A type of moving scroll compressor

Abstract

This invention provides a moving scroll and a compressor, wherein the moving scroll includes a base plate and scroll teeth, the scroll teeth being disposed on the base plate, a groove being disposed on the base plate, the groove penetrating the base plate, and a toothed block being disposed within the groove, the toothed block being movable within the groove along the axial direction of the base plate. According to this invention, the technical problem of low compressor energy efficiency caused by the low opening rate of the pump body exhaust passage in existing scroll compressors can be solved.

Description

Technical Field

[0001] This invention belongs to the field of compressor technology, specifically relating to a moving scroll and a compressor. Background Technology

[0002] The scroll compressor compresses by meshing moving and stationary scroll plates. The moving and stationary scroll plates divide the pump body into crescent-shaped cavities. As the crankshaft rotates, each crescent-shaped cavity begins to form and gradually becomes smaller. The meshing point of the moving and stationary scroll plates gradually moves towards the center and finally disengages. The refrigerant is then discharged from the center of the pump body, completing the compression.

[0003] Whether the refrigerant can be discharged quickly after disengagement is a key factor affecting the energy efficiency of the compressor. Because the scroll pump body needs a specific pressure ratio, and the thickness of the profile teeth cannot be too small, the flow area of ​​the exhaust passage of the scroll compressor will decrease due to the increase in pressure ratio and the thickening of the teeth. This results in problems such as a lower exhaust rate and a slower exhaust passage opening rate.

[0004] Existing scroll compressor profiles typically employ solutions such as toothed head grooves and moving disc center grooves to address the issue of the exhaust passage not being able to open and enlarge quickly.

[0005] Because the pump body exhaust passage opening rate of existing scroll compressors is small, resulting in low compressor energy efficiency and other technical problems, this invention studies and designs a moving scroll compressor. Summary of the Invention

[0006] Therefore, the present invention provides a moving scroll compressor that can solve the technical problem of low compressor energy efficiency caused by the small opening rate of the pump body exhaust passage in the prior art.

[0007] To solve the above problems, the present invention provides a moving scroll plate, comprising: a base plate and scroll teeth, the scroll teeth being disposed on the base plate, a groove being disposed on the base plate, the groove penetrating the base plate, a toothed block being disposed within the groove, and the toothed block being movable within the groove along the axial direction of the base plate.

[0008] In some embodiments, the vortex tooth has a first end near the center of the substrate, and the tooth head profile is continuous with the first end profile.

[0009] In some embodiments, the groove is located at the center of the substrate, and the tooth block has a sunken state and a raised state. When the tooth block is in the sunken state, it is misaligned with the vortex tooth along the axial direction of the substrate. When the tooth block is in the raised state, it is continuous with the vortex tooth profile.

[0010] In some embodiments, the tooth block includes a tooth and a fixing plate, the tooth being disposed on the fixing plate and the fixing plate matching the groove.

[0011] In some embodiments, the fixing plate is rectangular, and at least one side of the tooth is located at one corner of the fixing plate.

[0012] In some embodiments, along the axial direction of the substrate, a first guide groove is provided at one end of the vortex tooth near the center of the substrate, and a retainer is provided on the side of the tooth facing the vortex tooth, the retainer being able to move along the axial direction of the substrate within the first groove.

[0013] In some embodiments, a second guide groove is provided on the inner sidewall of the groove along the axial direction of the substrate, and the first guide groove is connected to the second guide groove, so that the clip can move along the axial direction of the substrate within the second groove.

[0014] The present invention also provides a compressor including the aforementioned moving scroll.

[0015] In some embodiments, the compressor includes a crankshaft for driving the moving scroll to rotate, and a protrusion is provided at one end of the crankshaft facing the moving scroll.

[0016] In some embodiments, the compressor includes a stationary scroll plate, and when the compressor discharges, the scroll teeth have a tooth disengagement point of the stationary scroll plate, and the connection between the scroll teeth and the tooth block is located at the disengagement point.

[0017] The moving scroll and compressor provided by this invention have the following beneficial effects:

[0018] The toothed block can move within the groove along the axial direction of the substrate. When the compressor pump body compresses, the toothed block moves upward along the axial direction of the substrate, so that the toothed block and the scroll tooth cooperate to form a complete moving disk scroll tooth, ensuring compression efficiency. When the compressor pump body exhausts, the toothed block moves downward along the axial direction of the substrate 2, and a height difference is formed between the toothed block and the scroll tooth, thereby increasing the exhaust channel between the stationary disk and the moving disk, effectively increasing the exhaust efficiency and improving the compressor energy efficiency. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the moving scroll of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the moving scroll of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the tooth block in the moving vortex disk of the present invention;

