JP2020190348A - Exhaust device - Google Patents

Abstract

To provide an exhaust device which enables a ventilation fan of a ventilation device and a moisture exhaust fan of a laundry dryer to operate in conjunction with each other easily at low costs.SOLUTION: In a system in which a moisture exhaust passage 36 for exhausting moisture from a laundry dryer 30 is joined to a ventilation passage 10, one of a control device 21 which controls operation of a ventilation fan 5 and a control device 42 which controls operation of a moisture exhaust fan 35 of the laundry dryer 30 determines whether or not one of the fan 35 or 5 operates based on detection information on an operation state of the other of the fan 5 or 35, a control object, to change the operation of the other of the fan 5 or 35 in response to a result of the determination.SELECTED DRAWING: Figure 1

Description

The present invention relates to an exhaust device that ventilates and exhausts moisture from a clothes dryer.

Conventionally, as seen in Patent Document 1, for example, a ventilation device that ventilates a bathroom or the like through a moisture exhaust passage for discharging exhaust gas (air containing moisture generated by drying clothes) from a clothes dryer. It is known that the exhaust gas is combined with the ventilation passage of the ventilation passage and discharged to the outside air from the exhaust port of the ventilation passage.

In Patent Document 1, a controller capable of controlling the operation of an intermediate duct fan of a ventilation device and a controller capable of controlling the operation of a moisture exhaust fan of a clothes dryer communicate with each other to operate the ventilation device. A technique for mutually recognizing the situation and the operating status of the clothes dryer and operating the intermediate duct fan and the moisture exhaust fan in cooperation with each other according to the operating status of the ventilation device and the operating status of the clothes dryer is described. ing. Further, Patent Document 1 describes a technique in which the intermediate duct fan and the moisture exhaust fan are operated in cooperation with each other by a controller capable of controlling the operation of both the intermediate duct fan and the moisture exhaust fan.

Japanese Unexamined Patent Publication No. 2004-325041

Among the techniques found in Patent Document 1, in the technique of allowing the controller for the ventilation device and the controller for the clothes dryer to communicate with each other, a wired communication device or a wireless communication device is required for each controller. At the same time, wiring and connection settings for mutual communication are required. Further, in the technology provided with a controller common to the ventilator and the clothes dryer, a controller capable of controlling the operation of both the ventilator and the clothes dryer is required. For this reason, the technique found in Patent Document 1 tends to increase the complexity and cost of the system configuration including both the ventilation device and the clothes dryer.

The present invention has been made in view of this background, and provides an exhaust device capable of easily operating a ventilation fan of a ventilation device and a moisture exhaust fan of a clothes dryer in cooperation with each other at low cost. The purpose is.

The moisture exhaust device of the present invention has a ventilation passage that guides air introduced from an intake port to an exhaust port, a ventilation fan that generates an air flow from the intake port to the exhaust port in the ventilation passage, and an operation of the ventilation fan. Ventilation devices, including a ventilation fan control device for control,
A dehumidification passage through which the dehumidifying gas discharged from the clothes dryer flows, and a dehumidification passage whose downstream end is joined to the ventilation passage on the downstream side of the ventilation fan and the clothes drying in the dehumidification passage. An exhaust device including a moisture exhaust fan that generates an air flow from the machine to the exhaust port and a moisture exhaust fan control device that controls the operation of the moisture exhaust fan.
One of the ventilation fan control device and the moisture exhaust fan control device detects the operating state of one of the ventilation fan and the moisture exhaust fan, which is the control target of the one control device. Based on the information, it is configured to determine whether or not the other fan of the ventilation fan and the moisture exhaust fan is operating, and to change the operation of the one fan according to the result of the determination. (1st invention).

Here, if, for example, only the ventilation fan is operating among the ventilation fan and the exhaust fan, and the operation of the exhaust fan is started, the ventilation passage and the exhaust moisture are exhausted after the operation of the exhaust fan is started. Since the amount of air flowing from the confluence with the passage to the downstream side increases more rapidly than before the operation of the exhaust fan starts, the ventilation resistance of the airflow generated by the ventilation fan increases sharply. As a result, the operating state such as the rotation speed and air volume of the ventilation fan changes.

Similarly, if, for example, only the ventilation fan is operating among the ventilation fan and the exhaust fan, and the ventilation fan starts to operate, the ventilation passage and the exhaust passage after the operation of the ventilation fan starts. Since the amount of air flowing from the confluence with the fan to the downstream side increases sharply compared to before the operation of the ventilation fan starts, the ventilation resistance of the airflow generated by the exhaust fan increases sharply. As a result, the operating state such as the rotation speed and air volume of the moisture exhaust fan changes.

Therefore, in the present invention, one of the ventilation fan control device and the moisture exhaust fan control device is based on the detection information regarding the operating state of one fan that is the control target of the one control device. Determine if the other fan is operating. This makes it possible for the one control device to detect the presence or absence of operation of the other fan without needing to acquire information on the operating state of the other fan from the other control device. ..

Then, the one control device changes the operation of one fan, which is the fan to be controlled, according to the determination result of whether or not the other fan is operating. As a result, the one control device can control the operation of one fan, which is the fan to be controlled, depending on whether or not the other fan is operating.

In this case, the ventilation fan control device and the moisture exhaust fan control device do not need to communicate with each other, and it is sufficient to control the operation of only the fan to be controlled among the ventilation fan and the moisture exhaust fan. Therefore, according to the exhaust device of the present invention, it is possible to easily operate the ventilation fan of the ventilation device in cooperation with the exhaust fan of the clothes dryer at low cost.

In the first invention, the one control device is the detection value of the energizing current of the drive motor of the one fan and the detection value of the rotation speed of the one fan among the ventilation fan and the moisture exhaust fan. It is preferable that it is configured to determine whether or not the other fan is operating based on the detected value of at least one of them (second invention).

