CN219101595U - Auxiliary bearing oil supply assembly and horizontal scroll compressor - Google Patents

Abstract

The utility model provides an auxiliary bearing oil supply assembly and a horizontal scroll compressor, wherein the auxiliary bearing oil supply assembly comprises: a rear housing; an oil pool is arranged in the rear shell; the auxiliary bearing seat is arranged on the rear shell and supports the crankshaft to rotate, and an oil supply through hole is formed in the auxiliary bearing seat along the radial direction; and one end of the oil suction pipe is communicated with the oil supply through hole, the other end of the oil suction pipe is immersed in the oil pool, and negative pressure is formed in the auxiliary bearing seat along with the rotation of the crankshaft so as to suck lubricating oil in the oil pool through the oil suction pipe. The utility model can adopt the differential pressure oil suction pipe to supply oil for the auxiliary bearing, and ensure that enough lubricating oil is provided for lubricating each friction pair in the compressor system so as to improve the efficiency and the service life of the compressor.

Description

Auxiliary bearing oil supply assembly and horizontal scroll compressor

Technical Field

The utility model relates to the field of refrigeration equipment, in particular to an auxiliary bearing oil supply assembly and a horizontal scroll compressor.

Background

The prior horizontal scroll compressor structure has the defect that the lubricating effect on the oil supply of the auxiliary bearing in the prior horizontal scroll compressor is seriously influenced because the auxiliary bearing positioned on the central shaft is far away from the oil surface positioned at the bottom due to the inherent factors of the overall structure arrangement.

CN110953158A provides an oil storage structure, a horizontal scroll compressor and an air conditioner, the oil storage structure includes: the oil storage cavity is internally provided with lubricating oil, the lubricating oil is collected into an oil pool in the oil storage cavity, the oil storage cavity is isolated from a motor component of the compressor, and the oil storage cavity can supply oil to a central oil hole of a crankshaft piece; and one end of the oil return pipe is communicated with the oil storage cavity, the other end of the oil return pipe is communicated with the lubricating part of the compressor, and the central oil hole is used for supplying lubricating oil to the lubricating part, so that after the lubricating work is finished, the lubricating oil flows back to the oil storage cavity through the oil return pipe. The oil storage structure of the utility model prevents the direct contact quantity of the lubricating oil and the motor rotor, the rotor can not stir the lubricating oil in a large area when the compressor runs, the supply stability of the lubricating oil is improved, meanwhile, the lubricating oil forms an oil pool with a certain oil surface height in the oil storage cavity, the liquid level of the oil pool is stable, the oil pool is closer to the central oil hole of the crankshaft, and enough lubricating oil can be ensured to be provided for lubricating each friction pair in the compressor system. This patent requires a dedicated oil reservoir and requires a sump having a certain oil level to ensure adequate lubrication to lubricate the various friction pairs in the compressor system, including the oil supply and lubrication of the auxiliary bearings. Because of the existence of the oil storage cavity, the oil filling amount is increased, the overall size of the compressor is increased, and the weight of the whole machine and the size of the required installation space are affected.

CN201771775U provides a negative pressure oil and gas supply assembly of a horizontal scroll compressor, the assembly comprises a fixed scroll, a movable scroll, a needle bearing, a shaft sleeve, a cross slip ring, a support, a main rolling bearing, an eccentric crankshaft, a motor, an auxiliary bearing, a front shell and a rear shell, the fixed scroll and the movable scroll form a gas compression volume cavity, the needle bearing and the cross slip ring are arranged on the support, the main rolling bearing is arranged at one end of the eccentric crankshaft, the auxiliary bearing is arranged at the other end of the eccentric crankshaft, the front shell and the rear shell are connected to form a closed space, the compressor is arranged in the space, the eccentric crankshaft is provided with a combined oil and gas through hole, the combined oil and gas through hole is formed by a large oil gas hole pipeline and a small oil gas hole pipeline which are connected with each other, the small oil gas hole pipeline is connected with the gas compression volume cavity, a pump sheet is arranged in the large oil gas hole pipeline, and the large oil gas hole pipeline is connected with the auxiliary bearing. Compared with the prior art, the utility model has the advantages of good oil supply and lubrication effects and the like. The auxiliary bearing of the patent axially realizes oil supply and lubrication through crank oil pumping, oil supply lubrication is realized by oil mist through small holes on the side face in the radial direction, and the reliability of the auxiliary bearing can be influenced finally due to the fact that the running range of the compressor is wider, the state of the oil mist is unstable, and the possibility of unstable oil supply exists.

