CN112576501B

CN112576501B - Compressor and air conditioner

Info

Publication number: CN112576501B
Application number: CN202011410039.2A
Authority: CN
Inventors: 魏会军; 余世顺; 刘雷; 马英超; 刁小东
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2023-01-06
Anticipated expiration: 2040-12-03
Also published as: CN112576501A

Abstract

The invention provides a compressor and an air conditioner, wherein the compressor comprises a static disc, a movable disc and an upper support, a compression cavity is formed between the static disc and the movable disc, the upper support is used for supporting the movable disc, a first elastic part is arranged between the static disc and the upper support or in the upper support, and when the compressor is started, the first elastic part can jack the static disc, so that the lower end of the static disc is not contacted with the upper end of a base plate of the movable disc; after the compressor is started, the static disc can move along the axial direction to extrude the first elastic part, so that the lower end of the static disc is gradually contacted with the upper end of the base plate of the movable disc to form a closed compression cavity. According to this disclosure can make quiet dish lower extreme not with the movable disk contact, avoided quiet dish to exert force to the movable disk to through with quiet dish and movable disk separation, the compressor starts the gas pressure that has reduced the compression intracavity in earlier stage, solved between compressor start initial stage movable disk and the upper bracket atress too big, and lead to this position oil film to break, influence the performance scheduling problem of compressor.

Description

Compressor and air conditioner

Technical Field

The disclosure relates to the technical field of compressors, in particular to a compressor and an air conditioner.

Background

The scroll compressor has the advantages of simple structure, small volume, light weight, low noise, high mechanical efficiency, stable operation and the like. For the scroll compressor with the static disc capable of floating axially, namely the compressor with axial flexibility, the static disc compresses the movable disc under the action of pressure in the backpressure cavity in work so as to prevent the movable disc from overturning. The initial starting load of the fixed-frequency compressor is overlarge, so that the stress between the movable plate of the compressor and the upper bracket is overlarge, the oil film at the position can be broken, the metal contact friction is generated, and the performance and the reliability of the compressor are influenced.

Because the initial starting load of the scroll compressor in the prior art is too large, the stress between the movable plate of the compressor and the upper bracket is too large, and the oil film at the position can be broken, the metal contact friction is generated, and the performance and the reliability of the compressor are affected, and the like, the compressor and the air conditioner are researched and designed according to the disclosure.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

Therefore, the technical problem to be solved by the present disclosure is to overcome the defects that the initial starting load of the scroll compressor in the prior art is too large, so that the stress between the movable plate of the compressor and the upper bracket is too large, which may cause the oil film at the position to break, and the metal contact friction occurs, thereby affecting the performance and reliability of the compressor, thereby providing a compressor and an air conditioner.

In order to solve the above problem, the present disclosure provides a compressor, including:

the compressor comprises a static disc, a movable disc and an upper support, wherein a compression cavity is formed between the static disc and the movable disc, the upper support is used for supporting the movable disc, a first elastic component is further arranged between the static disc and the upper support or in the upper support, and when the compressor is started, the first elastic component can jack up the static disc so that the lower end of the static disc is not in contact with the upper end of a base plate of the movable disc; after the compressor is started, the static disc can move along the axial direction to press the first elastic component, so that the lower end of the static disc is gradually contacted with the upper end of the base plate of the movable disc to form the closed compression cavity.

In some embodiments, the first elastic member is disposed between a lower end of the stationary disc and an upper end of the upper bracket, the upper end of the first elastic member is in contact with the lower end of the stationary disc, and the lower end of the first elastic member is in contact with the upper end of the upper bracket;

and when the compressor starts, the height of the upper end of the first elastic component is higher than that of the upper end of the base plate of the movable disc, and after the compressor starts, the fixed disc can move along the axial direction to extrude the elastic component, so that the height of the upper end of the elastic component is gradually reduced.

In some embodiments, the first elastic member is an annular structure having a central hole, and the stationary disc is provided with a first axial hole along an axial direction, the first axial hole being opposite to the central hole of the annular structure; the compressor further comprises a guide member simultaneously inserted through the first axial hole and the central hole.

In some embodiments, the upper bracket is provided with a second axial hole along the axial direction, the second axial hole is arranged opposite to the first axial hole, and the lower end of the guide member further extends into the second axial hole.

In some embodiments, the guide member is a cylindrical structure, the first elastic member is a circular ring structure, and the first axial hole and the second axial hole are both cylindrical holes; and/or the presence of a gas in the gas,

the guide component is in interference fit with the first axial hole in the static disc; the guide component is in clearance fit with the second axial hole.

In some embodiments, the first resilient member is disposed inside the upper bracket:

the compressor also comprises a guide component, wherein the guide component simultaneously penetrates through the first axial hole and the second axial hole;

the first elastic component is arranged in the second axial hole, one end of the first elastic component is connected with the end part of the guide component, and the other end of the first elastic component is connected with the groove bottom of the second axial hole.

In some embodiments, the first resilient member is in the form of a spring; the guide component is in interference fit with the first axial hole, and the guide component is in clearance fit with the second axial hole; and/or the presence of a gas in the gas,

the guide part is a cylindrical structure, and the first axial hole and the second axial hole are cylindrical holes.

In some embodiments, a back pressure cavity is further arranged on one side, away from the movable disc, of the fixed disc, a medium pressure hole is further formed in the fixed disc, one end of the medium pressure hole can be communicated with the back pressure cavity, and the other end of the medium pressure hole can be communicated with the compression cavity;

the compressor still includes the governing valve, the governing valve set up in the position in middling pressure hole can be controlled when compression chamber starts the initial stage and close the middling pressure hole, the governing valve can also be in after the compressor operation time of predetermineeing, control is opened after the pressure of exhaust arrives and predetermines pressure the middling pressure hole for the back pressure chamber passes through the middling pressure hole is followed inhale in the compression chamber, and then promote the quiet dish move to with the laminating of driving disk.

