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CN-121993404-A - Pump body assembly, fluid machinery and heat exchange equipment

CN121993404ACN 121993404 ACN121993404 ACN 121993404ACN-121993404-A

Abstract

The invention provides a pump body assembly, a fluid machine and heat exchange equipment. The pump body assembly comprises a plurality of first cylinders, a plurality of second cylinders, a plurality of first flanges, a flange cover plate, a first lubricating oil circuit and a second lubricating oil circuit, wherein a partition plate is arranged between every two adjacent first cylinders, the second cylinder is smaller than the first cylinder, the first cylinders and the second cylinders are sequentially arranged along the axial direction, the first flanges and the second flanges are positioned between the first flanges and the second flanges, the flange cover plate is positioned on one side, away from the first flanges, of the second flanges and between the second flanges and the second cylinders, and the pump body assembly is provided with the first lubricating oil circuit and the second lubricating oil circuit and is used for lubricating and radiating at least the first cylinders and the second cylinders respectively. The invention solves the problem that the miniaturization design of the air cylinder in the fluid machinery in the prior art is limited.

Inventors

  • YAN WEIHAO
  • SU YONGQIANG
  • FU ZHENG
  • REN LIPING

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (13)

  1. 1. A pump body assembly, comprising: The device comprises a plurality of first cylinders (10), wherein a partition plate (100) is arranged between two adjacent first cylinders (10); The volume of the second air cylinder (20) is smaller than that of the first air cylinder (10), and a plurality of the first air cylinders (10) and the second air cylinders (20) are sequentially arranged along the axial direction; a first flange (60) and a second flange (70), a plurality of the first cylinders (10) being located between the first flange (60) and the second flange (70); A flange cover plate (90), wherein the flange cover plate (90) is positioned on one side of a second flange (70) away from the first flange (60) and is positioned between the second flange (70) and the second cylinder (20); The pump body assembly is provided with a first lubricating oil way and a second lubricating oil way, and is used for lubricating and radiating at least the first cylinder (10) and the second cylinder (20).
  2. 2. Pump body assembly according to claim 1, characterized in that the pump body assembly further comprises a crankshaft (30), the crankshaft (30) comprising a main body portion (31), an expanded diameter section (32) and a reduced diameter section (33), the outer periphery of the expanded diameter section (32) exceeding the outer periphery of the main body portion (31), the outer periphery of the reduced diameter section (33) not exceeding the outer periphery of the main body portion (31), the expanded diameter section (32) and the reduced diameter section (33) being arranged eccentrically in the axial direction of the main body portion (31); The number of the diameter expansion sections (32) is multiple, the diameter expansion sections (32) are respectively located in the first cylinders (10), and the diameter reduction sections (33) are located in the second cylinders (20) so as to respectively participate in the compression process in the rotation process of the crankshaft (30).
  3. 3. Pump body assembly according to claim 2, characterized in that the crankshaft (30) is provided with a central oil hole (34) extending in the axial direction and a first oil supply hole (35) extending in the radial direction, the first oil supply holes (35) are provided in plurality, the first oil supply holes (35) are respectively provided at least at the first flange (60), the first cylinder (10) and the second flange (70) and are communicated with the central oil hole (34), the flange cover plate (90) is provided with an oil outlet hole (91) extending in the radial direction, and lubricating oil in the first lubricating oil path enters the central oil hole (34) from an oil sump and then flows out from the first oil supply holes (35) to lubricate friction pairs of the first flange (60) and the crankshaft (30), the first roller (40) and the expanding section (32) of the pump body assembly and the second flange (70) and the crankshaft (30) respectively, and then flows back to the oil sump through the oil outlet hole (91).
  4. 4. A pump body assembly according to claim 3, wherein a diameter D1 of the oil outlet hole (91) and a diameter D2 of the center oil hole (34) satisfy 0.1< D1/D2 is equal to or smaller than 1.
  5. 5. A pump body assembly according to claim 3, wherein a diameter D1 of the oil outlet hole (91) and a diameter D3 of the first oil supply hole (35) satisfy 0.5-1/D3-1.5.
  6. 6. The pump body assembly according to claim 2, wherein the crankshaft (30) is provided with a central oil hole (34) extending in the axial direction and a second oil supply hole (36) extending in the radial direction, the second oil supply hole (36) is arranged at the second cylinder (20) and is communicated with the central oil hole (34), the flange cover plate (90) is provided with an oil outlet hole (91) extending in the radial direction, and lubricating oil in the second lubricating oil path enters the central oil hole (34) from an oil sump and then flows out of the second oil supply hole (36) so as to lubricate a friction pair of a second roller (50) and the reducing section (33) of the pump body assembly, and then flows back to the oil sump through a first oil outlet groove (110) on the lower end face of the crankshaft (30).
  7. 7. The pump body assembly according to claim 6, wherein the diameter D4 of the second oil supply hole (36) satisfies 1mm ∈d4 ∈4mm.
  8. 8. Pump body assembly according to claim 3 or 6, characterized in that the diameter D1 of the oil outlet hole (91) is 2mm +.d1 +.4 mm.
  9. 9. Pump body assembly according to claim 3 or 6, characterized in that the diameter D2 of the central oil hole (34) and the diameter D of the reduced diameter section (33) satisfy 0.40 ∈d2/D ∈0.65.
  10. 10. Pump body assembly according to claim 2, characterized in that the crankshaft (30) is provided with an axially extending central oil hole (34) and a radially extending first oil supply hole (35), the first oil supply hole (35) being a plurality, the first oil supply holes (35) being provided at least at the first flange (60), the first cylinder (10) and the second flange (70) respectively and communicating with the central oil hole (34), the reducing section (33) being provided with an axially extending second oil outlet groove (331), the lubricating oil in the first lubricating oil circuit entering the central oil hole (34) from an oil sump and then flowing out from the first oil supply holes (35) to lubricate the friction pair of the first flange (60) and the crankshaft (30), the first roller (40) and the expanding section (32) of the pump body assembly and the second flange (70) and the crankshaft (30) respectively, and then flowing back to the first oil sump (110) through the second oil outlet groove (331).
  11. 11. Pump body assembly according to claim 2, characterized in that the pump body assembly further comprises a cover plate (80), the second cylinder (20) is located between the flange cover plate (90) and the cover plate (80), the diameter reduction section (33) is located at the bottom end of the crankshaft (30), the first flange (60) is located above the second flange (70), the upper end face of the uppermost first cylinder (10) is in sealing connection with the first flange (60), the lower end face of the lowermost first cylinder (10) is in sealing connection with the second flange (70), the upper end face of the second cylinder (20) is in sealing connection with the flange cover plate (90), and the lower end face of the second cylinder (20) is in sealing connection with the cover plate (80).
  12. 12. A fluid machine comprising a pump body assembly according to any one of claims 1 to 11.
  13. 13. A heat exchange device comprising the fluid machine of claim 12.

