JP2018031516A - Air cleaning ventilation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide air cleaning ventilation equipment capable of preventing a proportion of air which is taken indoors without being cleaned, from increasing even when an indoor negative pressure is large.SOLUTION: Air cleaning ventilation equipment 101 installed in a building includes: a blower 1 provided with an air inlet 1d which takes in air from an external part of the building; a dust removing deodorizer 2 which cleans air sent out from the blower 1 to make clean air 4; a blow-out port 1f which supplies clean air 4 to an inner part of the building; an indoor outer pressure sensor 6 which detects intensity of a negative pressure on an inner part of the building; and a control unit 5 which controls an operation strength of the blower 1 based on a measurement result of the indoor outer pressure sensor 6. Therein, the control unit 5 intensifies the operation intensity of the blower 1 as the negative pressure on an inner part of the building becomes large.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an air purification ventilation apparatus installed in a building.

  In recent years, due to an increase in the airtightness of buildings, dust, odor, and carbon dioxide generated indoors are likely to stay indoors.

  When ventilating to replace indoor air and outdoor air to treat dust, odors and carbon dioxide generated indoors, the outdoor air is taken indoors after removing particulate matter, odor-causing substances and germs. It is hoped that. In particular, there is an increasing demand for removing pollen which is a microparticulate substance having a diameter of 2.5 μm or less, called PM (Particulate Matter) 2.5, and allergen substance. Hereinafter, removing particulate matter, odor-causing substances and germs from the air is referred to as “cleaning the air”. The purified air is called “clean air”.

  Patent Document 1 discloses an air purifier that cleans air by providing a filter at an air supply port that takes air indoors.

JP2013-210162A

  However, in the air cleaner disclosed in Patent Document 1, when a ventilation fan installed indoors operates and the indoor negative pressure becomes strong, the outdoor air taken into the indoor space from the gap of the building without passing through the air supply port. Increasing and increasing the proportion of air taken indoors without being cleaned. In addition, that an indoor negative pressure becomes strong is that the absolute value of the result of having subtracted the outdoor atmospheric | air pressure from the indoor atmospheric | air pressure becomes large. Therefore, a state where the indoor negative pressure is strong means that the value of the atmospheric pressure difference between the indoor atmospheric pressure and the outdoor atmospheric pressure itself is a small value.

  The present invention has been made in view of the above, and it is an object of the present invention to provide an air purifying and ventilating apparatus that can suppress an increase in the proportion of air taken into a room without being cleaned even when the indoor negative pressure is strong. And

  In order to solve the above-described problems and achieve the object, the present invention is an air purifying and ventilating apparatus installed in a building, and is provided with a first air intake port that takes in air from outside the building. A deodorizing and deodorizing device that purifies the air sent from the blower to clean air, a blow-off port that supplies clean air to the inside of the building, and negative pressure intensity measuring means that detects the strength of the negative pressure inside the building And a control unit that controls the operating strength of the blower based on the measurement result of the negative pressure strength measuring means. The controller increases the operating strength of the blower as the negative pressure inside the building increases.

  According to the present invention, even when the indoor negative pressure is strong, there is an effect that it is possible to suppress an increase in the proportion of air that is taken in indoors without being cleaned.

Functional block diagram of the air cleaning ventilator according to the first embodiment Schematic diagram of the air cleaning ventilator according to Embodiment 1. The flowchart which shows the flow of operation | movement of the air purifying ventilation apparatus which concerns on Embodiment 1. FIG. Functional block diagram of an air cleaning ventilator according to the second embodiment Schematic diagram of an air cleaning ventilator according to Embodiment 2. The flowchart which shows the flow of operation | movement of the air purifying ventilation apparatus which concerns on Embodiment 2. FIG. Functional block diagram of an air cleaning ventilator according to Embodiment 3. Schematic diagram of an air cleaning ventilator according to Embodiment 3. Schematic diagram of an air cleaning ventilator according to Embodiment 3. The flowchart which shows the flow of operation | movement of the air purification ventilation apparatus which concerns on Embodiment 3. FIG. The figure which shows the structure which implement | achieved the function of the control part of the air purifying ventilation apparatus which concerns on Embodiment 1, Embodiment 2, or Embodiment 3 with hardware. The figure which shows the structure which implement | achieved the function of the control part of the air purifying ventilation apparatus which concerns on Embodiment 1, Embodiment 2, or Embodiment 3 with software.

