KR100886561B1 - Airconditioning system for operating room - Google Patents

Abstract

An air conditioning system for operation room is provided to lengthen the service life of the filter, to perform both cooling and heating, and to keep the air in the operation room highly clean regardless of season. An air conditioning system for operation room comprises a first volume damper(111) controlling the amount of air flowing in from outside through a first inlet(110), a second volume damper(121) controlling the amount of air flowing in from the plenum space through a second inlet(120), and a plurality of filters(133,313,333) filtering the air flowing in through the first and second inlets. The filtered air is temperature-controlled through a plurality of indoor heat exchangers and then supplied to an operation room. As the opening degree of the second volume damper is in inverse proportion to the opening degree of the first volume damper, the whole inflow rate of the air is maintained.

Description

Air Conditioning System for Operating Room {AIRCONDITIONING SYSTEM FOR OPERATING ROOM}

The present invention relates to an operating room air conditioning system, and more particularly, to an operating room air conditioning system in which surgery requiring high cleanliness is performed.

Indoor air in medical institutions needs a certain level of cleanliness. This is because a variety of viruses or pathogens originating from patients with certain diseases are likely to spread through the indoor air of medical institutions and to be transmitted or cross-infected with medical staff or other patients.

Therefore, the patients with reduced body immunity, the intensive care unit and the neonatal room, which are spaces where the newborn stays, and the operating room where the patient's internal tissues are exposed to the air should be kept in a clean state to prevent infection of the patient.

In particular, when orthopedic surgery or neurosurgery, in which surgical invasion is large or a large amount of foreign substances are inserted into the patient's body, such as artificial joint surgery and organ transplant surgery, is performed in a very high operating room. Clean air is required.

In addition, by keeping the patient's body temperature low, it is possible to increase the resistance to hypoxia of important organs and to suppress unnecessary biological reactions. In order to perform hypothermia to reduce the temperature of the operating room should be kept low. At present, hypothermia or hypothermia is usually performed while the operating room temperature is about 18 to 20 degrees Celsius.

By the way, in the conventional operating room air conditioning system to maintain the temperature of the operating room in the above-described range, by using a cooling device in the summer season and heating equipment such as a boiler in the winter season to adjust the temperature of the air supply to the operating room Used. That is, since the air conditioner and the heating device had to be used in combination, the air conditioner and the heating device occupy a lot of space, and in the season with a large crossover, there was a problem of using the air conditioner and the heating device at the same time.

In particular, when using a cooling device using a coolant in the summer season, when the size of the operating room is large, it was often difficult to maintain the temperature inside the operating room below 20 degrees Celsius.

In addition, when the concentration of fine dust in the air, such as yellow dust phenomenon is greatly increased, the life of the filter of the operating room air conditioning system is quickly shortened or blocked, the operation is unstable or stopped.

The present invention can perform both cooling and heating with one air conditioning system, and can provide high clean air to the operating room while delaying shortening the life of the filter even in weather conditions such as yellow dust or increased atmospheric dust. It provides an air conditioning system for the operating room.

According to the present invention, a heat pump including a compressor, a switching valve, a plurality of indoor heat exchangers, an outdoor heat exchanger and an expansion valve, and a plurality of ducts and a plurality of fans are provided in an operating room air conditioning system. A first intake port through which air outside the building enters, a first volume damper controlling an amount of air flowing into the first intake port, a second intake port through which air in a plenum space of the building enters, and a second A second volume damper for adjusting the amount of air introduced into the intake port, and a plurality of filters for filtering the air introduced through the first intake port and the second intake port, wherein the air filtered by the plurality of filters includes: The temperature is controlled by the heat exchanger and supplied to the operating room, and the opening of the second volume damper is inversely proportional to the opening of the first volume damper. But it is constant in the total amount of air which air is flowing, the composition ratio is provided only Operating room air conditioning system characterized in that the adjustment.

The air conditioning system for the operating room may further include a humidity sensor installed in the operating room to measure the humidity of the air. In addition, the operating room may further include a humidifier that is operated or stopped according to a signal output from the humidity sensor. The humidifier may be an electron electrode bar humidifier.

