Rotary compressor, gas compressor system, refrigerating system and heat pump system
By designing the vane and rocker as an integrated structure and using a drive assembly or magnetic repulsion mechanism to drive the vane to contact the piston, low friction and low leakage between the vane and the piston are achieved, solving the problems of friction loss and high processing difficulty in the prior art, and improving the stability and reliability of the compressor.
Patent Information
- Application Number
- CN202520016785.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-12-19
- Filing Date
- 2025-01-03
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-03
AI Technical Summary
In existing rotary compressors, the frictional loss between the vane and the piston is relatively large, and the hinged structure between the rocker block and the vane leads to problems such as high processing difficulty, increased cost and low reliability.
The slider and rocker are designed as an integrated structure. One end of the slider directly abuts against the outer circumference of the piston, and the slider is driven to abut against the side wall of the piston by a drive component or magnetic repulsion mechanism. Combined with hydrodynamic lubrication, friction and leakage are reduced.
This reduces frictional power consumption between the vane and piston, decreases refrigerant leakage, improves the stability and reliability of the compressor, and reduces processing difficulty and cost.
Smart Images
Figure CN223881349U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a compressor technical field especially relates to a rotary compressor, gas compressor system, refrigeration system and heat pump system. BACKGROUND
[0002] The compressor mechanism mainly includes cylinder, crankshaft, piston and slide vane structure, the cylinder has compression chamber inside, the piston rotation is arranged in the compression chamber and can do eccentric rotation along the axial position of the compression chamber, the slide vane is slidably connected with the cylinder, and one end of the slide vane is connected to the outer circumferential surface of the piston, in the process that the eccentric part of the crankshaft drives the piston to do eccentric rotation, the piston drives the slide vane to do reciprocating motion in the cylinder, and the gas in the compression chamber is compressed at the same time.
[0003] In the compressor mechanism, the slide vane and the piston can be a fixedly connected integrated structure, or can adopt a split structure of contact abutment. The integrated structure has a relatively large relative sliding speed between the inner circumferential surface of the piston and the eccentric part of the crankshaft, resulting in a relatively large relative friction power consumption. The split structure can avoid the defect, but in the split structure, the friction loss between the end of the slide vane and the outer circumferential surface of the piston is relatively large.
[0004] In order to reduce the friction loss, the rotary compressor in the prior art includes a cylinder, a cam mechanism, a slide vane and a rocker, a cam portion of the cam mechanism is rotatably arranged in the cylinder, the cylinder is provided with a slide vane groove, the slide vane is installed in the slide vane groove, the rocker includes a first sub-rocker and a second sub-rocker connected with each other, the first sub-rocker is hingedly connected with the tip of the slide vane around a first axis, the first axis is parallel to the axis of the cylinder, and the second sub-rocker abuts against the outer circumferential surface of the cam portion. This structure can improve the lubrication state between the tip of the slide vane and the outer circumferential surface of the piston, reduce the friction loss and refrigerant leakage, but the relative sliding friction power consumption between the upper end of the slide vane and the cylinder, i.e. the side wall of the slide vane groove, is still relatively large, and there is room for improvement.
[0005] In addition, the rotary compressor in the prior art also adopts a combination of a sliding vane and a swing block, that is, the cylinder has a compression chamber and a swing groove adapted to the swing block inside, the sliding vane slides through the sliding groove of the swing block, one end of the sliding vane is hinged to the swing block, and the other end of the sliding vane forms repulsion between the sliding vane and the cylinder, so that the sliding vane has a movement tendency of sliding to the end where the swing block is located, and the end of the swing block away from the sliding vane abuts against the outer circumferential surface of the piston. Although this structure improves the friction power consumption and leakage of the sliding vane and the outer circumferential surface of the piston, and also reduces the friction power consumption and leakage of the side surface of the sliding vane and the sliding groove, the friction and power consumption are also increased due to the increase of the friction pair of the hinge between the swing block and the head of the sliding vane, and the number of parts is also increased. Since the hinge groove of the swing block needs to be movably connected to the end of the sliding vane, in order to prevent the hinge part of the head of the swing block from being separated from the hinge groove and failing, the arc of the end where the swing block and the sliding vane are hinged needs to be greater than 180 degrees (grinding process cannot be achieved), so that the processing technology of the swing block is difficult, and the swing block cannot be mass-produced, which increases the cost of the compressor. At the same time, since the swing block and the sliding vane and the swing groove are hinged, the structure of the two hinge parts is prone to be stuck during work, which seriously affects the reliability and stability of the compressor, so there is still room for optimization of the structure. SUMMARY
[0006] The technical problem to be solved by the utility model is to solve the above-mentioned problems of the prior art, and provide a rotary compressor, a gas compressor system, a refrigeration system and a heat pump system.
