CN214170819U - Scroll compressor, refrigeration equipment and vehicle - Google Patents

Abstract

The utility model belongs to the technical field of refrigeration plant, more specifically say, relate to a scroll compressor, refrigeration plant and vehicle. The scroll compressor includes that inside is equipped with the oil content structure and throttles the casing of connecting the structure, still is formed with compression chamber, oil return channel, first oil storage chamber and second oil storage chamber in the casing, and first oil storage chamber communicates with the oil-out of oil content structure, and the second oil storage chamber passes through throttled connection structure and communicates with first oil storage chamber, and the second oil storage chamber has the end of producing oil with oil return channel intercommunication and holds with the gas storage of compression chamber intercommunication. The refrigeration oil separated by the oil separation structure enters the second oil storage cavity after being subjected to pressure reduction treatment by the first oil storage cavity and the throttling connection structure, the temperature and the pressure of the refrigeration oil are reduced, and a refrigerant dissolved in the refrigeration oil is separated out and discharged to the compression cavity.

Description

Scroll compressor, refrigeration equipment and vehicle

Technical Field

The utility model belongs to the technical field of refrigeration plant, more specifically say, relate to a scroll compressor, refrigeration plant and vehicle.

Background

The scroll compressor is a positive displacement compressor with high efficiency, low noise and smooth operation, and is widely used in an automotive air conditioning system as a third-generation vehicle-mounted compressor. Wherein, on-vehicle scroll compressor need provide the refrigeration oil and lubricate the vice friction in the scroll compressor in the use to reduce the noise that vice during operation of friction produced, generally, in current scroll compressor, because the refrigeration oil injection volume is little, often adopt throttling mechanism to supply to oil return passage the refrigeration oil of high-pressure side through oil content structure separation and lubricate the vice friction. However, in the lubricating oil supply mode, the amount of the refrigerating oil which can be supplied by one circulation is small, the lubricating condition is poor, and the problems of friction power consumption increase or abnormal wear and the like are easily caused due to insufficient lubrication, so that the performance of the scroll compressor is reduced, and even the scroll compressor is damaged due to faults.

As shown in fig. 1, in order to solve the above-mentioned problem, in the prior art, a throttle structure 50 such as a capillary tube structure is provided between the oil content structure 40 and the oil return passage 15 of the scroll compressor, and the refrigerant oil separated by the oil content structure 40 is throttled and depressurized by the throttle structure 50 and then supplied to the oil return passage 15 to lubricate each friction pair. However, the refrigeration oil is still in a high-pressure high-temperature state after being processed by the centrifugal oil separation structure 40, and a certain proportion of refrigerant is still dissolved or mixed in the refrigeration oil, so that the high-temperature high-pressure refrigeration oil mixed with the refrigerant is throttled and depressurized by the throttling structure 50 and then directly enters the oil return channel 15, on one hand, part of the refrigerant mixed in the refrigeration oil is repeatedly compressed but cannot enter a system for effective circulating heat exchange, so that the refrigeration capacity of the scroll compressor is reduced, and the scroll compressor does useless work by compressing the part of the refrigerant, so that the refrigeration efficiency of the scroll compressor is reduced; on the other hand, still be in high temperature state when getting into compression chamber 13 owing to the refrigeration oil circulation, the refrigeration oil carries the heat more, when the oil return passage 15 flows back to scroll compressor's the side of breathing in, also carry this part heat to the side of breathing in, heat conduction makes the refrigerant temperature rise to the refrigerant, lead to the refrigerant just beginning to be heated the inflation at the side of breathing in, make the refrigerant density of the side of breathing in descend, thereby lead to scroll compressor volumetric efficiency to descend, cause scroll compressor refrigeration volume to descend, seriously influence scroll compressor's compression efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a throttle oil return mechanism, scroll compressor, refrigeration plant and vehicle to solve the high temperature refrigeration oil after the throttle of the scroll compressor among the prior art of throttle mechanism steps down and carry the refrigerant and get into scroll compressor's the side of breathing in, lead to the technical problem that scroll compressor volumetric efficiency reduces, the refrigeration volume descends.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a scroll compressor, which comprises a housing and sets up the oil content structure in the casing, be provided with compression chamber and oil return channel in the casing, scroll compressor is still including setting up the throttle connection structure in the casing, and still be provided with the first oil storage chamber that is linked together with the oil-out of oil content structure in the casing, and the second oil storage chamber that is linked together through throttle connection structure and first oil storage chamber, second oil storage chamber has oil storage end and gas storage end, oil storage end is linked together with oil return channel, the gas storage end is linked together with the compression chamber.

In one embodiment, the gas storage end is communicated with a position where the pressure in the compression cavity is equal to or lower than the pressure in the second oil storage cavity.

In one embodiment, an exhaust channel is further arranged in the casing, an air outlet of the exhaust channel is communicated with a position where the pressure in the compression cavity is equal to or lower than the pressure in the second oil storage cavity, and an air inlet of the exhaust channel is communicated with the air storage end.