In some embodiments, a control channel is further radially opened in the static disc, a vent hole is axially arranged at the center of the static disc, one end of the control channel can be communicated with the vent hole, and the other end of the control channel is communicated to the outside of the static disc, the compressor further comprises a shell arranged outside the static disc, and the shell is filled with suction gas; the regulating valve is arranged in the control channel and can be controlled to move according to the change of the magnitude relation between the exhaust pressure in the exhaust hole and the suction pressure in the shell, so that the medium pressure hole is opened or closed.

In some embodiments, the regulating valve includes a regulating valve core, an annular groove is opened on the outer peripheral surface of the regulating valve core, the regulating valve core includes a first end surface opposite to the exhaust hole and capable of introducing exhaust gas, the regulating valve core further includes a second end surface opposite to the radial outer side of the static disc and capable of introducing suction gas, and the regulating valve core is driven to move in the control channel according to the magnitude relation between the exhaust pressure borne by the first end surface and the suction pressure borne by the second end surface;

when the regulating valve core moves to the state that the annular groove is not opposite to the middle pressure hole, gas pressure is not introduced from the compression cavity to the back pressure cavity, and when the regulating valve core moves to the state that the annular groove is opposite to the middle pressure hole, gas pressure is introduced from the compression cavity to the back pressure cavity.

In some embodiments, the regulating valve further comprises a regulating valve fixing part, the regulating valve fixing part is fixedly arranged inside the control channel, a second elastic part is further arranged between the regulating valve fixing part and the regulating valve core, one end of the second elastic part is connected with the regulating valve fixing part, the other end of the second elastic part is connected with the regulating valve core, one side of the regulating valve fixing part, which is far away from the regulating valve core, is communicated with the air suction in the shell, and a drainage channel is further arranged inside the regulating valve fixing part and can guide the air suction into the second end face of the regulating valve core.

In some embodiments, a protruding structure is disposed on a side of the regulating valve fixing portion opposite to the regulating valve core, a groove structure is disposed on a side of the regulating valve core opposite to the regulating valve fixing portion, the protruding structure can be inserted into the groove structure to perform a relative reciprocating motion, so that the regulating valve core moves relative to the regulating valve fixing portion, the second elastic component is disposed in the groove structure, and one end of the second elastic component abuts against one end of the protruding structure, and the other end abuts against a groove bottom of the groove structure.

In some embodiments, the end surface areas of the first end surface and the second end surface are both S, the exhaust pressure borne by the first end surface is Pd, the suction pressure borne by the second end surface is Ps, the second elastic component is of a spring structure, the pre-tightening force of the spring structure is fn, and when (Pd-Ps) × S > fn exists, the regulating valve core moves in a direction away from the exhaust hole under the action of the exhaust pressure Pd until the annular groove is communicated with the medium pressure hole to open the medium pressure hole.

In some embodiments, a sealing cover is further arranged on the side of the static disc, which faces away from the movable disc, and the back pressure cavity is formed between the sealing cover and the static disc.

The present disclosure also provides an air conditioner including the compressor of any one of the preceding.

The compressor and the air conditioner have the following beneficial effects that:

1. according to the compressor, the first elastic component is arranged between the upper support and the static disc or inside the upper support, effective support can be formed on the lower end of the static disc, the lower end of the static disc is supported to be higher than the upper end of the base plate of the movable disc through the first elastic component in the initial starting stage of the compressor, the lower end of the static disc is not in contact with the movable disc, force applied to the movable disc by the static disc is avoided, leakage and blow-by (such as high-pressure blow-by to medium-pressure blow-by and medium-pressure blow-by to low-pressure) between compression cavities are generated inside a pump body in the early starting stage of the compressor through separating the static disc from the movable disc, the gas pressure in the compression cavities is reduced, and further the force applied to the upper end face of the movable disc is reduced, so that the movable disc is not pressed onto the upper support due to overlarge gas pressure in the initial starting stage of the compressor, and the problems that the oil film at the position is broken due to overlarge stress between the movable disc and the upper support in the initial starting stage of the compressor, metal contact friction occurs, and the performance and the reliability of the compressor are solved;

2. the middle pressure hole (namely the middle pressure cavity communicating hole) and the regulating valve are arranged, whether the middle pressure hole is opened or closed can be controlled under the control of the regulating valve, whether the back pressure cavity is communicated with the compression cavity is further controlled, the middle pressure hole is in a closed state in an initial state, the static disc is jacked up by the first elastic component, the regulating valve core moves after the exhaust pressure difference reaches a certain value, the middle pressure hole is communicated (or called to be opened), the static disc is attached to the movable disc under the action of the middle pressure, the compressor normally works, the pressure of the compression cavity slowly rises, the compressor has enough time to pump the refrigeration oil in the oil pool, a friction pair between the movable disc and the upper bracket is fully lubricated, and a stable oil film is formed before the pressure reaches balance; the formation of the oil film is helpful to avoid the metal contact friction between the movable disc and the upper bracket, thereby effectively reducing the friction power consumption damage, reducing the temperature rise of the friction pair and improving the performance and the reliability of the compressor.

