CN113550907B

CN113550907B - Compressor and Refrigeration Equipment

Info

Publication number: CN113550907B
Application number: CN202110973154.9A
Authority: CN
Inventors: 郑礼成; 陈晋涵; 潘雯
Original assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2023-09-01
Anticipated expiration: 2041-08-23
Also published as: CN113550907A

Abstract

The invention discloses a compressor and refrigeration equipment. The compressor comprises a shell and a pump body assembly, wherein the shell is arranged in an extending mode along the vertical direction; the pump body assembly is arranged in the shell, the shell is divided into a first oil storage cavity and an exhaust cavity which are not communicated with each other, the first oil storage cavity is positioned above the pump body assembly, and the exhaust cavity is positioned below the pump body assembly. The compressor of the present invention can ensure the reliability thereof at the time of starting operation.

Description

Compressor and refrigeration equipment

Technical Field

The invention relates to the technical field of refrigeration, in particular to a compressor and refrigeration equipment.

Background

In the related art, after the compressor is not used for a long time, the refrigerant is easy to liquefy and mix with the lubricating oil in the oil storage cavity, so that the lubricating oil is doped with the refrigerant, the viscosity of the lubricating oil is reduced, and the reliability of the compressor is reduced when the compressor starts to operate.

Disclosure of Invention

The main purpose of the present invention is to propose a compressor, aimed at guaranteeing the reliability of the compressor when starting to operate.

In order to achieve the above object, the compressor provided by the present invention includes a housing and a pump body assembly, wherein the housing extends in a vertical direction; the pump body assembly is arranged in the shell, the shell is divided into a first oil storage cavity and an exhaust cavity which are not communicated with each other, the first oil storage cavity is positioned above the pump body assembly, and the exhaust cavity is positioned below the pump body assembly.

Optionally, a second oil storage cavity is formed in the bottom of the shell, the compressor further comprises a motor assembly, the motor assembly is installed in the shell and located between the pump body assembly and the second oil storage cavity, and the shell is in the air exhaust cavity formed between the motor assembly and the pump body assembly.

Optionally, the pump body assembly comprises a cylinder, a main bearing and an auxiliary bearing, and the main bearing is installed at the bottom end of the cylinder; the auxiliary bearing is arranged at the top end of the cylinder, the main bearing and the auxiliary bearing are enclosed to form a compression cavity, the periphery of the auxiliary bearing is in sealing connection with the shell, the top of the auxiliary bearing is enclosed to form a first oil storage cavity with the shell, and the first oil storage cavity is communicated with the compression cavity.

Optionally, the periphery of auxiliary bearing upwards protrudes and is equipped with the turn-ups, the casing includes first separator, first barrel and the drain pan that connects gradually along its direction of height, turn-ups, first barrel and first separator welded connection, turn-ups, auxiliary bearing and first separator enclose and close and form first oil storage chamber.

Optionally, the compressor further comprises a liquid storage tank, and the liquid storage tank is installed at the top of the shell.

Optionally, a heat insulation layer is arranged between the bottom of the liquid storage tank and the top of the shell.

Optionally, the bottom of the liquid storage tank is spaced from the top of the housing.

Optionally, the liquid storage tank includes top shell, second barrel and the second separator that connects gradually along its direction of height, the periphery of second separator bottom is protruding downwards to be equipped with 3 at least supporting legs, the supporting legs connect in the casing top.

Optionally, the sum of the contact areas of the support legs and the top of the housing is not more than half the area of the top periphery of the housing.

Optionally, the pump body assembly has an air suction channel communicating the first oil storage cavity and the compression cavity, and the compressor further includes an air suction pipe, and the air suction pipe communicates the liquid storage tank and the air suction channel.

Optionally, a first air suction hole is formed in the auxiliary bearing, a second air suction hole communicated with the compression cavity is formed in the cylinder, the first air suction hole is communicated with the second air suction hole to form an air suction channel, and one end of the air suction pipe is inserted into the first air suction hole.

