Pump body structure, compressor and air conditioner

Abstract

The pump body structure comprises a flange assembly, an air cylinder, a crankshaft and a plurality of sliding pieces, the flange assembly is provided with two or more air suction ports and two or more air exhaust ports, the air cylinder is provided with a hollow cavity, the hollow cavity is communicated with the air suction ports and the air exhaust ports through air paths, and the hollow cavity is in an oval shape; the crankshaft is rotationally mounted in the hollow cavity and provided with a plurality of sliding grooves, and the sliding grooves are spirally distributed along the axis of the crankshaft; the multiple sliding pieces are movably arranged in the sliding grooves respectively, and the hollow cavity is divided into multiple independent sealed cavities through the multiple sliding pieces. Every time the crankshaft finishes one cycle of operation, each sealing cavity independently performs at least two times of air suction, compression and exhaust actions during operation, the operation efficiency of the compressor is remarkably improved, the hollow cavity of the air cylinder is oval, the displacement of the compressor is larger under the condition of the same rotor outer diameter, and due to the fact that the eccentric design is omitted, the service life of the compressor is prolonged. The influence of eccentric force on a shaft system is reduced, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a pump body structure, a compressor and an air conditioner. Background Art

[0002] The existing rotor compressor realizes gas compression through the rotation of rollers, which is an eccentric structure. The upper flange, cylinder, and lower flange in the compressor pump body form a sealed cavity, and the sliding vane and rollers respectively seal the high-pressure cavity and the low-pressure cavity. The roller can only complete one suction and exhaust process in one rotation, and the volume utilization rate is low. In addition, the eccentric structure design makes the shaft system prone to severe wear when the compressor runs at high speed, greatly shortening the service life of the compressor. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a pump structure, a compressor and an air conditioner, so as to increase the displacement of the compressor and improve the efficiency of the compressor.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention provides a pump body structure, comprising:

[0006] A flange assembly having two or more air intake ports and two or more air exhaust ports;

[0007] The cylinder is provided with a hollow cavity, the hollow cavity is in air communication with the air inlet and the air outlet, and the hollow cavity is in an elliptical shape;

[0008] A crankshaft is rotatably mounted in the hollow cavity, wherein the crankshaft is provided with a plurality of slide grooves, and the plurality of slide grooves are spirally distributed along the axis of the crankshaft;

[0009] A plurality of slides, movably disposed in each of the slide slots;

[0010] Wherein, the plurality of sliding sheets divide the hollow cavity into a plurality of independent sealed chambers.

[0011] Furthermore, a circular protrusion is provided on the outer surface of the crankshaft along its radial direction, the circular protrusion is provided with the slide groove, and the notch of the slide groove extends to the outer peripheral edge of the circular protrusion.

[0012] Furthermore, the flange assembly, the cylinder and the crankshaft are coaxially arranged, and the angle of the air intake port and the angle of the air exhaust port are both smaller than the notch angle of the slide groove.

[0013] Furthermore, the relationship between the diameter of the air inlet and the air outlet and the inner diameter of the hollow cavity is as follows:

[0014] b > R_suction > R_discharge ≥ a, where a represents the minor axis radius of the hollow cavity, b represents the major axis radius of the hollow cavity, R_suction represents the diameter at the location of the suction port, and R_discharge represents the diameter at the location of the discharge port.

[0015] Further, the flange assembly includes an upper flange and a lower flange. The upper flange and the lower flange are respectively sealed and connected to the top and bottom of the cylinder. One of the upper flange or the lower flange is provided with the discharge port, and the other is provided with the suction port.

[0016] Further, a spring is provided in the chute. The inner end of the sliding piece abuts against the spring, and the outer end of the sliding piece is closely fitted with the side wall of the hollow cavity.

[0017] Further, an oil hole is provided in the chute.

[0018] Further, two or more of the suction ports are connected through a provided suction channel, and two or more of the discharge ports are connected through a provided discharge channel.

