KR102163291B1 - Air-condition sensing system - Google Patents

Abstract

The present invention relates to an air quality detection system, and more specifically, to an air quality detection system in which a control unit automatically operates a ventilation unit to ventilate air to improve air quality when the concentration of carbon dioxide, fine dust, harmful gas, radon, and oxygen in the air is measured through a detection sensor, and the concentration is above the preset value. Furthermore, the air quality detection system operates an oxygen generator to automatically supply the insufficient oxygen to promote the health of the user when the oxygen concentration is insufficient. The air quality detection system includes the detection sensor, the control unit, the ventilation unit, and the heat exchanger.

Description

Air quality detection system {AIR-CONDITION SENSING SYSTEM}

The present invention relates to an air quality detection system, and more particularly, by measuring all concentrations of carbon dioxide, fine dust, harmful gas, radon, and oxygen in the air through a detection sensor, and when the concentration is higher than a preset value, the control unit automatically operates a ventilation unit. It operates to ventilate air to improve air quality, and further relates to an air quality detection system capable of promoting a user's health by automatically supplying insufficient oxygen by operating an oxygen generator when the oxygen concentration is insufficient.

Indoor and outdoor air quality is directly related to human health, so it is very important to properly monitor air quality. In particular, multi-use facilities such as underground stations and underpasses, passenger car terminal waiting rooms, passenger terminals at airports, libraries, museums, and large medical institutions have a high possibility of air quality pollution due to the large number of users, and air quality can be easily polluted due to the introduction of various pollutants. I can.

In this way, substances that can pollute air quality and affect various diseases are organic/inorganic pollution such as fine dust, ultrafine dust, carbon dioxide concentration, carbon monoxide, nitrogen oxide, asbestos, radon, lead, pesticides, and aldehydes. It is a variety of substances and is not determined by a single factor.

Therefore, technologies for real-time detection of such pollutants in the air are required, and as such conventional technology, Patent Publication No. 10-2020-0003433 "Self-measurement of air quality in each room of indoor space and fire multi-sensing control ventilation care system and its control. Method" (hereinafter referred to as "conventional technology 1"), Patent Publication No. 10-2018-0064276 "Indoor air cleaning system and its control method using a fine dust sensor" (hereinafter referred to as "conventional technology 2"), Patent Publication No. 10-1996-0034897 "A ventilation device for automatic detection of air pollution degree" (hereinafter referred to as'Prior Art 3') is mentioned.

First, the prior art 1 is installed along the ceiling of each household, and an air supply/air discharge flow pipe of a double pipe; A heat exchange unit 104 installed at a predetermined interval from the air supply/air discharge flow pipe 102 and connected to the air supply/air discharge flow pipe 102; An air supply pipe 106 which is located on one side of the interior of each household and is installed to communicate with the inner pipe of the air supply/air discharge flow pipe 102; It is configured to include an air exhaust pipe 108 which is located inside one side of each household at a certain interval from the air supply pipe 106, and is installed to communicate with the exterior of the air supply/air discharge flow pipe 102, Regarding the indoor ventilation care system and its control method to promote the health of users by removing harmful substances and sick house syndrome that cause cancer by ventilating the indoor air according to the indoor air condition of each household including buildings will be.

In addition, the prior art 2 is a damper for internal circulation that communicates or blocks the communication between the inlet flow path side in which the inflow flow generating unit is located and the discharge flow path in which the discharge flow generating unit is located; An outdoor damper for opening and closing the outdoor supply port; A fine dust sensor installed indoors to measure the concentration of fine dust in the room; In accordance with the concentration of fine dust detected by the fine dust sensor, the concentration of fine dust is notified to the user's terminal, and the inflow flow generating unit is operated according to the user's terminal signal and the outdoor damper is closed so that indoor air is discharged from the indoor exhaust port. A control unit for circulating indoor air to circulate indoors through a flow path, an internal circulation damper, an inflow flow path and an indoor supply port; A first filter unit provided on one side of the heat exchanger located on the discharge channel side to filter the circulating indoor air to ventilate indoor air with outside air and to prevent heat loss,

In the prior art 3, a housing having an external shape by forming a mounting hole, a driving motor that rotates the wing portion by receiving power, a guide portion installed on the circumferential surface of the wing portion to guide the air volume, and air using a sensor A detection sensor unit that automatically detects the level of pollution and a control unit that controls the operation of the driving motor by receiving a signal from the detection sensor unit is provided to automatically detect the level of contamination of the indoor air to perform appropriate ventilation. It relates to a designed ventilation device.