Here, the ventilation device generally detects a sensor for detecting the energizing current of the driving motor (electric motor) of the ventilation fan and the rotation speed of the ventilation fan in order to control the operation of the ventilation fan. Similarly, a dehumidifying device for a clothes dryer generally has an energizing current of a driving motor (electric motor) of the dehumidifying fan in order to control the operation of the dehumidifying fan. It is provided with a sensor for detecting the above and a sensor for detecting the rotation speed of the moisture exhaust fan.

Therefore, according to the second invention, the one control device can detect the presence or absence of operation of the other fan based on the detection information obtained from the existing sensor.

In the first invention or the second invention, the one control device may be the ventilation fan control device. In this case, when it is determined that the exhaust fan, which is the other fan, is operating, the air volume of the ventilation fan, which is the one fan, is increased as compared with the case where it is determined that the exhaust fan is not operating. It is preferable to control the operation of the ventilation fan so as to reduce the number (third invention).

According to this, when the exhaust fan is operated while the ventilation fan is operating, the air volume generated by the exhaust fan (the air volume of the exhaust gas) is significantly larger than that when the ventilation fan is stopped. It is prevented that the amount is reduced. As a result, it is possible to prevent the drying time of the clothes by the clothes dryer from becoming excessively long or the drying shortage from occurring.

Further, in the first invention or the second invention, when the ventilation fan control device is configured to control the operation of the ventilation fan so as to maintain a constant air volume of the ventilation fan, one of the above. The control device may be the moisture exhaust fan control device. In this case, when it is determined that the ventilation fan, which is the other fan, is operating, the exhaust humidity is reduced so as to reduce the air volume of the exhaust fan as compared with the case where it is determined that the ventilation fan is not operating. It is preferable to control the operation of the fan (fourth invention).

Here, if the operation of the moisture exhaust fan is started while the ventilation fan is operating, the ventilation resistance of the airflow generated by the ventilation fan increases, so that the air volume of the ventilation fan tends to decrease. In this case, the larger the air volume of the exhaust fan, the greater the degree of decrease in the air volume of the exhaust fan. At this time, by controlling the operation of the ventilation fan so as to maintain the air volume of the ventilation fan constant, the rotation speed of the ventilation fan is increased, which in turn causes an increase in the operating noise of the ventilation fan.

However, according to the fourth invention, when the moisture exhaust fan control device detects the operation of the ventilation fan during the operation of the exhaust fan, the operation control of the exhaust fan is performed so as to reduce the air volume of the exhaust fan. .. As a result, it is suppressed that the air volume of the ventilation fan is significantly reduced as compared with the air volume in the state where the operation of the exhaust fan is stopped, and by extension, the rotation speed of the ventilation fan is suppressed to be significantly increased. As a result, it is possible to prevent the operating noise of the ventilation fan from becoming too loud.

The figure which shows the whole structure of the exhaust system of embodiment (1st embodiment and 2nd embodiment) of this invention. The block diagram which shows the structure concerning the operation control of the bathroom air conditioner provided in the exhaust device of 1st Embodiment. The block diagram which shows the structure concerning the operation control of the exhaust device provided with the exhaust device in 1st Embodiment. The flowchart which shows the processing of the air-conditioning controller shown in FIG. The block diagram which shows the structure concerning the operation control of the exhaust device provided with the exhaust device of 2nd Embodiment. The flowchart which shows the process of the clothes drying control apparatus shown in FIG.

[First Embodiment]
The first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. The exhaust device of the present embodiment includes a bathroom air conditioner 1 having a function as a ventilation device capable of ventilating one or more rooms including a bathroom BR having a bathtub BT, and an exhaust device for exhausting moisture from the clothes dryer 30. Includes a damp device 50.

In the present embodiment, the bathroom air conditioner 1 is a device capable of ventilating, for example, the dressing room UDR in addition to the bathroom BR, and is a device capable of heating the bathroom BR in addition to the ventilation operation.

The bathroom air conditioner 1 includes a main body 2 installed on the upper side of the ceiling of the bathroom BR, and a main ventilation duct 10 and a sub ventilation duct 15 connected to the main body 2. Inside the main body case 2a, which is the outer case (housing) of the main body 2, there is a ventilation fan 5 for exhausting the air in the bathroom BR to the outside through the main ventilation duct 10 during the ventilation operation of the bathroom air conditioner 1. A circulation fan 6 for circulating the air in the bathroom BR through the main body case 2a is mounted during the heating operation of the bathroom air conditioner 1.

The ventilation fan 5 and the circulation fan 6 are electric fans that are rotationally driven by the electric motors 5a and 6a, which are the respective drive motors. Hereinafter, the electric motor 5a will be referred to as a ventilation fan motor 5a, and the electric motor 6a will be referred to as a circulation fan motor 6a.

Of the internal space of the main body case 2a, the space (air passage) on the upstream side of the ventilation fan 5 and the circulation fan 6 is opened in the bathroom BR via the intake port 3 provided on the lower surface of the main body case 2a. There is. Further, in the internal space of the main body case 2a, the space (air passage) on the downstream side of the circulation fan 6 is opened in the bathroom BR through the outlet 4 provided on the lower surface portion of the main body case 2a.

Therefore, when the circulation fan 6 is rotated (during the heating operation of the bathroom air conditioner 1), the air in the bathroom BR is sucked from the intake port 3 into the circulation fan 6, and further from the circulation fan 6 through the outlet 4. It is designed to return to the bathroom BR. In the internal space of the main body case 2a, a heat exchanger 7 that heats the air sucked by the rotational operation of the circulation fan 6 is arranged in the air passage from the intake port 3 to the circulation fan 6. The heat exchanger 7 is a heat exchanger in which hot water heated from a water heater (not shown) is supplied during the heating operation of the bathroom air conditioner 1, and the air sucked from the intake port 3 to the circulation fan 6 is combined with the hot water. Heat by heat exchange. The heat exchanger 7 may be arranged on the downstream side of the circulation fan 6 (the air passage from the circulation fan 6 to the outlet 4).

