JP4678274B2 - Information display device and ventilation device - Google Patents

Description

  The present invention relates to an information display device and a ventilation device suitable for application to a ventilation device that ventilates a room. Specifically, by calculating and displaying information such as the air volume to the ventilation fan and the length of the duct connected to the ventilation fan (equivalent to a straight pipe) as inspection information, etc., without installing an air flow meter at each inspection In addition, the information such as the air volume of the ventilation fan and the duct length can be displayed immediately, and an information display device that can easily grasp the operation status of the ventilation fan at the time of periodic inspection is provided.

  As an air conditioner, a ventilator installed indoors is known. In such a ventilator, the operating state of the ventilation fan installed in the ventilator is checked before completion (before delivery). In the case of a ventilation fan, it is checked whether the airflow is more than anything and meets the specified airflow. To determine whether the airflow is the specified airflow, install an airflow meter at the end of the ventilator main body and the conveying member (duct or terminal member) and measure it.

  Regarding the air volume, there is a known technology that controls the loss resistance of the duct connected to the ventilation fan so that it becomes the appropriate ventilation air volume, but the function to display the air volume on the display unit is added. (For example, patent document 1 etc.).

  Moreover, when examining the construction state of a ventilation apparatus, the duct length of the duct connected to the ventilation fan may be measured. This is because when a ventilation fan is installed, a duct piped between the ventilation fan and the exhaust grill may not be piped as designed. When not according to the design drawing, the piping length (duct length) at the time of design may be longer or the number of bent parts may increase, resulting in piping different from the design drawing.

  This is because if the duct length is not as designed, there will be a problem that the predetermined air volume cannot be secured, the operating load on the ventilation fan increases, and the noise increases.

JP 2000-28192 A

  Thus, in order to confirm the state of construction of the ventilation device, information on the entire ventilation device such as the air volume of the ventilation fan and the duct length is indispensable as the inspection information.

  Currently, such information on ventilation fans is usually measured on the spot or obtained by measurement. For example, an air flow meter must be set on the air path of a ventilation fan to directly measure the air flow, or a duct length equivalent to a straight pipe must be calculated by inputting an actual air flow value to a duct length calculation device. However, if such an apparatus is used, it is difficult to easily obtain target inspection information. Preliminary problem is that minimum inspection information can be easily obtained.

  Therefore, the present invention has been made to solve such problems, and information that makes it possible to easily obtain the minimum necessary information (inspection information, etc.) such as a ventilator without installing an air flow meter. A display device or the like is proposed. By incorporating the display device in a ventilation device, the efficiency of inspection work can be improved.

In order to solve the above-described problems, an information display device according to the present invention is based on first information detecting means for detecting first information for a ventilation means and first information detected by the first information detecting means. 2. An information display device comprising a second information calculating means for calculating two information and a display means for displaying the second information calculated from the second information calculating means , wherein the first information is an air volume of the ventilation means. The second information is a duct length .

  The ventilator according to the present invention includes an exhaust unit that exhausts air to the outdoors, a control unit that controls the exhaust unit, and an operation unit that generates control information for the control unit. A display unit is provided, and the control unit calculates the first information and the second information of the exhaust means, respectively, and displays the second information on the display unit.

  The information display device according to the present invention can be applied to a ventilation device. In that case, the minimum information about the ventilator, for example, inspection information, is displayed on a display unit on a remote control operation unit (operation panel) provided in the room. The inspection information is information that is referred to as a cause investigation when a construction failure occurs, and of course is also referred to during maintenance inspection. The minimum inspection information is the air volume information (first information) regarding the ventilation fan, and the duct length information (second information) to the exhaust grille connected to the ventilation fan. Since indoor air is collected and exhausted, it is more convenient if the concentration of the volatile organic compound (VOC) in the room can be displayed as the first or second information.

  The first information detecting means is an air volume calculating means, such as a load detecting means for detecting the load of the motor that drives the ventilation fan, a wind pressure for calculating the air volume by measuring the wind pressure and the wind speed, and the like. Measuring means can be considered. As the motor load detecting means, the number of rotations of the motor may be detected. Rather than directly detecting the motor speed, if a frequency generator (FG) is attached to this motor, it can be converted into the motor speed by counting the number of FG pulses.

  For calculating the air volume as the second information, a characteristic curve indicating the relationship between the motor rotation speed N and the air volume Q is used.

  The duct length of the ventilation fan is obtained as a length corresponding to a straight pipe. The duct length is first determined from the air flow Q and the pressure loss curve (PQ curve) of the duct, and the duct length corresponding to the straight pipe is calculated from the resistance loss curve of the duct corresponding to the pressure loss.

  Selection of the information calculation / display mode also serves as a button for selecting the ventilation operation mode. The operation time of this button is monitored to determine which mode it is in. The calculation of the air volume and the calculation of the duct length are directly obtained by using tabulated data. Therefore, the air volume can be directly obtained from the data table showing the relationship between the rotational speed and the air volume, and the duct length can be directly obtained from the data table showing the relation between the rotational speed, the pressure loss and the duct resistance loss. Therefore, when the information calculation / display mode is selected, the inspection information can be immediately calculated and displayed if the ventilation fan is driven.

  In the present invention, information such as the air volume for the ventilation fan and the duct length corresponding to the straight pipe can be calculated and displayed, and the inspection information and the like can be calculated and displayed.

  According to this, second information such as the duct length corresponding to the straight pipe of the duct connected to the ventilation fan based on the first information such as the air volume information obtained by installing an air volume meter etc. at each inspection. The basic inspection information can be obtained very easily without taking time and effort.