However, in the case of the prior art 1 and 2, it is related to a ventilation system that is provided in an apartment house to ventilate indoor air, and is a technology that introduces outside air by simply checking the presence or absence of fine dust or harmful substances. Hatch is unreasonable to measure all kinds of harmful substances,

Even in the case of the prior art 3, since it is impossible to measure the oxygen concentration in the air, there is a limitation in that it is difficult to cope with the health problems of users that occur when oxygen is insufficient.

Therefore, the present invention was devised to solve the above problem,

Consisting of a detection sensor, a control unit and a ventilation unit, the detection sensor can detect and measure all concentrations of carbon dioxide, fine dust, harmful gas, radon, and oxygen, thereby measuring and outputting all various harmful substances that reduce air quality. And

An object of the present invention is to provide an air quality sensing system capable of maintaining a clean air quality state by automatically operating a ventilation unit by the control unit.

Furthermore, it is another object of the present invention to provide an air quality sensing system capable of automatically supplying oxygen when oxygen concentration is lowered by further providing an oxygen generator.

In addition, the control unit further includes an output unit that outputs the data measured by the detection sensor so that the naked eye can easily recognize it, and provides an air quality detection system designed to operate the ventilation unit and the oxygen generator manually. Is another purpose.

To achieve the above purpose,

The air quality detection system according to the present invention includes a detection sensor for measuring carbon dioxide concentration, fine dust concentration, harmful gas concentration, radon concentration and oxygen concentration in air;

A control unit provided with an output unit outputting the data measured by the detection sensor;

A ventilation unit operating on an operation signal transmitted from the control unit through data of the detection sensor;

An oxygen generator for generating oxygen by operating by the control unit when the oxygen concentration measured by the detection sensor is measured to be higher than a preset concentration;

It characterized in that it comprises a.

As described above, the air quality detection system according to the present invention can check the state of air quality in real time by measuring the concentration of carbon dioxide, fine dust, harmful gas, and radon in the air through a detection sensor, and in particular, such a measured value is more than a preset value. When it is high, the control unit automatically operates the ventilation unit to circulate air, so that the air quality can always be maintained in a good state.

Moreover, the detection sensor further measures the oxygen concentration and automatically operates the oxygen generator when the oxygen concentration drops, so that the user can always breathe with sufficient oxygen, thereby preventing headaches and shortness of breath from occurring. have.

In addition, the ventilation unit and the oxygen generator can be operated manually through a control unit, and at the same time, user convenience can be adjusted by allowing the user to arbitrarily adjust the setting value, and different environments can be created according to the user to increase satisfaction. It works.

1 is a schematic block diagram of an air quality detection system according to the present invention
2 is a photographic diagram of an air quality detection system according to the present invention
3 is an enlarged photograph of each configuration of the air quality detection system according to the present invention
4 is a modified example of the air quality detection system according to the present invention
5 and 6 are operational diagrams of a modified example of the air quality detection system according to the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention will be described in detail in the text of the bar, implementation (態樣, aspect) (or embodiment) that can apply various changes and can have various forms. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood that all changes, equivalents, and substitutes included in the spirit and scope of the present invention are included.

In each drawing, the same reference numerals, in particular the number of tens and ones, or the same number of tens, ones, and alphabet indicate members having the same or similar functions, and unless otherwise specified, each of the drawings The member indicated by the reference number can be identified as a member conforming to these criteria.

In addition, the components in each drawing are expressed by exaggeratingly large (or thick) or small (or thin) or simplified the size or thickness in consideration of the convenience of understanding, but this limits the scope of protection of the present invention. It shouldn't be.

The terms used in the present specification are only used to describe specific embodiments (sun, 態樣, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as ~include~ or ~consist~ are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being added.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

The air quality detection system S according to the present invention includes a detection sensor 10 that detects harmful components in the air, and a control unit 20 and control unit 20 that collects and outputs data measured by the detection sensor 10. It comprises a ventilation unit 30 for ventilating the air by receiving a command signal and an oxygen generator for generating oxygen.

First, as shown in Figs. 1 and 2, the detection sensor 10 is a sensor that detects various harmful components in the air, and may be provided with one or two or more, and preferably, a plurality of sensors according to a location to be installed. It is good that the detection sensor 10 is provided.

