Rotary compressor

Abstract

A rotary compressor comprises a shell, a motor, a compression pump arranged in the shell, a high-pressure cavity communicating unit arranged in the shell, and a high-pressure cavity communicating unit located on one side of the shell, communicated with the space in the shell and connected with the compression pump. By starting an electromagnetic valve of the high-pressure cavity communicating unit, low-density refrigerant gas in a shell of the rotary compressor is transmitted to a bypass port through a communicating pipe located in the inner space of the shell 0-180 seconds before starting and enters a compression cavity of a cylinder body of the compression pump, the mass of operating refrigerant in single suction-compression-exhaust circulation is reduced, and the working efficiency of the compressor is improved. Meanwhile, the high-low pressure difference in the starting period is reduced, the electromagnetic valve is closed when the timing time is up, the starting torque and the maximum torque needed in the period are reduced, and the efficient low-torque motor can help to improve the energy efficiency of the rotary compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a method for enabling a high-efficiency low-torque motor to be used by reducing the starting torque requirement, thereby helping to improve the energy efficiency of a rotary compressor. Background Art

[0002] Existing rotary compressors mainly include the following components: an exhaust pipe, a housing, a motor (stator, rotor), a crankshaft, an upper bearing, a muffler cover, a compression unit (cylinder block, ring, vane), a lower bearing, a bottom cover, an outlet pipe, a liquid receiver, and an inlet pipe. The basic working principle of the compressor is as follows: When the compressor is powered on, the stator generates a magnetic field, causing the rotor to rotate, driving the crankshaft, and causing the ring to perform an eccentric motion in the cylinder block, thereby compressing the low-temperature and low-pressure gas refrigerant medium into a high-temperature and high-pressure gas, which is discharged from the cylinder block through the muffler cover into the housing. Then, after passing through the cut edge outside the stator and the gap between the rotors, it is discharged into the refrigeration cycle system through the outlet pipe.

[0003] However, since the rotary compressor starts by energizing the coil to drive the motor rotor to perform a rotary motion, and then driving the crankshaft to drive the ring to perform an eccentric motion in the cylinder block for compression, the suction cavity and the compression cavity are formed by separating the inhaled fluid from the compressed fluid by the vane. When the fluid in the compression cavity reaches the exhaust pressure in the compressor housing plus the impedance of the exhaust valve, the exhaust valve is opened to achieve a continuous suction and exhaust cycle; when directly inhaling refrigeration oil or liquid refrigerant during startup, when the mass flow rate is greater than the starting torque / maximum torque of the motor by the compressor load, a startup failure problem will occur; increasing the starting torque / maximum torque of the motor will also cause deterioration of the energy efficiency of the compressor, which is still a problem that developers and related researchers in the compressor and related industries must continuously overcome and solve.

[0004] In view of this, the inventor of the present invention specifically studied the above-mentioned existing technology with great concentration and combined with the application of theory, and tried his best to solve the above problems, which became the goal of the inventor's improvement. Summary of the Invention

[0005] Therefore, the object of the present invention is to provide a starting high-pressure chamber communication unit to reduce the refrigerant mass flow rate in the compression chamber during startup; at the same time, reduce the high and low pressure difference, reduce the starting torque / operating torque requirement during startup, enable a low-torque high-efficiency motor to be successfully applied to a high-efficiency compressor, and improve the compressor efficiency, so as to solve the problems existing in the above-mentioned existing technology.

[0006] To achieve the above object, the present invention provides a rotary compressor, comprising:

[0007] A housing provided with an outlet pipe;

[0008] A motor disposed within the housing;

[0009] A compression pump is disposed within the housing and is located below the motor. The compression pump includes:

[0010] A cylinder block having a first end and a second end. A compression chamber penetrating the upper and lower ends is provided at the center of the cylinder block. A vane slot, a spring hole, a suction port, and a bypass port are formed on the wall of the compression chamber. The spring hole communicates with the vane slot, and the suction port is independent and non - communicating with the vane slot and the spring hole.

[0011] A ring is rotatably disposed within the compression chamber of the cylinder block.