[0019] In a second aspect, the present invention also provides a compressor, including the above-mentioned pump body structure.

[0020] In a third aspect, the present invention also provides an air conditioner, including the above-mentioned compressor.

[0021] The beneficial effects of the present invention compared with the prior art are as follows: A pump body structure includes a flange assembly, a cylinder, a crankshaft, and a plurality of sliding pieces. The flange assembly is provided with two or more suction ports and two or more discharge ports. The cylinder is provided with a hollow cavity, and the hollow cavity is in air path communication with the suction ports and the discharge ports. The hollow cavity is elliptical in shape. The crankshaft is rotatably installed in the hollow cavity, and the crankshaft is provided with a plurality of chutes, and the plurality of chutes are spirally distributed along the axis of the crankshaft; a plurality of sliding pieces are movably arranged in each chute, and the plurality of sliding pieces divide the hollow cavity into a plurality of independent sealed chambers. When the crankshaft rotates, each sealed chamber rotates accordingly. For each revolution of the crankshaft, each sealed chamber performs the suction, compression, and discharge actions at least twice independently during operation, significantly improving the operation efficiency of the compressor, while reducing the force on each sliding piece and ensuring the working life of the parts. In addition, compared with the existing structure, the hollow cavity of the cylinder is elliptical in shape, and the displacement of the compressor is larger under the same outer diameter of the rotor. Correspondingly, the height of the cylinder can be reduced, the volume of the parts can be reduced, and the cost of the parts can be reduced. Moreover, the eccentric design is cancelled, reducing the influence of the eccentric force on the shafting, enhancing the reliability of the parts, and improving the working life of the compressor.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0024] Figure 1 An exploded view of a pump structure provided by a specific embodiment of the present invention;

[0025] Figure 2 A schematic structural diagram of a crankshaft in a pump body structure provided by a specific embodiment of the present invention;

[0026] Figure 3 A top view of a crankshaft in a pump body structure provided in a specific embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the structure of a lower flange in a pump body structure provided by a specific embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the air suction path of the lower flange in a pump body structure provided in a specific embodiment of the present invention;

[0029] Figure 6 A schematic structural diagram of a cylinder in a pump body structure provided by a specific embodiment of the present invention;

[0030] Figure 7 A top view of a cylinder in a pump body structure provided in a specific embodiment of the present invention;

[0031] Figure 8 A schematic diagram of the structure of a sliding vane in a pump body structure provided by a specific embodiment of the present invention;

[0032] Fig. 9 A schematic structural diagram of an upper flange in a pump body structure provided by a specific embodiment of the present invention;

[0033] Fig.10 A schematic diagram of an exhaust path of an upper flange in a pump body structure provided in a specific embodiment of the present invention;

[0034] Fig.11 A top view of a pump body structure provided in a specific embodiment of the present invention;

[0035] Fig.12 A top view of a partial structure of a pump body structure provided by a specific embodiment of the present invention;

[0036] Fig.13 A schematic diagram of the operation of a single sealed chamber of a pump body structure provided in a specific embodiment of the present invention.

[0037] Reference numerals

[0038] 1. Flange assembly; 11. Upper flange; 111. Exhaust port; 112. Exhaust channel; 12. Lower flange; 121. Intake port; 122. Intake channel; 2. Cylinder; 21. Hollow cavity; 3. Crankshaft; 31. Circular protrusion; 311. Slide groove; 3111. Oil hole; 32. Oil injection channel; 4. Slide vane. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] like Figures 1 to 13 As shown, an embodiment of the present invention provides a pump body structure, which is applied to a compressor, including a flange assembly 1, a cylinder 2, a crankshaft 3 and a plurality of vanes 4, the flange assembly 1 is provided with more than two air intake ports 121 and more than two air exhaust ports 111, the cylinder 2 is provided with a hollow cavity 21, the hollow cavity 21 is connected with the air intake port 121 and the air exhaust port 111 by air paths, the hollow cavity 21 is elliptical in shape, the crankshaft 3 is rotatably installed in the hollow cavity 21, the crankshaft 3 is provided with a plurality of slide grooves 311, the plurality of slide grooves 311 are spirally distributed along the axis of the crankshaft 3, a plurality of slide vanes 4 are movably arranged in each slide groove 311, and the plurality of slide vanes 4 divide the hollow cavity 21 into a plurality of independent sealed chambers.

