Ventilation system

Abstract

The present invention provides a ventilation system and a ventilation method thereof, which can efficiently ventilate the activity area of ​​users in an indoor facility with a large space to achieve a comfortable environment. The present invention discloses a ventilation system provided in a facility with a large space, comprising: an integral air conditioner 3 having a heat medium circuit 33 for circulating a refrigerant, an external air conditioner 2 having a heat exchanger 22 assembled in the heat medium circuit 33, and an exhaust section 9 for exhausting the external air A that circulates inside the facility 1 to the outside. The integral air conditioner 3 and the external air conditioner 2 are provided on the upper floor, and the exhaust section 9 is provided on the lower floor. The external air A introduced from the external air conditioner 2 provided on the upper floor is exhausted to the outside through the exhaust section 9 after circulating in the large space S, so that the large space S can always be ventilated with fresh air.

Description

Technical Field

[0001] The present invention relates to a ventilation system and a ventilation method thereof, and in particular to a ventilation system and a ventilation method thereof for efficiently ventilating the activity area of ​​users in a large indoor facility to achieve a comfortable environment. Background Art

[0002] In recent years, the trend of buildings is towards high airtightness and high insulation. Therefore, if ventilation is not sufficient, the concentration of carbon dioxide will increase, especially in newly built buildings. The concentration of formaldehyde and volatile organic compounds (VOC: Vapor OrganciComposition) will be high. In addition, due to insufficient ventilation, the humidity will increase, which will breed mold and mites, which will become the cause of allergies.

[0003] In buildings, large indoor facilities such as gymnasiums are not only places for various sports competitions, but also play an important role as emergency shelters for local residents during extraordinary disasters. In recent years, as a measure to prevent infection with the new coronavirus, it is recommended to regularly introduce outside air into living spaces and avoid confined spaces with poor ventilation as much as possible. In order to solve the air pollution in such confined spaces, a 24-hour ventilation system is used to continuously ventilate a certain amount of air in the entire building for 24 hours.

[0004] The ventilation system used in large space facilities adopts the natural ventilation method, which is to introduce external air from the ventilation windows formed on the second floor, and exhaust the internal air that has circulated in the large space to the outside through the ventilation windows formed on the first floor.

[0005] On the other hand, many forced ventilation systems using mechanical ventilation have been proposed for the purpose of promoting ventilation of large spaces. In a ventilation system using mechanical ventilation, after the outside air is forcibly introduced into the room by an air supply blower, it is exhausted to the outside in the following three ventilation methods. The first is to exhaust the inside air to the outside by an exhaust blower; the second is to exhaust the outside air forcibly supplied by the air supply blower naturally; the third is to exhaust the outside air supplied to a large space by natural air supply by an exhaust blower.

[0006] For example, Patent No. 1 discloses a ventilation system that adopts the first ventilation method in order to improve the efficiency of air conditioning in a large space. Specifically, an air supply blower for introducing external air is installed at a height near the floor of the large space to be conditioned, and an exhaust blower for exhausting air to the outside is installed on the wall of the large space at a height of more than 50% of the distance to the ceiling.

[0007] The above-mentioned structure can exhaust the hot air that has been heated by the sun and is trapped near the ceiling to the outside through the exhaust blower while it is gradually descending, thereby preventing the hot air from descending to the floor of the large space. As a result, the temperature rise in the activity area of ​​the users who are active indoors can be suppressed, and the outside air can be introduced into the lower part of the large space through the air supply blower, thereby promoting ventilation in the activity area.

[0008] Patent document 1: Japanese Patent Publication No. 2019-070480 Summary of the invention

[0009] Technical Problems to be Solved by the Invention

[0010] According to Patent Document 1, the exhaust blower can be arranged at any position to promote ventilation of a large space and improve the efficiency of air conditioning. On the one hand, in the ventilation system of Patent Document 1, since the outside air will enter the room intact through the air supply blower, for example, in winter when the outside temperature is low, the low-temperature outside air will enter the room intact.

[0011] Furthermore, since the air supply blower is installed near the floor of the indoor facility, the low-temperature outside air flowing into the room does not rise to the roof, but stays near the floor which is the user's activity area. As a result, the temperature drops and the ventilation is uneven in the activity area, which may deteriorate the activity environment for the user.

[0012] To solve the above problem, when an air conditioner is operated to air condition a large space, if the outside air which is always at a low temperature flows into the room through the air supply blower, the operating load of the air conditioner increases and it takes a long time to raise the temperature of the large space to the target temperature.

[0013] The present invention is an invention made in view of the above points, and provides a ventilation system and a ventilation method thereof, which can efficiently ventilate the activity area of ​​users in indoor facilities including a large space to achieve a comfortable environment.

[0014] Technical solutions to technical problems

[0015] In order to achieve the above object, the ventilation system of the present invention is suitable for use in facilities having a large space, wherein the large space is a structure in which air is continuously blown from an upper space and a lower space, and is surrounded by a floor portion, a roof portion, and a wall portion, and comprises:

[0016] A heat source device including a heat medium circuit in which a refrigerant circulates;

[0017] The external air conditioner includes a box body and a heat exchanger, wherein the box body is arranged at a preset position of the upper layer, and an external air introduction channel is formed on the box body, the external air introduction channel leads to an air supply port, and the air supply port supplies the external air introduced from the introduction port to the large space, and the heat exchanger is arranged on the path of the heat medium circuit to cool or heat the external air introduced from the introduction port;

[0018] The exhaust part includes a floor exhaust hole formed at a preset position of the floor part, a wall exhaust hole arranged at a preset position of the lower wall part and connected to the outside of the house, and an exhaust guide channel connected from the floor exhaust hole to the wall exhaust hole.

[0019] Here, a heat source device including a heat medium circuit in which a refrigerant circulates, such as an air conditioner as a heat source device and a heat medium circuit of a cooling water circulation device (including a refrigerant such as Freon gas or alternative gas, warm water or cold water, gas for heating or cooling, etc.), is embedded with a heat exchanger of an external air conditioner to be described later, so that the external air introduced into the external air conditioner can be supplied to a large space after heat exchange.

