Liquid storage cylinder structure and compressor

Abstract

The application belongs to the technical field of compressors and discloses a liquid storage cylinder structure and a compressor, which comprise a liquid storage cylinder body; a filter screen assembly and a hollow partition plate assembly are arranged in a hollow cavity of the liquid storage cylinder body in an upper-lower interval mode and sequentially divide the hollow cavity of the liquid storage cylinder body into an air suction space, a liquid storage space and a liquid distribution space from top to bottom; an upper port of an air outlet straight pipe extends to below the filter screen assembly, a lower port of the air outlet straight pipe penetrates through the hollow partition plate assembly and extends into the liquid distribution space; one side of a lower surface of the hollow partition plate assembly is provided with an air outlet elbow pipe connecting hole, and the other side of the lower surface of the hollow partition plate assembly is provided with a gas return hole; the air outlet elbow pipe is arranged in the liquid distribution space, one end of the air outlet elbow pipe is connected with the air outlet elbow pipe connecting hole, and the other end of the air outlet elbow pipe extends to the outside of the liquid storage cylinder body; the application can reduce the liquid amount in air suction, prevent the phenomenon of liquid compression of a pump body, simultaneously, help to inhibit air suction noise and vibration, and improve the adaptability and reliability of the compressor.

Description

Technical Field

[0001] This invention belongs to the field of refrigeration compressor technology, and specifically relates to a liquid storage tank structure and a compressor. Background Technology

[0002] With the development of air conditioner technology, the requirements for its Annual Performance Factor (APF) are becoming increasingly stringent. Under special operating conditions involving low-temperature intermediate cooling, a higher liquid refrigerant charge is prone to occur, leading to problems such as poor compressor compatibility, low noise, and lower reliability. The reasons for this are as follows: (see attached...) Figure 1 As shown, in existing compressor receivers, a filter assembly 3 is typically installed inside the receiver cylinder 1. The filter assembly 3 divides the hollow cavity of the receiver cylinder 1 into an upper suction chamber and a lower receiver chamber. However, the space in the lower receiver chamber is limited, making it impossible to effectively separate the gaseous refrigerant from the liquid refrigerant or lubricating oil. This causes the liquid refrigerant or lubricating oil to enter the compressor pump body along with the gaseous refrigerant, resulting in liquid-laden compression in the pump body. Consequently, this leads to poor lubrication and high noise levels in the compressor. Summary of the Invention

[0003] To address the technical problems existing in the prior art, the present invention provides a liquid storage tank structure and a compressor to solve the problem that existing liquid storage tanks cannot effectively separate gaseous refrigerant and liquid refrigerant or lubricating oil, which easily leads to the phenomenon of liquid being compressed in the pump body, resulting in poor lubrication and high noise in the compressor.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides a liquid storage cylinder structure, including a liquid storage cylinder body, a filter assembly, a straight air outlet pipe, an elbow air outlet pipe, and a hollow partition assembly; The filter assembly and the hollow partition assembly are arranged vertically and horizontally within the hollow cavity of the liquid storage cylinder, and the hollow cavity of the liquid storage cylinder is divided from top to bottom into an air intake space, a liquid storage space and a liquid distribution space. The straight vent pipe is disposed within the liquid storage space. The upper end of the straight vent pipe extends to the bottom of the filter assembly, and the lower end of the straight vent pipe passes through the hollow partition assembly and extends into the liquid distribution space. The hollow partition assembly has a partition cavity inside, and a gas outlet bend connection hole is provided on one side of the lower surface of the hollow partition assembly, and a gas return hole is provided on the other side of the lower surface of the hollow partition assembly; wherein, the gas return hole is used to connect the liquid separation space with the partition cavity. The vent bend is located within the liquid separation space. One end of the vent bend is connected to the vent bend connection hole, and the other end of the vent bend extends to the outside of the liquid storage cylinder.

