Screw air compressor with low air inlet temperature

Abstract

The utility model provides a screw air compressor with low air inlet temperature. The screw air compressor comprises a frame, a main engine and a cooling fan, wherein the main engine and the cooling fan are arranged in the frame; a first door plate is arranged on one side of the frame in the length direction, and a second door plate is arranged on the upper side of the frame in the height direction. An air inlet box is arranged at the position, corresponding to the first door plate, in the frame, and an air inlet is formed in the first door plate in the thickness direction in a penetrating mode. The air inlet box is provided with an air filter, one side of the air filter is communicated with the air inlet, and the other side of the air filter is communicated with the air inlet of the main machine through an air inlet hose; the cooling fan is arranged below the position, corresponding to the second door plate, in the frame, and an air outlet is formed in the second door plate in a penetrating mode in the thickness direction.

Description

Technical Field

[0001] This utility model relates to a screw air compressor. Background Technology

[0002] The working principle of a screw air compressor lies in the rotation of a pair of meshing screw rotors within a housing. This compression of air drawn in through the intake port within the narrow gap between the rotors and the housing results in the discharge of high-pressure gas. During this process, the compressor's intake temperature is a crucial parameter, directly affecting its energy efficiency, lifespan, and operational stability.

[0003] Excessively high intake air temperature will lead to a reduction in exhaust volume. Reduced exhaust volume, while the unit power remains constant, means a decrease in overall energy efficiency. Screw air compressors are widely used in industrial production, and as an important air source device, their energy efficiency directly affects energy consumption and production costs.

[0004] To address the aforementioned issues, common existing solutions include: 1. Optimizing the working environment; 2. Installing a cooling device at the air inlet. To optimize the air compressor's working environment, firstly, ensure good ventilation in the installation location, such as by installing exhaust fans to lower the machine room temperature and promptly remove heat generated during machine operation, reducing the impact of ambient temperature on the intake gas temperature. Secondly, avoid direct sunlight and high-temperature heat sources near the air compressor to reduce the heating effect of external heat sources on the intake gas. Simultaneously, regularly clean dust and debris around the air compressor to maintain a clean environment and ensure effective heat dissipation. However, most air compressors operating in high-temperature environments are located in machine rooms or industrial areas, requiring significant manpower and resources; otherwise, it is impossible to guarantee that the air compressor will maintain a good working environment for an extended period.

[0005] Installing a cooling device, such as a cooler or chiller unit, at the air inlet pre-cools the intake air, lowering its temperature before it enters the compressor. It is important to note that cleaning and maintaining the cooler is crucial; otherwise, cooling efficiency will be compromised. Utility Model Content

[0006] The main technical problem to be solved by this utility model is to provide a screw air compressor with low intake temperature, which effectively reduces the intake temperature of screw air compressors and improves their service life, operating efficiency and reliability.

[0007] To solve the above-mentioned technical problems, this utility model provides a screw air compressor with low intake air temperature, including: a frame, a main unit placed inside the frame and a cooling fan; the frame is provided with a first door panel along one side along the length direction and a second door panel along the upper side along the height direction;

[0008] An air inlet box is provided within the frame corresponding to the position of the first door panel, and an air inlet is provided through the first door panel along its thickness direction; an air filter is provided within the air inlet box, one side of the air filter is connected to the air inlet, and the other side is connected to the air inlet of the main unit through an air intake hose; a cooling fan is provided within the frame below the position corresponding to the second door panel, and an air outlet is provided through the second door panel along its thickness direction.

[0009] In a preferred embodiment: the first door panel and the frame are detachably connected.

[0010] In a preferred embodiment: a heat dissipation guide plate is installed on the air inlet box to cool the gas entering the air inlet box.

[0011] In a preferred embodiment: the diameter of the air intake hose is not less than the diameter of the main unit's air intake port.

