JP2012189265A - Heat exchange ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat exchange ventilation device that can simultaneously supply or exhaust air with a ventilation volume larger than that of heat exchange ventilation or normal ventilation.SOLUTION: A heat exchange ventilation device 100 includes: a casing 2 for internally receiving a heat exchanger 1; an air supply passage 5 and exhaust passage 6 formed in the casing; bypass passages 15, 17 branched from the air supply passage or exhaust passage and causing an air supply flow passing the air supply passage or an exhaust air flow passing the exhaust passage to pass by detouring around the heat exchanger; dampers 9, 10, which are arranged in a branch unit with a branched bypass passage, and which adjust an opening of the air supply passage and the bypass passage or an opening of the exhaust passage and the bypass passage; state detection units 19, 20, 21 for detecting at least one state of the air supply flow and the exhaust flow; and a control unit 50 for adjusting the opening of the damper based on the detection results in the state detection unit, and for bringing both of the air supply passage and the bypass passage or both of the exhaust passage and the bypass passage into an open state.

Description

  The present invention relates to a heat exchange ventilator that performs heat exchange through a heat exchanger while performing simultaneous supply and exhaust.

  Some conventional heat exchange ventilators are equipped with dampers that can switch the air path through the heat exchanger and the bypass air path. By switching the air path to either the heat exchanger side or the bypass side according to the outdoor and indoor air conditions, heat exchange ventilation that exchanges heat between the air supply flow and the exhaust flow, and no heat exchange It can be switched to normal ventilation.

  As such a heat exchange ventilator, for example, a box body provided with a pair of an inlet and an outlet on each of the indoor side and the outdoor side, and an air supply fan built in the box body from the outdoor inlet port Intake outdoor air, supply air into the room from the indoor outlet through the air supply passage of the heat exchanger, and intake air from the indoor intake port by the exhaust blower, and pass through the exhaust passage of the heat exchanger. An exhaust passage that exhausts air from the air outlet to the outside, a heat exchanger that is provided at the intersection of the supply passage and the exhaust passage, and exchanges heat between the supply air flow and the exhaust flow, and an exhaust passage or a supply passage For example, Patent Document 1 discloses a heat exchange ventilator including a bypass air passage that bypasses the heat exchanger.

JP 2000-74445 A

  Heat exchange ventilation that exchanges heat between the supply air flow and exhaust flow and normal ventilation that uses outside air without heat exchange are effective from the viewpoint of energy saving, but depending on the conditions in the room, it is more rapid. There are scenes that require ventilation.

  However, in the conventional technology, in the normal ventilation using the bypass air passage, the ventilation volume can be increased by using the bypass air passage with less wind resistance than the heat exchange passage. There was a problem that it was difficult to respond sufficiently when it was desired to increase the ventilation volume more than ventilation.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a heat exchange ventilator that can perform simultaneous supply and exhaust with a larger ventilation volume than heat exchange ventilation and normal ventilation. .

  In order to solve the above-described problems and achieve the object, the present invention includes a casing that houses a heat exchanger, and an air blower that sucks outdoor air from an outdoor suction port formed inside the casing. An air supply passage for supplying air into the room from the indoor outlet through the air supply passage of the heat exchanger, and the inside of the casing. An exhaust path that exhausts air from the outdoor outlet through the passage and an air supply path or an exhaust path that diverts the heat exchanger to a supply airflow that passes through the supply path or an exhaust stream that passes through the exhaust path. A bypass passage that is allowed to pass through, a damper that is provided at a branch portion where the bypass passage is branched, and that adjusts the opening of the air supply passage and the bypass passage or the opening of the exhaust passage and the bypass passage, and less air supply and exhaust flow The state detection unit for detecting one of the states and the opening degree of the damper are adjusted based on the detection result of the state detection unit, and both the supply passage and the bypass passage or both the exhaust passage and the bypass passage are opened. And a control unit.

  According to the present invention, by adjusting the opening of the damper and opening both the air supply passage and the bypass passage or both the exhaust passage and the bypass passage, the ventilation volume is larger than that of heat exchange ventilation and normal ventilation. There exists an effect that the heat exchange ventilator which can perform simultaneous supply and exhaust can be obtained.

