JP6956870B2 - Heat exchange ventilator - Google Patents

Description

The present invention relates to a heat exchange ventilation device that ventilates while exchanging heat between a supply air flow and an exhaust flow.

The heat exchange ventilator is equipped with a filter for removing foreign matter that has entered the housing together with the air supply and foreign matter that has entered the housing together with the exhaust flow. Patent Document 1 discloses a heat exchange ventilator including an air supply filter arranged opposite to a surface on which supply air flows in the heat exchanger. The filter is arranged in the housing by inserting the filter holding unit that holds the air supply filter into the housing through the opening formed in the bottom plate of the housing.

Japanese Patent No. 5079135

In the heat exchange ventilator disclosed in Patent Document 1, the exhaust filter is arranged opposite the surface of the heat exchanger into which the exhaust gas flows. The exhaust filter is attached and detached by working from the opening after the filter holding unit is removed. Since the exhaust filter is placed behind the surface of the heat exchanger where the air supply flows when viewed from the opening, the existence of the exhaust filter is difficult to understand, and cleaning of the exhaust filter may be forgotten during maintenance. Further, when attaching / detaching the exhaust filter, it is difficult to confirm the position where the exhaust filter is arranged, so that it may take time to attach / detach the exhaust filter. The heat exchange ventilator is required to have high maintainability by easily attaching and detaching the filters arranged in the air supply air passage and the exhaust air passage.

The present invention has been made in view of the above, and an object of the present invention is to obtain a heat exchange ventilation device capable of achieving high maintainability by easily attaching and detaching filters arranged in an air supply air passage and an exhaust air passage. And.

In order to solve the above-mentioned problems and achieve the object, the heat exchange ventilation device according to the present invention includes a heat exchanger for exchanging heat between the supply air flow and the exhaust flow, and a housing. The housing includes a first plate portion provided with an air supply air inlet and an exhaust air outlet, a second plate portion provided with an air supply air outlet and an exhaust air inlet, and a first plate portion. It has a third plate portion and a fourth plate portion provided so as to face each other with the second plate portion, and from the air supply suction port to the air supply outlet through the heat exchanger. It has a housing in which an air supply air passage which is a path of an air supply air to be directed and an exhaust air passage which is a path of an exhaust air flow from an exhaust suction port to an exhaust air outlet through a heat exchanger are formed. The heat exchange ventilation device according to the present invention penetrates the exhaust air passage from the fourth plate portion between the first plate portion and the heat exchanger, and is on the side of the third plate portion with respect to the exhaust air passage. Between the air supply filter inserted into the air supply air passage and the second plate portion and the heat exchanger, the air supply air passage is passed through from the fourth plate portion, and the third plate is more than the air supply air passage. It is provided with an exhaust filter that is inserted into the exhaust air passage on the side of the unit. The air supply filter has a filter part having a filter mesh capable of filtering foreign matter from the air supply airflow from the air supply inlet to the heat exchanger, an open part through which the exhaust flow from the heat exchanger to the exhaust air outlet passes, and a filter part. It has a partition portion that separates the air supply air passage from the air supply air passage and the exhaust air passage that protrudes from the outer frame of the air supply filter. The exhaust filter includes a filter section having a filter mesh capable of filtering foreign matter from the exhaust flow from the exhaust suction port to the heat exchanger, an open section through which the air supply air flow from the heat exchanger to the air supply outlet passes, and a filter section. It has a partition portion that partitions the open portion and that protrudes from the outer frame of the exhaust filter and separates the air supply air passage and the exhaust air passage.

The heat exchange ventilation device according to the present invention has an effect that high maintainability can be realized by easily attaching and detaching the filter.

The figure which shows the structure of the heat exchange ventilation apparatus which concerns on Embodiment 1 of this invention. A first plan view showing the heat exchange ventilator shown in FIG. A second plan view showing the heat exchange ventilator shown in FIG. The figure explaining the air passage included in the heat exchange ventilation apparatus shown in FIG. The figure explaining the arrangement of the heat exchanger included in the heat exchange ventilator shown in FIG. A perspective view showing a first example of a heat exchanger included in the heat exchange ventilator shown in FIG. A perspective view showing a second example of the heat exchanger included in the heat exchange ventilator shown in FIG. Sectional view of the heat exchange ventilator in line VIII-VIII shown in FIG. The figure which shows the state which the heat exchange ventilation apparatus shown in FIG. 8 is arranged in a vertical installation. Cross-sectional view of the heat exchange ventilator in X-ray shown in FIG. Cross-sectional view of the heat exchange ventilator in the XI-XI line shown in FIG. A perspective view of an air supply filter included in the heat exchange ventilator shown in FIGS. 10 and 11. A perspective view of an exhaust filter included in the heat exchange ventilator shown in FIGS. 10 and 11. The figure explaining the flow of the drain water in the inclined part which the air supply filter shown in FIG. 12 has. The figure explaining the flow of the drain water in the inclined part which the air supply filter shown in FIG. 12 has. The figure which shows the state which the filter mesh is stretched in the open part of the exhaust filter shown in FIG.

Hereinafter, the heat exchange ventilation device according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a diagram showing a configuration of a heat exchange ventilation device 100 according to a first embodiment of the present invention. FIG. 2 is a first plan view showing the heat exchange ventilation device 100 shown in FIG. FIG. 3 is a second plan view showing the heat exchange ventilation device 100 shown in FIG. The heat exchange ventilation device 100 is a device capable of performing ventilation while exchanging heat between the exhaust flow and the supply airflow. FIG. 1 shows a perspective view of the heat exchange ventilation device 100 in a disassembled state.

