JP2012159208A - Ventilating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilating apparatus, capable of switching, e.g., between a dehumidification operation and a ventilation operation using one apparatus, while preventing complexity of an apparatus configuration.SOLUTION: The ventilating apparatus 1 includes inside a case 2: a heat exchanger 5 that allows heat exchange between air sucked from the outdoor to the inside of the case 2 and air sucked from the indoor to the inside of the case 2; a humidity control rotor 6 that has a humidity control body 6a for controlling humidity of air passing therethrough; a first heating device 7 that heats air flowing through a first air passage 12; a second heating device 8 that heats air flowing through a second air passage 13; and a heat-exchange state switching mechanism T that switches between a heat-exchange performing state and a heat-exchange stopping state, the heat-exchange performing state providing heat exchange between the air sucked from the outdoor to the inside of the case 2 and the air sucked from the indoor to the inside of the case 2 at the heat exchanger 5, the heat-exchange stopping state stopping the heat exchange between the air sucked from the outdoor to the inside of the case 2 and the air sucked from the indoor to the inside of the case 2 at the heat exchanger 5.

Description

  In the present invention, a first ventilation air passage through which air supplied to the room flows and a second ventilation air passage through which air exhausted from the room flows are formed inside the housing, and the housing The present invention relates to a ventilator that performs a ventilation operation in which air sucked into a room is supplied to a room through a first ventilation air passage and air sucked into the housing from the room is discharged to the outside through a second air ventilation path.

  The ventilation apparatus described in Patent Document 1 includes one heating means and one humidity control rotor. In the first embodiment of Patent Document 1, a device configuration of a ventilation device for performing dehumidification ventilation operation is illustrated. In contrast, in the second embodiment of Patent Document 1, a device configuration of a ventilator for performing a humidified ventilation operation (that is, a device configuration different from the first embodiment) is exemplified. Specifically, in Patent Document 1, the positional relationship among the heat exchanger (25), the heating means (12, 40) and the humidity control rotor (L) provided inside the ventilation device is the same as that in the first embodiment. Although not changed between the second embodiment, the positions of the outside air inlet (1), the air supply / outlet (2), the inside air inlet (3), and the exhaust outlet (4) are the same as those in the first embodiment. It is changed between the second embodiment. That is, the device configuration is changed outside the ventilation device. As described above, the ventilator described in Patent Document 1 has a configuration in which a single ventilator cannot be operated while switching between a plurality of operation modes (for example, dehumidification ventilation operation and humidification ventilation operation).

JP 2008-145019 A

  As described above, the ventilator described in Patent Literature 1 cannot be operated while switching a plurality of operation modes with one ventilator due to the device configuration. For example, if two humidity control rotors and three heating means are provided and the operation states are switched separately, it is possible to operate while switching between the dehumidification ventilation operation and the humidification ventilation operation with one ventilation device. However, there is a problem that the device configuration inside the ventilator is significantly more complicated than that of the ventilator described in Patent Document 1, for example, and the device cost increases.

  The present invention has been made in view of the above-mentioned problems, and the object thereof can be implemented by switching between, for example, dehumidification ventilation operation and humidification ventilation operation with a single device while suppressing the complexity of the device configuration. The point is to provide a ventilation device.

In order to achieve the above object, the ventilator according to the present invention is characterized in that a first ventilation air passage through which air supplied to the room flows and air exhausted from the room flow inside the housing. A second ventilation air passage is formed, and the air sucked into the housing from outside the room is supplied to the room through the first ventilation air passage, and the air sucked into the housing from the room inside A ventilator for performing a ventilating operation for discharging to the outside through the second ventilation air passage,
The first passage has a first passage that constitutes a part of the first ventilation air passage and a second passage that constitutes a part of the second ventilation air passage. A heat exchanger that allows heat exchange between the air sucked into the housing from the outside and the air sucked into the housing from the room, and the air passing between the second passage and the second passage A humidity control body for adjusting the humidity, a humidity control rotor having a rotation drive means for rotating the humidity control body, and a first heating capable of heating the air flowing through the first ventilation air passage by heating. Means, second heating means capable of heating the air flowing through the second ventilation air passage by heating operation, air sucked into the housing from the outside in the heat exchanger, and from the room A heat exchange state in which heat exchange with the air sucked into the housing is performed. In the heat exchanger, a heat exchange state switching mechanism for switching between a heat exchange stopped state in which heat exchange between the air sucked into the housing from the outside and the air sucked into the housing from the room is stopped in the heat exchanger It is in the point provided with.

According to the above characteristic configuration, whether or not the first heating means is heated, whether or not the second heating means is heated, and the air sucked into the housing from the outside and the inside of the housing from the inside Whether or not to exchange heat with the air sucked into the heat exchanger can be switched separately. As a result, operations such as dehumidification ventilation operation that dehumidifies the air sucked into the housing from the outside and supplies it into the room, humidification ventilation operation that humidifies the air sucked into the housing from the outside and supplies it into the room, etc. It can be implemented while switching with one ventilation device. Furthermore, although two heating means are required, the first heating means capable of heating the air flowing through the first ventilation air passage and the second heating means capable of heating the air flowing through the second ventilation air passage. The apparatus configuration is not significantly complicated as compared with the conventional example.
Therefore, it is possible to provide a ventilator that can be implemented by switching between, for example, dehumidification ventilation operation and humidification ventilation operation with a single device while suppressing the complexity of the device configuration.

Another characteristic configuration of the ventilation device according to the present invention is that the first ventilation air passage is configured such that the air sucked into the housing from the outside is a part of the first heating unit and the humidity control body. And the compartment is formed inside the housing so that the first passage of the heat exchanger flows in order and is supplied to the room.
In the second ventilation air passage, the air sucked into the housing from the room is the second passage of the heat exchanger, the second heating means, and the partial region of the humidity control body. Is formed in the inside of the housing so as to flow through other areas in order and to be discharged outside the room,
The humidity control rotor is disposed so that the partial area of the humidity control body is located in the first ventilation air passage and the other area is located in the second ventilation air passage. The part located in the first ventilation air passage and the part located in the second ventilation air passage in the wet body are operated by the rotation driving means so as to change as the humidity control body rotates.

  According to the above characteristic configuration, the first ventilation air passage that feeds the air sucked into the housing from the outside into the room and the second air that sucks the air sucked into the housing from the room to the outside. A ventilation air passage is formed inside the housing. In addition, whether to heat the first heating means, whether to heat the second heating means, and the air sucked into the housing from the outside and the air sucked into the housing from the inside By switching whether or not to exchange heat in the heat exchanger, moisture is supplied from the air flowing through the first airflow path to the air flowing through the second airflow path via the humidity control rotor And a state in which moisture is supplied from the air flowing through the second ventilation air passage to the air flowing through the first ventilation air passage through the humidity control rotor. As a result, operations such as dehumidification ventilation operation that dehumidifies the air sucked into the housing from the outside and supplies it into the room, humidification ventilation operation that humidifies the air sucked into the housing from the outside and supplies it into the room, etc. It can be implemented while switching with one ventilation device.

Still another characteristic configuration of the ventilating device according to the present invention is that the heat exchange state switching mechanism is configured such that the air flowing in the middle of at least one of the first ventilation air passage and the second ventilation air passage is the heat exchange. A bypass air path that bypasses the heat exchanger, and a bypass switching mechanism that switches whether or not the air flowing through bypasses the heat exchanger,
The heat exchange state is implemented by switching the bypass switching mechanism so that the flowing air does not bypass the heat exchanger, and the flowing air bypasses the heat exchanger through the bypass switching mechanism. It is in the point which implements the said heat exchange stop state by switching so.

  According to the above characteristic configuration, the bypass switching mechanism is switched between the heat exchange execution state and the heat exchange stop state by switching between whether the flowing air bypasses the heat exchanger or not. it can.

  Still another characteristic configuration of the ventilating apparatus according to the present invention is that the first heating means is not heated, the second heating means is heated, and the bypass switching mechanism has air flowing through it. The heat exchanger is switched to a state in which the heat exchanger is not bypassed, and the dehumidification ventilation operation is performed in a state in which heat is exchanged between the air flowing through the first passage and the air flowing through the second passage.