[0046] When the crankshaft 3 rotates, each sealed chamber rotates accordingly. Each time the crankshaft 3 completes one cycle, each sealed chamber performs suction, compression, and exhaust actions at least twice during operation, which significantly improves the operating efficiency of the compressor and reduces the force on each vane 4, thereby ensuring the service life of the parts. In addition, compared with the existing structure, the hollow cavity 21 of the cylinder 2 is elliptical in shape, and the displacement of the compressor is larger under the same rotor outer diameter. Correspondingly, the height of the cylinder 2 can be reduced, the volume of the parts can be reduced, and the cost of the parts can be reduced. In addition, the eccentric design is eliminated, which reduces the influence of the eccentric force on the shaft system, enhances the reliability of the parts, and increases the service life of the compressor.

[0047] like Figure 2 and Figure 3 As shown, the outer surface of the crankshaft 3 is provided with a circular protrusion 31 extending along its radial direction, and the circular protrusion 31 is provided with a slide groove 311. The groove opening of the slide groove 311 extends to the outer peripheral edge of the circular protrusion 31, and the slide 4 can be installed into the slide groove 311 through the groove opening of the slide groove 311.

[0048] Specifically, a plurality of slide grooves 311 are evenly distributed along the circumference of the circular protrusion 31, so that the movement of the vane 4 is evenly distributed on the entire circumference of the circular protrusion 31, which can effectively balance the rotational torque of the crankshaft 3, reduce dynamic imbalance, and thus reduce the vibration and noise of the compressor. The slide grooves 311 on the circular protrusion 31 are all tilted in the same direction, so that the force on the vane 4 during the movement is more uniform, reducing the shaking and impact of the vane 4 during the movement.

[0049] Specifically, a spring (not shown in the figure) is arranged in the slide groove 311, and the spring may be a spiral type, the inner end of the slide plate 4 abuts against the spring, and the outer end of the slide plate 4 is tightly matched with the side wall of the hollow cavity 21. Specifically, the spring may be installed by opening a spring groove in the slide groove 311, and the spring is embedded in the spring groove.

[0050] The action of the spring enables the slide 4 to automatically adjust its position to adapt to the shape and changes of the inner wall of the hollow cavity 21. This adaptive adjustment can ensure that the slide 4 is always in close contact with the side wall of the hollow cavity 21, improve the sealing effect, and reduce gas leakage. In addition, with the long-term operation of the equipment, the slide 4 and the inner wall of the hollow cavity 21 may produce a certain amount of wear. The design of the spring can automatically compensate for this wear, maintain the effective working position of the slide 4, and extend the service life of the slide 4 and the compressor.

[0051] The slide plate 4 may be a cuboid or a trapezoid, so as to slide smoothly in the slide groove 311. The outer end of the slide plate 4 is designed to be an arc shape matching the curvature of the inner wall of the hollow cavity 21, so as to ensure a good sealing effect.

[0052] When the crankshaft 3 rotates, the sliding vane 4 reciprocates along the sliding groove 311 under the action of the spring. The spring provides continuous pressure, enabling the sliding vane 4 to closely fit the side wall of the hollow cavity 21 to form an effective seal.

