Ventilator

Abstract

To provide a ventilator which can prevent dust captured by an air filter from flowing into a room by a supply airflow.SOLUTION: A ventilator 100 comprises: a heat exchanger 12 having a supply air passage for connecting an outdoor-side suction face 12a and an indoor-side discharge face 12b, and an exhaust passage for connecting an indoor-side suction face 12c and an outdoor-side discharge face 12d; an air filter 30 for covering the outdoor-side suction face 12a, the indoor-side discharge face 12b, the indoor-side suction face 12c and the outdoor-side discharge face 12d of the heat exchanger 12, and capturing dust in a supply airflow and an exhaust airflow; and an indoor-side discharge face partitioning plate 36b provided in a position in which the passage of the supply airflow in a dust adhesion region of the air filter 30 is blocked at the indoor-side discharge face 12b of the heat exchanger 12 when making the dust adhesion region of the air filter 30 which has captured the dust circulate and move to the indoor-side discharge face 12b of the heat exchanger 12 at the outdoor-side suction face 12a and the indoor-side suction face 12c of the heat exchanger 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a ventilation device. [Background technology]

[0002] Conventionally, in order to reduce the energy used by air conditioners and provide comfortable air conditioning, a heat exchange type ventilation system has been used that exchanges heat between supply air introduced from outside the room to the room by an intake fan and exhaust air discharged from inside the room to the outside by an exhaust fan, and guides the supply air into the room with a reduced temperature difference with the exhaust air.

[0003] In such a ventilation device, an air filter is provided to prevent the effective heat exchange surface area of ​​the heat exchanger from being covered with dust and becoming smaller. The air filter removes dust that flows into the heat exchanger. Since the dust is captured by the air filter, the air filter becomes clogged over the course of operation. Since clogging affects the lifespan and ventilation performance of the air filter, it is necessary to clean the air filter regularly.

[0004] Therefore, for example, the ventilation device of Patent Document 1 is provided with a separation mechanism that separates the dust captured by the air filter from the air filter. The air filter is arranged to surround the heat exchanger and is provided so as to be able to circulate to the heat exchanger. The separation mechanism has a scraping part and a moving mechanism. The moving mechanism moves the position of the air filter relative to the scraping part. The scraping part is arranged in the downstream exhaust flow path, or is formed by at least a part of the wall surface of the downstream exhaust flow path. With the above configuration, the moving mechanism can easily make the dust separated from the air filter exist in the downstream exhaust flow path by simply moving the air filter that has captured the dust to the scraping part. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2012-52692 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the invention described in Patent Document 1, the air filter is disposed so as to surround the heat exchanger, and therefore it is necessary to move the air filter so that it is positioned in the downstream air intake passage with the surface that captured the dust facing away from the heat exchanger. In this case, if the separation mechanism is not able to completely separate the dust captured by the air filter, there is a risk that the dust captured by the air filter will flow into the room with the intake air flow.

[0007] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a ventilation device that can prevent dust captured on an air filter from flowing into a room via the intake air flow. [Means for solving the problem]

[0008] The ventilation device according to the present disclosure has an air supply passage connecting an outdoor suction surface that draws in outdoor air and an indoor discharge surface that blows out outdoor air, and an exhaust passage connecting an indoor suction surface that draws in indoor air and an outdoor discharge surface that discharges indoor air, and is characterized in having a heat exchanger that exchanges heat between the supply air flowing through the air supply passage and the exhaust air flowing through the exhaust passage, an air filter that covers the outdoor suction surface, the indoor discharge surface, the indoor suction surface, and the outdoor discharge surface of the heat exchanger and captures dust in the supply air flow and the exhaust air flow of the heat exchanger, an electric motor that moves the air filter in a circulating manner relative to the heat exchanger, and a partition plate for the indoor discharge surface that is provided in a position that blocks the supply air flow from passing through the dust adhesion area of ​​the air filter on the indoor discharge surface of the heat exchanger when the dust adhesion area of ​​the air filter that has captured dust on the outdoor suction surface and the indoor suction surface of the heat exchanger is moved in a circulating manner to the indoor discharge surface of the heat exchanger, and an adhesion area. Effect of the Invention

[0009] According to the present disclosure, it is possible to provide a ventilation device capable of preventing dust trapped in an air filter from flowing into a room through the intake air flow. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic diagram of a ventilation device according to a first embodiment. [Diagram 2] FIG. 1 is a perspective view of a heat exchanger according to a first embodiment. [Diagram 3] 1 is a schematic diagram of the periphery of a heat exchanger according to a first embodiment. [Figure 4] FIG. 2 is a perspective view of the heat exchanger of the first embodiment as viewed from the directions of the outdoor-side discharge surface and the indoor-side discharge surface. [Diagram 5] FIG. 2 is a perspective view of the heat exchanger of the first embodiment as viewed from the indoor-side suction surface and the outdoor-side suction surface directions. [Figure 6] 2 is a block diagram showing an example of the configuration of a control unit according to the first embodiment. FIG. [Figure 7] FIG. 11 is a schematic diagram of a ventilation device according to a second embodiment. [Figure 8] FIG. 11 is a schematic diagram of the periphery of a heat exchanger according to a second embodiment. [Figure 9] FIG. 11 is a perspective view of a heat exchanger according to a second embodiment, as viewed from the directions of an outdoor-side discharge surface and an indoor-side discharge surface. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The following describes a ventilation device 100 according to an embodiment with reference to the drawings. The following embodiments are merely examples, and the embodiments can be appropriately combined and modified. In the drawings, the same components are given the same reference numerals.