  Further, in the present invention, it is possible to calculate and display the air volume for the ventilation fan and the duct length corresponding to the straight pipe of the duct provided in the ventilation fan in the control unit that controls the ventilation fan by switching a plurality of operation modes. It is a thing.

  According to this, when there is a problem in the construction of the ventilator or during periodic inspection, the operating status of the ventilation fan can be easily displayed and grasped, so this inspection information can be used as a clue to investigate the cause of the problem. There are advantages you can do.

  Hereinafter, the case where the information display device of the present invention and the ventilation device provided with the information display device are applied to a bathroom air conditioner will be described with reference to the drawings.

  FIG. 1 shows an installation example of a bathroom air conditioner 1 to which the present invention can be applied, and shows a state where the bathroom air conditioner 1 is installed in a bathroom 32 adjacent to a washroom 31. The bathroom air conditioner 1 is installed on the ceiling of the bathroom 32. The ceiling panel of the bathroom 32 is formed with an opening into which the lower side of the bathroom air conditioner 1 enters. The bathroom air conditioner 1 is attached so that the front panel 5 attached to the lower side of the apparatus is exposed. Actually, it is attached by hanging from the ceiling or fixed to the ceiling panel.

  The other room exhaust duct 34 is connected to the other room exhaust duct connecting portion 33 provided in the bathroom air conditioner 1. A front end portion of the other-room exhaust duct 34 serves as a toilet exhaust inlet 35 provided on the ceiling of the toilet 31.

  An exhaust duct 37 is connected to the exhaust duct connection portion 36 provided in the bathroom air conditioner 1. The tip of the exhaust duct 37 is connected to an exhaust grille 38 attached to the outer wall of a building (not shown). With this configuration, the air in the bathroom 32 sucked in by the bathroom air conditioner 1 and the air in the washroom 31 sucked through the other room exhaust duct 34 are exhausted outside the building through the exhaust duct 37 in this example. Can do.

  Since the bathroom air conditioner 1 has a drying function for drying laundry and the like, the bathroom 32 includes a land re-pipe 39 for hanging the laundry and the like. The air blowing direction is set so that the air blown from the bathroom air conditioner 1 hits the laundry suspended from the land re-pipe 39. When the air blown out by the bather outside the bathtub 32a directly hits the bather, it may feel cold, but by setting the blowing direction to the land re-pipe 39 side, direct blowing out to the bather is possible. Can be avoided. It should be noted that this adjustment of the blowing direction is free.

  The bathroom door 40 installed at the entrance of the bathroom 32 is provided with an air intake 40a at the lower part thereof so that the air in the bathroom 31 can be taken into the bathroom 32.

  In FIG. 1, the installed bathroom air conditioner 1 has only one other room exhaust duct connection portion 33 (another room exhaust air inlet 2 c). A room exhaust duct connection part is provided, and not only exhaust from the washroom 31 but also exhaust from the toilet is possible.

  Of course, the present invention can also be applied to a bathroom air conditioner having only an exhaust treatment mechanism from the bathroom 31 and the bathroom 32, and a plurality of other room exhaust suction ports are provided to suck in exhaust air from a plurality of other rooms, Even if it is configured to exhaust from the other-chamber exhaust duct 34, it may be configured such that the exhaust from the other chamber is not provided and the exhaust from the other chamber is not sucked.

  FIG. 2 is an exploded view of the essential parts showing an example when the present invention is applied to a bathroom air conditioner. 3 shows an AA cross section of the main part in the configuration of FIG. 2, and FIG. 4 shows a BB cross section of the main part of the configuration of FIG. Further, in FIG. 3 and FIG. 4, a part of the see-through state is shown by a broken line for explanation.

  As shown in FIGS. 2 to 4, the bathroom air conditioner 1 includes a main body case 2, a ventilation unit 3, a circulation unit 4, and a front panel 5. The main body case 2 is a rectangular case having a predetermined height as shown in FIG. As shown in FIGS. 3 and 4, the ventilation unit 3 and the circulation unit 4 are directly attached to the inside of the main body case 2 so that the ventilation unit 3 is positioned above the circulation unit 4. Here, the ventilation unit 3 is detachably attached to the main body case 2, and the circulation unit 4 is detachably attached to the main body case 2 and the ventilation unit 3.

  As shown in FIG. 3, a flange 2a is provided on the lower open portion side of the main body case 2, and the front panel 5 is mounted and fixed using the flange 2a. The side surface of the main body case 2 is provided with an exhaust port 2b for exhausting to the outdoors and an exhaust port 2c for other chambers for sucking air from a bathroom other than the bathroom. The main body case 2 is made of non-combustible material. This example is made of iron in consideration of manufacturability and cost.

  As shown in FIGS. 3 and 4, the ventilation unit 3 includes a ventilation fan unit 6, a ventilation suction part A 7 a, and a circuit board part 8. The ventilation fan unit 6 includes a multi-blade ventilation fan 9 and a ventilation fan motor 10 that rotationally drives the ventilation fan 9, and further includes a ventilation fan case 11 that forms an air passage. Therefore, the ventilation means is constituted by the ventilation fan 9, the ventilation fan motor 10, and the ventilation fan case 11.

  The ventilation fan case 11 has a ventilation fan suction port 9a formed along the axial direction of the ventilation fan 9, and the ventilation fan 9 is attached to the main body case 2 with the ventilation fan suction port 9a facing upward. The ventilation fan case 11 is attached and fixed to the main body case 2 so as to maintain a predetermined height L between the ventilation fan case 11 and the main body case 2. This is to ensure a predetermined air path.

  Further, the opening formed in the blowing direction of the ventilation fan case 11 becomes the exhaust port 2 b of the main body case 2. Thus, an exhaust air passage 12 is formed in which the inside of the ventilation fan case 11 and the exhaust port 2b of the main body case 2 communicate with each other.