Drawings

Fig. 1 is a schematic structural diagram of a scroll compressor according to a first embodiment of the disclosure;

FIG. 2 is an enlarged, fragmentary schematic view of a scroll compressor according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a stationary plate assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a compressor cavity with a moving plate and a static plate according to an embodiment of the disclosure;

FIG. 5a is a schematic view of a medium pressure regulator valve according to an embodiment of the present disclosure;

FIG. 5b is a schematic view of a medium pressure regulator spool according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram illustrating a closed state of a medium pressure valve according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram illustrating an open state of a medium pressure valve according to an embodiment of the present disclosure;

FIG. 8 is an enlarged partial schematic view of a second scroll compressor embodying the present disclosure;

FIG. 9 is a schematic view of a second adjusting block of the present disclosure as a cylindrical spring;

the reference numbers are given as:

100. a compression chamber; 101. a control channel; 102. an exhaust hole; 1. an upper cover; 2. a high-low pressure divider plate; 3. a sealing cover; 4. a stationary disc; 41. a stationary disc tooth bottom; 5. a movable disc; 51. a substrate; 52. the addendum of the movable disc; 53. the back of the movable plate; 6. a cross slip ring; 7. an upper bracket; 71. an upper bracket end face; 8. a crankshaft; 9. a stator assembly; 10. a rotor assembly; 11. a lower support ring; 12. a lower bracket; 13. a lower cover; 14. a lower support bearing; 15. a housing; 16. an eccentric sleeve; 17. a guide member; 18. a first elastic member; 19. an elastic washer; 20. a check valve seat; 401. a low pressure chamber; 402. a middle pressure chamber; 403. a high pressure chamber; 404. a first axial bore; 701. a second axial bore; 43. adjusting a valve; 431. a regulating valve fixing part; 4311. a raised structure; 432. a second elastic member; 433. adjusting the valve core; 434. a regulating valve sealing ring; 4331. a first end face; 4332. an annular groove; 4333. a second end face; 4334. a groove structure; 405. an exhaust pressure action channel; 406. a back pressure chamber; 407. a medium pressure hole; 408. a drainage channel.

Detailed Description

As shown in fig. 1-9, the present disclosure provides a compressor (preferably a scroll compressor) comprising:

the compressor comprises a static disc 4, a movable disc 5 and an upper bracket 7, wherein a compression cavity 100 is formed between the static disc 4 and the movable disc 5, the upper bracket 7 is used for supporting the movable disc 5, a first elastic part 18 is further arranged between the static disc 4 and the upper bracket 7 or inside the upper bracket 7, and when the compressor is started, the first elastic part 18 can jack up the static disc 4 so that the lower end of the static disc 4 is not contacted with the upper end of a base plate 51 of the movable disc 5; after the compressor is started, the static disc 4 can move along the axial direction to press the first elastic component 18, so that the lower end of the static disc 4 gradually contacts with the upper end of the base plate 51 of the movable disc 5 to form the closed compression cavity 100.

According to the invention, the damping material is added between the static disc and the upper bracket, so that the static disc is axially separated from the movable disc in an initial state, the initial load of the compressor is reduced, the problem of oil film breakage caused by overlarge stress between the movable disc and the upper bracket can be effectively solved, and the performance and reliability of the compressor are improved.

This is disclosed through the first elastomeric element of the inside setting of upper bracket between upper bracket and quiet dish or upper bracket, can form effectual support to the lower extreme of quiet dish, make the lower extreme support of quiet dish through first elastomeric element is higher than the base plate upper end of driving disk at the compressor start initial stage, make quiet dish lower extreme not contact with the driving disk, the quiet dish has been avoided exerting force to the driving disk, and through separating quiet dish and driving disk, the inside leakage and the blowby gas (if high pressure blowby to middling pressure, middling pressure blowby to low pressure) that produces between the compression chamber of pump body in compressor start earlier stage, the gas pressure in the compression chamber has been reduced, and then reduce the power of applying on the driving disk up end, thereby make can not cause the driving disk to be compressed tightly to the upper bracket because gas pressure is too big at the compressor start initial stage, and solved and forced excessively between compressor start initial stage driving disk and the upper bracket, and lead to this position oil film to break, metal contact friction appears, influence the performance and the problem of compressor.

The following is described in further detail with reference to the accompanying drawings:

as shown in fig. 1, the scroll compressor is mainly composed of a stator assembly 9, an upper bracket 7, a lower bracket 12, a stationary disc 4, a movable disc 5, a oldham ring 6, a crankshaft 8, and the like. The stator assembly 9 is fixed on the shell assembly 15 in an interference mode, and the upper support 7 is fixed on the shell assembly 15 in an interference fit and welding mode. The phase angle difference between the movable disc 5 and the static disc 4 is 180 degrees, the movable disc 5 and the static disc 4 are oppositely arranged on the upper bracket 5, the movable disc 5 moves under the driving of the crankshaft 8 and is meshed with the static disc 4 to form a series of crescent closed cavities which are mutually isolated and continuously change in volume. The sealing cover 3 is arranged on the back of the static disc 4, and the sealing cover 3 can axially float and is attached to the high-low pressure partition plate 2 to form a sealed exhaust passage in the working process of the compressor. It should be noted that the static disc 4 has axial flexibility and can axially float along the guiding component 17, the guiding component 17 is fixed on the upper bracket 7 by transition fit, but in normal operation, the static disc 4 is tightly pressed on the movable disc 5 by the axial force of the gas in the middle pressure cavity formed by the sealing cover 2 and the back surface of the static disc 4, and the movable disc 5 is tightly pressed on the upper bracket 7 by the action of the high pressure gas in the compression cavity and the acting force of the static disc 4. The high-low pressure division plate 2 and the upper cover 1 are fixed on the shell component 15 through welding, and the high-low pressure division plate 2 and the upper cover 1 form a high-pressure exhaust cavity.

When the compressor runs, the stator assembly 9 drives the crankshaft 8 to rotate, the crank section of the crankshaft 8 is provided with the radially flexible eccentric sleeve 16, the eccentric sleeve 16 drives the movable disk 5 to move, and the movable disk 5 makes translational motion around the center of the crankshaft 8 with a fixed radius under the limitation of autorotation prevention of the cross-shaped sliding ring 6. Refrigerant entering from the air suction pipe is sucked into a crescent air suction cavity formed by the movable disc 5 and the fixed disc 4, is compressed, enters a high-pressure cavity formed by the upper cover 1 and the high-low pressure partition plate 2 through the air exhaust hole of the fixed disc 2 and the check valve seat 20, and is then discharged through the air exhaust pipe.

