CN218379880U

CN218379880U - Air conditioning system

Info

Publication number: CN218379880U
Application number: CN202221929039.8U
Authority: CN
Inventors: 赵华; 韩朋飞; 勒孔特·吉约姆
Original assignee: Trane Air Conditioning Systems China Co Ltd
Current assignee: Trane Air Conditioning Systems China Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2023-01-24
Anticipated expiration: 2032-07-26

Abstract

The application provides an air conditioning system, air conditioning system includes compressor, evaporimeter, condenser, oil separator, muffler and oil drain pipe. The compressor includes a suction port and a discharge port communicating with the suction port. The evaporator is connected to the suction port. The condenser is connected to the exhaust port. The oil separator is connected to the exhaust port and the condenser. The muffler is connected between the exhaust port and the oil separator. The oil discharge pipe comprises a first end and a second end which are opposite, the first end is connected to the silencer, the second end is connected to the oil separator, and the oil discharge pipe is used for discharging oil stored in the silencer into the oil separator. The oil discharge pipe is arranged, so that oil stored in the silencer can be discharged to the oil separator, the oil storage of the silencer in the operation process of the air conditioning system is prevented, and the performance of the compressor is improved.

Description

Air conditioning system

Technical Field

The application relates to the technical field of refrigeration equipment, in particular to an air conditioning system.

Background

The oil such as lubricating oil in the compressor in the air conditioning system passes through the silencer along with the refrigerant and enters the oil separator, the oil separator can separate the oil from the gaseous refrigerant, wherein the gaseous refrigerant enters the condenser and becomes liquid, and the oil returns to the compressor again. However, in this process, the muffler blocks a portion of the oil from the compressor, so that the oil is accumulated in the muffler and the performance of the compressor is poor.

SUMMERY OF THE UTILITY MODEL

The application provides an air conditioning system, and compressor performance is better.

The present application provides an air conditioning system, including:

the compressor comprises an air suction port and an air exhaust port communicated with the air suction port;

an evaporator connected to the air suction port;

a condenser connected to the exhaust port;

an oil separator connected to the exhaust port and the condenser;

a muffler connected between the exhaust port and the oil separator; and

an oil discharge pipe including opposite first and second ends, the first end being connected to the muffler and the second end being connected to the oil separator, the oil discharge pipe being for discharging oil accumulated in the muffler into the oil separator.

Optionally, the first end of the oil drain pipe is connected to the bottom of the muffler, and the second end of the oil drain pipe extends to the inside of the oil separator.

Optionally, the muffler is provided with a first air inlet, a first air outlet and a first oil outlet, and the first air inlet is connected to the air outlet;

the oil separator is provided with a second air inlet, a second air outlet, a second oil outlet and an oil inlet, the second air inlet is connected to the first air outlet, the second oil outlet is connected to the compressor, and the second air outlet is connected to the condenser;

the first end of the oil drain pipe is connected to the first oil outlet, and the second end of the oil drain pipe is connected to the oil inlet.

Optionally, the oil separator comprises an oil separator body and an oil baffle plate, wherein the oil baffle plate is arranged inside the oil separator body; the oil separator body is provided with the second air inlet, the second air outlet, the second oil outlet and the oil inlet;

the second air inlet and the oil inlet are arranged on the same side of the oil baffle plate, and the second oil outlet is arranged on the other side of the oil baffle plate.

Optionally, the oil discharge pipe includes a main body portion and a bent portion, and the bent portion is located in the oil separator and is bent from the main body portion to a direction close to the oil baffle.

Optionally, an included angle between the bending portion and the main body portion ranges from 0 ° to 90 °.

Optionally, the main body part is at least partially positioned in the oil separator, the part of the main body part positioned in the oil separator is horizontally arranged, and the distance between the edge of one side of the main body part close to the oil baffle and the oil baffle ranges from 12mm to 50 mm; and/or

The hardness of the material of the bending part is greater than that of the material of the main body part.

Optionally, the second air inlet and the oil inlet are disposed above the oil baffle, and a distance between a lowest position of the second end of the oil discharge pipe and the oil baffle ranges from 1mm to 2 mm.