[0005] Furthermore, the hollow partition assembly includes an upper partition, a lower partition, and an annular support plate; The upper partition and the lower partition are arranged parallel to each other, and the annular support plate is disposed between the upper partition and the lower partition; wherein, the upper partition, the lower partition and the annular support plate together form the partition cavity, and the outer surface of the annular support plate is sealed to the inner wall of the liquid storage cylinder. The upper partition has a through hole for a straight air outlet pipe at its center, and the lower partition has a connection hole for a straight air outlet pipe at its center; the lower end of the straight air outlet pipe passes through the through hole for a straight air outlet pipe, extends downward, and connects to the connection hole for a straight air outlet pipe. Both the outlet bend connection hole and the return air hole are located on the lower partition plate. The outlet bend connection hole is located on one side of the outlet straight pipe connection hole, and the return air hole is located on the other side of the outlet straight pipe connection hole.

[0006] Furthermore, it also includes a support frame; the support frame is disposed within the liquid storage space and sleeved on the outside of the gas outlet straight pipe; wherein, one end of the support frame is fixedly connected to the gas outlet straight pipe, and the other end of the support frame is fixedly connected to the inner wall of the liquid storage cylinder.

[0007] Furthermore, a first oil return hole is provided on the air outlet straight pipe. The first oil return hole is located near one end of the hollow partition assembly and is positioned above the upper surface of the hollow partition assembly.

[0008] Furthermore, it also includes an air inlet pipe, which is located at the upper opening of the liquid storage cylinder; wherein, one end of the air inlet pipe is connected to the upper opening of the liquid storage cylinder, and the other end of the air inlet pipe is used to connect to the air intake pipe of the air conditioner.

[0009] Furthermore, the venting bend includes a vertical pipe section and a horizontal pipe section, and a bend through hole is provided on the lower side wall of the liquid storage cylinder. The vertical pipe section is located within the liquid distribution space, and the upper end of the vertical pipe section is connected to the air outlet bend connection hole; one end of the horizontal pipe section extends into the liquid distribution space and is connected to the lower end of the vertical pipe section, and the other end of the horizontal pipe section passes through the bend through hole and extends to the outside of the liquid storage cylinder.

[0010] Furthermore, the straight exhaust pipe and the curved exhaust pipe are both fixed to the hollow partition assembly by welding.

[0011] The present invention also provides a compressor, including a compressor pump body and a liquid receiver, wherein the liquid receiver adopts the liquid receiver cylinder structure described above, and the outlet bend of the liquid receiver cylinder structure is used to connect to the air intake of the compressor pump body.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a liquid storage cylinder structure and a compressor. A filter assembly and a hollow partition assembly divide the internal cavity of the liquid storage cylinder into an intake space, a liquid storage space, and a liquid distribution space. The lower end of the outlet straight pipe passes through the hollow partition assembly and extends into the liquid distribution space, introducing the gas flowing out of the outlet straight pipe into the liquid distribution space. This reduces the gas flow rate and achieves a secondary liquid separation effect for the gaseous refrigerant using the liquid storage and distribution spaces. This significantly reduces the amount of liquid in the intake gas, preventing liquid-laden compression in the compressor pump. Simultaneously, the intake gas flow rate is reduced twice within the liquid storage and distribution spaces, buffering the intake gas, reducing intake pulsation, increasing intake pressure, and helping to suppress intake noise and vibration. This, in turn, improves the adaptability and reliability of the compressor. Attached Figure Description

[0013] Figure 1 This is a structural diagram of an existing liquid storage tank structure; Figure 2 This is a schematic diagram of the liquid storage cylinder structure described in this invention; Figure 3 This is a schematic diagram of the assembly structure of the straight exhaust pipe, the hollow partition assembly, and the exhaust bend in this invention. Figure 4 This is a front view of the hollow partition assembly in this invention; Figure 5 This is a top view of the hollow partition assembly in this invention.

[0014] The components include: 1. Liquid storage cylinder body; 2. Air inlet pipe; 3. Filter assembly; 4. Air outlet straight pipe; 5. Air outlet bend pipe; 6. Support frame; 7. Hollow partition assembly; 101. Suction space; 102. Liquid storage space; 103. Liquid distribution space; 401. First oil return hole; 501. Second oil return hole; 701. Upper partition plate; 702. Lower partition plate; 703. Annular support plate; 704. Air outlet straight pipe connection hole; 705. Air outlet bend pipe connection hole; 706. Air return hole. Detailed Implementation

[0015] To make the technical problems solved by the present invention, the technical solutions, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of the present invention. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0016] As attached Figure 2-3The present invention provides a liquid storage cylinder structure, including a liquid storage cylinder body 1, an air inlet pipe 2, a filter assembly 3, an air outlet straight pipe 4, an air outlet bend 5, a support frame 6, and a hollow partition assembly 7.