One of the plurality of filters may be a HEPA filter (hereinafter referred to as a HEPA filter). And, the other one of the plurality of filters may be used an enzyme filter. Hepa filter and enzyme filter may be detachably installed on the ceiling of the operating room.

The air conditioning system for the operating room may further include a temperature sensor installed in the operating room to measure the temperature of the air. The heat pump may be operated or stopped according to the signal output from the temperature sensor. The rotation speed of the plurality of fans may vary according to the signal output from the temperature sensor.

R-410A can be used as the working fluid of the heat pump.

In the air conditioning system for the operating room, a disinfection and exhaust device for disinfecting and deodorizing the air inside the operating room to be discharged to the outside of the operating room may be further installed. The disinfecting exhaust apparatus may further include a carbon dioxide sensor for measuring the concentration of carbon dioxide contained in the air inside the operating room.

Operating room air conditioning system according to the present invention is a single air conditioning system can maintain a constant temperature of the air in the operating room irrespective of the season, high cleanliness in the operating room even under adverse conditions such as yellow dust phenomenon or increased fine dust in the atmosphere It can provide air.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

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

1 and 2 is a schematic diagram illustrating an air conditioning system for an operating room according to an embodiment of the present invention. 1 and 2 are originally one diagram, and the components indicated by ①, ②, ③, ④, and ⑤ in FIG. 1 are connected to the components indicated by ①, ②, ③, ④, and ⑤ in FIG. .

1 and 2, the air conditioning system for an operating room according to an embodiment of the present invention includes an outdoor unit 200, 201, an outside air treatment unit 310, 330, a clean unit 500, a volume damper, 111, 121, filters 133, 313, 333, 513, 533, fans 113, 123, 312, 332, 512, 532, 551, 551a, and the like.

A portion of the building (not shown) provided with the operating room 700 is formed with a first intake port 110 to allow air outside the building (not shown) to flow in. The first intake port 110 is connected to one end of the duct 101 inside the building (not shown). The other end of the duct 101 is connected to one end of the duct 103. A first volume damper 111 and a fan 113 are installed between both ends of the duct 101.

The second intake port 120 is installed in a plenum space (not shown) of a building (not shown), and one end of the second duct 102 is connected to the second intake port 120. Therefore, air in the plenum space (not shown) flows into the second intake port 120. The other end of the duct 102 is connected to one end of the duct 103 together with the other end of the duct 101. A second volume damper 121 and a fan 123 are installed between both ends of the duct 102.

Here, the plenum space of a building is not a space occupied by a person, but an air conditioning device for cooling and heating or ventilation of a building, wiring for an electrical device such as lighting, piping for a water supply pipe, a drain pipe, or the like is installed. Say space.

In addition, the first volume damper 111 and the second volume damper 121 may allow a driving device (not shown) such as a motor to adjust the amount of intake air by adjusting the opening and closing degree of the damper. Since the volume dampers 111 and 121 are well known to those skilled in the art, a detailed description thereof will be omitted.

The other end of the duct 103 is connected with one end of each of the two ducts 104 and 104a. Between both ends of the duct 103, the first filter 133, through which air passing through the duct 103 is filtered, is easily installed. As the 1st filter 133, the filter which removes comparatively large particle contained in air like the filter produced using irradiation, for example is used. Here, it is well known to those skilled in the art that the filter is easily installed to replace a part of the duct, so a detailed description thereof will be omitted.

The other end of the duct 104 is connected to one side of the first outside air treatment unit 310. The heat exchanger 311, the second filter 313, and the blower 315 are installed in the first outside air processing unit 310. One side of the duct 105 is connected to the other side of the first outside air treatment unit 310.

The other end of the duct 104a is connected to one side of the second outside air treatment unit 330. The heat exchanger 331, the second filter 333, and the blower 335 are installed in the second outside air processing unit 330. One side of the duct 105a is connected to the other side of the second outside air treatment unit 330.

The second filters 313 and 333 are easily installed in the first outside air processing unit 310 and the second outside air processing unit 330, respectively. The second filters 313 and 333 may be used to remove particles contained in the air but to remove particles smaller than the first filter 133.

Each other end of the duct 105, 105a is connected to one end of the duct 106. Fans 312 and 332 are provided between both ends of the ducts 105 and 105a, respectively.

