JPH07324788A - Ventilating apparatus - Google Patents

Abstract

PURPOSE:To simply and compactly construct a structure for calibrating output variation of a gas sensor for operating a ventilating apparatus so that size increase is suppressed. CONSTITUTION:In a ventilating apparatus for performing ventilation by supplying and exhausting air, an air supply passage 3 and an air exhaust passage are disposed in partially adjoining relation with each other with a separating wall 10 being disposed therebetween. An opening 13 capable of being closed by a rotatably-mounted rotating plate 14 is provided in a part of the separating wall 10. A gas sensor 15 for detecting a gas content in air and delivering an output according to detection is provided in a face of the rotating plate 14 facing an exhaust air passage 4. Operation of an air supply blower 11 and an air exhaust blower 12 is controlled by a controller 16 according to the output of the gas sensor 15, When the gas sensor 15 is calibrated, the rotating plate 14 is temporarily turned over so that the gas sensor 15 is made to face the air supply passage 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator which is equipped with a gas sensor for detecting contamination of indoor air and which ventilates by supplying and exhausting air.

[0002]

2. Description of the Related Art A ventilation device of this type is constructed so that the contamination of indoor air is monitored by a gas sensor, and when the indoor air is contaminated, ventilation operation is performed to eliminate it. As the gas sensor, a miscellaneous gas sensor, a carbon dioxide gas sensor that detects the concentration of carbon dioxide, and the like are adopted. There are quite a lot of such gas sensors that monitor the pollution of the air in the room such that the output changes with time, that is, the output drifts, such as a solid electrolyte type carbon dioxide gas sensor. In a ventilator equipped with a gas sensor whose output drifts in this way, a means for correcting or calibrating the deviation of the output due to the drift of the gas sensor is required.

For example, Japanese Unexamined Patent Publication No. 4-155130 discloses a ventilating fan equipped with an electric circuit for calibrating the drift of a carbon dioxide sensor to ventilate by introducing outside air. In this ventilation fan, a carbon dioxide sensor is built into the air passage of the ventilation fan body that is usually placed in the atmosphere of the room, and when the carbon dioxide sensor detects a carbon dioxide concentration exceeding the set concentration, the ventilation fan operates and the inside of the room due to the introduction of outside air. Ventilation is done. The calibration of the output related to the drift of the carbon dioxide sensor is performed by activating the calibration means by the output of the means for detecting the introduction of the outside air due to the ventilation operation.

That is, when the ventilation operation is performed, the carbon dioxide sensor is exposed to the outside air flowing through the air passage and detects the concentration of carbon dioxide in the outside air. Carbon dioxide concentration of outside air (atmosphere) is 3
Since it is almost constant between 00 ppm and 400 ppm,
The output of the carbon dioxide sensor when exposed to the outside air is stored, compared with the output of the carbon dioxide sensor when exposed to the next air, and the operation of calibrating the change in the output is repeated repeatedly to make it appropriate. Ventilation operation will be implemented, and it is not necessary to calibrate the output of the carbon dioxide sensor using standard gas.

However, in the above-mentioned conventional ventilation fan, the type that introduces the outside air not only requires an opening / closing shutter having a relatively good airtightness on the outside of the air passage, but also the type that exhausts the air in the room. However, there is a problem that the method for calibrating the output of the carbon dioxide sensor cannot be applied as it is. A ventilation system that has two passages for ventilation by supply and exhaust, and an air-conditioning type ventilation system that incorporates a heat exchanger in the middle of the two passages are exposed to the outside air when calibrating the output, and are usually exposed. There is no convenient place for assembling the sensor to be exposed to the atmosphere in the room, and actually, for example, a complicated air passage structure is provided as shown in FIG. 10 to calibrate the output of the gas sensor.

That is, as shown in FIG. 10, an air supply duct 102 connected to an indoor open end of an air supply passage 101 for supplying outdoor air into the room, and an exhaust air for exhausting indoor air out of the room. The exhaust duct 104 connected to the indoor side open end of the passage 103 has a communication passage 105 on the base side thereof.
Is communicated by. An opening / closing damper 10 is provided in each of the air supply duct 102, the exhaust duct 104, and the communication passage 105.
6, 107 and 108 are provided, and are configured to be controlled to be opened and closed by the controller 109. A gas sensor 110 such as a carbon dioxide gas sensor is assembled in the exhaust passage 103 near the opening end on the indoor side formed in the main body. When calibrating the output of the gas sensor 110,
The opening / closing dampers 106, 107, 108 are controlled to open / close as shown by the chain line in FIG.
03 is communicated with the communication passage 105 to short-circuit the outside air. That is, during calibration, the gas sensor 110 is exposed to the outside air flowing from the air supply passage 101 to the exhaust passage 103 via the communication passage 105, and outputs the gas concentration of the outside air.
The output can be calibrated.

However, in such a ventilation system,
The configuration for calibrating the output of the gas sensor 110 is complicated and exaggerated, and since the main configuration is externally attached to the main body, the ventilation device becomes large in size, and a large installation space is required. .