Description

Pump body assembly, fluid machinery and heat exchange equipment Technical Field The invention relates to the technical field of heat exchange equipment, in particular to a pump body assembly, fluid machinery and heat exchange equipment. Background With the advancement of society and the development of heat exchange technology, coupling of fluid machinery such as a compressor with other functions and technologies has become a development trend in the field of heat exchange equipment, such as two-stage compression, three-stage compression, single-stage air supply, two-stage air supply, and the like. These functions often require multiple cylinder, more complex compressor configurations, with single cylinder compressors, two cylinder compressors, three cylinder compressors, and three cylinder and more multi-cylinder compressors in the prior art. However, the above-described multi-cylinder rotary compressor has the following problems. Each eccentric part and roller are contained in a cylinder chamber formed at the inner diameter part of the cylinder to eccentrically rotate, compared with a single-cylinder and double-cylinder compressor, the distance between the upper flange and the lower flange is increased, the crankshaft is easy to vibrate, the reliability of the multi-cylinder compressor is poor, the vibration noise is large, the aligning assembly process of the cylinder positioned in the middle is complex, and the assembly of the compressor is inconvenient. In addition, in order to consider the assembly relation and avoid affecting the efficiency of the large cylinder, the multi-cylinder compressor cannot properly adjust the volume of the small cylinder to achieve miniaturization and high efficiency, and further the power consumption generated by the friction pair in the cylinder is larger. Furthermore, the oil way lubricating system of the multi-cylinder compressor also lacks reasonable design, so that the heat transfer effect of the friction pair is influenced, and the overall energy efficiency of the compressor is further influenced. As described above, the prior art has a problem that the miniaturization design of the cylinder in the fluid machine is limited. Disclosure of Invention The invention mainly aims to provide a pump body assembly, a fluid machine and heat exchange equipment, so as to solve the problem that the miniaturization design of a cylinder in the fluid machine in the prior art is limited. In order to achieve the aim, according to one aspect of the invention, a pump body assembly is provided, which comprises a plurality of first cylinders, a partition plate is arranged between two adjacent first cylinders, the second cylinder is smaller than the first cylinder, the first cylinders and the second cylinders are sequentially arranged along the axial direction, a first flange and a second flange are arranged between the first flange and the second flange, a flange cover plate is arranged on one side, away from the first flange, of the second flange and between the second flange and the second cylinder, and the pump body assembly is provided with a first lubricating oil path and a second lubricating oil path for lubricating and radiating at least the first cylinder and the second cylinder respectively. The pump body assembly further comprises a crankshaft, the crankshaft comprises a main body part, an expanding section and a reducing section, the outer periphery of the expanding section exceeds the outer periphery of the main body part, the outer periphery of the reducing section does not exceed the outer periphery of the main body part, the expanding section and the reducing section are eccentrically arranged in the axial direction of the main body part, the expanding section is multiple, the expanding sections are respectively located in the first cylinders, and the reducing section is located in the second cylinder to respectively participate in the compression process in the rotation process of the crankshaft. Further, the crankshaft is provided with a central oil hole extending along the axial direction and a plurality of first oil supply holes extending along the radial direction, the plurality of first oil supply holes are respectively arranged at least at the first flange, the first cylinder and the second flange and are communicated with the central oil hole, the flange cover plate is provided with an oil outlet extending along the radial direction, lubricating oil in the first lubricating oil path enters the central oil hole from the oil pool and then flows out from the plurality of first oil supply holes so as to lubricate friction pairs of the first flange and the crankshaft, a first roller and an expanding section of the pump body assembly and a second flange and the crankshaft respectively, and then flows back to the oil pool through the oil outlet. Further, the diameter D1 of the oil outlet hole and the diameter D2 of the central oil hole are 0.1< D1/D2 less than or equal to 1.