Fire-fighting air supplement device for clean room

Abstract

The utility model provides a fire-fighting air supplement device for a clean room, which belongs to the technical field of fire fighting and comprises an air conditioning unit, an air supply system, an air return system and an air supplement regulation and control system. The air-conditioning unit comprises an air-conditioning box and a fresh air pipe arranged at an air inlet of the air-conditioning box; the air supply system comprises an air supply diffuser arranged in the clean room and an air supply pipe connected between the air supply diffuser and the air conditioning box fan section; the air return system comprises an air return opening formed in the clean room and an air return pipe connected between the air return opening and the air return section of the air conditioner box. The air supplement regulation and control system comprises a by-pass pipe arranged between the air supply pipe and the air return pipe, a first regulating valve arranged on the air supply pipe and located on the side, close to the air supply diffuser, of the by-pass pipe, and a switching valve arranged on the by-pass pipe. By means of the clean room air supplement system, the problems that in the prior art, according to a clean room air supplement system, outdoor air affects the cleanliness of a clean room in normal use through an independent air supplement channel, and the cost is high when the air supplement system is independently arranged can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fire fighting, more specifically, relates to a clean room fire fighting air supplementing device. BACKGROUND

[0002] Many precision instruments, electronic equipment and the like all need to be produced in clean workshops, and due to the particularity of their production processes, fire fighting design not only requires high efficiency, but also needs to minimize the impact of the fire fighting system itself on the clean area.

[0003] At present, the clean room air supplementing system is generally designed according to the conventional method, that is, a dedicated air supplementing fan system is used, the air volume is set to be not less than 50% of the smoke exhaust volume, and the air supplementing port is arranged at a low position. When this design method is applied to a clean room, the following problems may occur: 1) the air supplementing system connects the outdoor air with the clean room through a pipeline (although airtight valves can be arranged at the inlet of the air supplementing system, they cannot achieve absolute airtightness), which has an impact on the cleanliness of the clean room; 2) the clean room process pipeline itself is complex, and the separate arrangement of the air supplementing system results in too many pipelines, which is not conducive to the comprehensive arrangement of the clean room pipeline.

[0004] After searching the patent database for fire fighting air supplementing, an existing patent (application number CN201921273865.X) discloses a smoke exhaust air supplementing system. The patent is provided with a return air duct between a clean air conditioning unit and a clean room, and an air supplementing fan is connected to the return air duct. When there is no fire fighting accident, the return air duct airtight valve is opened, the air supplementing duct airtight valve is closed, and the air conditioning return air in the clean room is returned to the clean air conditioning unit through the return air duct. When a fire fighting accident occurs in the clean room, the return air duct airtight valve is closed, the air supplementing duct airtight valve and the air supplementing fan are opened, and the air supplementing fan takes outdoor fresh air to send it into the clean room through the return air duct. The air supplementing system connects the outdoor air with the clean room through a pipeline, and although airtight valves can be arranged at the inlet of the air supplementing system, they cannot achieve absolute airtightness. Therefore, the system still has an impact on the cleanliness of the clean room during normal use, and the independent fire fighting air supplementing fan also increases the cost.

[0005] Another patent (application number CN202022887755.1) discloses a fire fighting and air conditioning combined air supplementing system and an air supplementing control system. The patent is a fire fighting and air conditioning combined air supplementing system, that is, one air supplementing system is used for fire fighting and air conditioning, and then when a fire occurs, the air volume of the air conditioning can be used as the air supplementing volume by using a combined fresh air unit. The scheme provided by the patent can only be used when the air conditioning unit is a direct flow fresh air unit system, but for most clean rooms, the air conditioning system is a primary return air system, and obviously this air supplementing system cannot be used.

[0006] In summary, the current clean room air supplement system has the problems of affecting the cleanliness of the clean room under normal use by outdoor air through an independent air supplement channel and high cost of separately setting up the air supplement system. Utility model content

[0007] In view of the above problems, the utility model aims at providing a clean room fire-fighting air supplement device to solve the problems of affecting the cleanliness of the clean room under normal use by outdoor air through an independent air supplement channel and high cost of separately setting up the air supplement system in the prior art.

