CN218760419U - Variable-capacity cylinder and compressor comprising same - Google Patents
Variable-capacity cylinder and compressor comprising same Download PDFInfo
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- CN218760419U CN218760419U CN202120030931.1U CN202120030931U CN218760419U CN 218760419 U CN218760419 U CN 218760419U CN 202120030931 U CN202120030931 U CN 202120030931U CN 218760419 U CN218760419 U CN 218760419U
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- cylinder
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Abstract
The utility model provides a variable capacity cylinder reaches compressor including it, variable capacity cylinder is including intercommunication passageway, accuse pressure device to and the control valve between the two, accuse pressure device can press operating mode switching low pressure or high pressure. The full displacement and the partial displacement of the compressor are switched through the control of the built-in control valve of the compressor, the application range of the compressor can be widened, and meanwhile, the purpose of saving energy consumption can be achieved in transition seasons.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a variable capacity cylinder reaches compressor including it.
Background
Seasonal temperature differentials require switching of the compressor between full and minimal load. With a fixed nominal displacement of the compressor, the variation of the displacement output by the compressor can generally be achieved only by varying the speed of rotation of the compressor. Because of the reliability problems of oil supply in a driving system and a compressor, and the like, the ultra-low rotating speed cannot be realized sometimes; but there is no better way to achieve a displacement change between full compressor load and very small load.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a variable displacement cylinder reaches compressor including it aims at being controlled the circulation of air current between intercommunication passageway and the accuse pressure device by the control valve, to variable displacement cylinder exhaust angle, and then adjusts the displacement, realizes the switching of compressor between rated discharge capacity and partial discharge capacity. And simultaneously, the utility model discloses realize totally at the inside of the casing of compressor, do not influence the installation of compressor.
The utility model provides a variable capacity cylinder, including cylinder body, bent axle, gleitbretter, piston, intercommunication passageway, accuse pressure equipment and control valve, the piston housing is located the outside of bent axle, wherein:
the first end of the communication channel is connected with a cavity formed by enclosing the cylinder body, the crankshaft and the piston, the slide sheet is elastically abutted against the piston to divide the cavity into an air inlet cavity and an air exhaust cavity, and the second end of the communication channel is connected with the control valve;
the control valve is communicated with the communicating channel and the pressure control device so as to control the air flow between the communicating channel and the pressure control device.
Optionally, the pressure control device is a pressure control cavity or a pressure control pipeline.
Optionally, the cylinder body includes a cylinder, an upper cylinder cover and a lower cylinder cover, and the control valve is disposed on a side surface of the cylinder, the upper cylinder cover or the lower cylinder cover.
Optionally, when the control valve is arranged on the side surface of the cylinder, the communication channel is located on the opposite side of the position of the sliding sheet on the circumference of the side surface of the cylinder, the position of the sliding sheet is set to be 0 degree as a reference, and the communication channel is arranged between 150 degrees and 230 degrees and used for controlling the exhaust angle of the cylinder when the piston operates.
Optionally, the communication channel is provided between 160 ° and 200 °.
Optionally, the control valve is configured to be in an open or closed state, and the air displacement in the cavity is controlled by controlling the air pressure in the pressure control device; when the control valve is closed and the piston moves to the angle of the position of the communication channel, the air pressure in the exhaust cavity is P.
Optionally, the air pressure of the pressure control device includes a first air pressure and a second air pressure, the first air pressure is configured to be greater than or equal to the air pressure P of the exhaust cavity and less than or equal to the exhaust air pressure of the cylinder, and the second air pressure is configured to be less than the air pressure P of the exhaust cavity and greater than or equal to the intake air pressure of the cylinder.
Optionally, the control valve is a solenoid valve or a mechanical valve.
Optionally, the mechanical valve is a one-way valve, a vent valve plate or a three-way valve.
Optionally, the cylinder comprises first cylinder and second cylinder, be equipped with the intermediate lamella that plays the separating action between first cylinder and the second cylinder, the intermediate lamella divide into intermediate lamella and lower intermediate lamella, go up intermediate lamella and lower intermediate lamella and be equipped with respectively the control valve.