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and its object is to provide a structure for calibrating the output fluctuation of a gas sensor for operating a ventilation system. Is to make it simple and compact, to suppress the increase in size of the whole, and to obtain a ventilation system by air supply and exhaust that does not increase the installation space.

[0009]

In order to achieve the above object, the present invention according to claim 1 adjoins an air supply passage and an exhaust passage in a ventilation device for performing ventilation by supply and exhaust with a partition wall between them. A gas sensor for detecting the gas concentration in the air on the surface of the partition plate facing the exhaust passage and outputting the corresponding gas is provided in a part of the partition wall that is closed by a rotatable plate. The controller controls the operation of the air supply blower and the exhaust air blower based on the output of this gas sensor.When calibrating the output fluctuation of the gas sensor, the rotary plate is temporarily inverted and the gas sensor is supplied. Adopt a means to face the passage.

In order to achieve the above-mentioned object, the invention of claim 2 is an exhaust blower for forming an exhaust flow in an exhaust passage of a ventilation device for ventilation by supply and exhaust, and a blower for forming an air flow in the opposite direction by reverse rotation. In addition to the configuration, a gas sensor that detects the gas concentration in the exhaust passage and outputs according to it is installed, and the controller controls the operation of the air supply blower and the exhaust blower based on the output of this gas sensor. When calibrating the output, a means for temporarily operating the exhaust blower in reverse rotation is adopted.

In order to achieve the above object, the invention of claim 3 is an exhaust blower for forming an exhaust flow in an exhaust passage in a ventilation device for ventilation by supply and exhaust, and a calibration for forming an air flow in the opposite direction. Along with each blower, a gas sensor that detects the gas concentration in the exhaust passage and outputs according to it is attached, and the controller controls the operation of the air supply blower and the exhaust blower based on the output of this gas sensor. When calibrating output fluctuations, a means to stop the exhaust blower and temporarily operate the calibration blower is adopted.

In order to achieve the above-mentioned object, the invention of claim 4 is to provide an exhaust blower for forming an exhaust flow to the outside in a ventilation device for ventilation by supply and exhaust, and to the inside of the supply passage. In addition to providing an air supply blower that forms the air supply flow of the, the gas sensor that detects the gas concentration of the atmosphere inside the air supply passage and outputs according to it is installed, and the air supply blower and the exhaust air blower are output by the output of this gas sensor. The controller is controlled to operate for a predetermined time, the gas concentration of the indoor air is temporarily stopped and detected, and the output fluctuation of the gas sensor is calibrated. The means for performing the operation based on the output of the gas sensor is adopted.

In order to achieve the above-mentioned object, the invention of claim 5 is provided with an air supply passage and an exhaust passage in a ventilation device for performing ventilation by supply and exhaust so that their indoor-side open ends are close to each other. A movable wind direction changing member that can change the blowing direction is provided at the indoor opening end of the passage, and the gas concentration of the atmosphere in the exhaust passage is detected near the indoor opening end of the exhaust passage, and the corresponding output is output. A gas sensor is installed to control the operation of the air supply blower and the exhaust air blower by the controller based on the output of this gas sensor, and when the output calibration to calibrate the output fluctuation of the gas sensor is performed, the air supply is temporarily supplied by the wind direction changing member. A means for blowing the air supply from the indoor opening end of the passage toward the indoor opening end of the exhaust passage is adopted.

In order to achieve the above object, the invention of claim 6 detects the gas concentration of the atmosphere in the exhaust passage in the vicinity of the outdoor-side open end of the exhaust passage in the ventilation device for performing ventilation by supply and exhaust, and responds accordingly. It is configured to control the operation of the air supply blower and the exhaust blower by the controller by the output of this gas sensor, and the gas concentration of the room air is temporarily detected by operating the exhaust blower, The output calibration for calibrating the output fluctuation of the gas sensor employs a means for performing the output calibration based on the output of the gas sensor while the exhaust blower is stopped.

In order to achieve the above object, the invention of claim 7 has a structure in which an air supply passage and an exhaust passage in a ventilation device for performing ventilation by supply and exhaust are partly separated by a partition and are adjacent to each other. The air supply passage and the exhaust passage are connected to each other by a bypass provided with a bypass blower that forms an air flow from the air supply passage side toward the exhaust passage, and the gas of the atmosphere in the exhaust passage is provided near the bypass of the exhaust passage. A gas sensor that detects the concentration and outputs according to the concentration is installed, and the output of this gas sensor is configured to control the operation of the air supply blower and the exhaust air blower by the controller. To detect,
When calibrating the output fluctuation of the gas sensor,
Use a means to temporarily operate the bypass blower.

[0016]

According to the first aspect of the present invention, the gas sensor normally faces the exhaust passage and is placed in an atmosphere of room air filling the exhaust passage to detect the gas concentration of the atmosphere and output the gas accordingly. This controls the operation of the supply air blower and the exhaust air blower. When calibrating the output fluctuation of the gas sensor, the gas sensor faces the air supply passage by temporarily reversing the rotating plate, and is placed in the atmosphere of the outside air filling the air supply passage. Therefore, from the gas sensor, an output corresponding to the gas concentration of the atmosphere, that is, an output corresponding to a substantially constant gas concentration in the atmosphere serving as a reference for output calibration is obtained.

