CN210397113U

CN210397113U - Rotor type compressor and refrigeration cycle device

Info

Publication number: CN210397113U
Application number: CN201921382111.8U
Authority: CN
Inventors: 邓罡; 邹鹏; 魏会军; 吴健; 陈圣; 罗惠芳; 张心爱; 柯达俊; 巩庆霞
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-04-24
Anticipated expiration: 2029-08-23

Abstract

The utility model provides a rotor compressor and refrigeration cycle device, this compressor include casing subassembly, motor element and pump body subassembly, and pump body subassembly includes the oil-gas separation structure, and the oil-gas separation structure includes according to the order at least in proper order: the lower flange comprises an oil-gas separation element which is arranged in the cavity and is used for separating refrigeration oil in the refrigerant; a lower flange cover plate provided with an oil gathering hole and an oil guiding hole communicated with each other to guide the separated refrigeration oil; and the oil collecting plate is provided with an oil collecting groove and an oil leakage hole, the oil collecting groove is used for collecting the refrigerating oil from the oil collecting hole and the oil guide hole, and the oil leakage hole is used for discharging the refrigerating oil into the compressor shell. Through the first aspect, the pump body structure for reducing the oil circulation rate is adopted, so that the lubricating and sealing performance between moving parts of the pump body is ensured, the entering of the refrigerant oil into the system is reduced, the reliability of the compressor is improved, and the refrigerating capacity of the system is ensured.

Description

Rotor type compressor and refrigeration cycle device

Technical Field

The utility model relates to a compressor technical field to more specifically relates to a rolling rotor formula compressor and possess refrigeration cycle device of this compressor.

Background

The compressor plays a role of compressing a supplied refrigerant in an air conditioning system (refrigeration cycle device), and is called a "heart" of an air conditioner. A rolling rotor type compressor in the prior art includes a pump body assembly, a motor assembly, and a housing assembly.

In the prior art, a rolling rotor type medium back pressure carbon dioxide compressor is disclosed, which adopts a two-stage compression principle and is provided with two cylinders, wherein one cylinder is a first-stage compression cylinder, the other cylinder is a second-stage compression cylinder, a low-pressure-stage refrigerant firstly flows into the first-stage compression cylinder at the bottom of the compressor, is compressed to an intermediate pressure under the action of a compression structure, is directly discharged into a shell of the compressor to form a medium back pressure, then flows into a second-stage compression cavity at the upper part of the compressor after being cooled in an intercooler, and is compressed to a high pressure in the second-stage compression cavity and then is discharged. However, the secondary discharge of the compressor is directly connected with the pipeline of the air conditioning system, so that the high-temperature and high-pressure refrigerant discharged from the secondary compression cavity carries a large amount of frozen oil particles into the air conditioning system. A large amount of refrigeration oil particles entering the air conditioning system can be attached to metal pipelines of the condenser and the evaporator, so that heat exchange between a refrigerant in the metal pipelines of the air conditioning system and the outside is prevented, and the refrigerating capacity of the air conditioning system is reduced. Meanwhile, the oil level in the compressor is reduced, so that the oil supply of pump body parts is insufficient, and the parts moving relatively are seriously abraded, thereby affecting the reliability of the compressor.

With the increasing demand of air conditioners, heat pump water heaters and refrigeration compressors, the problem caused by high oil circulation rate is more and more prominent, and how to ensure the normal operation of the compressor and reduce the large amount of refrigerant oil entering an air conditioning system becomes one of the key technologies for the research of the compressor.

SUMMERY OF THE UTILITY MODEL

To the problem among the above-mentioned prior art, this application has provided a rolling rotor formula compressor and has the refrigeration cycle device of this compressor, and this compressor body subassembly has the oil-gas separation structure, can carry out the oil-gas separation to the exhaust, has avoided the compressor to get into air conditioning system along with high temperature high pressure refrigerant in the exhaust process in the refrigeration oil, has improved the refrigerating capacity of compressor, has guaranteed the lubrication and the sealing performance between the pump body motion spare part simultaneously, improves the reliability of compressor.

