Air filtering unit

Abstract

The utility model discloses an air filtering unit which comprises an air inlet system, an air return system and a dust-free room, the air inlet system and the air return system are arranged on the two sides of the dust-free chamber respectively, the air inlet system comprises an air inlet pressure cavity, an air inlet filtering element and a medium-efficiency filter, the air inlet pressure cavity is formed in the right side of the dust-free chamber and communicates with the dust-free chamber through the air inlet filtering element, and the medium-efficiency filter is arranged in the air inlet pressure cavity; the air return system comprises an air return pressure cavity and an air return filter element, and the air return pressure cavity is formed in the left side of the dust-free chamber and communicates with the dust-free chamber through the air return filter element; each of the air inlet filter element and the air return filter element comprises a plurality of microporous ceramic bodies which are horizontally arranged in parallel; the front end and the rear end of the medium efficiency filter are connected with the front end inner wall and the rear end inner wall of the air inlet pressure cavity respectively. According to the utility model, the traditional high-efficiency filter is replaced by the microporous ceramic body, so that the problem that the high-efficiency filter cannot be disassembled and cleaned is effectively solved, and the subsequent use and maintenance cost of the dust-free room is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to an air filtering unit. Background Art

[0002] Fan filter unit, the full name of which is FanFilterUnit, or FFU for short, is composed of a high-efficiency filter or an ultra-high-efficiency filter, a micro fan and a shell, and is the terminal equipment of a purification air-conditioning system. The working principle of the FFU unit is to use a micro fan to generate airflow, inhale air and filter it through a high-efficiency filter to remove particulate matter and microorganisms in the air, and then send the purified air back to the room. It is widely used in clean rooms and dust-free rooms to maintain the cleanliness of the environment.

[0003] The FFU units on the market have the following defects: 1) Traditional FFU units use a positive pressure method from top to bottom, which easily causes dust particles in the space to run around, resulting in poor air purification effect; 2) The high-efficiency filter in the FFU unit does not have the function of resisting high tide and high humidity; 3) The high-efficiency filter cannot be cleaned, and the cost of subsequent maintenance and replacement is high. Utility Model Content

[0004] In view of this, the purpose of the utility model is to overcome the problems existing in the prior art and provide an air filter unit, which has the advantages of high temperature resistance, high humidity and good air purification effect.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] An air filtration unit comprises an intake system, a return air system and a clean room; the intake system and the return air system are respectively arranged on both sides of the clean room, the intake system comprises an intake pressure chamber, an intake filter element and a medium efficiency filter, the intake pressure chamber is arranged on the right side of the clean room and is connected with the clean room through the intake filter element, and the medium efficiency filter is arranged in the intake pressure chamber; the return air system comprises a return air pressure chamber and a return air filter element, the return air pressure chamber is arranged on the left side of the clean room and is connected with the clean room through the return air filter element; the intake filter element and the return air filter element both comprise a plurality of microporous ceramic bodies arranged horizontally in parallel; the front end and the rear end of the medium efficiency filter are respectively connected to the front end inner wall and the rear end inner wall of the intake pressure chamber.

[0007] Furthermore, the surface of the microporous ceramic body is provided with a plurality of micrometer-sized pores, and an air circulation channel is formed in each microporous ceramic body.

[0008] Furthermore, the air intake system further comprises an air intake pipe, and the air intake pipe is arranged on a side of the air intake pressure chamber away from the clean room.

[0009] Further, the return air system further includes a return air duct, and the return air duct is arranged on the side of the return air pressure chamber away from the clean room.

[0010] Further, the air filtration unit further includes a pressure gauge, and the pressure gauge is arranged in the clean room.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The present utility model respectively arranges the air intake system and the return air system on the left and right sides of the clean room, and adopts the air purification circulation principle in the left and right directions, so as to solve the problems of uncertain dust particle directions and chaotic movement of dust particles caused by the positive pressure from top to bottom in the traditional fan filter unit, and improve the air purification and filtration effect;

[0013] 2. The present utility model adopts an air intake filtration element and a return air filtration element to replace the high-efficiency filter, so as to solve the problems that the high-efficiency filter cannot be disassembled and cleaned, and save the subsequent use and maintenance costs of the clean room. Description of the Drawings

[0014] Figure 1 is a plan view of the air filtration unit in the present utility model;

[0015] Figure 2 is a plan view of the combination of the clean room, the air intake filtration element and the return air filtration element in the present utility model.

[0016] The reference numerals are: 1 - air intake system, 11 - air intake pressure chamber, 12 - air intake filtration element, 13 - medium efficiency filter, 14 - air intake duct, 2 - return air system, 21 - return air pressure chamber, 22 - return air filtration element, 23 - return air duct, 3 - clean room, and 4 - pressure gauge. Detailed Embodiments

[0017] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the drawings. The content mentioned in the embodiments does not limit the present utility model.

[0018] Embodiment

[0019] In the description of the present embodiment, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "horizontal", "vertical" and the like appear in the description of the present embodiment, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] like Figure 1-2 As shown, this embodiment discloses an air filtration unit, including an intake system 1, a return air system 2 and a clean room 3; the intake system 1 and the return air system 2 are respectively arranged on both sides of the clean room 3, the intake system 1 includes an intake pressure chamber 11, an intake filter element 12 and a medium efficiency filter 13, the intake pressure chamber 11 is arranged on the right side of the clean room 3 and is connected with the clean room 3 through the intake filter element 12, and the medium efficiency filter 13 is arranged in the intake pressure chamber 11; the return air system 2 includes a return air pressure chamber 21 and a return air filter element 22, the return air pressure chamber 21 is arranged on the left side of the clean room 3 and is connected with the clean room 3 through the return air filter element 22; the intake filter element 12 and the return air filter element 22 both include a plurality of microporous ceramic bodies arranged horizontally in parallel; the front end and the rear end of the medium efficiency filter 13 are respectively connected to the front end inner wall and the rear end inner wall of the intake pressure chamber 11.