According to the second aspect of the invention, the gas sensor normally faces the exhaust passage and is placed in an atmosphere of room air filling the exhaust passage, detects the gas concentration of the atmosphere, and outputs the gas accordingly. This controls the operation of the supply air blower and the exhaust air blower. When calibrating the output fluctuation of the gas sensor, the exhaust blower of the gas sensor is temporarily rotated in the reverse direction and the exhaust passage is filled with outside air.
It is exposed to the atmosphere of the outside air. Therefore, from the gas sensor, an output corresponding to the gas concentration of the atmosphere, that is, an output corresponding to a substantially constant gas concentration in the atmosphere serving as a reference for output calibration is obtained.

In the means according to claim 3, the gas sensor normally faces the exhaust passage and is placed in an atmosphere of the air in the room filling the exhaust passage to detect the gas concentration of the atmosphere and respond accordingly. The output controls the operation of the supply air blower and the exhaust air blower. When calibrating the output fluctuation of the gas sensor, the exhaust blower of the gas sensor is stopped and the calibration blower is temporarily operated.
The exhaust passage is filled with the outside air, and the atmosphere is filled with the outside air. Therefore, from the gas sensor, an output corresponding to the gas concentration of the atmosphere, that is, an output corresponding to a substantially constant gas concentration in the atmosphere serving as a reference for output calibration is obtained.

In the means according to claim 4, the gas sensor faces the indoor side of the air supply passage, is placed in the atmosphere of the relevant portion, detects the gas concentration of the atmosphere, and outputs the air in response to the gas supply blower. The exhaust blower is operated for a predetermined period of time in a timely manner. When the air supply blower is temporarily stopped, the gas sensor is placed in the atmosphere of the indoor air and detects the gas concentration of the indoor air.
During operation of the air supply blower, the gas sensor is exposed to the atmosphere of the outside air and detects the gas concentration of the outside air. Therefore, an output corresponding to a substantially constant gas concentration in the atmosphere, which serves as a reference for the output calibration of the gas sensor, can be obtained.

In the means according to claim 5, the gas sensor normally faces the exhaust passage and is placed in an atmosphere of room air filling the exhaust passage, detects the gas concentration of the atmosphere, and outputs the corresponding gas. This controls the operation of the supply air blower and the exhaust air blower. When calibrating the output fluctuation of the gas sensor, the gas sensor temporarily sucks the supply airflow from the indoor opening end of the air supply passage by the wind direction changing member, and the exhaust air passage is filled with outside air. And it is put in the atmosphere by the outside air. Therefore,
From the gas sensor, an output corresponding to the gas concentration of the atmosphere, that is, an output corresponding to a substantially constant gas concentration in the atmosphere serving as a reference for output calibration is obtained.

In the means according to claim 6, the gas sensor normally faces the exhaust passage and is placed in an atmosphere of room air filling the exhaust passage, detects the gas concentration of the atmosphere, and outputs according to the detected gas concentration. This controls the operation of the supply air blower and the exhaust air blower. When the exhaust blower is temporarily operated, the gas sensor is placed in the atmosphere of the indoor air and detects the gas concentration of the air in the room.When the exhaust blower is stopped, the gas sensor is placed in the atmosphere of the outside air, The gas concentration of the outside air will be detected. Therefore, an output corresponding to a substantially constant gas concentration in the atmosphere, which serves as a reference for the output calibration of the gas sensor, can be obtained.

In the means according to claim 7, the gas sensor normally faces the exhaust passage and is placed in an atmosphere of room air filling the exhaust passage, detects the gas concentration of the atmosphere, and outputs the gas according to the detected gas concentration. This controls the operation of the supply air blower and the exhaust air blower. When the exhaust blower is temporarily operated, the gas sensor is placed in the atmosphere of the indoor air and detects the gas concentration of the indoor air.When the bypass blower is operated, the outside air flowing through the bypass from the air supply passage is discharged. In the atmosphere, the gas concentration of the outside air is detected. Therefore, an output corresponding to a substantially constant gas concentration in the atmosphere, which serves as a reference for the output calibration of the gas sensor, can be obtained.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Example 1. 1 and 2 are cross-sectional views showing a ventilation device as an embodiment of the present invention. This ventilation device is attached to an opening formed in a wall body 1 such as an outer wall that separates indoors and outdoors, and an air supply passage 3 for supplying outdoor air into the room is provided in a box-shaped main body outer shell 2. An exhaust passage 4 for exhausting indoor air to the outside is formed. The air supply passage 3 has an inlet end 5 opening on one surface of the main body shell 2 that faces the outside of the body, and an outlet end 6
Is open on one surface of the body outer shell 2 facing the room. Also,
The exhaust passage 4 has an inlet end 7 opening on one surface of the main body shell 2 facing the room, and an outlet end 8 opening on one surface of the main body shell 2 facing the room. The air supply passage 3 and the exhaust passage 4 are formed by fluid passages of the heat exchanger 9 incorporated in the outer shell 2 of the body at their intermediate portions, and are separated by a partition wall 10 except the portion by the heat exchanger 9. It is adjacent.

