JPH07120025A - Air conditioner - Google Patents

Abstract

PURPOSE:To provide a separate type air conditioner which can supply air at constant flow rates regardless of the length of ducts and methods of piping work, and cope with addition or deletion of air quality improving equipment and changes in sorts of equipment, or changes in connection patterns without a modification. CONSTITUTION:A fan 4 is equipped with an inverter 16, and an air supply device 1 operates the fan 4 at constant flow rates through an inverter 16 according to outputs from a differential pressure sensor 5 that outputs differential pressures between the inner pressure of the fan 4 and the atmosphere pressure. An air path consists of ducts 2 and 3 that are connected to the inlet and outlet of the air supply device 1 to form a line of optional air path. The fan 4 can be freely connected to the air flow path or replaced. A kind or two or more kinds of air quality improving equipment such as an air filter 10, a humidifier 11, etc., are provided to improve the quality of air flowing through a room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner mainly for humidifying or purifying a building, a store or an apartment house.

[0002]

2. Description of the Related Art In the air conditioner of this type, as shown in, for example, Japanese Unexamined Patent Publication No. 1-269849, a blower is used as a core to clean the air flow by the blower.
Many of them have a structure in which an air filter and a humidifier for humidifying and improving air quality are incorporated and integrated. Further, for example, as shown in Japanese Patent Application Laid-Open No. 62-175537, there is a configuration in which a blower is provided for each functional body. In a relatively large device for a building, a store, an apartment house, or the like, ducts are used to take in the air to be processed and supply the air to be processed into each room. Then, as a method for obtaining a required air volume in such an air conditioner, a technique as disclosed in, for example, Japanese Patent Laid-Open No. 5-118629 is applied.

That is, a blower system is constituted by a blower and a duct for blower, an inverter device for controlling the rotation speed of a motor of the blower, and a frequency controller. Also,
Equipped with a means for detecting the external static pressure and air volume outside the blower system, and the motor current of the blower, estimating the external static pressure and air volume based on the detected motor current, and setting the air volume and external static pressure. The rotation speed of the blower is controlled so that As a result, the required air volume of the blower can be secured without providing an air volume detection means for detecting the air volume outside.

[0004]

In the conventional air conditioner as described above, it varies depending on the length of the blower duct, the type of the air filter, the manner of piping work (the number of bends of the duct, the bending angle, the diameter of the duct), etc. It includes a problem that it cannot easily cope with the amount of air flow.

In addition, it is difficult to deal with the increase or decrease of the air processing equipment such as the air filter or the humidifier, the change of the type, the change of the connection style, etc., and the structure to be installed is large due to the concentration of weight. There is also a problem in installation in that the larger the load, the more load is applied.

The present invention has been made in order to solve the above-mentioned conventional problems, and a first object thereof is to provide an air conditioner capable of obtaining a constant air flow regardless of the length of the duct and the manner of piping work. Secondly, it is to provide an air conditioner that can directly cope with increase / decrease of air quality improving devices such as air filters and humidifiers, change in type, or change in connection mode. Third, it is to provide an air conditioner that does not cause load concentration due to the dispersion of functional equipment.

[0007]

An air conditioner of the present invention according to claim 1 for solving the above-mentioned problems detects an air blower provided with a variable speed means and a pressure difference between the internal pressure and the atmospheric pressure of the air blower. An air blower for controlling a constant air volume is constructed by the output of the differential pressure sensor and the variable speed means, and the air blow passages on the suction side and the blow out side are constructed by ducts in this air blower, and the air blow passage is formed in any form. The air quality improving device for improving the air quality of the air flow passing through the part can be freely connected or exchanged.

According to a second aspect of the present invention for solving the above-mentioned problems, an air conditioner according to the first aspect has a structure in which the air quality improving device includes a humidifier having a moisture permeable membrane, and the humidifier is provided on the outlet side. It is connected in multiple stages in series to the ventilation passage.

