CN219454338U - Oil separator and water chilling unit - Google Patents

Abstract

The utility model discloses an oil separator and a water chilling unit, which comprises a shell, a central cylinder, a flow guide component and a pore plate, wherein a first end cover is arranged at the top of the shell, a second end cover is arranged at the bottom of the shell, the central cylinder is connected with the first end cover, an annular space for guiding airflow to flow along the circumferential direction is defined between the inner wall surface of the shell and the central cylinder, an air inlet communicated with the annular space is arranged on the shell, an air outlet communicated with the inner cavity of the central cylinder is arranged on the first end cover, the pore plate is arranged on the inner side of the second end cover, the flow guide component is arranged between the central cylinder and the pore plate, a first port is formed at one end close to the central cylinder, a second port is formed at one end close to the pore plate, the first port is larger than the second port, and the flow guide component extends from the first port to the second port along the height direction. Through the flow guiding function of the flow guiding component, the impact function between the air flows and the impact function of the air flows on the pore plate are weakened, so that the noise of the oil separator is reduced, and the noise value of the unit reaches the standard.

Description

Oil separator and water chilling unit

Technical Field

The utility model is used in the field of refrigerant separation lubricants, and particularly relates to an oil separator and a water chilling unit.

Background

The existing water chilling unit compressor oil separator is mostly of an external structure, and high-pressure steam discharged by the compressor flows in the oil separator in a spiral mode to separate lubricating oil from gas. The orifice plate at the bottom of the oil separator has certain noise reduction effect, but the noise generated by the collision of the airflow and the wall of the separator and the pressure change of the airflow can not be solved.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art and provides an oil separator and a water chilling unit.

The technical scheme adopted for solving the technical problems is as follows:

in a first aspect, an oil separator includes casing, a central section of thick bamboo, water conservancy diversion part and orifice plate, the casing extends along the direction of height, the top of casing is equipped with first end cover, the bottom of casing is equipped with the second end cover, the central section of thick bamboo connect in first end cover, and to second end cover direction extends, the internal face of casing with inject the annular space that the air current flows along circumference between the central section of thick bamboo, be equipped with on the casing with the air inlet of annular space intercommunication, be equipped with on the first end cover with the gas vent of the inner chamber intercommunication of central section of thick bamboo, the orifice plate set up in the second end cover is inboard, the water conservancy diversion part set up in between the central section of thick bamboo with the orifice plate, the water conservancy diversion part is being close to the one end of central section of thick bamboo forms first port, the water conservancy diversion part is being close to the one end of orifice plate forms the second port, first port is greater than the second port, the water conservancy diversion part is followed highly direction by first port extends to the second port.

With reference to the first aspect, in certain implementations of the first aspect, an inner wall surface of the flow guiding member is a tapered surface extending from the first port to the second port.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a first port of the flow guiding component is flush with a bottom end of the central cylinder in a height direction.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the second port of the flow guiding component is blocked before extending to the orifice plate, and a gap is left between the second port of the flow guiding component and the orifice plate.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, a first port of the flow guiding component is engaged with an inner wall surface of the housing, a center line of a second port of the flow guiding component coincides with a center line of the central cylinder, and an inner diameter of the second port of the flow guiding component is equal to an inner diameter of the central cylinder.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, an edge of the first port of the flow guiding component is welded to an inner wall surface of the housing, and an outer side of the second port of the flow guiding component is provided with an outwardly extending bracket, and the bracket is welded to the inner wall surface of the housing.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, an oil storage cavity is formed between the orifice plate and the second end cover, and an oil drain hole is provided on the housing or the second end cover.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the air inlet is introduced into the annular space at an end of the housing near the first end cover in a tangential direction.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, the hole plate is provided with oil passing holes, and the oil passing holes are distributed in a region where the hole plate and the second port are staggered.

In a second aspect, a water chiller includes an oil separator according to any implementation of the first aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the technical scheme, after the high-pressure gas discharged by the compressor enters the oil separator, the high-pressure gas is restrained by the outer wall surface of the inner cavity of the shell and the central cylinder, the linear motion is converted into the circular motion along the annular space, the high-pressure gas moves downwards under the action of gravity while moving around the central cylinder, most of rotating gas moves downwards in a spiral manner along the axial direction, the gas downwards passes through the bottom of the central cylinder and then enters the area of the flow guide part, oil-gas separation is performed under the guidance of the flow guide part, lubricating oil is recovered through the pore plate, the upper air flow is blocked by the pore plate, the air flow can be prevented from driving the oil surface to rotate, noise is avoided, and the gas upwards passes through the inside of the central cylinder and is discharged. Meanwhile, through the diversion effect of the diversion component, the impact effect between the airflows and the impact effect of the airflows on the pore plate are weakened, so that the noise of the oil separator is reduced, and the noise value of the unit reaches the standard.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of one embodiment of an oil separator of the present utility model;

FIG. 2 is a schematic cross-sectional view at A-A of FIG. 1;

FIG. 3 is a schematic view of the flow directing member of one embodiment shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view at B-B in FIG. 1.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

In which fig. 1 shows a reference direction coordinate system of an embodiment of the present utility model, and the embodiment of the present utility model is described below with reference to the directions shown in fig. 1.

