CN215930213U - Oil separator and heat exchange system - Google Patents

Abstract

The present disclosure relates to an oil separator and a heat exchange system. The oil separator comprises a separation barrel body and an exhaust pipe arranged in the separation barrel body, wherein the exhaust pipe is provided with a first opening and is arranged at the position of the first opening, the guide part forms a guide window with the first opening, the guide part is provided with an inclined guide surface, and the outer end of the guide surface protrudes out of the outer wall of the exhaust pipe. According to the oil separator and the heat exchange system, the first opening and the corresponding flow guide piece are arranged on the exhaust pipe to form the flow guide window, so that oil drops can be formed on the flow guide surface when an oil-gas mixture entering the exhaust pipe flows through the flow guide window, oil separation can be further performed, the separation effect of the oil separator is improved, the purity of a refrigerant is improved, and the heat exchange effect of the system is improved.

Description

Oil separator and heat exchange system

Technical Field

The utility model relates to the technical field of refrigeration, in particular to an oil separator and a heat exchange system.

Background

With the continuous development of heat exchange technology, heat exchange systems are widely applied to various fields such as industrial production, office, household and the like, such as air conditioning systems. The operation of an air conditioning system typically requires a compressor to power the circulation of a refrigerant. In the related art, refrigerant of some air conditioning systems flows through the compressor, and lubricating oil of the compressor enters the refrigerant circulating system along with the refrigerant, and the inflow of the lubricating oil has an adverse effect on the heat exchange effect of the air conditioning systems.

SUMMERY OF THE UTILITY MODEL

According to a first aspect of an embodiment of the present invention, an oil separator is provided, which includes a separation cylinder, and an exhaust pipe disposed in the separation cylinder and located in the separation cylinder, wherein the exhaust pipe is provided with a first opening and a flow guide member disposed at the first opening, the flow guide member and the first opening form a flow guide window, the flow guide member has an inclined flow guide surface, and an outer end of the flow guide surface protrudes out of an outer wall of the exhaust pipe.

In some embodiments, the first opening is disposed obliquely upward from the lower end of the exhaust pipe, the oblique direction of the first opening is opposite to the rotation direction of the airflow in the exhaust pipe, the flow guide surface extends from the first opening to the outer end of the flow guide surface, and the extension direction of the flow guide surface is consistent with the rotation direction of the airflow.

In some embodiments, the first openings are inclined at an angle ranging from 5 ° to 20 °.

In some embodiments, the first opening is disposed in an upper portion of the exhaust pipe; and/or the presence of a gas in the gas,

the exhaust pipe is provided with a plurality of second openings, and the second openings are positioned above the first openings; and/or the presence of a gas in the gas,

the exhaust pipe is provided with a plurality of first openings, and a flow guide piece is correspondingly arranged at each first opening; and/or the presence of a gas in the gas,

the oil separator comprises an external pipe, the external pipe is correspondingly arranged at the outer end of the exhaust pipe and communicated with the exhaust pipe, and the thickness of the external pipe is larger than that of the exhaust pipe.

In some embodiments, the exhaust pipe comprises at least two spliced pipe portions, the side walls of the at least two spliced pipe portions are spliced together to form the exhaust pipe, a splicing seam extending along the length direction of the exhaust pipe is formed at the splicing position, the splicing seam extends obliquely along the direction from the inside of the exhaust pipe to the outside of the exhaust pipe, and the extending direction of the splicing seam is opposite to the rotating direction of the airflow in the exhaust pipe.

In some embodiments, an oil collecting cavity is arranged outside the exhaust pipe, and oil drops formed on the flow guide surface can flow into the oil collecting cavity from the outer end of the flow guide surface.

In some embodiments, the exhaust pipe is sleeved with a sleeve, the bottom of the sleeve is connected with the outer wall of the exhaust pipe, and the oil collecting cavity is formed outside the exhaust pipe.

In some embodiments, the oil separator includes an oil drain in communication with the oil collection cavity to drain oil collected within the oil collection cavity.

In some embodiments, the inlet end of the oil drain pipe is connected with the outer side wall of the oil collecting cavity, and the distance between the inlet end of the oil drain pipe and the bottom of the oil collecting cavity is less than or equal to 5 cm; and/or the presence of a gas in the gas,

the oil discharge pipe is bent, and the outlet end of the oil discharge pipe is positioned in the orthographic projection of the exhaust pipe; and/or the presence of a gas in the gas,

the oil discharge pipe comprises an outlet section extending transversely, an outlet end of the oil discharge pipe is formed at the outer end of the outlet section, the outlet end extends outwards along the direction from bottom to top to form an inclined outlet end face, and the inclination angle of the outlet end face is 30-45 degrees.