[0053] As Figure 3 shown, in one embodiment, oil holes 3111 are provided at the bottoms of multiple sliding grooves 311, and each oil hole 3111 is configured with an oil injection channel 32. All the oil injection channels 32 communicate with the hollow part of the crankshaft 3. With such a design, it can ensure that the sliding vane 4 in the sliding groove 311 is supplied with lubricating oil. The presence of the lubricating oil can effectively reduce the friction coefficients between the sliding vane 4 and the sliding groove 311, and between the sliding vane 4 and the inner wall of the hollow cavity 21, reduce wear, and improve the flowability and service life of the sliding vane 4 during sliding. In addition, by injecting lubricating oil into the hollow part of the crankshaft 3, the multiple sliding vanes 4 can be lubricated uniformly through the oil injection channels 32, thus achieving lubrication and simplifying the lubrication maintenance process.

[0054] The lubricating oil can not only lubricate but also take away a part of the heat generated by the sliding vane 4 and the spring during movement, thereby preventing the sliding vane 4 and the spring from overheating.

[0055] As Figure 3 、 Figure 5 、 Figure 7 、 Fig.10 and Fig.12 shown, specifically, the flange assembly, the cylinder, and the crankshaft are all coaxially arranged. The angle β of the suction port and the angle λ of the exhaust port are both smaller than the notch angle α of the sliding groove; the relationship between the diameters of the suction port and the exhaust port and the inner diameter of the hollow cavity is as follows: b > R_suction > R_exhaust ≥ a, where a represents the minor axis radius of the hollow cavity, b represents the major axis radius of the hollow cavity, R_suction represents the diameter of the position where the suction port is located, and R_exhaust represents the diameter of the position where the exhaust port is located. With such a design, it can ensure that each sealing chamber has sufficient time for compression work.

[0056] According to the above design, the displacement calculation formula of the pump body is:

[0057] V = 2πh(a * b - r 2 ), where r is the radius of the circular protrusion and h is the height of the cylinder.

[0058] As Figure 1 、 Figure 4 、 Fig. 9 and Fig.11 shown, the flange assembly 1 includes an upper flange 11 and a lower flange 12. The upper flange 11 and the lower flange 12 are respectively sealed and connected to the top and bottom of the cylinder 2. One of the upper flange 11 or the lower flange 12 is provided with an exhaust port 111, and the other is provided with a suction port 121. The exhaust port 111 and the suction port 121 can be circular, waist-shaped, oval, etc.

[0059] In one embodiment, the exhaust port 111 is arranged on the upper flange 11, and the intake port 121 is arranged on the lower flange 12. The upper flange 11 is provided with an intake channel 122, and the lower flange 12 is provided with an exhaust channel 112. The exhaust port 111 is connected with the intake channel 122, and the intake port 121 is connected with the intake channel 122. The intake channel 122 and the exhaust channel 112 are in a semicircular shape.

[0060] In another embodiment, the exhaust port 111 is provided on the lower flange 12 , and the intake port 121 is provided on the upper flange 11 .

[0061] like Figure 12 to Figure 13 As shown, in one embodiment, the upper flange 11 is provided with two exhaust ports 111, the lower flange 12 is provided with two air intake ports 121, and eight slide grooves 311 are arranged on the circular protrusion 31. A slide vane 4 is installed in each slide groove 311. The eight slide vanes 4 divide the hollow cavity 21 into eight independent sealed chambers. When the crankshaft 3 rotates, each sealed chamber rotates accordingly. The following describes the working state by taking a sealed chamber as an example.

