Low noise static pressure box structure of horizontal laminar flow clean bench
Patent Information
- Application Number
- CN202521985836.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-09-16
AI Technical Summary
[0003]上述常用静压箱结构，都需要使用风机来增压让空气经过高效过滤器，其中风机产生的气流风噪是主要噪音来源，过高的噪音影响可能导致实验室工作人员听觉系统损伤、注意力分散、身体亚健康、工作效率降低等，传统的无分腔设计静压箱结构无法有效隔离风机产生的气流风噪，噪音在静压箱中产生，并直接穿过高效过滤器或者是外壳到达洁净工作台的正面，给实验室工作人员带来不舒适的使用体验，为此，我们提出一种水平层流洁净工作台的低噪音静压箱结构
本实用新型通过静压箱外壳和第一隔音机构、第二隔音机构的设置，再在风道结构的配合下，使得静压箱整体内部呈竖向的8字型的设置，从而使得静压箱内部为分腔设置，使得风机吹向静压箱内部的气流通过第一隔音机构消除气流风噪的动能，通过第二隔音机构隔绝气流风噪向静压箱前部的传播，使得吹向洁净工作台的气流不含较大的噪声，保证了实验室工作人员具有舒适的使用体验。
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Figure CN224793543U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of static pressure chamber technology, and in particular to a low-noise static pressure chamber structure for a horizontal laminar flow clean bench. Background Technology
[0002] Horizontal laminar flow clean benches are air purification devices used to provide a localized Class 100 clean, dust-free, and sterile environment. They are widely used in fields such as biological laboratories, medical and health care, biopharmaceuticals, electronic circuits, and precision manufacturing. Their working principle involves drawing in air with a fan, pressurizing it in a static pressure chamber, filtering it through a high-efficiency filter, and finally delivering the filtered clean air in a horizontal airflow manner. This ensures that the operating area maintains a Class 100 cleanliness level under controlled clean airflow, creating a highly clean and sterile working environment. There are generally two types of static pressure boxes: one is a vertical I-shaped structure, with a double-inlet centrifugal fan and fan outlet at the top. The airflow is downward, and the front of the static pressure box is a high-efficiency filter. The airflow from the fan outlet is distributed and flows out through the high-efficiency filter. The wind noise also directly penetrates the high-efficiency filter and is transmitted. The other is an inverted L-shaped structure, with a centrifugal fan with or without a volute at the top. The airflow generated directly by the impeller is transferred from the upper static pressure box to the back static pressure box. The stronger wind noise propagates in the upper cavity, and the airflow shroud directly penetrates the upper outer shell and transmits strong noise. The noise at the lower static pressure box and high-efficiency filter is relatively small.
[0003] The commonly used plenum structures mentioned above all require the use of a fan to pressurize the air and force it through a high-efficiency filter. The airflow noise generated by the fan is the main source of noise. Excessive noise may cause damage to the hearing system, distraction, sub-health, and reduced work efficiency of laboratory staff. Traditional plenum structures without compartments cannot effectively isolate the airflow noise generated by the fan. The noise is generated in the plenum and passes directly through the high-efficiency filter or the outer shell to the front of the clean bench, causing an uncomfortable user experience for laboratory staff. Therefore, we propose a low-noise plenum structure for a horizontal laminar flow clean bench. Utility Model Content
[0004] The purpose of this invention is to provide a low-noise static pressure chamber structure for a horizontal laminar flow clean bench, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-noise static pressure chamber structure for a horizontal laminar flow clean bench, comprising: Static pressure chamber shell; The first sound insulation mechanism is disposed at the top of the static pressure box shell; The second sound insulation mechanism is disposed inside the first sound insulation mechanism; The air duct structure is disposed inside the static pressure box shell and the first sound insulation mechanism; A filtration mechanism is disposed on the front of the static pressure chamber shell; Maintenance mechanism, which is located on the back of the static pressure box shell.
