CN112737210A - Rotating speed adjusting device of compressor driving mechanism - Google Patents

Rotating speed adjusting device of compressor driving mechanism Download PDF

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Publication number
CN112737210A
CN112737210A CN202011559425.8A CN202011559425A CN112737210A CN 112737210 A CN112737210 A CN 112737210A CN 202011559425 A CN202011559425 A CN 202011559425A CN 112737210 A CN112737210 A CN 112737210A
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CN
China
Prior art keywords
overload
cavity
fixedly provided
compressor
disc
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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.)
Withdrawn
Application number
CN202011559425.8A
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Chinese (zh)
Inventor
邵宇
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Jiangxi Yiteng Electric Co ltd
Original Assignee
Jiangxi Yiteng Electric Co ltd
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Publication date
Application filed by Jiangxi Yiteng Electric Co ltd filed Critical Jiangxi Yiteng Electric Co ltd
Priority to CN202011559425.8A priority Critical patent/CN112737210A/en
Publication of CN112737210A publication Critical patent/CN112737210A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The invention relates to the technical field of compressor manufacturing, and discloses a rotating speed adjusting device of a compressor driving mechanism, which comprises a shell, wherein a driving shaft is rotatably connected inside the shell, an overload disc is fixedly connected to the surface of the driving shaft, a coil bundle is fixedly arranged in the center of the surface of the overload disc, an overload cavity is fixedly arranged on the surface of the coil bundle, a speed limiting rod is slidably connected inside the overload cavity, a speed limiting block is fixedly arranged at one end, far away from the coil bundle, of the speed limiting rod, and conductive blocks are fixedly arranged on the left side and the right side of the overload cavity. This compressor actuating mechanism rotational speed adjusting device, when the speed that the drive shaft surpassed rated revolution rotates, carries out the speed limit to the drive shaft, prevents that overload operation from resulting in equipment to damage, when the inside temperature of compressor risees, cools down to the compressor, automatic disconnection compressor's drive switch when the cooling effect is not obvious prevents that compressor high temperature operation from resulting in life to reduce.

