阅读说明：本技术 油分离器、换热器及空调 (Oil separator, heat exchanger and air conditioner ) 是由 王铁强 胡东兵 胡海利 张亚俊 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种油分离器、换热器及空调,其中油分离器包括：内部为分离腔的壳体,壳体可进出气体,且分离腔内设有逐级分离气油混合物的油分离组件。本发明设计的油分离器内部所形成的流场是渐变的、平滑过渡的,在分离过程中的阻力较小降低了系统的性能损失,对能量的保护效果有所加强,实现了油气的平缓分离。(The invention discloses an oil separator, a heat exchanger and an air conditioner, wherein the oil separator comprises: the inside casing that is the separation chamber, but the casing business turn over gas, and the separation intracavity is equipped with the oil separating assembly who separates the gas-oil mixture step by step. The flow field formed in the oil separator designed by the invention is gradually changed and smoothly transited, the resistance in the separation process is small, the performance loss of the system is reduced, the energy protection effect is enhanced, and the smooth separation of oil and gas is realized.)

1. An oil separator comprising: the oil separator is characterized in that an oil separation assembly for separating gas-oil mixture step by step is arranged in the separation cavity.

2. An oil separator as set forth in claim 1 wherein said oil separation assembly includes: the liquid separation plates are vertically distributed in the separation cavity at intervals, and a plurality of through holes are formed in the liquid separation plates.

3. The oil separator of claim 2, wherein the separation chamber is connected to an inlet pipe, an outlet of the inlet pipe is located below the lowermost liquid separation plate, and the housing has a plurality of outlet holes above the uppermost liquid separation plate.

4. The oil separator of claim 1, wherein the volume of the housing bottom gradually increases from bottom to top.

5. An oil separator as set forth in claim 3 wherein said plurality of said liquid-separation plates include: first level divides liquid board, second level to divide liquid board, third level to divide liquid board, the intake pipe runs through first level divides liquid board second level divide liquid board with third level divides liquid board.

6. An oil separator as set forth in claim 5 wherein said through holes in said first stage liquid-separating plate and said second stage liquid-separating plate are staggered in position.

7. An oil separator as set forth in claim 5 wherein the edge of said second stage separator plate is provided with a ring of screen attached to the top of said housing.

8. An oil separator as set forth in claim 1 wherein said housing bottom is provided with an oil return pipe.

9. Heat exchanger, characterized in that it comprises an oil separator according to any one of the preceding claims 1 to 8.

10. An air conditioner characterized by comprising the heat exchanger of claim 9.

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to an oil separator, a heat exchanger and an air conditioner.

Background

In a refrigeration system, a screw compressor can normally operate only by providing lubrication for a moving part and liquid sealing for a sealing part with lubricating oil, and therefore, a certain amount of lubricating oil is usually contained in the exhaust gas of the compressor, and once the lubricating oil enters an evaporator, the lubricating oil not only can seriously affect the heat exchange performance of the evaporator, but also can cause the oil shortage and damage of the compressor. Therefore, an oil separator is required on the discharge side of the compressor to separate the lubricating oil from the gaseous refrigerant.

The types of oil separators commonly used at present include vertical external oil separator, horizontal external oil separator and horizontal internal oil separator. The horizontal built-in oil has larger development space, and plays an important role in simplifying the appearance of the unit, saving the space and the like. In practical application, the reasonable layout of the structural style of the oil separator plays a key role in the separation efficiency of the oil separator. There are many ways of separating oil on the market, including rotary separation type and cylinder screen type. The separation efficiency and pressure loss of these separation forms are difficult to balance, because the separation efficiency is often improved by sacrificing pressure loss, and relying on sudden change of flow velocity, violent impact and the like in order to realize the separation effect in the separation process. Especially, oil separation is directly performed only by one separation process, and a large amount of energy is lost in the separation process, which is a negative factor for the circulation of the whole system.

Disclosure of Invention

The invention provides an oil separator, a heat exchanger and an air conditioner, aiming at solving the technical problem of large energy loss in the oil-gas separation process in the prior art.

The technical scheme adopted by the invention is as follows:

the invention provides an oil separator, a heat exchanger and an air conditioner, wherein the oil separator comprises: the inside casing that is the separation chamber, but the casing business turn over gas, and the separation intracavity is equipped with the oil separating assembly who separates the gas-oil mixture step by step.

Further, the oil separation assembly includes: the liquid separating plates are vertically distributed in the separating cavity at intervals, and a plurality of through holes are formed in the liquid separating plates.

Furthermore, the separation cavity is communicated with an air inlet pipe, an air outlet of the air inlet pipe is positioned below the liquid separation plate at the lowermost layer, and an air outlet hole is formed in the side surface or the top surface of the shell and above the liquid separation plate at the uppermost layer.

In one embodiment, the volume of the bottom of the housing gradually increases from bottom to top.