The detection sensor 10 detects and measures harmful components in the air, and preferably, it enables to measure all of the concentration of carbon dioxide, the concentration of fine dust, the concentration of harmful gases, the concentration of radon, and the concentration of oxygen.

At this time, the detection sensor 10 may be an integrated sensor capable of integrally measuring the concentration of each harmful component, or may be composed of a plurality of specific sensors capable of individually measuring the concentration of each harmful component. Do not limit the scope of interpretation.

The detection sensor 10 does not detect the presence or absence of the harmful components, but detects and measures the concentration of the harmful components, and the measured data is transmitted to the controller 20 by wired or wireless communication. do.

The control unit 20 includes an output unit 21 for outputting the received data, and the output unit 21 includes a display unit 211 for displaying the data to be visually confirmed, and the ventilation unit ( 30) and a setting unit 213 capable of controlling the operation of the oxygen generator or setting respective reference data values, and an embodiment is shown in FIG. 3[B].

That is, in the present invention, the user can manually operate the ventilation unit 30 and the oxygen generator through the setting unit 213, or when the value is greater than or equal to a preset value, the control unit 20 comprises the ventilation unit 30 and It transmits a command signal to the oxygen generator so that it can be operated.

At this time, the control unit 20, the ventilation unit 30, and the oxygen generator are connected by wire to transmit and receive command signals, but it is also possible to transmit and receive wirelessly through IOT technology, Bluetooth, Wi-Fi, etc. Should not be interpreted as limiting.

The ventilation unit 30 includes a housing 31, a ventilation fan 32 built into the housing 31, and a purification filter for purifying air introduced from outside air or air discharged by the ventilation fan 32 It is made including (33).

As shown in Fig. 1, the ventilation unit 30 may be provided in one or two or more locations to be installed, and as shown in Fig. 3[A], the housing 31 and the ventilation fan 32 ) And a purification filter 33, and is configured to discharge indoor air to the outside or to introduce outside air into the room.

More preferably, the ventilation unit 30 is provided in two or more, some of which are installed so that outside air can be introduced into the room, and the rest are installed so that the indoor air can be discharged to the outside to circulate air. It is good to organize it so that it can be done.

In addition, the purification filter 33 needs to be replaced periodically depending on the life and pollution degree, and the replacement time can be confirmed by an air flow detection sensor provided in the housing 31, which indicates the display unit 211 By being output through, the user can easily check the replacement cycle of the purification filter.

Further, the present invention is characterized in that a separate heat exchanger is further provided in order to prevent indoor air from being exhausted and external air introduced by the ventilation unit 30.

That is, when the indoor air is exhausted, the air introduced into the room is heated by using the heat contained in the indoor air to minimize heat loss, thereby contributing to energy saving.

In addition, the present invention further includes an oxygen generator, and the oxygen generator generates oxygen through a chemical reaction such as osmotic pressure and radiates it to the outside. This is the oxygen concentration in the detection sensor 10 below a preset concentration. When measured, the control unit 20 is configured to operate by transmitting a command signal.

Of course, as mentioned above, it is also possible to allow the user to operate manually.

Therefore, headaches and shortness of breath due to hypoxia can be prevented from appearing to the user in advance so that they can lead a healthy life, and the oxygen generator can be replaced with a variety of oxygen generators already known and sold, and the oxygen generator and the control unit (20) In addition, wired or wireless connection is possible, and the scope of rights should not be limited and interpreted.

In addition, although not shown in the drawing, an alarm device may be further provided, and the alarm device is a device that outputs visual and audible signals, and a problem occurs in the operation of the ventilation unit 30 and the oxygen generator, or harmful components It is desirable to operate when the concentration of is high to the dangerous level so that the user can recognize it so that the occurrence of safety accidents can be prevented.

Further, Figures 4 to 6 show a modified example of the ventilation unit 30 according to the present invention, the ventilation unit 30 is to maintain the replacement of the purification filter 33 or cleaning of the internal ventilation fan 32 It consists of a structure in which the first body 35 and the second body 37 are mutually coupled for maintenance, and a one-touch block unit 50 is provided for easier coupling and separation.

