WO2016024581A1

WO2016024581A1 - Ventilation device

Info

Publication number: WO2016024581A1
Application number: PCT/JP2015/072729
Authority: WO
Inventors: 亮一澤村
Original assignee: 株式会社Ｌｉｘｉｌ
Priority date: 2014-08-12
Filing date: 2015-08-11
Publication date: 2016-02-18
Also published as: CN106574796A

Abstract

　A ventilation device, provided with: an air supply path linking an outdoor side air supply port disposed on the outdoor side and an indoor side air supply port disposed on the indoor side; an air supply blower disposed on the air supply path, the air supply blower sending external air to the indoor side; an exhaust path linking an indoor side exhaust port disposed on the indoor side and an outdoor side exhaust port disposed on the outdoor side; an exhaust blower disposed on the exhaust path, the exhaust blower sending the air on the indoor side to the outdoor side; a heat exchanger disposed on the air supply path and the exhaust path, the heat exchanger exchanging heat between supplied air channeled through the air supply path and the exhaust channeled through the exhaust path; an exhaust filter disposed on the side of the exhaust path upstream of the heat exchanger, the exhaust filter capturing dust contained in the exhaust; and a bypass path linking the side of the exhaust path upstream of the exhaust filter and the side of the exhaust path downstream of the heat exchanger.

Description

Ventilation equipment

The present invention relates to a ventilation device.

Conventionally, a ventilation device for improving the indoor environment in a house is provided. In addition, in order to reduce the electric power used by the air conditioner and provide a comfortable living environment, a ventilator equipped with a heat exchanger that performs heat exchange between supply air and exhaust is also known (for example, patents). Reference 1).

By the way, there is a case where a filter for collecting dust is arranged at the inlet of the air supply path or the exhaust path of the ventilation device. When a filter is disposed at the inlet of the air supply path, the collected dust is discharged to the outdoor side (see, for example, Patent Document 2). In particular, in a ventilator equipped with a heat exchanger, in order to maintain the heat exchange performance as long as possible, dust is collected on the upstream side (inlet side) of the heat exchanger in the air supply path and the exhaust path and exhausted. It is preferable to prevent dust from entering the path.

JP 2011-231973 A JP 2012-166182 A

However, in a ventilator equipped with a heat exchanger, even if a filter for collecting dust is disposed at the inlet of the exhaust path, the heat exchanger is disposed downstream of the filter in the exhaust path. It is difficult to discharge the collected dust outdoors. If the collected dust is not discharged outdoors, the heat exchange performance of the ventilator may be degraded.

This invention aims at providing the ventilation apparatus provided with the heat exchanger which can suppress that heat exchange performance falls.

The present invention includes an outdoor air supply port (for example, an outdoor air supply port 21 described later) disposed on the outdoor side and an indoor air supply port (for example, an indoor air supply port 22 described later) disposed indoors. An air supply path (for example, an air supply path 20 described later), an air supply blower (for example, an air supply fan 2 described later) that is disposed in the air supply path and sends outside air to the indoor side, and an indoor side An exhaust path (for example, described later) connecting an indoor side exhaust port (for example, an indoor side exhaust port 31 described later) and an outdoor side exhaust port (for example, described later outdoor side exhaust port 32) disposed on the outdoor side. An exhaust passage 30), an exhaust blower (for example, an exhaust blower 3 to be described later) arranged in the exhaust passage and sending indoor air to the outdoor side, and arranged in the supply passage and the exhaust passage and the supply air Heat exchange between air supply through the air path and exhaust through the exhaust path A heat exchanger (for example, a heat exchanger 5 to be described later) to be performed, and an exhaust filter (for example, an exhaust filter to be described later) that is disposed upstream of the heat exchanger in the exhaust path and collects dust contained in the exhaust gas 42) and a bypass path (for example, bypass path 9 described later) connecting the upstream side of the exhaust path with respect to the exhaust filter and the downstream side of the heat exchanger with respect to the exhaust path. (For example, the ventilation apparatus 1 described later).

Thus, dust collected on the indoor exhaust port side of the exhaust path can be smoothly discharged to the outdoor side through the bypass path without passing through the heat exchanger. Therefore, in the ventilator provided with a heat exchanger, it can suppress that heat exchange performance falls.

Further, it is preferable to further include dust removing means (for example, fins 24a described later) disposed on the surface of the exhaust filter on the indoor exhaust port side to remove dust attached to the exhaust filter.

Further, it is preferable that an inlet of the bypass path (for example, a bypass inlet 91 described later) opens toward the surface of the exhaust filter.

In addition, it further includes switching means (for example, a damper 100 described later) for switching between exhaust through the heat exchanger and exhaust through the bypass path, and the switching means exhausts through the heat exchanger. It is preferable to switch to the exhaust via the bypass path after executing for a predetermined time.

An air supply filter (for example, an air supply filter 41 described later) that is disposed on the outdoor air supply port side of the air supply path and collects dust contained in the outside air flowing into the air supply path; A filter moving device (for example, an air supply filter moving device 8 to be described later) for moving an air supply filter to the outdoor exhaust port side of the exhaust path, and a static voltage applying device (for example, an electric voltage applied to the air supply filter) A static voltage application device 7) described later, and a control unit (for example, a control unit 301 described later) that controls the air supply blower, the exhaust blower, the filter moving device, and the static voltage application device. The control unit moves the air supply filter to the outdoor side exhaust port side of the exhaust path by the filter moving device, and stops the application of the static voltage to the air supply filter by the static voltage application device, Without even by driving the exhaust fan, it is preferable to perform the filter cleaning control for removing dust trapped on the air supply filter.

Further, the filter moving device includes a motor (for example, a motor 81 described later) as a drive source, and the control unit controls the motor to vibrate the air supply filter during the execution of the filter cleaning control. Thus, it is preferable to remove dust collected by the air supply filter.

Moreover, it is preferable that the control unit executes the filter cleaning control every predetermined time.

In addition, an illuminance sensor (for example, an illuminance sensor 302 described later) for detecting ambient illuminance and a dust sensor (for example, a dust sensor 303 described later) for detecting indoor dust are further provided, The exhaust blower is operated according to a control signal from the control unit, the control unit controls the operation of the ventilation device according to outputs of the illuminance sensor and the dust sensor, and the control unit An air supply filter that removes dust from outside air to be supplied and / or a cleaning mode in which the exhaust blower is operated at a high output in order to discharge dust adhering to the exhaust filter, and a dust sensor that is not in the cleaning mode. When the output exceeds a predetermined value, the exhaust air blower and / or the air supply blower is operated at a high output, and the operation mode is less than two of the two operation modes. Both of the two operation modes are configured so as to switch between any one of the operation modes and a silent mode in which the exhaust blower and the supply blower are operated at a low output. It is preferable to prohibit the operation in an operation mode that can be selected by the control unit among the modes.

Moreover, it is preferable that the control unit performs the operation in the silent mode when the illuminance detected by the illuminance sensor is equal to or lower than a predetermined level.

In addition, the control unit controls the rotation speed of the supply air blower and the rotation speed of the exhaust air blower, sets the rotation speed of the supply air blower to a normal rotation speed, and sets the rotation speed of the exhaust air blower to a normal rotation speed. A normal operation mode in which the rotation speed is set, a rotation speed of the air supply blower that is smaller than that in the normal operation mode, an exhaust operation mode in which the rotation speed of the exhaust blower is set to a normal rotation speed, and the supply air According to the air supply operation mode in which the rotation speed of the air blower is set to a normal rotation speed and the rotation speed of the exhaust blower is smaller than that in the normal operation mode, and the outdoor temperature and the indoor temperature, the respective operations It is preferable to include a switching unit that switches modes (for example, a switching unit 318 described later).

A supply air distribution section that constitutes a part of the supply air path and through which the supplied air flows to exchange humidity between the air flowing through the supply air path and the air flowing through the exhaust air path; A humidity exchanger (for example, a humidity exchanger 500 described later) functioning as the heat exchanger, and the humidity in the air supply path. An electrostatic atomizer (e.g., an electrostatic atomizer 600 described later) that is disposed downstream of the air supply and circulation section of the exchanger and discharges electrostatic mist, and the electrostatic atomizer Is an electrostatic mist discharge pin (for example, an electrostatic mist discharge pin to be described later) that adsorbs water vapor in the air whose humidity has been exchanged by the humidity exchanger and discharges an electrostatic mist by applying a negative high voltage from the outside. 601).

According to the present invention, in a ventilator equipped with a heat exchanger, dust collected on the indoor exhaust port side of the exhaust path can be smoothly discharged to the outdoor side without passing through the heat exchanger. Therefore, the ventilation apparatus provided with the heat exchanger which can suppress that heat exchange performance falls can be provided.

It is a figure which shows the use condition of the ventilator which concerns on 1st embodiment of this invention. It is a perspective view of the ventilation apparatus which concerns on 1st embodiment. It is an expanded sectional view showing the circumference of an exhaust filter and a damper in a ventilator concerning a first embodiment. It is an expanded sectional view showing the circumference of an exhaust filter and a damper in a ventilator concerning a first embodiment. It is the bottom view which showed the exhaust filter and the damper in the ventilation apparatus which concerns on 1st embodiment. It is the bottom view which showed the exhaust filter and the damper in the ventilation apparatus which concerns on 1st embodiment. It is a functional block diagram showing the structure of the control part of the ventilation apparatus which concerns on 1st embodiment. It is a schematic diagram shown about the normal operation mode of the ventilation apparatus which concerns on 1st embodiment. It is a schematic diagram shown about the operation | movement in the cleaning mode (exhaust filter cleaning mode) of the ventilation apparatus which concerns on 1st embodiment. It is a schematic diagram shown about the operation | movement in the cleaning mode (air supply filter cleaning mode) of the ventilation apparatus which concerns on 1st embodiment. It is a flowchart for demonstrating operation | movement of the control part of the ventilation apparatus which concerns on 1st embodiment. It is a flowchart showing the detail of the control procedure in the cleaning mode of the ventilation apparatus which concerns on 1st embodiment. It is a perspective view of the air supply filter of the ventilator which concerns on 2nd embodiment of this invention. It is a functional block diagram showing the structure of the control part in the ventilation apparatus of 2nd embodiment. It is a schematic diagram of the operation mode in the ventilation apparatus of 2nd embodiment. It is a schematic diagram of the cleaning mode in the ventilation apparatus of 2nd embodiment. It is a flowchart explaining the use procedure of the ventilator which concerns on 2nd embodiment. It is a functional block diagram showing the structure of the control part of the ventilation apparatus which concerns on 3rd embodiment of this invention. It is a flowchart for demonstrating operation | movement of the control part of the ventilation apparatus which concerns on 3rd embodiment. It is a flowchart showing the detail of the control procedure in the cleaning mode of the ventilation apparatus which concerns on 3rd embodiment. It is a figure showing the operation mode regarding ventilation of the ventilation apparatus which concerns on 3rd embodiment. It is a figure showing the conditions by which the driving | operation in each mode of the ventilation apparatus which concerns on 3rd embodiment is performed. It is a functional block diagram of the control part of the ventilator which concerns on 4th embodiment of this invention. It is a figure which shows an example of the switching of the operation mode of the ventilation apparatus which concerns on 4th embodiment. It is a perspective view of the ventilation apparatus which concerns on 5th embodiment of this invention. It is a figure showing the installation aspect of the electrostatic atomizer in the ventilation apparatus of FIG. It is a figure for demonstrating the structure of the electrostatic atomizer of FIG.