In a first aspect, the utility model provides a rotor compressor, this compressor include casing subassembly, motor element and pump body subassembly, pump body subassembly includes the oil-gas separation structure, the oil-gas separation structure includes according to the order at least in proper order: the lower flange comprises an oil-gas separation element which is arranged in the cavity and is used for separating refrigeration oil in the refrigerant; a lower flange cover plate provided with an oil gathering hole and an oil guiding hole communicated with each other to guide the separated refrigeration oil; and the oil gathering plate is provided with an oil gathering groove and an oil leakage hole, the oil gathering groove is used for collecting the refrigerating oil from the oil gathering hole and the oil guide hole, and the oil leakage hole is used for discharging the refrigerating oil into the shell of the compressor. Through the first aspect, the pump body structure for reducing the oil circulation rate is adopted, so that the lubricating and sealing performance between moving parts of the pump body is ensured, the entering of the refrigerant oil into the system is reduced, the reliability of the compressor is improved, and the refrigerating capacity of the system is ensured.

In one embodiment of the first aspect, the oil and gas separation structure further comprises: and the pressure drop component is connected with the oil leakage hole of the oil gathering plate so as to reduce the pressure of the high-pressure refrigerating oil discharged from the oil leakage hole. By the embodiment, in the middle-back pressure compressor or the low-back pressure compressor, the high-pressure frozen oil discharged from the oil leakage hole is depressurized, and is slowly discharged from the pressure reducing part to the oil pool in the compressor shell.

In one embodiment of the first aspect, the pressure drop means is a capillary tube.

In an embodiment of the first aspect, the pressure drop assembly is a pressure drop disc provided with pressure drop slots.

In one embodiment of the first aspect, the oil and gas separation element comprises: a baffle for impinging the frozen oil in the refrigerant and/or a mesh for impinging and adsorbing the frozen oil in the refrigerant; and a flow dividing plate for guiding the mixed oil gas of the refrigerant and the refrigeration oil to flow through the baffle plate and/or the grid. By this embodiment, it is possible to enable the frozen oil to be impacted or adsorbed by the baffle or grid and flow into the sump in the lower flange cover plate.

In one embodiment of the first aspect, the pump block assembly further comprises a crankshaft, an upper flange, an upper roller, an upper slide, an upper cylinder, a partition plate, a lower roller, a lower slide, and a lower cylinder.

In one embodiment of the first aspect, the rotary compressor is a single-cylinder compressor, a two-stage enthalpy-increasing compressor, or a three-cylinder compressor.

In one embodiment of the first aspect, the rotary compressor is a compressor for an air conditioner.

In a second aspect, the present invention provides a refrigeration cycle apparatus including the rotor compressor of any one of the first aspect and the embodiments thereof.

The utility model discloses a rotor compressor and contain this rotor compressor's refrigeration cycle device compares in prior art, has following advantage and benefit:

(1) the refrigerant oil can be prevented from entering an air conditioning system along with a high-temperature and high-pressure refrigerant in the exhaust process of the compressor and being gathered in a metal pipeline to block the heat exchange of the refrigerant;

(2) meanwhile, the oil circulation rate is reduced, the lubricating and sealing performances between moving parts of the pump body are guaranteed, the reliability of the compressor is improved, and the refrigerating capacity of the refrigerating system is guaranteed.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a schematic structural view of an air conditioning system according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a two-stage enthalpy-increasing compressor according to an embodiment of the present invention;

fig. 3 shows a structural cross-sectional view of a pump body assembly of a compressor according to an embodiment of the present invention;

fig. 4 shows a top view of a pump body assembly of a compressor according to an embodiment of the present invention;

fig. 5 shows a schematic structural view of an oil-gas separation structure of a pump body assembly according to an embodiment of the present invention;

FIG. 6 shows a cross-sectional view along line A-A in line 5 of the oil and gas separation structure of the pump body assembly according to an embodiment of the present invention;

fig. 7 shows a schematic structural view of a lower flange according to an embodiment of the present invention;

fig. 8 shows a schematic structural view of a lower flange cover plate according to an embodiment of the present invention;

fig. 9 shows a cross-sectional view of the oil gathering hole and the oil guiding hole of the lower flange cover plate along the line B-B of fig. 8 according to an embodiment of the present invention;

fig. 10 shows a schematic structural view of an oil collection plate according to an embodiment of the present invention;