Optionally, a sealing groove is formed in the hole wall of the first air suction hole along the circumferential direction of the hole wall, and a sealing piece is arranged in the sealing groove.

Optionally, the other end of the air suction pipe is inserted into the liquid storage tank, and an oil return hole is formed in the part of the air suction pipe, which is positioned in the liquid storage tank.

Optionally, the diameter of the oil return hole is not less than 0.5mm and not more than 2mm.

Optionally, a ratio between the volume of the first oil storage chamber and the displacement of the pump body assembly is not less than 0.5 and not more than 10.

The invention also proposes a refrigeration device comprising a compressor as defined in any one of the above.

According to the compressor disclosed by the invention, the first oil storage cavity and the exhaust cavity are not communicated with each other, so that the refrigerant in the exhaust cavity is prevented from liquefying and dripping into the first oil storage cavity, the refrigerant is prevented from being doped in lubricating oil in the first oil storage cavity, and the reliability of the compressor when the compressor starts to operate is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a cross-sectional view of the compressor of FIG. 1;

fig. 3 is a partial enlarged view at a in fig. 2.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Compressor	24	Compression chamber
10	Shell body	25	Suction channel
				101	First oil storage cavity	251	A first air suction hole
102	Exhaust cavity	252	A second air suction hole
				103	Second oil storage cavity	253	Sealing groove
11	First separator	30	Motor assembly
				12	First cylinder body	40	Liquid storage tank
13	Bottom shell	41	Top shell
				20	Pump body assembly	42	Second cylinder
21	Cylinder	43	Second separator
				22	Main bearing	44	Supporting leg
23	Auxiliary bearing	50	Air suction pipe
				231	Flanging edge	51	Oil return hole

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating 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 addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a compressor 100, wherein the compressor 100 is a rotary compressor and can be a single-cylinder single-row compressor, a single-cylinder double-row compressor, a double-cylinder compressor and the like.

In the embodiment of the present invention, as shown in fig. 1 to 3, the compressor 100 includes a housing 10 and a pump body assembly 20, wherein the housing 10 is disposed to extend in a vertical direction; the pump body assembly 20 is arranged in the shell 10, and divides the shell 10 into a first oil storage cavity 101 and an exhaust cavity 102 which are not communicated with each other, the first oil storage cavity 101 is positioned vertically above the pump body assembly 20, and the exhaust cavity 102 is positioned vertically below the pump body assembly 20.

Specifically, the housing 10 is hollow to house the pump body assembly 20, the motor assembly 30, and other components. The pump body assembly 20 is used for compressing the refrigerant to change the low-temperature low-pressure gas state into the high-temperature high-pressure gas state. It can be appreciated that the pump body assembly 20 has a plurality of pairs of friction pairs, if the friction pairs cannot be effectively lubricated, abnormal wear is easily generated, so that the operation of the pump body assembly 20 is blocked, and the reliability of the compressor 100 in operation is reduced, so that the first oil storage cavity 101 is used for storing lubricating oil to supply the lubricating oil to the pump body assembly 20, and smooth operation of the pump body assembly 20 is ensured, and the reliability of the compressor 100 in operation is ensured. The refrigerant is compressed by the pump body assembly 20, enters the exhaust cavity 102, and is discharged from the compressor 100 through an exhaust pipe which is arranged on the shell 10 and is communicated with the exhaust cavity 102.

