阅读说明：本技术 一种压缩机变容结构、压缩机、空调器和控制方法 (Compressor variable-capacity structure, compressor, air conditioner and control method ) 是由 李自好 樊峰刚 赵旭敏 彭慧明 张洪玮 于 2019-10-24 设计创作，主要内容包括：本发明提供一种压缩机变容结构、压缩机、空调器和控制方法,所述压缩机变容结构包括：第一转子和第二转子,还包括第一曲轴和第二曲轴,所述第一曲轴与所述第一转子配合以驱动所述第一转子进行压缩,所述第二曲轴与所述第二转子配合以驱动所述第二转子进行压缩；所述第二曲轴与所述第一曲轴相接、且能被所述第一曲轴带动而转动,所述第二曲轴还能与所述第一曲轴分离、以解除所述第一曲轴对所述第二曲轴的驱动,此时所述第一曲轴转动而所述第二曲轴不转动。通过本发明通过分离曲轴的结构形式实现变容,能够有效降低变容状态运行过程的能耗,降低变容结构的成本；相对于销钉滑片或单向阀等变容结构,更为简单,功耗更低,结构成本低。(The invention provides a compressor variable volume structure, a compressor, an air conditioner and a control method, wherein the compressor variable volume structure comprises: a first rotor and a second rotor, further comprising a first crankshaft and a second crankshaft, the first crankshaft cooperating with the first rotor to drive the first rotor for compression, the second crankshaft cooperating with the second rotor to drive the second rotor for compression; the second crankshaft is connected with the first crankshaft and can be driven by the first crankshaft to rotate, the second crankshaft can also be separated from the first crankshaft so as to release the driving of the first crankshaft on the second crankshaft, and at the moment, the first crankshaft rotates and the second crankshaft does not rotate. The variable capacity is realized by separating the structural form of the crankshaft, so that the energy consumption in the operation process of the variable capacity state can be effectively reduced, and the cost of the variable capacity structure is reduced; compared with variable-volume structures such as pin sliding sheets or one-way valves, the variable-volume structure is simpler, lower in power consumption and low in structural cost.)

1. A compressor variable volume structure is characterized in that: the method comprises the following steps:

a first rotor (2) and a second rotor (8), further comprising a first crankshaft (1) and a second crankshaft (6), the first crankshaft (1) cooperating with the first rotor (2) to drive the first rotor (2) for compression, the second crankshaft (6) cooperating with the second rotor (8) to drive the second rotor (8) for compression;

the second crankshaft (6) is connected with the first crankshaft (1) and can be driven by the first crankshaft (1) to rotate, the second crankshaft (6) can also be separated from the first crankshaft (1) so as to release the driving of the first crankshaft (1) on the second crankshaft (6), and at the moment, the first crankshaft (1) rotates and the second crankshaft (6) does not rotate.

2. The compressor varactor structure of claim 1, characterized in that:

a first accommodating groove (11) is formed in the end part of the first crankshaft (1) along the axis of the first crankshaft, and the second crankshaft (6) can be inserted into the first accommodating groove (11); and/or a clamping and stopping structure (5) is further arranged between the first crankshaft (1) and the second crankshaft (6), wherein the clamping and stopping structure (5) can lock the first crankshaft (1) and the second crankshaft (6) to enable the first crankshaft (1) and the second crankshaft (6) to synchronously rotate, and also can unlock the first crankshaft (1) and the second crankshaft (6) to enable the first crankshaft (1) to rotate and the second crankshaft (6) not to rotate.

3. The compressor varactor structure of claim 2, characterized in that:

the second crankshaft (6) is provided with a second groove (61), the clamping and stopping structure (5) is arranged in the second groove (61), the first crankshaft (1) is further provided with a first groove (12), the first crankshaft (1) can enable the second groove (61) to be opposite to the first groove (12) through rotation, the clamping and stopping structure (5) is partially clamped in the second groove (61) and partially clamped in the first groove (12), and therefore the first crankshaft (1) and the second crankshaft (6) are locked with each other and rotate synchronously.

4. A compressor displacement-varying structure according to claim 3, wherein:

the second groove (61) is a through hole opened from the outer peripheral surface of the second crankshaft (6) in the radial direction, forming a space for allowing the locking structure (5) to move, and/or the compressor variable capacity structure further comprises a second accommodating groove (62) extending in the axial direction inside the second crankshaft (6), and a thrust rod (4) arranged in the second accommodating groove (62), wherein the thrust rod (4) can move in the axial direction to push the locking structure (5) into the first groove (12) to form locking and release locking.

5. The compressor varactor structure of claim 4, characterized in that:

the thrust rod (4) comprises a first portion (41) and a second portion (42) which are distributed in the axial direction, the width of the first portion (41) is smaller than that of the second portion (42), the clamping structure (5) is completely accommodated in the second groove (61) when the clamping structure (5) is connected with the first portion (41), and the clamping structure (5) is pushed outwards in the radial direction when the clamping structure (5) is connected with the second portion (42) so that part of the clamping structure is clamped in the first groove (12) and part of the clamping structure is clamped in the second groove (61).

6. The compressor varactor structure of claim 5, characterized in that:

the thrust rod (4) comprises a head portion (43) and a rod portion (44), the head portion (43) comprises the first portion (41) and the second portion (42), the rod portion (44) is connected with the second portion (42), and the rod portion (44) can be pushed or pulled to enable the thrust rod (4) to move in the axial direction to enable the first portion (41) to be connected with the clamping structure (5) or the second portion (42) to be connected with the clamping structure (5).

