CN108223374B - Pump body assembly, fluid machinery and heat exchange equipment - Google Patents

Pump body assembly, fluid machinery and heat exchange equipment Download PDF

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Publication number
CN108223374B
CN108223374B CN201810001926.0A CN201810001926A CN108223374B CN 108223374 B CN108223374 B CN 108223374B CN 201810001926 A CN201810001926 A CN 201810001926A CN 108223374 B CN108223374 B CN 108223374B
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CN
China
Prior art keywords
rotor
pump body
contact portion
body assembly
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810001926.0A
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Chinese (zh)
Other versions
CN108223374A (en
Inventor
刘靖
魏会军
朱红伟
王大号
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
Original Assignee
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Gree Green Refrigeration Technology Center Co Ltd of Zhuhai filed Critical Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority to CN201810001926.0A priority Critical patent/CN108223374B/en
Publication of CN108223374A publication Critical patent/CN108223374A/en
Application granted granted Critical
Publication of CN108223374B publication Critical patent/CN108223374B/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
    • F04C18/3562—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 the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • 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
    • F04C29/06—Silencing
    • 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
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/80—Other components

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention provides a pump body assembly, a fluid machine and heat exchange equipment. Wherein, pump body subassembly includes: the cylinder is provided with an inner cavity and a sliding vane groove communicated with the inner cavity; the vibration reduction structure comprises a contact part, wherein the contact part is slidably arranged on the cylinder; the rotor is rotatably arranged in the inner cavity and can be contacted with the contact part; the sliding vane is slidably arranged in the sliding vane groove, the head of the sliding vane is contacted with the peripheral surface of the rotor, a preset included angle A is formed between a first connecting line between the sliding vane and the center of the cylinder and a second connecting line between the contact part and the center of the cylinder along the rotation direction of the rotor, and the preset included angle A is more than or equal to 90 degrees and less than or equal to 180 degrees. The invention effectively solves the problems of large vibration and noise of the pump body component in the prior art.

Description

Pump body assembly, fluid machinery and heat exchange equipment
Technical Field
The invention relates to the technical field of pump bodies, in particular to a pump body assembly, fluid machinery and heat exchange equipment.
Background
The single rotor type rolling rotor compressor is widely applied to the field of household air conditioners. However, since the single-rotor rolling rotor compressor has only one working chamber, the peak value of the resistance moment born by the rotor is far greater than that born by the rotor in the double-rotor compressor, so that the fluctuation of the resistance moment born by the rotor is larger, the torque fluctuation is a vibration source of the compressor, and further the gas force fluctuation of the single-rotor compressor is larger, and the noise and vibration of the single-rotor compressor are larger.
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 of large vibration and noise of the pump body assembly in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a pump body assembly comprising: the cylinder is provided with an inner cavity and a sliding vane groove communicated with the inner cavity; the vibration reduction structure comprises a contact part, wherein the contact part is slidably arranged on the cylinder; the rotor is rotatably arranged in the inner cavity and can be contacted with the contact part; the sliding vane is slidably arranged in the sliding vane groove, the head of the sliding vane is contacted with the peripheral surface of the rotor, a preset included angle A is formed between a first connecting line between the sliding vane and the center of the cylinder and a second connecting line between the contact part and the center of the cylinder along the rotation direction of the rotor, and the preset included angle A is more than or equal to 90 degrees and less than or equal to 180 degrees.
Further, the predetermined angle a is 120 ° or more and 180 ° or less.
Further, the predetermined angle a is 180 °.
Further, the contact portion applies resistance to the rotor during movement of the rotor from the position of the slide toward the contact portion, and applies urging force to the rotor during movement of the rotor from the position of the contact portion toward the slide.
Further, the cylinder has a connecting groove communicating with the inner cavity, and the contact portion is slidably disposed in the connecting groove.
Further, the connection groove extends in the radial direction of the cylinder.
Further, when the length of the sliding vane extending into the inner cavity is maximum, a preset gap is formed between one end of the contact part far away from the rotor and one end of the connecting groove far away from the rotor.
Further, the contact portion has a through-flow hole, and after the contact portion extends into the cylinder, the two chambers located on both sides of the contact portion in the cylinder are communicated by the through-flow hole.
Further, the contact part is of a plate-shaped structure, and a notch is cut at one side edge of the plate-shaped structure to form a through-flow hole.
