CN108343608A

CN108343608A - Compressor

Info

Publication number: CN108343608A
Application number: CN201810383037.5A
Authority: CN
Inventors: 黎法运
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Welling Auto Parts Co Ltd
Priority date: 2018-04-26
Filing date: 2018-04-26
Publication date: 2018-07-31

Abstract

The invention discloses a kind of compressor, the compressor includes：Compressor housing and the pump housing, the pump housing is arranged in compression case body, and the pump housing includes：Bent axle, eccentric cylinder, first component and second component, first component and second component are separately positioned on the both sides of eccentric cylinder, bent axle wears first component, eccentric cylinder and second component, eccentric cylinder has slide plate component slot, and the geometric center of each in eccentric cylinder, first component and second component is towards the central axis for deviateing bent axle close to the direction of slide plate component slot.The reliability of compressor can be improved, it can be achieved that the maximization of compressor displacement and the maximization of space availability ratio in compressor according to the present invention.

Description

Compressor with a compressor housing having a plurality of compressor blades

Technical Field

The invention relates to the field of general machinery, in particular to a compressor.

Background

The conventional rotary compressor has the same geometric center of a bearing, a partition plate and a cylinder as the center of a crankshaft and a shell in a common pump body, so that the processing and the manufacturing of the cylinder, the bearing and the partition plate are convenient, and the assembly of the bearing, the cylinder and the shell is also convenient; but this structure has restricted the cylinder and has been located the thickness of slide groove position (promptly slide groove department excircle can't be done greatly), causes that cylinder bore diameter can't be done greatly under the same jar height, and bent axle eccentric quantity can't be done greatly, does greatly to cause the gleitbretter to stretch out the rate too big, and compressor reliability receives the influence.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, the present invention proposes a compressor that can achieve maximization of compressor displacement and maximization of space utilization.

The compressor according to the embodiment of the present invention includes: compressor housing and pump body, the pump body sets up in the compressor housing, just the pump body includes: the crankshaft is arranged on two sides of the eccentric cylinder respectively, the first member, the eccentric cylinder and the second member are arranged in the crankshaft in a penetrating mode, the eccentric cylinder is provided with a sliding vane assembly groove, and the geometric center of each of the eccentric cylinder, the first member and the second member deviates from the central axis of the crankshaft towards the direction close to the sliding vane assembly groove.

According to the compressor, the geometric centers of the eccentric cylinder and the first member and the second member which are arranged on the two sides of the eccentric cylinder deviate from the central axis of the crankshaft towards the direction of the slide piece assembly groove, so that the discharge capacity can be increased on the basis of not changing the cylinder height, and the eccentric amount of the crankshaft is increased, so that the problems of too short slide piece and insufficient slide piece extension rate are avoided.

According to the compressor provided by the embodiment of the invention, the pump body is a single-cylinder pump body, the first component is a main bearing, and the second component is a secondary bearing.

According to one embodiment of the invention, the pump body is a double-cylinder pump body and comprises: the main bearing and the main partition plate are respectively arranged on two sides of the first cylinder, the auxiliary partition plate and the auxiliary bearing are respectively arranged on two sides of the second cylinder, and the main partition plate is attached to the auxiliary partition plate; wherein the first cylinder is configured as the eccentric cylinder, the first member is the main bearing, and the second member is the main diaphragm; and/or the second cylinder is configured as the eccentric cylinder, the first member is the secondary bearing, and the second member is the secondary diaphragm.

According to the compressor of one embodiment of the present invention, the outer circumferential surface of each of the first member and the second member is an outer circumferential surface which is in close sealing contact with the inner wall surface of the housing, so that an independent discharge chamber is formed between the first member, the second member, the outer circumferential surface of the eccentric cylinder, and the inner wall surface of the housing.

Further, a seal is provided between each of the first member and the second member and an inner wall surface of the housing.

Optionally, an annular sealing groove is formed in the outer circular surface, and the sealing element is arranged in the sealing groove.

According to the compressor of one embodiment of the present invention, a straight line defined by the geometric center of each of the eccentric cylinder, the first member, and the second member is parallel to the central axis of the crankshaft.

According to the compressor of one embodiment of the present invention, the geometric center of each of the eccentric cylinder, the first member, and the second member is located in a plane defined by the center axis of the crankshaft and the center line of the vane assembly groove.

