44 can be passed.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to indoor ventilation systems.

BACKGROUND ART A ventilator fixed to an attic or an underfloor of a house is known. For example, Patent Literature 1 discloses a heat exchange unit, a first blower unit having a first blower, a second blower unit having a second blower, and a first duct and a second duct that can change their direction. and a control unit for controlling the first fan and the second fan. In this device, the heat exchange unit, the first blower unit, the second blower unit, and the control unit are formed in a size that can be taken out from an inspection opening provided on the inner wall surface of the ceiling, floor, etc., and are fixed to the structure of the house. be done.

JP 2014-095541 A

The inventors of the present application have obtained the following new recognition regarding indoor ventilation systems. For example, maintenance or repair (hereinafter referred to as "maintenance") may be performed at a predetermined timing for a ventilation device installed in the attic or under the floor of a house.

In the ventilation device described in Patent Document 1, the heat exchange unit, the first blower unit, the second blower unit, and the control unit are formed in sizes that can be removed from the inspection opening in order to facilitate construction. However, with this device, when performing maintenance on each unit, the target unit is taken out from the inspection opening, which increases the number of man-hours. That is, this device has room for improvement from the viewpoint of improving the workability of maintenance through the inspection port.

The present disclosure has been made to solve the above problems, and an object thereof is to provide an indoor ventilation system capable of improving workability of maintenance through an inspection door.

In order to solve the above problems, an indoor ventilation system according to one aspect of the present invention includes a heat exchange section for exchanging heat between outdoor air taken in from the outdoors and indoor air taken in from the inside, and a heat exchange section. A supply air blowing section for blowing outdoor air from the heat exchange section to the indoors, and an exhaust air blowing section for blowing the indoor air from the heat exchange section to the outdoors. The heat exchange section, the supply air blowing section, and the exhaust air blowing section are formed in a size that can be taken in and out of the inspection opening, and are independently arranged around the inspection opening. Each has, on the access door side, a service opening through which a given serviceable element can pass.

In addition, what converts the expression of this disclosure between methods, apparatuses, systems, recording media, computer programs, etc. is also effective as an aspect of this disclosure.

Advantageous Effects of Invention According to the present disclosure, it is possible to provide an indoor ventilation system capable of improving workability of maintenance through an inspection door.

FIG. 1 is a plan view schematically showing an indoor ventilation system according to an embodiment. FIG. 2 is a side view of the heat exchange section viewed from the inspection port side. FIG. 3 is a side view of the air supply blower viewed from the inspection port side. FIG. 4 is a side view of the exhaust blower viewed from the inspection door side. FIG. 5 is a side view of the humidity control unit viewed from the inspection door side.

Hereinafter, embodiments for implementing the present disclosure will be described with reference to the accompanying drawings. In the embodiments and modified examples, the same or equivalent constituent elements and members are denoted by the same reference numerals, and duplication of description will be omitted as appropriate. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Also, in each drawing, some of the members that are not important for explaining the embodiments are omitted.

Also, terms including ordinal numbers such as first, second, etc. are used to describe various components, but these terms are used only for the purpose of distinguishing one component from other components, and the terms The constituent elements are not limited by

An indoor ventilation system 10 according to an embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 is a plan view schematically showing an indoor ventilation system 10. FIG. The indoor ventilation system 10 is fixed at a predetermined location of the building. FIG. 1 shows an example in which the indoor ventilation system 10 is installed above the ceiling 84 in the ceiling of the building 70 . The indoor ventilation system 10 supplies the outdoor air OA taken in from the outdoors to a room 81 such as an indoor living room, exhausts the indoor air RA taken in from the room 81 to the outdoors, and separates the outdoor air OA and the indoor air RA. It is a ventilation system that exchanges heat between

The indoor ventilation system 10 includes a heat exchange section 2 , an air supply blower section 3 , an exhaust air blower section 4 , a humidity adjustment section 5 and a control circuit unit 6 . The heat exchange section 2, the supply air blower section 3, the exhaust air blower section 4, and the humidity adjustment section 5 are collectively referred to as constituent units. Each component unit is formed in a size that can be put in and taken out from the inspection opening 90 and is arranged independently around the inspection opening 90 so as to surround the inspection opening 90 . The inspection opening 90 is a rectangular opening in plan view, and has a size that allows maintenance personnel to enter the head and upper limbs of the ceiling, for example. The heat exchange section 2 is arranged to face the humidity adjustment section 5 with the inspection opening 90 interposed therebetween, and the supply air blowing section 3 is arranged to face the exhaust air blowing section 4 with the inspection opening 90 interposed therebetween. When the inspection opening 90 is rectangular, each structural unit is arranged in each of the four areas defined by the diagonal extension lines La and Lb of the inspection opening 90 .