[0023] Figure 4 This is a schematic diagram of the crankshaft structure in a compressor according to another embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the tooth block in the depressed state of a compressor according to another embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the compressor in the raised state according to another embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the operation of a compressor pump body in the prior art;

[0027] Figure 8 This is a schematic diagram of the operation of a compressor pump body cavity when it is about to disengage in the prior art;

[0028] Figure 9 This is a schematic diagram of the operation of a compressor pump body when it disengages from the pump body by 90° in the prior art;

[0029] Figure 10 This is a schematic diagram of the operation of a compressor pump body when it disengages 180° from its internal cavity in the prior art;

[0030] Figure 11 This is a schematic diagram of the operation of a compressor pump body when it is about to discharge gas in the existing technology;

[0031] Figure 12 This is a schematic diagram of the disengagement point of the compressor pump body teeth in the prior art;

[0032] Figure 13 This is a schematic diagram of the structure of the compressor pump body for exhaust in the existing technology. Figure 1 ;

[0033] Figure 14 This is a schematic diagram of the structure of the compressor pump body for exhaust in the existing technology. Figure 2 ;

[0034] Figure 15 This is a schematic diagram of the pump body exhaust structure in a compressor according to another embodiment of the present invention. Figure 1 ;

[0035] Figure 16This is a schematic diagram of the pump body exhaust structure in a compressor according to another embodiment of the present invention. Figure 2 ;

[0036] Figure 17 This is a comparison diagram of the size of the exhaust channel of a compressor according to another embodiment of the present invention and a pump body in the prior art.

[0037] The attached figures are labeled as follows:

[0038] 1. Scroll tooth; 2. Base plate; 3. Tooth head block; 4. Tooth head; 5. Fixing plate; 6. Protrusion; 7. Crankshaft; 8. Groove. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0042] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0043] See also Figure 1-17 As shown, according to an embodiment of the present invention, a moving scroll plate is provided, comprising: a base plate 2 and scroll teeth 1, wherein the scroll teeth 1 are disposed on the base plate 2, and a groove 8 is provided on the base plate 2, the groove 8 penetrating the base plate 2, and a toothed block 3 is disposed within the groove 8, and the toothed block 3 is movable within the groove 8 along the axial direction of the base plate 2. In this technical solution, the toothed block 3 is movable within the groove 8 along the axial direction of the base plate 2. When the compressor pump body compresses, the toothed block 3 moves upward along the axial direction of the base plate 2, so that the toothed block 3 cooperates with the scroll teeth 1 to form a complete moving scroll tooth plate, ensuring compression efficiency. When the compressor pump body exhausts, the toothed block 3 moves downward along the axial direction of the base plate 2, forming a height difference between the toothed block 3 and the scroll teeth 1, thereby increasing the exhaust channel between the stationary plate and the moving plate, effectively increasing the exhaust efficiency and improving the compressor energy efficiency.

[0044] Furthermore, the part formed by the combination of the toothed block 3 and the moving disk volute 1 has continuous walls and profiles. The toothed block and the moving disk together complete the task of engaging the pump body. There is a groove 8 in the center of the base plate 2 that cooperates with the fixing plate 5 of the toothed block 3, which can restrict the rotational freedom of the toothed block 3 along the base plate surface.

[0045] The toothed block 3 has a fixed plate 5 with a section of profiled teeth on the base plate, mainly composed of outer profiles, which are continuous with the profiles on the moving disc scroll teeth 1. The toothed block 3 can move up and down under the action of the crankshaft 7 protrusion 6, thereby forming a certain exhaust channel. In other words, the toothed block 3 separates the part of the moving disc tooth head that only has outer profiles, with a small amount of inner profiles or no inner profiles, from the moving disc as a whole, thus forming the toothed block structure.

[0046] In some embodiments, the scroll tooth 1 has a first end near the center of the substrate 2, and the profile of the tooth head block 3 is continuous with the profile of the first end. In this technical solution, the scroll tooth 1 has a first end near the center of the substrate 2, and the profile of the tooth head block 3 is continuous with the profile of the first end. That is to say, compared to the scroll teeth of the prior art, the structure of the moving scroll of the present invention is equivalent to dividing the existing scroll tooth head portion, thereby widening the exhaust channel between the stationary and moving disks during compressor exhaust, and improving exhaust efficiency.

