KR20220060235A - Clean room system for residental buildings - Google Patents

Abstract

The present invention relates to a clean room system for houses, which comprises: an air circulation system which conditions outdoor air (OA) to supply the same to the indoor space as a supply air (SA) while circulating part of the same as returned air (RA); and a sealing system provided to seal the indoor space from the outside, wherein the air circulation system comprises at least one of a fine dust filter means, a temperature control means and a humidification means with respect to the outdoor air. Therefore, according to the clean room system for houses of the present invention, in a state in which a complete system sealing is realized, including an air shower installed at an entrance door, a ventilation function is performed by using a heat recovery type ventilation device provided with a fine dust filtering function, which is composed of a main body and/or a satellite body. As for a humidifier and a heat source such as a heating and cooling source and the like which are required to maintain the constant temperature and humidity of the indoor air, the heat source of a boiler or an air conditioner which are already installed may be utilized, so as to minimize processes related to installation and construction and an increase in the costs thereof compared to a conventional industrial clean room system. Furthermore, the driving energy can be saved to the greatest extent. Consequently, the present invention may be advantageously applied to normal buildings, particularly to conventional educational facilities, public facilities, residential facilities and offices which are not provided with ventilation equipment.

Description

Clean room system for housing {CLEAN ROOM SYSTEM FOR RESIDENTAL BUILDINGS}

The present invention relates to a clean room system, and more particularly, to a clean room system for houses such as apartments, officetels, or offices.

In various high-tech industries such as semiconductors, displays, batteries, bio or pharmaceuticals in the related art, a clean work environment controlled so that airborne particles, temperature, humidity, and pressure are kept constant, and for this purpose, a clean room is widely used. Such a clean room introduces a lot of outside air to maintain indoor cleanliness and positive pressure, and in this case, it is important to precisely control a predetermined temperature and humidity depending on the clean room working environment. It is necessary to heat and humidify the outside air.

1 shows a configuration diagram of a conventional cleanroom system 10'. The clean room system 10 ′ of FIG. 1 shows the clean room system 10 ′ in which the outdoor air conditioning system 110 ′ is combined with the FFU 128 (Fan Filter Unit) method as the air circulation system 120 . , the humidity control for the outside air is in the form of steam humidification using the boiler 117 (steam humidification) method. The steam humidification type clean room system 10' is basically an outdoor air conditioning system 110', a steam boiler 117 (steam boiler), a dry cooling coil 130 (DCC; Dry Cooling Coil) heat exchanger, FFU ( 128), including the air circulation system 120, and although not shown in the drawing, a cooling heat source system may be included. The outdoor air conditioning system 110' includes an air filter 112, a pre-heating coil 114' (Pre-heating coil), a cooling coil 116 (Cooling coil), a reheating coil 118' (Re -heating coil), a steam humidifier (115), is composed of a blower (Air blower) (119). The preheating coil 114 ′ and the reheating coil 118 ′ are a heat exchange method using heat transferred through the boiler 117 .

, 90 %RH의 급기(SA; supply air) 상태로 공조되어 클린룸 실내(140)의 하부 플레넘(122)(lower plenum)으로 공급된다. 이 공급된 급기(SA)는 순환공기(RA)와 클린룸 하부 플레넘(120)에서 혼합된 후 드라이쿨링코일(130)과 리턴 샤프트(124), FFU(128)를 순차 거쳐 클린룸 실내(140)로 공급되고 클린룸 실내(140)는 최종적으로 23

, 45 %RH의 일정한 온도 및 습도로 유지된다. 이러한 일련의 과정에 따른 공기의 온도 및 습도에 관한 상태 변화를 도 2의 공기선도로 나타내었다. 도 2에서 영역 1은 동절기, 영역 2는 간절기, 영역 3은 하절기를 각각 나타내며, 각 영역에서 식별자 η은 도입되는 외기의 최초 상태를 나타낸다.Looking at the temperature and humidity control process in the steam heating type clean room system 10', the introduced outdoor air (OA) first passes through the outdoor air conditioning system 110', for example, 12

, 90 %RH is supplied to the lower plenum 122 (lower plenum) of the air conditioning (SA; supply air) state. This supplied supply air (SA) is mixed with circulating air (RA) in the lower plenum 120 of the clean room, and then passes through the dry cooling coil 130, the return shaft 124, and the FFU 128 sequentially to the clean room interior ( 140) and the clean room indoor 140 is finally 23

, maintained at a constant temperature and humidity of 45%RH. The change of state with respect to the temperature and humidity of the air according to this series of processes is shown in the air diagram of FIG. 2 . In FIG. 2 , region 1 represents the winter season, area 2 represents the interseason, and area 3 represents the summer season, and the identifier η in each area represents the initial state of the introduced outdoor air.