First, a position protrusion is provided at a lower portion of the first body 35, and a position groove fitted to the position protrusion is provided at a lower portion of the second body 37, and the first body 35 ) A first block is provided on the upper side and a second block coupled to the first block is provided on the second body 37, and the first body 35 is combined with the first block and the second block. And the second body 37 can be connected to each other (see Fig. 4).

The first block and the second block are the configurations of the one-touch block unit, and will be described in more detail with reference to FIGS. 5 and 6, the first block 51 provided on the upper end of the first body 35

Inside, a falling hole (511A) formed in a vertical direction, and a seating hole (511B) in which the first withdrawal hole (514) is communicated in the front side and communicated in the rear horizontal direction from the lower portion (511Ab) of the drop hole (511A), A curved position displacement hole 511D connecting the rear of the start 511B and the upper part of the dropping hole 511A is provided,

A hemispherical fixture 517 is hinged to the first withdrawal hole 514 so as to protrude to the inlet 513,

In the lead-in bar 523 of the second block 52 provided on the upper end of the second body 37, a fixing groove 523A into which the fixing body 517 protruding in the direction of the lead-in portion 513 is inserted is formed. And

The plurality of fixing balls 54 are filled in the seating hole 511B to support the rear end of the fixing body 517 to prevent the fixing body 517 from being drawn into the first block 51 to be first Maintaining the fixing force of the block 51 and the second block 52,

In the first block 51

The rearmost fixing ball 54 filled in the seating hole 511B is moved to the top of the dropping hole 511A through the position displacement hole 511D, so that the fixing body 517 is inside the first block 51 It is characterized in that the position displacement means 55 is further provided to allow the first block 51 and the second block 52 to be slidably engaged and disengaged from the first block 51 and the second block 52, and hereinafter, Figs. 5 and 6 Each configuration and operation will be described in more detail with reference to.

5 and 6 show the steps of combining and disengaging, and Fig. 5A shows the state before the first block 51 and the second block 52 are combined. [B] shows the process of coupling, [A] of Fig. 6 shows a structure that maintains the fixing force in the coupled state, and [D] of Fig. 6 shows the first block 51 and the second block. It shows a process of releasing the fixing force to separate the blocks 52 from each other.

In addition, in this specification, for convenience of description, the direction of the second block 52 is referred to as front, the opposite direction is referred to as rear, and the vertical direction is determined based on FIG. 5.

First, the first block 51 includes a first body 511 and a guide bar 512 spaced apart from the front of the first body 511 to form an inlet 513.

Specifically, a first protrusion protruding forward is formed on an upper front portion of the first body 511, and a guide bar 512 is bent in a vertical direction in front of the first protrusion, so that the guide bar 512 and the first protrusion are formed. 1 The front of the body 511 is made to be spaced apart from each other, and the spaced apart space is referred to as a lead-in portion 513, and the lead-in bar 523 of the second block 52 is in the lead-in portion 513 It is made so that it can be interpolated.

Specifically, the second block 52 includes a second body 521, a second protrusion protruding from a lower portion of the second body 521 in the direction of the first block 51, and is bent upward at an end of the second protrusion. Consists of a second body 521 and a lead-in bar 523 forming a spaced apart space called a guide groove 522, and when the first block 51 and the second block 52 are slidingly coupled, the lead-in bar ( The first block 51 and the second block 52 are prevented from being separated in the horizontal direction by inserting 523 into the inlet 513 and inserting the guide bar 512 into the guide groove 522.

A drop hole 511A is formed in a vertical direction in front of the inside of the first body 511, and a seating hole 511B is formed in the rear horizontal direction from the lower part 511Ab of the drop hole, and the mounting hole ( 511B) It is characterized in that a curved position displacement hole (511D) connecting the upper portion (511Aa) of the drop hole from the rear is provided, and the fixing ball 54 moves along the ball to move the first block 51 It is made to be able to fix and release the coupled state of the and the second block 52.

More specifically, a first inlet hole communicating with the inlet 513 is formed in front of the seating hole 511B, and the first inlet hole is rotated with respect to the rotation shaft 517A to reach the inlet 513. A fixture 517 is provided so as to be able to appear.

The fixture 517 has a hemispherical shape, and when the lead-in bar 523 rises or falls, it is naturally rotated and inserted into the inlet hole by a spherical outer surface so as not to interfere with the coupling of the lead-in bar 523. Avoid.