According to a third aspect of the present invention which solves the above-mentioned problems, an air conditioner according to the first aspect has a structure in which the air quality improving device in the means according to the first aspect includes a humidifier having a moisture permeable membrane, and the humidifier is provided on the outlet side. Multiple units are connected in parallel to the ventilation passage.

According to a fourth aspect of the present invention which solves the above-mentioned problems, the air conditioner of the present invention comprises an air filter in the air quality improving device according to the first aspect, and the air filter is on the suction side. It is connected to the ventilation passage.

According to a fifth aspect of the present invention which solves the above-mentioned problems, the air conditioner of the present invention has a constitution in which the air quality improving device in the means relating to the first aspect includes a humidifier connected to the ventilation passage on the outlet side. The humidifier is provided with a bypass that straddles the humidifier, and an air distributor that distributes the amount of air to the bypass side and the humidifier side is provided to the bypass and the flow dividing portion of the ventilation path to the humidifier.

An air conditioner according to a sixth aspect of the present invention for solving the above-mentioned problems has a structure in which the air quality improving device in the means according to the first aspect includes a humidifier connected to a ventilation path on the outlet side. The humidifier is provided with a bypass across the humidifier, and the bypass is provided with an air distributor for adjusting the amount of air to the bypass side.

In the air conditioner of the present invention according to claim 7 for solving the above-mentioned problems, the air distributor in the means according to claim 5 or 6 is provided in the humidified space in a structure capable of analog control. The output of the humidity sensor
The air quantity to the humidifier and the bypass is controlled to be distributed.

An air conditioner according to the present invention for solving the above-mentioned problems comprises an air blower provided with a variable speed means, and a differential pressure sensor for detecting and outputting a pressure difference between the internal pressure and the atmospheric pressure of the air blower. An air blower comprising a control unit for controlling a constant air volume by the output and the variable speed means is constituted, and the air blow passages of the suction side and the blow out side are constituted by ducts in this air blower, and the air blow side of the air blow passage is freely set. To connect and replace
A humidifier for humidifying the air flow passing through the part is provided, and the controller of the blower controls the blower and also monitors a water leak alarm of the humidifier.

[0015]

According to the first aspect of the present invention, in the ventilation passage, the output of the differential pressure sensor for detecting and outputting the pressure difference between the internal pressure of the blower and the atmospheric pressure and the blower controlled by the variable speed means are used. Will always ensure a constant air volume, and by connecting or exchanging one or more types of air quality improvement equipment that improves the air quality of the air flow passing through the part in any desired manner in this ventilation path. However, the capacity of each air quality improvement device is maintained and each of them can function without problems.

In the means according to claim 2, in addition to the operation according to claim 1, since the amount of air flowing through the humidifier, which is an air quality improving device, does not change at a constant air amount, the entire humidifying capacity is added and improved. become.

In the means according to claim 3, in addition to the operation according to claim 1, since the airflows flowing to the humidifiers, which are air quality improving devices, are proportioned and merged, even if the humidifiers have a small capacity. The overall humidifying capacity will be added and improved, and the degree of freedom in the location of the humidifier will increase.

In the means according to claim 4, in addition to the operation according to claim 1, the amount of air passing through the air filter is a constant amount even if the air filter, which is an air quality improving device, has multiple stages or is improved in performance. Thus, it is possible to achieve the cleaning of the air as required.

In the means according to the fifth aspect, in addition to the operation relating to the first aspect, it is possible to adjust the humidification amount by adjusting the air amount to the humidifier by the air distributor.

In the above-mentioned means according to claim 6, in addition to the operation according to claim 1, the air volume to the humidifier can be adjusted by adjusting the air volume to the bypass by the air distributor.