  According to the above characteristic configuration, the outside air sucked into the housing from the outside passes through the humidity control body without being heated by the first heating means. At this time, moisture held by the outside air is adsorbed by the humidity control body (that is, after the outside air is dehumidified) and reaches the first passage of the heat exchanger. In the heat exchanger, the outside air flowing through the first passage and the indoor air sucked from the room and flowing through the second passage exchange heat, and the temperature of the outside air approaches the temperature of the room air. Thereafter, the outside air that has exited from the first passage of the heat exchanger is supplied indoors. Accordingly, the air supplied to the room is air that has been dehumidified by the humidity control rotor and has a temperature difference reduced from that of the room air in the heat exchanger. The room air that has exited from the second passage of the heat exchanger is heated by the second heating means that is in a heating action state, and then passes through the humidity control body and is exhausted to the outside. At this time, the portion positioned in the second ventilation air passage of the humidity control rotor is dried by the indoor air heated by the second heating means (that is, the moisture held by the humidity control body is in the second ventilation air passage). Released to the air flowing through). Further, the humidity control rotor is operated by the rotation driving means so that the portion located in the first ventilation air passage and the portion located in the second ventilation air passage in the humidity adjustment body are changed as the humidity adjustment body rotates. Therefore, the portion heated and dried by the second heating means moves to the portion positioned in the first ventilation air passage in the humidity control body, and the outside air sucked into the housing from the outside Dehumidifying performance can be demonstrated. Thus, in the humidity control rotor, removal of moisture from the air flowing through the first ventilation air passage and release of moisture to the air flowing through the second ventilation air passage as the humidity control body rotates. And are repeated. Therefore, the ventilator can be continuously dehumidified and ventilated.

  Still another characteristic configuration of the ventilating apparatus according to the present invention is that the first heating means is heated, the second heating means is not heated, and the bypass switching mechanism has air flowing through it. It switches to the state which bypasses the said heat exchanger, and it exists in the point which performs humidification ventilation operation in the state which does not carry out heat exchange between the air which flows through the said 1st channel | path, and the air which flows through the said 2nd channel | path.

According to the above characteristic configuration, the outside air sucked into the housing from the outside passes through the humidity control body after being heated by the first heating means. At this time, the humidity control body is dried by air (high-temperature air) heated by the first heating means. That is, the air flowing through the first ventilation air passage is humidified by releasing the moisture held by the humidity control body, and the air flowing through the first ventilation air passage becomes high-temperature and high-humidity air. . Furthermore, since the bypass switching mechanism switches to a state in which heat exchange between the air flowing through the first passage and the air flowing through the second passage is not performed, the high-temperature and high-humidity air humidified by the humidity control body is high-temperature and high-humidity. It is supplied indoors in the state.
Further, the indoor air sucked from the room is not heat-exchanged with the high-temperature air heated by the first heating means as described above in the heat exchanger, and remains relatively low (that is, the relative humidity is high). Pass through the heat exchanger. Thereafter, the room air that has reached the downstream side of the heat exchanger passes through the second heating means in a heating stopped state, then passes through the humidity control body and is exhausted outside the room. As described above, the portion of the humidity control body that is positioned in the first ventilation air passage is dried by the air heated by the first heating means (hot air). Further, the humidity control rotor is operated by the rotation driving means so that the portion located in the first ventilation air passage and the portion located in the second ventilation air passage in the humidity adjustment body are changed as the humidity adjustment body rotates. Yes. That is, the portion of the humidity control body that has rotated to the second ventilation air passage is a portion that has been dried by the air heated by the first heating means (hot air). Therefore, in the portion located in the second ventilation air passage in the humidity control body, the adsorption of moisture held by the air passing through the second ventilation air passage (air with a high relative humidity) is promoted. Thereafter, the portion of the humidity control body that has adsorbed moisture with the rotation of the humidity control body is repositioned to the first ventilation air passage, where the moisture adsorbed from the air passing through the second ventilation air passage is changed to the first ventilation air flow. Used to humidify air flowing through the road. As described above, in the humidity control rotor, removal of moisture from the air flowing through the second ventilation air passage and release of moisture to the air flowing through the first ventilation air passage as the humidity control body rotates. And are repeated. Therefore, the ventilation device can be continuously operated with humidification ventilation.

  Still another characteristic configuration of the ventilating apparatus according to the present invention is that the first heating means is not heated, the second heating means is not heated, and the bypass switching mechanism passes through the air. Is switched to a state in which the heat exchanger is bypassed, and the non-heat exchange ventilation operation is performed in a state in which heat exchange between the air flowing through the first passage and the air flowing through the second passage is not performed.

According to the above-described characteristic configuration, by performing the non-heat exchange ventilation operation, it is possible to perform the ventilation operation in which the outside air sucked into the housing from the outside is supplied to the room at almost the same temperature and humidity.
In addition, when the operation of exchanging heat between the air flowing through the first passage and the air flowing through the second passage is performed by the heat exchanger instead of the non-heat exchange ventilation operation in this characteristic configuration, either There is also a possibility that moisture contained in the air condenses (that is, dew condensation) and blocks the first passage or the second passage of the heat exchanger. For example, when one of the outside air sucked into the housing from the outside and the room air sucked from the room is in a relatively high temperature and high humidity state, and the other air is in a relatively low temperature state, There is a possibility that moisture contained in air of relatively high temperature and high humidity may be condensed by heat exchange in the heat exchanger.
However, in this characteristic configuration, heat exchange between the air flowing through the first passage and the air flowing through the second passage is not performed in the heat exchanger by the operation of the bypass switching mechanism. Occurrence of a problem that the first passage or the second passage is blocked by the condensed water can be suppressed.

  Still another characteristic configuration of the ventilating apparatus according to the present invention is that the first heating means is not heated, the second heating means is not heated, and the bypass switching mechanism passes through the air. Is switched to a state in which the heat exchanger is not bypassed, and the heat exchange ventilation operation is performed in a state in which heat is exchanged between air flowing through the first passage and air flowing through the second passage, The condition of the air sucked into the casing from the inside of the room and the condition of the air sucked into the casing from the outside of the room satisfy the condition for causing condensation to occur due to heat exchange in the heat exchanger. And switching to the non-heat exchange ventilation operation.

By performing the heat exchange ventilation operation, the air sucked into the housing from the outside is supplied to the room after its temperature is brought close to the room temperature by heat exchange in the heat exchanger. Therefore, the indoor air can be ventilated with the air having no large temperature difference from the indoor air. However, when this heat exchange ventilation operation is performed, if heat exchange between the air flowing through the first passage and the air flowing through the second passage is performed in the heat exchanger, it is included in any air. There is also a possibility that the moisture that has been condensed condenses (that is, condensation) and blocks the first passage or the second passage of the heat exchanger.
However, according to this characteristic configuration, when the condition of the air sucked into the casing from the room and the condition of the air sucked into the casing from the outside satisfies the above condensation generation condition, the non-heat exchange ventilation described above. Switch to driving. As a result, it is possible to suppress the occurrence of the problem that the first passage or the second passage of the heat exchanger is blocked by the condensed water at an appropriate timing. In addition, it is possible to temporarily stop ventilation or to eliminate the need for heat input with warm water so as not to condense.

  Still another characteristic configuration of the ventilation device according to the present invention is that the bypass switching mechanism is a mechanism capable of blocking air flow in at least one of the first passage and the second passage of the heat exchanger. It is in.

  According to the above characteristic configuration, air that blocks the flow of air in at least one of the first passage and the second passage of the heat exchanger and flows through at least one of the first ventilation air passage and the second ventilation air passage. By switching the bypass switching mechanism so that the heat exchanger bypasses the heat exchanger, the air sucked into the housing from the outside in the heat exchanger (that is, the air flowing through the first ventilation air passage) and the housing from the room The heat exchange with the air sucked into the inside (that is, the air flowing through the second ventilation air passage) can be stopped.

It is a figure which shows the structure of a ventilation apparatus. It is a figure explaining operation | movement of a heat exchange state switching mechanism. It is a figure explaining dehumidification ventilation operation mode. It is a figure explaining humidification ventilation operation mode. It is a figure explaining sensible heat exchange ventilation operation mode. It is a figure explaining the dew condensation prevention ventilation operation mode. It is a figure explaining the structure of another heat exchange state switching mechanism. It is a figure explaining the structure of another heat exchange state switching mechanism. It is a figure explaining the structure of another heat exchange state switching mechanism. It is a figure explaining the structure of another heat exchange state switching mechanism.