  As shown in FIG. 4, the ventilation suction portion A <b> 7 a is formed of a cylindrical member whose upper surface and lower surface are opened, and is attached to the side portion of the ventilation fan case 11 while maintaining a predetermined height L. A ventilation suction part B7b provided in the circulation unit 4 is connected to the lower end surface of the ventilation suction part A7a. The ventilation suction part B7b is also a cylindrical body with both ends open, and is in a state of communicating with the inner space of the ventilation suction part A7a. This inner space becomes a part of the suction air passage 13 for ventilation.

  Further, the other-chamber exhaust suction air passage 14 is formed by the other-chamber exhaust suction port 2c for sucking air from other rooms such as a dressing room and toilet, and the space above the ventilation fan unit 6 inside the main body case 2. .

  As shown in FIG. 3, the side portion of the ventilation fan unit 6 is a circuit board portion 8. A circuit board for controlling the bathroom air conditioner 1 is stored in the circuit board unit 8.

  As shown in FIGS. 3 and 4, the circulation unit 4 includes a circulation fan unit 15, a heater 16, a blow-out portion 17, a ventilation suction portion B 7 b, and a driving chamber for the shutter 26 (an electric chamber, not shown). Consists of.

  The circulation fan unit 15 includes a multiblade circulation fan 19 and a circulation fan motor 20 that rotationally drives the circulation fan 19. The circulation fan unit 15 has a circulation fan case 21 for forming an air passage, and a circulation fan 19 and a circulation fan motor 20 are attached and fixed at predetermined positions inside the circulation fan case 21. In the embodiment shown in FIG. 3, the circulation fan 19 functions as an air supply fan, and the circulation fan motor 20 functions as an air supply fan motor. Therefore, since the circulation fan case 21 functions as an air supply fan case, the circulation fan 19, the circulation fan motor 20, and the circulation fan case 21 constitute an air supply means.

  The circulation fan case 21 is attached to the main body case 2 with a circulation suction port 22 formed along the axial direction of the circulation fan 19 and the circulation suction port 22 facing the lower surface. A blowout portion 17 is attached to the opening on the side surface of the circulation fan case 21. The blowout part 17 is a hollow cylindrical body having two openings on the suction side and the blowout side. The suction side opening is attached to the circulation fan case 21, and the blowout side opening is in a state of facing the lower surface. An opening facing the lower surface of the blowout portion 17 serves as a blowout port 23. Since the air outlet 23 and the inside of the circulation fan case 21 communicate with each other through the inside of the blowout portion 17, this communication portion functions as the circulation air passage 24.

  A heater 16 is fixed inside the blowout portion 17 that forms the circulation air passage 24. As the heater 16, for example, a PTC (Positive Temperature Coefficient) heater can be used.

  As shown in FIG. 4, the ventilation suction portion B <b> 7 b is a cylindrical body whose upper surface and lower surface are open, and is located on the side portion of the blowing portion 17. An open portion on the lower surface of the ventilation suction portion B7b forms a ventilation suction port 25. In a state where the circulation unit 4 is mounted on the main body case 2 and the ventilation unit 3, the upper surface of the ventilation suction portion B7b of the circulation unit 4 and the lower surface of the ventilation suction portion A7a of the ventilation unit 3 described above are connected together. Become. As a result, the ventilation suction portion 7 is formed by the ventilation suction portion A7a of the circulation unit 4 and the ventilation suction portion B7b of the ventilation unit 3 as described above, and the inside thereof becomes the ventilation suction air passage 13.

  As shown in FIG. 4, a shutter 26 is rotatably provided in the vicinity of the ventilation inlet 25 of the ventilation suction part B7b. Although not shown, a shutter drive motor (not shown) is connected to the shutter shaft 27 of the shutter 26 via a drive gear or the like. The drive motor is attached and fixed in the electric chamber of the main body case 2. A stepping motor is used as the drive motor. By driving the shutter drive motor, the shutter 26 is rotated, and the opening and closing (opening degree) of the ventilation inlet 25 can be adjusted by rotating the shutter 26.

  As an aspect of the operation mode, consider an aspect in which the ventilation fan 9 is driven in a state where the ventilation inlet 25 is opened. In this operation mode, air flows are generated inside and outside the bathroom air conditioner 1 respectively. That is, the ventilation fan 9 sucks the outside air of the bathroom air conditioner 1 from the ventilation inlet 25 through the ventilation inlet 13. Furthermore, the other room air is sucked from the other room exhaust air inlet 2c through the other room exhaust air passage 12. The ventilation fan 9 blows out (exhausts) these sucked air from the exhaust port 2b to the outside of the bathroom air conditioner 1 through the exhaust air passage 12.

  Moreover, when the circulation fan 19 and the heater 16 are operated as another mode of the operation mode, air flows are generated inside and outside the bathroom air conditioner 1 respectively. When the circulation fan 19 is driven, the circulation fan 19 sucks the outside air of the bathroom air conditioner 1 from the circulation inlet 22. Then, the sucked air is blown out (exhausted) from the air outlet 23 to the outside of the bathroom air conditioner 1 through the circulation air passage 24. The air blown out of the circulation unit 4 by the heater 16 is warmed in the middle of the circulation air passage 24. More detailed operation modes will be described later.

  When the bathroom air conditioner 1 is configured as shown in FIGS. 2 to 4, the bathroom air conditioner 1 is configured because the ventilation unit 3 and the circulation unit 4 are directly attached to the metal main body case 2. A large space for mounting each component can be taken.