FIG. 1 is a perspective view showing a heat exchange ventilator according to a first embodiment of the present invention. FIG. 2 is a perspective plan view of the heat exchange ventilator shown in FIG. 1 and shows a state during heat exchange ventilation. FIG. 3 is a see-through side view of the heat exchange ventilator shown in FIG. 1 and is a diagram showing a state during heat exchange ventilation. FIG. 4 is a perspective plan view of the heat exchange ventilator shown in FIG. 1 and shows a state during normal ventilation. FIG. 5 is a perspective plan view of the heat exchange ventilator shown in FIG. 1 and shows a state during rapid ventilation with a large air volume. FIG. 6 is a flowchart showing control during operation of the heat exchange ventilator. FIG. 7 is a perspective plan view showing the heat exchange ventilator according to the second embodiment of the present invention. FIG. 8 is a perspective plan view showing the heat exchange ventilator according to the third embodiment of the present invention, and shows a state during normal ventilation. 9 is a perspective side view of the heat exchange ventilator shown in FIG. FIG. 10 is a perspective plan view showing a heat exchange ventilator according to a fourth embodiment of the present invention, and shows a state during normal ventilation. FIG. 11 is a transparent side view of the heat exchange ventilator shown in FIG. 10. FIG. 12 is a perspective view for explaining the relationship between the supply side damper and the exhaust side damper position detection sensor, or the relationship between the exhaust side damper and the supply side damper position detection sensor. FIG. 13 is a diagram for explaining a schematic configuration of an air supply side damper position detection sensor or an exhaust side damper position detection sensor.

  Below, the heat exchange ventilation apparatus concerning embodiment of this invention is demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a heat exchange ventilator according to a first embodiment of the present invention. FIG. 2 is a perspective plan view of the heat exchange ventilator shown in FIG. 1 and shows a state during heat exchange ventilation. FIG. 3 is a see-through side view of the heat exchange ventilator shown in FIG. 1 and is a diagram showing a state during heat exchange ventilation. FIG. 4 is a perspective plan view of the heat exchange ventilator shown in FIG. 1 and shows a state during normal ventilation. FIG. 5 is a perspective plan view of the heat exchange ventilator shown in FIG. 1 and shows a state during rapid ventilation with a large air volume.

  As shown in FIGS. 1 to 3, in the heat exchange ventilator 100, a heat exchanger 1 for exchanging heat between outdoor air and room air is installed in a main body casing 2 formed in a rectangular parallelepiped box shape. Ventilate the room while exchanging heat by supplying and exhausting air.

  In the main casing 2, an air supply passage 5 that sucks outdoor air from the outdoor air inlet 11 by the air supply blower 3 and supplies the air from the indoor side outlet 12 to the room through the air supply passage 1 a of the heat exchanger 1, An exhaust passage 6 is formed in which indoor air is sucked from the indoor air inlet 13 by the exhaust air blower 4 and exhausted from the outdoor air outlet 14 to the outside through the exhaust passage 1 b of the heat exchanger 1.

  Further, the heat exchanger 1, the air supply blower 3 and the exhaust air blower 4 are assembled in the main body casing 2, and the air supply path component 7 that guides the air sent from the air supply blower 3 and the exhaust that leads the air sent from the exhaust blower 4. By attaching the road component 8, the air supply path 5 and the exhaust path 6 are formed. In the following description, the air passing through the air supply path 5 is also referred to as a supply air flow, and the air passing through the exhaust path 6 is also referred to as an exhaust flow.

  The air supply path 5 includes an air supply heat exchange path 16, an air supply path 1 a formed from the upper surface of the heat exchanger 1, an air supply blower 3, and an air supply path from the outdoor inlet 11 of the main body casing 2. The air passage is formed through the component 7 and reaches the indoor outlet 12 of the main casing 2.

  On the other hand, the exhaust passage 6 connects the exhaust heat exchange passage 18, the exhaust passage 1 b formed from the upper surface of the heat exchanger 1, the exhaust blower 4, and the exhaust passage component 8 from the indoor side inlet 13 of the main casing 2. Then, it forms as a ventilation path which reaches the outdoor air outlet 14 of the main body casing 2.