Example 1, in some embodiments, the first elastic member 18 is disposed between the lower end of the fixed disk 4 and the upper end of the upper bracket 7, the upper end of the first elastic member 18 is connected to the lower end of the fixed disk 4, and the lower end of the first elastic member 18 is connected to the upper end of the upper bracket 7;

and when the compressor is started, the height of the upper end of the first elastic component 18 is higher than that of the upper end of the base plate 51 of the movable disc 5, and after the compressor is started, the fixed disc 4 can move along the axial direction to press the first elastic component 18, so that the height of the upper end of the first elastic component 18 is gradually reduced.

This is a preferred structure form of the first embodiment of the present disclosure, as shown in fig. 1 to 3, by disposing the first elastic member between the lower end of the static disc and the upper end of the upper bracket, the static disc can be supported by the first elastic member, and the upper end of the first elastic member is higher than the upper end of the base plate of the movable disc, so that the lower end of the static disc is in contact with the upper end of the first elastic member, the static disc is not in contact with the base plate of the movable disc when the compressor is started, the impact of the static disc on the movable disc and the impact of the movable disc on the upper bracket are effectively reduced, and due to the gap generated in the axial direction between the static disc and the movable disc, the blow-by of the gas in the compression cavity (such as blow-by from the high pressure chamber 403 to the medium pressure chamber 402 and/or blow-by the medium pressure chamber 402 to the low pressure chamber 401) can be generated, the gas pressure in the compression cavity is reduced, and the force applied to the upper end surface of the movable disc is reduced, so that the movable disc is not pressed onto the upper bracket due to the excessive gas pressure at the initial stage of the start of the compressor.

As shown in fig. 2, 3 and 4, in the first embodiment of the present invention, the guide member 17 is fitted with the first axial hole 404 of the stationary disk in an interference manner, and is inserted into the second axial hole 701 after being combined, and the guide column is in clearance fit with the upper bracket. The first elastic part 18 is an elastic damping block and is arranged between the static disc and the upper bracket, the height of the adjusting block is higher than that of the movable disc base plate, the static disc 4 floats under the action of the first elastic part 18 when the compressor is in a shutdown state, a gap delta t exists between the tooth bottom 41 of the static disc and the tooth top 52 of the movable disc, and delta t is more than or equal to 0.15mm and less than or equal to 0.25mm. At the initial stage of starting, due to the existence of the gap Δ t, the refrigerant leaks from the high-pressure chamber 403 to the intermediate-pressure chamber 402 or leaks from the intermediate-pressure chamber 402 to the low-pressure chamber 401 during the compression process, so that the pressure in the compression cavity of the compressor slowly rises, meanwhile, the regulating valve 43 is under the action of the second elastic component 432, the regulating valve core 433 is positioned at the rightmost side, the annular groove 4332 on the valve core is not communicated with the intermediate-pressure hole 407, namely, the intermediate-pressure hole 407 is in a closed state and is not the same as the back-pressure cavity 406, the back-pressure cavity 406 is in an unloaded state, and the static disc is suspended, so that the load of the back surface 53 of the motor-driven compressor disc and the end surface 71 of the upper bracket is reduced, and the load of starting the compressor is reduced. Under the action of the elastic gasket 19, the sealing cover 3 is attached to the high-low pressure separation plate 2 to realize separation of the air suction and exhaust regions, and the exhaust pressure Pd gradually rises along with the time. The exhaust pressure acts on the first end surface 4331 of the regulating valve core 433, the suction pressure Ps acts on the second end surface 4333 of the regulating valve core 433, the areas of both end surfaces are S, and the pretightening force of the second elastic component 432 is fn. When (Pd-Ps) × S > fn, the regulating valve core 433 moves to the left low-pressure side under the action of the discharge pressure Pd, the annular groove 4332 on the valve core is communicated with the medium-pressure hole 407 of the static disc, so that the internal pressure of the back pressure cavity 406 is increased, the static disc 4 moves downwards under the action of the medium-pressure cavity pressure, the first elastic component 18 is compressed and reduced, and the tooth bottom 41 of the static disc is attached to the tooth top 52 of the dynamic disc, so that the compressor can realize stable operation. Because the compressor load rises slowly, enough time is provided for the refrigeration oil in the oil pool to be pumped up, the friction pair between the back surface 53 of the movable disc and the end surface 71 of the upper bracket is fully lubricated, and the oil film with stable performance is formed before the pressure reaches the balance. The formation of the oil film is helpful to avoid the occurrence of metal contact friction between the back surface 53 of the movable disc and the end surface 71 of the upper bracket, thereby effectively reducing the damage of friction power consumption, reducing the temperature rise of the friction pair and improving the performance and the reliability of the compressor.

In some embodiments, the first elastic component 18 is an annular structure and has a central hole, and the stationary disc 4 is provided with a first axial hole 404 along the axial direction, and the first axial hole 404 is arranged opposite to the central hole of the annular structure; the compressor further comprises a guide member 17, the guide member 17 being simultaneously inserted into the first axial hole 404 and the central hole. This is the preferred structural style of this first elastic component of disclosure, is about to wear to locate in first axial hole and centre bore by the guiding component, plays effectual guide effect to the axial motion of quiet dish promptly to the annular structure of first elastic component can effectively support the effect of the lower extreme of quiet dish.

In some embodiments, a second axial hole 701 is provided in the upper bracket 7 along the axial direction, the second axial hole 701 is disposed opposite to the first axial hole 404, and the lower end of the guide member 17 further extends into the second axial hole 701. The lower end of the guide component can also extend into the second axial hole through the second axial hole formed in the upper support, so that the static disc can move along the second axial hole of the upper support along with the guide component along the axial direction.

In some embodiments, the guiding member 17 has a cylindrical structure, the first elastic member 18 has an annular structure, and the first axial hole 404 and the second axial hole 701 are cylindrical holes; and/or the presence of a gas in the gas,

the guide part 17 is in interference fit with the first axial hole 404 on the static disc 4; the guide member 17 is in clearance fit with the second axial hole 701.

