阅读说明：本技术 一种防止压缩机吸气带液的结构及空调系统 (Structure for preventing compressor from absorbing air and carrying liquid and air conditioning system ) 是由 汤佳 姜国璠 周江峰 于 2019-09-18 设计创作，主要内容包括：本发明提供了一种防止压缩机吸气带液的结构及空调系统,涉及空气调节技术领域,解决了压缩机吸气带液的技术问题。防止压缩机吸气带液的结构包括压缩机吸气管以及冷凝器,压缩机吸气管包括吸热段,吸热段放置于冷凝器的壳管内,使进入压缩机前的冷媒能通过吸热段直接吸收冷凝器的放热能量。通过将压缩机吸气管的吸热段直接放置于冷凝器的壳管内,直接吸收冷凝器的放热能量,减少或避免了压缩机吸气带液的情况,保证压缩机可靠稳定运行,而且直接换热的方式提高了传热效率。(The invention provides a structure for preventing air suction and liquid entrainment of a compressor and an air conditioning system, relates to the technical field of air conditioning, and solves the technical problem of air suction and liquid entrainment of the compressor. The structure for preventing the compressor from absorbing air and carrying liquid comprises a compressor air suction pipe and a condenser, wherein the compressor air suction pipe comprises a heat absorption section, and the heat absorption section is placed in a shell pipe of the condenser, so that a refrigerant before entering the compressor can directly absorb the heat release energy of the condenser through the heat absorption section. The heat absorption section of the air suction pipe of the compressor is directly placed in the shell pipe of the condenser, the heat release energy of the condenser is directly absorbed, the condition that the air suction of the compressor is carried with liquid is reduced or avoided, the reliable and stable operation of the compressor is ensured, and the heat transfer efficiency is improved in a direct heat exchange mode.)

1. The structure for preventing the liquid from being carried by the air sucked by the compressor is characterized by comprising a compressor air suction pipe and a condenser, wherein the compressor air suction pipe comprises a heat absorption section, the heat absorption section is placed in a shell pipe of the condenser, and a refrigerant before entering the compressor can directly absorb the heat release energy of the condenser through the heat absorption section.

2. The structure for preventing liquid entrainment in compressor suction pipe according to claim 1, wherein said heat absorbing section is located in the middle of said compressor suction pipe.

3. The structure for preventing the liquid entrainment in the compressor as claimed in claim 1, wherein the length of said heat absorbing section is 40cm to 80 cm.

4. The structure for preventing the liquid entrainment in the compressor as claimed in claim 1, wherein two mounting holes are opened on the condenser, and the heat absorbing section is disposed in the shell tube of the condenser through the mounting holes.

5. The structure for preventing the liquid entrainment in the compressor as set forth in claim 1, wherein said heat absorbing section is hermetically connected to said condenser.

6. The structure for preventing the liquid entrainment in the suction gas of a compressor as claimed in claim 5, wherein said heat absorbing section is welded to said condenser.

7. An air conditioning system comprising a compressor, an evaporator, a throttle valve and the structure for preventing liquid entrainment in suction of the compressor according to any one of claims 1 to 6.

8. The air conditioning system of claim 7, wherein the compressor suction duct is disposed between an outlet of the evaporator and a suction inlet of the compressor.

9. The air conditioning system of claim 7, wherein the mounting aperture of the condenser is sized to coincide with the air outlet of the evaporator.

10. The air conditioning system as claimed in any one of claims 7 to 9, further comprising a bulb disposed adjacent to a suction port of the compressor.

Technical Field

The invention relates to the technical field of air conditioning, in particular to a structure for preventing a compressor from absorbing air and carrying liquid and an air conditioning system.

Background

For a conventional screw water chilling unit, an air suction port of a compressor is connected with an air outlet port of a dry evaporator, and in order to ensure the working environment and the service life of the compressor, the dry evaporator is usually designed by considering that a part of heat exchange pipe allowance is reserved to overheat refrigerant gas, so that the condition that the air suction of the compressor is free of liquid is ensured.

The applicant has found that the prior art has at least the following technical problems:

if the electronic expansion valve or the thermostatic expansion valve is temporarily blocked or the water temperature fluctuates rapidly, the expansion valve has certain hysteresis and cannot be adjusted in time, a small part of refrigerant liquid can be contained when the compressor sucks air, so that a bearing terminal of the compressor is damaged, and the running stability and reliability of a unit are reduced. This must be avoided.

Disclosure of Invention

The invention aims to provide a structure for preventing a compressor from absorbing air and carrying liquid and an air conditioning system, which aim to solve the technical problem of the prior art that the compressor absorbs air and carries liquid. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a structure for preventing a compressor from absorbing air and carrying liquid, which comprises a compressor air suction pipe and a condenser, wherein the compressor air suction pipe comprises a heat absorption section, and the heat absorption section is placed in a shell pipe of the condenser, so that a refrigerant before entering the compressor can directly absorb the heat release energy of the condenser through the heat absorption section.

Optionally, the heat absorbing section is located in the middle section of the compressor suction pipe.

Optionally, the length of the heat absorption section is 40 cm-80 cm.

Optionally, the condenser is provided with two mounting holes, and the heat absorbing section is disposed in a shell pipe of the condenser through the mounting holes.

Optionally, the heat absorbing section is hermetically connected with the condenser.

Optionally, the heat absorbing section is welded to the condenser.

The invention provides an air conditioning system which comprises a compressor, an evaporator, a throttle valve and any one of the structures for preventing the compressor from absorbing air and carrying liquid.

Optionally, the compressor suction pipe is disposed between an air outlet of the evaporator and a suction port of the compressor.

Optionally, the installation hole of the condenser is the same as the air outlet of the evaporator in size.

Optionally, the air conditioning system further includes a thermal bulb disposed near an air suction port of the compressor.