[0020] Furthermore, an external air conditioner is included, which includes a housing and a heat exchanger, the housing is arranged at a preset position of the upper layer, and an external air introduction channel is formed on the housing, the external air introduction channel leads to the air supply port, the air supply port supplies the external air introduced from the introduction port to the large space, and the heat exchanger is arranged on the path of the heat medium circuit, and cools or heats the external air introduced from the introduction port, which can promote the ventilation of the external air to the large space. Furthermore, by embedding the heat exchanger in the heat medium circuit of the heat source device, the external air introduced by the external air conditioner is heat exchanged according to the operation of the heat source device and the heat medium supplied in linkage, and the external air after the heat exchange can be supplied to the large space, so that the temperature of the large space can be maintained at a suitable temperature.

[0021] Furthermore, when the external air conditioner adjusts the temperature of the outside air to supply air to the large space, a difference will occur between the temperature (humidity) of the outside air and the temperature (humidity) inside the large space. Therefore, the circulation of the external air in the entire large space can be achieved through the instantaneous diffusion effect.

[0022] Furthermore, it includes an exhaust section, which includes a floor exhaust hole formed at a preset position of the floor section, a wall exhaust hole arranged at a preset position of the lower wall section and connected to the outside, and an exhaust guide passage connected from the floor exhaust hole to the wall exhaust hole, and the outside air supplied from the external air conditioner circulates in the large space and is exhausted from the floor exhaust hole. Furthermore, the outside air exhausted from the floor exhaust hole is exhausted to the outside through the wall exhaust hole through the exhaust guide passage. In addition, an exhaust blower is arranged at a preset position of the exhaust section, and the first ventilation method of forced exhaust is also possible.

[0023] Here, many facilities including large spaces have underground spaces, and moisture trapped in the underground spaces causes the floor to expand or contract. In this regard, forming a discharge guide passage connected from the floor exhaust hole to the wall exhaust hole can ensure the air circulation in the underground space and prevent moisture from being trapped in the underground space.

[0024] Furthermore, in the case where the heat source device is arranged on the upper layer and the preset area of ​​the upper layer is taken as the target of the air conditioner, the preset temperature of the large space can be maintained by the air conditioner. Furthermore, as mentioned above, the external air supplied from the external air conditioner is cooled or heated to the preset temperature through heat exchange and then supplied to the large space, so that the operation time of the air conditioner until the target temperature set by the air conditioner is shortened, and the operation load of the air conditioner can be reduced. Furthermore, in the case where the external air conditioner and the air conditioner are used as a group of air supply units, and the air supply units are arranged side by side at a preset distance, by setting a plurality of air supply units corresponding to the size of the large space, the appropriate temperature of the large space can be maintained, and ventilation can be performed in a short time. Furthermore, the external air conditioner and the air conditioner are arranged adjacent to each other, so that the external air conditioner can be simply embedded in the heat medium circuit of the air conditioner.

[0025] Furthermore, the floor exhaust holes are located on the center lines of the adjacent air supply units in the top view of the large space, so that the external air circulating in the entire large space can be exhausted to the outside with maximum efficiency, thereby improving the ventilation efficiency.

[0026] Furthermore, the air conditioner includes an indoor unit and an outdoor unit connected to the heat medium circuit.

[0027] The heat medium circuit comprises:

[0028] a first refrigerant pipe for conveying refrigerant from the outdoor unit to the indoor unit;

[0029] a second refrigerant pipe for conveying refrigerant from the indoor unit to the outside air conditioner;

[0030] In the case of the third refrigerant pipe for conveying the refrigerant from the external air conditioner to the outdoor unit, the air conditioner and the external air conditioner can be integrated with each other by a simple piping structure.

[0031] Through the above structure, when the cooling device is first operated, the refrigerant converted into a low-temperature liquid by the pressure reducer of the outdoor unit is transported to the indoor unit through the first refrigerant pipe to cool the heat exchanger of the indoor unit. Then, a part of the refrigerant of the heat exchanger of the indoor unit is transported to the external air conditioner through the second refrigerant pipe to cool the heat exchanger of the external air conditioner. After that, the refrigerant returns to the outdoor unit again through the third refrigerant pipe, and is converted into a low-temperature liquid by the pressure reducer and then transported to the first refrigerant pipe. By repeating this cycle, the heat exchangers of the indoor unit and the external air conditioner are effectively cooled, and while promoting ventilation in a large space, the indoor temperature of the large space can be kept at the target temperature.

[0032] On the other hand, when the heating equipment is operated, the cycle is opposite to that of the above-mentioned operation of the cooling equipment. That is, the refrigerant converted into high-temperature gas by the outdoor unit is transported to the external air conditioner through the third refrigerant pipe, and the heat of the refrigerant heats the heat exchanger of the external air conditioner. Furthermore, the refrigerant is transported to the indoor unit through the second refrigerant pipe, and after heating the heat exchanger of the indoor unit, it returns to the outdoor unit again through the first refrigerant pipe, and is converted into high-temperature gas by the pressure reducer and then transported to the third refrigerant pipe. By repeating this cycle, the heat exchangers of the indoor unit and the external air conditioner are effectively heated, and while promoting ventilation in a large space, the indoor temperature of the large space can be kept at the target temperature.

[0033] In addition, an amphitheater portion including a floor portion is formed on the lower layer, and a radiation panel is provided to air condition the amphitheater portion.

[0034] When the radiant panels are set at a height from the floor to the upper floor and are disposed on the entire periphery of the floor, the amphitheater, which is an activity area for users of the facility, can always maintain a comfortable temperature.

[0035] Furthermore, the radiant panel portion generates air supply, so that, for example, games that are easily affected by the air supply in the circular arena portion (such as badminton or table tennis, etc.) will not be affected by the air supply, and the overall comfortable temperature of the circular arena portion can be maintained.

[0036] Furthermore, the upper layer is a stepped base portion, which is inclined downward from the wall portion on the back side toward the front side, and a front channel is formed on the front side of the base portion, and a back channel is formed on the back side. When an external air conditioner is arranged on the back channel, external air can be supplied from the back channel toward the front side, so that external air can be circulated in the large space as a whole.

