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Hospital decontamination
  • Medical purification air conditioning system design decoration

Medical purification air conditioning system design decoration

Hospital laminar flow operating room on the clean area of the rapid rise and fall of air conditioning and refrigeration has a special requirement, as long as the operating room because of its large amount of operation caused by air conditioning system overload operation, and maintenance time is uncertain, to ensure that the patient during surgery The safety of surgery reduces the risk of cross infection. Therefore, the surgical environment must be strictly controlled, with the purification of air conditioning system, the ventilation and pressure regulation, so that the entire operating room can be presented in the controlled state.
  • Case Introduction
  Laminar Operating Room - Design of Air Conditioning System for Medical Purification Project

  Hospital laminar flow operating room on the clean area of the rapid rise and fall of air conditioning and refrigeration has a special requirement, as long as the operating room because of its large amount of operation caused by air conditioning system overload operation, and maintenance time is uncertain, to ensure that the patient during surgery The safety of surgery reduces the risk of cross infection. Therefore, the surgical environment must be strictly controlled, with the purification of air conditioning system, the ventilation and pressure regulation, so that the entire operating room can be presented in the controlled state.

医院手术室空调设计方案

 
 
1, hospital engineering operation clean area air conditioning system design requirements

  Based on the characteristics of surgery, the number of surgery and the operating room environment requirements, a reasonable choice of cold and heat sources is necessary for air conditioning conditions. In the early stage of the design of the surgical clean area, not only the winter and summer design conditions, but also taking into account the spring and autumn transition season system operation on the cold and heat source needs, the hospital's large system and the operation of the small system together. Summer, by the underground chillers supply cold water; winter, by the boiler room municipal hot water through the plate after the exchange of hot water supply. In both to ensure the safety of the operating room under the premise of energy efficiency can also reflect.

  2, the rational allocation of fresh air units and recycling units, looking for the best way to deal with air

  As the operating room has an independent special nature, each operating room need to set a separate purification cycle unit, every 3 to 5 operating room can share a set of fresh air system. Fresh air system is mainly responsible for dehumidification task, not only to eliminate the new wind of their own high humidity, but also to eliminate the indoor moisture capacity. Another function of the fresh air unit is to maintain the positive pressure distribution throughout the operation. While the cycle unit is the burden of indoor heat load to meet the cleanliness requirements. This setting allows the surgical department to be in a controlled state and is very stable and reliable to operate. But also to achieve humidity priority control. Do a good job of humidity control, will be able to air bacteria and virus survival time control in a short range. Studies have shown that when the indoor relative humidity control in 30% to 60%, can reduce the possibility of indoor infection.

  3, a reasonable set of installed processing room of air conditioning equipment, control of clean room constant temperature and humidity

  In the installation of operating room air conditioning system at the same time, also consider the operating room installation chamber temperature and humidity requirements. General operating room installed machine room requirements constant temperature and humidity, the temperature is 21 ~ 27 ° C, humidity 50%; hybrid operating room installation machine room temperature does not exceed 35 ° C, humidity is 50%. Not only to the room temperature and humidity treatment, but also to ensure that the operating room constant temperature and humidity state. So choose the right constant temperature and humidity air conditioning on the room for cooling treatment, is also a very important part.
   In summary, the ventilation and air conditioning system suitable for clean surgical areas should meet the following requirements: the rapid cooling requirements during surgery; the Ministry of Surgery in the transition season of the cold and hot source supply; installed processing room temperature requirements; clean operating room Negative pressure requirements; clean operating room fresh air volume requirements; clean operating room air distribution requirements; clean operating room ventilation and air conditioning system automatic adjustment requirements.

  4, clean operating room room level standard (empty or static)

Clean room level

Sedimentation method (floating method) maximum bacterial average concentration

Air cleanliness level

Reference surgery

Surgery area

Surrounding area

Surgery area

Surrounding area

0.2cfu/30min·

Φ90皿(5cfu/m3)

0.4 cfu /30min·

Φ90皿(10cfu/m3)

5

6

Prosthesis implantation, some large organ transplantation, surgical site infection can directly endanger life and quality of life and other operations

0.75 cfu /30min·

Φ90皿(25cfu/m3)

1.5 cfu /30min·

Φ90皿(50cfu/m3)

6

7

Involving large organizations and major organs of life major surgery

2 cfu /30min·

Φ90皿(75cfu/m3)

4 cfu /30min·

Φ90皿(150cfu/m3)

7

8

Other Surgery

6cfu/30min·Φ90皿

8.5

Infection and severe contaminated surgery

Note: 1. The maximum mean concentration of bacteria in the planktonic process is in parentheses. Bacterial concentration is the result of direct measurement, not the settlement method and the floating method of mutual conversion results. 2. Ophthalmic surgery room peripheral area than the surgical area can be low 2.

5, clean auxiliary room rating (empty or static)

Clean room level

Sedimentation method (floating method) maximum bacterial average concentration

Air cleanliness level

Localized air supply area:0.2个/30min·Φ90Dish(5cfu/m3),Other areas:0.4个/30min·Φ90Dish(10cfu/ m3)

Local level 5, other areas 6 level

1.5cfu/30min·Φ90Dish(50cfu/m3)

7 level

4cfu/30min·Φ90Dish(150cfu/m3)

level

6cfu/30min·Φ90Dish

8.5 level

Note: The maximum mean concentration of bacteria in the swim method is in parentheses. Bacterial concentration is the result of direct measurement, not the settlement method and the floating method of mutual conversion results.