According to a second aspect of embodiments of the present invention there is provided a heat exchange system comprising an oil separator as described above.

The above-mentioned embodiment of this application provides oil separator and heat transfer system, through set up first trompil and corresponding water conservancy diversion spare on the blast pipe in order to form the water conservancy diversion window for the oil-gas mixture who gets into the blast pipe can form oil on the water conservancy diversion face when flowing through the water conservancy diversion window, can further carry out the oil separation, improves oil separator's separation effect, improves the purity of refrigerant, thereby improves the heat transfer effect of system.

Drawings

FIG. 1 is a schematic top view of an oil separator in accordance with an exemplary embodiment of the present application;

FIG. 2 is a side view of the oil separator of FIG. 1;

FIG. 3 is a cross-sectional view of the oil separator of FIG. 2 taken along section line A-A;

FIG. 4 is a cross-sectional view from another perspective of the oil separator of FIG. 2;

FIG. 5 is an enlarged schematic view at B of FIG. 4;

FIG. 6 is a schematic cross-sectional view of an exhaust pipe according to an exemplary embodiment of the present application;

FIG. 7 is a perspective view of a spliced tube portion of an exhaust pipe;

FIG. 8 is a side view of the spliced pipe section shown in FIG. 7;

FIG. 9 is a cross-sectional view taken along section line C-C shown in FIG. 8.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise specified, "front", "back", "lower" and/or "upper", "lower", "left", "right", and the like are for ease of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item identified as preceding "comprises" or "comprising" covers the element or item identified as following "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The following describes embodiments of the present invention in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

In the case where oil (e.g., lubricating oil of a compressor) is mixed in a refrigerant of an air conditioning system, in the related art, an oil separator is provided to separate the oil in the refrigerant, so as to improve the heat exchange effect of the refrigerant. For the oil separating effect who improves oil separator, this application provides an oil separator, it includes the separation barrel, locates the separation barrel is located blast pipe in the separation barrel, first trompil has been seted up and has been located to the blast pipe the water conservancy diversion spare of first trompil department, the water conservancy diversion spare with first trompil forms the water conservancy diversion window, the water conservancy diversion spare has the water conservancy diversion face of slope, the outer end protrusion of water conservancy diversion face in outside the outer wall of blast pipe.

According to the oil separator, the first opening and the corresponding flow guide piece are arranged on the exhaust pipe to form the flow guide window, so that oil drops can be formed on the flow guide surface when an oil-gas mixture entering the exhaust pipe flows through the flow guide window, oil separation can be further performed, the separation effect of the oil separator is improved, the purity of a refrigerant is improved, and the heat exchange effect of a system is improved.

The following description of the oil separator provided in the present application will be made in conjunction with the accompanying drawings. FIG. 1 is a schematic top view of an oil separator 100 in accordance with an exemplary embodiment of the present application. Referring to fig. 1, and as necessary in conjunction with fig. 2-9, the oil separator 100 includes a separation cylinder 10. The separation cylinder 10 has a side wall 12 and top and bottom walls 11 and 13. The oil separator 100 includes an inlet pipe 50 provided in the side wall 12 of the separation cylinder 10 and an outlet pipe 20 provided in the top wall 11 of the separation cylinder 10 and located in the separation cylinder 10. A separation space 1001 is formed inside the separation cylinder 10. An air inlet corresponding to the air inlet pipe 50 is formed in the side wall 12 of the separation cylinder 10, so that the air inlet pipe 50 is disposed corresponding to the air inlet to communicate the air inlet pipe 50 with the separation space 1001, and a refrigerant air flow (hereinafter referred to as an air flow) mixed with oil (such as lubricating oil) is sent into the separation space. The top wall of the separation cylinder 10 is opened with a vent hole corresponding to the vent pipe 20, so that the air flow in the separation space 1001 enters the vent pipe 20 from the vent pipe inlet at the lower end of the vent pipe 20 and flows out through the vent pipe 20. The lower part or bottom of the interior of the separation cylinder 10 is provided with an oil storage space for collecting the separated liquid oil, and is further provided with an oil outlet pipe communicated with the oil storage space to discharge the liquid oil collected in the oil storage space (for example, to a compressor again). In this oil separator 100, the air flow entering the separation space 1001 from the intake pipe 50 forms a whirling air flow, and during the whirling of the air flow, a part of oil droplets mixed in the refrigerant is separated by centrifugal action and flows to the oil storage space below. The refrigerant then enters the discharge pipe 20 and is rotated upward to be discharged out of the separation space 1001.