<First Embodiment>
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating a use state of the ventilation device 1 according to the present embodiment. As shown in FIG. 1, a ventilator 1 according to this embodiment is a ductless ventilator that is attached to an upper part of an indoor wall surface, etc., and ventilates air by supplying and exhausting air between outdoors and indoors of a building. is there.
The housing 10 of the ventilator 1 is provided with an indoor air supply port 22 for sending outdoor air from the outdoors to an indoor side and an indoor exhaust port 31 for sending indoor air to the outdoors.

FIG. 2 is a perspective view of the ventilation device 1. As shown in FIG. 2, the ventilator 1 includes a housing 10, an air supply path 20, an air supply blower 2, an exhaust path 30, an exhaust blower 3, a heat exchanger 5, and a bypass path 9. Prepare.
The ventilation device 1 includes an air supply filter 41, an exhaust filter 42, an air supply filter moving device 8, a damper 100, and a control unit (not shown).

The housing 10 is formed in a substantially rectangular parallelepiped shape. The rear surface of the housing 10 is formed flat and abuts against the wall surface of the room. The housing 10 is connected to a pipe 11 that leads from the outside to the inside on one end side of the back surface. The housing 10 accommodates each path and member to be described later.

The air supply path 20 connects an outdoor air supply port 21 disposed on the outdoor side and an indoor air supply port 22 disposed on the indoor side. The outdoor side air supply port 21 is located in the pipe 11, and the indoor side air supply port 22 is located in the upper end portion on the front side of the housing 10.

The exhaust path 30 connects an indoor side exhaust port 31 disposed on the indoor side and an outdoor side exhaust port 32 disposed on the outdoor side. The indoor side exhaust port 31 is located at the lower end portion of the front side of the housing 10, and the outdoor side exhaust port 32 is located in the pipe 11.

Here, the outdoor side air supply port 21 and the outdoor side exhaust port 32 are formed by partitioning the inside of the pipe 11 vertically. That is, the outdoor side air supply port 21 is configured by the lower semicircular portion in the cross-sectional view of the pipe 11 of the circular pipe, and the outdoor side exhaust port 32 is configured by the upper semicircular portion.

The heat exchanger 5 is disposed in the air supply path 20 and the exhaust path 30. The heat exchanger 5 performs heat exchange between the supply air flowing through the supply air path 20 and the exhaust gas flowing through the exhaust path 30. In the heat exchanger 5, a rectangular total heat exchange sheet capable of exchanging total heat (sensible heat and latent heat) is laminated with a plurality of ribs extending in the short direction of the total heat exchange sheet. Thus, it is formed in a rectangular parallelepiped shape. The total heat exchange sheet is made of paper, for example. Inside the heat exchanger 5, the air supply path 20 and the exhaust path 30 are alternately and independently formed in the stacking direction of the total heat exchange sheet via the total heat exchange sheet.

The heat exchanger 5 includes an air supply inlet 51 formed at an upper portion on one end side in the longitudinal direction, an air supply outlet 52 formed at a side surface on the other end side, and an exhaust gas formed at a lower portion on the other end side. It has the inflow port 53 and the exhaust outflow port 54 formed in the side surface of the one end side. The flow path connecting the air supply inlet 51 and the air supply outlet 52 in the heat exchanger 5 constitutes a part of the air supply path 20. Similarly, the flow path connecting the exhaust inlet 53 and the exhaust outlet 54 in the heat exchanger 5 constitutes a part of the exhaust path 30. Thereby, the flow of the supply air in the supply air path 20 and the flow of the exhaust gas in the exhaust path 30 become an opposite flow.

The air supply blower 2 is disposed on the terminal end side of the air supply path 20 and sends outside air to the indoor side. The air supply blower 2 is disposed downstream of the heat exchanger 5 in the air supply path 20. The air supply blower 2 is a centrifugal blower that includes a motor 2a and a multi-blade impeller 2b that is connected to the motor 2a and arranged to face the air supply outlet 52.

The exhaust blower 3 is disposed on the end side of the exhaust path 30 and sends indoor air to the outdoor side. The exhaust blower 3 is disposed downstream of the heat exchanger 5 in the exhaust path 30. The exhaust blower 3 is a centrifugal blower that includes a motor 3 a and a multi-blade impeller 3 b that is connected to the motor 3 a and is opposed to the exhaust outlet 54.

The air supply filter 41 is disposed in the vicinity of the outdoor air supply port 21 upstream of the heat exchanger 5 in the air supply path 20. The air supply filter 41 collects dust contained in the air supply.
The air supply filter 41 is annular and is divided in half by a shaft portion 411 extending in the radial direction. The air supply filter 41 has a net portion 412 arranged on one divided semicircle side. The air supply filter 41 prevents the passage of dust by the mesh part 412.
The air supply filter 41 is disposed across the outdoor side air supply port 21 and the outdoor side exhaust port 32. The air supply filter 41 has a driven gear 43 formed along the outer periphery.

The air supply filter moving device 8 includes a motor 81 and a drive gear 82. The motor 81 is connected to a drive gear 82 that meshes with the driven gear 43. The air supply filter 41 rotates using the motor 81 as a power source. The air supply filter 41 vibrates in conjunction with the drive gear 82 that is vibrated by the motor 81. The air supply filter 41 is controlled by a control unit described later via the air supply filter moving device 8 (motor 81).

The exhaust filter 42 is disposed in the vicinity of the indoor exhaust port 31 on the upstream side of the heat exchanger 5 in the exhaust path 30. The exhaust filter 42 collects dust contained in the exhaust. The exhaust filter 42 will be described in detail later.

The bypass path 9 connects a bypass inlet 91 located on the upstream side of the exhaust filter 42 in the exhaust path 30 and a bypass outlet 92 located on the downstream side of the heat exchanger 5 in the exhaust path 30. The bypass path 9 bypasses the exhaust gas without passing it through the heat exchanger 5 when dust collected by the exhaust filter 42 is removed. The bypass inlet 91 is located at the peripheral edge of the exhaust filter 42 and opens toward the surface of the exhaust filter 42. The bypass outlet 92 is located between the exhaust outlet 54 and the multiblade impeller 3b, and opens in a direction orthogonal to the axis of the multiblade impeller 3b.

The damper 100 switches between exhaust through the heat exchanger 5 and exhaust through the bypass path 9. For this switching, a motor 62 as an actuator for driving the damper 100 is provided. The damper 100 will be described in detail later.
3A and 3B are views showing the periphery of the exhaust filter 42 and the damper 100, and are enlarged cross-sectional views of the portion where the bypass path 9 branches from the exhaust path 30 as viewed from the arrow X of FIG. FIG. 3A shows the state of exhaust through the heat exchanger 5, and FIG. 3B shows the state of exhaust through the bypass path 9.
4A and 4B are views of the exhaust filter 42 and the damper 100 viewed from the lower side (an arrow Y in FIGS. 3A and 3B). FIG. 4A shows a state of exhaust through the heat exchanger 5, and FIG. 4B shows a state of exhaust through the bypass path 9.

4A and 4B, the damper 100 is a rectangular plate-like member, and the downstream end of the bypass path 9 is bent downward. As shown in FIG. 3A, the damper 100 is sandwiched by the sandwiching member 23 from the vertical direction. The damper 100 closes the bypass path 9 by abutting the bulging portion 93a bulging from the lower side of the bypass path forming member 93 that forms the wall surface of the bypass path 9 at the bent end. On the other hand, as shown in FIG. 3B, the damper 100 shifts in the horizontal direction and is disposed between the exhaust filter 42 and the heat exchanger 5 to close the exhaust path 30. At this time, the bent end of the damper 100 is separated from the bulging portion 93a, and the bypass path 9 is opened.

3A and 3B, the exhaust filter 42 is disposed between the clamping member 23 and the exhaust path forming member 24 that forms the wall surface of the exhaust path 30. In the exhaust path forming member 24, an opening through which exhaust gas flows is formed in a portion where the exhaust filter 42 is disposed. The exhaust filter 42 is fitted to the clamping member 23 and the exhaust path forming member 24 at the periphery. The exhaust path forming member 24 has fins 24a as dust removing means disposed so as to overlap the exhaust filter 42 in the horizontal direction. The fin 24a is rod-shaped and crosses the opening of the exhaust path forming member 24 in the direction in which the damper 100 is shifted (the left-right direction in FIGS. 3A and 3B). The fin 24a is disposed so that the upper end portion thereof is close to the surface of the exhaust filter 42 on the indoor exhaust port 31 side (a net 420 described later).

As shown in FIGS. 4A and 4B, the exhaust filter 42 is annular and is divided into six equal parts by a plurality of shafts extending in the radial direction. 4A and 4B do not show the exhaust path forming member 24 (FIGS. 3A and 3B). The exhaust filter 42 has a mesh portion 420 disposed on the front surface (lower side surface). The exhaust filter 42 prevents the passage of dust by the mesh portion 420. The exhaust filter 42 has a groove 421 formed along the outer periphery. The groove 421 meshes with a gear 61 a connected to the motor 61. With such a structure, the exhaust filter 42 rotates using the motor 61 as a power source. As the exhaust filter 42 rotates, the fins 24 a rotate relative to the mesh portion 420. The exhaust filter 42 is controlled by a control unit described later via the motor 61.

As shown in FIG. 4A and FIG. 4B, the damper 100 has a groove 100a formed at the end portion on the back side of the ventilation device 1. The groove 100 a meshes with a gear 62 a connected to the motor 62. With such a structure, the damper 100 moves in the horizontal direction and switches the exhaust path. The damper 100 is controlled by a control unit described later via the motor 62.