7. The compressor varactor structure of claim 6, characterized in that:

still include trip structure (9), the one end of trip structure (9) connect in on thrust rod (4), the other end is followed the inside radial outward extension of second bent axle (6) is located radial periphery of second bent axle (6) or be close to the position of the radial periphery of second bent axle (6), and work as thrust rod (4) first portion (41) with when blocking structure (5) meet the other end of trip structure (9) support and lean on the surface department that blocks structure (5), make block structure (5) can not move radially outwards.

8. The compressor varactor structure of claim 7, wherein:

the inside of the second crankshaft (6) is further provided with a third accommodating groove (63) which is used for accommodating the movement of the clamping hook structure (9) in an extending mode along the radial direction, and the third accommodating groove (63) is further extended along the axial direction.

9. A compressor varactor structure according to claim 7 or 8, characterized in that:

the second groove (61) is also formed at a radially inner end thereof in a structure having a throat; and/or the clamping and stopping structure (5) is of a ball structure, and/or the clamping and stopping structure (9) is of a sheet metal hook and is fixedly connected with the thrust rod (4); and/or the cross section of the first groove (12) is arc-shaped; and/or, the structure (5) that stops is more than two, first groove (12) with second groove (61) also be more than two respectively, and respectively with the structure (5) one-to-one sets up that stops, trip structure (9) also be more than two, and with the structure (5) one-to-one sets up that stops.

10. A compressor varactor structure according to any one of claims 4-9, characterized in that:

the anti-collision device is characterized by further comprising a driving structure (10) arranged on one side of the thrust rod (4) far away from the clamping structure (5), wherein the driving structure (10) drives the thrust rod (4) to move in the axial direction through electromagnetic force or introduced gas pressure.

11. A compressor displacement-varying structure according to claim 10, wherein:

the driving structure (10) comprises an electromagnetic coil (101), the end (45) of the thrust rod (4) close to the driving structure is of a magnetic structure, and the electromagnetic coil (101) can be controlled to generate a magnetic pole which is the same as that of the end (45) to push the thrust rod (4) to move or can be controlled to generate a magnetic pole which is opposite to that of the end to pull the thrust rod (4) to move.

12. A compressor displacement-varying structure according to claim 10, wherein:

the driving structure (10) comprises a pneumatic push rod (102), and the pneumatic push rod (102) can introduce gas from a compression cavity of the compressor to form pressure so as to push the thrust rod (4) to move or pull the thrust rod (4) to move.

13. A compressor varactor structure according to any one of claims 4-12, characterized in that:

the thrust rod control device further comprises a sensor (103) and a controller, wherein the sensor can detect the indoor temperature and/or the rotating speed of the compressor and transmit the information of the indoor temperature and/or the rotating speed of the compressor to the controller so as to control the thrust rod.

14. A compressor, characterized by: comprising the compressor variable capacity structure of any one of claims 1-13.

15. An air conditioner, characterized in that: comprising the compressor variable volume structure of any one of claims 1-13 or the compressor of claim 14.

16. A control method of a variable capacitance structure of a compressor is characterized in that: use of a compressor variable capacity structure according to any of claims 1-13, when comprising a sensor, to control the compressor variable capacity control based on the value of the room temperature and/or the compressor speed detected by the sensor.

17. The control method according to claim 16, characterized in that:

when electromagnetic coils are included:

when the temperature and/or the compressor speed reach a preset range: controlling an electromagnetic coil (101) to generate the same magnetic pole as the end part to push the thrust rod (4) to move so as to enable the compressor to operate the variable displacement cylinder;

when the temperature and/or the rotating speed of the compressor do not reach the preset range: a control solenoid (101) produces a magnetic pole opposite the end to pull the thrust rod (4) in motion so that the compressor varactor is not operational.

18. The control method according to claim 16, characterized in that:

when a pneumatic ram (102) is included:

when the temperature and/or the compressor speed reach a preset range: controlling a pneumatic push rod (102) to introduce gas from a compression cavity of the compressor to form pressure so as to push the thrust rod (4) to move and enable a compressor to operate in a variable displacement mode;

when the temperature and/or the rotating speed of the compressor do not reach the preset range: controlling the pneumatic push rod (102) not to introduce gas from the compression chamber of the compressor without creating pressure to pull the thrust rod (4) in motion so that the compressor variable volume cylinder is not operated.

Technical Field

The invention belongs to the technical field of compressors, and particularly relates to a variable volume structure of a compressor, the compressor, an air conditioner and a control method.

Background

With the improvement of national standards of air conditioner energy efficiency, the requirement on the energy efficiency of the compressor is higher and higher. In order to adapt to the change of refrigeration and heating under different climatic conditions, the air conditioner has to have lower refrigerating capacity under a light working condition and larger refrigerating capacity under a heavy working condition. In order to solve the problem, variable-capacity compressors have been developed, namely the compressor operates in double cylinders when large cooling capacity is needed and operates in single cylinder when small cooling capacity is needed, and the process is called as the variable capacity of the compressor. However, the control modes of the variable capacity are different, some adopt a one-way valve to control whether the air suction of one air cylinder is used for controlling whether the air cylinder works, and some adopt a mode of a pin clamping a sliding sheet to control the following performance of the sliding sheet so as to achieve the purpose of variable capacity. However, both of these approaches require significant changes from the system piping and control logic, resulting in increased overall costs.