An air supply blower 11 is installed on the outlet side of the air supply passage 3 with its outlet facing the outlet end 6. An exhaust blower 12 is installed on the outlet side of the exhaust passage 4 with its outlet facing the outlet end 8. The supply air blower 11 forms a supply air flow in the supply air passage 3 from the inlet end 5 through one fluid passage of the heat exchanger 9 toward the outlet end 6. Further, the exhaust blower 12 forms an exhaust flow in the exhaust passage 4 from the inlet end 7 through the other fluid passage of the heat exchanger 9 toward the outlet end 8.
Therefore, the exhaust flow and the supply air flow are heat-exchanged while passing through the heat exchanger 9.

An opening 13 is formed in a part of the partition wall 10 separating the air supply passage 3 and the exhaust passage 4. This opening 13 is normally closed by a rotating plate 14 which is rotatably pivotally mounted. . The opening 13 is formed in the partition wall 10 separating the inlet side of the exhaust passage 4 and the outlet side of the air supply passage 3 in the illustrated example, but the inlet side of the exhaust passage 4 and the inlet side of the air supply passage 3 are formed. You may form in the partition 10 which isolate | separates. The rotary plate 14 is rotatably supported by a central rotary shaft, and is rotated in the forward and reverse directions of 180 degrees by a driving device (not shown). A gas sensor 15 such as a solid electrolyte type carbon dioxide gas sensor is usually attached to the rotary plate 14 on the side facing the exhaust passage 4.

The gas sensor 15 detects the gas concentration of a specific gas in the placed atmosphere and outputs a voltage signal according to the gas concentration. However, since the output drifts, the output is sometimes calibrated. (Eg once a day). The output of the gas sensor 15 is input to a remote-controlled or built-in type controller 16. The controller 16 controls the operation of the supply air blower 11 and the exhaust air blower 12 according to the output of the gas sensor 15 to perform ventilation by supply and exhaust air. The controller 16 also calibrates the output of the gas sensor 15 in addition to controlling the operation of the blower.
That is, in the output calibration for calibrating the output fluctuation due to the drift of the gas sensor 15, the drive machine is operated by the signal from the controller 16 and the rotary plate 14 is temporarily inverted. The output of the gas sensor 15 at this time is stored in the controller 16 as a reference value for output calibration at each time, the determination level of the next ventilation operation is corrected, and the output of the gas sensor 15 is calibrated.

In the ventilator having the above structure, the controller 16 normally performs the ventilation operation according to the output of the gas sensor 15 facing the exhaust passage 4 on the inlet side of the exhaust passage 4. That is, when the output of the gas sensor 15 reaches a value corresponding to a gas concentration of, for example, 1000 ppm or more, the controller 16 operates the supply air blower 11 and the exhaust air blower 12 to perform ventilation operation by supply and exhaust. The output of the gas sensor 15 is, for example, 800 ppm.
When the value corresponding to the following gas concentration is reached, the controller 1
6 stops the air supply blower 11 and the exhaust blower 12, and stops the ventilation operation. Since the gas sensor 15 faces the inlet side of the exhaust passage 4 filled with the indoor air, the gas concentration of the indoor air can be accurately monitored by the gas sensor 15.

The output related to the drift of the gas sensor 15 is calibrated by rotating the rotary plate 14 by 180 degrees. When the rotary plate 14 rotates 180 degrees, the gas sensor 15 faces the air supply passage 3 filled with the outside air as shown in FIG. 2, and detects and outputs the gas concentration of the atmosphere due to the outside air.
For example, the carbon dioxide concentration of the outside air (atmosphere) is 300 ppm to 4
Since it is almost constant between 00 ppm, the output of the gas sensor 15 when exposed to the outside air is stored and compared with the output of the gas sensor 15 when exposed to the outside air at the next calibration,
By repeating the operation of calibrating the change in the output, proper ventilation operation by the gas sensor 15 is performed. Therefore, the troublesome gas sensor 1 using standard gas
It is not necessary to calibrate the output of 5.

After the calibration, the rotary plate 14 is rotated again by 180 degrees to return to the original state, and the normal ventilation operation is started. As described above, in this ventilator, not only is the structure for calibrating the output of the gas sensor 15 simple, but the main body outer shell 2 does not include any externally attached member, so that the main body does not increase in size and is installed. Space does not increase. The configuration related to the calibration of the output of the gas sensor 15 shown in this embodiment is
The same can be applied to a ventilation system for supplying / exhausting air without the heat exchanger 9.

Example 2. FIG. 3 is a sectional view showing the ventilation device of the second embodiment. As can be seen from this figure, the basic structure of the ventilation device itself is almost the same as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In this ventilation system, an exhaust blower 12 which forms an exhaust flow in the exhaust passage 4 is composed of a blower which forms an air flow in the exhaust passage 4 in the opposite direction to the exhaust flow by rotating in the reverse direction. The gas sensor 15 is connected to the exhaust passage 4
Is disposed on the inlet end 7 side of the. Gas sensor 15
The configuration related to the output calibration is the controller 16 and the exhaust blower 12, and the rotating plate 14 and the drive unit of the first embodiment are unnecessary.

