A housing for an electric compressor with noise reduction function

Abstract

This utility model relates to the field of electric compressor technology, specifically to an electric compressor housing with noise reduction function: It includes a housing body. First, multiple radial isolation reinforcing ribs are arranged in the annular low-pressure cavity, which can effectively slow down the refrigerant gas flow rate, change its direction, and reduce suction pulsation, thereby directly reducing noise caused by airflow pulsation. Second, through the oil return and exhaust channel arranged inside the high-pressure cavity, this channel can buffer the mixed gas of compressed high-temperature and high-pressure refrigerant and lubricating oil, slowing down its flow rate and achieving exhaust noise reduction. Finally, an irregular arc-shaped oil baffle structure is used to divide the central cavity into an independent oil return cavity. This structure can effectively reduce the impact of liquid lubricating oil and prevent the lubricating oil in the cavity from being re-entrained by the airflow and mixed with the refrigerant, thereby significantly improving oil return efficiency and lubrication reliability, and avoiding mechanical noise caused by poor lubrication.

Description

Technical Field

[0001] This utility model relates to the field of electric compressor technology, and in particular to an electric compressor housing with noise reduction function. Background Technology

[0002] With the widespread application of electric compressors in refrigeration, air conditioning, and new energy vehicles, the requirements for noise control during operation are becoming increasingly stringent. Traditional electric compressor housings, due to the high-speed flow of refrigerant gas, suction pulsation, and the sudden release of high-temperature, high-pressure mixed gases during operation, are prone to generating significant airflow noise and mechanical vibration noise, severely impacting the overall quietness of the unit and the user experience.

[0003] Furthermore, the flow control of the lubricating oil inside the compressor also directly affects the noise level. In conventional housing designs, the lubricating oil is easily subjected to airflow impact, resulting in secondary mixing. This not only reduces oil return efficiency and leads to deterioration of lubrication conditions, but also generates abnormal noise due to oil slugging and insufficient lubrication.

[0004] In summary, traditional electric compressor housings lack effective control over refrigerant airflow pulsation and velocity, resulting in significant airflow noise. Furthermore, the lack of buffering and noise reduction design during the discharge process after the high-pressure airflow mixes with lubricating oil easily generates exhaust noise. At the same time, lubricating oil is easily re-entrained by the airflow, which reduces lubrication efficiency and can also cause additional mechanical noise due to poor lubrication. Summary of the Invention

[0005] The purpose of this utility model is to provide an electric compressor housing with noise reduction function, which solves the problems of traditional electric compressor housings lacking effective control over refrigerant airflow pulsation and velocity, resulting in significant airflow noise, and lacking buffer and noise reduction design during the discharge process after high-pressure airflow mixes with lubricating oil, which easily generates exhaust noise. At the same time, lubricating oil is easily entrained by airflow, which reduces lubrication efficiency and easily causes additional mechanical noise due to poor lubrication.

[0006] To achieve the above objectives, this utility model provides an electric compressor housing with noise reduction function. The electric compressor housing with noise reduction function includes a housing body, and an inner cavity is provided inside the housing body. A high-low pressure isolation platform is provided inside the inner cavity, and the high-low pressure isolation platform divides the inner cavity into an annular low-pressure cavity and a central cavity. An irregular arc-shaped oil baffle structure is provided inside the central cavity, and the irregular arc-shaped oil baffle structure divides the central cavity into a high-pressure cavity and an oil return cavity. The annular low-pressure chamber is provided with multiple radial isolation reinforcing ribs, the high-pressure chamber is provided with an oil return and exhaust channel, the outer wall of the shell body is provided with a stepped exhaust channel, the oil return and exhaust channel is connected to the stepped exhaust channel, the end of the oil return and exhaust channel away from the stepped exhaust channel extends into the interior of the oil return chamber, the end of the oil return and exhaust channel extending into the interior of the oil return chamber is provided with an oil return hole, and the end of the oil return and exhaust channel located inside the high-pressure chamber is provided with an air inlet.

[0007] The high and low pressure isolation platform is provided with an irregularly shaped annular sealing ring on its end face.

[0008] The high-pressure chamber has a pressure relief hole on its inner side, which is connected to the external environment through a pressure relief valve.

