KR20240045274A - ventilation system - Google Patents

Abstract

[Problem] The present invention provides a ventilation system and ventilation method that effectively ventilates the user's activity area in a large-scale indoor facility to create a comfortable environment. [Solution] The present invention is a ventilation system installed in a facility with a large space, and includes a package air conditioner (3) having a heat medium circuit (33) in which a refrigerant circulates, and a heat exchanger (22) built into the heat medium circuit (33). It is composed of an outdoor air conditioner (2) and an exhaust unit (9) for exhausting the outdoor air (A) circulated in the facility (1) to the outdoors. The package air conditioner 3 and the outdoor air conditioner 2 are installed on the upper floor, and the exhaust unit 9 is installed on the lower floor. The outdoor air (A) introduced from the outdoor air conditioner (2) on the upper floor circulates through the large space (S) and is then exhausted outdoors through the exhaust section (9), so that the large space (S) is always ventilated with fresh air. It is done.

Description

Ventilation systems and ventilation methods

The present invention relates to ventilation systems and ventilation methods. More specifically, it relates to a ventilation system and ventilation method that effectively ventilates the user's activity area in a large-scale indoor facility to create a comfortable environment.

Recently, buildings have become more airtight and highly insulated, and if sufficient ventilation is not provided, the carbon dioxide concentration increases. In particular, in new buildings, the concentration of formaldehyde and volatile organic compounds (VOC: Vapor Organic Composition) can become too high. . In addition, insufficient ventilation can increase humidity, causing mold and mites to grow, which can cause allergies.

Among buildings, indoor facilities with large spaces, including gymnasiums, are places for various sports events and play an important role as emergency evacuation sites for local residents in the event of an emergency disaster. In particular, recently, as a preventive measure against infectious diseases, including the new coronavirus, it has been recommended to regularly introduce outside air into living spaces and avoid confined spaces with poor ventilation as much as possible. In order to deal with air pollution in such confined spaces, a 24-hour ventilation system that ventilates a certain amount of air to the entire building 24 hours a day is being adopted.

As a ventilation system employed in facilities with large spaces, for example, a natural ventilation method in which outside air is introduced through a ventilation window formed on the second floor, and the air circulating in the large space is exhausted outdoors through a ventilation window formed on the first floor. This is being adopted.

Meanwhile, for the purpose of promoting ventilation in large spaces, many forced ventilation systems using mechanical ventilation have been proposed. Ventilation systems employing mechanical ventilation include a type 1 ventilation system in which outside air is forcibly introduced into the room by an air supply blower and indoor air is forcibly exhausted outdoors by an exhaust blower, and There is a type 2 ventilation method that naturally exhausts the outdoor air supplied by air, and a type 3 ventilation method that forcibly exhausts the outdoor air supplied to a large space by natural air supply to the outdoors using an exhaust blower.

For example, Patent Document 1 discloses a ventilation system employing a type 1 ventilation system to increase the efficiency of air conditioning in large spaces. Specifically, an air supply blower that introduces outside air is installed at a height near the floor of the large space to be air-conditioned, and an exhaust blower that exhausts indoor air to the outdoors is installed on the walls and ceiling of the large space. Install at a height of 50% or more of the height.

With this configuration, the high-temperature air staying near the ceiling warmed by sunlight is slowly descending and is exhausted outdoors through the exhaust blower, thereby preventing the high-temperature air from descending to the floor of a large space. . Therefore, the temperature rise in the activity area of users who are active indoors can be suppressed, and ventilation in the activity area can also be promoted because outside air is introduced from the air supply blower to the lower part of the large space.

Patent Publication No. 2019-070480

According to Patent Document 1, by installing an exhaust blower at an arbitrary position, it is possible to promote ventilation in a large space and improve the efficiency of the air conditioner. On the other hand, in the ventilation system according to Patent Document 1, since outside air flows directly into the room through the air supply blower, for example, in winter when the outside temperature is low, low-temperature outside air flows into the room as is.

In addition, because air supply blowers are installed near the floor of indoor facilities, low-temperature outdoor air introduced into the room does not rise toward the ceiling, but stays near the floor, which is the activity area of users of the indoor facility. Therefore, there are concerns that the temperature in the activity area may drop and ventilation may become uneven, deteriorating the user's activity environment.

In order to deal with the above problems, when an air conditioner is operated to air-condition a large space, in a situation where low-temperature outside air is always introduced into the room by the air supply blower, the operating load of the air conditioner increases, causing damage to the large space. It takes a long time to raise the temperature to the target temperature.

The present invention was created in consideration of the above points, and its purpose is to provide a ventilation system and ventilation method that effectively ventilates the user's activity area in a large-scale indoor facility to create a comfortable environment.

In order to achieve the above object, the ventilation system of the present invention has a ventilation structure in which the space on the upper floor and the space on the lower floor are continuous, and is a ventilation system installed in a facility where a large space is formed surrounded by a floor portion, a ceiling portion, and a wall portion, A heat source device having a heat medium circuit in which a refrigerant circulates, a housing installed on the upper layer and formed with an outside air introduction path leading to a supply port that supplies outside air introduced from an inlet to the large space, and installed on the path of the heat medium circuit. An outdoor air conditioner having a heat exchanger for cooling or heating outdoor air introduced from the inlet, a floor exhaust hole formed at a predetermined position in the floor surface portion, and a floor exhaust hole formed at a predetermined position in the wall portion of the lower layer to communicate with the outdoors. It is provided with an exhaust section consisting of a wall exhaust hole and an exhaust induction path communicating from the floor exhaust hole to the wall exhaust hole.

Here, by providing a heat source device having a heat medium circuit in which a refrigerant circulates, for example, the heat source device is a heat medium circuit of an air conditioner or a cooling water circulation device (e.g., a refrigerant such as Fron gas or alternative gas, hot water or cold water, heating or cooling gas, etc.), by incorporating a heat exchanger of the outdoor air conditioner described later, the outside air introduced into the external air conditioner can be supplied to the large space after heat exchange.