The structure of the ventilator 1 according to the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram illustrating a configuration of the ventilation device 1. The ventilator 1 has a first ventilation air passage 12 through which air supplied to the room flows and a second ventilation air passage 13 through which air discharged from the room flows, inside the housing 2. Air sucked into the housing 2 from the outside is supplied to the room through the first ventilation air passage 12 and air sucked into the housing 2 from the room through the second ventilation air passage 13 is outdoors. This device performs ventilation operation. The housing 2 has an outside air inlet 14 for sucking outside air into the inside of the housing 2, and an air supply / outlet port for supplying outside air sucked into the inside of the housing 2 into the room as an air-conditioning target space. 15. An inside air suction port 16 for sucking room air into the housing 2 and an exhaust outlet 17 for discharging the room air sucked into the housing 2 to the outside as exhaust are formed. The ventilator 1 is disposed, for example, on the back of a ceiling of a house, and the air supply / exhaust port 15 and the inside air inlet 16 are connected to the indoor side from there, and the outside air inlet 14 and the exhaust outlet 17 are connected to the outdoor side.

  The ventilation device 1 includes an air supply fan 3, an exhaust fan 4, a heat exchanger 5, a humidity control rotor 6, a first heating unit 7, a second heating unit 8, ventilation, and the like inside the housing 2. And an operation control unit U that controls the operation of the device 1.

  The air supply fan 3 forms an air flow inside the housing 2 for supplying the outside air sucked into the housing 2 from the outside air inlet 14 into the room through the air supply / outlet 15. The air flow path formed inside the housing 2 by the air supply fan 3 becomes the first ventilation air path 12. The exhaust fan 4 forms an air flow inside the housing 2 for exhausting the room air sucked into the housing 2 from the inside air suction port 16 to the outside through the exhaust outlet 17. The air flow path formed inside the housing 2 by the exhaust fan 4 becomes the second ventilation air path 13.

  The heat exchanger 5 has a first passage 5e and a second passage 5f inside, respectively, and exchanges heat between air flowing through the first passage 5e and air flowing through the second passage 5f. In this embodiment, the heat exchanger 5 has a rectangular parallelepiped shape. One side surface of the rectangular parallelepiped is the first air inflow surface 5a, and the side surface opposite to the side surface is the first air outflow surface 5b. Inside the heat exchanger 5, a path between the first air inflow surface 5a and the first air outflow surface 5b is a first passage 5e. Further, a side surface different from the first air inflow surface 5a and the first air outflow surface 5b is a second air inflow surface 5c, and a side surface opposite to the side surface serving as the second air inflow surface 5c is the second air outflow surface 5d. It becomes. Inside the heat exchanger 5, a path between the second air inflow surface 5c and the second air outflow surface 5d is a second passage 5f. Thus, in the heat exchanger 5, the first passage 5e and the second passage 5f that are internal passages of the heat exchanger 5 are orthogonal to each other, and heat is exchanged between the fluids flowing through the passages. It is a sensible heat exchanger of the mold. Although not shown, the plurality of first passages 5e and the plurality of second passages 5f are formed alternately in the height direction with a partition wall using a material having high thermal conductivity such as aluminum.

  The humidity control rotor 6 includes a humidity control body 6a that controls the humidity of the passing air, and a rotation drive means 6b that rotates the humidity control body 6a. Specifically, the humidity control body 6a is configured by holding a moisture absorbing material (for example, silica gel, lithium chloride, etc.) on a honeycomb-shaped base material that is disk-shaped and is permeable in the axial direction. An example of the rotation driving means 6b for rotating the humidity control body 6a around the axis is an electric motor. The humidity control rotor 6 is arranged such that a part of the humidity control body 6a is located in the first ventilation air passage 12 and another area is located in the second ventilation air passage 13, and the humidity adjustment body 6a. The rotation driving means 6b is operated so that the portion positioned in the first ventilation air passage 12 and the portion positioned in the second ventilation air passage 13 are changed as the humidity control body 6a rotates.

  The 1st heating means 7 can heat the air which flows through the 1st ventilation air path 12 by carrying out a heating operation. For example, the first heating means 7 is formed by bending a heat medium flow pipe through which a heat medium supplied from a heat source (not shown) flows in a meandering manner. As a result, the air flowing in the vicinity of the serpentine portion is heated. Whether the first heating means 7 is heated (heating action state) or not heated (heating stopped state) is determined by whether the first heating means 7 is passed through the heating medium or not. Can be switched. The flow state of the heat medium in the first heating means 7 is controlled by the operation control unit U by switching a valve (not shown) provided in the heat medium flow pipe. The position where the first heating means 7 is provided is between the outside air inlet 14 and the humidity control rotor 6.

  The second heating means 8 can heat the air flowing through the second ventilation air passage 13 by heating. For example, the second heating means 8 is formed by bending a heat medium flow pipe through which a heat medium supplied from a heat source (not shown) flows in a meandering manner. As a result, the air flowing in the vicinity of the serpentine portion is heated. Whether the second heating means 8 is heated (heating operation state) or not heated (heating stopped state) is determined by whether the second heating means 8 is passed through the heating medium or not. Can be switched. The flow state of the heat medium in the second heating means 8 is controlled by the operation control unit U by switching a valve provided in the heat medium flow pipe. The position where the second heating means 8 is provided is between the heat exchanger 5 and the humidity control rotor 6.

  In the first ventilation air passage 12 inside the housing 2, the air taken in from the outside of the housing 2 through the outside air inlet 14 is a part of the first heating means 7, the humidity control body 6 a, and A compartment is formed inside the housing 2 so as to flow through the first passage 5e of the heat exchanger 5 in order and to be supplied into the room via the air supply / outlet 15. The second ventilation air passage 13 is configured such that the air taken out from the room through the inside air intake port 16 is the above-mentioned partial region of the second passage 5f of the heat exchanger 5, the second heating means 8, and the humidity control body 6a. A compartment is formed inside the housing 2 so as to flow through another region in order and to be discharged to the outside through the exhaust outlet 17. Specifically, the inside of the housing 2 is partitioned using a fixed partition wall 9. In the present embodiment, the upper surface of the heat exchanger 5 does not reach the ceiling portion inside the housing 2 of the ventilation device 1, and the top of the heat exchanger 5 and the ceiling portion inside the housing 2 There is a space between them. However, as shown in FIG. 2, the fixed partition wall 9 is provided so as to be flush with the second air inflow surface 5c of the heat exchanger 5, and the same surface as the second air outflow surface 5d of the heat exchanger 5 is provided. By providing the fixed partition wall 9 in such a manner, the space C and the space D inside the housing 2 are isolated from the space between the upper part of the heat exchanger 5 and the ceiling portion inside the housing 2. . As described above, the air flow between the space A and the space B constituting the first ventilation air passage 12 within the housing 2 is performed between the space C and the space D constituting the second ventilation air passage 13. No.

  The ventilator 1 of the present embodiment includes a first temperature / humidity sensor 18 capable of detecting the temperature and humidity of the outside air sucked into the housing 2 from the outside air inlet 14, and the inside of the housing 2 from the inside air inlet 16. And a second temperature / humidity sensor 19 capable of detecting the temperature and humidity of the indoor air sucked in. Specifically, the first temperature / humidity sensor 18 can detect the temperature and humidity of the outside air sucked into the housing 2 from the outside air inlet 14, that is, the outside air inlet 14 and the first heating means. 7 is provided in the first ventilation air passage 12. The second temperature / humidity sensor 19 is located at a position where the temperature and humidity of the indoor air sucked into the housing 2 from the inside air suction port 16 can be satisfactorily detected, that is, between the inside air suction port 16 and the heat exchanger 5. It is provided in the second ventilation air passage 13. The detection results of the first temperature / humidity sensor 18 and the second temperature / humidity sensor 19 are transmitted to the operation control unit U.

  The air flow between the space A and the space B constituting the first ventilation air passage 12 is the first passage 5e inside the heat exchanger 5 existing between them or the upper part of the heat exchanger 5. It is realized by switching by any of the bypass air passages 11 existing in the. Air flow between the space C and the space D constituting the second ventilation air passage 13 is performed by the second passage 5f inside the heat exchanger 5 existing between the two.