Optionally, the second air inlet is disposed on a side wall of the oil separator body, the second end of the oil discharge pipe extends from the oil inlet to the inside of the oil separator body through the side wall of the oil separator body, and a port of the second end of the oil discharge pipe is located near a central axis of the oil separator body.

Optionally, the radius of the second air outlet is R, and a distance between a port at the second end of the oil discharge pipe and the central axis of the oil separator body is not greater than 1.12R.

The application provides an air conditioning system, including muffler, oil separator and oil drain pipe, the oil drain pipe includes relative first end and second end, and first end is connected in the muffler, and the second end is connected in the oil separator, and the oil drain pipe is arranged in discharging the oil that accumulates in the muffler to the oil separator. The oil discharge pipe is arranged, so that oil stored in the silencer can be discharged into the oil separator, the oil storage of the silencer in the operation process of the air conditioning system is prevented, and the performance of the compressor is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

FIG. 1 is a partial schematic view of an air conditioning system according to an exemplary embodiment of the present application;

FIG. 2 is a partial perspective view of an air conditioning system according to an exemplary embodiment of the present application;

FIG. 3 is a schematic plan view of an oil separator of an air conditioning system according to an exemplary embodiment of the present application;

FIG. 4 is a static pressure profile of an oil separator of an air conditioning system according to an exemplary embodiment of the present application.

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 application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, 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 application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front," "back," "lower," and/or "upper," and the like are for convenience 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 listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" 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 terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application 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.

The present application provides an air conditioning system. The air conditioning system of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 and 2, the present application provides an air conditioning system 10 including a compressor 11, an evaporator 12, a condenser 13, an oil separator 14, a muffler 15, and an oil discharge pipe 16. The air conditioning system 10 may be a floor air conditioner, a wall air conditioner, or the like, and the present application is not limited thereto. The compressor 11 includes a suction port 17 and a discharge port 18 communicating with the suction port 17, the evaporator 12 is connected to the suction port 17, and the condenser 13 is connected to the discharge port 18. The low-temperature and low-pressure gas refrigerant flows from the evaporator 12 to the compressor 11, is compressed by the compressor 11 into a high-temperature and high-pressure gas refrigerant, is discharged into the condenser 13, and is condensed into a high-temperature and high-pressure liquid refrigerant in the condenser 13. The oil separator 14 is connected to the exhaust port 18 and the condenser 13. Wherein the oil separator 14 may be a cyclonic oil separator. Since the compressor 11 contains oil such as lubricating oil for lubricating elements such as bearings, the oil separator 14 is provided to separate the mixture of oil and gas refrigerant from the inside of the compressor 11. So that the gaseous refrigerant flows to the condenser 13 and the oil flows back to the compressor 11. Alternatively, the oil may be deposited on the bottom of the oil separator 14, and when the oil level of the oil deposited on the bottom of the oil separator 14 reaches a set height, the oil may be returned to the compressor 11. The muffler 15 is connected between the air outlet 18 and the oil separator 14, and the provision of the muffler 15 reduces noise emitted during operation of the air conditioning system 10, and reduces noise emitted during operation of the air conditioning system 10 by reducing noise emitted from the air outlet 18. Alternatively, the muffler 15 may be provided on a pipe line connecting the exhaust port 18 and the oil separator 14. It will be appreciated that the muffler 15 may be connected at one end to the exhaust port 18 and at the other end to the oil separator 14. The oil drain pipe 16 includes opposite first and second ends 19, 20, the first end 19 being connected to the muffler 15 and the second end 20 being connected to the oil separator 14. The connection here may mean that the piping of the oil discharge pipe 16 may communicate with the inside of the muffler 15 and the inside of the oil separator 14. It will be appreciated that the first end 19 is in communication with the muffler 15 and the second end 20 is in communication with the oil separator 14. The oil discharge pipe 16 may be a copper pipe, which is easy to bend and can be adapted to a limited space in the air conditioning system 10. The wall thickness of the oil discharge pipe 16 can be more than or equal to 2.5mm, so that the strength is higher and the deformation is not easy to occur. The oil discharge pipe 16 is used for discharging oil stored in the muffler 15 to the oil separator 14, so that the oil is prevented from being stored in the muffler 15 in the operation process of the air conditioning system 10, the oil can be ensured to circulate between the compressor 11 and the oil separator 14, and the phenomenon that the lubrication of a bearing in the compressor 11 is influenced due to insufficient oil supply caused by the oil stored in the muffler 15 is prevented. The performance of the compressor 11 is improved and thus the performance of the air conditioning system 10 is improved. Meanwhile, the oil discharge pipe 16 has a simple structure, is convenient to manufacture, and is easy to implement.