Meanwhile, according to the recently changed energy-related laws and the increasingly harsh climate environment change, energy saving and external pollution such as fine dust are also reduced in the case of education facilities, public facilities, and general buildings such as apartments, officetels, or offices (hereinafter referred to as 'houses'). There is a need to introduce a high level temperature and humidity control and fine dust blocking function that is equivalent to the conventional industrial clean room system beyond the level of simple ventilation for the purpose of blocking materials. However, in order to provide a high-clean environment for the house, it is cost and workability to apply the sophisticated ventilation facility equivalent to the conventional industrial clean room system according to FIGS. 1 and 2 and separate parts facilities related to heat sources as it is. Not only is it unrealistic, but it uses ventilation facilities and heat sources applied to existing houses, but there is a specificity of residential use. Considering these factors, a clean room system of a new concept optimized for houses is required.

Korean Patent No. 10-0963838 Korean Patent No. 10-1071350 Korean Patent No. 10-1254935

SUMMARY OF THE INVENTION It is an object of the present invention to provide a clean room system for a house of a new concept that can minimize the installation work and can be installed at a low cost, without applying the conventional industrial clean room system.

The gist of the present invention related to the above-mentioned problem is the same as described in the claims as follows.

(1) an air circulation system that air-conditions outdoor air (OA) and supplies it to the room as supply air (SA) while circulating some of it as recirculated air (RA); and a sealing system for shielding the room from the outside, wherein the air circulation system includes at least one of a fine dust filter means for the outside air, a temperature control means, and a humidification means. .

(2) The clean room system for a house according to (1) above, characterized in that the air circulation system is configured in any one of a heat recovery type ventilation device, an outdoor air conditioner for air conditioning in a building, and a centralized air conditioner.

(3) The clean room system for a house according to (2) above, characterized in that the heat recovery type ventilation device is composed of a main body and a satellite.

(4) The house clean room system according to (3), wherein the main body includes a total heat exchanger, a blower, and an air filter, and the air filter is provided as the fine dust filter means.

(5) The clean room system for a house according to (3) above, wherein the satellite includes a blower and an air filter, and the air filter is provided as the fine dust filter means.

(6) The clean room system for houses according to (1) above, characterized in that the temperature control means includes at least one of a cold and hot heat source for building air conditioning, an air conditioner as a cold heat source, and an ondol or a boiler as a heat source.

(7) The clean room system for a house according to (1) above, characterized in that the humidifying means is an evaporative humidifier or a boiler.

(8) The clean room system for a house according to (1) above, characterized in that the recirculated air is supplied to the room as supply air by joining the outdoor air before or after air conditioning.

(9) The clean room system for a house according to (1), characterized in that it includes an air shower installed on the door in the sealing system.

(10) The clean room system for a house according to (1) above, characterized in that the sealing system includes a fixed window.

As described above, according to the house cleanroom system according to the present invention, in a state in which the complete system sealing including the air shower installed on the door is made, a heat recovery type ventilation device with a fine dust filtering function composed of a main body and/or a satellite is used. It performs ventilation function, but utilizes heat sources such as humidifiers and cold/warm heat sources necessary for constant temperature and humidity of indoor air, such as boilers or air conditioners that have already been installed, compared to normal industrial cleanroom systems, installation and construction related work and costs Since the increase can be minimized and the operation energy saving can be maximized, it can be advantageously applied to general buildings, especially existing educational facilities, public facilities, residential facilities, and offices without ventilation facilities.

1 is a block diagram of a conventional steam heating type clean room system.
FIG. 2 is an air diagram of changes in temperature and humidity according to the clean room system of FIG. 1. FIG.
3 is a block diagram of a house clean room system according to an embodiment of the present invention.
Figure 4 is an air conditioning system diagram of the clean room system of Figure 3;
5 is an air diagram of changes in temperature and humidity according to the house cleanroom system of FIG. 3;

Hereinafter, the present invention will be described in detail through examples. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Accordingly, since the configuration of the embodiments described in this specification is only one of the most preferred embodiments of the present invention and does not represent all the technical spirit of the present invention, various equivalents that can be substituted for them at the time of filing of the present invention It should be understood that there may be variations and variations. On the other hand, in the drawings, the same or similar reference numbers are given to the same or equivalents, and in the entire specification, when it is said that a part "includes" a certain element, it is a different element unless otherwise stated. It does not exclude, but means that other components may be further included.