In one embodiment, a backflow prevention structure for preventing the backflow of fluid in the compression chamber is arranged in the exhaust passage.

In one embodiment, the backflow prevention structure is a one-way valve or a check valve.

In one embodiment, the casing is further provided with an air suction cavity communicated with the compression cavity, and the cavity wall of the second oil storage cavity is attached to the cavity wall of the air suction cavity.

In one embodiment, the throttle connecting structure is a throttle channel arranged in the casing, and the throttle channel penetrates through the first oil storage cavity and the second oil storage cavity.

In an embodiment, the throttling channel is a curved channel having at least one curved section.

In one embodiment, the throttling connection structure is a capillary throttling structure.

In one embodiment, the scroll compressor further comprises a fixed scroll disposed in the casing, the oil content structure comprises an oil content housing, the first oil storage chamber, the second oil storage chamber and the throttle connection structure are disposed in the oil content housing, an exhaust hole is disposed on the oil content housing, and the exhaust channel is disposed on the fixed scroll and connected with the exhaust hole.

In one embodiment, the scroll compressor further comprises a fixed scroll disposed in the casing, and the first oil storage chamber, the second oil storage chamber, the throttle connection structure and the exhaust passage are disposed on the fixed scroll.

In one embodiment, the oil separating structure comprises an oil separating shell, the oil separating shell is provided with a connecting surface facing the fixed scroll, a first groove, a second groove and a third groove are arranged on the end surface of the fixed scroll facing the connecting surface, the connecting surface is attached to the end surface of the fixed scroll, the connecting surface and the first groove, the second groove and the third groove respectively enclose to form a first oil storage cavity, a second oil storage cavity and an exhaust passage, and the throttling connecting structure is arranged between the first groove and the second groove.

In one embodiment, the fixed scroll disk is also provided with an exhaust hole communicated with the compression cavity, and the air outlet end of the exhaust channel is connected with the exhaust hole.

In one embodiment, the fixed scroll is further provided with an oil discharge hole communicated with the oil return channel, and the oil storage end is connected with the oil return channel through the oil discharge hole.

In an embodiment, the second recess includes the main cell body and sets up in the vice cell body of main cell body one end, and the sunken degree of depth of main cell body is greater than the sunken degree of vice cell body, and the one end that the main cell body links to each other with vice cell body forms the oil storage end, and the one end that vice cell body was kept away from to the main cell body forms the gas storage end, and the oil drain hole sets up in the tank bottom of vice cell body.

The utility model provides an above-mentioned one or more technical scheme in the scroll compressor have one of following technological effect at least: through set up first oil storage chamber in the casing, the second oil storage chamber, and the throttle connection structure in first oil storage chamber of intercommunication and second oil storage chamber, with the oil-out intercommunication of first oil storage chamber and scroll compressor's oil content structure, simultaneously with the oil return passageway intercommunication of second oil storage chamber and scroll compressor, like this, the refrigeration oil through oil content structure separation at first gets into first oil storage chamber and carries out the one-level cooling and step down, the refrigeration oil flows into to the second oil storage intracavity from first oil storage chamber through throttle connection structure again afterwards, the refrigeration oil carries out the secondary cooling and steps down when throttling connection structure. Therefore, the temperature and the pressure of the refrigerant oil entering the second oil storage cavity are greatly reduced, and the refrigerant dissolved in the refrigerant oil is separated out and discharged into the compression cavity of the scroll compressor, so that the amount of the refrigerant flowing back to the oil return channel of the scroll compressor along with the refrigerant oil is reduced, and the refrigeration efficiency of the scroll compressor is effectively improved; and the heat that the refrigeration oil carried after the secondary cooling reduces, and the refrigeration oil backward flow is less to the temperature influence of the inspiratory refrigerant of the suction side from scroll compressor to can effectively maintain the refrigerant density of scroll compressor suction side, avoid scroll compressor volumetric efficiency and cold volume to descend, provide the guarantee for scroll compressor's high-efficient compression.

The utility model discloses another technical scheme is: a refrigeration device is provided, which comprises the scroll compressor.

The utility model provides a refrigeration plant compares with prior art, has following beneficial effect at least: the utility model provides a refrigeration plant, through using foretell scroll compressor, the refrigeration oil after the oil content structure separation in the scroll compressor is through twice cooling step-down back, reentrant second oil storage chamber, flow back to scroll compressor's return channel and lubricate scroll compressor's each friction pair from second oil storage chamber afterwards, and thus, flow back to return channel's refrigeration oil temperature and pressure greatly reduced, the refrigerant volume and the heat that the refrigeration oil backward flow carried reduce, thereby can effectively avoid scroll compressor volumetric efficiency and refrigeration volume to descend, scroll compressor high-efficient compression, make refrigeration plant's refrigeration volume and refrigeration efficiency maintain at higher level all the time, refrigeration plant's refrigerating capacity can optimize.