Optionally, the control valve includes an upper cylinder control valve disposed on the upper middle plate, and a lower cylinder control valve disposed on the lower middle plate, and the open and close states of the upper cylinder control valve and the lower cylinder control valve are independent of each other.
The utility model discloses a compressor is equipped with above-mentioned arbitrary one in the casing of compressor varactor volume cylinder.
Compared with the prior art, the utility model beneficial effect lie in:
the utility model discloses a flow circulation between control valve control intercommunication passageway and the accuse pressure equipment is to variable displacement cylinder exhaust angle, and then adjusts the displacement, realizes the switching of compressor between full discharge capacity and partial discharge capacity, and the use of compressor has been widened in the energy saving in transition season. And simultaneously, the utility model discloses realize totally at the casing inside of compressor, do not influence the installation of compressor.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a cross-sectional profile view of a prior art cylinder of the present invention;
fig. 2 is a longitudinal sectional view of a cylinder according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of the cylinder according to an embodiment of the present invention.
Reference numerals
1. Cylinder
11. Sliding vane
12. Air inlet cavity
13. Exhaust cavity
14. Piston
15. Cylinder body
2. First cylinder
21. Upper cylinder cover
22. Upper middle plate
23. Upper cylinder control valve
3. The second cylinder
31. Lower cylinder cover
32. Lower middle plate
33. Lower cylinder control valve
4. Pressure control device
5. Communicating channel
6. Control valve
7. Exhaust angle
Detailed Description
Detailed descriptions will be given below of embodiments of the present invention. Although the invention will be described and illustrated in connection with certain specific embodiments, it should be understood that the invention is not limited to these embodiments. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the invention as defined by the appended claims.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the invention. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and components have not been shown in detail in order not to obscure the invention.
The "vertical" direction herein refers to the axial direction of the compressor, the "horizontal" plane refers to a plane parallel to the cross-section of the compressor, and the "outward" direction refers to a direction axially away from the compressor.
In order to solve the technical problem, the utility model provides a variable capacity cylinder, including cylinder body 15, bent axle, gleitbretter 11, piston 14, intercommunication passageway 5, accuse pressure equipment and control valve 6, the outside of bent axle is located to the piston bush.
As shown in fig. 1, the cavity of the compressor is enclosed by a cylinder 15, a crankshaft and a piston 14. The slide 11 elastically abuts against the piston 14 and divides the chamber into an intake chamber 12 and an exhaust chamber 13. The cylinder block 15 includes a cylinder 1, an upper cylinder head 21, and a lower cylinder head 31. During the operation of the cylinder 1, the piston 14 rotates along the inner wall of the cylinder 15 under the driving of the crankshaft, and the sliding vane 11 and the piston 14 reciprocate in a collision manner, so that the volumes of the air inlet cavity 12 and the air outlet cavity 13 are changed continuously. The cylinder body 15 is provided with an air inlet and an air outlet. Each rotation cycle of the piston 14 includes an intake cycle portion and an exhaust cycle portion. When the air pressure of the exhaust cavity 13 reaches a threshold value, the air outlet is opened for exhausting. When the rotating speed of the cylinder 1 is unchanged, the time when the air outlet is opened for exhausting air is basically fixed in each rotating period of the piston 14. In other words, the ratio of the intake period and the exhaust period constituting the rotation period of the piston 14 is substantially fixed. In most cases, when the piston 14 rotates counterclockwise to an interval of 150 ° to 230 ° with the position of the vane 11 being 0 °, the pressure of the exhaust chamber 13 reaches a threshold value, and the outlet is opened to start exhaust. The discharge angle of the discharge chamber 13 is substantially in the interval 150 ° to 230 °. When the cylinder 1 is at the lowest rotating speed, the cylinder 1 can change the exhaust angle, and exhausts air not at the rated displacement but at partial displacement, thereby playing the role of saving energy consumption.