In the means according to claim 7, in addition to the operation according to claim 5 or 6, the amount of humidification in the humidifier is controlled in an analog manner by the output of the humidity sensor provided in the humidified space. Like

In the means according to claim 8, the output of a differential pressure sensor for detecting and outputting the pressure difference between the internal pressure of the blower and the atmospheric pressure, and the blower controlled by the variable speed means, to the air passage. A constant amount of air is always ensured, and even if a humidifier that humidifies the air flow passing through the part is connected or replaced in this ventilation path in any form, the capacity of each humidifier is maintained. , In addition to functioning without any trouble, the control of the blower and the monitoring of the water leak alarm of the distributed humidifier are performed by the control unit of the blower, which is the core
Safety will be improved.

[0023]

【Example】

Example 1. An air conditioner as an embodiment of the present invention is shown in FIG.
As shown in FIG. 3, the core air blower 1, the ducts 2 and 3 connected to the suction side and the blowout side of the air blower 1 and forming a series of air passages, and the air flow that flows through the air passages interposed in the air passages. It consists of the connection of each main functional element with the air quality improvement equipment to improve the air quality of the. The blower device 1 includes a blower 4 such as a sirocco fan, variable speed means for controlling the rotation speed of a motor of the blower 4, and a differential pressure sensor for detecting and outputting a negative pressure difference between the internal pressure of the blower 4 and the atmospheric pressure. 5 and 5. The blower 4 is controlled by the output of the differential pressure sensor 5 and the variable speed means.

The ducts 2 and 3 are connected to the suction side and the blowing side of the blower 4 and form a series of ventilation passages for taking in the air to be processed and supplying the working air in an arbitrary form.
The air to be processed is mostly taken in the room 6, and the end of the suction side duct 2 is connected to the room 6 through the suction grill 7. Further, the supply place of the processing air is mostly in the same room 6, and the end of the duct 3 on the outlet side is connected to the room by the outlet grill 9 via the silencer 8.

The air quality improving device is a general term for the air filter 10 for cleaning the air, the humidifier 11 for humidifying the air, and the like.
It is an air conditioning functional device that is incorporated in a part of the ventilation passage and performs air quality improvement processing on the air to be processed flowing through the portion. The air filter 10 is replaceably connected to the ventilation passage on the suction side of the blower 4. ing. The humidifier 11 is configured to supply water to the moisture permeable membrane and humidify it by passing an air flow through the outer surface of the moisture permeable membrane wound in a roll shape, and is connected to the ventilation passage on the upstream side of the silencer 8 so as to be ventilated and exchangeable.

The differential pressure sensor 5 provided in the blower 1 is
In the basic configuration as shown in FIG. 2, the pressure introduction unit 12 receives the internal pressure and the atmospheric pressure of the motor / blade portion of the blower 4 at the pressure sensing unit 13, respectively, and the negative pressure difference between the atmospheric pressure and the internal pressure is obtained. It has a characteristic as shown in FIG. 3 which detects and outputs a DC output voltage proportional to this pressure difference. The output of the differential pressure sensor 5 is input to the sensor correction circuit 14 of the variable speed means.

As shown in FIG. 4, the variable speed means comprises a sensor correction circuit 14, an operation command circuit 15 which is a control section, and an inverter 16. The output of the differential pressure sensor 5 input to the sensor correction circuit 14 is , The change in the characteristic due to the temperature and the element with the passage of time is corrected, the corrected output is corrected to the true output, and the corrected output is input to the operation command circuit 15. Set value 1 in the operation command circuit 15
7, that is, the target value that is the target of control is input, and the inverter 16 is driven so that the output from the differential pressure sensor 5 becomes the set value 17.