The utility model discloses another technical scheme is: a vehicle is provided, which comprises the refrigeration equipment.

The utility model provides a vehicle, compared with the prior art, has following beneficial effect at least: the utility model provides a vehicle, through using foretell refrigeration plant, in vehicle refrigeration process, because refrigeration plant's refrigerating output and refrigeration efficiency can maintain higher level all the time to can effectively shorten the inside cooling of vehicle consuming time, the cooling speed of vehicle promotes, and the promotion is experienced with the car.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a cross-sectional view of a prior art scroll compressor;

FIG. 2 is a graph showing typical characteristics of refrigerant oil-refrigerant dissolution in a scroll compressor;

fig. 3 is a cross-sectional view of a scroll compressor according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a fixed scroll of a scroll compressor according to another embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-a housing; 11-suction port; 12-refrigerant outlet; 13-a compression chamber; 14-an aspiration lumen; 15-an oil return channel; 16-a first oil reservoir; 17-a second oil reservoir; 171-oil storage end; 172-gas storage end; 173-oil drain hole; 18-a throttle connection; 19-an exhaust channel; 191-air vent; 20-a compression mechanism; 30-a drive mechanism; 31-an orbiting scroll; 32-a fixed scroll; 321-a mixed fluid outlet; 322-a first groove; 3231-main trough body; 3232-auxiliary tank body; 3233-transition step; 323-a second groove; 324-a third groove; a 40-oil separation structure; 41-oil outlet; 42-oil cannula; 43-oil containment; 431-oil inlet; 432-oil subchamber; 50-throttling structure.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, it is right to combine fig. 1 ~ 4 and embodiment below the utility model discloses further detailed description proceeds. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, 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 specifically limited otherwise.

Reference throughout the specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As shown in fig. 3 and 4, an embodiment of the present invention provides a scroll compressor, which may include, but is not limited to, as shown in fig. 3: a casing 10, an air inlet 11, a compression mechanism 20, a driving mechanism 30, a refrigerant outlet 12, and the like.

The compression mechanism 20 may include, but is not limited to, an orbiting scroll 31, a fixed scroll 32, and an anti-rotation structure, wherein the fixed scroll 32 may include an end plate and a fixed wrap, and the orbiting scroll 31 may include an end plate and an orbiting wrap, and the fixed wrap and the orbiting wrap are engaged with each other, so that a compression chamber 13 of the scroll compressor (i.e., a working chamber of the scroll compressor) is defined between the fixed scroll and the orbiting scroll. The rotation preventing means serves to restrict rotation of orbiting scroll 31 while allowing orbiting scroll 31 to perform a revolving translational motion with respect to fixed scroll 32. The driving mechanism 30 may include, but is not limited to, a motor composed of a stator and a rotor, and a crankshaft, wherein the crankshaft may be integrally rotatable with the rotor, and the crankshaft may be provided at an upper end with an eccentric pin adapted to drive the movable scroll 31, and the rotor drives the movable scroll 31 to rotate by the eccentric pin. The suction port 11 is opened on the casing 10 and connected to a refrigerant supply port of an external working circuit (for example, an outlet of a system evaporator, etc.), a suction chamber 14 is further provided in the casing 10, the suction chamber 14 communicates with the suction port 11 and the compression chamber 13, and a low-pressure refrigerant (working fluid) from the external working circuit (for example, the system evaporator, etc.) of the casing 10 is sucked through the suction port 11 and enters the compression chamber 13 through the suction chamber 14 for compression. An oil separation structure 40 is arranged in the casing 10, a mixed fluid of refrigerant and refrigeration oil discharged from the compression cavity 13 is output to the oil separation structure 40 for oil-gas separation, the refrigerant outlet 12 is arranged on the casing 10, high-pressure refrigerant separated by the oil separation structure 40 is discharged to an external working loop (such as an inlet of a system evaporator) of the scroll compressor through the refrigerant outlet 12, the refrigeration oil separated by the oil separation structure 40 flows into the oil return channel 15 and flows back through the oil return channel 15, and therefore all friction pairs of the scroll compressor are lubricated.

When the scroll compressor works, under the condition that the motor is electrified, the rotor rotates to drive the crankshaft to synchronously rotate, the crankshaft drives the movable scroll 31 to perform rotary translational motion through the eccentric pin, meanwhile, a refrigerant, namely a working fluid enters the air suction cavity 14 through the air suction port 11, the refrigerant is further sucked into the compression cavity 13 from the air suction cavity 14 along with the continuous rotary translational motion of the movable scroll 31, and at the moment, the refrigerant entering the compression cavity 13 is compressed and the pressure is increased. When the refrigerant is compressed to reach a predetermined compression ratio, the refrigerant is discharged from the compression chamber 13, for example, a mixed fluid outlet 321 is formed in the fixed scroll 32, the refrigerant is discharged through the mixed fluid outlet 321, and during the compression of the refrigerant, the refrigerant oil lubricating the friction pair is carried by the refrigerant and enters the compression chamber 13. Therefore, the fluid discharged from the mixed fluid outlet 321 of the fixed scroll 32 is a mixed fluid of the refrigerant and the refrigeration oil, and needs to be processed after being discharged to separate the refrigerant and the refrigeration oil, so that the mixed fluid of the refrigerant and the refrigeration oil is conveyed to the oil separating structure 40 to separate the refrigerant and the refrigeration oil, the separated refrigerant is discharged from the scroll compressor through the refrigerant outlet 12, the separated refrigeration oil flows back through the oil return passage 15, and a friction pair of the scroll compressor is lubricated, thereby realizing the recycling of the refrigeration oil.