In one embodiment of the present invention, the first end of the communicating channel 5 is connected to the cavity, and the second end of the communicating channel 5 is connected to the control valve 6; the cylinder body 15 comprises a cylinder 1, an upper cylinder cover 21 and a lower cylinder cover 31, the control valve 6 is arranged on the side surface 15 of the cylinder, and the control valve 6 is communicated with the communication channel 5 and the pressure control device so as to control the air flow between the communication channel 5 and the pressure control device. The control valve 6 is configured to be in an open or closed state, and intervenes the pressure in the cavity by controlling the pressure in the pressure control device 4, so as to control the exhaust amount.
Specifically, when the piston 14 rotates counterclockwise to the exhaust position, if the control valve 6 is in an open state, the pressure control device is communicated with the cavity, if the pressure in the pressure control device is equal to the pressure in the exhaust cavity 13, the air pressure in the exhaust cavity 13 is maintained, the time for opening the air outlet to exhaust is unchanged, the proportion of the air outlet period in the whole rotation period of the piston 14 is unchanged, and the displacement of the cylinder 1 is the rated displacement; if the pressure in the pressure control device is less than or equal to the pressure in the exhaust cavity 13, the air pressure in the exhaust cavity 13 is reduced, the time for opening the air outlet to exhaust is delayed, the proportion of the air outlet period in the whole rotation period of the piston 14 is reduced, and the displacement of the cylinder 1 is reduced.
In another embodiment, when the control valve 6 is closed, the air pressure in the exhaust chamber 13 when the piston 14 moves to the communication passage 5 is P. The pressure in the pressure control device 4 is set to be a first air pressure or a second air pressure, the first air pressure is configured to be greater than the air pressure P of the exhaust cavity and less than or equal to the exhaust air pressure of the cylinder, and the second air pressure is configured to be less than the air pressure P of the exhaust cavity and greater than or equal to the intake air pressure of the cylinder. The pressure in the pressure control device 4 may be switched between the first air pressure and the second air pressure to control the angle at which the exhaust chamber 13 starts to exhaust. When the pressure in the pressure control device 4 is the second air pressure, the air pressure in the exhaust cavity is gradually increased before the piston moves anticlockwise to the position of the communicating channel 5 from 0 degrees, when the air pressure in the exhaust cavity is increased to exceed the pressure in the pressure control device 4, the control valve 6 is opened, the exhaust cavity 13 is communicated with the pressure control device 4, the air pressure in the exhaust cavity is released to the pressure control device 4 through the communicating channel 5, and the air pressure in the exhaust cavity is reduced. The piston continues to rotate counterclockwise after moving to the communication passage 5, at which time the communication passage 5 is located in the intake chamber 12 and the control valve 6 is closed. During the period of time that the control valve 6 is opened, the pressure of the exhaust cavity 13 is released, the exhaust angle is increased, the exhaust time is delayed, the exhaust period is shortened, the exhaust is carried out at the rate less than the rated displacement, and partial unloading is realized. When the pressure in the pressure control device 4 is switched to the first air pressure, the control valve 6 is kept in a closed state in the whole period of the cylinder, and the cylinder operates normally. That is, when the air pressure of the pressure control device 4 is the second air pressure, the air cylinder in the embodiment is in the operation state lower than the rated displacement, which is beneficial to saving energy of the compressor; when the pressure of the pressure control device is the first air pressure, the air pressure of the pressure control device 4 has no influence on the displacement of the air cylinder 1, and the displacement of the compressor returns to the rated displacement.
In one embodiment of the invention, the communication channel is provided between 150 ° and 230 ° for controlling the exhaust angle of the cylinder when the piston is in operation. Further, the communication passage is provided between 160 ° and 200 ° to reduce the influence of the pressure control device on the exhaust gas pressure.