The variable-capacity compressor in the prior art has the technical problems that the variable-capacity structure is complex, the energy consumption is high due to the fact that the cylinder body in the variable-capacity state rotates all the time, and the like, so that the variable-capacity structure of the compressor, the air conditioner and the control method are researched and designed.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects of high energy consumption and complex structure of the compressor caused by that the cylinder body of the variable-capacity compressor in the prior art always keeps rotating in the variable-capacity state operation, thereby providing the variable-capacity structure of the compressor, the air conditioner and the control method.

The invention provides a compressor variable volume structure, comprising:

a first rotor and a second rotor, further comprising a first crankshaft and a second crankshaft, the first crankshaft cooperating with the first rotor to drive the first rotor for compression, the second crankshaft cooperating with the second rotor to drive the second rotor for compression;

the second crankshaft is connected with the first crankshaft and can be driven by the first crankshaft to rotate, the second crankshaft can also be separated from the first crankshaft so as to release the driving of the first crankshaft on the second crankshaft, and at the moment, the first crankshaft rotates and the second crankshaft does not rotate.

Preferably, the first and second electrodes are formed of a metal,

a first accommodating groove is formed in the end part of the first crankshaft along the axis of the first crankshaft, and the second crankshaft can be inserted into the first accommodating groove; and/or a clamping and stopping structure is further arranged between the first crankshaft and the second crankshaft, and the clamping and stopping structure can lock the first crankshaft and the second crankshaft to enable the first crankshaft and the second crankshaft to synchronously rotate and also can unlock the first crankshaft and the second crankshaft to enable the first crankshaft to rotate and the second crankshaft not to rotate.

Preferably, the first and second electrodes are formed of a metal,

the second crankshaft is provided with a second groove, the clamping and stopping structure is arranged in the second groove, the first crankshaft is further provided with the first groove, the second groove and the first groove can be opposite to each other through the first crankshaft through rotation, the clamping and stopping structure is partially clamped in the first groove and partially clamped in the second groove, and therefore the first crankshaft and the second crankshaft are mutually locked and rotate synchronously.

Preferably, the first and second electrodes are formed of a metal,

the second groove is a through hole which is arranged from the outer peripheral surface of the second crankshaft in the radial direction and forms a space for allowing the clamping structure to move, and/or the compressor variable volume structure further comprises a second accommodating groove which extends in the second crankshaft along the axial direction and a thrust rod which is arranged in the second accommodating groove and can move along the axial direction to push the clamping structure to enter the first groove, form clamping and release clamping.

Preferably, the first and second electrodes are formed of a metal,

the thrust rod comprises a first portion and a second portion which are distributed in the axial direction, the width of the first portion is smaller than that of the second portion, the clamping structure is completely contained in the second groove when the clamping structure is connected with the first portion, and the clamping structure is pushed outwards in the radial direction when the clamping structure is connected with the second portion, so that part of the clamping structure is clamped in the first groove, and part of the clamping structure is clamped in the second groove.

Preferably, the first and second electrodes are formed of a metal,

the thrust rod comprises a head part and a rod part, the head part comprises the first part and the second part, the rod part is connected with the second part, and the rod part can be pushed or pulled to enable the thrust rod to move in the axial direction to enable the first part to be connected with the clamping structure or enable the second part to be connected with the clamping structure.

Preferably, the first and second electrodes are formed of a metal,

still include the trip structure, the one end of trip structure connect in on the thrust rod, the other end is followed the inside outside radial extension of second bent axle is to being located the radial periphery of second bent axle or being close to the position of the radial periphery of second bent axle, and work as the thrust rod first portion with when the structure meets is blocked to the other end of trip structure support and lean on the surface department that blocks the structure, make block the structure can not move outwards radially.

Preferably, the first and second electrodes are formed of a metal,

the inside of second bent axle still along radially extending to offer hold the third holding tank of trip structure motion, just the third holding tank still extends along axial direction.

Preferably, the first and second electrodes are formed of a metal,

the second groove is also formed at a radially inner end thereof in a structure having a throat; and/or the clamping structure is a ball structure, and/or the clamping hook structure is a sheet metal hook and is fixedly connected with the thrust rod; and/or the cross section of the first groove is arc-shaped; and/or, the structure that stops is more than two, first groove with the second groove also respectively more than two, and respectively with the structure one-to-one that stops sets up, the trip structure also more than two, and with the structure one-to-one that stops sets up.

Preferably, the first and second electrodes are formed of a metal,

the driving structure is arranged on one side of the thrust rod, which is far away from the clamping structure, and the driving structure drives the thrust rod to move in the axial direction through electromagnetic force or introduced gas pressure.

Preferably, the first and second electrodes are formed of a metal,

the driving structure comprises an electromagnetic coil, the end part of the thrust rod, close to the driving structure, is of a magnetic structure, and the electromagnetic coil can be controlled to generate a magnetic pole which is the same as that of the end part to push the thrust rod to move or can be controlled to generate a magnetic pole which is opposite to that of the end part to pull the thrust rod to move.

Preferably, the first and second electrodes are formed of a metal,

the driving structure comprises a pneumatic push rod, and the pneumatic push rod can introduce gas from a compression cavity of the compressor to form pressure so as to push the thrust rod to move or pull the thrust rod to move.

Preferably, the first and second electrodes are formed of a metal,

the thrust rod control device further comprises a sensor, wherein the sensor can detect indoor temperature and/or compressor rotating speed and transmit information of the indoor temperature and/or the compressor rotating speed to the controller so as to control the thrust rod.