The main ventilation duct 10 is connected to the main body case 2a so that its upstream end opens into the space (air passage) on the downstream side of the ventilation fan 5 in the internal space of the main body case 2a. The downstream end of the main ventilation duct 10 is connected to an exhaust port 11 that opens to the outside air.

Further, at the upstream end (or the middle part near the upstream end) of the main ventilation duct 10, a backflow of airflow passing through the main ventilation duct 10 (airflow from the downstream side to the upstream side of the main ventilation duct 10) is generated. A backflow prevention plate 12 for preventing is attached. When a forward airflow is generated from the upstream side (ventilation fan 5 side) of the main ventilation duct 10 to the downstream side, the backflow prevention plate 12 swings in a state of opening the main ventilation duct 10 by the wind pressure of the airflow. However, when the backsulfation airflow is generated, the wind pressure of the airflow causes the main ventilation duct 10 to oscillate in a closed state.

The upstream end of the sub-ventilation duct 15 is connected to the intake port 16 provided on the ceiling of the dressing room UDR, and the downstream end is the space (air passage) on the upstream side of the ventilation fan 5 in the internal space of the main body case 2a. It is connected to the main body case 2a so as to open to.

Therefore, when the ventilation fan 5 is rotated (during the ventilation operation of the bathroom air conditioner 1), the air in the bathroom BR is sucked into the ventilation fan 5 from the intake port 3, and the air in the dressing room UDR is sucked into the intake port. 16 is sucked into the ventilation fan 5 through the sub-ventilation duct 15, and these air are further exhausted from the ventilation fan 5 to the outside through the main ventilation duct 10 and the exhaust port 11.

Further, as shown in FIG. 2, the bathroom air conditioner 1 includes a remote controller 20 for the user to perform an operation related to the operation of the bathroom air conditioner 1 and an air conditioner control device 21 having a function of controlling the operation of the bathroom air conditioner 1. To be equipped with. Further, the bathroom air conditioner 1 detects the current sensor 5b for detecting the energizing current of the ventilation fan motor 5a and the rotation speed (rotation speed) of the ventilation fan 5 as sensors for detecting the operating state of the ventilation fan 5. It is equipped with a rotation speed sensor 5c, and as a sensor for detecting the operating state of the circulation fan 6, a current sensor 6b for detecting the energizing current of the circulation fan motor 6a and a rotation speed (rotation speed) of the circulation fan 6 are detected. It is provided with a rotation speed sensor 6c. The rotation speed sensors 5c and 6c may be composed of, for example, a Hall element, a rotary encoder, a resolver, or the like.

The remote controller 20 is installed in a dressing room UDR or the like, and has a display unit 20a for displaying the operating state of the bathroom air conditioner 1, execution of various operations of the bathroom air conditioner 1, and execution conditions (strength of ventilation volume). It has an operation unit 20b for the user to perform an operation or the like instructing the air conditioner control device 21 (conditions such as heating intensity).

Then, in the present embodiment, the operation unit 20b determines whether or not to give priority to drying clothes (whether or not to give priority to exhausting moisture) when the ventilation fan 5 and the moisture exhausting fan 35 described later are simultaneously operated. Includes a clothes drying priority switch 20b1 for designating the air conditioning control device 21. By turning on the clothes drying priority switch 20b1, a signal indicating that clothes drying is prioritized is transmitted from the remote controller 20 to the air conditioning control device 21.

The air conditioning control device 21 is composed of, for example, an electronic circuit unit including a microcomputer, a memory, an interface circuit, and the like, and is mounted on the main body 2. The air conditioning control device 21 can communicate (wired communication or wireless communication) with the remote controller 20 and the control device of the water heater (not shown), and the detection data of the current sensors 5b and 6b and the rotation speed sensors 5c and 6c are input. To.

The air conditioning control device 21 has a function of controlling the operation of the ventilation fan motor 5a and the circulation fan motor 6a as a function realized by both or one of the mounted hardware configuration and the program (software configuration). Further, the air conditioning control device 21 detects the presence or absence of operation of the moisture exhaust fan 35, which will be described later, based on the operating state of the ventilation fan 5 indicated by the detection data of the current sensor 5b and the rotation speed sensor 5c corresponding to the ventilation fan 5. Has the function of

Supplementally, in the present embodiment, in the internal space of the main ventilation duct 10, the sub-ventilation duct 15, and the main body case 2a, from each of the downstream ends of the intake port 3 and the sub-ventilation duct 15, the upstream end of the main ventilation duct 10. The ventilation passage in the present invention is configured with the air passage leading to. Further, the air conditioning control device 21 includes a function as a ventilation fan control device in the present invention.

The clothes dryer 30 is installed in the dressing room UDR. The clothes dryer 30 is generated by drying clothes in a rotating drum 31, a rotary drum 31 into which clothes to be dried are put, an air passage 32 for introducing air for drying clothes into the rotating drum 31, and a rotating drum 31. Moisture exhaust gas (specifically, air generated by adding moisture evaporated from clothes to the air supplied from the air passage 32 into the rotating drum 31) is sucked from the rotating drum 31. It is provided with a moisture exhaust fan 35 for discharging. The clothes dryer 30 is connected to a moisture exhaust duct 36 for guiding the exhaust gas sucked from the rotating drum 31 by the moisture exhaust fan 35 to the outside.

The moisture exhaust fan 35 is an electric fan that is rotationally driven by the electric motor 35a, which is the drive motor thereof, and the rotary drum 31 is rotated so that the exhaust gas in the rotary drum 31 can be sucked by the rotational operation of the exhaust fan 35. It is located on the back side. Hereinafter, the electric motor 35a will be referred to as a moisture exhaust fan motor 35a.

The moisture drain fan motor 35a is connected to the rotary shaft of the moisture drain fan 35 and the rotary drum 31 via appropriate power transmission mechanisms, respectively, to drive the rotation of both the moisture drain fan 35 and the rotary drum 31. Can be used as an actuator for. However, the actuator that rotationally drives the rotary drum 31 may be an actuator different from the moisture exhaust fan motor 35a that rotationally drives the moisture exhaust fan 35.