Noise may be generated by the blowers 315 and 335 in the first outside air processing unit 310 and the second outside air processing unit 330. Accordingly, in order to maintain quietness of the operating room 700, the first outside air processing unit 310 and the second outside air processing unit 330 may be installed at a place slightly spaced from the operating room 700 in a building (not shown). Can be.

The other end of the duct 106 may extend to the operating room 700 near. The other end of the duct 106 is connected with one end of each of the ducts 107 and 107a.

The other end of the duct 107 is connected to one end of the ducts 108 and 109, and the other end of the duct 107a is connected to one end of the ducts 108a and 109a. The differential pressure dampers 402 and 404 are respectively provided between both ends of the ducts 107 and 107a.

A portion between the portion where the differential pressure damper 402 of the duct 107 is installed and the other end of the duct 107 is connected to the fan 512 installed in the clean unit 500 by both ends of the duct 514. The duct 107a is also connected to a fan 532 installed in the clean unit 500 by a portion between the portion where the differential pressure damper 404 is installed and the other end of the duct 107a by both ends of the duct 514a. Differential pressure dampers 403 and 405 are provided between both ends of the ducts 514 and 514a, respectively.

The clean unit 500 is installed on the ceiling of the operating room 700. The inside of the clean unit 500 is separated on both sides, one side of the fan 512, the heat exchanger 511, the blower 515 and the third filter 513 is installed, the other side the fan 532, A heat exchanger 531, a blower 535, and a third filter 533 are provided. The third filters 513 and 533 are easily installed in the clean unit 500. As the third filters 513 and 533, a hepa filter, an ULPA filter, or the like, may be used.

Here, hepa filter refers to a filter made of filter paper made of asbestos fibers, which are known specially charged fibers, as a high-efficiency filter for filtering contaminated dust and minute harmful bacteria. Hepa filter has strong adsorption power, and can clean up to 99.987% of fine particles of 0.3 micrometer diameter which is known to be the most harmful to human body in addition to harmful bacteria such as house dust mite, virus and mold. In addition, the Ulpa filter refers to a filter capable of filtering at least 99.99997% of ultrafine particles having a size of 100 nanometers.

In addition, an enzyme may be added to the HEPA filter to remove a virus causing Severe Acute Respiratory Syndrome (SARS).

Exhausts 571 and 572 are formed below the wall surface inside the operating room 700. The other end of the duct 109 is connected to the exhaust portion 571, and one end thereof is connected to the other end of the duct 107 and one end of the duct 108 as described above. The other end of the duct 109a is connected to the exhaust part 572, and one end thereof is connected to the other end of the duct 107a and one end of the duct 108a as described above.

Each other end of the duct 108, 108a is connected to an exhaust port 555, 555a which is formed separately or together on an outer portion of the building (not shown), and a fan 551 between each end of each of the duct 108, 108a. , 551a) and disinfection deodorizers 553 and 553a are respectively installed.

One end of the duct 901 is connected to the bottom surface of the operating room 700 or a wall near the bottom surface, and the other end is connected to the corridor 900 or the front room (not shown) for entering the operating room 700. Connected. A differential pressure damper 902 is provided between both ends of the duct 901.

Meanwhile, the outdoor units 200 and 201 are installed outside the building (not shown). Although not shown, the outdoor units 200 and 201 each include a compressor and an outdoor heat exchanger.

A compressor (not shown) and an outdoor heat exchanger (not shown) built in the outdoor unit, a heat exchanger 311 installed in the first outside air treatment unit 310, and a heat exchanger 331 installed in the second outside air treatment unit 330. ), The heat exchangers 511 and 531 installed in the clean unit 500 and the working fluid line 210 which is a flow path of the working fluid between the components, and the switching valves 317 and 337 installed in the working fluid line 210. 517, 537 and expansion valves 319, 339, 519, 539, the working fluid circulation system is a heat pump (heat pump).