[0012] The coordinate axes of the XYZ Cartesian coordinate system are shown in the figure. In the schematic diagram of the ventilation device 100 of the first embodiment shown in FIG. 1, the stacking direction of the heat exchanger 12 is the Z-axis direction, the direction against gravity is the +Z-axis direction, and the direction of gravity is the -Z-axis direction. The longitudinal direction of the main body 10 is the Y-axis direction, the direction from the outside to the inside of the room is the +Y-axis direction, and the direction from the inside to the outside of the room is the -Y-axis direction. The short side direction of the main body 10 is the X-axis direction, the direction from the outdoor suction port 14 to the outdoor discharge port 20 is the +X-axis direction, and the direction from the outdoor discharge port 20 to the outdoor suction port 14 is the -X-axis direction.

[0013] Embodiment 1 A ventilation device 100 in the first embodiment will be described with reference to Fig. 1. Fig. 1 is a schematic diagram of the ventilation device 100 in the first embodiment. In Fig. 1, solid arrows indicate the flow of the intake airflow, and dashed arrows indicate the flow of the exhaust airflow. As shown in Fig. 1, the ventilation device 100 includes a main body 10, a heat exchanger 12, an intake air blower 26, an exhaust air blower 28, an air filter 30, an electric motor 32, a separation mechanism 34, a partition plate 36, and a control unit 38.

[0014] The main body 10 has a rectangular parallelepiped shape made of, for example, sheet metal, and constitutes a housing of the ventilator 100. The main body 10 is installed in a concealed state, for example, above the ceiling of a room.

[0015] The main body 10 is provided with an outdoor suction port 14, an indoor discharge port 16, an indoor suction port 18, an outdoor discharge port 20, an intake air duct 22, and an exhaust air duct 24. The outdoor suction port 14 is an opening for drawing in outdoor air. The indoor discharge port 16 is an opening for blowing out the drawn-in outdoor air into the room. The indoor suction port 18 is an opening for drawing in indoor air. The outdoor discharge port 20 is an opening for discharging the drawn-in indoor air to the outside. The outdoor discharge port 20 and the outdoor suction port 14 are arranged vertically on one end surface of the main body 10 in the longitudinal direction. The indoor discharge port 16 and the indoor suction port 18 are arranged vertically on the other end surface opposite to the one end surface of the main body 10 in the longitudinal direction.

[0016] The supply air duct 22 is an air duct for supplying outside air to the room, and connects the outdoor air inlet 14 and the indoor air outlet 16. The exhaust air duct 24 is an air duct for discharging indoor air to the outside, and connects the indoor air inlet 18 and the outdoor air outlet 20. The supply air duct 22 and the exhaust air duct 24 are formed inside the main body 10. The supply air duct 22 connects the outdoor air inlet 14 and the indoor air outlet 16 via the heat exchanger 12, and the exhaust air duct 24 connects the indoor air inlet 18 and the outdoor air outlet 20 via the heat exchanger 12.

[0017] A heat exchanger 12 is provided inside the main body 10. The heat exchanger 12 has an outdoor suction surface 12a, an indoor discharge surface 12b, an indoor suction surface 12c, an outdoor discharge surface 12d, an air supply passage 22a, and an exhaust passage 24a. The outdoor suction surface 12a is an opening for drawing in outside air from the outdoor suction port 14. The indoor discharge surface 12b is an opening for blowing out the drawn-in outside air to the indoor discharge port 16. The indoor suction surface 12c is an opening for drawing in indoor air from the indoor suction port 18. The outdoor discharge surface 12d is an opening for discharging the drawn-in indoor air to the outdoor discharge port 20.

[0018] FIG. 2 is a perspective view of the heat exchanger 12 of the first embodiment. The heat exchanger 12 is a heat exchanger 12 in which a large number of flat air supply passages 22a, which are made of a corrugated sheet in which corrugated paperboard is bonded to a flat paperboard, and a flat air exhaust passage 24a, which is made of a corrugated sheet in which corrugated paperboard is bonded to a flat paperboard, are alternately stacked. The air supply passage 22a is provided on the air supply air passage 22, and connects the outdoor suction surface 12a and the indoor discharge surface 12b. The air exhaust passage 24a is provided on the air exhaust air passage 24, and connects the indoor suction surface 12c and the outdoor discharge surface 12d. The air supply passage 22a and the air exhaust passage 24a are formed independently of each other in the heat exchanger 12, and are provided in a state where they are perpendicular to each other. With this configuration, the heat exchanger 12 can exchange heat between the air supply flow passing through the air supply passage 22a and the air exhaust flow passing through the air exhaust passage 24a.

[0019] The supply air blower 26 generates a supply air flow from the inlet end to the outlet end of the supply air duct 22, i.e., a supply air flow from the outdoor inlet 14 to the indoor outlet 16. The supply air blower 26 has, for example, a casing, a fan body such as a sirocco fan housed in the casing, and a fan motor for rotating the fan body. The supply air blower 26 is provided on the indoor outlet 16 side of the supply air duct 22, specifically between the heat exchanger 12 and the indoor outlet 16 in the supply air duct 22. The supply air blower 26 rotates the fan body by the fan motor, thereby generating a negative pressure that discharges the air sucked from the outside into the room. This generates an air flow in the supply air duct 22, i.e., a supply air flow. The fan motor may have a rotation speed switching mechanism for adjusting the rotation speed of the fan body.

[0020] The exhaust fan 28 generates an exhaust flow from the inlet end to the outlet end of the exhaust air duct 24, i.e., an exhaust flow from the indoor inlet port 18 to the outdoor outlet port 20. The exhaust fan 28 has, for example, a casing, a fan body such as a sirocco fan housed in the casing, and a fan motor for rotating the fan body. The exhaust fan 28 is provided on the outdoor outlet port 20 side of the exhaust air duct 24, specifically between the heat exchanger 12 and the outdoor outlet port 20 in the exhaust air duct 24. The exhaust fan 28 rotates the fan body by the fan motor, thereby generating a negative pressure that discharges the air sucked from the room to the outside. This generates an air flow in the exhaust air duct 24, i.e., an exhaust flow. The fan motor may have a rotation speed switching mechanism for adjusting the rotation speed of the fan body.