In addition, a housing installed on the upper floor and formed with an outdoor air inlet path leading to a supply port that supplies outdoor air introduced from the inlet into a large space, and a heat exchanger installed on the path of the heat medium circuit to cool or heat the outdoor air introduced from the inlet. By providing a conditioner with an outdoor air conditioner, ventilation can be promoted by supplying outdoor air to a large space. In addition, since the heat exchanger is built into the heat medium circuit of the heat source device and the outside air introduced into the outdoor air conditioner is heat exchanged by the heat medium supplied in conjunction with the operation of the heat source device, the outside air after the heat exchange can be supplied to a large space, thereby increasing the temperature of the large space. It becomes possible to maintain the temperature at the right temperature.

In addition, as the outside air temperature controlled by the outside air conditioner is supplied to the large space, a difference occurs between the temperature (humidity) of the outside air and the temperature (humidity) within the large space, so that the outside air circulates throughout the large space due to the instantaneous diffusion effect. You can do it.

In addition, the exhaust is composed of a floor exhaust hole formed at a predetermined position in the floor portion, a wall exhaust hole formed at a predetermined position in the lower wall portion and communicating with the outdoors, and an exhaust induction path communicating from the floor exhaust hole to the wall exhaust hole. By providing a section, the outside air supplied from the outside air conditioner circulates through a large space and is then exhausted from the floor exhaust hole. And, the outdoor air exhausted from the floor exhaust hole is exhausted to the outdoors through the wall exhaust hole through the exhaust induction path. Additionally, it is also possible to use a type 1 ventilation system that forcibly exhausts air by installing an exhaust blower at a predetermined position in the exhaust section.

Here, many facilities with large spaces have a floor space, but moisture accumulates in this floor space, causing expansion or contraction of the floor area. In this regard, by forming an exhaust induction path that communicates from the floor exhaust hole to the wall exhaust hole, ventilation in the space under the floor is secured and moisture is prevented from accumulating in the space under the floor.

Additionally, in the case where the heat source device is installed on the upper floor and is an air conditioner that targets air conditioning for a predetermined area on the upper floor, a large space can be maintained at a predetermined temperature by the air conditioner. In addition, as described above, the outdoor air supplied from the outdoor air conditioner is cooled or heated to a predetermined temperature in heat exchange and then supplied to the large space, thereby conditioning the air until it reaches the target temperature set by the air conditioner. The operating time of the air conditioner can be shortened, thereby reducing the operating load of the air conditioner.

In addition, when the outdoor air conditioner and the air conditioner are a set of air supply units, and the air supply units are installed side by side at predetermined intervals, the large space can be maintained at an appropriate temperature by installing a plurality of air supply units according to the size of the large space. and ventilation can be performed in a short period of time. Additionally, by arranging the outdoor air conditioner and the air conditioner close together, the heat exchanger of the outdoor air conditioner can be simply integrated into the heat medium circuit of the air conditioner.

In addition, when the floor exhaust hole is located on the center line of an adjacent air supply unit when viewed from the plane of a large space, the outdoor air circulated throughout the large space can be most efficiently exhausted to the outdoors, thereby improving ventilation efficiency. It can be raised.

In addition, the air conditioner has an indoor unit and an outdoor unit connected by a heat medium circuit, and the heat medium circuit includes a first refrigerant pipe for sending refrigerant from the outdoor unit to the indoor unit, a second refrigerant pipe for sending refrigerant from the indoor unit to the outdoor air conditioning machine, and a second refrigerant pipe for sending refrigerant from the outdoor unit to the outdoor air conditioner. In the case where there is a third refrigerant pipe that sends the refrigerant to the outdoor unit, the air conditioner and the outdoor air conditioner can be integrated through a simple piping structure.

With the above configuration, during cooling operation, the refrigerant that has become a low-temperature liquid through the pressure reducer of the outdoor unit is sent to the indoor unit through the first refrigerant pipe to cool the heat exchanger of the indoor unit. And a part of the refrigerant that cooled the heat exchanger of the indoor unit is sent to the outdoor air conditioner through the second refrigerant pipe to cool the heat exchanger of the outdoor air conditioner. Afterwards, the refrigerant returns to the outdoor unit through the third refrigerant pipe, becomes a low-temperature liquid in the pressure reducer, and is sent to the first refrigerant pipe. By repeating this cycle, the heat exchanger of the indoor unit and outdoor air conditioner can be efficiently cooled to promote ventilation of a large space and at the same time maintain the indoor temperature of the large space at the target temperature.

Meanwhile, during heating operation, the cycle is opposite to that during cooling operation. That is, the refrigerant that has become a high-temperature gas in the outdoor unit is sent to the outdoor air conditioner through the third refrigerant pipe, and the heat exchanger of the outdoor air conditioner is heated by the heat of the refrigerant. In addition, the refrigerant is sent to the indoor unit through the second refrigerant pipe, warms the heat exchanger of the indoor unit, and then returns to the outdoor unit through the first refrigerant pipe, becomes a high-temperature gas in the compressor, and is sent to the third refrigerant pipe. By repeating this cycle, the heat exchanger of the indoor unit and outdoor air conditioner can be efficiently heated to promote ventilation of a large space and at the same time maintain the temperature of the large space at the target temperature.

In addition, an arena section including a floor portion is formed on the bottom floor, and a radiant panel targeting the arena portion for air conditioning is installed, and the radiant panel has a height from the floor portion to the upper floor. Additionally, when installed around the entire perimeter of the wall portion, it becomes possible to maintain the arena portion, which is the activity area of facility users, at a comfortable temperature at all times.

Additionally, since the radiant panel does not generate blowing air, it is not affected by blowing air, even when playing a game (e.g. badminton or table tennis) that is easily affected by blowing air in the arena. It becomes possible to maintain the entire arena at an appropriate temperature.

In addition, the upper layer is a step-shaped stand portion that slopes downward from the wall portion on the back side toward the front side, and a front passage is formed on the front side of the stand portion and a rear passage is formed on the back side, and an outdoor air conditioner is installed in the rear passage. In this case, since outside air can be supplied from the back passage toward the front side, outside air can be circulated throughout the large space.