The heat exchange section 2 exchanges heat between the outdoor air OA taken in from the outdoors and the indoor air RA taken in from inside. The air supply blower 3 blows the outdoor air OA from the heat exchange unit 2 to the room 81 . The exhaust air blower 4 blows the indoor air RA from the heat exchange unit 2 to the outdoors. The humidity adjustment unit 5 humidifies or dehumidifies the outdoor air OA supplied from the air supply blower 3 to the room 81 to adjust the humidity. Humidity adjustment unit 5 can employ known humidifying means or dehumidifying means. The humidity control unit 5 of this example includes a centrifugal crushing disk 55, a drive motor 56 for driving the centrifugal crushing disk 55, and a water tank 57, and humidifies the outdoor air OA based on the principle of the centrifugal crushing method. Humidity adjustment unit 5 has a temperature/humidity sensor 53 that detects the temperature or humidity of the air passing through it.

The control circuit unit 6 receives an operation signal corresponding to an operation from a remote controller 68 that accepts user's operation. The control circuit unit 6 controls the operation of each constituent unit based on the operation signal from the remote controller 68 .

The heat exchange section 2 has a heat exchange element 25 that exchanges heat between a first air passage 27 communicating from the OA port to the SA port and a second air passage 28 communicating from the RA port to the EA port. The heat exchange section 2 has a temperature/humidity sensor 23 that detects the temperature or humidity of the air passing through the first air passage 27 or the second air passage 28 . The OA port communicates with an outdoor air intake 78 via a duct 71 . The SA port communicates with the suction port 38 of the air supply blower 3 via a duct 72 . The air outlet 39 of the air supply blower 3 communicates with the suction port 58 of the humidity adjuster 5 via the duct 73 . The air outlet 59 of the humidity control unit 5 communicates with the air supply port 82 of the room 81 via the duct 74 .

The air supply blower 3 has a blower fan 35 and a fan motor 36 that drives the blower fan 35 to rotate. The air supply blower 3 has a temperature/humidity sensor 33 that detects the temperature or humidity of the air passing through it. When the blower fan 35 is rotated by the fan motor 36 , the outdoor air OA taken in from the outdoor air intake passes through the duct 71 , the OA port, the first air passage 27 , the SA port and the duct 72 to the supply air blower 3 . sucked in. The outdoor air OA sucked into the air supply blower 3 passes through the duct 73 , the humidity control unit 5 and the duct 74 and is supplied into the room 81 from the air supply port 82 .

The RA port of the heat exchange section 2 communicates with the intake port 83 of the room 81 via the duct 75 . The EA port of the heat exchange section 2 communicates with the suction port 48 of the exhaust air blowing section 4 via a duct 76 . The outlet 49 of the exhaust blower 4 communicates with an outdoor outlet 79 via a duct 77 .

The exhaust blower 4 has a blower fan 45 and a fan motor 46 that drives the blower fan 45 to rotate. The exhaust air blower 4 has a temperature/humidity sensor 43 that detects the temperature or humidity of the air passing through it. When the blower fan 45 is rotated by the fan motor 46 , the indoor air RA taken in from the air intake 83 of the room 81 passes through the duct 75 , the RA port, the second air passage 28 , the EA port and the duct 76 to the exhaust air blower 4 . sucked into The indoor air RA sucked into the exhaust air blower 4 passes through the duct 77 and is exhausted to the outside from the exhaust port 79 .

One or more of the heat exchange section 2, the supply air blower section 3, the exhaust air blower section 4, and the humidity adjustment section 5 detect one or more of the temperature and humidity sensors 23, 33, 43, and 53. Actions may be controlled according to the results.

2, 3, 4 and 5, service openings 22, 32, 42, 52 are described. FIG. 2 is a side view of the heat exchange section 2 viewed from the inspection port 90 side. FIG. 3 is a side view of the air supply blower 3 viewed from the inspection port 90 side. 3, the controller box 62 fixed to the inspection opening 90 side of the air supply blower 3 is shown above the air supply blower 3 for convenience. FIG. 4 is a side view of the exhaust air blower 4 viewed from the inspection port 90 side. FIG. 5 is a side view of the humidity control unit 5 viewed from the inspection port 90 side. These figures show the state in which the lid R is removed. It is conceivable to remove the component unit from the inspection port 90 in order to maintain the main parts of the component unit. In this case, a large number of man-hours are required to separate the ducts, wiring, fixing parts of the main body, and the like.

