CN213066665U

CN213066665U - Gas-liquid separator

Info

Publication number: CN213066665U
Application number: CN202021382274.9U
Authority: CN
Inventors: 松本大史; 小川哲也
Original assignee: Suzhou Chiyoda Seiki Co ltd
Current assignee: Suzhou Chiyoda Seiki Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-04-27
Anticipated expiration: 2030-07-14

Abstract

The utility model discloses a vapour and liquid separator, include: a liquid storage tank; the first pipe body is partially arranged in the liquid storage tank, and one end of the first pipe body is exposed out of the liquid storage tank; the second pipe body is U-shaped, the second pipe body is partially arranged in the liquid storage tank, and one end of the second pipe body is exposed out of the liquid storage tank; the bent part of the second pipe body is provided with a first through hole, the first through hole is formed in the side face of the second pipe body, and a concave face is arranged at the first through hole in the second pipe body; still the cover is equipped with filter equipment on the second body, filter equipment includes the filter screen, the filter screen is the tubulose, the both ends of filter screen are equipped with the clamping ring respectively, the clamping ring with the filter screen cover is established the first through-hole department of second body covers on the concave surface, the clamping ring can closely laminate on the second body. It has good filtering effect and low cost.

Description

Gas-liquid separator

Technical Field

The utility model relates to a refrigeration heats technical field, specifically is a vapour and liquid separator.

Background

The gas-liquid separator is a pressure vessel between the low-pressure side heat exchanger and the compressor in the refrigerant circuit, and functions to separate the refrigerant in a gas-liquid mixed state flowing from the low-pressure side heat exchanger and to send the separated gaseous refrigerant to the compressor. In addition, the gas-liquid separator in the large commercial air conditioner also has the function of recovering the refrigerating machine oil in the refrigerant and returning the refrigerating machine oil to the compressor.

In a typical air conditioning circuit, the devices (low-pressure side heat exchanger, gas-liquid separator, and compressor) are connected by a communication pipe, the interface between the gas-liquid separator and the low-pressure side heat exchanger side communication pipe is a suction port, the interface between the gas-liquid separator and the compressor side communication pipe is a discharge port, the suction port is provided on an inlet pipe, the discharge port is provided on an outlet pipe, the inlet pipe and the outlet pipe are usually made of copper pipe molded products, and these copper pipes penetrate the inside and the outside of the gas-liquid separator.

The outlet pipe is often of a U-shaped configuration in the vessel, with one side of the U-shape connected to the outside of the vessel, i.e. the discharge opening, and the other side opening into the vessel, the side opening into the vessel being referred to as the suction side of the outlet pipe.

Secondly, the bottom of the outlet pipe has a small hole, which is called an oil return hole. There is also a hole at the outlet pipe level with the inlet section, which is called a pressure equalizing hole.

In addition, the outlet pipe is also provided with a fixing plate connected with the two ends of the U-shaped pipe, a dustproof filter screen covering the oil return hole and a saddle-shaped flaring used for mounting the filter screen.

The conventional oil return hole is generally a small hole with the diameter of about 1-2mm formed on the side surface of the pipe, and a dustproof filter screen for covering the hole is arranged above the oil return hole in order to prevent the oil return hole from being blocked by foreign matters, and the dustproof filter screen is usually a formed product of metal meshes. Because the filter screen of the oil return hole is connected with the pipe, a cylindrical saddle-shaped flaring of copper needs to be brazed on the pipe, and a semicircular filter screen is pressed on the saddle-shaped flaring.

The whole outlet pipe of the existing gas-liquid separator is usually formed by a copper pipe. The connection method between the air conditioning parts is usually brazing, which is simple, and the pressure resistance and the corrosion resistance of the copper pipe are better than those of other metals. However, the U-shaped portion of the outlet pipe is located inside the container, and the pressure resistance and corrosion resistance have little influence on the U-shaped portion.

In recent years, the copper price rises, and the cost is higher because the outlet pipe integrally uses a copper pipe. Therefore, aluminum is considered for the material of the outlet pipe inside the container.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides a gas-liquid separator, its filter effect is good, and is with low costs.