[0017] The liquid storage cylinder 1 is a hollow, sealed cylindrical structure. An upper opening is located at the center of the top of the liquid storage cylinder 1, and a bent pipe through-hole is located on the lower side wall of the liquid storage cylinder 1. The upper opening is used to install the air inlet pipe 2, and the bent pipe through-hole is used to install the air outlet bent pipe 5. Specifically, the air inlet pipe 2 is located above the top of the liquid storage cylinder 1, with one end connected to the upper opening of the liquid storage cylinder 1 and the other end connected to the air intake pipe of the air conditioner.

[0018] The filter assembly 3 and the hollow partition assembly 7 are arranged vertically at intervals within the hollow cavity of the liquid storage cylinder 1, dividing the hollow cavity of the liquid storage cylinder 1 into an air intake space 101, a liquid storage space 102, and a liquid distribution space 103 from top to bottom. The space formed by the upper surface of the filter assembly 3 and the upper structure of the liquid storage cylinder 1 is the air intake space 101. The space formed by the lower surface of the filter assembly 3, the middle part of the liquid storage cylinder 1, and the upper surface of the hollow partition assembly 7 is the liquid storage space 102. The space formed by the lower surface of the hollow partition assembly 7 and the lower structure of the liquid storage cylinder 1 is the liquid distribution space 103.

[0019] Specifically, the filter assembly 3 is disposed inside the liquid storage cylinder 1 and near the upper end of the liquid storage cylinder 1; the filter assembly 3 is used to filter impurity particles in the inhaled fluid, and the filter assembly 3 divides the hollow cavity of the liquid storage cylinder 1 into an upper cavity and a lower cavity; wherein, the upper cavity is located above the filter assembly 3, which is the air intake space 101.

[0020] The hollow partition assembly 7 is disposed in the lower cavity and is located near the bottom end of the liquid storage cylinder 1; the hollow partition assembly 7 divides the lower cavity into an upper space and a lower space; wherein, the upper space is located above the hollow partition assembly 7, which is the liquid storage space 102; the lower space is located below the hollow partition assembly 7, which is the liquid distribution space 103.

[0021] The straight vent pipe 4 is disposed within the liquid storage space 102. The upper end of the straight vent pipe 4 extends upwards to below the filter assembly 3, and the lower end of the straight vent pipe 4 penetrates the hollow partition assembly 7 and extends into the liquid distribution space 103. The upper end of the straight vent pipe 4 is connected to the liquid storage space 102, and the lower end of the straight vent pipe 4 is connected to the liquid distribution space 103. Preferably, the straight vent pipe 4 is vertically disposed within the liquid storage space 102. Furthermore, the outlet straight pipe 4 is coaxially arranged with the liquid storage cylinder 1; a first oil return hole 401 is provided on the outlet straight pipe 4, the first oil return hole 401 is located near one end of the hollow partition assembly 7 and is positioned above the upper surface of the hollow partition assembly 7; by providing the first oil return hole 401 on the outlet straight pipe 4, the lubricating oil separated in the liquid storage space 102 can flow back to the compressor pump body through the first oil return hole 401, thereby ensuring the lubrication conditions of the compressor pump body.

[0022] The venting bend 5 is disposed within the liquid distribution space 103. One end of the venting bend 5 is connected to the venting bend connection hole 705 on the hollow partition assembly 7. The other end of the venting bend 5 extends through the bend through hole to the outside of the liquid storage cylinder 1 and is connected to the suction port of the compressor pump body.