In order to achieve the above object, the ventilation system of the present invention has a ventilation structure in which the space on the upper floor and the space on the lower floor are continuous, and is a ventilation system installed in a facility where a large space is formed surrounded by a floor portion, a ceiling portion, and a wall portion, A heat source device having a heat medium circuit in which a refrigerant circulates, a duct installed on the upper floor and connected to an air supply hole formed at a predetermined position on a wall of the upper floor, and supplying external air introduced from the duct to an inlet into the large space. A housing formed with an outside air introduction path leading to a supply opening, a heat exchanger installed on the path of the heat medium circuit to cool or heat the outside air introduced from the inlet, and disposed in the air supply chamber where the supply opening is formed, so that the outside air is introduced from the inlet. An air supply fan that generates an airflow toward the air supply port, an outdoor air conditioner disposed on a downstream side of the heat exchanger on the outdoor air introduction path and having a supply air filter that purifies the outdoor air introduced from the inlet, and a predetermined predetermined amount on the bottom surface. It has a floor exhaust hole formed at a location, and a wall exhaust hole formed at a predetermined location in the wall portion of the lower layer and communicating with the outdoors.

Here, by providing a heat source device having a heat medium circuit in which a refrigerant circulates, for example, by assembling a heat exchanger of the outdoor air conditioner described later to the heat medium circuit of an air conditioner or a cooling water circulation device as a heat source device, the outside air introduced into the outside air conditioner After the heat has been exchanged, the air can be supplied to a large space.

Additionally, by providing an outdoor air conditioner installed on an upper floor, it is possible to promote ventilation in a large space by supplying outdoor air introduced into the outdoor air conditioner to the large space.

In addition, the outdoor air conditioner has a housing formed with a duct connected to a supply hole formed at a predetermined position on the wall of the upper floor, and an outdoor air introduction path through a supply port that supplies outdoor air introduced from the duct to the inlet into the large space, thereby creating a large-scale space. External air can be introduced into the housing of the outdoor air conditioner through a duct connected to the wall of the formed facility.

In addition, the outdoor air conditioner is installed on the path of the heat medium circuit and has a heat exchanger that cools or heats the outside air introduced from the inlet, so that the outside air introduced to the outside air conditioner exchanges heat by the heat medium supplied in conjunction with the operation of the heat source device. Since the outside air after heat exchange can be supplied to a large space, it becomes possible to maintain the temperature of the large space at an appropriate temperature.

In addition, the outdoor air conditioner is placed in the air supply room where the supply port is formed and has a supply fan that generates an airflow from the inlet to the supply port, so that more outside air can be introduced into the housing, thereby promoting ventilation in a large space. there is.

In addition, the outdoor air conditioner is on the outdoor air introduction path and has a supply air filter disposed on the downstream side of the heat exchanger to purify the outdoor air introduced from the inlet, thereby capturing impurities including contaminants contained in the outdoor air introduced into the housing. Fresh outdoor air can always be supplied to a large space.

In addition, the exhaust is composed of a floor exhaust hole formed at a predetermined position in the floor portion, a wall exhaust hole formed at a predetermined position in the lower wall portion and communicating with the outdoors, and an exhaust induction path communicating from the floor exhaust hole to the wall exhaust hole. By providing a section, the outside air supplied from the outside air conditioner circulates through a large space and is then exhausted from the floor exhaust hole. And, the outdoor air exhausted from the floor exhaust hole is exhausted to the outdoors through the wall exhaust hole through the exhaust induction path. Additionally, it is also possible to use a type 1 ventilation system that forcibly exhausts air by installing an exhaust blower at a predetermined position in the exhaust section.

Here, many facilities with large spaces have a floor space, but moisture accumulates in this floor space, causing expansion or contraction of the floor area. In this regard, by forming an exhaust induction path that communicates from the floor exhaust hole to the wall exhaust hole, ventilation in the space under the floor is secured and moisture is prevented from accumulating in the space under the floor.

In order to achieve the above object, the ventilation method of the present invention is a ventilation method in a facility where a large space is formed, which has a ventilation structure in which the upper space and the lower space are continuous, and is surrounded by a floor portion, a ceiling portion, and a wall portion, wherein the heat source A process of circulating a refrigerant from a device through a heat medium circuit, and passing outside air introduced from an inlet of an outside air conditioner installed at a predetermined position in the upper layer and having a heat exchange device installed on a path of the heat medium circuit, passing through the heat exchanger. A process of supplying air from a supply port toward the large-scale space, exhausting the air from the large-scale space through a floor exhaust hole formed at a predetermined position in the floor portion, and exhausting the air discharged from the floor exhaust hole. It includes a step of exhausting air from a wall exhaust hole communicating with the outdoors formed at a predetermined position in the wall portion of the lower layer through an induction path.

Here, as a ventilation method, a process of circulating the refrigerant from the heat source device through the heat medium circuit is provided, so that the refrigerant passes through the heat exchanger of the outside air conditioner and circulates the heat medium circuit, so that the heat exchanger of the outside air conditioner is cooled or heated. You can.

In addition, by providing a process of supplying outdoor air introduced from the inlet of an outdoor air conditioner installed at a predetermined position in the upper floor and having a heat exchanger installed on the path of the heat medium circuit, through the heat exchanger, and then supplying air from the air supply port toward the large space. , can promote ventilation of large spaces.

Additionally, the outside air introduced from the inlet passes through the heat exchanger, so the outside air introduced into the outside air conditioner exchanges heat with the heat exchanger to be heated or cooled, and the outside air after the heat exchange is supplied from the supply port into the large space. Therefore, for example, when using an air conditioner as a heat source device, the operating time of the air conditioner until the set target temperature of the air conditioner is reached is short, so the operating load of the air conditioner can be reduced. You can.

In addition, by providing a process for exhausting the air in a large space from a floor exhaust hole formed at a predetermined position in the floor portion, the air circulating in a large space can be exhausted from the floor exhaust hole, thereby improving ventilation of the large space. It can be promoted.

In addition, by providing a step of exhausting the air exhausted from the floor exhaust hole through the exhaust induction path from the wall exhaust hole formed at a predetermined position in the wall part of the lower floor and communicating with the outdoors, the exhaust air exhausted from the floor exhaust hole is provided. The exhaust can be exhausted from the wall exhaust hole to the outdoors through the exhaust induction path. Accordingly, the amount of air supply and exhaustion becomes uniform, and ventilation of large spaces is always promoted by exchange of fresh air.