Therefore, in this embodiment, the heat exchange section 2 has a maintenance opening 22 on the side surface on the side of the inspection port 90 through which a predetermined maintenance target element 24 can pass. In addition, the air supply blower 3 has a maintenance opening 32 on a side surface on the inspection opening 90 side, through which a predetermined maintenance target element 34 can pass. Further, the exhaust air blower 4 has a maintenance opening 42 on a side surface on the side of the inspection opening 90 through which a predetermined maintenance target element 44 can pass. In addition, the humidity adjusting section 5 has a maintenance opening 52 through which a predetermined maintenance target element 54 can pass through on the side surface on the inspection opening 90 side. In these cases, the component to be serviced can be removed and serviced through the service opening.

Service opening 22, service opening 32, service opening 42, and service opening 52 are collectively referred to as service openings. The maintenance opening is an opening through which the inside can be exposed within a predetermined range during maintenance of the constituent unit. The shape of the maintenance opening is not limited as long as the element to be serviced can pass through, but is rectangular in this embodiment. The service opening is normally covered by a lid R. The lid R is easily detachably attached to the component unit body by screwing or the like. The lid R in this example has a rectangular shape.

From the viewpoint of reducing work man-hours, it is desirable that each maintenance opening be arranged around the inspection opening 90 . Therefore, in the present embodiment, as shown in FIG. 1, in the indoor ventilation system 10, the maintenance opening 32 of the supply air blower 3 and the maintenance opening 42 of the exhaust air blower 4 have an inspection opening 90 therebetween. arranged opposite to each other. Further, the maintenance opening 22 of the heat exchange section 2 is arranged to face the maintenance opening 52 of the humidity control section 5 with the inspection opening 90 interposed therebetween. In these cases, maintainability can be improved.

The servicing target element 24, the servicing target element 34, the servicing target element 44, and the servicing target element 54 are collectively referred to as a servicing target element. The maintenance target element is a main part of the built-in elements of the component unit that can be removed from the component unit main body for maintenance such as maintenance, repair, and replacement. If the service target element is out of order, it can be replaced with a replacement service target element through the service opening, thereby reducing on-site work time.

An example of maintenance target elements will be described. The air supply blower 3 includes, as maintenance target elements 34 that can pass through the maintenance opening 32, a blower fan 35, a fan motor 36 that drives the blower fan 35, and a temperature/humidity sensor that detects the temperature or humidity of the air. 33. In other words, the maintenance opening 32 has a size and shape that allow the blower fan 35, the fan motor 36, or the temperature/humidity sensor 33 to pass through. The exhaust air blower 4 includes, as maintenance target elements 44 that can pass through the maintenance opening 42, a blower fan 45, a fan motor 46 that drives the blower fan 45, and a temperature/humidity sensor that detects the temperature or humidity of the air. It has a sensor 43 . In other words, the maintenance opening 42 has a size and shape that allow the blower fan 45, the fan motor 46, or the temperature/humidity sensor 43 to pass through.

The heat exchange section 2 also has a heat exchange element 25 and a temperature/humidity sensor 23 that detects the temperature or humidity of the air as the maintenance target element 24 that can pass through the maintenance opening 22 . In other words, the maintenance opening 22 has a size and shape that allow the heat exchange element 25 or the temperature/humidity sensor 23 to pass therethrough. Humidity adjustment unit 5 includes centrifugal crushing disk 55, drive motor 56 for driving centrifugal crushing disk 55, water tank 57, and air temperature Alternatively, it has a temperature/humidity sensor 53 that detects humidity. In other words, the maintenance opening 52 has a size and shape that allow the centrifugal crushing disk 55, the drive motor 56, the water tank 57, or the temperature/humidity sensor 53 to pass through.

Although it is conceivable to provide a control circuit unit for each structural unit, in this case, extra material and manufacturing costs are required, which is disadvantageous in terms of cost. Therefore, in this embodiment, one control circuit unit is configured to control the operations of a plurality of configuration units. In particular, in the example of FIG. 1 , the control circuit unit 6 controls the operations of the heat exchange section 2 , the supply air blower section 3 , the exhaust air blower section 4 and the humidity adjustment section 5 . In this case, it is advantageous in terms of manufacturing cost.