Description

Rotating speed adjusting device of compressor driving mechanism
Technical Field
The invention relates to the technical field of compressor manufacturing, in particular to a rotating speed adjusting device of a compressor driving mechanism.
Background
The rotary compressor has the characteristics of high compression efficiency, few parts, small volume and light weight, so a high-pressure state needs to be made in a shell, and further the motor and the air compressor are easy to overheat, a traditional internal cooling system can only simply cool, warning cannot be given out when the internal temperature of the compressor is too high, the service life of the compressor is shortened due to overheat operation of the compressor, when the compressor runs in an overload mode, a driving mechanism of the rotary compressor rotates at the speed exceeding the rated rotating speed, and equipment is easy to damage due to long-time work.
In order to solve the above problems, the inventor provides a rotational speed adjusting device for a compressor driving mechanism, which limits the speed of a driving shaft when the driving shaft rotates at a speed exceeding the rated rotational speed, so as to prevent equipment damage caused by overload operation, cools the compressor when the internal temperature of the compressor rises, and automatically disconnects a driving switch of the compressor when the cooling effect is not obvious, so as to prevent the service life of the compressor from being reduced caused by high-temperature operation.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a rotating speed adjusting device of a compressor driving mechanism, which has the advantages of overload operation prevention and high-temperature early warning, and solves the problems that equipment is damaged due to overload operation and rapid early warning cannot be realized when the temperature is not obviously reduced under the high-temperature condition.
(II) technical scheme
In order to achieve the purposes of preventing overload operation and high-temperature early warning, the invention provides the following technical scheme: a rotating speed adjusting device of a compressor driving mechanism comprises a shell, wherein a driving shaft is rotatably connected inside the shell, an overload disc is fixedly connected to the surface of the driving shaft, a coil bundle is fixedly installed at the center of the surface of the overload disc, an overload cavity is fixedly installed on the surface of the coil bundle, a speed limiting rod is slidably connected inside the overload cavity, a speed limiting block is fixedly installed at one end, far away from the coil bundle, of the speed limiting rod, conducting blocks are fixedly installed at the left side and the right side of the overload cavity, a spring rod is slidably connected to the surface of the overload disc, an electromagnet is fixedly installed at one end, close to the edge of the overload disc, of the spring rod, a friction block is fixedly installed at the other end of the overload disc, a magnetic block is fixedly installed at the edge of the overload disc, a convex block is fixedly installed at the top of the overload disc on the surface of the driving shaft, the inside fixed mounting in cooling chamber has the cooling fan, the left and right sides fixed mounting in cooling chamber has the temperature sensing chamber, the inside sliding connection in temperature sensing chamber has the push rod, the inside temperature sensing chamber of casing keeps away from the one end fixed mounting of drive shaft has the control chamber, the inside rotation in control chamber installs the quarter gear, the front end fixed mounting of quarter gear has the feeler lever, the inside one end of keeping away from the quarter gear of control chamber rotates and is connected with the half gear, the front end fixed mounting of half gear has the double-throw switch, the top fixed mounting of feeler lever and double-throw switch has the contact.
Preferably, the overload cavity contains an electrorheological fluid, the electrorheological fluid is a suspension formed by adding gypsum, lime and carbon powder into olive oil and mixing with water and stirring, and the firmness degree of the electrorheological fluid is in direct proportion to the intensity of the introduced current.
Preferably, one end of the speed limiting rod, which is close to the coil bundle, is movably connected with the overload cavity through a return spring.
Preferably, the conductive block is electrically connected with the coil tie.
Preferably, the temperature sensing cavity contains a dichloromethane solution, and the dichloromethane solution is a low boiling point solution and is gasified when meeting high temperature.
Preferably, the upper end and the lower end of the push rod are provided with teeth matched with the half gear and the quarter gear, and the push rod is movably connected with one end, far away from the control cavity, of the temperature sensing cavity through a return spring.
Preferably, the edge of the inner part of the control cavity is fixedly provided with a contact which respectively controls the cooling fan and the switch of the driving shaft.
(III) advantageous effects