  Hereinafter, an air cleaning ventilator according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a functional block diagram of the air purification ventilation apparatus according to Embodiment 1 of the present invention. FIG. 2 is a schematic diagram of the air cleaning ventilator according to the first embodiment. The air purifying and ventilating apparatus 101 according to Embodiment 1 includes a blower 1 including an air supply port 1d that is a first air intake port that takes in outdoor air 3 from the outside of the building, and air sent from the blower 1. Operation of the blower 1 based on the measurement results of the dust removal and deodorization device 2 to be purified to clean air 4, the indoor / outdoor pressure sensor 6 for detecting the pressure difference between the inside of the building and the outside of the building, and the indoor / outdoor pressure sensor 6 And a control unit 5 for controlling the strength. The air cleaning ventilator 101 is installed in a building. Examples of the building include, but are not limited to, general homes, business offices, stores, and factories. The indoor / outdoor pressure sensor 6 is a negative pressure strength measuring unit that detects the strength of the negative pressure inside the building. By measuring the pressure inside the building and the pressure outside the building, the negative pressure inside the building is measured. The intensity of can be detected indirectly. In the following description, the inside of the building is called indoor, and the outside of the building is called outdoor.

  The blower 1 has a structure in which a fan 1c is attached to a shaft 1b of a motor 1a. The higher the rotational speed of the motor 1a, the faster the fan 1c rotates and the stronger the operating strength. The blower 1 is provided with an air supply port 1d for taking in air from the outdoors and an air outlet 1f for supplying clean air 4 indoors. When the operating strength of the blower 1 is increased, the air volume of the outdoor air 3 taken into the blower 1 through the air supply port 1d increases, and the air volume of the clean air 4 supplied from the dust removing device 2 through the air outlet 1f to the indoors is also increased. Increase.

  As the dust removal and deodorization apparatus 2, a combination of a plasma generation apparatus that decomposes particulate matter and germs with plasma and an activated carbon filter that adsorbs and removes odor-causing substances can be applied, but HEPA can be used instead of the plasma generation apparatus. A (High Efficiency Particulate Air) filter can also be used.

  Operation | movement of the air purifying ventilation apparatus 101 which concerns on Embodiment 1 is demonstrated. In the following description, it is assumed that the operating intensity of the blower 1 is in two stages, weak and strong. The threshold negative pressure P0 is set and held in advance in the control unit 5.

  FIG. 3 is a flowchart showing a flow of operation of the air cleaning ventilator according to the first embodiment. In step S101, the control unit 5 operates the blower 1 with a weak operation strength. In step S102, the control unit 5 receives the measurement result from the indoor / outdoor pressure sensor 6, and determines whether the indoor negative pressure P is higher than the threshold negative pressure P0. The indoor negative pressure P being stronger than the threshold negative pressure P0 means that the absolute value of the indoor negative pressure P is larger than the absolute value of the threshold negative pressure P0, and the value of the indoor negative pressure P is the threshold negative pressure. It means that the state is smaller than the value of P0.

  If the indoor negative pressure P is higher than the threshold negative pressure P0, the result is Yes in step S102, and in step S103, the control unit 5 operates the blower 1 with a high operating intensity. On the other hand, if the indoor negative pressure P is the same as the threshold negative pressure P0 or is weaker than the threshold negative pressure P0, the result in Step S102 is No, and the process proceeds to Step S101. The blower 1 is operated, and the operation of the blower 1 is continued at a weak driving strength.

  After step S103, in step S104, the control unit 5 receives the measurement result from the indoor / outdoor pressure sensor 6, and determines whether the indoor negative pressure P is weaker than the threshold negative pressure P0. The indoor negative pressure P being weaker than the threshold negative pressure P0 means that the absolute value of the indoor negative pressure P is smaller than the absolute value of the threshold negative pressure P0, and the value of the indoor negative pressure is the threshold negative pressure P0. Means a larger state.

  When indoor negative pressure P is weaker than threshold negative pressure P0, it becomes Yes in step S104, and in step S101, the control unit 5 operates the blower 1 with weak operating strength. On the other hand, when the indoor negative pressure P is the same as the threshold negative pressure P0 or higher than the threshold negative pressure P0, No is made in step S104, the process proceeds to step S103, and the control unit 5 performs the blower with a high operating strength. 1 is operated, and the operation of the blower 1 at a high operating intensity is continued.

