The hospital room with air cleaning technology as the main guarantee condition to make the quantity of dust and bacteria in the indoor air meet certain standards is the hospital clean room.
The air filtration technology, which uses air to block dust particles and bacterial particles with certain size, and air distribution with certain air volume or wind speed and indoor pressure gradient control, is used to maintain the number of indoor particles at a certain level, that is, air cleaning technology.
According to the above characteristics, the hospital clean room should be designed according to the specifications of clean room and the characteristics of different clean rooms. Pay attention to people, logistics procedures, air distribution (avoid cross infection), temperature and humidity control, etc. Clean room is a system with large floor area and large energy consumption. Therefore, reasonable selection and configuration can achieve the expected purpose.
1. Choice of clean room in hospital
At present, according to the specific situation and relevant standards of hospitals in China, referring to foreign experience, the application of clean room has been extended to many departments of hospitals. For example: clean operation Department; special ward (leukemia laminar flow ward, burn ward, asthma room, etc.); nursing unit (intensive care unit ICU, CCU, NICU, etc.); central supply room (sterile storage area); dispensing center; important laboratory (special laboratory, life science laboratory (such as reproductive center, etc.), animal room, important biosafety system), precision New instrument room, clean auxiliary room (sterile auxiliary material room, disposable goods room, etc.).
In the design stage of new construction and reconstruction, the hospital should fully study and analyze the specific situation of the hospital and reasonably select clean rooms. Because the clean rooms need to be equipped with corresponding auxiliary rooms, such as men's and women's changing rooms, bathroom rooms, buffer rooms, clean supplies, special dirt channels, clean air conditioning rooms and cold and heat source systems, etc., which need to occupy the building area, the overall plan should be made in the design stage The reasonable space and location shall be reserved to avoid the layout of the purification room in the later stage, resulting in insufficient area, imperfect purification process and insufficient protection of the stability of the cleanliness and pressure difference of the core area. Air conditioning system layout space is insufficient, the system is not smooth, resulting in energy loss, noise bidding and other issues. Also for the future maintenance caused difficulties, can not give full play to the function of the clean room.
2. Air conditioning system configuration of clean room
According to its characteristics, the air conditioning system of hospital clean room is a constant temperature and humidity system (cold and heat resistance). In order to achieve the corresponding cleanliness, a multi-stage filter is set up, which increases the resistance of the system. Therefore, it is a system with large energy consumption. Energy saving design of the system is very important, which should be paid more attention to.
China green hospital building evaluation standard proposed that "for clean operation Department and other clean air conditioning systems, technical measures should be taken to reduce electric reheat power by 50% compared with primary return air system." Opinion. According to our experience, the following methods are adopted for clean air conditioning system to achieve energy saving and environmental protection.
Cold and heat sources:
1) the operating room, ICU, laminar flow ward and other clean rooms running 24 hours a year should be separately equipped with cold and heat sources and separated from the building system.
2) ground source heat pump system can be used if conditions permit.
Clean air conditioning unit:
1) select medical clean air conditioning unit with reliable and mature technology; low noise, structure shockproof, bridge breaking and condensate structure are reasonable to prevent reinjection and facilitate the cleaning of surface cooler and filter.
2) configuration of frequency converter and frequency conversion fan.

3) equipped with reliable automatic control system, it can realize automatic and manual conversion.

System design:
1) the air duct system shall be as short and smooth as possible, and low resistance type shall be selected to reduce elbow and various filters to reduce system resistance.
2) the deep dehumidification scheme is adopted for the fresh air unit, and the secondary return air system can be adopted for the fresh air from the self-service unit to reduce the cold heat confrontation and achieve the purpose of energy saving.
3) exhaust system: for the air conditioning unit with centralized layout and large exhaust air volume, the heat recovery system can be considered, and the fresh air can be pretreated with exhaust air through heat exchange, but the effective measures to prevent cross pollution shall be calculated. The waste gas with environmental pollution can only be discharged if it is filtered by an effective filter. Pay special attention to the outlet of exhaust air and keep a distance from the fresh air inlet. According to the specification: the fresh air port shall be set at a clean area 5m above the ground, 3M above the air outlet in the horizontal direction, and on the windward side of the air outlet without interference of pollution sources.
3. Other facilities in clean room
As the clean room is a relatively closed space, the lighting requirements for the room are relatively high. In order to save energy, natural light sources should be used as much as possible in the design.
For the lighting system, the intelligent control system is adopted, which is adjusted according to the demand. Choose efficient and energy-saving light source (such as LED, etc.).
For areas with conditions, solar photovoltaic power generation system can be used alternately with public power supply system.
Shandong ed purification Engineering Co., Ltd., founded in August 2010, has been committed to the construction of special departments in the hospital for ten years. It is a professional enterprise engaged in purification of clean operating department, decoration of clean operating room, construction of ICU ward, construction of neonatal NICU, CCU ward, hospital laboratory, decoration of central supply room, construction of laminar flow ward and design and construction of vein configuration center. The main service object is a large, medium and small hospital, which has the qualification of professional contracting related to purification engineering. There are many industry cases. Welcome new and old customers to come for consultation. For more knowledge of medical purification industry, please pay attention to WeChat public address: Aide-188 (Ed purify oxygen supply).