Axial compensation spring structure of fixed scroll floating compressor

Abstract

The utility model discloses an axial compensation spring structure of a fixed scroll floating compressor, and relates to the technical field of compressors, in particular to the axial compensation spring structure of the fixed scroll floating compressor. The vortex compressor comprises a movable vortex and a fixed vortex which is arranged above the movable vortex and matched with the movable vortex, wherein vortex blades of the movable vortex and the fixed vortex are matched with each other to form a compression chamber; a high-low pressure isolation assembly is assembled above the fixed vortex; a spring device capable of compensating is arranged between the fixed vortex and the high-low pressure isolation assembly; the spring device is one of a middle pressure cavity inner spring device, a high-pressure cavity side spring device and a low-pressure cavity side spring device; one or more spring devices can be arranged. According to the technical scheme of the utility model, the problems of high management cost, part storage and the like caused by assembling and setting the matching level between the fixed vortex and the high-low pressure isolation plate in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model discloses fixed scroll floating compressor axial compensation spring structure relates to compressor technical field, and especially relates to a kind of fixed scroll floating compressor axial compensation spring structure. BACKGROUND

[0002] The axial limiting of fixed scroll of the compressor of existing fixed scroll floating structure is to set limit plane in high-low pressure partition, but during assembly, because of the dimensional tolerance, the clearance between fixed scroll and high-low pressure limit plane must be controlled, so assembly cooperation level must be set. But this will cause high management cost and storage problem of parts.

[0003] In view of the problems existing in the prior art, it is necessary to design a new type of fixed scroll floating compressor axial compensation spring structure to overcome the problems existing in the prior art. SUMMARY

[0004] According to the assembly setting cooperation level between fixed scroll and high-low pressure isolation plate of the prior art, high management cost and parts storage and other technical problems are caused, and a fixed scroll floating compressor axial compensation spring structure is provided. The utility model mainly utilizes the spring device with compensation function to realize assembly precision compensation, relaxes the machining precision and assembly precision of parts, so as to reduce various costs.

[0005] The technical means adopted by the utility model are as follows:

[0006] A kind of fixed scroll floating compressor axial compensation spring structure, including dynamic scroll and the fixed scroll being set above dynamic scroll and being matched with dynamic scroll, scroll blade of dynamic scroll and fixed scroll is mutually matched to form compression chamber;It is characterized in that:

[0007] Further, high-low pressure isolation assembly is assembled above fixed scroll;

[0008] Further, spring device that can compensate is arranged between fixed scroll and high-low pressure isolation assembly;

[0009] Further, spring device is divided into one of middle pressure cavity inner spring device, high pressure cavity side spring device or low pressure cavity side spring device;

[0010] Further, spring device can be provided with one or more.

[0011] Further, high-low pressure isolation assembly includes: high-low pressure isolation plate, first sealing ring, second sealing ring, annular fixing ring;

[0012] Furthermore, the high-low pressure isolation plate is arranged above the fixed scroll, and the high-low pressure isolation plate is provided with a limiting groove for limiting the axial movement of the fixed scroll;

[0013] Furthermore, an annular fixing ring is fixed to the lower surface of the high and low pressure isolation plate and extends into the annular channel on the high and low pressure isolation plate;

[0014] Furthermore, the first sealing ring is provided at the contact point between the inner edge of the annular fixing ring and the inner edge of the annular channel;

[0015] Furthermore, the second sealing ring is provided at the contact point between the outer edge of the annular fixing ring and the outer edge of the annular channel;

[0016] Furthermore, the inner edge and the outer edge of the annular fixing ring are processed with tiny protrusions, and the tiny protrusions are used to squeeze the first sealing ring and the second sealing ring to achieve a better sealing effect.

