CN112576502B - Pump body assembly, compressor and air conditioner with same - Google Patents

Pump body assembly, compressor and air conditioner with same Download PDF

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Publication number
CN112576502B
CN112576502B CN202011409868.9A CN202011409868A CN112576502B CN 112576502 B CN112576502 B CN 112576502B CN 202011409868 A CN202011409868 A CN 202011409868A CN 112576502 B CN112576502 B CN 112576502B
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China
Prior art keywords
roller
flange
gap
section
compressor
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Active
Application number
CN202011409868.9A
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Chinese (zh)
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CN112576502A (en
Inventor
魏会军
徐嘉
柳鹏
杨欧翔
丁少鹏
金冀龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Priority to CN202011409868.9A priority Critical patent/CN112576502B/en
Publication of CN112576502A publication Critical patent/CN112576502A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/10—Stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts

Abstract

The application provides a pump body assembly, a compressor and an air conditioner with the same, and the air conditioner comprises a crankshaft, a flange and a roller, wherein an eccentric part is arranged on the crankshaft; the flange is arranged on the crankshaft; the roller is arranged on the eccentric part; and a gap is formed between the end part of the flange and the end surface of the roller. According to the pump body assembly, the compressor and the air conditioner with the same, abrasion between the end face of the roller and the end face of the lower flange can be prevented.

