Ultralow-temperature explosion-proof nitrogen compressor
By installing a soundproof mesh cover and an air inlet pipe on the outside of the nitrogen compressor, the noise pollution problem was solved, the equipment was cooled down, and dust pollution was avoided.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EUROSTAR POWER TECH (JIANGSU) CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
Existing nitrogen compressors generate high-intensity noise of up to 90-110 decibels during cooling due to mechanical vibration, airflow pulsation, and exhaust noise, resulting in serious noise pollution.
A soundproof mesh cover is installed on the outside of the nitrogen compressor, and air inlet slots are opened on its front and rear sides. An air inlet pipe is installed inside to guide the gas to the first-stage impeller, so as to achieve the effects of cooling and sound insulation.
It effectively reduces noise pollution, prevents dust from entering the equipment, and simultaneously achieves effective cooling of the equipment.
Smart Images

Figure CN224380231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nitrogen compressors, specifically an ultra-low temperature explosion-proof nitrogen compressor. Background Technology
[0002] A nitrogen compressor is a device specifically designed to compress nitrogen. Its core function is to increase the pressure of low-pressure nitrogen through mechanical work to meet the demand for high-pressure or high-density nitrogen in industrial, scientific research, or other applications. It mainly increases the pressure by mechanically reducing the gas volume and increasing the collision frequency between molecules.
[0003] Existing nitrogen compressors generate high temperatures during operation due to their dense internal components. To ensure continuous normal operation, they need to be cooled. Currently, the cooling method for nitrogen compressors is to expose the equipment to the outside and allow it to cool naturally. However, during operation, mechanical vibration, airflow pulsation, and exhaust noise generate high-intensity noise of up to 90-110 decibels, causing serious noise pollution when the equipment is operating outdoors. Utility Model Content
[0004] The technical problem to be solved by this utility model is: Currently, the cooling of nitrogen compressors is achieved by exposing the equipment to the outside and allowing it to cool down naturally. However, during operation, the equipment generates high-intensity noise of up to 90 to 110 decibels due to mechanical vibration, airflow pulsation and exhaust noise, which causes serious noise pollution when the equipment is working outdoors.
[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: it includes a base plate, a main motor fixedly installed on the top of the base plate, a gearbox fixedly installed on the top of the base plate, and a first-stage impeller located on the left side of the gearbox. A protective component is provided on the top of the base plate.
[0006] The protective component is specifically a soundproof mesh cover fixedly installed on the top of the base plate. The main motor, gearbox and first-stage impeller are all located inside the soundproof mesh cover. Air intake slots for air intake are opened on the right side of the front and rear ends of the soundproof mesh cover. Air intake grilles are provided at the air intake slots. An exhaust port is provided on the top left side of the soundproof mesh cover.
[0007] The beneficial effects of this utility model are as follows: by setting protective components on the outside of the equipment, the equipment can be soundproofed by the soundproof mesh cover, so that there will be no serious noise pollution during operation. The air intake slots on the front and back sides of the soundproof mesh cover will not cause the inside to be sealed, so that the equipment can achieve the cooling effect. At the same time, the soundproof mesh cover can also play a dustproof role, preventing dust from falling on the instrument.
[0008] Furthermore, an air inlet pipe is provided at the left end of the soundproof mesh cover. One end of the air inlet pipe is connected to the front side of the soundproof mesh cover, and the other end of the air inlet pipe is connected to the left side of the soundproof mesh cover. The other end of the air inlet pipe extends to the left side of the first-stage impeller.
[0009] The beneficial effects of this utility model are as follows: by setting up an air inlet pipe, the gas can be diverted to the left side of the first-stage impeller, thereby cooling the first-stage impeller and gearbox, and allowing the instruments inside the soundproof mesh cover to be cooled down.
[0010] Furthermore, an air intake mesh cover is fixedly installed at the air intake end of the air intake pipe. The air intake mesh cover is located inside the sound insulation mesh cover, and the sound insulation mesh cover is specifically conical.
[0011] This invention provides an ultra-low temperature explosion-proof nitrogen compressor. It has the following beneficial effects:
[0012] (1) By setting up protective components on the outside of the equipment, the equipment can be soundproofed by the soundproof mesh cover, so that there will be no serious noise pollution when it is working. The air inlet slots are opened on the front and back sides of the soundproof mesh cover, which will not seal the inside of the equipment and prevent the equipment from cooling down. At the same time, the soundproof mesh cover can prevent dust from falling on the instrument.
[0013] (2) By setting up an air inlet pipe, the gas can be diverted to the left side of the first-stage impeller, thereby cooling the first-stage impeller and gearbox, so that the instruments inside the soundproof mesh can be cooled. Attached Figure Description
[0014] Figure 1 This is a view showing the appearance of the present utility model;
[0015] Figure 2 This is a front view of the present invention;
[0016] Figure 3 This is a top view of the present invention;
[0017] Figure 4 This is an internal top view of the present invention;
[0018] Figure 5 This is an internal view of the present invention.