[0021] The air filter 30 is a filter for capturing dust in the intake air flow from the outdoor suction surface 12a to the indoor discharge surface 12b and in the exhaust air flow from the indoor suction surface 12c to the outdoor discharge surface 12d. Here, the dust is not limited to dust and dirt, but also includes insects that may reduce the effective heat exchange surface area of ​​the heat exchanger 12. The air filter 30 is configured to surround and cover the outdoor suction surface 12a, the indoor discharge surface 12b, the indoor suction surface 12c, and the outdoor discharge surface 12d. In other words, the air filter 30 is configured to surround the heat exchanger 12. In the following, the heat exchanger 12 side of the air filter 30 is referred to as the "inside", and the opposite side of the air filter 30 to the heat exchanger 12 side is referred to as the "outside". The air filter 30 is provided so as to be circulated around the heat exchanger 12 by the electric motor 32. The air filter 30 has a continuous shape with no ends in the circulation direction.

[0022] The electric motor 32 is an electric motor 32 for circulating the air filter 30 relative to the heat exchanger 12. For example, the position where the air filter 30 covers the indoor suction surface 12c of the heat exchanger 12 is area A, the position where the air filter 30 covers the outdoor suction surface 12a is area B, the position where the air filter 30 covers the outdoor discharge surface 12d is area C, and the position where the air filter 30 covers the indoor discharge surface 12b is area D. At this time, the electric motor 32 circulates the air filter 30 relative to the heat exchanger 12 by moving the air filter 30 in order from area A to area D and then returning to area A.

[0023] The separation mechanism 34 is a cleaning brush for separating dust captured by the air filter 30. The separation mechanism 34 is provided so as to come into contact with the air filter 30 covering the outdoor-side discharge surface 12d of the heat exchanger 12. When the motor 32 circulates the air filter 30, the cleaning brush comes into contact with the air filter 30 so as to catch the dust from the air filter 30, thereby removing the dust captured by the air filter 30.

[0024] The partition plate 36 is a shield plate that restricts air passing through the air filter 30. The partition plate 36 in this embodiment includes an outdoor suction surface partition plate 36a, an indoor discharge surface partition plate 36b, an indoor suction surface partition plate 36c, and an outdoor discharge surface partition plate 36d. The outdoor suction surface partition plate 36a is provided at a position where the air filter 30 covers the outdoor suction surface 12a of the heat exchanger 12 and blocks the supply air flow from passing through the air filter 30. The indoor discharge surface partition plate 36b is provided at a position where the air filter 30 covers the indoor discharge surface 12b of the heat exchanger 12 and blocks the supply air flow from passing through the air filter 30. The indoor suction surface partition plate 36c is provided at a position where the air filter 30 covers the indoor suction surface 12c of the heat exchanger 12, so as to block the exhaust air flow from passing through the air filter 30. The outdoor discharge surface partition plate 36d is provided at a position where the air filter 30 covers the outdoor discharge surface 12d of the heat exchanger 12, so as to block the exhaust air flow from passing through the air filter 30. The partition plate 36 in FIG. 1 is located inside the air filter 30. The thick solid line indicates the position where the partition plate 36 is provided, and the thin broken line indicates the position where the partition plate 36 is not provided. The intake air flow and the exhaust air flow cannot pass through the position where the partition plate 36 is provided, so they pass through the position where the partition plate 36 is not provided. In other words, the air filter 30 blocked by the partition plate 36 does not capture dust. As described above, the air filter 30 covers the outdoor suction surface 12a and the indoor suction surface 12c of the heat exchanger 12 and captures dust. Hereinafter, the area of ​​the air filter 30 that captures dust on the outdoor suction surface 12a and the indoor suction surface 12c of the heat exchanger 12 is referred to as the "dust adhesion area". The dust adhesion area of ​​the air filter 30 is moved to a position covering the indoor discharge surface 12b of the heat exchanger 12 by the electric motor 32. The indoor discharge surface partition plate 36b is provided at a position that blocks the intake air flow from passing through the dust adhesion area of ​​the air filter 30 that has moved to a position covering the indoor discharge surface 12b. With the above configuration, it is possible to prevent the intake air flow from passing through the air filter 30 that has captured dust between the heat exchanger 12 and the indoor discharge port 16.

[0025] The partition plate 36a for the outdoor suction surface is provided at a position where the supply air flow is prevented from passing through the air filter 30 in a part of the air filter 30 covering the outdoor suction surface 12a of the heat exchanger 12. The partition plate 36c for the indoor suction surface is provided at a position where the exhaust air flow is prevented from passing through the air filter 30 in a part of the air filter 30 covering the indoor suction surface 12c of the heat exchanger 12. In this case, the partition plate 36b for the indoor discharge surface is provided at a position where the supply air flow is prevented from passing through the air filter 30 in a part of the air filter 30 covering the indoor discharge surface 12b of the heat exchanger 12. An example is shown below. FIG. 3 is a schematic diagram of the periphery of the heat exchanger 12 in the first embodiment. In FIG. 3, the solid arrow indicates the direction in which the air filter 30 circulates when the motor 32 is driven. Furthermore, A to D shown in Figure 3 are numbers indicating areas A to D in which the above-mentioned air filters 30 are located, with A being the position where the air filter 30 covers the indoor suction surface 12c of the heat exchanger 12, B being the position where the air filter 30 covers the outdoor suction surface 12a of the heat exchanger 12, C being the position where the air filter 30 covers the outdoor discharge surface 12d of the heat exchanger 12, and D being the position where the air filter 30 covers the indoor discharge surface 12b of the heat exchanger 12.