Description

Pump body assembly, compressor and air conditioner with same
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to a pump body assembly, a compressor and an air conditioner with the pump body assembly and the compressor.
Background
At present, the roller is an important part inside the rolling rotor type compressor, and the reliability of the roller is very important. Moreover, the contact surface state between the roller and the crankshaft and between the roller and the upper and lower flanges directly affects the reliability and performance of the compressor.
However, the pump body structure in the conventional rolling rotor compressor mainly includes an upper flange, a cylinder, a lower flange, a crankshaft, a vane, and a roller. The roller revolves around the axis of the crankshaft in the cylinder along with the crankshaft and rotates around the axis of the roller, and the movement state is complex. And the roller is in direct contact with the end surface of the lower flange, so that in the running process of the compressor, the friction between the roller and the lower flange accounts for an important part in the friction power consumption of the compressor, and when the working condition is severe, the compressor can be directly failed due to the abrasion generated between the end surface of the roller and the end surface of the lower flange.
Therefore, how to provide a pump body assembly capable of preventing abrasion between the roller end surface and the lower flange end surface, a compressor and an air conditioner with the same becomes a problem which needs to be solved by the technical personnel in the field.
Disclosure of Invention
Therefore, an object of the present invention is to provide a pump body assembly, a compressor and an air conditioner having the same, which can prevent the roller end surface and the lower flange end surface from being worn.
In order to solve the above problem, the present application provides a pump body assembly including:
the crankshaft is provided with an eccentric part;
the flange is arranged on the crankshaft;
and a roller; the roller is arranged on the eccentric part; and a gap is formed between the end part of the flange and the end surface of the roller.
Preferably, the pump body assembly further comprises a cylinder; the height of the roller is smaller than the height of the cylinder in the central axis direction of the crankshaft.
Preferably, the flange comprises a first flange; the gap comprises a first gap; the first gap is arranged between the end part of the first flange and the first end surface of the roller;
and/or, the flange comprises a second flange; the gap comprises a second gap; the second gap is disposed between an end of the second flange and the second end face of the roller.
Preferably, the first gap has a width h 1; the width of the second gap is h 2; wherein h1 is h 2.
Preferably, the eccentric part is provided with a supporting surface; the roller is provided with a connecting part; the connecting part is arranged on the supporting surface.
Preferably, a projection is arranged on the outer peripheral wall of the eccentric part; the upper surface of the projection forms a support surface.
Preferably, the roller has an inner bore; the eccentric part is positioned in the inner hole; the inner hole comprises a first section and a second section which are sequentially arranged from top to bottom; the first section is matched with the eccentric part; the second section is matched with the bulge.
Preferably, the outer diameter of the eccentric portion is D1; the bulge is an annular bulge; the annular bulge is arranged around the peripheral wall of the eccentric part in the circumferential direction; the outer diameter of the annular protrusion is D2; the aperture of the first section is D3; the aperture of the second section is D4; wherein D2> D1; and/or, D4> D3; and/or, D4-D2 ≠ D3-D1;
and/or the first section and the second section are connected through a connecting surface; the connecting surface forms a connecting part; the connecting surface is arranged on the supporting surface; and the connecting surface is attached to the supporting surface.
Preferably, the height of the roller in the direction of the central axis of the bore is h 7; the height of the second section is h 6; when D4-D2> D3-D1, h6> h 7/2;
and/or, when D4-D2< D3-D1, h6< h 7/2.
Preferably, a third gap is provided between the protrusion and the end of the flange;
and/or the peripheral wall of the bulge is connected with the upper surface of the bulge through a chamfer.
According to still another aspect of the present application, there is provided a compressor, including a pump body assembly, the pump body assembly being the above pump body assembly.
According to still another aspect of the present application, there is provided an air conditioner including a compressor, the compressor being the above-mentioned compressor.
The application provides a pump body subassembly, compressor and have its air conditioner, have the clearance between the tip of flange and the terminal surface of roller, can prevent to produce wearing and tearing between roller terminal surface and the lower flange terminal surface.
Drawings
FIG. 1 is a schematic structural view of a pump body assembly according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a pump body assembly according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a crankshaft according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a roller according to an embodiment of the present application.
The reference numerals are represented as:
1. a crankshaft; 11. an eccentric portion; 111. a protrusion; 112. a support surface; 21. a first flange; 22. a second flange; 3. a roller; 31. a connecting surface; 4. and a cylinder.
Detailed Description
Referring to fig. 1-2 in combination, according to an embodiment of the present application, a pump body assembly includes a crankshaft 1, a flange, and a roller 3, wherein an eccentric portion 11 is provided on the crankshaft 1; the flange is arranged on the crankshaft 1; the roller 3 is mounted on the eccentric portion 11; and a gap is formed between the end part of the flange and the end surface of the roller 3, so that the abrasion between the end surface of the roller 3 and the end surface of the lower flange can be effectively prevented.
The application also discloses some embodiments, the pump body assembly further comprises a cylinder 4; the height of the roller 3 is smaller than the height of the cylinder 4 in the central axis direction of the crankshaft 1.
The present application also discloses some embodiments, the flange comprising a first flange 21; the gap comprises a first gap; a first gap is provided between the end of the first flange 21 and the first end face of the roller 3;
the flanges include a second flange 22; the gap comprises a second gap; a second gap is provided between the end of the second flange 22 and the second end face of the roller 3.
The pump body assembly includes a first flange 21, a second flange 22, a cylinder 4, a roller 3, and a crankshaft 1. The first flange 21 is an upper flange; the second flange 22 is a lower flange; after the installation, the upper end surface of the roller 3 and the end surface of the upper flange are provided with a first gap, and the lower end surface of the roller 3 and the end surface of the lower flange are provided with a second gap. Due to the existence of the first gap and the second gap, the upper end surface and the lower end surface of the roller 3 are prevented from being in direct contact with the end surfaces of the flanges, so that the abrasion between the roller 3 and the flanges is avoided.
The present application also discloses embodiments in which the first gap has a width h 1; the width of the second gap is h 2; wherein h1 is h 2.
The clearance between the end face of the roller 3 and the end face of the flange is directly related to the leakage amount between the air suction and exhaust cavities, and the leakage amount Q is in direct proportion to the third power of the clearance in a mathematical relationship: q-3。
If the clearance between the end surface of the roller 3 and the end surface of the flange is H, if the clearance is reserved between the end surface of the roller 3 and the end surface of one of the flanges and the width of the clearance is H, the leakage rate is Q1 ^ H3。
When the first gap and the second gap are provided, the leakage amounts of the first gap and the second gap at the upper and lower end surfaces in the present application are q1 ^ h1, respectively3，q2∝h23(ii) a The total leakage rate is Q2 ═ Q1+ Q2 ℃ (h 1)3+h23)。
When the total gap is equal in both schemes, i.e. H1+ H2, then H is equal3＝(h1+h2)3＞(h13+h23) That is, Q1 mustAnd greater than Q2. It is clear that when having a first gap and a second gap, the amount of leakage is greatly reduced, i.e. a large gap is split into two small gaps, which may reduce the total amount of leakage at the end face. Further, it is found that the leakage amount can reach the minimum value when H1H 2H/2.
The application also discloses embodiments, the eccentric part 11 is provided with a support surface 112; the roller 3 is provided with a connecting part; the connecting portion is disposed on the supporting surface 112. The support surface 112 may be a plane facing upward, or may be any surface such as an inclined surface or a curved surface. Through the cooperation of the supporting surface 112, the roller 3 is supported on the eccentric part 11 of the crankshaft 1, so that the lower end surface of the roller 3 is not directly contacted with the lower flange end surface, and the upper end surface of the roller 3 is not directly contacted with the upper flange end surface, thereby avoiding the abrasion between the end surface of the roller 3 and the flange end surface, and improving the reliability of the compressor.
The application also discloses some embodiments, the peripheral wall of the eccentric part 11 is provided with a projection 111; the upper surface of the protrusion 111 forms a support surface 112.
The application also discloses embodiments, the roller 3 has an inner bore; the eccentric part 11 is positioned in the inner hole; the inner hole comprises a first section and a second section which are sequentially arranged from top to bottom; the first section is matched with the eccentric part 11; the second section is matched with the bulge 111; i.e. the protrusion 111 is located in the second section.
3-4, the present application further discloses embodiments wherein the eccentric portion 11 has an outer diameter D1; the protrusion 111 is an annular protrusion 111; an annular projection 111 is provided circumferentially around the outer peripheral wall of the eccentric portion 11; the outer diameter of the annular protrusion 111 is D2; the aperture of the first section is D3; the aperture of the second section is D4; wherein D2> D1; d4> D3; D4-D2 ≠ D3-D1; d2> D1 and D4> D3, the roller 3 can be supported on the eccentric portion 11 of the crankshaft 1. D4-D2 ≠ D3-D1 can eliminate the matching of all the inner surfaces of the rollers 3 with the eccentric part 11 of the crankshaft 1, and can reduce the processing difficulty.
The first section and the second section are connected through a connecting surface 31; the connection face 31 forms a connection portion; the connection surface 31 is disposed on the support surface 112; and the connection surface 31 is attached to the support surface 112. That is, the inner peripheral wall of the roller 3 is provided with the connecting surface 31, and the outer circumference of the eccentric portion 11 of the crankshaft is also provided with the support surface 112. The roller 3 is supported on the eccentric portion 11 of the crankshaft 1 by the engagement of the connecting surface 31 and the support surface 112.
The application also discloses some embodiments, in the central axis direction of the inner hole, the height of the roller 3 is h 7; the height of the second section is h 6; when D4-D2> D3-D1, h6> h 7/2; at the moment, only the inner surface of the upper half part, namely the first section, of the roller 3 is matched with the eccentric part 11 of the crankshaft 1, and h6 is greater than h7/2, so that the structural reliability can be ensured;
when D4-D2< D3-D1, h6< h7/2, only the lower half part of the roller 3, namely the inner surface of the second section, is matched with the eccentric part 11 of the crankshaft 1, and the structural reliability can be ensured by h6< h 7/2. And by controlling the difference between h6 and h4, the direct contact between the end surface of the roller 3 and the end surface of the flange can be avoided, so that the risk of the reliability problem of the compressor caused by the abrasion between the roller 3 and the flange is reduced. The gap between the lower end surface of the roller 3 and the end surface of the lower flange can be controlled, so that the leakage between the air suction and exhaust cavities caused by the gap between the end surface of the roller 3 and the end surface of the flange is controlled, and the efficiency of the compressor is tested.
The present application also discloses embodiments in which a third gap is provided between the protrusion 111 and the end of the flange; the third gap has a width h 5.
The peripheral wall of the protrusion 111 is connected with the upper surface of the protrusion 111 through a chamfer, so that the assembly of the crankshaft 1 and the roller 3 is facilitated.
According to the embodiment of the application, a compressor is provided, and the compressor comprises a pump body assembly which is the pump body assembly.
According to an embodiment of the application, an air conditioner is provided, which comprises a compressor, wherein the compressor is the compressor.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (9)