  The air supply bypass passage 15 is a passage branched from the air supply passage 5. The air supply bypass passage 15 is branched from the air supply passage 5 before the heat exchanger 1 upstream of the air supply passage 5, and is supplied by bypassing the heat exchanger 1 from the outdoor inlet 11 of the air supply passage 5. An air passage is formed through the air bypass passage 15 to supply outdoor air to the indoor outlet 12.

  On the other hand, the exhaust bypass passage 17 is a passage branched from the exhaust passage 6. The exhaust bypass passage 17 is branched from the exhaust passage 6 on the upstream side of the heat exchanger 1 in the exhaust passage 6, and bypasses the heat exchanger 1 from the indoor suction port 13 of the exhaust passage 6 to bypass the exhaust bypass passage 17. A ventilating passage for exhausting the room air is formed at the street outside air outlet 14.

  On the outer side surface of the main casing 2, a duct connection cylinder 26 is attached to the outdoor inlet 11 and the indoor outlet 12 of the air supply passage 5 and the indoor inlet 13 and the outdoor outlet 14 of the exhaust passage 6. ing.

  As shown in FIG. 2, in the heat exchange ventilator 100 configured in this way, the supply side damper 9 provided at the branch between the supply passage 5 and the supply bypass passage 15 includes the supply air bypass passage sealing plate 22. The exhaust side damper 10 provided at the branch between the exhaust passage 6 and the exhaust bypass passage 17 is in contact with the exhaust bypass passage sealing plate 23, so that both the supply airflow and the exhaust flow are heat exchangers. The heat exchange ventilation operation by simultaneous supply / exhaust can be performed while exchanging heat between the supply airflow and the exhaust stream.

  In the heat exchange ventilation, the air supply side damper 9 is in contact with the air supply bypass passage sealing plate 22, whereby the ventilation to the air supply bypass passage 15 is blocked. Further, when the exhaust side damper 10 is in contact with the exhaust bypass passage sealing plate 23, ventilation to the exhaust bypass passage 17 is blocked.

  Further, as shown in FIG. 4, the supply air damper 9 is in contact with the supply air heat exchange passage sealing plate 24, and the exhaust side damper 10 is in contact with the exhaust heat exchange passage sealing plate 25. In addition, the heat exchanger 1 can be bypassed to the exhaust flow, and the normal ventilation operation by simultaneous supply and exhaust can be performed without performing heat exchange between the supply air flow and the exhaust flow.

  In the normal ventilation operation, the air supply side damper 9 is in contact with the supply air heat exchange passage sealing plate 24, whereby the ventilation to the supply air heat exchange passage 16 is blocked. Further, the exhaust side damper 10 is in contact with the exhaust heat exchange passage sealing plate 25, so that ventilation to the exhaust heat exchange passage 18 is blocked.

  In the heat exchange ventilator 100, an air supply side damper position detection sensor 27 that detects the position of the air supply side damper 9 is installed at an appropriate position within the movable range of the air supply side damper 9.

  By detecting the position of the air supply side damper 9 with the air supply side damper position detection sensor 27 and stopping the air supply side damper 9 in the middle of switching between the air supply heat exchange passage 16 and the air supply bypass passage 15, The supply airflow passes through the air passages of both the supply air heat exchange passage 16 and the supply air bypass passage 15. In this way, it is possible to reduce the pressure loss due to the air passage by increasing the air passage area on the air supply side, and to increase the air supply air volume without changing the output of the air supply blower 3. Details are described below.

  FIG. 12 is a perspective view for explaining the relationship between the supply side damper 9 and the supply side damper position detection sensor 27 or the relationship between the exhaust side damper 10 and the exhaust side damper position detection sensor 28. FIG. 13 is a diagram for explaining a schematic configuration of the supply side damper position detection sensor 27 or the exhaust side damper position detection sensor 28.

  The supply side damper 9 is stopped in the middle of switching between the supply air heat exchange passage 16 and the supply air bypass passage 15 to create a state in which the inlets of both the supply air heat exchange passage 16 and the supply air bypass passage 15 are opened. Therefore, the supply side damper position detection sensor 27 detects that the supply side damper 9 has reached a position in the middle of switching between the supply air heat exchange passage 16 and the supply air bypass passage 15.

