Fixed scroll axial floating scroll compressor

Abstract

The utility model discloses a fixed scroll axial floating scroll compressor, and relates to the technical field of compressors, in particular to a fixed scroll axial floating scroll compressor. An annular channel is arranged on the upper surface of a fixed vortex; a high-low pressure isolation plate is arranged above the fixed vortex, and an annular channel arranged between the fixed vortex and the high-low pressure isolation plate is sealed through a first sealing ring and a second sealing ring; and the fixed vortex floats between the fixed vortex and the high-low pressure isolation plate through the floating mechanism. According to the technical scheme, the problem that in the prior art, under the working condition that the superheat degree is low, the vortex tooth is broken due to liquid impact, and therefore a traditional axial fixing structure needs to thicken the vortex tooth or narrow the operation range is solved. Meanwhile, the problems that according to a traditional axial fixing structure, the crest leakage of movable and fixed vortex teeth is large, the input power is increased, and the energy efficiency is reduced are solved.

Description

Technical Field

[0001] This utility model relates to a fixed-scroll axial floating scroll compressor, and more particularly to a fixed-scroll axial floating scroll compressor. Background Technology

[0002] Currently, conventional compressors, when encountering low-temperature operating conditions, are prone to scroll tooth breakage due to liquid slugging. Therefore, traditional axially fixed structures must either thicken the scroll teeth or reduce their operating range. Furthermore, traditional axially fixed structures suffer from significant leakage at the tips of the moving and stationary scroll teeth, leading to increased input power and reduced energy efficiency.

[0003] However, the existing axial floating compressors use an integrated structure for the high and low pressure isolation plates. Although this makes assembly easier, it requires high assembly precision and results in high management costs.

[0004] In view of the problems existing in the above-mentioned prior art, it is necessary to research and design a new type of fixed scroll axial floating scroll compressor to overcome the problems existing in the prior art. Summary of the Invention

[0005] The existing technology addresses the issue that under low-temperature operating conditions, liquid slugging can cause the scroll teeth to break. Therefore, traditional axially fixed structures require thicker scroll teeth or a reduced operating range. Furthermore, traditional axially fixed structures suffer from significant leakage at the tips of the moving and fixed scroll teeth, leading to increased input power and reduced energy efficiency. This leads to the development of a fixed-scroll axially floating scroll compressor.

[0006] The technical means adopted in this utility model are as follows:

[0007] A fixed-scroll axial floating scroll compressor includes: a housing; a floating mechanism is interference-fitted into the upper middle part of the housing; a fixed scroll is mounted on the floating mechanism; the scroll blades of the fixed scroll and the moving scroll cooperate to form a compression chamber; the compression chamber is connected to an annular channel through a medium-pressure hole; characterized in that:

[0008] Furthermore, the annular channel is disposed on the upper surface of the fixed vortex;

[0009] Furthermore, a high-low pressure isolation plate is provided above the fixed vortex, and the annular channel between the fixed vortex and the high-low pressure isolation plate is sealed by the first sealing ring and the second sealing ring.

[0010] Furthermore, the fixed vortex floats between the fixed vortex and the high and low pressure isolation plates via a floating mechanism.

[0011] Furthermore, the annular channel is located on the upper surface of the fixed vortex and is sealed by high and low pressure isolation plates, a first sealing ring, and a second sealing ring to form a sealed annular channel;

[0012] Furthermore, the first sealing ring is placed inside the annular channel, with one side of it adhering to the lower end face of the high and low pressure isolation plate and the other side adhering to the lower end face of the annular channel;

[0013] Furthermore, the second sealing ring is installed between the high and low pressure isolation plate and the fixed vortex valve seat of the fixed vortex valve, with one side of it attached to the inner side of the high and low pressure isolation plate and the other side attached to the fixed vortex valve seat.

[0014] Furthermore, a shallower step is machined on the upper surface of the annular channel to fix the first V-ring and prevent it from moving and wearing out, thereby achieving a better sealing effect.

[0015] Furthermore, the fixed vortex valve seat is provided with stepped differentials to facilitate the placement of the second sealing ring, thereby achieving the effect of sidewall sealing.

[0016] Furthermore, the fixed vortex is provided with a medium-pressure hole that connects the annular channel and the compression chamber. The gas in the compression chamber enters the medium-pressure chamber through the medium-pressure hole, and under the action of gas pressure, the fixed vortex and the moving vortex are axially sealed.