The invention also provides a compressor comprising the air inlet structure.

The invention also provides an air conditioner, which comprises the compressor variable volume structure or the compressor.

The invention also provides a control method of the compressor variable volume structure, which uses the compressor variable volume structure, and when the compressor variable volume structure comprises the sensor, the compressor is controlled to perform variable volume control operation according to the indoor temperature and/or the value of the rotating speed of the compressor detected by the sensor.

Preferably, the first and second electrodes are formed of a metal,

when including the solenoid, the thrust rod and the end:

when the temperature and/or the compressor speed reach a preset range: the electromagnetic coil is controlled to generate the same magnetic pole as the end part to push the thrust rod to move so as to enable the variable displacement cylinder of the compressor to operate;

when the temperature and/or the rotating speed of the compressor do not reach the preset range: a control solenoid produces a magnetic pole opposite the end to pull the thrust rod in motion so that the compressor varactor is not operational.

Preferably, the first and second electrodes are formed of a metal,

when including pneumatic push rod and thrust rod:

when the temperature and/or the compressor speed reach a preset range: controlling a pneumatic push rod to introduce gas from a compression cavity of the compressor to form pressure so as to push the thrust rod to move and enable a compressor variable-capacity cylinder to operate;

when the temperature and/or the rotating speed of the compressor do not reach the preset range: and controlling the pneumatic push rod not to introduce gas from a compression cavity of the compressor without forming pressure so as to pull the thrust rod to move and enable the compressor variable-capacity cylinder not to operate.

The variable volume structure of the compressor, the air conditioner and the control method provided by the invention have the following beneficial effects:

according to the invention, the crankshaft is set to be in a form of comprising two or more crankshafts, the second crankshaft is connected with the first crankshaft and can be driven by the first crankshaft to rotate, the second crankshaft can be separated from the first crankshaft to remove the drive of the first crankshaft on the second crankshaft, and at the moment, the first crankshaft rotates and the second crankshaft does not rotate, so that the second crankshaft can be separated from the first crankshaft when the variable-volume state is operated; the variable-capacity control device realizes variable capacity through a structural form of the separated crankshaft, and has simpler structure, lower power consumption and low structural cost compared with variable-capacity control structures such as a pin sliding vane or a one-way valve and the like.

Drawings

FIG. 1 is a cross-sectional view of the variable capacity compressor of the present invention in a variable capacity state (variable capacity rotor not rotating);

FIG. 2 is a top cross-sectional view of the variable capacity compressor of FIG. 1 of the present invention in a detent configuration;

FIG. 3 is a cross-sectional view of the variable capacity compressor of the present invention in its normal state (variable capacity rotor rotation);

FIG. 4 is a top cross-sectional view of the variable capacity compressor of FIG. 3 of the present invention in a detent configuration;

FIG. 5 is a longitudinal cross-sectional side view of FIG. 1 at the stop feature;

FIG. 6 is a longitudinal cross-sectional side view of FIG. 3 at the stop feature;

fig. 7 is a structural view of a first variable capacity control method of the variable capacity compressor of the present invention;

fig. 8 is a partially enlarged view of a portion a in fig. 7;

fig. 9 is a structural view of a first variable capacity control method of the variable capacity compressor of the present invention;

fig. 10 is a partially enlarged view of a portion B in fig. 9.

The reference numbers in the figures denote:

1. a first crankshaft; 11. a first accommodating groove; 12. a first groove; 2. a first rotor; 3. an upper cylinder; 4. A thrust rod; 41. a first part; 42. a second section; 43. a head portion; 44. a rod portion; 45. an end portion; 5. a locking structure; 6. a second crankshaft; 61. a second groove; 62. a second accommodating groove; 63. a third accommodating groove; 7. a lower cylinder; 8. a second rotor; 9. a hook structure; 10. a drive structure; 101. an electromagnetic coil; 102. a pneumatic push rod; 103. a sensor.

Detailed Description

As shown in fig. 1 to 10, the present invention provides a variable capacity structure of a compressor, which includes:

a first rotor 2 and a second rotor 8, further comprising a first crankshaft 1 and a second crankshaft 6, said first crankshaft 1 cooperating with said first rotor 2 to drive said first rotor 2 for compression, said second crankshaft 6 cooperating with said second rotor 8 to drive said second rotor 8 for compression;

the second crankshaft 6 is connected to the first crankshaft 1 and can be rotated by the first crankshaft 1, and the second crankshaft 6 can be separated from the first crankshaft 1 to release the drive of the second crankshaft 6 by the first crankshaft 1, and at this time, the first crankshaft 1 rotates and the second crankshaft 6 does not rotate.

According to the invention, the crankshaft is set to be in a form of comprising two or more crankshafts, the second crankshaft is connected with the first crankshaft and can be driven by the first crankshaft to rotate, the second crankshaft can be separated from the first crankshaft to remove the drive of the first crankshaft on the second crankshaft, and at the moment, the first crankshaft rotates and the second crankshaft does not rotate, so that the second crankshaft can be separated from the first crankshaft when the variable-volume state is operated; the variable-capacity control device realizes variable capacity through a structural form of the separated crankshaft, and has simpler structure, lower power consumption and low structural cost compared with variable-capacity control structures such as a pin sliding vane or a one-way valve and the like.