[0009] The inner sides of the housing cavity are provided with positioning bosses, which are used to fix and cooperate in the installation of the static vortex disk.

[0010] The outer surface of the housing body is provided with annular groove reinforcing ribs and straight groove reinforcing ribs. The annular groove reinforcing ribs correspond to the high and low pressure isolation platform, and the straight groove reinforcing ribs correspond to the oil return and exhaust channels.

[0011] The shell body has cylindrical lugs at both the top and bottom, and multiple stud mounting bosses on the outside.

[0012] The oil return and exhaust channel is cylindrical at one end near the stepped exhaust channel, and the intake hole is provided at the cylindrical oil return and exhaust channel. The oil return and exhaust channel is semi-cylindrical at one end away from the stepped exhaust channel, and the oil return hole is provided at the semi-cylindrical oil return and exhaust channel away from the cylindrical oil return and exhaust channel.

[0013] This utility model discloses a noise-reducing electric compressor housing, comprising a housing body with an inner cavity. The inner cavity contains a high-low pressure isolation platform that divides the inner cavity into an annular low-pressure cavity and a central cavity. The central cavity contains an irregularly shaped arc-shaped oil-blocking structure that divides the central cavity into a high-pressure cavity and an oil return cavity. Firstly, the multiple radial isolation reinforcing ribs arranged within the annular low-pressure cavity effectively slow down the refrigerant gas flow rate, change its direction, and reduce suction. The pulsation directly reduces the noise generated by the airflow pulsation. Secondly, the oil return and exhaust channel set inside the high-pressure chamber can buffer the mixed gas of compressed high-temperature and high-pressure refrigerant and lubricating oil, slow down its flow rate, and achieve exhaust noise reduction. Finally, the irregular arc-shaped oil baffle structure divides the central cavity into an independent oil return chamber. This structure can effectively reduce the impact of liquid lubricating oil and prevent the lubricating oil in the chamber from being re-entrained by the airflow and mixed with the refrigerant, thereby significantly improving the oil return efficiency and lubrication reliability, and avoiding mechanical noise caused by poor lubrication. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the structure of the electric compressor housing with noise reduction function provided by this utility model.

[0016] Figure 2 This is a front structural diagram of the inner cavity of the shell provided by this utility model.

[0017] Figure 3 This is a schematic diagram of the external structure of the shell body provided by this utility model.

[0018] Figure 4 This is a cross-sectional structural diagram of the oil return and exhaust channel provided by this utility model.

[0019] 101-Shell body, 102-High and low pressure isolation platform, 103-Annular low pressure chamber, 104-Irregular arc-shaped oil baffle structure, 105-High pressure chamber, 106-Return oil chamber, 107-Radial isolation reinforcing rib, 108-Return oil exhaust channel, 109-Stepped exhaust channel, 110-Return oil hole, 111-Air inlet, 112-Irregular annular sealing ring, 113-Pressure relief hole, 114-Positioning boss, 115-Annular groove reinforcing rib, 116-Straight groove reinforcing rib, 117-Cylindrical support lug, 118-Screw mounting boss, 119-Cylindrical return oil exhaust channel, 120-Semi-cylindrical return oil exhaust channel. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] Please see Figures 1 to 4 This utility model provides an electric compressor housing with noise reduction function. The electric compressor housing with noise reduction function includes a housing body 101. The housing body 101 has an inner cavity. The inner cavity has a high and low pressure isolation platform 102. The high and low pressure isolation platform 102 divides the inner cavity into an annular low pressure cavity 103 and a central cavity. The central cavity has an irregular arc-shaped oil baffle structure 104. The irregular arc-shaped oil baffle structure 104 divides the central cavity into a high pressure cavity 105 and an oil return cavity 106. The annular low-pressure chamber 103 is provided with a plurality of radial isolation reinforcing ribs 107. The high-pressure chamber 105 is provided with an oil return exhaust channel 108. The outer side wall of the housing body 101 is provided with a stepped exhaust channel 109. The oil return exhaust channel 108 is connected to the stepped exhaust channel 109. The end of the oil return exhaust channel 108 away from the stepped exhaust channel 109 extends into the interior of the oil return chamber 106. The end of the oil return exhaust channel 108 extending into the interior of the oil return chamber 106 is provided with an oil return hole 110. The end of the oil return exhaust channel 108 located inside the high-pressure chamber 105 is provided with an air inlet hole 111.

