CN113446222B - Air conditioner compressor - Google Patents

Air conditioner compressor Download PDF

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Publication number
CN113446222B
CN113446222B CN202110907966.3A CN202110907966A CN113446222B CN 113446222 B CN113446222 B CN 113446222B CN 202110907966 A CN202110907966 A CN 202110907966A CN 113446222 B CN113446222 B CN 113446222B
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CN
China
Prior art keywords
rotor
pressure release
sliding
driving shaft
shell
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Application number
CN202110907966.3A
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Chinese (zh)
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CN113446222A (en
Inventor
张海霞
李勇
赵红光
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Shenzhen Zhongxiangrun Industrial Co ltd
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Shenzhen Zhongxiangrun Industrial Co ltd
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Priority to CN202110907966.3A priority Critical patent/CN113446222B/en
Publication of CN113446222A publication Critical patent/CN113446222A/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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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

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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 belongs to the technical field of compressors. The invention discloses an air conditioner compressor, which comprises a shell, a rotor, a driving shaft, a sliding vane and a rotor elastic piece, wherein the rotor is arranged on the shell; the inside of the shell is provided with a working cavity, the rotor is positioned in the working cavity in an eccentric mode, and the driving shaft is connected with the rotor and drives the rotor to rotate in the working cavity; one end of the sliding vane is in sliding connection with the shell, and the other end of the sliding vane extends into the working cavity and is in sliding contact with the outer surface of the rotor; the rotor is in sliding connection with the driving shaft and can reciprocate relative to the driving shaft along the radial direction of the driving shaft; the rotor elastic piece is arranged between the driving shaft and the rotor along the radial direction of the rotor so as to drive the rotor to keep sliding contact with the inner surface of the working cavity; the shell is provided with an air inlet and an air outlet, the rotor and the sliding sheets divide the working cavity into an air suction cavity and an air outlet cavity, the air inlet is communicated with the air suction cavity, and the air outlet is communicated with the air outlet cavity. The air conditioner compressor can automatically compensate the abrasion of the rotor, and continuous and stable work is realized.

Description

Air conditioner compressor
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to an air conditioner compressor.
Background
The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and mainly used for compressing and conveying refrigerant, is a heart of a refrigerating system, and is widely applied to the field of air conditioning equipment.
However, the existing compressors often suffer from the following problems when in use:
1. the rotor of the compressor can be worn due to long-time work, so that a gap is formed between the rotor and the shell, and the mechanical efficiency and the working effect of the compressor are affected;
2. when the exhaust passage of the existing compressor is blocked, the internal pressure of the compressor can be rapidly increased, the motor can be possibly burnt, and the shell can be broken or exploded to cause personal safety problem or property loss.
Disclosure of Invention
In order to solve the problems existing in the prior compressor in the use process, the invention provides an air conditioner compressor. The air conditioner compressor comprises a shell, a rotor, a driving shaft, a sliding vane and a rotor elastic piece; the rotor is positioned in the working cavity in an eccentric mode, and the driving shaft is connected with the rotor and can drive the rotor to rotate in the working cavity; one end of the sliding sheet is in sliding connection with the shell, and the other end of the sliding sheet extends into the working cavity and is in sliding contact with the outer surface of the rotor; the rotor is slidably connected with the driving shaft, and can reciprocate relative to the driving shaft along the radial direction of the driving shaft; the rotor elastic piece is arranged between the driving shaft and the rotor along the radial direction of the rotor so as to drive the rotor to keep sliding contact with the inner surface of the working cavity; the shell is provided with an air inlet and an air outlet, the rotor and the sliding sheets divide the working cavity into an air suction cavity and an air outlet cavity which are mutually independent, the air inlet is communicated with the air suction cavity, and the air outlet is communicated with the air outlet cavity.
Preferably, the air conditioner compressor is also provided with a pressure maintaining channel; one end of the pressure maintaining channel is communicated with the air outlet, and the other end of the pressure maintaining channel extends to the containing cavity where the rotor elastic piece is located, so that the rotor elastic piece is assisted to drive the rotor to keep at a position in sliding contact with the inner surface of the working cavity.
Further preferably, the pressure maintaining channel comprises a first channel, a second channel and an annular channel; the annular channel is arranged on the outer circumferential surface of the driving shaft, one end of the first channel is communicated with the air outlet, the other end of the first channel is communicated with the annular channel, one end of the second channel is communicated with the annular channel, and the other end of the second channel is communicated with the containing cavity where the rotor elastic piece is located.