In some alternative embodiments, the first end 19 of the oil drain pipe 16 is connected to the bottom of the muffler 15. It is understood that the bottom of the silencer 15 may refer to the side of the silencer 15 that is adjacent the floor when the air conditioning system 10 is installed in an external structure. Oil from the compressor 11 is accumulated at the bottom of the muffler 15 due to gravity, and the first end 19 of the oil discharge pipe 16 is connected to the bottom of the muffler 15 to more smoothly discharge the oil. The second end 20 of the oil drain pipe 16 extends into the interior of the oil separator 14. Wherein the second end 20 of the oil drain pipe 16 may be secured to the oil separator 14. Alternatively, the second end 20 of the oil drain pipe 16 may be welded to the sidewall of the oil separator 14 for better retention. Extending the second end 20 of the oil drain tube 16 into the interior of the oil separator 14 provides for better drainage of oil, easier drainage into the oil separator 14, and no oil leakage.

In some alternative embodiments, the muffler 15 is provided with a first air inlet 21, a first air outlet 22 and a first oil outlet 23, the first air inlet 21 being connected to the exhaust port 18. The shapes of the first air inlet 21, the first air outlet 22 and the first oil outlet 23 are not limited, and may be circular or other shapes. The mixture of oil and gas refrigerant discharged from the discharge port 18 of the compressor 11 enters the muffler 15 from the first gas inlet 21, wherein a part of the oil enters the oil separator 14 along with the gas refrigerant, and another part of the oil stays in the muffler 15 and flows out of the muffler through the first oil outlet 23. The oil separator 14 is provided with a second air inlet 24, a second air outlet 25, a second oil outlet 26 and an oil inlet 27. The shapes of the second air inlet 24, the second air outlet 25, the second oil outlet 26 and the oil inlet 27 are not limited in this application, and may be circular. Second air inlet 24 is connected to first air outlet 22, second oil outlet 26 is connected to compressor 11, and second air outlet 25 is connected to condenser 13. The first end 19 of the oil drain pipe 16 is connected to the first oil outlet 23 and the second end 20 of the oil drain pipe 16 is connected to the oil inlet 27. The mixture of oil and gaseous refrigerant discharged from the discharge port 18 of the compressor 11 enters the muffler 15 from the first inlet port 21, wherein some of the oil exits the muffler 15 with the gaseous refrigerant through the first outlet port 22 and enters the oil separator 14 through the second inlet port 24. Other oil that is trapped within the muffler 15 enters the oil discharge pipe 16 through the first oil outlet 23 and enters the oil inlet 27 through the oil discharge pipe 16 to enter the oil separator 14. The oil separator 14 can separate oil and gaseous refrigerant from the compressor 11 and the muffler 15 such that the gaseous refrigerant flows through the second gas outlet 25 to the condenser 13 and the oil flows back to the compressor 11 through the second oil outlet 26. The arrangement can lead some oil retained in the silencer 15 to enter the oil separator 14 through the oil discharge pipe 16 and circulate back to the compressor 11, thereby improving the performance of the compressor 11.