In an embodiment of the present invention, as shown in fig. 3, the scroll compressor further includes a throttling connection structure 18 disposed in the casing 10, and a first oil storage chamber 16 and a second oil storage chamber 17 are further disposed in the casing 10, wherein the first oil storage chamber 16 is communicated with an oil outlet 41 of the oil content structure 40, in this embodiment, the first oil storage chamber 16 is disposed below the oil content structure 40 along the gravity direction, and the refrigerant oil directly flows into the first oil storage chamber 16 from the oil outlet 41 of the oil content structure 40 by means of its own gravity. First oil storage chamber 16 is linked together through throttle connection structure 18 and second oil storage chamber 17, second oil storage chamber 17 has oil storage end 171 and gas storage end 172, in this embodiment, oil storage end 171 and gas storage end 172 set up in the relative both ends of second oil storage chamber 17 along the direction of gravity, like this, after the refrigeration oil flowed into second oil storage chamber 17 from first oil storage chamber 16, the refrigeration oil received gravity great, can lean on self gravity to flow to oil storage end 171 and save, the refrigerant that precipitates received gravity less then can flow to gas storage end 172 and save. Further, the oil storage end 171 of the second oil storage chamber 17 is communicated with the oil return channel 15 of the scroll compressor, so that the refrigerant oil flowing into the second oil storage chamber 17 is conveyed to the oil return channel 15 to lubricate a friction pair of the scroll compressor, and the air storage end 172 of the second oil storage chamber 17 is communicated with the compression chamber 13 of the scroll compressor, so that the refrigerant precipitated from the refrigerant oil is conveyed back into the compression chamber 13 of the scroll compressor for cyclic compression.

Specifically, in this embodiment, as shown in fig. 3, an oil inlet and an oil outlet of the throttle connection structure 18 are respectively communicated with the first oil storage chamber 16 and the second oil storage chamber 17, that is, the refrigerant oil in the first oil storage chamber 16 flows into the second oil storage chamber 17 after being throttled and depressurized by the throttle connection structure 18, and the throttle connection structure 18 is arranged to perform the throttle depressurization treatment on the refrigerant oil flowing out of the first oil storage chamber 16, so as to further reduce the pressure of the refrigerant oil flowing into the second oil storage chamber 17 and accelerate the precipitation of the refrigerant dissolved in the refrigerant oil.

The utility model discloses scroll compressor, through set up first oil storage chamber 16 and second oil storage chamber 17 in casing 10, and the throttle connection structure of the first oil storage chamber 16 of intercommunication and second oil storage chamber 17, with the oil-out 41 intercommunication of the oil content structure 40 of first oil storage chamber 16 and scroll compressor, be linked together second oil storage chamber 17 with scroll compressor's oil return passage 15 simultaneously, thus, the refrigeration oil that separates through oil content structure 40 at first gets into first oil storage chamber 16 and carries out the one-level cooling and step down, the refrigeration oil flows into to second oil storage chamber 17 from first oil storage chamber 16 through throttle connection structure 18 again afterwards in, the refrigeration oil carries out the secondary cooling and step down when throttle connection structure 18. According to the general characteristic curve of the refrigeration oil-refrigerant dissolution shown in fig. 2, the solubility of the refrigerant with reduced temperature is reduced, and similarly, the solubility of the refrigerant with reduced pressure is reduced, so that the temperature and the pressure are greatly reduced when the refrigeration oil enters the second oil storage cavity 17, the refrigerant dissolved in the refrigeration oil is separated out and discharged into the compression cavity 13 of the scroll compressor, and thus, the amount of the refrigerant flowing back to the oil return channel 15 of the scroll compressor along with the refrigeration oil is reduced, and the refrigeration efficiency of the scroll compressor is effectively improved; and the heat that the refrigeration oil carried after the secondary cooling reduces, and the refrigeration oil backward flow is less to the temperature influence of the inspiratory refrigerant of the suction side from scroll compressor to can effectively maintain the refrigerant density of scroll compressor suction side, avoid scroll compressor volumetric efficiency and cold volume to descend, provide the guarantee for scroll compressor's high-efficient compression.

The utility model discloses a further embodiment, can also set up throttle structure 50 between oil return passage 15 and the second oil storage chamber 17, like capillary throttle structure etc. for carry out the throttle step-down of more one-levels to the refrigeration oil of following second oil storage chamber 17 exhaust.