FIG. 5 is a functional block diagram illustrating the configuration of the control unit 301 of the ventilation device 1.
The control unit 301 shown in FIG. 5 is composed of a circuit mainly composed of a CPU 304, and an output of a timer 305 for measuring various control timings is input to the CPU 304.
The control unit 301 issues the following control outputs:
(A) Supply motor control output: output for controlling the motor 2a which is a power source of the supply air blower 2 (b) Exhaust motor control output: output for controlling the motor 3a which is a power source of the exhaust blower 3 (c) Supply Air filter actuator control output: Output for controlling the air supply filter actuator that switches the air supply filter 41, which is normally located at the position of the air supply inlet, to a position where it is exposed to exhaust gas in the cleaning mode. (D) Inside air flow path switching control output: Exhaust gas Output for switching the flow path downstream of the filter 42 to the bypass side (e) Exhaust filter control output: Output for rotating the exhaust filter 42

Subsequently, the operation (operation mode) of the ventilation device 1 according to the present embodiment will be described. The ventilation device 1 has a plurality of operation modes. FIG. 6 is a schematic diagram illustrating the normal operation mode among the operation modes of the ventilation device 1. 7 and 8 are schematic diagrams illustrating the cleaning mode among the operation modes of the ventilation device 1. In particular, FIG. 7 is a diagram illustrating an exhaust filter cleaning mode in the cleaning mode, and FIG. 8 is a diagram illustrating an air supply filter cleaning mode in the cleaning mode.

As shown in FIG. 6, in the normal operation mode, both the air supply blower 2 and the exhaust blower 3 are operated. The air supply is introduced into the air supply path 20 from the outdoor air supply port 21 and supplied indoors from the indoor air supply port 22. On the other hand, the exhaust is introduced into the exhaust path 30 from the indoor side exhaust port 31 and is discharged to the outside from the outdoor side exhaust port 32. At this time, the damper 100 closes the bypass path 9. In the normal operation mode, heat exchange is performed in the heat exchanger 5 between the supply air that flows through the supply passage 20 and the exhaust that flows through the exhaust passage 30. This heat exchange keeps the indoor temperature and humidity constant.

By continuing the normal operation mode, the dust D is collected on the surface of the net portion 412 of the air supply filter 41 on the outdoor air supply port 21 side. On the other hand, dust D is also collected on the surface on the indoor exhaust port 31 side of the mesh portion 420 of the exhaust filter 42.

As shown in FIG. 7, in the exhaust filter cleaning mode, only the exhaust blower 3 is operated. In the exhaust filter cleaning mode, the damper 100 closes the exhaust path 30 on the upstream side of the exhaust filter 42 and opens the bypass path 9. In the exhaust filter cleaning mode, the exhaust flows through the bypass path 9 to bypass the heat exchanger 5 and is discharged to the outside from the outdoor side exhaust port 32.

継続 By continuing the exhaust filter cleaning mode, the dust D collected by the exhaust filter 42 in the normal operation mode is discharged to the outside via the bypass path. At this time, since the mesh portion 412 is not disposed on the outdoor side exhaust port 32 side of the air supply filter 41, the dust D can be discharged outdoors.

As shown in FIG. 8, in the air supply filter cleaning mode, the exhaust blower 3 is operated, but the supply air blower 2 is not operated. In the normal operation mode, the mesh portion 412 of the air supply filter 41 located at the air supply inlet (outdoor air supply port 21) is changed to the exhaust outlet (outdoor exhaust port 32) in the air supply filter cleaning mode. Be placed.

In the air supply filter cleaning mode, the dust D collected by the air supply filter 41 in the normal operation mode is located on the downstream side of the air supply filter 41 in the exhaust path 30. Accordingly, in the air supply filter cleaning mode, the dust D collected by the air supply filter 41 can be discharged outdoors.

FIG. 9 is a flowchart for explaining the operation of the control unit 301 of the ventilation device 1.
When the operation starts, first, a timer time value T related to the operation time (operation duration) in the normal operation mode is read (step S401). Next, the time value T of the timer is compared with a predetermined value Ts as a time interval for executing the cleaning mode operation (step S402).
When the timer value T, which is the operation duration, does not reach the predetermined value Ts or more (step S404: NO), the normal operation mode is maintained. On the other hand, when it is determined that the time count T of the timer exceeds a predetermined value Ts as a time interval for executing the cleaning mode operation (step S404: YES), the cleaning operation mode (exhaust filter cleaning mode and / or air supply filter) is determined. Operation in the cleaning mode) is started (step S403).

FIG. 10 is a flowchart showing details of a control procedure in the cleaning mode (step S403) of the ventilation device 1.
When the cleaning mode is activated, the exhaust filter cleaning mode (FIG. 7) is executed. Specifically, first, the motor 2a that is the power source of the supply air blower 2 is stopped by the supply motor control output from the control unit 301 (step S501). Subsequently, the flow path downstream of the exhaust filter 42 is switched to the bypass path 9 side (step S502). This switching is executed by the control unit 301 outputting an exhaust flow path switching control output to the motor 62 for switching the flow path. Next, the motor 3a that is the power source of the exhaust blower 3 is switched to the high output operation by the exhaust motor control output from the control unit 301 (step S503). As a result, the resistance of the flow path is reduced and the risk of dust deposition on other parts in the ventilator (for example, the heat exchanger 5 that performs heat exchange between exhaust air and air supply) is released. Dust accumulated on the exhaust filter 42 is effectively removed by the exhaust gas whose flow rate has been increased by the output operation.

In step S503, the exhaust filter 42 is rotated. The rotation of the exhaust filter 42 is executed when the control unit 301 outputs an exhaust filter control output to the motor 61. By rotating the exhaust filter 42, the fin 24 a rotates relative to the exhaust filter 42 and comes into contact with dust accumulated on the exhaust filter 42. The dust is more effectively removed by the fin 24a coming into contact with the dust accumulated on the exhaust filter 42.

When the motor 3a shifts to the high output operation, the timekeeping operation is performed for the duration TE1 of the cleaning operation of the exhaust filter 42 (step S504), and whether or not the operation time TE1 has reached the predetermined duration Ts1 of the exhaust filter cleaning. Is monitored (step S505). This continuation time Ts1 related to the cleaning of the exhaust filter 42 is, for example, a time within and outside 30 seconds. Until the time Ts1 is reached, the exhaust filter 42 continues to be cleaned (step S505: NO).

When the operation time TE1 reaches the predetermined time Ts1 (step S505: YES), the flow path downstream of the exhaust filter 42 that has been switched to the bypass path 9 side in step S501 is returned to the original state (step S506). The flow path return in step S506 is executed by the control unit 301 outputting the exhaust flow path switching control output to the motor 62 for switching the flow path. Thereafter, the operation proceeds to the air supply filter cleaning mode (FIG. 8).
In step S506, the control unit 301 stops the motor 61 by the exhaust filter control output, and stops the rotation of the exhaust filter 42.

Subsequent to step S506, the position of the air supply filter 41 is changed to a position where it is exposed to exhaust (step S507). The change of the position of the air supply filter 41 in step S507 is performed by the control unit 301 giving an air supply filter actuator control output to the air supply filter actuator (that is, the air supply filter moving device 8). With this control, the arrangement of the air supply filter 41 is changed so that the air supply filter 41 located at the air supply inlet (outdoor side air supply port 21) is positioned at the exhaust outlet (outdoor side exhaust port 32).
At the position after the change, the air supply filter 41 is exposed to the exhaust gas that has been switched to the high-power operation in step S502 to increase the flow velocity, and dust accumulated on the surface is effectively removed.

When the position of the air supply filter 41 is changed in step S507 and the air supply filter cleaning mode (FIG. 8) starts, the timekeeping operation is then performed for the duration TE2 of the cleaning operation of the air supply filter 41 (step S508). It is monitored whether or not the operation time TE2 has reached a predetermined duration Ts2 of the air supply filter cleaning (step S509).
The predetermined duration Ts2 related to the cleaning of the air supply filter 41 is, for example, a time within and outside 30 seconds. Until the time Ts2 is reached, the air supply filter cleaning mode (FIG. 8) is continued (step S509: NO).

When the operation time TE2 reaches the predetermined time Ts2 (step S509: YES), the air supply filter 41 whose arrangement has been changed so as to be positioned at the exhaust outlet (outdoor exhaust port 32) in step S507 is the original. Returning to the position (outdoor air supply port 21) (step S510). The return of the air supply filter position in step S510 is executed by the control unit 301 outputting the air supply filter actuator control output to the air supply filter moving device 8 which is an actuator for changing the air supply filter position. The

Following step S510, the operation of the motor 2a that is the power source of the air supply blower 2 is restarted by the supply motor control output from the control unit 301 (step S511). In step S511, the motor 3a that is the power source of the exhaust blower 3 is switched from the high output operation to the normal output operation by the exhaust motor control output from the control unit 301.
Thus, the operation in the cleaning mode (FIG. 9: Step S403) is completed, and the control procedure by the control unit 301 proceeds to Step S403 in FIG.

According to the ventilation apparatus 1 which concerns on this embodiment demonstrated above, the following effects are show | played.
In the above embodiment, the heat exchanger 5 that performs heat exchange between the supply air that flows through the supply air path 20 and the exhaust gas that flows through the exhaust path 30, and the upstream side of the heat exchanger 5 in the exhaust path 30 are arranged. And the exhaust filter 42 that collects dust contained in the exhaust gas, the ventilator 1 connects the upstream side of the exhaust path 30 with respect to the exhaust filter 42 and the downstream side of the heat exchanger 5 of the exhaust path 30. The bypass path 9 is further provided.
Thereby, the dust collected on the indoor exhaust port 31 side of the exhaust path 30 can be smoothly discharged to the outdoor side through the bypass path 9 without passing through the heat exchanger 5. Therefore, in the ventilation apparatus 1 provided with the heat exchanger 5, it can suppress that heat exchange performance falls.

In the said embodiment, the ventilation apparatus 1 shall further have the fin 24a arrange | positioned on the surface by the side of the indoor side exhaust port 31 of the exhaust filter 42. FIG.
Thereby, the removal effect of the dust collected with the exhaust filter 42 can be improved more.

In the above embodiment, the bypass inlet 91 opens toward the surface direction of the exhaust filter 42.
Thereby, when the bypass inlet 91 opens toward the surface direction of the exhaust filter 42, when the dust is discharged outdoors by the exhaust via the bypass path 9, the exhaust blows from the lateral direction to the surface of the exhaust filter 42. It will be. By the exhaust gas blown from the side, the effect of removing dust collected by the exhaust filter 42 can be further enhanced.

In the said embodiment, the ventilation apparatus 1 shall further be provided with the damper 100 which switches the exhaust_gas | exhaustion via the heat exchanger 5, and the exhaust_gas | exhaustion via the bypass route 9. FIG. Furthermore, the damper 100 is assumed to switch to the exhaust via the bypass path 9 after executing the exhaust via the heat exchanger 5 for a predetermined time.
Thereby, the ventilation apparatus 1 can be operated stably by removing the dust collected by the exhaust filter 42 every predetermined time.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, there may be no dust removing means arranged on the surface of the exhaust filter 42 on the indoor exhaust port 31 side, and the shape and material of the exhaust filter 42 are not limited even when arranged. The dust removing means disposed on the surface of the exhaust filter 42 on the indoor exhaust port 31 side may be, for example, a brush that contacts the exhaust filter 42.