The inventor(s) have found that, after the air flow entering the separation space from the air inlet pipe rotates and separates in the separation space in the related art, a part of oil drops still remain to the air outlet pipe along with the separated refrigerant to be discharged upwards. Further research by the inventor(s) finds that during the rotating separation process in the separation space, the separation effect is better for oil drops with larger oil drop size (for example, the diameter of the oil drop is larger than 10 micrometers), and the separation effect is less ideal for oil drops with smaller oil drop size (for example, the diameter of the oil drop is smaller than 10 micrometers).

Based on this, in the oil separator 100 provided in the present application, the exhaust pipe 20 is provided with the first opening 21 and the flow guide 22 disposed at the first opening 21, the flow guide 22 and the first opening 21 form a flow guide window, the flow guide 22 has the inclined flow guide surface 221, the outer end 2211 of the flow guide surface 221 protrudes out of the outer wall of the exhaust pipe 20 (as shown in fig. 7 to 9), that is, the outer end 2211 of the flow guide surface 221 is located outside the orthographic projection area (i.e., the projection in the length direction of the exhaust pipe) of the outer wall of the exhaust pipe.

The swirling airflow flowing into the exhaust pipe 20 is an airflow that has undergone primary oil separation in a separation space outside the exhaust pipe 20. The guide window is arranged in the exhaust pipe 20, so that secondary oil separation can be realized, more oil drops (especially oil drops with smaller oil drop size, such as oil drops with the oil drop diameter smaller than 10 micrometers) can be separated, and the oil separation effect of the oil separator is improved.

Referring to fig. 1 to 4, in some embodiments, the air inlet pipe 50 is disposed along a horizontal direction or substantially along a horizontal direction, and the air outlet pipe 20 is disposed along a vertical direction or substantially along a vertical direction. The central axis of the intake duct 50 is arranged along the tangential direction of the separation cylinder 10. Alternatively, the inner wall of the air inlet pipe 50 on the side away from the air outlet pipe is tangent to the inner wall of the separation cylinder 10, so that the airflow entering the separation cylinder 10 does not collide with the inner wall of the separation cylinder 10 to form a rotating airflow. The rotational direction of the rotational airflow formed after the airflow enters the separation space 1001 from the intake duct 50 coincides with the rotational direction of the airflow entering the exhaust duct 20. For example, as shown in fig. 3, the air inlet opening of the air inlet pipe 50 is directed vertically inward from the paper, and the rotational direction of the rotational air flow formed after the air inlet pipe 50 enters the separation space 1001 is counterclockwise as shown by an arrow 101 in the drawing, when viewed from the bottom to the top.

It is to be understood that the exhaust pipe 20 described herein is located in the separation cylinder 10, and it is understood that other parts than the part connected to the separation cylinder 10 are located in the separation space 1001 of the separation cylinder 10.

It should be noted that in some embodiments, the flow guiding surface 221 is a smooth curved surface to facilitate the flow of the air flow, and reduce the resistance to the air flow passing through the flow guiding window.

It should be noted that the exhaust pipe 20 is provided with a plurality of first openings 21, and a flow guide member 22 is correspondingly disposed at each first opening 21. Alternatively, the plurality of first openings 21 are uniformly arranged in the circumferential direction of the exhaust pipe 20. In addition, in other embodiments, a part of the first opening may not be provided with a flow guide, which is not limited in the present application.

In some embodiments, the first opening 21 is disposed obliquely upward from the lower end of the exhaust pipe 20, the oblique direction of the first opening 21 is opposite to the rotation direction of the airflow in the exhaust pipe 20, and the flow guiding surface 221 extends from the first opening 21 to the outer end 2211 thereof, the extending direction of the flow guiding surface 221 is the same as the rotation direction of the airflow, so as to facilitate the rotation airflow in the exhaust pipe 20 to flow out from the flow guiding window to the outside of the exhaust pipe 20.

The inventors have found that, in some embodiments, when the inclination angle β of the first opening 21 is set to any one of the values of 5 ° to 20 °, the oil separation effect of the corresponding baffle 22 is better. Referring to fig. 8, the inclination angle β is defined as an angle between a longitudinal direction of the first opening 21 and a central axis of the exhaust pipe 20. Accordingly, the first opening 21 has two opposite hole sides in the width direction thereof, and the guide member 22 may be connected to the opposite lower hole side.