This is the preferred form of construction of the guide member of the present disclosure, as well as the preferred form of construction of the first resilient member, and the preferred form of construction of the first and second axial bores, i.e. the cylindrical guide posts are inserted into the first and second axial bores, and into the annular structure, providing an effective guiding action; the guide component and the first axial hole are in interference fit, the static disc can move along with the movement of the guide component, and the guide component and the second axial hole are in clearance fit, so that the guide component can move axially in the second axial hole.

Example 2, as shown in fig. 8-9, in some embodiments, the first elastic member 18 is disposed inside the upper bracket 7:

a first axial hole 404 is formed in the static disc 4 along the axial direction, a second axial hole 701 is formed in the upper bracket 7 along the axial direction, the second axial hole 701 is arranged opposite to the first axial hole 404, the compressor further comprises a guide component 17, and the guide component 17 is simultaneously arranged in the first axial hole 404 and the second axial hole 701 in a penetrating manner;

the first elastic member 18 is provided in the second axial hole 701, and one end of the first elastic member 18 is in contact with the end of the guide member 17 and the other end is in contact with the bottom of the second axial hole 701.

As shown in fig. 2, 3, and 4, in the first embodiment of the present invention, the guide member 17 is engaged with the first axial hole 404 of the stationary disc in an interference manner, and is inserted into the second axial hole 701 after being assembled, and the guide post is in clearance fit with the upper bracket. The first elastic part 18 is an elastic damping block and is arranged between the static disc and the upper bracket, the height of the adjusting block is higher than that of the movable disc base plate, the static disc 4 floats under the action of the first elastic part 18 when the compressor is in a shutdown state, a gap delta t exists between the tooth bottom 41 of the static disc and the tooth top 52 of the movable disc, and delta t is more than or equal to 0.15mm and less than or equal to 0.25mm. At the initial stage of starting, due to the existence of the gap Δ t, the refrigerant leaks from the high-pressure chamber 403 to the intermediate-pressure chamber 402 or from the intermediate-pressure chamber 402 to the low-pressure chamber 401 during the compression process, so that the pressure in the compression cavity of the compressor slowly rises, meanwhile, the intermediate-pressure regulating valve 43 regulates the valve core 433 to be positioned at the rightmost side under the action of the second elastic component 432, the annular groove 4332 on the valve core is not communicated with the intermediate-pressure hole 407, namely, the intermediate-pressure hole 407 is in a closed state and is not the same as the back-pressure cavity 406, the back-pressure cavity 406 is in an idle state, and the static disc is suspended, so that the load of the back surface 53 of the mechanically-driven compressor disc and the end surface 71 of the upper bracket is reduced, and the load of starting the compressor is reduced. Under the action of the elastic gasket 19, the sealing cover 3 is attached to the high-low pressure partition plate 2 to realize the separation of the air suction and exhaust areas, and the exhaust pressure Pd gradually rises along with the time. The exhaust pressure acts on a first end surface 4331 of the medium pressure regulating valve core 433, the suction pressure Ps acts on a second end surface 4333 of the medium pressure regulating valve core 433, the areas of both end surfaces are S, and the pretightening force of the second elastic component 432 is fn. When (Pd-Ps) × S > fn, the medium pressure regulating valve core 433 moves to the left low pressure side under the action of the discharge pressure Pd, the annular groove 4332 on the valve core is communicated with the medium pressure hole 407 of the static disc, so that the internal pressure of the back pressure cavity 406 rises, the static disc 4 moves downwards under the action of the pressure of the medium pressure cavity, the first elastic part 18 is compressed and reduced, and the tooth bottom 41 of the static disc is attached to the tooth top 52 of the dynamic disc, so that the compressor realizes stable operation. Because the compressor load rises slowly, enough time is provided for the refrigeration oil in the oil pool to be pumped up, the friction pair between the back surface 53 of the movable disc and the end surface 71 of the upper bracket is fully lubricated, and the oil film with stable performance is formed before the pressure reaches the balance. The formation of the oil film is helpful to avoid the metal contact friction between the back surface 53 of the movable disc and the end surface 71 of the upper bracket, thereby effectively reducing the friction power consumption damage, reducing the temperature rise of the friction pair and improving the performance and the reliability of the compressor.

The second preferred structure form of the embodiment of the present disclosure is that, by arranging the first elastic component inside the upper bracket, the first elastic component can support the guide component and further the static disc, so that the lower end of the static disc does not contact with the base plate of the dynamic disc when the compressor is started, the impact of the static disc on the dynamic disc and the impact of the dynamic disc on the upper bracket are effectively reduced, and due to the gap generated in the axial direction between the static disc and the dynamic disc, the blow-by of gas in the compression cavity can be generated (for example, the blow-by from the high pressure chamber 403 to the intermediate pressure chamber 402 and/or the blow-by from the intermediate pressure chamber 402 to the low pressure chamber 401), the gas pressure in the compression cavity is reduced, and further, the force applied to the upper end face of the dynamic disc is reduced, so that the dynamic disc is not pressed onto the upper bracket due to the excessive gas pressure in the initial stage of starting of the compressor.

In some embodiments, the first resilient member 18 is in the form of a spring; the guide member 17 is in interference fit with the first axial hole 404, and the guide member 17 is in clearance fit with the second axial hole 701; and/or the presence of a gas in the atmosphere,

the guide member 17 has a cylindrical structure, and the first axial hole 404 and the second axial hole 701 are cylindrical holes.

This is the preferred form of construction of the first resilient member of the present disclosure, the spring being able to exert a substantial spring force and deform, the guide member being in interference fit with the first axial bore to enable the stationary disc to move with movement of the guide member, the guide member being in clearance fit with the second axial bore to enable axial movement of the guide member in the second axial bore.