The moisture drain duct 36 is connected to the clothes dryer 30 so that its upstream end opens on the downstream side of the moisture drain fan 35. The downstream end of the moisture exhaust duct 36 joins the middle portion of the main ventilation duct 10 on the downstream side of the ventilation fan 5. Therefore, the portion of the main ventilation duct 10 on the downstream side from the confluence of the moisture exhaust duct 36 is a common passage for ventilation and moisture exhaust.

The upstream end of the air passage 32 opens into the undressing chamber UDR via an intake port 33 provided in the lower part of the clothes dryer 30, and the downstream end opens into the rotating drum 31 on the front end side of the rotating drum 31. doing. Therefore, when the moisture exhaust fan 35 is rotated, the air in the dressing room UDR is sucked into the rotating drum 31 from the intake port 33 through the air passage 32.

A heat exchanger 34 that heats the air sucked into the rotating drum 31 by the rotational operation of the moisture exhaust fan 35 is arranged in the middle of the air passage 32. The heat exchanger 34 is a heat exchanger in which hot water heated from a water heater (not shown) is supplied during the operation of the clothes dryer 30, and the air flowing through the air passage 32 from the intake port 33 toward the rotating drum 31. Heats the air by heat exchange with hot water in the process of passing through the heat exchanger 34.

As shown in FIG. 3, the clothes dryer 30 further includes an operation unit 40 for the user to perform an operation related to the operation of the clothes dryer 30, and a display unit 41 for displaying various information such as an operating state of the clothes dryer 30. And a clothes drying control device 42 having a function of controlling the operation of the clothes dryer 30.

The clothes drying control device 42 is composed of, for example, an electronic circuit unit including a microcomputer, a memory, an interface circuit, and the like, and an operation signal of the operation unit 40 is input. Then, the clothes drying control device 42 has a function of controlling the display of the display unit 41 and an operation control of the moisture exhaust fan 35 as a function realized by both or one of the mounted hardware configuration and the program (software configuration). It has a function to perform.

Supplementally, in the present embodiment, the moisture exhaust device 50 includes a moisture exhaust fan 35, a moisture exhaust duct 36, and a clothes drying control device 42 as components. In this case, the moisture exhaust duct 36 corresponds to the moisture exhaust passage in the present invention, and the clothes drying control device 42 has a function as the moisture exhaust fan control device in the present invention.

Next, the operation of the exhaust device of the present embodiment will be described. When the user commands the execution of the ventilation operation of the bathroom air conditioner 1 with the remote control 20 of the bathroom air conditioner 1, the air conditioner control device 21 executes the process shown in the flowchart of FIG.

In STEP 1, the air conditioning control device 21 first executes the operation control of the ventilation fan 5 in the normal mode. In this normal mode, the air conditioning control device 21 ventilates the ventilation fan 5 so as to operate the ventilation fan 5 at a predetermined target air volume (constant target air volume) defined according to the degree of ventilation volume set by the remote controller 20. The energization control of the fan motor 5a is performed.

In this case, it is necessary to achieve the target air volume under the condition that the moisture exhaust fan 35 of the clothes dryer 30 is not operating for each target air volume of the ventilation fan 5 (or for each degree of ventilation volume). Control data (map data, calculation formula, etc.) indicating the relationship between the energizing current of the ventilation fan motor 5a and the rotation speed (rotation speed) of the ventilation fan 5 is stored and held in advance in the air conditioning control device 21. Then, the air conditioning control device 21 defines a set of the energization current of the ventilation fan motor 5a detected by the current sensor 5b and the rotation speed of the ventilation fan 5 detected by the rotation speed sensor 5c by the control data. Increase / decrease control of the energizing current of the ventilation fan motor 5a based on the detected value of the energizing current of the ventilation fan motor 5a, the detected value of the rotation speed of the ventilation fan 5, and the above control data so as to converge to a state that satisfies the relationship. I do.

More specifically, the target rotation speed, which is the rotation speed of the ventilation fan 5 satisfying the relationship defined by the control data with respect to the detected value of the energizing current of the ventilation fan motor 5a, and the detected value of the rotation speed. The target energizing current, which is the energizing current of the ventilation fan motor 5a, which satisfies the relationship defined by the control data with respect to the detected value of the rotation speed of the ventilation fan 5, and the detection of the energizing current. The increase / decrease control of the energizing current of the ventilation fan motor 5a is performed so that the deviation approaches zero according to the deviation from the value. As a result, the operation of the ventilation fan 5 is controlled so that the air volume of the ventilation fan 5 is maintained at a constant air volume.

The air conditioning control device 21 determines whether or not the clothes drying priority switch 20b1 of the remote controller 20 is turned on in STEP 2 while controlling the operation of the ventilation fan 5 in the normal mode as described above. Then, when the determination result of STEP2 is negative (when the clothes drying priority switch 20b1 is not turned on), the air conditioning control device 21 continues the process from STEP1.

Further, when the determination result of STEP2 is positive (when the clothes drying priority switch 20b1 is turned ON), the air conditioning control device 21 further bases the operation state detection data of the ventilation fan 5 in STEP3. Then, a process of determining whether or not the moisture exhaust fan 35 of the clothes dryer 30 is operating is executed.

Here, when the moisture drain fan 35 of the clothes dryer 30 is operating (during the drying operation of the clothes in the rotating drum 31), the clothes drying control device 42 appropriately supplies hot water from a water heater (not shown) to the heat exchanger 34. In parallel with the supply, for example, the moisture exhaust fan 35 is rotationally driven by energizing the moisture exhaust fan motor 35a with a current of a predetermined value (constant value). Alternatively, the clothes drying control device 42 responds to the deviation between the detected value of the rotation speed and the target rotation speed so as to maintain the rotation speed of the moisture drain fan 35 at a target rotation speed of a predetermined value (constant value), for example. The energization control of the moisture exhaust fan motor 35a is performed.