Compared with the prior art, the invention provides a rotating speed adjusting device of a compressor driving mechanism, which has the following beneficial effects:
1. the rotating speed adjusting device of the compressor driving mechanism drives the driving shaft to rotate, the driving shaft drives the overload disc to rotate, the overload disc rotates to drive the coil bundle to rotate, the coil bundle rotates to cut a magnetic induction line of a magnetic block to generate induction current, when the driving shaft runs in an overload state, the rotating speed of the driving shaft is increased, the induction current generated by the coil bundle is increased, the power quantity of a conductive block electrically connected with the coil bundle is increased, a current variant in an overload cavity is changed into a solid, the position state of the speed limiting rod is limited, the speed limiting block is in contact with the convex block in the rotating process of the speed limiting rod, the rotation of the overload disc is reduced, the electromagnet is powered while the coil bundle is powered, the electromagnet and the magnetic block repel each other and drive the spring rod to move towards the driving shaft, the spring rod drives the friction block to move towards the driving shaft, and further enables the friction block, further preventing the reduction of the service life of the equipment caused by the overload operation of the driving mechanism.
2. This compressor actuating mechanism rotational speed adjusting device, when high temperature appears through the casing is inside, the inside dichloromethane gasification of temperature sensing chamber, gaseous promotion push rod removes to the control chamber direction, the push rod drives quarter gear revolve, quarter gear drives the movable contact bar and rotates, the contact bar rotates and drives movable contact and contact, and then make the cooling fan open, the cooling fan cools down to the casing is inside, when the cooling effect of cooling fan is not obvious, the push rod continues to move to and the half gear meshing, the push rod drives the disconnection of half gear revolve until double-throw switch, make the drive end of drive shaft stop to the drive shaft power supply, make the drive shaft stall, prevent that overheated continuous operation from leading to equipment life to reduce.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the overload disk structure of the present invention;
FIG. 3 is a schematic diagram illustrating the operation of the FIG. 2 arrangement of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 5 is a schematic diagram illustrating the operation of the structure of FIG. 4 according to the present invention.
In the figure: 1. a housing; 2. a drive shaft; 3. an overload disk; 4. bundling the coil; 5. an overload chamber; 6. a speed limiting rod; 7. a speed limit block; 8. a conductive block; 9. a spring lever; 10. an electromagnet; 11. a friction block; 12. a magnetic block; 13. a convex block; 14. a cooling cavity; 15. a cooling fan; 16. a temperature sensing cavity; 17. a push rod; 18. a control chamber; 19. a quarter gear; 20. a feeler lever; 21. a half gear; 22. a double throw switch; 23. and a contact.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a rotational speed adjusting device of a compressor driving mechanism comprises a housing 1, a driving shaft 2 is rotatably connected inside the housing 1, an overload disk 3 is fixedly connected to the surface of the driving shaft 2, a coil bundle 4 is fixedly installed at the center of the surface of the overload disk 3, an overload cavity 5 is fixedly installed on the surface of the coil bundle 4, an electrorheological body is contained inside the overload cavity 5, the electrorheological body is a suspension liquid formed by mixing gypsum, lime and carbon powder in olive oil and water and stirring, the firmness of the electrorheological body is in direct proportion to the intensity of the introduced current, a speed limiting rod 6 is slidably connected inside the overload cavity 5, one end of the speed limiting rod 6 close to the coil bundle 4 is movably connected with the overload cavity 5 through a return spring, a speed limiting block 7 is fixedly installed at one end of the speed limiting rod 6 far away from the coil bundle 4, conductive blocks 8 are fixedly installed at the left side and the right side of the overload cavity 5, the surface of the overload disc 3 is connected with a spring rod 9 in a sliding way, one end of the spring rod 9 close to the edge of the overload disc 3 is fixedly provided with an electromagnet 10, the other end of the overload disc 3 is fixedly provided with a friction block 11, the edge of the overload disc 3 is fixedly provided with a magnetic block 12, the top of the overload disc 3 on the surface of the driving shaft 2 is fixedly provided with a convex block 13, the bottom of the overload disc 3 in the shell 1 is fixedly provided with a cooling cavity 14, the inside of the cooling cavity 14 is fixedly provided with a cooling fan 15, the left side and the right side of the cooling cavity 14 are fixedly provided with temperature sensing cavities 16, the inside of the temperature sensing cavity 16 is provided with