  The ventilation device 1 according to the present invention includes a heat exchange execution state in which heat exchange is performed between the air sucked into the housing 2 from the outside in the heat exchanger 5 and the air sucked into the housing 2 from the room, The heat exchanger 5 has a heat exchange state switching mechanism T that switches between the heat sucked into the housing 2 from the outside of the heat exchanger 5 and the heat exchange stopped state for stopping the heat exchange between the air sucked into the housing 2 from the room. . In the present embodiment, the heat exchange state switching mechanism T includes a bypass air passage 11 that bypasses the heat exchanger 5 in the middle of the first ventilation air passage 12, and the air that flows through the heat exchanger 5. And a bypass switching mechanism M for switching whether or not to bypass.

  Next, the bypass air passage 11 and the bypass switching mechanism M as the heat exchange state switching mechanism T will be described. FIG. 2 is a view of the heat exchanger 5 as viewed from an oblique direction of the ventilator 1, and is a view for explaining the operation of the bypass switching mechanism M.

  FIG. 2A shows a state in which the air in the first ventilation air passage 12 flows through the first passage 5e of the heat exchanger 5 because the bypass air passage 11 is closed. On the other hand, FIG. 2B shows that the bypass air passage 11 is open (that is, the first passage 5e of the heat exchanger 5 is closed), so that the air in the first ventilation air passage 12 is bypassed. The state which flows through the path | route 11 is shown. Switching between opening and closing of the bypass air passage 11 is performed by moving the movable member 10 as the bypass switching mechanism M up and down. The movable member 10 is a plate-like lid member that can cover the first passage 5e from the outside of the heat exchanger 5. As a mechanism for moving the movable member 10 up and down, for example, a mechanism in which rails 20 are provided on both sides of the movable member 10 and the movable member 10 is slid along the rail 20 by power such as an electric motor 21 is used. Is possible. In the present embodiment, the operation of the movable member 10 is controlled by the operation control unit U.

When the movable member 10 moves upward, the state shown in FIG. 2A is obtained, so that air flows through the first passage 5e of the heat exchanger 5. That is, in the heat exchanger 5, the air flowing through the first passage 5 e that is a part of the first ventilation air passage 12 and the air flowing through the second passage 5 f that is a part of the second ventilation air passage 13 are generated. Exchange heat.
On the other hand, when the movable member 10 moves downward, the state shown in FIG. 2B (that is, the bypass air passage 11 becomes a part of the first ventilation air passage 12). Flows through the bypass air passage 11 above the heat exchanger 5, and no air flows through the first passage 5e. That is, air flows in the second passage 5f of the heat exchanger 5, but air does not flow in the first passage 5e, so heat exchange is not performed in the heat exchanger 5.
As described above, the movable member 10 serves to close the bypass air passage 11 as shown in FIG. 2A and open the first air inflow surface 5a (first passage 5e) of the heat exchanger 5. And the role of opening the bypass air passage 11 as shown in FIG. 2B and closing the first air inflow surface 5a (first passage 5e) of the heat exchanger 5 alternately. . The cross-sectional shape of the bypass air passage 11 and the shape of the first air inflow surface 5 a of the heat exchanger 5 are substantially the same so that both can be covered with the movable member 10.

Next, an example in which the ventilation device 1 is operated while switching to any of a plurality of operation modes will be described.
The ventilation device 1 can be operated in a plurality of operation modes by controlling the operations of the first heating means 7, the second heating means 8, and the bypass switching mechanism M as the heat exchange state switching mechanism T. Below, the several operation mode which the operation control part U switches and implements is demonstrated. When the user of the ventilator 1 issues an execution command for each operation mode using an operation input unit (not shown), the operation control unit U performs an operation in the operation mode corresponding to the execution command. Alternatively, the operation control unit U may automatically switch the operation mode based on the temperature and humidity of the outside air sucked into the housing 2 from the outside air inlet 14 and the room air sucked from the inside air inlet 16. Do.
In the following description, the operation control unit U operates the ventilation device 1 in any one of the dehumidification ventilation operation mode, the humidification ventilation operation mode, the sensible heat exchange ventilation operation mode, the dew condensation prevention ventilation operation mode, and the heat exchange stop ventilation operation mode. An example of driving by switching to will be described.

<Dehumidification ventilation operation mode>
FIG. 3 is a diagram illustrating a state in which the ventilator 1 is in a dehumidifying ventilation operation. In FIG. 3, the second heating means 8 in the heating operation state and the heat exchanger 5 in the heat exchange execution state are colored, and the first heating means 7 in the heating stop state is not colored. In addition, the structure of the ventilation apparatus 1 is partially simplified and illustrated.

  When the user of the ventilation device 1 uses the operation input unit (not shown) to execute the dehumidification / ventilation operation mode execution command, the operation control unit U stops the first heating means 7 in a heating stopped state according to the command. The second heating means 8 is brought into a heating action state, and the bypass air passage 11 is closed as shown in FIG. 2A (that is, by opening the first passage 5e of the heat exchanger 5, The movable member 10 is operated so that the air flowing through the first passage 5e and the air flowing through the second passage 5f exchange heat). That is, outside air sucked into the inside of the housing 2 from the outside air inlet 14 passes through the humidity control body 6 a without being heated by the first heating means 7. At this time, the moisture held by the outside air reaches the first passage 5e of the heat exchanger 5 after being adsorbed by the humidity control body 6a (that is, after the outside air has been dehumidified). In the heat exchanger 5, the outside air flowing through the first passage 5 e and the room air sucked from the inside air suction port 16 and flowing through the second passage 5 f exchange heat, and the temperature of the outside air is the temperature of the room air. Get closer to. Thereafter, the outside air that has exited from the first passage 5 e of the heat exchanger 5 is supplied into the room from the air supply / outlet 15. Therefore, the air supplied into the room through the air supply / outlet 15 is air (medium temperature and low humidity air) dehumidified in the humidity control rotor 6 and the temperature difference with the room air being reduced in the heat exchanger 5. In addition, the indoor air that has exited from the second passage 5f of the heat exchanger 5 is heated by the second heating means 8 that is in a heating action state, and then passes through the humidity control body 6a and passes through the exhaust outlet 17 to the outside of the room. Exhausted. At this time, the portion of the humidity control rotor 6 positioned in the second ventilation air passage 13 is dried by the room air heated by the second heating means 8 (that is, the moisture held by the humidity control body 6a is the first 2 is released with respect to the air flowing through the ventilation path 13). Furthermore, the humidity control rotor 6 is rotationally driven so that the portion positioned in the first ventilation air passage 12 and the portion positioned in the second ventilation air passage 13 of the humidity adjustment body 6a are changed as the humidity adjustment body 6a rotates. Since it is operated by the means 6b, the part heated and dried by the second heating means 8 is then moved to the part located in the first ventilation air passage 12 in the humidity control body 6a to suck in the outside air The dehumidifying performance with respect to the outside air sucked into the housing 2 from the mouth 14 can be exhibited. As described above, in the humidity control rotor 6, moisture is removed from the air flowing through the first ventilation air passage 12 and the air flowing through the second ventilation air passage 13 as the humidity adjustment body 6 a rotates. The release of water is repeated.

<Humidification ventilation operation mode>
FIG. 4 is a diagram illustrating a state in which the ventilation device 1 is in a humidified ventilation operation. In FIG. 4, the first heating means 7 in the heating operation state is colored, and the second heating means 8 in the heating stop state and the heat exchanger 5 in the heat exchange stop state are not colored. In addition, the structure of the ventilation apparatus 1 is partially simplified and illustrated.

  When the user of the ventilation device 1 uses the operation input unit (not shown) to execute the humidification ventilation operation mode execution command, the operation control unit U causes the first heating unit 7 to be in a heating action state according to the command. The second heating means 8 is brought into a heating stop state, and the bypass air passage 11 is opened as shown in FIG. 2B (that is, the first passage 5e of the heat exchanger 5 is closed, The movable member 10 is operated so that the air flowing through the first passage 5e and the air flowing through the second passage 5f are not subjected to heat exchange. That is, outside air sucked into the inside of the housing 2 from the outside air inlet 14 is heated by the first heating means 7 and then passes through the humidity control body 6a. At this time, the humidity control body 6a is dried by air (high-temperature air) heated by the first heating means 7. That is, the air flowing through the first ventilation air passage 12 is humidified by releasing moisture held by the humidity control body 6a, so that the air flowing through the first ventilation air passage 12 is heated and humid. It becomes air. In the humidification ventilation operation mode, the bypass air passage 11 is opened and the first passage 5e of the heat exchanger 5 is closed. Therefore, the high-temperature and high-humidity air humidified by the humidity control body 6a cannot enter the first passage 5e of the heat exchanger 5, passes through the bypass air passage 11 above the heat exchanger 5, and is in a high-temperature and high-humidity state. The air is supplied into the room from the air supply / outlet 15 as it is.