In another embodiment of the present invention, as shown in fig. 3, when the gas storage end 172 of the second oil storage chamber 17 is connected to the compression chamber 13, it is specifically linked to the position where the pressure in the compression chamber 13 is equal to or lower than the pressure in the second oil storage chamber 17, thereby ensuring that the pressure in the second oil storage chamber 17 can press out the refrigerant separated out from the refrigerant in the second oil storage chamber 17, thereby making the separated refrigerant flow to the compression chamber 13 of the scroll compressor independently, without setting an extra pressurizing structure to transport the separated refrigerant back to the compression chamber 13, making the utility model discloses an internal structure of the scroll compressor is simpler, and the scroll compressor is easier to process and manufacture.

Specifically, in this embodiment, an exhaust channel 19 for returning the separated refrigerant to the compression cavity 13 is further disposed inside the casing 10, an air outlet of the exhaust channel 19 is connected to the compression cavity 13, specifically, connected to an external portion where the pressure in the compression cavity 13 is equal to or lower than the pressure in the second oil storage cavity 17, and an air inlet of the exhaust channel 19 is connected to the air storage end 172 of the second oil storage cavity 17. In this way, the exhaust passage 19 is provided in the casing 10 to communicate the second oil storage chamber 17 with the compression chamber 13, so that the refrigerant precipitated in the second oil storage chamber 17 is conveyed back to the compression chamber 13 of the scroll compressor for use in circulating refrigeration.

In another embodiment of the present invention, as shown in fig. 3, in this embodiment, a backflow preventing structure (not shown) is disposed in the exhaust hole channel 19 for preventing the fluid in the compression chamber 13 from flowing back to the second oil storage chamber 17, and the backflow preventing structure is disposed in the exhaust hole channel 19, so as to prevent the refrigerant in the compression chamber 13 from flowing into the second oil storage chamber 17 through the exhaust hole channel 19, so as to provide a one-way flow path for the discharge of the refrigerant in the second oil storage chamber 17, and avoid the influence on the normal compression operation of the scroll compressor due to the arrangement of the first oil storage chamber 16 and the second oil storage chamber 17.

Alternatively, in this embodiment, the backflow preventing structure may be a check valve or a check valve, which is opened in one direction toward the side of the compression chamber 13 of the scroll compressor, so as to provide a one-way flow path for discharging the refrigerant in the second oil storage chamber 17.

In this embodiment, the exhaust passage 19 may be a curved passage having at least one curved section, and the exhaust passage 19 having the curved section may reasonably use the area of the curved section to increase the residence time of the refrigerant in the exhaust passage 19, so that the gaseous refrigerant oil mixed with the refrigerant is condensed and flows back to the second oil storage chamber 17. In some specific embodiments, the exhaust passage 19 may be configured as an arc-shaped passage having one bending section, an "S" shaped passage having a plurality of bending sections, or the like, or may be configured as another passage having one or more bending sections, and the specific configuration of the exhaust passage 19 is not limited herein.

In another embodiment of the present invention, as shown in fig. 3, a suction chamber 14 is provided in the casing 10 of the scroll compressor of this embodiment, the suction chamber 14 communicates with the suction port 11 and the compression chamber 13 of the scroll compressor, and the chamber wall of the second oil storage chamber 17 is disposed to abut against the chamber wall of the suction chamber 14, so that, because the low-temperature and low-pressure refrigerant sucked through the suction port 11 flows in the suction cavity 14, the internal temperature of the suction cavity 14 is low, the cavity wall of the second oil storage cavity 17 is arranged to be tightly attached to the cavity wall of the suction cavity 14, the heat of the refrigeration oil in the second oil storage cavity 17 can be partially transferred to the cavity wall of the suction cavity 14, the refrigeration oil in the second oil storage cavity 17 can be cooled, the heat carried by the refrigeration oil is further reduced, therefore, the influence of harmful overheating after the backflow of the refrigeration oil on the density of the refrigerant at the air suction side is further reduced, and the compression efficiency of the scroll compressor is improved.

In another embodiment of the present invention, as shown in fig. 3, the throttle connecting structure 18 is a throttle channel opened in the casing 10, and the throttle channel penetrates the first oil storage chamber 16 and the second oil storage chamber 17, so as to convey the refrigerant oil in the first oil storage chamber 16 to the second oil storage chamber 17. In this embodiment, the throttling channel may be a curved channel having at least one curved section, the refrigerant oil flows into the throttling channel from the first oil storage chamber 16, and when the curved section turns, the refrigerant oil may impact the channel wall, and the local resistance applied to the refrigerant oil during the flow process is increased, so as to achieve the purpose of throttling and depressurizing the refrigerant oil, and reduce the flow rate and pressure of the refrigerant oil entering the second oil storage chamber 17. In some specific embodiments, the throttling channel may be an arc channel having one bending section, an "S" shaped channel having a plurality of bending sections, or the like, or may be another channel having one or more bending sections, and the specific arrangement of the throttling channel is not limited herein.