[0017] Furthermore, the spring device in the intermediate pressure chamber is provided on the fixed scroll;

[0018] Furthermore, an annular channel is provided on the fixed scroll;

[0019] Furthermore, the high and low pressure isolation components cooperate with the fixed scroll to seal the annular channel into an intermediate pressure chamber;

[0020] Furthermore, a medium-pressure hole communicating with the compression chamber is machined at the bottom of the annular channel;

[0021] Furthermore, a spring device in the intermediate pressure chamber is provided in the annular channel to adjust the floating posture of the fixed scroll and reduce the assembly accuracy;

[0022] Furthermore, the spring device is composed of two or more springs, all of which are arranged in the annular channel;

[0023] Furthermore, the bottom end of the spring contacts the bottom end of the annular channel, and the top end contacts the bottom end of the annular fixing ring.

[0024] Furthermore, there are one or more medium pressure holes.

[0025] Furthermore, the diameter of the medium-pressure hole is less than or equal to the thickness of the movable scroll blade.

[0026] Furthermore, the high-pressure chamber side spring device is composed of a spring, and the spring is arranged between the central top end of the fixed vortex and the central bottom end of the high- and low-pressure isolation plate.

[0027] Furthermore, the low-pressure chamber spring device is composed of two or more springs, and the springs are all installed between the shoulder of the outer ring of the fixed scroll and the high and low pressure isolation plates.

[0028] Compared with the prior art, the utility model has the following advantages:

[0029] 1. The axial compensation spring structure of the fixed scroll floating compressor, the first sealing ring and the second sealing ring are fixed on the high-low pressure isolation plate by the annular fixing ring, so that the intermediate pressure cavity is formed in cooperation with the fixed scroll, and the fixed scroll adopts the floating mechanism, the compressor assembly process is simple, and the fixed scroll is easy to realize;

[0030] 2. The axial compensation spring structure of the fixed scroll floating compressor, the fixed scroll adopts the floating type, and the up-down floating of the fixed scroll can be realized through the arrangement of the intermediate pressure cavity, the medium pressure hole and the compression chamber, and the liquid impact phenomenon is effectively buffered;

[0031] 3. The axial compensation spring structure of the fixed scroll floating compressor, through the spring device, the assembly precision is reduced, the fixed scroll and the high-low pressure isolation plate are unified, management is facilitated, and the cost is reduced.

[0032] In summary, the technical scheme of the utility model solves the assembly setting cooperation level between the fixed scroll and the high-low pressure isolation plate in the prior art, causes high management cost and part storage and other problems. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and for ordinary skilled in the art, other drawings can be obtained according to these drawings without paying creative labor.

[0034] Figure 1 It is the structure schematic view of the spring device setting in the intermediate pressure cavity in the embodiment 1 of the utility model;

[0035] Figure 2 It is the cooperation drawing of the fixed scroll and the moving scroll in the embodiment 1 of the utility model;

[0036] Figure 3 It is the upper surface schematic view of the fixed scroll in the embodiment 1 of the utility model;

[0037] Figure 4 It is the assembly structure schematic view of the spring device in the embodiment 1 of the utility model;

[0038] Figure 5 It is the structure schematic view of the spring device setting in the high pressure cavity side in the embodiment 2 of the utility model;

[0039] Figure 6 It is the structure schematic view of the spring device setting in the low pressure cavity side in the embodiment 3 of the utility model.

[0040] In the figure: 1, movable scroll 2, fixed scroll 21, annular channel 22, medium pressure hole 3, compression chamber 4, high and low pressure isolation assembly 41, high and low pressure isolation plate 42, first sealing ring 43, second sealing ring 44, annular fixing ring 5, spring device 6, support member 61, pin shaft. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technology, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0045] In the description of the utility model, it is understood that the orientation words such as '' front, back, up, down, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship is usually based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply the device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the restriction of the protection scope of the utility model: the orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0046] For the convenience of description, spatial relative terms can be used here, such as '' above'', '' above'', '' upper surface'', '' upper '' and the like, to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the exemplary term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0047] In addition, it should be noted that the use of '' first '' '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore can not be understood as the restriction of the protection scope of the utility model.