[0006] Preferably, the first sound insulation mechanism includes a C-shaped sound insulation seat, which is fixedly connected to the top of the static pressure box shell, and the second sound insulation mechanism is disposed inside the C-shaped sound insulation seat.
[0007] Preferably, the second sound insulation mechanism includes an L-shaped sound insulation seat, which is fixedly connected to the top of the static pressure box shell and is located below the front of the C-shaped sound insulation seat.
[0008] Preferably, the air duct structure includes: The fan outlet is located on the front of the C-shaped soundproof base; A noise reduction cavity is disposed inside a C-shaped sound insulation base; The noise-reducing air outlet is located between the C-shaped sound insulation base and the L-shaped sound insulation base; The air outlet cavity is located inside the static pressure box shell.
[0009] Preferably, the filtration mechanism includes a filter, which is installed on the front of the static pressure box housing and disposed on the front of the air outlet cavity.
[0010] Preferably, the maintenance mechanism includes a rear maintenance plate, which is detachably installed on the back of the static pressure box housing and is located on the back of the filter.
[0011] The technical effects and advantages of this utility model are as follows: This invention, through the arrangement of a static pressure chamber shell and a first and second sound insulation mechanism, and in conjunction with the air duct structure, makes the overall interior of the static pressure chamber vertically arranged in a figure-eight shape. This results in a compartmentalized internal structure for the static pressure chamber. The airflow blown into the static pressure chamber by the fan is de-energized by the first sound insulation mechanism, and the second sound insulation mechanism prevents the airflow noise from propagating to the front of the static pressure chamber. This ensures that the airflow blowing towards the clean bench is not noisy, guaranteeing a comfortable user experience for laboratory staff. Attached Figure Description
[0012] Figure 1 This is a side sectional view of the present invention.
[0013] In the diagram: 101, static pressure box outer shell; 102, fan outlet; 103, C-type sound insulation seat; 104, L-type sound insulation seat; 105, noise reduction chamber; 106, noise reduction outlet; 107, air outlet chamber; 108, filter; 109, rear inspection panel. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] This utility model provides, for example Figure 1 The diagram illustrates a low-noise static pressure chamber structure for a horizontal laminar flow clean bench. It includes a static pressure chamber shell 101, a first sound insulation mechanism, a second sound insulation mechanism, an air duct structure, a filter mechanism, and a maintenance mechanism. The first sound insulation mechanism is located at the top of the static pressure chamber shell 101, the second sound insulation mechanism is located inside the first sound insulation mechanism, the air duct structure is located inside the static pressure chamber shell 101 and the first sound insulation mechanism, the filter mechanism is located on the front of the static pressure chamber shell 101, and the maintenance mechanism is located on the back of the static pressure chamber shell 101. Through the arrangement of the static pressure chamber shell 101, the first sound insulation mechanism, and the second sound insulation mechanism, along with the cooperation of the air duct structure, the overall interior of the static pressure chamber is arranged in a vertical figure-eight shape. This results in a compartmentalized internal structure, allowing the airflow blown into the static pressure chamber by the fan to eliminate the kinetic energy of airflow noise through the first sound insulation mechanism and to prevent the propagation of airflow noise to the front of the static pressure chamber through the second sound insulation mechanism. This ensures that the airflow blowing onto the clean bench is not excessively noisy, guaranteeing a comfortable user experience for laboratory personnel.