From the viewpoint of improving maintainability of the control circuit unit 6, the control circuit unit 6 is desirably arranged so as to be visible from the inspection opening 90. FIG. Therefore, in this embodiment, the control circuit unit 6 is arranged on the inspection opening 90 side of any one of the heat exchange section 2 , the supply air blower section 3 , the exhaust air blower section 4 and the humidity adjustment section 5 . In the example of FIG. 1 , the control circuit unit 6 is arranged in a controller box 62 fixed on the inspection opening 90 side of the air supply blower 3 . The control circuit unit 6 can be separated from other elements by disconnecting a wiring connector (not shown). When the control circuit unit 6 is out of order, it can be separated from the air supply blower 3 and replaced with a replacement control circuit unit through the inspection port 90, thereby shortening the work time on site.

According to the indoor ventilation system 10 of this embodiment, the maintenance target element can be replaced with a replacement maintenance target element through the maintenance opening. As a result, the work becomes easier than taking out the component unit main body from the inspection opening 90, and the work time at the site for maintenance through the inspection opening 90 can be shortened.

A summary of one aspect of the present disclosure is as follows. An indoor ventilation system (10) according to an aspect of the present disclosure includes a heat exchange section (2) for exchanging heat between outdoor air taken from the outdoors and indoor air taken from the inside, and a heat exchange section (2) It comprises a supply air blower (3) for blowing outdoor air from inside the room, and an exhaust air blower (4) for blowing indoor air from the heat exchange part (2) to the outside. The heat exchanging part (2), the air supply blowing part (3) and the exhaust air blowing part (4) are formed in sizes that can be taken in and out through the inspection opening (90), and can be independently installed around the inspection opening (90). placed. Each of the heat exchange section (2), the supply air blower section (3), and the exhaust air blower section (4) can allow predetermined maintenance target elements (24, 34, 44) to pass through the inspection opening (90) side. It has service openings (22, 32, 42).

In the indoor ventilation system (10), the maintenance opening (32) of the supply air blower (3) faces the maintenance opening (42) of the exhaust air blower (4) across the inspection opening (90). are placed.

The indoor ventilation system (10) has a service opening (52) and further comprises a humidity control section (5) for adjusting the humidity of the outdoor air supplied indoors from the supply air blower (3). The humidity control section (5) is arranged such that the maintenance opening 22 of the heat exchange section (2) faces the humidity control section (5) across the inspection port (90).

In the indoor ventilation system (10), the supply air blower (3) and the exhaust air blower (4) serve as serviceable elements (34, 44) that can pass through service openings (32, 42) of each air blower. , blower fans (35, 45) and fan motors (36, 46) for driving the blower fans (35, 45).

In the indoor ventilation system (10), the heat exchange section (2) has a heat exchange element (25) as a serviceable element (24) that can pass through a service opening 22 of the heat exchange section (2).

The indoor ventilation system (10) further comprises a humidity adjustment section (5) having a service opening 52 and adjusting the humidity of the outdoor air supplied indoors from the supply air blower (3). A humidity control unit (5) drives a centrifugal crushing disc (55) and the centrifugal crushing disc (55) as a maintenance target element (54) that can pass through a maintenance opening (52) of the humidity control unit. It has a drive motor (56).

The indoor ventilation system (10) comprises a control circuit unit (6) for controlling the operation of the heat exchange section (2), the supply air blower section (3) and the exhaust air blower section (4). The control circuit unit (6) is arranged on the inspection port (90) side of any one of the heat exchange section (2), the supply air blower section (3) and the exhaust air blower section (4).

The present disclosure has been described above based on the examples. It should be understood by those skilled in the art that this embodiment is an example, and that various modifications are possible in the combination of each component or each treatment process, and such modifications are within the scope of the present disclosure. .

[Modification]
Modifications will be described below. In the drawings and description of the modified example, the same reference numerals are given to the same or equivalent components and members as those of the embodiment. Descriptions that overlap with the embodiment will be omitted as appropriate, and the configuration that is different from the first embodiment will be mainly described.

In the description of the embodiment, an example in which the indoor ventilation system 10 includes the humidity adjuster 5 is shown, but including the humidity adjuster 5 is not essential, and the indoor ventilation system 10 may not include the humidity adjuster 5. .