  In the determination process of step S102 described above, the case where the indoor negative pressure P and the threshold negative pressure P0 are equal is determined as “No”, but may be determined as “Yes”. That is, the case where the indoor negative pressure P and the threshold negative pressure P0 are equal may be determined as “Yes” or “No”.

  Further, in the determination process of step S104 described above, the case where the indoor negative pressure P and the threshold negative pressure P0 are equal is determined as “No”, but may be determined as “Yes”. That is, the case where the indoor negative pressure P and the threshold negative pressure P0 are equal may be determined as “Yes” or “No”.

  In the above description, the operating intensity of the blower 1 has two levels of weak and strong. However, if the operating intensity of the fan 1 has three levels of weak, medium and strong, the threshold negative pressure is added to the threshold negative pressure P0. If the negative pressure P1 is set to be higher than the threshold negative pressure P0, and the indoor negative pressure P is the same as or lower than the threshold negative pressure P0, the blower 1 is operated at a weaker operating intensity. When P is stronger than the threshold negative pressure P0 and equal to or lower than the threshold negative pressure P1, the blower 1 is operated at the medium operating strength, and the indoor negative pressure P is stronger than the threshold negative pressure P1. In such a case, the blower 1 may be operated with a strong operation intensity. By further increasing the set number of threshold negative pressures, it is possible for the control unit 5 to determine the operation strength from among four or more operation strengths of the blower 1. In addition, you may make it change the driving | running intensity | strength of the air blower 1 steplessly so that the operating intensity | strength of the air blower 1 may become so strong that the indoor negative pressure P is strong.

  The air purifying and ventilating apparatus 101 according to Embodiment 1 increases the operating strength of the blower 1 when the indoor negative pressure P is higher than the threshold negative pressure P0, and passes through the dust removal deodorizing apparatus 2 to be supplied indoors. The amount of air 4 can be increased. That is, the air purifying and ventilating apparatus 101 according to Embodiment 1 can prevent an increase in the proportion of the outdoor air 3 that enters the room without being cleaned from the gaps in the building. Therefore, the air purifying / ventilating apparatus 101 according to Embodiment 1 can suppress the intake of particulate matter, odor-causing substances, and germs indoors.

Embodiment 2. FIG.
FIG. 4 is a functional block diagram of the air purification ventilation apparatus according to Embodiment 2 of the present invention. FIG. 5 is a schematic diagram of an air cleaning ventilator according to the second embodiment. The air purifying and ventilating apparatus 102 according to the second embodiment includes the receiving apparatus 7 that receives the operation state information from the ventilation fan 200 that is separately installed in the building, and does not include the indoor / outdoor pressure sensor. Different from the clean ventilation device 101. The controller 52 controls the operating strength of the blower 1 based on the operating state information. The blower 1 and the dust removal deodorizing device 2 are the same as those in the first embodiment.

  Operation | movement of the air purifying ventilation apparatus 102 which concerns on Embodiment 2 is demonstrated. In the following description, it is assumed that the operating intensity of the blower 1 is three levels of weak, medium and strong. In addition, it is assumed that the operation intensity of the ventilation fan 200 separately installed in the building has three levels of weak, medium, and strong.

  FIG. 6 is a flowchart showing a flow of operations of the air cleaning ventilator according to the second embodiment. In step S201, the control unit 52 operates the blower 1 with a weak operation strength. In step S202, the control unit 52 acquires the operation state information of the ventilation fan 200 separately installed in the building by the receiving device 7, and the operation intensity of the ventilation fan 200 separately installed in the building is weak, medium, or strong. Determine whether. If the control unit 52 determines that the operation intensity of the ventilation fan 200 separately installed in the building is weak, the control unit 52 becomes weak in step S202. Proceeding to step S201, the control unit 52 continues the operation of the blower 1 with a weak operation intensity. If the control unit 52 determines that the operation intensity of the ventilation fan 200 separately installed in the building is medium, it becomes medium in step S202. In step S <b> 203, the control unit 52 operates the blower 1 with the medium operation strength. If the control unit 52 determines that the operation intensity of the ventilation fan 200 separately installed in the building is strong, it becomes strong in step S202. In step S204, the control unit 52 operates the blower 1 with a strong operation strength. After step S201, S203 or S204, the process proceeds to step S202.