In order to solve the problem that the compressor can operate under different working conditions in different environments so as to achieve the purposes of energy conservation and emission reduction, variable-capacity compressors have been developed, namely a double-cylinder compressor operates when large cooling capacity is needed and a single-cylinder compressor operates when small cooling capacity is needed, and the process is called as the variable capacity of the compressor. However, the control modes of the variable capacity are different, some adopt a one-way valve to control whether the air suction of one air cylinder is used for controlling whether the air cylinder works, and some adopt a mode of a pin clamping a sliding sheet to control the following performance of the sliding sheet so as to achieve the purpose of variable capacity. However, both of these approaches require significant changes from the system piping and control logic, resulting in increased overall costs.

The invention comprises the following steps: firstly, the upper crankshaft and the lower crankshaft are connected and separated by using a steel ball, so that whether a lower cylinder works or not is controlled, and the variable-capacity structure is an innovation; and secondly, the variable capacitance is realized by pushing and pulling the thrust rod, and the variable capacitance mode is simpler.

The structure of the invention is an innovation of a double-cylinder or multi-cylinder variable-capacity structure and an innovation of a variable-capacity mode; the variable volume structure directly stops one cylinder body from running, thereby achieving the effect of saving more energy; the complexity of controlling the variable capacitance is solved, the variable capacitance structure and the logic are simple, the variable capacitance control mode is simpler, and the cost is reduced.

Preferably, the first and second electrodes are formed of a metal,

a first accommodating groove 11 is formed in the end part of the first crankshaft 1 along the axis of the first crankshaft, and the second crankshaft 6 can be inserted into the first accommodating groove 11; and/or a clamping and stopping structure 5 is further arranged between the first crankshaft 1 and the second crankshaft 6, wherein the clamping and stopping structure 5 can lock the first crankshaft 1 and the second crankshaft 6 to enable the first crankshaft 1 and the second crankshaft 6 to synchronously rotate, and can also unlock the first crankshaft 1 and the second crankshaft 6 to enable the first crankshaft 1 to rotate but not enable the second crankshaft 6 to rotate. The first crankshaft is a preferable structure form of the first crankshaft, the first accommodating groove can accommodate the second crankshaft to be inserted and can form clamping connection with the second crankshaft, and the first crankshaft can normally operate, is separated from the second crankshaft and operates in a variable capacity mode; through the setting that stops the structure can form between two bent axles and stop (locking), realize synchronous operation, accomplish two and two above jar normal operating and remove to stop (locking), realize that the varactor jar does not operate, accomplish the varactor operation to effectively realize varactor control's effect.

Preferably, the first and second electrodes are formed of a metal,

the second crankshaft 6 has a second groove 61, the stop structure 5 is disposed in the second groove 61, the first crankshaft 1 further has the first groove 12, and the first crankshaft 1 is rotated such that the second groove 61 is opposite to the first groove 12, so that the stop structure 5 is partially engaged in the second groove 61 and partially engaged in the first groove 12, thereby the first crankshaft 1 and the second crankshaft 6 are locked with each other and rotated synchronously. The second crankshaft is a preferable structural form of the second crankshaft, the clamping structure can be arranged in the second groove through the arrangement of the second groove and the structural arrangement of the first groove of the first crankshaft, the clamping structure is clamped in the first groove and the second groove simultaneously when normal compression (compression of each cylinder) needs to be operated, the clamping structure is only arranged in the second groove and does not enter the first groove when compression of the variable-capacity cylinder does not need to be operated, mutual assembly and disassembly effects of the two crankshafts can be achieved through the clamping structure and the two groove structures matched with each other, and accurate control of variable capacity is completed.

Preferably, the first and second electrodes are formed of a metal,

the second groove 61 is a through hole opened from the outer circumferential surface of the second crankshaft 6 in the radial direction, forming a space for allowing the movement of the locking structure 5, and/or the compressor variable capacity structure further includes a second receiving groove 62 extending in the axial direction inside the second crankshaft 6, and a thrust rod 4 provided in the second receiving groove 62, the thrust rod 4 being capable of moving in the axial direction to push the locking structure 5 into the first groove 12, forming locking and releasing locking. The second groove is a through hole which penetrates through the second crankshaft in the radial direction, the through hole is a preferable structural form and an embodiment, the through hole can be opposite to the first groove on the radial outer side of the second groove so that the clamping and stopping structural part is clamped in the first groove and partially clamped in the second groove, the second accommodating groove and the thrust rod can effectively form the action of driving movement on the clamping and stopping structure, and when the variable-volume control is needed, the clamping and stopping structure can be clamped in the first groove and the second groove simultaneously by controlling the axial movement of the thrust rod so as to realize the variable-volume cylinder operation or only be clamped in the variable-volume state in the second groove (the variable-volume cylinder does not operate).

Preferably, the first and second electrodes are formed of a metal,

the thrust rod 4 includes a first portion 41 and a second portion 42 distributed in the axial direction, the width of the first portion 41 is smaller than the width of the second portion 42, the latching structure 5 is completely accommodated in the second groove 61 when the latching structure 5 is connected to the first portion 41, and the latching structure 5 is pushed outward in the radial direction when the latching structure 5 is connected to the second portion 42, so that a part of the latching structure is latched in the first groove 12 and a part of the latching structure is latched in the second groove 61. In a preferred configuration of the thrust rod of the present invention, the first and second crankshafts are rotated in synchronism with each other by the first and second portions having different widths and further by the locking structure being partially engaged with the first groove and partially engaged with the second groove when the second portion having a larger width is opposed to the locking structure, and the locking structure is retracted into the second groove when the first portion having a smaller width is opposed to the locking structure, and the locking between the first and second crankshafts is released so that the second crankshaft is not rotated.