In order to achieve the above object, an embodiment of the present application discloses a gas-liquid separator, including:

a liquid storage tank;

the first pipe body is partially arranged in the liquid storage tank, one end of the first pipe body is exposed out of the liquid storage tank, and the end is a suction inlet;

the second pipe body is U-shaped, the second pipe body is partially arranged in the liquid storage tank, one end of the second pipe body is exposed out of the liquid storage tank, and the end is a discharge port; the discharge port is communicated with the compressor, and the other end of the second pipe body is arranged in the liquid storage tank and is a suction side; the bent part of the second pipe body is provided with a first through hole, the first through hole is formed in the side face of the second pipe body, and a concave face is arranged at the first through hole in the second pipe body; the second pipe body is further sleeved with a filtering device, the filtering device comprises a filtering net, the filtering net is tubular, pressing rings are arranged at two ends of the filtering net respectively, the pressing rings and the filtering net are sleeved at the first through hole of the second pipe body and cover the first through hole, the pressing rings can be tightly attached to the second pipe body;

the outlets of the first pipe body and the second pipe body are arranged at the same end of the liquid storage tank.

Preferably, the difference between the radius of the cross section of the second pipe body and the distance from the lowest position of the concave surface to the circle center of the cross section of the second pipe body is greater than or equal to 1 mm.

Preferably, the diameter of the first through hole is 1-2 mm.

Preferably, the second pipe body is made of a copper pipe and an aluminum pipe, the copper pipe is the end of the second pipe body, which is exposed out of the liquid storage tank, the copper pipe is sleeved in the aluminum pipe, a necking is arranged at the end, which is sleeved in the aluminum pipe, of the copper pipe, an extension portion is arranged on the necking, and the copper pipe and the aluminum pipe are fixed together through resistance welding.

Preferably, a fixing plate is arranged on the second pipe body and arranged in the liquid storage tank, one end of the fixing plate is arranged at the position, where the second pipe body is exposed out of one end of the liquid storage tank, and the other end of the fixing plate is arranged at one end, where the second pipe body is arranged in the liquid storage tank.

Preferably, the second pipe body is further provided with a second through hole, the second through hole is close to one end, exposed out of the liquid storage tank, of the second pipe body, and the second through hole is formed in the liquid storage tank.

Preferably, the first pipe body is arranged at one end of the liquid storage tank in a bent manner, and a central shaft of one end of the liquid storage tank, which is arranged on the first pipe body, is perpendicular to a central shaft of one end of the liquid storage tank, which is exposed out of the first pipe body.

The utility model has the advantages as follows:

1. when the aluminum pipe and the copper pipe are welded and connected, molten aluminum slag is arranged on the inner side of the second pipe body, the molten aluminum slag is difficult to remove and has the possibility of residue, and if the molten aluminum slag flows into an air conditioning loop after falling off, the compressor can be damaged or the heat exchange performance can be influenced, so that the necking of the copper pipe is prolonged, the prolonged necking of the copper pipe at the molten part of the copper pipe is blocked, and the aluminum slag is effectively prevented from falling off and flowing out;

2. copper welding is not used, the filter screen is sleeved on the second pipe body through the pressing ring, the operation is simple, and copper welding on an aluminum pipe is avoided;

3. the first pipe body, the second pipe body and the fixing plate are made of aluminum, so that the manufacturing cost is greatly reduced;

5. the tubular filter screen is sleeved on the second pipe body, so that the filter screen is integrally covered on the first through hole, and the concave surface at the periphery of the first through hole enables a gap to exist between the filter screen and the first through hole, thereby ensuring the effective filtering area.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of a gas-liquid separator according to an embodiment of the present invention;

FIG. 2 is an enlarged sectional view of A in FIG. 1;

FIG. 3 is a schematic view of the structure of the filter device;

FIG. 4 is an enlarged view of B of FIG. 1;

reference numerals of the above figures:

1. a liquid storage tank;

2. a first pipe body;

3. a second tube body; 31. a first through hole; 32. a concave surface; 33. a second through hole; 34. a copper pipe; 35. an aluminum tube;

4. filtering with a screen; 41. pressing a ring; 42. a joint;

5. and (7) fixing the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature.