[0008] The clean room fire-fighting air supplement device provided by the utility model comprises an air conditioning unit, an air supply system, an air return system and an air supplement control system, wherein,

[0009] The air conditioning unit comprises an air conditioner box and a fresh air pipe arranged at an air inlet of the air conditioner box.

[0010] The air supply system comprises an air supply diffuser arranged in the clean room and an air supply pipe connected between the air supply diffuser and a fan section of the air conditioner box.

[0011] The air return system comprises an air return air inlet arranged in the clean room and an air return pipe connected between the air return air inlet and an air return section of the air conditioner box.

[0012] The air supplement control system comprises a bypass pipe arranged between the air supply pipe and the air return pipe, a first regulating valve arranged on the air supply pipe at a side of the bypass pipe close to the air supply diffuser and a switching valve arranged on the bypass pipe.

[0013] In addition, preferably, an air conditioning machine room is arranged at one side of the clean room; the air conditioning unit and the air supplement control system are arranged in the air conditioning machine room.

[0014] In addition, preferably, a second regulating valve is arranged on the air return pipe at a side of the bypass pipe close to the air conditioner box.

[0015] In addition, preferably, the first regulating valve and the second regulating valve are electric regulating valves; and / or the switching valve is an electric switching valve.

[0016] In addition, preferably, the utility model further comprises an automatic control system; wherein the automatic control system comprises a parameter detection member arranged in the clean room and a main control mechanism connected with the parameter detection member; the first regulating valve, the second regulating valve, the switching valve and a control system of the air conditioning unit are connected with the main control mechanism.

[0017] Further, preferably, a first fireproof valve is arranged on the air supply pipe; the first fireproof valve is arranged between the first regulating valve and the air supply diffuser; and the first fireproof valve is connected to the main control mechanism.

[0018] Further, preferably, a second fireproof valve is arranged on the air return pipe; the second fireproof valve is arranged on the bypass pipe close to the air return outlet; and the second fireproof valve is connected to the main control mechanism.

[0019] Further, preferably, an air return cavity is arranged in the clean room; and the air return pipe is arranged in the air return cavity.

[0020] Further, preferably, the fresh air pipe is a fresh air pipe with a heat-insulating and airtight valve.

[0021] Further, preferably, the air return outlet is an air return louvered outlet.

[0022] From the above technical solution, the clean room fire-fighting air supplement device provided by the utility model can form a communication fire-fighting air supplement channel by connecting the fresh air pipe, the air conditioner box and the bypass pipe to the air return pipe of the clean room through the first regulating valve and the switching valve of the bypass pipe when a fire occurs in the clean room, so that fresh air from outside can enter the clean room through the low-positioned air return outlet of the air return pipe, thereby providing air supplement for fire extinguishing, personnel evacuation and the like in the clean room. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other purposes and results of the utility model will be more apparent and easy to understand by referring to the following description in combination with the accompanying drawings and with a more comprehensive understanding of the utility model.

[0024] Fig. 1 FIG. 1 is a planar structural schematic diagram of a clean room fire-fighting air supplement device according to an embodiment of the utility model;

[0025] Fig. 2 FIG. 1 is a structural schematic diagram of a clean room fire-fighting air supplementing device according to an embodiment of the present application;

[0026] Fig. 3 FIG. 1 is a structural schematic diagram of a clean room fire-fighting air supplementing device according to an embodiment of the present application;

[0027] In the drawings, 11 - air conditioning box, 12 - fresh air pipe, 21 - air supply diffuser, 22 - air supply pipe, 31 - return air inlet, 32 - return air pipe, 33 - second regulating valve, 41 - bypass pipe, 42 - first regulating valve, 43 - switching valve, 5 - clean room, 51 - return air cavity, 6 - air conditioning machine room, 71 - first fireproof valve, 72 - second fireproof valve.

[0028] The same reference numbers in all the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0029] In view of the foregoing, in the prior art, the clean room air supplementing system has the problems of affecting the cleanliness of the clean room under normal use by outdoor air through an independent air supplementing channel and high cost of separately setting the air supplementing system, and the present application provides a clean room fire-fighting air supplementing device.

[0030] The specific embodiments of the present application will be described in detail below with reference to the drawings.

