Clean room ceiling for supplying air

Abstract

The application provides a supply air ceiling for a class-I clean operating room, comprising a shell (21) and a high-efficiency filter (22), wherein the shell (21) is arranged on a suspended ceiling panel (31) of the operating room, and the high-efficiency filter (22) is arranged in the shell (21); the high-efficiency filter (22) comprises a middle low-resistance area (221) and two high-resistance areas (222) on the two sides, and the low-resistance area (221) corresponds to a surgical table (11) in the operating room in space. The device has good energy-saving effect, and can avoid the formation of air stagnation area, and is favorable for improving the air quality inside the operating room.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical buildings, more particularly to a grade I clean operating room air supply ceiling. BACKGROUND

[0002] The grade I (hundred-level) clean operating room in the clean operating department of a hospital has a high clean level requirement for the indoor environment air, and according to relevant specifications, a high-efficiency air supply ceiling 10 with an area of not less than 2.6x2.4m needs to be arranged at the middle position of the operating room ceiling (see the attached Figure 1 ), and the high-efficiency air supply ceiling is internally provided with a high-efficiency filter; in addition, a flow uniformizing film is arranged at the bottom of the high-efficiency air supply ceiling, and the flow uniformizing film is flush with the ceiling of the operating room. The air conditioning air supply system passes through the air supply pipeline to the high-efficiency air supply ceiling, is filtered by the high-efficiency filter in the high-efficiency air supply ceiling, and is then sent into the operating room, and then returns to the air conditioning unit through the return air inlets on both sides of the operating table 11 and the return air pipeline, and finally is sent into the clean operating room after being pressurized and heat and humidity treated by the fan in the air conditioning unit, so as to circulate.

[0003] Since the conventional grade I clean operating room air supply ceiling has a fixed size (2.6x2.4m) and the specifications have relevant requirements for the air supply face velocity of the operating area (the specification requires that the air velocity in the operating table area should be not less than 0.25m / s, and due to the certain distance between the operating table and the air supply ceiling, the air velocity out of the high-efficiency air supply ceiling should be not less than 0.38m / s according to the engineering experience), the air supply volume of the grade I clean operating room is large. The electric load, cold and heat load, and humidification load of the air conditioning system are in a proportional relationship with the air supply volume, so that the comprehensive energy consumption of the grade I clean operating room is very high, which is much higher than that of other low-level operating rooms. Secondly, the conventional air supply ceiling internally uses one or more filters with the same resistance, and the air velocity out of the air supply ceiling is uniform, and there is no obvious airflow partition between the operating area and the surrounding area, and the operating area is easily disturbed by the airflow in the surrounding area. Thirdly, due to the unique airflow organization mode of the clean operating room, i.e. the air is supplied from the top and the air is returned from the lower part on both sides of the operating table, an air stagnation area is easily formed in the upper part of the surrounding area of the operating room, especially near the four walls, and the air in this area is easily contaminated due to the lack of disturbance, thereby affecting the cleanliness of the operating area.

[0004] Therefore, new technology and equipment are needed to at least partially solve the above-mentioned problems in the prior art. SUMMARY

[0005] In recent years, the construction engineering of hospitals and other buildings in China has developed rapidly, the number of class I clean operating rooms is increasing, and the demand of personnel and technology for indoor environment is increasing. Due to the particularity of class I clean operating room, both the cleanliness and the air supply speed of the operating area need to be ensured, the size of the air supply surface is fixed and concentrated in a certain area, the circulating air supply volume is large, the indoor load is small, the air supply temperature difference is small, and the special process requirement of air cooling and heating makes the operating room need to supply cold and heat at the same time and the cold and heat offset is serious, the energy consumption is always high, which is the highest in the hospital, far higher than other low-level operating rooms and other areas. Therefore, it is particularly important to reduce the comprehensive energy consumption of class I clean operating room. In recent years, with the development of technology, there are various energy-saving treatment measures, among which reducing the circulating air supply volume is the most direct and effective energy-saving technical means. However, blindly reducing the circulating air supply volume will reduce the air supply surface speed, which will lead to that the cleanliness of the operating area cannot meet the requirements. In addition, since the surrounding area of the operating room is mainly medical staff and medical equipment, there is no surgical incision, and it is not necessary to meet the cleanliness requirement of the operating area, the surrounding area of the operating room air supply ceiling and the operating area are treated separately, and different air supply speeds and air volumes are adopted, which can also meet the cleanliness requirement and save energy.