The position of the communication passage 5 is adjustable. When the angle of the position of the communication channel 5 is increased, the air pressure P of the exhaust cavity 13 is increased when the piston 14 reaches the angle, and the minimum value of the first air pressure and the maximum value of the second air pressure are correspondingly increased; conversely, when the angle at which the communication passage 5 is located becomes smaller, the air pressure in the exhaust chamber 13 becomes smaller when the piston 14 reaches the angle, and the minimum value of the first air pressure and the maximum value of the second air pressure become smaller accordingly. That is, the minimum value of the first air pressure and the maximum value of the second air pressure are both critical values of the P value. The magnitude of P determines the range of the first air pressure and the second air pressure. In the range of the second gas pressure, increasing or decreasing the second gas pressure has a direct effect on the release rate of the gas in the exhaust chamber 13 after the control device 6 is opened. The smaller the second air pressure, the greater its difference with the value P, the earlier the partial unloading starts, the faster the pressure in the exhaust chamber 13 is released and the larger the exhaust angle. In the extreme case, the second air pressure is equal to the inlet air pressure, and the air pressure in the exhaust chamber 13 exceeds the second air pressure beyond the 0 ° position from the piston. The control valve 6 opens the exhaust until it closes after the piston 14 reaches the position of the communication passage 5.
In one embodiment, as shown in fig. 2, the cylinder 1 is composed of a first cylinder 2 and a second cylinder 3, a separating middle plate is arranged between the first cylinder 2 and the second cylinder 3, the middle plate is divided into an upper middle plate 22 and a lower middle plate 32, and the upper middle plate 22 and the lower middle plate 32 are respectively provided with a control valve 6.
In this embodiment, the control valve 6 includes an upper cylinder control valve 23 provided on the upper intermediate plate 22, and a lower cylinder control valve 33 provided on the lower intermediate plate 32, and the open and closed states of the upper cylinder control valve 23 and the lower cylinder control valve 33 are independent of each other. Thus, the amount of exhaust gas of the first cylinder 2 and the amount of exhaust gas of the second cylinder 3 can be controlled individually and in different combinations. For example, the first cylinder 2 exhausts according to the rated displacement, the second cylinder 3 exhausts below the rated displacement, and the total exhaust volume of the compressor is between, so that the fine control is realized and the energy is further saved by combining a single-cylinder operation mode or a multi-cylinder operation mode.
Optionally, the pressure control device 4 is a pressure control cavity or a pressure control pipeline. As shown in fig. 2, when the pressure control device 4 is a pressure control chamber, the pressure control chamber is disposed on the upper middle plate 22 and the lower middle plate 32, and the control valve 6 communicates the communicating channel 5 and the pressure control chamber to control the air flow between the communicating channel 5 and the pressure control chamber. The control valve 6 is configured to be in an open or closed state, and intervenes the pressure in the cavity by controlling the pressure in the pressure control cavity, so as to control the exhaust amount. When the pressure control device 4 is a pressure control pipeline, the pressure control pipeline is communicated with the communication channel 5 through a control valve 6, and the pressure control pipeline leads to the outside of the cylinder 1.
In other embodiments, the control valve 6 is provided on the upper cylinder head 21 or the lower cylinder head 31.
Alternatively, the control valve 6 is a solenoid valve or a mechanical valve.
When the control valve 6 is a mechanical valve, the mechanical valve is a one-way valve, an exhaust valve plate or a three-way valve. The gas can only flow from the chamber to the pressure control device along the communication channel 5, but cannot flow from the pressure control device to the chamber, so that the gas is divided, the pressure of the exhaust chamber 13 is properly reduced, and the time for the pressure of the exhaust chamber 13 to reach the threshold value in the whole rotation period of the piston 14 is delayed backwards.
There may be more than one pressure control device 4. When there are a plurality of pressure control devices 4, each pressure control device 4 maintains its set pressure, and the control valves 6 connected to the plurality of pressure control devices 4 switch between the pressure control devices 4. In one embodiment, there are two pressure control chambers. The mechanical valve is a three-way valve, the three-way valve is simultaneously connected with the two pressure control cavities, and the gas in the exhaust cavity 13 can be introduced into any one of the two pressure control cavities by switching of the three-way valve.
The embodiment of the utility model provides a compressor still is provided, be equipped with above-mentioned arbitrary one in the casing of compressor varactor volume cylinder.
To sum up, the utility model discloses a variable capacity cylinder compares with compressor including it with prior art, has following advantage:
1. the control valve controls the air flow between the communicating channel and the pressure control device, the exhaust angle of the variable-capacity cylinder is adjusted, the exhaust capacity is adjusted, the switching of the compressor between full displacement and partial displacement is realized, the energy consumption is saved in transition seasons, and the use of the compressor is widened.
