CN211950847U

CN211950847U - Horizontal scroll compressor

Info

Publication number: CN211950847U
Application number: CN202020250796.7U
Authority: CN
Inventors: 吴凌云; 黄幼玲
Original assignee: Emerson Climate Technologies Suzhou Co Ltd
Current assignee: Copeland Suzhou Co Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-11-17
Anticipated expiration: 2030-03-03
Also published as: WO2021174792A1

Abstract

The utility model provides a horizontal scroll compressor, include: the fixed scroll component comprises a fixed scroll end plate, a spiral blade formed on one side of the fixed scroll end plate and a concave part formed on the other side of the fixed scroll end plate, and a sealing assembly is arranged in the concave part to form a back pressure cavity; the scroll compressor comprises an orbiting scroll component and a fixed scroll component, wherein the orbiting scroll component comprises an orbiting scroll end plate, a hub part formed on one side of the orbiting scroll end plate and a spiral blade formed on the other side of the orbiting scroll end plate, and the blades of the fixed scroll component and the orbiting scroll component are mutually jointed in the axial direction to form a series of compression cavities for compressing working fluid; and a communication passage provided in the non-orbiting scroll end plate, the back pressure chamber communicating with the at least one compression chamber via the communication passage, the communication passage having an inlet communicating with the at least one compression chamber and an outlet communicating with the back pressure chamber, the outlet being lower than the inlet in a vertical direction.

Description

Horizontal scroll compressor

Technical Field

The utility model relates to a horizontal scroll compressor.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

Horizontal scroll compressors are typically used in mobile or stationary air conditioners, heat pumps and refrigerators. One type of horizontal scroll compressor that is commonly used is a floating fixed scroll compressor, which achieves floating sealing of the fixed scroll member through a back pressure chamber. Wherein the working fluid of the intermediate pressure chamber enters the back pressure chamber through the drainage channel to provide the axial sealing force of the non-orbiting scroll member. And the working fluid can drive part of lubricating oil between the fixed scroll part and the movable scroll part to enter the back pressure cavity from the middle pressure cavity through the drainage channel. Generally, in a floating fixed scroll type scroll compressor, the inlet and outlet of the pilot passage are made equal in height, which causes the lubricant oil introduced through the pilot passage to accumulate at the bottom of the back pressure chamber.

Therefore, a horizontal scroll compressor capable of avoiding accumulation of lubricating oil at the bottom of the back pressure chamber is required.

SUMMERY OF THE UTILITY MODEL

It is an object of one or more embodiments of the present invention to provide a horizontal scroll compressor capable of preventing the accumulation of lubricating oil in the bottom of a back pressure chamber.

According to the utility model discloses an aspect provides a horizontal scroll compressor, horizontal scroll compressor includes: a non-orbiting scroll member including a non-orbiting scroll end plate, a spiral vane formed at one side of the non-orbiting scroll end plate, and a recess formed at the other side of the non-orbiting scroll end plate, a seal assembly being provided in the recess to form a back pressure chamber; an orbiting scroll member including an orbiting scroll end plate, a hub formed at one side of the orbiting scroll end plate, and a spiral vane formed at the other side of the orbiting scroll end plate, wherein the vane of the non-orbiting scroll member and the vane of the orbiting scroll member are engaged with each other in an axial direction to form a series of compression chambers compressing a working fluid; a communication passage provided in the non-orbiting scroll end plate, the back pressure chamber communicating with at least one of the compression chambers via the communication passage, the communication passage having an inlet communicating with at least one of the compression chambers and an outlet communicating with the back pressure chamber, the outlet being lower than the inlet in a vertical direction. Since the outlet of the passage is lower than the inlet in the vertical direction, the working fluid introduced through the passage easily blows off and carries away the lubricating oil deposited at the bottom of the back pressure chamber, thereby preventing the deposition of the lubricating oil at the bottom of the back pressure chamber and improving the reliability of the compressor.

Preferably, at least one of said compression chambers comprises an intermediate pressure chamber, said inlet communicating with said intermediate pressure chamber.

Preferably, the outlet of the passage is located at a vertically lowest position adjacent to the inner peripheral surface of the back pressure chamber.

Preferably, the communication channel comprises an inclined channel section extending linearly towards the back pressure chamber.

Preferably, the communication channel comprises at least two linearly extending channel sections, wherein two adjacent channel sections have different slopes.