[0007] The utility model solves the above-mentioned technical problems by the following technical scheme: a rotary compressor, comprising a cylinder, a piston, a crankshaft, a swing block and a sliding vane, the cylinder is internally provided with a cylindrical compression chamber and a swing groove with an axis parallel to the axis of the compression chamber, the piston is arranged in the compression chamber, the swing block is rotationally arranged in the swing groove, the swing block is provided with a sliding groove passing through the axis and adapted to the sliding vane, the sliding vane is slidingly arranged in the sliding groove, one end of the sliding vane abuts against the side wall of the piston, and the other end of the sliding vane and the inner side wall of the cylinder are provided with a driving assembly for driving one end of the sliding vane to abut against the side wall of the piston, so as to form an initial pressure difference between the suction chamber and the compression chamber separated by the sliding vane and the piston in the cylinder during starting, the crankshaft is linked with the piston and can drive the piston to make eccentric rotation around the central axis of the compression chamber in the compression chamber, and the swing block swings back and forth in the swing groove.
[0008] On the basis of the above-mentioned technical scheme, the utility model can also be improved as follows:
[0009] Further, the sliding vane is integrally formed.
[0010] The beneficial effect of the further scheme is that the contact stress between the sliding sheet and the outer circumferential surface of the piston can be greatly reduced by integrally forming the sliding sheet, and the situation that the sliding sheet and the rocker block are hinged to cause easy jamming is avoided, and the stability and reliability of the compressor during operation are greatly improved.
[0011] Further, the end wall of the sliding sheet abutting against the piston is in the shape of a circular arc, and the end wall of the sliding sheet abutting against the piston is at least partially fitted with the side wall of the piston.
[0012] The beneficial effect of the further scheme is that the sliding sheet and the piston are more closely fitted by the end wall of the sliding sheet abutting against the piston being in the shape of a circular arc, and the friction of the outer wall surface of the piston is greatly reduced.
[0013] Further, the end wall of the sliding sheet abutting against the piston is in the shape of a circular arc, and the end wall of the sliding sheet abutting against the piston is at least partially fitted with the side wall of the piston.
[0014] The beneficial effect of the further scheme is that the sliding sheet and the piston are more closely fitted by the end wall of the sliding sheet abutting against the piston being in the shape of a circular arc, and the friction of the outer wall surface of the piston is greatly reduced.
[0015] Further, the driving assembly adopts a repulsion mechanism or a spring mechanism.
[0016] The beneficial effect of the further scheme is that the repulsion mechanism or the spring mechanism can drive the initial pressure difference between the suction chamber and the compression chamber formed by the sliding sheet and the piston in the cylinder, and ensure the normal start of the compressor.
[0017] Further, the repulsion mechanism includes a first magnetic pole and a second magnetic pole with opposite magnetic properties, the swing groove is provided with a containing groove for accommodating the other end of the sliding sheet away from the compression chamber, the first magnetic pole is arranged on the bottom wall of the containing groove, the second magnetic pole is arranged at the other end of the sliding sheet, and the length of the first magnetic pole is not less than the swing stroke of the other end of the sliding sheet.
[0018] The beneficial effect of the further scheme is that by arranging the first magnetic pole and the second magnetic pole with opposite magnetic properties, the repulsive force between the first magnetic pole and the second magnetic pole with opposite magnetic properties can be used to stably abut one end of the sliding sheet against the outer circumferential side wall of the piston between the cylinder and the sliding sheet, and then one end of the sliding sheet is stably abutted against the piston, so as to establish a stable exhaust pressure difference when the compressor starts, and improve the stability and reliability of the compressor.
[0019] Further, the elastic mechanism comprises a compression spring, one end of the compression spring is connected with the other end of the sliding sheet, and the other end of the compression spring is connected with the inner side wall of the cylinder.