[0016] The first sound insulation mechanism includes a C-shaped sound insulation seat 103, which is fixedly connected to the top of the static pressure box shell 101. The second sound insulation mechanism is located inside the C-shaped sound insulation seat 103 and includes an L-shaped sound insulation seat 104, which is fixedly connected to the top of the static pressure box shell 101 and located below the front of the C-shaped sound insulation seat 103. The air duct structure includes a fan outlet 102, a noise reduction chamber 105, a noise reduction outlet 106, and an air outlet 107. The fan outlet 102 is located on the front of the C-shaped sound insulation seat 103, the noise reduction chamber 105 is located inside the C-shaped sound insulation seat 103, and the noise reduction outlet 106 is located between the C-shaped sound insulation seat 103 and the L-shaped sound insulation seat 107. Between the sound bases 104, the air outlet 107 is opened inside the static pressure chamber shell 101. The air blown out by the fan flows into the noise reduction chamber 105 through the fan outlet 102. The kinetic energy of the airflow noise in the noise reduction chamber 105 is absorbed and eliminated by the C-shaped sound insulation base 103 located at the rear of the noise reduction chamber 105. The propagation of the airflow noise towards the front of the static pressure chamber is isolated by the L-shaped sound insulation base 104 located at the front of the noise reduction chamber 105. At the same time, the noise reduction chamber 105 can absorb the internal airflow by swirling to eliminate airflow noise. Then the airflow flows smoothly into the air outlet 107 through the noise reduction outlet 106 at the bottom of the noise reduction chamber 105, and finally blows out through the filter mechanism, thus providing a more comfortable user experience for laboratory staff.
[0017] The filtration mechanism includes a filter 108, which is installed on the front of the static pressure chamber housing 101 and located on the front of the air outlet 107. After the airflow enters the air outlet 107 through the noise reduction air outlet 106, it can pass through the filter 108 and flow out of the static pressure chamber housing 101, thereby filtering the airflow blown out of the static pressure chamber housing 101 to prevent the blown air from containing dust, thus further improving the comfortable user experience for laboratory staff.
[0018] The maintenance mechanism includes a rear maintenance plate 109, which is detachably installed on the back of the static pressure box housing 101. The rear maintenance plate 109 is located on the back of the filter 108. After the filter 108 has been working for a certain period of time, the filter 108 inside the static pressure box housing 101 can be replaced by removing the rear maintenance plate 109, thereby improving the convenience of static pressure box operation.
[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A low-noise static pressure box structure for a horizontal laminar flow clean bench, characterized in that, include: Static pressure chamber outer shell (101); The first sound insulation mechanism is disposed at the top of the static pressure box shell (101); The second sound insulation mechanism is disposed inside the first sound insulation mechanism; The air duct structure is disposed inside the static pressure box shell (101) and the first sound insulation mechanism; A filtration mechanism is disposed on the front side of the static pressure chamber housing (101); Maintenance mechanism, which is located on the back of the static pressure box housing (101).
2. The low-noise static pressure box structure of a horizontal laminar flow clean bench according to claim 1, characterized in that, The first sound insulation mechanism includes a C-shaped sound insulation seat (103), which is fixedly connected to the top of the static pressure box shell (101), and the second sound insulation mechanism is disposed inside the C-shaped sound insulation seat (103).
3. The low-noise static pressure box structure of a horizontal laminar flow clean bench according to claim 2, characterized in that, The second sound insulation mechanism includes an L-shaped sound insulation seat (104), which is fixedly connected to the top of the static pressure box shell (101) and is located below the front of the C-shaped sound insulation seat (103).
4. The low-noise static pressure box structure of a horizontal laminar flow clean bench according to claim 3, characterized in that, The air duct structure includes: The fan outlet (102) is located on the front of the C-shaped soundproof seat (103); A noise reduction cavity (105) is disposed inside a C-shaped sound insulation base (103); Noise-reducing air outlet (106), wherein the noise-reducing air outlet (106) is located between the C-shaped sound insulation seat (103) and the L-shaped sound insulation seat (104); Air outlet cavity (107) is located inside the static pressure box shell (101).
5. The low-noise static pressure box structure of a horizontal laminar flow clean bench according to claim 4, characterized in that, The filtration mechanism includes a filter (108), which is installed on the front of the static pressure box housing (101) and disposed on the front of the air outlet cavity (107).
6. The low-noise static pressure box structure of a horizontal laminar flow clean bench according to claim 5, characterized in that, The maintenance mechanism includes a rear maintenance plate (109), which is detachably installed on the back of the static pressure box housing (101) and is located on the back of the filter (108).