The above 2 patents, because of the oil supply structure of the auxiliary bearing, have the possibility of affecting the weight/installation space of the whole machine or unstable oil supply, and the reliable and stable oil supply lubrication technical scheme of the auxiliary bearing is not fully completed.

Accordingly, the present utility model provides an auxiliary bearing oil supply assembly and a horizontal scroll compressor.

Disclosure of Invention

Aiming at the problems in the prior art, the auxiliary bearing oil supply assembly and the horizontal scroll compressor overcome the difficulties in the prior art, and can adopt the differential pressure oil suction pipe to supply oil for the auxiliary bearing, so as to ensure that enough lubricating oil is provided for lubricating each friction pair in a compressor system, thereby improving the efficiency and the service life of the compressor.

An embodiment of the present utility model provides a secondary bearing oil supply assembly comprising:

a rear housing; an oil pool is arranged in the rear shell;

the auxiliary bearing seat is arranged on the rear shell and supports the crankshaft to rotate, and an oil supply through hole is formed in the auxiliary bearing seat along the radial direction;

and one end of the oil suction pipe is communicated with the oil supply through hole, the other end of the oil suction pipe is immersed in the oil pool, and negative pressure is formed in the auxiliary bearing seat along with the rotation of the crankshaft so as to suck lubricating oil in the oil pool through the oil suction pipe.

Preferably, the oil suction pipe comprises a bending part and a vertical part, wherein the upper end of the bending part is communicated with the oil supply through hole, the lower end of the bending part is communicated with the upper end of the vertical part, and the lower end of the vertical part is immersed in the oil pool.

Preferably, the oil suction pipe comprises a suction pipe immersed in the oil pool and an elastic pipe which is hermetically sleeved on the suction pipe and is in bending communication with the oil supply through hole.

Preferably, a filter screen is arranged in the suction pipe.

Preferably, the local elastic tube of the suction tube is in sealing sleeve connection to form the vertical part, and the rest of the local elastic tubes form the bending part.

Preferably, the rear shell is provided with two screw joints, and a crack for limiting the oil suction pipe is formed between the screw joints.

Preferably, the oil suction pipe is embedded into the crack, and the screw bases are respectively screwed with the same gasket to cover the crack.

Preferably, the opening direction of the oil supply through hole is perpendicular to the extending direction of the vertical portion.

Embodiments of the present utility model also provide a horizontal scroll compressor including: the auxiliary bearing oil supply assembly.

Preferably, the oil supply through hole is located within an orientation range defined by a duct of an intake port of a rear shell of the horizontal scroll compressor.

The compressor can adopt the differential pressure oil suction pipe to supply oil for the auxiliary bearing, so that enough lubricating oil is ensured to be provided for lubricating each friction pair in the compressor system, and the efficiency and the service life of the compressor are improved.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings.

FIG. 1 is a cross-sectional view of a horizontal scroll compressor having an auxiliary bearing oil supply assembly of the present utility model.

Fig. 2 is a cross-sectional view taken along A-A in fig. 1.

Fig. 3 is a cross-sectional view of fig. 2 without the oil suction pipe assembled.

Fig. 4 is a schematic view of an oil suction pipe in the sub-bearing oil supply unit of the present utility model.

Fig. 5 is a side view of a rear housing in the sub-bearing oil supply assembly of the present utility model.

Reference numerals

1. Auxiliary bearing pedestal

2. Rear shell

3. Oil suction pipe

31. Bending part

32. Vertical part

33. Suction pipe

4. Bolt

5. Gasket

6. Elastic tube

7. Crankshaft

8. Main bearing

9. Motor with a motor housing

10. Vortex disc

11. Auxiliary bearing

12. Suction port

13. Oil supply through hole

Detailed Description

Other advantages and effects of the present application will be readily apparent to those skilled in the art from the present disclosure, by describing embodiments of the present application with specific examples. The present application may be embodied or applied in other specific forms and details, and various modifications and alterations may be made to the details of the present application from different points of view and application without departing from the spirit of the present application. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

The embodiments of the present application will be described in detail below with reference to the drawings so that those skilled in the art to which the present application pertains can easily implement the same. This application may be embodied in many different forms and is not limited to the embodiments described herein.