According to the ventilation system and ventilation method of the present invention, a comfortable environment can be realized by efficiently ventilating the user's activity area in an indoor facility with a large space.

1 is a schematic diagram of a facility to which a ventilation system according to an embodiment of the present invention is applied.
Figure 2 is a front perspective view showing the internal structure of an outdoor air conditioner.
Figure 3 is a side view showing the internal structure of the outdoor air conditioner.
Figure 4 is a plan view showing the indoor installation state of the outdoor air conditioner.
Figure 5 is a diagram showing the heat medium circuit of the ventilation system.
Figure 6 is a plan view of a facility to which a ventilation system according to an embodiment of the present invention is applied.

The ventilation system according to an embodiment of the present invention is mainly composed of an outdoor air conditioner that supplies outdoor air to a large space, a heat source device connected to the outdoor air conditioner through a heat medium circuit, and an exhaust unit that exhausts outdoor air supplied to the large space to the outdoors. there is. Hereinafter, each configuration will be described in detail with reference to the drawings.

Figure 1 shows an example of a facility 1 in which the ventilation system of the present invention is installed, and the facility 1 has a large space S mainly composed of a ventilation structure in which the space of the upper floor and the space of the lower floor are continuous. It is a gymnasium having an arena section 11 (lower floor) where sports games, acting, performances, etc. are held, and a stand section 12 (upper floor) that accommodates audiences installed around the arena section 11.

Here, the facility 1 to which the ventilation system of the present invention is applied does not necessarily have to be a gymnasium of the structure shown in FIG. 1, but rather has an upper floor and a lower floor, and the space of the upper floor and the space of the lower floor are continuous. It is not particularly limited as long as it is a facility with a large space consisting of a ventilation structure, and can be applied to, for example, facilities such as dome-shaped stadiums, athletics stadiums, other concert halls, exhibition halls, and martial arts halls.

In the facility 1, a large-scale space S is formed by the floor portion 13, the wall portion 14, and the ceiling portion 15, and the lower floor, the arena portion 11, has the arena portion 11. An inner wall 16 of about 3 to 4 meters in height is provided to surround the electric pole. On the front side of the inner wall 16, a radiant panel 8, which is an air conditioner whose target area is mainly the arena section 11, is installed on the pole of the arena section 11.

The radiant panel 8 has a height from the floor portion 13 to the stand portion 12, which is the upper layer, and has a vertical pipe made of aluminum with excellent thermal conductivity and a diameter of about 6 centimeters running in the horizontal direction. It is an air conditioner that consists of a structure that is continuously erected at intervals, and that coolant sent from an outdoor unit (not shown) circulates inside the air conditioner, enabling heat exchange to be carried out by static heat radiation rather than blowing by a fan or the like.

Here, it is not necessarily necessary to install the radiant panel 8 as an air conditioner in the arena section 11. For example, floor-mounted package air conditioners may be installed at regular intervals along the circumferential direction of the arena section 11. However, by using the radiant panel 8 as the air conditioner of the arena section 11, in the case of playing a game in the arena section 11 where the influence of wind, such as badminton or table tennis, cannot be ignored, static It is preferable to employ a radiant panel 8 that performs heat exchange by heat radiation action.

Above the inner wall 16, a stand 12 is installed as an upper layer, and the stand 12 slopes downward toward the arena 11, allowing the entire arena 11 to be overlooked. It is formed on the stairs so that

A handrail for preventing falls is installed across the front passage 17 in front of the frontmost row of stands 12, and a rear passage 18 is provided at the rear of the stand 12. In this rear passage 18, an outdoor air conditioner 2 for supplying outdoor air to the large space S and a package air conditioner 3, which is an air conditioner mainly targeting the stand section 12, are installed.

The external air conditioner (2) is installed indoors and includes a heat exchanger (22), an air supply filter (23), and an air supply fan (24) within a housing (21). Hereinafter, the detailed structure of the external air conditioner 2 will be described with reference to FIGS. 2 to 4.

Here, the outdoor air conditioner 2 according to the embodiment of the present invention is not necessarily limited to the indoor installation type described in detail below, but is, for example, a type installed on a window frame formed on the upper wall portion 14. , it is assumed that a natural air supply type can be applied without a forced air supply device such as a fan.

The housing 21 is built on a base 27 made of stainless steel installed on the installation surface, has the shape of a roughly square pillar with a length in the vertical direction, and is composed of an insulating panel. On the lower side of one side of the housing 21, there is an inlet 211 for introducing outside air (A), and on the upper side, there is an inlet 214 for supplying outside air (A) introduced from the inlet 211 toward the room. is formed. In addition, the internal structure of the outdoor air conditioner 2 cannot be seen outdoors, but for convenience of explanation, FIGS. 2 and 3 show a state in which the internal structure of the outdoor air conditioner 2 can be seen.

Here, the housing 21 does not necessarily need to be composed of an insulating panel. However, by constructing the housing 21 with an insulating panel, the occurrence of condensation due to the temperature difference between the inside and outside of the housing 21 is prevented, and malfunctions due to condensation in each device stored inside the housing 21 are prevented. can be prevented.

Additionally, the housing 21 does not need to be installed through the base 27 with respect to the installation surface. However, by installing the housing 21 on the foundation 27, the work of adjusting the horizontal position or vertical position with respect to the installation surface of the housing 21 becomes unnecessary, so installation on the installation surface of the housing 21 Easy to work with. In addition, since the horizontal and vertical positions of the housing 21 can be maintained, for example, the air supply fan 24 described later can be properly driven, and condensation water from the heat exchanger 22 can be directed vertically downward. It can be discharged toward .

Additionally, the material of the base 27 does not need to be stainless steel. However, since the base 27 is made of stainless steel, contamination is prevented from adhering to the surface and scratches are less likely to occur, resulting in a good external appearance.

Additionally, the shape of the housing 21 does not necessarily have to be a substantially square pillar. It may be a shape such as a pillar other than a square pillar or a cylinder.

The inlet 211 is connected by a duct 4 and a through hole 5 formed in the wall 14 near the back passage 18 of the upper floor where the outdoor air conditioner 2 is installed, and is always supplied with fresh air. Outside air (A) is introduced into the interior of the housing (21) through the duct (4).