  Therefore, since a large-diameter fan unit can be used, it is possible to obtain the same air volume suction and blown air volume at a lower fan rotational speed. This makes it possible to reduce the fan noise and size.

  Since the circulation unit 4 is configured to be detachable with respect to the main body case 2 and the ventilation unit 3, there is a feature that the maintainability of the circulation unit 4 and the ventilation unit 3 is improved.

  As shown in FIG. 1, an operation unit (operation panel) 42 for controlling the bathroom air conditioner 1 is attached to a predetermined position on the wall surface of the washroom 31. The operation unit 42 is a remote control device.

  FIG. 5 is a configuration diagram illustrating an example of the operation unit 42. The operation unit 42 includes a display unit 42a using an LCD or the like and various operation buttons. The operation buttons are buttons for selecting an operation mode, and in this example, a heating mode button 42b for selecting a heating operation mode, a cool air mode button 42c for selecting a cool air operation mode, and a drying operation mode are selected. A drying mode button 42e is provided. Further, a ventilation mode button 42d for selecting the ventilation operation mode is provided. As will be described later, the ventilation mode button 42d includes the air volume of the ventilation fan 9 provided in the bathroom air conditioner 1, and the ventilation fan 9 and the exhaust grill 38. This is a combined use with a measurement button for measuring the duct length of the exhaust duct 37 connected between the two (the actual duct length after construction).

  In this example, it is judged that the single pressing operation is the selection of the ventilation operation mode, and the measurement mode is selected when the button is pressed for more than 2 seconds, for example, for 2 seconds or longer. Judging that it was done. Details will be described later.

  The operation unit 42 is further provided with a lamp (LED or the like) 42f corresponding to each button, for example, so that the operator can confirm the selected operation mode, and the lamp 42f corresponding to the button of the selected operation mode is lit. It is supposed to be. By combining the operations of the various buttons 42b to 42e and the timer button 42g, a desired operation mode is executed at the set time.

  FIG. 6 and subsequent figures are specific examples of the bathroom air conditioner 1 that operates according to the selected operation mode.

(1) Ventilation operation mode FIG.6 and FIG.7 shows the operation state of the bathroom air conditioner 1 at the time of ventilation operation mode. When the control unit 41 (described later) detects that the ventilation mode button 42d has been pressed, the ventilation operation mode is executed.

  In the ventilation operation mode, the ventilation fan 9 is driven by the ventilation fan motor 10, and the shutter 26 rotates to open the ventilation inlet 25 of the ventilation inlet 7. The circulation fan 19 is controlled to stop. By opening the ventilation inlet 25, the air in the bathroom 32 is drawn from the ventilation inlet 25 through the ventilation inlet 5 c of the front panel 5. The air sucked from the ventilation suction port 25 passes through the ventilation suction air passage 13 and is sucked into the ventilation fan 9.

  The air in the other room such as the washroom 31 is sucked through the other room exhaust duct 34 and the other room exhaust suction port 2c. The air sucked from the other chamber exhaust air inlet 2 c is sucked into the ventilation fan 9 through the other chamber exhaust air passage 12. The air sucked into the ventilation fan 9 passes through the exhaust air passage 12 and the exhaust port 2b, and is further exhausted from the exhaust grille 38 to the outside through the exhaust duct 37. By exhausting the air in the bathroom 32 to the outside, the air in the washroom 31 and other rooms is sucked in from the air intake 40a provided in the bathroom door 40 and the undercut provided in the doors of other rooms. .

  By executing the ventilation operation mode, steam and moisture in the bathroom 32 can be exhausted to suppress condensation and the like, thereby suppressing the occurrence of mold.

  The ventilation operation mode includes a 24-hour ventilation operation mode in addition to the normal ventilation operation mode described above. In the 24-hour ventilation operation mode, the ventilation fan 9 operates to ventilate the house so that a predetermined number of ventilations (for example, 0.5 times / hour) is satisfied with respect to the volume of the entire house or a predetermined area of the house.

  The 24-hour ventilation operation mode is normally continuously operated, but a predetermined number of ventilations can also be realized by intermittent operation. The 24-hour ventilation operation mode is executed by operating the button 42h of the operation unit 42 shown in FIG. During the operation in the 24-hour ventilation operation mode, the ventilation fan 9 is driven by the ventilation fan motor 10 in the same manner as in the normal ventilation operation mode described above. Further, the shutter 26 is rotated by the shutter motor 30, and the ventilation suction port 25 of the ventilation suction unit 7 is opened.

  When the ventilation fan 9 is driven and the ventilation inlet 25 is opened, the air in the bathroom 32 is sucked from the ventilation inlet 25 through the ventilation inlet 5 c of the front panel 5. The air sucked from the ventilation suction port 25 passes through the ventilation suction air passage 13 and is sucked into the ventilation fan 9.

  The air in the other room such as the washroom 31 is sucked through the other room exhaust duct 34 and the other room exhaust suction port 2c. The air sucked from the other chamber exhaust air inlet 2 c is sucked into the ventilation fan 9 through the other chamber exhaust air passage 12. The air sucked into the ventilation fan 9 passes through the exhaust air passage 12 and the exhaust port 2b, and is further exhausted from the exhaust grille 38 to the outside through the exhaust duct 37.

  When the ventilation mode button 42d is selected in the state where the 24-hour ventilation operation mode is being executed, the air to be ventilated in the entire house is maintained at a predetermined amount by the following method. When the ventilation mode button 42d is selected in the state where the 24-hour ventilation operation mode is being executed, the opening degree of the shutter 26 of the ventilation inlet 25 is widened and the amount of air sucked from the bathroom 32 is increased. . As a result, the amount of air in the other room sucked through the other room exhaust air inlet 2c is reduced, and the air ventilated in the entire house is kept at a predetermined amount.