Then, when the moisture drain fan 35 of the clothes dryer 30 is operated as described above when the ventilation fan 5 is operated in the normal mode, the clothes dryer is formed at the confluence of the main ventilation duct 10 and the moisture drain duct 36. Since the exhaust gas from the 30 joins the main ventilation duct 10 with the exhaust flowing from the ventilation fan 5 side, the ventilation resistance of the airflow in the main ventilation duct 10 increases, and as a result, the actual rotation speed of the ventilation fan 5 increases. Temporarily increases relatively large.

Therefore, in STEP 3, the air conditioning control device 21 monitors, for example, whether or not a phenomenon occurs in which the detected value of the rotation speed of the ventilation fan 5 increases by a predetermined threshold value or more within a predetermined time, and the phenomenon occurs. When it occurs, the operation of the moisture exhaust fan 35 is detected, and when the phenomenon does not occur, it is determined that the moisture exhaust fan 35 is not operating.

Then, when the operation of the moisture exhaust fan 35 is not detected in STEP 3 (when the determination result in STEP 3 is negative), the air conditioning control device 21 continues the process from STEP 1. When the operation of the moisture exhaust fan 35 is detected in STEP 3 (when the determination result in STEP 3 is positive), the air conditioning controller 21 then operates the ventilation fan 5 in the normal mode in STEP 4. The control is interrupted and the ventilation fan 5 is operated in the clothes drying priority mode.

In this clothes drying priority mode, the air conditioning control device 21 reduces the air volume of the ventilation fan 5 to be smaller than the air volume immediately before the determination result of STEP 3 becomes positive (immediately before the decrease in the rotation speed of the ventilation fan 5 occurs). As a result, the operation of the ventilation fan 5 is controlled.

Specifically, the air conditioning control device 21 controls, for example, the energizing current of the ventilation fan motor 5a to a constant current that is smaller than the detected value of the energizing current immediately before the determination result of STEP 3 becomes affirmative. (Hereinafter, such control is referred to as constant current control of the ventilation fan motor 5a).

Alternatively, the air conditioning controller 21 rotates the ventilation fan 5, for example, with a constant rotation speed smaller than the detected value of the rotation speed of the ventilation fan 5 immediately before the determination result of STEP 3 becomes affirmative as a target rotation speed. Energization control of the ventilation fan motor 5a is performed so as to maintain the number at the target rotation speed (hereinafter, such control is referred to as constant rotation speed control of the ventilation fan motor 5a).

As a result, the operation control of the ventilation fan 5 is controlled so that the air volume of the ventilation fan 5 is smaller than the air volume immediately before the determination result of STEP 3 becomes positive (immediately before the decrease in the rotation speed of the ventilation fan 5 occurs). Will be done.

The air-conditioning controller 21 controls the operation of the ventilation fan 5 in the clothes drying priority mode as described above, and at STEP 5, the moisture exhaust fan of the clothes dryer 30 is based on the detection data of the operating state of the ventilation fan 5. The process of determining whether or not the operation of 35 has stopped is executed.

Here, when the operation of the moisture exhaust fan 35 is stopped, the inflow of the exhaust gas from the moisture exhaust duct 36 to the main ventilation duct 10 is eliminated, so that the ventilation resistance of the airflow in the main ventilation duct 10 is increased by the moisture exhaust fan 35. It returns (decreases) to the ventilation resistance in the state where the operation of the ventilation fan 5 is stopped, and eventually the air volume of the ventilation fan 5 increases. Therefore, the actual rotation speed of the ventilation fan 5 or the energizing current of the ventilation fan motor 5a changes.

Specifically, when the current constant control of the ventilation fan motor 5a is performed in the clothes drying priority mode, the rotation speed of the ventilation fan 5 decreases. Further, when the rotation speed of the ventilation fan motor 5a is constantly controlled in the clothes drying priority mode, the energizing current of the ventilation fan motor 5a increases.

Therefore, when the air-conditioning control device 21 controls the constant current of the ventilation fan motor 5a in the clothes drying priority mode, the detection value of the rotation speed of the ventilation fan 5 is predetermined within a predetermined time in STEP5. It is monitored whether or not it has decreased by more than the threshold value of, and when the detection value of the rotation speed decreases, it is determined that the operation of the moisture exhaust fan 35 has stopped, and the detection value of the rotation speed decreases. If not, it is determined that the operation of the moisture exhaust fan 35 has not stopped.

Alternatively, when the air conditioning controller 21 controls the rotation speed of the ventilation fan motor 5a to be constant in the clothes drying priority mode, the detection value of the energizing current of the ventilation fan motor 5a is within a predetermined time in STEP5. In addition, it monitors whether or not it has increased by a predetermined threshold value or more, and when an increase in the detected value of the energizing current occurs, it is determined that the operation of the moisture exhaust fan 35 has stopped, and the detected value of the energizing current is determined. If the increase does not occur, it is determined that the operation of the moisture exhaust fan 35 has not stopped.

Then, when the air conditioning control device 21 detects that the operation of the moisture exhaust fan 35 has stopped in STEP 5 (when the determination result in STEP 5 is positive), the air conditioning control device 21 controls the operation of the ventilation fan 5 in the clothes drying priority mode. It is stopped and the processing from STEP1 is restarted. As a result, the operation control of the ventilation fan 5 in the normal mode is restarted.

Further, when the stop of the operation of the moisture exhaust fan 35 is not detected in STEP 5 (when the determination result in STEP 5 is negative), the air conditioning control device 21 continues the process from STEP 4. Therefore, the operation control of the ventilation fan 5 in the clothes drying priority mode is continued. If the clothes drying priority switch 20b1 is turned off during the operation control of the ventilation fan 5 in the clothes drying priority mode, the air conditioning control device 21 cancels the clothes drying priority mode and starts from STEP1. The process (operation control of the ventilation fan 5 in the normal mode) is restarted.

