Direct-current variable-frequency gentle-tone compressor with internal air intake

Abstract

The utility model belongs to the technical field of compressors, and particularly relates to an internal air inlet direct-current variable-frequency gentle-tone compressor which comprises a machine body, an air inlet sound insulation plate is fixedly connected to the side end of the machine body, a cavity A is formed between the air inlet sound insulation plate and the machine body, an eccentric wheel air inlet cavity is fixedly connected to the end, close to the machine body, of the cavity A, and a cavity B is formed in the end, away from the cavity A, of the machine body. First air inlets are fixedly formed in the two ends of the machine body, a second air inlet is formed in the end, away from the first air inlets, of the machine body, a first air outlet is formed in the side, close to the cavity A, of the top end of the machine body, and a second air outlet is formed in the end, away from the first air outlet, of the machine body. The two air inlets are formed in the two sides of the machine body, the first air inlet and the second air inlet can enable the compressor to provide more air, the pressure of the compressor is reduced, and therefore noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and specifically relates to a DC variable frequency silent compressor with internal air intake. Background Art

[0002] In the technical field of compressors, with the improvement of people's living quality and the increasingly strict requirements of industrial production for equipment performance, traditional compressors gradually expose many deficiencies and are difficult to meet the current usage requirements. Especially in terms of the noise problem, if the compressor supporting large equipment has too much noise, it may interfere with the normal detection of the equipment and lead to inaccurate detection results.

[0003] For example, the patent with publication number CN115503444A discloses a DC variable frequency air conditioner compressor and its usage method, which includes a compression device, a sealing bottom plate, a limit support device, a transmission device and a limit device. Four groups of limit devices for limiting are evenly and equidistantly fixedly installed on the upper end surface of the transmission device, and a compression device for guiding air is fixedly installed near the upper part of the inner end surfaces of the four groups of limit devices.

[0004] Through the setting of the limit support device in this patent, during the rapid maintenance of the compressor, the servo motor can synchronously drive the connecting support plate to rotate through the positioning rotating plate, so that the connecting support plate can synchronously drive the four groups of fixed sliding plates to displace through the positioning connecting head. At the same time, the fixed sliding plates can be separated from the limit device together. However, the compressor often generates relatively large noise during operation, which may interfere with the normal detection of the equipment and lead to inaccurate detection results. Content of the Utility Model

[0005] In order to solve the problem that relatively large noise is often generated during operation, which may interfere with the normal detection of the equipment and lead to inaccurate detection results, the utility model proposes a DC variable frequency silent compressor with internal air intake.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: a DC variable frequency silent compressor with internal air intake, including a body. An air intake sound insulation board is fixedly connected to the side end of the body. An A cavity is opened between the air intake sound insulation board and the body. An eccentric wheel air intake cavity is fixedly connected to one end of the A cavity close to the body. A B cavity is opened at one end of the body far from the A cavity. An air intake port one is fixedly opened at both ends of the body. An air intake port two is opened at one end of the body far from the air intake port one. An air outlet one is opened at one side of the top end of the body close to the A cavity. An air outlet two is opened at one end of the body far from the air outlet one.

[0007] Preferably, the air intake sound insulation board and the body are hermetically connected through a sealing ring to ensure that the A cavity and the B cavity are in a closed state during operation.

[0008] Preferably, the first air inlet and the second air inlet are located on both sides of the body and are symmetrically distributed, and the first air outlet and the second air outlet are located at the top of the body and are connected to the A cavity and the B cavity respectively.

[0009] Preferably, the body is made of carbon fiber reinforced polymer.

[0010] Preferably, the inner walls of cavities A and B are covered with porous sound-absorbing material.

[0011] The advantages of this utility model are:

[0012] 1. This utility model utilizes the communication structure between air inlet one, air inlet two and chambers A and B, and has two air inlets on both sides of the machine body. Air inlet one and air inlet two can provide more gas to the compressor, reduce the compressor pressure, and thus reduce noise. Air inlet one and air inlet two are respectively connected to chambers A and B of the eccentric wheel air inlet body. Air inlet sound insulation plates are set on the outside of chambers A and B to prevent gas leakage. Sealing rings are set on the air inlet sound insulation plates. After assembly, chambers A and B are sealed on the surface of the air inlet sound insulation plates, which can effectively reduce the operating noise of the compressor motor. Gas flows upward from chambers A and B of the air inlet body to the compressor outlet.

[0013] 2. This utility model utilizes the elastic sealing characteristics of the sealing ring to maintain good sealing performance under the dynamic environment of compressor operation, blocking gas leakage channels and noise propagation paths, thereby reducing gas leakage and noise propagation. Secondly, based on the symmetrical structural design, the pressure difference is used to make the gas enter the two chambers evenly, maintain the pressure balance in the chamber, ensure the stable operation of the compressor, and reduce component wear. The upward flow characteristics of gas and the direct connection between the outlet and the chamber reduce the gas discharge resistance and achieve efficient output of compressed gas.