As shown in fig. 5-7, in some embodiments, a back pressure chamber 406 is further disposed on a side of the static disc 4 facing away from the movable disc 5, a middle pressure hole 407 is further disposed inside the static disc 4, one end of the middle pressure hole 407 can communicate with the back pressure chamber 406, and the other end can communicate with the compression chamber 100;

the compressor further comprises a regulating valve 43, wherein the regulating valve 43 is arranged at the position of the middle pressure hole 407, and can control to close the middle pressure hole 407 in the initial stage of starting the compression chamber, and the regulating valve 43 can also control to open the middle pressure hole 407 after the compressor runs for a preset time and the exhaust pressure reaches a preset pressure, so that the back pressure chamber 406 sucks air from the compression chamber 100 through the middle pressure hole 407, and further pushes the static disc 4 to move to be attached to the movable disc 5.

The compressor also comprises a middle pressure hole (namely a middle pressure cavity communicating hole) and a regulating valve, wherein the middle pressure hole can be controlled to be opened or closed under the control of the regulating valve, so that the back pressure cavity is controlled to be communicated with the compression cavity, the middle pressure hole is in a closed state in an initial state, the static disc is jacked up by the first elastic component, the regulating valve core moves after the exhaust pressure difference reaches a certain value, so that the middle pressure hole is communicated (or called to be opened), the static disc is attached to the movable disc under the action of the middle pressure, the compressor normally works, so that the pressure of the compression cavity slowly rises, the compressor has enough time to pump the refrigeration oil in the oil pool, a friction pair between the movable disc and the upper bracket is fully lubricated, and a stable oil film is formed before the pressure reaches balance; the formation of the oil film is beneficial to avoiding the metal contact friction between the movable disc and the upper bracket, thereby effectively reducing the friction power consumption damage, reducing the temperature rise of the friction pair and improving the performance and the reliability of the compressor.

In some embodiments, a control channel 101 is further radially opened in the static disc 4, a vent hole 102 is axially arranged in a central position of the static disc 4, one end of the control channel 101 can be communicated with the vent hole 102, and the other end is communicated to the outside of the static disc 4, the compressor further comprises a shell 15 arranged outside the static disc 4, and the shell 15 is filled with suction gas; the control valve 43 is disposed in the control passage 101 and is controlled to move according to a change in a magnitude relation between a discharge pressure in the discharge hole 102 and a suction pressure in the casing, thereby opening the intermediate pressure hole 407 or closing the intermediate pressure hole 407. The control channel is arranged in the static disc along the radial direction, the regulating valve can be accommodated in the control channel, one end of the control channel introduces high-pressure of the exhaust port, the other end of the control channel introduces suction pressure, and the regulating valve can be driven to move according to the relation between the exhaust pressure and the suction pressure at the two ends of the regulating valve and further controlled to open or close the medium-pressure hole.

In some embodiments, the regulating valve 43 includes a regulating valve core 433, an annular groove 4332 is opened on an outer circumferential surface of the regulating valve core 433, the regulating valve core 433 includes a first end surface 4331 opposite to the exhaust hole 102 and capable of introducing exhaust gas, the regulating valve core 433 further includes a second end surface 4333 opposite to a radial outer side of the stationary disc 4 and capable of introducing suction gas, and the regulating valve core 433 is driven to move in the control channel 101 according to a magnitude relation between the exhaust pressure received by the first end surface 4331 and the suction pressure received by the second end surface 4333;

when the regulation spool 433 moves such that the annular groove 4332 is not opposed to the middle pressure hole 407, gas pressure is not introduced from the compression chamber 100 to the back pressure chamber 406, and when the regulation spool 433 moves such that the annular groove 4332 is opposed to the middle pressure hole 407, gas pressure is introduced from the compression chamber 100 to the back pressure chamber 406.

This is a further preferred form of construction of the regulating valve element of the present disclosure, on which the exhaust gas can be introduced through the first end face provided thereon, and on which the suction pressure can be introduced, and on which the second end face the suction pressure can be introduced, so that the regulating valve element can be urged by the pressure difference between the first and third end faces thereof to move the annular groove so as to oppose the medium pressure hole to effectively open the medium pressure hole, thereby introducing the gas in the compression chamber into the back pressure chamber, and urging the stationary disc to move downward, or so that the annular groove moves so as not to oppose the medium pressure hole to effectively close the medium pressure hole, so that the gas cannot be introduced into the back pressure chamber.

In some embodiments, the regulating valve 43 further includes a regulating valve fixing portion 431, the regulating valve fixing portion 431 is fixedly disposed inside the control channel 101, a second elastic component 432 is further disposed between the regulating valve fixing portion 431 and the regulating valve core 433, one end of the second elastic component 432 is connected to the regulating valve fixing portion 431, the other end of the second elastic component 432 is connected to the regulating valve core 433, one side of the regulating valve fixing portion 431, which is away from the regulating valve core 433, is communicated with the air suction inside the housing 15, a drainage channel 408 is further disposed inside the regulating valve fixing portion 431, and the drainage channel 408 can guide the air suction gas into the second end surface 4333 of the regulating valve core 433.

This is disclosed cooperatees through setting up the governing valve into the structure including governing valve fixed part and adjusting valve core, can make the governing valve fixed part be fixed in control channel, and through setting up the second elastic component between adjusting valve core and the governing valve fixed part, can make the second elastic component exert elastic restoring force to adjusting valve core, make adjusting valve core still receive the elastic restoring force of second elastic component except that the exhaust pressure that receives first terminal surface and the suction pressure that receives the second terminal surface, play and adjust its effect of predetermineeing the size of exhaust pressure according to operating condition.