As shown in FIG. 5, the air volume-pressure characteristics at the outlet of the blower 4 are as follows when the output of the blower 4 is controlled.
The characteristic curve changes like a, b, c and d. Assuming that the blower 4 is rotating at point A in FIG. 5 (the characteristic curve b is in the medium pressure load), the air volume at that time is QA, and the negative pressure difference Δ-P between the atmospheric pressure and the internal pressure is It is α as shown in FIG. If the pressure load shifts to a large state in this state, the air volume decreases, and the pressure difference Δ-P shifts to, for example, β in FIG. Further, if the pressure load shifts to a small state, the air volume increases and the pressure difference Δ-P also shifts.
That is, the set value 17 input to the operation command circuit 15 is, for example, the pressure difference Δ-P at the α point, which becomes the target value of the hood back control, so that the output of the differential pressure sensor 5 matches the target value. In addition, the blower 4 is controlled at a variable speed by the inverter 16. Therefore, the air volume of the air blower 1 is a constant air volume regardless of the fluctuation of the pressure load.

FIG. 6 is a circuit diagram showing an example in which the block diagram shown in FIG. 4 is configured as a concrete electronic circuit, and the differential pressure sensor 5 is shown as a variable output voltage source. In this circuit, the output of the differential pressure sensor 5 is amplified by the amplifier 18 and input to the analog input port AP1 of the microcomputer 19. The set value 17 is the voltage dividing resistance 2
It is formed as a voltage signal by 0 and 21, and is input to the analog input port AP2 of the microcomputer 19.
The microcomputer 19 corrects the output of the differential pressure sensor 5, processes it programmatically as an operation command, and outputs the operation command output to the operation command circuit 15 which is the control unit of the inverter 16.
Will be output to. The operation command circuit 15 drives the inverter 16 to control the rotation of the motor of the blower 4.

The variable speed means is an inverter 16
In addition to the above, a phase control method incorporating the primary voltage control of the blower 4, a method using an auto transformer, a chopper method, etc.
Various control methods can be applied.

In the air conditioner having the above structure, the functional elements of the air blower 1, the air filter 10, the humidifier 11, and the ducts 2 and 3 are all individual structures, and by connecting them to each other properly It becomes a functional state. Blower 1
Operates so as to always secure the set air volume as described above, and the constant air volume is maintained even if the air filter 10 or the humidifier 11 is replaced with another type, or one of them is removed, The air quality improvement process is performed with the air volume. Therefore, there is no change in the air volume due to the pressure loss of the ventilation system that changes depending on the length of the ducts 2 and 3 and the manner of piping work (the number of bends of the duct, the bending angle, the diameter of the duct), etc., and the air filter 10 and the humidifier 11 It is possible to directly deal with the increase or decrease of the air quality improving equipment such as the above, the change of the type, or the change of the connection style. The layout of each functional element can be freely set, and the functional elements are distributed, so that even if the size is increased, a large load is not concentrated on the structure to be installed, and the installation work is simplified.

Example 2. FIG. 7 is a configuration diagram showing a configuration of an air conditioner as another embodiment of the present invention. This embodiment relates to the connection mode of the humidifier, and basically has almost the same structure and function as those shown in the first embodiment. Therefore, the same components and functions as those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

As shown in FIG. 7, the air conditioner of this embodiment is the same as that of the first embodiment except that the humidifier 11 is replaced with the first humidifier 1.
The first humidifier 11 has a configuration in which the second humidifier 11a is connected in series via the duct 3 in front of the first humidifier 11.
The humidifiers 11 and 11a themselves carry the moisture on the surface of the moisture permeable membrane and convey the moisture into the room 6, and if the amount of passing air decreases, the amount of humidification also decreases accordingly. If the humidifiers 11 and 11a are connected in series and in multiple stages, the air volume will normally decrease by the amount of the pressure loss, and the humidification amount will decrease without increasing. However, in this embodiment, the air blower 1 is The second humidifier 11 to maintain a constant air flow
The air flow humidified in a is further humidified by the first humidifier 11 in the next stage, and the air flow blown from the blow-out grill 9 to the room 6 has a large amount of humidification. Will be things. The other functions are the same as those of the first embodiment.