[0037] In order to achieve the above-mentioned object, the ventilation system of the present invention is arranged in a facility having a large space, the large space being a structure in which air is continuously blown by an upper space and a lower space, and being surrounded by a floor portion, a roof portion and a wall portion, and comprising:

[0038] A heat source device including a heat medium circuit in which a refrigerant circulates;

[0039] The external air conditioner includes a ventilation duct, a housing, a heat exchanger, an air supply fan and an air supply filter.

[0040] The ventilation pipe is arranged on the upper layer and connected to the air supply hole formed at a preset position of the wall surface of the upper layer.

[0041] An external air introduction channel is formed on the box body, and the external air introduction channel leads to the air supply port, and the air supply port supplies the external air introduced from the ventilation pipe to the large space.

[0042] The heat exchanger is installed on the path of the heat medium circuit and cools or heats the external air introduced from the inlet.

[0043] The air supply fan is disposed in an air supply chamber formed with an air supply port, and generates an air flow from the introduction port toward the air supply port.

[0044] The air supply filter is located on the external air introduction path, is arranged on the downstream side of the heat exchanger, and purifies the external air introduced from the introduction port;

[0045] The exhaust part includes a floor exhaust hole formed at a preset position of the floor part, a wall exhaust hole arranged at a preset position of the lower wall part and connected to the outside of the house, and an exhaust guide channel connected from the floor exhaust hole to the wall exhaust hole.

[0046] Here, a heat source device including a heat medium circuit in which a refrigerant circulates, such as an air conditioner as a heat source device or a heat medium circuit of a cooling water circulation device, has a heat exchanger of an external air conditioner described later embedded therein, so that the external air introduced into the external air conditioner can be supplied to a large space after heat exchange.

[0047] Furthermore, since an external air conditioner is provided on the upper floor, the external air introduced into the external air conditioner is supplied to the large space, thereby promoting ventilation in the large space.

[0048] In addition, the external air conditioner includes a ventilation duct and a box body. The ventilation duct is arranged on the upper layer and is connected to the air supply hole formed at a preset position on the wall portion of the upper layer. An external air introduction channel is formed on the box body. The external air introduction channel leads to the air supply port. The air supply port supplies the external air introduced from the ventilation duct to the large space. The external air can be introduced into the box body of the external air conditioner through the ventilation duct connected to the wall surface of the large space facility.

[0049] In addition, the external air conditioner includes a heat exchanger, which is arranged on the path of the heat medium circuit and cools or heats the external air introduced from the inlet. Through the operation of the heat source device and the heat medium supplied by the linkage, the external air introduced by the external air conditioner can be heat exchanged, and the external air after the heat exchange can be supplied to the large space, so the temperature of the large space can be maintained at an appropriate temperature.

[0050] Furthermore, the external air conditioner includes an air supply fan which is arranged in an air supply chamber having an air supply port and generates an air flow from the inlet port toward the air supply port, thereby introducing more external air into the cabinet and promoting ventilation in a large space.

[0051] In addition, the external air conditioner includes an air supply filter, which is located on the external air inlet passage, arranged on the downstream side of the heat exchanger, and purifies the external air introduced from the inlet port, captures impurities such as the external air containing pollutants introduced into the box body, and can always supply fresh external air to the large space.

[0052] Furthermore, it includes an exhaust section, which includes a floor exhaust hole formed at a preset position of the floor section, a wall exhaust hole provided at a preset position of the lower wall section and connected to the outside, and an exhaust guide passage connected from the floor exhaust hole to the wall exhaust hole, and the outside air supplied from the external air conditioner circulates in the large space and is exhausted from the floor exhaust hole. Then, the outside air exhausted from the floor exhaust hole is exhausted to the outside through the wall exhaust hole through the exhaust guide passage. In addition, the first ventilation method of forced exhaust by providing an exhaust blower at a preset position of the exhaust section is also possible.

[0053] Here, many facilities including large spaces have underground spaces, and moisture trapped in the underground spaces causes the floor to expand or contract. In this regard, forming a discharge guide passage connected from the floor exhaust hole to the wall exhaust hole can ensure the air circulation in the underground space and prevent moisture from being trapped in the underground space.

[0054] In order to achieve the above-mentioned object, the ventilation method of the present invention is a ventilation method for a facility having a large space, which is a structure in which air is continuously blown from an upper space and a lower space and is surrounded by a floor portion, a roof portion and a wall portion, and comprises:

[0055] A process in which a refrigerant circulates through a heat medium circuit from a heat source device;

[0056] A process in which the outside air introduced from the inlet of the outside air conditioner passes through the heat exchanger and then is supplied to the large space from the air supply port, wherein the outside air conditioner is arranged at a preset position on the upper floor and includes a heat exchanger arranged on the path of the heat medium circuit;

[0057] A process for exhausting the internal air in a large space through floor exhaust holes provided at predetermined positions on the floor portion;

[0058] The process of exhausting the internal air from the floor exhaust hole and exhausting it from the wall exhaust hole through the exhaust guide channel. The wall exhaust hole is set at a preset position on the wall surface of the lower layer and connected to the outside of the house.

[0059] Here, as a ventilation method, by including a process in which a heat source device circulates a refrigerant through a heat medium circuit, the refrigerant circulates through the heat medium circuit through the heat exchanger of the external air conditioner, thereby cooling or heating the heat exchanger of the external air conditioner.

[0060] Furthermore, the process includes a step of supplying air from an air supply port to a large space after external air is introduced from an inlet of an external air conditioner to a heat exchanger. The external air conditioner is arranged at a preset position on an upper layer and includes a heat exchanger arranged on a path of a heat medium circuit, which can promote ventilation in the large space.

[0061] Furthermore, the outside air introduced from the inlet passes through the heat exchanger, and the outside air introduced from the external air conditioner exchanges heat with the heat exchanger, so that the air is supplied to the large space after being cooled or heated. Therefore, when an air conditioner is used as a heat source device, for example, the operating time of the air conditioner until the target temperature set by the air conditioner is reached is shortened, so the operating load of the air conditioner can be reduced.