[0012] A vane is reciprocally movably disposed within the vane slot of the cylinder block. The front end of the vane abuts against the outer peripheral surface of the ring.

[0013] At least one spring is disposed at the rear end of the vane.

[0014] An upper support is disposed within the housing and is located above the cylinder block.

[0015] A lower support is disposed within the housing and is located below the cylinder block; and

[0016] A crankshaft is disposed within the housing. The upper support, the motor, the ring, and the lower support are sleeved on the crankshaft; and

[0017] A high - pressure chamber connection unit is located on one side of the housing, communicates with the space within the housing respectively, and is connected to the bypass port of the cylinder block of the compression pump to connect the refrigerant gas in the space within the housing to the bypass port and enter the compression chamber.

[0018] Preferably, the high - pressure chamber connection unit includes a solenoid valve and two connecting pipes. One connecting pipe extends to the space within the housing, and the other connecting pipe is connected to the bypass port of the compression pump; and the solenoid valve is disposed at the two connecting pipes, so that the solenoid valve is located outside the housing.

[0019] Preferably, the suction port, the bypass port, the vane slot, and the spring hole are located at the first end. The suction port communicates with the compression chamber through the vane slot, and the bypass port communicates with either the compression chamber or the suction port.

[0020] Preferably, a first imaginary line and a second imaginary line are defined. The first imaginary line extends from the left and right sides of the center point of the suction port, and the second imaginary line extends from the upper and lower ends of the center point of the suction port, so that a first region, a second region, a third region, and a fourth region are defined around the suction port.

[0021] Preferably, when the suction port is located in the first region or the second region, the center line of the suction port is L3, the center line of the bypass port is L4, and the included angle α between the center line L3 of the suction port and the center line L4 of the bypass port satisfies: 10° < α < 70°.

[0022] Preferably, when the suction port is located in the first region or the second region, the bypass port is L-shaped and communicates with the suction port.

[0023] Preferably, when the bypass port is located in the third region or the fourth region, the center line of the suction port is L5, the center line of the bypass port is L6, and the included angle α between the center line L5 of the suction port and the center line L6 of the bypass port satisfies: 10° < α < 15°.

[0024] Preferably, it further includes a filter bottle, which is provided with an inlet pipe at its top, and at least one inner pipe of the filter bottle is arranged inside it. The inner pipe of the filter bottle extends outside the filter bottle and extends into the housing, and is connected to the suction port of the cylinder block of the compression pump, so that the filter bottle is located on one side of the housing.

[0025] Preferably, it further includes a check valve, which is arranged at any one of the outlet pipe of the housing or the inlet pipe of the filter bottle.

[0026] Preferably, when the check valve is arranged on the outlet pipe of the housing, the check valve is located at any one of the outside or the inside of the housing.

[0027] From the above structure, the beneficial effects of the present invention are as follows: When the rotary compressor is in the unstarted state, first start the solenoid valve of the high-pressure chamber communication unit, so that the low-density refrigerant gas in the housing of the rotary compressor is transmitted to the bypass port through the communication pipe located in the space of the housing within 0 to 180 seconds before startup, and enters the compression chamber of the cylinder block of the compression pump, reducing the mass of the refrigerant in a single suction-compression-exhaust cycle, and at the same time reducing the high and low pressure difference during startup. When the timing time arrives, close the solenoid valve, reducing the startup and maximum torque required during this period, so that a high-efficiency and low-torque motor can help improve the energy efficiency of the rotary compressor. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the rotary compressor of the present invention.

[0029] Figure 2 It is a sectional view of the rotary compressor of the present invention.

[0030] Figure 3 It is a bottom sectional view of the rotary compressor of the present invention.

[0031] Figure 4Schematic diagram of the first type of structure of the cylinder block of the rotary compressor of the present invention.

[0032] Figure 5 Schematic diagram of the second type of structure of the cylinder block of the rotary compressor of the present invention.

[0033] Figure 6 For the present invention Figure 4 and Figure 5 cross-sectional schematic diagram (one).

[0034] Figure 7 For the present invention Figure 4 and Figure 5 cross-sectional schematic diagram (two).