Preferably, a section of shaft block in a cuboid structure is arranged on the driving shaft, a rectangular hole along the radial direction of the rotor is arranged in the rotor, and the rectangular hole penetrates along the axial direction of the rotor; the drive shaft passes through the oblong hole, and the shaft block and the oblong hole form a sliding connection along the radial direction of the rotor.
Preferably, the air conditioner compressor is provided with at least two sliding sheets; the sliding sheets are positioned between the air inlet and the air outlet and respectively keep sliding contact with the outer surface of the rotor.
Further preferably, the air conditioner compressor is further provided with a sliding vane elastic piece; the slide elastic piece is positioned between the shell and the slide to drive the slide to move relative to the shell and keep contact with the outer surface of the rotor.
Preferably, the air conditioner compressor is further provided with a pressure release assembly; the pressure release assembly is connected with the sliding vane and can drive the sliding vane to move out of contact with the outer surface of the rotor according to pressure change of the air outlet.
Further preferably, the pressure release assembly comprises a sliding block, a sliding groove is arranged on the shell, and a protrusion is arranged on the sliding block; the sliding groove is formed in the direction that the sliding piece moves back and forth relative to the shell, the protrusion extends into the sliding groove, the sliding block is located in the sliding groove and can move back and forth along the sliding groove, and the protrusion drives the sliding piece to overcome the sliding piece elastic piece to move relative to the shell.
Further preferably, the pressure release assembly includes a pressure release passage, a pressure release piston, a pressure release elastic member, a pressure release control panel, a pressure release link, and a pressure release pendulum; the pressure release piston is in sliding connection with the driving shaft and can reciprocate along the radial direction of the driving shaft; the pressure release elastic piece is positioned between the pressure release piston and the driving shaft to drive the pressure release piston to extend out of the driving shaft; one end of the pressure release channel is communicated with the air outlet, and the other end of the pressure release channel extends between the pressure release piston and the driving shaft so as to drive the pressure release piston to move against the pressure release elastic piece; the pressure release control disc is sleeved on the driving shaft in a sliding manner along the axial direction of the driving shaft, and a positioning groove is formed in the pressure release control disc; one end of the pressure release connecting rod is connected with the pressure release control panel in a sliding way, and the other end of the pressure release connecting rod is connected with the sliding block so as to drive the sliding block to reciprocate along the sliding groove; the end part of the pressure release pendulum is movably connected with the driving shaft, and the middle position of the pressure release pendulum is movably connected with the control panel so as to drive the control panel to reciprocate along the axial direction of the driving shaft; the pressure release piston is selectively connectable with the positioning groove to position the reciprocating movement of the pressure release control disk relative to the drive shaft.
Further preferably, the pressure release assembly further comprises a reset elastic piece, and the free end of the pressure release piston is an inclined plane; the reset elastic piece is positioned between the shell and the pressure release control disc so as to drive the pressure release control disc to move to the positioning groove to be connected with the pressure release piston, so that the sliding block releases the driving of the protrusion.
The air conditioner compressor has the following beneficial technical effects:
1. in the invention, the rotor is arranged in the working cavity of the shell in a manner of being capable of radially and reciprocally sliding relative to the driving shaft, so that the rotor can be pressed against the state of sliding contact with the shell by means of the rotor elastic piece, the automatic compensation of the abrasion gap between the rotor and the shell is achieved, and the normal continuous operation of the air conditioner compressor is ensured.
2. In the invention, the sliding vane is designed to be in sliding connection with the shell, so that the sliding vane can reciprocate relative to the shell, and the compensation of the abrasion gap between the sliding vane and the rotor can be realized under the condition that the sliding vane and the rotor form sliding contact to divide the working cavity in the shell into the suction cavity and the air outlet cavity, thereby ensuring the normal continuous operation of the air conditioner compressor.
3. In the invention, the high-pressure coolant at the air outlet is led between the rotor and the driving shaft by arranging the pressure maintaining channel, so that the rotor can be kept in a position state of sliding contact with the shell by virtue of the high-pressure coolant auxiliary rotor elastic piece, and the stability and the reliability of the sliding contact between the rotor and the shell are improved.