[0062] In addition, the process of exhausting the internal air in the large space through the floor exhaust holes set at the preset positions of the floor part can circulate the internal air in the large space and exhaust it from the floor exhaust holes, thereby promoting ventilation of the large space.

[0063] In addition, the internal air exhausted from the floor exhaust hole is exhausted from the wall exhaust hole through the exhaust guide channel. The wall exhaust hole is set at a preset position on the wall surface of the lower layer and communicated with the outside. The internal air exhausted from the floor exhaust hole is exhausted to the outside through the exhaust guide channel. Therefore, the air supply and exhaust volume are uniform, so that the large space is constantly replaced with fresh air, thereby promoting ventilation.

[0064] Effects of the Invention

[0065] The present invention provides a ventilation system and a ventilation method thereof, which can efficiently ventilate the activity area of ​​users in an indoor facility with a large space to achieve a comfortable environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 is a schematic diagram of a facility using a ventilation system according to an embodiment of the present invention;

[0067] Figure 2 It is a front perspective view of the internal structure of the external air conditioner;

[0068] Figure 3 is a side view of the internal structure of the external air conditioner;

[0069] Figure 4 A top view of the installation state of the external air conditioner in the room;

[0070] Figure 5 is a schematic diagram of a heat medium circuit of a ventilation system;

[0071] Figure 6 It is a top view of a facility using the ventilation system according to an embodiment of the present invention.

[0072] In the figure,

[0073] 1. Facilities; 11. Arena; 12. Pedestal; 13. Floor; 14. Wall; 15. Roof; 16. Inner wall; 17. Front passage; 18. Back passage; 2. External air conditioner; 21. Box; 211. Inlet; 212. Air supply chamber; 213. Ceiling; 214. Air supply outlet; 215. Wind deflector; 216. External air inlet passage; 217. Communication hole; 22. Heat exchanger; 221. Heat pipe; 222. Blade; 223. First inlet and outlet pipe; 224. Second inlet and outlet pipe; 23. Air supply filter; 24. Air supply fan; 241. Main body; 242. Fixing parts; 243 , fan blades; 244, nozzles; 25, inlet filter; 26, drainage portion; 261, water receiving portion; 262, drainage channel; 263, trap portion; 264, drainage hole; 27, base; 28, partition; 29, opening hole; 3, integrated air conditioner; 31, indoor unit; 32, outdoor unit; 33, heat medium circuit; 331, first refrigerant piping; 332, second refrigerant piping; 333, third refrigerant piping; 4, ventilation duct; 5, through hole; 6, fixture; 7, connecting component; 8, radiation panel; 9, exhaust portion; 91, floor exhaust hole; 92, floor exhaust hole; 93, exhaust guide channel; 94, exhaust blower. DETAILED DESCRIPTION

[0074] The ventilation system of the embodiment of the present invention mainly includes an external air conditioner for supplying external air into a large space, a heat source device connected to the external air conditioner through a heat medium circuit, and an exhaust unit for exhausting the external air supplied into the large space to the outside of the house. Each component will be described in detail below with reference to the accompanying drawings.

[0075] Figure 1Schematic diagram of a facility 1 using the ventilation system of the present invention. The facility 1 mainly includes a large space S, and the large space S has a structure that allows continuous ventilation between the upper and lower spaces. For example, it is a gymnasium that includes a circular arena 11 (lower floor) where sports competitions, performances, concerts, etc. can be held, and a pedestal 12 (upper floor) that accommodates spectators.

[0076] Here, the facility 1 to which the ventilation system of the present invention can be applied is not limited to the following: Figure 1 The gymnasium with the structure shown does not need to be particularly limited as long as it contains an upper layer and a lower layer, and a large space with a continuous ventilation structure between the upper and lower spaces. For example, dome-type stadiums, athletic fields, other concert halls, exhibition halls, and martial arts halls can also be applied.

[0077] The facility 1 is a large space S formed by a floor portion 13, a wall portion 14, and a roof portion 15. An inner wall 16 is provided on the amphitheater portion 11 as the lower layer. The inner wall 16 surrounds the entire periphery of the amphitheater portion 11 and has a height of 3m to 4m. In front of the inner wall 16, a radiant panel 8 is provided on the entire periphery of the amphitheater portion 11. The radiant panel 8 is an air conditioner that mainly uses the amphitheater portion 11 as a target area.

[0078] The radiation panel 8 is an air conditioner, and its height is from the floor part 13 to the base part 12 which serves as the upper layer. It is composed of long aluminum tubes with excellent thermal conductivity and a diameter of about 6 cm, which are continuously arranged at equal intervals in the horizontal direction. Inside, cooling water sent from an outdoor unit (not shown) circulates, and heat exchange can be carried out only through quiet thermal radiation without the need for air supply by fans, etc.

[0079] Here, the air conditioner as the amphitheater 11 is not limited to the radiation panel 8. For example, floor-standing independent air conditioners may be installed at a certain distance in the circumferential direction of the amphitheater 11. However, by using the radiation panel 8 as the air conditioner of the amphitheater 11, when a competition such as badminton or table tennis in which the influence of air supply cannot be ignored is held in the amphitheater 11, it is preferable to use the radiation panel 8 that performs heat exchange by quiet heat radiation.

[0080] A pedestal 12 is provided as an upper layer above the inner wall surface 16 . The pedestal 12 is a step-like structure that is inclined downward toward one side of the circular arena 11 so that the entire circular arena 11 can be overlooked.

[0081] A handrail for preventing falling is provided on the front of the front row of the pedestal part 12 across the front passage 17, and a back passage 18 is provided behind the pedestal part 12. The back passage 18 is provided with an external air conditioner 2 for supplying external air to the large space S and an independent air conditioner 3 for air conditioning the amphitheater part 11 as the target area.

