Oil baffle plate mechanism of scroll refrigeration compressor
By setting up an oil barrier in the scroll compressor to separate the oil pool from the upper space, the oil shortage problem caused by rapid gasification of liquid refrigerant is solved, and the reliability of the compressor in harsh working conditions is improved.
Patent Information
- Application Number
- CN202421045011.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In a scroll compressor, when the suction pipe is arranged under the motor, the liquid refrigerant quickly vaporizes, creating a large number of bubbles, causing the compressor to lack oil, which in turn causes wear and tear failure.
A scroll refrigeration compressor oil baffle mechanism is designed. By setting an oil baffle plate above the oil baffle plate, the lower oil baffle and the upper space are maximized, and the negative pressure caused by suction flow on the oil baffle is reduced.
Effectively slow down the speed of the pressure reduction above the oil pool, weaken the degree of foaming of the refrigerated oil, avoid compressor failure, and improve the reliability of the compressor under harsh working conditions.
Smart Images
Figure CN222558763U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses an oil baffle mechanism for a scroll type refrigeration compressor, and relates to the technical field of scroll compressors, in particular to an oil baffle mechanism for a scroll compressor. Background Art
[0002] When the scroll compressor is used in refrigeration or heat pump applications, especially when the suction pipe is arranged under the motor, when the defrosting is completed and the compressor is started again, the liquid refrigerant accumulated in the compressor oil pool will quickly vaporize due to the negative pressure above the oil pool. The large number of bubbles during vaporization will cause the refrigerant oil to swell and leave the oil pool with the flowing refrigerant, causing the compressor to lack oil when it is started. If the oil shortage lasts for a long time, the compressor will suffer from wear and failure.
[0003] In view of the problems existing in the above-mentioned prior art, it is very necessary to study and design a new type of scroll refrigeration compressor oil baffle mechanism to overcome the problems existing in the prior art. Summary of the invention
[0004] According to the above-mentioned prior art, when the suction pipe is not under the motor, the liquid refrigerant will be quickly gasified when the machine is turned on, and a large number of bubbles will leave the oil pool with the flowing refrigerant, causing the compressor to lack oil, resulting in the technical problem of wear and failure of the compressor, and a scroll refrigeration compressor oil baffle mechanism is provided. The utility model mainly utilizes an oil baffle plate arranged above the oil pool to separate the oil pool from the upper part as much as possible, reducing the influence of the negative pressure caused by the suction flow on the oil pool.
[0005] The technical means adopted by the utility model are as follows:
[0006] An oil baffle mechanism for a scroll refrigeration compressor comprises: a motor, a housing, a lower support, and an oil guide pipe;
[0007] Further, a circular oil baffle is provided at the lower part of the lower support;
[0008] Furthermore, the oil baffle plate forms a transition fit with the housing;
[0009] Furthermore, the oil guide pipe is inserted into a notch reserved on one side of the oil baffle plate and inserted into the oil pool.
[0010] Furthermore, a gap is left between the oil baffle plate and the crankshaft.
[0011] Furthermore, a channel is formed between the oil guide pipe and the notch.
[0012] Furthermore, an air intake pipe is provided on the shell;
[0013] Further, the air intake duct is located between the motor and the lower support.
[0014] The working principle of the utility model is:
[0015] When the compressor is turned on, the refrigerant below the motor starts to flow from static state, and the pressure drops significantly. Because the clearance between the baffle and the shell is very small, the upper and lower spaces form a large flow resistance, and the pressure drop rate in the lower space is much lower than that in the upper space, so the refrigerant mixed in the oil pool will not be quickly vaporized. A gap is reserved on the oil baffle for the oil guide pipe to pass through, and the gap is used to ensure that the refrigerant oil brought back by the suction air flows into the oil pool.
[0016] Slowing down the rate at which the pressure above the oil pool decreases will reduce the degree of foaming of the refrigerant oil and thus avoid compressor failure.