4. According to the invention, the pressure release assembly is arranged, and the contact relation between the sliding vane and the rotor is controlled through the pressure detection of the coolant at the air outlet, so that the continuous rising of the coolant pressure at the air outlet caused by the blockage of the air outlet channel is avoided, the automatic stop control of the air conditioner compressor is realized, and the safe operation of the air conditioner compressor is ensured.
5. According to the invention, the pressure release assembly in the pendulum bob structure is adopted, so that the movement control of the pressure release control panel relative to the driving shaft can be achieved by utilizing the centrifugal force formed by the pressure release pendulum bob in the rotation process of the driving shaft, and further, the contact relation between the sliding sheets and the rotor is controlled by the pressure release connecting rod, the sliding block and the sliding sheet elastic piece, the automatic stop operation of the air conditioner compressor is realized, and the automatic protection effect of the air conditioner compressor is achieved.
Drawings
Fig. 1 is a schematic sectional view of an air conditioner compressor according to the present embodiment;
fig. 2 is a schematic sectional view of the air conditioner compressor according to the present embodiment along the direction A-A in fig. 1.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings and the examples.
As shown in fig. 1 and 2 in combination, the air conditioner compressor of the present embodiment includes a housing 1, a rotor 2, a driving shaft 3, a slide 41, and a rotor elastic member 5. A working chamber is provided in the interior of the housing 1, in which the rotor 2 is located in an eccentric manner. The drive shaft 3 is rotatably connected with the housing 1, while the drive shaft 3 penetrates the rotor 2 and is connected with the rotor 2 to drive the rotor 2 to rotate in the working chamber. One end of the slide 41 is slidably connected to the housing 1 and the other end extends into the working chamber and is held in sliding contact with the outer surface of the rotor 2.
The rotor 2 is slidably connected to the drive shaft 3 so that the rotor 2 can reciprocate relative to the drive shaft 3 in the radial direction of the drive shaft 3. The rotor elastic member 5 employs a coil spring and is disposed between the drive shaft 3 and the rotor 2 in the radial direction of the rotor 2 to drive the rotor 2 in sliding contact with the inner surface of the working chamber. Meanwhile, an air inlet 11 and an air outlet 12 are arranged on the shell 1, and the rotor 2 and the sliding sheets 41 divide the working cavity into an air suction cavity 13 and an air outlet cavity 14 which are mutually independent. The air inlet 11 and the air outlet 12 are respectively positioned at two sides of the sliding sheet 41, and the air inlet 11 is communicated with the air suction cavity 13, and the air outlet 12 is communicated with the air outlet cavity 14.
At this time, in the process that the driving shaft drives the rotor to rotate in the shell, the rotor elastic piece keeps exerting force on the rotor so that the rotor keeps contact with the inner surface of the working cavity in the shell. Therefore, when the rotor works for a long time and is worn, the wear clearance between the rotor and the inner surface of the working cavity in the shell can be driven and compensated under the action of the rotor elastic piece, so that the rotor can be ensured to continuously and effectively work, and the normal mechanical efficiency and the working effect of the air conditioner compressor are maintained.
Preferably, a pressure maintaining channel 6 is also provided in the air conditioner compressor of the present embodiment. Wherein the dwell passage 6 includes a first passage 61, a second passage 62 and an annular passage 63. The annular passage 63 is formed in an annular groove structure and is provided on the outer circumferential surface of the drive shaft 3. The first passage 61 is opened in the housing 1, and one end is kept in communication with the air outlet 12, and the other end is kept in communication with the annular passage 63. The second channel 62 opens on the drive shaft 3 and is in communication with the annular channel 63 at one end and with the cavity in which the rotor elastic member 5 is located at the other end.
At this time, the coolant with higher pressure at the air outlet can be led to between the rotor and the driving shaft by means of the pressure maintaining channel, so that the rotor is further pressed against the inner surface of the working cavity of the shell by the auxiliary rotor elastic piece, and a larger driving acting force is formed on the rotor along with the rising of the pressure of the output coolant at the air outlet, so that the rotor can be stably pressed against the inner surface of the shell, and the normal work of the air conditioner compressor is ensured.
In this embodiment, the pressure maintaining channel adopts an internal channel structure, that is, is formed by a plurality of channels formed on the housing and the driving shaft, so that the structural design of the whole air conditioner compressor can be optimized, and the flexible installation and use are facilitated. Also, in other embodiments, the pressure maintaining channel may be formed by combining an external pipe and an internal channel according to different designs and use environments.