In one embodiment, the plurality of liquid separation plates includes: the third-stage liquid separation plate, the second-stage liquid separation plate and the first-stage liquid separation plate are arranged on the same plane, and the air inlet pipe is located in the center of all the liquid separation plates and vertically penetrates through all the liquid separation plates.

Furthermore, the positions of the through holes of the first-stage liquid separation plate and the second-stage liquid separation plate are staggered.

Furthermore, a circle of filter screen connected with the top of the shell is arranged at the edge of the second-stage liquid separation plate.

Further, the bottom of the shell is provided with an oil return pipe.

The heat exchanger comprises the oil separator.

The air conditioner comprises the heat exchanger.

Compared with the prior art, the flow field formed in the oil separator designed by the invention is gradually changed and smoothly transited, the resistance in the separation process is small, the performance loss of the system is reduced, the energy protection effect is enhanced, and the smooth separation of oil and gas is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described 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 based on these drawings without inventive exercise.

FIG. 1 is a schematic view of the internal structure of an oil separator according to an embodiment of the present invention;

FIG. 2 is a schematic view of the external structure of an oil separator according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of an oil separator according to an embodiment of the invention;

FIG. 4 is a schematic cross-sectional view from another perspective of an oil separator in accordance with an embodiment of the invention;

1. a housing; 11. a V-shaped bottom plate; 12. an end face seal plate; 13. side surface sealing plates; 14. a top sealing plate; 15. an air outlet; 16. an oil return pipe; 2. an oil separation assembly; 21. a first-stage liquid separation plate; 22. a second-stage liquid separation plate; 23. a third electrode liquid separation plate; 24. filtering with a screen; 3. an air inlet pipe.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.

In a heat exchanger of an air conditioner, the structure and the layout of an oil separator play a key role in the separation efficiency and the energy loss of the oil separator. There are many ways of separating oil on the market, including rotary separation type and cylinder screen type. The separation efficiency and pressure loss of these separation forms are difficult to balance, because the separation efficiency is often improved by sacrificing pressure loss, and relying on sudden change of flow velocity, violent impact and the like in order to realize the separation effect in the separation process. Especially, oil separation is directly performed only by one separation process, and a large amount of energy is lost in the separation process, which is a negative factor for the circulation of the whole system.

In order to solve the above technical problem, the present invention provides a step-by-step separation type oil separator applied in an air conditioner heat exchanger, comprising: the inside is the casing 1 of separation chamber, and the casing 1 can be gone into and is gone out the gas, is equipped with the oil separating assembly 2 that separates the gas-oil mixture step by step in the separation chamber. The flow field formed in the oil separator designed by the invention is gradually changed and smoothly transited, the resistance in the separation process is also the lowest, the performance loss of the system is also the lowest, and the energy protection effect is also the best. In the operation process, the oil separator has the advantages of simple form, small pressure loss, small vibration and the like.

In the embodiment, an oil separator which is simple to produce, easy to install, low in cost and easy to widely use is specifically designed, and is used for achieving high separation efficiency on the premise of low energy loss. As shown in fig. 1 and 2, a straight-tube-shaped intake pipe 3 is communicated with a separation chamber having a cubic upper part and a triangular prism lower part, and an oil separation assembly 2 is provided in the separation chamber. The oil separation assembly specifically comprises: three liquid separating plates in the containing cavity are distributed at intervals from top to bottom, a plurality of through holes for filtering the gas-oil mixture are formed in each liquid separating plate, the gas outlet of the gas inlet pipe 3 is located at the lowermost layer, the lower side of each liquid separating plate is arranged at the uppermost layer, a plurality of gas outlets 15 are formed in the upper side of each liquid separating plate, the gas outlets 15 can be arranged on the side face or the top face of the shell 1, and the liquid separating plate is preferably arranged on the side face of the shell 1. The oil separator provided by the invention can ensure that the gas-oil mixture entering from the air inlet pipe 3 passes through the lowest liquid separating plate and then sequentially passes through other liquid separating plates against the air inlet direction, so that the gas-oil mixture is separated, and oil drops in the gas-oil mixture are separated.