[0031] In order to illustrate the clean room fire-fighting air supplementing device provided by the present application, Fig. 1 FIG. 1 is a structural schematic diagram of a clean room fire-fighting air supplementing device according to an embodiment of the present application; Fig. 2 FIG. 1 is a structural schematic diagram of a clean room fire-fighting air supplementing device according to an embodiment of the present application; Fig. 3 FIG. 1 is a structural schematic diagram of a clean room fire-fighting air supplementing device according to an embodiment of the present application.

[0032] As shown in Figs. 1 to 3 The clean room fire-fighting air supplementing device provided by the present application includes an air conditioning unit, an air supply system, a return air system and an air supplementing control system, wherein,

[0033] The air conditioning unit includes an air conditioning box 11 and a fresh air pipe 12 arranged at an air inlet of the air conditioning box 11;

[0034] The air supply system includes an air supply diffuser 21 arranged in the clean room 5 and an air supply pipe 22 connected between the air supply diffuser 21 and a fan section of the air conditioning box 11;

[0035] The return air system includes a return air inlet 31 arranged in the clean room 5 and a return air pipe 32 connected between the return air inlet 31 and a return air section of the air conditioning box 11;

[0036] The make-up air control system includes a bypass pipe 41 located between the supply air pipe 22 and the return air pipe 32, a first regulating valve 42 located on the side of the bypass pipe 41 near the supply air diffuser 21 on the supply air pipe 22, and a switching valve 43 located on the bypass pipe 41.

[0037] Specifically, the air conditioning unit 11 generally includes a mixing section, a medium-efficiency filter section, a coil section and a fan section from the air inlet to the air outlet. The end of the fan section is the air outlet of the air conditioning unit 11. The mixing section is provided with an air inlet for fresh air and a return air inlet. The part of the return air inlet away from the mixing section is the return air section. The return air duct 32 is connected to the return air section.

[0038] Through the structural design of the air conditioning unit, air supply system, return air system, and make-up air control system, when a fire occurs in cleanroom 5, the first regulating valve 42 on the bypass pipe 41 is closed and the switching valve 43 on the bypass pipe 41 is quickly opened, so that the fresh air duct 12, air conditioning unit 11, and bypass pipe 41 are connected to the return air duct 32 of cleanroom 5, forming a connected fire-fighting make-up air channel. This ensures that fresh air from outside can continuously enter cleanroom 5 through the low-level return air inlet 31 on the return air duct 32, providing air replenishment for fire fighting and personnel evacuation. This utility model cleverly utilizes the existing air conditioning unit 11 and air supply and return ducts of cleanroom 5, and adds a bypass pipe 41. The corresponding control components enable fire-fighting air supply, avoiding the need for a separate fire-fighting air supply duct system, reducing the building space occupied, and saving significant costs for pipe materials, installation, and subsequent maintenance. Under normal conditions, the bypass pipe 41 is adjusted to a closed state via the switching valve 43, ensuring that the original airflow organization, pressure balance, and air cleanliness parameters of the cleanroom 5 are not disrupted, thus guaranteeing that production, experiments, and other activities within the cleanroom 5 can proceed normally without disruption. By integrating the functions of the two originally independent systems (air conditioning system and fire protection system), the ventilation system and fire-fighting air supply system of the cleanroom 5 are organically combined, improving the overall utilization rate of equipment and ductwork resources.

[0039] As a preferred embodiment of this utility model, an air conditioning room 6 is provided on one side of the clean room 5; the air conditioning unit and the make-up air control system are both located in the air conditioning room 6.

[0040] Specifically, to facilitate the installation of air conditioning units, an air conditioning room 6 is generally set up on one side of the clean room 5. The air conditioning units and the make-up air control system are located in the air conditioning room 6, which avoids occupying the internal space of the clean room 5 and makes the structural layout more rational.

[0041] As a preferred embodiment of this utility model, a second regulating valve 33 is provided on the side of the return air duct 32 near the air conditioning unit 11 on the bypass pipe 41.

[0042] Specifically, by setting a second regulating valve 33, the return air volume of the return air system is controlled when the air conditioning unit is working normally.

[0043] As a preferred embodiment of this utility model, both the first regulating valve 42 and the second regulating valve 33 are electrically regulated valves; and / or, the switching valve 43 is an electrically regulated switching valve.

