Scroll compressor suitable for all refrigerants

Abstract

The invention belongs to the technical field of compressors, and discloses a scroll compressor suitable for all refrigerants, the scroll compressor comprises a shell, a compressor assembly and a driving part, the shell is provided with an air suction port and an air exhaust port, the compression assembly is located in the shell, the compression assembly comprises at least two movable scroll plates and at least two static scroll plates which are arranged in a one-to-one correspondence mode, and the driving part is located in the shell. The movable scroll plates are rotationally connected to the shell, the static scroll plates are fixedly connected to the shell, and the corresponding movable scroll plates and static scroll plates jointly form a compression cavity communicated with the air suction port and the air exhaust port; the driving piece is located in the shell and used for rotation of all the movable scroll plates. According to the scroll compressor suitable for all refrigerants, the at least two movable scroll plates and the at least two static scroll plates are arranged in the shell of the independent compressor, so that the compression efficiency is effectively guaranteed, occupied space and accessory arrangement are reduced, and the applicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a scroll compressor suitable for all refrigerants. Background Art

[0002] The scroll compressor is a compressible volume compressor composed of a fixed static scroll and an eccentrically rotating and translating movable scroll. During the suction, compression and exhaust process, the static scroll is fixed in the shell, and the movable scroll is driven and restrained by the anti-rotation mechanism, rotating in a plane with a very small radius around the center of the static scroll base circle. The gas is sucked into the periphery of the static scroll through the suction port. As the movable scroll rotates, the gas is gradually compressed in several crescent-shaped compression chambers formed by the movable scroll and the static scroll, and then discharged continuously from the exhaust port.

[0003] In the prior art, some usage scenarios require the deployment of multiple scroll compressors to work together to meet working conditions. However, if multiple compressors are deployed separately, more space will be occupied and more connecting pipes, power supplies and other accessories will be required, which will limit their use. Summary of the invention

[0004] The object of the present invention is to provide a scroll compressor suitable for all refrigerants, in which at least two movable scroll plates and a stationary scroll plate are arranged in the shell of an independent compressor, which effectively ensures the compression efficiency, reduces the space occupation and the setting of accessories, and has strong applicability.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A scroll compressor suitable for all refrigerants, comprising:

[0007] a housing having an air intake port and an air exhaust port;

[0008] A compression assembly is located in the housing, the compression assembly includes at least two orbiting scrolls and fixed scrolls arranged in a one-to-one correspondence, the orbiting scroll is rotatably connected to the housing, the fixed scroll is fixedly connected to the housing, and the corresponding orbiting scroll and fixed scroll jointly form a compression chamber connected to the suction port and the exhaust port;

[0009] A driving member is located in the housing and is used to drive all the movable scroll plates to rotate.

[0010] Preferably, the driving member comprises a through-shaft motor, the through-shaft motor comprises a motor housing and a motor shaft rotatably arranged in the motor housing, the motor housing is fixed in the outer shell, and both ends of the motor shaft pass through the motor housing;

[0011] The compression assembly includes two movable scrolls and two fixed scrolls arranged in one-to-one correspondence. The two movable scrolls are correspondingly arranged at two opposite ends of the motor shaft, and each movable scroll is connected to the corresponding end of the motor shaft.

[0012] Preferably, a sleeve is provided on a side of the movable scroll facing the motor shaft, and the movable scroll is fixedly mounted on the motor shaft through the sleeve.

[0013] Preferably, one of the motor shaft and the sleeve is provided with a key slot, and the other is correspondingly provided with a connecting key, and the connecting key is inserted into the key slot.

[0014] Preferably, a connecting shaft is provided on the side of the movable scroll facing the motor shaft, and the connecting shaft is connected to the corresponding end of the motor shaft through a coupling.

[0015] Preferably, a support bearing is provided in the housing, the motor shaft passes through the support bearing, and is rotatably connected to the housing via the support bearing.

[0016] Preferably, an electric control unit is also included, and the electric control unit is used to drive the motor shaft of the through-shaft motor to rotate.

[0017] Preferably, the number of the air intake ports is arranged in one-to-one correspondence with the number of the movable scrolls.

[0018] Preferably, the number of the exhaust ports is arranged in one-to-one correspondence with the number of the movable scroll plates.

[0019] Preferably, the outer shell is provided with an air intake connector, and the air intake port is opened on the air intake connector; the outer shell is provided with an air exhaust connector, and the air exhaust port is opened on the air exhaust connector.