Preferably, the non-orbiting scroll end plate is formed of a single piece; the communication channel comprises a first channel section, a second channel section and a third channel section which are sequentially communicated from the inlet to the outlet, wherein the second channel section vertically extends to the outer peripheral surface of the fixed scroll end plate, and a plug is arranged in a part, close to the outer peripheral surface, of the second channel section.

Preferably, the fixed scroll end plate is composed of a cover plate and a main body end plate, a sealing layer is arranged between the cover plate and the main body end plate, and one side of the cover plate is provided with the concave part; the communication channel comprises a first channel section, a second channel section and a third channel section which are communicated in sequence from the inlet to the outlet, wherein the second channel section extends in the sealing layer. Thereby facilitating the manufacture of the channel.

Preferably, the first channel section and the third channel section extend in a horizontal direction.

Preferably, the first channel section extends in a horizontal direction and the third channel section extends obliquely towards the back pressure chamber.

Preferably, a chamfer that guides the working fluid toward a position where an inner peripheral surface of the back pressure chamber is lowest in a vertical direction is formed at the outlet.

Drawings

Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which like features or components are designated by like reference numerals and which are not necessarily drawn to scale, and in which:

fig. 1 shows a cross-sectional view of a horizontal scroll compressor according to a first embodiment of the present invention.

Fig. 2 shows a partially enlarged view of the horizontal scroll compressor of fig. 1.

Figure 3 shows a cross-sectional view of a non-orbiting scroll member according to a second embodiment of the present invention.

Figure 4 illustrates a cross-sectional view of a non-orbiting scroll member according to a third embodiment of the present invention.

Figure 5 shows a cross-sectional view of a non-orbiting scroll member according to a fourth embodiment of the present invention.

Figure 6 illustrates a cross-sectional view of a non-orbiting scroll member in accordance with a fifth embodiment of the present invention.

Figure 7 illustrates a cross-sectional view of a non-orbiting scroll member according to a sixth embodiment of the present invention.

Fig. 8 shows a cross-sectional view of a horizontal scroll compressor according to a comparative example of the present invention.

Fig. 9 shows a partially enlarged view of the horizontal scroll compressor of fig. 8.

Detailed Description

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, like reference numerals indicate like or similar parts and features. The drawings are only schematic representations, not necessarily showing specific dimensions and proportions, of the various embodiments of the invention, the relative details or construction of the various embodiments of the invention may be illustrated in exaggerated form in particular drawings or portions thereof.

The term "vertical direction" referred to herein means a direction perpendicular to the horizontal plane. The term "tilt" referred to herein refers to a direction that is at an angle relative to the vertical. The term "the outlet is vertically lower than the inlet" referred to herein means that the lowest position of the outlet is vertically lower than the lowest position of the inlet. The term "back pressure chamber bottom" referred to herein means a portion where the inner peripheral surface of the back pressure chamber is lowest in the vertical direction.

Fig. 1 shows a cross-sectional view of a horizontal scroll compressor according to a first embodiment of the present invention. As shown in FIG. 1, a horizontal scroll compressor 100 (hereinafter sometimes referred to as a compressor) generally includes a housing 110. The casing 110 may include a substantially cylindrical body 111, a left end cover 112 disposed at one end of the body 111, a right end cover 114 disposed at the other end of the body 111, and a partition plate 116 disposed between the left end cover 112 and the body 111 to partition an inner space of the casing of the compressor into a high pressure side and a low pressure side. The space between the partition plate 116 and the left end cover 112 constitutes a high pressure side, and the space between the partition plate 116, the body 111, and the right end cover 114 constitutes a low pressure side. A motor 120 is provided in the housing 110, and a drive shaft 130 is provided in the motor 120 to drive a compression mechanism constituted by a non-orbiting scroll member 150 and an orbiting scroll member 160. Orbiting scroll member 160 includes an orbiting scroll end plate 164, a hub 162 formed on one side of orbiting scroll end plate 164, and a spiral vane 166 formed on the other side of orbiting scroll end plate 164. Non-orbiting scroll member 150 includes a non-orbiting scroll end plate 154, a spiral vane 156 formed on one side of non-orbiting scroll end plate 154, and a recess 158 formed on the other side of non-orbiting scroll end plate 154. An exhaust port 153 is formed at a substantially central position of the non-orbiting scroll end plate 154. A series of compression chambers C1, C2, and C3 for compressing the working fluid are formed between