  The air supply side damper position detection sensor 27 includes a plate-like actuator 29 and is installed within the movable range of the air supply side damper 9. The air supply side damper position detection sensor 27 is installed at a position where the plate-like actuator 29 is pushed in while the air supply side damper 9 is in the air path switching operation.

  When the rapid air supply mode is set, the air supply side damper 9 starts to move according to a command from the control device 50 and starts to push the plate-like actuator 29 at the portion where the air supply side damper position detection sensor 27 is installed.

  When the plate-like actuator 29 is pushed in the surface direction by the air supply side damper 9, the plate-like actuator 29 starts rotating in the direction pushed around the rotation shaft 30, and is an actuator housed in the case of the air supply side damper position detection sensor 27. The tip 31 touches a contact 32 that is also housed in the case of the supply side damper position detection sensor 27, and a signal from the contact 32 is transmitted to the control device 50. The control device 50 recognizes that the actuator 29 has been pressed.

  The plate-like actuator 29 has flexibility, the plate-like actuator 29 is pushed by the air supply side damper 9, and the actuator tip 31 housed in the case of the air supply side damper position detection sensor 27 becomes the contact 32. touch.

  When the movable range limit of the plate-like actuator 29 is reached, the plate-like actuator 29 starts to bend by being pressed by the supply side damper 9, and the supply-side damper 9 passes through while pressing the plate-like actuator 29. When the air supply side damper 9 passes through the plate actuator 29, the plate actuator 29 is released from the force pushed by the air supply side damper 9, the plate actuator 29 is restored to the original position, and the actuator tip 31 is also contacted. Go away from 32.

  When the actuator tip 31 moves away from the contact 32, a signal notifying that the air supply side damper 9 has passed the air supply side damper position detection sensor 27 is sent from the position detection sensor to the control device 50, and the air supply side damper 9 is The control device 50 recognizes that the air supply side damper position detection sensor 27 has passed.

  The control device 50 recognizes that the plate actuator 29 has been pushed by the air supply side damper 9, and then the control device 50 recognizes that the air supply side damper 9 has passed through the air supply side damper position detection sensor 27. Then, the control device 50 transmits a signal for stopping the air supply side damper 9 and opens the air supply side damper 9 in a state where the inlets of both the air supply heat exchange passage 16 and the air supply bypass passage 15 are opened. The operation is stopped and the operation in the rapid air supply mode using both the air supply heat exchange passage 16 and the air supply bypass passage 15 is started. As a result, the air passage area on the air supply side can be increased, and a rapid air supply operation with a larger air supply air volume than usual can be performed without increasing power consumption.

  Further, in the heat exchange ventilator 100, an exhaust side damper position detection sensor 28 that detects the position of the exhaust side damper 10 is installed at an appropriate position within the movable range of the exhaust side damper 10.

  The exhaust side damper position detection sensor 28 detects the position of the exhaust side damper 10 and stops the exhaust side damper 10 in the middle of switching between the exhaust heat exchange passage 18 and the exhaust bypass passage 17. The exhaust flow passes through both the air passages in the exhaust bypass passage 17. In this way, it is possible to increase the amount of exhaust air without increasing the pressure loss due to the air passage by increasing the air passage area on the exhaust side and without changing the output of the exhaust blower 4. Details are described below.

  In order to stop the exhaust side damper 10 in the middle of switching between the exhaust heat exchange passage 18 and the exhaust bypass passage 17 and to open the entrances of both the exhaust heat exchange passage 18 and the exhaust bypass passage 17, The exhaust side damper position detection sensor 28 detects that 10 has reached a position in the middle of switching between the exhaust heat exchange passage 18 and the exhaust bypass passage 17.

  The exhaust side damper position detection sensor 28 includes a plate-like actuator 29 and is installed within the movable range of the exhaust side damper 10. The exhaust side damper position detection sensor 28 is installed at a position where the plate-like actuator 29 is pushed in during the air path switching operation of the exhaust side damper 10.