Optionally, in another embodiment of the present invention, as an alternative to the above-mentioned embodiment, the above-mentioned throttling connection structure 18 can also be a capillary throttling structure, that is, a capillary throttling structure is installed between the first oil storage cavity 16 and the second oil storage cavity 17 to communicate the first oil storage cavity 16 and the second oil storage cavity 17, the capillary throttling structure can also throttle and reduce the pressure of the refrigerant before the refrigerant flows into the second oil storage cavity 17, so as to reduce the pressure and the flow rate of the refrigerant flowing into the second oil storage cavity 17, thereby increasing the precipitation amount of the refrigerant dissolved in the refrigerant, and further reducing the refrigerant amount carried by the refrigerant backflow.

Of course, in some other embodiments, other structures with throttling function can be used for the above-mentioned throttling connection structure 18, and the selection of the throttling connection structure 18 is only an example and is not only limited.

In another embodiment of the present invention, as shown in fig. 3, a movable scroll 31 and a fixed scroll 32 are disposed in a casing 10 of the scroll compressor, the scroll teeth of which are engaged with each other, a driving mechanism 30 of the scroll compressor is drivingly connected to the movable scroll 31, and a motor drives the movable scroll 31 to perform orbital translation relative to the fixed scroll 32, thereby realizing suction and compression of a refrigerant. The oil dividing structure 40 includes an oil dividing housing 43 and an oil dividing tube 42, an oil dividing cavity 432 is formed in the oil dividing housing 43, the oil dividing tube 42 is installed in the oil dividing cavity 432, an oil dividing inlet 431 penetrating the oil dividing cavity 432 is formed in the oil dividing housing 43, and a mixed fluid outlet 321 formed in the fixed scroll 32 communicates with the oil dividing inlet 431, so that a mixed fluid of refrigerant and refrigerant discharged from the compression cavity 13 enters the oil dividing cavity 432 through the oil dividing inlet 431, collides with a cavity wall of the oil dividing cavity 432 and the oil dividing tube 42, and separates the refrigerant from the refrigerant. The oil outlet 41 of the oil dividing structure 40 is opened on the wall of the oil dividing chamber 432, the wall of the first oil storage chamber 16 is connected to the wall of the oil dividing chamber 432, and the oil dividing chamber 432 is communicated with the first oil storage chamber 16 through the oil outlet 41, so that the separated refrigeration oil flows into the first oil storage chamber 16. The oil sub-chamber 432 is also communicated with a refrigerant outlet 12 provided in the casing 10, so that the separated refrigerant can be discharged through the refrigerant outlet 12.

Alternatively, in the present embodiment, as shown in fig. 3, the first oil storage chamber 16, the second oil storage chamber 17 and the throttling connection structure 18 may be disposed in the oil dividing housing 43, specifically, the first oil storage chamber 16 and the second oil storage chamber 17 are disposed below the oil dividing chamber 432 in the gravity direction, a discharge hole 191 is further disposed on the oil dividing housing 43, and the discharge channel 19 is disposed on the fixed scroll 32 and connected to the discharge hole 191, that is, a channel is opened on the fixed scroll 32 to communicate the second oil storage chamber 17 and the compression chamber 13, so as to allow the refrigerant in the second oil storage chamber 17 to flow back, in the present embodiment, a flow path of the refrigerant is shown by a solid arrow in fig. 3. Further, the oil dividing housing 43 is further provided with an oil discharge hole 173, the oil storage end 171 of the second oil storage chamber 17 is communicated with the oil return passage 15 through the oil discharge hole 173 (when the throttling structure 50 is provided between the oil return passage 15 and the second oil storage chamber 17, the oil discharge hole 173 is connected with the throttling structure 50), and the frozen oil is discharged through the oil discharge hole 173 and flows into the oil return passage 15, wherein the flow path of the frozen oil is shown by a dotted arrow in fig. 3 in the embodiment. In this way, the first oil storage chamber 16, the second oil storage chamber 17 and the throttling connection structure 18 are integrally arranged on the oil content structure 40, and during assembly, the oil content structure 40 is integrally installed, and the exhaust hole 191 is connected with the exhaust channel 19 on the fixed scroll disk 32, so that the assembly, disassembly and maintenance are convenient, and the maintenance and management are convenient.

Alternatively, as an alternative to the previous embodiment, in this embodiment, as shown in fig. 4, the first oil storage chamber 16, the second oil storage chamber 17, the throttle connecting structure 18, and the exhaust passage 19 may be disposed on the fixed scroll 32, and specifically may be disposed on an end surface of the fixed scroll 32 facing away from the movable scroll 31 (i.e., an end surface of the fixed scroll 32 facing the oil separating structure 40), so as to avoid the first oil storage chamber 16, the second oil storage chamber 17, the throttle connecting structure 18, and the exhaust passage 19 from affecting the compression chamber 13. Like this, with foretell first oil storage chamber 16, second oil storage chamber 17, throttle connection structure 18 and the integrated setting on quiet whirlpool dish 32 of the exhaust passage 19 of throttle structure 50, under the prerequisite of realizing the multistage cooling step-down to the cryogenic oil, can make full use of scroll compressor's original structure and space, scroll compressor structure is compacter, and space utilization is higher.