The bottom of traditional compressor is equipped with the oil storage chamber, oil storage chamber and exhaust chamber intercommunication, it can be understood that, the refrigerant of exhaust intracavity can't remain high temperature high pressure gaseous state all the time, if the compressor is not used for a long time, the refrigerant can liquefy and drip into in the oil storage chamber, mix with the lubricating oil in the oil storage chamber, lead to the oil viscosity of lubricating oil to reduce, therefore when the compressor starts once more, the oil storage chamber is supplied with oil to the pump body subassembly, the lubricating oil that has the refrigerant of doping is carried to the pump body subassembly, it makes the oil viscosity of lubricating oil decline to have the refrigerant in the lubricating oil, lead to the pump body subassembly unable to obtain effective lubrication, the reliability of compressor when beginning to run is reduced. Therefore, in the compressor 100 of the embodiment of the present invention, the first oil storage chamber 101 and the exhaust chamber 102 are not communicated with each other, so as to prevent the refrigerant in the exhaust chamber 102 from liquefying and dripping into the first oil storage chamber 101, thereby preventing the lubricant in the first oil storage chamber 101 from being doped with the refrigerant, and further ensuring the reliability of the compressor 100 when starting to operate.

In an embodiment, as shown in fig. 2, a second oil storage cavity 103 is disposed at the bottom of the housing 10, the compressor 100 further includes a motor assembly 30, the motor assembly 30 is installed in the housing 10 and is located between the pump body assembly 20 and the second oil storage cavity 103, and the housing 10 forms the air exhaust cavity 102 between the motor assembly 30 and the pump body assembly 20.

Specifically, the pump body assembly 20 includes a crankshaft, a hollow hole is formed in the crankshaft along an axial direction of the crankshaft, one end of the crankshaft is connected to the motor assembly 30 in a penetrating manner and extends into the second oil storage cavity 103, and the other end of the crankshaft extends into the first oil storage cavity 101 so as to communicate the first oil storage cavity 101 with the second oil storage cavity 103. The motor assembly 30 is electrified to drive the crankshaft to rotate so as to convey the lubricating oil in the second oil storage cavity 103 into the first oil storage cavity 101 through centrifugal force, the lubricating oil enters the pump body assembly 20 from the first oil storage cavity 101, the friction pair in the pump body assembly 20 is lubricated, and finally the lubricating oil drops from the pump body assembly 20 back into the second oil storage cavity 103 to form the recycling of the lubricating oil in the shell 10.

It will be appreciated that during operation of the compressor 100, the refrigerant is gaseous within the compressor 100 and does not become entrained in the lubricant, and that the lubricant within the second and first oil storage chambers 103, 101 is not entrained with the refrigerant. After the compressor 100 stops running, the refrigerant in the exhaust cavity 102 is gradually liquefied and dripped into the second oil storage cavity 103, while the lubricating oil in the first oil storage cavity 101 is still not doped with the refrigerant, so that good oil viscosity is achieved, the running reliability of the compressor 100 is ensured when the compressor 100 is started next time, the refrigerant is in a gaseous state after the compressor 100 is running for a period of time, and the lubricating oil in the second oil storage cavity 103 and the first oil storage cavity 101 is not doped with the refrigerant, so that the reliability of the whole running process of the compressor 100 is ensured.

In one embodiment, as shown in fig. 2 and 3, the pump body assembly 20 includes a cylinder 21, a main bearing 22, and a sub-bearing 23, wherein the main bearing 22 is mounted at the bottom end of the cylinder 21; the auxiliary bearing 23 is mounted at the top end of the cylinder 21, the main bearing 22 and the auxiliary bearing 23 enclose to form a compression cavity 24, the periphery of the auxiliary bearing 23 is in sealing connection with the shell 10, the top of the auxiliary bearing 23 and the shell 10 enclose to form a first oil storage cavity 101, and the first oil storage cavity 101 is communicated with the compression cavity 24.