[0020] Beneficial effects:

[0021] The scroll compressor applicable to all refrigerants provided by the present invention is provided with at least two movable scrolls and a fixed scroll in the shell of an independent compressor. Compared with the simultaneous provision of multiple separate scroll compressors, the arrangement of accessories is effectively reduced, the use cost is reduced, and the space occupation can be effectively reduced. The overall structure is more compact, and it can be effectively applied to small air-conditioning equipment, vehicle air-conditioning and other scenes with limited space, thereby improving applicability. In addition, the compression assembly includes at least two movable scrolls and a fixed scroll arranged in a one-to-one correspondence, which is equivalent to having at least two compression chambers in the shell. All movable scrolls are driven to rotate by a driving member, and air is sucked into the shell through the air inlet. After being compressed by multiple compression chambers at the same time, the air is continuously discharged outward from the exhaust port, which effectively improves the compression efficiency, reduces the pressure loss and heat exchange loss of the refrigerant inside the shell, improves the energy efficiency ratio of the entire refrigeration system, reduces energy consumption, and can maintain a higher performance in a wider range of working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a scroll compressor applicable to all refrigerants provided by the present invention;

[0023] Figure 2 It is a schematic diagram of a half-section structure of a scroll compressor housing applicable to all refrigerants provided by the present invention;

[0024] Figure 3 is a schematic diagram of a compression assembly and a driving member provided by an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a compression assembly and a driving member provided by another embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of a compression assembly and a driving member provided in another embodiment of the present invention.

[0027] In the figure:

[0028] 1. Shell; 11. Air intake connector; 111. Air intake port; 12. Air exhaust connector; 121. Air exhaust port;

[0029] 21. orbiting scroll; 211. sleeve; 212. connecting key; 213. adapter shaft; 22. stationary scroll;

[0030] 31. Through-shaft motor; 311. Motor housing; 312. Motor shaft; 32. Non-through-shaft motor; 33. Gear assembly; 331. First transmission gear; 332. Second transmission gear; 333. Third transmission gear; 334. Fourth transmission gear; 335. Transmission shaft;

[0031] 4. Electrical controls. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] This embodiment provides a scroll compressor suitable for all refrigerants. Figures 1 to 3 As shown, the scroll compressor includes a housing 1, a compression assembly and a driving member. The housing 1 has an air inlet 111 and an air outlet 121. The compression assembly is located in the housing 1, and the compression assembly includes at least two movable scrolls 21 and fixed scrolls 22 arranged in a one-to-one correspondence. The movable scroll 21 is rotatably connected to the housing 1, and the fixed scroll 22 is fixedly connected to the housing 1. The corresponding movable scrolls 21 and fixed scrolls 22 jointly form a compression chamber connected to the air inlet 111 and the air outlet 121. The driving member is located in the housing 1, and is used to drive all the movable scrolls 21 to rotate.

[0037] In this embodiment, at least two movable scrolls 21 and fixed scrolls 22 are provided in the housing 1 of an independent compressor. Compared with the simultaneous provision of multiple separate scroll compressors, the number of accessories is effectively reduced, the use cost is reduced, and the space occupation is effectively reduced. The overall structure is more compact and can be effectively applied to small air-conditioning equipment, vehicle air-conditioning and other scenes with limited space, thereby improving applicability. In addition, the compression assembly includes at least two movable scrolls 21 and fixed scrolls 22 arranged in a one-to-one correspondence, which is equivalent to having at least two compression chambers in the housing 1. All movable scrolls 21 are driven to rotate by a driving member, and air is sucked into the housing 1 through the air inlet 111. After being compressed by multiple compression chambers at the same time, the air is continuously discharged outward from the exhaust port 121, which effectively improves the compression efficiency, reduces the pressure loss and heat exchange loss of the refrigerant inside the housing 1, improves the energy efficiency ratio of the entire refrigeration system, reduces energy consumption, and can maintain a higher performance in a wider range of working conditions.

[0038] In this embodiment, the driving member includes a through-shaft motor 31, which includes a motor housing 311 and a motor shaft 312 rotatably arranged in the motor housing 311. The motor housing 311 is fixed in the housing 1, and both ends of the motor shaft 312 pass through the motor housing 311. The compression assembly includes two movable scroll plates 21 and a fixed scroll plate 22 arranged in a one-to-one correspondence. The two movable scroll plates 21 are correspondingly arranged at the opposite ends of the motor shaft 312, and each movable scroll plate 21 is connected to the corresponding end of the motor shaft 312. Specifically, the rotation of the motor shaft 312 of the through-shaft motor 31 can simultaneously drive the two movable scroll plates 21 at both ends to rotate, so that the two compression chambers can compress air at the same time.