In the present embodiment, as shown in fig. 4, when the first oil storage chamber 16, the second oil storage chamber 17, the throttle connecting structure 18, and the exhaust passage 19 are integrally provided on the fixed scroll 32, the first oil storage chamber 16, the second oil storage chamber 17, the throttle connecting structure 18, and the exhaust passage 19 are provided so as to avoid the teeth of the fixed scroll 32 from being turned, and so as to avoid the influence on the motion matching between the fixed scroll 32 and the movable scroll 31.

Specifically, in the present embodiment, the oil dividing housing 43 has a connecting surface (not shown) facing the fixed scroll 32, a first groove 322, a second groove 323, and a third groove 324 are disposed on an end surface of the fixed scroll 32 facing the connecting surface, the connecting surface abuts against the end surface of the fixed scroll 32, the connecting surface and the first groove 322, the second groove 323, and the third groove 324 respectively enclose the first oil storage chamber 16, the second oil storage chamber 17, and the exhaust passage 19, and the throttle connecting structure 18 is disposed between the first groove 322 and the second groove 323. Like this, through setting up oil content shell 43 and make the connection face of oil content shell 43 paste and connect in the terminal surface of quiet whirlpool dish 32, connect the face and be connected with the end face seal laminating of quiet whirlpool dish 32, the terminal surface of the cell wall of first recess 322 supports tightly with connecting the face and forms first oil storage chamber 16, the terminal surface of the cell wall of second recess 323 supports tightly with connecting the face and forms second oil storage chamber 17, the terminal surface of the cell wall of third recess 324 supports tightly with connecting the face and forms exhaust passage 19, rational utilization quiet whirlpool dish 32 and oil content shell 43 take shape first oil storage chamber 16, second oil storage chamber 17 and exhaust passage 19, make the utility model discloses an inner structure is compacter, and scroll compressor's whole volume can reduce, agrees with mutually with scroll compressor's miniaturized design demand.

In the present embodiment, as shown in fig. 3 and 4, the fixed scroll 32 is further provided with a discharge hole 191, the discharge hole 191 is communicated with the compression cavity 13 while bypassing the mixed fluid outlet 321 and the spiral teeth of the fixed scroll 32, the air outlet end of the discharge channel 19 is connected to the discharge hole 191, the refrigerant at the air storage end 172 of the second oil storage cavity 17 enters the discharge channel 19 and then is discharged into the compression cavity 13 through the discharge hole 191, and in the present embodiment, the flow path of the refrigerant is shown by a solid arrow in fig. 3.

In the present embodiment, as shown in fig. 3 and 4, the fixed scroll 32 is further provided with an oil discharge hole 173, the oil discharge hole 173 is connected to the oil return passage 15, and the oil storage end 171 of the second oil storage chamber 17 is connected to the oil return passage 15 through the oil discharge hole 173. Specifically, the second groove 323 comprises a main groove body 3231 and a sub groove body 3232, the sub groove body 3232 is disposed at one end of the main groove body 3231, the depression depth of the main groove body 3231 is greater than that of the sub groove body 3232, an oil storage end 171 is formed at one end of the main groove body 3231 connected to the sub groove body 3232, an air storage end 172 is formed at one end of the main groove body 3231 far away from the sub groove body 3232, and an oil drain hole 173 is disposed at the bottom of the sub groove body 3232. Since the depression depth of the main groove body 3231 is greater than that of the sub groove body 3232, a transition step 3233 is formed at a transition portion between the main groove body 3231 and the sub groove body 3232, and the refrigerant in the main groove body 3231 enters the sub groove body 3232 through the transition step 3233 in an overflow manner and then is discharged through the oil discharge hole 173, in this embodiment, a flow path of the refrigerant oil is shown by a dotted arrow in fig. 3.

Another embodiment of the present invention further provides a refrigeration device (not shown), which includes the above scroll compressor.

The refrigeration plant of this embodiment, through using foretell scroll compressor, the refrigeration oil after the separation of oil content structure 40 flows through first oil storage chamber 16 and throttle connection structure 18 in the scroll compressor, the refrigeration oil gets into second oil storage chamber 17 after two cooling steps-down again, the refrigeration oil flows back to scroll compressor's return oil passageway 15 and lubricates each friction pair to scroll compressor from second oil storage chamber 17 again afterwards, thus, the temperature and the pressure greatly reduced of the refrigeration oil that gets into in the return oil passageway 15, the refrigerant volume and the heat that the refrigeration oil carried reduce, thereby can effectively avoid scroll compressor volumetric efficiency and refrigeration volume to descend, scroll compressor high efficiency compression, make refrigeration plant's refrigeration volume and refrigeration efficiency maintain higher level all the time, refrigeration plant's refrigerating capacity can optimize. Another embodiment of the present invention further provides a vehicle (not shown) including the above-mentioned refrigeration equipment.