  The room air sucked from the inside air suction port 16 flows through the second passage 5 f of the heat exchanger 5. However, since air does not flow through the first passage 5e of the heat exchanger 5, between the air flowing through the second passage 5f of the heat exchanger 5 and the air existing (that is, staying) in the first passage 5e. There is almost no heat exchange. That is, the indoor air sucked from the inside air inlet 16 is not heat-exchanged with the high-temperature air heated by the first heating means 7 as described above, and remains relatively low (that is, the relative humidity is high). So far, it passes through the heat exchanger 5. After that, the room air that has exited from the second passage 5f of the heat exchanger 5 passes through the second heating means 8 in a heating stopped state, then passes through the humidity control body 6a, and is exhausted from the exhaust outlet 17 to the outside of the room. The As described above, the portion of the humidity control body 6 a located in the first ventilation air passage 12 is dried by the air (high temperature air) heated by the first heating means 7. Furthermore, the humidity control rotor 6 is rotationally driven so that the portion positioned in the first ventilation air passage 12 and the portion positioned in the second ventilation air passage 13 of the humidity adjustment body 6a are changed as the humidity adjustment body 6a rotates. It is operated by means 6b. That is, the portion of the humidity control body 6 a that has rotated to the second ventilation air passage 13 is a portion that is dried by the air (high-temperature air) heated by the first heating means 7. Therefore, in the part located in the 2nd ventilation air path 13 in the humidity control body 6a, adsorption | suction of the water | moisture content which the air which passes the 2nd ventilation air path 13 (air with relative humidity kept high) hold | maintains is accelerated | stimulated. Thereafter, the portion of the humidity control body 6a that has adsorbed moisture with the rotation of the humidity control body 6a is relocated to the first ventilation air passage 12, where the moisture adsorbed from the air passing through the second ventilation air passage 13 is absorbed. It is used for humidifying the air flowing through the first ventilation air passage 12. As described above, in the humidity control rotor 6, moisture is removed from the air flowing through the second ventilation air passage 13 and the air flowing through the first ventilation air passage 12 as the humidity adjustment body 6 a rotates. The release of water is repeated.

<Sensible heat exchange ventilation operation mode>
FIG. 5 is a diagram illustrating a state in which the ventilator 1 is in a sensible heat exchange ventilation operation (corresponding to the “heat exchange ventilation operation” of the present invention). In FIG. 5, the heat exchanger 5 in the heat exchange execution state is colored, and the first heating means 7 and the second heating means 8 in the heating stop state are not colored. In addition, the structure of the ventilation apparatus 1 is partially simplified and illustrated.

  When the user of the ventilation device 1 uses the operation input unit (not shown) to issue an execution command for the sensible heat exchange ventilation operation mode, the operation control unit U heats the first heating means 7 according to the command. The second heating means 8 is stopped and the bypass air passage 11 is closed (i.e., the first passage 5e of the heat exchanger 5 is opened to allow the first passage 5e to flow. The movable member 10 is operated so as to exchange heat between the air flowing through the second passage 5f. Since both the first heating means 7 and the second heating means 8 are in the heating stopped state, the moisture adjustment body 6a hardly absorbs or releases moisture. Therefore, humidification and dehumidification are hardly performed on the outside air sucked into the housing 2 from the outside air inlet 14. However, the outside air sucked into the inside of the housing 2 from the outside air inlet 14 flows through the first passage 5e of the heat exchanger 5, and the room air sucked into the inside of the housing 2 from the inside air inlet 16 is Since the second passage 5f of the heat exchanger 5 flows, the outside air sucked into the inside of the housing 2 from the outside air suction port 14 is brought close to the temperature of the room air, and then the air supply / outlet port 15 Supplied to the room. Therefore, the indoor air can be ventilated with the air having no large temperature difference from the indoor air.

<Condensation prevention ventilation operation mode>
FIG. 6 is a diagram illustrating a state in which the ventilation device 1 is in a dew condensation prevention ventilation operation (corresponding to the “non-heat exchange ventilation operation” of the present invention). In FIG. 6, the first heating means 7 and the second heating means 8 that are in a heating stopped state and the heat exchanger 5 that is in a heat exchange stopped state are not colored. In addition, the structure of the ventilation apparatus 1 is partially simplified and illustrated.

  In the dew condensation prevention ventilation operation mode, the operation control unit U causes the first heating means 7 to stop heating, causes the second heating means 8 to stop heating, and opens the bypass air passage 11 (that is, a heat exchanger). 5, the movable member 10 is operated so that the air flowing through the first passage 5e and the air flowing through the second passage 5f do not exchange heat). This dew condensation prevention ventilation operation mode is performed for the purpose of preventing moisture from condensing inside the heat exchanger 5 in summer or winter, for example. For example, in summer, indoor air that is being cooled may be at a lower temperature than the outside air, and the outside air may be at a high humidity. In this case, when room air and outside air flow into the heat exchanger 5 by performing the above-described sensible heat exchange ventilation operation mode, the high humidity outside air is cooled by the room air, and moisture contained in the outside air May condense (that is, dew condensation) inside the heat exchanger 5. In winter, the indoor air humidified by a humidifier or the like becomes high humidity, and the outside air may be cooler than the indoor air. In this case, when the indoor air and the outside air flow into the heat exchanger 5 by performing the sensible heat exchange ventilation operation mode, the high humidity indoor air is cooled by the outside air, and the moisture contained in the room air is reduced. There is a possibility of condensation inside the heat exchanger 5.

  Therefore, the operation control unit U performs the sensible heat exchange ventilation operation mode (corresponding to the “heat exchange ventilation operation” of the present invention) described above, and the state of the air sucked into the housing 2 from the room If the condition of the air sucked into the inside of the housing 2 from the outside meets the condition for the occurrence of dew condensation that can cause dew condensation due to heat exchange in the heat exchanger 5, the dew condensation prevention ventilation operation mode ("non-heat exchange of the present invention" Switch to “Ventilation operation”. The operation control unit U stores the dew generation condition in a storage device or the like in advance, and can read it out as appropriate. Specifically, the operation control unit U sucks the detection result of the first temperature / humidity sensor 18 that can detect the temperature and humidity of the outside air sucked into the housing 2 from the outside, and sucked the inside of the housing 2 from the inside. Based on the detection result of the second temperature / humidity sensor 19 that can detect the temperature and humidity of the indoor air, condensation can occur in any combination of the temperatures and humidity due to heat exchange in the heat exchanger 5. When it is determined that the condensation generation condition is satisfied, the operation is automatically switched to the ventilation operation in the condensation prevention ventilation operation mode. For example, the operation control unit U is in a state where the outside air is relatively hot and humid (the temperature of the outside air detected by the first temperature and humidity sensor 18 is not less than the first set temperature and the humidity is not less than the first set humidity). Yes, and when the room air is in a relatively low temperature state (the temperature of the room air detected by the second temperature and humidity sensor 19 is equal to or lower than the second set temperature), it is determined that the dew condensation generation condition is satisfied. Alternatively, the operation control unit U is in a state where the outside air is relatively cold (the temperature of the outside air detected by the first temperature / humidity sensor 18 is equal to or lower than the third set temperature), and the room air is relatively hot. It is determined that the dew condensation generation condition is satisfied when the humidity is in the room (the temperature of the indoor air detected by the second temperature / humidity sensor 19 is equal to or higher than the fourth set temperature and the humidity is equal to or higher than the fourth set humidity). Moreover, the operation control unit U returns the operation mode of the ventilator 1 to the sensible heat exchange ventilation operation mode when the period in which the dew condensation occurrence condition is not satisfied continues for the set period or longer when the condensation prevention ventilation operation is being performed.