As shown in fig. 2 to 4, the V-shaped bottom plate 11, the end face seal plate 12, the side face seal plate 13 and the top seal plate 14 are constructed to form the housing 1, and a combined separation chamber having a triangular prism lower part and a cubic prism upper part is formed in the housing 1. The V type bottom plate 11 is as the bottom of casing 1, the upper portion of end face shrouding 12 is square, the lower part is the V type, 11 both ends of V type bottom plate and the V type part of 12 lower parts of end face shrouding closely laminate, then the end face shrouding 12 at 11 both ends of V type bottom plate and V type bottom plate has formed the bottom of triangular prism shape, and installed the first order branch liquid board 21 that has the through-hole of the same size on the terminal surface of the open end of this triangular prism shape, it is equipped with second level branch liquid board 22, third level branch liquid board 23 still to be parallel interval in proper order in the top of first order branch liquid board 21. And a circle of side sealing plates 13 is arranged around the second-stage liquid separation plate 22 and the third-stage liquid separation plate 23, the side sealing plates 13 are tightly attached to the V-shaped bottom plate 11 and the end surface sealing plates 12, and the top sealing plates 14 which are covered are arranged at the uppermost parts of the side sealing plates 13. The whole body forms a shell 1 with a separation cavity, the upper part of the separation cavity is a cube, and the lower part of the separation cavity is a triangular prism, and a third-stage liquid separation plate 23, a second-stage liquid separation plate 22 and a first-stage liquid separation plate 21 are sequentially arranged in the separation cavity from top to bottom.

As shown in fig. 1, 3 and 4, a straight tube-shaped air inlet pipe 3 is communicated with the top sealing plate 14 penetrating the casing 1, and the air inlet pipe 3 further penetrates the third-stage liquid separation plate 23, the second-stage liquid separation plate 22 and the first-stage liquid separation plate 21 in sequence, so that an air outlet of the air inlet pipe 3 is below the first-stage liquid separation plate 21, and the position of the air inlet pipe 3 is preferably at the center of the casing 1. Meanwhile, a plurality of rectangular air outlet holes 15 are formed in the side sealing plates 13 of the shell 1, and the air outlet holes 15 are located between the top sealing plate 14 and the third-stage liquid separating plate 23 and used for discharging the dried and separated gas-oil mixture. In addition, oil return holes are respectively arranged at the bottoms of the end face seal plates 12 at the two ends, an oil return pipe 16 is connected to the oil return holes, the outlet direction of the oil return pipe 16 is vertical upward, and oil separated from the gas-oil mixture can be discharged along the oil return pipe 16 under the action of a pressure pump. In order to separate oil droplets sufficiently, the positions of the through holes of the first-stage liquid separation plate 21 and the second-stage liquid separation plate 22 are shifted from each other. In this embodiment, the area of first order minute liquid board 21 near intake pipe 3 does not trompil, is keeping away from the both ends trompil of intake pipe 3, is convenient for increase air current stroke length and the settlement of oil droplet. In order to play the inertial separation effect of deflection and steering and ensure that the gas-oil mixture separated by the first-stage liquid separating plate 21 can fully impact the second-stage liquid separating plate 22, the second-stage liquid separating plate 22 is provided with holes close to the air inlet pipe 3 and staggered with the through holes on the first-stage liquid separating plate 21. The third-stage liquid separation plate 23 is provided with holes in all areas, so that air flow is uniform and the flow field is relieved.

The design can ensure that part of large oil drops in the gas-oil mixture entering the oil separator from the air inlet pipe firstly flow downwards to the bottom under the action of gravity and enter the oil return pipe, then the gas-oil mixture collides with the V-shaped bottom plate to separate part of oil drops, and then the remaining small oil drops upwards separate 70% of oil drops through the first-stage liquid separation plate 21 along with the air flow and continuously enter the second-stage liquid separation plate 22 to remove 10% of oil drops, and then enter the third-stage liquid separation plate 23 to remove 10% of oil drops. In addition for making the separation effect better, the second level divides liquid board and third level to divide being less than first level and divide liquid board at the second level and divide liquid board, then the second level divides liquid board third level to divide and still has the clearance between liquid board and the side shrouding, is equipped with round filter screen 24 between the edge of second level divides liquid board and top shrouding. The gas that every layer of liquid separation board had filtered all can rethread filter screen, receives gravity action and inertial force effect at the continuous flow in-process of interlayer separation, and the gas-oil mixture flows towards oil branch filter screen direction lighter, and the speed can reduce gradually at the flow in-process of tiny particle oil drop, subsides to bottom oil storage area at last.

And in this embodiment, the preferred 60 ~90 of contained angle of V-arrangement shrouding because the angle of this scope more does benefit to liquid flow and air current buffering, more saves space to the holistic structural layout of condenser simultaneously, and the processing degree of difficulty is also than littleer. Meanwhile, the metal filter screen can be preferentially adopted in the form of the filter screen, the metal filter screen is distributed in the surrounding annular area of the structure, the air passage is convenient to install and expand, and meanwhile the effective utilization rate of the internal liquid dividing plate can be improved. Secondly, the filter screen material can be selected from adsorptive materials, such as hard sponge, metal filler, resin material, honeycomb dense PP plastic, multilayer filter paper and the like, but is influenced by the contact medium condition, the compatibility with a refrigerant medium needs to be considered, and then the filter screen material is determined. According to the selected materials, the multi-stage liquid separation plate is matched with the through hole position layout and the flow rate limitation.

The present invention also includes a heat exchanger using the above-proposed oil separator, and also includes an air conditioner using the heat exchanger.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.