[0019] The text labels in the diagram represent: 1. Base plate; 2. Main motor; 3. Gearbox; 4. First stage impeller; 5. Sound insulation mesh cover; 6. Air intake pipe; 7. Air intake mesh cover; 8. Exhaust port; 9. Air intake slot. Detailed Implementation
[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way. Example
[0021] like Figure 1-5 As shown, an ultra-low temperature explosion-proof nitrogen compressor includes a base plate 1, a main motor 2 fixedly installed on the top of the base plate 1, a gearbox 3 fixedly installed on the top of the base plate 1, and a first-stage impeller 4 located on the left side of the gearbox 3. A protective assembly is provided on the top of the base plate 1.
[0022] The protective component is a soundproof mesh cover 5 fixedly installed on the top of the base plate 1. The main motor 2, gearbox 3 and first-stage impeller 4 are all located inside the soundproof mesh cover 5. Air intake slots 9 for air intake are opened on the right side of the front and rear ends of the soundproof mesh cover 5. Air intake grilles are provided at the air intake slots 9. An exhaust port 8 is provided on the top left side of the soundproof mesh cover 5.
[0023] By fixing a soundproof mesh cover 5 on the top of the base plate 1, and with the main motor 2, gearbox 3 and first-stage impeller 4 all located inside the soundproof mesh cover 5, the soundproof mesh cover 5 can reduce noise when the equipment is working. Air is then introduced through the air inlet slot 9 and exhausted through the exhaust port 8, thus exchanging air inside the soundproof mesh cover 5. This not only reduces noise but also cools the equipment.
[0024] An air inlet pipe 6 is provided at the left end of the soundproof mesh cover 5. One end of the air inlet pipe 6 is connected to the front side of the soundproof mesh cover 5, and the other end of the air inlet pipe 6 is connected to the left side of the soundproof mesh cover 5. The other end of the air inlet pipe 6 extends to the left side of the first-stage impeller 4.
[0025] When in operation, the rotation of the first-stage impeller 4 generates a low-pressure zone. Compared to other areas of the soundproof mesh cover 5, the rest of the interior of the soundproof mesh cover 5 is a high-pressure zone. At this time, the gas flows from the high-pressure zone through the air inlet pipe 6 to the low-pressure zone, thereby cooling the first-stage impeller 4 and the gearbox 3.
[0026] An air intake screen 7 is fixedly installed at the air intake end of the air intake pipe 6. The air intake screen 7 is located inside the sound insulation screen 5. The sound insulation screen 5 is specifically conical. Because the air intake screen 7 is installed, the gas can be filtered. Moreover, the conical shape of the air intake screen 7 increases the filter plate area.
[0027] Working principle: A soundproof mesh cover 5 is fixedly installed on the top of the base plate 1, and the main motor 2, gearbox 3, and first-stage impeller 4 are all located inside the soundproof mesh cover 5. When the equipment is working, the soundproof mesh cover 5 can reduce noise. Air is introduced through the air inlet slot 9 and exhausted through the exhaust port 8, which exchanges air inside the soundproof mesh cover 5. This not only reduces noise but also cools the equipment. When working, the rotation of the first-stage impeller 4 creates a low-pressure area. Compared to other areas inside the soundproof mesh cover 5, the rest of the area inside the soundproof mesh cover 5 is a high-pressure area. At this time, the gas flows from the high-pressure area to the low-pressure area through the air inlet pipe 6, thereby cooling the first-stage impeller 4 and gearbox 3, thus achieving the effect of cooling all the instruments inside the soundproof mesh cover 5.
[0028] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of this utility model. The above examples are merely to aid in understanding the method and core ideas of this utility model. The above descriptions are only preferred embodiments of this utility model. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of this utility model, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the concept and technical solution of this utility model to other situations without modification, should all be considered within the scope of protection of this utility model.
Claims
1. An ultra-low temperature explosion-proof nitrogen gas compressor, characterized in that: Includes a base plate (1), a main motor (2) fixedly installed on the top of the base plate (1), a gearbox (3) fixedly installed on the top of the base plate (1), and a first-stage impeller (4) located on the left side of the gearbox (3). The top of the base plate (1) is provided with a protective assembly. The protective component is a soundproof mesh cover (5) fixedly installed on the top of the base plate (1). The main motor (2), gearbox (3) and first-stage impeller (4) are all located inside the soundproof mesh cover (5). The front and rear right sides of the soundproof mesh cover (5) are provided with air intake slots (9) for air intake. An air intake grille is provided at the air intake slot (9). An exhaust port (8) is provided on the top left side of the soundproof mesh cover (5).
2. The ultra-low temperature explosion-proof nitrogen compressor according to claim 1, characterized in that: An air inlet pipe (6) is provided at the left end of the soundproof mesh cover (5). One end of the air inlet pipe (6) is connected to the front side of the soundproof mesh cover (5), and the other end of the air inlet pipe (6) is connected to the left side of the soundproof mesh cover (5). The other end of the air inlet pipe (6) extends to the left side of the first-stage impeller (4).
3. The ultra-low temperature explosion-proof nitrogen compressor according to claim 2, characterized in that: An air intake screen (7) is fixedly installed at the air intake end of the air intake pipe (6). The air intake screen (7) is located inside the sound insulation screen (5). The sound insulation screen (5) is specifically conical.