FIG. 11 shows a cross-sectional structural view of a pump body assembly according to another embodiment of the present invention;

fig. 12 shows a schematic structural view of a lower flange according to another embodiment of the present invention;

fig. 13 shows a schematic structural view of a grid according to another embodiment of the present invention;

fig. 14 shows a schematic structural view of a lower flange according to another embodiment of the present invention;

fig. 15 shows a schematic structural view of a pressure drop disc according to another embodiment of the present invention;

figure 16 shows a structural cross-sectional view of a pump body assembly according to yet another embodiment of the present invention;

fig. 17 shows a schematic structural view of a pump body assembly according to yet another embodiment of the present invention.

List of reference numerals:

100-rotor compressor; 110-a housing assembly; -a motor assembly-120; a pump body assembly 130; 131-a crankshaft; 132-an upper flange; 133-upper roller; 134-upper sliding sheet; 135-upper cylinder; 136-a separator; 137-lower roller; 138-lower sliding sheet; 139-lower cylinder; 140-oil-gas separation structure; 141-lower flange; 141 a-baffle; 141 b-a splitter plate; 141 c-a grid; 142-lower flange cover plate; 142 a-an oil gathering hole; 142 b-oil guide holes; 143-oil collecting plate; 143 a-sump; 143 b-oil leakage holes 143 b; 144 a-a capillary; 144 b-pressure drop plate.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an air conditioning system for a dual stage enthalpy-increasing compressor application. As shown in fig. 1, the gaseous refrigerant flowing into the compressor through the evaporator enters the primary cylinder, is subjected to primary compression and discharged into the shell of the compressor, is mixed with the refrigerant supplemented with the intermediate air supply through the flash evaporator, and then is cooled by the intercooler to enter the secondary cylinder; the secondary cylinder carries out secondary compression on the refrigerant to form a high-temperature high-pressure gas state, the high-temperature high-pressure gas state is discharged into a gas cooler, the gas cooler is changed into a low-temperature high-pressure gas-liquid mixed refrigerant, a first part of the refrigerant enters a flash evaporator through an expansion valve in a pressure reduction mode, a second part of the refrigerant flows through an internal pipeline of the flash evaporator, the first part of the refrigerant and the second part of the refrigerant carry out heat exchange in the flash evaporator, and the first part of the refrigerant absorbs heat and is supplemented into a compressor shell (namely; the second part of refrigerant is cooled again, then enters the evaporator after being decompressed by the expansion valve, and finally is sucked by the first-stage cylinder through the one-way valve.

Referring to fig. 2, in the first embodiment, the dual-stage enthalpy-increasing compressor 100 includes a housing assembly 110, a motor assembly 120, and a pump body assembly 130 (see fig. 2). As shown in fig. 3, the pump body assembly 130 mainly includes a crankshaft 131, an upper flange 132, an upper roller 133, an upper slide 134, an upper cylinder 135, a partition 136, a lower roller 137, a lower slide 138, a lower cylinder 139, and an oil-gas separation structure 140, wherein the oil-gas separation structure 140 includes a lower flange 141, a lower flange cover 142, an oil collecting plate 143, and a pressure drop component. In this example, the pressure drop component may be a capillary 144 a. Since the capillary tube 144a is known to those skilled in the art in the compressor field as a pressure reducing device, it will not be discussed in detail herein.

As shown in fig. 2 and 3, during the operation of the pump body, the rotor of the motor assembly 120 drives the crankshaft 131 in the pump body assembly 130 to rotate. As shown in fig. 4, the upper roller 133 assembled on the eccentric circle of the crankshaft 131 rotates with the crankshaft 131, and since the outer circumferential wall of the upper roller 133 and the inner circumferential wall of the upper cylinder 135 form a cavity, the air chamber is divided into two chambers, a low pressure chamber and a high pressure chamber, by the cooperation of the upper vane 134 and the upper roller 133. The low pressure chamber is gradually increased to form a negative pressure to suck a low temperature and low pressure refrigerant along with the change of the position of the upper roller 133, and the volume of the high pressure chamber is gradually reduced to compress the refrigerant into a high temperature and a high pressure and discharge the refrigerant, thereby realizing the compression of the refrigerant. The upper cylinder 135 and the lower cylinder 139 of the pump body of the two-stage enthalpy-increasing compressor 100 can simultaneously perform the refrigerant compression operation, the upper cylinder 135 sucks the oil-gas mixed refrigerant in the refrigeration system for first-stage compression and then discharges the oil-gas mixed refrigerant into the compressor shell to be mixed with the refrigerant supplemented with intermediate air supply and the frozen oil particles in the compressor shell, the mixed oil-gas mixed refrigerant enters the lower cylinder 139 through the intercooler, the oil suction hole on the suction hole of the lower flange can suck air and carry oil, so that the lubrication of the pump body is ensured, the second-stage compression of the refrigerant is smoothly completed, and the high-temperature and high-pressure refrigerant is directly discharged into the air conditioning system after being separated by the oil gas in the cavity of the lower flange 141.

