A variable capacity compression structure, compressor and air conditioner

Abstract

The present invention provides a variable capacity compression structure, a compressor and an air conditioner. The variable capacity compression structure comprises: a cylinder (5), the cylinder comprises a first end face located at one axial end thereof and a second end face located at the other axial end thereof, and a first flange (4) is arranged at the first end face, and / or a second flange is arranged at the second end face, and at least one variable capacity hole (41) is arranged on the first flange (4) and / or the second flange, and the variable capacity hole (41) can be communicated with the internal chamber of the cylinder (5) to guide the gas in the internal chamber out of the cylinder (5) through the variable capacity hole (41). Through the present invention, the gas in the internal chamber can be discharged to the outside of the compressor cylinder through the variable capacity hole, so as to realize the pressure difference-free operation of the compressor, thereby realizing the rapid startup and variable capacity compression of the compressor, and achieving the purpose of energy saving.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a variable capacity compression structure, a compressor and an air conditioner. Background Art

[0002] When a conventional compressor is started, the pressure difference may cause the compressor to fail to start successfully, especially when the compressor needs to be started and stopped frequently. At the same time, as the country's requirements for energy conservation continue to increase, the compressor needs to operate at a more ideal working point to avoid energy waste.

[0003] Since the compressor in the prior art has technical problems such as failure to start the compressor or slow startup due to the existence of pressure difference, especially failure to start the compressor when the compressor needs to be frequently started and stopped, the present invention studies and designs a variable capacity compression structure, a compressor and an air conditioner. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the compressor in the prior art that the compressor may fail to start due to the existence of pressure difference and other reasons, thereby providing a variable capacity compression structure, a compressor and an air conditioner.

[0005] The present invention provides a variable capacitance compression structure, which comprises:

[0006] A cylinder, the cylinder comprising a first end face located at one axial end thereof and a second end face located at the other axial end thereof, and a first flange is arranged at the first end face, and / or a second flange is arranged at the second end face, and at least one variable volume hole is arranged on the first flange and / or the second flange, and the variable volume hole can be communicated with the internal chamber of the cylinder to guide the gas in the internal chamber out of the cylinder through the variable volume hole.

[0007] Preferably,

[0008] The axis of the cylinder extends in a vertical direction, and the first end face is a lower end face, the first flange is a lower flange, the variable volume hole is arranged on the upper end face of the lower flange and extends vertically downward in the axial direction; and / or, there are more than two variable volume holes, and they are dispersedly arranged on the first flange.

[0009] Preferably,

[0010] The first flange is provided with an exhaust valve sheet capable of opening or closing the variable volume hole.

[0011] Preferably,

[0012] The exhaust valve plate is also provided with a valve plate baffle for limiting the axial displacement of the exhaust valve plate.

[0013] Preferably,

[0014] An air supply channel is also provided inside the first flange, and the air supply channel can be communicated with the variable volume hole, and the communication or closing between the air supply channel and the variable volume hole is controlled by the exhaust valve sheet.

[0015] Preferably,

[0016] When the air supply pressure in the air supply channel is lower than the compression chamber pressure inside the cylinder, the exhaust valve plate can be opened; when the air supply pressure in the air supply channel is higher than the compression chamber pressure inside the cylinder, the exhaust valve plate can be closed.

[0017] Preferably,

[0018] There are more than two gas-injection channels, and the gas-injection pressures of the multiple gas-injection channels are not completely the same. Each of the gas-injection channels is connected to the variable-volume holes in a one-to-one correspondence.

[0019] Preferably,

[0020] The cylinder includes an air intake port: the area of ​​the variable volume hole is greater than or equal to the cross-sectional area of ​​the air intake port; or, when there are more than two variable volume holes, the total area of ​​the more than two variable volume holes is greater than or equal to the cross-sectional area of ​​the air intake port.

[0021] The present invention also provides a compressor, which comprises the variable capacity compression structure described in any of the preceding items.

[0022] The present invention also provides an air conditioner, which includes the variable capacity compression structure or the aforementioned compressor as described in any of the preceding items.

