Compressor and air conditioner having the same

Abstract

The present application provides a compressor and an air conditioner having the same, including a fixed cylinder, a variable displacement cylinder and a gas-liquid separator. The fixed cylinder has a first suction port; the variable displacement cylinder has a second suction port; the gas-liquid separator has a first suction pipe and a second suction pipe, the first suction pipe is communicated with the first suction port; and a first one-way valve group, the inlet of the first one-way valve group is communicated with the second suction pipe, and the outlet of the first one-way valve group is communicated with the second suction port. According to the compressor and the air conditioner having the same of the present application, the leakage problem during the single-cylinder operation of the variable displacement compressor can be effectively solved.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioners, and particularly relates to a compressor and an air conditioner having the same. Background Art

[0002] Currently, in order to adjust the capacity output according to the load demand in an air conditioning system, most of them apply variable-frequency compressors, and the compressor can adjust the capacity output by adjusting the compressor frequency. When the load of the air conditioning system is too small, it is necessary to continuously reduce the frequency of the compressor. However, due to the limitation of the minimum operating frequency of the compressor, the minimum cooling capacity that the compressor can output is limited. Therefore, when the system load is less than the minimum capacity that the compressor can output at the minimum frequency operation, the compressor will frequently start and stop, resulting in large power consumption of the compressor. At the same time, when the compressor frequency is too low, the volumetric efficiency and motor efficiency of the compressor are low, resulting in low energy efficiency during low-frequency operation of the compressor. Therefore, currently, this problem is solved by adopting a variable-frequency and variable-capacity method. That is, the compressor adopts a double-cylinder structure, and by adding a switching structure, the compressor can operate in two modes: single-cylinder and double-cylinder. The double-cylinder is used under large loads, and the single-cylinder is used under small loads. To achieve this function, it is necessary to seal the sliding vane grooves of the variable-capacity cylinder so as to introduce high pressure or low pressure into the sliding vane grooves to control the movement of the sliding vanes. When high pressure is introduced into the sliding vane grooves, the compressor is in the double-cylinder mode, and when low pressure is introduced, it is in the single-cylinder mode.

[0003] However, when operating in the single-cylinder mode, the inner circular cavity of the roller of the variable-capacity cylinder is at exhaust high pressure, and the outer circular cavity of the roller (inside the cylinder) is at low pressure. The high-pressure gas or oil will leak into the variable-capacity cylinder through the gap between the roller and the partition plate, and then leak into the liquid separator assembly through the lower suction port of the liquid separator, and then be sucked into the upper cylinder for compression, resulting in low volumetric efficiency and poor energy efficiency during single-cylinder operation of the compressor.

[0004] Therefore, how to provide a compressor and an air conditioner having the same that can effectively solve the leakage problem during single-cylinder operation of a variable-capacity compressor has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] Therefore, the technical problem to be solved by this application is to provide a compressor and an air conditioner having the same that can effectively solve the leakage problem during single-cylinder operation of a variable-capacity compressor.

[0006] To solve the above problems, this application provides a compressor, including:

[0007] A fixed cylinder having a first suction port;

[0008] A variable-capacity cylinder having a second suction port;

[0009] A gas-liquid separator having a first suction pipe and a second suction pipe, and the first suction pipe is communicated with the first suction port;

[0010] and a first check valve group, the inlet of the first check valve group is communicated with the second suction pipe, and the outlet of the first check valve group is communicated with the second suction port.

[0011] Further, the second suction port is arranged on the end face of the variable displacement cylinder, and the first check valve group is arranged at the second suction port.

[0012] Further, the number of the second suction ports is set to two, the two second suction ports are respectively arranged on the two end faces of the variable displacement cylinder, and a first check valve group is correspondingly arranged at each second suction port.

[0013] Further, the compressor further includes a communication channel and a control valve, the communication channel communicates the first suction pipe with the second suction port, and the control valve is used to control the on-off of the communication channel.