  When the rapid exhaust mode is set, the exhaust side damper 10 starts to move according to a command from the control device 50 and starts to push the plate-like actuator 29 at a portion where the exhaust side damper position detection sensor 28 is installed.

  When the plate-like actuator 29 is pushed in the surface direction by the exhaust-side damper 10, the plate-like actuator 29 starts rotating in the direction pushed around the rotation shaft 30, and the actuator tip 31 housed in the case of the exhaust-side damper position detection sensor 28. However, the plate-shaped actuator 29 is pushed by the exhaust-side damper 10 by touching the contact 32 housed in the case of the exhaust-side damper position detection sensor 28 and transmitting the signal from the contact 32 to the control device 50. The control device 50 recognizes that this has been done.

  The plate-like actuator 29 has flexibility. The plate-like actuator 29 is pushed by the exhaust-side damper 10, and the actuator tip 31 housed in the case of the exhaust-side damper position detection sensor 28 touches the contact 32.

  When the movable range limit of the plate actuator 29 is reached, the plate actuator 29 is pushed by the exhaust side damper 10 and begins to bend, and the exhaust side damper 10 passes through while pressing the plate actuator 29. When the exhaust-side damper 10 passes through the plate-like actuator 29, the plate-like actuator 29 is released from the force pushed by the exhaust-side damper 10, the plate-like actuator 29 is restored to its original position, and the actuator tip 31 is also moved from the contact 32. Go away.

  When the actuator tip 31 moves away from the contact point 32, a signal notifying that the exhaust side damper 10 has passed through the exhaust side damper position detection sensor 28 is sent from the position detection sensor to the control device 50, and the exhaust side damper 10 is sent to the exhaust side damper. The control device 50 recognizes that it has passed the position detection sensor 28.

  When the control device 50 recognizes that the plate-like actuator 29 has been pushed by the exhaust side damper 10, and then the control device 50 recognizes that the exhaust side damper 10 has passed through the exhaust side damper position detection sensor 28, The control device 50 transmits a signal for stopping the exhaust-side damper 10 to stop the exhaust-side damper 10 in a state where both the exhaust heat exchange passage 18 and the exhaust bypass passage 17 are open, and the exhaust heat exchange passage. The operation in the rapid exhaust mode using both the air passages 18 and the exhaust bypass passage 17 is started. As a result, the air passage area on the exhaust side can be increased, and the rapid exhaust operation with a larger exhaust air volume than usual can be performed without increasing the power consumption.

  As shown in Fig. 5, by increasing the air passage area on both the air supply side and the exhaust side, a large air volume rapid ventilation that increases the ventilation volume more than heat exchange ventilation and normal ventilation to ventilate the indoor air is realized. can do.

  1 to 5, the air supply bypass passage 15 and the exhaust bypass passage 17 are provided in the vicinity of the side surface of the main casing 2. However, the present invention is not limited to this position. May be.

  Further, an outdoor temperature / humidity sensor (state detection unit) 19 capable of detecting the temperature and humidity of outdoor air at the outdoor suction port 11 in the main body casing 2, and the temperature of the indoor air at the indoor suction port 13 An indoor temperature / humidity sensor (state detection unit) 20 capable of detecting humidity is provided. Furthermore, the indoor air inlet 13 is provided with an indoor air quality sensor (state detector) 21 that can detect the indoor air quality.

  The heat exchange ventilator 100 is connected to the outdoor temperature / humidity sensor 19, the indoor temperature / humidity sensor 20, and the indoor air quality sensor 21, and controls the operations of the blowers 3, 4, the air supply side damper 9, and the exhaust side damper 10. 50 and an external controller (not shown) such as a remote controller is connected. In the first embodiment, the configuration in which the control device 50 is provided in the main body casing 2 is shown. However, the present invention is not limited to this, and may be provided in, for example, an external controller.