  Ventilation fans with large ventilation airflow, such as for bathrooms or kitchens, tend to generate negative pressure indoors during operation. The air cleaning ventilator 102 according to Embodiment 2 increases the operating strength of the blower 1 as the operating strength of the ventilation fan 200 separately installed in the building increases, and is supplied indoors through the dust removal deodorizing device 2. The amount of clean air 4 can be increased. Therefore, the air purification ventilation apparatus 102 which concerns on Embodiment 2 can prevent the ratio of the outdoor air 3 which penetrate | invades indoors, without being purified from the clearance gap of a building increasing.

Embodiment 3 FIG.
FIG. 7 is a functional block diagram of the air purification ventilation apparatus according to Embodiment 3 of the present invention. 8 and 9 are schematic views of the air cleaning ventilator according to the third embodiment. The air purifying and ventilating apparatus 103 according to Embodiment 3 is taken into the blower 1 through the point that the blower 1 includes a return air port 1e that is a second air intake port that takes in air from the inside, and the air supply port 1d. It differs from the air purifying and ventilating apparatus 102 according to the second embodiment in that an air volume adjusting damper 8 that changes the ratio of the circulating air 9 taken into the blower 1 through the outdoor air 3 and the return air port 1e is provided. The circulating air 9 is air that is taken into the blower 1 and then circulated indoors after being blown out from the outlet 1f. The air volume adjusting damper 8 has a circulation priority position where the air passage on the air supply port 1d side is narrow and the air passage on the return air port 1e side is wide, and the air passage on the air supply port 1d side is wide and the wind on the return air port 1e side. The road is arranged at one of the narrow air supply priority positions. The control unit 53 controls the operation intensity of the blower 1 based on the operation state information and moves the air volume adjustment damper 8 to the air supply priority position or the circulation priority position. The blower 1 and the dust removal deodorizing device 2 are the same as those in the first embodiment.

  FIG. 8 shows a state in which the air volume adjustment damper 8 is arranged at the circulation priority position, and FIG. 9 shows a state in which the air volume adjustment damper 8 is arranged at the air supply priority position. When the air volume adjustment damper 8 is disposed at the air supply priority position, the proportion of the outdoor air 3 occupied in the air taken in by the blower 1 is higher than when the air volume adjustment damper 8 is disposed at the circulation priority position. That is, in the state where the air volume adjustment damper 8 is disposed at the circulation priority position, the air volume of the circulating air 9 is larger than that in the state where the air volume adjustment damper 8 is disposed at the supply air priority position.

  When increasing the operating strength of the blower 1, the controller 53 moves the air volume adjustment damper 8 in a direction to increase the proportion of the outdoor air 3 in the air taken into the blower 1, thereby reducing the operating strength of the blower 1. At this time, the air volume adjusting damper 8 is moved in the direction of decreasing the proportion of the outdoor air 3 in the air taken into the blower 1.

  The operation of the air cleaning ventilator 103 according to Embodiment 3 will be described. In the following description, it is assumed that the operating intensity of the blower 1 is in two stages, weak and strong. In addition, the operation intensity of the ventilation fan 200 separately installed in the building is one stage, and is assumed to be either in operation or stopped.

  FIG. 10 is a flowchart showing a flow of operations of the air purification ventilation apparatus according to the third embodiment. In step S301, the control unit 53 operates the blower 1 with a weak operation strength and arranges the air volume adjustment damper 8 at the circulation priority position. In step S <b> 302, the control unit acquires operation state information of the ventilation fan 200 separately installed in the building by the receiving device, and determines whether or not the ventilation fan 200 separately installed in the building is in operation. If the ventilation fan 200 separately installed in the building is stopped, No in step S302, the process proceeds to step S301, and the control unit 53 operates the blower 1 with a weak operation strength and circulates the air volume adjustment damper 8. It keeps arrange | positioning in a priority position and continues the driving | operation of the air blower 1 with weak driving | running intensity | strength. If the ventilation fan 200 separately installed in the building is in operation, it becomes Yes in step S302, and in step S303, the control unit 53 operates the blower 1 with a strong operation intensity and supplies the air volume adjustment damper 8 with priority to supply air. Place in position. After step S303, the process proceeds to step S302.