[0026] The four areas A to D are further divided into two, a front half and a rear half, with respect to the circulation direction of the air filter 30. In the area A, the indoor suction surface partition plate 36c is provided at a position that blocks the exhaust air flow from passing through the air filter 30 located in the rear half. In the area B, the outdoor suction surface partition plate 36a is provided at a position that blocks the intake air flow from passing through the air filter 30 located in the rear half. In the area C, the outdoor discharge surface partition plate 36d is provided at a position that blocks the exhaust air flow from passing through the air filter 30 located in the rear half. In the area D, the indoor discharge surface partition plate 36b is provided at a position that blocks the intake air flow from passing through the air filter 30 located in the front half. With the above configuration, in the area A, the exhaust air flow passes through the air filter 30 located in the front half. In the area B, the intake air flow passes through the air filter 30 located in the front half. The area of ​​the air filter 30 that captures dust in the front half of the areas A and B becomes a dust adhesion area. Moreover, in area D, unlike areas A to C, the intake air flow passes through the air filter 30 located in the rear half. The air filter 30 that has captured dust in the front half of areas A and B is moved to the front half of area D by the electric motor 32. At this time, in area D, since the indoor discharge surface partition plate 36b is provided in a position that blocks the air filter 30 located in the front half, it is possible to prevent the intake air flow from passing through the air filter 30 that has captured dust between the heat exchanger 12 and the indoor discharge port 16.

[0027] As described above, in the first embodiment, the outdoor suction surface partition plate 36a and the indoor suction surface partition plate 36c are provided at relatively different positions from the indoor discharge surface partition plate 36b. Specifically, the indoor discharge surface partition plate 36b is provided at a position that blocks the supply airflow from passing through the region of the air filter 30 through which the supply airflow and the exhaust airflow pass in areas A to C in area D, and the indoor suction surface partition plate 36c, the outdoor suction surface partition plate 36a, and the outdoor discharge surface partition plate 36d are provided at positions that block the supply airflow and the exhaust airflow from passing through the region of the air filter 30 through which the supply airflow passes in area D in areas A to C. Providing the partition plates 36 at relatively different positions means that, as described above, the partition plates 36 are provided at different positions so that the areas of the air filter 30 through which the intake air flow and the exhaust air flow pass in areas A to C are different from the area of ​​the air filter 30 through which the intake air flow passes in area D.

[0028] Furthermore, in area C, the exhaust air flow passes through the air filter 30 located in the front half of the area. At this time, the separation mechanism 34 is provided so as to come into contact with the air filter 30 located in the front half of the area C. This allows the dust removed from the air filter 30 by the separation mechanism 34 to be discharged outside the room by the exhaust air flow.

[0029] The control unit 38 controls the operation of the ventilation device 100. The control unit 38 also controls the intake air blower 26, the exhaust air blower 28, and the electric motor 32. In this embodiment, the control unit 38 is electrically connected to each of the intake air blower 26, the exhaust air blower 28, and the electric motor 32 by signal lines (not shown).

[0030] A remote controller 50 for a user to operate the ventilation device 100 is communicably connected to the control unit 38 via a remote controller communication transmission line 52. The remote controller 50 receives various commands from the user regarding the operation of the ventilation device 100 and transmits them to the control unit 38. For example, the remote controller 50 transmits an operation signal for starting or stopping the operation of the ventilation device 100 to the control unit 38. This operation signal is generated based on on / off operation information by the user's operation of the remote controller 50. The remote controller 50 also transmits a cleaning operation signal to the control unit 38 for moving the installation location of the air filter 30 for automatic cleaning. This cleaning operation signal is generated based on cleaning operation setting information by the user's operation of the remote controller 50. Furthermore, in the case where the fan motors of the intake air blower 26 and the exhaust air blower 28 are provided with a rotation speed switching mechanism, the remote controller 50 transmits a rotation speed signal for setting the rotation speed of each of the fan bodies of the intake air blower 26 and the exhaust air blower 28 to the control unit 38. This rotation speed signal is generated based on air volume setting information input by the user through the operation of the remote controller 50 .

[0031] FIG. 6 is a block diagram showing an example of the configuration of the control unit 38. As shown in FIG. 6, the control unit 38 has a control circuit 40, an intake fan drive circuit 42, an exhaust fan drive circuit 44, an electric motor drive circuit 46, and a remote controller communication circuit 48. The control circuit 40 is connected to each of the intake fan drive circuit 42, the exhaust fan drive circuit 44, the electric motor drive circuit 46, and the remote controller communication circuit 48. The intake fan drive circuit 42 is connected to the intake fan 26. The exhaust fan drive circuit 44 is connected to the exhaust fan 28. The electric motor drive circuit 46 is connected to the electric motor 32. The remote controller communication circuit 48 is connected to the remote controller 50. The control unit 38 is also provided with a power supply unit (not shown) that supplies power to each circuit.

[0032] The control circuit 40 receives an operation signal and a cleaning operation signal based on the operation content of the remote controller 50 via the remote controller communication transmission path 52 and the remote controller communication circuit 48, and determines the operation content of the remote controller 50. Based on the operation signal and the cleaning operation signal received from the remote controller 50, the control circuit 40 generates and transmits a drive command signal to the supply air blower drive circuit 42, a drive command signal to the exhaust air blower drive circuit 44, and a drive command signal to the electric motor drive circuit 46.

[0033] Next, the operation of the ventilation device 100 will be described. When the control unit 38 receives an operation signal for starting the operation of the ventilation device 100 from the remote controller 50 by the user's operation, the control unit 38 drives the supply air blower 26 and the exhaust air blower 28. As a result, the outside air sucked in from the outdoor air inlet 14 is supplied to the room from the indoor air outlet 16 through the supply air duct 22, and the indoor air sucked in from the indoor air inlet 18 is exhausted to the outside from the outdoor air outlet 20 through the exhaust air duct 24. At this time, the heat exchanger 12 exchanges heat between the supply air flow flowing through the supply air passage 22a and the exhaust air flow flowing through the exhaust air passage 24a. The air filter 30 is disposed at a position where the supply air flow and the exhaust air flow flowing into the heat exchanger 12 pass through, and captures dust contained in the supply air flow and the exhaust air flow, especially on the outdoor air inlet surface 12a and the indoor air inlet surface 12c of the heat exchanger 12. This removes dust that has entered heat exchanger 12. When control unit 38 receives an operation signal for stopping the operation of ventilation device 100 from remote controller 50 by a user's operation, control unit 38 stops the operation of intake air blower 26 and exhaust air blower 28.