Specifically, the shape of the auxiliary bearing 23 is adapted to the interior of the housing 10, and the outer peripheral wall of the auxiliary bearing 23 is welded to the inner peripheral wall of the housing 10 in a ring manner, so as to ensure the tightness between the outer peripheral wall of the auxiliary bearing 23 and the inner peripheral wall of the housing 10, and prevent the refrigerant from entering the first oil storage chamber 101. The pump body assembly 20 further comprises a piston and a sliding vane, the crankshaft comprises a secondary shaft section, an eccentric section and a main shaft section which are sequentially connected, the secondary shaft section is connected to the secondary bearing 23, the piston is sleeved on the eccentric section, the main shaft section is connected to the main bearing 22, a sliding groove is formed in the inner peripheral wall of the cylinder 21, the sliding vane is slidably mounted in the sliding groove, one end of the sliding vane is abutted to the groove wall of the sliding groove through a spring, the other end of the sliding vane stretches into the compression cavity 24 and is abutted to the outer peripheral surface of the piston, so that the piston is driven to rotate through rotation of the crankshaft, and suction, compression and discharge of a refrigerant in the cylinder 21 are realized.

Further, as shown in fig. 2 and 3, the peripheral edge of the auxiliary bearing 23 is provided with a flange 231 in an upward protruding manner, the housing 10 includes a first partition 11, a first cylinder 12 and a bottom shell 13 sequentially connected along the height direction thereof, the flange 231, the first cylinder 12 and the first partition 11 are welded and connected, and the flange 231, the auxiliary bearing 23 and the first partition 11 enclose to form the first oil storage cavity 101.

Specifically, the flange 231 is in a ring shape, the outer circumferential wall of the flange 231 is attached to the inner circumferential wall of the first cylinder 12, and the upper edge of the flange 231, the upper edge of the first cylinder 12 and the lower edge of the first partition 11 are welded to each other, so that a weld is formed at the welded position of the three, thereby ensuring the tightness of the first oil storage cavity 101. The first separator 11 may be provided in a flat plate shape or in an arc plate shape, and is not limited thereto.

In one embodiment, as shown in fig. 2, the ratio between the volume of the first oil storage chamber 101 and the displacement of the pump body assembly 20 is not less than 0.5 and not more than 10. Specifically, if the ratio between the volume of the first oil storage chamber 101 and the displacement of the pump body assembly 20 is less than 0.5, the volume of the first oil storage chamber 101 is too small to provide sufficient lubrication oil to the pump body assembly 20 when the compressor 100 starts to operate. If the ratio between the volume of the first oil storage chamber 101 and the displacement of the pump body assembly 20 is greater than 10, the volume of the first oil storage chamber 101 is excessively large, resulting in excessively large overall volume of the compressor 100 and excessively large occupied space. Therefore, in this embodiment, to ensure that the volume of the first oil storage chamber 101 is reasonable, the ratio between the volume of the first oil storage chamber 101 and the displacement of the pump body assembly 20130 is preferably set to 0.5-10. Such as but not limited to 1, 2, 3, 4, 5, 6, 7, 8, or 9, etc.

In one embodiment, as shown in fig. 1 and 2, the compressor 100 further includes a liquid storage tank 40, and the liquid storage tank 40 is mounted on the top of the housing 10. Specifically, the liquid storage tank 40 is used for storing the refrigerant and delivering the refrigerant to the pump body assembly 20. It will be appreciated that the placement of the liquid storage tank 40 of the conventional compressor 100 on the side of the housing 10 results in a large footprint for the compressor 100 and that the liquid storage tank 40 is not coaxial with the housing 10 resulting in a large vibration of the compressor 100 during operation. The compressor 100 of the present embodiment is disposed at the top of the housing 10 through the liquid storage tank 40 to reduce the occupied space of the compressor 100 and reduce vibration generated when the compressor 100 is operated.

Further, as shown in fig. 2, a heat insulating layer is disposed between the bottom of the liquid storage tank 40 and the top of the housing 10. Specifically, when the compressor 100 is in operation, the pump body assembly 20 generates a large amount of heat, which may reduce the performance of the compressor 100 if the refrigerant is severely heated. In this embodiment, a heat insulation layer is disposed between the bottom of the liquid storage tank 40 and the top of the housing 10, i.e. on the heat transfer path between the liquid storage tank 40 and the housing 10, so as to prevent the serious phenomenon of heating the refrigerant. It will be appreciated that the insulating layer may be an air layer or a vacuum layer, or may be a thermal insulating coating, or may be a thermal insulating plate, which is not limited thereto.