As shown in fig. 5 and 6, the lower flange 141 of the pump body, the lower flange cover 142, the oil collecting plate 143, and the capillary 144a form an oil-gas separation structure 140. As shown in fig. 7, a fixed baffle 141a and a fixed diverter plate 141b are disposed within the lower flange 141 cavity. As shown in fig. 8 and 9, the lower flange cover plate 142 is provided with an oil gathering hole 142a and an oil guide hole 142b communicating with each other, and as can be seen from fig. 9, the freezing oil flows into the oil gathering hole 142a after being guided by the oil guide hole 142b, and thus enters the oil gathering plate 143. As shown in fig. 10, the oil collecting plate 143 is provided with an oil collecting groove 143a and an oil leakage hole 143b, where the oil collecting groove 143a has an inclined structure with respect to a horizontal plane to facilitate rapid accumulation of the refrigerant oil, and the oil leakage hole 143b should be provided at the lowest portion of the oil collecting groove 143a so that the refrigerant oil can be maximally discharged into the pressure drop part or the compressor housing.

As shown in fig. 6, the oil-gas mixed refrigerant compressed by the lower cylinder 139 enters the cavity of the lower flange 141 from the air inlet of the lower flange 141, under the action of the splitter plate 141b of the lower flange 141, the oil-gas mixed refrigerant mainly flows through the baffle 141a in the cavity, the oil-gas mixed refrigerant impacts the baffle 141a and the cavity wall, the frozen oil and the gaseous refrigerant are separated and then collected along the baffle 141a and flow into the oil collecting hole 142a of the lower flange cover plate 142, and the gaseous refrigerant is discharged from the air outlet through the cavity of the lower flange 141. The freezing oil is gathered once through the oil gathering hole 142a of the lower flange cover plate 142, gathered at the oil leakage hole 142b for the second time through the oil gathering groove 143a of the oil gathering plate 143, and finally returned to the interior of the compressor housing through the capillary 144a connected with the oil leakage hole 142 b.

As shown in fig. 11, the main difference between the second embodiment and the first embodiment is: as shown in fig. 12, the lower flange 141 is provided with a mesh 141c (shown in fig. 13) and a flow distribution plate 141 b. Further, as shown in fig. 14, the lower flange 141 is provided with a mesh 141c, a baffle 141a, and a flow dividing plate 141b to achieve maximum impact and adsorption of the refrigerant oil. As shown in fig. 15, the pressure-drop disc 144b is provided with pressure-drop slots 144 b' (since the pressure-drop disc 144b is known in the art as a pressure-drop device for a compressor and will not be discussed in detail herein). The oil-gas mixed refrigerant passes through the cavity of the lower flange 141, the freezing oil is adhered to the grid 141c and is gathered to flow into the oil gathering hole 142a of the lower flange cover plate 142, the oil gathering groove 143a and the oil leakage hole 143b of the oil gathering plate 143, and the pressure drop groove 144 b' of the pressure drop disc 144b returns oil to enter the compressor shell. Here, since the structure of the compressor 100 has been described in detail above, it is not described in detail herein.