[0022] In this embodiment, firstly, the multiple radial isolation reinforcing ribs 107 provided in the annular low-pressure chamber 103 can effectively slow down the refrigerant gas flow rate, change its direction, and reduce suction pulsation, thereby directly reducing the noise caused by airflow pulsation. Secondly, the oil return and exhaust channel 108 provided inside the high-pressure chamber 105 can buffer the mixed gas of compressed high-temperature and high-pressure refrigerant and lubricating oil, slow down its flow rate, and achieve exhaust noise reduction. Finally, the irregular arc-shaped oil baffle structure 104 is used to divide the central chamber into an independent oil return chamber 106. This structure can effectively reduce the impact of liquid lubricating oil and prevent the lubricating oil in the chamber from being re-entrained by the airflow and mixed with the refrigerant, thereby significantly improving the oil return efficiency and lubrication reliability, and avoiding mechanical noise caused by poor lubrication.

[0023] Furthermore, the end face of the high and low pressure isolation platform 102 is provided with an irregularly shaped annular sealing ring 112.

[0024] In this embodiment, the irregularly shaped annular sealing ring 112 cooperates with the high and low pressure isolation platform 102 to effectively isolate the annular low pressure chamber 103 from the high pressure chamber 105, preventing refrigerant gas from moving around in the chamber and affecting the exhaust pulsation.

[0025] Furthermore, a pressure relief hole 113 is provided on the inner side of the high-pressure chamber 105, and the pressure relief hole 113 is connected to the external environment through a pressure relief valve.

[0026] In this embodiment, the pressure relief hole 113 is provided inside the high-pressure chamber 105, and is connected to the external environment through the pressure relief valve, so that the internal pressure under specific conditions can be released, thereby better protecting the compressor.

[0027] Furthermore, positioning bosses 114 are provided on both sides of the inner cavity of the housing, and the positioning bosses 114 are used to fix and cooperate in the installation of the static vortex disk.

[0028] In this embodiment, the positioning boss 114 can be used to fix and cooperate with the installation of the static vortex disk, preventing it from rotating and moving.

[0029] Furthermore, the outer surface of the housing body 101 is provided with annular groove reinforcing ribs 115 and straight groove reinforcing ribs 116. The annular groove reinforcing ribs 115 correspond to the high and low pressure isolation platform 102, and the straight groove reinforcing ribs 116 correspond to the oil return and exhaust channel 108.

[0030] In this embodiment, the arrangement of the annular groove reinforcing rib 115 and the straight groove reinforcing rib 116 not only facilitates the processing and manufacturing of the shell, but also increases the surface area of ​​the shell to increase its heat dissipation and avoids heat concentration affecting the exhaust effect.

[0031] Furthermore, cylindrical lugs 117 are provided at both the upper and lower ends of the housing body 101, and multiple stud mounting bosses 118 are provided on the outside of the housing body 101.

[0032] In this embodiment, the cylindrical lug 117 is an embedded structure, which makes the entire shell structure more compact and also forms a unique appearance structure of the shell. At the same time, cylindrical steps are set in the inner holes at both ends of the lug for the vibration damping rubber sleeve to fit and assemble, thereby reducing the noise and vibration caused by the installation of the lug, thus achieving effective noise reduction of the shell.

[0033] Furthermore, the end of the oil return exhaust channel 108 near the stepped exhaust channel 109 is a cylindrical oil return exhaust channel 119, and the air inlet 111 is provided at the cylindrical oil return exhaust channel 119. The end of the oil return exhaust channel 108 away from the stepped exhaust channel 109 is a semi-cylindrical oil return exhaust channel 120, and the oil return hole 110 is provided at the end of the semi-cylindrical oil return exhaust channel 120 away from the cylindrical oil return exhaust channel 119.