1. A pump body assembly, comprising:
the crankshaft (1), the said crankshaft (1) has eccentric parts (11);
a flange mounted on the crankshaft (1);
and a roller (3); the roller (3) is mounted on the eccentric part (11); and a gap is arranged between the end part of the flange and the end surface of the roller (3);
a supporting surface (112) is arranged on the eccentric part (11); the roller (3) is provided with a connecting part; the connecting part is arranged on the supporting surface (112); a bulge (111) is arranged on the outer peripheral wall of the eccentric part (11); the upper surface of the projection (111) forms the support surface (112); the roller (3) has an inner bore; the eccentric part (11) is positioned in the inner hole; the inner hole comprises a first section and a second section which are sequentially arranged from top to bottom; the first section is adapted to the eccentric portion (11); the second section is adapted to the protrusion (111).
2. The pump block assembly according to claim 1, characterized in that it further comprises a cylinder (4); the height of the roller (3) is smaller than the height of the cylinder (4) in the central axis direction of the crankshaft (1).
3. The pump body assembly according to claim 1, characterized in that said flange comprises a first flange (21); the gap comprises a first gap; the first gap is provided between an end of the first flange (21) and a first end face of the roller (3);
and/or the flange comprises a second flange (22); the gap comprises a second gap; the second gap is arranged between an end of the second flange (22) and a second end face of the roller (3).
4. The pump body assembly of claim 3, wherein the first gap has a width h 1; the width of the second gap is h 2; wherein h1= h 2.
5. The pump body assembly according to claim 1, characterized in that the eccentric portion (11) has an outer diameter D1; the bulge (111) is an annular bulge (111); the annular projection (111) is circumferentially arranged around the outer peripheral wall of the eccentric portion (11); the outer diameter of the annular projection (111) is D2; the aperture of the first section is D3; the aperture of the second section is D4; wherein D2> D1; and/or, D4> D3; and/or, D4-D2 ≠ D3-D1;
and/or the first section and the second section are connected through a connecting surface (31); the connection face (31) forms the connection portion; the connecting surface (31) is arranged on the supporting surface (112); and the connecting surface (31) is attached to the supporting surface (112).
6. The pump body assembly according to claim 5, characterized in that the roller (3) has a height h7 in the direction of the central axis of the bore; the height of the second section is h 6; when D4-D2> D3-D1, h6> h 7/2;
and/or, when D4-D2< D3-D1, h6< h 7/2.
7. The pump body assembly according to claim 1, characterized in that a third clearance is provided between said projection (111) and the end of said flange;
and/or the peripheral wall of the bulge (111) is connected with the upper surface of the bulge (111) through a chamfer.
8. A compressor comprising a pump block assembly, characterized in that it is a pump block assembly according to any one of claims 1 to 7.
9. An air conditioner comprising a compressor, wherein the compressor is the compressor of claim 8.
CN202011409868.9A 2020-12-03 2020-12-03 Pump body assembly, compressor and air conditioner with same Active CN112576502B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011409868.9A CN112576502B (en) 2020-12-03 2020-12-03 Pump body assembly, compressor and air conditioner with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011409868.9A CN112576502B (en) 2020-12-03 2020-12-03 Pump body assembly, compressor and air conditioner with same