According to the compressor of one embodiment of the present invention, the eccentric cylinder is "Q" shaped and includes a cylinder body and a thickened portion which is protrudingly provided on an outer circumferential surface of the cylinder body, the eccentric cylinder has a slide piece assembly groove, a part of which is opened on the cylinder body and another part of which is opened on the thickened portion.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a main separator according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the main separator plate of FIG. 1;

FIG. 3 is a schematic structural view of a main bearing according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of the main bearing of FIG. 3;

FIG. 5 is a schematic structural view of a pump body according to an embodiment of the invention;

FIG. 6 is a schematic view of the assembly of the pump body within the compressor housing according to an embodiment of the present invention.

Reference numerals:

the compressor comprises a compressor 100, a compressor shell 1, a high-pressure shell 11, a low-pressure shell 12, a high-pressure and low-pressure partition plate 13, a pump body 2, a crankshaft 21, a main bearing 22, a body part 221, a flange part 222, a second sealing groove 2221, a second threaded mounting hole 2222, a first cylinder 23, a sliding vane component groove 231, a main partition plate 24, a first sealing groove 241, a first threaded mounting hole 242, an exhaust hole 243, an auxiliary partition plate 25, a second cylinder 26, an auxiliary bearing 27, a driving motor 3 and an end cover 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A compressor 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 6. The compressor 100 according to the embodiment of the present invention may be a rotary compressor 100, and the rotary compressor 100 directly drives a rotary piston to rotate, so as to complete compression of refrigerant vapor.

As shown in fig. 1 to 6, a compressor 100 according to an embodiment of the present invention includes: a compressor housing 1 and a pump body 2. As shown in fig. 6, the pump body 2 is disposed inside the compressor housing 1, and the pump body 2 may include: a crankshaft 21, an eccentric cylinder (e.g., the first cylinder 23 of the embodiment of fig. 5, 6), a first member (e.g., the main bearing 22 of the embodiment of fig. 5, 6), and a second member (e.g., the main diaphragm 24 of the embodiment of fig. 5, 6).

The first member and the second member are respectively disposed at both sides of the eccentric cylinder to form an independent compression working chamber with the eccentric cylinder, the crankshaft 21 may be sequentially penetrated by the first member, the eccentric cylinder and the second member, the eccentric cylinder has a vane assembly groove 231, specifically, the eccentric cylinder may be "Q" shaped and include a cylinder body and a thickened portion which is protrusively disposed on an outer circumferential surface of the cylinder body and is smoothly transitionally connected with the cylinder body, further, the eccentric cylinder may have a vane assembly groove 231, a part of the vane assembly groove 231 is disposed on the cylinder body and another part is disposed on the thickened portion, and the vane assembly groove 231 disposed on the cylinder body is communicated with the vane assembly groove 231 disposed on the thickened portion, further, the vane assembly (not shown) may include a vane and a return spring, one end of the vane abuts against an outer circumferential surface of the crankshaft 21, the other end is connected with a return spring.

Alternatively, the slide assembly slot 231 may include two sections, one section is disposed on the thickened portion, the other section is disposed on the cylinder body, the width of the slide assembly slot 231 disposed on the thickened portion may be greater than the width of the slide assembly slot 231 disposed on the cylinder body, the return spring is disposed in the slide assembly slot 231 with the greater width, and the slide is disposed in the slide assembly slot 231 with the smaller width, so that the layout of the eccentric cylinder may be compact and the layout may be reasonable.

As shown in fig. 5 and 6, the geometric center of each of the eccentric cylinder, the first member and the second member is offset from the central axis of the crankshaft 21 in a direction close to the vane assembly groove 231, that is, the geometric centers of the eccentric cylinder, the first member and the second member are not concentric with the axial center of the crankshaft 21, and the geometric centers of the eccentric cylinder, the first member and the second member are offset in a direction having the vane assembly groove 231, thereby facilitating the realization of a large displacement or large torque design of the compressor 100.

According to the compressor 100 of the embodiment of the invention, the geometric centers of the eccentric cylinder and the first member and the second member arranged at the two sides of the eccentric cylinder are deviated from the central axis of the crankshaft 21 towards the direction of the slide piece assembly groove 231, so that the displacement can be increased on the basis of not changing the cylinder height, and the eccentricity of the crankshaft 21 is increased without causing the problems of too short slide piece and insufficient slide piece extension rate.