3 shows a configuration diagram of a house clean room system 10 (hereinafter, 'clean room system 10') according to an embodiment of the present invention. Referring to FIG. 3 , the clean room system 10 according to the present invention includes an air circulation system 110 and an airtight system 120 .

Basically, outdoor air (OA) of the air circulation system 110 is introduced and then air-conditioned within a set temperature and humidity range to be converted into a supply air (SA) form and supplied to the room and exhausted to the outside at the same time (EA). ; Exhaust Air) performs ventilation and air conditioning functions. In addition, along with the process of ventilating the indoor air to the outside air, it functions to filter fine dust contained in the outdoor air and circulates some of the exhaust to the recirculated air (RA). In this case, the recirculated air may be supplied to the room as supply air by being joined to the outside air before or after the air conditioning.

The cleanliness and air temperature and humidity implemented by the air circulation system 110 may be appropriately preset values according to the use environment. For example, cleanliness maintains class 1,000 to 100,000 based on the US Federal Standards Fed standard 209D, and in response, the number of indoor ventilation can be targeted at 1 to 100 ACH (Air changes/h). The indoor temperature and humidity can be set to 23±1 ^o C, 45±5 %RH, which is a comfortable level for the human body, reflecting the building law standards, Korean industrial standard KS B 6879, and industrial clean room indoor conditions. If constant humidity conditions are abandoned for energy saving, it is desirable to maintain at least 30% of the relative humidity inside the clean room.

The air circulation system 110 includes at least one accessory means of a fine dust filter means for outside air (not shown), a temperature control means 116 and a humidification means 118 for performing the above functions. , in this case, rather than separately installing these accessory means using the cleanroom system 10, they utilize the ones already provided in the house for ventilation, air conditioning and filtering purposes, so compared to the normal industrial cleanroom system, installation and construction related The basic features are that it is possible to minimize the increase in work and cost and to maximize the energy saving.

Various methods and forms may be utilized as the air circulation system 110 , and an outdoor air conditioner for building air conditioning or a centralized air conditioner may be used, or a heat recovery type ventilation device may be preferably used. The heat recovery type ventilation device may include a main body 112 installed outside the house and one satellite body 114 installed inside the house.

The main body 112 of the heat recovery type ventilator forcibly sucks in outdoor air from the outside, filters fine dust, and then pumps the supply air toward the room. To this end, the main body 112 is configured to include a total heat exchanger (not shown), a blower (not shown) and an air filter (not shown). In this case, the air filter is an accessory means of the air circulation system 110 . It constitutes a part of the fine dust filter means.

The satellite body 114 of the heat recovery type ventilation device is attached to the main body 112 so that separate air supply can be made in units of divided compartments in the room or uniform air supply can be achieved over a wide space even in one compartment. It consists of a plurality of forms. To this end, each satellite 114 basically includes an air filter (not shown), and a separate blower (not shown) may be provided to reinforce the blowing pressure of the blower provided in the main body 112 . there is. The air filter provided in the satellite 114 also forms a part of the fine dust filter as an accessory of the air circulation system 110 like the air filter provided in the main body 112 . The satellite 114 consisting of an air filter (mainly a HEPA filter) and a blower is a device of the FFU (Fan Filter Unit) concept, and the blower can be deleted for indoor quietness, but in this case, the blower of the ventilation device body 112 is installed throughout the system. It should be able to operate the airflow.

The temperature control means 116 serves to control the outside air to a temperature suitable for the indoor living environment to convert it to supply air. This temperature control process may be generally performed before the inflow of outside air into the room, but may be configured in various forms performed after the inflow. For example, the temperature control means 116 may be any one of a cold and hot heat source for building air conditioning, an air conditioner as a cold heat source, and an ondol or a boiler as a hot heat source.

The humidifying means 118 serves to control the outdoor air to a temperature and humidity suitable for an indoor living environment to convert it to supply air. This humidification control process may be performed before or after the inflow of outside air into the room, similarly to the temperature control process. For example, the humidifying means 118 may be configured in various forms, such as a vaporization humidifier or a boiler.