A plurality of fixing balls 54 are provided in close contact with each other in the seating hole 511B, and another fixing ball 54 is located at the upper part 511Aa of the falling hole, and the lower part 511Ab of the falling hole ) In the space portion (511C) is formed to secure the entry space of the fixture (517).

In order for the fixing ball 54 to be located at the upper part 511Aa of the dropping hole, an entry prevention block 561 is further provided on the first body 511,

The entry prevention block 561 has a hemispherical shape in the front, and an entry hole 561A having a diameter through which the fixing ball 54 can pass is formed in the front, and is parallel with the seating hole 511B. It is provided below the top of the drop hole (511A).

More specifically, the entry-preventing block 561 is provided in the second withdrawal hole 515 provided in the first body 511 (is provided above the first withdrawal hole 514 to invade the inlet 513) It is made so that the front can protrude through), and is provided so as to cross the dropping hole 511A, and a spring 562 is provided at the rear end to maintain a state protruding forward. .

As shown in [A] of Fig. 3A, as the entry prevention block 561 maintains a forward protruding state, the entry hole 561A deviates from the falling hole 511A to prevent the falling of the fixed ball 54, When the lead-in bar 523 is inserted into the lead-in portion 513 as shown in [B] of FIG. 5, first, the fixture 517 is rotated and inserted, and when the entry-prevention block 561 is sequentially inserted, it falls. As the ball 511A and the entry hole 561A are arranged to communicate with each other, the fixed ball 54 passes through the entry hole 561A and falls.

[B] of FIG. 5 is excessively displayed so that the rotation of the fixture 517 is 90 degrees, but the actual rotation is made less than 90 degrees.

6C shows a state in which the first block 51 and the second block 52 are slidingly coupled. When the lead bar 523 is completely coupled to the lead portion 513, the lead bar ( 523) The end of the entry prevention block 561 is inserted into the insertion groove 523B provided on the upper part, so that the entry prevention block 561 is in its original position, and the fixed body 517 by the load of the dropped fixing ball 54 As) rotates and protrudes again, the fixing body 517 is fitted into the fixing groove 523A provided under the lead-in bar 523, and a plurality of fixing balls 54 are filled in the seating hole 511B. Retraction of the fixture 517 is restricted to prevent the first block 51 and the second block 52 from being separated.

In addition, if the fixing ball 54 is to be separated with a strong force, the fixing ball 54 is pushed and rises up along the falling hole 511A and can be separated, so that the rise is prevented directly above the lower portion 511Ab of the falling hole in order to prevent this. The member 564 is rotatably provided by an elastic shaft 564A, and the ascending preventing member 564 allows the falling of the fixing ball 54 in the vertical hole by the elastic shaft 564A. The fixed ball 54 has a structure that prevents it from rising to compensate for the aforementioned problem. (The elastic shaft 564A is provided with an elastic body, etc. so that the ascending preventing member 564 is in its original position. In this case, the elastic force is weaker than the load of the fixing ball 54 so that interference does not occur in the fall of the fixing ball 54.)

In addition, in order to unlock the first block 51 and the second block 52, as shown in [A] of 5 above, as shown in [A] of the above, one of the fixing balls 54 is relocated to the top of the dropping hole 511A, and the seating hole 511B It is necessary to form a space portion (511C) within, the present invention is further provided with a position displacement means (55) for this purpose.

The position displacement means 55 is composed of a push bar 551, a connection bar 552, a shooting block 553 and an elastic member 554, the push bar 551 is a first body 511 It is provided to be elevating in the elevating groove 516 provided in the elevating and descending groove 516, and the end is protruded upward so that the user can press the push bar 551, and the connection bent forward at the lower portion of the push bar 551 Bar 552 is provided, and the connecting bar 552 is provided with a shooting block 553 that prevents the retraction of the fixed ball 54 in normal times and pushes the lower part of the fixed ball 54 when necessary. An elastic member 554 is provided under the block 553.

Therefore, in normal times, the shooting block 553 rises to support the rear end of the rearmost fixing ball 54 provided in the seating hole 511B to limit the movement of the fixing ball 54, as shown in Fig. 6 [D]. , When the push bar 551 is pressed, the shooting block 553 descends to secure a space for the rearmost fixing ball 54 to retreat, and when the push bar 551 is released, the elastic member 554 is Due to the elastic force, the shooting block 553 is raised and the rearmost fixing ball 54 is pushed to the top of the dropping hole 511A through the position displacement hole 511D.