[0034] Next, the cleaning operation of the air filter 30 will be described. First, the control unit 38 stops the operation of the intake air blower 26 and the exhaust air blower 28. Then, the control unit 38 operates the electric motor 32 to move the air filter 30 from the current area to the next area. That is, the air filter 30 located in area A moves to area B. At this time, the control unit 38 controls the electric motor 32 so that the entire surface of the air filter 30 located in area A moves to area B. The air filter 30 located in area A returns to area A by performing the above operation four times. The same applies to the air filters 30 located in areas B to D. That is, the air filter 30 moves in a circulating manner relative to the heat exchanger 12. By this movement, when the air filter 30 passes through area C, the dust captured by the air filter 30 is removed by the separation mechanism 34. This makes it possible to automatically clean the air filter 30, and prevents the air filter 30 from becoming clogged.

[0035] As described above, the air filter 30 located in the rear part of the areas A and B and blocked by the partition plate 36 needs to pass through the front part of the areas A and B by the circulating movement by the motor 32. At this time, if the intake air flow and the exhaust air flow are generated, the air filter 30 blocked by the partition plate 36 in the areas A and B captures dust. Then, when the air filter 30 moves to the area D, the intake air flow causes dust to flow into the room. Therefore, when the air filter 30 is moved by the motor 32, the control unit 38 stops the operation of the intake air blower 26 and the exhaust air blower 28. This allows the intake air flow and the exhaust air flow to pass through the air filter 30 located in the front part of the areas A and B and not passed by the intake air flow and the exhaust air flow, preventing the air filter 30 from capturing dust.

[0036] After the air filter 30 has been circulated by the motor 32, the control unit 38 drives the exhaust fan 28. The exhaust flow generated by the exhaust fan 28 discharges the dust removed by the separation mechanism 34 to the outside of the room through the outdoor discharge port 20. The exhaust fan 28 may be driven in a normal ventilation operation in which it is operated together with the intake fan 26. This completes the cleaning operation of the air filter 30.

[0037] As described above, the control unit 38 has a cleaning operation mode in which it stops the operation of the intake air blower 26 and the exhaust air blower 28, activates the motor 32 to circulate the air filter 30 relative to the heat exchanger 12, and then drives the exhaust air blower 28.

[0038] In this way, in the ventilator 100 in the first embodiment, the indoor discharge surface partition plate 36b is provided at a position on the indoor discharge surface 12b of the heat exchanger 12 to block the supply air flow from passing through the dust adhesion area of ​​the air filter 30. With the above configuration, it is possible to prevent the supply air flow from passing through the air filter 30 that has trapped dust between the heat exchanger 12 and the indoor discharge port 16. This makes it possible to prevent the dust trapped on the air filter 30 from flowing into the room with the supply air flow.

[0039] In the ventilator 100 in the first embodiment, the outdoor suction surface partition plate 36a is provided in a part of the air filter 30 covering the outdoor suction surface 12a of the heat exchanger 12 at a position where it blocks the supply airflow from passing through the air filter 30, the indoor suction surface partition plate 36c is provided in a part of the air filter 30 covering the indoor suction surface 12c of the heat exchanger 12 at a position where it blocks the exhaust airflow from passing through the air filter 30, and the indoor discharge surface partition plate 36b is provided in a part of the air filter 30 covering the indoor discharge surface 12b of the heat exchanger 12 at a position where it blocks the supply airflow from passing through the air filter 30. With the above configuration, it is possible to prevent the supply airflow from passing through the air filter 30 that has captured dust between the heat exchanger 12 and the indoor discharge port 16. This makes it possible to prevent the dust captured by the air filter 30 from flowing into the room by the supply airflow.

[0040] In the ventilator 100 according to the first embodiment, the outdoor suction surface partition plate 36a and the indoor suction surface partition plate 36c are provided at positions different from each other, and the indoor discharge surface partition plate 36b is provided at positions different from each other. This configuration can prevent the intake airflow from passing through the air filter 30 that has trapped dust between the heat exchanger 12 and the indoor discharge port 16. This can prevent the dust trapped on the air filter 30 from flowing into the room with the intake airflow.

[0041] Moreover, the ventilation device 100 in the first embodiment includes a separation mechanism 34 for separating dust captured by the air filter 30. The separation mechanism 34 is provided so as to contact the air filter 30 covering the outdoor discharge surface 12d of the heat exchanger 12. When the electric motor 32 circulates the air filter 30, the cleaning brush comes into contact with the air filter 30 so as to catch the dust from the air filter 30, so that the dust captured by the air filter 30 can be removed. Then, the exhaust fan 28 is operated to generate an exhaust flow, so that the dust can be discharged to the outside. With the above configuration, the air filter 30 can be automatically cleaned and clogging can be prevented. This improves the life and ventilation performance of the air filter 30.

[0042] The control unit 38 also has a cleaning operation mode in which it stops the operation of the intake air blower 26 and the exhaust air blower 28, operates the motor 32 to circulate the air filter 30 relative to the heat exchanger 12, and then drives the exhaust air blower 28. In this way, by having a cleaning operation mode including a series of operations in which the air filter 30 is circulated to remove dust, and the dust is discharged to the outside by the exhaust flow generated by the exhaust air blower 28, automatic cleaning of the air filter 30 can be performed in response to a single instruction from the user via the remote controller 50 to perform a cleaning operation, etc.

[0043] Although the partition plate 36 has been described as being located between the heat exchanger 12 and the air filter 30, the partition plate 36 may be disposed on the outside of the air filter 30. Even in this case, the same effect of preventing the intake air flow from passing through the air filter 30 that has captured dust between the heat exchanger 12 and the indoor discharge port 16 can be achieved.