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Publication Number Publication Date
CN112576502A CN112576502A (en) 2021-03-30
CN112576502B true CN112576502B (en) 2022-05-17

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007085208A (en) * 2005-09-21 2007-04-05 Mitsubishi Electric Corp Rotary compressor
JP2008298037A (en) * 2007-06-04 2008-12-11 Hitachi Appliances Inc Vertical type rotary compressor
CN102619755A (en) * 2011-01-27 2012-08-01 东芝开利株式会社 Compressor and refrigerating cycle apparatus
CN104110380A (en) * 2014-07-23 2014-10-22 珠海凌达压缩机有限公司 Compressor and roller structure thereof
JP2019190287A (en) * 2018-04-19 2019-10-31 ダイキン工業株式会社 Compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007085208A (en) * 2005-09-21 2007-04-05 Mitsubishi Electric Corp Rotary compressor
JP2008298037A (en) * 2007-06-04 2008-12-11 Hitachi Appliances Inc Vertical type rotary compressor
CN102619755A (en) * 2011-01-27 2012-08-01 东芝开利株式会社 Compressor and refrigerating cycle apparatus
CN104110380A (en) * 2014-07-23 2014-10-22 珠海凌达压缩机有限公司 Compressor and roller structure thereof
JP2019190287A (en) * 2018-04-19 2019-10-31 ダイキン工業株式会社 Compressor

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