CN210715090U - Variable capacity scroll compressor - Google Patents
Variable capacity scroll compressor Download PDFInfo
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- CN210715090U CN210715090U CN201921172009.5U CN201921172009U CN210715090U CN 210715090 U CN210715090 U CN 210715090U CN 201921172009 U CN201921172009 U CN 201921172009U CN 210715090 U CN210715090 U CN 210715090U
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- air suction
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Abstract
The utility model provides a variable capacity scroll compressor, which comprises a shell and a scroll compressor component arranged in the shell; the scroll compressor component comprises an upper frame, a fixed scroll, a movable scroll, a crankshaft, a motor and a lower frame; the static scroll plate and the movable scroll plate are combined to form a scroll compression cavity; the static scroll is provided with a compression cavity exhaust port, a compression cavity air suction port and an air suction bypass hole, the compression cavity exhaust port communicates the scroll compression cavity with the inner space of the shell, and the compression cavity air suction port is connected with a compression cavity air suction pipe penetrating out of the shell; particularly, an air suction bypass pipe penetrating out of the shell is connected to an air suction bypass hole of the fixed scroll, the tail end of the air suction bypass pipe is connected with an air suction pipe communicated with the compression cavity, a non-return electromagnetic valve is arranged on the air suction bypass pipe, and when the non-return electromagnetic valve is electrified and opened, air in the scroll compression cavity sequentially enters the air suction bypass pipe and the air suction pipe of the compression cavity through the air suction bypass hole and then returns to the scroll compression cavity. The utility model has the characteristics of the operational capability scope is wide and the operation is reliable high.
Description
Technical Field
The utility model relates to an electromechanics and refrigeration technology field, concretely relates to varactor volume scroll compressor.
Background
Scroll compressors are widely used in refrigeration air conditioning systems because of their advantages of high efficiency, low noise, long life, and the like. Along with the development of the scroll compressor towards large discharge capacity and high energy efficiency, the variable-capacity scroll compressor is provided, the operation energy efficiency under low load is improved, and a good energy-saving effect is obtained. The traditional variable displacement solution is to provide a variable displacement hole on a fixed scroll, such as a variable internal volume ratio scroll compressor disclosed in application No. 201420362040.6, and the space in the compressor shell is communicated with a scroll compression cavity by taking an auxiliary exhaust hole as the variable displacement hole, so as to reduce the displacement of the compressor. However, the pressure relief valve device including the elastic sheet, the bolt and the like needs to be added, so that the parts processing, assembly and maintenance become more complicated, and the reliability of the whole compressor is not facilitated, and therefore, the improvement is needed.
Disclosure of Invention
The utility model aims at providing a variable capacity scroll compressor, it has simple structure, easily equipment and the characteristics of being convenient for maintain, still has the characteristics that the operation ability scope is wide and the operation is reliable high.
The utility model discloses a following technical scheme of purpose accessible realizes:
a variable capacity scroll compressor includes a housing and a scroll compressor assembly mounted within the housing; the scroll compressor component comprises an upper frame, a fixed scroll, a movable scroll, a crankshaft, a motor and a lower frame; the upper frame is fixed at the upper part in the shell, a fixed scroll and a movable scroll are arranged above the upper frame, and the fixed scroll and the movable scroll are combined to form a scroll compression cavity; the middle part of the upper frame is provided with an upper frame shaft hole, the upper part of the crankshaft passes through the upper frame shaft hole to be connected with the upper frame, and the eccentric part of the upper part of the crankshaft is inserted into the eccentric sleeve of the movable scroll; the lower frame is fixed at the lower part in the shell, the middle part of the lower frame is provided with a lower frame shaft hole, and the lower part of the crankshaft penetrates through the lower frame shaft hole to be connected with the lower frame; an oil suction pipe part is coaxially arranged in the bottom of the crankshaft, a rotor of a motor is arranged near the middle of the crankshaft, and a stator of the motor is fixedly arranged between the upper frame and the lower frame in the shell; the static scroll is provided with a compression cavity exhaust port, a compression cavity air suction port and an air suction bypass hole, the compression cavity exhaust port communicates the scroll compression cavity with the inner space of the shell, and the compression cavity air suction port is connected with a compression cavity air suction pipe penetrating out of the shell; an exhaust port is arranged on the shell and positioned below the upper frame, and is communicated with a compressor exhaust pipe; the method is characterized in that: and when the non-return electromagnetic valve is electrified and opened, gas in the vortex compression cavity sequentially enters the air suction bypass pipe and the air suction pipe of the compression cavity from the air suction bypass hole of the static vortex disk and then returns to the vortex compression cavity.