[0044] In addition, in the first embodiment, the outdoor suction surface partition plate 36a, the indoor suction surface partition plate 36c, and the outdoor discharge surface partition plate 36d are provided in areas A to C at positions blocking the air filter 30 located in the rear half, and in area D, the indoor discharge surface partition plate 36b is provided at a position blocking the air filter 30 located in the front half, but the present invention is not limited to this. That is, the outdoor suction surface partition plate 36a, the indoor suction surface partition plate 36c, and the outdoor discharge surface partition plate 36d that block the intake air flow and the exhaust air flow from passing through the air filters 30 located in areas A to C and the indoor discharge surface partition plate 36b that blocks the intake air flow from passing through the air filter 30 located in area D may be provided in relatively different positions. For example, in areas A to C, the outdoor suction surface partition plate 36a, the indoor suction surface partition plate 36c, and the outdoor discharge surface partition plate 36d may be provided at positions blocking the air filter 30 located in the front half, and in area D, the indoor discharge surface partition plate 36b may be provided at a position blocking the air filter 30 located in the rear half. In the above configuration, the partition plate 36 is also provided at a position blocking the intake air flow from passing through the dust adhesion area of ​​the air filter 30 at the indoor discharge surface of the heat exchanger 12. This makes it possible to prevent the intake air flow from passing through the air filter 30 that has captured dust between the heat exchanger 12 and the indoor discharge port 16.

[0045] 4 is a perspective view of the heat exchanger 12 according to the first embodiment, viewed from the outdoor discharge surface 12d and the indoor discharge surface 12b. FIG. 5 is a perspective view of the heat exchanger 12 according to the first embodiment, viewed from the indoor suction surface 12c and the outdoor suction surface 12a. The four areas A to D may be further divided into two, an upper part and a lower part, in the Z-axis direction, which is the stacking direction of the heat exchanger 12. In this case, as shown in FIG. 4 and FIG. 5, the outdoor suction surface partition plate 36a and the indoor suction surface partition plate 36c, which prevent the intake air flow and the exhaust air flow from passing through the air filter 30 located in the areas A and B, and the indoor discharge surface partition plate 36b, which prevents the intake air flow from passing through the air filter 30 located in the area D, are provided at relatively different positions.

[0046] Although the configuration in which one partition plate 36 is provided for each area has been described, multiple partition plates 36 may be provided for one area. In this case, the partition plates 36 may be slit-shaped, and the positions of the outdoor suction surface partition plate 36a, the indoor suction surface partition plate 36c, and the outdoor discharge surface partition plate 36d that block the air filters 30 in areas A to C may be relatively different from the position of the indoor discharge surface partition plate 36b that blocks the air filter 30 in area D. With the above configuration, the pressure loss of the supply air flow passing through the air filter 30 located in area B is reduced compared to the case in which the outdoor suction surface partition plate 36a, the indoor suction surface partition plate 36c, and the outdoor discharge surface partition plate 36d are provided at positions that block the air filters 30 located in the rear half of areas A to C, and the indoor discharge surface partition plate 36b is provided at a position that blocks the air filter 30 located in the front half of area D. This allows the energy used by the entire ventilation device 100 to be reduced.

[0047] Furthermore, in the ventilation device 100 in the first embodiment, the outdoor discharge surface partition plate 36d is provided in the area C, but the outdoor discharge surface partition plate 36d may not be provided in the area C. Even in this case, the same effect of preventing the intake air flow from passing through the air filter 30 that has trapped dust between the heat exchanger 12 and the indoor discharge port 16 can be achieved.

[0048] The ventilation device 100 in the first embodiment includes the separation mechanism 34, but may be configured not to include the separation mechanism 34. Even in this case, the same effect of preventing the intake airflow from passing through the air filter 30 that has trapped dust between the heat exchanger 12 and the indoor discharge port 16 can be achieved.

[0049] In addition, the control unit 38 performs the cleaning operation of the air filter 30 based on the cleaning operation signal received from the remote controller 50, but this is not limited thereto. For example, the control unit 38 may automatically start the cleaning operation of the air filter 30. Specifically, the control unit 38 may count the operation time of the ventilation device 100, set a start condition for the cleaning operation such that the cleaning operation is performed when the total operation time reaches 50 hours, for example, and perform the cleaning operation of the air filter 30 based on the start condition. This makes it possible to more reliably perform automatic cleaning of the air filter 30 regardless of the user's intention, and to increase the life of the air filter 30.

[0050] In addition, the remote controller 50 is connected to the control unit 38 via the remote controller communication transmission path 52, but this is not limited thereto. The remote controller 50 may be connected to the control unit 38 by wireless communication. In addition, for example, a mobile information terminal such as a smartphone may function as the remote controller 50.

[0051] Embodiment 2 The ventilation device 101 in the first embodiment will be described with reference to Figs. 7, 8, and 9. Fig. 7 is a schematic diagram of the ventilation device 101 in the second embodiment. Fig. 8 is a schematic diagram of the heat exchanger 12 and its surroundings in the second embodiment. Fig. 9 is a perspective view of the heat exchanger 12 in the second embodiment from the outdoor discharge surface 12d and the indoor discharge surface 12b. The ventilation device 100 in the first embodiment is characterized in that the outdoor suction surface partition plate 36a, the indoor suction surface partition plate 36c, and the indoor discharge surface partition plate 36b are provided at positions that block the supply air flow and the exhaust air flow from passing through the air filter 30 in parts of the air filter 30 that cover the outdoor suction surface 12a, the indoor suction surface 12c, and the indoor discharge surface 12b of the heat exchanger 12. The ventilation device 101 of the second embodiment differs from the ventilation device 100 of the first embodiment in that an indoor discharge surface partition plate 36b is provided at a position that blocks the supply airflow from passing through the air filter 30 over the entire surface of the air filter 30 that covers the indoor discharge surface 12b of the heat exchanger 12. The same reference numerals are used for the same components as those of the first embodiment.