[0044] It should be noted that the first regulating valve 42 and the second regulating valve 33 are preferably, but not limited to, electric regulating valves, and the switching valve 43 is preferably, but not limited to, an electric switching valve. It can also be other types of valves, such as electromagnetic valves. This utility model does not make any special limitation in this regard.

[0045] As a preferred embodiment of this utility model, it also includes an automatic control system; wherein, the automatic control system includes a parameter detection device installed in the clean room 5 and a main control mechanism connected to the parameter detection device; the first regulating valve 42, the second regulating valve 33, the switching valve 43 and the control system of the air conditioning unit are all connected to the main control mechanism.

[0046] Specifically, the parameter detection devices include, but are not limited to, temperature detection devices (such as thermometers), humidity detection devices (such as hygrometers), and cleanliness detection devices (cleanliness detectors). The main control mechanism is a chip or central processing unit, used to control the air conditioning unit and the make-up air device based on the detected parameters. The parameter detection devices monitor the cleanroom 5, and adjust the fan speed, cooling / heating modules, humidification / dehumidification modules, and other components within the air conditioning unit 11 according to the temperature, humidity, and cleanliness parameters of the cleanroom 5. Simultaneously, the opening of the airflow regulating valves on the supply air duct 22 and return air duct 32 is adjusted, ensuring that the air in the cleanroom follows a normal circulation path: it is supplied to the cleanroom 5 through the supply air duct 22, circulates within the room, and is then returned to the air conditioning unit through the return air duct 32 to be mixed with the fresh air entering from the fresh air duct 11, ensuring that the cleanroom environment always meets the requirements. At this time, the switching valve 43 on the bypass pipe 41 is closed, the fire-fighting make-up air channel is not activated, and all fire dampers remain open to ensure normal air circulation.

[0047] As a preferred embodiment of this utility model, a first fire damper 71 is provided on the air supply duct 22; the first fire damper 71 is located between the first regulating valve 42 and the air supply diffuser 21; the first fire damper 71 is connected to the main control mechanism.

[0048] As a preferred embodiment of this utility model, a second fire damper 72 is provided on the return air duct 32; the second fire damper 72 is located on the side of the bypass pipe 41 near the return air outlet 31; the second fire damper 72 is connected to the main control mechanism.

[0049] Specifically, by setting up a first fire damper 71 and a second fire damper 72, they can block fires in the event of a fire.

[0050] As a preferred embodiment of this utility model, a return air cavity 51 is provided in the clean room 5; the return air duct 32 is provided in the return air cavity 51.

[0051] Specifically, by setting up a return air cavity 51, the layout of the return air ducts 32 in the clean room 5 is made more orderly.

[0052] As a preferred embodiment of this utility model, the fresh air duct 12 is a fresh air duct with a heat-insulating and airtight valve.

[0053] It should be noted that: Fresh air duct 12 is preferably, but not limited to, a fresh air duct with an insulated and airtight valve.

[0054] As a preferred embodiment of this utility model, the return air vent 31 is a return air louver vent.

[0055] It should be noted that: the return air vent 31 is preferably, but not limited to, a return air louver vent.

[0056] The installation steps of the cleanroom fire-fighting air supply device provided by this utility model are as follows:

[0057] According to the design layout of cleanroom 5, the air conditioning unit 11 is installed in a suitable location in the air conditioning room 6, ensuring its stability and ease of connection with the fresh air duct 12, supply air duct 22, and return air duct 32. Then, the fresh air duct 12, supply air duct 22, and return air duct 32 are laid, accurately connecting to the supply and return air outlets of the air conditioning unit 11, and extending to the corresponding supply and return air areas within cleanroom 5. Simultaneously, regulating valves for airflow adjustment are installed at appropriate locations on the pipe walls of the supply air duct 22 and return air duct 32. Sealing of the pipe connections is performed using sealant or similar materials to prevent air leakage from affecting air conditioning performance. Next, a bypass pipe 41 is installed, connecting its two ends to the main pipes of the supply air duct 22 and return air duct 32, respectively. An electric switching valve is installed on the bypass pipe 41, and the electric switching valve is electrically connected to the corresponding control port of the fire control system (automatic control system) via an electrical wire, ensuring normal communication and the ability to receive control commands. Finally, fire dampers are installed at key locations in the supply air duct 22 and return air duct 32. The fire dampers are also connected to the fire control system (automatic control system) so that they can respond to the instructions of the fire control system and fire signals.