[0017] Furthermore, the floating mechanism includes: a support component and a pin;

[0018] Furthermore, the support member is located at the lower part of the stationary vortex to support the moving vortex;

[0019] Furthermore, the pin is fixedly mounted near the outer edge of the support member;

[0020] Furthermore, the pin shaft and the pin hole machined on the fixed volute are in a movable fit to restrict the circumferential and radial movement of the fixed volute, but do not restrict the axial movement of the fixed volute.

[0021] Furthermore, the pins are assembled with an interference fit with the support components, and the quantity is set to two.

[0022] Furthermore, the first and second sealing rings are either V-type or O-type, and are sealing rings that can seal the annular channel.

[0023] The working process of this utility model is as follows:

[0024] During operation, the pressure in the compressor's intermediate compression chamber enters the intermediate pressure chamber through the intermediate pressure hole. The first V-shaped sealing ring expands under pressure, tightly adhering to the lower surface of the annular channel and the lower surface of the partition on both sides. Simultaneously, the high-pressure side pressure acts on the second V-shaped sealing ring, causing its two sides to tightly adhere to the inner surface of the partition and the outer circular surface of the fixed scroll valve seat. The intermediate pressure chamber thus formed causes the fixed scroll to press down, ensuring axial sealing between the scroll teeth.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. This utility model provides a fixed-scroll axial floating scroll compressor, in which an annular channel is opened in the fixed scroll and sealed by a partition and a sealing ring. When the fixed scroll builds up intermediate pressure, it can effectively reduce tooth tip leakage and improve performance.

[0027] 2. The fixed scroll axial floating scroll compressor provided by this utility model adopts a first V-type sealing ring and a second V-type seal in combination with a high and low pressure isolation plate and a fixed scroll to form an intermediate pressure chamber, which saves the number of parts, reduces costs, facilitates compressor installation, and reduces management costs.

[0028] In summary, the technical solution of this utility model solves the problem that in existing compressors, liquid slugging can cause the scroll teeth to break when encountering low-temperature operating conditions. Therefore, traditional axially fixed structures require thicker scroll teeth or a reduced operating range. Furthermore, traditional axially fixed structures suffer from significant leakage at the top of the moving and stationary scroll teeth, leading to increased input power and reduced energy efficiency. This solution also optimizes the high and low pressure baffle integrated structure, reducing assembly precision requirements and rationalizing costs. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 An enlarged view of the medium-pressure cavity structure of this utility model;

[0032] Figure 3 This is a diagram showing the fit between the fixed vortex and the moving vortex of this utility model;

[0033] Figure 4 This is a schematic diagram of the fixed vortex annular channel of this utility model.

[0034] In the figure: 1. Moving vortex 2. Fixed vortex 21. Annular channel 22. Medium pressure hole 23. Fixed vortex valve seat 3. Compression chamber 4. High and low pressure isolation plate 41. First sealing ring 42. Second sealing ring 5. Housing 6. Support 61. Pin. Detailed Implementation

[0035] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] In the description of this utility model, 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 usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model 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 utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0040] For ease of description, spatial relative terms such as "above," "over," "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 besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" 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.

[0041] 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 cannot be construed as limiting the scope of protection of this utility model.

[0042] like Figure 1-4 As shown, this utility model provides a fixed-scroll axial floating scroll compressor, including: a scroll compression assembly, a high-low pressure isolation plate 4, and a sealing ring. The scroll compression assembly includes a moving scroll 1 and a fixed scroll 2 disposed above the moving scroll 1 and cooperating with the moving scroll 1. The scroll blades of the moving scroll 1 and the fixed scroll 2 cooperate with each other to form a compression chamber 3. The high-low pressure isolation plate 4 is located above the fixed scroll 2. An annular channel 21 is machined on the upper surface of the fixed scroll 2. The high-low pressure isolation plate is disposed above the fixed scroll. The annular channel 21 is sealed by a first sealing ring 41 and a second sealing ring 42.

[0043] The bottom of the intermediate pressure chamber 21 is machined with an intermediate pressure hole 22 that communicates with the compression chamber 3. The gas in the compression chamber 3 enters the intermediate pressure chamber 21 through the intermediate pressure hole 22. Under the action of gas pressure, the fixed vortex 2 and the moving vortex 1 are axially sealed.