helical vanes

156, 166 of non-orbiting scroll member 150 and orbiting scroll member 160. The radially outermost compression pocket C3 is at suction pressure and the radially innermost compression pocket C1 is at discharge pressure. The intermediate compression chamber C2 is between the suction pressure and the discharge pressure and is also referred to as an intermediate pressure chamber. By being driven by motor 120, orbiting scroll member 160 will be rotated in translation relative to non-orbiting scroll member 150 (i.e., the central axis of orbiting scroll member 160 rotates about the central axis of non-orbiting scroll member 150, but orbiting scroll member 160 does not itself rotate about its central axis) to effect compression of a lubricating oil-containing working fluid (hereinafter referred to simply as "working fluid"). The working fluid compressed by the non-orbiting scroll part 150 and the orbiting scroll part 160 is discharged to a high pressure side through the discharge port 153. A seal assembly S is disposed in the recess 158 of the non-orbiting scroll member 150 to form a back pressure chamber BC that provides back pressure to the orbiting scroll member 150. The back pressure chamber BC is in fluid communication with one of a series of compression chambers C1, C2, C3 via a communication passage 170 formed in the non-orbiting scroll end plate 154 to introduce the working fluid therein into the back pressure chamber BC. Preferably, the recess 158 is in fluid communication with the intermediate compression chamber C2 via the communication passage 170 described above.

Fig. 2 shows a partially enlarged view of the horizontal scroll compressor of fig. 1. As shown in fig. 2, the communication passage 170 has an inlet 174 and an outlet 175. The inlet 174 of the communication passage 170 communicates with the compression chamber C2, the outlet 175 of the communication passage 170 communicates with the back pressure chamber BC, and the outlet 175 is vertically lower than the inlet 174, so that the working fluid of the middle pressure chamber is blown into the back pressure chamber BC toward the bottom of the back pressure chamber BC via the communication passage 170. In the example of fig. 2, the communication channel 170 includes a first channel section 171, a second channel section 172, and a third channel section 173. Wherein the first channel section 171 extends horizontally from the inlet 174 and communicates with the second channel section 172. The second channel section 172 extends vertically. For ease of manufacturing, in the illustrated example, the second channel section 172 extends to the outer peripheral surface of the non-orbiting scroll end plate 154, and a plug 176 is provided in the second channel section 172 near the outer peripheral surface of the non-orbiting scroll end plate 154 to prevent leakage of the working fluid. The third channel section 171 extends horizontally from the second channel section 172 to an outlet 175. Optionally, the first channel section 171 is angled to the second channel section 172 and the second channel section 172 is angled to the third channel section 173. Alternatively, a chamfer that guides the working fluid toward a position where the inner peripheral surface of the back pressure chamber BC is lowest in the vertical direction is formed at the outlet 175.

Fig. 8 shows a cross-sectional view of a horizontal scroll compressor according to a comparative example of the present invention. Fig. 9 shows a partial enlarged view of the horizontal scroll compressor 100' of fig. 8. As can be seen from fig. 8 and 9, the inlet 174 'of the communication passage 170' communicates with the compression chamber C2, and the outlet 175 'of the communication passage 170' communicates with the back pressure chamber BC. The back pressure chamber BC ' includes a first recess 158 ' and a second recess 159 '. The communication channel 170 ' extends horizontally from the inlet 174 ' to the outlet 175 ', the inlet 174 ' being at the same height as the outlet 175 '. The configuration of the communication passage 170 ' causes the lubricating oil contained in the working fluid blown along the communication passage 170 ' to accumulate at the bottom of the back pressure chamber BC '. Since the lubricating oil is accumulated at the bottom of the back pressure chamber BC' and cannot be returned to the oil sump, the oil circulation rate is reduced and thus the reliability of the compressor is lowered.

Compared with the comparative example shown in fig. 8 and 9, in the horizontal compressor 100 according to the first embodiment of the present invention, since the outlet 175 of the communication channel 170 is lower than the inlet 174 in the vertical direction, the working fluid introduced through the communication channel 170 easily blows off and carries the lubricating oil deposited at the bottom of the back pressure chamber BC away from the bottom of the back pressure chamber BC, thereby preventing the lubricating oil from being deposited at the bottom of the back pressure chamber BC, and improving the reliability of the compressor.