  When there are a plurality of other-chamber exhaust suction ports 2c, an electric shutter is provided in the other-chamber exhaust duct connecting portion 33, and the opening of the shutter is reduced to reduce the rest of the toilet 31 and the like. The amount of air sucked from the room may be reduced, and the air ventilated throughout the house may be maintained at a predetermined amount.

  An illumination switch or the like in the other room such as the washroom 31 may be used as the other room ventilation switch so that the air ventilated in the entire house is kept at a predetermined amount. When the other room ventilation switch is selected, the opening degree of the shutter 26 of the ventilation inlet 25 is narrowed, the amount of air sucked from the bathroom 32 is reduced, and the air in the other room such as the washroom 31 etc. The amount of suction is increased. As a result, the amount of air ventilated throughout the house is maintained at a predetermined amount.

  In addition, since the ventilation fan inlet 9a of the ventilation fan 9 is arranged on the upper surface, even if the ventilation operation mode is always performed in the 24-hour ventilation operation mode, the operation sound (noise) of the fan is generated in the bathroom 32 and the bathroom 32. It can prevent leaking into the washroom 31 or the like.

(2) Heating operation mode FIG.8 and FIG.9 shows the operation state of the bathroom air conditioner 1 at the time of heating operation mode. When the heating mode button 42b is pressed, the heating operation mode is executed. In the heating operation mode, the shutter 26 is rotated and the ventilation inlet 25 of the ventilation suction section 7 is closed. The rotation of the ventilation fan 9 is stopped. In the heating operation mode, the circulation fan motor 20 drives the circulation fan 19. Further, the heater 16 is energized in the heating operation mode.

  When the circulation fan 19 is driven by the circulation fan motor 20, the air in the bathroom 32 is sucked from the circulation inlet 22 through the circulation inlet 5 b of the front panel 5. Air sucked from the circulation inlet 22 passes through the circulation air passage 24 and is blown out from the outlet 23 into the bathroom 32 through the outlet 5 a of the front panel 5. Since the heater 16 is disposed in the circulation air passage 24, the air passing through the circulation air passage 24 is warmed and blown out from the outlet 23 when the heater 16 is energized and heated. Thereby, heating operation mode can be performed and the inside of the bathroom 32 can be heated, circulating the air in the bathroom 32, and room temperature can be raised.

  In the above description, the rotation of the ventilation fan 9 is stopped. However, in order to exhaust the air sucked from the other rooms such as the washroom 31 and the like, the ventilation fan 9 may be rotated while the ventilation inlet 25 of the ventilation suction section 7 is closed in the heating operation mode. Good. By closing the ventilation inlet 25 of the ventilation inlet 7, it is possible to prevent the warmed air in the bathroom 32 from escaping out of the bathroom 32.

(3) Drying operation mode FIG.10 and FIG.11 shows the operation state of the bathroom air conditioner 1 at the time of a drying operation mode.
When the drying mode button 42e is pressed, the drying operation mode is executed. In the dry operation mode, the ventilation fan 9 is driven by the ventilation fan motor 10. Further, the shutter 26 is rotated by the shutter motor 30, and the ventilation suction port 25 of the ventilation suction unit 7 is opened. When the ventilation fan 9 is driven and the ventilation inlet 25 is opened, the air in the bathroom 32 is drawn from the ventilation inlet 25 through the ventilation inlet 5c of the front panel 5. The air sucked from the ventilation suction port 25 passes through the ventilation suction air passage 13 and is sucked into the ventilation fan 9.

  The air in the other room such as the washroom 31 is sucked through the other room exhaust duct 34 and the other room exhaust suction port 2c. The air sucked from the other chamber exhaust air inlet 2 c is sucked into the ventilation fan 9 through the other chamber exhaust air passage 12. The air sucked into the ventilation fan 9 passes through the exhaust air passage 12 and the exhaust port 2b, passes through the exhaust duct 37, and is exhausted from the exhaust grill 38 to the outside. By exhausting the air in the bathroom 32 to the outside, the air in the bathroom 31 and the like is sucked from the air intake port 40 a provided in the bathroom door 40.

  In the drying operation mode, the circulation fan motor 20 drives the circulation fan 19 and energizes the heater 16. When the circulation fan 19 is driven by the circulation fan motor 20, the air in the bathroom 32 is sucked from the circulation inlet 22 through the circulation inlet 5 b of the front panel 5. Air sucked from the circulation inlet 22 passes through the circulation air passage 24 and is blown out from the outlet 23 into the bathroom 32 through the outlet 5 a of the front panel 5. Since the heater 16 is disposed in the circulation air passage 24, the air passing through the circulation air passage 24 is warmed and blown out from the outlet 23 when the heater 16 is energized and heated.

  Accordingly, by executing the drying operation mode, the warm air is blown out into the bathroom 32, and the laundry hung on the land re-pipe 39 can be dried. A part of the air in the bathroom 32 is exhausted to the outside, and the air in the bathroom 31 is ventilated by taking in air from the air intake port 40a, so that moisture etc. are discharged and the laundry is discharged. Drying can be promoted.

(4) Cool Wind Operation Mode The cool wind operation mode will be described with reference to FIGS. 10 and 11 again. When the cool breeze mode button 42c is pressed, the cool breeze operation mode is executed. In the cool air operation mode, the ventilation fan 9 is driven by the ventilation fan motor 10, and the shutter 26 is rotated to open the ventilation inlet 25 of the ventilation inlet 7.