In some embodiments, a protruding structure 4311 is disposed on a side of the regulating valve fixing portion 431 opposite to the regulating valve core 433, a groove structure 4334 is disposed on a side of the regulating valve core 433 opposite to the regulating valve fixing portion 431, the protruding structure 4311 can be inserted into the groove structure 4334 to perform a relative reciprocating motion, so that the regulating valve core 433 moves relative to the regulating valve fixing portion 431, the second elastic component 432 is disposed in the groove structure 4334, and one end of the second elastic component 432 abuts against one end of the protruding structure 4311, and the other end abuts against a groove bottom of the groove structure 4334. This is disclosed still through the protruding structure that sets up on the governing valve fixed part and the groove structure that sets up on the governing valve core for protruding structure can insert and do relative motion in the groove structure, and groove structure can hold second elastomeric element effectively, and protruding structure can butt second elastomeric element and produce the elastic force to the governing valve core.

In some embodiments, the end surface areas of the first end surface 4331 and the second end surface 4333 are both S, the exhaust pressure borne by the first end surface 4331 is Pd, the suction pressure borne by the second end surface 4333 is Ps, the second elastic component 432 is a spring structure, the pre-tightening force of the spring structure is fn, and when (Pd-Ps) × S > fn exists, the regulating valve element 433 moves away from the exhaust hole 102 under the action of the exhaust pressure Pd until the annular groove 4332 communicates with the medium pressure hole 407 to open the medium pressure hole 407. When the pretightening force of the spring structure is fn and (Pd-Ps) S is larger than fn, the difference between the exhaust pressure and the suction pressure (towards the left) is larger than the elastic pretightening force towards the right, so that the regulating valve core can move leftwards under the action of the difference between the pressure and the elastic force until the annular groove 4332 is communicated with the medium pressure hole, and the medium pressure hole is opened, so that the back pressure cavity introduces back pressure gas from the compression cavity to push the static disc to move downwards; on the contrary, (Pd-Ps). S < fn indicates that the difference between the exhaust pressure and the suction pressure (towards the left) is smaller than the elastic pretightening force towards the right, so that the regulating valve core can move towards the right under the action of the difference between the pressure and the elastic force until the annular groove 4332 is not communicated with the medium pressure hole and closes the medium pressure hole, so that the back pressure cavity does not introduce back pressure gas from the compression cavity and push the static disc to move downwards.

In some embodiments, a sealing cover 3 is further disposed on a side of the static disc 4 facing away from the movable disc 5, and the sealing cover 3 and the static disc 4 form the back pressure cavity 406 therebetween. This is the preferred location for the formation of the back pressure chamber of the present disclosure, i.e., between the upper end of the stationary plate and the sealing cover.

According to the compressor shell, the end portion of the compressor shell is provided with the disc-shaped structure with the annular sliding rail, and the disc, the shell and the rear cover form the closed cavity. A rolling mass block is arranged in a circular sliding rail of the disc, and the rolling mass block can freely and reciprocally roll in the sliding rail according to the shaking vibration state of the vehicle and the compressor, so that the mass tuning and vibration reduction effects are achieved, the vibration level caused by road surface vibration excitation to the horizontal compressor of the vehicle air conditioner in the running process of the vehicle can be reduced, and the long-term reliable and stable running of the compressor is ensured; pressure balance holes communicated with an inner cavity of the shell are formed in the lowest position and the highest position of the circular sliding rail of the disc, refrigerant oil in the shell of the compressor smoothly flows into a cavity formed by the disc and the rear cover through the pressure balance holes in the lowest position, a viscous damping effect is achieved on the rolling mass block, kinetic energy of the rolling mass block is converted into heat energy to be consumed, and a quick vibration reduction effect is achieved.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present disclosure, and these modifications and variations should also be regarded as the protection scope of the present disclosure.

Claims

1. A compressor, characterized by: the method comprises the following steps:

the compressor comprises a static disc (4), a movable disc (5) and an upper support (7), wherein a compression cavity (100) is formed between the static disc (4) and the movable disc (5), the upper support (7) is used for supporting the movable disc (5), a first elastic part (18) is further arranged between the static disc (4) and the upper support (7) or inside the upper support (7), and when the compressor is started, the first elastic part (18) can jack up the static disc (4) to enable the lower end of the static disc (4) not to be in contact with the upper end of a base plate (51) of the movable disc (5); after the compressor is started, the static disc (4) can move along the axial direction to press the first elastic part (18), so that the lower end of the static disc (4) is gradually contacted with the upper end of the base plate (51) of the movable disc (5) to form a closed compression cavity (100);

leakage and blow-by gas between compression cavities are generated in the pump body at the early stage of starting the compressor, so that the gas pressure in the compression cavities is reduced, and the force applied to the upper end face of the movable disc is further reduced; after the compressor is started, the static disc (4) can move along the axial direction to press the first elastic component (18), so that the height of the upper end of the first elastic component (18) is gradually reduced;

a back pressure cavity (406) is further arranged on one side, away from the movable disc (5), of the fixed disc (4), a medium pressure hole (407) is further formed in the fixed disc (4), one end of the medium pressure hole (407) can be communicated with the back pressure cavity (406), and the other end of the medium pressure hole can be communicated with the compression cavity (100);

the compressor also comprises a regulating valve (43), wherein the regulating valve (43) is arranged at the position of the middle pressure hole (407) and can control to close the middle pressure hole (407) in the initial stage of starting the compression chamber, and the regulating valve (43) can also control to open the middle pressure hole (407) after the discharge pressure reaches a preset pressure after the compressor runs for a preset time, so that a back pressure chamber (406) sucks air from the compression chamber (100) through the middle pressure hole (407) and further pushes the static disc (4) to move to be attached to the movable disc (5);

a control channel (101) is further radially arranged in the static disc (4), an exhaust hole (102) is axially arranged at the center of the static disc (4), one end of the control channel (101) can be communicated with the exhaust hole (102), the other end of the control channel is communicated to the outside of the static disc (4), the compressor further comprises a shell (15) arranged outside the static disc (4), and the shell (15) is filled with suction gas; the regulating valve (43) is arranged in the control channel (101) and can be controlled to move according to the change of the magnitude relation between the exhaust pressure in the exhaust hole (102) and the suction pressure in the shell, so as to open the medium pressure hole (407) or close the medium pressure hole (407).