Also in this ventilation device, the normal ventilation operation is the same as that of the first embodiment. Gas sensor 1
When the output of 5 is calibrated, the exhaust blower 12 is temporarily rotated in the reverse direction to form an air flow in the exhaust passage 4 from the outlet end 8 to the inlet end 7. This air flow is the same as the introduction of the outside air, whereby the atmosphere in which the gas sensor 15 is placed is replaced by the outside air, and the output of the gas sensor 15 can be calibrated in the same manner as the calibration of the output shown in the first embodiment. Done. Thus, in this ventilation device, the gas sensor 15
The configuration for calibrating the output is simple, and since the body outer shell 2 does not include an external member, the body does not increase in size and the installation space does not increase. The configuration related to the calibration of the output of the gas sensor 15 shown in this embodiment can be similarly applied to a ventilation system for supplying / exhausting air without the heat exchanger 9.

Example 3. FIG. 4 is a sectional view showing the ventilation device of the third embodiment. As can be seen from this figure, the basic structure of the ventilation device itself is almost the same as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In addition to the exhaust blower 12 forming an exhaust flow in the exhaust passage 4, a small calibration blower 17 forming an air flow in the exhaust passage 4 in the opposite direction to the exhaust flow is provided in the exhaust passage 4. It is incorporated on the inlet end 7 side. The gas sensor 15 is arranged so as to face the outlet of the calibration blower 17 in the exhaust passage 4. The configuration for calibrating the output of the gas sensor 15 is the controller 16 and the calibrating blower 17, and the rotating plate 14 and the driving machine of the first embodiment are not necessary.

Also in this ventilation device, the normal ventilation operation is the same as that of the first embodiment. Gas sensor 1
When the output of 5 is calibrated, the exhaust blower 12 is stopped and the calibration blower 17 that is normally stopped is
Is temporarily driven. As a result, an air flow is formed in the exhaust passage 4 from the outlet end 8 toward the inlet end 7. This air flow is the same as the introduction of the outside air, whereby the atmosphere in which the gas sensor 15 is placed is replaced by the outside air,
The output of the gas sensor 15 is calibrated in the same manner as the calibration of the output shown in the first embodiment. As described above, in this ventilator, the configuration for calibrating the output of the gas sensor 15 is simple, and since the main body outer shell 2 does not include any external member, the main body does not increase in size and the installation space is small. Do not increase. Gas sensor 15 shown in this embodiment
The configuration related to the output calibration can be similarly applied to a ventilation system for supplying / exhausting air without the heat exchanger 9.

Example 4. FIG. 5 is a sectional view showing the ventilation device of the fourth embodiment. As can be seen from this figure, the basic structure of the ventilation device itself is almost the same as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In this ventilation device, a gas sensor 15 is arranged on the outlet end 6 side of the air supply passage 3. Since the outlet end 6 side of the air supply passage 3 faces and communicates with the room, the atmosphere in which the gas sensor 15 is placed is the room air while the ventilation device is stopped. When the output of the gas sensor 15 exceeds the set value, the controller 16 starts the ventilation operation, but always causes the supply air blower 11 to operate with a slight delay from the exhaust air blower 12. This ventilation operation is performed for a fixed time, and when the fixed time has elapsed, the controller 16 stops the ventilation operation. At the time of this stop, both the supply air blower 11 and the exhaust air blower 12 are stopped at the same time.

In this ventilation system, the gas sensor 15
Detects the gas concentration of indoor air in the air supply passage 3. That is, while the ventilation operation is stopped, the atmosphere in which the gas sensor 15 is placed is the indoor air, and the gas concentration of the indoor air is detected. When the output of the gas sensor 15 becomes equal to or higher than the set value, the controller 16 operates the exhaust blower 12 and also operates the supply air blower 11 with a slight delay. As a result, the ventilation operation is stopped after a certain period of time has elapsed since the ventilation operation by the air supply and exhaust was started. While the air supply / exhaust ventilation operation is being performed, the air supply passage 3 is filled with the outside air, so the atmosphere in which the gas sensor 15 is placed is the outside air.
The calibration of the output of the gas sensor 15 in this ventilation device is performed at the timing when the air supply blower 11 is operating.
This is done by capturing the output of. After this, the gas sensor 15 is processed in the same manner as the calibration of the output shown in the first embodiment.
The output of is calibrated. As described above, in this ventilator, the configuration for calibrating the output of the gas sensor 15 is simple, and since the main body outer shell 2 does not include any external member, the main body does not increase in size and the installation space is small. Do not increase. The configuration related to the calibration of the output of the gas sensor 15 shown in this embodiment can be similarly applied to a ventilation system for supplying / exhausting air without the heat exchanger 9.