In one embodiment, as shown in fig. 2, the bottom of the liquid storage tank 40 is spaced from the top of the housing 10. Specifically, a supporting structure is arranged between the bottom of the liquid storage tank 40 and the top of the shell 10, so that a space is formed between the bottom of the liquid storage tank 40 and the top of the shell 10, air is arranged between the bottom of the liquid storage tank 40 and the top of the shell 10, and has a low heat conductivity coefficient, so that a good heat insulation effect can be achieved, and the refrigerant in the liquid storage tank 40 is prevented from overheating.

Further, as shown in fig. 1-3, the liquid storage tank 40 includes a top shell 41, a second cylinder 42 and a second partition 43 sequentially connected along the height direction, at least one supporting leg 44 is protruding downward from the periphery of the bottom of the second partition 43, and the supporting leg 44 is connected to the top of the housing 10. Specifically, the top case 41, the second cylinder 42 and the second partition 43 enclose a liquid storage chamber for storing the refrigerant. The second partition 43 may be provided in a flat plate shape or in an arc plate shape, and is not limited thereto. The support feet 44 are used to support the reservoir 40 at the top of the housing 10 with a spacing between the bottom of the reservoir 40 and the top of the housing 10, the spacing between the bottom of the reservoir 40 and the top of the housing 10 being positively correlated with the height of the support feet 44. In the present embodiment, the supporting leg 44 is formed by protruding downward the periphery of the bottom of the second partition 43, and the bottom end of the supporting leg 44 is welded to the top of the housing 10. It will be appreciated that in other embodiments, the supporting leg 44 may be formed by protruding upward from the periphery of the top of the housing 10, and the top end of the supporting leg 44 is welded to the bottom of the second partition 43. The support leg 44 may include a first leg formed by upwardly projecting the peripheral edge of the top of the case 10 and a second leg formed by downwardly projecting the peripheral edge of the bottom of the second partition 43, and the first leg and the second leg may be welded to each other. Further, the support feet 44 are spaced apart from one another by the same distance to provide more stable support to the fluid reservoir 40.

Further, as shown in fig. 1 and 2, the sum of the contact areas of the support legs 44 and the top of the housing 10 is not more than half the area of the top periphery of the housing 10. Specifically, the heat insulation effect of the air is good, so the heat of the housing 10 is mostly transferred to the liquid storage tank 40 through the supporting feet 44. Regarding the top periphery of the housing 10 as a circular ring, the sum of the contact areas of the supporting legs 44 and the circular ring is not more than one half of the area of the circular ring, and by limiting the contact area of the supporting legs 44 and the housing 10, the housing 10 is prevented from transmitting excessive heat to the liquid storage tank 40 through the supporting legs 44, so that the refrigerant in the liquid storage tank 40 is overheated.

In one embodiment, as shown in fig. 2 and 3, the pump body assembly 20 has a suction channel 25 communicating the first oil storage chamber 101 with the compression chamber 24, and the compressor 100 further includes a suction pipe 50, where the suction pipe 50 communicates the liquid storage tank 40 with the suction channel 25. Specifically, the suction pipe 50 communicates the liquid storage tank 40 with the suction passage 25 to communicate the compression chamber 24 with the liquid storage tank 40, so that when the compressor 100 is operated, the refrigerant in the liquid storage tank 40 enters the compression chamber 24 through the suction pipe 50 to be compressed.