[0044] The stationary vortex 2 floats between the moving vortex 1 and the high-low pressure isolation plate 4 via a floating mechanism. The floating distance is less than the height of the vortex blades of the moving vortex 1 or the stationary vortex 2. The floating mechanism includes a support member 6 located below the moving vortex 1 to support the moving vortex 1, and a pin 61 is fixed to the outer edge of the support member 6. The stationary vortex 2 is machined with a pin hole that movably engages with the pin 61.

[0045] The compressor's intermediate compression chamber consists of: a high-low pressure isolation plate 4, a first sealing ring 41, a second sealing ring 42, and a fixed scroll 2;

[0046] Pressure enters the annular channel through the medium-pressure hole 22 of the fixed vortex 2. The first sealing ring 41 is placed inside the annular channel 21, with one side of it attached to the lower end face of the high and low pressure isolation plate 4 and the other side attached to the lower end face of the annular channel 21. Under the action of gas force, it expands and the two sides can fit tightly together to reduce leakage.

[0047] The second sealing ring 42 is installed between the high and low pressure isolation plate 4 and the fixed vortex valve seat 23. One side of it is attached to the inner side of the high and low pressure isolation plate 4, and the other side is attached to the outer surface of the fixed vortex valve seat 23. The high pressure side pressure acts on the second sealing ring 42, so that its two sides can fit tightly together and reduce leakage.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fixed-scroll axial floating scroll compressor, comprising: The housing (5) is fitted with a floating mechanism in the upper middle part of the housing (5); a fixed vortex (2) is mounted on the floating mechanism; the vortex blades of the fixed vortex (2) and the moving vortex (1) cooperate to form a compression chamber (3); the compression chamber (3) is connected to the annular channel (21) through the intermediate pressure hole (22); the feature is that: The annular channel (21) is disposed on the upper surface of the fixed vortex (2); a high-low pressure isolation plate (4) is disposed above the fixed vortex (2), and the annular channel (21) disposed between the fixed vortex (2) and the high-low pressure isolation plate (4) is sealed by the first sealing ring (41) and the second sealing ring (42); the fixed vortex (2) floats between the moving vortex (1) and the high-low pressure isolation plate (4) by a floating mechanism; The annular channel (21) is located on the upper surface of the fixed vortex (2) and is sealed by the high and low pressure isolation plate (4), the first sealing ring (41) and the second sealing ring (42) to form a sealed annular channel (21). The first sealing ring (41) is placed inside the annular channel (21), with one side attached to the lower end face of the high and low pressure isolation plate (4) and the other side attached to the lower end face of the annular channel (21). The second sealing ring (42) is installed between the high and low pressure isolation plate (4) and the fixed vortex valve seat (23) of the fixed vortex (2), with one side attached to the inner side of the high and low pressure isolation plate (4) and the other side attached to the fixed vortex valve seat (23). The upper surface of the annular channel (21) is machined with a shallow step to fix the first sealing ring (41) and prevent the first sealing ring (41) from moving and wearing, thereby achieving a better sealing effect; The fixed vortex valve seat (23) is provided with stepped differences to facilitate the placement of the second sealing ring (42), thereby achieving the effect of side wall sealing.

2. The fixed-scroll axial floating scroll compressor according to claim 1, characterized in that: The fixed vortex (2) is provided with a medium pressure hole (22) that connects the annular channel (21) and the compression chamber (3). The gas in the compression chamber (3) enters the annular channel (21) through the medium pressure hole (22). Under the action of gas pressure, the fixed vortex (2) and the moving vortex (1) are axially sealed.

3. The fixed-scroll axial floating scroll compressor according to claim 1, characterized in that: The floating mechanism includes: a support (6) and a pin (61); The support member (6) is located at the lower part of the moving vortex (1) and is used to support the moving vortex (1). The pin (61) is fixedly mounted near the outer edge of the support (6); The pin (61) is in active engagement with the pin hole machined on the fixed vortex (2) to restrict the circumferential and radial movement of the fixed vortex (2), but does not restrict the axial movement of the fixed vortex (2).

4. The fixed-scroll axial floating scroll compressor according to claim 3, characterized in that: The pin (61) and the support (6) are assembled with an interference fit, and the quantity is set to two.

5. The fixed-scroll axial floating scroll compressor according to claim 1, characterized in that: The first sealing ring (41) and the second sealing ring (42) are either V-type or O-type sealing rings that can seal the annular channel.

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