In the present embodiment, as described above, the operation of the ventilation fan 5 is controlled. Therefore, during the operation of the ventilation fan 5 in the normal mode, the clothes dryer 30 is operated with the clothes drying priority switch 20b1 turned on. When the exhaust fan 35 is operated, the operation of the ventilation fan 5 is controlled in the clothes drying priority mode. As a result, the air volume of the ventilation fan 5 becomes smaller than that before the operation of the moisture exhaust fan 35 starts. Therefore, it is possible to prevent the amount of exhaust gas exhausted by the exhaust fan 35 from becoming too small as compared with the amount of exhaust gas when the ventilation fan 5 is stopped. As a result, it is possible to prevent the time required for drying the clothes in the clothes dryer 30 from becoming excessively long. Alternatively, it is possible to prevent insufficient drying of the clothes.

Further, the air conditioning control device 21 uses the detection value of the energizing current of the ventilation fan motor 5a by the current sensor 5b or the detection value of the rotation speed of the ventilation fan 5 by the rotation speed sensor 5c as the detection data of the operating state of the ventilation fan 5. By observing the detection data, it is possible to detect the operation of the moisture exhaust fan 35 and its stop without the need for communication with the clothes drying control device 42 or a new sensor. Therefore, it is possible to easily and inexpensively realize the operation control of the ventilation fan 5 according to the presence or absence of the operation of the moisture exhaust fan 35.

In the present embodiment, the air conditioning control device 21 is configured to control the energization of the ventilation fan motor 5a so as to keep the air volume of the ventilation fan 5 constant when the ventilation fan 5 is operated in the normal mode. Teru. However, the air conditioning control device 21 may be configured to control the energization of the ventilation fan motor 5a so as to keep the rotation speed of the ventilation fan 5 constant, for example.

In this case, if the moisture exhaust fan 35 of the clothes dryer 30 is operated while the ventilation fan 5 is operating, the air volume of the ventilation fan 5 decreases, so that the energizing current of the ventilation fan motor 5a decreases. Therefore, it is possible to detect whether or not the exhaust fan 35 is operating depending on whether or not an event occurs in which the energizing current of the ventilation fan motor 5a decreases by a predetermined threshold value or more.

Further, in the present embodiment, the ventilation fan 5 can be operated in the clothes drying priority mode only when the clothes drying priority switch 20b1 provided in the remote controller 20 of the bathroom air conditioner 1 is turned on. However, for example, the clothes drying priority switch 20b1 may be omitted, and the determination process of STEP 2 may be omitted.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. 5 and 6. In this embodiment, only a part of the configuration and the control process are different from the first embodiment. Therefore, the same matters as those in the first embodiment will not be described.

In the present embodiment, instead of providing the clothes drying priority switch 20b1 on the remote controller 20 of the bathroom air conditioner 1, the operation unit 40 of the clothes dryer 30 is provided with a ventilation priority switch 40a as shown in FIG. Then, in the present embodiment, the air conditioning control device 21 does not execute the work control of the clothes drying priority mode described in the first embodiment during the ventilation operation for operating the ventilation fan 5, and the ventilation fan 5 in the normal mode. Operates and controls.

Further, in the present embodiment, the clothes drying control device 42 of the clothes dryer 30 executes the process shown in the flowchart of FIG. 6 during the clothes drying operation. In STEP 11, the clothes drying control device 42 starts the operation control of the moisture exhaust fan 35 in the normal mode while supplying hot water to the heat exchanger 34 from a water heater (not shown). In this normal mode, the clothes drying control device 42 rotates and drives the moisture exhaust fan 35 by, for example, energizing the moisture exhaust fan motor 35a with a current of a predetermined value (constant value) (hereinafter, exhaust in this case). The energization control of the wet fan motor 35a is referred to as the constant current control of the wet fan motor 35a).

Alternatively, the clothes drying control device 42 controls the energization of the moisture exhaust fan motor 35a so as to maintain the rotation speed of the moisture exhaust fan 35 at a predetermined target rotation speed (constant target rotation speed), for example (hereinafter, The energization control of the moisture exhaust fan motor 35a in this case is referred to as constant rotation speed control of the moisture exhaust fan motor 35a).

Whether or not the ventilation priority switch 40a of the operation unit 40 of the clothes dryer 30 is turned on in STEP 12 while the clothes drying control device 42 controls the operation of the moisture exhaust fan 35 in the normal mode as described above. To judge. Then, when the determination result of STEP 12 is negative (when the ventilation priority switch 40a is not turned on), the clothes drying control device 42 continues the process from STEP 11.

Further, when the determination result of STEP 12 is affirmative (when the ventilation priority switch 40a is turned ON), the clothes drying control device 42 further obtains the detection data of the operating state of the moisture exhaust fan 35 in STEP 13. Based on this, a process of determining whether or not the ventilation fan 5 of the bathroom air conditioner 1 is operating is executed.

Here, when the ventilation fan 5 of the bathroom air conditioner 1 is operated during the operation of the moisture exhaust fan 35 in the normal mode, the ventilation fan 5 is used at the confluence of the main ventilation duct 10 and the moisture exhaust duct 36. Since the exhaust air joins the exhaust moisture gas flowing from the moisture exhaust duct 36 into the main ventilation duct 10, the ventilation resistance of the airflow in the moisture exhaust duct 36 increases, and the air volume of the moisture exhaust fan 35 decreases.

Therefore, when the constant current control of the moisture exhaust fan motor 35a is executed in the normal mode, the detected value of the rotation speed of the moisture exhaust fan 35 increases relatively rapidly. Further, when the energization control of the moisture exhaust fan motor 35a in the normal mode is executed by the constant rotation speed control, the detected value of the energization current of the moisture exhaust fan motor 35a decreases relatively rapidly. ..

Therefore, when the clothes drying control device 42 constantly controls the energizing current of the moisture exhaust fan motor 35a in the normal mode, the detection value of the rotation speed of the moisture exhaust fan 35 is within a predetermined time in STEP 13. It monitors whether or not a phenomenon of increasing by a predetermined threshold or more has occurred, detects the operation of the ventilation fan 5 when the phenomenon occurs, and if the phenomenon does not occur, the ventilation fan 5 operates. Judge that it is not.