<Second embodiment>
Next, a second embodiment of the present invention will be described in detail with reference to the drawings. In the description after the second embodiment, parts that are not particularly described have the same configuration as that of the first embodiment.
The ventilation device of the second embodiment includes a static voltage application device 7 (not shown).

FIG. 11 is a perspective view of the air supply filter 41. The air supply filter 41 has a substantially circular frame portion 410 and a net portion 412 and is divided in half by a shaft portion 411 extending in the radial direction. The net part 412 is arranged on one semicircular side divided by the shaft part 411 and has a semicircular shape. The mesh unit 412 is formed of a coarse mesh. The air supply filter 41 prevents the passage of dust by the mesh part 412.

In the air supply filter 41, the frame portion 410 is disposed across the outdoor side air supply port 21 and the outdoor side exhaust port 32. The air supply filter 41 has a driven gear 43 formed along the outer periphery of the frame portion 410. The air supply filter 41 is rotated by an air supply filter moving device 8 described below. The air supply filter 41 vibrates in conjunction with the air supply filter moving device 8 by vibrating it.

In the air supply filter moving device 8, the drive gear 82 meshes with the driven gear 43 formed in the frame portion 410 of the air supply filter 41, so that the air supply filter 41 is removed from the outdoor air supply port 21 of the air supply path 20. The exhaust path 30 is moved to the outdoor side exhaust port 32 side. The drive gear 82 vibrates the air supply filter 41 by moving in small increments in a short time before and after the rotation direction.

The static voltage applying device 7 includes a power source (not shown) and a plurality of electric wires 71 (see FIG. 1). The electric wire 71 is disposed at a position facing the mesh portion 412 of the air supply filter 41 disposed in the outdoor air supply port 21. A plurality of electric wires 71 are arranged in a rectangular frame arranged in front of the net portion 412 so as to extend from one side to the other in the width direction of the net portion 412 along the longitudinal direction of the heat exchanger 5. The static voltage applying device 7 is supplied with electricity from a power source and applies a static voltage to the electric wire 71 to charge the mesh portion 412 of the air supply filter 41 facing the electric wire 71.

FIG. 12 is a block diagram showing the control unit 301 in the ventilation device 1 of the second embodiment.
As illustrated in FIG. 12, the control unit 301 includes an operation mode unit 306 and a cleaning mode unit 307, and switches the ventilation device 1 between an operation mode and a cleaning mode. Further, the control unit 301 controls the air supply blower 2 and the exhaust blower 3, the static voltage application device 7, the motor 81, and the drive gear 82 according to the operation mode unit 306 and the cleaning mode unit 307.

Specifically, the control unit 301 is connected to the static voltage application device 7. In the operation mode, the control unit 301 controls the static voltage application device 7 to apply a static voltage to the electric wire 71 and charge the air supply filter 41. To command.
The control unit 301 monitors the accumulated time in the operation mode. And the control part 301 switches the operation mode of the ventilation apparatus 1 to cleaning mode for every predetermined time according to the integration time of an operation mode, and performs the cleaning control of the air supply filter 41. FIG.
In the cleaning mode, the control unit 301 stops the air supply blower 2 and moves the air supply filter 41 from the outdoor side air supply port 21 to the outdoor side exhaust port 32 while the exhaust air blower 3 is driven.
In the cleaning mode, the control unit 301 stops the application of the static voltage by the static voltage application device 7 and releases the charge of the air supply filter 41.
In the cleaning mode, the control unit 301 moves the driving gear 82 of the air supply filter moving device 8 in small increments in a short period and vibrates the air supply filter 41 by the vibration of the driving gear 82.

FIG. 13 is a schematic diagram of operation modes in the ventilation device 1 of the second embodiment.
FIG. 14 is a schematic diagram of a cleaning mode in the ventilation device 1 of the second embodiment. FIG. 15 is a flowchart for explaining the procedure for using the ventilation device of the present embodiment.
A state of use of the ventilation device 1 of the second embodiment will be described with reference to FIGS.
As shown in FIG. 13, in the operation mode, the outside air OA flows into the housing 10 from the outdoor side air inlet 21 as the air supply SA. The air supply filter 41 is disposed across the outdoor side air supply port 21 and the outdoor side exhaust port 32. The air supply filter 41 is charged with static electricity by the electrostatic voltage application device 7. The semicircular net 412 of the air supply filter 41 is disposed on the outdoor air supply port 21 side. For this reason. Dust contained in the outside air OA is collected by the net 412 and does not pass through the air supply path 20.

The outside air OA flowing into the housing 10 is sucked by the air supply blower 2 and passes through the air supply path 20 in the heat exchanger 5. Inside the heat exchanger 5, the return air RA from the indoor side, which becomes the exhaust EA, circulates without being mixed with the supply air SA flowing from the outside air OA, and only the heat and humidity are supplied by the supply air SA and the exhaust EA. Have been replaced. For this reason, the temperature of supply air SA which flows in from the outdoors becomes close to the temperature of indoor air.
The outside air OA passes through the air supply path 20, becomes air supply SA supplied from the indoor air supply port 22, and flows into the room.

On the other hand, the indoor return air RA flows into the housing 10 from the indoor exhaust port 31. An exhaust filter 42 is disposed at the indoor exhaust port 31, and dust floating in the room is collected by the exhaust filter 42 and does not pass through the exhaust path 30.

The return air RA that has flowed into the housing 10 becomes the exhaust EA, is sucked by the exhaust blower 3, and passes through the exhaust path 30 in the heat exchanger 5.
The return air RA passes through the exhaust passage 30 and is discharged from the outdoor side exhaust port 32 to the outdoors.

If the operation is continued in the operation mode, dust adhering to the mesh portion 412 of the air supply filter 41 increases. When dust increases, it becomes difficult for air to pass through the outdoor air supply port 21, and pressure loss when passing through the air supply path 20 also increases.

The control unit 301 monitors the accumulated operation time in the operation mode (step S1). The control unit 301 performs integration from the time when the previous cleaning mode is switched to the operation mode, and switches the operation mode to the cleaning mode when a preset integration time has elapsed. For example, when 5 hours or 6 hours have elapsed in the operation mode, the 1-minute operation mode is switched to the cleaning mode. If the preset integration time has not elapsed, the operation mode is continued (step S2).

As shown in FIG. 15, in the cleaning mode, the operation of the air supply blower 2 is stopped while the exhaust blower 3 is driven (step S3). Further, the control unit 301 controls the motor 81 and the drive gear 82 to rotate the air supply filter 41 by 180 degrees. By this rotation, the mesh part 412 moves to the outdoor side exhaust port 32 of the exhaust path 30 (step S4). In the exhaust path 30, air flows from the indoor side toward the outdoor side due to the rotation of the exhaust blower 3. For this reason, only the net | network part 412 to which dust adhered is located in the exhaust path 30, and dust is discharged | emitted outdoors.

Furthermore, the control unit 301 controls the static voltage application device 7 to stop the application of the static voltage to the air supply filter 41 (step S5). For this reason, the dust is more easily separated from the net portion 412.

Further, the control unit 301 drives the motor 81 to vibrate the drive gear 82 (step S6). The air supply filter 41 vibrates due to the vibration of the drive gear 82. Due to the vibration of the air supply filter 41, the dust is more easily separated from the net portion 412.

After removing dust adhering to the air supply filter 41 in the cleaning mode, the control unit 301 controls the drive gear 82 to stop the vibration of the air supply filter 41 (step S7). Further, the control unit 301 further rotates the air supply filter 41 by 180 degrees to return the mesh unit 412 to the outdoor side air supply port 21 (step 8). Moreover, the control part 301 starts the static voltage application apparatus 7, applies a static voltage to the air supply filter 41, and charges the air supply filter 41 (step S9). Then, the operation of the air supply blower 2 is started (step S10).

The ventilation device 1 having the above configuration has the following effects.
In the present embodiment, the ventilation device 1 is connected to an outdoor air supply port 21 arranged on the outdoor side and an indoor air supply port 22 arranged on the indoor side, and an air supply route 20. And an air supply blower 2 that sends outside air to the indoor side. Further, the ventilation device 1 is disposed in the exhaust path 30, which connects the indoor side exhaust port 31 disposed on the indoor side and the outdoor side exhaust port 32 disposed on the outdoor side, and is disposed on the indoor side. And an exhaust blower 3 for sending air to the outdoor side. In addition, the ventilation device 1 is disposed on the outdoor air supply port 21 side of the air supply path 20, and an air supply filter 41 that collects dust contained in outside air flowing into the air supply path 20, and an air supply filter 41 are provided. An air supply filter moving device 8 for moving to the outdoor exhaust port 32 side of the exhaust path 30, a static voltage applying device 7 for applying a static voltage to the air supply filter 41, an air supply blower 2, an exhaust blower 3, and an air supply filter And a control unit 301 that controls the moving device 8 and the static voltage applying device 7. Then, the air supply filter moving device 8 moves the air supply filter 41 to the outdoor side exhaust port 32 side of the exhaust passage 30, and the static voltage applying device 7 applies the static voltage to the air supply filter 41. By stopping and driving at least the exhaust blower 3, the filter cleaning control for removing dust collected by the air supply filter 41 was executed.

According to the present embodiment, since a static voltage is applied to the air supply filter 41 of the ventilation device 1, even fine dust can be collected more reliably. Further, in the cleaning mode, with the exhaust blower 3 being driven, the air supply filter 41 to which dust is attached is moved to the exhaust path 30 and the application of the static voltage is stopped. For this reason, in the state where the application of the static voltage is stopped, the dust is discharged outdoors by the exhaust EA. Therefore, the dust is easily separated from the air supply filter 41, and the dust can be reliably removed from the air supply filter 41. As described above, according to the ventilation device 1 of the present embodiment, finer dust can be collected and removed.

Conventionally, ventilators that take outside air from the outside into the room and exhaust indoor air to the outside are known. In addition, it is known that a filter is disposed in the ventilation device to remove dust contained in air taken from the outdoors.

If dust adheres to the filter, the ventilation air volume decreases, so it is necessary to remove the dust from the filter. Therefore, techniques for removing dust by various means such as providing a movable brush for removing dust on the filter have been proposed. In the technique of Patent Document 2, a protrusion that slides on the brush is provided in the exhaust path, and the brush strikes the protrusion and repels and removes dust from the brush by a vibrating force.
However, in the conventional technology, when the dust becomes finer, there is a problem that fine dust is not separated from the brush even if it hits the protrusion slidingly contacting the brush, and it is difficult to remove the dust sufficiently. In addition, there is a problem that fine dust that cannot be removed from the brush is taken into the room when passing through the intake duct, and fine dust tends to enter the room.