[0017] Compared with the prior art, the utility model has the following advantages:
[0018] 1. The oil baffle mechanism of the scroll refrigeration compressor provided by the utility model realizes the separation of the lower oil pool and the upper space to the maximum extent through the cooperation of the oil baffle, the shell and the crankshaft, so that when the liquid refrigerant enters the compressor, the impact on the oil pool is minimized, thereby improving the reliability of the compressor under harsh working conditions such as defrosting, low ambient temperature and starting after long-term shutdown.
[0019] 2. The oil baffle mechanism of the scroll refrigeration compressor provided by the utility model ensures the smooth flow of the oil return oil circuit by setting the gap of the oil guide pipe and the gap between the oil guide plate and the shell and the crankshaft, so that the refrigeration oil can return to the lower oil pool of the compressor normally, ensuring the oil circuit circulation.
[0020] 3. The scroll refrigeration compressor oil baffle mechanism provided by the utility model has a simple structure and strong feasibility.
[0021] In summary, the technical solution of the utility model solves the problem in the prior art that when the suction pipe is not under the motor, the liquid refrigerant will quickly vaporize when the machine is started, and a large number of bubbles generated will leave the oil pool with the flowing refrigerant, causing the compressor to lack oil and lead to wear and failure of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0023] Figure 1 It is a schematic diagram of the structure of the utility model;
[0024] Figure 2This is a top view of the oil baffle assembly of the utility model.
[0025] In the figure: 1, motor 2, housing 3, intake pipe 4, oil baffle 5, lower support 6, oil guide pipe 7, oil pool 8, notch 9, channel 10, lower space 11, upper space 12, crankshaft 13, gap. DETAILED DESCRIPTION
[0026] 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.
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0028] 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 utility model. 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0029] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values do not limit the scope of the utility model. 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, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0030] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0032] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0033] like Figure 1 As shown, the utility model provides an oil baffle mechanism for a scroll refrigeration compressor, comprising: a motor 1, a housing 2, a lower support 5, and an oil guide pipe 6; a circular oil baffle 4 is provided at the lower portion of the lower support 5; the oil baffle 4 forms a transition fit with the housing 2; the oil guide pipe 6 is inserted into a notch 8 reserved on one side of the oil baffle 4, and is inserted into an oil pool 7.
[0034] like Figure 1 , 2 As shown, a gap 13 is left between the oil baffle plate 4 and the crankshaft 12 .
[0035] like Figure 2 As shown, a channel 9 is formed between the oil guide pipe 6 and the notch 8 .
[0036] like Figure 1 , 2As shown, an air intake pipe 3 is also provided on the housing 2 ; the air intake pipe 3 is located between the motor 1 and the lower support 5 .
[0037] When the machine is turned on, the refrigerant in the space below the motor 1 changes from static to flowing, causing the pressure P2 to drop significantly. The oil baffle 4 is used to divide the space between the motor 1 and the oil pool 7 into an upper space 11 and a lower space 10. There is a channel 9 and a gap 13 between the upper space 11 and the lower space 10. The flow area is very small and the resistance is very large, which slows down the reduction speed of the pressure P1 in the lower space 10 above the oil pool and weakens the foaming degree of the refrigerant mixed in the oil pool 7.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An oil baffle mechanism for a scroll refrigeration compressor, comprising: A motor (1), a housing (2), a lower support (5), and an oil guide pipe (6); the characteristics are: A circular oil baffle plate (4) is provided at the lower part of the lower support (5); The oil baffle plate (4) forms a transition fit with the housing (2); The oil guide pipe (6) is inserted into a notch (8) reserved on one side of the oil baffle plate (4) and inserted into the oil pool (7).
2. The scroll refrigeration compressor oil baffle mechanism according to claim 1, characterized in that: A gap (13) is left between the oil baffle plate (4) and the crankshaft (12).
3. The scroll refrigeration compressor oil baffle mechanism according to claim 1, characterized in that: A channel (9) is formed between the oil guide pipe (6) and the notch (8).
4. The scroll refrigeration compressor oil baffle mechanism according to claim 1, characterized in that: The housing (2) is also provided with an air intake pipe (3); The air intake pipe (3) is located between the motor (1) and the lower support (5).