Further, the vibration damping structure further includes: and the reset piece is arranged at one end of the contact part far away from the rotor and provides a reset force for the contact part to move towards one side of the rotor.
According to another aspect of the present invention, there is provided a fluid machine comprising the pump body assembly described above.
According to another aspect of the present invention there is provided a heat exchange device comprising a fluid machine as described above.
By applying the technical scheme of the invention, the pump body assembly comprises a cylinder, a vibration reduction structure, a rotor and a sliding sheet. The cylinder is provided with an inner cavity and a sliding vane groove communicated with the inner cavity. The vibration damping structure includes a contact portion slidably disposed on the cylinder. The rotor is rotatably disposed in the cavity and is capable of contacting the contact portion. The sliding vane is slidably arranged in the sliding vane groove, the head of the sliding vane is contacted with the peripheral surface of the rotor, a preset included angle A is formed between a first connecting line between the sliding vane and the center of the cylinder and a second connecting line between the contact part and the center of the cylinder along the rotation direction of the rotor, and the preset included angle A is more than or equal to 90 degrees and less than or equal to 180 degrees. In this way, in the operation process of the pump body assembly, the contact part can be in contact with the outer peripheral surface of the rotor, so that a resisting moment can be generated on the rotor, and the resisting moment born by the rotor is increased; the rotor can be assisted to be pushed to rotate, the resistance moment borne by the rotor is reduced, fluctuation of the resistance moment borne by the rotor is further reduced, gas fluctuation in the pump body assembly is weakened, and vibration and noise of the pump body assembly are reduced.
At the time of starting the pump body assembly, the resistance moment applied to the rotor is minimum, and the rotor can receive the resistance moment applied thereto by the contact portion. Compared with the stress condition of the rotor when the pump body assembly is just started in the prior art, the resistance moment of the rotor is increased. Then, in the normal operation process of the pump body assembly, the pressure difference in the chambers at two sides of the sliding vane is gradually increased, the resistance moment born by the rotor is gradually increased, and at the moment, the contact part assists in pushing the rotor to rotate, so that the resistance moment born by the rotor is reduced, and the fluctuation range of the resistance moment born by the rotor is smaller. Therefore, in the whole operation period of the pump body assembly, the pump body assembly can increase the minimum resistance moment born by the rotor, reduce the maximum resistance moment born by the rotor, achieve the purposes of balancing and weakening the fluctuation of the resistance moment, further reduce the vibration and noise generated by the pump body assembly in the operation process, improve the working efficiency and the working performance of the pump body assembly, and improve the use experience of users.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a cross-sectional view of a rotor at 0 of an embodiment one of a pump body assembly according to the present invention;
FIG. 2 shows a cross-sectional view of the rotor of the pump body assembly of FIG. 1 at 180;
FIG. 3 shows a top view of the contact of FIG. 1; and
Fig. 4 shows a side view of the contact in fig. 1.
Wherein the above figures include the following reference numerals:
10. a cylinder; 11. an inner cavity; 12. a slide groove; 13. a connecting groove; 14. a buffer compression chamber; 20. a rotor; 30. a sliding sheet; 41. a contact portion; 411. a through-flow hole; 50. and (3) a crankshaft.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
In the present invention, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used generally with respect to the orientation shown in the drawings or to the vertical, vertical or gravitational orientation; also, for ease of understanding and description, "left, right" is generally directed to the left, right as shown in the drawings; "inner and outer" refer to inner and outer relative to the outline of the components themselves, but the above-described orientation terms are not intended to limit the present invention.
The application provides a pump body assembly, a fluid machine and heat exchange equipment, and aims to solve the problem that the pump body assembly is large in vibration and noise in the prior art.
Example 1
As shown in fig. 1 and 2, the pump body assembly includes a cylinder 10, a vibration damping structure, a rotor 20, and a slide 30. The cylinder 10 has an inner cavity 11 and a slide groove 12 communicating with the inner cavity 11. The vibration damping structure includes a contact portion 41, and the contact portion 41 is slidably provided on the cylinder 10. The rotor 20 is rotatably disposed in the inner chamber 11, and the rotor 20 can be brought into contact with the contact portion 41. The vane 30 is slidably disposed in the vane groove 12, the head of the vane 30 contacts the outer circumferential surface of the rotor 20, and a predetermined angle a is formed between a first line between the vane 30 and the center of the cylinder 10 and a second line between the contact portion 41 and the center of the cylinder 10 in the rotation direction of the rotor 20, and the predetermined angle a is 90 ° or more and 180 ° or less.