Example 5. 6 and 7 are sectional views showing the ventilation device of the fifth embodiment. As can be seen from these figures, the basic structure of the ventilation device itself is almost the same as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In this ventilation device, the gas sensor 15 is arranged near the inlet end 7 of the exhaust passage 4. The air supply passage 3 has an outlet end 6 which normally bounces up as shown in FIG. 6 and temporarily blows out the air supply flow from the outlet end 6 as shown in FIG. An airflow direction changing member 18 directed toward the inlet end 7 of the passage 4 is attached. The configuration related to the calibration of the output of the gas sensor 15 is the controller 16 and the wind direction changing member 18, and the rotating plate 14 and the driving machine of the first embodiment are unnecessary.

Also in this ventilation device, the normal ventilation operation is the same as that of the first embodiment. Gas sensor 1
When the output of 5 is calibrated, the wind direction changing member 18 that has jumped up by the controller 16 is temporarily rotated to the inlet end 7 side of the exhaust passage 4 as shown in FIG. 7. As a result, the supply airflow blown from the supply passage 3 is directed to the inlet end 7 of the exhaust passage 4, and is sucked into the exhaust passage 4. This air flow is the outside air, whereby the atmosphere in which the gas sensor 15 is placed is replaced with the outside air, and the output of the gas sensor 15 is calibrated in the same manner as the calibration of the output shown in the first embodiment.
As described above, in this ventilation device, the configuration for calibrating the output of the gas sensor 15 is simple, and since only the small wind direction changing member 18 is attached to the outer shell 2 of the main body, the main body is increased in size. And there is no need to increase the installation space. Gas sensor 15 shown in this embodiment
The configuration related to the output calibration can be similarly applied to a ventilation system for supplying / exhausting air without the heat exchanger 9.

Example 6. FIG. 8 is a sectional view showing the ventilation device of the sixth embodiment. As can be seen from this figure, the basic structure of the ventilation device itself is almost the same as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In this ventilation system, the gas sensor 15 is arranged near the outlet end 8 of the exhaust passage 4. The configuration related to the calibration of the output of the gas sensor 15 is the controller 1
6 and the exhaust blower 12, the rotary plate 1 of the first embodiment.
4 and the driving machine are unnecessary. Since the outlet end 8 side of the exhaust passage 4 is exposed and communicates with the outside of the room, the atmosphere in which the gas sensor 15 is placed is outside air while the ventilation device is stopped. The controller 16 compulsorily operates the exhaust blower 12 for a short period of time when the stop time of the exhaust blower 12 has passed a certain time. As a result, the atmosphere in which the gas sensor 15 is placed becomes the indoor air, and the gas sensor 15 detects the gas concentration of the indoor air. And if the output is above the set value,
The air supply / blower 11 is also operated and the ventilation operation by the air supply / exhaust is started. Gas sensor 15 when only the exhaust blower 12 is operating
Is less than the set value, the exhaust blower 12 is also stopped after a short time has passed. While the exhaust blower 12 is operating, the gas sensor 15 is in the atmosphere of the indoor air, so that the gas concentration of the indoor air can be detected. Therefore, if the output of the gas sensor 15 falls below the set value during the ventilation operation, the controller 16 stops the ventilation operation.

That is, in this ventilation device, the gas concentration of the outside air is detected when the exhaust blower 12 is stopped, and the exhaust blower 12 is temporarily operated to detect the gas concentration of the indoor air. Gas sensor 1 in this ventilation system
The output of 5 is calibrated by capturing the output of the gas sensor 15 at the timing when the exhaust blower 12 is stopped. After that, the output of the gas sensor 15 is calibrated in the same manner as the calibration of the output shown in the first embodiment. As described above, in this ventilator, the configuration for calibrating the output of the gas sensor 15 is simple, and since the main body outer shell 2 does not include any external member, the main body does not increase in size and the installation space is small. Do not increase. If the calibration operation is performed while the exhaust blower 12 is operating,
The exhaust blower 12 will be temporarily stopped.

Example 7. FIG. 9 is a sectional view showing the ventilation device of the seventh embodiment. As can be seen from this figure, the basic structure of the ventilation device itself is almost the same as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In this ventilation device, the gas sensor 15 is arranged on the outlet end 8 side of the exhaust passage 4. Air supply passage 3
A bypass 19 is provided and communicates with the partition wall 10 that separates the inlet end 5 side of the exhaust passage 4 from the outlet end 8 side of the exhaust passage 4.
A small bypass blower 20 that forms an air flow from the air supply passage 3 side to the exhaust passage 4 side is incorporated in the bypass 19. The main components of the configuration related to the calibration of the output of the gas sensor 15 are the controller 16, the bypass 19, and the bypass blower 20, and the rotary plate 14 and the drive unit of the first embodiment are not necessary.

Since the outlet end 8 side of the exhaust passage 4 faces the outside of the room, the gas sensor 15 cannot detect the gas concentration of the air in the room while the ventilation device is stopped. Therefore, the controller 16 forcibly operates the exhaust blower 12 for a short time when the stop time of the exhaust blower 12 has passed a certain time. As a result, the atmosphere in which the gas sensor 15 is placed becomes the indoor air, and the gas sensor 15 detects the gas concentration of the indoor air. And if the output is above the set value,
The air supply / blower 11 is also operated and the ventilation operation by the air supply / exhaust is started. Gas sensor 15 when only the exhaust blower 12 is operating
Is less than the set value, the exhaust blower 12 is also stopped after a short time has passed. While the exhaust blower 12 is operating, the gas sensor 15 is in the atmosphere of the indoor air, so that the gas concentration of the indoor air can be detected. Therefore, if the output of the gas sensor 15 falls below the set value during the ventilation operation, the controller 16 stops the ventilation operation.