[0014] 3. This utility model reduces the inertia and weight of the compressor body by using lightweight materials, thereby reducing vibration caused by inertia and resonance caused by weight, thus reducing mechanical vibration during operation. Based on the relationship between motor speed and power supply frequency and voltage, the motor speed is controlled by adjusting the power supply parameters to meet different load requirements and achieve energy saving. Furthermore, the stable torque output characteristics of the DC inverter motor are utilized to reduce motor vibration and achieve noise reduction. The special microstructure of the porous sound-absorbing material causes energy loss as noise waves propagate within it, thus absorbing noise and reducing the impact of noise on the surrounding environment. By increasing the heat dissipation area through the heat dissipation structure or by forcing airflow, the speed of heat transfer from the compressor body to the surrounding environment is accelerated, maintaining the normal operating temperature of the compressor. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection of the eccentric wheel air intake cavity of this utility model;

[0018] Figure 3 This is a schematic diagram of the top of the body connection of this utility model;

[0019] Figure 4 This is a schematic diagram of the air inlet connecting side end of this utility model;

[0020] Figure 5 This is a front view of the A-cavity connection of this utility model.

[0021] In the diagram: 1. Body; 2. Air intake sound insulation panel; 3. Chamber A; 4. Eccentric wheel air intake chamber; 5. Chamber B; 6. Air intake port one; 7. Air intake port two; 8. Air outlet one; 9. Air outlet two. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] Example 1

[0024] Please see Figures 1-5 As shown, a DC inverter low-noise compressor with internal air intake includes a body 1. An air intake sound insulation plate 2 is fixedly connected to the side end of the body 1. An A cavity 3 is opened between the air intake sound insulation plate 2 and the body 1. An eccentric wheel air intake cavity 4 is fixedly connected to the end of the A cavity 3 near the body 1. A B cavity 5 is opened at the end of the body 1 away from the A cavity 3. An air inlet 6 is fixedly opened at both ends of the body 1. An air inlet 7 is opened at the end of the body 1 away from the air inlet 6. An air outlet 8 is opened on the top of the body 1 near the A cavity 3. An air outlet 9 is opened at the end of the body 1 away from the air outlet 8.

[0025] For example, under the pressure difference generated by the operation of the compressor, the outside gas enters from inlet 6 and inlet 7 respectively. The gas entering inlet 6 flows into chamber A, and the gas entering inlet 7 flows into chamber B. The gas flows in the chamber and is finally discharged from outlet 8 and outlet 9, thus achieving efficient gas compression.

[0026] Furthermore, the intake sound insulation panel 2 and the body 1 are sealed together by a sealing ring to ensure that chamber A 3 and chamber B 5 are in a sealed state during operation;

[0027] For example, when the compressor is running, as the internal gas pressure changes and the mechanical parts vibrate, the sealing ring will undergo a certain degree of elastic deformation, always tightly fitting with the intake sound insulation plate 2 and the body 1. In this way, gas leakage in chambers A and B can be effectively prevented, whether under high pressure or low pressure. At the same time, the noise generated by the internal mechanical parts during operation will be blocked by the sealing ring and cannot be directly transmitted to the external environment, thereby significantly improving the quietness of the compressor.

[0028] Furthermore, air inlet 6 and air inlet 7 are located on both sides of the body 1 and are symmetrically distributed. Air outlet 8 and air outlet 9 are located at the top of the body 1 and are connected to cavity A 3 and cavity B 5 respectively.

[0029] For example, because inlet 6 and inlet 7 are symmetrically distributed, during compressor operation, external gas can enter chambers A and B simultaneously and in equal amounts under the same pressure difference. This ensures that the gas pressure in chambers A and B remains relatively balanced, avoiding pressure fluctuations caused by differences in intake volume. Uniform gas input also allows the compression components inside the compressor to be subjected to more even force, reducing wear and extending the compressor's service life. The high-pressure gas compressed inside the compressor flows upward under pressure. Since outlet 8 and outlet 9 are directly connected to chambers A and B respectively and are located at the top of the body 1, they conform to the natural upward flow of gas, reducing resistance during gas discharge. This structural design allows the compressed gas to be discharged quickly and smoothly from outlet 8 and outlet 9, improving gas output efficiency.

[0030] Furthermore, the body 1 is made of carbon fiber reinforced polymer, the body 1 is driven by a DC inverter motor, and the body 1 is designed as a modular unit.

[0031] For example, the compressor body 1 is made of lightweight materials (such as epoxy resin) to reduce overall weight and mechanical vibration during operation. During compressor operation, the lightweight material body 1 has lower inertia. When the motor drives the compressor, the lower inertia results in less mechanical vibration during startup, shutdown, and speed changes. Simultaneously, the reduced overall weight decreases the pressure on the mounting foundation, preventing resonance issues caused by excessive weight and further reducing vibration energy transmitted to the outside during compressor operation. The compressor is driven by a DC inverter motor, and speed control is achieved by adjusting the frequency and voltage of the input power supply to achieve energy saving and noise reduction. In actual use, the control system adjusts the power frequency and voltage of the input DC inverter motor in real time according to the compressor's load requirements. When the load is low, the power frequency and voltage are reduced, the motor speed decreases accordingly, and the compressor's compression capacity decreases, thus reducing energy consumption. When the load increases, the power frequency and voltage are increased, the motor speed increases to meet compression requirements. Furthermore, the operating characteristics of the DC inverter motor result in smoother torque output during speed regulation, reducing motor vibration and consequently lowering the noise generated during compressor operation.