The airtight system 120 means an entire device or means for indoor airtightness, and for example, in the case of a window, it may constitute a part of the airtight system 120 through a fixed type window 122 without an opening/closing function. In addition, even if it is possible to open and close in case of an emergency, airtightness can be realized with a special window of a completely sealed type. On the other hand, the door communicating with the indoor space must be able to be opened and closed frequently for the purpose of access, and in this process, a certain degree of airtightness, cleanliness, and energy loss to the indoor space are inevitable, so it is necessary to minimize this. To this end, an air shower 124 triggered by an opening operation of the door is installed on the door of the room. The air shower 124 operates in a manner to shield the indoor space by forming an air curtain by spraying high-speed air through a plurality of nozzles (not shown) installed so as to be inclined toward the room around the door. This air shower 124 provided as a part of the airtight system 120 is advantageous in terms of minimizing the problem that the residential use of the house is limited to maintain airtightness.

The operation of the clean room system 10 for a house according to the present invention is related to the operation control of the air circulation system 110 described above, and is usually a manual/local automatic operation control method or ultrafine dust response IoT according to the preference of general consumers. It may have an option that enables smart driving control by edge computing based. It is also possible to use the monitoring and control options remotely through a wireless communication type remote device. Meanwhile, the temperature control means 116 and the humidification means 118 may be simultaneously implemented in one device.

4 shows an air conditioning system diagram of the clean room system 10 of FIG. 3 . 4, outside air (EA, state ①) is the air introduced into the body 112 to be discharged to the outside of the clean room through the total heat exchange element mounted inside the body 112 of the heat recovery type ventilation device ( It recovers heat from the state ⑨) and becomes the air of the state ②. At this time, the total heat recovery efficiency by the total heat exchange element of the main body 112 is defined by the following equation.

Here, n _th is the total heat exchange efficiency, h _OA is the enthalpy of outdoor air (kJ/kg), h ₍₂₎ is the enthalpy of air in state ② (kJ/kg), and h ₍₉₎ is the enthalpy of air in state ⑨ is the enthalpy of air (kJ/kg). The total heat exchange efficiency n _th is practically always less than 1.

이고 여기서 RA는 재순환 공기량, Q₍₇₎은 상태 ⑦에서의 공기량이다. The outside air in the state ② with total heat exchange simply mixes with the recirculated air (RA, state ⑧) and becomes the air in the state ③. Here, the amount of air in the state ③ is the amount of ventilation inside the clean room, and the amount of air in the state ⑨ introduced into the ventilator body 112 for exhaust (EA, state ⑩) is the same as the amount of outside air (external intake, OA). Also, the amount of air in the recirculation air RA is greater than or equal to 0 and less than or equal to the amount of air in the state ⑦. in other words,

where RA is the amount of recirculated air, and Q ₍₇₎ is the amount of air in the state ⑦.

In the case of winter (winter), the air in condition 3 is continuously humidified by a humidifier (vaporization type humidifier or steam from a boiler), heated by a heater (boiler or heater), and is conditioned with the supply air (SA) in condition 5 and supplied to the clean room. and CR of clean room indoor air in condition ⑥ is maintained at 23±1 ^o C, 45±5 %RH temperature and humidity. Here, the order of the humidifier and heater may be changed. An air filter (usually a HEPA filter) can be installed at the recirculating air RA (state ⑧) or condition ③. The recirculated air RA may be simply mixed with the supply air SA in the state ⑤ downstream of the boiler instead of simply mixing with the state ②.

In the summer (summer), the air in condition ③ passes through the humidifier and heater that are not operating as it is, and is supplied to the clean room room as the supply air (SA) in the same condition ⑤ as in condition ③, and the air conditioner inside the clean room The indoor clean room is maintained at a temperature and humidity of 23±1 ^o C and 45±5 %RH. If there is a refrigerator in the building itself, the supply air (SA) in condition ⑤ may be put into the clean room after receiving cooling and dehumidification by the heat exchange coil.

FIG. 5 is an air diagram showing changes in temperature and humidity according to the house cleanroom system 10 of FIG. 3 . In the drawing, the control zone 1 means winter (winter), zone 2 means the middle season (interseason), and zone 3 means summer (summer), respectively. In addition, the state ① in the figure represents the outdoor air (OA) conditions of each season representatively. These areas correspond to independent control areas that change depending on the condition of the outside air to operate the air conditioning system of the clean room for general buildings. In FIG. 5 , each operation control area should be classified under the following conditions by two dotted lines. Classify by referring to the thermodynamic state quantity for the case where the temperature and humidity state ⑥ of clean room indoor air CR is 23 ^o C, 45 %RH.