Furthermore, the drive shaft 3 of the present embodiment is provided with a segment of a rectangular parallelepiped structure of the shaft block 31, while the inside of the rotor 2 is provided with a rectangular hole 21 in the radial direction thereof, and the rectangular hole 21 penetrates in the axial direction of the rotor 2. At this time, the drive shaft 3 passes through the rectangular hole 21, and the shaft block 31 is capable of relatively reciprocating in the radial direction of the rotor 2 within the rectangular hole 21, the rotor elastic member 5 is positioned within the rectangular hole 21 to form simultaneous contact with the rotor 2 and the drive shaft 3, and the second passage 62 also extends to form communication with the rectangular hole 21. Thus, the driving shaft drives the rotor to reciprocate through the shaft block and the rectangular hole, and meanwhile, the relative movement between the shaft block and the rectangular hole along the radial direction of the rotor is realized.
As shown in fig. 2, in the air conditioner compressor of the present embodiment, two sliding sheets 41 and 42 are provided. The slide 41 and the slide 42 are both located between the air inlet 11 and the air outlet 12, can be independently reciprocated with respect to the housing 1, and are respectively kept in sliding contact with the outer surface of the rotor 2, thereby forming a redundant design structure by providing two slides.
Therefore, even if irregular abrasion occurs between the end part of one sliding vane and the outer surface of the rotor and the other sliding vane can not keep in fit sliding contact, the other independent sliding vane can keep in fit sliding contact with the outer surface of the rotor, so that the solving capability of the air conditioner compressor on the abrasion condition of the outer surface of the rotor is improved, and the reliable operation of the air conditioner compressor is ensured. In other embodiments, the number of the sliding sheets can be adjusted according to different design and use conditions, so that specific design and use requirements are met.
In addition, the air conditioner compressor of the present embodiment is further provided with a slide elastic member 7. The vane elastic member 7 employs a coil spring and is located between the housing 1 and the vanes 41 and 42 to drive the vanes 41 and 42 to move relative to the housing 1 and to maintain contact with the outer surface of the rotor 2, respectively.
Therefore, the sliding vane and the rotor can be kept in sliding contact by utilizing the sliding vane elastic piece, and compensation can be performed in real time when the end part of the sliding vane is worn, so that stable sliding contact between the sliding vane and the rotor is ensured. Also, in other embodiments, other ways may be used to achieve the design that the sliding vane is kept in contact with the outer surface of the rotor, for example, a sliding vane in the form of a telescopic rod structure is used, so that the sliding vane can be used to supplement wear by using the telescopic function of the sliding vane itself, and stable contact between the sliding vane and the rotor is ensured.
As shown in fig. 1, a pressure release assembly 8 is also provided in the air conditioner compressor of the present embodiment. The pressure release assembly 8 is connected with the sliding vane 41 and the sliding vane 42, and can drive the sliding vane 41 and the sliding vane 42 to move relative to the shell 1 to be out of contact with the outer surface of the rotor 2 according to the pressure change of the air outlet 12, so that the air suction cavity 13 and the air outlet cavity 14 are communicated, and the shutdown operation of the air conditioner compressor is achieved.
In the present embodiment, the pressure release assembly 8 includes a slider 81, a slide groove 15 is provided on the housing 1, and protrusions 43 are provided on both the slide 41 and the slide 42. The sliding groove 15 is opened along the direction of the sliding piece 41 moving reciprocally relative to the housing 1, the protrusion 43 extends into the sliding groove 15, and the sliding piece 81 is located in the sliding groove 15 and can move reciprocally along the sliding groove 15, so that the sliding piece 41 and the sliding piece 42 are driven by the protrusion 43 to move relative to the housing 1 against the sliding piece elastic piece 7, and thus, the contact with the rotor 2 is removed.
Therefore, the sliding block can reciprocate in the sliding groove according to the pressure change of the air outlet, and the driving control of the sliding block according to the pressure change of the air outlet can be achieved, so that the stop control of the air conditioner compressor is achieved.