[0012] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0013] This invention provides a screw air compressor with low intake air temperature. The air filter is directly mounted on the air inlet box, near the first door panel, eliminating the need for piped inlet, greatly reducing frictional heat, and facilitating maintenance. The air filter can be removed simply by opening the first door panel. The diameter of the intake hose should be no less than the diameter of the main unit's air inlet to reduce the temperature increase of the gas during transportation. The large overall air intake avoids the problem of insufficient air volume, and the top exhaust design effectively prevents hot air from flowing back into the machine body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cooling principle of the air compressor in a preferred embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the air compressor in a preferred embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the air compressor from another angle in a preferred embodiment of the present invention. Detailed Implementation

[0017] To make the technical solution and features of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific examples. It should be understood that these examples are only for illustrating this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

[0018] like Figure 1-3This embodiment provides a screw air compressor with low intake air temperature, including: a frame 5, a main unit 6 placed inside the frame 5 and a cooling fan 7; the frame 5 is provided with a first door panel a along one side along the length direction and a second door panel b along the upper side along the height direction;

[0019] An air inlet box 1 is located within the frame 5 corresponding to the position of the first door panel a, with an air inlet extending through the first door panel a along its thickness. An air filter 2 is installed within the air inlet box 1, with one side connected to the air inlet and the other side connected to the air inlet of the main unit 6 via an intake hose 3. A cooling fan 7 is located below the position of the second door panel b within the frame 5, with an air outlet extending through the second door panel b along its thickness. Furthermore, the first door panel a and the frame 5 are detachably connected. A heat dissipation guide plate 8 is installed on the air inlet box 1 to cool the gas entering it. The diameter of the intake hose 3 is not less than the diameter of the air inlet of the main unit 6.

[0020] During operation, the gas (cold air) enters through the large air inlet on the first door panel a of the screw air compressor. The air filter 2 is installed on the air inlet box 1. The air inlet box 1 and the frame 5 have no gaps except for the air inlet. The first door panel a and the air inlet box 1 form a special cavity, and the entire machine's intake port is directly opposite the air inlet. Part of the intake gas passes directly through the air filter 2 and reaches the air inlet 4 of the main unit 6 via a short, straight intake hose 3. The other part enters the air compressor housing through the air inlet of the air inlet box 1. After absorbing a certain amount of heat inside the housing, the hot air is blown out through the exhaust port of the second door panel b at the top by the cooling fan 7.

[0021] Air filter 2 is the first line of defense against dust and impurities entering the air compressor. The resistance, damage level, and frequency of replacement of air filter 2 directly affect the air filtration quality and intake air temperature. Most screw air compressors on the market connect air filter 2 to the intake components via a pipe or housing of a certain length. When the intake path is narrow or curved, airflow slows down and generates frictional heat; alternatively, air filter 2 is placed inside the air compressor housing, where the temperature is higher, thus increasing the intake air temperature. In this embodiment, air filter 2 is directly installed on the intake housing 1, near the first door panel a. This eliminates the need for pipes, greatly reducing frictional heat and facilitating maintenance. Air filter 2 can be removed simply by opening the first door panel a. The diameter of the intake hose 3 should not be less than the diameter of the intake port 4 of the main unit 6. Elbows should be avoided, and the length should be as short as possible to reduce the temperature increase of the gas during transport. The large-area intake design avoids insufficient airflow, and the top exhaust design effectively prevents hot air from flowing back into the machine body.

[0022] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A low intake temperature screw air compressor characterized by The application relates to a cooling device for a host computer, which comprises a frame, a host computer arranged in the frame and a cooling fan; a first door plate is arranged on one side of the frame along the length direction, and a second door plate is arranged on the upper side of the frame along the height direction; an air inlet box is arranged in the frame at the position corresponding to the first door plate, and the first door plate is arranged with an air inlet along the thickness direction; the air inlet box is provided with an air filter, one side of the air filter is communicated with the air inlet, and the other side is communicated with the air inlet of the host computer through an air inlet hose; the cooling fan is arranged below the position corresponding to the second door plate in the frame, and the second door plate is arranged with an air outlet along the thickness direction. The first door plate and the frame are in detachable connection. A heat dissipation guide plate is arranged on the air inlet box and used for cooling the gas entering the air inlet box.

2. A low intake temperature screw air compressor as claimed in claim 1, characterized in that: The pipe diameter of the air inlet hose is not less than the caliber of the air inlet of the host computer.

3. A low intake temperature screw air compressor as claimed in claim 1, characterized in that: ​ 4. A low intake temperature screw air compressor as set forth in claim 1 wherein: ​

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