  Next, the operation will be described. With the above external controller, the heat exchange ventilator 100 can be set to ON / OFF of operation, the magnitude of ventilation air flow, and the type of ventilation (heat exchange ventilation operation or normal ventilation operation bypassing the heat exchanger 1 or large air volume rapid ventilation). Can be selected. When the operation switch (not shown) of the external controller is turned ON, the respective blowers 3 and 4 operate simultaneously, and the indoor air is sucked from the indoor side suction port 13, passes through the exhaust path 6, and is exhausted by the exhaust blower 4. It blows out from the outdoor side blower outlet 14, and is exhausted outside the room.

  In addition, outdoor air is sucked in from the outdoor suction port 11, passes through the air supply path 5, and is blown out from the indoor side air outlet 12 by the air supply blower 3 to be supplied into the room. At this time, heat exchange is performed between the supply air passing through the supply passage 1a and the exhaust passage 1b of the heat exchanger 1 and the exhaust air, and the total heat of the exhaust air is recovered into the supply air. Thus, by bringing the supply air close to the temperature of the exhaust air, the change in the total heat of the indoor air due to ventilation can be reduced, and the heating and cooling load can be reduced.

  Next, an outline of the control will be described. Hereinafter, a case where the heat exchange ventilation operation is selected by the external controller will be described.

  FIG. 6 is a flowchart showing control during operation of the heat exchange ventilator. When the operation of the heat exchange ventilator 100 is started, the ventilation operation is performed with the air volume based on the ventilation type and the air volume signal selected by the external controller. Then, based on the output signal of the indoor air quality sensor 21, the presence or absence of indoor air contamination is determined by the control device 50, and when there is no air contamination, for example, the degree of contamination detected by the indoor air quality sensor 21. If the value is less than or equal to the predetermined value (step S1, Yes), the process proceeds to step S2.

  In step S2, the output signals of the outdoor temperature / humidity sensor 19 and the indoor temperature / humidity sensor 20 are compared, and when the control device 50 determines that the indoor air is more comfortable than the outdoor air (step S2, Yes), Proceed to step S3. After heat exchange ventilation is performed for a certain time in step S3, the flow returns to the ventilation operation with the air volume based on the ventilation type and the air volume signal selected by the external controller.

  If the outdoor air is more comfortable than the indoor air in step S2 (step S2, No), the process proceeds to step S4. In step S4, normal ventilation is performed for a certain period of time, and the ventilation operation is returned to the ventilation operation based on the ventilation type selected by the external controller and the air volume signal. In step S1, the presence or absence of indoor air contamination is determined from the output signal of the indoor air quality sensor 21, and if there is air contamination (No in step S1), for example, the contamination detected by the indoor air quality sensor 21 When the degree is larger than the predetermined value, the process proceeds to step S5, and the indoor air quality is improved by performing a large air volume rapid ventilation.

  After the large air volume rapid ventilation, the process returns in step S1 to determine the improvement in air quality (contamination level). If the air quality is not improved, the process returns to step S5 and the large air volume rapid ventilation continues. Is called. In addition to the above, the air volume may be automatically switched to a selectable air volume according to the output of each sensor, and the air volume notch is not limited to the number of stages as long as there are a plurality of air volume notches.

  By the above configuration and operation, the optimal ventilation type (normal ventilation operation bypassing the heat exchanger 1 or the heat exchanger 1) can be selected by comparing the indoor and outdoor temperature and humidity conditions when the heat exchange ventilator 100 is operated. Judgment can be made automatically, and the total heat change of the indoor air due to ventilation can be reduced to reduce the heating and cooling load. Moreover, when indoor air is contaminated, it can be switched to rapid ventilation with a large air volume in preference to energy-saving ventilation. This makes it possible to obtain an easy-to-use heat exchange ventilator that can realize energy saving and air quality improvement according to the situation.

Embodiment 2. FIG.
FIG. 7 is a perspective plan view showing the heat exchange ventilator according to the second embodiment of the present invention. About the structure similar to the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted. In the second embodiment, by switching the supply side damper 9 in the direction of the supply air heat exchange passage 16, outdoor air is passed through the supply air heat exchange passage 16 and the supply air bypass passage 15 by the supply air blower 3. Air can be supplied into the room, and large air volume rapid ventilation on the supply side can be performed. At this time, by adjusting the opening degree of the supply side damper 9 with a stepping motor or the like, an arbitrary supply air flow rate can be obtained.