[0023] Specifically, the outlet bend 5 includes a vertical pipe section and a horizontal pipe section. The vertical pipe section is located within the liquid distribution space 103, and its upper end is connected to the outlet bend connection hole 705 on the hollow partition assembly 7. One end of the horizontal pipe section extends into the liquid distribution space 103 and is connected to the lower end of the vertical pipe section. The other end of the horizontal pipe section passes through the bend through hole and extends to the outside of the liquid storage cylinder 1. The horizontal pipe section is fixed to the bend through hole by welding. A second oil return hole 501 is provided on the horizontal pipe section. The second oil return hole 501 is located within the liquid distribution space 103 and is positioned near the lower end of the vertical pipe section. By providing the second oil return hole 501 on the horizontal pipe section, the lubricating oil separated in the liquid distribution space 103 can flow back to the compressor pump body through the second oil return hole 501, thereby ensuring the lubrication conditions of the compressor pump body.

[0024] The support frame 6 is disposed within the liquid storage space 102 and sleeved on the outside of the vent pipe 4; wherein, the support frame 6 is disposed near the upper end of the vent pipe 4, one end of the support frame 6 is fixedly connected to the vent pipe 4, and the other end of the support frame 6 is fixedly connected to the inner wall of the liquid storage cylinder 1; preferably, the vent pipe 4 and the support frame 6 are fixedly welded together; by setting the support frame 6 between the liquid storage cylinder 1 and the vent pipe 4, and using the support frame 6 to fix the vent pipe 4 and the liquid storage cylinder 1 together, the stability and reliability of the vent pipe 4 are effectively improved.

[0025] As attached Figure 4-5 As shown, the hollow partition assembly 7 has a partition cavity inside, and the four sides of the hollow partition assembly 7 are sealed to the inner wall of the liquid storage cylinder 1; wherein, one side of the lower surface of the hollow partition assembly 7 is provided with an outlet bend pipe connection hole 705, and the other side of the lower surface of the hollow partition assembly 7 is provided with a return air hole 706; wherein, the outlet bend pipe connection hole 705 and the return air hole 706 are respectively provided on both sides of the outlet straight pipe 4, the outlet bend pipe connection hole 705 is used to connect to the outlet bend pipe 5, and the return air hole 706 is used to communicate the liquid separation space 103 with the partition cavity.

[0026] Specifically, the hollow partition assembly 7 includes an upper partition 701, a lower partition 702, and an annular support plate 703. The upper partition 701 and the lower partition 702 are parallel to each other and spaced apart. The annular support plate 703 is vertically disposed between the upper partition 701 and the lower partition 702. The upper end of the annular support plate 703 is perpendicularly connected to the outer edge of the upper partition 701, and the lower end of the annular support plate 703 is perpendicularly connected to the outer edge of the lower partition 702. The outer surface of the annular support plate 703 is sealed to the inner wall of the liquid storage cylinder 1. The upper partition 701, the lower partition 702, and the annular support plate 703 together form the partition cavity.

[0027] The upper partition 701 has a through hole for a straight air outlet pipe at its center, and the lower partition 702 has a connecting hole 704 for a straight air outlet pipe at its center. The lower end of the straight air outlet pipe 4 passes through the through hole and extends downwards to connect with the connecting hole 704. Preferably, the outer side of the straight air outlet pipe 4 is welded to the periphery of the through hole, and the lower end of the straight air outlet pipe 4 is welded to the periphery of the connecting hole 704. The air outlet bend is connected... Both the hole 705 and the return air hole 706 are provided on the lower partition plate 702. The outlet bend connection hole 705 is located on one side of the outlet straight pipe connection hole 704, and the return air hole 706 is located on the other side of the outlet straight pipe connection hole 704. The upper end of the vertical pipe section is welded to the periphery of the outlet bend connection hole 705. One side of the return air hole 706 communicates with the liquid separation space 103, and the other side of the return air hole 706 communicates with the interior of the partition plate cavity.

[0028] Working principle: The liquid storage cylinder structure of this invention divides the cylinder into an intake space, a liquid storage space, and a liquid distribution space by arranging filter components and hollow partition components at intervals on the upper and lower parts of the cylinder. Compared with the existing liquid storage cylinders with upper and lower cavities, the addition of a liquid distribution space effectively improves the liquid distribution capacity of the liquid storage cylinder. Secondly, the lower end of the outlet straight pipe passes through the hollow partition component and extends into the liquid distribution space, so that the gas flowing out of the outlet straight pipe is introduced into the liquid distribution space. Under the premise of achieving secondary liquid distribution, the gas flow rate is effectively reduced. At the same time, it plays a buffering role for the intake gas, which can reduce the intake pulsation and help suppress intake noise and vibration.

