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CN-121993403-A - Pump body assembly, fluid machinery and heat exchange equipment

CN121993403ACN 121993403 ACN121993403 ACN 121993403ACN-121993403-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 second cylinder, a crankshaft, a flange cover plate and a working phase angle range of the second cylinder and the adjacent first cylinder is 70-120 degrees or minus 110-60 degrees, wherein the volume of the second cylinder is smaller than that of the first cylinder, the crankshaft comprises a main body part, an expanding section and a reducing section, 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 positioned in the first cylinder, the reducing section is positioned in the second cylinder so as to respectively participate in a compression process in the rotation process of the crankshaft, the first flange and the second flange are positioned between the first flange and the second flange, the flange cover plate is positioned on one side of the second flange far from the first flange and between the second flange and the second cylinder. The invention solves the problem that the miniaturization design of the air cylinder in the fluid machinery in the prior art is limited.

Inventors

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

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (11)

  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 crankshaft (30), wherein the crankshaft (30) comprises a main body part (31), an expanding section (32) and a reducing section (33), the outer periphery of the expanding section (32) exceeds the outer periphery of the main body part (31), the outer periphery of the reducing section (33) does not exceed the outer periphery of the main body part (31), and the expanding section (32) and the reducing section (33) are eccentrically arranged in the axial direction of the main body part (31); The number of the diameter expansion sections (32) is multiple, the diameter expansion sections (32) are respectively positioned in the first cylinders (10), and the diameter reduction sections (33) are positioned in the second cylinders (20) so as to respectively participate in the compression process in the rotation process of the crankshaft (30); 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 the second flange (70) away from the first flange (60) and is positioned between the second flange (70) and the second cylinder (20); The working phase angle of the second cylinder (20) with the adjacent first cylinder (10) ranges from 70 DEG to 120 DEG or-110 DEG to-60 deg.
  2. 2. Pump body assembly according to claim 1, characterized in that two adjacent enlarged diameter segments (32) are arranged eccentrically with respect to the main body portion (31) towards opposite directions; The diameter-reducing section (33) and the adjacent diameter-enlarging section (32) are eccentrically arranged in opposite directions relative to the main body part (31), or The diameter-reducing section (33) and the adjacent diameter-enlarging section (32) are eccentrically arranged in the same direction with respect to the main body (31).
  3. 3. The pump body assembly of claim 2, wherein, When the diameter-reducing section (33) and the adjacent diameter-expanding section (32) are eccentrically arranged in opposite directions relative to the main body part (31), the working phase angle between the second cylinder (20) and the adjacent first cylinder (10) ranges from 70 DEG to 120 DEG; When the diameter-reducing section (33) and the adjacent diameter-enlarging section (32) are eccentrically arranged in the same direction relative to the main body (31), the working phase angle between the second cylinder (20) and the adjacent first cylinder (10) ranges from-110 DEG to-60 deg.
  4. 4. The pump body assembly of claim 3, wherein, When the diameter-reducing section (33) and the adjacent diameter-expanding section (32) are eccentrically arranged in opposite directions relative to the main body part (31), the working phase angle between the second cylinder (20) and the adjacent first cylinder (10) ranges from 88 DEG to 102 DEG; When the diameter-reducing section (33) and the adjacent diameter-enlarging section (32) are eccentrically arranged in the same direction relative to the main body (31), the working phase angle between the second cylinder (20) and the adjacent first cylinder (10) ranges from-92 DEG to-78 deg.
  5. 5. Pump body assembly according to claim 1, characterized in that the first cylinder (10) has a first slide groove (11) and the second cylinder (20) has a second slide groove (21), wherein the width T1 of the first slide groove (11) and the width T2 of the second slide groove (21) satisfy T1/T2<1.7.
  6. 6. Pump body assembly according to claim 1, characterized in that the first cylinder (10) has a first slide groove (11), the second cylinder (20) has a second slide groove (21), wherein, The diameter-reducing section (33) and the adjacent diameter-expanding section (32) are eccentrically arranged towards opposite directions relative to the main body part (31), and the included angle beta between the first sliding vane groove (11) and the second sliding vane groove (21) is more than or equal to-90 degrees and less than or equal to 80 degrees, or the included angle beta between the first sliding vane groove and the second sliding vane groove (11) is more than or equal to-90 degrees and less than or equal to 80 degrees The diameter-reducing section (33) and the adjacent diameter-expanding section (32) are eccentrically arranged towards the same direction relative to the main body part (31), and the included angle beta between the first sliding vane groove (11) and the second sliding vane groove (21) is more than or equal to 90 degrees and less than or equal to 260 degrees.
  7. 7. Pump body assembly according to claim 1, characterized in that the suction pressure of the second cylinder (20) is greater than the suction pressure of the first cylinder (10).
  8. 8. Pump body assembly according to claim 1, characterized in that it further comprises a first roller (40) and a second roller (50), said first roller (40) and said second roller (50) being housed respectively in said first cylinder (10) and in said second cylinder (20), said expansion section (32) moving said first roller (40) and said reduction section (33) moving said second roller (50).
  9. 9. Pump body assembly according to claim 1, 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).
  10. 10. A fluid machine comprising a pump body assembly according to any one of claims 1 to 9.
  11. 11. A heat exchange device comprising the fluid machine of claim 10.

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 above object, according to one aspect of the present invention, there is provided a pump body assembly including a plurality of first cylinders, a partition plate disposed between two adjacent first cylinders, a second cylinder having a smaller volume than the first cylinder, the plurality of first cylinders and the second cylinder being sequentially arranged in an axial direction, a crankshaft including a main body portion, an expanded diameter section, and a reduced diameter section, an outer circumference of the expanded diameter section exceeding an outer circumference of the main body portion, an outer circumference of the reduced diameter section not exceeding an outer circumference of the main body portion, the expanded diameter section and the reduced diameter section being eccentrically disposed in an axial direction of the main body portion, wherein the expanded diameter section is disposed in the plurality of first cylinders, the reduced diameter section is disposed in the second cylinder, respectively, to participate in a compression process during rotation of the crankshaft, the first flange and the second flange are disposed between the first flange and the second flange, the flange cover is disposed on a side of the second flange remote from the first flange and between the second flange, and the second flange is disposed in a working phase angle range of from about-60 ° to about 60 ° adjacent first cylinders to about-120 °. Further, the two adjacent expanded diameter sections are arranged eccentrically in opposite directions with respect to the main body portion, the reduced diameter section and the adjacent expanded diameter section are arranged eccentrically in opposite directions with respect to the main body portion, or the reduced diameter section and the adjacent expanded diameter section are arranged eccentrically in the same direction with respect to the main body portion. Further, when the diameter-reducing section and the adjacent diameter-expanding section are eccentrically arranged in opposite directions relative to the main body, the range of the operating phase angle between the second cylinder and the adjacent first cylinder is 70 DEG to 120 DEG, and when the diameter-reducing section and the adjacent diameter-expanding section are eccentrically arranged in the same direction relative to the main body, the range of the operating phase angle between the second cylinder and the adjacent first cylinder is-110 DEG to-60 deg. Further, when the diameter-