The heat exchange ventilation device 100 can be installed both horizontally and vertically. When the heat exchange ventilation device 100 is installed on the ceiling, it is installed horizontally. When the heat exchange ventilator 100 is installed horizontally, the air supply blower 2, the heat exchanger 4, and the exhaust blower 3 are arranged in the horizontal direction. When the heat exchange ventilator 100 is installed vertically, the air supply blower 2, the heat exchanger 4, and the exhaust blower 3 are arranged in the vertical direction. When the heat exchange ventilation device 100 is wall-mounted and installed on a wall surface, the heat exchange ventilation device 100 is installed vertically. FIG. 2 shows a configuration when the heat exchange ventilation device 100 installed horizontally is viewed from below. FIG. 3 shows a configuration when the heat exchange ventilation device 100 installed horizontally is viewed from the front.

The heat exchange ventilation device 100 maintains a comfortable air environment in the room by ventilating the room by supplying air from the outside to the room and exhausting air from the room to the outside. Further, the heat exchange ventilation device 100 reduces the temperature difference between the air taken into the room and the air in the room by exchanging heat between the air supply airflow and the exhaust flow, and reduces the burden of air conditioning in the room.

The heat exchange ventilator 100 includes an air supply blower 2 that generates an air supply, an exhaust blower 3 that generates an exhaust flow, a heat exchanger 4 that exchanges heat between the air supply and the exhaust flow, and an air supply blower 2. It includes a housing 1 in which an exhaust blower 3 and a heat exchanger 4 are housed. The air supply blower 2 takes in the outdoor air into the housing 1 and sends the air taken into the housing 1 into the room. The exhaust blower 3 takes in the indoor air into the housing 1 and sends the air taken into the housing 1 to the outside. The housing 1 is provided with an air supply air passage through which the air supply airflow passes and an exhaust air passage through which the exhaust airflow passes.

In the following description, the posture of the housing 1 when the heat exchange ventilation device 100 is installed in a horizontal installation is the first posture, and the posture of the housing 1 when the heat exchange ventilation device 100 is installed in a vertical installation is the first posture. It is called the second posture.

The housing 1 is a box body having a rectangular parallelepiped shape, and is composed of six plate portions 1a, 1b, 1c, 1d, 1e, and 1f. The plate portion 1c, which is the first plate portion, is a portion provided with an air supply suction port 5 and an exhaust air outlet 8. The plate portion 1d, which is the second plate portion, is provided with an air supply air outlet 6 and an exhaust suction port 7. When the housing 1 is in the first posture, the plate portions 1c and 1d are side portions that are turned sideways. The plate portion 1c forms one end in the longitudinal direction in the rectangular parallelepiped shape presented by the housing 1. The plate portion 1d forms the other end in the longitudinal direction in the rectangular parallelepiped shape exhibited by the housing 1.

The plate portion 1a, which is the third plate portion, and the plate portion 1b, which is the fourth plate portion, are portions provided between the plate portion 1c and the plate portion 1d so as to face each other. When the housing 1 is in the first posture, the plate portion 1a is a portion that becomes a top surface that is directed upward. When the housing 1 is in the first posture, the plate portion 1b is a portion that becomes a bottom surface that is directed downward.

The plate portions 1e and 1f are portions provided between the plate portions 1c and the plate portions 1d so as to face each other. When the housing 1 is in the first posture, the plate portion 1e is a front portion facing forward. When the housing 1 is in the first posture, the plate portion 1f is a portion that becomes a rearward facing portion.

The housing 1 has an air supply air passage that is a path of airflow from the air supply suction port 5 to the air supply outlet 6 through the heat exchanger 4, and exhaust air from the exhaust suction port 7 through the heat exchanger 4. An exhaust air passage, which is an exhaust flow path to the air outlet 8, is formed.

The plate portion 1e is provided with a control device 9 that controls the entire heat exchange ventilation device 100. The control device 9 controls the ventilation air volume of the heat exchange ventilation device 100 by controlling the drive of the air supply blower 2 and the drive of the exhaust blower 3.

An opening 10 is formed in the plate portion 1b at a position facing the heat exchanger 4. The position of the opening 10 is the position on the lower side of the heat exchanger 4 when the housing 1 is in the first posture. When the heat exchange ventilation device 100 is horizontally installed behind the ceiling, the ceiling is provided with an opening 10 from below the ceiling and an inspection port 11 for working on the control device 9. In FIGS. 1 and 2, the range of the inspection port 11 is shown by a broken line. The components housed in the housing 1 are removable through the opening 10.

When the housing 1 is in the second posture, the plate portion 1c is the bottom surface, the plate portion 1d is the top surface, the plate portion 1b is the front surface, the plate portion 1a is the back surface, and the plate portions 1e and 1f are the side surfaces. Become. As a case where the heat exchange ventilation device 100 is installed vertically, it may be installed by being embedded in the wall of a living room, or it may be installed by being hung on a wall surface of a room such as a machine room or a storage room other than the living room of a building. obtain. Since the heat exchange ventilation device 100 is hung with the opening 10 facing the front, the work on the opening 10 and the control device 9 can be performed from the front without going through the inspection port 11. In the heat exchange ventilation device 100, since the housing 1 is in the second posture, the work can be performed without going through the inspection port 11, and the workability at the time of maintenance may be improved. When the heat exchange ventilation device 100 is installed by being embedded in a wall, it may be possible to work on the opening 10 and the control device 9 through the inspection port 11 formed on the wall surface.

The drain pan 12, which is the first drain receiver, is arranged below the heat exchanger 4 when the housing 1 is in the first posture. The drain pan 12 collects the drain water generated in the heat exchanger 4 when the housing 1 is in the first posture. The drain pan 12 closes the opening 10 by being attached to the plate portion 1b.

The air supply filter 13 is arranged inside the housing 1 on the plate portion 1c side of the heat exchanger 4. The exhaust filter 14 is arranged inside the housing 1 on the plate portion 1d side of the heat exchanger 4. Details of the air supply filter 13 and the exhaust filter 14 will be described later.