[0014] Further, the variable displacement cylinder and the fixed cylinder are separated by a partition portion, the control valve includes a second check valve group; the communication channel is arranged on the partition portion, a communication port is arranged on the end face of the fixed cylinder close to the variable displacement cylinder, the communication channel communicates the communication port with the second suction port, and the second check valve group is arranged on the fixed or partition portion and is located at the communication port.

[0015] Further, the compressor has a single-cylinder operation mode. In the single-cylinder operation mode, the fixed cylinder operates, the variable displacement cylinder is unloaded, the first check valve group is closed, and the control valve controls the communication channel to be disconnected.

[0016] Further, the compressor has a double-cylinder operation mode. In the double-cylinder operation mode, both the fixed cylinder and the variable displacement cylinder operate, the first check valve group is opened so that the gas in the gas-liquid separator can enter the second suction port through the second suction pipe; the control valve controls the communication channel to be communicated, and the control valve controls the communication channel to be opened so that the gas in the gas-liquid separator can enter the second suction port through the first suction pipe.

[0017] Further, when the variable displacement cylinder operates, the first check valve group can be opened under the action of the pressure difference between the inlet side and the outlet side, so that the gas in the gas-liquid separator enters the second suction port through the first suction pipe.

[0018] According to another aspect of the present application, an air conditioner is provided, including a compressor, and the compressor is the above-mentioned compressor.

[0019] The compressor provided by the present application and the air conditioner having the same adopt the first check valve, i.e., the suction cut-off valve, to greatly reduce the leakage problem during the single-cylinder operation of the variable displacement compressor, and improve the volumetric efficiency and energy efficiency during the single-cylinder operation. The present application can effectively solve the leakage problem during the single-cylinder operation of the variable displacement compressor. Description of the Drawings

[0020] Figure 1 Structural schematic diagram of the compressor according to the embodiment of the present application;

[0021] Figure 2 Structural schematic diagram of the variable displacement cylinder according to the embodiment of the present application;

[0022] Figure 3 Installation structural schematic diagram of the variable displacement cylinder according to the embodiment of the present application;

[0023] Figure 4 Structural schematic diagram of the compressor according to the embodiment of the present application;

[0024] Figure 5 Installation structural schematic diagram of the compressor according to the embodiment of the present application.

[0025] The reference signs are shown as:

[0026] 1. Fixed cylinder; 11. Communication port; 12. First roller; 2. Variable displacement cylinder; 21. Valve port; 22. Second roller; 3. Gas-liquid separator; 31. First suction pipe; 32. Second suction pipe; 41. First check valve group; 411. Valve plate; 412. Valve plate baffle; 42. Second check valve group; 43. Valve screw; 5. Partition part; 61. First flange; 62. Second flange; 621. Cover plate; 7. Crankshaft; 8. Housing assembly; 91. Motor stator; 92. Motor rotor. Detailed implementation manners