A mesh-shaped inlet filter 25 is installed at the inlet 211. The inlet filter 25 is mainly a filter for capturing substances with relatively large particle sizes, such as bugs and dust, that enter the inside of the housing 21 together with the outside air A.

Here, it is not necessarily necessary to install the inlet filter 25. However, by installing the inlet filter 25, the inside of the housing 21 can always be kept clean in order to exert an insect-proof or dust-proof effect as described above, and the inside of the housing 21 It can prevent malfunctions caused by insects or dust entering various devices installed in the device.

Additionally, as the inlet filter 25, in addition to the purpose of preventing insects and dust, it may also have deodorizing and antibacterial functions by applying a predetermined coating to the filter. Additionally, the net shape and net size of the inlet filter 25 can be appropriately changed depending on the purpose.

Inside the housing 21, an outside air introduction path 216 is formed along the vertical direction of the housing 21 to guide the outside air A introduced from the inlet 211 to the supply opening 214, The intersection angle between the introduction direction of the outside air A from the inlet port 211 and the axial direction of the outside air introduction path 216 is approximately 90 degrees. The outside air introduction passage 216 is divided into a first compartment R1 on the upstream side (inlet 211 side) and a second compartment R2 on the downstream side (inlet 214 side) by means of a partition plate 28. It is partitioned. An opening hole 29 is formed in approximately the center of the partition plate 28, and the first partition R1 and the second partition R2 are in a bidirectional communication state through the opening hole 29. A heat exchanger 22, described later, is installed at a position corresponding to 29 so as to face the first compartment R1.

Here, it is not necessarily necessary to have a partition plate 28. However, by dividing the outside air introduction path 216 into the first compartment R1 and the second compartment R2 by the partition plate 28, the entire amount of outside air A introduced from the inlet port 211 is heat exchanged. After heat exchange by the unit 22, it can be introduced into the second compartment (R2). In addition, the outside air A introduced into the first compartment R1 from the inlet 211 collides with the partition plate 28, so that the flow direction changes, and the outside air A flows into turbulent flow in the first compartment R1. It can be done in this state. The outdoor air A in a turbulent state can further promote heat exchange by the heat exchanger 22 installed in the first compartment R1.

The heat exchanger 22 is capable of exchanging heat with the outside air A introduced through the inlet 211, and includes a heat transfer tube 221 having a meandering shape with alternating straight portions and folded portions, and the heat transfer pipe 221. It is a so-called fin tube type, which consists of a plurality of fins 222 crossing in the radial direction.

The heat exchanger 22 is provided with a known fixing means such as an attachment stay to the partition plate 28 so that the main body consisting of the heat transfer tube 221 and the fin 222 corresponds to the opening hole 29 of the partition plate 28. It is fixed by intervening. In addition, as shown in FIG. 3, the heat exchanger 22 is positioned at an angle of approximately 65 degrees (with respect to the horizontal axis) on the inlet 211 side with respect to the vertical axis direction of the housing 21 (the axial direction of the outside air introduction path 216). It is fixed inside the housing 21 to have an inclination angle of approximately 25 degrees.

Here, the heat exchanger 22 does not necessarily need to be fixed so that the main body including the heat transfer tube 221 and the fins 222 corresponds to the opening hole 29 of the partition plate 28. However, by installing the main body of the heat exchanger 22 to correspond to the opening hole 29 of the partition plate 28, the outside air A heat-exchanged in the heat exchanger 22 passes through the opening formed in the main body through the opening hole ( 29) Since it can be introduced into the second compartment (R2), the efficiency of inflow of outdoor air (A) from the first compartment (R1) to the second compartment (R2) can be increased.

Additionally, the heat exchanger 22 does not necessarily need to be installed on the first compartment R1 side. However, by installing the heat exchanger 22 on the first compartment R1 side, the entire amount of outside air A can be heat exchanged with the heat exchanger 22, and the condensation water dripping from the heat exchanger 22 can be reduced. Since all of the water is dropped into the water receiving portion 261, which will be described later, condensation water does not collect inside the housing 21, and defects in the internal equipment caused by condensation water can be prevented in advance.

Additionally, the heat exchanger 22 does not necessarily need to be installed to have a predetermined inclination angle with respect to the vertical axis direction of the housing 21. However, by installing the heat exchanger 22 to have a predetermined inclination angle with respect to the vertical axis direction of the housing 21, the heat exchanger 22 can be installed in a limited space, thereby preventing the housing 21 from being enlarged. .

In addition, by installing the heat exchanger 22 at a predetermined inclination angle, the effect of a rectifying action can be exerted to guide the outside air A introduced from the inlet 211 into a vertically upward flow within the housing 21. there is. Additionally, during cooling operation of the package air conditioner 3, condensation water adhering to the heat exchanger 22 can be smoothly drained according to the inclination of the fins of the heat exchanger 22. As a result, it is possible to prevent the air flow section of the heat exchanger 22 from being narrowed due to stagnation due to the surface tension of condensation water or water droplets, thereby preventing the air flow from becoming stagnant.

Additionally, the installation angle with respect to the vertical axis direction of the heat exchanger 22 is not necessarily limited to approximately 65 degrees on the inlet 211 side. It is sufficient to allow the entire amount of outside air (A) introduced through the inlet 211 to pass through the heat exchanger 22 efficiently. It can be changed appropriately within the range of inclination angle.

The heat exchanger 22 has a first entrance pipe 223 and a second entrance pipe 224 connected to the heat transfer pipe 221. The ends of the first entrance pipe 223 and the second entrance pipe 224 protrude to the outdoors of the housing 21, and are connected to the second refrigerant pipe (33) of the heat medium circuit 33 connected to the package air conditioner 3 through a joint. 332), and connection to and separation from the third refrigerant pipe 333 is possible.

With the above configuration, the heat exchanger 22 can circulate the refrigerant supplied from the outdoor unit 32 of the package air conditioner 3 via the heat medium circuit 33 and perform heat exchange with the outside air A. It becomes. The supply of this refrigerant starts when the package air conditioner 3 starts operating and stops when the package air conditioner 3 stops operating. That is, the heat exchanger 22 has a structure that does not require a separate power source because its operation is linked to the operation of the package air conditioner 3.