Preferably, the first and second electrodes are formed of a metal,

the thrust rod 4 comprises a head portion 43 and a rod portion 44, the head portion 43 comprises the first portion 41 and the second portion 42, the rod portion 44 is connected with the second portion 42, and the rod portion 44 can be pushed or pulled to move the thrust rod 4 in the axial direction to connect the first portion 41 with the locking structure 5 or connect the second portion 42 with the locking structure 5. The thrust rod of the present invention has a further preferred structure, the head includes a first portion and a second portion for connecting with the locking structure to push the locking structure to move or not, and one end of the rod is connected with the head and the other end is driven by the driving structure to move up and down.

Preferably, the first and second electrodes are formed of a metal,

still include trip structure 9, the one end of trip structure 9 connect in on the thrust rod 4, the other end is followed the inside radial outward extension of second bent axle 6 extends to being located the radial periphery of second bent axle 6 or being close to the position of the radial periphery of second bent axle 6, and works as the thrust rod 4 first portion 41 with when the structure 5 meets is blocked to the other end of trip structure 9 support and lean on the surface department that blocks the structure 5, make the structure 5 of blocking can not move radially outwards. The clamping hook structure can hook the radial outer side of the clamping structure when the clamping structure needs to retract into the second groove to control the variable-volume cylinder not to operate, so that a limiting effect is formed, the clamping structure is prevented from falling into the first groove when being in a free state, and misoperation is avoided.

Preferably, the first and second electrodes are formed of a metal,

the inside of the second crankshaft 6 is further provided with a third accommodating groove 63 which is extended along the radial direction and used for accommodating the movement of the hook structure 9, and the third accommodating groove 63 is further extended along the axial direction. The second crankshaft is a preferable structural form of the second crankshaft, and the third accommodating groove is arranged to accommodate the hook structure to move up and down, so that the clamping structure is limited in a variable-volume state (namely when the clamping structure is not clamped in the first groove), and the clamping structure is prevented from falling into the first groove to influence the operation of the variable-volume state.

Preferably, the first and second electrodes are formed of a metal,

the second groove 61 is also formed at its radially inner end in a structure having a throat; and/or the clamping structure 5 is a ball structure, and/or the clamping hook structure 9 is a sheet metal hook and is fixedly connected (preferably welded) with the thrust rod 4; and/or the cross section of the first groove 12 is arc-shaped; and/or, the structure 5 that stops is more than two, first groove 12 with second groove 61 also respectively more than two, and respectively with the structure 5 one-to-one sets up that stops, trip structure 9 also more than two, and with the structure 5 one-to-one sets up that stops. The second groove is a preferable structural form of the second groove, and the necking structure is arranged at the radial inner end of the second groove, so that the clamping structure can be effectively prevented from falling into the second accommodating groove of the second crankshaft from the radial inner side, and the normal operation of the clamping structure is influenced; the clamping hook structure is in a sheet metal hook form, so that a hook force can be effectively formed to limit the clamping structure; the section of the first groove is of an arc structure, so that the first groove can be conveniently matched and clamped with a spherical clamping structure; the clamping structure, the first groove, the second groove and the clamping hook structure are multiple, limiting effect can be achieved between the first crankshaft and the second crankshaft from multiple positions, execution precision of variable-capacitance control operation is improved, and normal operation of variable-capacitance control is guaranteed.

The operation principle is as follows: the normal operation and variable volume state are to control the operation and stop of the cylinder, the invention is designed to control the operation and stop of the lower cylinder, firstly, the thrust rod is controlled to move back and forth from the original position (figure 1 position) and the pushing position (figure 3 position), when the thrust rod is at the original position, the small ball is in a free state (because the hole on the upper crankshaft is a circular hole with the diameter of 1/4, the free state can not be clamped between the two crankshafts), at the moment, the upper crankshaft and the lower crankshaft are separated from each other, because the upper crankshaft is rotated by the motor, the upper crankshaft is always kept in a motion state, the lower crankshaft is rotated by the upper crankshaft, all the lower crankshafts are in a stop state, therefore, the lower cylinder is also in a stop motion state, and at the moment, one cylinder moves, and is in. When the thrust rod is pushed forwards (as the position shown in figure 3), the small ball is pushed into the hole of the upper crankshaft by the thrust rod and is clamped between the two crankshafts, the crankshafts are in a linkage state, the upper cylinder and the lower cylinder run simultaneously, and the compressor belongs to a normal double-cylinder compressor.

The matching mode is as follows: the design mainly includes that two crankshafts of two lower cylinders and two upper cylinders are divided into two, the upper crankshafts are driven by a motor and belong to a main power source, the lower crankshafts are driven by the upper crankshafts, driving points are caused by radial movement of small balls, and the radial movement of the small balls is caused by axial movement of a thrust rod. Meanwhile, a long slotted hole is formed in the surface, with the small spherical hole, of the crankshaft, a sheet metal hook is welded at the top end of the thrust rod, the sheet metal hook moves up and down along with the thrust rod, and the front section of the sheet metal hook slides up and down in the long slot.

Introduction of an operation mode: when the thrust rod is pushed upwards, the small ball is pushed into the space between the upper crankshaft and the lower crankshaft by the thrust rod in the radial direction, the upper crankshaft belongs to a power source, power is transmitted into the lower crankshaft to rotate by the small ball, the lower cylinder works at the moment, when the thrust rod moves downwards to an initial state, the small ball is extruded into the lower crankshaft under the force of the stressed upper crankshaft, the upper crankshaft and the lower crankshaft are disconnected at the moment, the lower crankshaft stops running, and the lower cylinder stops working, so that the capacity change is completed.