[0027] Refer to in combination Figures 1-5As shown in the figure, a compressor includes a fixed cylinder 1, a variable displacement cylinder 2, and a gas-liquid separator 3. The fixed cylinder 1 has a first suction port; the variable displacement cylinder 2 has a second suction port; the gas-liquid separator 3 has a first suction pipe 31 and a second suction pipe 32. The first suction pipe 31 is connected to the first suction port; and a first one-way valve group 41, the inlet of the first one-way valve group 41 is connected to the second suction pipe 32, and the outlet of the first one-way valve group 41 is connected to the second suction port. The connection between the inlet of the first one-way valve group 41 and the second suction pipe 32, and the connection between the outlet of the first one-way valve group 41 and the second suction port enable the gas to only enter the second suction port from the second suction pipe 32 through the first one-way valve group 41, and cannot enter the second suction pipe 32 from the second suction port, thereby preventing gas backflow. The compressor in this application is a rotary compressor, including a housing assembly 8, a motor stator 91, a motor rotor 92, and a pump body assembly. An exhaust pipe is provided on the upper cover assembly of the housing assembly 8. The motor stator 91 is fixed to the inner wall of the housing assembly 8. The motor rotor 92 is fixed to the crankshaft 7 of the pump body assembly and is placed in the inner hole of the motor stator 91. The pump body assembly is welded and fixed to the housing assembly 8. The pump body assembly includes a first flange 61, a second flange 62, and a crankshaft 7. A fixed cylinder 1 and a variable displacement cylinder 2 are provided between the first flange 61 and the second flange 62. The fixed cylinder 1 and the variable displacement cylinder 2 are separated by a partition in the middle. An upper roller, i.e., a first roller 12, and a lower roller, i.e., a second roller 22, are respectively installed in the fixed cylinder 1 and the variable displacement cylinder 2. The upper roller and the lower roller are respectively sleeved on the upper and lower eccentric parts of the crankshaft 7. A lower cover plate 621 is installed on the second flange 62. A liquid distributor component is provided outside the housing assembly 8. The first suction pipe 31 and the second suction pipe 32 of the liquid distributor component are both bent pipes, and the two suction pipes are respectively connected to the suction ports of the fixed cylinder 1 and the variable displacement cylinder 2. A lower cover is installed at the bottom of the housing assembly 8, and an upper cover assembly is installed at the upper part, thus forming a sealed cavity. The first one-way valve group 41 is a suction cut-off valve group. The high-efficiency variable displacement compressor with the suction cut-off valve group improves and avoids the leakage during the single-cylinder operation of the compressor, enhances the volumetric efficiency during the single-cylinder operation of the compressor, and improves the energy efficiency of the compressor. This application adopts the first one-way valve, i.e., the suction cut-off valve technology, which greatly reduces the leakage problem during the single-cylinder operation of the variable displacement compressor and enhances the volumetric efficiency during the single-cylinder operation. For the variable displacement rolling rotor compressor, the compressor has a variable displacement cylinder 2, which can achieve unloading and operation. At the same time, the suction of the variable displacement cylinder 2 is equipped with a suction valve group, and there is also a continuously operating cylinder. The compressor has two modes: single-cylinder operation and double-cylinder operation. This application adopts the first one-way valve, i.e., the suction cut-off valve, which greatly reduces the leakage problem during the single-cylinder operation of the variable displacement compressor and enhances the volumetric efficiency and energy efficiency during the single-cylinder operation. At the same time, the use of multiple suction cut-off valves reduces the suction resistance of the variable displacement tank cylinder and enhances the overall energy efficiency of the compressor, making the variable displacement compressor more competitive in the market.

[0028] The present application also discloses some embodiments. A valve port 21 is provided on the end face of the variable displacement cylinder 2. The valve port 21 communicates with the second suction port and the second suction pipe 32. The first one-way valve group 41 is arranged at the valve port 21. The second suction port is arranged on the upper end face or the lower end face of the variable displacement cylinder 2 of the variable displacement compressor, i.e., the lower cylinder, and a first one-way valve group 41 is correspondingly arranged. The suction valve group has the function of unidirectional passage and reverse cut-off. That is, the second suction pipe 32 of the liquid separator can only be conducted with the lower cylinder through the first one-way valve group 41, and the high pressure in the lower cylinder cannot flow back to the second suction pipe 32 of the liquid separator, avoiding the reverse flow of the high pressure in the lower cylinder to the liquid separator assembly during the single-cylinder operation of the compressor, and improving the volumetric efficiency and energy efficiency of the compressor during single-cylinder operation.

[0029] The present application also discloses some embodiments. The number of the valve ports 21 is set to two. The two valve ports 21 are respectively arranged on the two end faces of the variable displacement cylinder 2, and a first one-way valve group 41 is correspondingly arranged for each valve port 21. Arranging the first one-way valve group 41, i.e., the suction valve group, on the variable displacement cylinder 2 will increase the suction resistance of the variable displacement cylinder 2, and the power consumption during the double-cylinder operation of the compressor will increase. In order to reduce the suction resistance of the suction valve group of the variable displacement compressor, a first suction valve group can be respectively arranged on the upper and lower end faces of the variable displacement cylinder 2. Multiple suction valve groups can appropriately reduce the suction resistance of the variable displacement cylinder 2, reduce the suction power consumption of the variable displacement compressor, and further improve the energy efficiency during double-cylinder operation. Using multiple suction cut-off valves reduces the suction resistance during the double-cylinder operation of the compressor, reduces the power consumption of the compressor, and improves the energy efficiency during the double-cylinder operation of the compressor.