Alternatively, when the clothes drying control device 42 controls the energization current of the moisture exhaust fan motor 35a at a constant rotation speed in the normal mode, the detected value of the energization current of the moisture exhaust fan motor 35a is set in STEP 13. It monitors whether or not a phenomenon of decreasing by a predetermined threshold or more occurs within a predetermined time, detects the operation of the ventilation fan 5 when the phenomenon occurs, and if the phenomenon does not occur, the ventilation fan 5 Is not working.

Then, when the operation of the ventilation fan 5 is not detected in STEP 13 (when the determination result of STEP 13 is negative), the clothes drying control device 42 continues the process from STEP 11. Further, when the operation of the ventilation fan 5 is detected in STEP 13 (when the determination result of STEP 13 is positive), the clothes drying control device 42 then in STEP 14, the moisture exhaust fan 35 in the normal mode The operation control is interrupted, and the moisture exhaust fan 35 is operated in the ventilation priority mode.

In this ventilation priority mode, the clothes drying control device 42 controls the operation of the moisture exhaust fan 35 so that the air volume of the moisture exhaust fan 35 is smaller than the air volume in the normal mode immediately before the ventilation priority mode. Specifically, when the clothes drying control device 42 constantly controls the energizing current of the moisture exhaust fan motor 35a in the normal mode, the energizing current of the moisture exhaust fan motor 35a is energized in the normal mode. It is controlled to a constant current that is smaller than the current by a predetermined value. That is, the constant current control of the moisture exhaust fan motor 35a is performed with an energizing current smaller than that in the normal mode.

Alternatively, when the clothes drying control device 42 constantly controls the rotation speed of the energizing current of the moisture exhaust fan motor 35a in the normal mode, the target rotation speed of the moisture exhaust fan 35 is set to the target rotation in the normal mode. The rotation speed is set to be lower than the number by a predetermined value, and the energization control of the moisture exhaust fan motor 35a is performed so that the rotation speed of the moisture exhaust fan 35 is maintained at the set target rotation speed. That is, the rotation speed of the moisture exhaust fan motor 35a is constantly controlled at a rotation speed lower than that of the normal mode. As a result, the operation control of the moisture exhaust fan 35 is performed so that the air volume of the moisture exhaust fan 35 in the ventilation priority mode is smaller than the air volume in the normal mode immediately before the ventilation priority mode.

Here, in the present embodiment, the air conditioning control device 21 controls the operation of the ventilation fan 5 in the normal mode described in the first embodiment, and the air volume of the ventilation fan 5 is set by the remote controller 20. The energization control of the ventilation fan motor 5a is performed so as to maintain a predetermined target air volume (constant target air volume) defined according to the degree. Therefore, when the determination result of STEP 13 becomes affirmative, if the operation control of the moisture exhaust fan 35 in the normal mode is continued, the rotation speed of the ventilation fan 5 and the moisture exhaust fan 35 are not operating. It is controlled to a higher rotation speed than the case. As a result, the ventilation noise generated by the rotation of the ventilation fan 5 tends to be excessive.

Therefore, in the present embodiment, in the ventilation priority mode, the energization control of the moisture exhaust fan motor 35a is executed so that the air volume of the moisture exhaust fan 35 is smaller than that in the normal mode as described above. Therefore, the amount of the exhaust gas that joins the main ventilation duct 10 from the exhaust duct 36 is reduced, so that the increase in the ventilation resistance of the airflow in the main ventilation duct 10 is suppressed. As a result, the increase in the rotation speed of the ventilation fan 5 is suppressed, so that the ventilation sound is suppressed from becoming excessively loud.

The clothes drying control device 42 controls the operation of the moisture exhaust fan 35 in the ventilation priority mode as described above, and at STEP 15, the ventilation fan 5 is operated based on the detection data of the operating state of the moisture exhaust fan 35. Executes the process of determining whether or not it has stopped.

Here, when the operation of the ventilation fan 5 is stopped, the exhaust from the ventilation fan 5 to the main ventilation duct 10 is eliminated, so that the moisture exhaust duct 36 and the main ventilation duct on the downstream side of the downstream end of the moisture exhaust duct 36 are eliminated. The ventilation resistance of the airflow in the air duct composed of 10 is restored (decreased) to the ventilation resistance in the state where the operation of the ventilation fan 5 is stopped, and eventually. The air volume of the moisture exhaust fan 35 increases. Therefore, the actual rotation speed of the moisture exhaust fan 35 or the energizing current of the moisture exhaust fan motor 35a changes.

Specifically, when the current constant control of the moisture exhaust fan motor 35a is performed in the ventilation priority mode, the rotation speed of the moisture exhaust fan 35 decreases. Further, when the rotation speed of the moisture exhaust fan motor 35a is constantly controlled in the ventilation priority mode, the energizing current of the moisture exhaust fan motor 35a increases.

Therefore, when the clothes drying control device 42 controls the constant current of the moisture exhaust fan motor 35a in the ventilation priority mode, the detection value of the rotation speed of the moisture exhaust fan 35 is within a predetermined time in STEP15. , Monitors whether or not the phenomenon of decreasing by a predetermined threshold or more has occurred, and if the phenomenon occurs, it is determined that the operation of the ventilation fan 5 has stopped, and if the phenomenon does not occur, ventilation is performed. It is determined that the operation of the fan 5 has not stopped.

Alternatively, when the clothes drying control device 42 controls the rotation speed of the moisture exhaust fan motor 35a to be constant in the ventilation priority mode, the detection value of the energizing current of the moisture exhaust fan motor 35a is predetermined in STEP15. It is monitored whether or not the phenomenon of increasing by a predetermined threshold or more occurs within the time, and when the phenomenon occurs, it is determined that the operation of the ventilation fan 5 has stopped, and when the phenomenon does not occur. Determines that the operation of the ventilation fan 5 has not stopped.