[0047] In some embodiments, the groove 8 is located at the center of the substrate 2, and the toothed block 3 has a sunken state and a raised state. When the toothed block 3 is in the sunken state, it is misaligned with the vortex tooth 1 along the axial direction of the substrate 2. When the toothed block 3 is in the raised state, its profile is continuous with that of the vortex tooth 1. In this technical solution, by misaligning the toothed block 3 with the vortex tooth 1 along the axial direction of the substrate 2 when the toothed block 3 is in the sunken state (i.e., during exhaust), the exhaust channel between the stationary and moving disks is widened, improving exhaust efficiency. When the toothed block 3 is in the raised state, its profile is continuous with that of the vortex tooth 1. Compared to the existing vortex teeth, the structure of the moving vortex disk of the present invention is equivalent to dividing the existing vortex tooth head. When the tooth head block 3 moves upward along the axial direction of the base plate 2, the tooth head block 3 and the vortex tooth 1 cooperate to form a complete moving vortex disk, ensuring compression efficiency.

[0048] In some embodiments, the tooth block 3 includes a tooth 4 and a fixing plate 5, with the tooth 4 disposed on the fixing plate 5 and the fixing plate 5 matching the groove 8. In this technical solution, by matching the fixing plate 5 with the groove 8, when the pump body is compressed, the fixing plate 5 and the groove 8 form a closed fit, ensuring the airtightness of the compression chamber and improving the compression efficiency.

[0049] In some embodiments, the fixing plate 5 is rectangular, and at least one side of the toothed head 4 is located at one corner of the fixing plate 5. In this technical solution, by making the fixing plate 5 rectangular, that is, the groove 8 is also rectangular, and the four corners of the groove 8 are rounded corners, and by making at least one side of the toothed head 4 located at one corner of the fixing plate 5, when the toothed head block 3 moves up and down, one end of the toothed head 4 can form a guiding effect with one corner of the groove 8, ensuring the normal movement of the toothed head block 3.

[0050] In some embodiments, along the axial direction of the substrate 2, a first guide groove is provided at one end of the vortex tooth 1 near the center of the substrate 2, and a retaining member is provided on the side of the tooth head 4 facing the vortex tooth 1. The retaining member can move along the axial direction of the substrate 2 within the first groove. In this technical solution, by providing a first guide groove at one end of the vortex tooth 1 near the center of the substrate 2 along the axial direction of the substrate 2, and providing a retaining member on the side of the tooth head 4 facing the vortex tooth 1, the retaining member can move along the axial direction of the substrate 2 within the first groove. That is, a sliding fit is formed between the retaining member and the first guide groove, further ensuring the normal movement of the tooth head block 3.

[0051] In some embodiments, a second guide groove is provided on the inner sidewall of the groove 8 along the axial direction of the substrate 2. The first guide groove is connected to the second guide groove, and the locking member can move along the axial direction of the substrate 2 within the second groove. In this technical solution, by connecting the first guide groove and the second guide groove, the locking member can move along the axial direction of the substrate 2 within the second groove, ensuring the displacement distance of the tooth block while also guiding the tooth block 3 through the first guide groove and the second guide groove.

[0052] The present invention also provides a compressor including the aforementioned moving scroll.

[0053] In some embodiments, the compressor includes a crankshaft 7 for driving the rotating scroll to rotate. A protrusion 6 is provided at one end of the crankshaft 7 facing the rotating scroll. In this technical solution, the protrusion 6 provides support for the toothed block 3. When the crankshaft 7 rotates to the point where the protrusion 6 is misaligned with the fixed plate 5, the toothed block 3 moves downwards. When the crankshaft 7 rotates to the point where the protrusion 6 is opposite to the fixed plate 5, the toothed block 3 moves upwards, meaning the protrusion 6 lifts the toothed block 3. Furthermore, the protrusion 6 can be an arc-shaped protrusion, meaning the protrusion 6 smoothly transitions to the end face of the crankshaft 7. The height of the protrusion 6 is determined by the displacement distance of the toothed block 3. It is necessary to ensure that when the protrusion 6 lifts the toothed block 3, the toothed block 3 and the scroll tooth profile are completely continuous.

[0054] Specifically, there is a smooth protrusion 6 above the eccentric part of the crankshaft 7. When the protrusion 6 reaches the moving plate tooth block 3, the tooth tip of the moving plate tooth block 3 contacts the tooth bottom of the stationary plate.

[0055] In some embodiments, the compressor includes a stationary scroll plate. When the compressor discharges gas, the scroll teeth 1 have a disengagement point on the tooth tip of the stationary scroll plate, and the connection between the scroll teeth 1 and the tooth tip block 3 is located at the disengagement point. This technical solution, in conjunction with [reference to...] Figures 7 to 14 As shown, when the compressor pump body is working, there is a disengagement point between its stationary and moving discs. During exhaust, due to the presence of the teeth, the gas needs to be discharged through the gap between the teeth of the stationary and moving discs. However, due to the pressure ratio requirements, the thickness of the teeth needs to be ensured. This results in a small gap between the teeth of the stationary and moving discs, leading to insufficient exhaust efficiency. (See also...) Figures 15 to 17 As shown, in the compressor of the present invention, when the compressor discharges, the toothed block 3 moves downward. That is, the exhaust passage between the stationary plate and the moving plate is no longer just the gap between the two, but also the space between the toothed block 3 and the stationary plate substrate, which further increases the exhaust passage and improves the exhaust efficiency.