  In the case of an air purifying ventilator that does not have an air flow adjustment damper or an air purifying ventilator that cannot move the air flow adjusting damper in conjunction with a change in the operating intensity of the blower, the ratio of outdoor air to the air taken in by the blower is Since it is constant, in order to increase the amount of outdoor air taken in by the blower, the operating strength of the blower must be increased. On the other hand, the air purifying and ventilating apparatus 103 according to Embodiment 3 can change the ratio of the outdoor air 3 in the air taken in by the blower 1 between when the operating strength of the blower 1 is weak and when it is strong. it can. Therefore, when the operating intensity of the blower 1 is increased, the proportion of the outdoor air 3 in the air taken in by the blower 1 can be increased. Therefore, when the air cleaning ventilator 103 according to Embodiment 3 increases the operating strength of the blower 1, the blower 1 is configured to increase the proportion of outdoor air 3 in the air taken in by the blower 1. The same outdoor air volume can be secured with a small total air volume compared to the case where the ratio of the outdoor air 3 in the air taken in is not changed. Therefore, noise and power consumption generated from the air cleaning ventilator 103 can be reduced.

  The function of the control unit 5 in the first embodiment, the function of the control unit 52 in the second embodiment, and the function of the control unit 53 in the third embodiment are realized by a processing circuit. That is, the control unit 5 includes a processing circuit that performs processing for controlling the operating strength of the blower 1 based on the measurement result of the negative pressure strength measuring means. The control unit 52 includes a processing circuit that performs processing for controlling the operating strength of the blower 1 based on the operating state information. When the control unit 53 increases the operation intensity of the blower 1 based on the operation state information and the process of controlling the operation intensity of the blower 1, the direction of increasing the ratio of the outdoor air 3 in the air taken into the blower 1. When the air flow adjustment damper 8 is moved to reduce the operating strength of the blower 1, the processing circuit that performs the process of moving the air flow adjustment damper 8 in the direction of decreasing the ratio of the outdoor air 3 in the air taken into the blower 1 is performed. Is provided. The processing circuit may be dedicated hardware or an arithmetic device that executes a program stored in the storage device.

  If the processing circuit is dedicated hardware, the processing circuit may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit, a field programmable gate array, or a combination thereof Is applicable. FIG. 11 is a diagram illustrating a configuration in which the function of the control unit of the air purification ventilation apparatus according to the first embodiment, the second embodiment, or the third embodiment is realized by hardware. The processing circuit 19 includes a logic circuit 19a that realizes processing for controlling the operating strength of the blower 1 based on the measurement result of the negative pressure strength measuring means, or processing for controlling the operating strength of the blower 1 based on the operating state information. It has been incorporated. Alternatively, when increasing the operating strength of the blower 1, the processing circuit 19 moves the air volume adjustment damper 8 in a direction to increase the proportion of the outdoor air 3 in the air taken into the blower 1, so that the operating strength of the blower 1 is increased. When the air flow is weakened, a logic circuit 19a that incorporates a process of moving the air volume adjustment damper 8 in a direction to reduce the proportion of the outdoor air 3 in the air taken into the blower 1 is incorporated.

  When the processing circuit is an arithmetic unit, the processing for controlling the operating strength of the blower 1 based on the measurement result of the negative pressure strength measuring means or the processing for controlling the operating strength of the blower 1 based on the operating state information is performed by software, firmware Or a combination of software and firmware. Alternatively, when the processing circuit is an arithmetic unit, when increasing the operating strength of the blower 1, the air volume adjustment damper 8 is moved in a direction to increase the proportion of the outdoor air 3 in the air taken into the blower 1, and The process of moving the air volume adjustment damper 8 in the direction of decreasing the ratio of the outdoor air 3 in the air taken into the blower 1 when the operating strength is weakened is realized by software, firmware, or a combination of software and firmware. The

  FIG. 12 is a diagram illustrating a configuration in which the function of the control unit of the air purification ventilation apparatus according to the first embodiment, the second embodiment, or the third embodiment is realized by software. The processing circuit 19 includes an arithmetic device 191 that executes the program 19b, a random access memory 192 that the arithmetic device 191 uses as a work area, and a storage device 193 that stores the program 19b. A process for controlling the operating strength of the blower 1 based on the measurement result of the negative pressure strength measuring means by the arithmetic device 191 developing and executing the program 19b stored in the storage device 193 on the random access memory 192; When the process for controlling the operating strength of the blower 1 based on the operating state information, or when the operating strength of the blower 1 is increased, the air volume adjustment damper 8 in a direction to increase the proportion of the outdoor air 3 in the air taken into the blower 1. When the operating intensity of the blower 1 is weakened, the process of moving the air volume adjustment damper 8 in the direction of decreasing the proportion of the outdoor air 3 in the air taken into the blower 1 is realized. Software or firmware is described in a program language and stored in the storage device 193.