On the other hand, the ventilator 1 according to the second embodiment aims to provide a ventilator that can reliably remove dust from the filter, and can reliably remove dust from the filter as described above. become.

Further, according to the present embodiment, the air supply filter moving device 8 is configured to include the motor 81 as a drive source. Further, the control unit 301 controls the motor 81 to vibrate the air supply filter 41 during execution of the air supply filter cleaning control, thereby removing dust collected by the air supply filter 41. Thereby, the dust adhering to the air supply filter 41 can be more reliably removed.

Moreover, according to this embodiment, the control part 301 was made to perform filter cleaning control for every predetermined time. Thereby, the dust adhering to the air supply filter 41 can be removed automatically, and even if the user forgets, the air supply filter 41 can be continuously cleaned.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the air supply filter 41 easily removes dust by vibrating by the motor 81 of the air supply filter moving device 8, but is not limited thereto. For example, a physical dust removing member such as a fin may be attached to the air supply filter, and dust may be removed by this member.

In the above-described embodiment, the air supply filter 41 includes the mesh portion 412 configured by a coarse mesh, but is not limited thereto. The configuration of the air supply filter 41 is not limited as long as dust can be prevented from passing therethrough, and may be configured to be detachable from the circular frame of the air supply filter 41.

In the above embodiment, in the cleaning mode, the operation of the air supply blower 2 is stopped while the exhaust blower 3 is driven. However, the present invention is not limited to this. Once the exhaust blower 3 is stopped, the air supply filter 41 may be moved, and the exhaust blower 3 may be moved again.

<Third embodiment>
The ventilation device 1 according to the third embodiment includes an illuminance sensor 302 and a dust sensor 303.
FIG. 16 is a functional block diagram illustrating the configuration of the control unit 301 of the ventilation device 1 of FIG.
The outputs of the illuminance sensor 302 and the dust sensor 303 are supplied to the control unit 301 in FIG. The control unit 301 is composed of a circuit mainly including a CPU 304, and an output of a timer 305 for measuring various control timings is input to the CPU 304.
The control unit 301 issues the following control output signals:
(A) Air supply motor control output: signal for controlling the motor 2a that is the power source of the air supply blower 2 (b) Exhaust motor control output: signal that controls the motor 3a that is the power source of the exhaust air blower 3 (c) Supply Air filter actuator control output: Signal (d) for controlling an air supply filter actuator (supply air filter moving device 8) that switches the air supply filter 41, which is normally at the position of the air supply inlet, to a position where it is exposed to exhaust gas in the cleaning mode. Exhaust flow path switching control output: A signal for controlling the driving of the motor 62 to switch the flow path downstream of the exhaust filter 42 to the bypass side in the cleaning mode.

FIG. 17 is a flowchart for explaining the operation of the control unit 301 of the ventilation device 1 of FIG.
When the operation starts, the output L of the illuminance sensor 302 is first read (step S401). Next, the output L is compared with Ls, which is a predetermined level value regarding the detected illuminance (step S402). For example, when the illuminance sensor 302 is arranged so as to detect room illuminance, Ls is set as a value corresponding to a case where the room is completely turned off or only the nightlight is lit.
When the output L is equal to or lower than the predetermined level Ls in step S402 (step S402: YES), the control unit 301 is in a silent mode in which the exhaust blower 3 and the supply blower 2 are operated at a low output. As described above, the exhaust motor control output and the air supply motor control output described above are issued (step S410).
In this silent mode, the exhaust blower 3 and the supply blower 2 are operated at a low output and the noise level is lowered, so that the possibility of causing environmental noise problems at night is effectively avoided, and further, the ventilation device is operated at bedtime. There is no risk that sleep may be disturbed by sound.

If the output L is not less than or equal to the predetermined level Ls in step S402 (step S402: NO), then the timer time value T relating to the operation time (operation duration) is read (step S403). ). Next, the timer value T is compared with a predetermined value Ts as a time interval for executing the cleaning mode operation (step S404).
When the measured value T of the timer, which is the operation duration, does not reach the predetermined value Ts (step S404: NO), the output D of the dust sensor 303 is read (step S405).

Next, the output D is compared with a predetermined value Ds related to the output of the dust sensor 303 (step S406). This predetermined value Ds is, for example, a predetermined value set as a level at which it is desirable for indoor dust to be subjected to forced ventilation.
When the output D does not reach the predetermined value Ds or more (step S406: NO), the control unit 301 sets the exhaust motor described above so as to be in the normal operation mode in which the exhaust blower 3 and the supply blower 2 are operated with normal output. A control output and an air supply motor control output are issued (step S407).
In this normal operation mode, the exhaust blower 3 and the supply air blower 2 are operated with normal output, and proper ventilation is maintained.

On the other hand, when the output D of the dust sensor 303 is equal to or greater than the predetermined value Ds in step S406 (step S406: YES), the control unit 301 is a strong operation that operates the exhaust blower 3 and / or the supply blower 2 with high output. An exhaust motor control output and / or an air supply motor control output are issued so as to be in the mode (step S408).
When the strong operation mode is entered in step S408, the process returns to step S405, and the output D of the dust sensor 303 is read (step S405).

That is, once the strong operation mode is entered, whether or not the output D of the dust sensor 303 at the present time is still equal to or greater than a predetermined value Ds set as a level at which it is desirable for indoor dust to be subjected to forced ventilation. Is determined (step S406), and as long as it is equal to or greater than the predetermined value Ds (step S406: YES), the strong operation mode is continued, and when the indoor air is cleaned by decreasing to the predetermined value Ds or less (step S406: NO) ) And shift to the normal operation mode (step S407).
In the ventilator of the present embodiment, the operation is performed in the strong operation mode only when necessary in this way, and the operation is continuously switched to the silent mode at night and the like, so that the noise reduction effect is achieved. Excellent and energy saving.

When it is determined in step S404 described above that the time measured value T of the timer has exceeded a predetermined value Ts as a time interval for performing the cleaning mode operation (step S404: YES), dust from outside air supplied by the ventilator is removed. In order to discharge the dust adhering to the air supply filter 41 to be removed and / or the exhaust filter 42 to remove the dust of the inside air to be exhausted, the operation enters a cleaning mode in which the exhaust blower 3 is operated at a high output (step S409).

FIG. 18 is a flowchart showing details of the control procedure in the cleaning mode (step S409).
When the cleaning mode is activated, the flow path downstream of the exhaust filter 42 is first switched to the bypass path 9 side (step S501). This switching is executed by the control unit 301 outputting an exhaust flow path switching control output to the motor 62 that is an actuator for switching the flow path. Next, the motor 3a that is the power source of the exhaust blower 3 is switched to the high output operation by the exhaust motor control output from the control unit 301 (step S502). As a result, the resistance of the flow path is reduced and the risk of dust deposition on other parts in the ventilator (for example, the heat exchanger 5 that performs heat exchange between exhaust air and air supply) is released. Dust accumulated on the exhaust filter 42 is effectively removed by the exhaust gas whose flow rate has been increased by the output operation.

When the motor 3a shifts to the high output operation, the timekeeping operation is performed for the duration TE1 of the cleaning operation of the exhaust filter 42 (step S503), and whether or not the operation time TE1 has reached the predetermined duration Ts1 of the exhaust filter cleaning. Is monitored (step S504). This continuation time Ts1 related to the cleaning of the exhaust filter 42 is, for example, a time within and outside 30 seconds. Until the time Ts1 is reached, the exhaust filter 42 is continuously cleaned (step S504: NO).

When the operation time TE1 reaches the predetermined time Ts1 (step S504: YES), the flow path downstream of the exhaust filter 42 that has been switched to the bypass path 9 in step S501 is returned to the original state (step S505). The flow path return in step S505 is executed by the control unit 301 outputting the exhaust flow path switching control output to the actuator for switching the flow path. Thereafter, the procedure proceeds to a procedure for cleaning the air supply filter 41.

Subsequent to step S505 described above, the position of the air supply filter 41 is changed to a position where it is exposed to the exhaust gas (step S506). The change of the position of the air supply filter 41 in step S506 is performed by the control unit 301 giving an air supply filter actuator control output to the air supply filter actuator (that is, the air supply filter moving device 8). With this control, the arrangement of the air supply filter 41 is changed so that the air supply filter 41 located at the air supply inlet (outdoor side air supply port 21) is positioned at the exhaust outlet (outdoor side exhaust port 32).
At the position after the change, the air supply filter 41 is exposed to the exhaust gas that has been switched to the high-power operation in step S502 to increase the flow velocity, and dust accumulated on the surface is effectively removed.

When the position of the air supply filter is changed in step S506 and the cleaning operation of the air supply filter 41 is started, the timekeeping operation is then performed for the duration TE2 of the cleaning operation of the air supply filter 41 (step S507). It is monitored whether TE2 has reached a predetermined duration Ts2 for air supply filter cleaning (step S508).
The predetermined duration Ts2 related to the cleaning of the air supply filter 41 is, for example, a time within and outside 30 seconds. Until the time Ts2 is reached, the cleaning operation of the air supply filter 41 is continued (step S508: NO).

When the operation time TE2 reaches the predetermined time Ts2 (step S508: YES), the air supply filter 41 whose arrangement has been changed so as to be located at the exhaust outlet (outdoor exhaust port 32) in step S506 is the original. Returning to the position (outdoor air supply port 21) (step S509). The return of the air supply filter position in step S509 is executed by the control unit 301 outputting the air supply filter actuator control output to the air supply filter moving device 8 which is an actuator for changing the air supply filter position. The
Thus, the operation in the cleaning mode (FIG. 4: step S409) is completed, and the control procedure by the control unit 301 proceeds to step S405 in FIG.

As can be easily understood with reference to the flowchart of FIG. 17, in the present embodiment, particularly at night or at bedtime when the output L of the illuminance sensor 302 is equal to or less than the predetermined value Ls (step S <b> 402: YES). ), The operation in the strong operation mode (step S408) and the cleaning mode (step S409) with relatively large operation noise is prohibited, and only the operation in the silent mode (step S407) is allowed.