(a) First, the control area 3 corresponding to the summer is an area with absolute humidity greater than 7.86 g/kgDA (Dry Air) in the state ① of the outdoor air (OA) in the state of CR ⑥, that is, the area requiring dehumidification. am. The dotted line branching from the state ③ in FIG. 5 is intended to represent the actual path to the state ⑥ as a reference. On the other hand, since the total heat exchange efficiency of the external air is less than 1 for the change from state ① to state ②, the enthalpy of state ① and state ⑥ (original state ⑨, state ⑥, ⑦, ⑧, ⑨ are the same in the ideal (design) case) At any enthalpy point between the enthalpies of ), state ② will be formed. Here, the state ⑥ is the same as the state ⑨ flowing into the ventilator body 112 from Figure 6. Also, since the change from state ② to state ③ is a simple mixture, it is determined by interpolation for each air volume on a straight line connecting state ② and state ⑥.

(b) Next, in area 1 representing the winter season, two conditions must be satisfied simultaneously. The first condition is an area in which the absolute humidity of external air (OA) ① is less than 7.86 g/kgDA (dry air) in absolute humidity ⑥ of CR, that is, an area that requires humidification. The second condition, together with the first condition, is a state in which this outdoor air is simply mixed with the recirculated air (RA) after passing through the ventilator body 112. ③ The enthalpy in this state ⑥ is an area with an enthalpy smaller than 43.15 kJ/kgDA. . In the figure, the enthalpy line is indicated by the red slanted dotted line.

(c) Finally, region 2 representing the intermediate season (interseason) is a region other than the above. The reason for dividing region 1 and region 2 by the enthalpy line of state ⑥ of CR is that the air in state ③ after simple mixing undergoes adiabatic humidification, that is, isoenthalpy process, which is an air conditioning process in the humidifier, whereas region 1 requires heating. Because zone 2 needs cooling.

As described above, according to the house cleanroom system 10 according to the present invention, in a state where the complete system sealing including the air shower installed on the door is made, the fine dust filtering function composed of the main body 112 and/or the satellite 114 The ventilation function is performed using the provided heat recovery ventilation device, but heat sources such as humidifiers and cold and hot heat sources necessary for constant temperature and humidity of the indoor air are used as heat sources such as boilers or air conditioners that are already installed. Compared to the system, it is possible to minimize the increase in installation and construction-related work and costs and maximize operating energy savings, so it can be advantageously applied to general buildings, especially existing educational facilities, public facilities, residential facilities, and offices without ventilation facilities. .

The above description relates to specific embodiments of the present invention. As described above, the embodiments according to the present invention are disclosed for the purpose of explanation and are not to be construed as limiting the scope of the present invention, and those of ordinary skill in the art will not depart from the essence of the present invention. It should be understood that various changes and modifications are possible. Accordingly, all such modifications and variations can be understood as falling within the scope of the invention disclosed in the claims or equivalents thereof.

10: Cleanroom system
110: air circulation system
112: heat recovery type ventilation device body
114: heat recovery type ventilation system satellite
116: temperature control means
118: humidification means
120: confidential system
122: fixed through window
124: air shower

Claims (10)

an air circulation system in which outdoor air (OA) is air-conditioned and supplied to the room as SA; and a sealing system for shielding the room from the outside, wherein the air circulation system includes at least one of a fine dust filter means for the outside air, a temperature control means, and a humidification means. . The clean room system for a house according to claim 1, wherein the air circulation system is configured in any one of a heat recovery type ventilation device, an outdoor air conditioner for building air conditioning, and a centralized air conditioner. [3] The clean room system for a house according to claim 2, wherein the heat recovery type ventilation device is composed of a main body and a satellite body. The clean room system for a house according to claim 3, wherein the main body includes a total heat exchanger, a blower, and an air filter, and the air filter is provided as the fine dust filter means. The clean room system for a house according to claim 3, wherein the satellite includes a blower and an air filter, and the air filter is provided as the fine dust filter means. The clean room system for a house according to claim 1, wherein the temperature control means comprises at least one of a cold and hot heat source for building air conditioning, an air conditioner as a cold heat source, and an ondol or a boiler as a hot heat source. The clean room system for a house according to claim 1, wherein the humidifying means is an evaporative humidifier or a boiler. According to claim 1, wherein the recirculated air is a clean room system for a house, characterized in that the supply air is supplied to the room by joining the outdoor air before or after the air conditioning. The clean room system for a house according to claim 1, wherein the sealing system includes an air shower installed on a door. The clean room system for a house according to claim 1, wherein the sealing system comprises a fixed through window.

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