Further, as shown in fig. 3, a first air suction hole 251 is provided on the auxiliary bearing 23, a second air suction hole 252 is provided on the cylinder 21 and is communicated with the compression chamber 24, the first air suction hole 251 is communicated with the second air suction hole 252 to form the air suction channel 25, and one end of the air suction pipe 50 is inserted into the first air suction hole 251. Specifically, the first air suction hole 251 is a straight hole, and the extending direction of the first air suction hole 251 is parallel to the axial direction of the auxiliary bearing 23, so as to facilitate the processing and hole making. The second air suction hole 252 is an inclined hole, one end of the second air suction hole 252 is communicated with the first air suction hole 251, the other end of the second air suction hole 252 is communicated with the compression cavity 24, and one end of the air suction pipe 50 is inserted into the first air suction hole 251 so as to be communicated with the compression cavity 24 and the liquid storage tank 40, so that when the compressor 100 operates, a refrigerant in the liquid storage tank 40 enters the compression cavity 24 through the air suction pipe 50 and the second air suction hole 252 to be compressed.

Further, as shown in fig. 3, a sealing groove 253 is formed on the wall of the first suction hole 251 along the circumferential direction, and a sealing member is disposed in the sealing groove 253. Specifically, the first suction hole 251 is connected to the first oil storage chamber 101, and a gap exists between the suction pipe 50 and the wall of the first suction hole 251 in the radial direction of the suction pipe 50, through which the lubricating oil in the first oil storage chamber 101 is liable to leak into the compression chamber 24, resulting in a decrease in the performance of the compressor 100. In this embodiment, by providing the sealing groove 253 and the sealing member between the hole wall of the first suction hole 251 and the outer peripheral wall of the suction pipe 50, the sealing member is a sealing ring to seal the radial gap between the first suction hole 251 and the suction pipe 50, so as to prevent the lubricant from leaking into the compression chamber 24, thereby ensuring the performance of the compressor 100. It will be appreciated that in other embodiments, the counter bearing 23 may be provided with a counter bore, the first suction hole 251 is disposed in the counter bore, the end of the suction pipe 50 facing the pump body assembly 20 is provided with a countersunk head, and the countersunk head is inserted into the counter bore to seal the first suction hole 251 in the axial direction, so as to prevent the lubricant from leaking into the compression chamber 24.

In one embodiment, as shown in fig. 3, the other end of the air suction pipe 50 is inserted into the liquid storage tank 40, and an oil return hole 51 is formed in a portion of the air suction pipe 50 located in the liquid storage tank 40. Specifically, when the refrigerant is discharged from the compressor 100, a small amount of lubricant is easily entrained, resulting in a reduction in the total amount of lubricant in the compressor 100, the refrigerant circulates in the refrigeration system, and when the refrigerant returns to the liquid storage tank 40, a small amount of lubricant is carried, and since the portion of the suction pipe 50 in the liquid storage tank 40 has a certain length, the lubricant cannot enter the compression chamber 24 through the suction pipe 50, resulting in a failure in recovery of the lubricant in the liquid storage tank 40. In this embodiment, the oil return hole 51 is formed on the air suction pipe 50 near the bottom of the liquid storage tank 40, and the refrigerant flowing in the air suction pipe 50 generates negative pressure at the oil return hole 51 to suck the lubricating oil in the liquid storage tank 40 into the air suction pipe 50 and enter the compression chamber 24 from the air suction pipe 50, so as to lubricate the friction pair in the pump body assembly 20. Further, the suction pipe 50 is made of steel or copper.

Further, the oil return hole 51 has a diameter of not less than 0.5mm and not more than 2mm. Specifically, if the diameter of the oil return hole 51 is smaller than 0.5mm, the amount of lubricating oil returned to the compression chamber 24 is too small to effectively lubricate the friction pair in the pump body assembly 20, and the reliability of the compressor 100 is lowered. If the diameter of the oil return hole 51 is greater than 2mm, excessive lubricant or liquid refrigerant returns to the compression chamber 24, which is likely to cause a liquid hammer phenomenon, and the reliability of the compressor 100 is reduced. Therefore, in the present embodiment, in order to ensure that a reasonable pressure difference is generated to ensure the reliability of the compressor 100, the diameter of the oil return hole 51 is preferably set to 0.5mm-2mm. Such as but not limited to 1mm or 1.5mm.