[0023] The variable capacity compression structure, compressor and air conditioner provided by the present invention have the following beneficial effects:

[0024] The present invention can discharge the gas in the internal chamber through the variable volume hole by arranging the variable volume hole on the first flange and / or the second flange opposite to the internal chamber (compression chamber) of the cylinder. Especially when the compressor is started, the variable volume hole is opened and the gas in the cylinder chamber is discharged out of the cylinder through the variable volume hole, so that the refrigerant is directly discharged from the variable volume hole into the outside of the compressor cylinder and the inside of the shell, thereby realizing the pressure difference-free operation of the compressor, thereby realizing the rapid start-up of the compressor; and the variable volume compression effect of the compressor can be realized through the gas outlet of the variable volume hole; multiple air supply channels are set to multiple certain air supply pressures. When the air supply pressure is less than the compression chamber pressure, the valve plate on the variable volume hole is opened. According to different capacity requirements, multiple variable volume holes can be set to be opened or closed to realize variable volume compression, thereby ultimately achieving the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the top view of the variable capacitance compression structure of the present invention;

[0026] Figure 2 It is a bottom view schematic diagram of the lower flange of the variable capacity compression structure of the present invention;

[0027] Figure 3 It is a front cross-sectional schematic diagram of the variable capacity compression structure of the present invention.

[0028] The reference numerals in the figure represent:

[0029] 1. Sliding vane; 2. Roller; 3. Crankshaft; 4. First flange (or lower flange); 41. Variable volume hole; 42. Air supply channel; 43. Exhaust valve plate; 5. Cylinder; 51. Exhaust hole. DETAILED DESCRIPTION

[0030] like Figure 1-3 As shown, the present invention provides a variable capacitance compression structure, which includes:

[0031] Cylinder 5, the cylinder includes a first end face located at one axial end thereof and a second end face located at the other axial end thereof, and a first flange 4 is arranged at the first end face, and / or a second flange (not shown) is arranged at the second end face, and at least one variable volume hole 41 is arranged on the first flange 4 and / or the second flange, and the variable volume hole 41 can be connected with the internal chamber of the cylinder 5 to guide the gas in the internal chamber out of the cylinder 5 through the variable volume hole 41, and the variable volume hole 41 is not connected with the exhaust hole 51 (crescent mouth in the figure) of the cylinder 5 (that is, the variable volume hole is not a hole on the flange that is usually connected with the exhaust hole on the cylinder, that is, it is not an exhaust port for discharging the high-pressure gas compressed in the cylinder out of the cylinder, nor is it connected with the intake port of the cylinder; but it is a hole structure opened on this basis and opposite to the cylinder compression chamber that can directly guide the gas in the compression chamber, that is, an exhaust port of intermediate pressure), and is not connected to the intake port of the cylinder 5.

[0032] The present invention can discharge the gas in the internal chamber through the variable volume hole by arranging the variable volume hole on the first flange and / or the second flange opposite to the internal chamber (compression chamber) of the cylinder. Especially when the compressor is started, the variable volume hole is opened and the gas in the cylinder chamber is discharged out of the cylinder through the variable volume hole, so that the refrigerant is directly discharged from the variable volume hole into the outside of the compressor cylinder and the inside of the shell, thereby realizing the pressure difference-free operation of the compressor, thereby realizing the rapid start-up of the compressor; and the variable volume compression effect of the compressor can be realized through the gas outlet of the variable volume hole; multiple air supply channels are set to multiple certain air supply pressures. When the air supply pressure is less than the compression chamber pressure, the valve plate on the variable volume hole is opened. According to different capacity requirements, multiple variable volume holes can be set to be opened or closed to realize variable volume compression, thereby ultimately achieving the purpose of energy saving.

[0033] Preferably,

[0034] The axis of the cylinder 5 extends in the vertical direction, and the first end face is the lower end face, the first flange 4 is the lower flange, the variable volume hole 41 is arranged on the upper end face of the lower flange, and extends vertically downward in the axial direction, penetrating or not penetrating the upper and lower end faces of the lower flange; and / or, there are more than two variable volume holes 41, and they are dispersedly arranged on the first flange 4. This is the preferred structural form of the cylinder of the present invention, as well as the preferred structural form of the first flange, and the preferred setting form of the variable volume hole, which can guide the gas in the cylinder downward in the axial direction, and the variable volume hole is multiple, which can play a guiding role at multiple positions in the compression chamber, improving the ability of rapid startup and the ability of variable volume compression.

[0035] Preferably,

[0036] The first flange 4 is provided with an exhaust valve sheet 43 capable of opening or closing the variable volume hole 41. It is further preferred that the variable volume hole 41 extends axially and vertically downward from the upper end surface of the first flange 4 and penetrates the lower end surface thereof, and the exhaust valve sheet 43 is provided at the lower end surface. The exhaust valve sheet can be provided to control the exhaust of gas from the variable volume hole.

[0037] Preferably,

[0038] The exhaust valve plate 43 is also provided with a valve plate baffle for limiting the axial displacement of the exhaust valve plate. The valve plate baffle can stop the exhaust valve plate, thereby ensuring its effective return and preventing excessive movement.