dichloromethane solution, the dichloromethane solution is low-boiling-point solution and is gasified when encountering high temperature, the inside of the temperature sensing cavity 16 is connected with a push rod 17 in a sliding way, the upper end and the lower end of the push rod 17 are provided with teeth matched with a half gear, one end fixed mounting that drive shaft 2 was kept away from to inside temperature sensing chamber 16 of casing 1 has control chamber 18, the inside marginal fixed mounting in control chamber 18 has the contact, the switch of cooling fan 15 and drive shaft 2 is controlled respectively to the contact, quarter gear 19 is installed in the inside rotation of control chamber 18, quarter gear 19's front end fixed mounting has feeler lever 20, the inside one end of keeping away from quarter gear 19 of control chamber 18 rotates and is connected with half gear 21, half gear 21's front end fixed mounting has double-throw switch 22, feeler lever 20 and double-throw switch 22's top fixed mounting has contact 23.
The working principle is that the driving shaft 2 is driven to rotate, the driving shaft 2 drives the overload disc 3 to rotate, the overload disc 3 drives the coil bundle 4 to rotate, the coil bundle 4 rotates to cut a magnetic induction line of the magnetic block 12 to generate induction current, when the driving shaft 2 runs in an overload mode, the rotating speed of the driving shaft 2 is increased, the induction current generated by the coil bundle 4 is increased, the power quantity of a conductive block 8 electrically connected with the coil bundle 4 is increased, a current variant in the overload cavity 5 is changed into a solid, the position state of the speed limiting rod 6 is further limited, the speed limiting block 7 is in contact with the convex block 13 in the rotating process of the speed limiting rod 6, the rotation of the overload disc 3 is reduced, the electromagnet 10 is powered while the coil bundle 4 is powered, the electromagnet 10 and the magnetic block 12 repel each other and drive the spring rod 9 to move towards the driving shaft 2, the spring rod 9 drives the friction block 11 to, thereby limiting the speed of the driving shaft 2 by the friction block 11, further preventing the reduction of the service life of the equipment caused by the overload operation of the driving mechanism, when high temperature occurs in the shell 1, dichloromethane in the temperature sensing cavity 16 is gasified, gas pushes the push rod 17 to move towards the control cavity 18, the push rod 17 drives the quarter gear 19 to rotate, the quarter gear 19 drives the contact rod 20 to rotate, the contact rod 20 rotates to drive the moving contact 23 to contact with the contact, further, the cooling fan 15 is turned on, the cooling fan 15 cools the inside of the casing 1, when the cooling effect of the cooling fan 15 is not obvious, the push rod 17 continues to move to be meshed with the half gear 21, the push rod 17 drives the half gear 21 to rotate until the double-throw switch 22 is switched off, the driving end of the driving shaft 2 stops supplying power to the driving shaft 2, so that the driving shaft 2 stops rotating, and the service life of the equipment is prevented from being reduced due to overheating continuous operation.
In summary, in the speed adjusting device of the compressor driving mechanism, the driving shaft 2 is driven to rotate, the driving shaft 2 drives the overload disk 3 to rotate, the overload disk 3 drives the coil bundle 4 to rotate, the coil bundle 4 rotates to cut the magnetic induction lines of the magnetic blocks 12 to generate induction current, when the driving shaft 2 is in overload operation, the rotating speed of the driving shaft 2 is increased, so that the induction current generated by the coil bundle 4 is increased, the energization amount of the conductive block 8 electrically connected with the coil bundle 4 is increased, so that the current variation in the overload cavity 5 is changed into solid, the position state of the speed limiting rod 6 is limited, the speed limiting block 7 is in contact with the convex block 13 in the rotating process of the speed limiting rod 6, the rotation of the overload disk 3 is reduced, the electromagnet 10 is energized while the coil bundle 4 is energized, the electromagnet 10 and the magnetic blocks 12 repel each other and drive the spring rod 9 to move towards the driving shaft 2, the spring rod 9 drives the friction block 11, further, the friction block 11 limits the speed of the driving shaft 2, and further prevents the reduction of the service life of the equipment caused by the overload operation of the driving mechanism.