The present invention also proposes a refrigeration device, which includes a compressor 100, where the specific structure of the compressor 100 refers to the above embodiment, and since the refrigeration device adopts all the technical solutions of all the above embodiments, at least the refrigeration device has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein. The refrigeration device may be an air conditioner, a freezer, a refrigerator, a heat pump water heater, or the like.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A compressor, comprising:

a housing extending in a vertical direction; and

the pump body assembly is arranged in the shell and divides the shell into a first oil storage cavity and an exhaust cavity which are not communicated with each other, the first oil storage cavity is positioned vertically above the pump body assembly, and the exhaust cavity is positioned vertically below the pump body assembly;

the first oil storage cavity is used for storing lubricating oil, and the refrigerant enters the exhaust cavity after being compressed by the pump body component and is discharged;

the bottom of casing is provided with the second oil storage chamber, the compressor still includes motor assembly, motor assembly install in the casing, and be located pump body assembly with between the second oil storage chamber, the casing be in motor assembly with form between the pump body assembly the exhaust chamber.

2. The compressor of claim 1, wherein the pump body assembly comprises:

a cylinder;

the main bearing is arranged at the bottom end of the cylinder; the method comprises the steps of,

the auxiliary bearing is arranged at the top end of the cylinder, the main bearing and the auxiliary bearing are enclosed to form a compression cavity, the periphery of the auxiliary bearing is in sealing connection with the shell, the top of the auxiliary bearing is enclosed to form a first oil storage cavity with the shell, and the first oil storage cavity is communicated with the compression cavity.

3. The compressor of claim 2, wherein the peripheral edge of the auxiliary bearing is provided with a flange in an upward protruding manner, the housing comprises a first partition, a first cylinder and a bottom shell which are sequentially connected along the height direction of the housing, the flange, the first cylinder and the first partition are connected in a welded manner, and the flange, the auxiliary bearing and the first partition enclose to form the first oil storage cavity.

4. A compressor as claimed in any one of claims 2 to 3, further comprising a liquid reservoir mounted to the top of the housing.

5. The compressor of claim 4, wherein a thermal barrier is disposed between the bottom of the reservoir and the top of the housing.

6. The compressor of claim 5 wherein said reservoir bottom is spaced from said housing top.

7. The compressor of claim 4, wherein the liquid storage tank comprises a top shell, a second cylinder and a second partition member which are sequentially connected along the height direction, at least 3 supporting feet are arranged at the periphery of the bottom of the second partition member in a protruding manner, and the supporting feet are connected to the top of the shell.

8. The compressor of claim 7 wherein the sum of the contact areas of the support legs and the top of the shell is no more than half the area of the top periphery of the shell.

9. The compressor of claim 4, wherein said pump body assembly has a suction passage communicating said first oil reservoir with said compression chamber, said compressor further comprising a suction tube communicating said reservoir with said suction passage.

10. The compressor of claim 9, wherein a first suction hole is formed in the auxiliary bearing, a second suction hole which is communicated with the compression chamber is formed in the cylinder, the first suction hole is communicated with the second suction hole to form the suction channel, and one end of the suction pipe is inserted into the first suction hole.

11. The compressor of claim 10, wherein a wall of the first suction hole is provided with a sealing groove along a circumferential direction thereof, and a sealing member is provided in the sealing groove.

12. The compressor of claim 9, wherein the other end of the suction pipe is inserted into the liquid storage tank, and an oil return hole is formed in a portion of the suction pipe located in the liquid storage tank.

13. The compressor of claim 12, wherein the oil return hole has a diameter of not less than 0.5mm and not more than 2mm.

14. A compressor as claimed in any one of claims 1 to 3, wherein the ratio between the volume of the first oil storage chamber and the displacement of the pump body assembly is not less than 0.5 and not more than 10.

15. A refrigeration device comprising a compressor as claimed in any one of claims 1 to 14.