At this time, when the shooting block 553 descends, a magnet 555 is provided at the end of the mounting hole 511B so that the fixing balls 54 provided in the mounting hole 511B can naturally retreat, The fixed balls 54 are all composed of iron balls so that they can be moved by magnetic force.

In addition, the end of the position displacement hole 511D (referring to the boundary with the upper portion 511Aa of the falling hole) has a return preventing member (referring to the boundary between the upper portion 511Aa of the falling hole) in order to prevent the fixing ball 54 from being bounced back and retreated by recoil when it moves. 563) is further provided, and the return preventing member 563 prevents the fixing ball 54 from retreating due to recoil by allowing rotation in only one direction, similar to the stopper.

That is, with the configuration as described above, the first block 51 and the second block 52 can be coupled and disengaged with one touch with each other, and the bonding force can be improved by maintaining a fixed state firmly.

In addition, in the description of the present invention above, the air quality detection system having a specific shape, structure, and configuration has been mainly described with reference to the accompanying drawings, but the present invention can be variously modified, changed, and substituted by those skilled in the art. And the substitution should be construed as belonging to the scope of the present invention.

S: Air quality detection system
10: detection sensor 20: control unit
21: output unit 211: display unit
213: setting unit 30: ventilation unit
31: housing 32: ventilation fan
33: purification filter 35: first body
37: second body 50: one-touch block unit

Claims (4)

A detection sensor 10 for measuring carbon dioxide concentration, fine dust concentration, harmful gas concentration, radon concentration and oxygen concentration in the air;
A control unit (20) provided with an output unit (21) for outputting the data measured by the detection sensor (10);
A ventilation unit (30) operating on an operation signal transmitted from the control unit (20) through data of the detection sensor (10);
A heat exchanger for heating air introduced from outside air through heat of air exhausted from the room;
Including,
The ventilation unit 30 is
It comprises a housing 31, a ventilation fan 32 built in the housing 31 for introducing and discharging outside air, and a purification filter 33 for purifying the incoming or exhausted air,
In the housing 31, the first body 35 and the second body 37 are detachably coupled by a one-touch block unit 50,
The one-touch block unit 50
A first block 51 provided in the first body 35 and provided with a lead-in portion 513, and a lead-in bar 523 inserted into the lead-in portion 513 of the first block 51 A second block 52 provided in the second body 37 so as to be slidably coupled to the first block 51 and a plurality of fixed balls for maintaining the bonding force between the first block 51 and the second block 52 (54) including,

The first block 51 provided on the upper end of the first body 35
Inside, a falling hole (511A) formed in a vertical direction, and a seating hole (511B) in which the first withdrawal hole (514) is communicated in the front side, and the inner A curved position displacement hole 511D connecting the rear of the start 511B and the upper part of the dropping hole 511A is provided,
A hemispherical fixture 517 is hinged to the first withdrawal hole 514 so as to protrude to the inlet 513,

In the lead-in bar 523 of the second block 52 provided on the upper end of the second body 37, a fixing groove 523A into which the fixing body 517 protruding in the direction of the lead-in portion 513 is inserted is formed. And

The plurality of fixing balls 54 are filled in the seating hole 511B to support the rear end of the fixing body 517 to prevent the fixing body 517 from being drawn into the first block 51 to be first Maintaining the fixing force of the block 51 and the second block 52,

In the first block 51
The rearmost fixing ball 54 filled in the seating hole 511B is moved to the top of the dropping hole 511A through the position displacement hole 511D, so that the fixing body 517 is inside the first block 51 Air quality detection system, characterized in that further provided with a position displacement means (55) to allow the first block (51) and the second block (52) to be slidably coupled to and released from the first block (51) and the second block (52). The method of claim 1,
An oxygen generator for generating oxygen by operating by the control unit 20 when the oxygen concentration measured by the detection sensor 10 is measured to be less than a preset concentration;
Air quality detection system, characterized in that comprising a further. The method of claim 1,
The output unit 21 of the control unit 20 is
Air quality detection system, characterized in that it further comprises a display unit 211 for displaying the measured data. The method according to any one of claims 1 to 3,
The ventilation unit 30 is provided in two or more, and some of the two or more ventilation units 30 are installed to allow outside air to flow into the room, and the others are installed to discharge indoor air to the outside. Air quality detection system characterized by.

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