[0029] Specifically, when the liquid storage cylinder structure is in operation, the suction fluid flowing from the air intake pipe of the air conditioner enters the suction space 101 of the liquid storage cylinder body 1 through the air intake pipe 2. After impurities are filtered by the filter screen assembly 3, the suction fluid enters the liquid storage space 102. Since the suction fluid is a high-speed suction airflow carrying liquid, its flow rate decreases sharply after entering the liquid storage space 102, and a primary separation of gas and liquid occurs under gravity. The gas after the primary separation enters the liquid separation space 103 through the upper port of the outlet straight pipe 4. After entering the liquid separation space 102, the flow rate decreases sharply again. Under the influence of gravity, the gas and liquid undergo secondary separation. The gas after secondary separation flows into the partition cavity of the hollow partition assembly 7 through the return air hole 706 on the hollow partition assembly 7, and then flows into the pump body of the compressor through the outlet bend connection hole 705 and the outlet bend 5. Thus, by utilizing the secondary liquid separation effect of the liquid storage space 102 and the liquid separation space 103, the liquid in the suction is greatly reduced, even to the point of being completely liquid-free. At the same time, it achieves a buffering effect on the suction gas, reducing suction pulsation and the amount of liquid in the suction, which helps to suppress suction noise and vibration, thereby improving the adaptability and reliability of the compressor product.

[0030] The present invention also provides a compressor, including a compressor pump body and a liquid receiver; the liquid receiver adopts the liquid receiver cylinder structure described above; specifically, the outlet bend 5 of the liquid receiver cylinder structure is used to connect to the air intake of the compressor pump body; wherein, the structure of the compressor pump body and the assembly relationship between the liquid receiver cylinder structure and the compressor pump body are basically the same as the existing structure, and will not be described in detail here.

[0031] The liquid storage cylinder structure and compressor of this invention employ a filter assembly and a hollow partition assembly spaced vertically within the liquid storage cylinder body to divide the cylinder body into an intake space, a liquid storage space, and a liquid distribution space. The lower end of the outlet straight pipe passes through the hollow partition assembly and extends into the liquid distribution space. The hollow partition assembly drastically changes the gas flow direction, reducing the gas velocity and achieving a secondary liquid distribution effect. Simultaneously, the reduced gas velocity buffers the intake gas, reducing intake pulsation and helping to suppress intake noise and vibration. The outlet straight pipe is fixed to the supporting frame and the hollow partition assembly by welding, and the outlet bend is fixed to the hollow partition assembly and the liquid storage cylinder body by welding, effectively ensuring the stability and reliability of the outlet straight pipe and the outlet bend.

[0032] In this invention, the liquid storage cylinder is designed as a three-chamber structure. By arranging filter assemblies and hollow partition assemblies at intervals above and below the cylinder body, the cylinder is divided into an intake space, a liquid storage space, and a liquid distribution space. Compared to existing liquid storage cylinders with upper and lower chambers, a liquid distribution space is added. Secondly, the lower end of the outlet straight pipe passes through the hollow partition assembly and extends into the liquid distribution space, allowing the gas flowing out of the outlet straight pipe to be introduced into the liquid distribution space, reducing the gas flow rate and achieving a secondary liquid distribution effect. Simultaneously, it buffers the intake gas, reducing intake pulsation and helping to suppress intake noise and vibration, thereby improving the adaptability and reliability of the compressor product. The liquid storage cylinder structure is suitable for different operating conditions, different application fields, and compressors with different displacements. These different application fields include air conditioning, heat pump heating, and refrigeration.