FIG. 19 is a diagram showing ventilation operation modes that are allowed according to the output of the illuminance sensor 302 and the output of the dust sensor 303. In the figure, “H” related to the illuminance sensor 302 indicates a bright case where the output level is not lower than the predetermined value Ls, and “L” indicates a dark case where the output level is lower than the predetermined value Ls.
As shown in FIG. 19, in the case of “H” where the surroundings are determined to be bright by the output of the illuminance sensor 302, the driving in both the strong operation mode and the normal operation mode is performed according to the output of the dust sensor 303. Can be selectively performed. That is, when the output of the dust sensor 303 is relatively high and corresponds to “H”, indoor air is dirty and rapid ventilation is desired, and ventilation in the strong operation mode is performed. When the output of the dust sensor 303 is relatively low and corresponds to “L”, ventilation is performed in the normal operation mode.

On the other hand, in the case of “L” in which it is determined that the surroundings are dark by the output of the illuminance sensor 302, it is a time when gentle ventilation is desired regardless of the output of the dust sensor 303. Only allowed.

The ventilation device 1 having the above configuration has the following effects.
In the present embodiment, in the ventilator 1 that supplies outside air from outside and exhausts indoor air, according to the output of the illuminance sensor 302 that detects ambient illuminance and the dust sensor 303 that detects indoor dust. The control unit 301 that controls the operation of the ventilation device, the air supply fan 2 that supplies outside air into the room according to a control signal from the control unit 301, and the indoor air according to the control signal from the control unit 301 And an exhaust blower 3 for exhausting the air. Further, the control unit 301 is configured to output the exhaust blower 3 at a high output in order to discharge dust adhering to the air supply filter 41 that removes dust of outside air to be supplied and / or the exhaust filter 42 that removes dust of inside air to be exhausted. There are two operation modes: a cleaning mode for driving and a strong operation mode for operating the exhaust blower 3 and / or the supply blower 2 at a high output when the output of the dust sensor 303 exceeds a predetermined value when not in the cleaning mode. When the illuminance detected by the illuminance sensor 302 is below a predetermined level, the operation mode is switched between at least one of the operation modes and the silent mode in which the exhaust blower 3 and the supply blower 2 are operated at low output. Among the operation modes, operation in an operation mode that can be selected by the control unit 301 is prohibited.

According to the present embodiment, it is determined that the illuminance sensor 302 is disposed so as to detect outdoor light and the nighttime illuminance is low, or the illuminance sensor 302 is disposed so as to detect indoor illuminance. If it is determined that all lights are turned off or only the nightlight is turned on, ventilation operation in a mode with a relatively high noise level is prohibited. For this reason, driving noise is quiet at night or at bedtime, and the risk of disturbing environmental noise and sleep is eliminated.
In addition, since operation in the silent mode is allowed even at night or at bedtime, it can be embodied as a ventilation device that performs continuous operation for 24 hours.

Further, in the present embodiment, when the illuminance detected by the illuminance sensor 302 is equal to or lower than a predetermined level, the control unit 301 is operated in the silent mode. As a result, when the detected illuminance by the illuminance sensor 302 falls below a predetermined level and there is a high probability that noise will be a problem at night or the like, the operation is automatically switched to the silent mode, so noise can be effectively prevented. .

Conventionally, an automatic ventilation device that reduces nighttime noise has been proposed. That is, in the conventional automatic ventilation device, the noise is reduced by limiting the operation of the fan motor that performs ventilation in the dark night according to the detection value of the illuminance sensor.

In the conventional ventilator, the level of operation is switched according to the output of the sensor that detects air contamination.On the other hand, if the detected value of the illuminance sensor falls below a predetermined value, the fan motor is stopped to generate noise. I try to suppress it.

However, conventional ventilators are not suitable for applications that require 24 hours continuous operation.
Further, there is no special consideration for application to an automatic cleaning function of an air filter, which is popular in recent years, that is, a model that operates in a cleaning mode.
The ventilator 1 according to the third embodiment aims to provide a ventilator that can perform an effective silent operation even for a model that operates continuously for 24 hours and a model that has a cleaning mode, as described above. It becomes possible to provide such a ventilator.

FIG. 20 is a diagram illustrating conditions under which driving is performed in each of the strong operation mode, the silent mode, the cleaning mode, and the normal operation mode in the present embodiment.
As shown in FIG. 20, the operation in the strong operation mode is when the output of the illuminance sensor 302 is relatively high and corresponds to “H”, and the output of the dust sensor 303 is also relatively high “H”. Furthermore, it is executed when the operation duration time is not reached the time when the next cleaning mode is executed ("short" time shown).

The operation in the silent mode is executed regardless of the output of the dust sensor 303 or the operation duration when the output of the illuminance sensor 302 is relatively low and corresponds to “L”. However, even when the output of the illuminance sensor 302 corresponds to “H”, when the output of the dust sensor 303 corresponds to “L”, the operation in the normal operation mode is executed.
The availability of the operation in the cleaning mode is independent of the output of the dust sensor 303. When the output of the illuminance sensor 302 is relatively high and corresponds to “H” as a condition for execution permission, when the operation duration is at the time when the next cleaning mode is executed ( It is executed at the “long” time in the figure.

In the above-described embodiment, the case where the operation in each mode of the strong operation mode, the silent mode, the cleaning mode, and the normal operation mode can be performed has been described in detail. It is not limited to this. That is, it is configured to switch between at least one of the two operation modes of the cleaning mode and the strong operation mode and the silent mode, and when the illuminance detected by the illuminance sensor 302 is below a predetermined level, A ventilator having a mode for prohibiting operation in an operation mode that can be selected by the control unit among the two operation modes is also included in the present invention.

<Fourth embodiment>
In 4th embodiment, the ventilator 1 is provided with each module for performing operation mode switching control.
FIG. 21 is a functional block diagram of the control unit 301 provided in the ventilation device 1 according to the present embodiment. The control unit 301 shapes an input signal waveform from various sensors, which will be described later, corrects the voltage level to a predetermined level, and converts an analog signal value into a digital signal value. And a processing unit CPU304. In addition, the control unit 301 includes a storage circuit that stores various calculation programs executed by the CPU 304, calculation results, and the like, and an output circuit that outputs control signals to the air supply blower 2 and the exhaust blower 3.

The control unit 301 having the above hardware configuration executes the operation mode switching control for switching each operation mode according to the outdoor temperature and the indoor temperature, and executes each operation mode. As shown in FIG. 21, the control unit 301 is a normal operation mode unit 311, an exhaust operation mode unit 312, an air supply operation mode unit 313, and a strong exhaust operation mode as modules for executing the operation mode switching control. A unit 314, a first switching operation mode unit 315, a second switching operation mode unit 316, an air supply restriction operation mode unit 317, and a switching unit 318.
Further, the detection signal output from the outdoor temperature sensor 321, the outdoor humidity sensor 322, the indoor temperature sensor 323, and the indoor humidity sensor 324 is transmitted to the control unit 301. The control unit 301 performs operation mode switching control based on these detection signals.

Hereinafter, the function of each module of the control unit 301 will be described with reference to FIG.
FIG. 22 is a diagram illustrating an example of switching of operation modes of the ventilation device 1 according to the present embodiment. In FIG. 22, the horizontal axis represents the outdoor temperature, and the vertical axis represents the indoor temperature. That is, FIG. 22 shows an example of operation mode switching according to the outdoor temperature and the indoor temperature. Moreover, the straight line Z in FIG. 22 represents the state where outdoor temperature and indoor temperature are equal.

First, the normal operation mode unit 311 executes a normal operation mode in which the rotation speed of the air supply blower 2 is set to a normal rotation speed and the rotation speed of the exhaust blower 3 is set to a normal rotation speed. This normal operation mode is an operation mode that is normally executed when the indoor environment is better than the outdoor environment as shown in FIG. In this normal operation mode, air supply and exhaust are actively performed, and heat exchange is actively performed between the two, so that the indoor environment is improved.
Here, the normal number of rotations is set in advance according to the size of the indoor space where the ventilation device 1 is installed.

The exhaust operation mode unit 312 executes the exhaust operation mode in which the rotation speed of the supply air blower 2 is made smaller than that in the normal operation mode and the rotation speed of the exhaust blower 3 is the normal rotation speed. This exhaust operation mode is executed when the indoor temperature is 26 ° C. or higher and the outdoor temperature is lower than the indoor temperature. For example, as shown in FIG. 22, it is executed when the outdoor temperature is about 18 ° C. to 22 ° C. and the indoor temperature is about 26 ° C. or more. In this exhaust operation mode, weak air supply is performed and exhaust is actively performed. As a result, exhaust (exhaust heat) is prioritized and the indoor environment is improved. At the same time, since air supply is not stopped, generation of mold in the heat exchanger 5 is suppressed.

The air supply operation mode unit 313 executes the air supply operation mode in which the rotation speed of the supply air blower 2 is set to a normal rotation speed and the rotation speed of the exhaust blower 3 is made smaller than that in the normal operation mode. This air supply operation mode is executed when the indoor temperature is 14 ° C. or lower and the outdoor temperature is higher than the indoor temperature. For example, as shown in FIG. 22, it is executed when the outdoor temperature is about 20 ° C. to 27 ° C. and the indoor temperature is 14 ° C. or less. In this air supply operation mode, weak air is exhausted and air is actively supplied. As a result, air supply (heat supply) is prioritized and the indoor environment is improved. At the same time, since the exhaust is not stopped, generation of mold in the heat exchanger 5 is suppressed.

The strong exhaust operation mode unit 314 executes a strong exhaust operation mode in which the rotational speed of the exhaust blower 3 is made larger than that in the normal operation mode. For example, as shown in FIG. 22, the strong exhaust operation mode is executed when the outdoor temperature is about 28 ° C. to 32 ° C. and the indoor temperature is higher than the outdoor temperature. For example, in this strong exhaust operation mode, weak air supply is performed, and powerful exhaust is performed. As a result, exhaust (exhaust heat) is promoted and the indoor environment is improved. At the same time, since air supply is not stopped, generation of mold in the heat exchanger 5 is suppressed.

The first switching operation mode unit 315 executes a first switching operation mode that alternately switches between the air supply operation mode and the exhaust operation mode described above. For example, as shown in FIG. 22, the first switching operation mode is executed when the outdoor temperature is about 23 ° C. to 27 ° C. and the indoor temperature is about 27 ° C. or higher. In the first switching operation mode, ventilation is actively performed without heat exchange, and the indoor environment is improved. At the same time, since supply and exhaust are not stopped, generation of mold in the heat exchanger 5 is suppressed.

The second switching operation mode unit 316 executes a second switching operation mode that alternately switches between the air supply operation mode and the exhaust operation mode described above. For example, as shown in FIG. 22, in the second switching operation mode, when the outdoor temperature is about 18 ° C. to 24 ° C. and the indoor temperature is about 15 ° C. to 25 ° C., that is, there is almost no difference between the outdoor temperature and the indoor temperature. It is executed when heat exchange between supply air and exhaust is not required. In the second switching operation mode, the air supply operation mode and the exhaust operation mode are executed alternately, thereby suppressing unnecessary air supply / exhaust and reducing the power cost. At the same time, since supply and exhaust are not stopped, generation of mold in the heat exchanger 5 is suppressed.