Further, the inventors (or the inventors) have found, through studies, that the oil separation effect of the exhaust pipe 20 and the entire oil separator is more excellent by providing the first opening 21 in the upper portion of the exhaust pipe 20, that is, in the upper half portion of the exhaust pipe 20.

Further, in some embodiments, the exhaust pipe 20 is provided with a plurality of second openings 23, and the second openings 23 are located above the first openings 21, so that the airflow flowing out of the exhaust pipe 20 from the first openings 21 flows into the exhaust pipe 20.

Further, in some embodiments, the oil separator 100 includes an external connection pipe 60, the external connection pipe 60 is correspondingly disposed at an outer end of the exhaust pipe 20 (which may be understood as an upper end of the exhaust pipe 20) and is communicated with the exhaust pipe 20, and a thickness of the external connection pipe 60 is greater than a thickness of the exhaust pipe 20. In some embodiments, the thickness of the wall of the exhaust pipe 20 is less than or equal to 2 mm.

In some embodiments, exhaust duct 20 may be spliced using two or more duct sections to facilitate manufacturing.

Referring to fig. 2 and 6, the exhaust duct 20 includes two spliced duct portions 201, the sidewalls of the two spliced duct portions 201 are spliced together to form the exhaust duct 20, and a splice seam 202 extending along the length direction of the exhaust duct 20 is formed at the spliced portion.

In some embodiments, the splice seam 202 extends obliquely in a direction along the interior of the exhaust duct 20 and out of the exhaust duct 20, and the splice seam 202 extends in a direction opposite to the direction of rotation of the airflow within the exhaust duct 20 to reduce the effect of the splice on the airflow.

It should be noted that in other embodiments, the splice seam may not be arranged in an obliquely extending manner. Exhaust pipes comprising more spliced pipe sections may also be spliced in a similar manner as described above. Further, the exhaust duct 20 may be integrally formed without being formed by splicing.

Further, in some embodiments, an oil collecting cavity 2001 is disposed outside the exhaust pipe 20, and oil droplets formed on the flow guide surface 221 can flow into the oil collecting cavity 2001 from the outer end of the flow guide surface 221.

In some embodiments, the baffle 22 also has a baffle end face 222 adjacent the outer end 2211 of the baffle 221, from which oil droplets may specifically flow or drip into the oil collection chamber 2001.

In some embodiments, a sleeve 40 is sleeved outside the exhaust pipe 20, the bottom of the sleeve 40 is connected with the outer wall of the exhaust pipe 20, and an oil collecting cavity 2001 is formed outside the exhaust pipe 20.

Specifically, in some embodiments, the sleeve 40 is sleeved on the entire area outside the sidewall of the gas discharge pipe 20 to prevent the gas flow in the separation space 1001 from flowing from the outside of the sleeve 40 to the gas discharge pipe 20 to affect the oil separation effect.

In some embodiments, a deflector ring 41 is provided around the sleeve 40. The deflector 41 may be a ring of deflectors disposed around the outer periphery of the sleeve 40 to prevent oil collected on the outer wall of the sleeve 40 from being carried by the air flow into the exhaust duct 20 as it flows vertically down the sleeve 40 to the lower end of the sleeve.

Further, in some embodiments, the oil separator 100 includes an oil drain 30, the oil drain 30 communicating with the oil collection chamber 2001 to drain oil collected within the oil collection chamber 2001.

In some embodiments, the inlet end 301 of the oil drain pipe 30 is connected to the outer sidewall of the oil collection chamber 2001, and the distance between the inlet end 301 of the oil drain pipe 30 and the bottom of the oil collection chamber 2001 is less than or equal to 5cm, which facilitates better outflow of oil from the oil collection chamber 2001.

In some embodiments, the oil drain tube 30 is bent, such as substantially a letter "C" shaped bend as shown in fig. 4 and 5. The outlet end 302 of the oil drain pipe 30 is located in the orthographic projection of the exhaust pipe 20 so that the outlet of the oil drain pipe 30 is located in a low static pressure region before the lower end air flow inlet of the exhaust pipe 20, so that the oil in the oil collection chamber 2001 can better flow out.