Referring to fig. 1 and 3, in some alternative embodiments, the oil separator 14 includes an oil separator body 28 and an oil deflector 29. The oil separator body 28 may have a cylindrical shape. The oil baffle 29 is provided inside the oil separator main body 28. The oil baffle 29 may separate the oil separator body 18 into two regions, an oil intake region and an oil discharge region. The provision of the oil baffle 29 can block the mixture of oil and gas refrigerant from the oil that has been separated from the gas refrigerant, preventing the oil that has been separated from the gas refrigerant from entering the condenser 13 through the second gas outlet 25. In some alternative embodiments, a gap is provided between the sidewall of the oil deflector 29 and the inner wall of the oil separator body 28 to facilitate the separated oil to flow along the inner wall of the oil deflector 29 to the other side of the oil deflector 29. It will be appreciated that the separated oil flows along the inner wall of the oil deflector 29 to the oil drainage area. The oil separator main body 28 is provided with a second air inlet 24, a second air outlet 25, a second oil outlet 26, and an oil inlet 27. It will be appreciated that the second air inlet 24, second air outlet 25, second oil outlet 26 and oil inlet 27 are provided in the oil separator body 28 for ease of manufacture. The second air inlet 24 and the oil inlet 27 are arranged on the same side of the oil baffle plate 29, and the second oil outlet 26 is arranged on the other side of the oil baffle plate 29, so that the oil from the first oil outlet 23 can be treated and separated by the oil separator 14 together with the mixture from the first air outlet 22 and circulated back to the compressor 11, and the working efficiency is improved. In other embodiments, it is also possible that the oil inlet 27 and the second oil outlet 26 are disposed on the same side of the oil baffle 29, and the second air inlet 24 is disposed on the other side of the oil baffle 29.

In some alternative embodiments, the oil drain tube 16 includes a main body portion 30 and a bend portion 31, the bend portion 31 being located within the oil separator 14. In some alternative embodiments, the material of the bending part 31 has a hardness greater than that of the main body part 30. The material of the bent portion 31 may be steel, and the bent portion 31 may be made of a steel pipe, so as to prevent the bent portion 31 from being deformed due to disturbance of the air flow inside the oil separator 14. The main body part 30 can be made of copper, the main body part 30 can be made of copper pipes, bending and storage are facilitated, and occupied space is smaller. Optionally, the hardness of the material of the conduit of the oil drain pipe 16 located inside the oil separator 14 is greater than the hardness of the material of the conduit located outside the oil separator 14. The bent portion 31 is bent from the main body portion 30 in a direction toward the oil baffle plate 29, and the bent portion 31 is provided to facilitate the discharge of the oil in the drain pipe 16. At the same time, the body portion 30 is bent in a direction toward the oil baffle plate 29 so that the outlet of the oil discharge pipe 16 is directed away from the second air outlet 25 of the oil separator 14, reducing or eliminating the risk of the discharged oil being caught in the second air outlet 25 by the air flow. In some alternative embodiments, the angle between the bending portion 31 and the main body portion 30 ranges from 0 ° to 90 °. Optionally, an included angle between the bending portion 31 and the main body portion 30 may range from 9 ° to 90 °, so that the oil drainage effect is better.

In some alternative embodiments, the body portion 30 is at least partially positioned within the oil separator 14, and the portion of the body portion 30 positioned within the oil separator 14 is horizontally disposed, thereby facilitating the attachment of the drain pipe 16 to the sidewall of the oil separator 14, and facilitating welding when the second end 20 of the drain pipe 16 is welded to the sidewall of the oil separator 14. Meanwhile, the oil inlet 27 is arranged to be the smallest, so that the oil separator 14 is better in sealing performance and is not prone to air leakage. And the distance between the edge of the main body part 30 close to the oil baffle plate 29 and the oil baffle plate 29 is in the range of 12mm to 50 mm. This arrangement leaves room for an extended arrangement of pipes outside the oil separator 14. And when the second end 20 of the oil drain pipe 16 is welded to the sidewall of the oil separator 14, a welded clearance is reserved for ease of machining.

In some alternative embodiments, the second air inlet 24 and the oil inlet 27 are disposed above the oil baffle 29. It will be appreciated that the second air inlet 24 and the oil inlet 27 are disposed above the oil baffle 29 relative to the ground. The distance between the lowest of the second ends 20 of the oil drain pipes 16 and the oil deflector 29 ranges from 1mm to 2 mm. This arrangement facilitates the discharge of the oil in the oil discharge pipe 16 into the oil separator 14, and can reduce or eliminate the risk of the discharged oil being caught in the second air outlet 25 by the air flow.