[0030] The present application also discloses some embodiments, characterized in that the compressor further includes a communication channel and a control valve. The communication channel communicates the first suction pipe 31 with the second suction port, and the control valve is used to control the on-off of the communication channel to further reduce the suction resistance and improve the energy efficiency of the compressor.

[0031] The present application also discloses some embodiments, characterized in that the variable displacement cylinder 2 and the fixed cylinder 1 are separated by a partition portion 5, and the control valve includes a second one-way valve group 42; a communication channel is provided on the partition portion 5, and a communication port 11 is provided on the end face of the fixed cylinder 1 close to the variable displacement cylinder 2. The communication channel connects the communication port 11 and the second suction port. The second one-way valve group 42 is provided on the fixed or partition portion 5 and is located at the communication port 11. Further reduce the suction resistance of the variable displacement cylinder 2 and improve the energy efficiency of the dual-cylinder operation of the compressor. Further, the second one-way valve group 42 is provided on the lower end face 6 of the upper cylinder or the partition portion 5, i.e., the partition plate, of the fixed cylinder 1. The second one-way valve group 42 conducts the first suction pipe 31 of the liquid separator and the variable displacement cylinder 2. At this time, when the variable displacement cylinder 2 sucks air, it can be simultaneously conducted with the second suction pipe 32 of the liquid separator and the first suction pipe 31 of the liquid separator, greatly reducing the suction resistance and improving the overall energy efficiency of the variable displacement compressor. Further, the second one-way valve group 42 is provided on the lower end face or the partition plate of the fixed cylinder 1. The second one-way valve group 42 conducts the first suction pipe 31 of the liquid separator and the variable displacement cylinder 2. At this time, the variable displacement cylinder 2 can be simultaneously conducted with the second suction pipe 32 of the liquid separator and the first suction pipe 31 of the liquid separator, further reducing the suction resistance of the variable displacement cylinder 2 and improving the energy efficiency of the dual-cylinder operation of the compressor.

[0032] The present application also discloses some embodiments. The compressor has a single-cylinder operation mode. In the single-cylinder operation mode, the fixed cylinder 1 operates, the variable displacement cylinder 2 is unloaded, the first one-way valve group 41 is closed, and the control valve controls the communication channel to be disconnected.

[0033] The present application also discloses some embodiments. The compressor has a dual-cylinder operation mode. In the dual-cylinder operation mode, both the fixed cylinder 1 and the variable displacement cylinder 2 operate, and the first one-way valve group 41 is opened so that the gas in the gas-liquid separator 3 can enter the second suction port through the second suction pipe 32; the control valve controls the communication channel to be connected, and the control valve controls the communication channel to be opened so that the gas in the gas-liquid separator 3 can enter the second suction port through the first suction pipe 31.