The air supply restriction operation mode unit 317 sets the rotation speed of the supply air blower 2 to a normal rotation speed and makes the rotation speed of the exhaust blower 3 smaller than that in the normal operation mode, as in the above-described air supply operation mode. Execute the air supply restriction operation mode. For example, as shown in FIG. 22, the air supply restriction operation mode is executed when the outdoor temperature is −16 ° C. or lower. In this air supply restriction operation mode, the indoor environment is maintained by restricting only the air supply when air supply should not be performed from the viewpoint of preventing the outdoor temperature from being too low and causing the equipment to fail. At the same time, since supply and exhaust are not stopped, generation of mold in the heat exchanger 5 is suppressed.

The switching unit 318 executes operation mode switching control for switching the above-described operation modes. Specifically, each operation mode is switched according to the outdoor temperature and the indoor temperature detected by the outdoor temperature sensor 321, the outdoor humidity sensor 322, the indoor temperature sensor 323, and the indoor humidity sensor 324.

According to this embodiment, the following effects are produced.
In the present embodiment, the ventilation device 1 is disposed in an air supply path 20 and an air supply path 20 that connect an outdoor air supply port 21 disposed on the outdoor side and an indoor air supply port 22 disposed on the indoor side. The air supply blower 2 that sends outside air to the indoor side, the exhaust path 30 that connects the indoor side exhaust port 31 disposed on the indoor side and the outdoor side exhaust port 32 disposed on the outdoor side, and the exhaust path 30 are disposed. Further, heat exchange is performed between the exhaust blower 3 that sends indoor air to the outdoor side, and the air that is disposed in the air supply path 20 and the exhaust path 30 and that flows through the air supply path 20 and the exhaust that flows through the exhaust path 30. And a control unit 301 that controls the rotational speed of the supply air blower 2 and the rotational speed of the exhaust air blower 3. Further, the control unit 301 sets the rotation speed of the supply air blower 2 to the normal rotation speed, the normal operation mode in which the rotation speed of the exhaust blower 3 is set to the normal rotation speed, and the rotation speed of the supply air blower 2 to the normal rotation speed. The exhaust mode is smaller than that in the operation mode, and the exhaust fan 3 is rotated at a normal rotation speed. The supply fan 2 is rotated at a normal rotation speed, and the exhaust fan 3 is rotated. An air supply operation mode in which the number is made smaller than that in the normal operation mode, and a switching unit 318 for switching each operation mode according to the outdoor temperature and the indoor temperature are included.

As described above, the normal operation mode, the exhaust operation mode, the air supply operation mode, the strong exhaust operation mode, the first switching operation mode, the second switching operation mode, the air supply restriction operation mode, Is configured to switch according to the outdoor temperature and the indoor temperature. Thereby, since the most effective ventilation system can be executed according to the outdoor temperature and the indoor temperature, the indoor environment can be improved. Moreover, since supply and exhaust always circulate in the heat exchanger 5 without stopping supply or exhaust, generation of mold in the heat exchanger 5 can be suppressed.

Conventionally, ventilators equipped with heat exchangers are known as ventilators for improving the indoor environment. Usually, since the indoor environment is better than the outdoor environment, the indoor environment is improved by performing heat exchange between the supply air and the exhaust air by the ventilation device.

By the way, when the indoor environment is worse than the outdoor environment, if the heat exchange is performed between the supply air and the exhaust air by the ventilation device, the indoor environment is deteriorated. In view of this, for example, a ventilator has been proposed that regulates the outdoor air cooling operation in which outdoor air having a lower temperature than indoors is introduced at night in the summer, etc., according to the temperature difference between the outdoor temperature and the indoor temperature.

However, in the conventional ventilator, when the temperature difference between the outdoor temperature and the indoor temperature is larger than a predetermined value, at least one of the air supply path and the exhaust path is switched to a bypass path not via a heat exchanger, and the above temperature difference Is smaller than the predetermined value, the supply air blower and the exhaust blower are stopped. Therefore, as a result of causing a state in which the supply air and the exhaust gas do not flow through the heat exchanger, problems such as generation of mold in the heat exchanger have occurred.

This embodiment aims to provide a ventilator that can improve the indoor environment while protecting the heat exchanger, and can provide the ventilator as described above.

In the present embodiment, when the indoor temperature is 14 ° C. or lower and the outdoor temperature is higher than the indoor temperature, the air supply operation mode is switched. When the indoor temperature is 26 ° C. or higher and the outdoor temperature is lower than the indoor temperature, the exhaust operation mode is switched. By these, the above-mentioned effect can be acquired more reliably.

In this embodiment, the outdoor temperature sensor 321 and the indoor temperature sensor 323 are provided, and each operation mode is switched according to the outdoor temperature and the indoor temperature detected by the outdoor temperature sensor 321 and the indoor temperature sensor 323. Thereby, switching to each operation mode according to the detected temperature can be automatically controlled, and the above-described effects can be obtained more reliably.

In this embodiment, an outdoor humidity sensor 322 and an indoor humidity sensor 324 are provided. In the above example, switching to each operation mode is performed according to the outdoor temperature and the indoor temperature, but the outdoor temperature and humidity detected by the outdoor temperature sensor 321, the outdoor humidity sensor 322, the indoor temperature sensor 323, and the indoor humidity sensor 324, and Each operation mode can be switched according to the indoor temperature and humidity. Thereby, switching to each operation mode according to the detected temperature and humidity can be automatically controlled, and the above-described effects can be obtained more reliably.

Note that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within a scope in which the object of the present invention can be achieved are included in the present invention.

<Fifth embodiment>
In the fifth embodiment, the ventilation device 1 includes a humidity exchanger 500 (see FIG. 23) that also functions as the heat exchanger 5 and an electrostatic atomizer 600 (see FIGS. 24 and 25).

The humidity exchanger 500 is disposed in the air supply path 20 and the exhaust path 30. The humidity exchanger 500 exchanges humidity by exchanging water vapor through a moisture permeable membrane between the supply air that flows through the supply passage 20 and the exhaust that flows through the exhaust passage 30. The humidity exchanger 500 includes an air supply circulation unit 520 through which the air in the air supply path 20 circulates and an exhaust circulation part 530 through which the air in the exhaust path 30 circulates (see FIG. 23). That is, in the humidity exchanger 500, the supply air circulation part 520 and the exhaust gas circulation part 530 are positioned so as to be in contact with each other through the moisture permeable membrane, and by transferring water vapor in the air that circulates between the inside and the other, The humidity of the supply air is adjusted.

The humidity exchanger 500 of this example is configured to function also as a heat exchanger that performs heat exchange. That is, in order to obtain a heat exchange function, a rectangular heat exchange sheet capable of exchanging the total heat is laminated with a plurality of ribs extending in the short direction of the heat exchange sheet, thereby being a rectangular parallelepiped. It is formed in a shape. The heat exchange sheet is made of paper, for example. In the humidity exchanger 500, the air supply path 20 and the exhaust path 30 are alternately and independently formed in the stacking direction of the heat exchange sheets via the heat exchange sheets.
The functional unit as a heat exchanger in the humidity exchanger 500 may be arranged so as to be positioned in series with respect to the functional unit related to humidity exchange and the air circulation, or both functions of the moisture permeable membrane and the heat exchange sheet are provided. It can also comprise so that humidity exchange and heat exchange may be performed over the whole area | region regarding the distribution | circulation of air by the diaphragm which serves as both.

The above-described air supply / circulation portion 520 of the humidity exchanger 500 includes an air supply inlet 51 formed at the upper portion on one end side in the longitudinal direction (left-right direction in FIG. 23) and an air supply outlet formed at the side surface on the other end side. 52 is a flow path of air to and from 52. Moreover, the exhaust circulation part 530 of the humidity exchanger 500 is an air flow path between the exhaust inlet 53 formed in the lower part on the other end side and the exhaust outlet 54 formed on the side surface on the one end side. . That is, the air supply / circulation part 520 of the humidity exchanger 500 constitutes a part of the air supply path 20. Similarly, the exhaust circulation part 530 of the humidity exchanger 500 constitutes a part of the exhaust path 30. Thereby, the flow of the supply air in the supply air path 20 and the flow of the exhaust gas in the exhaust path 30 become an opposite flow.

In the fifth embodiment, an electrostatic atomizer 600 (see FIGS. 24 and 25) that discharges electrostatic mist is disposed on the downstream side of the air supply / circulation part 520 of the humidity exchanger 500. In FIG. 23, a position P indicated by a rectangle shown in FIG. 23 is a position where the electrostatic atomizer 600 is disposed. As can be easily understood from the figure, the electrostatic atomizer 600 in this example is on the downstream side of the air supply passage 20 after the air supply circulation section 520 of the humidity exchanger 500, and in particular, the air supply passage 20. It arrange | positions in the indoor side air inlet 22 vicinity part from which air is discharge | released indoors. For this reason, the electrostatic mist generated in the electrostatic atomizer 600 is efficiently discharged indoors from the indoor air supply port 22.

FIG. 24 is a diagram illustrating an installation mode of the electrostatic atomizer 600 in the ventilation device of FIG.
24 is attached to a side wall 2d of an air supply casing 2c that covers the multi-blade impeller 2b of the air supply blower 2 and discharges the air supply toward the indoor air supply port 22. ing. This attachment position is a position close to the indoor air supply port 22 of the side wall 2d, and the attachment attitude is such that each electrostatic

mist discharge pin

601 and 601 of the electrostatic atomizer 600 has a side wall of the air supply casing 2c. In this mode, the ink is discharged vertically from 2d toward the inside (that is, inside the air supply path 20).

25 is a diagram for explaining the configuration of the electrostatic atomizer shown in FIG. 24, and is a cross-sectional view taken along line AA of FIG. In FIG. 25, corresponding parts to those in FIG. 24 are denoted by the same reference numerals.
The electrostatic atomizer 600 of the present example includes nine electrostatic mist discharge pins 601 as can be easily seen from FIG. These electrostatic mist discharge pins 601 and 601 are housed in an insulating case 602 on the base side and sealed with an insulating sealing plate 603. A holding plate 604 provided with a through hole corresponding to each electrostatic

mist discharge pin

601 and 601 is provided on the sealing plate 603, and the position of each electrostatic

mist discharge pin

601 and 601 is provided by this holding plate 604. And the posture is maintained. Further, the tip (pointed end) side of each electrostatic

mist discharge pin

601, 601 protrudes substantially horizontally from the case 602 into the air supply path 20 that is the outside thereof.