In the installation site, there is an increasing demand for reducing noise of the compressor oil separator of the water chiller from the health of the daily manager, and measures for implementing a sound insulating material are taken as countermeasures. Noise is generated by vibration of the surface material, and in the oil separator, noise generated when the oil separator is operated is considered to be reduced as much as possible in design and production because noise is generated by collision of refrigerant gas against each position. For this reason, there are schemes of changing the cylinder size of the oil separator, lengthening the center baffle of the oil separator, changing the position of the bottom orifice plate opening, and the like, but the noise reduction effect is not obvious. For particularly noisy units, external mufflers are considered for noise reduction. In the previous noise reduction scheme, no changes were made to the structure of the oil separator.

The measure of the sound-insulating material is implemented, but the measure is very labor-intensive and expensive, and is not practical. The method for changing the size of the oil separator cylinder and changing the position of the opening of the bottom pore plate has certain noise reduction effect, but the effect is not obvious, and noise can be increased after the oil separator cylinder exceeds a certain range. The lengthened oil content center baffle has no noise reduction effect. The external muffler increases the cost of the unit.

The present embodiment of the utility model provides an oil separator, which mainly reduces impact between air flows and impact of air flow to an orifice plate by a flow guiding component, thereby reducing noise of the oil separator and maintaining efficiency of the oil separator on the premise of reducing noise.

Referring to fig. 1 and 2, the oil separator includes a housing 100, a central cylinder 200, a flow guide member 300, and an orifice 400, wherein the housing 100 extends in a height direction, a first end cap 101 is provided at a top of the housing 100, a second end cap 102 is provided at a bottom of the housing 100, the central cylinder 200 is connected to the first end cap 101 and extends in a direction of the second end cap 102, an annular space for guiding an airflow to flow in a circumferential direction is defined between an inner wall surface of the housing 100 and the central cylinder 200, an air inlet 103 communicating with the annular space is provided on the housing 100, an air outlet 104 communicating with an inner cavity of the central cylinder 200 is provided on the first end cap 101, the orifice 400 is provided inside the second end cap 102, the flow guide member 300 is provided between the central cylinder 200 and the orifice 400, the flow guide member 300 forms a first port 301 at an end near the central cylinder 200, the flow guide member 300 forms a second port 302 at an end near the orifice 400, the first port 301 is larger than the second port 302, and the flow guide member 300 extends from the first port 301 to the second port 302 in the height direction.

In the technical scheme of the utility model, after the high-pressure gas discharged by the compressor enters the oil separator, the high-pressure gas is restrained by the outer wall surface of the inner cavity of the shell 100 and the central cylinder 200, and is converted from linear motion to circular motion along an annular space, and is downwards moved by gravity while moving around the central cylinder 200, most of the rotating gas is downwards spirally moved along the axis, the gas downwards passes through the bottom of the central cylinder 200 and enters the area of the flow guide part 300, oil-gas separation is carried out under the guidance of the flow guide part 300, lubricating oil is recovered through the orifice plate 400, and the upper air flow is blocked by the orifice plate 400, so that the air flow can be prevented from driving the oil surface to rotate, noise is avoided, and the air is upwards discharged through the inside of the central cylinder 200. Meanwhile, through the flow guiding function of the flow guiding component 300, the impact function between the airflows and the impact function of the airflows on the orifice plate 400 are weakened, so that the noise of the oil separator is reduced, and the noise value of the unit reaches the standard.

The innovation point of the utility model is that the flow guide component 300 is added in the oil separator, and the impact between airflows and the impact of airflows on the pore plate 400 are reduced by the flow guide component 300, so that the noise of the oil separator is reduced, and the size of the flow guide component 300 is determined by the size of the oil separator, so that the utility model has certain applicability.

The flow guiding member 300 has a shape of a closed end extending from the first port 301 to the second port 302, and the flow guiding member 300 may extend from the first port 301 to the second port 302 with a curved surface or a tapered surface, for example, in some embodiments, referring to fig. 2 and 3, the flow guiding member 300 is made by curling a plate material along the rotation direction of the air flow, and the inner wall surface of the flow guiding member 300 is a tapered surface extending from the first port 301 to the second port 302.

Wherein, referring to fig. 2, the first port 301 of the flow directing member 300 is flush with the bottom end of the central cylinder 200 in the height direction. The first port 301 of the flow guiding member 300 is engaged with the inner wall surface of the housing 100, the center line of the second port 302 of the flow guiding member 300 coincides with the center line of the center cylinder 200, and the inner diameter of the second port 302 of the flow guiding member 300 is equal to the inner diameter of the center cylinder 200.

Through the structural design, the fluid simulation is carried out by combining SOLIDWORKS Flow Simulation, the maximum noise before the flow guiding component 300 is increased to 82.55dB, and the maximum noise after the flow guiding component 300 is increased to 70.7dB. The noise is reduced by 11.85dB, and the noise reduction ratio is 14.4%. The effect is obvious.

