Oil guide plate mechanism of scroll refrigeration compressor

Abstract

The utility model discloses an oil guide plate mechanism of a scroll type refrigeration compressor, and relates to the technical field of refrigeration scroll compressors, in particular to the oil guide plate mechanism of the scroll type refrigeration compressor. An oil pool is formed by the lower part of a compressor cylinder and a lower cover; the oil suction pipe is inserted into the oil pool; an oil guide plate is arranged in the oil pool; the oil guide plate consists of a flat plate and a cylinder; the cylinder is arranged in the center of the lower part of the oil guide plate; a through hole identical to the cylinder is formed in the center of the oil guide plate. The oil suction pipe is inserted into the cylinder at the lower part of the oil guide plate; a wide annular channel is formed between the oil suction pipe and the cylinder. The bottom of the cylinder is fixedly connected with the inner side of the lower cover, and a gap channel with a small width is reserved between the cylinder and the lower cover. And the flat plate is positioned in an upper frozen oil layer after the frozen oil and the refrigerant oil are layered after long-term standing. According to the technical scheme, the problem that in the prior art, due to the fact that an oil guide pipe is inserted into the bottom of an oil pool, a large amount of liquid refrigerant is sucked in the starting-up process, all friction faces are poor in lubrication, and a compressor is damaged is solved.

Description

Technical Field

[0001] This utility model relates to the oil guide plate mechanism of a scroll refrigeration compressor, and particularly to an oil guide plate mechanism for a scroll refrigeration compressor. Background Technology

[0002] When scroll compressors are used for refrigeration or heat pump applications, the poor miscibility between refrigeration oil and refrigerant can cause them to separate into layers over a long period of time. The upper part of the oil sump contains more refrigeration oil, while the lower part contains more refrigerant. In traditional structures, the oil suction pipe is inserted directly into the lower part of the oil sump. When the compressor is started, a large amount of liquid refrigerant will be drawn in, resulting in poor lubrication of the friction surfaces and damage to the compressor.

[0003] In view of the problems existing in the above-mentioned prior art, it is necessary to study and design a new type of scroll refrigeration compressor oil guide plate mechanism to overcome the problems existing in the prior art. Summary of the Invention

[0004] The prior art addresses the technical problem of oil guide pipes being inserted into the bottom of the oil sump, leading to the intake of a large amount of liquid refrigerant during startup, causing poor lubrication of the friction surfaces and resulting in compressor damage. This invention provides an oil guide plate mechanism for a scroll-type refrigeration compressor. The main feature of this invention is the arrangement of an oil guide plate within the oil sump, dividing it into upper and lower sections. The system prioritizes drawing refrigerant oil from the upper section, reducing the impact of refrigerant oil stratification on the compressor.

[0005] The technical means adopted in this utility model are as follows:

[0006] An oil guide plate mechanism for a scroll refrigeration compressor includes: an oil suction pipe, a lower cover, and a compressor cylinder; the lower part of the compressor cylinder and the lower cover form an oil sump; the oil suction pipe is inserted into the oil sump;

[0007] Furthermore, an oil guide plate is installed inside the oil tank;

[0008] Furthermore, the oil suction pipe is inserted into the oil guide plate.

[0009] Furthermore, the oil guide plate consists of a flat plate and a cylinder;

[0010] Furthermore, the cylinder is positioned at the lower center of the oil guide plate;

[0011] Furthermore, the center of the oil guide plate has a through hole identical to that of the cylinder.

[0012] Furthermore, the oil suction pipe is inserted into the interior of the cylinder at the bottom of the oil guide plate;

[0013] Furthermore, a relatively wide annular channel is formed between the oil suction pipe and the cylinder.

[0014] Furthermore, the bottom of the cylinder is fixedly connected to the inside of the lower cover, with a narrow gap between them.

[0015] Furthermore, the plate is located in the upper layer of refrigeration oil after the refrigeration oil and refrigerant oil have separated due to long-term standing.

[0016] The working principle of this utility model is as follows:

[0017] Dividing the oil tank into upper and lower layers through physical measures and rationally allocating the flow area to create different resistances, and prioritizing the extraction of refrigeration oil from the upper part of the oil tank, will reduce the impact of refrigeration oil stratification.

[0018] The flat section of the oil guide plate directly divides the oil sump into upper and lower parts. When left for a long time, the refrigerant will settle in the lower part under the action of gravity. The cylinder of the oil guide plate forms two channels with different areas, one large and one small, with a large area difference. This results in a large flow resistance, which causes more refrigerant oil to enter the oil inlet of the oil suction pipe from the top of the oil sump through the annular channel on the outside of the oil suction pipe when the compressor is running, and then to various friction surfaces, ensuring effective lubrication of the compressor.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The scroll-type refrigeration compressor oil guide plate mechanism provided by this utility model achieves separation of liquid refrigerant and refrigeration oil through the oil guide plate surface in working conditions such as low ambient temperature, defrosting, and long-term shutdown when a large amount of liquid refrigerant enters the compressor suction pipe. This ensures that the liquid on the oil suction pipe pump during compressor operation is as much as possible refrigeration oil, thus ensuring the reliability of the compressor under harsh working conditions.