  Further, by switching the exhaust side damper 10 in the direction of the exhaust heat exchange passage 18, the indoor air can be exhausted to the outside through both the exhaust heat exchange passage 18 and the exhaust bypass passage 17 by the exhaust blower 4. Large air volume rapid ventilation can be performed. At this time, an arbitrary amount of exhaust ventilation air flow can be obtained by adjusting the opening degree of the exhaust side damper 10 with a stepping motor or the like. As this effect, it is possible to obtain the minimum necessary ventilation air volume while obtaining the highest possible exchange efficiency.

Embodiment 3 FIG.
FIG. 8 is a perspective plan view showing the heat exchange ventilator according to the third embodiment of the present invention, and shows a state during normal ventilation. 9 is a perspective side view of the heat exchange ventilator shown in FIG. About the structure similar to the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted. In the heat exchanging ventilator 100, the heat exchanger 1 for exchanging heat between outdoor air and room air is installed in a main body casing 2 formed in a rectangular parallelepiped box shape, and is the same as in the first embodiment by simultaneous supply and exhaust. Ventilate the room while exchanging heat. In the third embodiment, the bypass passage that bypasses the heat exchanger 1 is not formed on the exhaust side, but is formed only on the supply side.

  The heat exchange ventilation is performed by exchanging heat between the supply side air and the exhaust side air by flowing the supply air and the exhaust air through the supply passage 1a and the exhaust passage 1b of the heat exchanger 1, respectively. Is called. Therefore, as shown in FIG. 8, if only the supply airflow is passed through the supply air bypass passage 15, heat exchange is not performed in the heat exchanger 1, so heat exchange is performed between the supply airflow and the exhaust flow. There can be no normal ventilation.

  Therefore, in the first embodiment, by providing the supply air bypass passage 15 on the supply air passage 5 side and providing the exhaust bypass passage 17 on the exhaust passage 6 side, an example in which air does not flow to the heat exchanger 1 reliably. Indicated. On the other hand, in the third embodiment, even when the supply air bypass passage 15 is provided only on the supply air passage 5 side without providing the exhaust bypass passage 17 on the exhaust passage 6 side, the outdoor side of the supply air passage 5 is provided. Normal ventilation is achieved by bypassing the heat exchanger 1 from the suction port 11, passing the air supply bypass passage 15, and supplying outdoor air to the indoor outlet 12.

  According to the above configuration and operation, the type of ventilation of the air supply path 5 (heat exchange ventilation operation or normal ventilation operation bypassing the heat exchanger 1, or rapid large air flow rate of the supply air by switching the supply side damper 9 (Ventilation) can be selected arbitrarily. Since there is no exhaust side air passage switching structure, normal ventilation operation can be realized while simplifying the product structure.

Embodiment 4 FIG.
FIG. 10 is a perspective plan view showing a heat exchange ventilator according to a fourth embodiment of the present invention, and shows a state during normal ventilation. FIG. 11 is a transparent side view of the heat exchange ventilator shown in FIG. 10. About the structure similar to the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted. In the heat exchanging ventilator 100, the heat exchanger 1 for exchanging heat between outdoor air and room air is installed in a main body casing 2 formed in a rectangular parallelepiped box shape, and is the same as in the first embodiment by simultaneous supply and exhaust. Ventilate the room while exchanging heat.

  In the fourth embodiment, contrary to the third embodiment, the exhaust gas bypass passage 17 is provided only on the exhaust passage 6 side without providing the supply air bypass passage on the air supply passage 5 side. At the time of normal ventilation, as shown in FIG. 10, the indoor air is exhausted from the indoor side suction port 13 of the exhaust passage 6 to the heat exchanger 1 through the exhaust bypass passage 17 and to the outdoor outlet 14. .

  According to the above configuration and operation, the type of ventilation of the exhaust passage 6 (heat exchange ventilation operation or normal ventilation operation bypassing the heat exchanger 1 or large exhaust air volume rapid ventilation) can be changed by switching the exhaust side damper 10. Can be arbitrarily selected. Since there is no air path switching structure on the air supply side, normal ventilation operation can be realized while simplifying the product structure.