By applying the technical scheme of the embodiment, during the operation of the pump body assembly, the contact part 41 can be in contact with the outer peripheral surface of the rotor 20, so that a resisting moment can be generated on the rotor 20, and the resisting moment borne by the rotor 20 is increased; the rotor 20 can be assisted to be pushed to rotate, the resistance moment borne by the rotor 20 is reduced, fluctuation of the resistance moment borne by the rotor 20 is further reduced, gas fluctuation in the pump body assembly is weakened, and vibration and noise of the pump body assembly are reduced.
At the time of starting the pump body assembly, the resistance moment to which the rotor 20 is subjected is minimum, and the rotor 20 can receive the resistance moment applied thereto by the contact portion 41. The rotor 20 in this embodiment is subject to an increased moment of resistance as compared to the force applied to the rotor during the start-up of the pump assembly of the prior art. Then, during normal operation of the pump body assembly, the pressure difference in the chambers at both sides of the slide vane 30 is gradually increased, and the resistance moment received by the rotor 20 is gradually increased, and at this time, the contact portion 41 assists in pushing the rotor 20 to rotate, so that the resistance moment received by the rotor 20 is reduced, and further, the fluctuation range of the resistance moment received by the rotor 20 is smaller. Thus, in the whole operation period of the pump body assembly, the pump body assembly in the embodiment can increase the minimum resistance moment born by the rotor 20, reduce the maximum resistance moment born by the rotor 20, achieve the purposes of balancing and weakening the fluctuation of the resistance moment, further reduce the vibration and noise generated by the pump body assembly in the operation process, improve the working efficiency and the working performance of the pump body assembly, and improve the use experience of users.
Optionally, the predetermined angle a is 120 ° or more and 180 ° or less. In this way, the predetermined included angle a ensures that the vibration damping structure can increase the minimum resistance moment of the rotor 20 within the above numerical range, reduce the maximum resistance moment of the rotor 20, and achieve the purposes of balancing and weakening the fluctuation of the resistance moment.
As shown in fig. 1 and 2, the predetermined angle a is 180 °. In this way, the line connecting the slide 30 and the contact portion 41 passes through the center of the cylinder 10, thereby making the mounting or dismounting of the contact portion 41 easier.
Specifically, as shown in fig. 1 and 2, the rotor 20 is defined to be located at 0 ° in the illustration, the rotor 20 rotates anticlockwise, the position (trough position) of the minimum resistance moment to which the rotor 20 is subjected is in the range of 0 ° to 30 °, the position (peak position) of the maximum resistance moment is different according to the working conditions of the pump body assembly, and is generally in the range of 200 ° to 300 °, the working chamber in the cylinder 10 is in the compression process of the pump body assembly in the range of 30 ° to 210 °, and the predetermined included angle a is set to 180 °. In this way, at the time of starting the pump body assembly or at the initial stage of compression of the cylinder 10 (in the range of 0 ° to 30 °), the contact portion 41 can rub against the rotor 20, preventing the rotor 20 from rotating, so that the rotor 20 receives a resistance moment applied thereto by the contact portion 41, and further the minimum resistance moment received by the rotor 20 is increased; in the later compression stage (180-360 DEG range) of the cylinder 10, the contact part 41 plays a role in assisting in pushing the rotor 20 to rotate, so that the maximum resistance moment borne by the rotor 20 is reduced, the trough of the resistance moment borne by the rotor 20 is increased, the crest of the resistance moment is reduced, the purposes of balancing and weakening the fluctuation of the resistance moment are achieved, and the vibration of the pump body assembly is reduced.
In the present embodiment, the contact portion 41 applies resistance to the rotor 20 during the movement of the rotor 20 from the position of the vane 30 toward the contact portion 41, and the contact portion 41 applies pushing force to the rotor 20 during the movement of the rotor 20 from the position of the contact portion 41 toward the vane 30. Like this, at the pump body subassembly operation in-process, above-mentioned setting can play balance, weaken the undulant purpose of moment of resistance, has reduced the undulant gas force of pump body subassembly, and then reduces the vibration and the noise of pump body subassembly, improves user's use and experiences.