Further, the pressure release assembly 8 further includes a pressure release passage 82, a pressure release piston 83, a pressure release elastic member 84, a pressure release control panel 85, a pressure release link 86, and a pressure release pendulum 87. Wherein the pressure release piston 83 is located on the drive shaft 3 and is slidably connected to the drive shaft 3 in the diameter direction of the drive shaft 3, and is capable of reciprocating relative movement in the radial direction of the drive shaft 3. The pressure release elastic member 84 employs a coil spring and is located between the pressure release piston 83 and the drive shaft 3 to drive the pressure release piston 83 to extend out of the drive shaft 3. The pressure release passage 82 is opened on the drive shaft 3, and one end communicates with the air outlet 12 through the pressure maintaining passage 6, and the other end extends between the pressure release piston 83 and the drive shaft 3 to drive the pressure release piston 83 to move relative to the drive shaft 3 against the pressure release elastic member 84.
The pressure release control plate 85 is sleeved on the driving shaft 3 in a sliding manner along the axial direction of the driving shaft 3, and a positioning groove 851 is formed on the pressure release control plate 85. One end of the pressure release connecting rod 86 is in sliding connection with the outer circumferential surface of the pressure release control disc 85 through a rotating ring 88, and the other end of the pressure release connecting rod is in movable connection with the sliding block 81 so as to directly drive the sliding block 81 to reciprocate along the sliding groove 15.
The end of the pressure release pendulum 87 is slidably connected with the driving shaft 3 through a waist-shaped groove, and the middle position of the pressure release pendulum 87 is movably connected with the pressure release control panel 85, so that the pressure release pendulum 87 can drive the pressure release control panel 85 to reciprocate along the axial direction of the driving shaft 3 under the action of centrifugal force. Meanwhile, the pressure release piston 82 can form a selective connection with the positioning groove 851 to position the relative position of the pressure release control disk 85 to reciprocate relative to the drive shaft 3.
At this time, when the acting force of the air outlet pressure to the pressure release piston is smaller than the acting force of the pressure release elastic piece to the pressure release piston, the pressure release piston stretches out and is kept in the positioning groove, so that the position relation between the pressure release rotary disc and the driving shaft is positioned, and the sliding block is moved to a position where the sliding block is kept in contact with the outer surface of the rotor under the action of the sliding block elastic piece through the pressure release connecting rod, so that the air conditioner compression pump works normally. On the contrary, when the acting force of the air outlet pressure to the pressure release piston is larger than the acting force of the pressure release elastic piece to the pressure release piston, the pressure release piston is separated from the connection with the positioning groove against the action of the pressure release elastic piece, so that the pressure release pendulum bob starts to be unfolded under the action of the centrifugal force formed by the driving of the driving shaft, the pressure release turntable is driven to move along the axial direction of the driving shaft, and the sliding piece is driven to move along the sliding groove through the pressure release connecting rod, so that the sliding piece is driven to separate from the contact with the rotor against the sliding piece elastic piece, and the air conditioner compression pump stops working.
Still further, the pressure relief assembly 8 further includes a return spring 89, while the free end of the pressure relief piston 83 is in a beveled configuration. Wherein, the reset elastic member 89 adopts a coil spring and is sleeved on the driving shaft 3 and is positioned between the shell 1 and the pressure release control disc 85 to drive the pressure release control disc 85 to move to a position where the positioning groove 851 and the pressure release piston 83 form connection, and further drive the sliding block 81 to move to release the driving of the protrusion 43 through the pressure release connecting rod 86, even if the sliding piece 41 and the sliding piece 42 restore to move to a contact position with the rotor 2.
When the pressure of the air outlet is reduced and the rotating speed of the driving shaft is reduced, the pressure release pendulum bob is folded under the action of gravity, and under the action of the reset elastic piece, the pressure release control panel starts to reversely move to the position where the positioning groove is connected with the pressure release piston, so that the pressure release control panel drives the sliding block to move through the pressure release connecting rod, and under the action of the sliding sheet elastic piece, the sliding sheet moves to the position where the sliding sheet contacts with the rotor again, and the air conditioner compressor is automatically reset, so that the air conditioner compressor can quickly enter normal operation again.
As shown in fig. 1 and 2, the specific process of the air conditioner compressor according to the present embodiment is as follows:
when the air conditioner compressor works normally, the sliding vane 41 and the sliding vane 42 are in a protruding state under the action of the sliding vane elastic piece 7 and keep sliding contact with the outer surface of the rotor 2, and meanwhile, the rotor 2 moves to keep sliding contact with the inner surface of the working cavity of the shell 1 relative to the shaft block 31 of the driving shaft 3 under the action of the rotor elastic piece 5. At this time, the driving shaft 3 drives the rotor 2 to eccentrically and synchronously rotate in the clockwise direction shown in fig. 2 in the working cavity of the housing 1 through the shaft block 31, so that the refrigerant enters the suction cavity 13 with the enlarged cavity from the air inlet 11, and the air outlet cavity 14 with the smaller cavity outputs the high-pressure state refrigerant through the air outlet 12, thereby realizing continuous output of the refrigerant.