In some alternative embodiments, the second air inlet 24 is provided in a side wall of the oil separator body 28, and the second end 20 of the oil drain pipe 16 extends from the oil inlet 27 through the side wall of the oil separator body 28 to the interior of the oil separator body 28. The second air inlet 24 and the oil inlet 27 may be disposed on a side wall of the oil separator main body 28, and the second air outlet 25 may be disposed on an end surface of the oil separator main body 28. The port at the second end 20 of the oil drain tube 16 is located near the center axis of the oil separator body 28. The port at the second end 20 of the oil drain tube 16 may be referred to as the port at which oil is drained. The arrangement is such that oil can be smoothly discharged from the oil discharge pipe 16 into the interior of the oil separator 14, because the pressure is low at a position close to the center axis of the oil separator main body 28. Thus, a pressure difference can be formed between the inside of the oil separator 14 and the inside of the muffler 15, so that the oil discharge power is more sufficient, and the oil can be rapidly discharged out of the oil discharge pipe 16. When the oil separator 14 is a cyclonic oil separator, as shown in fig. 4, which is a static pressure profile of the oil separator 14, the denser the rows, the higher the pressure, and it can be seen that the pressure is at a minimum near the central axis of the oil separator body 28. The driving force of the existing design is sufficient to cause the mixture of oil and gas refrigerant to flow out of the muffler 15 to the oil separator 14.

In some alternative embodiments, the second air outlet 25 has a radius R, and the distance between the port at the second end 20 of the oil drain pipe 16 and the central axis of the oil separator body 28 is no greater than 1.12R. It will be appreciated that the distance between the port at the second end 20 of the oil drain pipe 16 and the central axis of the oil separator body 28 is ≦ 1.12R. The specific location of the second end 20 port of the oil drain pipe 16 is defined such that the oil drain port of the oil drain pipe 16 can be located in a low pressure region of the oil separator 14, facilitating rapid draining of oil out of the oil drain pipe 16. Optionally, the air conditioning system 10 includes an outlet pipe 32, and the outlet pipe 32 extends into the oil separator 14 through the second air outlet 25, wherein the radius of the outlet pipe 32 inside the oil separator 14 is R, and the distance between the port of the second end 20 of the oil drain pipe 16 and the central axis of the oil separator main body 28 is not greater than 1.12R.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. An air conditioning system, comprising:

an evaporator connected to the air suction port;

a condenser connected to the exhaust port;

an oil separator connected to the exhaust port and the condenser;

a muffler connected between the exhaust port and the oil separator; and

2. The air conditioning system of claim 1, wherein said first end of said oil drain pipe is connected to a bottom of said muffler and a second end of said oil drain pipe extends into an interior of said oil separator.

3. The air conditioning system as claimed in claim 1 or 2, wherein the muffler is provided with a first air inlet, a first air outlet, and a first oil outlet, the first air inlet being connected to the air outlet;

4. The air conditioning system of claim 3, wherein the oil separator includes an oil separator body and an oil baffle disposed inside the oil separator body; the oil separator body is provided with the second air inlet, the second air outlet, the second oil outlet and the oil inlet;

5. The air conditioning system of claim 4, wherein the oil drain tube includes a main body portion and a bent portion, the bent portion being located within the oil separator and bent from the main body portion in a direction toward the oil baffle.

6. The air conditioning system of claim 5, wherein the angle between the bending portion and the main body portion ranges from 0 ° to 90 °.

7. The air conditioning system of claim 5, wherein the body portion is at least partially disposed within the oil separator, the portion of the body portion disposed within the oil separator is horizontally disposed, and the edge of the body portion on the side close to the oil baffle is at a distance ranging from 12mm to 50mm from the oil baffle; and/or

The bending part is made of a material having a hardness greater than that of the main body part.

8. The air conditioning system of claim 4, wherein the second air inlet and the oil inlet are disposed above the oil baffle, and a distance between a lowest of the second ends of the oil drain pipes and the oil baffle ranges from 1mm to 2 mm.

9. The air conditioning system of claim 4, wherein the second air inlet is disposed in a sidewall of the oil separator body, the second end of the oil drain pipe extends from the oil inlet through the sidewall of the oil separator body to the interior of the oil separator body, and a port of the second end of the oil drain pipe is located near a central axis of the oil separator body.

10. The air conditioning system of claim 9, wherein the second air outlet has a radius R, and wherein a distance between a port at the second end of the oil drain pipe and a central axis of the oil separator body is no greater than 1.12R.