[0062] like Fig.13 As shown, during the period from state 1 to state 2, the volume of the sealed chamber increases from small to large as the cylinder 2 rotates (the reason is that the hollow cavity 21 of the cylinder 2 is an elliptical shape, and when the hollow cavity 21 rotates from the short axis to the long axis, the slide 4 extends and grows, and the formed sealing area increases), and the gas enters the sealed chamber from the air intake port 121. From state 2 to state 3, the volume of the sealed chamber decreases from large to large as the cylinder 2 rotates (the reason is that the hollow cavity 21 of the cylinder 2 is an elliptical shape, and when the hollow cavity 21 rotates from the long axis to the short axis, the slide 4 extends and shortens, and the formed sealing area decreases), and the gas in the sealed chamber is compressed. From state 3 to state 4, the volume of the sealed chamber decreases first and then increases, and the gas is discharged from the exhaust port 111. From state 4 to state 5, at this time, there may be residual gas in the sealed chamber that was not completely discharged in the first exhaust. From state 5 to state 6, the volume of the sealed chamber increases from small to large, and the second air intake is performed, and the gas is mixed with the residual gas and continues to operate. From state 6 to state 7, the volume of the sealed chamber decreases with the rotation, and the gas in the sealed chamber is compressed. From state 7 to state 8, the volume of the sealed chamber decreases first and then increases, and the second exhaust is performed.

[0063] It can be seen that each time the crankshaft 3 completes one cycle of operation, each sealed chamber completes the intake and exhaust actions twice. Compared with the prior art that can only complete one intake and exhaust action in one cycle of operation, the operating efficiency of the compressor is significantly improved.

[0064] The embodiment of the present invention further provides a compressor, comprising the above-mentioned pump body structure. Except for the above-mentioned pump body structure, the rest of the structure of the compressor can be the same as that in the prior art, and the rest of the structure will not be described in detail here.

[0065] The embodiment of the present invention further provides an air conditioner, comprising the above compressor. Except for the above pump structure, the rest of the structure of the air conditioner can be the same as that in the prior art, and the rest of the structure will not be described in detail here.

[0066] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A pump body structure, characterized in that, comprising: a flange assembly having more than two suction ports and more than two exhaust ports; a cylinder having a hollow cavity, the hollow cavity being in gas path communication with the suction ports and the exhaust ports, and the hollow cavity being elliptical in shape; a crankshaft rotatably mounted in the hollow cavity, the crankshaft having a plurality of sliding grooves, and the plurality of sliding grooves being spirally distributed along the axis of the crankshaft; a plurality of sliding vanes movably disposed in each of the sliding grooves; wherein the plurality of sliding vanes divide the hollow cavity into a plurality of independent sealed chambers.

2. The pump body structure according to claim 1, characterized in that, a circular protrusion is provided on the outer surface of the crankshaft extending in the radial direction thereof, the sliding groove is provided on the circular protrusion, and the notch of the sliding groove extends to the outer peripheral edge of the circular protrusion.

3. The pump body structure according to claim 2, characterized in that, the flange assembly, the cylinder and the crankshaft are coaxially arranged, and the angles of the suction ports and the angles of the exhaust ports are both smaller than the notch angle of the sliding groove.

4. The pump body structure according to claim 3, characterized in that, the relationship between the diameters of the suction ports and the exhaust ports and the inner diameter of the hollow cavity is as follows: b > R_suction > R_exhaust ≥ a, where a represents the minor axis radius of the hollow cavity, b represents the major axis radius of the hollow cavity, R_suction represents the diameter of the position where the suction port is located, and R_exhaust represents the diameter of the position where the exhaust port is located.

5. The pump body structure according to claim 1, characterized in that, the flange assembly includes an upper flange and a lower flange, the upper flange and the lower flange are respectively hermetically connected to the top and bottom of the cylinder, one of the upper flange or the lower flange is provided with the exhaust port, and the other is provided with the suction port.

6. The pump body structure according to claim 1, characterized in that, a spring is provided in the sliding groove, the inner end of the sliding vane abuts against the spring, and the outer end of the sliding vane is in close fit with the side wall of the hollow cavity.

7. The pump body structure according to claim 1, characterized in that, an oil hole is provided in the sliding groove.

8. The pump body structure according to claim 1, characterized in that, more than two of the suction ports are communicated through a provided suction channel, and more than two of the exhaust ports are communicated through a provided exhaust channel.

9. A compressor, characterized in that, comprising the pump body structure according to any one of claims 1-8.

10. An air conditioner, characterized in that, comprising the compressor according to claim 9.

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