  When the ventilation fan 9 is driven and the ventilation inlet 25 is opened, the air in the bathroom 32 is sucked from the ventilation inlet 25 through the ventilation inlet 5 c of the front panel 5. The air sucked from the ventilation suction port 25 passes through the ventilation suction air passage 13 and is sucked into the ventilation fan 9. The air in the other room such as the washroom 31 is sucked through the other room exhaust duct 34 and the other room exhaust suction port 2c. The air sucked from the other chamber exhaust air inlet 2 c is sucked into the ventilation fan 9 through the other chamber exhaust air passage 12. The air sucked into the ventilation fan 9 passes through the exhaust air passage 12 and the exhaust port 2b, and is exhausted from the exhaust grill 38 to the outside through the exhaust duct 37. By exhausting the air in the bathroom 32 to the outside, the air in the bathroom 31 and the like is sucked from the air intake port 40 a provided in the bathroom door 40.

  When the circulation fan 19 is driven by the circulation fan motor 20, the air in the bathroom 32 is sucked from the circulation inlet 22 through the circulation inlet 5 b of the front panel 5. Air sucked from the circulation inlet 22 passes through the circulation air passage 24 and is blown out from the outlet 23 into the bathroom 32 through the outlet 5 a of the front panel 5.

  As described above, in the cool air operation mode, the high-humidity air in the bathroom 32 is exhausted, and the air in the bathroom 32 is circulated while the cool air according to the temperature in the bathroom 32 is blown out. It can be used as an electric fan. The rotation of the ventilation fan 9 may be stopped, and the ventilation inlet 25 may be closed.

  In addition, since the ventilation fan inlet 9a of the ventilation fan 9 is arrange | positioned on the upper surface, it can prevent that the driving | running | working sound of the fan at the time of taking in the air in the bathroom 32 and another room | chamber interior leaks in the bathroom 32 largely. Thereby, the driving sound of the bathroom air conditioner 1 leaking into the bathroom 32 is reduced.

  In order to realize the various operation modes as described above, the bathroom air conditioner 1 is provided with a control system as shown in FIG. An example of the control system will be described with reference to the system diagram of the main part of FIG. 12. As described above, the control unit 41 including a CPU (Central Processing Unit) and a memory that controls the entire apparatus includes a ventilation fan. A ventilation fan motor 10 that drives 9, a circulation fan motor 20 that drives the circulation fan 19, a shutter motor 30 that drives the shutter 26, a heater 16, an operation unit 42, and the like are connected.

  The control unit 41 activates a processing program stored in a memory means (not shown) such as a ROM, thereby enabling a heating operation mode, a ventilation operation mode, a cool air operation mode, a drying operation mode, an information calculation / display mode, and the like. Various operation modes are executed by monitoring the operation state of the operation unit 42.

Various means for referring to the inspection information of the bathroom air conditioner 1 are further associated with the control unit 41. In the example described below as inspection information of the bathroom air conditioner 1,
(1) Airflow information of ventilation fan 9 (2) Duct length information corresponding to a straight pipe connected to ventilation fan 9 (3) Temperature and humidity information (4) Concentration information of volatile chemical substance ( VOC ) .

  This is because these inspection information can be used as reference information when investigating the cause when there is a malfunction of the bathroom air conditioner 1. For example, when the air volume of the ventilation fan 9 is decreasing, it may be possible to determine the cause by checking the members existing in the connection path of the ventilation fan 9 in addition to the ventilation fan 9 itself. It is.

  The duct length of the duct connected to the ventilation fan 9 may be different between the design time and the construction time. When ducts are constructed in a different route from the design stage, the duct length is often longer during construction than at the time of design, so that a ventilation fan 9 with sufficient ventilation capacity is used. It is because it becomes a standard of the examination material.

  It is also known that volatile organic compounds (VOC) such as formaldehyde and toluene contained in building materials and paints will increase in their contamination concentration if ventilation is not sufficient. Contamination concentration is also affected by temperature and humidity. As the temperature and humidity rise, the contamination concentration tends to increase. Therefore, the VOC concentration can also be used as an indicator of whether proper ventilation is being performed.

  Therefore, in the present invention, the inspection information can be calculated and displayed. For example, the above-described four items are displayed as inspection information. Therefore, the control unit 41 shown in FIG. 12 is provided with a load detection means 50 for the ventilation fan motor 10 in this example for calculating the air volume. The example in FIG. 12 further detects a pulse (FG pulse) from a frequency generator (FG, not shown) attached to the motor rotation shaft in order to detect the rotation speed of the ventilation fan motor 10 as the load detection means 50. The FG pulse detection unit for detecting the FG pulse is supplied to the control unit 41. The controller 41 calculates the rotational speed of the ventilation fan motor 10 from the number of FG pulses per unit time as necessary.

  In addition to the FG pulse detection unit 50, sensor outputs from the temperature sensor 51, the humidity sensor 52, and the VOC sensor 53 are collected in the control unit 41. As the VOC sensor 53, a hot-wire semiconductor sensor or the like can be used. The VOC concentration is calculated taking into account information such as temperature and humidity. For example, by displaying whether the concentration is lower or higher than the standard concentration (see FIG. 5), it can be used for adjusting the ventilation airflow.

  Selection of information calculation / display mode such as inspection information is performed by the operation unit 42 shown in FIG. In this example, the ventilation mode button 42d is also used as an information calculation / display mode button. Hereinafter, this information calculation / display mode button will be described as a ventilation / measurement mode button. The ventilation mode or the information calculation / display mode is distinguished depending on the length of time that the ventilation / measurement mode button 42d is being pressed.