[0039] In some optional embodiments, a sleeve 211 is provided on the side of the movable scroll 21 facing the motor shaft 312, and the movable scroll 21 is fixedly sleeved on the motor shaft 312 through the sleeve 211. The arrangement of the sleeve 211 can achieve effective fixation between the movable scroll 21 and the corresponding motor shaft 312. Specifically, one of the motor shaft 312 and the sleeve 211 is provided with a keyway, and the other is correspondingly provided with a connecting key 212, which is inserted into the keyway. The keyway is provided on the side wall of the sleeve 211, and the connecting key 212 is fixedly provided on the motor shaft 312. When the sleeve 211 is sleeved on the motor shaft 312, the connecting key 212 is correspondingly inserted into the keyway. Such an arrangement can prevent the movable scroll 21 from rotating relative to the motor shaft 312, and ensure reliable fixation between the movable scroll 21 and the motor shaft 312.

[0040] In some optional embodiments, a connecting shaft (not shown) is provided on one side of the movable scroll 21 facing the motor shaft 312, and the connecting shaft is connected to the corresponding end of the motor shaft 312 through a coupling. By providing a coupling, an effective connection between the movable scroll 21 and the corresponding side motor shaft 312 can also be achieved.

[0041] Optionally, a support bearing (not shown) is provided in the housing 1, and the motor shaft 312 is passed through the support bearing and is rotatably connected to the housing 1 through the support bearing. The provision of the support bearing can effectively support the suspended portion of the motor shaft 312 in the housing 1 and provide a rotatable connection with the housing 1, further ensuring a reliable and stable structure.

[0042] In this embodiment, the scroll compressor applicable to all refrigerants further includes an electric control unit 4, which is used to drive the motor shaft 312 of the through-shaft motor 31 to rotate. Optionally, the electric control unit 4 can be configured as a PCB circuit board.

[0043] In this embodiment, the number of the air inlets 111 is set in a one-to-one correspondence with the number of the orbiting scrolls 21 , and the number of the air outlets 121 is set in a one-to-one correspondence with the number of the orbiting scrolls 21 .

[0044] In this embodiment, an air intake connector 11 is provided on the housing 1, and an air intake port 111 is provided on the air intake connector 11. An air exhaust connector 12 is provided on the housing 1, and an air exhaust port 121 is provided on the air exhaust connector 12. By providing the air intake connector 11 and the air exhaust connector 12, it can be connected to an external pipeline according to actual needs.

[0045] In some other optional embodiments, refer to Figure 4 As shown, the driving member includes two non-through-shaft motors 32, and the two non-through-shaft motors 32 are arranged in a one-to-one correspondence with the two movable scrolls 21. It can be understood that the non-through-shaft motor 32 is a conventional motor with only one end extending the output shaft. The output shafts of the two non-through-shaft motors 32 are connected to the corresponding movable scrolls 21. By setting two non-through-shaft motors 32, the rotation speeds of the two movable scrolls 21 can be independently controlled, so as to adapt and adjust the compression conditions of the two compression chambers, thereby improving the performance to a certain extent.

[0046] In some optional embodiments, the compression assembly may also be provided with more than two orbiting scrolls 21 and fixed scrolls 22, for example, three orbiting scrolls 21 and fixed scrolls 22. Figure 5As shown, corresponding to the three movable scrolls 21 and the fixed scroll 22, the driving member includes not only the through-shaft motor 31, but also a gear assembly 33 for transmitting power. Specifically, the gear assembly 33 is arranged in the housing 1, and the gear assembly 33 includes a first transmission gear 331, a second transmission gear 332, a third transmission gear 333, a fourth transmission gear 334 and a transmission shaft 335. Among the three movable scrolls 21, two of the movable scrolls 21 are still connected through the through-shaft motor 31, and a transfer shaft 213 is provided on one side of the remaining movable scroll 21. Specifically, the first transmission gear 331 is fixedly sleeved on the motor shaft 312 of the through-shaft motor 31, the fourth transmission gear 334 is fixedly sleeved on the transfer shaft 213, the second transmission gear 332 and the third transmission gear 333 are respectively fixedly sleeved on the transmission shaft 335, and the transmission shaft 335 is rotatably connected to the housing 1. The first transmission gear 331 is meshed and connected with the second transmission gear 332 , and the third transmission gear 333 is meshed and connected with the fourth transmission gear 334 .