[0039] Preferably,

[0040] The first flange 4 is also provided with an air supply channel 42 inside, and the air supply channel 42 can be communicated with the variable volume hole 41, and the communication or closing between the air supply channel 42 and the variable volume hole 41 is controlled by the exhaust valve plate 43. The air supply channel can be arranged in cooperation with the variable volume hole, and the gas guided out of the cylinder by the variable volume hole is guided out through the air supply channel, for example, to a position inside the compressor housing and outside the cylinder, thereby achieving the purpose of rapid startup of the compressor and variable volume compression.

[0041] Preferably,

[0042] When the air supply pressure in the air supply channel 42 is less than the compression chamber pressure inside the cylinder, the exhaust valve plate 43 can be opened to achieve variable volume compression; when the air supply pressure in the air supply channel 42 is greater than the compression chamber pressure inside the cylinder, the exhaust valve plate 43 can be closed, and the compressor operates normally. This is the structural form of the air supply channel and the exhaust valve plate of the present invention to achieve variable volume compression. Variable volume operation mode: when the refrigerant enters the cylinder 5 through the air intake port of the cylinder 5, multiple air supply channels can be set to multiple certain air supply pressures respectively. When the air supply pressure is less than the compression chamber pressure, at this time, the valve plate on the variable volume hole 41 is opened. According to different capacity requirements, multiple variable volume holes 41 can be set to open or close to achieve variable volume compression, and finally achieve the purpose of energy saving.

[0043] Preferably,

[0044] There are more than two air supply channels 42, and the air supply pressures of the multiple air supply channels 42 are not completely the same. Each of the air supply channels 42 is connected and arranged in a one-to-one correspondence with the variable volume hole 41. The multiple air supply channels are set to multiple certain air supply pressures. When the air supply pressure is less than the compression chamber pressure, the valve plate on the variable volume hole 41 is opened. According to different capacity requirements, multiple variable volume holes 41 can be set to be opened or closed to achieve variable volume compression, and finally achieve the purpose of energy saving.

[0045] Preferably,

[0046] The cylinder 5 includes an air intake port, and the area of ​​the variable volume hole 41 is greater than or equal to the cross-sectional area of ​​the air intake port; or, when there are more than two variable volume holes 41, the total area of ​​the more than two variable volume holes 41 is greater than or equal to the cross-sectional area of ​​the air intake port. This is the preferred relationship between the area of ​​the variable volume hole and the area of ​​the air intake port of the present invention. The total area of ​​the variable volume hole 41 is greater than or equal to the cross-sectional area of ​​the air intake port of the cylinder 5, realizing the pressure difference-free operation of the compressor, thereby realizing rapid startup. While considering the area of ​​the variable volume hole 41, the number of the variable volume holes is determined according to actual operation requirements.

[0047] The present invention also provides a compressor, which includes the variable volume compression structure described in any of the preceding items. The present invention can lead out the gas in the internal chamber through the variable volume hole, especially when the compressor is started, by opening the variable volume hole and leading the gas in the cylinder chamber out of the cylinder through the variable volume hole, so that the refrigerant is directly discharged from the variable volume hole into the outside of the compressor cylinder and the inside of the shell, so that the compressor can be operated without pressure difference, thereby realizing the rapid start of the compressor; and through the role of leading out the gas through the variable volume hole, the role of variable volume compression of the compressor can be achieved.

[0048] The present invention also provides an air conditioner, which includes the variable volume compression structure or the aforementioned compressor described in any of the preceding items. The present invention can lead out the gas in the internal chamber through the variable volume hole, especially when the compressor is started, by opening the variable volume hole and leading the gas in the cylinder chamber out of the cylinder through the variable volume hole, so that the refrigerant is directly discharged from the variable volume hole into the outside of the compressor cylinder and the inside of the shell, realizing the pressure difference-free operation of the compressor, thereby realizing the rapid start of the compressor; and through the role of leading out the gas through the variable volume hole, the role of variable volume compression of the compressor can be achieved.

[0049] A sealed valve plate is installed on the variable volume hole 41, and a valve plate baffle for limiting the axial displacement of the valve plate is installed on the valve plate. When the inlet air pressure is less than the compression chamber pressure, the valve plate opens to achieve variable volume compression; when the inlet air pressure is greater than the compression chamber pressure, the compressor operates normally.

[0050] like Figure 1 The variable capacity compression structure of the present invention is shown in FIG. The present invention arranges a plurality of variable capacity holes 41 on the first flange 4 of the rotary compressor to achieve rapid startup of the compressor and variable capacity operation of the compressor.

[0051] The present invention has two working modes: 1. Quick start mode; 2. Variable capacity operation mode.