  When the operation control unit U switches to the dew condensation prevention ventilation operation mode, the state of the air sucked into the housing 2 from the room is determined from the temperature of the room air detected by the second temperature / humidity sensor 19 or Whether it is determined from humidity or both, and the state of the air sucked into the housing 2 from the outside is determined from the temperature of the outside air detected by the first temperature / humidity sensor 18 or from the humidity Whether to judge from both or both can be appropriately changed. Further, temperature and humidity values (for example, the first set temperature, the first set humidity, the second set temperature, the third set temperature, and the fourth set as described above) that serve as a reference when it is determined that the dew condensation occurrence condition is satisfied. The temperature and the fourth set humidity) can be set as appropriate.

<Heat exchange stop ventilation operation mode>
When the user of the ventilation device 1 uses the operation input unit (not shown) to issue an execution command for the heat exchange stop ventilation operation mode, the operation control unit U heats the first heating means 7 according to the command. The second heating means 8 is stopped and the bypass air passage 11 is opened (i.e., the first passage 5e of the heat exchanger 5 is closed to flow through the first passage 5e. The movable member 10 is operated so as not to exchange heat between the air flowing through the second passage 5f. That is, the state of the 1st heating means 7, the state of the 2nd heating means 8, and the open / close state of the bypass air passage 11 are the same as in the case of the dew condensation prevention ventilation operation mode described above. However, the dew condensation prevention ventilation operation mode described above was automatically switched when the operation control unit U determined that the dew condensation occurrence condition was satisfied when the sensible heat exchange ventilation operation mode was being performed. The heat exchange stop ventilation operation mode is performed when there is an execution command from the user of the ventilation device 1. That is, when the user of the ventilator 1 instructs, for example, “ventilation operation without heat exchange” using the operation input unit (not shown), the operation control unit U responds to this command with this heat exchange stop ventilation. The ventilation device 1 is operated in the operation mode.

  As described above, when the ventilation device 1 according to the present invention is used, a plurality of operation modes (for example, dehumidification ventilation operation mode, humidification ventilation operation mode, sensible heat exchange ventilation operation mode, dew condensation prevention ventilation operation mode, heat exchange stop ventilation) The operation mode can be performed while switching with one device. Furthermore, although the two heating means of the 1st heating means 7 and the 2nd heating means 8 are needed inside the housing | casing 2 of the ventilation apparatus 1, the apparatus structure may become significantly complicated compared with a prior art example. Absent.

<Another embodiment>
<1>
In the above embodiment, the heat exchange state switching mechanism T has been described as an example of the bypass switching mechanism M configured using a single plate-like lid member (movable member 10). The configuration of can be changed as appropriate. 7-10 is a figure explaining the structure of the heat exchange state switching mechanism T different from what was demonstrated in the said embodiment. In the following description, only the fact that the heat exchange execution state and the heat exchange stop state can be switched and executed will be described, and the individual description of the operation mode described above will be omitted.

  The bypass switching mechanism M as the heat exchange state switching mechanism T shown in FIG. 7 is configured using the movable member 25 and the electric roll screen unit R. Specifically, the roll screen unit R includes a rotatable shaft 23, a screen 24 wound around the shaft 23, and an electric motor 22 that rotates the shaft 23. The shaft 23 is installed near the top of the heat exchanger 5. The movable member 25 is mounted in the vicinity of the upper end side of the first air inflow surface 5a of the heat exchanger 5 and can swing around the swing axis. Although not shown, an electric motor for swinging the movable member 25 is also provided.

  FIG. 7A shows that the bypass air 11 is closed and the first passage 5e of the heat exchanger 5 is open, so that the outside air sucked into the housing 2 from the outside air suction port 14 is heat exchanged. The state (heat exchange implementation state) which flows only the 1st channel | path 5e of the container 5 is shown. In this state, the operation control unit U operates the movable member 25 to a position where the bypass air passage 11 is closed, that is, a posture facing vertically upward. The operation control unit U operates the electric motor 22 to wind up the screen 24 to the top. Since the shaft 23 is installed near the uppermost part of the heat exchanger 5, when the screen 24 wound around the shaft 23 is wound up to the uppermost part, the first air inflow surface 5a of the heat exchanger 5 is maximized. Released. As a result, the bypass air passage 11 is closed and the first passage 5e is opened to the maximum at the first air inflow surface 5a of the heat exchanger 5, that is, the outside air sucked from the outside air inlet 14 is heat exchanger. 5 passes through the inside (first passage 5e) of the heat exchanger 5 and exchanges heat with the air flowing through the second passage 5f of the heat exchanger 5, and then is supplied into the room.

  FIG. 7B shows that the bypass air passage 11 is opened and the first passage 5e of the heat exchanger 5 is closed, so that the outside air sucked into the housing 2 from the outside air suction port 14 is bypass air. The state (heat exchange stop state) which flows only the path 11 is shown. In this state, the operation control unit U operates the movable member 25 to a position where the bypass air passage 11 is opened, that is, for example, a posture along the horizontal direction. In addition, the operation control unit U operates the electric motor 22 to lower the screen 24 to the lowermost part. Since the shaft 23 is installed near the uppermost part of the heat exchanger 5, when the screen 24 wound around the shaft 23 is rolled down to the lowermost part, the first air inflow surface 5a of the heat exchanger 5 becomes the screen. 24 will be completely obscured. As a result, the bypass air passage 11 is opened and the first passage 5 e is closed at the first air inflow surface 5 a of the heat exchanger 5, that is, the outside air sucked from the outside air inlet 14 is inside the heat exchanger 5. It passes through the upper bypass air passage 11 without passing through the (first passage 5e) and is supplied to the room without performing heat exchange with the air flowing through the second passage 5f of the heat exchanger 5. become.

  In the example shown in FIG. 7, for example, the heat exchanger 5 can be lengthened in the height direction as compared with the example shown in FIG. 2, so that the air flowing through the first passage 5e and the second passage 5f flow. Heat exchange efficiency with air can be increased. In other words, the cross-sectional shape of the bypass air passage 11 and the shape of the first air inflow surface 5a of the heat exchanger 5 do not have to be substantially the same, and the area of the first air inflow surface 5a of the heat exchanger 5 is bypassed. It can be made larger than the cross-sectional area of the air passage 11. This is because the role for closing the bypass air passage 11 and the role for closing the first air inflow surface 5a (first passage 5e) of the heat exchanger 5 are separate members (movable member 25, roll screen). This is because it is carried by the unit R). On the other hand, in the example shown in FIG. 2, one member (movable member 10) closes the bypass air passage 11 and the first air inflow surface 5 a (first passage 5 e) of the heat exchanger 5. Since it must function both in the closed state, the cross-sectional shape of the bypass air passage 11 and the shape of the first air inflow surface 5a of the heat exchanger 5 are substantially the same shape (that is, the shape of the movable member 10). Had to be.

  A bypass switching mechanism M as the heat exchange state switching mechanism T shown in FIG. 8 is configured using a movable member 26 and a movable member 27. Specifically, the movable member 26 is mounted in the vicinity of the upper end side of the first air inflow surface 5a of the heat exchanger 5, and can swing around the swing axis. The movable member 27 is mounted in the vicinity of the lower end side of the first air inflow surface 5a of the heat exchanger 5, and can swing around the swing axis. Although not shown, an electric motor for swinging the movable member 26 and an electric motor for swinging the movable member 27 are also provided. In addition, when the movable member 26 and the movable member 27 are swung, it is necessary to design the position and size of each member including the movable members 26 and 27 so as not to interfere with other members inside the housing 2. There is. Further, when the bypass switching mechanism M as the heat exchange state switching mechanism T shown in FIG. 8 is adopted, the heat exchanger 5 is compared with the example shown in FIG. 2, for example, similarly to the example shown in FIG. Since it can be lengthened in the height direction, the heat exchange efficiency between the air flowing through the first passage 5e and the air flowing through the second passage 5f can be increased.