In order to achieve the above object, the present invention provides a gas-liquid separator.

In this embodiment, referring to fig. 1, the gas-liquid separator includes a liquid storage tank 1, and a first pipe 2 and a second pipe 3 disposed on the liquid storage tank 1.

The first pipe body 2 is arranged at the upper part of the liquid storage tank 1, one end of the first pipe body 2 is exposed out of the liquid storage tank 1, and the other end of the first pipe body is arranged in the liquid storage tank 1.

The second pipe body 3 is U-shaped, one end of the second pipe body 3 is exposed out of the upper part of the liquid storage tank 1, and the other end of the second pipe body 3 is arranged in the liquid storage tank 1.

Further, referring to fig. 1, a suction side of the second pipe 3 is disposed at an upper portion of the liquid storage tank 1, a fixing plate 5 is disposed on the second pipe 3, the fixing plate 5 is disposed at an upper portion of the second pipe 3, the fixing plate 5 is disposed in the liquid storage tank 1, one end of the fixing plate 5 is disposed at one end of the second pipe 3 disposed on the liquid storage tank 1, and the other end of the fixing plate 5 is disposed near one end of the second pipe 3 exposed from the liquid storage tank 1.

It can be understood that, in the present embodiment, the fixing plate 5 is welded on the side surface of the second pipe body 3 by TIG welding, so that the depth of fusion of the fixing plate 5 on the second pipe body 3 is 10mm, and the height of the fixing plate 5 is 30 mm; the length of the second pipe body 3 is consistent with the distance between the central shafts at the two ends of the second pipe body 3, and the tolerance is within +/-2 mm. Further, in other practical manners, the penetration depth of the fixing plate 5 may be greater than 10mm, and the height of the fixing plate 5 may be greater than 30 mm. The fixing plate is made of aluminum.

Furthermore, a filtering device is sleeved on the bending part at the bottom of the second pipe body 3.

Further, please refer to fig. 2, a first through hole 31 is formed in a side surface of the bending portion, a concave surface 32 is formed on the periphery of the first through hole 31 in the bending portion, the concave surface 32 is formed by stamping, and a deepest distance of the concave surface 32 is greater than 1mm from a surface of the second pipe body 3 before stamping.

Further, please refer to fig. 3, will filter screen 4 coils into the tubulose, fixes through the electric welding and forms tubulose filter screen 4 after junction 42 is folding, it is fixed that clamping ring 41 is used at the both ends of filter screen 4, filter screen 4 presss from both sides on clamping ring 41, clamping ring 41 with filter screen 4 cover is established on the flexion, filter screen 4 covers on first through-hole 31 and the concave surface 32, junction 42 avoids first through-hole 31 sets up.

It can be understood that the filter screen 4 is fixed on the second pipe body 3 through the pressing ring 41, welding is not needed, operation is simple, and the filtering effect is good.

Referring to fig. 1, the second tube 3 is composed of a copper tube 34 and an aluminum tube 35, the copper tube 34 is an end exposed out of the liquid storage tank 1, a part of the copper tube 34 is exposed out of the liquid storage tank 1, and a part of the copper tube is disposed in the liquid storage tank 1.

It is understood that the connection method between the air conditioning parts is generally brazing, which is relatively simple, and the pressure resistance and corrosion resistance of the copper pipe 34 are superior to those of other metals.

However, the portion of the second tube 3 disposed inside the liquid storage tank 1 is resistant to pressure and corrosion, and can be made of an aluminum tube 35, and the discharge port of the second tube 3 is made of a copper tube 34, which greatly reduces the cost.

It can be understood that, in the present embodiment, when the maximum outer diameter of the copper tube 34 is 6.35 to 19.05mm, the necking is extended by more than 5 mm; when the maximum outer diameter of the copper pipe 34 is 22.1-31.8 mm, the necking is prolonged by more than 7 mm.