The final increase in the amount of humidification can also be realized by connecting a plurality of humidifiers 11b and 11c in parallel and in multiple stages by the duct 3 as shown in FIG. In this case, the constant air volume from the air blower 1 is equal to the humidifiers 11b, 11
The humidification amount of each of the humidifiers 11b and 11c is small, but the sum of the humidification amounts of the respective humidifiers 11b and 11c is the final humidification amount. Therefore, each of the small-sized humidifiers 11b and 11c is an air conditioner in which a sufficient amount of humidification can be obtained, and the degree of freedom in installing the humidifiers 11b and 11c is increased.

Example 3. FIG. 9 is a configuration diagram showing a configuration of an air conditioner as another embodiment of the present invention. This embodiment relates to an air conditioner whose main function is to clean the air, and the basic configuration of the air blower and the like is the same as that shown in the first embodiment. Therefore, the same components and functions as those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

As shown in FIG. 9, the air conditioner of this embodiment is the same as that of the first embodiment except that the humidifier 11 is removed (the humidifier 11 may be connected), and the intake side ventilation passage is provided. An air filter 10 is replaceably connected. This air filter 10 includes a coarse dust filter 10a and a high performance filter 1
A combination of 0b, a deodorizing filter 10c added, and the like having various functions according to the purpose of purification. Even if any of the air filters 10 is connected, the air volume of the blower device 1 is maintained at a constant air volume, and no problem occurs. Of course, the air filters 10 may be connected in parallel or in multiple stages in series, and can be freely connected depending on the characteristics of the installation site and the purpose of purification. Even if the pressure loss increases due to clogging of the air filter 10, the air volume is maintained at a constant air volume, and the air purification function is maintained. Therefore,
If an air filter for deodorization and an air filter for removing dust are installed in parallel and each ventilation path is switched by an interlock type damper, etc., an air conditioner with two functions for air purification is also configured. can do.

Incidentally, in the air conditioner whose main function is to clean the air as in this example, when the indoor air is operated at a constant air flow rate while the pollution level is low, noise is large and energy loss is large. In such a case, for example, a miscellaneous gas sensor 22 or the like as shown by a chain line in FIG. 9 that detects contamination of indoor air and generates a linear output signal according to the degree of contamination is input to the operation command circuit 15. It may be configured as follows. That is, the blower 4 is controlled by driving the inverter 16 according to the degree of pollution of indoor air. This allows
When the pollution level is low, the operation can be performed with a low air flow rate, and when the pollution level is high, the operation can be performed with a high air flow rate, and noise and energy loss can be reduced.

Example 4. FIG. 10 is a configuration diagram showing a configuration of an air conditioner as another embodiment of the present invention. This embodiment relates to an air conditioner capable of adjusting the amount of humidification, and its basic configuration is almost the same as that shown in the first embodiment. Therefore, the same components and functions as those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

As shown in FIG. 10, the air conditioner of this embodiment is the same as the humidifier 11 of the first embodiment except that the humidifier 1 is
A bypass 23 that straddles 1 is configured. Bypass 23
An air distributor 24, whose opening degree is controlled in an on / off or analog manner, is provided at a branch portion of the ventilation path to the humidifier 11 side. The air distributor 24 is controlled according to the output of a humidity sensor 25 that is provided in the room 6 and that generates a linear output according to the humidity.

That is, with the output of the humidity sensor 25 when the humidity in the room 6 is high, the air distributor 24 is driven so as to increase the flow rate to the bypass 23 in accordance with the humidity.
When the humidity in the room 6 is low, the flow rate to the bypass 23 is reduced according to the low humidity. Therefore, the air volume to the humidifier 11 is reduced and increased according to the humidity, and is adjusted to the humidification amount according to the indoor humidity. Bypass 23
Joins the humidifier 11 side on the downstream side of the humidifier 11,
The air blown out from the blowout grill 9 is blown out vigorously regardless of the adjustment of the humidifying ability. In other words, if the amount of air is simply reduced on the inlet side to the humidifier 11 and the amount of humidification is adjusted, the air blown from the blow-out grill 9 loses momentum when the amount of humidification is reduced, and the distribution of humidified air in the room 6 becomes uneven. The entire room often does not have a humid atmosphere,
By adjusting the flow rate to the bypass 23, such a disadvantage does not occur and a comfortable humid environment can be obtained.