[0048] Example 1

[0049] As shown in the figure, the present invention provides an axial compensation spring structure for a fixed scroll floating compressor, comprising an orbiting scroll 1 and a fixed scroll 2 disposed above and mating with the orbiting scroll 1. The vortex blades of the orbiting scroll and the fixed scroll cooperate to form a compression chamber 3. The fixed scroll 2 floats between the orbiting scroll 1 and the high- and low-pressure isolation assembly 4 via a floating mechanism, with the floating distance being less than the height of the vortex blades of either the orbiting scroll 1 or the fixed scroll 2. The floating mechanism includes a support member 6 located below the orbiting scroll 1 for supporting the orbiting scroll 1. A pin 61 is fixed to the outer edge of the support member 6, and a pin hole is machined in the fixed scroll 2 to flexibly engage with the pin 61. A high- and low-pressure isolation assembly is mounted above the fixed scroll 2. A compensating spring device 5 is disposed between the fixed scroll 2 and the high- and low-pressure isolation assembly 4. The spring device 5 is categorized as one of an intermediate pressure chamber spring device, a high-pressure chamber side spring device, or a low-pressure chamber side spring device. One or more spring devices 5 may be provided.

[0050] like Figure 4 As shown, the high and low pressure isolation assembly 4 includes: a high and low pressure isolation plate 41, a first sealing ring 42, a second sealing ring 43, and an annular fixing ring 44; the high and low pressure isolation plate 41 is arranged above the fixed scroll 2, and the high and low pressure isolation plate 41 is provided with a limit groove for limiting the axial movement of the fixed scroll 2; the annular fixing ring 44 is fixed to the lower surface of the high and low pressure isolation plate 41 (fixed by riveting or fasteners), and extends into the annular channel on the high and low pressure isolation plate 41; the first sealing ring 42 is arranged at the contact point between the inner edge of the annular fixing ring 44 and the inner edge of the annular channel; the second sealing ring 43 is arranged at the contact point between the outer edge of the annular fixing ring 44 and the outer edge of the annular channel; the inner and outer edges of the annular fixing ring 44 are processed with tiny protrusions, which are used to squeeze the first sealing ring 42 and the second sealing ring 43 to achieve a better sealing effect.

[0051] like Figure 1 、 4 As shown, the spring device in the intermediate pressure chamber is arranged on the fixed scroll 2; an annular channel 21 is opened on the fixed scroll 2; the high and low pressure isolation assembly 4 cooperates with the fixed scroll 2 to close the annular channel 21 into an intermediate pressure chamber; the bottom of the annular channel 21 is processed with a medium pressure hole 22 connected to the compression chamber 3; the spring device in the intermediate pressure chamber is arranged in the annular channel 21, which is used to adjust the floating posture of the fixed scroll 2 and reduce the assembly accuracy; the spring device is composed of two springs or more than two springs, which are all arranged in the sinking groove set in the annular channel 21. The depth of the sinking groove depends on the calculation of the assembly dimension chain to ensure that the spring has unlimited service life within the elastic limit; the bottom end of the spring is in contact with the bottom end of the sinking groove, and the top end is in contact with the bottom end of the annular fixing ring 44.

[0052] like Figure 3 As shown, there are one or more medium pressure holes 22. The diameter of the medium pressure hole 22 is less than or equal to the thickness of the vortex blade of the movable scroll 1. The thickness of the vortex blades of the movable scroll 1 and the fixed scroll 2 are equal.

[0053] During operation of the present invention, when the compressor is started, the refrigerant in the compression chamber 3 enters the annular channel 21 through the intermediate pressure hole 22. The annular channel 21 is sealed by the high- and low-pressure partition assembly 4, and the cavity pressure equals the pressure in the compression chamber 3, causing the fixed scroll to be pressed downward. When the compressor is shut down, the pressure in the compression chamber 3 exceeds the cavity pressure in the annular channel, causing the fixed scroll to float upward and be restrained by the annular grooves of the high- and low-pressure partitions. Simultaneously, the spring device activates, providing downward pressure on the fixed scroll, allowing it to return to its original position.