2. The compressor of claim 1, wherein:

the first elastic component (18) is arranged between the lower end of the static disc (4) and the upper end of the upper bracket (7), the upper end of the first elastic component (18) is connected with the lower end of the static disc (4), and the lower end of the first elastic component (18) is connected with the upper end of the upper bracket (7);

and when the compressor is started, the height of the upper end of the first elastic component (18) is higher than that of the upper end of the base plate (51) of the movable disc (5).

3. The compressor of claim 2, wherein:

the first elastic component (18) is of an annular structure and is provided with a central hole, a first axial hole (404) is formed in the static disc (4) along the axial direction, and the first axial hole (404) is opposite to the central hole of the annular structure; the compressor further comprises a guide member (17), the guide member (17) being simultaneously inserted into the first axial hole (404) and the central hole.

4. A compressor according to claim 3, wherein:

a second axial hole (701) is formed in the upper support (7) along the axial direction, the second axial hole (701) is opposite to the first axial hole (404), and the lower end of the guide component (17) also extends into the second axial hole (701).

5. The compressor of claim 4, wherein:

the guide component (17) is of a cylindrical structure, the first elastic component (18) is of a circular ring structure, and the first axial hole (404) and the second axial hole (701) are both cylindrical holes; and/or the presence of a gas in the gas,

the guide part (17) is in interference fit with the first axial hole (404) on the static disc (4); the guide part (17) is in clearance fit with the second axial hole (701).

6. The compressor of claim 1, wherein:

the first elastic part (18) is arranged inside the upper bracket (7):

a first axial hole (404) is formed in the static disc (4) along the axial direction, a second axial hole (701) is formed in the upper support (7) along the axial direction, the second axial hole (701) is opposite to the first axial hole (404), the compressor further comprises a guide component (17), and the guide component (17) penetrates through the first axial hole (404) and the second axial hole (701) simultaneously;

the first elastic member (18) is provided in the second axial hole (701), and one end of the first elastic member (18) is in contact with the end of the guide member (17) and the other end is in contact with the bottom of the second axial hole (701).

7. The compressor of claim 6, wherein:

the first elastic component (18) is in the structural form of a spring; the guide component (17) is in interference fit with the first axial hole (404), and the guide component (17) is in clearance fit with the second axial hole (701); and/or the presence of a gas in the gas,

the guide component (17) is of a cylindrical structure, and the first axial hole (404) and the second axial hole (701) are both cylindrical holes.

8. The compressor of claim 1, wherein:

the regulating valve (43) comprises a regulating valve core (433), an annular groove (4332) is formed in the outer peripheral surface of the regulating valve core (433), the regulating valve core (433) comprises a first end surface (4331) which is opposite to the exhaust hole (102) and can introduce exhaust gas, the regulating valve core (433) further comprises a second end surface (4333) which is opposite to the radial outer side of the static disc (4) and can introduce suction gas, and the regulating valve core (433) is driven to move in the control channel (101) according to the magnitude relation between the exhaust pressure borne by the first end surface (4331) and the suction pressure borne by the second end surface (4333);

when the regulating valve core (433) moves to the position where the annular groove (4332) is not opposite to the middle pressure hole (407), gas pressure is not introduced from the compression chamber (100) to the back pressure chamber (406), and when the regulating valve core (433) moves to the position where the annular groove (4332) is opposite to the middle pressure hole (407), gas pressure is introduced from the compression chamber (100) to the back pressure chamber (406).

9. The compressor of claim 8, wherein:

the regulating valve (43) further comprises a regulating valve fixing portion (431), the regulating valve fixing portion (431) is fixedly arranged inside the control channel (101), a second elastic component (432) is further arranged between the regulating valve fixing portion (431) and the regulating valve core (433), one end of the second elastic component (432) is connected with the regulating valve fixing portion (431), the other end of the second elastic component is connected with the regulating valve core (433), one side, deviating from the regulating valve core (433), of the regulating valve fixing portion (431 is communicated with the air suction inside the shell (15), a drainage channel (408) is further arranged inside the regulating valve fixing portion (431), and the drainage channel (408) can guide air suction into the second end face (4333) of the regulating valve core (433).

10. The compressor of claim 9, wherein:

the utility model discloses an adjusting valve, including governing valve fixed part (431), governing valve fixed part (431) go up with the relative one side of governing valve core (433) is provided with protruding structure (4311), governing valve core (433) go up with the relative one side of governing valve fixed part (431) is provided with groove structure (4334), protruding structure (4311) can insert do relative reciprocating motion in groove structure (4334), make governing valve core (433) for governing valve fixed part (431) motion, second elastomeric element (432) set up in groove structure (4334), the one end of second elastomeric element (432) with the one end butt of protruding structure (4311), the other end with the tank bottom butt of groove structure (4334).

11. A compressor according to claim 9 or 10, wherein:

the end face areas of the first end face (4331) and the second end face (4333) are S, the exhaust pressure borne by the first end face (4331) is Pd, the suction pressure borne by the second end face (4333) is Ps, the second elastic component (432) is of a spring structure, the pretightening force of the spring structure is fn, and when (Pd-Ps) S is greater than fn, the regulating valve core (433) moves in the direction away from the exhaust hole (102) under the action of the exhaust pressure Pd until the annular groove (4332) is communicated with the medium pressure hole (407) to open the medium pressure hole (407).

12. The compressor according to any one of claims 1 to 10, wherein:

and a sealing cover (3) is further arranged on one side of the static disc (4) departing from the movable disc (5), and a back pressure cavity (406) is formed between the sealing cover (3) and the static disc (4).

13. An air conditioner, characterized in that:

comprising a compressor according to any one of claims 1 to 12.