FIG. 4 is a diagram illustrating an air passage included in the heat exchange ventilation device 100 shown in FIG. FIG. 4 shows a state in which the internal configuration of the housing 1 is viewed from below when the housing 1 is in the first posture.

The heat exchange ventilation device 100 has a damper 20 that switches between heat exchange ventilation and normal ventilation. The heat exchange ventilation is ventilation that involves heat exchange between the supply air flow 17 and the exhaust flow 18. In heat exchange ventilation, the heat exchange ventilation device 100 sends the air supply air 17 that has undergone heat exchange with the exhaust flow 18 by the heat exchanger 4 into the room. The heat exchange ventilation device 100 reduces the air conditioning burden by bringing the temperature of the outdoor air closer to the temperature of the indoor air by heat exchange ventilation when the indoor temperature is more comfortable than the outdoor temperature.

Normal ventilation is ventilation that does not involve heat exchange between the supply airflow 17 and the exhaust flow 18. In normal ventilation, the heat exchange ventilation device 100 sends a supply airflow 17 that does not undergo heat exchange with the exhaust flow 18 by the heat exchanger 4 into the room. When the outdoor temperature is more comfortable than the indoor temperature, the heat exchange ventilation device 100 sends air at a comfortable temperature from the outdoor to the indoor by normal ventilation to make the indoor comfortable temperature and reduce the air conditioning load. .. Further, in the normal ventilation, the pressure loss due to the passage of the exhaust flow 18 to the heat exchanger 4 is suppressed, so that the power consumption of the heat exchange ventilation device 100 can be reduced. In FIG. 4, the exhaust flow 18 is the exhaust flow in the case of heat exchange ventilation. The bypass airflow 19 is an exhaust flow in the case of normal ventilation. The housing 1 is provided with an air supply air passage 15 through which the air supply airflow 17 passes, and an exhaust air passage 16 through which the exhaust airflow 18 and the bypass airflow 19 pass.

The air supply air passage 15 includes an upstream air passage 15a between the air supply suction port 5 and the surface of the heat exchanger 4 from which the air supply airflow 17 flows in, and a surface of the heat exchanger 4 from which the airflow 17 flows out. Includes the downstream air passage 15b between the air supply outlet 6 and the air supply outlet 6. The airflow 17 sucked into the air supply suction port 5 from the outside passes through the upstream air passage 15a, passes through the air supply filter 13, and then flows into the heat exchanger 4. The airflow 17 flowing out of the heat exchanger 4 passes through the downstream air passage 15b and is blown out from the air supply outlet 6 toward the room.

The exhaust air passage 16 includes an upstream air passage 16a between the exhaust suction port 7 and the surface of the heat exchanger 4 where the exhaust flow 18 flows in, and the surface of the heat exchanger 4 where the exhaust flow 18 flows out and exhaust. Includes the downstream air passage 16b between the air outlet 8 and the air outlet 8. The exhaust flow 18 sucked from the room into the exhaust suction port 7 passes through the upstream air passage 16a, passes through the exhaust filter 14, and then flows into the heat exchanger 4. The exhaust flow 18 flowing out of the heat exchanger 4 passes through the downstream air passage 16b and is blown out from the exhaust outlet 8 toward the outside.

The bypass air passage 21 is an air passage provided outside the heat exchanger 4. The upstream air passage 16a is provided with a heat exchange side opening 22 through which the exhaust flow 18 toward the heat exchanger 4 passes and a bypass side opening 23 through which the bypass air flow 19 toward the bypass air passage 21 passes. There is. The damper 20 is rotatably supported between the heat exchange side opening 22 and the bypass side opening 23. The damper 20 as a switching unit switches between the flow of the exhaust flow 18 from the exhaust suction port 7 to the heat exchanger 4 and the flow of the bypass airflow 19 from the exhaust suction port 7 to the bypass air passage 21. The control device 9 controls switching between heat exchange ventilation and normal ventilation by controlling the operation of the damper 20.

In heat exchange ventilation, the damper 20 closes the bypass side opening 23. The exhaust flow 18 passes from the upstream air passage 16a through the heat exchange side opening 22 and proceeds to the heat exchanger 4. On the other hand, in normal ventilation, the damper 20 closes the heat exchange side opening 22. The bypass airflow 19 passes from the upstream side air passage 16a through the bypass side opening 23 and proceeds to the bypass air passage 21. The exhaust flow 18 that has passed through the heat exchanger 4 and the bypass airflow 19 that has passed through the bypass air passage 21 pass through the downstream air passage 16b and proceed to the exhaust outlet 8. Each air passage formed in the housing 1 is provided with a heat insulating component 27 shown in FIG. 1 in order to prevent dew condensation from occurring.

FIG. 5 is a diagram illustrating an arrangement of the heat exchanger 4 included in the heat exchange ventilator 100 shown in FIG. FIG. 5 shows a perspective view of a state in which the drain pan 12, the air supply filter 13, and the exhaust filter 14 are removed from the heat exchange ventilation device 100. The heat exchanger 4 is arranged between the plate portion 1a and the drain pan 12. The heat exchanger 4 is located in the center of the housing 1 in the longitudinal direction.

During maintenance of the heat exchange ventilation device 100, the drain pan 12 is removed from the opening 10, and the air supply filter 13 and the exhaust filter 14 are removed from the inside of the housing 1 through the opening 10. Further, the heat exchanger 4, the air supply blower 2, and the exhaust blower 3 are removed from the housing 1 through the opening 10. Immediately below the heat exchanger 4 when the housing 1 is in the first posture, a plurality of holding plates 24 are provided to prevent the heat exchanger 4 from falling during maintenance. By making the drain pan 12 removable from the opening 10, the heat exchanger 4, the air supply blower 2, and the exhaust blower 3 can be taken out from the inside of the housing 1 through the opening 10.