Fans 512 and 532, heat exchangers 511 and 531, blowers 515 and 535 installed in the outdoor units 200 and 201, the first and second outdoor air treatment units 310 and 330, and the clean unit 500. There are two third filters 513 and 533, respectively, and the working fluid line 210 is also installed in two circulation systems, that is, the reason why the heat pump is installed in duplicate, the reason that one heat pump is broken, etc. Even if it does not work or performance is reduced, it is possible to control the temperature of the operating room using another heat pump. Therefore, even if only one heat pump is operated, the temperature of the air inside the operating room 700 should be properly adjusted, and therefore, it is preferable to use a heat pump with sufficient capacity.

In addition, two heat pumps are installed in the operating system air conditioning system according to an embodiment of the present invention, but more heat pumps may be additionally installed in consideration of the size of the operating room 700 and the frequency of use of the operating room 700. have.

Hereinafter, the operation of the operating room air conditioning system according to an embodiment of the present invention configured as described above will be described.

Arrows shown in the working fluid line 210 of FIGS. 1 and 2 indicate the direction in which working fluid flows in the working fluid line 210. However, when the flow direction of the working fluid is changed by using the switching valves 317, 337, 517, and 537, switching to cooling and heating may be performed, and the flow may be flowed in the opposite direction to the currently displayed direction. Since the heat pump is a technique well known to those skilled in the art, a detailed description thereof will be omitted.

When a compressor (not shown) built in the outdoor units 200 and 201 is operated, heat is released or absorbed by an outdoor heat exchanger (not shown) built in the outdoor units 200 and 201.

When heat is released from an outdoor heat exchanger (not shown), heat is absorbed by the first indoor heat exchanger 311 and 331 and the second indoor heat exchanger 511 and 531. That is, the working fluid is condensed in the outdoor heat exchanger (not shown), and the working fluid is vaporized in the first indoor heat exchanger 311 and 331 and the second indoor heat exchanger 511 and 531.

On the contrary, when heat is absorbed by an outdoor heat exchanger (not shown), heat is discharged from the first indoor heat exchanger 311 and 331 and the second indoor heat exchanger 511 and 531. That is, the working fluid is vaporized in the outdoor heat exchanger (not shown), and the working fluid is condensed in the first indoor heat exchanger 311 and 331 and the second indoor heat exchanger 511 and 531.

At this time, when the heat is absorbed from the outdoor heat exchanger (not shown), the first indoor heat exchanger (311, 331) and the second indoor heat exchanger (511, 531), that is, when the working fluid is vaporized, respectively The air in the surroundings will be cooled directly. That is, a direct expansion cooling method is applied to an operating room air conditioning system according to an embodiment of the present invention. Since the direct inflatable cooling method is well known to those skilled in the art, description thereof is omitted.

Meanwhile, the first volume damper 111 and the second volume damper 121 are opened, the fans 113, 123, 312, 332, 512, 532, 551, and 551a and the blowers 315, 335, 515, and 535. Is activated, air outside the building (not shown) is introduced through the duct 101 through the first intake port 110, and air in the plenum space (not shown) is introduced through the second intake port 120. It is introduced through the duct 102.

The air introduced into the ducts 101 and 102 passes through the first filter 133 installed in the duct 103 so that the relatively large particles contained in the air, for example, particles such as soil or holes of plants, may be first. The filter 133 is filtered.

Air passing through the first filter 133 is transferred to the first and second outside air treatment units 310 and 330 through the ducts 104 and 104a, respectively. The air introduced into the first outside air treatment unit 310 through the duct 104 passes through the first indoor heat exchanger 311, and the temperature thereof is controlled, and the first filter 133 passes through the second filter 313. Particles that are not filtered by the filter are filtered out and are introduced into the duct 105 by the blower 315. In addition, the air introduced into the second outside air treatment unit 330 through the duct 104a is controlled by passing through the first indoor heat exchanger 331 and filtered by the second filter 333. 335 flows into the duct 105a.

The air introduced into the ducts 105 and 105a flows into the duct 106. When the length of the duct 106 is long, the air flow rate may be lowered by the resistance, so the fans 312 and 332 may be installed to provide air. To facilitate flow. If the length of the duct 106 is very long, a fan, not shown, may be additionally installed.

Air moved through the duct 106 is introduced into the clean unit 500 through the duct (107, 107a, 514, 514a). The air moved through the ducts 107 and 514 passes through the heat exchanger 511 by the fan 512 and the temperature is adjusted, and then inside the operating room 700 through the third filter 513 by the blower 515. Flows into. The air moved through the ducts 107a and 514a passes through the heat exchanger 531 by the fan 532 and the temperature thereof is adjusted, and then the operating room 700 through the third filter 533 by the blower 535. ) Flows inside.