Then, when the clothes drying control device 42 detects that the operation of the ventilation fan 5 has stopped in STEP 15 (when the determination result of STEP 15 is positive), the operation control of the exhaust fan 35 in the ventilation priority mode is performed. It is stopped and the processing from STEP 11 is restarted. As a result, the operation control of the moisture exhaust fan 35 in the normal mode is restarted.

Further, the clothes drying control device 42 continues the process from STEP 14 when the stop of the operation of the ventilation fan 5 is not detected in STEP 15 (when the determination result of STEP 15 is negative). Therefore, the operation control of the moisture exhaust fan 35 in the ventilation priority mode is continued. If the ventilation priority switch 40a is turned off while the operation control of the moisture exhaust fan 35 is being executed in the ventilation priority mode, the clothes drying control device 42 cancels the ventilation priority mode and starts from STEP 11. The process (operation control of the moisture exhaust fan 35 in the normal mode) is restarted.

In the present embodiment, as described above, the operation of the moisture exhaust fan 35 is controlled. Therefore, during the operation of the moisture exhaust fan 35 in the normal mode, the bathroom air conditioner 1 is operated with the ventilation priority switch 40a ON. When the ventilation fan 5 is operated, the operation of the moisture exhaust fan 35 in the ventilation priority mode is controlled. As a result, the rotation speed of the ventilation fan 5 whose operation is controlled so as to keep the air volume constant is prevented from becoming excessively high as compared with the time when the operation of the moisture exhaust fan 35 is stopped, and by extension, the ventilation fan 5 It is possible to prevent the operating noise from becoming excessively loud.

Further, the clothes drying control device 42 sets the detection value of the energizing current of the moisture exhaust fan motor 35a by the current sensor 35b or the detection value of the rotation speed of the moisture exhaust fan 35 by the rotation speed sensor 35c as the operating state of the moisture exhaust fan 35. By observing the detected data, it is possible to detect the operation of the ventilation fan 5 and its stop without the need for communication with the air conditioning controller 21 or a new sensor. .. Therefore, it is possible to easily and inexpensively control the operation of the moisture exhaust fan 35 according to the presence or absence of the operation of the ventilation fan 5.

In the present embodiment, the moisture exhaust fan 35 can be operated in the ventilation priority mode only when the ventilation priority switch 40a provided in the operation unit 40 of the clothes dryer 30 is turned on. However, for example, the ventilation priority switch 40a may be omitted, and the determination process of STE1P2 may be omitted.

Further, in each of the above embodiments, the bathroom air conditioner 1 capable of ventilating the bathroom BR and the dressing room UDR is illustrated as the ventilation device, but the ventilation device in the present invention includes the bathroom BR and the dressing room UDR, as well as a toilet or the like. It may be a device capable of ventilating, or may not have a heating operation function. Further, the bathroom air conditioner 1 may be an air conditioner capable of drying the bathroom BR or blowing air to the bathroom BR in addition to the ventilation operation and the heating operation.

Further, in each of the above-described embodiments, the clothes dryer 30 is a hot water type clothes dryer that heats the air blown to the rotating drum 31 with hot water, but the clothes dryer in the present invention is the air blown to the rotating drum 31. May be heated by an electric heat exchanger. Further, the moisture exhaust fan may be provided in the moisture exhaust passage connected to the clothes dryer.

1 ... Bathroom air conditioner (ventilation device), 3, 16 ... Intake port, 5 ... Ventilation fan, 5a ... Ventilation fan motor (drive motor), 10 ... Main ventilation duct (ventilation passage), 11 ... Exhaust port, 15 ... Sub-ventilation duct (ventilation passage), 21 ... air conditioning control device (ventilation fan control device), 30 ... clothes dryer, 35 ... moisture exhaust fan, 35a ... moisture exhaust fan motor (drive motor), 36 ... moisture exhaust duct ( Moisture drainage passage), 42 ... Clothes drying control device (moisture drainage fan control device), 50 ... Moisture drainage device.

Claims (4)

A ventilation passage that guides the air introduced from the intake port to the exhaust port, a ventilation fan that generates an air flow from the intake port to the exhaust port in the ventilation passage, and a ventilation fan control device that controls the operation of the ventilation fan. Ventilation system including
A dehumidification passage through which the dehumidifying gas discharged from the clothes dryer flows, and a dehumidification passage whose downstream end is joined to the ventilation passage on the downstream side of the ventilation fan and the clothes drying in the dehumidification passage. An exhaust device including a moisture exhaust fan that generates an air flow from the machine to the exhaust port and a moisture exhaust fan control device that controls the operation of the moisture exhaust fan.
One of the ventilation fan control device and the moisture exhaust fan control device detects the operating state of one of the ventilation fan and the moisture exhaust fan, which is the control target of the one control device. Based on the information, it is configured to determine whether or not the other fan of the ventilation fan and the moisture exhaust fan is operating, and to change the operation of the one fan according to the result of the determination. An exhaust device characterized by that. In the exhaust device according to claim 1,
The one control device detects at least one of the detection value of the energizing current of the drive motor of the one fan and the detection value of the rotation speed of the one fan among the ventilation fan and the moisture exhaust fan. An exhaust device characterized in that it is configured to determine whether or not the other fan is operating based on the value. In the exhaust device according to claim 1 or 2.
The one control device is the ventilation fan control device, and when it is determined that the exhaust fan, which is the other fan, is operating, it is more than when it is determined that the exhaust fan is not operating. An exhaust device characterized in that the operation of the ventilation fan is controlled so as to reduce the air volume of the ventilation fan, which is one of the fans. In the exhaust device according to claim 1 or 2.
The ventilation fan control device is configured to control the operation of the ventilation fan so as to maintain a constant air volume of the ventilation fan.
The one control device is the moisture exhaust fan control device, and when it is determined that the ventilation fan, which is the other fan, is operating, the ventilation fan is determined not to be operating. An exhaust device characterized in that the operation of the moisture exhaust fan is controlled so as to reduce the air volume of the exhaust exhaust fan.