[0052] The indoor discharge surface partition plate 36b in the second embodiment is provided at a position that blocks the supply air flow from passing through the air filter 30, over the entire surface of the air filter 30 that covers the indoor discharge surface 12b of the heat exchanger 12. The supply air flow blown out from the indoor discharge surface 12b of the heat exchanger 12 cannot pass through the air filter 30 that covers the indoor discharge surface 12b. Therefore, as shown in FIG. 9, the supply air flow blown out from the indoor discharge surface 12b of the heat exchanger 12 passes through the Z-axis direction, which is the stacking direction of the heat exchanger 12, and is blown out from the indoor discharge port 16 into the room. In the second embodiment, the outdoor suction surface partition plate 36a, the indoor suction surface partition plate 36c, and the outdoor discharge surface partition plate 36d do not need to be provided.

[0053] Next, the cleaning operation of the air filter 30 will be described. The control unit 38 operates the electric motor 32 to circulate the air filter 30. When the air filter 30 passes the outdoor discharge surface 12d of the heat exchanger 12, dust captured by the air filter 30 is removed by the separation mechanism 34. In the ventilation device 101 of the second embodiment, unlike the ventilation device 100 of the first embodiment, the intake air flow does not pass through the air filter 30 covering the indoor discharge surface 12b of the heat exchanger 12. Therefore, in the ventilation device 101 of the second embodiment, there is no limit to the distance that the electric motor 32 moves the air filter 30. This moving distance is appropriately set according to the total operation time and maintenance time of the ventilation device 101.

[0054] The control unit 38 drives the exhaust fan 28. The exhaust air flow generated by the exhaust fan 28 discharges the dust removed by the separation mechanism 34 to the outside through the outdoor discharge port 20. As described above, in the ventilation device 101 of the second embodiment, unlike the ventilation device 100 of the first embodiment, the intake air flow does not pass through the air filter 30 covering the indoor discharge surface 12b of the heat exchanger 12. Therefore, when moving the air filter 30 by the electric motor 32, the control unit 38 does not need to stop the operation of the intake air fan 26 and the exhaust fan 28. Therefore, the exhaust fan 28 can be driven while moving the air filter 30. With the above, the cleaning operation of the air filter 30 is completed.

[0055] As described above, the control unit 38 has a cleaning operation mode in which the control unit 38 operates the electric motor 32 to circulate the air filter 30 relative to the heat exchanger 12 while driving the exhaust fan 28. This makes it possible to remove dust using the separation mechanism 34 while discharging the dust to the outside of the room using the exhaust flow, thereby achieving an advantageous effect of further improving the cleaning effect.

[0056] As described above, similarly to the first embodiment, the ventilation device 101 in the second embodiment has the indoor discharge surface partition plate 36b provided at a position on the indoor discharge surface 12b of the heat exchanger 12 that blocks the supply air flow from passing through the dust adhesion area of ​​the air filter 30. With the above configuration, it is possible to prevent the supply air flow from passing through the air filter 30 that has trapped dust between the heat exchanger 12 and the indoor discharge port 16. This makes it possible to prevent the dust trapped on the air filter 30 from flowing into the room with the supply air flow.

[0057] In addition, in the ventilator 101 in the second embodiment, the partition plate 36b for the indoor discharge surface is provided on the entire surface of the air filter 30 covering the indoor discharge surface 12b of the heat exchanger 12 at a position that blocks the supply air flow from passing through the air filter 30. The supply air flow blown out from the indoor discharge surface 12b of the heat exchanger 12 cannot pass through the air filter 30 covering the indoor discharge surface 12b. Therefore, as shown in FIG. 9, the supply air flow blown out from the indoor discharge surface 12b of the heat exchanger 12 passes through the Z-axis direction, which is the stacking direction of the heat exchanger 12, and is blown out from the indoor discharge port 16 into the room. This makes it possible to prevent the supply air flow from passing through the air filter 30 that has captured dust between the heat exchanger 12 and the indoor discharge port 16.

[0058] Furthermore, the control unit 38 drives the exhaust fan 28. When the air filter 30 is moved by the electric motor 32, the control unit 38 does not need to stop the operation of the intake air fan 26 and the exhaust fan 28. Thus, the exhaust fan 28 can be driven while moving the air filter 30. This makes it possible to remove dust with the separation mechanism 34 while discharging the dust to the outside of the room with the exhaust flow, thereby achieving an effect of further improving the cleaning effect.

[0059] The control unit 38 also has a cleaning operation mode in which the motor 32 is operated to circulate the air filter 30 relative to the heat exchanger 12 while driving the exhaust fan 28. This allows dust to be removed by the separation mechanism 34 while the dust is discharged to the outside by the exhaust flow, thereby improving the cleaning effect. In this way, by having a cleaning operation mode including a series of operations of removing dust by circulating the air filter 30 and discharging the dust to the outside by the exhaust flow generated by the exhaust fan 28, automatic cleaning of the air filter 30 can be performed in response to a single instruction from the user via the remote controller 50 to perform a cleaning operation.