[0020] The beneficial effect of the further scheme is that the initial pressure difference between the suction chamber and the compression chamber formed by the sliding sheet and the piston in the cylinder can be driven by the restoring force of the compression spring, so that the normal start of the compressor is ensured.
[0021] Further, the sliding sheet and the swing block are made of one of steel, cast iron, alloy and ceramic, and the sliding sheet is made of powder metallurgy.
[0022] The utility model also provides a kind of gas compressor system, including the rotary compressor of the described.
[0023] The utility model also provides a kind of refrigeration system, including the rotary compressor of the described.
[0024] The utility model also provides a kind of heat pump system, including the rotary compressor of the described.
[0025] The beneficial effect of the utility model is that the rotary compressor, gas compressor system, refrigeration system and heat pump system of the utility model, by the sliding sheet and the swing block of prior art are designed as a whole, one end of sliding sheet is directly in abutment with the outer circumferential surface of piston, can greatly reduce the swing amplitude of sliding sheet and swing block, lubrication state is basically changed from boundary lubrication to fluid dynamic pressure lubrication, so that the friction power consumption between sliding sheet and piston is effectively reduced, and the cold leakage between sliding sheet and piston can be reduced, in addition, the utility model is swing block is arranged in swing groove, and one end of the sliding sheet is in abutment with the side wall of the piston by driving assembly, the contact stress between swing block and cylinder is reduced by the rotation of swing block, and then the lubrication state between swing block and cylinder is improved, and the friction loss between sliding sheet and cylinder is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0026] Fig. 1 It is the structure schematic view of the rotary compressor of one embodiment of the utility model;
[0027] Fig. 2 It is the structure schematic view of the sliding sheet of one embodiment of the utility model.
[0028] In the drawings, the component list represented by each sign is as follows:
[0029] 1, cylinder, 2, piston, 3, sliding sheet, 4, swing block, 5, repulsion mechanism, 6, compression chamber;
[0030] 41, first swing block, 42, second swing block, 51, first magnetic pole, 52, second magnetic pole. DETAILED DESCRIPTION
[0031] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0032] like Figs. 1-2 As shown, a rotary compressor includes a cylinder 1, a piston 2, a crankshaft, a swing block 4, and a vane 3. The cylinder 1 has a cylindrical compression chamber 6 and a swing groove with its axis parallel to the axis of the compression chamber 6. The piston 2 is disposed in the compression chamber 6. The swing block 4 is rotatably disposed in the swing groove. The swing block 4 has a groove passing through its axis and adapted to the vane 3. The vane 3 is slidably disposed in the groove, and one end of the vane 3 abuts against the side wall of the piston 2. A drive assembly is disposed between the other end of the vane 3 and the inner side wall of the cylinder 1 to drive one end of the vane 3 to abut against the side wall of the piston 2, so that an initial pressure difference is formed between the intake chamber and the compression chamber separated by the vane 3 and the piston 2 in the cylinder 1 during startup. The crankshaft is linked to the piston 2 and can drive the piston 2 to rotate eccentrically around the central axis of the compression chamber 6. The swing block 4 swings back and forth synchronously in the swing groove.
[0033] Of course, as part of the compressor, it also includes a housing, stator, rotor, main bearing, and auxiliary bearing. The stator and rotor are housed within the housing as part of the motor. The rotor is housed within the stator and can rotate under the action of electromagnetic torque. The rotation of the rotor drives the crankshaft to rotate, which in turn drives the piston 2 to rotate. The main bearing and auxiliary bearing are respectively located at the upper and lower ends of the cylinder 1 to keep the compression chamber 6 in a sealed state. This part is existing technology and will not be described in detail here.
[0034] This invention relates to a rotary compressor. By integrating the existing sliding vane and rocker block design, one end of the sliding vane 3 directly contacts the outer circumferential surface of the piston 2. This significantly reduces the swing amplitude of the sliding vane 3 and the rocker block 4, and the lubrication state changes from boundary lubrication to hydrodynamic lubrication. This effectively reduces the frictional power consumption between the sliding vane 3 and the piston 2, and also reduces cold leakage between them. Furthermore, by setting the rocker block 4 within the swing groove and driving one end of the sliding vane 3 to contact the side wall of the piston via a drive assembly, the rotation of the rocker block 4 reduces the contact stress between it and the cylinder 1, thereby improving the lubrication state between them, reducing frictional loss, effectively lowering costs, and improving the reliability of the compressor.