In the description of the present application, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples, and features of the various embodiments or examples, presented herein may be combined and combined by those skilled in the art without conflict.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the context of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

For the purpose of clarity of the description of the present application, components that are not related to the description are omitted, and the same or similar components are given the same reference numerals throughout the description.

Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" with other elements interposed therebetween. In addition, when a certain component is said to be "included" in a certain device, unless otherwise stated, other components are not excluded, but it means that other components may be included.

When a device is said to be "on" another device, this may be directly on the other device, but may also be accompanied by other devices therebetween. When a device is said to be "directly on" another device in contrast, there is no other device in between.

Although the terms first, second, etc. may be used herein to connote various elements in some instances, the elements should not be limited by the terms. These terms are only used to distinguish one element from another element. For example, a first interface, a second interface, etc. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups. The terms "or" and/or "as used herein are to be construed as inclusive, or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; A. b and C). An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the language clearly indicates the contrary. The meaning of "comprising" in the specification is to specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but does not preclude the presence or addition of other features, regions, integers, steps, operations, elements, and/or components.

Although not differently defined, including technical and scientific terms used herein, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The term addition defined in the commonly used dictionary is interpreted as having a meaning conforming to the contents of the related art document and the current hint, so long as no definition is made, it is not interpreted as an ideal or very formulaic meaning too much.

FIG. 1 is a cross-sectional view of a horizontal scroll compressor having an auxiliary bearing oil supply assembly of the present utility model.

Fig. 2 is a cross-sectional view taken along A-A in fig. 1. Fig. 3 is a cross-sectional view of fig. 2 without the oil suction pipe assembled.

Fig. 4 is a schematic view of an oil suction pipe in the sub-bearing oil supply unit of the present utility model. Fig. 5 is a side view of a rear housing in the sub-bearing oil supply assembly of the present utility model. The auxiliary bearing oil supply assembly of the present utility model includes: a rear shell 2, a secondary bearing housing 1 and an oil suction pipe 3. The rear shell 2 is provided with an oil pool. The auxiliary bearing seat 1 is arranged on the rear shell 2 and supports the crankshaft 7 to rotate, and the auxiliary bearing seat 1 is provided with an oil supply through hole 13 along the radial direction. The oil suction pipe 3 is arranged on the rear shell 2, one end of the oil suction pipe 3 is communicated with the oil supply through hole 13, the other end of the oil suction pipe is immersed in the oil pool, and negative pressure is formed inside the auxiliary bearing seat 1 along with rotation of the crankshaft 7 so as to suck lubricating oil in the oil pool through the oil suction pipe 3. In order to reliably and stably supply oil and lubricate the auxiliary bearing, the side surface of the auxiliary bearing seat is provided with a section of bent pipe, one end of the bent pipe is inserted into a hole on the side surface, and the other end of the bent pipe is positioned at the bottom of the compressor and is immersed below the oil surface, so that a reliable oil supply structure system can be formed.

In a preferred embodiment, the oil suction pipe 3 includes a curved portion 31 and a vertical portion 32, wherein an upper end of the curved portion 31 is communicated with the oil supply through hole 13, a lower end of the curved portion 31 is communicated with an upper end of the vertical portion 32, and a lower end of the vertical portion 32 is immersed in the oil pool, but not limited thereto.

In a preferred embodiment, the oil suction pipe 3 includes a suction pipe 33 immersed in the oil sump and an elastic pipe 6 hermetically sleeved on the suction pipe 33 and bent to communicate with the oil supply through hole 13, but not limited thereto.

In a preferred embodiment, a filter screen is disposed in the suction tube 33, but not limited thereto.

In a preferred embodiment, the partial elastic tube 6 of the sealing sleeve suction tube 33 forms a vertical portion 32, and the remaining partial elastic tube 6 forms a curved portion 31, but not limited thereto.

In a preferred embodiment, the rear shell 2 is provided with two screw sockets, and a gap for limiting the oil suction pipe 3 is formed between the screw sockets, but not limited to the screw sockets.

In a preferred embodiment, the oil suction pipe 3 is embedded in the slit, and the screw bases are respectively screwed with the same gasket 5 to cover the slit, but not limited to the slit.

In a preferred embodiment, the opening direction of the oil supply through hole 13 is perpendicular to the extending direction of the vertical portion 32, but not limited thereto.