[0060] (Appendix 1) a heat exchanger having an air supply passage connecting an outdoor suction surface that draws in outdoor air and an indoor discharge surface that blows out the outdoor air, and an exhaust passage connecting the indoor suction surface that draws in indoor air and the outdoor discharge surface that discharges the indoor air, and exchanging heat between the air supply flow flowing through the air supply passage and the exhaust flow flowing through the exhaust passage; an air filter that covers the outdoor suction surface, the indoor discharge surface, the indoor suction surface, and the outdoor discharge surface of the heat exchanger and captures dust in the intake air flow and the exhaust air flow of the heat exchanger; an electric motor for circulating the air filter relative to the heat exchanger; a partition plate for an indoor discharge surface, the partition plate being provided at a position on the indoor discharge surface of the heat exchanger that blocks the passage of the supply airflow through the dust adhesion area of ​​the air filter when the dust adhesion area of ​​the air filter that has captured the dust on the outdoor suction surface and the indoor suction surface of the heat exchanger is circulated and moved to the indoor discharge surface of the heat exchanger; A ventilation device comprising: (Appendix 2) an outdoor suction surface partition plate provided in a portion of the air filter covering the outdoor suction surface of the heat exchanger at a position that blocks the supply air flow from passing through the air filter; The heat exchanger further includes an indoor suction surface partition plate provided in a portion of the air filter covering the indoor suction surface of the heat exchanger at a position that blocks the exhaust flow from passing through the air filter, The ventilation device described in Appendix 1, characterized in that the indoor discharge surface partition plate is provided in a position that blocks the supply air flow from passing through the air filter in a part of the air filter that covers the indoor discharge surface of the heat exchanger. (Appendix 3) The ventilation device described in Appendix 2, characterized in that the outdoor suction surface partition plate and the indoor suction surface partition plate, and the indoor discharge surface partition plate are provided in relatively different positions. (Appendix 4) The ventilation device described in Appendix 1, characterized in that the indoor side discharge surface partition plate is provided in a position that blocks the supply air flow from passing through the air filter over the entire surface of the air filter that covers the indoor side discharge surface of the heat exchanger. (Appendix 5) 5. The ventilation device according to claim 1, further comprising a separation mechanism arranged in contact with the air filter covering the outdoor discharge surface of the heat exchanger, for separating the dust captured by the air filter. (Appendix 6) a control unit that controls an intake air blower that generates the intake air flow, an exhaust air blower that generates the exhaust air flow, and the electric motor; The ventilation device according to claim 1, wherein the control unit operates the motor to circulate the air filter relative to the heat exchanger. (Appendix 7) 7. The ventilation device according to claim 6, wherein the control unit has a cleaning operation mode in which the control unit operates the motor to circulate the air filter relative to the heat exchanger while driving the exhaust fan. (Appendix 8) The ventilation device described in Appendix 6, wherein the control unit has a cleaning operation mode in which it stops operation of the intake air blower and the exhaust air blower, activates the motor to circulate the air filter relative to the heat exchanger, and then drives the exhaust air blower. [Explanation of symbols]

[0061] 10 main body, 12 heat exchanger, 12a outdoor suction surface, 12b indoor discharge surface, 12c indoor suction surface, 12d outdoor discharge surface, 14 outdoor suction port, 16 indoor discharge port, 18 indoor suction port, 20 outdoor discharge port, 22 supply air duct, 22a supply air passage, 24 exhaust air duct, 24a exhaust passage, 26 supply air blower, 28 exhaust air blower, 30 air filter, 32 motor, 34 separation mechanism, 36 partition plate, 36a outdoor suction surface partition plate, 36b indoor discharge surface partition plate, 36c indoor suction surface partition plate, 36d outdoor discharge surface partition plate, 38 control unit, 40 control circuit, 42 supply air blower drive circuit, 44 Exhaust fan drive circuit, 46 motor drive circuit, 48 remote controller communication circuit, 50 remote controller, 52 remote controller communication transmission path

Claims

1. a heat exchanger having an air supply passage connecting an outdoor suction surface that draws in outdoor air and an indoor discharge surface that blows out the outdoor air, and an exhaust passage connecting the indoor suction surface that draws in indoor air and the outdoor discharge surface that discharges the indoor air, and exchanging heat between the air supply flow flowing through the air supply passage and the exhaust flow flowing through the exhaust passage; an air filter that covers the outdoor suction surface, the indoor discharge surface, the indoor suction surface, and the outdoor discharge surface of the heat exchanger and captures dust in the intake air flow and the exhaust air flow of the heat exchanger; an electric motor for circulating the air filter relative to the heat exchanger; a partition plate for an indoor discharge surface, the partition plate being provided at a position on the indoor discharge surface of the heat exchanger that blocks the passage of the supply airflow through the dust adhesion area of ​​the air filter when the dust adhesion area of ​​the air filter that has captured the dust on the outdoor suction surface and the indoor suction surface of the heat exchanger is circulated and moved to the indoor discharge surface of the heat exchanger; A ventilation device comprising:

2. an outdoor suction surface partition plate provided in a portion of the air filter covering the outdoor suction surface of the heat exchanger at a position that blocks the supply air flow from passing through the air filter; The heat exchanger further includes an indoor suction surface partition plate provided in a portion of the air filter covering the indoor suction surface of the heat exchanger at a position that blocks the exhaust flow from passing through the air filter, The ventilation device according to claim 1, characterized in that the indoor side discharge surface partition plate is provided in a position that blocks the supply air flow from passing through the air filter in a part of the air filter that covers the indoor side discharge surface of the heat exchanger.

3. The ventilation device according to claim 2, wherein the outdoor suction surface partition plate and the indoor suction surface partition plate are provided at relatively different positions from the indoor discharge surface partition plate.

4. The ventilation device according to claim 1, characterized in that the partition plate for the indoor side discharge surface is provided at a position that blocks the supply air flow from passing through the air filter over the entire surface of the air filter that covers the indoor side discharge surface of the heat exchanger.

5. 5. The ventilation device according to claim 1, further comprising a separation mechanism for separating the dust captured by the air filter, the separation mechanism being arranged in contact with the air filter covering the outdoor discharge surface of the heat exchanger.

6. a control unit that controls an intake air blower that generates the intake air flow, an exhaust air blower that generates the exhaust air flow, and the electric motor; The ventilation device according to claim 1 , wherein the control unit operates the electric motor to circulate the air filter relative to the heat exchanger.

7. The ventilation device according to claim 6 , wherein the control unit has a cleaning operation mode in which the control unit drives the exhaust fan while operating the electric motor to circulate the air filter relative to the heat exchanger.

8. 7. The ventilation device according to claim 6, wherein the control unit has a cleaning operation mode in which the control unit stops operation of the intake air blower and the exhaust air blower, operates the electric motor to circulate the air filter relative to the heat exchanger, and then drives the exhaust air blower.

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