In the process, the high-pressure coolant at the air outlet 12 flows into the square hole 21 between the shaft block 31 and the rotor 2 through the pressure maintaining passage 6 to form an assist force pressing the rotor 2 against the inner surface of the working chamber in the housing 1, thereby assisting the rotor elastic member 5 to maintain the normal operation of the rotor 2 in the working chamber in the housing 1. Meanwhile, the high-pressure coolant at the air outlet 12 flows to the pressure release piston 83 through the pressure maintaining channel 6 and the pressure release channel 82, and at this time, the acting force of the coolant pressure at the air outlet 12 on the pressure release piston 83 is smaller than the acting force of the pressure release elastic member 84 on the pressure release piston 83, so that the pressure release piston 83 is kept in an extended state and is positioned in the positioning groove 851, the position between the pressure release control panel 85 and the driving shaft 3 is positioned, and the sliding block 81 is kept at the position where the sliding vane 41 and the sliding vane 42 are in sliding contact with the rotor 2 under the action of the sliding vane elastic member 7 through the pressure release connecting rod 86, so that the air conditioner compressor is ensured to normally output the coolant.
When the air conditioner compressor runs for a long time and the contact position of the rotor 2 and the shell 1 is worn, the rotor 2 moves relative to the shaft block 31 under the combined action of the high-pressure coolant introduced by the rotor elastic piece 5 and the pressure maintaining channel 6, so that gaps between the rotor 2 and the inner surface of the working cavity in the shell 1 due to wear are supplemented, effective sliding contact between the rotor 2 and the working cavity in the shell 1 is ensured, and normal operation of the air conditioner compressor is ensured.
When the air conditioner compressor runs for a long time and the sliding vane 41 or the sliding vane 42 is worn at the position where the sliding vane 42 is in sliding contact with the rotor 2, the sliding vane 41 and the sliding vane 42 move relative to the shell 1 under the action of the sliding vane elastic piece 7, so that gaps between the sliding vane 41 and the sliding vane 42 and the rotor 2 are complemented, the effective sliding contact between the sliding vane 41 and the sliding vane 42 and the rotor 2 is maintained, and the normal operation of the air conditioner compressor is ensured. Meanwhile, since the sliding vane 41 and the sliding vane 42 respectively form independent sliding with the shell 1 through the independent sliding vane elastic piece 7, when the end face of one sliding vane is severely worn and cannot keep effective sliding contact with the rotor 2, the other sliding vane can form effective sliding contact with the rotor 2 without being influenced, thereby achieving redundancy effect and further ensuring the normal operation of the air-conditioning compressor.
When the exhaust passage is blocked, that is, when the pressure of the coolant output from the air outlet 12 rises to a certain extent, the pressure can be regulated by the preset pressure of the pressure release elastic member 84, the coolant from the air outlet 12 flows to the pressure release piston 83 through the pressure maintaining passage 6 and the pressure release passage 82 and drives the pressure release piston 83 to perform recovery movement with respect to the drive shaft 3 against the urging force of the pressure release elastic member 84, and is removed from the positioning groove 851, thereby releasing the positioning between the pressure release control panel 85 and the drive shaft 3. At this time, the pressure release pendulum 87 is unfolded under the action of the centrifugal force generated by the driving shaft 3, so as to drive the pressure release control panel 85 to move relative to the driving shaft 3 against the action of the reset elastic member 89, namely, move along the rightward direction shown in fig. 1, further drive the sliding block 81 to move along the sliding groove 15 through the pressure release connecting rod 86, form contact with the protrusion 43 by the sliding block 81, drive the sliding vane 41 and the sliding vane 42 to move relative to the shell 1 and overcome the contact of the sliding vane elastic member 7 to separate from the rotor 2, and directly communicate the air suction cavity 13 with the air outlet cavity 14, so that the air conditioner compressor stops outputting the coolant, avoids continuous high-pressure operation of the air conditioner compressor, and achieves automatic protection of the air conditioner compressor.