[0082] The external air conditioner 2 is installed in the room, and its housing 21 includes a heat exchanger 22, an air supply filter 23 and an air supply fan 24. Figure 2-Figure 4 The specific structure of the external air conditioner 2 will be described.

[0083] Here, the external air conditioner 2 of the embodiment of the present invention is not limited to the built-in type described in detail below. For example, it can be a type installed on a window frame formed on the wall portion 14 of the upper layer, or a type that does not require a forced air supply device such as a fan and can use a natural air supply method.

[0084] The box 21 is erected on a stainless steel base 27 and is vertically elongated in a square prism shape and is composed of a heat-insulating panel. The base 27 is set on the installation surface. An inlet 211 for introducing external air A is set at the bottom of one side of the box 21, and an air supply port 214 for supplying the external air A introduced from the inlet 211 to the room is set at the top. In addition, the internal structure of the external air conditioner 2 cannot be seen from the outside, but for the convenience of explanation, as shown in FIG. Figure 2-Figure 3 As shown, the internal structure of the external air conditioner 2 can be seen.

[0085] Here, the box 21 is not limited to being formed by the heat insulation panel. However, the box 21 formed by the heat insulation panel can prevent condensation caused by the temperature difference between the inside and outside of the box 21, and can prevent various mechanical parts housed in the box 21 from malfunctioning due to condensation.

[0086] In addition, the housing 21 is not limited to being installed across the base 27 from the installation surface. However, when the housing 21 is installed on the base 27, there is no need to adjust the horizontal position and vertical position of the housing 21 relative to the installation surface, and the installation operation of the housing 21 relative to the installation surface becomes easy. In addition, since the horizontal position and vertical position of the housing 21 can be ensured, for example, the supply fan 24 described later can be appropriately driven, and the condensed water of the heat exchanger 22 can be discharged vertically downward.

[0087] In addition, the material of the base 27 is not limited to stainless steel. However, if the base 27 is made of stainless steel, it can prevent stains from adhering to the surface, and it is not easy to produce scratches, so that the appearance looks better.

[0088] In addition, the shape of the box body 21 is not limited to a square prism, and may be a prism, a cylinder, or the like in addition to a square prism.

[0089] The inlet 211 is connected to the through hole 5 through the ventilation pipe 4. Usually, fresh external air A is introduced into the interior of the box 21 through the ventilation pipe 4. The through hole 5 is arranged on the wall portion 14 near the back channel 18 of the upper layer, and the back channel 18 is provided with an external air conditioner 2.

[0090] The inlet port 211 is provided with a mesh inlet port filter 25. The inlet port filter 25 is a filter mainly used to capture insects, dust and other large-particle substances that enter the housing 21 together with the external air A.

[0091] Here, it is not limited to setting the inlet filter 25. However, setting the inlet filter 25 can prevent insects and dust as mentioned above, so that the inside of the box 21 can always be kept clean, and various mechanical parts set inside the box 21 can be prevented from malfunctioning due to insects or dust.

[0092] In addition, as the inlet filter 25, in addition to achieving the purpose of insect prevention and dust prevention, it is also possible to apply a certain coating on the filter to make it have deodorizing and antibacterial functions. Further, the shape or size of the net of the inlet filter 25 can also be appropriately changed according to the purpose.

[0093] An external air introduction passage 216 is formed inside the housing 21. The external air introduction passage 216 is used to guide the external air A introduced from the introduction port 211 to the air supply port 214. The angle between the introduction direction of the external air A introduced from the introduction port 211 and the axial direction of the external air introduction passage 216 is about 90 degrees. The external air introduction passage 216 is divided into a first partition chamber R1 on the upstream side (the introduction port 211 side) and a second partition chamber R2 on the downstream side (the air supply port 214 side) by a partition plate 28. An opening hole 29 is formed in the approximate center of the partition plate 28. The first partition chamber R1 and the second partition chamber R2 are in a two-way communication state through the opening hole 29. A heat exchanger 22 described later is provided at a position corresponding to the opening hole 29 so that the heat exchanger 22 is adjacent to the first partition chamber R1.

[0094] Here, it is not limited to setting the partition 28. However, by dividing the external air introduction channel 216 into the first compartment R1 and the second compartment R2 by the partition 28, the external air A introduced from the introduction port 211 can be completely heat exchanged by the heat exchanger 22 and then flow into the second compartment R2. In addition, the external air A introduced from the introduction port 211 to the first compartment R1 changes its flow direction after colliding with the partition 28, and the external air A in the first compartment R1 can be made into a turbulent state. The external air A in a turbulent state further promotes heat exchange through the heat exchanger 22 provided on the first compartment R1.

[0095] The heat exchanger 22 can exchange heat with the external air A introduced from the inlet 211, and includes a heat pipe 221, which is formed into a serpentine shape by cross-connecting straight parts and bent parts; and a plurality of blades 222, which cross the radial direction of the heat pipe 221, and are the so-called fin-tube type.

[0096] In the heat exchanger 22, the main body composed of the heat pipe 221 and the blades 222 is arranged on the partition 28 by a known fixing means such as a mounting bracket, so that the main body corresponds to the opening hole 29 of the partition 28. Figure 3 As shown, the heat exchanger 22 is fixed inside the housing 21 and is inclined about 65 degrees (about 25 degrees relative to the horizontal axis) toward the inlet 211 relative to the vertical direction of the housing 21 (the axial direction of the external air introduction passage 216).

[0097] Here, in the heat exchanger 22, it is not limited that the main body including the heat pipe 221 and the blade 222 is fixed at a position corresponding to the opening hole 29 of the partition 28. However, by setting the main body of the heat exchanger 22 at a position corresponding to the opening hole 29 of the partition 28, the external air A after heat exchange in the heat exchanger 22 can flow from the opening hole 29 into the second partition chamber R2 through the opening formed on the main body, thereby improving the efficiency of the external air A flowing from the first partition chamber R1 to the second partition chamber R2.