The vehicle of this embodiment, through using foretell refrigeration plant, at vehicle refrigeration in-process, because refrigeration plant's refrigeration capacity and refrigeration efficiency can maintain higher level all the time to can effectively shorten the inside cooling of vehicle consuming time, the cooling speed of vehicle promotes, and the promotion is experienced with the car.

It should be noted that, in the present embodiment, the specific type of the vehicle is not limited, for example, the vehicle may be a conventional fuel vehicle, and may also be a new energy vehicle, where the new energy vehicle includes, but is not limited to, a pure electric vehicle, an extended range electric vehicle, a hybrid electric vehicle, a fuel cell electric vehicle, a hydrogen engine vehicle, and the like, and the present embodiment is not particularly limited thereto.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (17)

1. The utility model provides a scroll compressor, includes the casing, and set up in oil content structure in the casing, still be provided with compression chamber and oil return channel in the casing, its characterized in that, scroll compressor still including set up in throttle connection structure in the casing, just still be provided with in the casing with the first oil storage chamber that the oil-out of oil content structure is linked together, and pass through throttle connection structure with the second oil storage chamber that first oil storage chamber is linked together, second oil storage chamber has oil storage end and gas storage end, the oil storage end with oil return channel is linked together, the gas storage end with the compression chamber is linked together.

2. The scroll compressor of claim 1, wherein the gas storage port is in communication with a location where a pressure in the compression chamber is equal to or lower than a pressure in the second oil storage chamber.

3. The scroll compressor of claim 2, wherein an exhaust passage is further provided in the housing, an outlet of the exhaust passage is in communication with a location where the pressure in the compression chamber is equal to or lower than the pressure in the second oil storage chamber, and an inlet of the exhaust passage is in communication with the gas storage end.

4. The scroll compressor of claim 3, wherein: and a backflow prevention structure for preventing the fluid in the compression cavity from flowing backwards is arranged in the exhaust passage.

5. The scroll compressor of claim 4, wherein the backflow prevention structure is a one-way valve or a check valve.

6. The scroll compressor of claim 1, wherein: and an air suction cavity communicated with the compression cavity is further arranged in the machine shell, and the cavity wall of the second oil storage cavity is attached to the cavity wall of the air suction cavity.

7. The scroll compressor of claim 1, wherein: the throttling connecting structure is a throttling channel arranged in the shell, and the throttling channel penetrates through the first oil storage cavity and the second oil storage cavity.

8. The scroll compressor of claim 7, wherein: the throttling channel is a curved channel with at least one curved section.

9. The scroll compressor of claim 1, wherein: the throttling connection structure is a capillary structure.

10. A scroll compressor as claimed in any one of claims 3 to 5, wherein: the scroll compressor is still including set up in quiet whirlpool dish in the casing, the oil content structure includes the oil content shell, first oil storage chamber the second oil storage chamber with throttle connection structure all set up in the oil content shell, be provided with the exhaust hole on the oil content shell, exhaust passage set up in on the quiet whirlpool dish and with the exhaust hole links to each other.

11. A scroll compressor as claimed in any one of claims 3 to 5, wherein: the scroll compressor further comprises a static scroll disk arranged in the casing, and the first oil storage cavity, the second oil storage cavity, the throttling connection structure and the exhaust channel are all arranged on the static scroll disk.

12. The scroll compressor of claim 11, wherein: the oil content structure includes the oil content shell, the oil content shell has the orientation the connection face of quiet whirlpool dish, quiet whirlpool dish orientation be provided with first recess, second recess and third recess on the terminal surface of connection face, connect the face paste in the terminal surface of quiet whirlpool dish, connect the face with first recess the second recess with the third recess encloses respectively and establishes formation first oil storage chamber the second oil storage chamber with exhaust passage, throttle connection structure set up in first recess with between the second recess.

13. The scroll compressor of claim 12, wherein: the static vortex disc is also provided with an exhaust hole communicated with the compression cavity, and the air outlet end of the exhaust channel is connected with the exhaust hole.

14. The scroll compressor of claim 12, wherein: the static scroll disk is also provided with an oil discharge hole communicated with the oil return channel, and the oil storage end is connected with the oil return channel through the oil discharge hole.

15. The scroll compressor of claim 14, wherein: the second recess including the main cell body with set up in the vice cell body of main cell body one end, the sunken degree of depth of main cell body is greater than the sunken degree of depth of vice cell body, main cell body with the one end that vice cell body links to each other forms the oil storage end, main cell body is kept away from the one end of vice cell body forms the air storage end, the oil drain hole set up in the tank bottom of vice cell body.

16. A refrigeration apparatus, characterized by: a scroll compressor comprising any one of claims 1 to 15.

17. A vehicle, characterized in that: comprising the refrigeration appliance of claim 16.

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