  When the information calculation / display mode is selected, the display unit 42a shown in FIG. 5 is switched from the clock display to the inspection information display. Examples of inspection information display are shown in FIGS. FIG. 13 shows a first inspection information display mode, in which the air volume of the ventilation fan 9 and the duct length are displayed. The duct length corresponds to the length from the bathroom air conditioner 1 to the exhaust grille 38 installed on the outer wall. FIG. 14 shows an example in which the VOC concentration is displayed in three stages in addition to the temperature and humidity in the second inspection information display mode.

  Various calculations of the duct length described above can be considered, and an example thereof will be described with reference to FIG.

In FIG. 15, a curve La is an NQ curve and shows the relationship between the rotational speed N (rpm) and the air volume (m ³ / h). The rotation speed N is the rotation speed of the ventilation fan motor 10. This curve La is a characteristic curve when the ventilation fan motor 10 is driven at a predetermined (for example, 80%) duty (the power supply frequency is 50 Hz. The same applies hereinafter).

  A curve Lb is a PQ curve, which is a characteristic curve showing a relationship with the pressure loss P (Pa) with respect to the air volume Q of the ventilation fan 9. It is a characteristic curve when it drives with a predetermined (for example, 80%) duty.

  A curve Lc is a duct resistance loss curve, and the resistance loss of the duct changes depending on the length of the duct equivalent to a straight pipe. Here, the straight pipe equivalent length (duct length) is a length obtained by converting resistance loss such as a bent portion of the duct, a terminal portion such as a vent cap, and a gap in a fitting between living rooms into a length of the straight pipe. . Curve Lc1 is a resistance loss curve when the duct length is equivalent to 2 m, curve Lc2 is a resistance loss curve equivalent to the duct length of 5 m, curve Lc3 is a resistance loss curve equivalent to the duct length of 7 m, and curve Lc4 Is a resistance loss curve corresponding to a duct length of 10 m.

  What is actually measured is the number of FG pulses of the ventilation fan motor 10, and the rotational speed N is converted from the number of FG pulses. The air volume Q can be determined from the rotational speed N. For example, the air volume Q when the rotational speed N is Nx is Qx (100 m3 / h in this example). Further, the pressure loss P at the air volume Qx is Px, and the duct resistance loss at the pressure loss Px is a curve Lc2, so that the duct length corresponding to the straight pipe in this case is 5 m. The display example of FIG. 13 shows calculated values of the air volume and the duct length when the rotation speed N is Nx.

An example of calculation and display processing of such inspection information will be described with reference to FIG. First, a transition example of the information calculation / display mode will be described with reference to FIG. First, it is monitored whether the ventilation / measurement mode button 42d shown in FIG. 5 is operated (step 61). When the ventilation / measurement mode button 42d is operated and the pressed time is short (normal operation), it is assumed that the normal ventilation mode is selected, and the normal operation mode is changed (step 62, 62). 63). Therefore, when the same button 42d is operated again, this operation mode is canceled (steps 64, 73 ).

  On the other hand, when it is determined in step 62 that the operation time is longer than the normal operation time, for example, when it is determined that the operation is continuously performed for 2 seconds or more, for example, the mode is changed to the information calculation / display mode and immediately the ventilation fan The motor 10 is driven (step 66). When the ventilation fan 9 is already operating in the 24-hour ventilation mode, the drive instruction step 66 is not necessary.

  After a predetermined time has elapsed since the ventilation fan motor 10 was driven, that is, after a stable driving state has been reached, the calculation of the air volume and duct length of the ventilation fan 9 is performed (step 67). The calculation result is displayed on the display unit 42a (step 68). This is the first calculation / display mode.

During the calculation result display process, the operation state of the ventilation / measurement mode button 42d is monitored (step 69), and the display state of the calculation result is continued until the button 42d is operated (steps 69 and 68). However, when the ventilation / measurement mode button 42d is operated and it is determined that the operation time is normal, the operation mode is canceled and the inspection information calculation / display processing is ended (steps 70 and 73 ). . When the 24-hour ventilation mode is operating, only the inspection information calculation / display process is cancelled.

  On the other hand, when it is determined that the button operation time continues for a predetermined time or more, calculation / display processing (temperature / humidity VOC calculation / display processing) other than the air volume and duct length calculation processing is executed ( Step 71). VOC concentration information calculated based on the detected temperature T from the temperature sensor 51, the detected humidity H from the humidity sensor 52, and the sensor output from the VOC sensor 53 is displayed on the display unit 42a. This display mode is the second calculation / display mode.

Since the operation state of the ventilation / measurement mode button 42d is monitored even during the calculation result display process (step 72), the calculation result display state is continued until the button 42d is operated (steps 72 and 71). ). However, when the ventilation / measurement mode button 42d is operated and it is determined that the operation time is normal, the operation mode is canceled and the inspection information calculation / display processing is terminated (steps 72, 73 ). . When the 24-hour ventilation mode is operating, only the inspection information calculation / display process is cancelled.

  As described above, the normal ventilation mode or the inspection information calculation / display processing mode is selected based on the difference in operation with respect to the ventilation / measurement mode button 42d.

  FIG. 17 is a flowchart showing an example of duct length calculation processing. In this example, the FG pulses are counted, and the rotational speed N of the ventilation fan 9 (the rotational speed of the ventilation fan motor 10) is calculated from the value (steps 81 and 82). Next, the air volume Q of the ventilation fan 9 is calculated from the rotational speed N with reference to the first data table in which the information of (NQ curve) is stored. Specifically, the value of the corresponding air volume Q is read (step 83). The calculated value of the air volume Q is displayed on the display unit 42a (step 84).

  Next, the pressure loss P corresponding to the air volume Q is read with reference to the second data table in which the information of the (PQ curve) is stored (step 85). The duct resistance loss having a value is referred from the third data table (step 86). Since the third data table stores duct length data equivalent to a straight pipe related to duct resistance loss, it is possible to refer to the duct length to be obtained from the third data table. This is displayed on the display unit 42a (step 87).