[0098] Furthermore, the heat exchanger 22 is not limited to being arranged on the first partition chamber R1 side. However, by arranging the heat exchanger 22 on the first partition chamber R1 side, all the external air A can be heat exchanged through the heat exchanger 22, and all the condensed water dripping from the heat exchanger 22 will drip into the water receiving portion 261 described later. Therefore, the condensed water will not be retained inside the box body 21, and abnormalities of the internal mechanical parts caused by the condensed water can be prevented in advance.

[0099] Furthermore, the heat exchanger 22 is not limited to being arranged at a certain angle relative to the vertical direction of the housing 21. However, by arranging the heat exchanger 22 at a certain angle relative to the vertical direction of the housing 21, the heat exchanger 22 can be arranged in a limited space, thereby preventing the housing 21 from being enlarged.

[0100] Furthermore, by setting the heat exchanger 22 at a certain tilt angle, it can play a rectifying role, guiding the external air A introduced from the inlet 211 to flow vertically upward in the box 21. Furthermore, when the refrigeration equipment of the independent air conditioner 3 is in operation, the condensed water attached to the heat exchanger 22 can be drained smoothly along the tilt of the blades of the heat exchanger 22. Thus, the problem of air flow stagnation caused by the narrowing of the air circulation part of the heat exchanger 22 due to the stagnation of the surface tension of the condensed water or water droplets can be prevented.

[0101] Furthermore, the setting angle relative to the vertical direction of the heat exchanger 22 is not limited to being inclined at about 65 degrees toward the inlet 211. As long as all the external air A introduced from the inlet 211 can be efficiently directed to the heat exchanger 22, for example, the inclination angle range of about 45 to 75 degrees toward the inlet 211 relative to the vertical direction of the heat exchanger 22 can be appropriately changed.

[0102] The heat exchanger 22 includes a first inlet and outlet pipe 223 and a second inlet and outlet pipe 224 connected to the heat conducting pipe 221. The front ends of the first inlet and outlet pipe 223 and the second inlet and outlet pipe 224 extend out of the box body 21, and are connected to the second refrigerant pipe 332 and the third refrigerant pipe 333 in the heat medium circuit 33 connected to the integral air conditioner 3 through a joint, and are detachably connected.

[0103] As described above, the heat exchanger 22 circulates the refrigerant supplied by the outdoor unit 32 of the integrated air conditioner 3 through the heat medium circuit 33, and can perform heat exchange with the outside air A. The supply of the refrigerant starts with the start of the operation of the integrated air conditioner 3 and stops with the stop of the operation of the integrated air conditioner 3. That is, the operation of the heat exchanger 22 is linked to the operation of the integrated air conditioner 3, and therefore, the structure is a structure that does not require an additional new power supply.

[0104] Therefore, for example, when the whole air conditioner 3 operates the refrigeration device, the outside air A introduced from the inlet 211 of the outside air conditioner 2 is cooled to a preset temperature through the heat exchanger 22, and the cooled outside air A is supplied from the air supply port 214. Therefore, the operation time of the whole air conditioner 3 until the target temperature set for the whole air conditioner 3 is shortened, and the operation load of the whole air conditioner 3 can be reduced.

[0105] Furthermore, when the integrated air conditioner 3 operates the heating device, the external air A introduced from the inlet 211 of the external air conditioner 2 is heated to a preset temperature by the heat exchanger 22, and the heated external air A is supplied from the air supply port 214. Therefore, as in the case of operating the cooling device, the operating time of the integrated air conditioner 3 until the target temperature set by the integrated air conditioner 3 is shortened, and the operating load of the integrated air conditioner 3 can be reduced.

[0106] Furthermore, when the overall air conditioner 3 is stopped, the outside air A does not need to be cooled or heated by the heat exchanger 22, and is supplied from the air supply port 22. As described above, the outside air A supplied from the external air conditioner 2 is controlled to a suitable temperature corresponding to the operation mode of the overall air conditioner 3 and then supplied to the large space S, so that the temperature of the large space S can always be ensured to be a certain temperature.

[0107] The air supply filter 23 is a filtering device that captures pollutants (pollen or PM2.5) contained in the external air introduced from the inlet 211 to purify the external air. The air supply filter 23 is similar to the heat exchanger 22, and has a preset inclination angle (about 45 degrees in the embodiment of the present invention) relative to the vertical axis of the housing 21 (the axis of the external air introduction channel) toward the inlet 211 side, and is arranged on the second partition chamber R2 as the rear flow side of the heat exchanger 22.

[0108] Here, the air supply filter 23 is not limited to being set at a preset tilt angle relative to the vertical axis of the housing 21. However, by setting the air supply filter 23 at a preset tilt angle relative to the vertical direction of the housing 21, the air supply filter 23 can be set in a limited space, thereby preventing the housing 21 from being enlarged.

[0109] Furthermore, the setting angle of the air supply filter 23 relative to the vertical axis is not limited to about 45 degrees on the side of the guide inlet 211. As long as all the external air A passing through the heat exchanger 22 can efficiently pass through the air supply filter 23 while being introduced from the inlet 211, the setting angle can be appropriately changed within the range of about 30 degrees to 60 degrees on the side of the guide inlet 211 relative to the vertical axis of the box body 21.

[0110] The above-mentioned inlet filter 25 is a filter whose purpose is to capture larger particle size materials (insects or dust) contained in the external air A, but the air supply filter 23 is used to capture microparticles that the inlet filter 25 cannot capture, so the mesh size of the filter is smaller than that of the inlet filter 25.

[0111] An air supply chamber 212 is formed by a ceiling 213 at the top of the box body 21. A connecting hole (not marked) is formed on the ceiling 213, so that the external air A can be connected between the external air introduction channel 216 and the air supply chamber 212. In addition, an air supply port 214 is formed on the side of the air supply chamber 212, and the air supply port 214 blows the external air A into the room, and is arranged at three locations in the side of the box body, namely the front, left and right sides, so that the external air A entering the box body 21 can be supplied from the air supply port 214 in three directions. In addition, a plurality of wind direction plates 215 are arranged on the air supply port 214 at preset intervals.

[0112] Here, it is not limited to setting the wind direction plate 215. However, setting the wind direction plate 215 can improve the directionality of the external air A during air supply, so that the external air A is easily distributed in the entire space of the large space S, and indoor ventilation can be achieved in a short time.