As shown in fig. 1 and 2, the cylinder 10 has a connection groove 13 communicating with the inner chamber 11, and the contact portion 41 is slidably provided in the connection groove 13. Like this, contact 41 sets up in spread groove 13, and contact 41 slides along spread groove 13, and then makes the motion of contact 41 simpler, and then makes the internal structure of pump body subassembly simple, reduces staff's processing, assembly strength, shortens assembly and processing consuming time.
As shown in fig. 1 and 2, the connecting groove 13 extends in the radial direction of the cylinder 10. Specifically, in the initial state (where the rotor 20 is in the range of 0 to 30 °), the contact portion 41 can be in contact with the outer circumferential surface of the rotor 20, and the buffer compression chamber 14 is provided between the contact portion 41 and the end of the connection groove 13 away from the rotor 20, and the gas in the buffer compression chamber 14 is gradually compressed during the rotation of the rotor 20. As shown in fig. 2, when the rotor 20 rotates to 180 °, the pressure of the gas in the buffer compression chamber 14 is maximized. After that, when the rotor 20 continues to rotate, the compressed gas pushes the contact portion 41 to slide toward the rotor 20, so that the contact portion 41 is ensured to be always in contact with the outer peripheral surface of the rotor 20, and the contact portion 41 is ensured to play a role of balancing and weakening the fluctuation of the resistance moment of the rotor 20.
In this embodiment, the contact portion 41 and the buffer compression chamber 14 that reciprocate are disposed on the cylinder 10 to increase the resistance moment of the rotor 20 at the initial stage of the compression process of the pump body assembly, and provide power at the final stage of compression to relieve the peak value of the resistance moment of the rotor 20, thereby reducing the vibration of the pump body assembly to a certain extent and widening the application range of the pump body assembly. Specifically, the contact portion 41 is movable together with the rotor 20, and when the initial resistance moment of compression is small, the buffer compression chamber 14 is able to generate the resistance moment to the rotor 20 through the contact portion 41; at the end of compression, the gas in the buffer compression chamber 14 expands to generate thrust action on the rotor 20, so that the resistance moment at the end of compression is reduced, a complementary mechanism is formed for the original moment of the pump body assembly, the fluctuation of the resistance moment of the rotor 20 is reduced to a certain extent, and the vibration of the pump body assembly is reduced.
As shown in fig. 1, when the length of the slide 30 extending into the inner cavity 11 is maximized, a predetermined gap is provided between the end of the contact portion 41 remote from the rotor 20 and the end of the connection groove 13 remote from the rotor 20. Specifically, when the length of the slider 30 extending into the inner cavity 11 is maximum, the length of the contact portion 41 extending into the inner cavity 11 is minimum. In this way, the above arrangement ensures that the contact portion 41 does not interfere with the end of the connecting groove 13 remote from the rotor 20 when the length of the contact portion 41 extending into the cavity 11 is minimized, so that the contact portion 41 operates normally. Meanwhile, at the position where the contact portion 41 extends into the inner cavity 11 to the minimum length, the contact portion 41 can slide out of the connecting groove 13 after being subjected to the gas pressure in the buffer compression cavity 14, so that the moment for promoting the rotation of the rotor 20 is provided for the rotor 20, and the maximum resistance moment of the rotor 20 is reduced.
As shown in fig. 3 and 4, the contact portion 41 has a through-flow hole 411, and after the contact portion 41 is inserted into the cylinder 10, the through-flow hole 411 communicates two chambers located on both sides of the contact portion 41 in the cylinder 10. In this way, during the operation of the pump body assembly, the inner cavity 11 is divided into two subchambers only under the action of the slide sheet 30, so that the contact part 41 is prevented from affecting the normal compression working process in the cylinder 10. The structure is simple and easy to process and realize.
As shown in fig. 3 and 4, the contact portion 41 is a plate-like structure, and a notch is cut at one side edge of the plate-like structure to form the through-flow hole 411. The plate-like structure is inserted into the connecting groove 13 and is slidable in the radial direction of the cylinder 10 in the connecting groove 13 along with the rotor 20. After the contact portion 41 extends into the inner cavity 11, the chambers on both sides thereof are communicated through the through-flow holes 411, so as to prevent the contact portion 41 from affecting the suction, compression and exhaust actions of the cylinder 10. In this way, the through-hole 411 formed by the removal method makes the structure of the contact portion 41 simpler and easy to process.