Further, a straight line defined by the geometric center of each of the eccentric cylinder, the first member and the second member is parallel to the central axis of the crankshaft 21, and optionally, the geometric center of each of the eccentric cylinder, the first member and the second member is in a plane defined by the central axis of the crankshaft 21 and the central line of the vane member groove 231, so that a large displacement or torque design of the compressor 100 can be realized, and the compressor 100 is compact in structure and high in space utilization rate.

According to an embodiment of the present invention, the pump body 2 may be a single cylinder pump body 2, the first member is the main bearing 22, and the second member is the secondary bearing 27, that is, the main bearing 22 and the secondary bearing 27 are respectively disposed at two sides of the eccentric cylinder, thereby forming a single compression working chamber, the crankshaft 21 may sequentially penetrate the main bearing 22, the eccentric cylinder and the secondary bearing 27, and the main bearing 22 and the secondary bearing 27 may function to support the crankshaft 21.

In other embodiments of the present invention, the pump body 2 may be a double cylinder pump body 2 and may include: the main bearing 22, first cylinder 23, auxiliary bearing 27, second cylinder 26 and intermediate spacer subassembly, the intermediate spacer subassembly includes main baffle 24 and vice baffle 25, main bearing 22 and main baffle 24 set up respectively in the both sides of first cylinder 23, vice baffle 25 and vice bearing 27 set up respectively in the both sides of second cylinder 26, main baffle 24 and the laminating of vice baffle 25, therefore, main bearing 22, first cylinder 23 and main baffle 24 constitute an independent compression working chamber, auxiliary bearing 27, second cylinder 26 and vice baffle 25 also constitute an independent compression working chamber, thereby make the pump body 2 have two independent compression working chambers, and then be favorable to improving the discharge capacity of compressor 100, improve the operational reliability of compressor 100.

Alternatively, the first cylinder 23 may be configured as a cam cylinder, the first member as the main bearing 22, the second member as the main diaphragm 24 or the second cylinder 26 may be configured as a cam cylinder, the first member as the sub bearing 27, the second member as the sub diaphragm 25, or the first cylinder 23 may be configured as an eccentric cylinder, the first member being the main bearing 22, the second member being the main diaphragm 24, while the second cylinder 26 may be configured as an eccentric cylinder, the first member being the sub-bearing 27 and the second member being the sub-diaphragm 25, that is, at least one of the first cylinder 23 and the second cylinder 26 is configured as an eccentric cylinder, and accordingly, the geometric centers of the first and second members adjacent thereto are also biased to the side where the slide assembly slot 231 is located, thus, under the condition of meeting the structural design requirement of the multistage compressor 100, the maximization of the displacement of the compressor 100 and the maximization of the space utilization rate can be realized.

Alternatively, the outer circumferential surface of each of the first member and the second member is an outer circumferential surface, and taking the first member as the main bearing 22 and the second member as the main partition plate 24 as an example, as shown in fig. 6, the outer circumferential surface may be in close contact with the inner wall surface of the casing for sealing, so as to form an independent exhaust cavity between the outer circumferential surfaces of the first member, the second member, the eccentric cylinder and the inner wall surface of the casing, thereby meeting the structural design requirement of the multistage compressor 100.

Further, a sealing member may be further disposed between each of the first member and the second member and the inner wall surface of the casing, specifically, as shown in fig. 1 and 2, the main partition 24 is configured in a disc shape, and an annular first sealing groove 241 may be disposed on an outer circumferential surface of the main partition 24, and the sealing member may be disposed in the first sealing groove 241, as shown in fig. 3 and 4, the main bearing 22 may include a body portion 221 and a flange portion 222, and an annular second sealing groove 2221 may be disposed on an outer circumferential surface of the flange portion 222, and the sealing member may be disposed in the second sealing groove 2221, so that by disposing the sealing member, sealing between the outer circumferential surfaces of the first member and the second member and the inner wall surface of the casing may be effectively achieved, sealing performance of the discharge chamber may be ensured, and operation reliability of the compressor 100 may be improved.

As shown in fig. 1 and 3, the main partition 24 may be provided with a first threaded mounting hole 242, the first threaded mounting hole 242 may be plural, the plural first threaded mounting holes 242 may be spaced around the center of the main partition 24, the main bearing 22 may be provided with a second threaded mounting hole 2222, the plural second threaded mounting holes 2222 may be spaced on the flange portion 222, and the plural second threaded mounting holes 2222 and the plural first threaded mounting holes 242 correspond to each other, so that a threaded fastener, such as a bolt, may pass through the second threaded mounting hole 2222 on the main bearing 22 and be fixed to the first threaded mounting hole 242 of the main partition 24, thereby fixing the main bearing 22 and the main partition 24, and the connection is convenient and reliable.