According to the utility model, a side surface of a bearing pedestal 1 of an auxiliary bearing is arranged on a rear shell 2, a section of oil suction pipe 3 is arranged, one end of the oil suction pipe 3 is sleeved with a section of elastic pipe 6 in an inserted manner into a small hole on the side surface, the other end of the oil suction pipe is immersed below the oil surface, and an elbow pipe is fixedly arranged through a gasket 5 and a bolt 4. During operation of the compressor, as the crankshaft 7 axially rotates, negative pressure is formed at the center of the auxiliary bearing 1, and refrigerating machine oil is sucked into the bearing seat provided with the auxiliary bearing 1 through the oil suction pipe 3, so that reliable and stable oil supply is provided for the auxiliary bearing 1, and the reliability of the compressor is ensured. One end of the oil suction pipe is always positioned at the lowest position of the compressor, so that the refrigerating machine oil can be sucked. The radial position of the bearing seat at one end of the oil suction pipe can ensure that the refrigerating machine oil is injected into the auxiliary bearing, thereby achieving the lubricating effect. Wherein, inhale oil pipe simple structure, simple to operate need not to increase the quantity of fuel filling and increase the installation space of compressor

The present utility model also provides a horizontal scroll compressor comprising: the main bearing 8, the motor 9, the scroll 10 and one of the auxiliary bearing oil supply units are arranged in an orientation range defined by a pipeline of the air suction port 12 of the rear shell 2 of the horizontal scroll compressor, but the oil supply through hole 13 is not limited to the orientation range. Other related technical features are as described above and will not be described here again.

In summary, the auxiliary bearing oil supply assembly and the horizontal scroll compressor can adopt the differential pressure oil suction pipe to supply oil for the auxiliary bearing, so that enough lubricating oil is ensured to be provided for lubricating each friction pair in the compressor system, and the efficiency and the service life of the compressor are improved.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. A secondary bearing oil supply assembly comprising:

a rear shell (2); an oil pool is arranged in the rear shell (2);

the auxiliary bearing pedestal (1) is arranged on the rear shell (2) and supports the crankshaft (7) to rotate, and the auxiliary bearing pedestal (1) is provided with an oil supply through hole (13) along the radial direction;

the oil suction pipe (3) is arranged on the rear shell (2), one end of the oil suction pipe (3) is communicated with the oil supply through hole (13), the other end of the oil suction pipe is immersed in the oil pool, and negative pressure is formed inside the auxiliary bearing seat (1) along with the rotation of the crankshaft (7) so as to suck lubricating oil in the oil pool through the oil suction pipe (3).

2. A sub-bearing oil supply unit as claimed in claim 1, wherein said oil suction pipe (3) includes a bent portion (31) and a vertical portion (32), an upper end of said bent portion (31) communicates with said oil supply through hole (13), a lower end of said bent portion (31) communicates with an upper end of said vertical portion (32), and a lower end of said vertical portion (32) is immersed in said oil pool.

3. A secondary bearing oil supply assembly according to claim 2, characterized in that the oil suction pipe (3) comprises a suction pipe (33) immersed in the oil sump and an elastic pipe (6) sealingly engaging the suction pipe (33) and bending the oil supply through hole (13).

4. A secondary bearing oil supply assembly as claimed in claim 3, characterised in that a filter screen is provided in the suction pipe (33).

5. A secondary bearing oil supply assembly as claimed in claim 3, wherein a partial elastic tube (6) sealingly engaging the suction tube (33) forms the vertical portion (32), and the remaining partial elastic tube (6) forms the curved portion (31).

6. A secondary bearing oil supply assembly as claimed in claim 1, characterized in that the rear housing (2) is provided with two screw seats, between which a nip is formed which limits the oil suction pipe (3).

7. A secondary bearing oil supply assembly as claimed in claim 6, wherein the oil suction pipe (3) is embedded in the slit, and the screw seats are respectively screwed with the same gasket (5) to cover the slit.

8. A sub-bearing oil supply assembly as claimed in claim 2, wherein the opening direction of the oil supply through hole (13) is perpendicular to the extending direction of the perpendicular portion (32).

9. A horizontal scroll compressor, comprising: a sub-bearing oil supply assembly as claimed in any one of claims 1 to 8.

10. A horizontal scroll compressor according to claim 9, wherein the oil supply through hole (13) is located within an orientation range defined by a duct of the suction port (12) of the rear casing (2) of the horizontal scroll compressor.

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