[0035] Figure 8 For the present invention Figure 4 and Figure 5 cross-sectional schematic diagram (three).

[0036] Figure 9 Schematic diagram of the third type of structure of the cylinder block of the rotary compressor of the present invention.

[0037] Figure 10 Schematic diagram of the fourth type of structure of the cylinder block of the rotary compressor of the present invention.

[0038] Figure 11 For the present invention Figure 9 and Figure 10 cross-sectional schematic diagram.

[0039] Figure 12 Schematic diagram (one) of the rotary compressor of the present invention.

[0040] Figure 13 Schematic diagram (two) of the rotary compressor of the present invention.

[0041] Symbol description:

[0042]

[0043] Detailed implementation manners

[0044] In order to understand the features, content, advantages and achievable effects of the present invention, the present invention will be described in detail below in conjunction with the drawings and in the form of embodiments. The drawings used herein are only for illustration and assistance in the description, and may not be the true proportions and precise configurations after the implementation of the present invention. Therefore, the scope of rights of the present invention in actual implementation should not be interpreted or limited by the proportional and configurational relationships of the attached drawings.

[0045] The advantages, features, and technical methods achieved by the present invention will be described in more detail with reference to exemplary embodiments and the accompanying drawings and will be more easily understood. Moreover, the present invention may be implemented in different forms, so it should not be construed as being limited only to the embodiments described herein. On the contrary, for those of ordinary skill in the art, the provided embodiments will make this disclosure more thorough, comprehensive, and completely convey the scope of the present invention, and the present invention will be defined only by the appended claims.

[0046] First, please refer to Figures 1 to 11 , which is a rotary compressor of the present invention. The rotary compressor 1 includes: a housing 11, a motor 12, a compression pump 13, and a high-pressure chamber communication unit 14. The rotary compressor 1 can be either a vertical compressor or a horizontal compressor. As shown in this figure, the rotary compressor 1 is presented in the form of a vertical compressor.

[0047] The housing 11 is an overall hollow body. The housing 11 is used to accommodate components such as the motor 12 and the compression pump 13. An outlet pipe 111 is provided on the housing 11. The outlet pipe 111 is provided at any one of the top or side of the housing 11. As shown in this figure, the outlet pipe 111 is provided at the top of the housing 11, and the bottom end inside the housing 11 can be used to store refrigeration oil; wherein, the housing 11 can be of various existing structural forms on the market, and its structural form is not limited.

[0048] The motor 12 is provided inside the housing 11. The motor 12 includes a stator 121, and the stator 121 is fixed to the inner wall of the housing 11; and a rotor 122, and the rotor 122 is rotatably provided inside the stator 121; wherein, the motor 12 can be of various existing structural forms on the market, and its structural form is not limited.

[0049] The compression pump 13 is disposed within the housing 11. The compression pump 13 is located below the motor 12. The compression pump 13 includes a cylinder block 131. The cylinder block 131 is disposed within the housing 11 and is located below the motor 12. The cylinder block 131 has a first end 1311 and a second end 1312. A compression chamber 1313 that penetrates the upper and lower ends is provided at the center of the cylinder block 131. A vane groove 1314, a spring hole 1315, a suction port 1316, and a bypass port 1317 are formed on the wall of the compression chamber 1313. The spring hole 1315 does not completely penetrate the wall of the compression chamber 1313. The spring hole 1315 communicates with the vane groove 1314. The suction port 1316 is independent and non - communicating with the vane groove 1314 and the spring hole 1315. A ring 132 is rotatably disposed within the compression chamber 1313 of the cylinder block 131. A vane 133 is reciprocally movably disposed within the vane groove 1314 of the cylinder block 131. The front end of the vane 133 abuts against the outer peripheral surface of the ring 132, dividing the compression chamber 1313 into a suction chamber and a compression chamber. At least one spring 134 is disposed within the spring hole 1315, and the spring 134 is located at the rear end of the vane 133, causing the front end of the vane 133 to abut against the outer peripheral surface of the ring 132, while the rear end of the spring 134 abuts against the inner wall of the housing 11. By the telescopic movement of the spring 134 within the spring hole 1315, the front end of the vane 133 abuts against the eccentrically rotating ring 132 within the compression chamber 1313 and performs reciprocating motion. An upper support 135 is disposed within the housing 11 and is located above the cylinder block 131. A lower support 136 is disposed within the housing 11 and is located below the cylinder block 131. A crankshaft 137 is formed by extending longitudinally for an appropriate length. The crankshaft 137 is disposed within the housing 11. The crankshaft 137 has at least one eccentric portion 1371, and the eccentric portion 1371 is located at an appropriate distance from the lower end of the crankshaft 137, defining an upper shaft section 1372 and a lower shaft section 1373 of the crankshaft 137. The upper shaft section 1372 is sleeved by the upper support 135 and the rotor 122 of the motor 12. The lower shaft section 1373 is sleeved by the lower support 136, and each eccentric portion 1371 is sleeved by the ring 132 of each cylinder block 131.