Meanwhile, as shown in fig. 5 and 6, the main partition 24 may be provided with an exhaust hole 243, and the compressed medium in the first cylinder 23 may be exhausted to the second cylinder 26 through the exhaust hole 243 and then exhausted from the compressor housing 1, but of course, the compressed medium in the first cylinder 23 may also be exhausted from the compressor housing 1 through a separate pipe.

Alternatively, the compressor housing 1 of the embodiment of the present invention may include: the high-pressure shell 11 and the low-pressure shell 12, the high-pressure shell 11 and the low-pressure shell 12 may be separated by a high-low pressure partition plate 13, the body 221 of the main bearing 22 may penetrate through the high-low pressure partition plate 13, the crankshaft 21 penetrates through the main bearing 22, and one end of the crankshaft 21 extends into the low-pressure shell 12 and is connected to the driving motor 3 in the low-pressure shell 12, so that the driving motor 3 may drive the crankshaft 21 to move, and further drive the piston to make a rotational motion, so as to complete the compression of the refrigerant vapor.

Further, as shown in fig. 6, the other end of the crankshaft 21 is sequentially inserted into the first cylinder 23, the main partition 24, the sub-partition 25, the second cylinder 26 and the sub-bearing 27, and then works in the multi-stage compression working chamber, and at the same time, the outer ends of the high pressure housing 11 and the low pressure housing 12 may be closed by the end cap 4, so that leakage of the lubricating oil may be prevented, and external dust, impurities, etc. may be prevented from entering the interior of the compressor housing 1 to affect the normal operation of the compressor 100.

In summary, according to the compressor 100 of the embodiment of the present invention, the geometric centers of the eccentric cylinder, the first member and the second member are offset from the axial center of the crankshaft 21 in the direction close to the slide assembly slot 231, so that the displacement of the compressor 100 and the space utilization rate can be maximized, the operational reliability of the compressor 100 can be improved, and the compressor 100 is compact in structure and reasonable in layout.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A compressor, comprising: compressor housing and pump body, the pump body sets up in the compressor housing, just the pump body includes: the crankshaft is arranged on two sides of the eccentric cylinder respectively, the first member, the eccentric cylinder and the second member are arranged in the crankshaft in a penetrating mode, the eccentric cylinder is provided with a sliding vane assembly groove, and the geometric center of each of the eccentric cylinder, the first member and the second member deviates from the central axis of the crankshaft towards the direction close to the sliding vane assembly groove.

2. The compressor of claim 1, wherein the pump body is a single cylinder pump body, the first member is a primary bearing, and the second member is a secondary bearing.

3. The compressor of claim 1, wherein the pump body is a dual cylinder pump body and comprises: the main bearing and the main partition plate are respectively arranged on two sides of the first cylinder, the auxiliary partition plate and the auxiliary bearing are respectively arranged on two sides of the second cylinder, and the main partition plate is attached to the auxiliary partition plate;

wherein,

the first cylinder is configured as the eccentric cylinder, the first member is the main bearing, and the second member is the main diaphragm; and/or

The second cylinder is configured as the eccentric cylinder, the first member is the sub-bearing, and the second member is the sub-diaphragm.

4. The compressor of claim 1, wherein an outer circumferential surface of each of the first member and the second member is an outer circumferential surface that is in close sealing contact with an inner wall surface of the housing, thereby forming independent discharge chambers between the first member, the second member, the outer circumferential surface of the eccentric cylinder, and the inner wall surface of the housing.

5. The compressor of claim 4, wherein a seal is further provided between each of the first and second members and an inner wall surface of the housing.

6. The compressor of claim 5, wherein an annular seal groove is disposed on the outer circumferential surface, the seal being disposed within the seal groove.

7. The compressor of claim 1, wherein a line defined by a geometric center of each of the eccentric cylinder, the first member, and the second member is parallel to a central axis of the crankshaft.

8. The compressor of claim 1, wherein a geometric center of each of the eccentric cylinder, the first member, and the second member is in a plane defined by a center axis of the crankshaft and a centerline of the vane assembly slot.

9. The compressor according to claim 1, wherein the eccentric cylinder includes a cylinder body and a thickened portion which is protrudingly provided on an outer peripheral surface of the cylinder body, the eccentric cylinder having a vane assembly groove, a part of which is opened on the cylinder body and the other part of which is opened on the thickened portion.