Preferably, the first and second electrodes are formed of a metal,

the thrust rod locking mechanism further comprises a driving structure 10 arranged on one side of the thrust rod 4 far away from the clamping structure 5, and the driving structure 10 drives the thrust rod 4 to move in the axial direction through electromagnetic force or introduced gas pressure. The driving structure is arranged to provide power for the movement of the stop push rod, so that the variable-volume cylinder can be controlled in a variable-volume mode according to the requirement.

Referring to fig. 7-8, preferably,

the driving structure 10 comprises an electromagnetic coil 101, the end of the thrust rod 4 close to the driving structure is a magnetic structure, and the electromagnetic coil 101 can be controlled to generate the same magnetic pole as the end to push the thrust rod 4 to move or can be controlled to generate the opposite magnetic pole to the end to pull the thrust rod 4 to move. This is one of the preferable structural forms of the driving structure of the present invention, and the electromagnetic coil is used to generate electromagnetic force to push the thrust rod to move, so as to achieve the effect of variable volume control.

Referring to fig. 9-10, preferably,

the driving structure 10 includes a pneumatic push rod 102, and the pneumatic push rod 102 can introduce gas from a compression cavity of the compressor to form pressure to push the thrust rod 4 to move or pull the thrust rod 4 to move. This is another preferable structural form of the driving structure of the present invention, and the electromagnetic coil is used for generating electromagnetic force to push the thrust rod to move, so as to achieve the effect of variable volume control.

Preferably, the first and second electrodes are formed of a metal,

the thrust rod control device further comprises a sensor 103 and a controller, wherein the sensor can detect the indoor temperature and/or the rotating speed of the compressor and transmit the information of the indoor temperature and/or the rotating speed of the compressor to the controller so as to control the thrust rod. The indoor temperature and/or the rotating speed of the compressor can be detected through the sensor, the room temperature and the rotating speed serve as conditions for controlling the compressor to perform variable volume adjustment, for example, the variable volume cylinder of the compressor can be adjusted to operate to increase the refrigerating capacity if the room temperature is not low enough, and the variable volume cylinder is started to operate to increase the refrigerating capacity if the refrigerating capacity is not low enough at the moment of low rotating speed of the compressor, so that the indoor refrigerating comfort level is met; and the controller receives the signal and controls the thrust rod to act so as to complete the variable capacitance control effect.

The invention also provides a compressor comprising the air inlet structure.

The invention also provides an air conditioner, which comprises the compressor variable volume structure or the compressor.

According to the invention, the crankshaft is set to be in a form of comprising two or more crankshafts, the second crankshaft is connected with the first crankshaft and can be driven by the first crankshaft to rotate, the second crankshaft can be separated from the first crankshaft to remove the drive of the first crankshaft on the second crankshaft, and at the moment, the first crankshaft rotates and the second crankshaft does not rotate, so that the second crankshaft can be separated from the first crankshaft when the variable-volume state is operated; the variable-capacity control device realizes variable capacity through a structural form of the separated crankshaft, and has simpler structure, lower power consumption and low structural cost compared with variable-capacity control structures such as a pin sliding vane or a one-way valve and the like.

The invention also provides a control method of the compressor variable volume structure, which uses the compressor variable volume structure, and when the compressor variable volume structure comprises the sensor, the compressor is controlled to perform variable volume control according to the indoor temperature and/or the rotating speed value of the compressor detected by the sensor.

According to the invention, the crankshaft is arranged to comprise two or more crankshafts, the motor only needs to drive one crankshaft and one rotor, only one cylinder body runs, and the variable-capacity cylinder and the rotor do not run, so that the energy consumption in the variable-capacity state running process can be effectively reduced, and the cost of the variable-capacity structure is reduced; the variable-capacity control device realizes variable capacity through a structural form of a separated crankshaft, and has simpler structure, lower power consumption and low structural cost compared with variable-capacity control structures such as a pin sliding vane or a one-way valve and the like; and the room temperature and the rotating speed are used as the conditions for controlling the compressor to perform variable volume adjustment, and the controller receives signals and controls the thrust rod to act to complete the variable volume control effect, so that the indoor refrigeration comfort level is met.

Preferably, the first and second electrodes are formed of a metal,

when electromagnetic coils are included:

when the temperature and/or the compressor speed reach a preset range: controlling the electromagnetic coil 101 to generate the same magnetic pole as the end part to push the thrust rod 4 to move so as to enable the compressor variable displacement cylinder to operate (normal state);

when the temperature and/or the rotating speed of the compressor do not reach the preset range: the solenoid 101 is controlled to produce a magnetic pole opposite to the end to pull the thrust rod 4 in motion so that the compressor displacement cylinder is not operated (displacement state).

The driving structure of the invention comprises an electromagnetic coil, and the electromagnetic coil drives the thrust rod to move to control whether the two crankshafts are blocked or not, thereby controlling whether the variable-capacity cylinder works or not.