Even if the air distributor 24 is provided not at the branch portion but at the inlet side portion of the bypass 23 as shown in FIG. 11, the same function as that of the above-described embodiment can be obtained.

Example 5. FIG. 12 is a partial configuration diagram showing a part of the configuration of an air conditioner as another embodiment of the present invention. This embodiment relates to an air conditioner capable of adjusting the amount of humidification similarly to the fourth embodiment, and its basic configuration is almost the same as that shown in the first embodiment. Therefore, the same components and functions as those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

As shown in FIG. 12, the air conditioner of this embodiment is the same as the humidifier 11 of the first embodiment except that the humidifier 1
A bypass 23 that straddles 1 is configured. Bypass 23
In addition, each of the inlet portions of the ventilation passage to the humidifier 11 side is shown in FIG.
An analog damper 26 having the configuration shown in is provided.

Each of the analog dampers 26 is connected to a motor 28 attached to a cylindrical body 27 forming an outer shell as shown in FIG.
The cylindrical body 2 can be rotated by a rotary shaft in a direction perpendicular to the center line of
7 and a damper 29 incorporated in the inside. Damper 2
A position display board 30 having rotational positions represented by slits as shown in FIG. 14 is attached to the outside of the rotation shaft of the motor 9 opposite to the motor. A rotational position sensor 33 in which a light emitting side 31 and a light receiving side 32 are arranged so as to sandwich the position display panel 30.
Is provided. The rotational position information of the damper 29 obtained by the rotational position sensor 33 via the position display board 30 is sent to the control circuit 34 provided outside the cylindrical body 27, and the damper 29 is position-controlled in an analog manner. Each analog damper 26 is analogically controlled according to the output of a humidity sensor 25 that is provided in the room 6 and that generates a linear output according to the humidity. As a result, it is possible to adjust the humidification amount more finely as described in the fourth embodiment. The other functions are the same as those in the first embodiment.

Example 6. FIG. 15 is a configuration diagram showing a configuration of an air conditioner as another embodiment of the present invention. This embodiment relates to an alarm device for a humidifier, and basically has almost the same structure and function as those shown in the first embodiment. Therefore, the same components and functions as those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

As shown in FIG. 15, the humidifier 11 is provided with a water supply system for supplying water to the moisture permeable membrane. The water supply system supplies water from a water supply or a tank to the moisture permeable membrane, and water supply is controlled by an electromagnetic valve 35. Further, a water tray 36 is provided below the moisture permeable membrane, and an electrode 37 that is turned on when water reaches a certain level is attached. This electrode 37 is shown in FIG.
It is connected to the alarm circuit shown in FIG. The alarm circuit has a comparison input voltage generated by voltage division by resistors 38 and 39,
The comparator 40 is mainly configured to compare the detected output voltage obtained by converting the current flowing through the electrode 37 into a voltage. The comparator 40 is turned on when the detection output voltage exceeds the comparison input voltage, and becomes a low output state. An alarm 41 and a transistor 42 for driving the solenoid valve 35 are provided in parallel with the alarm 41 on the output side of the comparator 40. The output side of the comparator 40 is also connected to the control unit (operation command circuit 15) of the inverter 16 and the alarm information is input to the control unit of the blower 1.