[0006] Therefore, according to an aspect of the present application, a class I clean operating room air supply ceiling is provided, comprising: a shell (21) and a high efficiency filter (22), wherein the shell (21) is arranged on the ceiling panel (31) of the operating room, and the high efficiency filter (22) is arranged in the shell (21); the high efficiency filter (22) comprises a middle low resistance area (221) and two side high resistance areas (222), and the low resistance area (221) corresponds to the operating table (11) in the operating room in space.

[0007] According to the embodiment of the present application, wherein the initial resistance of the low resistance area (221) is maintained at 100-150 Pa, and the initial resistance of the high resistance area (222) is maintained at 200-250 Pa.

[0008] According to the embodiment of the present application, wherein the class I clean operating room air supply ceiling further comprises a flow uniformization film (23) arranged on the lower end surface of the shell (21).

[0009] According to the embodiment of the present application, wherein the class I clean operating room air supply ceiling further comprises a sealed partition plate (24) arranged between the high resistance area (222) and the low resistance area (221), and the sealed partition plate (24) extends to the flow uniformization film (23).

[0010] According to the embodiment of the present application, wherein the lower part of the shell (21) protrudes from the plane where the ceiling panel (31) is located, and the air supply hole plate (25) is arranged on the side surface of the protruding part.

[0011] According to an embodiment of the present application, the high-efficiency filter of the low-resistance zone (221) is made of a polytetrafluoroethylene material, and the high-efficiency filter of the high-resistance zone (222) is made of a glass fiber material.

[0012] According to an embodiment of the present application, the low-resistance zone (221) has a size of 2600x1200mm, and the high-resistance zone (222) has a size of 2600x600mm.

[0013] According to an embodiment of the present application, the lower end surface of the high-efficiency filter (22) is flush with the plane on which the ceiling panel (31) is located.

[0014] The present application adopts a new type of grade I clean operating room supply air ceiling. By adjusting the internal filter partition setting of the supply air ceiling, adjusting the internal structure of the ceiling and the positional relationship with the operating room ceiling panel, using the different air speeds of the operating area and the surrounding area, the obvious airflow partition is divided, so that the internal airflow of the operating area is not disturbed by the surrounding area. Under the premise of ensuring the air supply speed of the operating area, the cleanliness of the operating area and the surrounding area meets the requirements, the air supply speed of the corresponding supply air ceiling of the surrounding area is reduced, thereby reducing the air supply amount of the system and reducing the energy consumption. Secondly, the special orifice plate is arranged on the side of the position of the protruding ceiling panel at the lower part of the supply air ceiling, which forms disturbance to the air stagnation area at the upper part of the operating room, and improves the air quality inside the operating room. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the supply and return air section of a conventional operating room including a grade I clean operating room supply air ceiling of the prior art;

[0016] Figure 2 is a schematic diagram of the structure of a grade I clean operating room supply air ceiling according to an embodiment of the present application;

[0017] Figure 3 is a schematic diagram of the plane of an operating room including a grade I clean operating room supply air ceiling according to an embodiment of the present application; and

[0018] Figure 4 is a schematic diagram of the supply and return air section of an operating room including a grade I clean operating room supply air ceiling according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0020] Figure 2The structure of the air supply ceiling for a class I clean operating room according to the embodiment of the present application is shown in the figure. As shown in the figure, the air supply ceiling (20) of the embodiment can include a shell (21), a high efficiency filter (22), a flow uniformizing film (23), a sealed partition plate (24), and an air supply hole plate (25). The shell (21) is arranged on the ceiling plate (31) of the operating room, and ports for connecting air supply pipes are arranged at both ends. The high efficiency filter (22) is arranged inside the shell (21). The flow uniformizing film (23) is arranged on the lower end surface of the shell (21) to make the air flow uniform. The sealed partition plate (24) is arranged between the high resistance area (222) and the low resistance area (221). The air supply hole plate (25) is arranged on the side surface of the protruding part of the shell (21) protruding from the ceiling plate (31).