Therefore, for example, when the package air conditioner 3 is in cooling operation, the outside air A introduced from the inlet 211 of the outside air conditioner 2 is brought to a predetermined temperature by the heat exchanger 22. It is cooled, and the cooled outdoor air A is supplied from the air supply port 214. Accordingly, the operating time of the package air conditioner (3) is shortened until the set target temperature of the package air conditioner (3) is reached, thereby reducing the operating load of the package air conditioner (3).

In addition, when the package air conditioner 3 is in heating operation, the outside air A introduced from the inlet 211 of the outside air conditioner 2 is heated to a predetermined temperature by the heat exchanger 22, The outside air (A) after heating is supplied from the supply air tank (214). Therefore, as in the case of cooling operation, the operation time of the package air conditioner 3 until the set target temperature of the package air conditioner 3 is reached is shortened, and the operating load of the package air conditioner 3 can be reduced.

Additionally, when the package air conditioner 3 is stopped, the outside air A is not cooled or heated in the heat exchanger 22 but is supplied from the air supply port 22. As described above, the outside air A supplied from the outside air conditioner 2 is controlled to an appropriate temperature according to the operation mode of the package air conditioner 3 before being supplied to the large space S. It becomes possible to always maintain the temperature at a constant temperature.

The air supply filter 23 is a filter device for capturing pollutants (pollen or PM2.5) contained in the outdoor air introduced through the inlet 211 and purifying the outdoor air. Like the heat exchanger 22, the air supply filter 23 also has a predetermined inclination angle (in the embodiment of the present invention) on the inlet 211 side with respect to the vertical axis direction of the housing 21 (the axial direction of the outside air introduction path). Approximately 45 degrees), it is on the downstream side of the heat exchanger 22 and is installed in the second compartment R2.

Here, the air supply filter 23 does not necessarily need to be installed at a predetermined inclination angle with respect to the vertical axis direction of the housing 21. However, by installing the air supply filter 23 at a predetermined inclination angle with respect to the vertical axis direction of the housing 21, the air supply filter 23 can be installed within a limited space, thereby preventing the housing 21 from being enlarged. .

In addition, the installation angle with respect to the vertical axis direction of the air supply filter 23 is not necessarily limited to approximately 45 degrees on the inlet 211 side, and the air introduced from the inlet 211 and passing through the heat exchanger 22 It is sufficient to allow the entire amount of outside air (A) to pass through the air supply filter 23 efficiently. For example, an inclination angle in the range of approximately 30 degrees to 60 degrees on the inlet 211 side with respect to the vertical axis direction of the housing 21 You can change it appropriately.

The inlet filter 25 is a filter aimed at capturing relatively large particle size substances (insects and dust) contained in the outdoor air A, but the air supply filter 23 is an inlet filter 25. Since the purpose is to capture undetectable particulates, the mesh size of the filter is smaller than that of the inlet filter 25.

An air supply chamber 212 is formed at the top of the housing 21 by a ceiling plate 213. A communication hole (not marked) is formed in the ceiling plate 213, and the area between the outside air introduction path 216 and the air supply chamber 212 is in a state where outside air A can communicate. In addition, on the side of the air supply chamber 212, supply openings 214 for blowing outside air A toward the room are formed at a total of three locations on the front side and the left and right side sides of the housing 21. ) The outside air (A) introduced into the air can be supplied in three directions from the related air supply port 214. Additionally, a plurality of wind deflectors 215 are installed at the air supply port 214 at predetermined intervals.

Here, it is not necessarily necessary to install the wind direction plate 215. However, by installing the wind deflector 215, the directivity of the outside air (A) at the time of air supply can be increased, so that the outside air (A) can easily pass through the entire large space (S), making it possible to ventilate the room in a short time. .

In the air supply chamber 212, an air supply fan 24 is installed to generate airflow from the inlet 211 to the air supply port 214 along the outside air introduction path 216. The air supply fan 24 includes a fan blade 243, a motor (not shown) for driving the fan blade 243, a main body 241 in which the fan blade 243 and the motor are stored, and a main body 241. It consists of a nozzle 244 pointed at.

The fan blade 243 is configured so that, for example, the sirocco fan, the wind tunnel surrounding the sirocco fan, and the casing can each be divided, so that replacement of the sirocco fan that requires regular replacement can be easily performed. there is.

The main body 241 of the air supply fan 24 is embedded from the ceiling surface of the housing 21 by a fixing bracket 242, and a switch for supplying power to the motor and a controller for setting the rotation speed of the motor are connected. It is done. When the switch is operated and the power is turned on, the motor rotates at the rotation speed set by the controller 246, thereby driving the fan blade 243 connected to the motor.

By rotating the fan blade 243, an airflow is generated in the housing 21 from the inlet 211 toward the air supply port 214 in the direction indicated by the arrow in FIG. As a result, a large amount of outside air A can be guided from the inlet 211 to the outside air introduction path 216, and the outside air A can be supplied from the supply port 214 toward the room. Therefore, indoor air can be exchanged in a short time.

The rotation speed of the motor is set at approximately 2200 to 2300 rpm during normal operation, but it is not limited to this and is set to the area of the room where the outside air conditioner 2 is installed, and the outside air conditioner (2) relative to the area of the room. Based on the number of installation units in 2), etc., it can be changed appropriately to obtain the required ventilation amount.

A drain portion 26 is provided vertically below the heat exchanger 22 to receive condensation water generated in the heat exchanger 22 and discharge it to the outside of the outside air conditioner 2. The drain portion 26 includes a water receiving portion 261 that receives condensation water dripping from the heat exchanger 22, a trap portion 263 for storing condensation water dripping into the water receiving portion 261, and a water receiving portion ( It consists of a drainage channel 262 for leading from 261) to the trap part 263.

The water receiving portion 261 forms a drain hole 264 communicating with the drain 262 at a predetermined position, and forms an inclined surface with a predetermined inclination angle toward the drain hole 264. Accordingly, all condensation water dripping into the water receiving portion 261 is drained from the drain hole 264 to the drain 262 through the slope.