[0021] 2. The scroll-type refrigeration compressor oil guide plate mechanism provided by this utility model has a gap between the oil guide plate and the lower cover. When the amount of oil in the compressor decreases during operation and the oil level is lower than the height of the oil guide plate, the refrigeration oil can flow into the oil guide plate through the gap, ensuring that the oil suction pipe can continuously pump oil and ensuring the reliability of the compressor.

[0022] 3. The scroll-type refrigeration compressor oil guide plate mechanism provided by this utility model has a simple structure and strong feasibility.

[0023] In summary, the technical solution of this utility model solves the problem in the prior art where the oil guide pipe is inserted into the bottom of the oil sump, causing a large amount of liquid refrigerant to be drawn in when the machine is started, resulting in poor lubrication of the friction surfaces and damage to the compressor. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a top view of the oil guide plate portion of this utility model;

[0027] Figure 3 The attached drawing shows the connection between the oil guide plate and the lower cover of this utility model.

[0028] In the diagram: 1. Oil suction pipe; 2. Oil guide plate; 3. Lower cover; 4. Oil tank; 5. Flat plate; 6. Cylinder; 7. Annular channel; 8. Bottom protrusion; 9. Other parts; 10. Gap channel; 11. Inlet. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] like Figure 1 As shown, this utility model provides an oil guide plate mechanism for a scroll refrigeration compressor, including: an oil suction pipe 1, a lower cover 3 and a compressor cylinder; the lower part of the compressor cylinder and the lower cover 3 form an oil sump 4; the oil suction pipe 1 is inserted into the oil sump 4; an oil guide plate 2 is provided in the oil sump 4; the oil suction pipe 1 is inserted into the oil guide plate 2.

[0037] like Figure 1 , 2 As shown, the oil guide plate 2 is composed of a flat plate 5 and a cylinder 6; the cylinder 6 is located at the lower center of the oil guide plate 2; the center of the oil guide plate 2 has a through hole identical to that of the cylinder 6.

[0038] like Figure 1 As shown, the oil suction pipe 1 is inserted into the interior of the cylinder 6 at the lower part of the oil guide plate 2; a relatively wide annular channel 7 is formed between the oil suction pipe 1 and the cylinder 6.

[0039] like Figure 1 , 3 As shown, the bottom protrusion 8 of the cylinder 6 is welded to the inner side of the lower cover 3, and the other parts 9 at the bottom of the cylinder 6 form a narrow gap channel 10 with the lower cover 3.

[0040] like Figure 1 As shown, plate 5 is located in the upper refrigeration oil layer after the refrigeration oil and refrigerant oil have separated after a long period of standing.

[0041] like Figure 1 , 3 As shown, the flow area of ​​the annular channel 7 is much larger than that of the slit channel 10, resulting in a much smaller flow resistance in the annular channel 7 compared to the slit channel 10. This makes it easier for the refrigeration oil in the upper part of the oil tank 4 to be sucked into its inlet 11 by the oil suction pipe 1.

[0042] 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. An oil guide plate mechanism for a scroll refrigeration compressor, comprising: An oil suction pipe (1), a lower cover (3) and a compressor cylinder; the lower part of the compressor cylinder and the lower cover (3) form an oil pool (4); the oil suction pipe (1) is inserted into the oil pool (4); the characteristics are: An oil guide plate (2) is arranged in the oil pool (4); The oil suction pipe (1) is inserted into the oil guide plate (2).

2. The scroll refrigeration compressor oil guide plate mechanism according to claim 1, characterized in that: The oil guide plate (2) is composed of a flat plate (5) and a cylinder (6); The cylinder (6) is arranged at the lower center of the oil guide plate (2); The center of the oil guide plate (2) is provided with a through hole which is the same as that of the cylinder (6).

3. The scroll refrigeration compressor oil guide plate mechanism according to claim 1, characterized in that: The oil suction pipe (1) is inserted into the interior of the cylinder (6) at the lower part of the oil guide plate (2); A relatively wide annular channel (7) is formed between the oil suction pipe (1) and the cylinder (6).

4. The scroll refrigeration compressor oil guide plate mechanism according to claim 2, characterized in that: The bottom of the cylinder (6) is fixedly connected to the inner side of the lower cover (3), and a narrow gap channel (10) is left between the two.

5. The scroll refrigeration compressor oil guide plate mechanism according to claim 2, characterized in that: The flat plate (5) is located in the upper refrigeration oil layer after the refrigeration oil and the refrigerant oil are separated after being left still for a long time.

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