In this embodiment, the pump body assembly further includes a crankshaft 50, and the rotor 20 is sleeved on an eccentric portion of the crankshaft 50 and rotates together with the crankshaft 50. Wherein, the rotor 20 eccentrically rotates under the drive of the crankshaft 50, the slide vane 30 divides the working chamber formed by the rotor 20 and the cylinder 10 into a high pressure chamber and a low pressure chamber, and the resistive moment of the rotor 20 (crankshaft 50) is formed under the combined action of pressure difference, friction force, slide vane force and the like, wherein the gas force formed by the pressure difference is the main part of the resistive moment of the rotor 20 (crankshaft 50). Thus, at the initial stage of compression of the pump body assembly: when the rotor 20 rotates, the contact part 41 can rub against the rotor 20 to prevent the rotor 20 from rotating, so that the rotor 20 receives a resisting moment applied to the contact part 41, and the minimum resisting moment received by the rotor 20 is further increased; in the later stage of compression of the pump body assembly, the pressure on the high pressure side gradually forms along with the reduction of the working volume, and the pressure difference and the resistance moment formed by the pressure difference always increase along with the rotation of the rotor 20, so that the contact part 41 provides driving force for the rotor 20, further the resistance moment at the final stage of compression is reduced, the peak value of the resistance moment is reduced, further the fluctuation of the resistance moment is reduced, and the vibration and noise of the pump body assembly are reduced.
In this embodiment, the pump body assembly operates as follows: during the rotation of the crankshaft 50 from the slide 30 to the contact portion 41, a high-low pressure working chamber is gradually formed in the working chamber, and the pressure in the high-pressure chamber is gradually increased. At the same time, the buffer compression chamber 14 is compressed by the reciprocating motion of the contact portion 41, increasing the resistance moment of the rotor 20 (crankshaft 50); during rotation of the crankshaft 50 from the contact portion 41 to the slide 30, the high-pressure chamber pressure in the working chamber continues to rise to the exhaust pressure, and the resistance moment to which the rotor 20 (the crankshaft 50) is subjected reaches a peak. At the same time, the gas in the buffer compression chamber 14 starts to expand and push the contact portion 41 to reciprocate, thereby generating a pushing force to the rotor 20 (crankshaft 50) and reducing a peak of a moment of resistance of the rotor 20 (crankshaft 50).
The application also provides a fluid machine (not shown) comprising a pump body assembly as described above. Alternatively, the fluid machine is a compressor.
The application also provides a heat exchange device (not shown) comprising a fluid machine as described above. Optionally, the heat exchange device is an air conditioner. Therefore, the pump body assembly in the embodiment can prevent the stress strain of the pipeline inside the air conditioner from being abnormal, and the working reliability of the air conditioner is improved.
Example two
The pump body assembly in the second embodiment is different from the first embodiment in that: the vibration damping structure is different.
In this embodiment, the vibration damping structure further includes a restoring member. The reset piece is arranged at one end of the contact part far away from the rotor, and provides reset force for the contact part to move towards one side of the rotor. In this way, when the rotor is in the range of 0 to 30 ° (the trough position), the restoring member provides the restoring force to the contact portion so that the contact portion is in close contact with the outer peripheral surface of the rotor, friction is generated between the contact portion and the rotor, and the resistance moment to which the rotor is subjected is increased. After the rotor rotates by 30 degrees, the gas in the inner cavity starts to be compressed, the resistance moment born by the rotor is gradually increased, and the contact part continuously compresses the reset piece. When the rotor rotates to 180 degrees, the length of the contact part extending into the connecting groove is maximum, and the restoring force generated on the restoring piece is maximum. After that, the rotor continues to rotate, so that the cylinder 10 is in the later stage of compression, the reset piece applies a reset force to the contact part, which moves towards one side of the rotor, so that the contact part can be in contact with the outer peripheral surface of the rotor, the contact part is ensured to assist in pushing the rotor to rotate, and the maximum resistance moment born by the rotor is further reduced, so that the trough of the resistance moment born by the rotor is raised, the crest of the resistance moment is reduced, the purposes of balancing and weakening the fluctuation of the resistance moment are achieved, and the vibration of the pump body assembly is reduced.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
In the operation process of the pump body assembly, the contact part is always in contact with the outer peripheral surface of the rotor, so that a resisting moment can be generated on the rotor, and the resisting moment born by the rotor is increased; the rotor can be assisted to be pushed to rotate, the resistance moment borne by the rotor is reduced, fluctuation of the resistance moment borne by the rotor is further reduced, gas fluctuation in the pump body assembly is weakened, and vibration and noise of the pump body assembly are reduced.