[0052] Quick start mode: When the refrigerant enters the cylinder 5 through the air intake port of the cylinder 5, the pressure of the air supply channel 42 of the first flange 4 is set to be lower than the air intake pressure. The valve plate on the variable volume hole 41 is opened, and the refrigerant is directly discharged from the variable volume hole 41 into the compressor, so that the compressor can be operated without pressure difference and quickly started.

[0053] Variable volume operation mode: when the refrigerant enters the cylinder 5 through the air intake port of the cylinder 5, the multiple air supply channels can be set to multiple certain air supply pressures respectively. When the air supply pressure is lower than the compression chamber pressure, the valve plate on the variable volume hole 41 opens. According to different capacity requirements, multiple variable volume holes 41 can be opened or closed to realize variable volume compression, thereby achieving energy saving.

[0054] The total area of ​​the variable volume holes 41 is greater than or equal to the cross-sectional area of ​​the air intake of the cylinder 5, so that the compressor can operate without pressure difference, thereby achieving rapid startup. While considering the area of ​​the variable volume holes 41, the number of the variable volume holes is determined according to actual operation requirements.

[0055] The opening and closing of the variable volume hole 41 is affected by the supplementary air pressure. A sealed valve plate is installed on the variable volume hole 41. A valve plate baffle for limiting the axial displacement of the valve plate is installed on the valve plate. When the supplementary air pressure is less than the compression chamber pressure, the valve plate opens to realize variable volume compression; when the supplementary air pressure is greater than the compression chamber pressure, the compressor operates normally.

[0056] The variable volume holes of the present invention can be arranged on the exhaust side or the intake side. As many variable volume holes as possible can be arranged if space permits, so as to achieve rapid start-up and multi-volume operation of the compressor and improve the universality of the compressor.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A variable capacity compression structure, characterized in that: include: A cylinder (5), the cylinder comprising a first end face located at one axial end thereof and a second end face located at the other axial end thereof, a first flange (4) being arranged at the first end face, and / or a second flange being arranged at the second end face, and at least one variable volume hole (41) being arranged on the first flange (4) and / or the second flange, the variable volume hole (41) being capable of communicating with an internal chamber of the cylinder (5) so as to guide gas in the internal chamber out of the cylinder (5) through the variable volume hole (41); The first flange (4) is provided with an exhaust valve plate (43) capable of opening or closing the variable volume hole (41); the first flange (4) is also provided with an air supply channel (42) inside, the air supply channel (42) can be communicated with the variable volume hole (41), and the communication or closing between the air supply channel (42) and the variable volume hole (41) is controlled by the exhaust valve plate (43); when the air supply pressure in the air supply channel (42) is lower than the compression chamber pressure in the cylinder, the exhaust valve plate (43) can be opened, and the air supply channel can be arranged in cooperation with the variable volume hole, so that the gas discharged from the cylinder by the variable volume hole can be discharged through the air supply channel, thereby realizing rapid startup and variable volume compression of the compressor; The exhaust valve plate (43) is also provided with a valve plate baffle for limiting the axial displacement of the exhaust valve plate.

2. The variable capacitance compression structure according to claim 1, characterized in that: The axis of the cylinder (5) extends in a vertical direction, and the first end face is a lower end face, the first flange (4) is a lower flange, and the variable volume hole (41) is arranged on the upper end face of the lower flange and extends vertically downward in the axial direction; and / or, there are more than two variable volume holes (41) and they are dispersedly arranged on the first flange (4).

3. The variable capacitance compression structure according to claim 1, characterized in that: When the air supply pressure in the air supply channel (42) is greater than the compression chamber pressure inside the cylinder, the exhaust valve plate (43) can be closed.

4. The variable capacitance compression structure according to claim 1, characterized in that: There are more than two gas-supply channels (42), and the gas-supply pressures of the multiple gas-supply channels (42) are not completely the same. Each gas-supply channel (42) is connected to the variable volume hole (41) in a one-to-one correspondence.

5. The variable capacitance compression structure according to any one of claims 1 to 4, characterized in that: The cylinder (5) comprises an air intake port, and the area of ​​the variable volume hole (41) is greater than or equal to the cross-sectional area of ​​the air intake port; or, when there are more than two variable volume holes (41), the total area of ​​the more than two variable volume holes (41) is greater than or equal to the cross-sectional area of ​​the air intake port.

6. A compressor, characterized in that: The invention comprises the variable capacity compression structure as described in any one of claims 1 to 5.

7. An air conditioner, characterized in that: It comprises the variable capacity compression structure described in any one of claims 1 to 5 or the compressor described in claim 6.

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