According to the technical scheme, the utility model discloses the bypass hole of breathing in on the well static vortex dish is including 2 to 4, and every bypass hole of breathing in is equipped with 1 non return solenoid valve on every bypass pipe of breathing in through 1 bypass pipe intercommunication compression chamber breathing pipe of breathing in respectively.
Further optimize the scheme, the utility model discloses suspend back the solenoid valve and arrange outside the casing.
The utility model has the following substantive characteristics and progress.
1. The utility model discloses a break-make of each bypass pipe of breathing in of non return solenoid valve control realizes compressor variable capacity control. When the non-return electromagnetic valve is electrified and opened, gas in the vortex compression cavity sequentially enters the suction by-pass pipe and the compression cavity air suction pipe from the suction by-pass hole of the fixed vortex disc and then returns to the vortex compression cavity, the pressure of the compressed gas in the vortex compression cavity is reduced, the compression starting point of the vortex compression cavity is delayed, and the displacement of the compressor is reduced and the compressor enters a variable volume state; when the non-return electromagnetic valve is turned off in a power-off manner, the air suction bypass hole of the fixed scroll plate is sealed, and the compressor enters a full-capacity operation state.
2. The utility model discloses under the condition that does not reduce the compressor rotational speed, can obtain littleer displacement, expanded the operational capability scope of compressor, also improved compressor operational reliability simultaneously.
3. The utility model also has the characteristics of few components and easy assembly; the non-return solenoid valve also has the characteristic of being convenient for maintenance when further arranged outside the housing.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the middle fixed scroll according to the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Examples
Referring to FIGS. 1 and 2, a variable capacity scroll compressor includes a housing 1 and a scroll compressor assembly mounted within the housing 1.
The scroll compressor component comprises an upper frame 11, a fixed scroll 2, a movable scroll 3, a crankshaft 4, a motor and a lower frame 12; the upper frame 11 is fixed on the upper part in the shell 1, a fixed scroll 2 and a movable scroll 3 are arranged above the upper frame, and the fixed scroll 2 and the movable scroll 3 are combined to form a scroll compression chamber; an upper frame shaft hole is formed in the middle of the upper frame 11, the upper part of the crankshaft 4 penetrates through the upper frame shaft hole to be connected with the upper frame 11, and the eccentric part 41 in the upper part of the crankshaft 4 is inserted into the eccentric sleeve of the movable scroll 3; the lower frame 12 is fixed at the lower part in the shell 1, the middle part of the lower frame 12 is provided with a lower frame shaft hole, and the lower part of the crankshaft 4 passes through the lower frame shaft hole and is connected with the lower frame 12; the oil suction pipe part 42 is coaxially arranged in the bottom of the crankshaft 4, the rotor 51 of the motor is arranged near the middle part of the crankshaft 4, and the stator 52 of the motor is fixedly arranged between the upper frame 11 and the lower frame 12 in the shell 1.
Referring specifically to fig. 2, the fixed scroll 2 has a compression chamber discharge port 20, a compression chamber suction port 210 and 3 suction bypass holes 22, the compression chamber discharge port 20 communicates the scroll compression chamber with the inner space 100 of the casing 1, and the compression chamber suction port 210 is connected with a compression chamber suction pipe 21 penetrating through the casing 1; the shell 1 is provided with an exhaust port below the upper frame 11 and communicated with a compressor exhaust pipe 10.
Referring to fig. 1 and 2, 3 suction bypass holes 22 of the fixed scroll 2 are respectively connected with suction bypass pipes 23 penetrating through the shell 1, the end of each suction bypass pipe 23 is connected to a compression chamber suction pipe 21, and a non-return electromagnetic valve 24 located outside the shell 1 is arranged on each suction bypass pipe 23.