At this time, the fans 512 and 532 prevent the air flow rate from dropping by the resistance generated when the air passes through the heat exchangers 511 and 531, and the blowers 515 and 535 allow the air to pass through the third filter 513. 533) to facilitate passage. In addition, the fans 512 and 532 and the blowers 515 and 535 allow air pressure inside the operating room 700 to be somewhat higher than outside the operating room 700, which will be described below.

On the other hand, the flow of air used in the clean space includes a vertical laminar flow, horizontal laminar flow, turbulent flow or non-laminar flow, mixed flow and tunnel. In the vertical laminar flow method, air is supplied to the room through the ceiling and air is discharged from the floor to the outside. Recovery from the state is the fastest. Therefore, the vertical laminar flow method is often applied to the operating room 700.

The vertical laminar flow method is also applied to the air conditioning system for the operating room according to the embodiment of the present invention. Thus, the clean unit 500 is illustrated as being installed on the ceiling of the operating room 700.

The air introduced into the operating room 700 through the clean unit 500 is laminar flow vertically downward and moves laterally near the bottom surface to be discharged to the exhaust parts 571 and 572 formed in a part of the operating room. At this time, the height of the exhaust portion (571, 572) is to be installed lower than the operating table 705, so that the air flows vertically around the patient 701 undergoing surgery.

Air discharged through the exhaust portions 571 and 572 is moved through the ducts 109 and 109a. When the fans 551 and 551a are operated, the air moved through the ducts 109 and 109a flows into the ducts 108 and 108a and passes through the disinfection and deodorizing devices 553 and 553a. Bacteria, odor, anesthetic gas, etc., which may have been mixed while flowing inside, are removed and discharged through the exhaust ports 555 and 555a.

If surgery is to be performed in the operating room 700, the clean state and temperature of the air inside the operating room 700 should be adjusted to be suitable for the operation before the operation is started. However, since the surgery is not in progress, bacteria, dust, anesthetic gas, and the like are not generated in the operating room 700. In such a case, the air moved through the ducts 514 and 514a by stopping the operation of the fans 551 and 551a or by installing dampers (not shown) in the ducts 108 and 108a. By circulating back to the clean unit 500, it is possible to save energy.

During the process of preparing for the operation in the operating room 700 or while the operation is in progress, there is a case in which the entrance (not shown) of the operating room 700 is sometimes opened. At this time, the air outside the operating room 700 is introduced into the interior through the entrance (not shown), the cleanliness of the air inside the operating room 700 may be lowered or the temperature may be changed. Therefore, the air pressure inside the operating room 700 is maintained to be somewhat higher than the air pressure outside the operating room 700, so that the outside air does not flow into the operating room 700 when the entrance (not shown) is opened. A sufficient amount of air is supplied to the operating room 700 by using the first and second volume dampers 111 and 121, and the amount of air discharged through the exhaust ports 555 and 555a is supplied to the operating room 700. By adjusting to less, it is possible to maintain a high barometric pressure inside the operating room (700).

However, when the air pressure inside the operating room 700 is high, an entrance door (not shown) between the front room (not shown) or the corridor 900 connected to the operating room 700 may not be opened. Therefore, the differential pressure damper 902 is installed in the door (not shown) so that the pressure difference becomes small when the door (not shown) is opened so that the door (not shown) is easily opened. Since the differential pressure damper 902 is well known to those skilled in the art, a detailed description thereof will be omitted.

Meanwhile, a float such as dust or the like may be generated in the air by the patient 701 or the medical staff 703 while the surgery is in progress, or the temperature and humidity inside the operating room 700 may change. Therefore, various sensors (not shown) that can measure temperature, humidity, and cleanliness inside the operating room 700 may be installed, and the inside of the operating room 700 according to signals output from these sensors (not shown). Means for maintaining the temperature, humidity and cleanliness of the can be added.