  The processing circuit 19 implements each process by reading and executing the program 19b stored in the storage device 193. That is, the control units 5, 52, 53 are executed by the processing circuit 19 to control the operating strength of the blower 1 based on the measurement result of the negative pressure strength measuring means, and the blower 1 based on the operating state information. When the operation intensity of the fan 1 is increased or the operation intensity of the blower 1 is increased, the air volume adjustment damper 8 is moved in a direction to increase the proportion of the outdoor air 3 in the air taken into the blower 1, and the blower 1 is operated. When the strength is weakened, the program 19b for storing the program 19b in which the step of moving the air volume adjusting damper 8 in the direction of decreasing the ratio of the outdoor air 3 in the air taken into the blower 1 is executed as a result. A storage device 193 is provided. The program 19b can also be said to cause a computer to execute the above procedures and methods.

  In addition, when increasing the operating strength of the blower 1, the processing for controlling the operating strength of the blower 1 based on the measurement result of the negative pressure strength measuring means, the processing for controlling the operating strength of the blower 1 based on the operating state information, When the air volume adjusting damper 8 is moved in the direction of increasing the proportion of the outdoor air 3 in the air taken into the blower 1 to reduce the operating strength of the blower 1, the outdoor air 3 in the air taken into the blower 1 is reduced. As for the process of moving the air volume adjustment damper 8 in the direction of decreasing the ratio, a part may be realized by dedicated hardware and a part may be realized by software or firmware.

  As described above, the processing circuit 19 can realize the above-described functions by hardware, software, firmware, or a combination thereof.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit and change the part.

  1 Air blower, 1a motor, 1b shaft, 1c fan, 1d air supply port, 1e return air port, 1f air outlet, 2 dust removal deodorizer, 3 outdoor air, 4 clean air, 5, 52, 53 control unit, 6 indoor and outdoor Pressure sensor, 7 Receiver, 8 Air volume adjustment damper, 9 Circulating air, 19 Processing circuit, 19a Logic circuit, 19b Program, 101, 102, 103 Air cleaning ventilator, 191 Arithmetic unit, 192 Random access memory, 193 Storage device, 200 Ventilation fan.

Claims (4)

An air purifying and ventilating device installed in a building,
A blower provided with a first air intake port for taking in air from outside the building;
A deodorizing and deodorizing device for purifying the air sent from the blower into clean air;
An outlet for supplying the clean air to the interior of the building;
Negative pressure intensity measuring means for detecting the intensity of negative pressure inside the building;
A controller that controls the operating strength of the blower based on the measurement result of the negative pressure strength measuring means;
The said control part strengthens the driving | running intensity | strength of the said air blower, so that the negative pressure inside the said building is strong, The air purifying ventilation apparatus characterized by the above-mentioned.   The air cleaning and ventilating apparatus according to claim 1, wherein the negative pressure intensity measuring means is an indoor / outdoor pressure sensor that detects a pressure difference between the inside of the building and the outside of the building. An air purifying and ventilating device installed in a building,
A blower provided with a first air intake port for taking air from outdoors;
A deodorizing and deodorizing device for purifying the air sent from the blower into clean air;
An outlet for supplying the clean air to the interior of the building;
A receiving device for receiving operation state information of a ventilation fan installed in the building;
A control unit for controlling the operation intensity of the blower based on the operation state information,
The control unit increases the operating strength of the blower as the operating strength of the ventilation fan increases. The blower includes a second air intake port that takes in air from the inside of the building,
An air volume adjustment damper that changes a ratio of outdoor air taken into the blower through the first air intake and circulating air taken into the blower through the second air intake;
When increasing the operating strength of the blower, the control unit moves the air volume adjustment damper in a direction to increase the proportion of the outdoor air in the air taken into the blower, thereby reducing the operating strength of the blower. 4. The air flow adjusting damper according to claim 1, wherein the air volume adjusting damper is moved in a direction to decrease a ratio of the outdoor air in the air taken into the blower when the air is weakened. 5. Air purifier ventilator.

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