[0034] The present application also discloses some embodiments. When the variable volume cylinder 2 operates, the first one-way valve group 41 can be opened under the action of the pressure difference between the inlet side and the outlet side, so that the gas in the gas-liquid separator 3 enters the second suction port through the first suction pipe 31. An intake valve port 21 is provided on the upper end face or the lower end face of the variable volume cylinder 2, and the intake valve port 21 is communicated with the intake port of the variable volume cylinder 2. The intake valve port 21, the valve plate 411, the valve plate baffle 412, and the valve screw 43 together form an intake valve group. The valve plate 411 is located on the end face of the intake valve port 21, the other end face of the valve plate 411 cooperates with the valve plate baffle 412, and the valve screw 43 fixes the valve plate 411, the valve plate baffle 412 and the intake valve port 21 together to form the first intake valve group, that is, the first one-way valve group 41. Both the first intake valve group and the second suction pipe 32 of the liquid distributor have the function of one-way conduction and reverse cut-off. That is, when the variable volume cylinder 2 inhales, the intake valve plate 411 of the first intake valve group is opened under the action of the pressure difference. At this time, the gas in the second suction pipe 32 of the liquid distributor enters the lower cylinder through the intake valve port 21; when the variable volume cylinder 2 does not work, the first one-way valve group 41 is closed, and the second suction pipe 32 of the liquid distributor is in a cut-off state inside the cylinder. At this time, the high pressure in the variable volume cylinder 2 is cut off inside the variable volume cylinder 2 by the first one-way valve group 41, avoiding the leakage of the high pressure in the lower cylinder (variable volume cylinder 2) to the second suction pipe 32 of the liquid distributor during the single-cylinder operation of the compressor, improving the volumetric efficiency of the single-cylinder operation of the variable volume compressor, and further improving the single-cylinder energy efficiency of the compressor.

[0035] The present application is applicable not only to twin-rotor variable volume compressors, but also to multi-rotor variable volume compressors.

[0036] According to an embodiment of the present application, an air conditioner is provided, including a compressor, and the compressor is the above-mentioned compressor.

[0037] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous ways can be freely combined and superimposed.

[0038] The above are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art in the technical field of the present application, without departing from the technical principle of the present application, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A compressor, characterized in that, Comprising: A fixed cylinder (1) having a first suction port; A variable - volume cylinder (2) having a second suction port; A gas - liquid separator (3) having a first suction pipe (31) and a second suction pipe (32), the first suction pipe (31) communicating with the first suction port; And a first one - way valve group (41), the inlet of the first one - way valve group (41) communicating with the second suction pipe (32), the outlet of the first one - way valve group (41) communicating with the second suction port; a valve port (21) is provided on the end face of the variable - volume cylinder (2), the valve port (21) communicating the second suction port with the second suction pipe (32), and the first one - way valve group (41) is arranged at the valve port (21); The number of the valve ports (21) is set to two, the two valve ports (21) are respectively arranged on the two end faces of the variable - volume cylinder (2), and each valve port (21) is correspondingly provided with the first one - way valve group (41); When the variable - volume cylinder (2) operates, the first one - way valve group (41) can be opened under the action of the pressure difference between the inlet side and the outlet side, so that the gas in the gas - liquid separator (3) enters the second suction port through the first suction pipe (31); The compressor further includes a communication channel and a control valve, the communication channel communicating the first suction pipe (31) with the second suction port, and the control valve is used to control the on - off of the communication channel.

2. The compressor according to claim 1, characterized in that , The variable - volume cylinder (2) is separated from the fixed cylinder (1) by a partition part (5), and the control valve includes a second one - way valve group (42); The communication channel is arranged on the partition part (5), a communication port (11) is provided on the end face of the fixed cylinder (1) close to the variable - volume cylinder (2), the communication channel communicates the communication port (11) with the second suction port, and the second one - way valve group (42) is arranged on the fixed cylinder (1) or the partition part (5) and is located at the communication port (11).

3. The compressor according to claim 1, characterized in that, The compressor has a single - cylinder operation mode. In the single - cylinder operation mode, the fixed cylinder (1) operates, the variable - volume cylinder (2) is unloaded, the first one - way valve group (41) is closed, and the control valve controls the communication channel to be disconnected.

4. The compressor according to claim 1, wherein, The compressor has a double - cylinder operation mode. In the double - cylinder operation mode, both the fixed cylinder (1) and the variable - volume cylinder (2) operate, the first one - way valve group (41) is opened so that the gas in the gas - liquid separator (3) can enter the second suction port through the second suction pipe (32); The control valve controls the communication channel to be connected, and the control valve controls the communication channel to be opened so that the gas in the gas - liquid separator (3) can enter the second suction port through the first suction pipe (31).

5. An air conditioner, comprising a compressor, characterized in that, The compressor is the compressor according to any one of claims 1 - 4.

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