The utility model provides a bypass pipe 23 of breathing in realizes compressor variable capacity control by the break-make of 24 control of non return solenoid valve. The variable capacitance control process is as follows: when the non-return electromagnetic valve 24 is electrified and opened, gas in the vortex compression cavity sequentially enters the suction by-pass pipe 23 and the compression cavity suction pipe 21 from the suction by-pass hole 22 of the fixed vortex disc 2 and then returns to the vortex compression cavity, the pressure of the compressed gas in the vortex compression cavity is reduced, the compression starting point of the vortex compression cavity is delayed, and the displacement of the compressor is reduced and the compressor enters a variable volume state; when the non-return electromagnetic valve 24 is powered off, the air suction bypass hole 22 of the fixed scroll 2 is sealed, and the compressor enters a full-capacity operation state.
Claims (3)
1. The variable capacity scroll compressor comprises a shell (1) and a scroll compressor assembly arranged in the shell (1); the scroll compressor component comprises an upper frame (11), a fixed scroll (2), a movable scroll (3), a crankshaft (4), a motor and a lower frame (12); the upper frame (11) is fixed on the upper part in the shell (1), a static scroll (2) and a movable scroll (3) are arranged above the upper frame, and the static scroll (2) and the movable scroll (3) are combined to form a scroll compression cavity; an upper frame shaft hole is formed in the middle of the upper frame (11), the upper part of the crankshaft (4) penetrates through the upper frame shaft hole to be connected with the upper frame (11), and an eccentric part (41) in the upper part of the crankshaft (4) is inserted into an eccentric sleeve of the movable scroll (3); the lower frame (12) is fixed at the lower part in the shell (1), the middle part of the lower frame (12) is provided with a lower frame shaft hole, and the lower part of the crankshaft (4) passes through the lower frame shaft hole and is connected with the lower frame (12); an oil suction pipe part (42) is coaxially arranged in the bottom of the crankshaft (4), a rotor (51) of a motor is arranged near the middle of the crankshaft (4), and a stator (52) of the motor is fixedly arranged between an upper frame (11) and a lower frame (12) in the shell (1); the fixed scroll (2) is provided with a compression cavity exhaust port (20), a compression cavity suction port (210) and a suction bypass hole (22), the compression cavity exhaust port (20) communicates the scroll compression cavity with the inner space (100) of the shell (1), and the compression cavity suction port (210) is connected with a compression cavity suction pipe (21) penetrating through the shell (1); an exhaust port is arranged on the shell (1) and positioned below the upper frame (11) and is communicated with a compressor exhaust pipe (10); the method is characterized in that: the fixed scroll is characterized in that an air suction bypass pipe (23) penetrating out of the shell (1) is connected to an air suction bypass hole (22) of the fixed scroll (2), the tail end of the air suction bypass pipe (23) is connected to an air suction pipe (21) of the compression cavity, a check electromagnetic valve (24) is arranged on the air suction bypass pipe (23), and when the check electromagnetic valve (24) is electrified and opened, air in the scroll compression cavity sequentially enters the air suction bypass pipe (23) and the air suction pipe (21) of the compression cavity from the air suction bypass hole (22) of the fixed scroll (2) and then returns to the scroll compression cavity.
2. A variable capacity scroll compressor as claimed in claim 1, wherein: the fixed scroll (2) is provided with 2-4 air suction bypass holes (22), each air suction bypass hole (22) is communicated with a compression cavity air suction pipe (21) through 1 air suction bypass pipe (23), and each air suction bypass pipe (23) is provided with 1 check electromagnetic valve (24).
3. A variable capacity scroll compressor according to claim 1 or 2, wherein: the non-return electromagnetic valve (24) is arranged outside the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921172009.5U CN210715090U (en) | 2019-07-24 | 2019-07-24 | Variable capacity scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921172009.5U CN210715090U (en) | 2019-07-24 | 2019-07-24 | Variable capacity scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210715090U true CN210715090U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921172009.5U Active CN210715090U (en) | 2019-07-24 | 2019-07-24 | Variable capacity scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210715090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11668307B2 (en) | 2021-03-31 | 2023-06-06 | Danfoss (Tianjin) Ltd. | Oil tubing installation assembly and scroll compressor |
-
2019
- 2019-07-24 CN CN201921172009.5U patent/CN210715090U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11668307B2 (en) | 2021-03-31 | 2023-06-06 | Danfoss (Tianjin) Ltd. | Oil tubing installation assembly and scroll compressor |
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