Referring to fig. 2, the second port 302 of the flow guiding member 300 is closed before extending to the orifice plate 400, a gap is left between the second port 302 of the flow guiding member 300 and the orifice plate 400, a gap is left between the flow guiding member 300 and the orifice plate 400 for the lubricating oil to pass through, and the gap is not too large to affect the efficiency of the oil filter and the generation of excessive noise. Simulations have found that some of the oil and gas mixture enters the gap between the baffle 300 and the housing 100, affecting the efficiency of the oil separator, and the escape of the mixture can be reduced by reducing the gap distance between the baffle 300 and the orifice 400.

In some embodiments, referring to fig. 2 and 3, the edge of the first port 301 of the flow guiding component 300 is welded to the inner wall surface of the housing 100, the diameter of the first port 301 of the flow guiding component 300 is equal to the inner diameter of the housing 100, the outer side of the second port 302 of the flow guiding component 300 is provided with an outwardly extending bracket 303, the bracket 303 is welded to the inner wall surface of the housing 100, and the flow guiding component 300 is fixed inside the housing 100 by welding, so that noise generated by collision between the flow guiding component 300 and the housing 100 is avoided.

Referring to fig. 1, 2 and 4, an oil storage cavity is formed between the orifice plate 400 and the second end cover 102, an oil drain hole 105 is formed in the housing 100 or the second end cover 102, lubricating oil is recovered into the oil storage cavity through the orifice plate 400 and is discharged through the oil drain hole 105, and the orifice plate 400 covers the top of the oil storage cavity, so that air flow can be prevented from driving the oil surface to rotate, and noise is avoided.

Further, referring to fig. 4, the hole plate 400 is provided with oil passing holes 401, the oil passing holes 401 are distributed in the area where the hole plate 400 is staggered from the second port 302, and oil-gas separated lubricating oil passes through the gap between the flow guiding component 300 and the hole plate 400, reaches the area staggered from the second port 302, and passes through the oil passing holes 401 in the area. In this embodiment, the oil passing hole 401 is offset from the second port 302 of the flow guiding member 300, so that noise generated by the airflow striking the oil passing hole 401 can be avoided.

Referring to fig. 1 and 2, the gas inlet 103 is introduced into the annular space at one end of the housing 100 near the first end cover 101 in a tangential direction, so that high-pressure gas entering the annular space from the gas inlet 103 can be quickly converted from linear motion to circumferentially running along the annular space, and the oil-gas separation effect is improved.

The embodiment of the utility model also provides a water chilling unit, which comprises the oil separator in any embodiment.

In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and these equivalent modifications or substitutions are intended to be included in the scope of the present utility model as defined in the claims.

Claims (10)

1. The utility model provides an oil separator, its characterized in that includes casing, a central section of thick bamboo, water conservancy diversion part and orifice plate, the casing extends along the direction of height, the top of casing is equipped with first end cover, the bottom of casing is equipped with the second end cover, a central section of thick bamboo connect in first end cover, and to the direction of second end cover extends, the internal face of casing with be limited between the central section of thick bamboo and guide the annular space that the air current flows along circumference, be equipped with on the casing with the air inlet of annular space intercommunication, be equipped with on the first end cover with the gas vent of the inner chamber intercommunication of a central section of thick bamboo, the orifice plate set up in the second end cover is inboard, water conservancy diversion part set up in between a central section of thick bamboo with the orifice plate, water conservancy diversion part is being close to the one end of a central section of thick bamboo forms first port, water conservancy diversion part is being close to one end of orifice plate forms the second port, first port is greater than the second port, water conservancy diversion part extends to by first port to the second port along the direction of height.

2. The oil separator of claim 1, wherein the inner wall surface of the flow directing member is a tapered surface extending from the first port to the second port.

3. The oil separator of claim 1 wherein the first port of the baffle member is flush with the bottom end of the central tube in the height direction.

4. The oil separator of claim 1 wherein the second port of the baffle member is blocked prior to extending to the orifice plate, a gap being left between the second port of the baffle member and the orifice plate.

5. The oil separator of claim 1, wherein the first port of the flow directing member engages the inner wall surface of the housing, the centerline of the second port of the flow directing member coincides with the centerline of the central cylinder, and the second port of the flow directing member has an inner diameter equal to the inner diameter of the central cylinder.

6. The oil separator of claim 1, wherein an edge of the first port of the flow directing member is welded to an inner wall surface of the housing, and an outer side of the second port of the flow directing member is provided with an outwardly extending bracket welded to the inner wall surface of the housing.

7. The oil separator of claim 1, wherein an oil storage chamber is formed between the orifice plate and the second end cap, and an oil drain hole is formed in the housing or the second end cap.

8. The oil separator of claim 1 wherein said air inlet is tangentially directed into said annular space at an end of said housing adjacent said first end cap.

9. The oil separator of claim 1, wherein the orifice plate is provided with oil passing holes, and the oil passing holes are distributed in the area where the orifice plate is staggered from the second port.

10. A chiller plant comprising an oil separator as claimed in any one of claims 1 to 9.