[0035] In one or more embodiments of the utility model, the slide 3 is integrally formed. By integrally forming the slide 3, the contact stress between the slide 3 and the outer circumferential surface of the piston 2 can be greatly reduced, and the situation that the slide and the swing block are hingedly connected to easily cause jamming in the prior art is avoided, thereby greatly improving the stability and reliability of the compressor operation.
[0036] It should be particularly pointed out that in practice, the slide can also be connected as a whole by welding, clamping, locking or other modes, and can ensure the stability of the slide 3 during the operation of the compressor.
[0037] Optionally, in one or more embodiments of the utility model, the end wall of the slide 3 abutting against the piston 2 is in the form of a circular arc surface, and at least part of the end wall of the slide 3 abutting against the piston 2 is arranged to be fitted to the side wall of the piston 2. By making the end wall of the slide 3 abutting against the piston 2 in the form of a circular arc surface, the slide 3 and the piston 2 can be more closely fitted, thereby greatly reducing the friction of the outer wall surface of the piston 2.
[0038] Optionally, in one or more embodiments of the utility model, the end wall of the slide 3 abutting against the piston 2 is in the form of a plane, and the end wall of the slide 3 abutting against the piston 2 is circumscribed on the outer side wall of the piston 2. By making the side wall of the slide 3 abutting against the piston 2 in the form of a plane, the processing difficulty is reduced under the premise of ensuring the effective abutment of the slide and the piston 2, and the installation is also facilitated.
[0039] In one or more embodiments of the utility model, the swing block 4 includes a first swing block 41 and a second swing block 42, the first swing block 41 and the second swing block 42 are arranged side by side and spaced apart, and form a sliding groove for accommodating the slide 3. Preferably, the first swing block 41 and the second swing block 42 are symmetrically arranged in the form of a semicircular cylinder to facilitate assembly and improve the stability of operation.
[0040] In one or more embodiments of the utility model, the driving assembly adopts a repulsion mechanism 5 or a elastic force mechanism. The repulsion mechanism 5 or the elastic force mechanism can drive the initial pressure difference between the suction chamber and the compression chamber formed by the slide 3 and the piston 2 in the cylinder 1, thereby ensuring the normal start of the compressor.
[0041] Optionally, in one or more embodiments of the utility model, the repulsion mechanism 5 includes first magnetic pole 51 and second magnetic pole 52 of opposite magnetic properties, the swing groove is provided with a containing groove for accommodating the other end of the sliding sheet 3 on the side away from the compression chamber 6, the first magnetic pole 51 is arranged on the bottom wall of the containing groove, and the second magnetic pole 52 is arranged on the other end of the sliding sheet 3. By arranging the first magnetic pole 51 and the second magnetic pole 52 of opposite magnetic properties, one end of the sliding sheet 3 can be stably abutted on the outer peripheral side wall of the piston 2 by the repulsion between the first magnetic pole 51 and the second magnetic pole 52, and then one end of the sliding sheet 3 is stably abutted on the piston 2, so that a stable exhaust pressure difference is established when the compressor starts, and the stability and reliability of the compressor are improved.
[0042] It needs to be particularly pointed out that here, the length of the first magnetic pole 51 is not less than the swing stroke of the other end of the sliding sheet 3, so that stable repulsion can be formed between the first magnetic pole 51 and the second magnetic pole 52 during the swing of the sliding sheet 3, and the stable operation of the compressor is ensured.
[0043] Optionally, in one or more embodiments of the utility model, the elastic force mechanism includes a compression spring, one end of the compression spring is connected with the other end of the sliding sheet 3, and the other end of the compression spring is connected with the inner side wall of the cylinder 1. The initial pressure difference between the suction chamber and the compression chamber formed by the sliding sheet 3 and the piston 2 in the cylinder 1 can be driven by the restoring force of the compression spring, and the normal start of the compressor is ensured.
[0044] Of course, in actuality, the driving assembly can also adopt existing micro drive motors or driving cylinders and other driving components, so that one end of the sliding sheet 3 can be stably abutted on the outer peripheral side wall of the piston 2 when the compressor starts, and here, the existing driving components will not be enumerated one by one.