According to the structure for preventing the air suction and the liquid entrainment of the compressor and the air conditioning system, the heat absorption section of the air suction pipe of the compressor is directly placed in the shell pipe of the condenser, so that a refrigerant before entering the compressor can directly absorb the heat release energy of the condenser through the heat absorption section, the condition that the air suction and the liquid entrainment of the compressor are reduced or avoided, the reliable and stable operation of the compressor is ensured, and the heat transfer efficiency is improved in a direct heat exchange mode.

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 the drawings without creative efforts.

Fig. 1 is a schematic diagram of a connection structure of an air conditioning system having a structure for preventing liquid entrainment in suction of a compressor according to an embodiment of the present invention.

FIG. 1, a condenser; 2. a compressor suction duct; 21. a heat absorption section; 3. a compressor; 4. an evaporator; 5. a throttle valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The invention provides a structure for preventing a compressor from absorbing air and carrying liquid, which comprises a compressor air suction pipe 2 and a condenser 1, wherein the compressor air suction pipe 2 comprises a heat absorption section 21, and the heat absorption section 21 is arranged in a shell pipe of the condenser 1, so that a refrigerant before entering the compressor 3 can directly absorb the heat release energy of the condenser 1 through the heat absorption section 21.

The heat absorption section 21 of the compressor air suction pipe 2 is directly placed in the shell pipe of the condenser 1, so that the refrigerant entering the compressor 3 can directly absorb the heat release energy of the condenser 1 through the heat absorption section 21, the condition that the compressor 3 absorbs air and carries liquid is reduced or avoided, the reliable and stable operation of the compressor 3 is ensured, and the heat transfer efficiency is improved in a direct heat exchange mode.

The air suction pipe 2 of the compressor is arranged in the condenser 1, and the refrigerant in the air suction pipe 2 of the compressor is overheated by utilizing the relatively high temperature of the condensation temperature, so that the air suction of the compressor 3 is ensured without liquid.

As an alternative embodiment, the heat absorption section 21 is located in the middle section of the compressor suction duct 2.

The heat absorption section 21 is located in the middle of the compressor suction pipe 2, and is beneficial to mixing, buffering and homogenizing of gas.

In an alternative embodiment, the length of the heat absorbing section 21 is between 40cm and 80 cm.

The length of the heat absorption section 21 is 40 cm-80 cm, so that the liquid is prevented from being carried by air absorption, the assembly is convenient, and the structure is compact and reasonable.

As an alternative embodiment, the condenser 1 is provided with two mounting apertures, and the heat absorbing section 21 is disposed in the shell tube of the condenser 1 through the mounting apertures.

The heat absorption section 21 of the compressor suction pipe 2 is placed in the shell and tube of the condenser 1 through the mounting hole on the condenser 1, and the structure is simple.

As an alternative embodiment, the heat absorption section 21 is hermetically connected to the condenser 1.

As an alternative embodiment, the heat absorption section 21 is welded to the condenser 1.

The heat absorption section 21 is welded with the condenser 1, and the sealing performance is guaranteed.

As shown in fig. 1, the present invention provides an air conditioning system including a compressor 3, an evaporator 4, a throttle valve 5, and any one of the above structures for preventing liquid entrainment in suction of the compressor.

The air conditioning system with the condenser 1 internally provided with the compressor suction pipe 2 has the advantages of fast heat conduction, sensitivity and directness under the condition of setting the same suction superheat degree.

As an alternative embodiment, the compressor suction pipe 2 is arranged between the outlet of the evaporator 4 and the suction of the compressor 3.

As an alternative embodiment, the installation orifice of the condenser 1 is sized to coincide with the air outlet of the evaporator 4.

The air suction pipe 2 of the compressor is connected with the air outlet of the evaporator 4, and the installation orifice of the condenser 1 is the same as the orifice of the air outlet of the evaporator 4 in size, so that the welding and assembly are convenient.

As an optional embodiment, the air conditioning system further comprises a thermal bulb, and the thermal bulb is arranged close to the air suction port of the compressor 3.

The temperature at the air suction port of the compressor 3 is detected by the bulb so as to adjust the opening degree of the throttle valve 5, and the expansion valve is opened to a greater extent when the temperature is higher and is opened to a lesser extent when the temperature is lower.

The design of arranging the air suction pipe 2 of the compressor in the shell pipe of the condenser 1 is characterized in that two inlet and outlet orifices are reserved above the condenser 1, and the size of the installation orifice is the same as that of an air outlet of an evaporator 4. One of the orifices on the condenser 1 is used for being connected with an air outlet of the dry evaporator 4, then an air suction pipe is arranged in the condenser 1, and the pipe is welded at the contact part of the pipe and the shell pipe of the condenser 1 when the pipe is taken out of the condenser 1, so that the sealing property is ensured. And finally to the suction port of the compressor 3 to complete the suction cycle. At the same time, a temperature sensing bulb is fixed at the position close to the air suction port of the compressor 3 to give a temperature signal to the electronic expansion valve to adjust the opening degree.

The condenser 1 has the design advantages of the built-in compressor suction pipe 2: under the same design condition of the refrigeration cycle shell tube, the heat exchange of the heat exchange tube in the dry evaporator 4 is fully utilized, the circulation quantity of the refrigerant is increased, and the relatively high temperature of the condensation temperature is utilized in the condenser 1, so that the gas flow of the refrigerant in the built-in compressor suction pipe 2 is overheated, the performance of the compressor 3 is ensured, the evaporation temperature is increased, and the refrigerating capacity is increased.

The structural design of the air suction pipe 2 of the built-in compressor of the condenser 1 greatly reduces the air suction and liquid carrying conditions of the compressor 3 and improves the energy efficiency of the system.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.