In the above structure, when water leaks from the moisture permeable membrane, the leaked water is stored in the water tray 36. When water is collected in the water receiving tray 36 to the extent that electricity can be supplied between the electrode 37 and the water receiving tray 36, the comparator 40 is turned on and the alarm 41 is turned on. As a result, the transistor 42 is turned off, the electromagnetic valve 35 is closed, and the water supply to the humidifier 11 is stopped. The alarm information is also input to the control unit of the inverter 16, and the control unit of the inverter 16 stops the blower device 1 and stops the function of the entire air conditioner. This allows
Even if it is installed in the space above the ceiling, it is possible not only to avoid the problem that the ceiling leaks due to water leaks without noticing it, but also to prevent water leakage of the humidifiers 11 that are distributed and installed. The control unit of the blower 1 can constantly monitor and improve safety.

[0048]

As is apparent from the above description of the embodiment, according to the invention of claim 1, the output of the differential pressure sensor for detecting and outputting the pressure difference between the internal pressure of the blower and the atmospheric pressure and the variable speed means. A constant amount of air is always ensured in the ventilation passage by the air blower controlled by, and one type or multiple types for improving the air quality of the air flow passing through the portion in any shape in the ventilation passage. Even if various types of air quality improving devices are connected or replaced, the capability of each air quality improving device is maintained and each air quality improving device functions without any hindrance. Therefore, a constant air volume can be obtained regardless of the length of the duct or the method of piping work, and it is possible to deal with the increase / decrease of air quality improvement equipment, change of type, change of connection style, etc. as well as dispersion of functional equipment. As a result, the load is not concentrated and the installation work is simple and the installation flexibility is increased.

According to the invention of claim 2, in addition to the effect of claim 1, the amount of air flowing through the humidifier, which is an air quality improving device, does not fluctuate at a constant air amount, so that the overall humidifying ability is improved.

According to the invention of claim 3, in addition to the effect according to claim 1, since the amount of air flowing to each humidifier which is an air quality improving device is proportioned and merged, even if the capacity of each humidifier is small. The overall humidifying capacity will be added and improved, and the degree of freedom in the location of the humidifier will increase.

According to the invention of claim 4, in addition to the effect according to claim 1, even if the air filter, which is an air quality improving device, has multiple stages or is improved in performance, the amount of air passing through the air filter is constant. Thus, it is possible to achieve the cleaning of the air as required.

According to the invention of claim 5, in addition to the effect according to claim 1, the amount of humidification can be adjusted by adjusting the amount of air to the humidifier by the air distributor, and the flow from the bypass is also provided. Since they merge, the force of the blown air does not decrease and a humid environment with a good distribution can be obtained.

According to the invention of claim 6, in addition to the effect according to claim 1, the amount of air to the humidifier can be adjusted by adjusting the amount of air to the bypass by the air distributor, and the amount of humidification can be adjusted. Can be performed without reducing the force of the blown air, and a humidified environment with a good distribution can be obtained.

According to the invention of claim 7, in addition to the effect according to claim 5 or 6, the amount of humidification in the humidifier is controlled in an analog manner by the output of the humidity sensor provided in the humidified space, A more comfortable and appropriate humidified environment can be obtained.

According to the invention of claim 8, a constant air flow can be obtained irrespective of the length of the duct and the method of piping work, and it is possible to directly cope with the increase or decrease of the air quality improving equipment, the change of the type, or the change of the connection style. Not only is the function equipment distributed, but the load is not concentrated due to the distribution of functional equipment, which not only simplifies the installation work and increases the degree of freedom in installation, but also enables control of the blower and monitoring of water leak alarms of the distributed humidifiers. Since it is performed by the control unit of the blower, which is the core of the system, safety is improved and maintenance is easy.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a configuration of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the configuration of the differential pressure sensor according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an output characteristic of the differential pressure sensor according to the embodiment of the present invention.

FIG. 4 is a block configuration diagram showing a configuration of a control system according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a control method of the control system according to the embodiment of the present invention.

FIG. 6 is an electric circuit diagram showing a specific configuration example of the control system of the embodiment of the present invention.