  In FIG. 17, the air volume and the duct length are calculated with reference to the first to third data tables, but these can be calculated and displayed using only two data tables. In this example, the first data table storing the FG pulse and the air volume data corresponding to the FG pulse is used, and the second data table storing the data related to the FG pulse and the corresponding duct length is used. To calculate and display. An example will be described with reference to FIG.

  First, by using the counted FG pulses, the air volume is directly obtained by referring to the first data table (steps 91 and 92). The obtained air volume is displayed on the display unit 42a (step 93).

  Next, the duct length is directly obtained from the number of FG pulses counted with reference to the second data table (step 94). This duct length is displayed on the display unit 42a (step 95).

  It is also possible to calculate the air volume and the duct length directly from the counted number of FG pulses. In that case, as the data table to be referred to, a data table that can simultaneously refer to two values of the air volume and the duct length from the number of FG pulses is used.

  FIG. 19 shows an example, and the data table is referred to using the counted FG pulses. The values of air volume and duct length corresponding to the number of FG pulses are directly read (steps 101 and 102). The obtained air volume and duct length are displayed on the display unit 42a (step 103).

  In detecting the air volume of the ventilation fan 9, it is possible to use a damper 29 for preventing a reverse wind provided at the exhaust port 2b as shown in FIG. This is because, for example, the opening angle of the damper 29 may be detected by, for example, an encoder (not shown), and the air volume may be calculated from the opening angle information that is the encoder output.

  In the embodiment described above, the information display device according to the present invention is applied to a bathroom air conditioner. However, the present invention can also be applied to an air conditioner installed and used in another room.

  The present invention can be applied to a ventilator that performs indoor ventilation.

It is a figure which shows the example of installation of the bathroom air conditioner to which the inspection information calculation / display apparatus which concerns on this invention is applied. It is a disassembled perspective view of the bathroom air conditioner to which this invention is applied. It is AA sectional drawing of the bathroom air conditioner to which this invention is applied. It is BB sectional drawing of the bathroom air conditioner to which this invention is applied. It is a top view which shows an example of the operation part used for a bathroom air conditioner. It is explanatory drawing which shows the state of the bathroom air conditioner at the time of ventilation operation mode (the 1). It is explanatory drawing which shows the state of the bathroom air conditioner at the time of ventilation chamber operation mode (the 2). It is explanatory drawing which shows the state of the bathroom air conditioner at the time of heating operation mode (the 1). It is explanatory drawing which shows the state of the bathroom air conditioner at the time of heating operation mode (the 2). It is explanatory drawing which shows the state of the bathroom air conditioner at the time of dry operation mode (the 1). It is explanatory drawing which shows the state of the bathroom air conditioner at the time of dry operation mode (the 2). It is a principal part block diagram which shows an example of the control system of the bathroom air conditioner to which the inspection information calculation and display apparatus which concerns on this invention is applied. It is a figure which shows the display state of inspection information (the 1). It is a figure which shows the display state of inspection information (the 2). It is a characteristic view such as an NQ curve. It is a flowchart which shows the calculation / display processing example of the inspection information calculation / display apparatus based on this invention. It is a flowchart which shows the calculation / display process example of an air volume and duct length (the 1). It is a flowchart which shows the example of calculation / display processing of an air volume and a duct length (the 2). It is a flowchart which shows the calculation / display processing example of an air volume and a duct length (the 3).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bathroom air conditioner 2 ... Main body case 2b ... Exhaust port 2c ... Exhaust inlet port of other rooms 3 ... Ventilation unit 4 ... Circulation unit 6 ... Ventilation fan unit 9.・ Ventilation fan 10 ... Ventilation fan motor 31 ... Washroom 32 ... Bathroom 33 ... Exhaust duct connection part 34 ... Exhaust duct connection part 36 ... Exhaust duct connection part 37 ... -Exhaust duct 41 ... Control unit 42 ... Operation unit 50 ... FG pulse detection unit 51 ... Temperature sensor 52 ... Humidity sensor 53 ... VOC sensor

Claims (9)

First information detecting means for detecting first information for the ventilation means; second information calculating means for calculating second information based on the first information detected by the first information detecting means; and the second information calculating means. An information display device comprising display means for displaying second information calculated from the means ,
The information display device according to claim 1, wherein the first information is an air volume of the ventilation means, and the second information is a duct length . 2. The information display device according to claim 1, wherein an air volume of the ventilation means is displayed on the display means. 3. The information display device according to claim 1, wherein temperature, humidity and VOC concentration are displayed on the display means. The first information detecting means is an air volume detecting means,
The air volume detection means is either a load detection means of a driving motor for driving the ventilation means or a measurement means such as a wind pressure for measuring a wind pressure or a wind speed from the ventilation means. 4. The information display device according to any one of 3.   5. The information display device according to claim 4, wherein the load detection means is rotation speed detection means of the drive motor. In the first information detection means, the information display device according to any one of claims 1 to 5, characterized in that the air volume of the ventilation means is calculated on the basis of the output in terms of the rotational speed of the drive motor. 2. The information display device according to claim 1, wherein the calculation display processing of the first and second information is executed also using an operation button for selecting an operation mode. An exhaust unit that exhausts air to the outdoors, a control unit that controls the exhaust unit, and an operation unit that generates control information for the control unit,
The operation unit is provided with a display unit, and the control unit calculates the first information and the second information of the exhaust means, and displays the second information on the display unit. The ventilation apparatus according to claim 1, wherein The ventilator according to claim 8 , wherein the first information is displayed on the display unit.

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