When the air conditioner compressor stops operating, the drive shaft 3 stops rotating, and the pressure in the pressure release passage 82 is released. Wherein, the pressure release pendulum bob 87 loses centrifugal force and performs recovery movement under the action of gravity, thereby driving the pressure release control disc 85 to move relative to the driving shaft 3, and meanwhile, the reset elastic piece 89 drives the pressure release control disc 85 to move relative to the driving shaft 3, so that the pressure release control disc 85 moves leftwards as shown in fig. 1, and further, the pressure release connecting rod 86 drives the sliding block 81 to reversely move along the sliding groove 15, so that the sliding block 81 loses the acting force on the protrusion 43, and the sliding piece 41 and the sliding piece 42 move to the position in sliding contact with the rotor 2 again under the acting force of the sliding piece elastic piece 7. In the process of driving the pressure release control disc 85 to move by the pressure release pendulum bob 87 and the reset elastic piece 89, the pressure release control disc 85 is contacted with the inclined surface of the free end in the pressure release piston 83, so that the pressure release piston 83 can be automatically driven to overcome the pressure release elastic piece 84 and continuously move to the alignment position of the positioning groove 851 and the pressure release piston 83, and then the pressure release piston 83 is in plug-in connection with the positioning groove 851 again under the action of the pressure release elastic piece 84, the pressure release control disc 85 is repositioned at the position shown in fig. 1, the automatic reset operation is completed, and the air conditioner compressor can be directly started for use next time.

Claims (6)

1. An air conditioner compressor is characterized by comprising a shell, a rotor, a driving shaft, a sliding vane and a rotor elastic piece; the rotor is positioned in the working cavity in an eccentric mode, and the driving shaft is connected with the rotor and can drive the rotor to rotate in the working cavity; one end of the sliding sheet is in sliding connection with the shell, and the other end of the sliding sheet extends into the working cavity and is in sliding contact with the outer surface of the rotor; the rotor is slidably connected with the driving shaft, and can reciprocate relative to the driving shaft along the radial direction of the driving shaft; the rotor elastic piece is arranged between the driving shaft and the rotor along the radial direction of the rotor so as to drive the rotor to keep sliding contact with the inner surface of the working cavity; the shell is provided with an air inlet and an air outlet, the rotor and the sliding sheets divide the working cavity into an air suction cavity and an air outlet cavity which are mutually independent, the air inlet is communicated with the air suction cavity, and the air outlet is communicated with the air outlet cavity;
the air conditioner compressor is also provided with a pressure release assembly; the pressure release assembly is connected with the sliding vane and can drive the sliding vane to move out of contact with the outer surface of the rotor according to pressure change of the air outlet;
the pressure release assembly comprises a sliding block, a sliding groove is formed in the shell, and a protrusion is arranged on the sliding block; the sliding groove is formed in the direction that the sliding piece moves back and forth relative to the shell, the protrusion extends into the sliding groove, the sliding block is located in the sliding groove and can move back and forth along the sliding groove, and the protrusion drives the sliding piece to move relative to the shell against the sliding piece elastic piece;
the pressure release assembly further comprises a pressure release channel, a pressure release piston, a pressure release elastic piece, a pressure release control panel, a pressure release connecting rod and a pressure release pendulum; the pressure release piston is in sliding connection with the driving shaft and can reciprocate along the radial direction of the driving shaft; the pressure release elastic piece is positioned between the pressure release piston and the driving shaft to drive the pressure release piston to extend out of the driving shaft; one end of the pressure release channel is communicated with the air outlet, and the other end of the pressure release channel extends between the pressure release piston and the driving shaft so as to drive the pressure release piston to move against the pressure release elastic piece; the pressure release control disc is sleeved on the driving shaft in a sliding manner along the axial direction of the driving shaft, and a positioning groove is formed in the pressure release control disc; one end of the pressure release connecting rod is connected with the pressure release control panel in a sliding way, and the other end of the pressure release connecting rod is connected with the sliding block so as to drive the sliding block to reciprocate along the sliding groove; the end part of the pressure release pendulum is movably connected with the driving shaft, and the middle position of the pressure release pendulum is movably connected with the control panel so as to drive the control panel to reciprocate along the axial direction of the driving shaft; the pressure release piston can be selectively connected with the positioning groove to position the reciprocating movement of the pressure release control disc relative to the driving shaft;
the pressure release assembly further comprises a reset elastic piece, and the free end of the pressure release piston is an inclined plane; the reset elastic piece is positioned between the shell and the pressure release control disc so as to drive the pressure release control disc to move to the positioning groove to be connected with the pressure release piston, so that the sliding block releases the driving of the protrusion.