[0034] In this embodiment, to facilitate the smooth assembly of the static vortex disk for housing assembly, the oil return exhaust channel 108 is milled at a 45-degree angle to form a unique exhaust channel structure, such that one end of the oil return exhaust channel 108 is a cylindrical oil return exhaust channel 119, and the other end is a semi-cylindrical oil return exhaust channel 120. The cylindrical oil return exhaust channel 119 is provided with an air inlet 111 on the side of the high-pressure chamber 105, allowing the high-temperature and high-pressure refrigerant gas and oil-gas mixture to smoothly enter the oil separator structure. At the same time, two oil return holes 110 are provided below the semi-cylindrical oil return exhaust channel 120, allowing the lubricating oil separated by the oil separator to flow into the oil return chamber 106. Meanwhile, the upper part of the stepped exhaust channel 109 is provided with two steps to facilitate the installation of the exhaust pipe. Because the connection between the semi-cylindrical oil return exhaust channel 120 and the cylindrical oil return exhaust channel 119 has an inverted conical structure transition, it cooperates with the oil separator to form an oil-gas separation channel, which fully separates the lubricating oil and refrigerant gas. The refrigerant gas rises along the exhaust channel and is discharged into the air conditioning system, while the oil and gas condense into oil after separation at the inverted conical structure. The oil adheres to the inner wall of the semi-circular oil return exhaust channel 108 and continuously converges to the bottom of the semi-circular oil return exhaust channel 108. It then flows into the oil return chamber 106 through the oil return hole 110 and returns to the compressor, maintaining the internal lubrication of the compressor and avoiding the phenomenon of secondary mixing after oil and gas separation. This improves the separation efficiency of oil and gas and refrigerant gas, reduces the risk of oil blockage, and thus improves the cooling performance.

[0035] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A housing for an electric compressor with noise reduction function, characterized in that, The device includes a housing body, inside which is a housing cavity. Inside the housing cavity is a high-low pressure isolation platform, which divides the housing cavity into an annular low-pressure cavity and a central cavity. Inside the central cavity is an irregularly shaped arc-shaped oil baffle structure, which divides the central cavity into a high-pressure cavity and a return oil cavity. The annular low-pressure chamber is provided with multiple radial isolation reinforcing ribs, the high-pressure chamber is provided with an oil return and exhaust channel, the outer wall of the shell body is provided with a stepped exhaust channel, the oil return and exhaust channel is connected to the stepped exhaust channel, the end of the oil return and exhaust channel away from the stepped exhaust channel extends into the interior of the oil return chamber, the end of the oil return and exhaust channel extending into the interior of the oil return chamber is provided with an oil return hole, and the end of the oil return and exhaust channel located inside the high-pressure chamber is provided with an air inlet.

2. The electric compressor housing with noise reduction function as described in claim 1, characterized in that, The high and low pressure isolation platform is provided with an irregularly shaped annular sealing ring on its end face.

3. The electric compressor housing with noise reduction function as described in claim 1, characterized in that, The high-pressure chamber is provided with a pressure relief hole on its inner side, and the pressure relief hole is connected to the external environment through a pressure relief valve.

4. The electric compressor housing with noise reduction function as described in claim 1, characterized in that, Positioning bosses are provided on both sides of the inner cavity of the housing. The positioning bosses are used to fix and cooperate in the installation of the static vortex disk.

5. The electric compressor housing with noise reduction function as described in claim 1, characterized in that, The outer surface of the housing body is provided with annular groove reinforcing ribs and straight groove reinforcing ribs. The annular groove reinforcing ribs correspond to the high and low pressure isolation platform, and the straight groove reinforcing ribs correspond to the oil return and exhaust channels.

6. The electric compressor housing with noise reduction function as described in claim 1, characterized in that, The upper and lower ends of the housing body are provided with cylindrical lugs, and the exterior of the housing body is provided with multiple stud mounting bosses.

7. The electric compressor housing with noise reduction function as described in claim 1, characterized in that, The oil return and exhaust channel is cylindrical at one end near the stepped exhaust channel, and the intake hole is provided at the cylindrical oil return and exhaust channel. The oil return and exhaust channel is semi-cylindrical at the other end away from the stepped exhaust channel, and the oil return hole is provided at the other end of the semi-cylindrical oil return and exhaust channel away from the cylindrical oil return and exhaust channel.

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