Further, referring to fig. 4, the necking and the extension of the copper tube 34 are both disposed in the aluminum tube 35, the aluminum tube 35 with the copper tube 34 inserted therein is placed on a welding machine, after the aluminum tube is placed, the electrode matched with the tube diameter clamps the joint portion, the aluminum tube 35 side is melted after the power is applied, the compression rod is pressed inside the copper tube 34 while the power is applied, and under the condition that the pressure is applied to the inside and outside of the tube, the copper-aluminum alloy is formed on the joint surface of the copper tube 34 and the aluminum tube 35, so that the copper tube and the aluminum tube are joined. When the molten aluminum is solidified and remains inside, the molten aluminum may fall off due to the flow of the refrigerant, which may adversely affect the air conditioner, and the molten aluminum is prevented from being exposed in the pipe, so that the necking of the copper pipe 34 is ensured to have a predetermined length.

Further, referring to fig. 4, a reduced opening is formed at the lower end of the copper pipe 34, the reduced opening copper pipe 34 is made by spinning or punching, and the lower end of the reduced opening is extended to prevent the molten aluminum from being exposed in the second pipe body 3.

Referring to fig. 1, a second through hole 33 is formed at one end of the copper pipe 34 disposed in the liquid storage tank 1, and the second through hole 33 is a pressure equalizing hole.

With the above structure, referring to fig. 1, the refrigerant and the refrigerating machine oil in a gas-liquid mixed state enter the liquid storage tank 1 through the first pipe 2, and the refrigerant and the refrigerating machine oil in a liquid state are accumulated at the bottom of the liquid storage tank 1.

Because the suction side of the second pipe body 3 is arranged above the interior of the liquid storage tank 1, only the refrigerant in a gas state can be sucked by the suction side of the second pipe body 3, the liquid refrigerant at the bottom of the liquid storage tank 1 can be continuously evaporated into the gas refrigerant, and then enters the second pipe body 3 from the suction side of the second pipe body 3.

The outlet of the second tube 3 is the end of the copper tube 34 exposed out of the liquid storage tank 1.

The first through hole 31 of the second tube 3 absorbs the liquid (a small amount of liquid refrigerant mixed with the liquid refrigerating machine oil) remaining at the bottom of the receiver 1, and the liquid refrigerant is supplied into the compressor through the discharge port of the second tube 3.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. A gas-liquid separator, comprising:

a liquid storage tank;

2. The gas-liquid separator of claim 1, wherein the difference between the radius of the cross-section of the second tubular body and the distance from the lowest of the concave surfaces to the center of the cross-section of the second tubular body is greater than or equal to 1 mm.

3. The gas-liquid separator according to claim 1, wherein the first through-hole has a diameter of 1 to 2 mm.

4. The gas-liquid separator according to claim 1, wherein the second pipe is made of a copper pipe and an aluminum pipe, the copper pipe is an end of the second pipe exposed from the liquid storage tank, the copper pipe is sleeved in the aluminum pipe, a throat is formed at an end of the copper pipe sleeved in the aluminum pipe, the throat is provided with an extension, and the copper pipe and the aluminum pipe are fixed together by resistance welding.

5. The gas-liquid separator according to claim 1, wherein a fixing plate is provided on the second tube, the fixing plate being disposed in the liquid storage tank, one end of the fixing plate being disposed at an end of the second tube exposed from the liquid storage tank, and the other end of the fixing plate being disposed at an end of the second tube disposed in the liquid storage tank.

6. The gas-liquid separator of claim 1, wherein the second tube further comprises a second through-hole disposed proximate an end of the second tube exposed from the reservoir, the second through-hole being disposed within the reservoir.

7. The gas-liquid separator of claim 1, wherein the first tube is disposed at an end of the reservoir and is curved, and a central axis of the first tube disposed at the end of the reservoir is perpendicular to a central axis of the first tube exposed at the end of the reservoir.