[0021] Further referring to Figure 3 and Figure 4 , the embodiment of the present application divides the conventional class I clean operating room air supply ceiling into three areas. Under the premise of meeting the total size requirement of the specification, for example, 2.6x2.4m, the internal area corresponds to the air supply ceiling of the operating area, and the size can be 2600x1200mm. The two side areas correspond to the air supply ceiling of the peripheral area, and the sizes can be 2600x600mm respectively. The operating area mainly protects the surgical incision of the patient on the operating table (11) from being contaminated, and the peripheral area mainly protects the cleanliness of the medical staff and medical equipment.

[0022] The shell (21) of the class I clean operating room air supply ceiling (20) of the embodiment of the present application can be made of stainless steel material, and the size can be 2600x2400x500mm. A 2600x1200mm low-resistance non-partition high efficiency filter (for example, PTFE polytetrafluoroethylene material) is arranged at the lower part as the low resistance area (221). Two 2600x600mm high resistance non-partition high efficiency filters (for example, glass fiber material) are arranged at both sides as the high resistance area (222). The thickness of the high efficiency filters can be 90mm. The initial resistance of the low resistance high efficiency filter of the present application is maintained at 100-150Pa, and the initial resistance of the high resistance high efficiency filter is maintained at 200-250Pa. According to the principle that the air flow through the filter is inversely proportional to the resistance, the smaller the resistance of the filter, the greater the air flow, and the greater the air supply surface wind speed. The air supply flow speed of the operating area of the present application is higher than that of the peripheral area, forming a natural air flow partition, avoiding the influence of the contaminants in the peripheral area on the operating area, and details are shown in the attached Figure 4

[0023] According to the embodiment of the present application, a stainless steel sealed partition plate (24) is arranged at the corresponding air supply surface at the boundary position between the high resistance area and the low resistance area to stabilize the air supply surface wind speed of each area and not interfere with each other. As shown in the figure, the sealed partition plate (24) can extend along the vertical direction to the flow uniformizing film (23).

[0024] As shown in the figure, the ceiling of the first class clean operating room of the embodiment of the present application protrudes from the plane where the ceiling panel (31) is located, for example, the protruding height can be 50 mm; and the stainless steel air supply hole plate (25) is arranged on the four sides of the protruding part to realize local side air supply. The density and size of the side stainless steel hole plate of the embodiment can be adjusted according to the area of the operating room, the distance between the air supply ceiling edge and the side wall of the operating room. When the area of the operating room is large or the distance between the air supply ceiling edge and the side wall of the operating room is far, the hole density and size of the hole plate are increased, and then the side air supply amount is appropriately increased. When the area of the operating room is small or the distance between the air supply ceiling edge and the side wall of the operating room is close, it is contrary.

[0025] The present application disturbs the air stagnation area of the operating part by the way of side hole plate air supply, optimizes the air flow organization of the peripheral area of the operating room, and improves the overall air quality of the operating room without increasing the air supply amount, as shown in the figure. Figure 4

[0026] The present application does not add other automatic control equipment for adjusting the air speed, and only changes the air supply surface air speed by changing the material and resistance of the filter. The system is simple to set and has high reliability. The embodiment of the present application solves the problems of large circulating air supply amount, high energy consumption and no energy saving of the traditional air supply ceiling, and also solves the problem of air stagnation area in the traditional operating room. Therefore, the comprehensive energy consumption of the operating room is reduced and the air quality of the operating room is improved.

[0027] The present application will be further described in combination with specific embodiments.

[0028] Two first class clean operating rooms of a hospital, wherein the first one is installed with a traditional air supply ceiling, the size of which is 2600x2400x500 mm (lengthxwidthxheight), and one piece of glass fiber high-resistance non-baffle high-efficiency filter is built-in, the size of which is 2600x2400x90 mm; the initial resistance is about 200-250 Pa.