The first control mode is as follows:

the operation principle and the operation mode are as follows: utilize the nature of electro-magnet and the physical property of magnetism, the electro-magnet can change the N utmost point and the S utmost point at magnet both ends according to the direction that changes the electric current, changes the electric current and is controlled by sensor A, makes the one end that is close to the permanent magnet have opposite magnetic pole with the permanent magnet when needs varactor, and the push rod is drawn downwards this moment, realizes the varactor. When the volume-variable state is not needed, one end of the permanent magnet close to the permanent magnet has the same magnetic pole with the permanent magnet, at the moment, the two magnets repel each other, the thrust rod pushes forwards, and the volume-variable state stops. The sensor detects content for compressor rotational speed and indoor temperature, reaches change current direction in the certain limit and realizes the varactor when rotational speed and temperature, for example the temperature is close to preset temperature, and the rotational speed is low excessively simultaneously, can realize the varactor this moment.

The matching mode is as follows: the electromagnet is fixed on the lower cover of the compressor in a welding mode, and in order to ensure the working reliability, the electromagnet needs to be sealed externally and can be made of epoxy resin. The tail end of the thrust rod needs to be fixed with a permanent magnet, and attention needs to be paid to the distance between the permanent magnet and the upper end of the electromagnet, namely the distance of the thrust rod when the displacement is achieved. The power supply and the sensor are arranged at the outer end of the compressor.

Preferably, the first and second electrodes are formed of a metal,

when a pneumatic push rod 102 is included:

when the temperature and/or the compressor speed reach a preset range: controlling a pneumatic push rod 102 to introduce gas from a compression cavity of the compressor to form pressure so as to push the thrust rod 4 to move and enable a compressor variable-capacity cylinder to operate (normal state);

when the temperature and/or the rotating speed of the compressor do not reach the preset range: the control pneumatic push rod 102 does not introduce gas from the compression chamber of the compressor and does not build pressure to pull the thrust rod 4 in motion so that the compressor displacement cylinder is not operated (displacement-changing state).

The driving structure of the invention comprises an electromagnetic coil, and the electromagnetic coil drives the thrust rod to move to control whether the two crankshafts are blocked or not, thereby controlling whether the variable-capacity cylinder works or not.

The second control mode is as follows:

the operation principle and the operation mode are as follows: the high-pressure gas in the compressor is utilized to provide power (because the compressor only needs transfiguration during operation) to act on the thrust rod with variable capacity and pneumatically push the thrust rod, the thrust rod directly acts on the thrust rod with variable capacity, the pneumatic thrust rod is externally connected with a sensor B, the sensor controls the airflow direction in the pneumatic push rod to realize the propulsion or the drawing, the pneumatic push rod draws the thrust rod 4 with variable capacity when the variable capacity is needed, and the pneumatic push rod forwards propels when the variable capacity is finished. It should be noted that the stroke of the pneumatic push rod needs to be the same as the pull-up distance of the positive-displacement thrust rod to reach the positive-displacement state. The sensor is externally connected, and the sensing mode is the same as the first control mode.

The control mode is matched as follows: the pneumatic push rod is fixed in compressor lower cover lower extreme, in order to guarantee compressor leakproofness, the push rod terminal surface need with the cooperation of lower cover face, by welding sealing connection. Because the pneumatic push rod utilizes high-pressure gas in the compressor, the air intake of the pneumatic push rod can be led into the upper end of the motor of the compressor through an internal placing pipeline or an external pipeline.

Fig. 1 shows the variable capacity state of the compressor, in which the thrust rod 4 is in the original position, without the stop structure 5 (i.e. the ball) connecting the first crankshaft 1 and the second crankshaft 6, in which the upper cylinder is operating and the lower cylinder is stopped;

fig. 2 is a cross-sectional view of fig. 1 at a small ball, showing the operation states of the upper crankshaft and the lower crankshaft in the capacity-variable state, at which the upper crankshaft is rotated by the motor and the lower crankshaft cannot be rotated.

Fig. 3 shows the compressor in normal state, at this time, the thrust rod 4 pushes upwards to push the small ball into the hole of the upper crankshaft, at this time, the small ball connects the upper crankshaft and the lower crankshaft, the motor drives the upper crankshaft and the lower crankshaft to operate simultaneously, the two cylinders move simultaneously, and the compressor belongs to a normal state double-cylinder compressor.

Fig. 4 is a cross-sectional view of the ball of fig. 3, showing the upper and lower crankshafts in an operating state when the ball is connected in a normal state. At the moment, the small balls enter the holes of the upper crankshafts, and the two crankshafts are connected and move far at the same time.

FIG. 5 is a left side view of FIG. 1 showing a metal plate hook state for restraining movement of a ball in a variable volume state

FIG. 6 is a left side view of FIG. 3 showing a sheet metal hook state restraining movement of a ball in a normal state

Fig. 7 and 8 show a first variable displacement control method, and fig. 8 is an enlarged view of the control structure of fig. 7. The control is realized mainly by utilizing an electromagnetic induction mode, a permanent magnet is fixed at the tail end of the thrust rod, an electromagnet is fixed on a lower cover of the compressor, the current direction of a direct current power supply is changed through the control of a sensor A to control the N, S poles close to one end of the permanent magnet on the lower cover, and therefore the repulsion or the attraction of the two magnets is controlled to push and pull the thrust rod, and the variable capacitance purpose is achieved.

Fig. 9 and 10 show a second variable capacitance control method, and fig. 10 is an enlarged view of the control structure of fig. 9. The high-pressure gas in the shell is used for providing power for the pneumatic push rod, and the sensor 103 is used for controlling the pneumatic push rod, so that the push-pull of the thrust rod is controlled, and the variable capacity purpose is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, 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 invention, and these modifications and variations should also be regarded as the protection scope of the present invention.