The trap portion 263 is installed on the side of the housing 21, and has a predetermined volume for temporarily storing condensation water drained through the drainage channel 262. The trap portion 263 has an operation portion that allows the discharge hole (not shown) to be opened and closed by, for example, a pressing operation. When a certain amount of condensation water is stored in the trap portion 263, the operator operates the operation portion to remove the condensation water. It is becoming possible to vent out of the atmosphere.

In addition, one of the sides of the housing has a door structure that can be opened and closed, and during maintenance of the outdoor air conditioner 2, the related door can be opened to facilitate repair of the device inside or exchange of parts. .

In addition, when installing the outdoor air conditioner 2 in the rear passage 18, it may be connected to a fixture 6 such as a pillar with a connecting member 7, as shown in FIG. 4. By connecting to the fixture with the connecting member 7 in this way, the outside air conditioner 2 is firmly fixed, and safety can be ensured by preventing the outside air conditioner 2 from falling in the event of an earthquake.

The package air conditioner 3 has an indoor unit 31 installed in the back passage 18 of the stand unit 12 and an outdoor unit 32 installed outdoors, and the indoor unit 31 and the outdoor unit 32 are connected to the heat medium circuit 33. is connected by. As shown in FIG. 5, the heat medium circuit 33 is composed of a first refrigerant circuit 331, a second refrigerant circuit 332, and a third refrigerant circuit 333, and includes an outdoor unit 32 and an indoor unit 31. ) is directly connected by the first refrigerant circuit. In addition, as described above, the indoor unit 31 and the outdoor air conditioner 2 are connected by the second refrigerant pipe 332, and the outdoor air conditioner 2 and the outdoor unit 32 are connected to the third refrigerant circuit 333. is connected by.

Here, the package air conditioner 3 does not necessarily need to be composed of an indoor unit 31 and an outdoor unit 32. The package air conditioner 3 just needs to have the heat medium circuit 33. For example, a package air conditioner without the outdoor unit 32 can also be installed.

Additionally, the heat exchanger 22 of the external air conditioner 2 is not necessarily connected to the heat medium circuit 33 of the package air conditioner 3. For example, it may be connected to a heat medium circuit of the radiation panel 8 (not shown), or may be connected to a heat medium circuit of a separately installed cooling water circulation device. As mentioned above, the heat source device connected to the heat exchanger 22 is not particularly limited.

Next, the configuration of the exhaust section 9 will be described. The exhaust unit 9 is composed of a floor exhaust hole 91, a wall exhaust hole 92, and an exhaust guide path 93. First, floor exhaust holes 91 are formed at equal intervals along the inner wall 16 in the floor portion 13 of the facility 1. Additionally, wall exhaust holes 92 communicating with the outdoors are formed in the wall portion 14 corresponding to the number of floor exhaust holes 91. In addition, the floor exhaust hole 91 and the wall exhaust hole 92 are in communication through the exhaust induction path 93, and the large space S flowing into the floor exhaust hole 91 is an exhaust induction passage. The air is forcibly exhausted from the wall exhaust hole 92 to the outdoors of the facility 1 through the exhaust blower 94 installed in the furnace 93.

As described above, in the embodiment of the present invention, the outside air (A) is forcibly supplied to the large-scale space (S) by the outside air conditioner (2), and the outside air (A) supplied to the large-scale space (S) is exhausted. A type 1 ventilation system in which the air is forcibly discharged to the outdoors by a blower 94 is adopted.

Here, the exhaust blower 94 does not necessarily need to be installed in the exhaust induction path 93 as the installation location. For example, it may be installed in either the floor exhaust hole 91 or the wall exhaust hole 92 at a predetermined location.

In addition, it is not necessarily necessary to install an exhaust blower 94 in the exhaust section 9, and a type 2 ventilation system in which the air supply side is forcibly supplied with air by the outside air conditioner 2 and the exhaust side is naturally exhausted. You may also adopt .

Next, the layout within the facility 1 of the ventilation system will be explained based on the plan view of the facility 1 shown in FIG. 6. When the outdoor air conditioner 2 and the package air conditioner 3 are used as one set of air supply units, as shown in FIG. 6, the air supply units are spaced at predetermined equal intervals along the rear passage 18 of the stand portion 12. It is installed multiple times. At this time, the positional relationship between the floor exhaust hole 91 formed along the bottom surface portion 13 of the arena unit 11 and the air supply unit is such that the bottom exhaust hole 91 is located on the center line of the adjacent air supply unit. It is done.

Here, the positional relationship between the air supply unit and the floor exhaust hole 91 does not necessarily have to be the layout described above. However, by arranging the floor exhaust hole 91 on the center line of the adjacent air supply unit when viewed from the top, the outside air A supplied from the outside air conditioner 2 can be most efficiently exhausted from the floor exhaust hole 91. there is.

In the facility 1 to which the ventilation system configured as above is applied, the air flow in the large space S will be explained based on FIGS. 1 and 6. First, outside air A is supplied toward the arena section 11 from the outside air conditioner 2 installed in the back passage 18 of the stand section 12, which is the upper floor. At this time, the temperature and humidity of the outside air A are adjusted by passing through the heat exchanger 22 of the outside air conditioner 2. And the outside air (A) is divided into a horizontal flow directed toward the upper space of the stand portion 12 and an inclined downward flow directed toward the floor exhaust hole 91 along the stand portion 12 due to the diffusion effect. . Among these, the diagonally downward flow along the stand portion 12 is quickly exhausted outdoors through the floor exhaust hole 91 along with contaminants including, for example, exhaled air generated in the stand portion 11.

In addition, when the outdoor air conditioners 2 are installed in positions facing each other, among the flows of outdoor air A supplied from each outdoor air conditioner 2, the horizontal flows F1 and F2 are in the scale space. It collides approximately near the center of (S). After that, the outside air A changes vertically downward, and the outside air A that reaches the floor portion 13 flows toward the floor exhaust hole 91 due to the negative pressure effect of the exhaust blower 94. is formed At this time, the pollutants generated in the arena unit 11 are combined with the outdoor air A flowing from the upper floor and are quickly exhausted outdoors through the floor exhaust hole 91.