[0050] Specifically, the number of the cylinder block 131 and the ring 132 is not limited. That is, the compression pump 13 can be of single - cylinder, double - cylinder, or more than three - cylinder types, etc. The cylinder block 131 and the ring 132 can be correspondingly set to one, two, or more than three. The number of the rings 132 is determined according to the type of the cylinder block 131 and is rotatably disposed within the compression chamber 1313 of the cylinder block 131.

[0051] The high-pressure chamber communication unit 14 is located on one side of the housing 11. The high-pressure chamber communication unit 14 communicates with the space inside the housing 11 respectively, and is connected to the bypass port 1317 of the cylinder block 131 of the compression pump 13, so as to transfer the refrigerant gas in the space inside the housing 11 to the bypass port 1317 and enter the compression chamber 1313. Wherein the high-pressure chamber communication unit 14 includes an electromagnetic valve 141 and two communication pipes 142. The two communication pipes 142 are made of metal material. One end of one communication pipe 142 extends to the space inside the housing 11. One end of the other communication pipe 142 is connected to the bypass port 1317 of the cylinder block 131 of the compression pump 13, so that the two communication pipes 142 are located on one side of the housing 11, and the electromagnetic valve 141 is arranged at the two communication pipes 142, so that the electromagnetic valve 141 is located outside the housing 11.

[0052] Through the above structure, the further description is as follows:

[0053] In this embodiment, the rotary compressor 1 further includes a filter bottle 15, which is made of metal material. The filter bottle 15 is formed by extending a proper length longitudinally, and an accommodation space 150 is defined inside it. An inlet pipe 151 is provided at the top of the filter bottle 15, and at least one inner pipe 152 of the filter bottle is arranged inside the filter bottle 15. The inner pipe 152 of the filter bottle extends outside the filter bottle 15 and extends into the housing 11, and is connected to the suction port 1316 of the cylinder block 131 of the compression pump 13, so that the filter bottle 15 is located on one side of the housing 11. The low-pressure gas (refrigerant) in the filter bottle 15 is transferred to the suction port 1316 of the cylinder block 131 of the compression pump 13 through the inner pipe 152 of the filter bottle, and then transferred to the compression chamber 1313 to be continuously compressed to a certain pressure and output to the space inside the housing 11. Further explanation, the inner pipe 152 of the filter bottle 15 and the cylinder block 131 of the compression pump 13 are in a connected state. The inlet pipe 151 of the filter bottle 15 is connected to the outlet pipe 111 of the housing 11 of the rotary compressor 1 to form a refrigeration cycle system. The number of the inner pipes 152 of the filter bottle 15 is not limited, that is, it is determined according to the type of the compression pump 13 such as single-cylinder, double-cylinder or more than three-cylinder. Wherein, the filter bottle 15 can be various existing structural forms on the market, and its structural form is not limited.

[0054] In this embodiment, the rotary compressor 1 further includes an electrical connector assembly 16. The electrical connector assembly 16 is arranged at the top or side of the housing 11. As shown in this figure, the electrical connector assembly 16 is arranged at the top of the housing 11 and is coupled to the motor 12 and electrically connected. Wherein, the electrical connector assembly 16 can be various existing structural forms on the market, and its structural form is not limited.