That is, in this ventilation device, the exhaust air blower 12 is operated, or the gas concentration of the air in the room is detected while the exhaust blower 12 is operating. The output of the gas sensor 15 in the ventilation device is calibrated by operating the bypass blower 20 temporarily and capturing the output of the gas sensor 15 at that time regardless of whether the exhaust blower 12 is operated or stopped. The gas sensor 15 is disposed so as to face the outlet of the bypass 19, and is placed in the atmosphere of the outside air flowing from the bypass 19 to detect the gas concentration of the outside air. After this, Example 1
The output of the gas sensor 15 is calibrated in the same manner as the calibration of the output shown in. As described above, in this ventilator, the configuration for calibrating the output of the gas sensor 15 is simple, and since the main body outer shell 2 does not include any external member, the main body does not increase in size and the installation space is small. Do not increase.

[0049]

As is apparent from the above description of the embodiments, according to the invention of claim 1, the gas sensor can be placed in the atmosphere of the indoor air or the atmosphere of the outside air only by reversing the rotating plate. The configuration for calibrating the output fluctuation of the gas sensor is simple and compact, the size of the entire device is suppressed from increasing, and a ventilation device without increasing the installation space can be obtained.

According to the second aspect of the present invention, the gas sensor can be placed in the atmosphere of the indoor air or the atmosphere of the outside air only by rotating the exhaust blower forward and backward, and the configuration for calibrating the output fluctuation of the gas sensor is provided. Simple and compact,
It is possible to obtain a ventilation device that does not increase the installation space while suppressing the overall size of the device from increasing.

According to the third aspect of the present invention, the gas sensor can be placed in the atmosphere of the outside air only by stopping the exhaust blower and operating the calibration blower, and the configuration for calibrating the output fluctuation of the gas sensor is simple and compact. As a result, it is possible to obtain a ventilation device that does not increase the size of the entire device and does not increase the installation space.

According to the invention of claim 4, the gas sensor can be placed in the atmosphere of the air in the room or in the atmosphere of the outside air by stopping and operating the air supply blower, and the configuration for calibrating the output fluctuation of the gas sensor. Is simple and compact,
It is possible to obtain a ventilation device that does not increase the installation space while suppressing the overall size of the device from increasing.

According to the fifth aspect of the invention, the gas sensor can be placed in the atmosphere of the air in the room or the atmosphere of the outside air only by the operation of the wind direction changing member, and the configuration for calibrating the output fluctuation of the gas sensor is simple. In addition, the ventilation device is compact, and the size of the entire device is suppressed, and the installation space is not increased.

According to the invention of claim 6, the gas sensor can be placed in the atmosphere of indoor air by operating the exhaust blower, and the gas sensor can be placed in the atmosphere of outside air by stopping the exhaust blower, and the output fluctuation of the gas sensor can be changed. The configuration for calibrating the air conditioner is simple and compact, the overall size of the device is suppressed from increasing, and a ventilation device that does not increase the installation space can be obtained.

According to the invention of claim 7, the gas sensor can be placed in the atmosphere of indoor air by operating the exhaust blower, and can be placed in the atmosphere of outside air by operating the bypass blower, and the output fluctuation of the gas sensor is calibrated. The configuration for doing so is simple and compact, the overall size of the device is suppressed from increasing, and a ventilation device that does not increase the installation space can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the configuration of a ventilation device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the function of the ventilation device according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a configuration of a ventilation device according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a configuration of a ventilator according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a configuration of a ventilator according to a fourth embodiment of the present invention.

FIG. 6 is a cross-sectional view showing the configuration of a ventilator according to a fifth embodiment of the present invention.

FIG. 7 is a cross-sectional view showing the function of the ventilation device according to the fifth embodiment of the present invention.

[Fig. 8] Fig. 8 is a cross-sectional view showing a configuration of a ventilator according to a sixth embodiment of the present invention.

FIG. 9 is a cross-sectional view showing the configuration of a ventilator according to a seventh embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a configuration of a conventional ventilation device.

[Explanation of Codes] 2 Main shell 3 Air supply passage 4 Exhaust passage 5 Inlet end 6 Outlet end 7 Inlet end 8 Outlet end 10 Partition wall 11 Air supply blower 12 Exhaust blower 13 Opening 14 Rotating plate 15 Gas sensor 16 Controller 17 For calibration Blower 18 Wind direction changing member 19 Bypass 20 Bypass blower

Claims (7)