[0032] Furthermore, an air intake sound insulation plate (2) is provided to isolate the running sound of the motor and prevent the noise from spreading out, thereby reducing the noise transmission effect;

[0033] For example, when gas flows in chambers A and B, and the internal mechanical components of the compressor generate noise, the noise wave propagates to the inner wall of the chamber. The intake sound insulation plate has a special sealing structure to prevent the noise wave from propagating outward. The noise wave is continuously reflected and refracted between the intake sound insulation plate and the chamber, and the energy is gradually consumed and converted into other forms of energy such as heat energy, thereby effectively absorbing the noise and reducing the intensity of the noise propagating outward.

[0034] Working principle: First, by utilizing the connection structure between air inlet 6 and air inlet 7 and chambers A and B, there are two air inlets on both sides of the machine body 1. Air inlet 6 and air inlet 7 can provide more gas to the compressor, reduce the compressor pressure, and thus reduce noise. Air inlet 6 and air inlet 7 are respectively connected to chamber A 3 of the eccentric wheel air inlet chamber 4 and chamber B 5 at the other end. An air intake sound insulation plate 2 is set on the outside of chamber A 3 and chamber B 5 at the other end to prevent gas leakage. A sealing ring is set on the air intake sound insulation plate 2. After assembly, chamber A 3 and chamber B 5 are sealed on the surface of the air intake sound insulation plate 2, which can effectively reduce the operating noise of the compressor motor.

[0035] Gas flows upward from chamber A (3) and chamber B (5) of the eccentric wheel inlet chamber 4 to the compressor outlet. Utilizing the elastic sealing properties of the sealing ring, good sealing performance is maintained under the dynamic operating environment of the compressor, blocking gas leakage channels and noise propagation paths, thus reducing gas leakage and noise transmission. Secondly, based on the symmetrical structural design, the pressure difference allows gas to enter both chambers evenly, maintaining pressure balance within the chambers and ensuring stable compressor operation while reducing component wear. The upward flow of gas and the direct connection between the outlet and the chamber reduce gas discharge resistance, achieving efficient compressed gas output. Furthermore, the use of lightweight materials reduces the inertia and weight of the machine body 1, minimizing vibrations caused by inertia and resonances caused by weight, thereby reducing... During operation, mechanical vibration is controlled by adjusting the power supply parameters to adjust the motor speed based on the relationship between motor speed and power supply frequency and voltage, thereby meeting different load requirements and achieving energy saving. Secondly, the stable torque output characteristics of the DC inverter motor are utilized to reduce motor vibration and achieve noise reduction. The special microstructure of porous sound-absorbing materials is used to continuously dissipate energy when noise waves propagate within them, thus absorbing noise and reducing its impact on the surrounding environment. By increasing the heat dissipation area through heat dissipation structures or by forcing airflow, the speed of heat transfer from the compressor body 1 to the surrounding environment is accelerated, maintaining the normal operating temperature of the compressor. Finally, based on the modular design concept, the precise connection and cooperation between modules reduces noise generation; and the independence of the modules enables convenient and quick disassembly and maintenance operations.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A direct current variable frequency light sound compressor with internal air intake, characterized in that, The device includes a body (1), an air intake sound insulation plate (2) is fixedly connected to the side end of the body (1), an A cavity (3) is opened between the air intake sound insulation plate (2) and the body (1), an eccentric wheel air intake cavity (4) is fixedly connected to the end of the A cavity (3) near the body (1), a B cavity (5) is opened at the end of the body (1) away from the A cavity (3), an air inlet one (6) is fixedly opened at both ends of the body (1), an air inlet two (7) is opened at the end of the body (1) away from the air inlet one (6), an air outlet one (8) is opened on the side of the top of the body (1) near the A cavity (3), and an air outlet two (9) is opened at the end of the body (1) away from the air outlet one (8).

2. The straight-flow variable-frequency light-sound compressor with internal air intake according to claim 1, characterized in that: The intake sound insulation plate (2) is sealed to the body (1) through a sealing ring, ensuring that the A cavity (3) and the B cavity (5) are in a sealed state during operation.

3. The straight-flow inverter light sound compressor of claim 1, wherein: The first air inlet (6) and the second air inlet (7) are located on both sides of the body (1) and are symmetrically distributed. The first air outlet (8) and the second air outlet (9) are located at the top of the body (1) and are connected to the A cavity (3) and the B cavity (5) respectively.

4. The straight-flow inverter light sound compressor of claim 1, wherein: The body (1) is made of carbon fiber reinforced polymer.

5. The straight-flow inverter light sound compressor of claim 1, wherein: The inner walls of cavity A (3) and cavity B (5) are covered with porous sound-absorbing material.

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