[0054] Example 2

[0055] like Figure 5 As shown, (based on Example 1,) the utility model also provides an axial compensation spring structure for a fixed scroll floating compressor, and the high-pressure chamber side spring device consists of a spring, which is arranged between the central top end of the fixed scroll 2 and the central bottom end of the high- and low-pressure isolation plate 41.

[0056] Example 3

[0057] like Figure 6 As shown, (based on Example 1,) the utility model also provides an axial compensation spring structure for a fixed scroll floating compressor, and the low-pressure chamber spring device is composed of two or more springs, and the springs are all installed between the outer ring shoulder of the fixed scroll 2 and the high and low pressure isolation plate 41.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An axial compensation spring structure for a fixed scroll floating compressor, comprising a movable scroll (1) and a fixed scroll (2) disposed above the movable scroll (1) and matched with the movable scroll, wherein the vortex blades of the movable scroll and the fixed scroll cooperate with each other to form a compression chamber (3); characterized in that: A high- and low-pressure isolation assembly is installed above the fixed vortex (2); A compensating spring device (5) is provided between the fixed vortex (2) and the high- and low-pressure isolation assembly (4); The spring device (5) is divided into one of a spring device in the intermediate pressure chamber, a spring device on the high pressure chamber side, or a spring device on the low pressure chamber side; The spring device (5) can be provided in one or more forms.

2. The axial compensation spring structure of the fixed scroll floating compressor according to claim 1, characterized in that: The high and low pressure isolation assembly (4) comprises: a high and low pressure isolation plate (41), a first sealing ring (42), a second sealing ring (43), and an annular fixing ring (44); The high-low pressure isolation plate (41) is arranged above the fixed scroll (2), and the high-low pressure isolation plate (41) is provided with a limiting groove for limiting the axial movement of the fixed scroll (2); The annular fixing ring (44) is fixed to the lower surface of the high and low pressure isolation plate (41) and extends into the annular channel on the high and low pressure isolation plate (41); The first sealing ring (42) is arranged at the contact point between the inner edge of the annular fixing ring (44) and the inner edge of the annular channel; The second sealing ring (43) is arranged at the contact point between the outer edge of the annular fixing ring (44) and the outer edge of the annular channel; The inner and outer edges of the annular fixing ring (44) are machined with tiny protrusions, which are used to squeeze the first sealing ring (42) and the second sealing ring (43) to achieve a better sealing effect.

3. The axial compensation spring structure of the fixed scroll floating compressor according to claim 1, characterized in that: The spring device in the intermediate pressure chamber is arranged on the fixed scroll (2); The fixed vortex (2) is provided with an annular channel (21); The high and low pressure isolation assembly (4) cooperates with the fixed vortex (2) to seal the annular channel (21) into an intermediate pressure chamber; The bottom of the annular channel (21) is processed with a medium pressure hole (22) connected to the compression chamber (3); The spring device in the intermediate pressure chamber is arranged in the annular channel (21) to adjust the floating posture of the fixed scroll (2) and reduce the assembly accuracy; The spring device is composed of two or more springs, all of which are arranged in the annular channel (21); The bottom end of the spring contacts the bottom end of the annular channel (21), and the top end contacts the bottom end of the annular fixing ring (44).

4. The axial compensation spring structure of the fixed scroll floating compressor according to claim 3, characterized in that: There are one or more medium pressure holes (22).

5. The axial compensation spring structure of the fixed scroll floating compressor according to claim 3, characterized in that: The aperture of the medium-pressure hole (22) is less than or equal to the thickness of the vortex blade of the moving vortex (1).

6. The axial compensation spring structure of the fixed scroll floating compressor according to claim 1, characterized in that: The high-pressure chamber side spring device is composed of a spring, which is arranged between the central top end of the fixed scroll (2) and the central bottom end of the high- and low-pressure isolation plate (41).

7. The axial compensation spring structure of the fixed scroll floating compressor according to claim 1, characterized in that: The low-pressure chamber side spring device is composed of two or more springs, and the springs are all arranged between the outer ring shoulder of the fixed scroll (2) and the high-low pressure isolation plate (41).

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