And, this compressor actuating mechanism rotational speed adjusting device, when high temperature appears through casing 1 is inside, the inside dichloromethane gasification of temperature sensing chamber 16, gaseous promotion push rod 17 moves to control chamber 18 direction, push rod 17 drives quarter gear 19 and rotates, quarter gear 19 drives feeler lever 20 and rotates, feeler lever 20 rotates and drives moving contact 23 and contact, and then make cooling fan 15 open, cooling fan 15 cools down casing 1 is inside, when cooling effect of cooling fan 15 is not obvious, push rod 17 continues to move to and half gear 21 meshing, push rod 17 drives half gear 21 and rotates until double-throw switch 22 disconnection, make the drive end of drive shaft 2 stop to drive shaft 2 power supply, make drive shaft 2 stall, prevent that overheated continuous operation from leading to equipment life to reducing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A compressor drive mechanism speed adjustment device, includes casing (1), its characterized in that: the inner part of the shell (1) is rotatably connected with a driving shaft (2), the surface of the driving shaft (2) is fixedly connected with an overload disc (3), the center of the surface of the overload disc (3) is fixedly provided with a coil bundle (4), the surface of the coil bundle (4) is fixedly provided with an overload cavity (5), the inner part of the overload cavity (5) is slidably connected with a speed limiting rod (6), one end, far away from the coil bundle (4), of the speed limiting rod (6) is fixedly provided with a speed limiting block (7), the left side and the right side of the overload cavity (5) are fixedly provided with conductive blocks (8), the surface of the overload disc (3) is slidably connected with a spring rod (9), one end, close to the edge of the overload disc (3), of the spring rod (9) is fixedly provided with an electromagnet (10), the other end of the overload disc (3) is fixedly provided with a friction block (11), the edge of the overload disc (3) is fixedly, the top of the overload disc (3) on the surface of the driving shaft (2) is fixedly provided with a convex block (13), the bottom of the overload disc (3) in the shell (1) is fixedly provided with a cooling cavity (14), the inside of the cooling cavity (14) is fixedly provided with a cooling fan (15), the left side and the right side of the cooling cavity (14) are fixedly provided with temperature sensing cavities (16), the inside of each temperature sensing cavity (16) is connected with a push rod (17) in a sliding manner, one end, far away from the driving shaft (2), of each temperature sensing cavity (16) in the shell (1) is fixedly provided with a control cavity (18), the inside of each control cavity (18) is rotatably provided with a quarter gear (19), the front end of each quarter gear (19) is fixedly provided with a touch rod (20), one end, far away from the quarter gear (19), in the control cavity (18) is rotatably connected with a half gear (21, the front end of the half gear (21) is fixedly provided with a double-throw switch (22), and the top ends of the feeler lever (20) and the double-throw switch (22) are fixedly provided with a contact (23).
2. A rotational speed adjusting apparatus of a driving mechanism of a compressor according to claim 1, wherein: the inside of the overload cavity (5) is filled with an electrorheological fluid, and the electrorheological fluid is a suspension formed by adding gypsum, lime and carbon powder into olive oil and mixing water and stirring.
3. A rotational speed adjusting apparatus of a driving mechanism of a compressor according to claim 1, wherein: one end of the speed limiting rod (6) close to the coil bundle (4) is movably connected with the overload cavity (5) through a return spring.
4. A rotational speed adjusting apparatus of a driving mechanism of a compressor according to claim 1, wherein: the conductive block (8) is electrically connected with the coil bundle (4).
5. A rotational speed adjusting apparatus of a driving mechanism of a compressor according to claim 1, wherein: the temperature sensing cavity (16) contains dichloromethane solution.
6. A rotational speed adjusting apparatus of a driving mechanism of a compressor according to claim 1, wherein: the upper end and the lower end of the push rod (17) are provided with teeth matched with the half gear (21) and the quarter gear (19), and the push rod (17) is movably connected with one end, far away from the control cavity (18), of the temperature sensing cavity (16) through a return spring.
7. A rotational speed adjusting apparatus of a driving mechanism of a compressor according to claim 1, wherein: and the edge inside the control cavity (18) is fixedly provided with a contact which respectively controls the switch of the cooling fan (15) and the drive shaft (2).
CN202011559425.8A 2020-12-25 2020-12-25 Rotating speed adjusting device of compressor driving mechanism Withdrawn CN112737210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011559425.8A CN112737210A (en) 2020-12-25 2020-12-25 Rotating speed adjusting device of compressor driving mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011559425.8A CN112737210A (en) 2020-12-25 2020-12-25 Rotating speed adjusting device of compressor driving mechanism

Publications (1)

Publication Number Publication Date
CN112737210A true CN112737210A (en) 2021-04-30

Family

ID=75616010

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011559425.8A Withdrawn CN112737210A (en) 2020-12-25 2020-12-25 Rotating speed adjusting device of compressor driving mechanism

Country Status (1)

Country Link
CN (1) CN112737210A (en)

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Application publication date: 20210430

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