Figure 3 illustrates a cross-sectional view of a non-orbiting scroll member 250 according to a second embodiment of the present invention. In the second embodiment, the communication passage 270 has an inlet 274 communicating with the compression chamber C2 and an outlet 275 communicating with the back pressure chamber BC. Further, in the example of fig. 3, the communication passage 270 includes an inclined passage section 277 extending linearly toward the back pressure chamber BC such that the outlet 275 of the communication passage 270 is lower than the inlet 274 in the vertical direction. Preferably, the communication channel 270 is generally an inclined channel section 277 extending from the inlet 274 to the outlet 275. The communication channel 270 may also include other shaped channel sections in communication with the angled channel section 277. The other structure of non-orbiting scroll member 250 is the same as that of non-orbiting scroll member 150 in the first embodiment.

Figure 4 illustrates a cross-sectional view of a non-orbiting scroll member 350 according to a third embodiment of the present invention. Non-orbiting scroll member 350 is a split structure having a main body portion 352 and a cover plate 351. Body portion 352 includes a body portion end plate 3521. The non-orbiting scroll end plate 354 of the non-orbiting scroll member 350 is constituted by a body end plate 3521 and a cover plate 351 arranged in parallel.

A seal layer 355 is provided between the cover plate 351 and the body end plate 3521. Preferably, the sealing layer 355 is a gasket having sealing properties such as rubber, teflon, or the like. A back pressure chamber BC is formed in the cover plate 351. The inlet 374 of the communication passage 370 communicates with the compression chamber C2, the outlet 375 of the communication passage 370 communicates with the back pressure chamber BC, and the outlet 375 is vertically lower than the inlet 374. The communication passage 370 includes a first passage section 371, a second passage section 372, and a third passage section 373 that extend in this order from the compression chamber C2 to the back pressure chamber. Therein, the first channel section 371 extends horizontally from the inlet 374 in the body portion 352 and communicates with the second channel section 372. A second channel section 372 is provided extending vertically in the seal layer 355. The third channel section 373 communicates with the second channel section 372 in the cover plate 351 and extends horizontally up to the outlet 375.

In alternative embodiments, the second channel section 372 may also be provided in the cover plate 351 or in the body end plate 3521 of the body 352. The other structure of the non-orbiting scroll part 350 is the same as that of the non-orbiting scroll part 150 in the first embodiment.

Figure 5 shows a cross-sectional view of a non-orbiting scroll member according to a fourth embodiment of the present invention. Non-orbiting scroll member 450 is a split structure having a main body portion 452 and a cover plate 451. The body portion 452 includes a body portion end plate 4521. The non-orbiting scroll end plate 454 of the non-orbiting scroll part 450 is formed of a body end plate 4521 and a cover plate 451 arranged in parallel. A seal layer 455 is provided between the lid plate 451 and the body end plate 4521. Preferably, the sealing layer 455 is a gasket made of rubber, teflon, or the like having a sealing property. A back pressure chamber BC is formed in the cover plate 451. The inlet 474 of the communication passage 470 communicates with the compression chamber C2, the outlet 475 of the communication passage 470 communicates with the back pressure chamber BC, and the outlet 475 is vertically lower than the inlet 474. The communication passage 470 includes a first passage section 471, a second passage section 472, and a third passage section 473 extending in order from the compression chamber C2 to the back pressure chamber BC. Wherein the first channel section 471 extends horizontally from the inlet 474 in the body end plate 4521 and communicates with the second channel section 472. The second channel section 472 is arranged to extend vertically in the sealing layer 455. The third channel section 473 communicates with the second channel section 472 in the cover plate 451 and extends linearly towards the back pressure chamber BC up to the outlet 475. In alternative embodiments, the second channel section 472 may also be provided in the cover plate 451 or in the body end plate 4521 of the body 452. The other structure of the non-orbiting scroll part 450 is the same as that of the non-orbiting scroll part 150 in the first embodiment.