In the description of the embodiment, the humidity adjusting section 5 has shown an example in which it includes humidifying means, but the humidity adjusting section 5 may include dehumidifying means. As this dehumidification means, there is a dehumidification means that utilizes the principle of a heat pump.

In the description of the embodiment, an example in which the indoor ventilation system 10 is installed above the ceiling has been shown, but the indoor ventilation system 10 can be installed at locations other than above the ceiling, such as under the floor, inside a wall, or between walls.

A diagnostic terminal capable of outputting monitor information regarding the element to be serviced can be installed in the heat exchanging section 2, the supply air blowing section 3, the exhaust air blowing section 4, or the humidity adjusting section 5 within a visible range from the maintenance opening. The monitor information includes temperature/humidity history, rotation history, vibration history, operating time history information, and deterioration state information of the maintenance target element. By connecting a predetermined tester to the diagnostic terminal, the operator can easily grasp the history information and deterioration state of the maintenance target element.

Any combination of the above constituent elements is also effective as an aspect of the technical concept that abstracts the embodiments and modifications. For example, an embodiment may be combined with any description matter of another embodiment, or a modification may be combined with any description matter of an embodiment and another modification.

The embodiments and modifications have been described above. In understanding the technical ideas abstracted from the embodiments and modifications, the technical ideas should not be construed to be limited to the contents of the embodiments and modifications. The above-described embodiments and modifications are merely specific examples, and many design changes such as alterations, additions, and deletions of constituent elements are possible. In the embodiment, the description of "embodiment" is added to emphasize the content that allows such design changes. However, design changes are permitted even if there is no such notation.

The indoor ventilation system according to the present disclosure can be used for indoor ventilation.

2 heat exchange section 3 supply air blower section 4 exhaust air blower section 5 humidity adjustment section 6 control circuit unit 10 indoor ventilation system 22, 32, 42, 52 maintenance opening 24, 34, 44, 54 Elements to be serviced 25 heat exchange element 35, 45 blower fan 36, 46 fan motor 55 centrifugal crushing disc 56 drive motor 90 inspection opening.

Claims (7)

a heat exchange section for exchanging heat between outdoor air taken in from the outdoors and indoor air taken in from inside;
an air supply blower that blows the outdoor air indoors from the heat exchange unit;
an exhaust air blowing unit that blows the indoor air from the heat exchange unit to the outdoors,
The heat exchange unit, the supply air blowing unit, and the exhaust air blowing unit are formed in sizes that can be taken in and out through an inspection opening, and are arranged independently around the inspection opening,
Each of the heat exchange section, the supply air blower section, and the exhaust air blower section has a maintenance opening on the side of the inspection opening through which a predetermined maintenance target element can pass,
indoor ventilation system. 2. The indoor ventilation system according to claim 1, wherein the maintenance opening of the supply air blower is arranged to face the maintenance opening of the exhaust air blower across the inspection opening. further comprising a humidity adjustment unit that has a maintenance opening and adjusts the humidity of the outdoor air that is supplied indoors from the air supply blower;
3. The indoor ventilation system according to claim 1, wherein the maintenance opening of the heat exchange section is arranged to face the maintenance opening of the humidity control section with the inspection opening interposed therebetween. 4. The supply air blower and the exhaust air blower according to any one of claims 1 to 3, each of which includes a blower fan and a fan motor for driving the blower fan as maintenance target elements capable of passing through maintenance openings of the respective air blowers. or the indoor ventilation system according to item 1. 5. The indoor ventilation system according to any one of claims 1 to 4, wherein the heat exchange section has a heat exchange element as a serviceable element that can pass through the maintenance opening of the heat exchange section. further comprising a humidity adjustment unit that has a maintenance opening and adjusts the humidity of the outdoor air that is supplied indoors from the air supply blower;
6. The humidity adjusting unit according to any one of claims 1 to 5, wherein the humidity adjusting unit has a centrifugal crushing disk and a driving motor for driving the centrifugal crushing disk as the maintenance target element capable of passing through the maintenance opening of the humidity adjusting unit. Indoor ventilation system as described above. a control circuit unit for controlling the operation of the heat exchanging section, the supply air blowing section, and the exhaust air blowing section;
7. The indoor unit according to any one of claims 1 to 6, wherein the control circuit unit is disposed on the inspection opening side of any one of the heat exchange section, the supply air blowing section, and the exhaust air blowing section. ventilation system.

Images