An electrode plate 605 is provided on the bottom of the case 602 so that the bases of the electrostatic mist discharge pins 601 and 601 are in common contact. An electrode pin 606 protrudes from the electrode plate 605 through the bottom of the case 602. A negative high voltage from a booster 608 operating under the control of the main circuit board 607 is applied to the electrode pin 606 through a cable 609. The negative high voltage is, for example, about −4 KV. The main circuit board 607 is a functional unit that comprehensively manages the operation in various modes in response to a user operation on the ventilation device 1 of the present embodiment or in response to a timer operation of the own device. It is. The previously described control unit is also formed on the main circuit board 607.

In the present embodiment, the ventilation device 1 includes an air supply fan 2 that supplies outside air into the room, an air supply path 20 that guides air into the room using the air supply fan 2, an exhaust fan 3 that exhausts indoor air, A part of the air supply path 20 is configured and supplied to exchange humidity between the exhaust path 30 that guides air to the outside by the exhaust blower 3 and the air flowing through the air supply path 20 and the air flowing through the exhaust path 30. A humidity exchanger 500 including an air supply circulation unit 520 through which air flows and an exhaust circulation unit 530 that constitutes a part of the exhaust path 30 and through which the exhausted air flows, and the supply of the humidity exchanger 300 in the air supply path 20 And an electrostatic atomizer 600 that is disposed downstream of the air circulation unit 520 and discharges electrostatic mist. In addition, the electrostatic atomizer 600 has an electrostatic mist release pin 601 that adsorbs water vapor in the air whose humidity has been exchanged by the humidity exchanger 500 and releases an electrostatic mist when a negative high voltage is applied from the outside. Constructed including.

As described above, in the ventilator 1 according to the fifth embodiment, the humidity is exchanged through the air supply / circulation unit 520 of the humidity exchanger 500, and air in which the humidity is appropriately maintained flows out even in the winter when the humidity of the outside air is low. An electrostatic atomizer 600 is disposed in the air supply path 20 near the indoor air supply port 22. For this reason, each electrostatic mist discharge |

release pin

601 and 601 of the electrostatic atomizer 600 is exposed to the air flow in which humidity was maintained in the downstream of the air supply distribution | circulation part 520 of the humidity exchanger 500, thereby water vapor. To adsorb. In this state, when a negative high voltage is applied from the booster 608 to the electrostatic mist discharge pins 601 and 601, the electrostatic mist is discharged.
Therefore, in the ventilator 1 of the fifth embodiment, the electrostatic mist is appropriately released into the room with a simple configuration that does not require a Peltier element for generating water or an electric circuit for applying a voltage to the element. Can be made. Further, since there is no need to provide a liquid reservoir for storing a liquid such as a functional liquid or water, handling is easy without inconvenience such as water supply. Furthermore, since the spark phenomenon due to arc discharge is unlikely to occur, the risk of ozone generation is minimal.

In recent years, improvements related to heat exchangers for air conditioning that can recover temperature and humidity during ventilation have progressed. A proposal (1) of a heat exchanger and a heat exchange ventilator that can realize high humidity exchange efficiency at low cost has also been made.

Incidentally, the electrostatic atomization phenomenon in which water is split from the tip of a pin to which a high voltage is applied and electrostatic mist is generated is well known. This electrostatic mist is negatively charged fine particles having a particle size of picometer to nanometer, and exhibits effects such as deodorization, sterilization, and antiallergen. In anticipation of such an effect, a proposal (2) in which various devices for air conditioning are provided with electrostatic atomization means has also been made.

For example, it is equipped with electrostatic atomization means that generates liquid phase water from the gas phase moisture in the air guided to the ventilation path, electrostatically atomizes this water, and discharges it into the room. An air conditioner that controls the operation of the electrostatic atomizer in accordance with the output of the sensor to be detected has been proposed (3).

In addition, a ventilation facility has been proposed in which an electrostatic atomizer that generates charged fine particle water from water stored in a water tank is provided at an air supply port for blowing air into the room.
Furthermore, a mist releasing pin that can release mist without replenishing an aqueous solution has been proposed (4).

However, in the heat exchanger and heat exchange ventilator of the proposal (1), the viewpoint of mounting the electrostatic atomizing function unit is not shown.
On the other hand, the electrostatic atomization means in the air conditioner of proposal (2) requires a Peltier element for water generation and an electric circuit for applying a voltage to this element.
Moreover, in the electrostatic atomizer in the ventilation equipment of the proposal (3), it is essential to have a liquid reservoir for storing a liquid such as a functional liquid or water. Accordingly, it is necessary to replenish the liquid reservoir with a liquid such as a functional liquid or water. However, even if it is configured to automatically issue an alarm prompting refilling, the liquid refilling operation is troublesome for the user. Moreover, a spark phenomenon is observed in the arc discharge generated by the atomizing means, and ozone is easily generated.
Further, in the proposal (4), various improvements on the mist discharge pin itself are disclosed, but no proposal has been made regarding an aspect of applying the mist discharge pin to a ventilator or the like.

The fifth embodiment has been made in view of the situation as described above, and does not require a Peltier element for water generation or an electric circuit for applying a voltage to this element. For the purpose of providing a ventilator equipped with an electrostatic atomizing function unit that is easy to handle and has a minimal risk of ozone generation, such a ventilator can be provided as described above.

DESCRIPTION OF SYMBOLS 1 Ventilation device 2 Supply air blower 3 Exhaust air blower 5 Heat exchanger 7 Static voltage application device 8 Supply air filter moving device (filter moving device)
9 Bypass path 20 Air supply path 21 Outdoor side air inlet 22 Indoor side air inlet 24a Fin 24a (dust removing means)
DESCRIPTION OF SYMBOLS 30 Exhaust path 31 Indoor side exhaust port 32 Outdoor side exhaust port 41 Air supply filter 42 Exhaust filter 81 Motor 100 Damper (switching means)
301 Control Unit 302 Illuminance Sensor 303 Dust Sensor 318 Switching Unit 500 Humidity Exchanger 600 Electrostatic Atomizer 601 Electrostatic Mist Release Pin

Claims

An air supply path connecting an outdoor air supply port arranged on the outdoor side and an indoor air supply port arranged on the indoor side;
An air supply blower arranged in the air supply path and sending outside air to the indoor side;
An exhaust path connecting an indoor exhaust port disposed on the indoor side and an outdoor exhaust port disposed on the outdoor side;
An exhaust blower arranged in the exhaust path and sending indoor air to the outdoor side;
A heat exchanger that is disposed in the air supply path and the exhaust path and exchanges heat between the air that flows through the air supply path and the exhaust that flows through the exhaust path;
An exhaust filter that is disposed upstream of the heat exchanger in the exhaust path and collects dust contained in the exhaust;
A ventilation apparatus comprising: a bypass path connecting the exhaust path upstream of the exhaust filter and the exhaust path downstream of the heat exchanger.
The ventilator according to claim 1, further comprising a dust removing means disposed on a surface of the exhaust filter on the indoor exhaust port side to remove dust attached to the exhaust filter.
The ventilator according to claim 1 or 2, wherein an inlet of the bypass path opens toward a surface direction of the exhaust filter.
A switching means for switching between exhaust through the heat exchanger and exhaust through the bypass path;
The ventilator according to any one of claims 1 to 3, wherein the switching means performs exhaust through the heat exchanger for a predetermined time and then switches to exhaust through the bypass path.
An air supply filter that is disposed on the outdoor air supply port side of the air supply path and collects dust contained in outside air flowing into the air supply path;
A filter moving device for moving the air supply filter to the outdoor side exhaust port side of the exhaust path;
A static voltage application device for applying a static voltage to the air supply filter;
A control unit for controlling the air supply blower, the exhaust blower, the filter moving device, and the static voltage application device, and
The control unit moves the air supply filter to the outdoor side exhaust port side of the exhaust path by the filter moving device, stops application of static voltage to the air supply filter by the static voltage application device, and at least The ventilator according to any one of claims 1 to 4, wherein a filter cleaning control for removing dust collected by the air supply filter is executed by driving the exhaust fan.
The filter moving device includes a motor as a drive source,
The ventilation according to claim 5, wherein the control unit removes dust collected by the air supply filter by vibrating the air supply filter by controlling the motor during execution of the filter cleaning control. apparatus.
The ventilator according to claim 5 or 6, wherein the control unit executes the filter cleaning control every predetermined time.
An illuminance sensor that detects ambient illuminance, and a dust sensor that detects indoor dust,
The air supply blower and the exhaust blower are operated according to a control signal from the control unit,
The control unit controls the operation of the ventilation device according to the outputs of the illuminance sensor and the dust sensor,
The control unit is not a cleaning mode in which the exhaust blower is operated at a high output in order to discharge dust adhering to the air supply filter and / or the exhaust filter that removes dust from the outside air to be supplied, and is not the cleaning mode. In this case, when the output of the dust sensor exceeds a predetermined value, at least one of the two operation modes of the exhaust air blower and / or the strong air supply mode of operating the air supply blower at a high output, and When the illuminance detected by the illuminance sensor is equal to or lower than a predetermined level, the control unit is configured to switch between the silent mode in which the exhaust blower and the air supply blower are operated at a low output. The ventilator according to any one of claims 5 to 7, wherein operation in a selectable operation mode is prohibited.
The ventilator according to claim 8, wherein the controller performs the operation in the silent mode when the illuminance detected by the illuminance sensor is below a predetermined level.
The control unit controls the rotation speed of the supply air blower and the rotation speed of the exhaust blower,
A normal operation mode in which the rotation speed of the supply air blower is set to a normal rotation speed, and the rotation speed of the exhaust blower is set to a normal rotation speed;
An exhaust operation mode in which the rotation speed of the air supply blower is made smaller than that in the normal operation mode, and the rotation speed of the exhaust blower is a normal rotation speed,
An air supply operation mode in which the rotation speed of the air supply blower is set to a normal rotation speed, and the rotation speed of the exhaust air blower is made smaller than that in the normal operation mode;
The ventilator according to any one of claims 5 to 9, further comprising a switching unit that switches the operation modes according to an outdoor temperature and an indoor temperature.
A supply air distribution part that constitutes a part of the supply air path and exchanges air to exchange humidity between the air flowing through the supply air path and the air flowing through the exhaust air path, A humidity exchanger that functions as the heat exchanger;
An electrostatic atomizer disposed on the downstream side of the air supply passage of the humidity exchanger after the air supply circulation section, and discharges electrostatic mist.
The electrostatic atomizer has an electrostatic mist discharge pin that adsorbs water vapor in the air whose humidity has been exchanged by the humidity exchanger and discharges an electrostatic mist when a negative high voltage is applied from the outside. The ventilator according to any one of 1 to 10.