Figure 6 illustrates a cross-sectional view of a non-orbiting scroll member in accordance with a fifth embodiment of the present invention. The non-orbiting scroll member 550 is a split structure having a body portion 552 and a cover plate 551. The main body portion 552 includes a main body portion end plate 5521. A fixed scroll end plate 554 of the fixed scroll member 550 is constituted by a body end plate 5521 and a cover plate 551 arranged in parallel. A sealing layer 555 is provided between the lid plate 551 and the body end plate 5521. Preferably, the sealing layer 555 is a gasket having sealing performance, such as rubber, teflon, or the like. A back pressure chamber BC is formed in the cover plate 551. An inlet 574 of the communication passage 570 communicates with the compression chamber C2, an outlet 575 of the communication passage 570 communicates with the back pressure chamber BC, and the outlet 575 is lower than the inlet 574 in the vertical direction. The communication passage 570 is integrally an inclined-shaped passage extending linearly toward the back pressure chamber BC. The other structure of the non-orbiting scroll member 550 is the same as that of the non-orbiting scroll member 150 in the first embodiment.

Figure 7 illustrates a cross-sectional view of a non-orbiting scroll member in accordance with a sixth embodiment of the present invention. The structure of the communication passage 670 is the same as that of the communication passage 170 of the first embodiment, and the outlet 675 is located at a position where the inner peripheral surface adjacent to the back pressure chamber BC is lowest in the vertical direction. The other structure of non-orbiting scroll member 650 is the same as that of non-orbiting scroll member 150 in the first embodiment.

The utility model discloses still including the export that makes the passageway be less than the passageway of the other shapes of entry in vertical direction.

Although various embodiments of the present invention have been described in detail herein, it is to be understood that the invention is not limited to the precise embodiments herein described and illustrated, and that other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the invention. All such variations and modifications are intended to fall within the scope of the present invention. Moreover, all the components described herein may be replaced by other technically equivalent components.

Claims

1. A horizontal scroll compressor, comprising:

a non-orbiting scroll member including a non-orbiting scroll end plate, a spiral vane formed at one side of the non-orbiting scroll end plate, and a recess formed at the other side of the non-orbiting scroll end plate, a seal assembly being provided in the recess to form a back pressure chamber;

an orbiting scroll member including an orbiting scroll end plate, a hub formed at one side of the orbiting scroll end plate, and a spiral vane formed at the other side of the orbiting scroll end plate, wherein the vane of the non-orbiting scroll member and the vane of the orbiting scroll member are engaged with each other in an axial direction to form a series of compression chambers compressing a working fluid;

a communication passage provided in the non-orbiting scroll end plate, the back pressure chamber communicating with at least one of the compression chambers via the communication passage,

the communication passage has an inlet communicating with at least one of the compression chambers and an outlet communicating with the back pressure chamber, the outlet being vertically lower than the inlet.

2. The horizontal scroll compressor of claim 1, wherein at least one of the compression chambers comprises an intermediate pressure chamber, the inlet communicating with the intermediate pressure chamber.

3. The horizontal scroll compressor of claim 1, wherein an outlet of the passage is vertically lowest adjacent to an inner peripheral surface of the back pressure chamber.

4. The horizontal scroll compressor of any one of claims 1-3, wherein the communication channel comprises an inclined channel section extending linearly toward the back pressure chamber.

5. The horizontal scroll compressor of any one of claims 1-3, wherein the communication channel comprises at least two linearly extending channel segments, wherein adjacent two channel segments have different slopes.

6. The horizontal scroll compressor of claim 5,

the fixed scroll end plate is formed by an integrated piece;

the communication channel comprises a first channel section, a second channel section and a third channel section which are sequentially communicated from the inlet to the outlet, wherein the second channel section vertically extends to the outer peripheral surface of the fixed scroll end plate, and a plug is arranged in a part, close to the outer peripheral surface, of the second channel section.

7. The horizontal scroll compressor of claim 5,

the fixed scroll end plate consists of a cover plate and a main body end plate, a sealing layer is arranged between the cover plate and the main body end plate, and one side of the cover plate is provided with the concave part;

the communication channel comprises a first channel section, a second channel section and a third channel section which are communicated in sequence from the inlet to the outlet, wherein the second channel section extends in the sealing layer.

8. The horizontal scroll compressor of claim 6 or 7, wherein the first and third channel sections extend in a horizontal direction.

9. The horizontal scroll compressor of claim 6 or 7, wherein the first channel section extends in a horizontal direction and the third channel section extends obliquely toward the back pressure chamber.

10. The horizontal scroll compressor of claim 8, wherein a chamfer directing the working fluid toward a position where an inner peripheral surface of the back pressure chamber is lowest in a vertical direction is formed at the outlet.