[0047] Specifically, when the through-shaft motor 31 is working, the motor shaft 312 rotates to drive the two movable scroll plates 21 connected thereto to rotate. The rotation of the motor shaft 312 can transmit power to the remaining movable scroll plate 21 through the first transmission gear 331, the second transmission gear 332, the transmission shaft 335, the third transmission gear 333, the fourth transmission gear 334, and the transfer shaft 213 in sequence, thereby making the three movable scroll plates 21 rotate at the same time and realizing the synchronous operation of the three compression chambers.

[0048] In summary, the scroll compressor provided in this embodiment has an effectively enhanced cooling / heating capacity compared with conventional compressors. It has at least two movable scrolls 21 and fixed scrolls 22 arranged in a one-to-one correspondence, and can compress the refrigerant at the same time, which enables more refrigerant flow to be processed in the same time. Through the electric control unit 4, at least two movable scrolls 21 can be controlled to rotate simultaneously, which is convenient to control and highly integrated. Compared with setting up multiple separate scroll compressors at the same time, it effectively reduces the setting of accessories, reduces the cost of use, and can effectively reduce the space occupation. The overall structure is more compact and can be effectively applied to small air-conditioning equipment, car air-conditioning and other scenes with limited space, thereby improving applicability. Since at least two sets of movable scrolls 21 and fixed scrolls 22 work at the same time, the compression capacity is effectively enhanced, so that the refrigerant can be quickly compressed and transported to the heat exchanger after starting up, so that the indoor or cooled space can reach the set temperature faster. In addition, the compressor can select a partial load operating condition, and then can flexibly control the working state of the two compression units, which is highly practical.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A scroll compressor suitable for all refrigerants, characterized in that: include: The housing (1) has an air intake port (111) and an air exhaust port (121); A compression assembly is located in the housing (1), the compression assembly comprises at least two movable scrolls (21) and fixed scrolls (22) arranged in a one-to-one correspondence, the movable scroll (21) is rotatably connected to the housing (1), the fixed scroll (22) is fixedly connected to the housing (1), and the corresponding movable scroll (21) and fixed scroll (22) together form a compression chamber connected to the air intake port (111) and the air discharge port (121); A driving member is located in the housing (1) and is used to drive all the movable scrolls (21) to rotate.

2. The scroll compressor applicable to all refrigerants according to claim 1, characterized in that: The driving member comprises a through-shaft motor (31), the through-shaft motor (31) comprising a motor housing (311) and a motor shaft (312) rotatably arranged in the motor housing (311), the motor housing (311) being fixed in the housing (1), and both ends of the motor shaft (312) passing through the motor housing (311); The compression assembly comprises two movable scrolls (21) and two fixed scrolls (22) which are arranged in a one-to-one correspondence. The two movable scrolls (21) are correspondingly arranged at two opposite ends of the motor shaft (312), and each movable scroll (21) is connected to a corresponding end of the motor shaft (312).

3. The scroll compressor applicable to all refrigerants according to claim 2, characterized in that: A sleeve (211) is provided on a side of the movable scroll (21) facing the motor shaft (312), and the movable scroll (21) is fixedly sleeved on the motor shaft (312) via the sleeve (211).

4. The scroll compressor applicable to all refrigerants according to claim 3, characterized in that: One of the motor shaft (312) and the sleeve (211) is provided with a key slot, and the other is correspondingly provided with a connecting key (212), and the connecting key (212) is inserted into the key slot.

5. The scroll compressor applicable to all refrigerants according to claim 2, characterized in that: A connecting shaft is provided on one side of the movable scroll (21) facing the motor shaft (312), and the connecting shaft is connected to a corresponding end of the motor shaft (312) via a coupling.

6. The scroll compressor applicable to all refrigerants according to claim 2, characterized in that: A support bearing is provided in the housing (1), and the motor shaft (312) passes through the support bearing and is rotatably connected to the housing (1) via the support bearing.

7. The scroll compressor applicable to all refrigerants according to claim 2, characterized in that: It also includes an electric control unit (4), and the electric control unit (4) is used to drive the motor shaft (312) of the through-shaft motor (31) to rotate.

8. The scroll compressor applicable to all refrigerants according to claim 1, characterized in that: The number of the air intake ports (111) is arranged in one-to-one correspondence with the number of the movable scroll plates (21).

9. The scroll compressor applicable to all refrigerants according to claim 1, characterized in that: The number of the exhaust ports (121) is arranged in one-to-one correspondence with the number of the movable scroll plates (21).

10. The scroll compressor applicable to all refrigerants according to claim 1, characterized in that: The outer shell (1) is provided with an air intake connector (11), and the air intake port (111) is opened on the air intake connector (11); the outer shell (1) is provided with an air exhaust connector (12), and the air exhaust port (121) is opened on the air exhaust connector (12).

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