FIG. 7 is a configuration diagram showing a configuration of an air conditioner according to another embodiment of the present invention.

FIG. 8 is a partial configuration diagram showing a configuration of an air conditioner according to another embodiment of the present invention.

FIG. 9 is a configuration diagram showing a configuration of an air conditioner according to another embodiment of the present invention.

FIG. 10 is a configuration diagram showing a configuration of an air conditioner according to another embodiment of the present invention.

FIG. 11 is a partial configuration diagram showing a configuration of an air conditioner according to another embodiment of the present invention.

FIG. 12 is a partial configuration diagram showing a configuration of an air conditioner according to another embodiment of the present invention.

FIG. 13 is a cross-sectional view showing a configuration of an analog damper in an air conditioner of another embodiment of the present invention.

FIG. 14 is a front view of the position display board in the embodiment of the present invention.

FIG. 15 is a configuration diagram showing a configuration of an air conditioner according to another embodiment of the present invention.

16 is an electric circuit diagram showing a configuration of an alarm circuit in FIG.

[Explanation of symbols]

 1 Blower 2 Duct 3 Duct 4 Blower 5 Differential pressure sensor 10 Air filter 11 Humidifier 11a Humidifier 11b Humidifier 11c Humidifier 15 Operation command circuit 16 Inverter 23 Bypass 24 Air distributor 25 Humidity sensor 26 Analog damper 35 Solenoid valve 37 Electrode 40 Comparator 41 Alarm

Claims (8)

[Claims] 1. An air blower for controlling a blower equipped with a variable speed means to a constant air volume by an output of a differential pressure sensor for detecting and outputting a pressure difference between an internal pressure and an atmospheric pressure of the blower and the variable speed means. And an air passage connected to the suction side and the air outlet side of the air blower and formed by a duct capable of forming a series of air passages in any form, and configured to be freely connectable to and replaceable with the air passage, An air conditioner comprising one or more types of air quality improving equipment for improving the air quality of an air flow passing through the part. 2. The air conditioner according to claim 1, wherein the air quality improving device includes a humidifier with a moisture permeable membrane, and the humidifier is connected in multiple stages in series to the ventilation passage on the outlet side. 3. The air conditioner according to claim 1, wherein the air quality improving device includes a humidifier with a moisture permeable membrane, and the humidifier is connected in parallel to a plurality of ventilation paths on the outlet side. 4. The air conditioner according to claim 1, wherein the air quality improving device includes an air filter, and the air filter is connected to a ventilation path on the suction side. 5. The air quality improving device includes a humidifier connected to a ventilation path on the outlet side, and a bypass that straddles the humidifier is provided in the humidifier, and a bypass portion of the ventilation path to the bypass and the humidifier is provided. The air conditioner according to claim 1, wherein an air distributor that distributes the amount of air to the bypass side and the humidifier side is provided. 6. The air quality improvement device includes a humidifier connected to a ventilation path on the outlet side, the humidifier is provided with a bypass across the humidifier, and the bypass adjusts the amount of air to the bypass side. The air conditioner according to claim 1, wherein the air conditioner has a distributor. 7. The air distributor according to claim 5, wherein the air distributor has a structure capable of analog control, and the distribution of the air amount to the humidifier and the bypass is controlled by the output of a humidity sensor provided in the humidified space. The air conditioner according to claim 6. 8. A control unit for controlling a blower equipped with a variable speed means to a constant air volume by the output of a differential pressure sensor for detecting and outputting a pressure difference between the internal pressure of the blower and the atmospheric pressure and the variable speed means. An air blower having, a ventilation path connected to the suction side and the blowing side of the air blower and formed by a duct capable of forming a series of air paths in an arbitrary form, and freely connected to the blowing side of the ventilation path and Configured to be interchangeable,
An air conditioner having a humidifier for humidifying an air flow passing through the unit, and the controller of the air blower monitors water leakage of the humidifier.