In this way, a symmetrical circular flow is formed around the center of the large-scale space (S). By this circulating flow, contaminants in the arena section 11 are quickly exhausted to the outdoors, while fresh outdoor air A is always supplied from the outdoor air conditioner 2. Accordingly, the average value of the concentration of pollutants in the large space S is suppressed to a low value.

In addition, the air containing contaminants including the exhaled air of the arena section 11 is always supplied by fresh air downward hydraulically from the top of the arena section 11 toward the bottom surface section 13, resulting in instantaneous uniform diffusion. Taking advantage of the action effect, the air flows toward the floor exhaust hole 91, which suppresses the floating of micro droplets etc. when using the arena section 11, and is a measure to prevent infection in the large space S. becomes an effective ventilation system.

As described above, the ventilation device and ventilation method according to the present invention can realize a comfortable environment by efficiently ventilating the user's activity area in an indoor facility with a large space.

1 facility
11 Arena
12 Stand section
13 Bottom part
14 Wall section
15 Ceiling area
16 Internal wall
17 front aisle
18 Back passage
2 Outdoor air conditioner
21 housing
211 entrance
212 air supply room
213 ceiling plate
214 water supply port
215 Weatherboard
216 External air introduction route
217 smoke pipe
22 heat exchanger
221 heat pipe
222 pin
223 Primary Entrance Hall
224 Secondary Entrance
23 Supply air filter
24 Supply fan
241 main body
242 Fixing bracket
243 fan blade
244 nozzle
25 Inlet filter
26 drain part
261 water receiving part
262 ditch
263 Trap Department
264 water hole
27 Foundation
28 Partition board
29 opening hole
3 package air conditioner
31 indoor unit
32 Outdoor unit
33 Heat medium circuit
331 Primary refrigerant piping
332 Second refrigerant piping
333 Third refrigerant piping
4 duct
5 through holes
6 fixture
7 Connection member
8 Replicable panels
9 exhaust part
91 floor exhaust hole
92 wall exhaust hole
93 exhaust induction furnace
94 Exhaust blower

Claims (8)

It is a ventilation system installed in a facility with a ventilation structure in which the space on the upper floor and the space on the lower floor are continuous, and a large space is formed surrounded by the floor, ceiling, and wall,
A heat source device having a heat medium circuit through which a refrigerant circulates,
A housing installed at a predetermined position on the upper floor, and having an outside air introduction passage leading to a supply port that supplies outside air introduced from an inlet into the large space, and installed on a path of the heat medium circuit to supply outside air introduced from the inlet. An outdoor air conditioner having a heat exchanger for cooling or heating,
A floor exhaust hole formed at a predetermined position in the floor surface portion, a wall exhaust hole formed at a predetermined position in the wall portion of the lower floor and communicating with the outdoors, and an exhaust exhaust hole communicating from the floor exhaust hole to the wall exhaust hole. A ventilation system with an exhaust section consisting of a furnace. According to paragraph 1,
The heat source device is an air conditioner installed on the upper floor and targeting a predetermined area of the upper floor as an air conditioner,
A ventilation system in which the outside air conditioner and the air conditioner are a series of air supply units, and the air supply units are arranged side by side at predetermined intervals. According to paragraph 2,
A ventilation system wherein the floor exhaust hole is located on the center line of the adjacent air supply unit when viewed from the plane of the large space. According to paragraph 2 or 3,
The air conditioner has an indoor unit and an outdoor unit connected by the heat medium circuit,
The heat medium circuit is,
a first refrigerant pipe that supplies refrigerant from the outdoor unit to the indoor unit;
a second refrigerant pipe that supplies refrigerant from the indoor unit to the outdoor air conditioner;
A ventilation system including a third refrigerant pipe that sends refrigerant from the outdoor air conditioner to the outdoor unit. According to any one of claims 1 to 4,
In the lower floor, an arena section including the floor portion is formed, and a radiant panel targeting the arena section for air conditioning is installed,
The ventilation system wherein the radiant panel has a height from the floor portion to the upper floor, and is installed on an electric pole of the wall portion. According to any one of claims 1 to 5,
The upper layer is a step-shaped stand portion that slopes downward from the wall portion on the back side toward the front side,
A front passage is formed on the front side of the stand and a rear passage is formed on the rear side,
The outdoor air conditioner is a ventilation system installed in the rear passage. It is a ventilation system installed in a facility with a ventilation structure in which the space on the upper floor and the space on the lower floor are continuous, and a large space is formed surrounded by the floor, ceiling, and wall,
A heat source device having a heat medium circuit through which a refrigerant circulates,
A housing installed on the upper floor, having a duct connected to an air supply hole formed at a predetermined position on a wall of the upper floor, and an outside air introduction passage leading to a supply cylinder that supplies outside air introduced from the duct to an inlet into the large space, A heat exchanger installed on the path of the heat medium circuit to cool or heat the outside air introduced from the inlet, an air supply fan disposed in the air supply chamber where the supply port is formed and generating an airflow from the inlet to the supply port, an outdoor air conditioner disposed on the outdoor air introduction path and downstream of the heat exchanger and having a supply air filter for purifying the outdoor air introduced through the inlet;
A floor exhaust hole formed at a predetermined position in the floor surface portion, a wall exhaust hole formed at a predetermined position in the wall portion of the lower floor and communicating with the outdoors, and an exhaust exhaust hole communicating from the floor exhaust hole to the wall exhaust hole. A ventilation system with an exhaust section consisting of a furnace. A ventilation method in a facility in which a large-scale space is formed in which the space of the upper floor and the space of the lower floor are continuous and surrounded by the floor, ceiling, and wall, comprising:
A process of circulating refrigerant from a heat source device through a heat medium circuit,
A process of passing outdoor air introduced from an inlet of an outdoor air conditioner installed at a predetermined position in the upper layer and having a heat exchanger installed on a path of the heat medium circuit, through the heat exchanger, and then supplying air from the air supply port toward the large space;
A process of exhausting the air in the large-scale space through a floor exhaust hole formed at a predetermined position in the floor portion;
A ventilation method comprising a step of exhausting the air exhausted from the floor exhaust hole through an exhaust induction path from a wall exhaust hole formed at a predetermined position in the wall portion of the lower floor and communicating with the outdoors.