In order to properly maintain the temperature inside the operating room 700, first the temperature inside the operating room 700 should be able to be measured. Therefore, a temperature sensor (not shown) is installed inside the operating room 700 or the clean unit 500. In this case, since the most necessary position for maintaining the temperature suitable for surgery in the operating room 700 is near the patient 701, a temperature sensor (not shown) may be installed at a portion adjacent to the patient 701, such as the operating table 705. .

In order to maintain the temperature inside the operating room 700 at a temperature suitable for surgery (hereinafter, referred to as 'suitable temperature'), the fans 113, 123, 312, 332, 512, and 532 and the blowers 315, 335, 515, and 535 Or a method of operating and stopping a compressor (not shown) built in the outdoor units 200 and 201, that is, a method of starting and stopping a heat pump.

When there is a severe temperature change inside the operating room 700 due to urgently preparing the operation, using a large number of medical staff 703 in the operation, or using medical equipment (not shown) that generates a large amount of heat. Since the temperature of the air inside the operating room 700 is to be adjusted quickly, the outdoor unit 200, while increasing the number of rotation of the fan (113, 123, 312, 332, 512, 532) and the blower (315, 335, 515, 535) All of the compressors (not shown) of 201) can be operated.

If the temperature change inside the operating room 700 is not severe and rapid cooling or heating is not necessary due to seasonal effects, the fans 113, 123, 312, 332, 512, 532 and the blowers 315, 335, 515 It is also possible to reduce the rotational speed of 535 or to operate only one of the compressors (not shown) of the outdoor units 200 and 201, that is, only one of the two heat pumps. When only one heat pump is operated, backflow of the air in the operating room 700 is prevented by the differential pressure dampers 402, 403, 404, and 405 where the air is not moved.

When the temperature of the air in the operating room 700 measured by the temperature sensor (not shown) is in an appropriate range, the rotation speed of the fans 113, 123, 312, 332 and the blowers 315, 335 may be lowered or Alternatively, the compressor may be paused and the compressor (not shown) of the outdoor units 200 and 201 may be paused. At this time, in order to keep the air pressure of the operating room 700 high, and to keep the airborne floats and dust generated during the operation, the fans 512 and 532 and the blowers 515 and 535 of the clean unit 500 are stopped. To continue operation.

On the other hand, in order to maintain the humidity inside the operating room 700 suitable for surgery (hereinafter, referred to as "suitable humidity"), the operating room air conditioning system according to an embodiment of the present invention in the humidity sensor (not shown) and A humidifier (not shown) and a dehumidifier (not shown) that can add moisture to the air inside the operating room 700 are further installed.

A humidifier (not shown) using a method of heating water may be used to prevent air from being contaminated in the process of humidifying the air inside the operating room 700. In particular, an example of a humidifier that can minimize the variation in humidity that may occur during the humidity control process and supply sterilized moisture in the air is an electronic electrode humidifier.

When a humidifier (not shown) is installed in the operating room 700, moisture to be dispersed in the air may be discharged through the exhaust parts 571 and 572 without being uniformly distributed as the air moves. Therefore, when a humidifier (not shown) is installed in the clean unit 500, the humidity of the air may be adjusted before being supplied to the operating room 700, so that the humidity inside the operating room 700 is uniform.

By the way, when the air in the operating room 700 exceeds the appropriate humidity, it is possible to remove the moisture in the air by using a dehumidifier (not shown). A dehumidifier (not shown) may also be installed in the clean unit 500 to have a proper humidity before air is supplied into the operating room 700.

Since the humidifier (not shown) and the dehumidifier (not shown) are well known to those skilled in the art, detailed descriptions thereof will be omitted.

In order to maintain the cleanliness of the air inside the operating room 700, it should be possible to measure the cleanliness of the air inside the operating room 700. The cleanliness of the air can be measured using a dust sensor (not shown). Since the dust sensor (not shown) is well known to those skilled in the art, a detailed description thereof will be omitted.

Dust sensor (not shown) is installed adjacent to the clean unit 500 of the ceiling of the operating room 700, the amount of foreign matter such as dust contained in the air supplied from the clean unit 500 to the operating room 700 It can be measured. If the foreign matter contained in the air is larger than the allowable value, the fans 551 and 551a are operated to discharge the air circulated inside the operating room through the exhaust ports 555 and 555a, and new air is introduced through the clean unit 500. can do.