As shown in fig. 16, the compressor 100 of the third embodiment is a low-backpressure single-cylinder compressor, refrigerant in the refrigeration system enters the housing and then enters the low-pressure cavity of the pump body, the compressed high-temperature and high-pressure oil-gas mixed refrigerant passes through the oil-gas separation structure 140, then the gaseous refrigerant is directly discharged into the system, and the refrigerant oil flows through the oil-gas separation structure 140 and returns to the oil sump in the compressor housing. Here, since the structure of the compressor 100 has been described in detail above, it is not described in detail herein.

As shown in fig. 17, the compressor 100 of the fourth embodiment is a high-back-pressure single-cylinder compressor, and does not need a pressure drop component, the refrigerant in the refrigeration system directly enters the low-pressure cavity of the pump body, the compressed high-temperature and high-pressure oil-gas mixed refrigerant passes through the oil-gas separation assembly, then the gaseous refrigerant is directly discharged into the compressor housing and then discharged into the system, and the refrigerant oil flows through the oil-gas separation assembly and returns to the oil sump in the compressor housing. Here, since the structure of the compressor 100 has been described in detail above, it is not described in detail herein.

In addition, the present invention also provides a refrigeration cycle apparatus including the rotor type compressor 100, which is not described herein in detail since the compressor has been described above in detail.

Preferably, the refrigeration cycle device is used for an air conditioner.

It should be understood that the present invention provides a rotor compressor, which may be a single cylinder compressor, a double cylinder compressor or a triple cylinder compressor.

Preferably, in the rotor compressor of the present invention, the pressure drop component may be disposed in any one of a two-stage enthalpy-increasing compressor, a low back pressure compressor and a high back pressure compressor.

The utility model discloses a rotor compressor and contain this rotor compressor's refrigeration cycle device compares in prior art, has following advantage and benefit: (1) the refrigerant oil can be prevented from entering an air conditioning system along with a high-temperature and high-pressure refrigerant in the exhaust process of the compressor and being gathered in a metal pipeline to block the heat exchange of the refrigerant; (2) meanwhile, the oil circulation rate is reduced, the lubricating and sealing performances between moving parts of the pump body are guaranteed, the reliability of the compressor is improved, and the refrigerating capacity of the refrigerating system is guaranteed.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. The utility model provides a rotor compressor, its includes casing subassembly, motor element and pump body subassembly, its characterized in that, pump body subassembly includes the oil-gas separation structure, the oil-gas separation structure includes in proper order at least:

the lower flange comprises an oil-gas separation element which is arranged in the cavity and is used for separating refrigeration oil in the refrigerant;

a lower flange cover plate provided with an oil gathering hole and an oil guiding hole communicated with each other to guide the separated refrigeration oil; and

the oil collecting plate is provided with an oil collecting groove and an oil leakage hole, the oil collecting groove is used for collecting the refrigerating oil from the oil collecting hole and the oil guide hole, and the oil leakage hole is used for discharging the refrigerating oil into the shell of the compressor.

2. A rotary compressor as recited in claim 1, wherein the oil-gas separating structure further comprises:

and the pressure drop component is connected with the oil leakage hole of the oil gathering plate so as to reduce the pressure of the high-pressure refrigerating oil discharged from the oil leakage hole.

3. A rotary compressor according to claim 2, wherein the pressure drop means is a capillary tube.

4. A rotor compressor according to claim 2, characterized in that the pressure drop means are pressure drop discs provided with pressure drop slots.

5. A rotor compressor according to any one of claims 1 to 4, wherein the oil-gas separation element comprises:

a baffle for impinging the frozen oil in the refrigerant and/or a mesh for impinging and adsorbing the frozen oil in the refrigerant; and

a splitter plate for directing a mixture of said refrigerant and said refrigeration oil to flow through said baffle and/or said mesh.

6. A rotor compressor according to any one of claims 1 to 4, wherein the pump body assembly further comprises a crankshaft, an upper flange, an upper roller, an upper vane, an upper cylinder, a partition plate, a lower roller, a lower vane and a lower cylinder.

7. A rotary compressor according to any one of claims 1 to 4, characterized in that it is a single-cylinder compressor, a two-stage enthalpy-increasing compressor or a three-cylinder compressor.

8. A rotor compressor according to any one of claims 1 to 4, characterized in that the rotor compressor is a compressor for an air conditioner.

9. A refrigerating cycle apparatus, characterized in that it comprises a rotary compressor according to any one of claims 1 to 8.