  FIG. 8A shows the heat exchange of the outside air sucked into the housing 2 from the outside air inlet 14 because the bypass air passage 11 is closed and the first passage 5e of the heat exchanger 5 is opened. The state (heat exchange implementation state) which flows only the 1st channel | path 5e of the container 5 is shown. In this state, the operation control unit U operates the movable member 26 to a position where the bypass air passage 11 is closed, that is, a posture facing vertically upward. Further, the operation control unit U operates the movable member 27 in a position where the first air inflow surface 5a of the heat exchanger 5 is opened, that is, preferably in a posture along the horizontal direction. As a result, the bypass air passage 11 is closed and the first passage 5 e is opened at the first air inflow surface 5 a of the heat exchanger 5, that is, the outside air sucked from the outside air inlet 14 is inside the heat exchanger 5. After passing through (the first passage 5e) and exchanging heat with the air flowing through the second passage 5f of the heat exchanger 5, the air is supplied to the room.

  FIG. 8B shows that the bypass air passage 11 is opened and the first passage 5e of the heat exchanger 5 is closed, so that the outside air sucked into the housing 2 from the outside air inlet 14 is bypass air. The state (heat exchange stop state) which flows only the path 11 is shown. In this state, the operation control unit U moves the movable member 26 to a position where the bypass air passage 11 is opened and the upper region of the first air inflow surface 5a of the heat exchanger 5 is closed, that is, a posture directed vertically downward. Make it work. Further, the operation control unit U moves the movable member to a position where the lower region of the first air inflow surface 5a of the heat exchanger 5 is closed, that is, a posture directed vertically upward. As a result, the first air inflow surface 5 a of the heat exchanger 5 is completely covered with a plurality of lid members including the movable member 26 and the movable member 27. The outside air sucked from the outside air inlet 14 does not pass through the inside of the heat exchanger 5 (first passage 5e) but passes through the upper bypass air passage 11 and passes through the second passage 5f of the heat exchanger 5. The air is supplied into the room without exchanging heat with the flowing air.

  A bypass switching mechanism M as the heat exchange state switching mechanism T shown in FIG. 9 is configured using movable members 28, 29, and 30. Specifically, the movable member 28 is mounted in the vicinity of the upper end side of the first air inflow surface 5a of the heat exchanger 5 and can swing about the swing axis. The movable member 29 is mounted in the vicinity of one side end of the first air inflow surface 5a of the heat exchanger 5, and can be swung around the swing axis. The movable member 30 is mounted in the vicinity of the other side end of the first air inflow surface 5a of the heat exchanger 5, and can swing about the swing axis. Although not shown, an electric motor for swinging the movable member 28, an electric motor for swinging the movable member 29, and an electric motor for swinging the movable member 30 are also provided. It has been. In addition, when the movable member 28 and the movable member 29 are swung, it is necessary to design the position and size of each member including the movable members 28 and 29 so as not to interfere with other members inside the housing 2. There is. However, in the example shown in FIG. 9, since the movable members 29 and 30 have a so-called double door structure that opens and closes in the lateral direction, the space in front of the first air inflow surface 5a may be relatively small. . Moreover, also when the bypass switching mechanism M as the heat exchange state switching mechanism T shown in FIG. 9 is adopted, the heat exchanger 5 is compared with the example shown in FIG. 2, for example, similarly to the example shown in FIG. Since it can be lengthened in the height direction, the heat exchange efficiency between the air flowing through the first passage 5e and the air flowing through the second passage 5f can be increased.

  In FIG. 9A, the bypass air passage 11 is closed and the first passage 5e of the heat exchanger 5 is opened, so that the outside air sucked into the housing 2 from the outside air suction port 14 is subjected to heat exchange. The state (heat exchange implementation state) which flows only the 1st channel | path 5e of the container 5 is shown. In this state, the operation control unit U operates the movable member 28 to a position where the bypass air passage 11 is closed, that is, a posture facing vertically upward. Further, the operation control unit U operates the movable members 29 and 30 to a position where the first passage 5e is opened on the first air inflow surface 5a of the heat exchanger 5. As a result, the bypass air passage 11 is closed and the first passage 5e of the heat exchanger 5 is opened, that is, the outside air sucked from the outside air inlet 14 passes through the inside of the heat exchanger 5 (first passage 5e). After passing through and exchanging heat with the air flowing through the second passage 5f of the heat exchanger 5, the air is supplied into the room.

  FIG. 9B shows that the bypass air passage 11 is opened and the first passage 5e of the heat exchanger 5 is closed, so that the outside air sucked into the housing 2 from the outside air inlet 14 is bypass air. The state (heat exchange stop state) which flows only the path 11 is shown. In this state, the operation control unit U operates the movable member 28 to a position where the bypass air passage 11 is opened, that is, for example, a posture along the horizontal direction. In addition, the operation control unit U operates the movable members 29 and 30 to a position where the entire first air inflow surface 5a of the heat exchanger 5 is closed. As a result, the first air inflow surface 5 a of the heat exchanger 5 is completely covered with a plurality of lid members, which are the movable member 29 and the movable member 30. The outside air sucked from the outside air inlet 14 does not pass through the inside of the heat exchanger 5 (first passage 5e) but passes through the upper bypass air passage 11 and passes through the second passage 5f of the heat exchanger 5. The air is supplied into the room without exchanging heat with the flowing air.

  The heat exchange state switching mechanism T shown in FIG. 10 is configured using movable members 31 and 32. In the example shown in FIG. 10, unlike the case illustrated in FIG. 2, FIG. 7 to FIG. 9, etc., the heat exchanger 5 has a fixed partition wall 9 that is flush with the second air inflow surface 5c, and The fixed partition wall 9 that is flush with the second air outflow surface 5d is not provided. Instead, the heat exchanger 5 itself is formed longer in the height direction than in the case illustrated in FIGS. 2, 7 to 9, etc., so that the upper surface of the heat exchanger 5 is inside the housing 2. It touches the ceiling. As a result, even if the fixed partition wall 9 that is flush with the second air inflow surface 5c of the heat exchanger 5 and the fixed partition wall 9 that is flush with the second air outflow surface 5d are not provided. Air can be prevented from flowing between the space A and the space B constituting the first ventilation air passage 12 and the space C and the space D constituting the second ventilation air passage 13 inside the body 2. Furthermore, since the heat exchanger 5 can be elongated in the height direction as compared with the examples shown in FIGS. 2 and 7 to 9, the air flowing through the first passage 5 e and the air flowing through the second passage 5 f. Heat exchange efficiency with can be increased.

  In the example shown in FIG. 10, the movable member 31 is mounted in the vicinity of the lower end side of the first air inflow surface 5a of the heat exchanger 5 and can swing about the swing axis. The movable member 32 is mounted in the vicinity of the upper end side of the second air inflow surface 5c of the heat exchanger 5, and can swing around the swing axis. Although not shown, an electric motor for swinging the movable member 31 and an electric motor for swinging the movable member 32 are also provided. In addition, when the movable member 31 and the movable member 32 are swung, it is necessary to design the position and size of each member including the movable members 31 and 32 so as not to interfere with other members inside the housing 2. There is.

  In the example shown in FIG. 10, the size of the movable member 31 is a size that can cover the lower part along the height direction of the first air inflow surface 5 a of the heat exchanger 5, and the movable member 32. The size of is such that the upper part along the height direction of the second air inflow surface 5c of the heat exchanger 5 can be covered. Specifically, when the movable member 31 covers and hides a lower portion along the height direction of the first air inflow surface 5a of the heat exchanger 5, the height of the first air inflow surface 5a of the heat exchanger 5 is covered. Only the first passage 5e in the upper portion along the direction serves as an air flow portion, and the first passage 5e in the remaining lower portion serves as an air non-flow portion. Similarly, when the movable member 32 covers and conceals the upper part of the heat exchanger 5 along the height direction of the second air inflow surface 5c, the height of the second air inflow surface 5c of the heat exchanger 5 increases. Only the second passage 5f in the lower portion along the airflow portion is an air flow portion, and the second passage 5f in the remaining upper portion is an air non-flow portion. Then, the sizes of the movable member 31 and the movable member 32 are set so that the second passage 5f that is a heat exchange target for the first passage 5e that is an air flow portion is at least an air non-flow portion. ing. In other words, the size of the movable member 31 and the movable member 32 is such that at least the first passage 5e that is a heat exchange target for the second passage 5f that is an air flow portion is an air non-flow portion. Is set.