[0056] The vortex pump body achieves gas compression through the interlocking of moving and stationary discs.

[0057] The moving disc undergoes translational motion around its center of rotation with a certain eccentricity. The moving and stationary discs mesh at multiple points, dividing the pump body into several crescent-shaped chambers. Once a crescent-shaped chamber is formed, it moves inward with the translational motion of the moving disc. When the moving disc reaches a certain angle, the moving and stationary discs disengage, for example, at the disengagement point of the inner chamber. The gas in that crescent-shaped chamber then flows out through the gaps between the teeth of the moving and stationary discs, reaching the exhaust port and completing compression. Because the exhaust points of the inner and outer chambers are different, the outer chamber usually exhausts first, and the inner chamber only begins to exhaust after the outer chamber has passed a certain angle. This is reflected in the moving and stationary discs as a slightly longer outer profile.

[0058] The portion of the moving disc tooth head section that has only outer profile lines, with a small amount having inner profile lines or no inner profile lines, is separated from the moving disc as a whole, thus forming tooth head block 3. The profile lines of this part play a meshing role between the tooth head block engagement point and the tooth head block disengagement point (outer cavity disengagement point), and do not mesh at other times.

[0059] As the moving disc approaches the engagement point of the toothed block 3, the protrusion 6 on the top of the crankshaft 7 lifts the toothed block 3, forming a complete pump body with the moving disc. The profile on the moving disc continuously meshes with the stationary disc. When the moving disc reaches the disengagement point of the toothed block 3, the protrusion 6 begins to descend until it disappears. Under the influence of gravity, the toothed block 3 begins to sink, thus forming a larger exhaust channel. When the engagement point of the next cycle approaches, the toothed block 3 will again engage due to the protrusion 6 on the crankshaft 7, completing the meshing process, which repeats continuously. This pump body, which can quickly establish a wider exhaust channel, can increase the exhaust rate and thus improve the compressor's energy efficiency.

[0060] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0061] The above description is merely 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 principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A compressor characterized by: The compressor comprises a crankshaft (7) for driving the orbiting scroll to rotate, and a convex (6) is arranged on one end of the crankshaft (7) towards the orbiting scroll; the convex (6) can drive the tooth head block (3) to move up and down along the axial direction of the base plate (2); the tooth head block (3) is located at one end of the orbiting scroll (1) close to the center of the base plate (2). The orbiting scroll (1) has a first end close to the center of the base plate (2), and the profile of the tooth head block (3) is continuous with the profile of the first end.

2. The compressor of claim 1, wherein: The recess (8) is located at the center of the base plate (2), and the tooth head block (3) has a sunken state and a raised state; when the tooth head block (3) is in the sunken state, the tooth head block (3) is misaligned with the orbiting scroll (1) along the axial direction of the base plate (2); when the tooth head block (3) is in the raised state, the tooth head block (3) is continuous with the profile of the orbiting scroll (1).

3. The compressor of claim 1, wherein: The tooth head block (3) comprises a tooth head (4) and a fixing plate (5), and the tooth head (4) is arranged on the fixing plate (5), which is matched with the recess (8).

4. The compressor of claim 1, wherein: The fixing plate (5) is rectangular, and at least one side of the tooth head (4) is located at a corner of the fixing plate (5).

5. The compressor of claim 4, wherein: Along the axial direction of the base plate (2), a first guide groove is arranged at one end of the orbiting scroll (1) close to the center of the base plate (2), and a clamping piece is arranged on one side of the tooth head (4) towards the orbiting scroll (1), which can move along the axial direction of the base plate (2) in the first guide groove.

6. The compressor of claim 4, wherein: Along the axial direction of the base plate (2), a second guide groove is arranged on the inner side wall of the recess (8), and the first guide groove and the second guide groove are communicated, and the clamping piece can move along the axial direction of the base plate (2) in the second guide groove.

7. The compressor of claim 6, wherein: The compressor comprises a stationary scroll, and when the compressor discharges, the orbiting scroll (1) has a tooth head disengagement point of the stationary scroll, and the connection between the orbiting scroll (1) and the tooth head block (3) is located at the disengagement point.

8. The compressor of claim 1, wherein: ​

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