[0113] An air supply fan 24 is disposed in the air supply chamber 212, and the air supply fan 24 is used to generate an air flow from the inlet 211 to the air supply port 214 along the external air introduction channel 216. The air supply fan 24 includes fan blades 243, a motor (not shown) for driving the fan blades 243, a body 241 for accommodating the fan blades 243 and the motor, and a nozzle 244 connected to the body 241.

[0114] The fan blade 243 includes, for example, a mini fan, a wind tunnel surrounding the mini fan, and a housing, and the mini fan, the wind tunnel, and the housing are separably arranged, and it is a structure that can easily perform the replacement operation of the mini fan that needs to be replaced regularly.

[0115] The main body 241 of the air supply fan 24 is suspended from the ceiling of the box body 21 through a fixing fitting 242, and is connected to a switch for supplying power to the motor and a controller for setting the number of rotations of the motor. This structure allows the motor to rotate to the number of rotations set by the controller 246 when the switch is operated to turn on the power, thereby driving the fan blades 243 connected to the motor.

[0116] By rotating the fan blades 243, a gas flow from the inlet 211 to the air supply port 214 is generated inside the housing 21. Figure 3 Thus, a large amount of external air A is introduced into the external air introduction passage 216 from the introduction port 211, and further, the external air A can be supplied to the room from the air supply port 214. Therefore, the air in the room can be replaced in a short time.

[0117] The motor's rotation speed during normal operation is set at approximately 2200 to 2300 rpm as a standard setting, but is not limited to this. The number of external air conditioners 2 installed can be appropriately changed according to the size of the room in which the external air conditioner 2 is installed, so that the necessary ventilation volume can be obtained.

[0118] A drainage portion 26 is provided vertically below the heat exchanger 22, and the drainage portion 26 is used to receive the condensed water generated in the heat exchanger 22 and discharge it to the outside of the external air conditioner 2. The drainage portion 26 includes a water receiving portion 261 for receiving the condensed water dripping from the heat exchanger 22, a trap portion 263 for storing the condensed water dripping from the water receiving portion 261, and a drainage channel 262 for guiding the condensed water from the water receiving portion 261 to the trap portion 263.

[0119] A drainage hole 264 communicating with the drainage channel 262 is provided at a preset position of the water receiving portion 261, and a slope is formed at a preset angle toward the drainage hole 264. Therefore, all condensation water dripping onto the water receiving portion 261 is drained from the drainage hole 264 to the drainage channel 262 through the slope.

[0120] The trap 263 is provided on the side of the housing 21 and has a preset volume so as to store the condensed water discharged through the drainage channel 262 for a period of time. The trap 263 has an operating part that can open and close the discharge hole (not shown) by, for example, pressing. If a certain amount of condensed water is stored in the trap 263, the operator can operate the operating part to discharge the condensed water to the outside of the machine.

[0121] In addition, one of the side surfaces of the box body is formed into an openable and closable door structure, so that when the external air conditioner 2 is maintained, the relevant door can be opened to easily perform operations such as repairing or replacing the internal mechanical parts.

[0122] And, if Figure 4 As shown, when the external air conditioner 2 is set on the back passage 18, it can also be connected to a fixed object 6 such as a pillar through a connecting member 7. In this way, the external air conditioner 2 is firmly fixed by connecting to the fixed object through the connecting member 7, and when an earthquake occurs, the external air conditioner 2 can be prevented from falling down, ensuring safety.

[0123] The integrated air conditioner 3 includes an indoor unit 31 disposed on the back passage 18 of the base portion 12 and an outdoor unit 32 disposed outdoors. The indoor unit 31 and the outdoor unit 32 are connected via a heat medium circuit 33. Figure 5As shown, the heat medium circuit 33 includes a first refrigerant circuit 331, a second refrigerant circuit 332 and a third refrigerant circuit 333, and the outdoor unit 32 and the indoor unit 31 are directly connected via the first refrigerant circuit. In addition, as described above, the indoor unit 31 and the external air conditioner 2 are connected via the second refrigerant piping 332, and the external air conditioner 2 and the outdoor unit 32 are connected via the third refrigerant circuit 333.

[0124] Here, the package air conditioner 3 is not limited to being composed of the indoor unit 31 and the outdoor unit 32. The package air conditioner 3 only needs to have the heat medium circuit 33, and for example, a package air conditioner without the outdoor unit 32 may be provided.

[0125] Furthermore, the heat exchanger 22 of the external air conditioner 2 is not limited to being connected to the heat medium circuit 33 of the overall air conditioner 3. For example, it may be connected to the heat medium circuit of the radiation panel 8 (not shown), or it may be connected to the heat medium circuit of a cooling water circulation device provided separately. As described above, the heat source device connected to the heat exchanger 22 does not need to be particularly limited.

[0126] Next, the structure of the exhaust unit 9 will be described. The exhaust unit 9 includes a floor exhaust hole 91, a wall exhaust hole 92, and an exhaust guide passage 93. First, the floor exhaust hole 91 is formed on the floor portion 13 of the facility 1 and is formed at equal intervals along the inner wall surface 16. In addition, the wall exhaust holes 92 connected to the outside are formed on the wall portion 14, and the number of the wall exhaust holes 92 corresponds to the number of the floor exhaust holes 91. In addition, the floor exhaust hole 91 and the wall exhaust hole 92 are connected through the exhaust guide passage 93, so that the internal air of the large space S flowing into the floor exhaust hole 91 is forcibly exhausted from the wall exhaust hole 92 to the outside of the facility 1 through the exhaust blower 94 provided on the exhaust guide passage 93.

[0127] As described above, the first ventilation method adopted in the embodiment of the present invention is to forcibly supply the external air A to the large space S through the external air conditioner 2, and forcibly exhaust the external air A supplied to the large space S to the outside of the house through the exhaust blower 94.

[0128] Here, the installation position of the exhaust blower 94 is not limited to being installed on the exhaust guide passage 93. For example, it may be installed at any predetermined position of the floor exhaust hole 91 or the wall exhaust hole 92.