[0033] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. A liquid storage cylinder structure, characterized in that, It includes a liquid storage cylinder body (1), a filter screen assembly (3), an air outlet straight pipe (4), an air outlet bend pipe (5), and a hollow partition assembly (7); The filter assembly (3) and the hollow partition assembly (7) are arranged vertically at intervals in the hollow cavity of the liquid storage cylinder (1), and the hollow cavity of the liquid storage cylinder (1) is divided from top to bottom into an air intake space (101), a liquid storage space (102) and a liquid distribution space (103). The straight air outlet pipe (4) is disposed in the liquid storage space (102). The upper port of the straight air outlet pipe (4) extends to the bottom of the filter assembly (3), and the lower port of the straight air outlet pipe (4) passes through the hollow partition assembly (7) and extends into the liquid distribution space (103). The hollow partition assembly (7) has a partition cavity inside. One side of the lower surface of the hollow partition assembly (7) is provided with an outlet bend connection hole (705), and the other side of the lower surface of the hollow partition assembly (7) is provided with a return air hole (706). The return air hole (706) is used to connect the liquid separation space (103) with the partition cavity. The venting bend (5) is located in the liquid separation space (103). One end of the venting bend (5) is connected to the venting bend connection hole (705), and the other end of the venting bend (5) extends to the outside of the liquid storage cylinder (1).

2. The liquid storage cylinder structure according to claim 1, characterized in that, The hollow partition assembly (7) includes an upper partition (701), a lower partition (702), and an annular support plate (703); The upper partition (701) and the lower partition (702) are arranged parallel to each other vertically, and the annular support plate (703) is disposed between the upper partition (701) and the lower partition (702); wherein the upper partition (701), the lower partition (702) and the annular support plate (703) together form the partition cavity, and the outer surface of the annular support plate (703) is sealed to the inner wall of the liquid storage cylinder (1); The upper partition (701) has a through hole for a straight air outlet pipe at its center, and the lower partition (702) has a connecting hole (704) for a straight air outlet pipe at its center. The lower end of the straight air outlet pipe (4) passes through the through hole for a straight air outlet pipe, extends downward, and connects with the connecting hole (704). The exhaust bend connection hole (705) and the return air hole (706) are both provided on the lower partition plate (702). The exhaust bend connection hole (705) is located on one side of the exhaust straight pipe connection hole (704), and the return air hole (706) is located on the other side of the exhaust straight pipe connection hole (704).

3. The liquid storage cylinder structure according to claim 1, characterized in that, It also includes a support frame (6); the support frame (6) is disposed in the liquid storage space (102) and sleeved on the outside of the gas outlet straight pipe (4); wherein, one end of the support frame (6) is fixedly connected to the gas outlet straight pipe (4), and the other end of the support frame (6) is fixedly connected to the inner wall of the liquid storage cylinder (1).

4. The liquid storage cylinder structure according to claim 1, characterized in that, The air outlet straight pipe (4) is provided with a first oil return hole (401), which is located near one end of the hollow partition assembly (7) and is positioned above the upper surface of the hollow partition assembly (7).

5. The liquid storage cylinder structure according to claim 1, characterized in that, It also includes an air inlet pipe (2), which is located at the upper opening of the liquid storage cylinder (1); wherein, one end of the air inlet pipe (2) is connected to the upper opening of the liquid storage cylinder (1), and the other end of the air inlet pipe (2) is used to connect to the air intake pipe of the air conditioner.

6. The liquid storage cylinder structure according to claim 1, characterized in that, The venting bend (5) includes a vertical pipe section and a horizontal pipe section, and a bend through hole is provided on the lower side wall of the liquid storage cylinder (1). The vertical pipe section is located in the liquid distribution space (103), and the upper end of the vertical pipe section is connected to the air outlet bend connection hole (705); one end of the horizontal pipe section extends into the liquid distribution space (103) and is connected to the lower end of the vertical pipe section, and the other end of the horizontal pipe section extends through the bend through hole to the outside of the liquid storage cylinder (1).

7. The liquid storage cylinder structure according to claim 6, characterized in that, A second oil return hole (501) is provided on the horizontal pipe section. The second oil return hole (501) is located in the liquid distribution space (103) and is set near the lower end of the vertical pipe section.

8. The liquid storage cylinder structure according to claim 1, characterized in that, The straight exhaust pipe (4) and the bent exhaust pipe (5) are both fixed to the hollow partition assembly (7) by welding.

9. A compressor, comprising a compressor pump body and a liquid receiver, characterized in that, The liquid storage device adopts the liquid storage cylinder structure as described in any one of claims 1-8, and the outlet bend (5) of the liquid storage cylinder structure is used to connect to the air intake of the compressor pump body.

Images