The rotor receives the minimum moment of resistance when the pump body assembly just starts, and the moment of resistance that the contact portion applyed to it is received to the rotor this moment. Compared with the stress condition of the rotor when the pump body assembly is just started in the prior art, the resistance moment of the rotor is increased. Then, in the normal operation process of the pump body assembly, the pressure difference in the chambers at two sides of the sliding vane is gradually increased, the resistance moment born by the rotor is gradually increased, and at the moment, the contact part assists in pushing the rotor to rotate, so that the resistance moment born by the rotor is reduced, and the fluctuation range of the resistance moment born by the rotor is smaller. Therefore, in the whole operation period of the pump body assembly, the pump body assembly can increase the minimum resistance moment born by the rotor, reduce the maximum resistance moment born by the rotor, achieve the purposes of balancing and weakening the fluctuation of the resistance moment, further reduce the vibration and noise generated by the pump body assembly in the operation process, improve the working efficiency and the working performance of the pump body assembly, and improve the use experience of users.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A pump body assembly, comprising:
A cylinder (10) having an inner cavity (11) and a slide groove (12) communicating with the inner cavity (11);
Damping structure comprising a contact portion (41), said contact portion (41) being slidably arranged on said cylinder (10);
-a rotor (20), the rotor (20) being rotatably arranged in the inner cavity (11), and the rotor (20) being contactable with the contact portion (41);
A sliding vane (30) slidably disposed in the sliding vane groove (12), wherein the head of the sliding vane (30) is in contact with the outer circumferential surface of the rotor (20), a predetermined angle A is formed between a first connecting line between the sliding vane (30) and the center of the cylinder (10) and a second connecting line between the contact portion (41) and the center of the cylinder (10) along the rotation direction of the rotor (20), and the predetermined angle A is 90 DEG or more and 180 DEG or less;
-the contact portion (41) applies a resistance to the rotor (20) during movement of the rotor (20) from the position of the slide (30) towards the contact portion (41), the contact portion (41) applying a pushing force to the rotor (20) during movement of the rotor (20) from the position of the contact portion (41) towards the slide (30);
the contact part (41) is provided with a through hole (411), and after the contact part (41) stretches into the cylinder (10), the through hole (411) is used for communicating two chambers in the cylinder (10) located on two sides of the contact part (41).
2. Pump body assembly according to claim 1, wherein the predetermined angle a is 120 ° or more and 180 ° or less.
3. Pump body assembly according to claim 1 or 2, wherein the predetermined angle a is 180 °.
4. Pump body assembly according to claim 1, characterized in that the cylinder (10) has a connecting groove (13) communicating with the inner cavity (11), the contact portion (41) being slidably arranged in the connecting groove (13).
5. Pump body assembly according to claim 4, characterized in that the connecting groove (13) extends in the radial direction of the cylinder (10).
6. Pump body assembly according to claim 4, characterized in that the contact portion (41) has a predetermined gap between the end remote from the rotor (20) and the end remote from the rotor (20) of the connecting groove (13) when the length of the slide (30) extending into the inner cavity (11) is maximum.
7. Pump body assembly according to claim 1, characterized in that the contact portion (41) is a plate-like structure, which is notched at one side edge to form the through-flow hole (411).
8. The pump body assembly of claim 1, wherein the vibration reduction structure further comprises:
And a restoring member provided at an end of the contact portion (41) away from the rotor (20), the restoring member providing a restoring force to the contact portion (41) to move toward the rotor (20).
9. A fluid machine comprising a pump body assembly according to any one of claims 1 to 8.
10. A heat exchange device comprising the fluid machine of claim 9.
CN201810001926.0A 2018-01-02 2018-01-02 Pump body assembly, fluid machinery and heat exchange equipment Active CN108223374B (en)

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CN105927537A (en) * 2016-06-22 2016-09-07 珠海格力节能环保制冷技术研究中心有限公司 Pump body assembly and compressor with same
CN107120280A (en) * 2017-07-12 2017-09-01 张均 Compression set and compressor
CN207974959U (en) * 2018-01-02 2018-10-16 珠海格力节能环保制冷技术研究中心有限公司 Pump assembly, fluid machinery and heat transmission equipment

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