[0055] However, regarding the overall shape of the cylinder block 131 of the compression pump 13, it is further described as follows:

[0056] First, in this embodiment, the suction port 1316, the bypass port 1317, the vane groove 1314, and the spring hole 1315 are located at the first end 1311 of the cylinder block 131. The suction port 1316 and the vane groove 1314 communicate with the compression chamber 1313. A first imaginary line L1 and a second imaginary line L2 are defined at the first end 1311 of the cylinder block 131. The first imaginary line L1 extends from both left and right sides of the center point of the suction port 1316, and the second imaginary line L2 extends from both upper and lower ends of the center point of the suction port 1316, such that a first area A1, a second area A2, a third area A3, and a fourth area A4 are defined around the suction port 1316.

[0057] Type 1: When the bypass port 1317 is located in the first area A1 (as shown in Figure 4 ), the bypass port 1317 communicates with either the compression chamber 1313 or the suction port 1316. In other words, the bypass port 1317 communicates with the compression chamber 1313, or the bypass port 1317 communicates with the suction port 1316. However, regardless of whether the bypass port 1317 communicates with the compression chamber 1313 (as shown in Figure 6 ), or the bypass port 1317 communicates with the suction port 1316 (as shown in Figure 7 ), where the center line of the suction port 1316 is L3 and the center line of the bypass port 1317 is L4, the angle α between the center line L3 of the suction port 1316 and the center line L4 of the bypass port 1317 satisfies: 10° < α < 70° (as shown in Figure 6 and Figure 7 ).

[0058] Type 2: Since the first area A1 and the second area A2 are on the same side of the suction port 1316, when the bypass port 1317 is located in the second area A2 (as shown in Figure 5 ), the bypass port 1317 communicates with either the compression chamber 1313 or the suction port 1316. In other words, the bypass port 1317 communicates with the compression chamber 1313, or the bypass port 1317 communicates with the suction port 1316. However, regardless of whether the bypass port 1317 communicates with the compression chamber 1313 (as shown in Figure 6 ), or the bypass port 1317 communicates with the suction port 1316 (as shown in Figure 7 ), where the center line of the suction port 1316 is L3 and the center line of the bypass port 1317 is L4, the angle α between the center line L3 of the suction port 1316 and the center line L4 of the bypass port 1317 satisfies: 10° < α < 70° (as shown in Figure 6and Figure 7 as shown).

[0059] In addition, as described above, regardless of whether the bypass port 1317 is located in the first region A1 (as Figure 4 shown) or the second region A2 (as Figure 5 shown), the bypass port 1317 is L-shaped and communicates with the suction port 1316 (as Figure 8 shown). Further, the L-shaped bypass port 1317 is formed by a first channel 13171 and a second channel 13172. The first channel 13171 extends from the bypass port 1317 towards the compression chamber 1313 of the cylinder block 131, but does not communicate with the compression chamber 1313. The second channel 13172 extends from one side surface of the first end portion 1311 of the cylinder block 131 towards the suction port 1316 and communicates with the suction port 1316. The first channel 13171 and the second channel 13172 intersect to form an L-shape, and a plug 13173 is provided at a position where the second channel 13172 faces the first end portion 1311 side of the cylinder block 131 to prevent the refrigerant gas from flowing out.

[0060] Type three: When the bypass port 1317 is located in the third region A3 (as Figure 9 shown), the bypass port 1317 communicates with either the compression chamber 1313 or the suction port 1316. In other words, the bypass port 1317 communicates with the compression chamber 1313, or the bypass port 1317 communicates with the suction port 1316. As shown in this figure, the bypass port 1317 communicates with the suction port 1316 (as Figure 11 shown); however, regardless of whether the bypass port 1317 communicates with the compression chamber 1313 or the bypass port 1317 communicates with the suction port 1316, the center line of the suction port 1316 is L5, the center line of the bypass port 1317 is L6, and the included angle α between the center line L5 of the suction port 1316 and the center line L6 of the bypass port 1317 satisfies: 10° < α < 15° (as Figure 11 shown).