[0058] As can be seen from the above specific embodiments, the cleanroom fire-fighting air supply device provided by this utility model, through the structural design of the air conditioning unit, air supply system, return air system, and air supply control system, ensures that when a fire occurs in the cleanroom, the first regulating valve on the bypass pipe is closed and the switching valve on the bypass pipe is quickly opened, so that the fresh air duct, air conditioning unit, and bypass pipe are connected to the cleanroom's return air duct, forming a connected fire-fighting air supply channel. This ensures that fresh external air can continuously enter the cleanroom through the low-level return air vents on the return air duct, providing air supply for fire fighting and personnel evacuation. This utility model cleverly utilizes the existing cleanroom air conditioning unit and air supply and return air ducts. Adding a bypass pipe and corresponding control components enables fire-fighting air supply, avoiding the need for a separate fire-fighting air supply duct system, reducing building space occupation, and saving significant costs for pipe materials, installation, and subsequent maintenance. Under normal conditions, the bypass pipe is adjusted to a closed state via a switching valve, ensuring that the original airflow organization, pressure balance, and air cleanliness parameters of the cleanroom are not disrupted, thus guaranteeing that production and experimental activities within the cleanroom can proceed normally without disruption. By integrating the functions of the two originally independent systems (air conditioning and fire protection systems), the cleanroom's ventilation and fire-fighting air supply systems are organically combined, improving the overall utilization rate of equipment and ductwork resources.

[0059] The cleanroom fire-fighting air supply device according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the cleanroom fire-fighting air supply device proposed above without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A cleanroom fire-fighting air supply device, characterized in that, This includes air conditioning units, supply air systems, return air systems, and make-up air control systems; among which, The air conditioning unit includes an air conditioning unit and a fresh air duct installed at the air inlet of the air conditioning unit; The air supply system includes an air supply diffuser installed in the clean room and an air supply duct connecting the air supply diffuser and the fan section of the air conditioning unit. The return air system includes a return air vent installed in the clean room and a return air duct connecting the return air vent and the return air section of the air conditioning unit. The make-up air control system includes a bypass pipe disposed between the supply air pipe and the return air pipe, a first regulating valve disposed on the supply air pipe on the side of the bypass pipe near the supply air diffuser, and a switching valve disposed on the bypass pipe.

2. The cleanroom fire-fighting air supply device according to claim 1, characterized in that, An air conditioning room is located on one side of the cleanroom; Both the air conditioning unit and the make-up air control system are located in the air conditioning room.

3. The cleanroom fire-fighting air supply device according to claim 1, characterized in that, A second regulating valve is provided on the side of the return air duct near the air conditioning unit, on the side of the bypass pipe.

4. The cleanroom fire-fighting air supply device according to claim 3, characterized in that, Both the first regulating valve and the second regulating valve are electrically operated regulating valves; and / or, The switching valve is an electrically operated switching valve.

5. The cleanroom fire-fighting air supply device according to claim 3, characterized in that, It also includes automatic control systems; among which, The automatic control system includes parameter detection devices installed in the clean room and a main control mechanism connected to the parameter detection devices; The first regulating valve, the second regulating valve, the switching valve, and the control system of the air conditioning unit are all connected to the main control mechanism.

6. The cleanroom fire-fighting air supply device according to claim 5, characterized in that, A first fire damper is installed on the air supply duct; The first fire damper is installed between the first regulating valve and the air diffuser; The first fire damper is connected to the main control mechanism.

7. The cleanroom fire-fighting air supply device according to claim 5, characterized in that, A second fire damper is installed on the return air duct; The second fire damper is located on the side of the bypass pipe near the return air vent; The second fire damper is connected to the main control mechanism.

8. The cleanroom fire-fighting air supply device according to claim 1, characterized in that, A return air cavity is provided in the clean room; The return air duct is installed inside the return air cavity.

9. The cleanroom fire-fighting air supply device according to claim 1, characterized in that, The fresh air duct is a fresh air duct with an insulated and airtight valve.

10. The cleanroom fire-fighting air supply device according to claim 1, characterized in that, The return air vent is a return air louver vent.

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