  In FIG. 10A, the first air inflow surface 5 a of the heat exchanger 5 is not covered with the movable member 31, and the second air inflow surface 5 c of the heat exchanger 5 is covered with the movable member 32. Therefore, the state (heat exchange implementation state) in which heat exchange is performed between the air sucked into the housing 2 from the outside and the air sucked into the housing 2 from the room over the entire heat exchanger 5 is shown. Specifically, since the first air inflow surface 5a of the heat exchanger 5 is not covered at all by the movable member 31, air flows through the first passage 5e over the entire first air inflow surface 5a. Similarly, since the second air inflow surface 5c of the heat exchanger 5 is not covered at all by the movable member 32, air flows through the second passage 5f over the entire second air inflow surface 5c. As a result, heat exchange is performed between all the first passages 5e and the second passages 5f between the air sucked into the housing 2 from the outside and the air sucked into the housing 2 from the inside.

  FIG. 10B shows that a part of the lower side of the first air inflow surface 5a of the heat exchanger 5 is covered by the movable member 31, and the upper side of the second air inflow surface 5c of the heat exchanger 5 is one. Since the part is covered with the movable member 32, the heat exchange between the air sucked into the housing 2 from the outside of the heat exchanger 5 and the air sucked into the housing 2 from the inside of the heat exchanger 5 is stopped ( Heat exchange stop state). Specifically, since the second passage 5f, which is the target of heat exchange for the first passage 5e, which is an air flow portion, is at least an air non-flow portion, almost no heat exchange is performed between the two. Absent. Further, since the first passage 5e, which is the target of heat exchange for the second passage 5f, which is an air flow portion, is at least an air non-flow portion, heat exchange is hardly performed between the two. Accordingly, a part of the lower side of the first air inflow surface 5a of the heat exchanger 5 is covered with the movable member 31, and a part of the upper side of the second air inflow surface 5c of the heat exchanger 5 is movable member 32. In the state covered by the heat exchanger 5, almost no heat exchange is performed between the air flowing through the first passage 5 e and the air flowing through the second passage 5 f in the entire heat exchanger 5.

<2>
In the above-described embodiment, the case where the bypass switching mechanism M as the heat exchange state switching mechanism T is a mechanism capable of blocking the air flow in the first passage 5e of the heat exchanger 5 is described. Any mechanism that can block the flow of air in at least one of the first passage 5e and the second passage 5f of the heat exchanger 5 may be used. If the bypass switching mechanism M blocks the flow of air in at least one of the first passage 5e and the second passage 5f of the heat exchanger 5, the air that has been sucked into the two housings from the outside in the heat exchanger 5 This is because the function of the heat exchange state switching mechanism T for stopping the heat exchange with the air sucked into the housing 2 from the room can be achieved.

<3>
In the above embodiment, the structure of the heat exchanger 5, the humidity control rotor 6, the first heating unit 7, the second heating unit 8, and the like housed in the housing 2 of the ventilation device 1 has been described as an example. You may change into the thing of the other structure different from what was illustrated. Moreover, you may change the shape of the housing | casing 2 to another shape.

  INDUSTRIAL APPLICABILITY The present invention can be used for a ventilator that can be operated while switching a plurality of operation modes.

DESCRIPTION OF SYMBOLS 1 Ventilator 2 Case 5 Heat exchanger 5e 1st channel | path 5f 2nd channel | path 6 Humidity control rotor 6a Humidity control body 6b Rotation drive means 7 1st heating means 8 2nd heating means 10 Movable member (bypass switching mechanism M)
11 Bypass air passage 12 First ventilation air passage 13 Second ventilation air passage 20 Rail (Bypass switching mechanism M (Heat exchange state switching mechanism T))
21 Electric motor (Bypass switching mechanism M (Heat exchange state switching mechanism T))
22 Electric motor (Bypass switching mechanism M (Heat exchange state switching mechanism T))
23 Shaft (Bypass switching mechanism M (Heat exchange state switching mechanism T))
24 screen (bypass switching mechanism M (heat exchange state switching mechanism T))
25 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
26 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
27 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
28 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
29 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
30 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
31 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
32 Movable member (Bypass switching mechanism M (Heat exchange state switching mechanism T))
R Roll screen unit (Bypass switching mechanism M (Heat exchange state switching mechanism T))

Claims (8)

A first ventilation air passage through which air to be supplied to the room flows and a second ventilation air passage through which the air discharged from the room flows are formed inside the housing, and the interior of the housing is formed from the outside. Ventilation for performing a ventilation operation of supplying the sucked air into the room through the first ventilation air passage and discharging the air sucked from the room to the inside of the casing through the second ventilation air passage. A device,
Inside the housing,
A first passage that constitutes a part of the first ventilation air passage and a second passage that constitutes a part of the second ventilation air passage are separately provided therein, and the first passage and the second passage A heat exchanger that allows heat exchange between the air sucked into the housing from the outside and the air sucked into the housing from the room,
A humidity control rotor for adjusting the humidity of the air passing therethrough, and a humidity control rotor having a rotation drive means for rotating the humidity control body;
First heating means capable of heating air flowing through the first ventilation air passage by heating operation;
A second heating means capable of heating the air flowing through the second ventilation air passage by heating operation;
A heat exchanging state in which heat exchange is performed between the air sucked into the housing from the outside of the heat exchanger and the air sucked into the housing from the room, and the outdoor of the heat exchanger. A ventilation device comprising: a heat exchange state switching mechanism that switches between air sucked into the housing from the inside and a heat exchange stopped state that stops heat exchange between the air sucked into the housing from the room. In the first ventilation air passage, the air sucked into the housing from the outside passes through the first heating means, a partial region of the humidity control body, and the first passage of the heat exchanger. A compartment is formed inside the housing so as to be sequentially supplied and supplied to the room,
In the second ventilation air passage, the air sucked into the housing from the room is the second passage of the heat exchanger, the second heating means, and the partial region of the humidity control body. Is formed in the inside of the housing so as to flow through other areas in order and to be discharged outside the room,
The humidity control rotor is disposed so that the partial area of the humidity control body is located in the first ventilation air passage and the other area is located in the second ventilation air passage. 2. The operation according to claim 1, wherein the rotary driving unit is operated so that a portion located in the first ventilation air passage and a portion located in the second ventilation air passage in the wet body are changed as the humidity control body rotates. The ventilation device described. The heat exchange state switching mechanism includes a bypass air passage that bypasses the heat exchanger and air that flows in the middle of at least one of the first ventilation air passage and the second ventilation air passage. A bypass switching mechanism for switching whether to bypass the heat exchanger,
The heat exchange state is implemented by switching the bypass switching mechanism so that the flowing air does not bypass the heat exchanger, and the flowing air bypasses the heat exchanger through the bypass switching mechanism. The ventilation apparatus according to claim 2, wherein the heat exchange stop state is implemented by switching in such a manner.   The first heating means is not heated, the second heating means is heated, and the bypass switching mechanism is switched to a state where the flowing air does not bypass the heat exchanger. The ventilating apparatus according to claim 3, wherein the dehumidifying ventilation operation is performed in a state where heat is exchanged between air flowing through the first passage and air flowing through the second passage.   The first heating means is heated, the second heating means is not heated, and the bypass switching mechanism is switched to a state where the flowing air bypasses the heat exchanger. The ventilator according to claim 3 or 4, wherein the humidification ventilation operation is performed in a state where heat exchange between the air flowing through the first passage and the air flowing through the second passage is not performed.   The first heating means is not heated, the second heating means is not heated, and the bypass switching mechanism is switched to a state where the flowing air bypasses the heat exchanger, The ventilator according to any one of claims 3 to 5, wherein the non-heat exchange ventilation operation is performed in a state in which heat exchange between the air flowing through the first passage and the air flowing through the second passage is not performed.   The first heating means is not heated, the second heating means is not heated, and the bypass switching mechanism is switched to a state where the flowing air does not bypass the heat exchanger, When heat exchange ventilation operation is performed in a state in which heat flowing between the air flowing through the first passage and the air flowing through the second passage is exchanged, the state of the air sucked into the casing from the room The state of the air sucked into the inside of the housing from the outside satisfies a dew generation condition that can cause dew condensation by heat exchange in the heat exchanger, and switches to the non-heat exchange ventilation operation. The ventilation device described.   The ventilation device according to any one of claims 3 to 7, wherein the bypass switching mechanism is a mechanism capable of blocking air flow in at least one of the first passage and the second passage of the heat exchanger. .

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