Alternatively, the operation of the fans 551, 551a is stopped or the rotational speed is reduced, so that the air inside the operating room 700 circulates back to the clean unit 500 through the ducts 109, 514, 109a, and 514a to form a third unit. The cleanness may be increased by repeatedly passing the difference filters 513 and 533.

However, when the air inside the operating room 700 is recirculated for a long time, the oxygen concentration inside the operating room 700 is lowered and the carbon dioxide concentration is increased due to the breathing of the patient 701 and the medical staff 703, and thus the blood oxygen in the patient 701. The concentration may be adversely affected or the concentration of the medical staff 703 may be reduced.

On the other hand, if all the air once passed through the operating room 700 to the exhaust port (555, 555a), the fan 133, 123, 312, 332, 512, 532, 551 to continuously supply the air to the operating room 700 551a), blowers 315, 335, 515, 535 and compressors (not shown) of the outdoor units 200, 201 should be operated continuously. Therefore, a large amount of energy is consumed, and the lifespans of the primary filters 133, the secondary filters 313 and 333, and the third filters 513 and 533 are shortened. Therefore, if the amount of air newly supplied to the operating room 700 and the amount of air discharged to the exhaust ports 555 and 555a are properly adjusted, energy is saved and the primary filter 133 and the secondary filter 313 and 333 ) And the lifespan of the third order filters 513 and 533 are extended.

On the other hand, when a lot of foreign matter is contained in the air outside the building (not shown), that is, when there are a lot of yellow dust, hole seeds and pollen of plants, etc., the first filter 133, the second filter 313, 333 and the third order filters 513 and 533 may be blocked or shortened in life.

Therefore, when the air outside the building (not shown) is severely contaminated or a large amount of foreign matter is mixed in the air, the amount of outside air flowing through the first intake port 110 may be reduced. The first volume damper 111 and the second volume damper 121 are increased so that the amount of air in the plenum space (not shown) of the building (not shown) that is reduced and flows in through the second inlet 120 is increased. I can regulate it.

That is, the first volume damper 111 may be closed or only partially opened, and the second volume damper 121 may be fully open or partially opened in inverse proportion to the degree of opening of the first volume damper 111. Therefore, the total amount of air introduced through the first intake port 110 and the second intake port 120 is constant, but the amount of air outside the building (not shown) and the composition ratio of air in the plenum space (not shown). Only can be adjusted.

Compared to the air outside the building (not shown), the air in the plenum space (not shown) is relatively less polluted or contains less foreign matter. Thus, by temporarily using air in the plenum space (not shown) in the operating room air conditioning system according to an embodiment of the present invention, the primary filter 133, the secondary filter 313, 333 and the first filter It is possible to prevent the tertiary filters 513 and 533 from being blocked or shortened in life.

Operating system air conditioning system according to an embodiment of the present invention can be largely divided into two systems. One is a system for heating and cooling using a heat pump as described above, the other is a fan for purifying the air outside the building (not shown) or plenum space supplied to the operating room 700 and back to the outside of the building ( 133, 123, 312, 332, 512, 532, 551, 551a, first volume damper 111, second volume damper 121, primary filter 133, secondary filter 313, 333 , Third filter 513, 533 and blowers 315, 335, 515, 535 and the like.

The heating and cooling system and the ventilation system using the heat pump may be separately controlled, but the temperature, humidity, cleanliness, and air circulation required according to the situation such as the number of medical staff 703 in the operating room 700 and the type of surgery performed. Since conditions such as speed may vary, there is an advantage that more accurate air conditioning is possible when controlled by one controller (not shown).

Therefore, the operating room air conditioning system according to an embodiment of the present invention receives the necessary conditions by the user, and input from a temperature sensor (not shown), humidity sensor (not shown), dust sensor (not shown), etc. By analyzing the signal, the degree of opening of the first volume damper 111 and the second volume damper 121 is adjusted, and the fans 133, 123, 312, 332, 512, 532, 551, 551a and the blower ( It controls the rotation speed of the 315, 335, 515, 535, respectively, and operates and stops the compressor (not shown), the humidifier (not shown) and the dehumidifier (not shown) of the outdoor unit 200, 201. A control device (not shown) capable of controlling under optimum conditions may be used. As a controller (not shown), a computer (not shown) in which a control program for optimal control is installed may be used.