[0045] The rotary compressor of the utility model, the repulsion between the first magnetic pole 51 and the second magnetic pole 52 is mainly used to form the initial pressure difference between the suction chamber and the compression chamber formed by the sliding sheet 3 and the piston 2 in the cylinder 1 when starting, and when working normally, the high pressure (much greater than the repulsion) in the containing groove can drive one end of the sliding sheet 3 to be stably abutted on the outer peripheral side wall of the piston 2.
[0046] Optionally, in one or more embodiments of the utility model, the sliding sheet 3 and the swing block 4 are made of one of steel, cast iron, alloy and ceramic, and the sliding sheet 3 is made by powder metallurgy, preferably by injection molding process.
[0047] The rotary compressor effectively reduces the friction loss between the sliding vane 3 and the piston 2 and between the sliding vane 2 and the cylinder 1, eliminates the friction pair of the rocking block and the sliding vane head of the prior art, helps to reduce the energy consumption of the compressor, prolongs the service life of the compressor, effectively reduces the cost, and improves the reliability of the compressor.
[0048] The utility model also provides a kind of gas compressor system, including the rotary compressor.
[0049] The utility model also provides a kind of refrigeration system, including the rotary compressor.
[0050] The utility model also provides a kind of heat pump system, including the rotary compressor.
[0051] The above only for the preferred embodiment of the utility model, and not to limit the utility model, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A rotary compressor characterized by: The rotary compressor comprises a cylinder (1), a piston (2), a crankshaft, a swing block (4) and a sliding vane (3), the cylinder (1) is internally provided with a compression chamber (6) in a cylindrical structure and a swing groove with an axis parallel to the axis of the compression chamber (6), the piston (2) is arranged in the compression chamber (6), the swing block (4) is rotationally arranged in the swing groove, the swing block (4) is provided with a sliding groove passing through the axis thereof and matched with the sliding vane (3), the sliding vane (3) is slidingly arranged in the sliding groove, one end of the sliding vane (3) abuts against the side wall of the piston (2), the other end of the sliding vane (3) and the inner side wall of the cylinder (1) are provided with a driving assembly for driving the one end of the sliding vane (3) to abut against the side wall of the piston (2) to form an initial pressure difference between an air suction chamber and a compression chamber separated by the sliding vane (3) and the piston (2) in the cylinder (1) at start-up, the crankshaft is connected with the piston (2) and can drive the piston (2) to eccentrically rotate in the compression chamber (6) around the central axis of the compression chamber (6), and the swing block (4) swings back and forth in the swing groove.
2. The rotary compressor of claim 1, wherein: The sliding vane (3) is integrally formed.
3. The rotary compressor of claim 2, wherein: The end wall of the sliding vane (3) abutting against the piston (2) is in a circular arc surface shape, and at least part of the end wall of the sliding vane (3) abutting against the piston (2) is arranged in abutment with the side wall of the piston (2).
4. The rotary compressor of claim 2, wherein: The end wall of the sliding vane (3) abutting against the piston (2) is in a plane shape, and the end wall of the sliding vane (3) abutting against the piston (2) is circumscribed on the outer side wall of the piston (2).
5. The rotary compressor of claim 1, wherein: The driving assembly adopts a repulsive force mechanism (5) or an elastic force mechanism.
6. The rotary compressor of claim 5, wherein: The repulsive force mechanism (5) comprises first and second magnetic poles (51, 52) with opposite magnetism, the side of the swing groove away from the compression chamber (6) is provided with a containing groove for containing the other end of the sliding vane (3), the first magnetic pole (51) is arranged on the bottom wall of the containing groove, the second magnetic pole (52) is arranged on the other end of the sliding vane (3), and the length of the first magnetic pole (51) is not less than the swing stroke of the other end of the sliding vane (3).
7. The rotary compressor of claim 5, wherein: The elastic force mechanism comprises a compression spring, one end of the compression spring is connected with the other end of the sliding vane (3), and the other end of the compression spring is connected with the inner side wall of the cylinder (1).
8. A gas compressor system characterized by: The rotary compressor comprises the swing block (4) and the sliding vane (3) according to any one of claims 1-7.
9. A refrigeration system characterized by, The rotary compressor comprises the swing block (4) and the sliding vane (3) according to any one of claims 1-7.
10. A heat pump system, characterized by, The rotary compressor comprises the swing block (4) and the sliding vane (3) according to any one of claims 1-7.