[Claims] 1. An air supply passage for supplying outside air into the room, and an exhaust passage adjacent to the air supply passage, which is partially separated by a partition wall, for exhausting the indoor air to the outside. An air supply blower that forms an air supply to the room is provided in the air supply passage, and an exhaust air blower that forms an exhaust air flow to the outside is provided in the exhaust passage, and a part of the partition wall is rotatable. An opening is provided which is closed by a rotating plate provided on the rotating plate, and a gas sensor for detecting the gas concentration in the air is attached to the surface of the rotating plate facing the exhaust passage and an output corresponding to the gas concentration is attached. The operation is configured to control the operation of the air supply blower and the exhaust air blower by the controller, and at the time of the output calibration for calibrating the output fluctuation of the gas sensor, the gas sensor faces the air supply passage. A ventilation device with a structure that temporarily reverses the rotating plate. 2. An air supply passage for supplying outdoor air to the room and an exhaust passage for exhausting indoor air to the outside, wherein an air supply air to the room is formed in the air supply passage. A supply air blower is provided, an exhaust flow is formed in the exhaust passage by forward rotation to the outside of the room, and an exhaust blower that forms an air flow in the opposite direction by reverse rotation is provided, and the gas concentration of the atmosphere in the exhaust passage is detected. Attach a gas sensor that outputs according to the output of this gas sensor, and configure the controller to control the operation of the air supply blower and the exhaust air blower, and adjust the output blower to correct the output fluctuation of the gas sensor. Ventilation device configured to temporarily operate in reverse rotation. 3. An air supply passage for supplying outdoor air to the room and an exhaust passage for exhausting indoor air to the outside, wherein an air supply air for the room is formed in the air supply passage. An air supply blower is provided, an exhaust blower that forms an exhaust flow to the outside of the room and a calibration blower that forms an air flow in the opposite direction are provided in the exhaust passage, and the gas concentration of the atmosphere in the exhaust passage is detected. Then, a gas sensor that outputs according to it is attached, and the operation of the air supply blower and the exhaust air blower is configured to be controlled by the controller by the output of this gas sensor, and in the output calibration for calibrating the output fluctuation of the gas sensor, A ventilation device configured to stop the exhaust blower and temporarily operate the calibration blower. 4. An exhaust gas passage for supplying outside air into the room and an exhaust passage for exhausting indoor air out of the room, wherein the exhaust passage forms an exhaust flow to the outside. Provided with a blower, the air supply passage is provided with an air supply blower that forms an air supply flow into the room, detects the gas concentration of the atmosphere on the indoor side of the air supply passage, and attaches a gas sensor that outputs accordingly. With the output of this gas sensor, the controller controls the air supply blower and the exhaust air blower to operate for a predetermined time, and the gas concentration of the room air is detected by temporarily stopping the air supply blower. The ventilator, wherein the output calibration for calibrating the output fluctuation is performed based on the output of the gas sensor during operation of the air supply / blower. 5. An air supply passage for supplying outdoor air to the room and an exhaust passage for exhausting indoor air to the outside are provided such that their indoor-side open ends are close to each other, and In the air passage, an air supply blower that forms an air supply to the room,
Each of the exhaust passages is provided with an exhaust blower that forms an exhaust flow to the outside of the room, and a movable airflow direction changing member that can change the blowing direction is provided at the indoor opening end of the air supply passage. In the vicinity of the indoor side open end,
A gas sensor that detects the gas concentration of the atmosphere in the exhaust passage and outputs according to it is attached.The output of this gas sensor is configured to control the operation of the air supply blower and the exhaust air blower by the controller, and the output fluctuation of the gas sensor In the output calibration for calibrating, the ventilation device configured to temporarily blow out the supply airflow from the indoor opening end of the air supply passage toward the indoor opening end of the exhaust passage by the wind direction changing member. 6. An air supply passage for supplying outside air into the room and an exhaust passage for exhausting indoor air to the outside, and a supply airflow into the room is formed in the air supply passage. A supply air blower is provided in each of the exhaust passages, and an exhaust blower that forms an exhaust flow to the outside of the room is provided.In the vicinity of the outdoor-side opening end of the exhaust passage, the gas concentration of the atmosphere in the exhaust passage is detected. Install a gas sensor that outputs according to the output of this gas sensor, and configure the controller to control the operation of the air supply blower and the exhaust air blower with the output of this gas sensor. The ventilator, wherein the output calibration for detecting and calibrating the output fluctuation of the gas sensor is performed based on the output of the gas sensor while the exhaust blower is stopped. 7. An air supply passage for supplying outside air into the room, and an exhaust passage adjacent to the air supply passage, which is partially separated by a partition wall, for exhausting the indoor air to the outside. An air supply blower for forming an air supply to the room is provided in the air supply passage, an exhaust air blower for forming an exhaust air flow to the outside is provided in the exhaust passage, and the air supply blower is provided in a part of the partition wall. A bypass that connects the air passage and the exhaust passage is provided, and a bypass blower that forms an air flow from the air supply passage side toward the exhaust passage is provided in this bypass, and a bypass of the atmosphere in the exhaust passage is provided near the bypass of the exhaust passage. A gas sensor that detects the gas concentration and outputs according to it is attached, and the operation of the supply air blower and exhaust air blower is configured to be controlled by the controller based on the output of this gas sensor. The gas concentration is detected by temporarily operating the exhaust blower, and when performing output calibration to calibrate the output fluctuation of the gas sensor, the bypass blower is temporarily operated to perform the ventilation. .