[0029] The second one is reformed and installed with the air supply ceiling of the present application, the size of which is 2600x2400x500 mm (lengthxwidthxheight), and one piece of polytetrafluoroethylene low-resistance non-baffle high-efficiency filter is built-in, the size of which is 2600x1200x90 mm; the initial resistance is about 100-150 Pa; two pieces of glass fiber high-resistance non-baffle high-efficiency filter are arranged on the two sides, the sizes of which are 2600x600x90 mm respectively; the initial resistance is about 200-250 Pa, in addition, the lower end of the air supply ceiling protrudes from the ceiling panel (31) by about 50 mm.

[0030] It is measured that the initial resistance of the high-efficiency filter of the traditional air supply ceiling is about 200-250 Pa, the air supply surface air speed is maintained at 0.38 m / s, and the circulating air supply amount is about 2.6x2.4x0.38x3600=8536 m​3 / h.

[0031] The initial resistance of the low-resistance high-efficiency filter is maintained at 100-150 Pa, the air supply surface wind speed is maintained at 0.38 m / s, and the air volume is 4268 m 3 / h. The initial resistance of the high-resistance high-efficiency filter is maintained at 200-250 Pa, the air supply surface wind speed is maintained at 0.29 m / s, and the air volume is 3257 m 3 / h. The total circulating air supply volume is about 7525 m 3 / h.

[0032] The electricity load, cold and heat load, and humidification load of the class I clean operating room are in a proportional relationship with the air supply volume of the operating room. From the difference in the air volume (8536-7523=1003 m 3 / h), it is calculated that the comprehensive energy consumption of the air conditioning system of the class I clean operating room is reduced by about 11.8%.

[0033] In addition, by using the CFD numerical simulation method, the indoor air distribution of two class I clean operating rooms under the normal use state of the air supply ceiling is simulated, and the results show that the first traditional operating room has an air stagnation zone in the upper space close to the wall on both sides, and the second modified operating room eliminates the above-mentioned air stagnation zone.

[0034] The above only describes the preferred embodiments of the patent, and it should be noted that for ordinary skilled persons in the art, several improvements can be made without departing from the patent, and these improvements should also be considered as the protection scope of the patent.

Claims

1. A supply ceiling (20) for a class I clean operating room, comprising a housing (21) and a high efficiency filter (22), wherein The shell (21) is arranged on the ceiling plate (31) of the operating room, and the high-efficiency filter (22) is arranged in the shell (21); the high-efficiency filter (22) comprises a middle low-resistance area (221) and two high-resistance areas (222) on the two sides, wherein the low-resistance area (221) corresponds to the operating table (11) in the operating room in space. The lower part of the shell (21) protrudes from the plane where the ceiling plate (31) is located, and the air supply hole plate (25) is arranged on the side of the protruding part.

2. The clean room ceiling of claim 1, wherein, The initial resistance of the low-resistance area (221) is maintained at 100-150 Pa, and the initial resistance of the high-resistance area (222) is maintained at 200-250 Pa.

3. The supply ceiling for a class-I clean operating room according to claim 1, characterized in that, The uniform flow film (23) arranged on the lower end surface of the shell (21) is further included.

4. The supply ceiling for a class-I clean operating room according to claim 3, characterized in that The airtight partition plate (24) arranged between the high-resistance area (222) and the low-resistance area (221) is further included, and the airtight partition plate (24) extends to the uniform flow film (23).

5. The supply ceiling for a class-I clean operating room according to claim 1, characterized in that, The high-efficiency filter of the low-resistance area (221) is made of polytetrafluoroethylene material, and the high-efficiency filter of the high-resistance area (222) is made of glass fiber material.

6. The supply ceiling for a class-I clean operating room according to claim 1, characterized in that, The size of the low-resistance area (221) is 2600x1200 mm, and the size of the high-resistance area (222) is 2600x600 mm.

7. The supply ceiling for a class 100 clean room according to claim 1, wherein The lower end surface of the high-efficiency filter (22) is flush with the plane where the ceiling plate (31) is located.

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