In an air conditioning system for an operating room according to an embodiment of the present invention, the air supplied to the operating room 700 may be supplied twice by the first indoor heat exchangers 311 and 331 and the second indoor heat exchangers 511 and 531. Adjust the temperature over.

The reason is that the first indoor heat exchanger (311, 331) to adjust the temperature of the air primarily, the second indoor heat exchanger (511, 531) to adjust the remaining temperature more accurate temperature control is possible. Because. In addition, when the distance between the first outside air treatment unit 310 and the second outside air treatment unit 330 and the clean unit 500 is far, the temperature of the air is accurately adjusted by the first indoor heat exchanger 311 and 331. Even if the temperature of the air moved to the second indoor heat exchanger (511, 531) through the duct (105, 105a, 106, 107, 107a).

On the other hand, the operating fluid of the operating room air conditioning system according to an embodiment of the present invention may be used a general refrigerant such as R-22, it may be used an environmentally friendly refrigerant such as R-410A. However, R-410A rarely destroys the ozone layer even when leaked due to an accident, and has the advantage of less impact on global warming than conventional refrigerants.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below. It will be understood that modifications and changes can be made.

1 and 2 is a schematic diagram showing an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

101, 102, 103, 104, 105, 106, 107, 108, 109, 514: Duct

113, 123, 312, 332, 512, 532, 551: fan

315, 335, 515, 535: Blower 110: First intake port

111: first volume damper 120: second intake port

121: second volume damper 133: primary filter

200, 201: outdoor unit 311, 331: primary indoor heat exchanger

313, 333: secondary filter 402, 403, 404, 405: differential pressure damper

511, 531: 2nd indoor heat exchanger 515, 535: 3rd filter

700: operating room

Claims (13)

In a heat pump including a compressor, a switching valve, a plurality of indoor heat exchangers, an outdoor heat exchanger and an expansion valve, and a plurality of ducts and a plurality of fans, A first intake port through which air outside the building having an operating room is introduced; A first volume damper adjusting an amount of air introduced into the first intake port; A second intake port through which air in the plenum space of the building flows; A second volume damper adjusting an amount of air introduced into the second intake port; And A plurality of filters for filtering the air flowing through the first inlet and the second inlet, The air filtered by the plurality of filters is supplied to the operating room with a temperature controlled by the plurality of indoor heat exchangers, the opening degree of the second volume damper is inversely proportional to the opening degree of the first volume damper. And, the total amount of air flowing in the air outside the building and the air in the plenum space of the building is constant, the air conditioning system for the operating room, characterized in that only the composition ratio is adjusted. The method of claim 1, And when the yellow dust is included in the air outside the building, the first volume damper is completely closed and the second volume damper is completely open. The method of claim 1, Is installed in the operating room air conditioning system for the operating room further comprises a humidity sensor for measuring the humidity of the air. The method of claim 3, Air conditioning system for the operating room further comprises a humidifier that is operated or stopped according to the signal output from the humidity sensor. The method of claim 4, wherein The humidification device is an air conditioning system for an operating room, characterized in that the electron electrode bar humidifier. The method of claim 1, One of the plurality of filters is an air conditioning system for an operating room, characterized in that the hepa filter. The method of claim 6, And one of the plurality of filters is an enzyme filter. The method of claim 7, wherein The HEPA filter and the enzyme filter is operating room air conditioning system, characterized in that detachably installed on the ceiling of the operating room. The method of claim 1, Is installed in the operating room air conditioning system for the operating room further comprises a temperature sensor for measuring the temperature of the air. The method of claim 9, Operating room air conditioning system, characterized in that the heat pump is operated or stopped according to the signal output from the temperature sensor. The method of claim 9, Operating system air conditioning system, characterized in that the rotation speed of the plurality of fans is changed according to the signal output from the temperature sensor. The method of claim 1, The operating fluid of the heat pump is an operating system for the operating room, characterized in that the R-410A. The method of claim 1, And an antiseptic deodorizing device for disinfecting and deodorizing the air inside the operating room and discharging it to the outside of the operating room.

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