FIG. 6 is a perspective view showing a first example of the heat exchanger 4 included in the heat exchange ventilator 100 shown in FIG. The heat exchanger 4 according to the first example has a quadrangular prism shape. The heat exchanger 4 according to the first example is an orthogonal type heat exchanger in which the direction of the air supply airflow 17 and the direction of the exhaust flow 18 are perpendicular to each other.

The heat exchanger 4 is provided between the air supply air passage 15 and the exhaust air passage 16. The heat exchanger 4 performs total heat exchange between the supply airflow 17 and the exhaust flow 18. The heat exchanger 4 includes a plurality of partitioning members 30 arranged so as to be spaced apart from each other, and an interval holding member 31 for maintaining the spacing between the plurality of partitioning members 30. The heat exchanger 4 is a laminated body formed by laminating a partition material 30 and an interval holding material 31. The partition material 30 is a sheet material processed flat. The interval holding material 31 is a sheet material having corrugated irregularities. The partition member 30 and the spacing member 31 are joined to each other.

The heat exchanger 4 is arranged so that the stacking direction, which is the direction in which the partition member 30 and the spacing member 31 are laminated, is parallel to the plate portion 1e and the plate portion 1f. The heat exchanger 4 may be arranged so that the stacking direction is parallel to the plate portion 1c and the plate portion 1d.

In the laminated body, the spacing members 31 having different directions so that the directions of the corrugated folds are perpendicular to each other are alternately laminated via the partition member 30. As a result, the heat exchanger 4 is provided with the primary passage 32 through which the exhaust flow 18 passes and the secondary passage 33 through which the supply air flow 17 passes alternately in the stacking direction. In the partition material 30, the sensible heat exchange and latent heat exchange between the exhaust flow 18 passing through the primary passage 32 and the supply airflow 17 passing through the secondary passage 33 without mixing the supply airflow 17 and the exhaust flow 18 are performed. Is done. The heat exchanger 4 may perform only one of sensible heat exchange and latent heat exchange.

Paper is used for the partition member 30 and the spacing member 31. The heat exchanger 4 can reduce the manufacturing cost by using paper for the partition member 30 and the spacing member 31. Since the primary passage 32 and the secondary passage 33 are composed of paper, the dew condensation water generated by the heat exchange can be held by the primary passage 32 and the secondary passage 33. In addition, it is possible to reduce blockage of the air passage due to freezing of the condensed water that has entered the air passage.

FIG. 7 is a perspective view showing a second example of the heat exchanger 4 included in the heat exchange ventilator 100 shown in FIG. The heat exchanger 4 according to the second example has a hexagonal column shape. The heat exchanger 4 according to the second example is a countercurrent type heat exchanger in which the direction of the supply airflow 17 and the direction of the exhaust flow 18 are different by 180 degrees. Either the heat exchanger 4 according to the first example or the heat exchanger 4 according to the second example may be applied to the heat exchange ventilator 100. The shape of the heat exchanger 4 may be a polygonal column shape, and may be a shape other than the hexagonal column shape and the quadrangular column shape. Note that FIG. 1 shows the heat exchanger 4 according to the second example. By providing the countercurrent type heat exchanger 4, the heat exchange ventilator 100 can perform heat conversion with high heat exchange efficiency.

Next, the configuration for discharging the drain water in the heat exchange ventilation device 100 will be described. FIG. 8 is a cross-sectional view of the heat exchange ventilator 100 in line VIII-VIII shown in FIG. FIG. 8 shows a heat exchange ventilation device 100 installed horizontally. When the housing 1 is in the first posture, the plate portion 1b shown in FIG. 2 is directed downward. The drain pan 35 which is the second drain receiver, the drain pan 36 which is the third drain receiver, and the drain pan 37 which is the fourth drain receiver are provided on the inner surface of the housing 1 in the plate portion 1b, and the housing It is housed in body 1.

In the drain pan 35, of the upstream air passage 15a of the air supply air passage 15 and the downstream air passage 16b of the exhaust air passage 16, the lower side when the housing 1 is in the first posture and the housing 1 are the second. It is arranged on the lower side when it is in the posture of. The drain pan 35 holds drain water in the upstream air passage 15a and the downstream air passage 16b.

The drain pan 36 is arranged on the lower side of the upstream air passage 16a of the exhaust air passage 16 and the downstream air passage 15b of the air supply air passage 15 when the housing 1 is in the first posture. The drain pan 36 holds drain water in the upstream air passage 16a and the downstream air passage 15b.

The drain pan 37 is arranged on the lower side of the bypass air passage 21 when the housing 1 is in the first posture. The drain pan 37 holds the drain water in the bypass air passage 21. The heat exchange ventilator 100 makes it possible to hold drain water by four drain pans 12, 35, 36, and 37. The four drain pans 12, 35, 36, and 37 are connected to each other so that a path for discharging drain water to the outside of the housing 1 can be configured.

The first drainage port 25 is located at the lower part of the housing 1 when the housing 1 is in the first posture. The first drain port 25 allows the drain water held in the housing 1 to flow out of the housing 1. The first drain port 25 is erected from the end portion 12a of the drain pan 12 on the air supply filter 13 side in a direction perpendicular to the longitudinal direction of the housing 1. The first drainage port 25 is erected perpendicularly to the plate portion 1e. If the first drainage port 25 is oriented parallel to the longitudinal direction of the housing 1, the first drainage port 25 may hinder the attachment / detachment of the air supply filter 13 or the exhaust filter 14. Since the first drainage port 25 is perpendicular to the longitudinal direction of the housing 1, the first drainage port 25 can be arranged in a manner that does not hinder the attachment / detachment of the air supply filter 13 or the exhaust filter 14.