  As described above, the heat exchange ventilator according to the present invention is useful for simultaneous supply / exhaust of indoor air, and in particular, performs ventilation for exchanging heat between indoor air and outdoor air. Is suitable.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 1a Air supply path 1b Exhaust path 2 Main body casing 3 Supply air blower 4 Exhaust air blower 5 Supply air path 6 Exhaust path 7 Supply air path part 8 Exhaust path part 9 Supply side damper 10 Exhaust side damper 11 Outdoor suction Port 12 Indoor air outlet 13 Indoor air inlet 14 Outdoor air outlet 15 Supply air bypass passage 16 Supply air heat exchange passage 17 Exhaust air bypass passage 18 Exhaust heat exchange passage 19 Outdoor temperature humidity sensor 20 Indoor temperature / humidity sensor 21 Indoor air quality Sensor 22 Supply air bypass passage sealing plate 23 Exhaust air bypass passage sealing plate 24 Supply air heat exchange passage sealing plate 25 Exhaust heat exchange passage sealing plate 26 Duct connection cylinder 27 Supply air damper position detection sensor 28 Exhaust air damper position detection sensor 29 Plate Actuator 30 Rotating shaft 31 Actuator tip 32 Contact 50 Control device 10 0 Heat exchange ventilator

Claims (6)

A casing that houses the heat exchanger therein;
An air supply passage formed inside the casing, for sucking outdoor air from an outdoor suction port by an air supply blower, and supplying air from an indoor outlet through the air supply passage of the heat exchanger;
An exhaust passage formed inside the casing, sucking room air from an indoor suction port by an exhaust blower, and exhausting it from the outdoor outlet through the exhaust passage of the heat exchanger;
A bypass passage branched from the air supply passage or the exhaust passage and bypassing and passing the heat exchanger to a supply airflow passing through the air supply passage or an exhaust flow passing through the exhaust passage;
A damper for adjusting the opening of the air supply passage and the bypass passage or the opening of the exhaust passage and the bypass passage;
A state detector that detects at least one of the state of the air supply flow and the exhaust flow;
A control unit that adjusts the opening of the damper based on the detection result of the state detection unit, and opens both the air supply passage and the bypass passage or both the exhaust passage and the bypass passage. A heat exchange ventilator characterized by that. The bypass passage includes an air supply side bypass passage that bypasses the supply airflow, and an exhaust side bypass passage that bypasses the exhaust flow,
The damper includes an air supply side damper that adjusts an opening degree of the air supply passage and the air supply side bypass passage, and an exhaust side damper that adjusts an opening degree of the exhaust passage and the exhaust side bypass passage. The heat exchange ventilator according to claim 1, wherein the heat exchange ventilator is provided. The state detection unit includes an outdoor temperature sensor provided upstream of the heat exchanger in the air supply path, and an indoor temperature sensor provided upstream of the heat exchanger in the exhaust path. Configured with
The control unit compares an outdoor temperature detected by the outdoor temperature sensor and an indoor temperature detected by the indoor temperature sensor, and adjusts the opening degree of the damper based on the comparison result. The heat exchange ventilator according to claim 1 or 2. The state detection unit includes an outdoor humidity sensor provided upstream of the heat exchanger in the air supply path, and an indoor humidity sensor provided upstream of the heat exchanger in the exhaust path. Configured with
The control unit compares the outdoor humidity detected by the outdoor humidity sensor with the indoor humidity detected by the indoor humidity sensor, and adjusts the opening degree of the damper based on the comparison result. The heat exchange ventilator according to any one of claims 1 to 3. The state detection unit includes an indoor air quality sensor that is provided upstream of the heat exchanger in the exhaust path and detects the cleanliness of indoor air.
The said control part adjusts the opening degree of the said damper based on the cleanliness detected by the said indoor air quality sensor, The heat exchange ventilation apparatus as described in any one of Claims 1-3 characterized by the above-mentioned.   The opening degree detection part which detects that the said damper has made both the said air supply path and the said bypass path or both the said exhaust path and the said bypass path into an open state is further provided. The heat exchange ventilator according to any one of the above.

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