2. The utility model discloses realize completely inside the casing of compressor, do not occupy extra installation space, do not influence the installation of compressor.
The foregoing is a further detailed description of the present invention in conjunction with specific alternative embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these specific details. To the utility model discloses to the ordinary skilled person in technical field's the prerequisite that does not deviate from the utility model discloses under the design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (12)
1. A variable-capacity cylinder comprises a cylinder body, a crankshaft, a sliding vane, a piston, a communication channel, a pressure control device and a control valve, wherein the piston is sleeved outside the crankshaft, and the variable-capacity cylinder comprises:
the first end of the communication channel is connected with a cavity formed by enclosing the cylinder body, the crankshaft and the piston, the slide sheet is elastically abutted against the piston to divide the cavity into an air inlet cavity and an air exhaust cavity, and the second end of the communication channel is connected with the control valve;
the control valve is communicated with the communicating channel and the pressure control device so as to control the air flow between the communicating channel and the pressure control device.
2. A variable capacity cylinder according to claim 1, wherein the pressure control device is a pressure control chamber or a pressure control pipe.
3. The capacity-variable cylinder according to claim 1, wherein the cylinder block includes a cylinder, an upper cylinder head, and a lower cylinder head, and the control valve is provided to a side surface of the cylinder, the upper cylinder head, or the lower cylinder head.
4. A variable capacity cylinder according to claim 3, wherein the control valve is provided at a side of the cylinder, the communication passage is provided at a side opposite to a position of a vane on a circumference of the side of the cylinder, the position of the vane is set to 0 ° as a reference, and the communication passage is provided at an angle of 150 ° to 230 ° for controlling a discharge angle of the cylinder when the piston operates.
5. A variable capacity cylinder according to claim 4, wherein the communication passage is provided between 160 ° and 200 °.
6. The variable displacement cylinder according to claim 1, wherein the control valve is configured to be in an open or closed state, and an amount of exhaust gas in the chamber is controlled by controlling a gas pressure in the pressure control device; when the control valve is closed and the piston moves to the angle of the position of the communication channel, the air pressure in the exhaust cavity is P.
7. The variable capacity cylinder according to claim 6, wherein the pressure control device pressure includes a first pressure configured to be equal to or greater than the discharge chamber pressure P and equal to or less than a discharge pressure of the cylinder, and a second pressure configured to be equal to or less than the discharge chamber pressure P and equal to or greater than an intake pressure of the cylinder.
8. The variable capacity cylinder according to claim 1, wherein the control valve is a solenoid valve or a mechanical valve.
9. A variable capacity cylinder according to claim 8, wherein the mechanical valve is a check valve, a bleed valve plate, or a three-way valve.
10. The capacity-variable cylinder according to claim 1, wherein the cylinder is composed of a first cylinder and a second cylinder, and a separation-acting intermediate plate is provided between the first cylinder and the second cylinder, the intermediate plate being divided into an upper intermediate plate and a lower intermediate plate, the upper intermediate plate and the lower intermediate plate being provided with the control valve, respectively.
11. The variable capacity cylinder according to claim 10, wherein the control valve includes an upper cylinder control valve provided on the upper intermediate plate, and a lower cylinder control valve provided on the lower intermediate plate, and an open/close state of the upper cylinder control valve and the lower cylinder control valve is independent of each other.
12. A compressor characterized in that a variable capacity cylinder according to any one of claims 1 to 11 is provided in a casing of the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120030931.1U CN218760419U (en) | 2021-01-06 | 2021-01-06 | Variable-capacity cylinder and compressor comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120030931.1U CN218760419U (en) | 2021-01-06 | 2021-01-06 | Variable-capacity cylinder and compressor comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218760419U true CN218760419U (en) | 2023-03-28 |
Family
ID=85642549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120030931.1U Active CN218760419U (en) | 2021-01-06 | 2021-01-06 | Variable-capacity cylinder and compressor comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218760419U (en) |
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2021
- 2021-01-06 CN CN202120030931.1U patent/CN218760419U/en active Active
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