When the housing 1 is in the first posture, the height position of the first drainage port 25 is the same as the height position of the plate portion 1b. Since the first drainage port 25 is provided at the lowest possible position when the housing 1 is in the first posture, the heat exchange ventilation device 100 can promote drainage from the first drainage port 25. can.

At the boundary between the drain pan 36 and the drain pan 37, a drainage path portion 38a forming a drainage path is provided. The drainage path portion 38a is a portion that connects the drain pan 36 and the drain pan 37 and is formed so that the drain pan 36 is at a higher position than the drain pan 37 when the housing 1 is in the first posture. The drain water stored in the drain pan 36 flows to the drain pan 37 through the drainage path portion 38a.

A drainage path portion 38c constituting a drainage path is provided at a boundary between the drain pan 37 and the end portion 12a of the drain pan 12. The drainage path portion 38c is a portion formed so as to connect the drain pan 37 and the end portion 12a and to position the drain pan 37 higher than the end portion 12a when the housing 1 is in the first posture. .. The drain water stored in the drain pan 37 flows to the end portion 12a through the drainage path portion 38c. The drain water that has flowed to the end portion 12a is discharged to the outside of the housing 1 from the first drain port 25.

A drainage path portion 38b forming a drainage path is provided at the boundary between the drain pan 35 and the end portion 12a of the drain pan 12. The drainage path portion 38b is provided between the air supply filter 13 and the plate portion 1e. The drainage path portion 38b is a portion formed so as to connect the drain pan 35 and the end portion 12a and to position the drain pan 35 higher than the end portion 12a when the housing 1 is in the first posture. .. The drain water stored in the drain pan 35 flows to the end portion 12a through the drainage path portion 38b. The drain water that has flowed to the end portion 12a is discharged to the outside of the housing 1 from the first drain port 25.

FIG. 9 is a diagram showing a state in which the heat exchange ventilation device 100 shown in FIG. 8 is arranged vertically. FIG. 9 shows the same cross section as that shown in FIG. When the housing 1 is in the second posture, the plate portion 1c is directed downward. The second drainage port 26 is located at the lower part of the housing 1 when the housing 1 is in the second posture. The second drain port 26 allows the drain water held in the housing 1 to flow out of the housing 1. The second drain port 26 is provided next to the drain pan 35 in the plate portion 1c. The second drainage port 26 is erected perpendicularly to the plate portion 1c. The direction in which the first drainage port 25 is erected from the housing 1 and the direction in which the second drainage port 26 is erected from the housing 1 are perpendicular to each other.

Since the housing 1 is in the second posture, the drain water generated in the housing 1 moves downward. The drain water flows downward along the wall portion or each drain pan 12, 35, 36, 37 constituting each air passage, or falls downward after leaving the wall portion and each drain pan 12, 35, 36, 37. The drain water that has reached the plate portion 1c is discharged to the outside of the housing 1 from the second drain port 26. The housing 1 may be provided with a configuration for preventing leakage of drain water in the plate portion 1c, or may be provided with a drain pan. A configuration for blocking drain water may be provided at the inner end of the housing 1 of the supply air suction port 5 and the exhaust air outlet 8. As a result, the drain water that has reached the plate portion 1c can be discharged from the second drain port 26 without leakage.

FIG. 10 is a cross-sectional view of the heat exchange ventilator 100 in X-rays shown in FIG. FIG. 11 is a cross-sectional view of the heat exchange ventilator 100 on the XI-XI line shown in FIG. The cross section shown in FIG. 10 is a cross section that passes through the air supply inlet 5, the heat exchanger 4, the air supply blower 2, and the air supply outlet 6, and is a cross section along the air supply air passage 15. The cross section shown in FIG. 11 is a cross section that passes through the exhaust suction port 7, the heat exchanger 4, the exhaust blower 3, and the exhaust outlet 8, and is a cross section along the exhaust air passage 16.

The heat exchanger 4 has a surface 4a into which the air supply airflow 17 flows in, a surface 4b in which the exhaust gas flow 18 flows in, a surface 4c in which the air supply airflow 17 flows out, and a surface 4d in which the exhaust gas flow 18 flows out. The surfaces 4a and 4d are two surfaces of the heat exchanger 4 on the plate portion 1c side. The surface 4a is closer to the plate portion 1a than the surface 4d. The surfaces 4b and 4c are two surfaces of the heat exchanger 4 on the plate portion 1d side. The surface 4b is on the plate portion 1a side with respect to the surface 4c.

The air supply filter 13 penetrates the downstream air passage 16b from the plate 1b between the plate 1c and the heat exchanger 4, and the upstream air passage 15a on the plate 1a side of the downstream air passage 16b. Is inserted into. The air supply filter 13 can be installed in the housing 1 and removed from the housing 1 through the opening 10. The air supply filter 13 collects foreign substances such as dust and insects contained in the air flowing into the upstream air passage 15a from the outside through the air supply suction port 5.

The exhaust filter 14 penetrates the downstream air passage 15b from the plate 1b between the plate 1d and the heat exchanger 4 to the upstream air passage 16a on the plate 1a side of the downstream air passage 15b. Will be inserted. The exhaust filter 14 can be attached to and removed from the housing 1 through the opening 10. The exhaust filter 14 collects foreign matter such as dust contained in the air flowing from the room through the exhaust suction port 7 into the upstream air passage 16a. The heat exchange ventilator 100 collects foreign matter with the air supply filter 13 and the exhaust filter 14 to prevent clogging of the heat exchanger 4 due to the adhesion of the foreign matter.