[0021] By arranging the air intake system 1 and the return air system 2 on both sides of the clean room 3 respectively and adopting the left-right circulating positive pressure airflow filtering method, the problem of dust particles floating and running around in the traditional fan filter unit due to the use of upper and lower positive pressure is solved, and the air filtration cleaning effect is improved; the air intake filter element 12 and the return air filter element 22 are used to filter the airflow, and the microporous ceramic body is used to replace the high-efficiency filter in the traditional fan filter unit, which is convenient for disassembly, assembly and cleaning of the air intake filter element 12 and the return air filter element 22, and the problem that the high-efficiency filter in the traditional fan filter unit cannot be cleaned and the subsequent maintenance and replacement cost is high is solved.

[0022] Further, a number of micron-sized pores are provided on the surface of the microporous ceramic body, and an air circulation channel is formed in each microporous ceramic body. The multiple microporous ceramic bodies of the intake air filter element 12 are all arranged at intervals and arranged in sequence from front to back; the multiple microporous ceramic bodies of the return air filter element 22 are all arranged at intervals and arranged in sequence from front to back. The air flow passes through the air circulation channel, and the microporous ceramic body intercepts dust, bacteria, etc. in the air flow and filters the air flow. It is sintered from ceramic powder. After sintering, micron-sized pores with irregular distribution are formed on the surface of the microporous ceramic body. The precise plane accuracy is ensured through the grinding process, and the pore size is of micron-level precision. The microporous ceramic body has the functions of moisture resistance, humidity resistance, and anti-static. Both the intake air filter element 12 and the return air filter element 22 are micron-level microporous ceramic bodies, replacing the traditional high-efficiency filter to solve the problems of moisture resistance, humidity resistance, and anti-static of the air filtration unit.

[0023] Further, the intake air system 1 further includes an intake air pipe 14, and the intake air pipe 14 is arranged on the side of the intake air pressure chamber 11 away from the dust-free chamber 3. The intake air pipe 14 is arranged horizontally, and the air flow enters the intake air system 1 in the horizontal direction. The air flow passes through the medium-efficiency filter 13 and the intake air filter element 12 in sequence for filtration and purification, and then enters the dust-free chamber 3 from the intake air system 1 in the horizontal direction.

[0024] Further, the return air system 2 further includes a return air pipe 23, and the return air pipe 23 is arranged on the side of the return air pressure chamber 21 away from the dust-free chamber 3. The return air pipe 23 is arranged horizontally, and the air flow enters the return air system 2 from the dust-free chamber 3 in the horizontal direction. The air flow passes through the return air filter element 22 for filtration to form an air flow cycle.

[0025] Further, the air filtration unit further includes a pressure gauge 4, and the pressure gauge 4 is arranged in the dust-free chamber 3. By setting the pressure gauge 4, it is used to monitor the air pressure value inside the dust-free chamber 3.

[0026] The working principle of the air filtration unit in the present utility model is as follows: The central air-conditioning air handling unit provides pressure to generate intake air flow; the intake air flow enters the intake air pressure chamber 11 through the intake air pipe 14, and the intake air flow is filtered through the medium-efficiency filter 13 in the intake air pressure chamber 11; after filtration, the intake air flow acts on the intake air filter element 12 for further filtration and purification to obtain purified air flow; the purified air flow is positively pressured on the dust-free chamber 3 after passing through the intake air filter element 12, taking away the dust particles in the dust-free chamber 3; the return air flow enters the return air pressure chamber 21 through the return air filter element 22 to form an air flow cycle.

[0027] The above has introduced in detail the technical solutions provided by the embodiments of the present utility model. Specific examples are used herein to elaborate on the principles and implementation manners of the embodiments of the present utility model. The description of the above embodiments is only applicable to helping understand the principles of the embodiments of the present utility model. At the same time, for those of ordinary skill in the art, according to the embodiments of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An air filter unit, characterized in that: It includes an air intake system, a return air system and a clean room; the air intake system and the return air system are respectively arranged on both sides of the clean room, the air intake system includes an air intake pressure chamber, an air intake filter element and a medium efficiency filter, the air intake pressure chamber is arranged on the right side of the clean room and is connected with the clean room through the air intake filter element, and the medium efficiency filter is arranged in the air intake pressure chamber; the return air system includes a return air pressure chamber and a return air filter element, the return air pressure chamber is arranged on the left side of the clean room and is connected with the clean room through the return air filter element; the air intake filter element and the return air filter element both include a plurality of microporous ceramic bodies arranged horizontally in parallel; the front end and the rear end of the medium efficiency filter are respectively connected to the front end inner wall and the rear end inner wall of the air intake pressure chamber.

2. An air filter unit according to claim 1, characterized in that: The surface of the microporous ceramic body is provided with a plurality of micrometer-sized pores, and an air circulation channel is formed in each microporous ceramic body.

3. An air filter unit according to claim 1, characterized in that: The air intake system further comprises an air intake pipe, and the air intake pipe is arranged on a side of the air intake pressure chamber away from the clean room.

4. An air filter unit according to claim 1, characterized in that: The return air system further comprises a return air duct, and the return air duct is arranged on a side of the return air pressure chamber away from the clean room.

5. An air filter unit according to claim 1, characterized in that: The air filter unit further comprises a pressure gauge, and the pressure gauge is arranged in the clean room.

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