[0129] Furthermore, the exhaust section 9 is not limited to being provided with the exhaust blower 94, and a second ventilation method may be adopted in which the air supply side is forced air supply through the external air conditioner 2 and the exhaust side is natural exhaust.

[0130] Then, the layout of the ventilation system in the facility 1 is combined with Figure 6The facility 1 is described in detail with reference to a top view of the facility 1 shown in FIG. Figure 6 As shown, when the external air conditioner 2 and the integral air conditioner 3 are used as a set of air supply units, a plurality of air supply units are arranged at preset equal intervals along the back passage 18 of the pedestal portion 12. At this time, the positional relationship between the floor exhaust holes 91 formed along the floor portion 13 of the circular arena portion 11 and the air supply units is that the floor exhaust holes 91 are arranged on the center lines of the adjacent air supply units.

[0131] Here, the positional relationship between the air supply unit and the floor exhaust hole 91 is not limited to the above layout. However, if the floor exhaust hole 91 is provided on the center line of the adjacent air supply unit in the top view, the external air A supplied from the external air conditioner 2 can be exhausted to the floor exhaust hole 91 with the best efficiency.

[0132] Combination Figure 1 and Figure 6 , the air flow in the large space S in the facility 1 adopting the ventilation system of the above structure is described. First, the external air A is supplied to the circular arena part 11 from the external air conditioner 2 installed in the back passage 18 of the upper pedestal part 12. At this time, the temperature and humidity of the external air A are adjusted by the heat exchanger 22 of the external air conditioner 2. Then, according to the diffusion effect, the external air A is divided into a horizontal flow direction directed to the upper space of the pedestal part 12 and a flow direction obliquely downward along the pedestal part 12 toward the floor exhaust hole 91. Among them, the flow direction obliquely downward along the pedestal part 12 is quickly exhausted to the outside from the floor exhaust hole 91 together with pollutants containing exhaled air generated in the pedestal part 11.

[0133] Furthermore, when the external air conditioners 2 are arranged in a face-to-face position, the horizontal flows F1 and F2 of the external air A supplied from the respective external air conditioners 2 collide with each other near the center of the large space S. After that, the vertical downward direction of the external air A changes, and the external air A reaching the floor portion 13 forms a flow toward the floor exhaust hole 91 due to the negative pressure effect of the exhaust blower 94. At this time, the pollutants generated in the amphitheater portion 11 merge with the external air A flowing in from the upper floor and are rapidly exhausted to the outside from the exhaust hole 91.

[0134] As described above, a symmetrical circulation flow is formed with the center of the large space S as the boundary. Through this circulation flow, pollutants in the circular arena 11 are quickly discharged to the outside, and fresh outside air A is always supplied from the outside air conditioner 2. Therefore, the average value of the concentration of pollutants in the large space S is controlled to a low value.

[0135] Furthermore, the circular arena portion 11 contains pollutants caused by exhaled breath, and fresh air is always pressurized from the upper part of the circular arena portion 11 to the floor 13 and supplied downwardly. By utilizing the effect of instantaneous uniform diffusion, air flows toward the floor exhaust holes 91. Therefore, floating objects such as micro dust are suppressed when the circular arena portion 11 is used, and the ventilation system becomes an effective infection prevention measure for the large space S.

[0136] As described above, the ventilation device and ventilation method of the present invention can effectively ventilate the activity area of ​​users in a large indoor facility, thereby realizing a comfortable environment.

Claims

1. A ventilation system, which is suitable for a facility having a large space, wherein the large space is a structure in which air is continuously blown from an upper space and a lower space, and is surrounded by a floor portion, a roof portion, and a wall portion, and comprises: An air conditioner is arranged on the upper layer, a preset area of ​​the upper layer is used as an air conditioning object, and contains a heat medium circuit for circulating a refrigerant; The external air conditioner includes a ventilation duct, a housing, a heat exchanger, an air supply fan and an air supply filter. The ventilation pipe is arranged on the upper layer and connected to the air supply hole formed at a preset position of the wall surface of the upper layer. The box is arranged at a preset position of the upper layer, and an external air introduction channel is formed on the box, the external air introduction channel leads to an air supply port, and the air supply port supplies the external air introduced from the introduction port to the large space. The heat exchanger is provided on the path of the heat medium circuit to cool or heat the external air introduced from the inlet. The air supply fan is disposed in an air supply chamber in which the air supply port is formed, and generates an air flow from the introduction port toward the air supply port. The air supply filter is located on the external air introduction passage, is arranged on the downstream side of the heat exchanger, and purifies the external air introduced from the introduction port; The exhaust part includes a floor exhaust hole formed at a preset position of the floor part, a wall exhaust hole arranged at a preset position of the wall part of the lower layer and connected to the outdoors, and an exhaust guide channel connected from the floor exhaust hole to the wall exhaust hole. 2 . The ventilation system according to claim 1 , wherein the floor exhaust holes are located on the center lines of the adjacent air supply units in a top view of the large space.

3. The ventilation system according to claim 1 or 2, wherein the air conditioner comprises an indoor unit and an outdoor unit connected to the heat medium circuit, The heat medium circuit comprises: a first refrigerant pipe for conveying refrigerant from the outdoor unit to the indoor unit, a second refrigerant pipe for conveying refrigerant from the indoor unit to the outdoor air conditioner, and a third refrigerant pipe for conveying refrigerant from the outdoor air conditioner to the outdoor unit.

4. The ventilation system according to claim 1 or 2, An amphitheater portion including the floor portion is formed on the lower layer, and a radiant panel is provided to air condition the amphitheater portion. The radiant panel has a height from the floor portion to the upper layer, and is provided on the entire periphery of the floor portion.

5. The ventilation system according to claim 1 or 2, The upper layer is a stepped pedestal portion, and the stepped pedestal portion is inclined downward from the wall portion on the back side toward the front side. A front passage is formed on the front side of the base portion, and a back passage is formed on the back side. The external air conditioner is disposed on the rear passage.

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