When the housing 1 is in the first posture, the plate portion 1b of the housing 1 is directed downward. When the housing 1 is in the second posture, the plate portion 1c of the housing 1 is directed downward. In the surface 4b and the surface 4d through which the exhaust flow 18 passes in the heat exchanger 4, the surface 4b is above the surface 4d regardless of whether the posture of the housing 1 is the first posture or the second posture. Located in. As a result, the heat exchanger 4 can promote drainage of drain water generated by dew condensation of indoor air regardless of whether the posture of the housing 1 is the first posture or the second posture.

Since the position where the air supply filter 13 and the exhaust filter 14 are arranged can be easily confirmed from the opening 10, the air supply filter 13 and the exhaust filter 14 can be easily attached and detached by the work from the plate portion 1b side. Can be done. Since the existence of the air supply filter 13 and the exhaust filter 14 is easy to understand when the air supply filter 13 and the exhaust filter 14 are installed in the housing 1, the air supply filter 13 and the exhaust filter 14 are cleaned during maintenance. Can be reduced from being forgotten.

FIG. 12 is a perspective view of the air supply filter 13 included in the heat exchange ventilation device 100 shown in FIGS. 10 and 11. The air supply filter 13 has a filter portion 40 inserted into the upstream air passage 15a and an opening portion 41 inserted into the downstream air passage 16b. The filter unit 40 has a filter mesh 44 that filters foreign matter from the air supply 17 from the air supply suction port 5 toward the surface 4a of the heat exchanger. The opening portion 41 is opened so that the exhaust flow 18 from the surface 4d to the exhaust outlet 8 passes through.

The outer frame 42 of the air supply filter 13 is provided with a partition portion 47 for partitioning the filter portion 40 and the open portion 41. The partition portion 47 is formed so as to project from the outer frame 42, and constitutes a boundary between the upstream side air passage 15a and the downstream side air passage 16b. The end portion 48 is an end portion of the air supply filter 13 on the plate portion 1b side in a state where the air supply filter 13 is mounted on the housing 1. The end portion 48 is a portion that is used as a handle when attaching and detaching the air supply filter 13.

In the filter unit 40, the filter mesh 44 is stretched in the area surrounded by the outer frame 42 and the inner frame 43 of the air supply filter 13. The filter mesh 44 is a resin forming a mesh capable of filtering foreign substances from air. The filter mesh 44 may be made of a material other than resin. FIG. 12 shows an air supply filter 13 in which filter meshes 44 are provided in four regions. The mode of arrangement of the inner frame 43 and the filter mesh 44 is not limited to the case as shown in FIG. 12, and may be appropriately changed.

The opening portion 41 has ribs 45 and 46 that partition the region surrounded by the outer frame 42 of the opening portion 41 and the partition portion 47 in a grid pattern. The rib 45 is erected between the partition portion 47 and the end portion 48. The rib 46 is provided between the partition portion 47 and the end portion 48 so as to be orthogonal to the rib 45. The air supply filter 13 is provided with ribs 45 and 46 in the open portion 41 to rectify the exhaust flow 18 passing through the open portion 41 and suppress the pressure loss of the exhaust flow 18. FIG. 12 shows three ribs 45 and one rib 46. The arrangement of the ribs 45 and 46 is not limited to the case as shown in FIG. 12, and may be changed as appropriate.

An inclined portion 49 is provided at the end of the open portion 41 on the end portion 48 side. The inclined portion 49 is inclined with respect to the horizontal plane in a state where the air supply filter 13 is attached to the housing 1 in the first posture. The inclined portion 49 is tilted with respect to the vertical plane in a state where the air supply filter 13 is attached to the housing 1 in the second posture.

FIG. 13 is a perspective view of the exhaust filter 14 included in the heat exchange ventilation device 100 shown in FIGS. 10 and 11. The exhaust filter 14 has the same configuration as the air supply filter 13 shown in FIG. The exhaust filter 14 has a filter portion 50 inserted into the upstream air passage 16a and an opening portion 51 inserted into the downstream air passage 15b. The filter unit 50 has a filter mesh 44 that filters foreign matter from the exhaust flow 18 from the exhaust suction port 7 toward the surface 4b of the heat exchanger. The opening 51 is opened so that the air supply 17 from the surface 4c to the air supply outlet 6 can pass through.

The partition portion 52 partitions the filter portion 50 and the open portion 51. The partition portion 52 is formed so as to project from the outer frame 42, and constitutes a boundary between the upstream side air passage 16a and the downstream side air passage 15b. The inclined portion 53 is inclined with respect to the horizontal plane in a state where the exhaust filter 14 is attached to the housing 1 in the first posture. The inclined portion 53 is tilted with respect to the vertical plane in a state where the exhaust filter 14 is attached to the housing 1 in the second posture.

14 and 15 are views for explaining the flow of drain water in the inclined portion 49 of the air supply filter 13 shown in FIG. FIG. 14 shows the inclined portion 49 and the configuration around the inclined portion 49 when the housing 1 is in the first posture. FIG. 15 shows the inclined portion 49 and the configuration around the inclined portion 49 when the housing 1 is in the second posture.

When the housing 1 is in the first posture, the drain water adhering to the filter portion 40 shown in FIG. 12 flows downward and reaches the partition portion 47 due to the condensation of water in the upstream air passage 15a. The drain water that has flowed downward beyond the partition portion 47 reaches the inclined portion 49 through the outer frame 42 and the rib 45 of the open portion 41. The inclined portion 49 is inclined so that the side of the drain pan 12 is lowered when the housing 1 is in the first posture. The drain water that has reached the inclined portion 49 goes downward on the inclined portion 49 and travels toward the drain pan 12. As described above, since the air supply filter 13 is provided with the inclined portion 49, the flow of drain water from the air supply filter 13 to the drain pan 12 can be promoted.