2. The air conditioner compressor as set forth in claim 1, further comprising a pressure maintaining passage; one end of the pressure maintaining channel is communicated with the air outlet, and the other end of the pressure maintaining channel extends to the containing cavity where the rotor elastic piece is located, so that the rotor elastic piece is assisted to drive the rotor to keep at a position in sliding contact with the inner surface of the working cavity.
3. The air conditioner compressor of claim 2, wherein the dwell passage includes a first passage, a second passage, and an annular passage; the annular channel is arranged on the outer circumferential surface of the driving shaft, one end of the first channel is communicated with the air outlet, the other end of the first channel is communicated with the annular channel, one end of the second channel is communicated with the annular channel, and the other end of the second channel is communicated with the containing cavity where the rotor elastic piece is located.
4. The air conditioner compressor according to claim 1, wherein a section of a shaft block in a rectangular parallelepiped structure is provided on the driving shaft, a rectangular hole along a radial direction thereof is provided in the rotor, and the rectangular hole penetrates along an axial direction of the rotor; the drive shaft passes through the oblong hole, and the shaft block and the oblong hole form a sliding connection along the radial direction of the rotor.
5. The air conditioner compressor as set forth in claim 1, wherein the air conditioner compressor is provided with at least two sliding sheets; the sliding sheets are positioned between the air inlet and the air outlet and respectively keep sliding contact with the outer surface of the rotor.
6. The air conditioner compressor as set forth in claim 5, further comprising a sliding vane elastic member; the slide elastic piece is positioned between the shell and the slide to drive the slide to move relative to the shell and keep contact with the outer surface of the rotor.
CN202110907966.3A 2021-08-09 2021-08-09 Air conditioner compressor Active CN113446222B (en)

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CN2074383U (en) * 1990-07-07 1991-04-03 西安交通大学 Rotary-piston compressor
JP2003286979A (en) * 2003-01-28 2003-10-10 ▲荒▼田 哲哉 Helical blade compressor
CN102080656A (en) * 2009-11-26 2011-06-01 广东美芝制冷设备有限公司 Double-vane rotary compressor
CN103727032A (en) * 2013-12-16 2014-04-16 西安交通大学 Low-back-pressure non-lubricating-oil rolling piston type refrigeration compressor
CN104895791A (en) * 2014-03-06 2015-09-09 艾默生环境优化技术(苏州)有限公司 Rolling rotor type compression mechanism and compressor comprising same
CN106593869A (en) * 2015-10-16 2017-04-26 珠海格力节能环保制冷技术研究中心有限公司 Two-stage variable-capacity compressor and air conditioning system provided with same
CN107989793A (en) * 2017-12-25 2018-05-04 珠海格力电器股份有限公司 Cylinder assembly and compressor comprising same
CN111852865A (en) * 2019-04-28 2020-10-30 珠海格力节能环保制冷技术研究中心有限公司 Variable volume mechanism, compressor and air conditioner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2074383U (en) * 1990-07-07 1991-04-03 西安交通大学 Rotary-piston compressor
JP2003286979A (en) * 2003-01-28 2003-10-10 ▲荒▼田 哲哉 Helical blade compressor
CN102080656A (en) * 2009-11-26 2011-06-01 广东美芝制冷设备有限公司 Double-vane rotary compressor
CN103727032A (en) * 2013-12-16 2014-04-16 西安交通大学 Low-back-pressure non-lubricating-oil rolling piston type refrigeration compressor
CN104895791A (en) * 2014-03-06 2015-09-09 艾默生环境优化技术(苏州)有限公司 Rolling rotor type compression mechanism and compressor comprising same
CN106593869A (en) * 2015-10-16 2017-04-26 珠海格力节能环保制冷技术研究中心有限公司 Two-stage variable-capacity compressor and air conditioning system provided with same
CN107989793A (en) * 2017-12-25 2018-05-04 珠海格力电器股份有限公司 Cylinder assembly and compressor comprising same
CN111852865A (en) * 2019-04-28 2020-10-30 珠海格力节能环保制冷技术研究中心有限公司 Variable volume mechanism, compressor and air conditioner

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