Constant temperature and humidity laboratory project refers to a package project that can be used to limit and control the temperature, humidity, cleanliness range and control accuracy, so as to keep the temperature and humidity of the system in balance in any room or space to be measured. The laboratory has arranged an efficient and safe air purification system in the operating room to ensure the aseptic environment of the operating room, which can meet the high aseptic environment required for organ transplantation, heart, blood vessels, artificial joint replacement and other operations.

It is a powerful measure to ensure the sterile environment of general operating rooms to adopt efficient and low-toxic disinfectants and use them reasonably. Different levels of laminar flow operating rooms in the laboratory have different air cleanliness standards. For example, the domestic standard I laminar flow operating room has a cleanliness level of 5, and the number of dust particles per cubic foot is ≥0.5μm, and the number of dust particles per liter is ≤ 100 or ≤3.5.

The standard of secondary laminar flow operating room is cleanliness level 6, with dust particles ≥0.5μm per cubic foot of air ≤ 1000 or ≤35 per liter of air. The standard of three-level laminar flow operating room is cleanliness level 7, with air dust particles ≥0.5 μm≤ 10000 per cubic foot or ≤352 per liter. And so on.

Laboratory purification ensures that the cleanliness of the operating table reaches the standard. Generally, the laminar flow operating room with good vertical laminar flow effect is a positive pressure environment, and its air pressure changes according to the cleanliness requirements of different areas (such as operating room, aseptic preparation room, hand brushing room, anesthesia room and surrounding clean area).

It involves a series of engineering fields, such as decoration, moisturizing, heat preservation, precision air conditioning, fresh air ventilation, power supply, automatic control, environmental detection and so on. The requirements for the construction of a constant temperature and humidity laboratory are as follows:

1, laboratory decoration

Strict heat insulation and moisture resistance are required. It is suggested that the four facades of the laboratory should be made of color steel composite board, and the upper and lower surfaces should be made of PE insulation board for heat preservation and moisture insulation. For perspective windows, double-layer vacuum glass windows are needed.

2. Laboratory air conditioning

Laboratory air conditioning is the heart of temperature and humidity control, which requires high accuracy and low failure rate. Therefore, the air conditioner must be required to adjust the cooling capacity. At present, there are two ways in the market: frequency conversion regulation and chilled water regulation.

3. Frequency conversion adjustment

In fact, it is to change the power of the compressor by changing the nature of the power supply, so that the compressor can work under low load or overload, and at the same time adjust the flow saving of the refrigeration system. Therefore, a large number of tedious links must be added, and each link must be perfectly matched, otherwise it will fail.

4. Frozen water device

The cold water of about 7℃ is used as the cold source, and the water flow is controlled by opening or closing the electric valve, so that the refrigeration capacity can be easily controlled. The structure of electric valve is as simple as household faucet, so the failure rate is almost zero.

5, ventilation mode

The ventilation mode has gone through several historical stages, from the initial bottom air supply, to the upper natural air supply, to the upper diffuser air supply, to the most advanced upper air duct microporous ceiling air supply, and then to the lower return air mode. The air supply in the whole laboratory is soft and uniform, and the temperature and humidity control is very stable.

6. Fresh air system

The function of fresh air system is to provide physiological fresh air for staff, which is not only conducive to the stability of temperature and humidity in the laboratory, but also an indispensable equipment in the laboratory. In order to make the laboratory free from external interference, it is necessary to provide fresh air to the laboratory, keep the laboratory at a positive pressure, prevent external air from entering the laboratory, and ensure the long-term stability of temperature and humidity in the laboratory.

The requirements of constant temperature and humidity laboratory construction are mainly manifested in the above aspects. There are many requirements for the construction of constant temperature and humidity laboratories, so in the project preparation stage, it is necessary to contact a special laboratory project company in advance to ensure the quality. Ensure quantity on time. Complete the construction task