In some embodiments, the oil drain pipe 30 includes a transversely extending outlet section 31, an outer end of the outlet section 31 is formed with an outlet end 302 of the oil drain pipe 30, in a bottom-to-top direction, the outlet end 302 extends outward to form an inclined outlet end face 3021,

in some embodiments, the outlet end faces 3021 are in the same plane, inventors) found that the outlet end face 3021 has an inclination angle of 30 ° to 45 ° so that the oil in the oil discharge pipe 30 can better flow out from the constricted lower end, and the upper end of the outlet end face has a certain shielding effect to reduce the influence of the air flow on the flow of oil droplets out of the oil discharge pipe 30. It is understood that the angle of inclination of the outlet end face 3021 can be understood as the angle of the inclined end face 3021 relative to the vertical, such as the angle α shown in fig. 5.

The present application further provides a heat exchange system, such as an air conditioning system. The heat exchange system includes an oil separator 100 as described above, as well as a compressor, heat exchanger, and the like. The inlet pipe 50 of the oil separator 100 communicates with the outlet port of the compressor to separate the refrigerant flowing out of the compressor. The compressor referred to herein may, in some embodiments, be a screw compressor.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides an oil separator, its characterized in that, it includes the separation barrel, locates the separation barrel is located blast pipe in the separation barrel, the blast pipe has seted up first trompil and has located the water conservancy diversion spare of first trompil department, the water conservancy diversion spare with first trompil forms the water conservancy diversion window, the water conservancy diversion spare has the water conservancy diversion face of slope, the outer end protrusion of water conservancy diversion face in outside the outer wall of blast pipe.

2. The oil separator of claim 1, wherein said first opening is inclined upwardly from a lower end of said discharge pipe, said first opening being inclined in a direction opposite to a rotational direction of an air flow in said discharge pipe, said deflector surface extending from said first opening to an outer end of said deflector surface, said deflector surface extending in a direction coincident with said rotational direction of said air flow.

3. An oil separator as set forth in claim 2 wherein said first openings are inclined at an angle in the range of 5 ° to 20 °.

4. An oil separator as set forth in claim 1 wherein said first opening is provided in an upper portion of said discharge pipe; and/or the presence of a gas in the gas,

the exhaust pipe is provided with a plurality of second openings, and the second openings are positioned above the first openings; and/or the presence of a gas in the gas,

the exhaust pipe is provided with a plurality of first openings, and a flow guide piece is correspondingly arranged at each first opening; and/or the presence of a gas in the gas,

the oil separator comprises an external pipe, the external pipe is correspondingly arranged at the outer end of the exhaust pipe and communicated with the exhaust pipe, and the thickness of the external pipe is larger than that of the exhaust pipe.

5. The oil separator of claim 1, wherein the exhaust pipe comprises at least two spliced pipe sections, wherein the sidewalls of the at least two spliced pipe sections are spliced together to form the exhaust pipe and form a splice seam extending along the length of the exhaust pipe at the splice, wherein the splice seam extends in a direction that is inclined along the interior of the exhaust pipe toward the exterior of the exhaust pipe, and wherein the splice seam extends in a direction opposite to the direction of rotation of the air flow within the exhaust pipe.

6. The oil separator of any one of claims 1 to 5, wherein an oil collection chamber is provided outside the exhaust pipe, and oil droplets formed on the flow guide surface are capable of flowing into the oil collection chamber from an outer end of the flow guide surface.

7. The oil separator of claim 6, wherein a sleeve is sleeved outside the exhaust pipe, the bottom of the sleeve is connected with the outer wall of the exhaust pipe, and the oil collecting cavity is formed outside the exhaust pipe.

8. The oil separator of claim 6 including an oil drain in communication with said oil collection chamber for draining collected oil from said oil collection chamber.

9. The oil separator of claim 8, wherein the inlet end of the oil drain pipe is connected to the outer sidewall of the oil collection chamber, and the distance between the inlet end of the oil drain pipe and the bottom of the oil collection chamber is less than or equal to 5 cm; and/or the presence of a gas in the gas,

the oil discharge pipe is bent, and the outlet end of the oil discharge pipe is positioned in the orthographic projection of the exhaust pipe; and/or the presence of a gas in the gas,

the oil discharge pipe comprises an outlet section extending transversely, an outlet end of the oil discharge pipe is formed at the outer end of the outlet section, the outlet end extends outwards along the direction from bottom to top to form an inclined outlet end face, and the inclination angle of the outlet end face is 30-45 degrees.

10. A heat exchange system, characterized in that it comprises an oil separator according to any one of claims 1 to 9.

Images