[0061] Type four: Since the third region A3 and the fourth region A4 are on the same side of the suction port 1316, when the bypass port 1317 is located in the fourth region A4 (as Figure 10 shown), the bypass port 1317 communicates with either the compression chamber 1313 or the suction port 1316. In other words, the bypass port 1317 communicates with the compression chamber 1313, or the bypass port 1317 communicates with the suction port 1316. As shown in this figure, the bypass port 1317 communicates with the suction port 1316 (as Figure 11as shown); however, regardless of whether the bypass port 1317 communicates with the compression chamber 1313 or the bypass port 1317 communicates with the suction port 1316, where the center line of the suction port 1316 is L5, the center line of the bypass port 1317 is L6, and the included angle between the center line L5 of the suction port 1316 and the center line L6 of the bypass port 1317 is α, and it satisfies: 10° < α < 15° (as Figure 11 shown).

[0062] As described above, regardless of the overall form presented by the cylinder block 131 of the compression pump 13, in this embodiment, the cross-sectional area S1 of the suction port 1316 is S1, the cross-sectional area of the bypass port 1317 is S2, and it satisfies: 2 ≤ S1 / S2 ≤ 300.

[0063] Please refer to Figure 12 and Figure 13 and supplement with reference to Figures 1 to 11 , in this embodiment, the rotary compressor 1 further includes a check valve 2, and the check valve 2 is disposed at any one of the outlet pipe 111 of the housing 11 (as Figure 12 shown) or the inlet pipe 151 of the filter bottle 15 (as Figure 13 shown). When the check valve 2 is disposed at the outlet pipe 111 of the housing 11, the check valve 2 is located either outside or inside the housing 11. In this figure, it shows that the check valve 2 is disposed outside the housing 11. However, regardless of whether the check valve 2 is disposed at the outlet pipe 111 of the housing 11 or the inlet pipe 151 of the filter bottle 15, the structures of the housing 11, the motor 12, the compression pump 13, the high-pressure chamber communication unit 14, the filter bottle 15, and the electrical connector assembly 16 of the rotary compressor 1 have been described above, so they will not be elaborated here.

[0064] Under this structure, when the present invention is implemented, when the rotary compressor 1 is in an unstarted state, first, the solenoid valve 141 of the high-pressure chamber communication unit 14 is activated, so that the low-density refrigerant gas in the housing 11 of the rotary compressor 1 is transmitted to the bypass port 1317 via the communication pipe 142 in the space of the housing 11 within 0 to 180 seconds before startup, and finally enters the compression chamber 1313 of the cylinder block 131 of the compression pump 13; when the electrical connection assembly 16 of the rotary compressor 1 supplies power to the stator 121 of the motor 12, the rotor 122 is driven to rotate by the stator 121, driving the crankshaft 137 to eccentrically rotate, so that the eccentric portion 1371 of the crankshaft 137 can drive the ring 132 to rotate within the cylinder block 131, reducing the mass of the refrigerant in a single suction-compression-exhaust cycle and simultaneously reducing the high and low pressure differences during startup. When the timing is up, the solenoid valve 141 is closed, reducing the startup and maximum torque required during this period, and using the upper shaft section 1372 and the lower shaft section 1373 of the crankshaft 137 to support the upper support 135 and the lower support 136 and operate at high speed, causing the entire compression pump 13 to be in an operating state. As the ring 132 eccentrically rotates, at the same time, the low-pressure refrigerant flowing into the inlet pipe 151 of the filter bottle 15 is sucked into the compression chamber 1313 inside the cylinder block 131 of the compression pump 13 via the inner pipe 152 of the filter bottle, and is continuously compressed to a certain pressure, and then the high-pressure refrigerant in the compression chamber 1313 is output to the inside of the housing 11. The discharged high-pressure refrigerant can move upward through the gap between the housing 11 and the stator 121 of the motor 12, or the gap between the stator 121 and the rotor 122, and finally is discharged from the outlet pipe 111 of the housing 11 into the refrigeration cycle system. By repeating this cycle, the high-efficiency and low-torque motor 12 can help improve the energy efficiency of the rotary compressor 1.