Similar to the inclined portion 49 shown in FIG. 14, the inclined portion 53 of the exhaust filter 14 has an inclined portion in which the side of the drain pan 12 becomes lower when the housing 1 is in the first posture. Since the exhaust filter 14 is provided with the inclined portion 53, the flow of drain water from the exhaust filter 14 to the drain pan 12 can be promoted.

When the housing 1 is in the second posture, the drain water generated by the condensation of water in the upstream air passage 16a and passing through the primary passage 32 shown in FIG. 7 flows from the surface 4d shown in FIG. 11 to the heat exchanger 4 It flows out of. The drain water flowing out of the heat exchanger 4 goes to the drain pan 35 through the open portion 41 of the air supply filter 13. The drain pan 35 is located below the inclined portion 49 and on the side of the plate portion 1a with respect to the inclined portion 49. The inclined portion 49 is inclined toward the drain pan 35 downward when the housing 1 is in the second posture. The drain water that has reached the inclined portion 49 travels toward the drain pan 35. As described above, the air supply filter 13 is provided with the inclined portion 49, so that the flow of drain water from the heat exchanger 4 to the drain pan 35 can be promoted.

A filter mesh may be stretched on the open portion 51 of the exhaust filter 14. FIG. 16 is a diagram showing a state in which the filter mesh 55 is stretched on the open portion 51 of the exhaust filter 14 shown in FIG. When the foreign matter flowing with the air supply air 17 shown in FIG. 10 passes through the filter mesh 44 of the air supply filter 13, the foreign matter may pass through the secondary passage 33 shown in FIG. 7. Further, when the air supply filter 13 is removed during maintenance, if the foreign matter adhering to the filter mesh 44 of the air supply filter 13 falls into the secondary passage 33, the foreign matter is removed by restarting the operation of the heat exchange ventilation device 100. It is possible to pass through the secondary passage 33.

By stretching the filter mesh 55 on the opening 51, the exhaust filter 14 makes it possible to collect foreign matter that has passed through the secondary passage 33. As a result, the heat exchange ventilation device 100 can prevent foreign matter that has entered the upstream side of the air supply filter 13 from entering the room through the air supply air outlet 6 on the air supply airflow 17.

Next, regarding the discharge of the drain water generated by the indoor air and the drain water generated by the outdoor air, when the housing 1 is in the first posture shown in FIG. 8 and when the housing 1 is in the second posture shown in FIG. It will be explained separately.

When the housing 1 is in the first posture and the humid air in the room enters the upstream air passage 16a from the exhaust suction port 7, the water condensed in the upstream air passage 16a is held in the drain pan 36. NS. The drain water stored in the drain pan 36 flows to the drain pan 37 through the drainage path portion 38a. The drain water that has flowed to the drain pan 37 flows to the end portion 12a through the drainage path portion 38c. The drain water that has flowed to the end portion 12a is discharged to the outside of the housing 1 from the first drain port 25. The water condensed in the downstream air passage 16b after passing through the heat exchanger 4 is held in the drain pan 35. The drain water stored in the drain pan 35 passes through the drainage path portion 38b and is discharged to the outside of the housing 1 from the first drain port 25.

When the housing 1 is in the first posture, when humid outdoor air enters the upstream air passage 15a from the air supply suction port 5, the water condensed in the upstream air passage 15a is held in the drain pan 35. Will be done. The drain pan 35 is formed with a partition portion 39 that partitions the upstream air passage 15a and the downstream air passage 16b. The water condensed in the downstream air passage 16b proceeds to the drainage path portion 38b without being mixed with the water condensed in the upstream air passage 15a because the partition portion 39 is provided. When the outdoor air is humid, it is assumed that the outdoor air is temporarily humid due to fog or the like. The heat exchange ventilation device 100 may hold the water condensed in the upstream air passage 15a in the drain pan 35 and evaporate the water by the ventilation operation.

When the heat exchange ventilation device 100 is in the first posture, when the humid air outside the room enters the bypass air passage 21, the water condensed in the bypass air passage 21 is held in the drain pan 37. The drain water stored in the drain pan 37 passes through the drainage path portion 38c and the end portion 12a, and is discharged from the first drainage port 25 to the outside of the housing 1.

The drain water generated by the condensation inside the heat exchanger 4 is held in the drain pan 12. The drain water stored in the drain pan 12 passes through the end portion 12a and is discharged to the outside of the housing 1 from the first drain port 25.

In this way, the heat exchange ventilation device 100 advances the drain water generated in each air passage and the heat exchanger 4 to the first drain port 25, and discharges the drain water to the outside of the housing 1. When the housing 1 is in the first posture, a water blocking component for stopping the outflow of drain water may be attached to the second drain port 26. As a result, it is possible to prevent the drain water from leaking from the second drain port 26. As described above, when the drain water stored in the drain pan 35 can be discharged from the second drain port 26, the water stop component may not be attached to the second drain port 26. In this case, a water blocking component for stopping water at the second drain port 26 becomes unnecessary.

In the heat exchange ventilation device 100, in addition to the drain pan 12 provided below the heat exchanger 4, the drain pans 35, 36, and 37 for each air passage are provided, so that humid air can be sent to the housing 1. The drain water generated by being taken in can be retained in each air passage.

When the housing 1 is in the second posture and the humid air in the room enters the upstream air passage 16a from the exhaust suction port 7, the water condensed in the upstream air passage 16a is the upstream air passage. It flows downward or falls downward along the wall portion or each drain pan 12, 35, 36, 37 that constitutes each air passage below 16a. The drain water that has reached the plate portion 1c is discharged to the outside of the housing 1 from the second drain port 26.

When the housing 1 is in the second posture, the drain water generated when the humid outdoor air enters the upstream air passage 15a from the air supply suction port 5 and the drain water generated in the bypass air passage 21. And the drain water generated inside the heat exchanger 4 flows downward or falls. The drain water that has reached the plate portion 1c is discharged to the outside of the housing 1 from the second drain port 26.