[0065] As described above, the present invention provides a rotary compressor 1, and by activating the high-pressure chamber communication unit 14, it reduces the mass flow rate of the refrigerant in the compression chamber 1313 of the cylinder block 131 of the compression pump 13 during startup; at the same time, it reduces the high and low pressure differences and the startup torque / operating torque requirements during startup, enabling the low-torque and high-efficiency motor 12 to be successfully applied to the high-efficiency rotary compressor 1 and improving the performance of the rotary compressor 1.

[0066] The above is only an embodiment of the present invention, and the scope of implementation of the present invention cannot be limited by this. All simple equivalent changes and modifications made according to the claims of the present invention and the content of the patent specification still fall within the scope covered by the patent of the present invention.

Claims

1. A rotary compressor, characterized in that, Comprising: A housing provided with an outlet pipe; A motor disposed within the housing; A compression pump disposed within the housing and located below the motor. The compression pump includes: A cylinder block formed with a first end and a second end. A compression chamber penetrating the upper and lower ends is provided at the center of the cylinder block. A vane groove, a spring hole, a suction port, and a bypass port are formed on the wall of the compression chamber. The spring hole communicates with the vane groove, and the suction port is independent and non - communicating with the vane groove and the spring hole; A ring rotatably disposed within the compression chamber of the cylinder block; A vane reciprocally movably disposed within the vane groove of the cylinder block, with the front end of the vane abutted against the outer peripheral surface of the ring; At least one spring disposed at the rear end of the vane; An upper support disposed within the housing and located above the cylinder block; A lower support disposed within the housing and located below the cylinder block; and A crankshaft disposed within the housing, and the upper support, the motor, the ring, and the lower support are sleeved on the crankshaft; and A high - pressure chamber communication unit located on one side of the housing, communicating with the space within the housing respectively and connected to the bypass port of the cylinder block of the compression pump, so as to communicate the refrigerant gas in the space within the housing to the bypass port and enter the compression chamber.

2. The rotary compressor according to claim 1, characterized in that, The high - pressure chamber communication unit includes a solenoid valve and two connecting pipes. One connecting pipe extends to the space within the housing, and the other connecting pipe is connected to the bypass port within the compression pump; and the solenoid valve is disposed at the two connecting pipes, so that the solenoid valve is located outside the housing.

3. The rotary compressor according to claim 1, characterized in that, The suction port, the bypass port, the vane groove, and the spring hole are located at the first end. The suction port communicates with the compression chamber through the vane groove, and the bypass port communicates with either the compression chamber or the suction port.

4. The rotary compressor according to claim 3, characterized in that, Define a first imaginary line and a second imaginary line. The first imaginary line extends from the left and right sides of the center point of the suction port, and the second imaginary line extends from the upper and lower ends of the center point of the suction port, so that a first region, a second region, a third region, and a fourth region are defined around the suction port.

5. The rotary compressor according to claim 4, characterized in that, When the suction port is located in the first region or the second region, the center line of the suction port is L3, the center line of the bypass port is L4, and the included angle α between the center line L3 of the suction port and the center line L4 of the bypass port satisfies: 10° < α < 70°.

6. The rotary compressor according to claim 4, wherein, When the suction port is located in the first region or the second region, the bypass port is L - shaped and communicates with the suction port.

7. The rotary compressor according to claim 4, characterized in that, When the bypass port is located in the third region or the fourth region, the center line of the suction port is L5, the center line of the bypass port is L6, and the included angle α between the center line L5 of the suction port and the center line L6 of the bypass port satisfies: 10° < α < 15°.

8. The rotary compressor according to claim 1, wherein, Further includes a filter bottle, with an inlet pipe provided at its top, and at least one inner pipe of the filter bottle is disposed inside it. The inner pipe of the filter bottle extends outside the filter bottle and extends into the housing and is connected to the suction port of the cylinder block of the compression pump, so that the filter bottle is located on one side of the housing.

9. The rotary compressor according to claim 8, characterized in that, Further includes a check valve, which is disposed at any one of the outlet pipe of the housing or the inlet pipe of the filter bottle.

10. The rotary compressor according to claim 9, wherein, When the check valve is arranged on the outlet pipe of the housing, the check valve is located either outside or inside the housing anywhere.

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