In this way, the heat exchange ventilation device 100 advances the drain water generated in each air passage and the heat exchanger 4 to the second drain port 26, and discharges the drain water to the outside of the housing 1. When the housing 1 is in the second posture, a water blocking component may be attached to the first drain port 25. As a result, it is possible to prevent the drain water from leaking from the first drain port 25.

According to the first embodiment, the heat exchange ventilation device 100 penetrates the exhaust air passage from the plate portion 1b between the plate portion 1c and the heat exchanger 4, and is closer to the plate portion 1a than the exhaust air passage. Between the air supply filter 13 inserted into the air supply air passage, the plate portion 1d, and the heat exchanger 4, the exhaust air passes through the air supply air passage from the plate portion 1b and is exhausted on the side of the plate portion 1a from the air supply air passage. It includes an exhaust filter 14 that is inserted into the air passage. As a result, the heat exchange ventilation device 100 has an effect that high maintainability can be realized by easily attaching and detaching the air supply filter 13 and the exhaust filter 14.

The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

1 Housing, 1a, 1b, 1c, 1d, 1e, 1f Plate, 2 Air supply blower, 3 Exhaust blower, 4 Heat exchanger, 4a, 4b, 4c, 4d surface, 5 Air supply inlet, 6 Air supply Air outlet, 7 Exhaust air inlet, 8 Exhaust air outlet, 9 Control device, 10 openings, 11 Inspection port, 12, 35, 36, 37 Drain pan, 12a, 48 end, 13 Air supply filter, 14 Exhaust filter, 15 supply Air passage, 15a, 16a upstream side air passage, 15b, 16b downstream side air passage, 16 exhaust air passage, 17 air supply airflow, 18 exhaust flow, 19 bypass airflow, 20 damper, 21 bypass air passage, 22 heat exchange side opening. , 23 Bypass side opening, 24 Press plate, 25 1st drain, 26 2nd drain, 27 Insulation parts, 30 Partitions, 31 Spacing material, 32 Primary passage, 33 Secondary passage, 38a, 38b , 38c Drainage path, 39,47,52 Partition, 40,50 Filter, 41,51 Open, 42 Outer frame, 43 Inner frame, 44,55 Filter mesh, 45,46 Ribs, 49,53 Inclined , 100 heat exchange ventilator.

Claims (6)

A heat exchanger that exchanges heat between the air supply and the exhaust flow,
A first plate portion provided with an air supply air inlet and an exhaust air outlet, a second plate portion provided with an air supply air outlet and an exhaust air inlet, the first plate portion and the second plate portion. It has a third plate portion and a fourth plate portion provided so as to face each other with the plate portion of the air supply port, and the air supply outlet through the heat exchanger from the air supply suction port. A housing in which an air supply air passage which is a path of the air supply air flow toward the air supply air passage and an exhaust air passage which is a path of the exhaust air flow from the exhaust suction port to the exhaust air outlet through the heat exchanger are formed. ,
Between the first plate portion and the heat exchanger, the air supply air that penetrates the exhaust air passage from the fourth plate portion and is on the side of the third plate portion with respect to the exhaust air passage. The air supply filter inserted into the road and
Between the second plate portion and the heat exchanger, the exhaust air that penetrates the air supply air passage from the fourth plate portion and is on the side of the third plate portion with respect to the air supply air passage. The exhaust filter inserted into the road and
Equipped with a,
The air supply filter
A filter unit having a filter mesh capable of filtering foreign matter from the air supply airflow from the air supply suction port to the heat exchanger, and a filter unit.
An open portion through which the exhaust flow from the heat exchanger to the exhaust outlet passes, and
A partition portion that partitions the filter portion and the open portion and that protrudes from the outer frame of the air supply filter and separates the air supply air passage and the exhaust air passage.
Have,
The exhaust filter is
A filter unit having a filter mesh capable of filtering foreign matter from the exhaust flow from the exhaust suction port to the heat exchanger.
An open portion through which the air supply airflow from the heat exchanger to the air supply outlet passes,
A partition portion that partitions the filter portion and the open portion and that protrudes from the outer frame of the exhaust filter and separates the air supply air passage and the exhaust air passage.
Heat exchange ventilator according to claim Rukoto to have a. The heat exchange ventilation device according to claim 1 , wherein a region surrounded by the open portion of the air supply filter is partitioned in a grid pattern. The heat exchange ventilation device according to claim 1 , wherein a region surrounded by the open portion of the exhaust filter is partitioned in a grid pattern. The housing is provided at the end of the open portion of the air supply filter on the side of the fourth plate portion and at the end of the open portion of the exhaust filter on the side of the fourth plate portion. When the posture of is the first posture in which the fourth plate portion is directed downward, the posture is tilted with respect to the horizontal plane, and the posture of the housing is the second posture in which the first plate portion is directed downward. The heat exchange ventilation device according to any one of claims 1 to 3, wherein an inclined portion inclined with respect to a vertical surface is provided at a time. A first drain receiver, which is provided at a position of the fourth plate portion facing the heat exchanger and can hold drain water,
A second drain receiver provided in the air supply air passage and the exhaust air passage between the first plate portion and the heat exchanger and capable of holding drain water, and
With
In the inclined portion of the air supply filter, when the posture of the housing is the first posture, the side of the first drain receiving side is downward, and the posture of the housing is the second posture. At one point, the slope was made toward the second drain receiver ,
The fourth aspect of claim 4, wherein the inclined portion of the exhaust filter is inclined so that the side of the first drain receiving side is downward when the posture of the housing is the first posture. Heat exchange ventilation system. The heat exchange ventilation device according to any one of claims 1 to 5, wherein a filter mesh capable of filtering foreign matter is provided in the open portion of the exhaust filter.

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